Claims:We Claim:
1. A connector assembly (307) for a side cover (205) of an engine assembly (108), said connector assembly (307) comprising:
one or more primary member (307a); and
one or more secondary member (307b);
wherein said primary member (307a) is detachably attached to an upper horizontal surface (205a) of said side cover (205).

2. The connector assembly (307) for a side cover (205) of engine assembly (108) as claimed in claim 1, wherein said secondary member (307b) is detachably attached to an inner lateral surface (205b) of said side cover (205).

3. The connector assembly (307) for a side cover (205) of an engine assembly (108) as claimed in claim 1, wherein said primary member (307a) is configured to have a first portion (307ac) which is substantially orthogonally coplanar with a second portion (307ab) of said primary member (307a).

4. The connector assembly (307) for a side cover (205) of an engine assembly (108) as claimed in claim 3, wherein said first portion (307ac) is extending in a lateral direction (C-C’) and said second portion (307ab) is extending in a longitudinal direction (Y-Y’).

5. The connector assembly (307) for a side cover (205) of engine assembly (108) as claimed in claim 3, wherein said second portion (307ab) is configured to have a plurality of locking means (307ad) for abuttingly couple with said upper horizontal surface (205a) of said side cover (205).

6. The connector assembly (307) for a side cover (205) of engine assembly (108) as claimed in claim 3, wherein said second portion (307ab) is configured to have a circular portion (307ae), said circular portion (307ae) has a hole (307aea) adapted to receive an attachment means (206) to attach with a crankcase (201).

7. The connector assembly (307) for a side cover (205) of engine assembly (108) as claimed in claim 6, wherein said circular portion (307ae) is configured to have at least one guide leg (307aa) projecting from an outer surface (307aeb) of the circular portion (307ae) to guide the wiring harness in a secure and safe routing.

8. The connector assembly (307) for a side cover (205) of an engine assembly (108) as claimed in claim 1, wherein said secondary member (307b) is configured with a first circular portion (307ba) and a second circular portion (307bb).

9. The connector assembly (307) for a side cover (205) of an engine assembly (108) as claimed in claim 1, wherein said secondary member (307b) is configured to have a locking means (307bd) projecting from the second circular portion (307bb) to abuttingly couple with a conjugate locking means (307bd) on the side cover (205).

10. The connector assembly (307) for a side cover (205) of an engine assembly (108) as claimed in claim 9, wherein said locking means (307bd) is extending outwardly from the second circular portion (307bb).

11. An engine assembly (108) for a vehicle (100) comprising:
a crankcase (201), said crankcase extending rightward and leftward in a lateral direction (C-C’) of the longitudinal axis;
a side cover (205) is detachably attached to said crankcase (201);
a connector assembly (307) as claimed in claim 1. , Description:TECHNICAL FIELD
[0001] The present subject matter relates to an engine assembly. More particularly to a side cover of the engine assembly.

BACKGROUND
[0002] Over the past few years, conversion of conventional straddle type vehicles for off road use is trending. The aftermarket modification includes modification to frame, engine, exhaust or tire of the vehicle. But one of the popular modifications is to replace conventional tires with an oversize tire. The use of oversize tires has benefits of improving the handling, maneuverability and gives unique appearance to the vehicle but albeit at a cost.

BRIEF DESCRIPTION OF THE DRAWINGS
[0003] The detailed description is explained with reference to an embodiment of a forwardly inclined single cylinder air cooled engine assembly for a straddle type vehicle with the accompanying figures. The same numbers are used throughout the drawings to reference like features and components.
[0004] Fig. 1 illustrates a left side view of a straddle type vehicle.
[0005] Fig. 2 illustrates a left side view of the engine assembly with transmission assembly where few parts are omitted as per embodiment of the present invention.
[0006] Fig. 3a illustrates a left side view of the engine assembly with transmission assembly where few parts are omitted as per embodiment of the present invention.
[0007] Fig. 3b illustrates a localized cut section of the engine assembly with transmission assembly across plane A-A’.
[0008] Fig. 3c illustrates a localized cut section of the engine assembly with transmission assembly across plane B-B’.
[0009] Fig. 4a illustrates a perspective view of side cover assembled with a connector assembly, where few parts are omitted as per embodiment of the present invention.
[00010] Fig. 4b illustrates a perspective view of a primary and secondary member of the connector assembly as per embodiment of the present invention.

DETAILED DESCRIPTION
[00011] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder. It is contemplated that the concepts of the present invention may be applied to any type of vehicle employing the similar configuration within the spirit and scope of this invention. Further "front" and "rear", and "left" and "right" referred to in the ensuing description of the illustrated embodiment refer to front and rear, and left and right directions as seen from a rear portion of the vehicle and looking forward. Furthermore, a longitudinal axis unless otherwise mentioned, refers to a front to rear axis relative to the vehicle, while a lateral axis unless otherwise mentioned, refers generally to a side to side, or left to right axis relative to the vehicle. The detailed explanation of the constitution of parts other than the present subject matter which constitutes an essential part has been omitted at suitable places.
[00012] Typically, the straddle type vehicles (hereinafter “vehicles”) are easier to maneuver in traffic and congested areas. The vehicles provide good control with better operability in heavy, stop and go driving. Such vehicles are also lighter in weight as compared to corresponding vehicles like four-wheeler. Generally, the vehicle comprising of a body frame assembly made of a number of tubes welded together. The vehicle has a steerable front wheel and a driven rear wheel. The body frame primarily includes a head pipe disposed at a front end of the body frame, main tube running across the longitudinal axis of the vehicle and enclosed by several vehicle components, and a down tube. The vehicle is powered by a prime mover. The prime mover includes an internal combustion engine or an electric motor. The engine can be liquid cooled or air cooled. The engine or electric motor is mounted to the frame assembly of the vehicle. The engine in said vehicle is disposed at a lower region and provides a lower center of gravity making it easier to balance and control giving it better turnability and maneuverability. The engine or electric motor is functionally connected to a rear wheel, which provides the forward motion to the vehicle. Typically, pluralities of panels are mounted to the frame assembly of the vehicle that cover various vehicle components. The final drive to the rear wheel of the vehicle is usually a positive drive such as sprocket and chain arrangement.
[00013] Generally, customers who do own the vehicle tend to take pride in the appearance and performance of the vehicle. The vehicle owners tend to make custom modification in the vehicle to improve external appearance of the vehicle or to change the performance of the vehicle to their likes or to convert it into off road use. One of the popular modifications is to replace the original tire with a wide tire. The wide tire improves the ride quality, handling, and maneuverability of the vehicle.
[00014] However, oversize aftermarket tire cannot simply be swapped into the vehicle because of varied reasons. Like when the wide tire fitted on a rim, there is a problem such as reduction in clearance between the chain and the wide tire. The reduction of clearance has profound consequences like rubbing of the chain with the wide tire that adversely affects the durability of the chain as well as the tire. In addition to that, rubbing creates an irritating noise which leads to rider discomfort. Finally, it results in rough performance of the vehicle accompanied by noise and vibration resembling a rattle which increases with speed of the vehicle. Hence maintaining optimum working clearance is very important to ensure efficient transmission and to maintain the durability of the transmission parts. In order to maintain the same clearance between the wide tire and the chain, the chain needs to be mounted away from the wide tire. However, when the chain is moved from its original position to a new position in a lateral direction of the vehicle due to wide tire, a drive sprocket fitted on an engine output shaft needs to be moved away corresponding to change in a driven sprocket to maintain the alignment and proper tension. This leads to change in position of a side cover which partially covers the chain and sprocket arrangement to avoid the rubbing between side cover and the chain or drive sprocket. The side cover protects chain and sprocket arrangement from dust and water. However, the originally fitted side cover cannot be used to address aftermarket modification which leads to use of new side cover. Unless an alternate side cover design in available as accessory, the entire flexibility for the user, to modify the tire of the vehicle, can get constrained.
[00015] In addition to above, while changing original tire with oversize or wide tire it is important to maintain the proper wrap angle between the driven sprocket and the chain.As the drive sprocket, driven sprocket and number of sprocket teeth are usually decided when the powertrain is designed, since various factors determine the number of chain pitches and wrap angle and sprocket position, Hence, it is important to have appropriate wrap angle, which ensures proper load transfer between chain and the sprockets as well as good durability or life of the chain itself.
[00016] Further, in recent times, the numbers of electrical components such as switches, sensors, actuators, and the like have increased along with development of electronics for vehicles. This has resulted in enlarged and complicated cables for connecting electrical components which pose a serious problem of safety and risk while using vehicles with aftermarket modification. Specifically, risks like fire hazard, short circuit, etc. rise because of increase in the number of cables, and divergence of the cables in various directions. Moreover, the modification can affect the cable durability or may get crushed due to improper assembly. Further, alternative way to protect the cables is by adding plurality of dedicated protectors or grommets but this adds more weight and cost to the vehicle plus can make the vehicle look ugly. Therefore, vehicle modifications either become unviable reducing user flexibility or tend to be undesirably costly due to use of plurality of custom parts and corresponding changes using special tools.
[00017] Hence, there is a need to provide a flexible vehicle assembly design which can allow customer to install oversize aftermarket tire without changing the side cover with modified or new one.
[00018] It is an object of the present invention is to provide a flexible and adaptable assembly which enables the customer to use the original tire or an oversize aftermarket tire.
[00019] It is another object of the present invention to provide an assembly which gives custom flexibility to use oversize tire without affecting wiring durability.
[00020] It is yet another object of the present invention is to provide an assembly which enables use of oversize tire without affecting vehicle performance.
[00021] According to the present subject matter to achieve the above mentioned objectives, a first characteristic of the present invention is an engine assembly comprising of a crankcase, said crankcase extending rightward and leftward in a lateral direction of the longitudinal axis. A side cover is detachably attached to the crankcase. A connector assembly is attached to the side cover. The connector assembly comprising one or more primary member; and one or more secondary member wherein primary member said is detachably attached to an upper horizontal surface of the side cover.
[00022] In addition to the first characteristic, a second characteristic of the present invention is an engine assembly, wherein said secondary member is detachably attached to an inner lateral surface of the side cover.
[00023] In addition to the first characteristic, a third characteristic of the present invention is an engine assembly, wherein said primary member is configured to have a first portion which is substantially coplanar with a second portion of the primary member.
[00024] In addition to the first characteristic and third characteristic, a fourth characteristic of the present invention is an engine assembly, wherein said first portion is extending in a lateral direction of a vehicle and second portion is extending in a longitudinal direction of the vehicle.
[00025] In addition to the first characteristic and third characteristic, a fifth characteristic of the present invention is an engine assembly, wherein said second portion is configured to have a plurality of locking means for abutting with the upper horizontal surface of the side cover.
[00026] In addition to the first characteristic and third characteristic, a sixth characteristic of the present invention is an engine assembly, wherein said second portion is configured to have a circular portion, said circular portion has a hole adapted to receive an attachment means.
[00027] In addition to the first characteristic and sixth characteristic, a seventh characteristic of the present invention is an engine assembly, wherein said circular portion is configured to have at least one guide leg projecting from an outer surface of the circular portion.
[00028] In addition to the first characteristic, an eight characteristic of the present invention is an engine assembly, wherein said secondary member is configured with a first circular portion and a second circular portion.
[00029] In addition to the first characteristic, a ninth characteristic of the present invention is an engine assembly, wherein said secondary member is configured to have a locking protrusion projecting from the second circular portion.
[00030] In addition to the first characteristic and ninth characteristic, a tenth characteristic of the present invention is an engine assembly, wherein said locking protrusion is extending outwardly from the second circular portion.
[00031] The foregoing disclosure is not intended to limit the present disclosure to the precise forms or particular fields of use disclosed. As such, it is contemplated that various alternate embodiments and/or modifications to the present disclosure, whether explicitly described or implied herein, are possible in light of the disclosure. Having thus described embodiments of the present disclosure, a person of ordinary skill in the art will recognize that changes may be made in form and detail without departing from the scope of the present disclosure. Thus, the present disclosure is limited only by the claims.
[00032] In the foregoing specification, the disclosure has been described with reference to specific embodiments. However, as one skilled in the art will appreciate, various embodiments disclosed herein can be modified or otherwise implemented in various other ways without departing from the spirit and scope of the disclosure. Accordingly, this description is to be considered as illustrative and is for the purpose of teaching those skilled in the art the manner of making and using various embodiments of the disclosure. It is to be understood that the forms of disclosure herein shown and described are to be taken as representative embodiments. Equivalent elements, materials, processes or steps may be substituted for those representatively illustrated and described herein. Moreover, certain features of the disclosure may be utilized independently of the use of other features, all as would be apparent to one skilled in the art after having the benefit of this description of the disclosure. Expressions such as “including”, “comprising”, “incorporating”, “consisting of”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.
[00033] Further, various embodiments disclosed herein are to be taken in the illustrative and explanatory sense, and should in no way be construed as limiting of the present disclosure. All joinder references (e.g., attached, affixed, coupled, connected, etc.) are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer that two elements are directly connected to each other.
[00034] Additionally, all numerical terms, such as, but not limited to, “first”, “second”, “third”, “primary”, “secondary”, “main” or any other ordinary and/or numerical terms, should also be taken only as identifiers, to assist the reader's understanding of the various elements, embodiments, variations and/or modifications of the present disclosure, and may not create any limitations, particularly as to the order, or preference, of any element, embodiment, variation and/or modification relative to, or over, another element, embodiment, variation and/or modification.
[00035] It will also be appreciated that one or more of the elements depicted in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed or rendered as inoperable in certain cases, as is useful in accordance with a particular application. Additionally, any signal hatches in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically specified.
[00036] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[00037] With reference to Figure 1, a description is made of an entire schematic structure of a straddle type vehicle two wheeled vehicle (hereinafter “vehicle”) (100). The vehicle (100) includes a body frame (101) to support different parts of said vehicle (100). A head pipe (102) is provided at a front end of the body frame (101). The head pipe (102) supports a steering shaft (not shown) rotatably in a certain range. In an upper portion of the head pipe (102), a handlebar assembly (103) is rotatably integrally connected to the steering shaft (not shown). The handlebar assembly (103) is used to steer the vehicle (100) and is connected to a front wheel (104) through the steering shaft (not shown). An upper portion of the front wheel (104) is covered by a front fender (105) which prevents mud and water from getting deflected towards the steering shaft (not shown). Further, a front fork assembly (106) is supported partially on the front fender (105) and is connected to the front wheel (104).In a front portion of the body frame (101) a fuel tank (107) is arranged immediately behind the handlebar (103) and is disposed over an internal combustion engine assembly, (hereinafter ‘engine assembly’) (108). A seat (109) is placed behind the fuel tank (107). The seat (109) includes a front rider portion and rear pillion portion. For the safety of the rider and in conformance with the traffic rules, a headlamp unit (110) and a turn signal lamp unit (111) is provided in a front portion of the vehicle (100). The headlamp unit (110) and the turn signal lamp unit (111) are housed in a headlamp housing assembly (112). Suspension systems are provided for comfortable steering of the vehicle (100) on the road. The front fork assembly (106), which forms the front suspension system, serves as rigidity component just like the body frame (101). The front fork assembly (106) clamped to the head pipe (102) through an upper bracket (113a) and a lower bracket (113b) is capable of being moved to the left and right. Further, a rear suspension system, which is a hydraulic damped arrangement, is connected to the body frame (101). The rear suspension system comprises of at least one rear suspension preferably on a left hand side of the vehicle (100). However, in a vehicle (100) with two rear suspensions, the same may be disposed on the left side and the right side respectively of said vehicle (100).The engine assembly (108) is mounted to a front lower portion of the body frame (101) by means of a first engine mounting bracket (not shown). The engine assembly (108) is equipped with an exhaust system that includes an exhaust pipe (not shown) connected to the engine assembly (108) and a muffler (not shown) connected to the exhaust pipe. The muffler (not shown) extends rearwards along the right side of a rear wheel (114). Power from the engine assembly (108) is transmitted to a driven sprocket (119) through a transmission assembly (118), so as to drive and rotate a rear wheel (114). Particularly, speed change is achieved by operation of a gear shift linkage assembly (115) which is operatively connected to a gear shift shaft (not shown). Thus, power from the engine assembly (108) is transmitted to the rear wheel (114) rotatably supported at a rear end of a swing arm (116). A rear fender (117) for covering an upper side of the rear wheel (114) is mounted to a rear portion of body frame (101) to prevent mud and water splashed by the rotating rear wheel (114) from entering the muffler, the engine assembly (108) and other parts disposed close by .
[00038] Figure 2 illustrates a left side view of the engine with transmission assembly, in accordance with one example implementation of the present subject matter where few parts are omitted from the figures. The engine assembly (108) comprises of a crankcase (201), a cylinder block (202) mounted to the crankcase (201) and a cylinder head (203) that is mounted to the cylinder block (202). The cylinder head (203) and the cylinder block (202) are collectively referred to as a cylinder portion (203, 202). A cylinder head cover (204) is mounted to the cylinder head (203) that is casing a valve train (not shown). The cylinder head cover (204), the cylinder head (203) and, the cylinder block (202) are secured to the crankcase (201) through one or more bolts. The crankcase (201) includes a crankcase-left member (201L) disposed on left hand side LH and a crankcase-right member (not shown) disposed adjacently to the crankcase-left member on the right hand side RH, which are adapted to support engine parts including cylinder portion (203, 202). Also, the crankcase (201) is provided with apertures and mounting portion(s) to support various engine parts. A side cover (205) is detachably attached to one lateral side of the crankcase (201) using attachment means (206), which is as per an embodiment on a left hand side LH lateral face of the crankcase (201L)
[00039] Figure 3a illustrates a left side view of the engine assembly (108) with transmission assembly (118) where few parts are omitted as per embodiment of the present invention. Figure 3b illustrates a localized cut section of the engine assembly (108) with transmission assembly (118) across plane A-A’. Figure 3c illustrates a localized cut section of the engine assembly (108) with transmission assembly (118) across plane B-B’. Figure 3a, Figure 3b and 3c will be discussed together for brevity. The drive power is provided by the engine assembly (108), and is delivered through the transmission assembly (118). The transmission assembly (118) includes a drive sprocket (301) mounted on one end of transmission output shaft (not shown). The side cover (205) is positioned close to and parallel to the drive sprocket (301) such that it partially surrounds the drive sprocket (301) and a chain (302) adjacent thereto. The chain (302) wraps drive sprocket (301) and the driven sprocket (119) (as shown in figure 1) in an endless loop and delivers drive power to the rear wheel (114). Further, one or more gear position detector (303) is located outside of a side wall of the LH Crankcase (201L) and near the outer periphery of a generator cover (304). A cable (303a) of the gear position detector (303) is operatively connected to a display unit (not shown) configured to display gear position. A magneto or ISG (not shown) is housed in the generator cover (304). The generator cover (304) is detachably attached to the LH crankcase (201L) using a plurality of attachment means (304a). The fuel ignition timing is detected by a pulsar coil (not shown) or similar detection means. The pulsar coil (not shown) is so disposed that it faces a magnet provided on the outer periphery of the magneto or ISG (Integrated Starter Generator) (not shown).The fuel ignition timing is obtained according to a magnet detection signal, i.e., a crankshaft (not shown) rotation detection signal, from the pulsar coil (not shown). The pulsar coil signal is transmitted to a control system (not shown) for deciding the fuel ignition timing through a pulsar coil cable (305). The gear positioning detector cable (303a) and pulsar coil cable (305) pass through a space (E) defined between a rib (306) and upper side cover mount boss (308). The rib (306) and upper side cover mount boss (307) are extending from the LH crankcase (201L) in a lateral direction (C-C’) of the engine assembly (108). A connector assembly (307) is detachably attached to the side cover (205). The connector assembly (307) comprising a primary member (307a). The primary member (307a) is detachably attached to an upper horizontal surface (205a) of the side cover (205). Further, when the side cover (205) is assembled to the LH crankcase (201L) the defined space (E) is enclosed by the primary member (307a) to avoid fouling of cables (305, 303a) with the transmission parts including chain (302), drive sprocket (301).More specifically, a guide leg (307aa) protruding from the primary member (307a) encloses the defined space (E) .
[00040] Figure 4a illustrates a perspective view of side cover (205) assembled with a connector assembly (307), where few parts are omitted as per embodiment of the present invention. Figure 4b illustrates a perspective view of a primary and secondary member of the connector assembly as per embodiment of the present invention. Figure 4a and 4b will be discussed together for brevity. The connector assembly (307) includes the primary member (307a) and a secondary member (307b). The secondary member (307b) is detachably attached to an inner lateral surface (205b) of the side cover (205). The primary member (307a) is configured to have a first portion (307ac) which is substantially orthogonally coplanar with a second portion (307ab) of the primary member (307a). The first portion (307ac) is extending in the lateral direction (C-C’) of the vehicle (100) (as shown in figure 1) and second portion (307ab) is extending in a longitudinal direction (Y-Y’) of the vehicle (100) (as shown in figure 1). The second portion (307ab) is configured to have a plurality of locking means (307ad) for abuttingly couple with the upper horizontal surface (205a) of the side cover (205). The second portion (307ab) is configured to have a circular portion (307ae), said circular portion (307ae) has a hole (307aea) adapted to receive attachment means (206) (as shown in figure 2). The circular portion (307ae) configured to have at least one guide leg (307aa) projecting from an outer surface (307aeb) of the circular portion (307ae). Further, the secondary member (307b) is configured to have a first circular portion (307ba) and a second circular portion (307bb). The secondary member (307b) has a through hole (307bc) adapted to receive the attachment means (206) (as shown in figure 2). The secondary member (307b) configured to have a locking means (307bd) projecting from a portion of second circular portions (307bb). Further, the locking means (307bd) is extending outwardly from the second circular portion (307bb).
[00041] According to above architecture, the primary efficacy of the present invention is that the connector assembly can be easily assembled in a stock vehicle as an add-on accessory where the connector assembly protects the plurality of cables running in and out from the engine assembly by defining and secure enclosed space for routing of harness. This eliminates the fouling of the wires with the transmission parts in all drive terrain conditions and provides the customer or user the flexibility to use oversize tire without affecting mounting, layout routing as well as durability of the cables.
[00042] According to above architecture, the primary efficacy of the present invention is that the connector assembly increases the gap between the side cover and the drive sprocket thereby allowing lateral movement of the drive sprocket to facilitate the use of big size drive wheel.
[00043] According to above architecture, the primary efficacy of the present invention is that the connector assembly is a cost effective solution to improve the durability of cables without any change in design of the side cover and allow customers to install oversize aftermarket tire without changing the side cover with modified or new one.
[00044] According to above architecture, the primary efficacy of the present invention is that the connector assembly improves the NVH performance of the vehicle by eliminating the fouling of cables and side cover with the transmission parts.
[00045] According to above architecture, the primary efficacy of the present invention is that the connector assembly provides flexibility to customer to restore the original state i.e. from wide tire to original by removing connector assembly from the side cover. The removal operation of conversion assembly from side cover can be performed without use of specialized tools and same side cover can be used.
[00046] While the present invention has been shown and described with reference to the foregoing preferred embodiments, it will be apparent to those skilled in the art that changes in form, connection, and detail may be made therein without departing from the spirit and scope of the invention.

List of references:

Longitudinal axis (YY’)
Lateral axis (LL’)
Upward direction (Up)
Downward direction (Dw)
Frame assembly (F)
F Front
R Rear
100 Vehicle
101 Body frame
102 Head pipe
103 Handle bar
104 Front wheel
105 Front fender
106 Front for assembly
107 Fuel tank
108 Engine assembly
109 Seat
110 Head lamp unit
111 Turn signal lamp
112 Head lamp housing assembly
113a & 113b upper bracket & lower bracket
114 Rear wheel
115 Gear shift linkage assembly
116 Swing arm
117 Rear fender
118 Transmission assembly
119 Driven sprocket
201 Crankcase
202 Cylinder block
203 Cylinder head
204 Cylinder head cover
205 Side cover
206 Attachment means
301 Drive sprocket
302 Chain
303 Gear position detector
303a Gear position detector cable
304 Generator
304a Attachment means
305 Pulsar coil cable
306 Rib
307 Connector assembly
307a Primary member
307aa Guide leg
307ab Second portion
307ac First portion
307ad Locking means in primary member
307ae Circular portion
307aea Hole in primary member
307aeb Outer surface of circular portion
307b Secondary member
307ba First circular portion
307bb Second circular portion
307bc hole in secondary member
307bd Locking means in secondary member
308 Upper side cover mount boss