Description:TECHNICAL FIELD
[0001] The present disclosure relates to a mounting assembly for a vehicle. In particular, the present disclosure provides an assembly for mounting a rear-view mirror on a saddle-type vehicle.

BACKGROUND
[0002] Current vehicles use a direct mounting of a rear-view mirror (102) onto a brake master cylinder (104) or on a clutch lever of the vehicle, as shown in FIG. 1B. FIG. 1B illustrates a complete assembly of the rear-view mirror (102) mounted with the brake master cylinder. Manufacturing of an integrated part of the brake master cylinder along with the rear-view mirror (102) is highly expensive. Further, if there is any damage on the brake master cylinder due to fall, the complete assembly of the rear-view mirror (102) has to be replaced which is also highly expensive.
[0003] Conventionally, a mechanism for mounting a side rear-view mirror to a master cylinder for a motor bicycle is provided. A rear-view mirror-mounting portion is formed on a handle-mounting member by which a body of the master cylinder is fixed to a handle bar. Such a mirror-mounting portion may be defined by a boss portion in integral relation to the handle-mounting member. The boss portion may be made of any structure capable of retaining a side mirror-mounting shaft.
[0004] However, the conventional mechanisms/replacement portions used for mounting the mirror to the master cylinder is costlier and may not satisfy a few pre-defined structural requirements.
[0005] There is, therefore, a need for an improved assembly for mounting the rear-view mirror on the vehicle in a cost-effective manner by overcoming the deficiencies in the prior art(s).

OBJECTS OF THE PRESENT DISCLOSURE
[0006] A general object of the present disclosure is to provide an assembly for mounting a rear-view mirror on a saddle-type vehicle in a cost-effective manner.
[0007] An object of the present disclosure is to provide an assembly that satisfies structural requirements for mounting a rear-view mirror on a saddle-type vehicle by considering layout constraints and manufacturing constraints.
[0008] An object of the present disclosure is to provide an assembly for mounting a rear-view mirror on a saddle-type vehicle as a separate part, which reduces an overall mounting cost.
[0009] Another object of the present disclosure is to provide an assembly that includes a predefined angular weld to avoid interference with a master cylinder.

SUMMARY
[0010] Aspects of the present disclosure relate to a mounting assembly for a vehicle. In particular, the present disclosure provides an assembly for mounting a rear-view mirror on a saddle-type vehicle.
[0011] In an aspect, the present disclosure describes an assembly for mounting a rear-view mirror on a saddle type vehicle. The assembly includes a top bracket and a bottom bracket each including at least one section of a tube profile. The top bracket and bottom bracket are collectively mounted on a handlebar of a saddle type vehicle. A bush of a pre-defined height is mounted on the top bracket for allowing a fitment of the rear-view mirror on the handlebar.
[0012] In some embodiments, the top bracket and the bottom bracket may be either entirely superimposed or may include a pre-defined degree of offset for facilitating the mounting of the rear-view mirror in at least one direction.
[0013] In some embodiments, the top bracket may include at least one female part positioned underneath the bush for receiving a male part provided on one end of the rear-view mirror.
[0014] In some embodiments, the bottom bracket may include a pre-defined section of a female part for facilitating a plurality of variations in positioning of the top bracket over the bottom bracket.
[0015] In some embodiments, each of the top bracket and the bottom bracket may include a rib section for providing structural stiffness to each of the top bracket and the bottom bracket to resist vibrations of the rear-view mirror in Z direction.
[0016] In some embodiments, the bottom bracket may include at least one flange for providing structural stiffness to the bottom bracket to resist vibrations of the rear-view mirror in X direction and Z direction.
[0017] In some embodiments, the bush may include one or more internal threads to enable a fitment of the rear-view mirror to the top bracket.
[0018] In some embodiments, the top bracket, the bush, and the bottom bracket may be individual parts which may be configured in a pre-defined orientation for enabling the mounting of the rear-view mirror.
[0019] In some embodiments, the top bracket, the bush, and the bottom bracket may be a singular integrated unit for enabling the mounting of the rear-view mirror.
[0020] In some embodiments, the bush may be welded onto the top bracket via a predefined weld to avoid interference with a master cylinder, wherein the predefined weld is configured in a ratio of 3:1.
[0021] 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 THE DRAWINGS
[0022] 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.
[0023] FIG. 1A illustrates an example schematic view of an electric saddle type vehicle.
[0024] FIG. 1B illustrates a perspective view of the conventional configuration of a rear-view mirror mounted on a master cylinder of a saddle type vehicle, according to the prior arts.
[0025] FIG. 2 illustrates an exemplary perspective view of a rear-view mirror mounted on a handlebar of a saddle type vehicle, according to embodiments of the present disclosure.
[0026] FIG. 3A illustrates an exemplary isometric view of an assembly for mounting a rear-view mirror on a saddle type vehicle, according to embodiments of the present disclosure.
[0027] FIG. 3B illustrates a side view of an assembly for mounting a rear-view mirror on a saddle type vehicle, according to embodiments of the present disclosure.
[0028] FIGs. 4A and 4B illustrate schematic views depicting different welds used in an assembly for mounting a rear-view mirror on a saddle type vehicle, according to embodiments of the present disclosure.

DETAILED DESCRIPTION
[0029] For the purpose of promoting an understanding of the principles of the present disclosure, reference will now be made to the various embodiments and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the present disclosure is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the present disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the present disclosure relates.
[0030] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the present disclosure and are not intended to be restrictive thereof.
[0031] Whether or not a certain feature or element was limited to being used only once, it may still be referred to as “one or more features” or “one or more elements” or “at least one feature” or “at least one element.” Furthermore, the use of the terms “one or more” or “at least one” feature or element do not preclude there being none of that feature or element, unless otherwise specified by limiting language including, but not limited to, “there needs to be one or more…” or “one or more elements is required.
[0032] Reference is made herein to some “embodiments.” It should be understood that an embodiment is an example of a possible implementation of any features and/or elements of the present disclosure. Some embodiments have been described for the purpose of explaining one or more of the potential ways in which the specific features and/or elements of the proposed disclosure fulfil the requirements of uniqueness, utility, and non-obviousness.
[0033] Use of the phrases and/or terms including, but not limited to, “a first embodiment,” “a further embodiment,” “an alternate embodiment,” “one embodiment,” “an embodiment,” “multiple embodiments,” “some embodiments,” “other embodiments,” “further embodiment”, “furthermore embodiment”, “additional embodiment” or other variants thereof do not necessarily refer to the same embodiments. Unless otherwise specified, one or more particular features and/or elements described in connection with one or more embodiments may be found in one embodiment, or may be found in more than one embodiment, or may be found in all embodiments, or may be found in no embodiments. Although one or more features and/or elements may be described herein in the context of only a single embodiment, or in the context of more than one embodiment, or in the context of all embodiments, the features and/or elements may instead be provided separately or in any appropriate combination or not at all. Conversely, any features and/or elements described in the context of separate embodiments may alternatively be realized as existing together in the context of a single embodiment.
[0034] Any particular and all details set forth herein are used in the context of some embodiments and therefore should not necessarily be taken as limiting factors to the proposed disclosure. The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by “comprises... a” does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
[0035] Embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings.
[0036] For the sake of clarity, the first digit of a reference numeral of each component of the present disclosure is indicative of the Figure number, in which the corresponding component is shown. For example, reference numerals starting with digit “1” are shown at least in Figure 1. Similarly, reference numerals starting with digit “2” are shown at least in Figure 2.
[0037] An Electric Vehicle (EV) or a battery powered vehicle including, and not limited to two-wheelers such as scooters, mopeds, motorbikes/motorcycles; three-wheelers such as auto-rickshaws, four-wheelers such as cars and other Light Commercial Vehicles (LCVs) and Heavy Commercial Vehicles (HCVs) primarily work on the principle of driving an electric motor using the power from the batteries provided in the EV. Furthermore, the electric vehicle may have at least one wheel which is electrically powered to traverse such a vehicle. The term ‘wheel’ may be referred to any ground-engaging member which allows traversal of the electric vehicle over a path. The types of EVs include Battery Electric Vehicle (BEV), Hybrid Electric Vehicle (HEV) and Range Extended Electric Vehicle. However, the subsequent paragraphs pertain to the different elements of a Battery Electric Vehicle (BEV).
[0038] In construction, as shown in FIG. 1A, an EV (10) typically comprises a battery or battery pack (12) enclosed within a battery casing and includes a Battery Management System (BMS), an on-board charger (14), a Motor Controller Unit (MCU), an electric motor (16), and an electric transmission system (18). The primary function of the above-mentioned elements is detailed in the subsequent paragraphs: The battery of an EV (10) (also known as Electric Vehicle Battery (EVB) or traction battery) is re-chargeable in nature and is the primary source of energy required for the operation of the EV, wherein the battery (12) is typically charged using the electric current taken from the grid through a charging infrastructure (20). The battery may be charged using Alternating Current (AC) or Direct Current (DC), wherein in case of AC input, the on-board charger (14) converts the AC signal to DC signal after which the DC signal is transmitted to the battery via the BMS. However, in case of DC charging, the on-board charger (14) is bypassed, and the current is transmitted directly to the battery via the BMS.
[0039] The battery (12) is made up of a plurality of cells which are grouped into a plurality of modules in a manner in which the temperature difference between the cells does not exceed 5 degrees Celsius. The terms “battery”, “cell”, and “battery cell” may be used interchangeably and may refer to any of a variety of different rechargeable cell compositions and configurations including, but not limited to, lithium-ion (e.g., lithium iron phosphate, lithium cobalt oxide, other lithium metal oxides, etc.), lithium-ion polymer, nickel metal hydride, nickel cadmium, nickel hydrogen, nickel-zinc, silver zinc, or other battery type/configuration. The term “battery pack” as used herein may be referred to multiple individual batteries enclosed within a single structure or multi-piece structure. The individual batteries may be electrically interconnected to achieve a desired voltage and capacity for a desired application. The Battery Management System (BMS) is an electronic system whose primary function is to ensure that the battery (12) is operating safely and efficiently. The BMS continuously monitors different parameters of the battery such as temperature, voltage, current and so on, and communicates these parameters to the Electronic Control Unit (ECU) and the Motor Controller Unit (MCU) in the EV using a plurality of protocols including and not limited to Controller Area Network (CAN) bus protocol which facilitates the communication between the ECU/MCU and other peripheral elements of the EV (10) without the requirement of a host computer.
[0040] The MCU primarily controls/regulates the operation of the electric motor based on the signal transmitted from the vehicle battery, wherein the primary functions of the MCU include starting of the electric motor (16), stopping the electric motor (16), controlling the speed of the electric motor (16), enabling the vehicle to move in the reverse direction and protect the electric motor (16) from premature wear and tear. The primary function of the electric motor (16) is to convert electrical energy into mechanical energy, wherein the converted mechanical energy is subsequently transferred to the transmission system of the EV to facilitate movement of the EV. Additionally, the electric motor (16) also acts as a generator during regenerative braking (i.e., kinetic energy generated during vehicle braking/deceleration is converted into potential energy and stored in the battery of the EV). The types of motors generally employed in EVs include, but are not limited to DC series motor, Brushless DC motor (also known as BLDC motors), Permanent Magnet Synchronous Motor (PMSM), Three Phase AC Induction Motors and Switched Reluctance Motors (SRM).
[0041] The transmission system (18) of the EV (10) facilitates the transfer of the generated mechanical energy by the electric motor (16) to the wheels (22a, 22b) of the EV. Generally, the transmission systems (18) used in EVs include single speed transmission system and multi-speed (i.e., two-speed) transmission system, wherein the single speed transmission system comprises a single gear pair whereby the EV is maintained at a constant speed. However, the multi-speed/two-speed transmission system comprises a compound planetary gear system with a double pinion planetary gear set and a single pinion planetary gear set thereby resulting in two different gear ratios which facilitates higher torque and vehicle speed.
[0042] In one embodiment, all data pertaining to the EV (10) and/or charging infrastructure (20) are collected and processed using a remote server (known as cloud) (24), wherein the processed data is indicated to the rider/driver of the EV (10) through a display unit present in the dashboard (26) of the EV (10). In an embodiment, the display unit may be an interactive display unit. In another embodiment, the display unit may be a non-interactive display unit.
[0043] Embodiments explained herein relate to a mounting assembly for a vehicle. In particular, the present disclosure provides an assembly for mounting a rear-view mirror on a saddle-type vehicle.
[0044] In an aspect, the present disclosure describes an assembly for mounting a rear-view mirror on a saddle type vehicle. The assembly includes a top bracket and a bottom bracket each including at least one section of a tube profile. The top bracket and bottom bracket are collectively mounted on a handlebar of a saddle type vehicle. A bush of a pre-defined height is mounted on the top bracket for allowing a fitment of the rear-view mirror.
[0045] Various embodiments of the present disclosure will be explained in detail with respect to FIGs. 2-4.
[0046] FIG. 2 illustrates an exemplary perspective view (200) of a rear-view mirror (202) mounted on a rear-view mirror mounting assembly (204) of a saddle type vehicle, according to embodiments of the present disclosure.
[0047] With reference to FIG. 2, the rear-view mirror (202) may be mounted on a rear-view mirror mounting assembly (204). The rear-view mirror mounting assembly (204) may be integrated or mounted on a handlebar (206) of the saddle type vehicle. In some embodiments, the rear-view mirror mounting assembly (204) may be a casted mount for clamping the rear-view mirror (202) directly onto the handlebar (206) of the saddle type vehicle. In some embodiments, the rear-view mirror mounting assembly (204) may be a sheet metal mount for clamping the rear-view mirror (202) onto the handlebar (206) of the saddle type vehicle. In some embodiments, the rear-view mirror mounting assembly (204) may be a sheet metal mount for eccentric mounting of the rear-view mirror (202) on the handlebar (206) of the saddle type vehicle.
[0048] The rear-view mirror mounting assembly (204) may be provided for mounting the rear-view mirror (202) at an intended position, without making any costly modifications in a brake assembly of the saddle type vehicle. In some embodiments, the rear-view mirror mounting assembly (204) may be provided as a separate part which is cost-effective and satisfies structural requirements.
[0049] FIGs. 3A and 3B illustrate an isometric view (300A) and a side view (300B) of an assembly (204) for mounting a rear-view mirror (202) on a saddle type vehicle, according to embodiments of the present disclosure.
[0050] With reference to FIGs. 3A and 3B, it may be appreciated that the assembly (204) for mounting the rear-view mirror (202) may be interchangeably referred to as a rear-view mirror mounting assembly (204).
[0051] In some embodiments, the rear-view mirror mounting assembly (204) may include a top bracket (304) and a bottom bracket (312). Each of the top bracket (304) and the bottom bracket (312) may include at least one section of a tube profile (310a, 310b). The tube profiles (310a, 310b) may provide a required contact area on a handlebar (206) or a handlebar tube of a saddle type vehicle for welding and proper positioning of the rear-view mirror mounting assembly (204) on the handlebar (206) or the handlebar tube.
[0052] In some embodiments, the top bracket (304) and the bottom bracket (312) may be collectively mounted on the handlebar (206) or the handlebar tube of the saddle type vehicle.
[0053] In some embodiments, the rear-view mirror mounting assembly (204) may include a bush (302). The bush (302) may be formed of a pre-defined height. In some embodiments, the bush (302) may be, for example, a 14mm long steel bush. In some embodiments, the height of the bush (302) may vary from 10mm to 20mm. In some embodiments, the shape of the bush (302) may be the same as the shape of an adapter of the rear-view mirror (202).
[0054] In some embodiments, the bush (302) may be mounted on the top bracket (304) for allowing a fitment of the rear-view mirror (202). In some embodiments, the bush (302) may include one or more internal threads to enable the fitment of the rear-view mirror (202) to the top bracket (304).
[0055] In some embodiments, the top bracket (304), the bush (302), and the bottom bracket (312) may be provided as individual parts. In some embodiments, the top bracket (304), the bush (302), and the bottom bracket (312) may be configured in a pre-defined orientation for enabling the mounting of the rear-view mirror (202) on the handlebar (206) of the saddle type vehicle.
[0056] In some embodiments, the top bracket (304), the bush (302), and the bottom bracket (312) may be provided as a singular integrated unit for enabling the mounting of the rear-view mirror (202) on the handlebar (206) of the saddle type vehicle.
[0057] In some embodiments, the top bracket (304) and the bottom bracket (312) may be entirely superimposed on one another. In some embodiments, the top bracket (304) and the bottom bracket (312) may include a pre-defined degree of offset for facilitating the mounting of the rear-view mirror (202) in at least one direction, for example, X direction.
[0058] In some embodiments, each of the top bracket (304) and the bottom bracket (312) may include a rib section (306). In some embodiments, the rib section (306) may provide structural stiffness to each of the top bracket (304) and the bottom bracket (312) to resist vibrations of the rear-view mirror (202) in one direction, i.e., Z direction.
[0059] In some embodiments, the top bracket (304) may include at least one female part (not shown). In some embodiments, at least one female part may be positioned underneath the bush (302) for receiving a male part on one end of the rear-view mirror (202).
[0060] In some embodiments, the top bracket (304) may include a hole (302a) (as illustrated in FIG. 4A). In some embodiments, the hole (302a) may be provided for proper positioning of the bush (302) on the top bracket (304). In some embodiments, the hole (302a) may be provided in the top bracket (304), such that the bush (302) may not interfere with any other parts of the top bracket (304).
[0061] In some embodiments, the bottom bracket (312) may include a pre-defined section of a female part. In some embodiments, the pre-defined section of the female part may facilitate a plurality of variations in positioning of the top bracket (304) over the bottom bracket (312). In some embodiments, the circumference of the pre-defined section of the female part may be more than the circumference of the hole (302a) in the top bracket (304). Therefore, the pre-defined section of the female part may facilitate a plurality of variations in positioning and assembling of the top bracket (304) and the rear-view mirror (202) without any interference.
[0062] In some embodiments, the bottom bracket (312) may include at least one flange (308). In some embodiments, the flange (308) may be provided in the bottom bracket (312) for providing structural stiffness to the bottom bracket (312) to resist vibrations of the rear-view mirror (202) in both the directions, i.e., X direction and Z direction.
[0063] FIGs. 4A and 4B illustrate example schematic views (400A, 400B) depicting different welds used in an assembly (204) for mounting a rear-view mirror (202) on a saddle type vehicle, according to embodiments of the present disclosure.
[0064] With reference to FIGs. 4A and 4B, a bush (302) may be welded onto a top bracket (304) via a predefined weld (402). In some embodiments, the predefined weld (402) may be provided to avoid interference with a master cylinder. In some embodiments, the predefined weld may be configured in a ratio of 3:1. In some embodiments, the predefined weld may be configured as, for example, a 270-degree weld.
[0065] In some embodiments, the top bracket (304) may be welded with a bottom bracket (312) via a weld (404). In some embodiments, a plug weld (406) may be provided to weld the top bracket (304) and the bottom bracket (312). In some embodiments, the plug weld (406) may be provided to prevent opening up of the top bracket (304) and the bottom bracket (312) and to prevent interference with a master cylinder.
[0066] Furthermore, embodiments of the disclosed devices and systems may be readily implemented, fully or partially, in software using, for example, object or object-oriented software development environments that provide portable source code that can be used on a variety of computer platforms. Alternatively, embodiments of the disclosed methods, processes, modules, devices, systems, and computer program product can be implemented partially or fully in hardware using, for example, standard logic circuits or a very-large-scale integration (VLSI) design. Other hardware or software can be used to implement embodiments depending on the speed and/or efficiency requirements of the systems, the particular function, and/or particular software or hardware system, microprocessor, or microcomputer being utilized.
[0067] In this application, unless specifically stated otherwise, the use of the singular includes the plural and the use of “or” means “and/or.” Furthermore, use of the terms “including” or “having” is not limiting. Any range described herein will be understood to include the endpoints and all values between the endpoints. Features of the disclosed embodiments may be combined, rearranged, omitted, etc., within the scope of the invention to produce additional embodiments. Furthermore, certain features may sometimes be used to advantage without a corresponding use of other features.
[0068] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The scope of the disclosure is determined by the claims that follow. The disclosure 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 present disclosure when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE PRESENT DISCLOSURE
[0069] The present disclosure provides an assembly for mounting a rear-view mirror on a saddle-type vehicle in a cost-effective manner.
[0070] The present disclosure provides an assembly that satisfies structural for mounting a rear-view mirror on a saddle-type vehicle.
[0071] The present disclosure provides an assembly for mounting a rear-view mirror on a saddle-type vehicle as a separate part or a singular integrated unit, which reduces an overall mounting cost.
[0072] The present disclosure provides an assembly that consists of various welds to meet structural requirements by considering layout constraints and manufacturing constraints.
[0073] The present disclosure provides an assembly that includes a predefined weld to avoid interference with a master cylinder.

List of References:
Rear-view mirror (202)
Rear-view mirror mounting assembly (204)
Handlebar (206)
Bush (302)
Hole (302a)
Top Bracket (304)
Rib Section (306)
Flange (308)
Tube Profile(s) (310a, 310b)
Bottom Bracket (312)
Pre-defined Weld (402)
Weld (404)
Plug Weld (406)
, Claims:1. An assembly (204) for mounting a rear-view mirror (202) on a saddle type vehicle, the assembly (204) comprising:
a top bracket (304) and a bottom bracket (312), each comprising at least one section of a tube profile (310a, 310b), wherein the top bracket (304) and the bottom bracket (312) are collectively mounted on a handlebar (206) of a saddle type vehicle; and
a bush (302) of a pre-defined height mounted on the top bracket (304) for allowing a fitment of a rear-view mirror (202) on the handlebar (206).

2. The assembly (204) as claimed in claim 1, wherein the top bracket (304) and the bottom bracket (312) are either entirely superimposed or comprise a pre-defined degree of offset for facilitating mounting of the rear-view mirror (202) in at least one direction.

3. The assembly (204) as claimed in claim 1, wherein the top bracket (304) comprises at least one female part positioned underneath the bush (302) for receiving a male part on one end of the rear-view mirror (202).

4. The assembly (204) as claimed in claim 1, wherein the bottom bracket (312) comprises a pre-defined section of a female part for facilitating a plurality of variations in positioning of the top bracket (304) over the bottom bracket (312).

5. The assembly (204) as claimed in claim 1, wherein each of the top bracket (304) and the bottom bracket (312) comprise a rib section (306) for providing structural stiffness to each of the top bracket (304) and the bottom bracket (312) to resist vibrations of the rear-view mirror (202) in Z direction.

6. The assembly (204) as claimed in claim 1, wherein the bottom bracket (312) comprises at least one flange (308) for providing structural stiffness to the bottom bracket (312) to resist vibrations of the rear-view mirror (202) in X direction and Z direction.

7. The assembly (204) as claimed in claim 1, wherein the bush (302) comprises one or more internal threads to enable fitment of the rear-view mirror (202) to the top bracket (304).

8. The assembly (204) as claimed in claim 1, wherein the top bracket (304), the bush (302), and the bottom bracket (312) are individual parts which are configured in a pre-defined orientation for enabling mounting of the rear-view mirror (202).

9. The assembly (204) as claimed in claim 1, wherein the top bracket (304), the bush (302), and the bottom bracket (312) are formed as a singular integrated unit for enabling mounting of the rear-view mirror (202).

10. The assembly (204) as claimed in claim 1, wherein the bush (302) is welded onto the top bracket (304) via a predefined weld to avoid interference with a master cylinder, wherein the predefined weld is configured in a ratio of 3:1.