Description:TECHNICAL FIELD
[0001] The present disclosure relates to a vehicle seat backrest. More particularly, the present disclosure relates to a backrest of a vehicle seat, which has the headrest holes and trimming hidden in a simple, efficient, cost-effective, and aesthetically pleasing manner.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Backrest and headrest are essential components of modern vehicle seats, providing comfort and support to the back and head of occupants. Traditional headrest designs typically consist of metal rods that extend from the top of the backrest, which are inserted into slots / holes provided on the backrest structure. These slots / holes on the backrest structure are visible and prone to accumulation of dirt and unwanted materials therewithin, which are generally difficult to clean and may further lead to degradation of the surrounding areas of the holes. Moreover, the holes may make the overall look of the seat aesthetically unpleasing.
[0004] There is, therefore, a need to overcome the above-mentioned drawbacks, limitations, and shortcomings by providing a solution to hide the headrest holes in a simple, efficient, cost-effective, and aesthetically pleasing manner.

OBJECTS OF THE PRESENT DISCLOSURE
[0005] A general object of the present disclosure is to provide a simple, efficient, cost-effective trim element for the backrest of a vehicle seat, which may hide the slot(s) and trimming in an aesthetically pleasing manner and also provide structural support to the seat.

SUMMARY
[0006] The present disclosure relates to a backrest of a vehicle seat, which has the headrest holes and trimming hidden in a simple, efficient, cost-effective, and aesthetically pleasing manner.
[0007] An aspect of the present disclosure pertains to a backrest of a vehicle seat. The backrest comprises a backrest frame and a backrest upholstery fixable to the backrest frame. The backrest upholstery having one or more slot that is adapted to receive a headrest support rod. The backrest upholstery comprises a foam block, and a carrier arranged beneath the foam block to support and stabilize the foam block. Further, the backrest comprises a first trim element connectable to the carrier via a cable and adapted to be installed on the backrest frame such that a first portion of the first trim element extends at least partially over the foam block and a second portion of the first trim element is adapted to be removably engaged with a second trim element to cover at least partially the one or more slot of the backrest upholstery. More particularly, the first trim element arranged at a top end of the backrest frame.
[0008] In an aspect, the backrest upholstery may include a massaging system. The massaging system may be arranged on the carrier. In another aspect, the backrest upholstery may include a ventilation system. The ventilation system may be arranged on the carrier. Thus, a desirable backrest upholstery can be installed as per occupant’s requirements.
[0009] In an aspect, the second portion of the first trim element may comprise an engaging structure that enables the engagement or locking of the second trim element with the second portion.
[0010] In an aspect, each of the first trim element and the second trim element may comprise at least one notch such that upon engagement of the second trim element with the second portion of the first trim element, the corresponding notch of the first trim element and the second trim element form a passage for the headrest support rod.
[0011] In an aspect, the one or more slot may be adapted to receive the headrest support rod by relative movement of the backrest upholstery with respect to the backrest frame in a longitudinal direction of the vehicle seat. Further, the first trim element and/or the second trim element may cover at least partially the one or more slot, with the headrest support rod extending through the formed passage.
[0012] In an aspect, the first trim element may comprise at least one engaging element adapted to releasably engage with the cable.
[0013] In an aspect, the at least one engaging element and the cable may restrict movement of the first trim element with respect to the carrier or the backrest frame.
[0014] In an aspect, the at least one engaging element of the first trim element may be adapted to pivotally or hingedly move with respect to second portion of the first trim element such that the at least one engaging element releasably engages to the cable.
[0015] In an aspect, the at least one engaging element of the first trim element is made by injection molding.
[0016] In an aspect, the at least one engaging element may be adapted to move between an extended position and an engaging position where the at least one engaging element may move beneath the foam block and further engage with and support the cable.
[0017] In an aspect, the cable may extend along lateral sides of the carrier and further engage with the engaging element on lateral sides of the first trim element while extending beneath the foam block.
[0018] In an aspect, the first portion of the first trim element herein may have a first predetermined profile having a curvature based on a profile of an upper front portion of the foam block.
[0019] Another aspect of the present disclosure pertains to a method for mounting the backrest upholstery, The method comprises the steps of providing the backrest frame, providing the backrest upholstery adapted to be fixed onto a front face of the backrest frame, fixing the first trim element to the carrier of the backrest upholstery via the cable, installing the backrest upholstery along with the first trim element on the backrest frame, fixing the second trim element with the first trim element to cover at least partially the one or more slot of the backrest upholstery. As the backrest upholstery along with the first trim part is installed on the backrest frame it avoids finger pinching of a user mounting the backrest upholstery.
[0020] Another aspect of the present disclosure pertains to a method for replacing the backrest upholstery. The method comprises the steps of removing the second trim element from the first trim element, uninstalling the backrest upholstery along with the first trim element from the backrest frame, installing a desirable backrest upholstery along with a first trim element on the backrest frame, and fixing the second trim element with the first trim element of the desirable backrest upholstery to cover at least partially the one or more slot of the backrest upholstery.
[0021] Another aspect of the present disclosure pertains to a method for replacing the backrest upholstery. The method comprises the steps of: removing the second trim element from the first trim element, uninstalling the backrest upholstery along with the first trim element from the backrest frame, removing the first trim element from the carrier of the backrest upholstery, fixing the first trim element with a desirable carrier of a desirable backrest upholstery via the cable, installing a desirable backrest upholstery along with the first trim element on the backrest frame, and fixing the second trim element with the first trim element to cover at least partially the one or more slot of the backrest upholstery.
[0022] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0023] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[0024] In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
[0025] FIGs. 1A to 1C illustrate exemplary representations of a vehicle seat depicting the backrest having slots for the headrest support rods, in accordance with an embodiment of the present disclosure.
[0026] FIGs. 2A to 2C illustrate an exemplary isometric view, top view, and front view respectively of the first trim element, in accordance with an embodiment of the present disclosure.
[0027] FIGs. 3A and 3B illustrate exemplary representations depicting the arrangement of the first trim element on the backrest, in accordance with an embodiment of the present disclosure.
[0028] FIGs. 4A and 4B illustrate exemplary representations depicting the arrangement of the first trim element and the second trim element on the backrest, in accordance with an embodiment of the present disclosure

DETAILED DESCRIPTION
[0029] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0030] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[0031] The present disclosure relates to a backrest of a vehicle seat, which has the headrest holes and trimming hidden in a simple, efficient, cost-effective, and aesthetically pleasing manner.
[0032] The present disclosure elaborates upon a backrest of a vehicle seat. The backrest includes a backrest frame and a backrest upholstery fixable to the backrest frame. The backrest upholstery having one or more slot that is adapted to receive a headrest support rod. The backrest upholstery includes a foam block, and a carrier arranged beneath the foam block to support and stabilize the foam block. Further, the backrest includes a first trim element connectable to the carrier via a cable and adapted to be installed on the backrest frame such that a first portion of the first trim element extends at least partially over the foam block and a second portion of the first trim element is adapted to be removably engaged with a second trim element to cover the one or more slot of the backrest upholstery.
[0033] In an embodiment, the backrest upholstery can include a massaging system. The massaging system can be arranged on the carrier. In another embodiment, the backrest upholstery can include a ventilation system. The ventilation system can be arranged on the carrier. Thus, a desirable backrest upholstery can be installed as per the occupant’s requirement.
[0034] In an embodiment, the second portion of the first trim element can include an engaging structure that enables the engagement or locking of the second trim element with the second portion.
[0035] In an embodiment, each of the first trim element and the second trim element can include at least one notch such that upon engagement of the second trim element with the second portion of the first trim element, the corresponding notch of the first trim element and the second trim element form a passage for the headrest support rod.
[0036] In an embodiment, the one or more slot can be adapted to receive the headrest support rod by relative movement of the backrest upholstery with respect to the backrest frame in a longitudinal direction of the vehicle seat. Further, the first trim element and the second trim element can cover at least partially the one or more slot, with the headrest support rod extending through the formed passage.
[0037] In an embodiment, the first trim element can include at least one engaging element adapted to releasably engage with the cable.
[0038] In an embodiment, the at least one engaging element and the cable can restrict movement of the first trim element with respect to the carrier or the backrest frame.
[0039] In an embodiment, the at least engaging element of the first trim element can be adapted to pivotally or hingedly move with respect to second portion of the first trim element such that the at least one engaging element releasably engages to the cable.
[0040] In an embodiment, the at least one engaging element of the first trim element can be made by injection molding.
[0041] In an embodiment, the at least one engaging element may be adapted to move between an extended position and an engaging position where the at least one engaging element may move beneath the foam block and further engage with and support the cable.
[0042] In an embodiment, the cable can extend along lateral sides of the carrier and further engage with the engaging element on lateral sides of the first trim element while extending beneath the foam block.
[0043] In an embodiment, the first portion of the first trim element herein can have a first predetermined profile having a curvature based on a profile of an upper front portion of the foam block.
[0044] Another aspect of the present disclosure pertains to a method for mounting the backrest upholstery, The method can include the steps of providing the backrest frame, fixing the backrest upholstery onto a front face of the backrest frame, fixing the first trim element to the carrier of the backrest upholstery via the cable, installing the backrest upholstery along with the first trim element on the backrest frame, fixing the second trim element with the first trim element to cover at least partially the one or more slot of the backrest upholstery.
[0045] Another aspect of the present disclosure pertains to a method for replacing the backrest upholstery. The method can include the steps of removing the second trim element from the first trim element, uninstalling the backrest upholstery along with the first trim element from the backrest frame, installing a desirable backrest upholstery along with a first trim element on the backrest frame, and fixing the second trim element with the first trim element of the desirable backrest upholstery to cover at least partially the one or more slot of the backrest upholstery.
[0046] Another aspect of the present disclosure pertains to a method for replacing the backrest upholstery. The method can include the steps of removing the second trim element from the first trim element, uninstalling the backrest upholstery along with the first trim element from the backrest frame, removing the first trim element from the carrier of the backrest upholstery, fixing the first trim element with a desirable carrier of a desirable backrest upholstery via the cable, installing a desirable backrest upholstery along with the first trim element on the backrest frame, and fixing the second trim element with the first trim element to cover at least partially the one or more slot of the backrest upholstery.
[0047] Referring to FIGs. 1A to 4B, the vehicle seat 100 can include a seating base 102 having a seating base frame 102-1, on which a backrest 104 with a backrest frame 104-1 can be mounted as shown in FIG. 1A. The backrest 104 can be pivotably coupled to the seating base frame 102. In addition, an articulation mechanism 106 can be arranged between the seating base frame 102-1 and the backrest frame 104-1 to facilitate articulation of the backrest 104 with respect to the seating base 102. The backrest 104 can further include a backrest upholstery 108 comprising a foam block 108-1, and a carrier 108-2 (shown in FIG. 3B) to support and provide stability to the foam block 108-1. Further, the seating base 102 can also include seating upholstery 110. The seat 100 can further include a headrest 112 having a headrest frame in the form of support rods 112-A, 112-B fixed to the backrest frame 104-1. The backrest frame 104-1 and/or the foam block 108-1 (backrest upholstery) can include one or more slot(s) or slit(s) 114-1, 114-2 (collectively designated as 114, herein) that can be adapted to receive the headrest support rod 112-A, 112-B by relative movement of the backrest upholstery 108 with respect to the backrest frame 104-1 in a longitudinal direction (X) of the vehicle seat 100.
[0048] In an embodiment (not shown), the backrest frame 104-1 can include a lower column and an upper column connected by cross members to form the backrest frame. The columns and cross members of the backrest frame 104-1 can be welded together. Alternatively, the backrest frame 104-1 may be manufactured or molded in one piece. Further, as illustrated in FIG. 3B, the carrier 108-2 can be arranged in front of the backrest frame 104-1 and the foam block 108-1 of backrest upholstery 108 can be further arranged on the carrier 108-2, such that the carrier 108-2 may support and provide stability to the foam block 108-1.
[0049] Further, in an embodiment, as illustrated in FIG. 1C, the backrest upholstery 108 of the backrest 104 can include a support section 108-3, herein shaped as a plate. The support section 108-3 in particular can be more rigid than the foam block 108-1. In particular, the foam block 108-1 can be over-molded on the support section 108-3. Alternatively, the foam block 108-1 can be glued or elastically interlocked on the support section 108-3. The support section 108-3 extends substantially in a longitudinal direction. The longitudinal ends of the support section 108-3 can be curved to facilitate the arrangement of the backrest upholstery 108 on the backrest frame 104-1. Thus, the upper end U of the support section 108-3 can rest on the upper columns of the backrest frame 104-1. Similarly, the lower end (not shown) of the support section 108-3 can accommodate the lower columns of the backrest frame 104-1. Further, the slot(s) 114 can be made at the upper curved end U of the support section 108-3. The slots 114 at the upper curved end U and accommodating the headrest support rods 112-A, 112-B allow guiding the movement of the backrest upholstery 108 with respect to the backrest frame 104-1.
[0050] Referring to FIGs. 3A to 4B, the backrest 104 or the seat 100 can further include a first trim element 200 adapted to be arranged at the top end of the backrest frame 104-1 and further connected to the carrier 108-2 of the backrest upholstery 108 by one or more cables 302 (collectively designated as a cable, herein) such that a first portion (towards a seat occupant) 202 of the first trim element 200 extends at least partially over the foam block 108-1 and a second portion 204 (towards the rear of the seat) of the first trim element 200 is adapted to be removably engaged with a second trim element 400 (also referred to as filling element) to cover at least partially the slot 114 of the backrest upholstery 108.
[0051] In an embodiment, the second portion 204 of the first trim element 200 can include a first engaging structure (not shown) and the second trim panel 400 can include a second engaging structure (not shown) concurrent to the first engaging structure, which enables the engagement or locking of the second trim element 400 with the second portion 204 of the first trim panel 200. Further, the first portion 202 (towards the seat occupant) of the first trim element 200 herein can have a first predetermined profile having a curvature based on the profile of the upper front portion of the foam block 108-1, which allows the first portion 202 to cover the foam block 108-1 of the backrest upholstery 108, in particular on the upper front face of the backrest 104. Similarly, the second trim element 400 can have a second predetermined profile having a curvature based on the profile of the second (rear) portion 204 of the first trim panel 200 and/or the upper rear face of the foam block 108-1, which allows the second trim panel 400 to cover the second portion 204 of the first trim panel or a portion of the foam block 108-1 of the backrest upholstery 108, in particular on the rear face of the backrest 104.
[0052] In an embodiment, each of the first trim element 200 and the second trim element 400 can include at least one notch such that upon engagement of the second trim element 400 with the second portion 204 of the first trim element 200, the corresponding notch of the first trim element 200 and the second trim element 400 can form a passage ‘P’ for the headrest support rod 112-A, 112-B as shown in FIG. 4B. The slot 114 of the backrest upholstery 108 can receive the headrest support rod 112-A, 112-B by relative movement of the backrest upholstery 108 with respect to the backrest frame 104-1 in a longitudinal direction X of the vehicle seat 100 as shown in FIG. 1B. Further, the first trim element 200 and the second trim element 400 can cover at least partially the slot 114, with the headrest support rod 112-A, 112-B extending through the formed passage (P) as shown in FIG. 4B.
[0053] In an embodiment, the diameter of the notch associated with the first trim element 200 may be half the diameter of the headrest support rod 112-A, 112-B and the diameter of the notch associated with the second trim element 400 may be half the diameter of the headrest support rod 112-A, 112-B, such that once the first trim element 200 and the second trim element 400 are engaged, a passage (P) having a diameter substantially equal (but not less) to the diameter of the headrest support rod 112-A, 112-B can be formed. This may restrict the formation of any gap between the headrest support rod 112-A, 112-B and the trim panels 200, 400 once the trim panels are installed on the backrest 104, thereby hiding the headrest slot 114, restricting the effect of the outside environment and accumulation of dust within the slot 114, while providing a clean and aesthetic appearance.
[0054] In an aspect, the backrest upholstery 108 can include a massaging system. The massaging system can be arranged on the carrier 108-2. In another aspect, the backrest upholstery 108 may include a ventilation system. The ventilation system may be arranged on the carrier 108-2. Thus, the occupant can install a desirable backrest upholstery in the seat.
[0055] Referring back to FIG. 2A to 3B, in an embodiment, the first trim element 200 can include an engaging element 206 on the lateral sides of the main frame/body 208 of the first trim panel 200, which can be adapted to engage with the cable(s) 302 connected to the carrier 108-2 of the backrest upholstery 108. In an exemplary embodiment, the engaging element 206 can be in the form of a wing-shaped member that can be injection molded along with the main body 208 of the first trim element 200. The engaging element 206 can be adapted to be pivotally or hingedly moved with respect to the main body 208. The wing-shaped engaging elements 206 at the lateral sides of the first trim element 200 can move between an extended position and an engaging position. In the extended position, as shown in FIG. 2A, the engaging elements 206 extend outwards or substantially parallel to the main body 208 of the first trim panel 200, which may allow easier and unobstructed arrangement of the foam block 108-1 and the first trim panel 200 on the backrest frame 104-1. Further, in the engaging position, as shown in FIGs 3A and 3B, the engaging element 206 moves beneath the foam block 108-1 and further engages with and supports the cables 302 being connected to or extending along the lateral sides of the carrier 108-2. The cable 302 and the engaging elements 206 can facilitate keeping the first trim panel 200 integrally and securely connected to the backrest 104 and further restrict movement of the first trim element 200 with respect to the carrier or the backrest frame 104-1.
[0056] In an aspect, a method for mounting the backrest upholstery is disclosed. The method can include the steps of providing the backrest frame 104-1, and providing the backrest upholstery 108 adapted to be arranged onto a front face of the backrest frame 104-1. Further, the method can include the steps of fixing the first trim element 200 to the carrier 108-2 of the backrest upholstery 108 via the cable 302 and installing the backrest upholstery 108 along with the first trim element 200 on the backrest frame 104-1. Furthermore, the method can include the steps of fixing the second trim element 402 with the first trim element 200 to cover at least partially the one or more slot 114 of the backrest upholstery 108.In an aspect, a method for replacing the backrest upholstery is disclosed. The method can include the steps of removing the second trim element 402 from the first trim element 200, followed by uninstalling the backrest upholstery 108 along with the first trim element 200 from the backrest frame 104-1and installing a desirable backrest upholstery 108 along with a first trim element 200 on the backrest frame 104-1. Further, the method can include the steps of fixing the second trim element 402 with the first trim element 200 of the desirable backrest upholstery 108 to cover at least partially the one or more slot 114 of the backrest upholstery.
[0057] In an aspect, a method for replacing the backrest upholstery is disclosed. The method can include the steps of removing the second trim element 402 from the first trim element 200, followed by uninstalling the backrest upholstery 108 along with the first trim element 200 from the backrest frame 104-1 and removing the first trim element 200 from the carrier 108-2 of the backrest upholstery 108. Further, the method can include the steps of fixing the first trim element 200 with a desirable carrier 108-2 of a desirable backrest upholstery 108 via the cable 302, followed by installing a desirable backrest upholstery 108 along with the first trim element 200 on the backrest frame 104-1 and fixing the second trim element 402 with the first trim element 200 to cover at least partially the one or more slot 114 of the backrest upholstery.
[0058] Thus, the present invention overcomes the limitations, shortcomings, and drawbacks associated with the existing vehicle seat and backrest by providing a backrest of vehicle seat, which has headrest holes and trimming hidden in a simple, efficient, cost-effective, and aesthetically pleasing manner, and which can be easily and quickly assembled.
[0059] Moreover, in interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[0060] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions, or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[0061] The proposed invention effectively hides the headrest holes on the backrest structure of vehicle seats, ensuring a clean and seamless appearance, while also providing structural support.
[0062] The proposed invention improves the overall look of the seat by eliminating the visible headrest holes, creating a visually pleasing and aesthetically appealing design.
[0063] The proposed invention provides a backrest of a vehicle seat, which has headrest holes and trimming hidden in a simple, efficient, cost-effective, and aesthetically pleasing manner.
[0064] The proposed invention provides a simple, efficient, cost-effective trim element for the backrest of a vehicle seat, which hides the holes and trimming in an aesthetically pleasing manner and also provides structural support to the seat.
[0065] The proposed invention provides a backrest of a vehicle seat, which is easy to assemble also avoid finger pinching as the backrest upholstery along with the first trim part is installed on the backrest frame and can be easy to dis-assembled quickly.
, Claims:1. A backrest (104) of a vehicle seat (100), the backrest (104) comprising:
a backrest frame (104-1);
a backrest upholstery (108) fixable to the backrest frame (104-1), the backrest upholstery (108) having one or more slot (114) that is adapted to receive a headrest support rod (112); wherein the backrest upholstery (108) comprises a foam block (108-1), and a carrier (108-2) arranged beneath the foam block (108-1) to support and/or stabilize the foam block (108-1); and
a first trim element (200) connectable to the carrier (108-2) via a cable (302) and adapted to be installed on the backrest frame (104-1) such that a first portion (202) of the first trim element (200) extends at least partially over the foam block (108-1) and a second portion (204) of the first trim element (200) is adapted to be removably engaged with a second trim element (402) to cover at least partially the one or more slot (114) of the backrest upholstery (108).

2. The backrest (104) as claimed in claim 1, wherein the second portion (204) of the first trim element (200) comprises a first engaging structure and the second trim element (402) comprises a second engaging structure concurrent to the first engaging structure, which enables the engagement or locking of the second trim element (402) with the second portion (204) of the first trim panel (200).

3. The backrest (104) as claimed in claim 1, wherein each of the first trim element (200) and the second trim element (402) comprise at least one notch such that upon engagement of the second trim element (402) with the second portion (204) of the first trim element (200), the corresponding notch of the first trim element (200) and the second trim element (402) form a passage (P) for the headrest support rod (112).

4. The backrest (104) as claimed in claim 3, wherein the one or more slot (114) is adapted to receive the headrest support rod (112) by relative movement of the backrest upholstery (108) with respect to the backrest frame (104-1) in a longitudinal direction of the vehicle seat (100), and wherein the first trim element (200) and/or the second trim element (402) cover at least partially the one or more slot (114), with the headrest support rod (112) extending through the formed passage (P).

5. The backrest (104) as claimed in claim 1, wherein the first trim element (200) comprises at least one engaging element (206) adapted to releasably engage with the cable (302).

6. The backrest (104) as claimed in claim 5, wherein the at least one engaging element (206) and the cable (302) restrict movement of the first trim element (200) with respect to the carrier (108-2) or the backrest frame (104-1).

7. The backrest (104) as claimed in claim 5, wherein the at least one engaging element (206) of the first trim element (200) is adapted to pivotally or hingedly move with respect to the second portion (204) of the first trim element (200) such that the at least one engaging element (206) releasably engage to the cable (302).

8. The backrest (104) as claimed in claim 5, wherein the first trim element (200) is made by injection molding.

9. The backrest (104) as claimed in claim 5, wherein the at least one engaging element (206) adapted to move between an extended position and an engaging position where the at least one engaging element (206) moves beneath the foam block (108-1) and further engages with and supports the cable (302).

10. The backrest (104) as claimed in claim 5, wherein the cable (302) extends along lateral sides of the carrier (108-2) and further engages with the engaging element (206) on lateral sides of the first trim element (200) while extending beneath the foam block (108-1).

11. The backrest (104) as claimed in claim 1, wherein the first portion (202) of the first trim element (200) herein has a first predetermined profile having a curvature based on a profile of an upper front portion of the foam block (108-1).

12. A method for mounting the backrest upholstery (108) according to claim 1, comprising the steps of:
• providing the backrest frame (104-1);
• providing the backrest upholstery (108) adapted to be fixed onto a front face of the backrest frame (104-1);
• fixing the first trim element (200) to the carrier (108-2) of the backrest upholstery (108) via the cable (302);
• installing the backrest upholstery (108) along with the first trim element (200) on the backrest frame (104-1); and
• fixing the second trim element (402) with the first trim element (200) to cover at least partially the one or more slot (114) of the backrest upholstery (108).

13. A method for replacing the backrest upholstery (108) according to claim 1, comprising the steps of:
• removing the second trim element (402) from the first trim element (200);
• uninstalling the backrest upholstery (108) along with the first trim element (200) from the backrest frame (104-1);
• installing a desirable backrest upholstery (108) along with a first trim element (200) on the backrest frame (104-1); and
• fixing the second trim element (402) with the first trim element (200) of the desirable backrest upholstery (108) to cover at least partially the one or more slot (114) of the backrest upholstery (108).

14. A method for replacing the backrest upholstery (108) according to claim 1, comprising the steps of:
• removing the second trim element (402) from the first trim element (200);
• uninstalling the backrest upholstery (108) along with the first trim element (200) from the backrest frame (104-1);
• removing the first trim element (200) from the carrier (108-2) of the backrest upholstery (108);
• fixing the first trim element (200) with a desirable carrier (108-2) of a desirable backrest upholstery (108) via the cable (302);
• installing a desirable backrest upholstery (108) along with the first trim element (200) on the backrest frame (104-1); and
• fixing the second trim element (402) with the first trim element (200) to cover at least partially the one or more slot (114) of the backrest upholstery (108).