阅读说明：本技术 水冷式摩托车、动力总成及离合器盖板 (Water-cooled motorcycle, power assembly and clutch cover plate ) 是由 伍雄杰 林健明 李建统 卢海海 于 2021-09-30 设计创作，主要内容包括：本发明涉及一种水冷式摩托车、动力总成及离合器盖板,将盖本体采用焊接等不可拆卸的方式或螺接等可拆卸方式设置在曲轴箱远离水冷系统的一侧,使得曲轴远离水冷系统的一端与盖本体上的调节口对应设置,再利用封堵件对调节口进行封堵。当需要进行气门间隙调整等维修保养任务而需要转动曲轴以使得发动机的活塞处于上止点位置时,只需将封堵件与盖本体分离而打开调节口,即可简单、方便的对曲轴进行转动,不需对整个水冷系统进行拆除,节省工时。(The invention relates to a water-cooled motorcycle, a power assembly and a clutch cover plate.A cover body is arranged on one side of a crank case far away from a water cooling system in a non-detachable mode such as welding or a detachable mode such as screw joint, so that one end of a crank shaft far away from the water cooling system is arranged corresponding to an adjusting opening on the cover body, and the adjusting opening is plugged by a plugging piece. When maintenance tasks such as valve clearance adjustment and the like need to be carried out and the crankshaft needs to be rotated so that the piston of the engine is positioned at the top dead center position, the crankshaft can be simply and conveniently rotated only by separating the plugging piece from the cover body and opening the adjusting port without dismantling the whole water cooling system, and the working time is saved.)

1. The utility model provides a clutch cover plate, sets up in the bent axle one side of keeping away from water cooling system, its characterized in that, including covering body and shutoff piece, it is equipped with the correspondence to cover the body the regulation mouth that the bent axle set up, the shutoff piece is used for right the regulation mouth carries out the shutoff, just the shutoff piece with the connection can be dismantled to the lid body.

2. The clutch cover according to claim 1, wherein the cover body is provided with an interference portion for interference engagement with the blocking member, so that the blocking member has a tendency to move toward a direction approaching the cover body.

3. The clutch cover plate according to claim 2, wherein the outer surface of the cover body is provided with a boss surrounding the adjusting opening, the blocking member comprises a closed end located outside the adjusting opening, and the closed end is provided with a slot in plug fit with the boss.

4. The clutch cover plate according to claim 3, wherein the closed end includes a first elastic flange, the side of the boss away from the adjustment opening is provided with the interference portion, and the interference portion is in interference fit with the inner side wall of the insertion groove, so that the first elastic flange deforms toward the direction away from the boss and has a tendency to contract toward the direction close to the boss.

5. The clutch cover plate according to claim 3, wherein the plugging member includes an insertion end engaged with the adjustment opening, and an outer side wall of the insertion end is provided with a locking portion engaged with an inner surface of the cover body.

6. The clutch cover according to claim 2, wherein the adjustment opening has a first hole and a second hole which are communicated with each other, the diameter of the first hole is larger than that of the second hole, the inner side wall of the second hole is provided with an internal thread, the blocking member comprises a cover body matched with the first hole and a connecting body matched with the second hole, and the outer side wall of the connecting body is provided with an external thread in threaded connection with the internal thread.

7. The clutch cover of claim 6, wherein the bottom wall of the first aperture defines a mounting slot, and further comprising a sealing member disposed within the mounting slot, the sealing member being in sealing engagement with the cover.

8. The clutch cover of claim 7, wherein the cover includes a second resilient flange, the sealing member is disposed adjacent to the connecting body, and the sealing member protrudes from the mounting groove by a predetermined height to form the interference portion, such that the second resilient flange is deformed toward the direction protruding from the first hole and has a tendency to contract toward a direction approaching the bottom wall of the first hole.

9. A power assembly comprising a crankcase and a clutch cover as claimed in any one of claims 1 to 8, the clutch cover being connected to a side of the crankcase remote from a water cooling system.

10. A water-cooled motorcycle, characterized by comprising the power train according to claim 9.

Technical Field

The invention relates to the technical field of transportation, in particular to a water-cooled motorcycle, a power assembly and a clutch cover plate.

Background

When a water-cooled motorcycle is subjected to maintenance, for example, when it is necessary to adjust a valve clearance, a crankshaft needs to be rotated so that a piston of an engine is at a top dead center position. The end of the crankshaft is completely shielded by the arrangement of a water cooling system (radiator and its piping) on one side of the engine. Therefore, when the crankshaft is rotated, the whole water cooling system needs to be dismantled, so that the disassembly and assembly difficulty is high, and the labor is consumed.

Disclosure of Invention

Therefore, it is necessary to provide a water-cooled motorcycle, a power assembly and a clutch cover plate for solving the problems of great difficulty and labor consumption in assembling and disassembling.

The technical scheme is as follows:

on the one hand, the clutch cover plate is arranged on one side, far away from a water cooling system, of a crankshaft and comprises a cover body and a plugging piece, wherein the cover body is provided with a corresponding adjusting opening, the crankshaft is arranged at the adjusting opening, the plugging piece is used for plugging the adjusting opening, and the plugging piece is detachably connected with the cover body.

The clutch cover plate of the embodiment is characterized in that the cover body is arranged on one side of the crankcase, which is far away from the water cooling system, in a non-detachable mode such as welding or a detachable mode such as screw connection, so that one end, far away from the water cooling system, of the crankshaft corresponds to the adjusting opening in the cover body, and the adjusting opening is blocked by the blocking piece. When maintenance tasks such as valve clearance adjustment and the like need to be carried out and the crankshaft needs to be rotated so that the piston of the engine is positioned at the top dead center position, the crankshaft can be simply and conveniently rotated only by separating the plugging piece from the cover body and opening the adjusting port without dismantling the whole water cooling system, and the working time is saved.

The technical solution is further explained below:

in one embodiment, the closure is deformable away from the cap body and has a tendency to contract towards the cap body.

In one embodiment, the outer surface of the cover body is provided with a boss surrounding the adjusting opening, the blocking piece comprises a closed end located outside the adjusting opening, and the closed end is provided with a slot in plug-in fit with the boss.

In one embodiment, the closed end includes a first elastic flange, one side of the boss, which is far away from the adjusting opening, is provided with an interference part, and the interference part is in interference fit with the inner side wall of the slot, so that the first elastic flange deforms towards the direction far away from the boss and has a tendency of contracting towards the direction close to the boss.

In one embodiment, the plugging piece comprises an insertion end which is in insertion fit with the adjusting port, and a clamping portion which is in clamping fit with the inner surface of the cover body is arranged on the outer side wall of the insertion end.

In one embodiment, the adjusting port has a first hole and a second hole which are communicated with each other, the diameter of the first hole is larger than that of the second hole, the inner side wall of the second hole is provided with an internal thread, the blocking piece comprises a cover body matched with the first hole and a connecting body matched with the second hole, and the outer side wall of the connecting body is provided with an external thread in threaded connection with the internal thread.

In one embodiment, the bottom wall of the first hole is provided with a mounting groove, the clutch cover plate further comprises a sealing element, the sealing element is arranged in the mounting groove, and the sealing element is in sealing fit with the cover body.

In one embodiment, the cover body includes a second elastic flange, the sealing member is disposed adjacent to the connecting body, and the sealing member protrudes from the mounting groove by a predetermined height, so that the second elastic flange is deformed toward the direction protruding from the first hole and has a tendency to contract toward the bottom wall adjacent to the first hole.

In another aspect, a power assembly is provided, which includes a crankcase and the clutch cover plate, wherein the clutch cover plate is connected with one side of the crankcase far away from the water cooling system.

The power assembly of the embodiment can simply and conveniently rotate the crankshaft without dismantling the whole water cooling system and saving working hours by only separating the plugging piece from the cover body and opening the adjusting opening when the crankshaft needs to be rotated to enable the piston of the engine to be positioned at the top dead center position by carrying out maintenance tasks such as valve clearance adjustment.

In another aspect, a water-cooled motorcycle is provided, which comprises the power assembly.

According to the water-cooled motorcycle provided by the embodiment, when maintenance tasks such as valve clearance adjustment are required to be carried out and the crankshaft is required to be rotated so that the piston of the engine is positioned at the top dead center position, the crankshaft can be simply and conveniently rotated by separating the plugging piece from the cover body and opening the adjusting port, the whole water cooling system is not required to be dismantled, and the working hours are saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of a powertrain according to one embodiment;

FIG. 2 is a schematic structural view of a clutch cover of the powertrain of FIG. 1;

FIG. 3 is a schematic structural view of the clutch cover of FIG. 2 after the cover body and the blocking member are separated;

FIG. 4 is a schematic structural view of the clutch cover plate of FIG. 2 after the cover body is engaged with the blocking member;

FIG. 5 is a cross-sectional view of one embodiment of a cover body A-A of the clutch cover of FIG. 4;

FIG. 6 is a cross-sectional view of another embodiment of a cover body A-A of the clutch cover of FIG. 4;

FIG. 7 is a cross-sectional view of yet another embodiment of a cover body A-A of the clutch cover of FIG. 4.

Description of reference numerals:

100. a clutch cover plate; 110. a cover body; 111. an adjustment port; 1111. a first hole; 1112. a second hole; 1113. mounting grooves; 112. a contact part; 113. a boss; 114. an outer surface; 115. an inner surface; 200. a blocking member; 210. a closed end; 211. a slot; 212. a first resilient flange; 2121. an outer side; 2122. a middle portion; 220. a plug end; 221. a clamping part; 230. a cover body; 231. a second resilient flange; 240. a linker; 300. a water cooling system; 400. a crankcase; 500. a crankshaft; 600. and a seal.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1, in one embodiment, a power assembly is provided, which includes a crankcase 400 and a clutch cover 100, wherein the clutch cover 100 is connected to a side of the crankcase 400 away from the water cooling system 300. In this way, the clutch cover 100 and the crankcase 400 are connected by welding, screwing, or the like, so that one end of the crankshaft 500, which is far from the water cooling system 300, can be sealed.

As shown in fig. 2 to 4, in one embodiment, a clutch cover 100 is provided on a side of the crankshaft 500 away from the water cooling system 300. Specifically, the clutch cover 100 includes a cover body 110 and a blocking piece 200. Wherein, the lid body 110 is provided with the regulation mouth 111 that sets up corresponding crankshaft 500, and the shutoff piece 200 is used for carrying out the shutoff to regulation mouth 111 to, shutoff piece 200 and lid body 110 can dismantle and be connected.

In the clutch cover plate 100 of the above embodiment, the cover body 110 is disposed on one side of the crankcase 400 far away from the water cooling system 300 by non-detachable means such as welding or detachable means such as screwing, so that one end of the crankshaft 500 far away from the water cooling system 300 is disposed corresponding to the adjusting opening 111 of the cover body 110, and the adjusting opening 111 is sealed by the sealing piece 200. When maintenance tasks such as valve clearance adjustment and the like are required and the crankshaft 500 needs to be rotated so that the piston of the engine is located at the top dead center position, the crankshaft 500 can be simply and conveniently rotated only by separating the plugging piece 200 from the cover body 110 and opening the adjusting opening 111, the whole water cooling system 300 does not need to be disassembled, and the working hours are saved.

The plugging member 200 may be in the form of a plugging cover or a plugging form, and only needs to be able to plug the adjustment opening 111 to prevent foreign matters such as external dust from entering the crankcase 400 through the adjustment opening 111 to affect the operation of the crankshaft 500, and simultaneously, be able to separate from the cover body 110 to facilitate the rotation of the crankshaft 500 from the adjustment opening 111. The cap body 110 may have a plate-shaped housing structure.

The adjusting opening 111 is arranged corresponding to the crankshaft 500, the central axis of the adjusting opening 111 may coincide or approximately coincide with the central axis of the crankshaft 500, and it is only necessary to adjust the crankshaft 500 through the adjusting opening 111 so as to rotate the crankshaft 500.

The detachable connection between the plugging member 200 and the cap body 110 means that the plugging member 200 can plug the adjustment opening 111, and the plugging member 200 can also open the adjustment opening 111. The detachable connection mode can be a clamping mode, an inserting mode and a thread matching mode, and only the requirement that the plugging piece 200 can plug the adjusting opening 111 is met, and the plugging piece 200 and the cover body 110 can be separated conveniently. Of course, in other embodiments, in order to avoid the loss of the block piece 200 after the block piece 200 is separated from the cap body 110, the cap body 110 and the block piece 200 may be connected by using a connecting element such as a pulling rope, even if the block piece 200 is pulled out from the adjusting opening 111 to open the adjusting opening 111, the cap body 110 and the block piece 200 may be connected by using a connecting element such as a pulling rope, so as to avoid the loss of the block piece 200.

In addition, in order to accurately adjust the piston to the top dead center position, a corresponding mark portion such as a mark point or a mark line may be provided at a position of the cover body 110 near the adjustment opening 111, a corresponding mark portion such as a notch or a mark line may be provided on the crankshaft 500, and when the mark portion on the crankshaft 500 is aligned with the mark portion on the cover body 110 during the rotation of the crankshaft 500, the adjustment of the piston to the top dead center position may be indicated. Meanwhile, corresponding identification parts can be synchronously arranged on the cylinder head and the camshaft, and when the identification parts on the camshaft are aligned with the identification parts on the cylinder head, the piston is adjusted to the top dead center position.

As shown in fig. 6 and 7, optionally, the cap body 110 is provided with an interference portion 112 for interference-engaging with the blocking piece 200, so that the blocking piece 200 has a tendency to move toward the cap body 110. So, when shutoff piece 200 is connected with lid body 110 and when shutoff to regulation mouth 111, conflict portion 112 on the lid body 110 is contradicted the cooperation with shutoff piece 200 to the feasible trend that has shutoff piece 200 and move towards being close to lid body 110 direction, and then make more inseparabler that shutoff piece 200 and lid body 110 combine, thereby make shutoff piece 200 can be better carry out the shutoff to regulation mouth 111, improved sealing performance.

The interference portion 112 may press the blocking member 200 by abutting, so that the blocking member 200 has a tendency to move toward the direction close to the cap body 110, for example, when the interference portion 112 is in the form of an abutting piece or an abutting strip, applying an abutting force to the blocking member 200, so as to press the blocking member 200 on the cap body 110. The interference portion 112 may also jack the block piece 200 in a jacking manner such that the block piece 200 has a tendency to move towards the direction close to the cap body 110, for example when the interference portion 112 is in the form of a protrusion or boss 113, applying an interference force to the block piece 200 such that the block piece 200 deforms to abut against the block piece 200.

In addition, the interference part 112 may be integrally formed with the cap body 110, or may be separately formed and assembled or assembled by screwing, welding, or the like.

As shown in fig. 5 and 6, optionally, the outer surface 114 of the cover body 110 is provided with a boss 113 disposed around the adjustment opening 111. The blocking piece 200 comprises a closed end 210 located outside the adjustment opening 111, and the closed end 210 is provided with a slot 211 in plug-fit with the boss 113. In this way, when the closing member 200 closes the adjustment opening 111, the boss 113 is inserted into the insertion groove 211 of the closed end 210, so that the closed end 210 is assembled and connected to the cap body 110, and the closed end 210 is placed on the adjustment opening 111 to close the adjustment opening 111. In addition, the boss 113 is inserted into the slot 211, so that the outer side 2121 wall of the boss 113 is attached to the inner side wall of the slot 211, the contact area between the cover body 110 and the plugging piece 200 is increased, the adjusting opening 111 can be effectively plugged, and the sealing performance is improved.

The closed end 210 may be a sheet or a disc, and the diameter of the closed end 210 may be larger than that of the adjustment opening 111, so as to effectively shield the adjustment opening 111.

The boss 113 preferably surrounds the adjusting opening 111 in a circumferential direction and is closed, so as to avoid a gap between the closed end 210 and the boss 113. The boss 113 is preferably integrally formed with the cap body 110, saving production costs.

As shown in fig. 6, further, closed end 210 includes a first resilient flange 212. The side of the boss 113 away from the adjusting opening 111 is provided with an interference part 112. The interference portion 112 is in interference fit with the inner sidewall of the slot 211, so that the first elastic flange 212 deforms toward the direction away from the boss 113 and tends to contract toward the direction close to the boss 113. Thus, after the boss 113 is inserted into the slot 211, the inner sidewall of the slot 211 is abutted by the abutting portion 112, so as to jack up the outer side 2121 of the first elastic flange 212, the outer side 2121 of the first elastic flange 212 deforms toward the direction away from the boss 113, and further the middle portion 2122 of the first elastic flange 212 is pressed to make the middle portion 2122 of the first elastic flange 212 have a tendency of contracting toward the direction close to the boss 113, so that the middle portion 2122 of the first elastic flange 212 abuts against the cover body 110 to better block the adjustment opening 111. In addition, after the abutting portion 112 abuts against the inner sidewall of the slot 211, the outer side 2121 of the first elastic flange 212 is deformed to slightly tilt up relative to the cap body 110, so as to facilitate gripping and applying force to separate the blocking piece 200 from the cap body 110.

The interference portion 112 is disposed on the top surface of the boss 113 and located on the outer side 2121 of the boss 113, and may be in a protruding form.

The first elastic flange 212 may be made of rubber or silicone, and the first elastic flange 212 may deform when being stressed.

Note that, outer side 2121 of first elastic flange 212 refers to an edge portion of first elastic flange 212; the middle portion 2122 of the first resilient flange 212 is the middle area surrounded by the outer rim portion. Likewise, outboard side 2121 of boss 113 refers to the edge portion of boss 113.

As shown in fig. 5 and 6, the plugging member 200 further includes a plug end 220 for mating with the adjustment opening 111, and an outer side 2121 wall of the plug end 220 is provided with a clamping portion 221 for clamping with the inner surface 115 of the cover body 110. Thus, after the inserting end 220 passes through the adjusting opening 111, the clamping portion 221 is clamped and matched with the inner surface 115 of the cover body 110, so that the assembling connection between the plugging piece 200 and the cover body 110 is stably and reliably realized, and the cover body 110 and the plugging piece 200 are prevented from falling off. Certainly, when the blocking piece 200 needs to be separated from the cap body 110, the plugging end 220 can be pulled out from the adjusting opening 111 by only applying an acting force to separate the clamping portion 221 from the inner surface 115 of the cap body 110, which is simple and convenient. The locking portion 221 may be in the form of a hook or a tooth.

The inserting end 220 may be cylindrical or barrel-shaped, and the inserting end 220 may be assembled with the adjusting opening 111 in an interference fit manner. The insertion end 220 is preferably integrally formed with the closed end 210 to save production costs. The inserting end 220 may also be made of elastic material such as rubber or silica gel, so that the outer side 2121 wall of the inserting end 220 is more tightly attached to the inner side wall of the adjusting opening 111.

In addition, the insertion fit of the protrusion and the insertion slot 211, in combination with the snap fit of the snap portion 221 and the inner surface 115 of the cap body 110, makes the assembling connection between the plugging member 200 and the cap body 110 more stable.

The outer surface 114 of the cap body 110 refers to a surface of the cap body 110 away from the crankshaft 500; the inner surface 115 of the cap body 110 refers to a surface of the cap body 110 near the crankshaft 500.

As shown in fig. 7, the regulation port 111 optionally has a first hole 1111 and a second hole 1112 communicating with each other, and the diameter of the first hole 1111 is larger than that of the second hole 1112. Therefore, the adjusting opening 111 is in a stepped hole form, the contact area between the cover body 110 and the plugging piece 200 is increased, and the sealing performance is improved. The inner sidewall of the second hole 1112 is provided with an internal thread, the plugging member 200 includes a cover 230 matching with the first hole 1111 and a connecting body 240 matching with the second hole 1112, and in addition, the outer side 2121 wall of the connecting body 240 is provided with an external thread screwed with the internal thread. Thus, the connecting body 240 passes through the first hole 1111 and then extends into the second hole 1112, and the external thread of the connecting body 240 is matched with the internal thread of the second hole 1112, so that the connecting body 240 is screwed into the second hole 1112, and the cover body 230 is filled in the first hole 1111, thereby plugging the whole adjusting opening 111.

It should be noted that, the cover 230 is matched with the first hole 1111, which means that the cover 230 is matched with the first hole 1111 in contour size or shape size, so that the cover 230 can fill the first hole 1111, and the appearance quality of the clutch cover 100 is improved. The cover 230 may have a disk shape or a sheet shape. The connecting body 240 may be cylindrical or tube-shaped.

As shown in fig. 7, further, the bottom wall of the first hole 1111 is provided with a mounting groove 1113, and the clutch cover 100 further includes a sealing member 600, wherein the sealing member 600 is disposed in the mounting groove 1113, and the sealing member 600 is in sealing engagement with the cover 230. In this way, the cover 230 is filled in the first hole 1111 and then is in sealing engagement with the sealing member 600, thereby improving the sealing performance. The combination of the threads of the internal thread and the external thread enables the cover 230 to be pressed tightly with the sealing member 600. The sealing member 600 may be in the form of a sealing ring or a gasket.

As shown in fig. 7, further, the cover 230 includes a second elastic flange 231, and the sealing member 600 is disposed adjacent to the connection body 240. Also, the sealing member 600 protrudes the mounting groove 1113 by a predetermined height to form the interference part 112, so that the second elastic flange 231 is deformed toward the protruding first hole 1111 and has a tendency to be contracted toward the bottom wall adjacent to the first hole 1111. So, after the external screw thread of connector 240 and the internal thread screw-thread fit of second hole 1112, second elasticity flange 231 is filled in first hole 1111, contradict second elasticity flange 231 through conflict portion 112, thereby jack-up second elasticity flange 231 and the position that conflict portion 112 corresponds (correspond the part for short), the corresponding position of second elasticity flange 231 takes place to warp towards protruding first hole 1111 direction, and then the both sides of extrusion corresponding part and make both sides have the trend of the diapire direction shrink that is close to first hole 1111, thereby make the both sides paste the diapire of tight first hole 1111 and better carry out the shutoff to regulation mouth 111.

In one embodiment, a water-cooled motorcycle is further provided, which comprises the power assembly of any one of the above embodiments.

In the water-cooled motorcycle of the embodiment, when maintenance tasks such as valve clearance adjustment are required and the crankshaft 500 needs to be rotated so that the piston of the engine is at the top dead center position, the crankshaft 500 can be simply and conveniently rotated only by separating the plugging piece 200 from the cover body 110 and opening the adjusting opening 111, and the whole water cooling system 300 does not need to be disassembled, so that the working hours are saved.

The "certain body" and the "certain portion" may be a part corresponding to the "member", that is, the "certain body" and the "certain portion" may be integrally formed with the other part of the "member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.

It should be noted that, the components included in the "unit", "assembly", "mechanism" and "device" of the present application can also be flexibly combined, i.e., can be produced in a modularized manner according to actual needs, so as to facilitate the modularized assembly. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It should also be understood that in explaining the connection relationship or the positional relationship of the elements, although not explicitly described, the connection relationship and the positional relationship are interpreted to include an error range which should be within an acceptable deviation range of a specific value determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.