Transmission driving structure of rear chain of dune buggy

Abstract

The utility model discloses a transmission driving structure of a rear chain of a dune buggy, which comprises a rear axle body connected with a frame, a driving motor fixedly connected onto the rear axle body and a transmission mechanism in transmission connection with an output end of the driving motor and driving a rear axle shaft to rotate. The rear axle body is fixedly connected with a protective cover covering the transmission mechanism, the protective cover comprises an inner cover and an outer cover, the inner cover is fixedly connected to the side face of the rear axle body, a lock hole is formed in the edge of the inner cover, and the edge of the outer cover is provided with a first turned edge extending towards the inner cover. The first flange is provided with an elastic clamping hook which can extend into the lock hole and is hooked at the lock hole, and when the outer cover covers the inner cover, the clamping hook extends into the lock hole and is matched with the lock hole to fix the outer cover on the inner cover. Compared with the prior art, the utility model has the advantages of simple and fast disassembly and assembly, and no need of using a plurality of bolts for fixation.

Description

Technical Field

[0001] The utility model relates to the technical field of beach vehicles, in particular to a transmission drive structure of a rear chain of a beach vehicle. Background Art

[0002] All-terrain vehicles, commonly known as beach buggies, are widely used because of their simplicity, practicality, good off-road performance, and ability to travel on any terrain, including terrain where ordinary vehicles are difficult to maneuver. Traditional beach buggies have exposed chain transmission parts, and because they often travel on rugged outdoor roads, dust, sand, and dirty water on the ground will inevitably contaminate the chain and sprocket. If they are not dried and maintained in time, they will rust and lose performance. In order to solve the above problems, beach buggies with protected transmission mechanisms have appeared on the market.

[0003] For example, the Chinese utility model patent "A beach car with a chain protection shell" with patent publication number CN217706093U includes a frame and a transmission mechanism, the transmission mechanism includes a driving motor, a driving sprocket, a rotating shaft, and a driven sprocket mounted on the rotating shaft, a chain is mounted between the driving sprocket and the driven sprocket, and a chain protection shell covering the driving sprocket and the driven sprocket is provided on one side of the frame, and a plurality of fixing parts are formed on one side of the upper shell and the lower shell of the protective shell, and the two are fixedly connected by bolts passing through the fixing parts of the upper shell and the lower shell.

[0004] In the above scheme, when the chain, driving sprocket and driven sprocket are to be disassembled and cleaned, each bolt needs to be unscrewed to separate the upper shell and the lower shell. However, when disassembling and installing, there are many bolts, which is troublesome, and the bolts are easy to lose during the disassembly process. Utility Model Content

[0005] The utility model aims to solve the problem that there are many bolts when disassembling and installing the protective shell of a beach vehicle, which is troublesome and the bolts are easy to be lost during the disassembly process. The technical problem to be solved by the utility model is to provide a transmission drive structure of a rear chain of a beach vehicle to solve the above problem.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: it includes a rear axle body connected to the frame, a driving motor fixedly connected to the rear axle body, and a transmission mechanism that is transmission-connected to the output end of the driving motor and drives the rear wheel axle to rotate; a protective cover that covers the transmission mechanism is fixedly connected to the rear axle body, and the protective cover includes an inner cover and an outer cover; the inner cover is fixedly connected to the side of the rear axle body, a locking hole is provided on the edge of the inner cover, the edge of the outer cover has a first flange extending toward the inner cover, the first flange has an elastic hook that can extend into the locking hole and hook at the locking hole, and when the outer cover is closed on the inner cover, the hook extends into the locking hole and cooperates with the locking hole to fix the outer cover on the inner cover.

[0007] A further preferred solution of the utility model is that the hooks and lock holes have at least two groups, which are respectively arranged on the upper side and the lower side of the protective cover.

[0008] A further preferred solution of the utility model is that the inner cover has a second flange extending toward the outer cover, and when the outer cover is closed on the inner cover, the inner wall of the first flange abuts against the outer wall of the second flange.

[0009] A further preferred solution of the utility model is: the rear end portion of the first flange has a connecting block extending inwardly, the connecting block has a first threaded hole, the end portion of the second flange has a second threaded hole corresponding to the first threaded hole, and the screws pass through the first threaded hole and the second threaded hole in sequence to fix the outer cover to the inner cover.

[0010] A further preferred scheme of the utility model is: the rear axle body includes a sleeve connected to the frame and a rear axle sleeve sleeved on the rear axle, two parallel vertical plates are connected to both ends of the sleeve and the rear axle sleeve, the vertical plate on the side close to the protective cover has a mounting portion, the mounting portion has a circular mounting hole matching the drive motor, a fixing plate is provided at one end of the drive motor, and a plurality of corresponding bolt holes are provided on the fixing plate and the mounting portion of the circular mounting hole, one side of the drive motor passes through the circular through hole of the mounting portion and is placed in the rear axle body, and the fixing plate is against the outside of the fixing portion of the drive motor, and the fixing plate is fixedly connected to the mounting portion by bolts.

[0011] A further preferred solution of the utility model is that the bolt holes on the fixing plate and the mounting portion are evenly distributed in a circular array with the output shaft of the driving motor as the center.

[0012] A further preferred solution of the utility model is that a cover plate for covering the top of the driving motor is fixedly connected to the top of the two vertical plates.

[0013] A further preferred scheme of the utility model is: the transmission mechanism includes a driving sprocket, a driven sprocket and a chain connecting the driving sprocket and the driven sprocket, the driving sprocket is fixedly connected to the output shaft of the driving motor, the driven sprocket is fixedly sleeved on the rear wheel shaft, the driving motor drives the driving sprocket to rotate, and drives the driven wheel to rotate through the chain transmission, and finally drives the rear wheel shaft to rotate.

[0014] A further preferred solution of the utility model is that: the protective cover is provided with a through hole for the rear wheel axle to pass through.

[0015] A further preferred solution of the utility model is that: the side of the protective cover close to the driving motor has a notch for the fixing plate to partially extend into, and the end of the outer cover close to the driving motor abuts against the fixing plate.

[0016] Compared with the prior art, the utility model has the following advantages: a lock hole is provided on the edge of the inner cover of the protective cover, the edge of the outer cover has a first flange extending toward the inner cover, the first flange has an elastic hook that can be inserted into the lock hole and hooked at the lock hole, when the outer cover is closed on the inner cover, the hook is inserted into the lock hole and cooperates with the lock hole to fix the outer cover on the inner cover, when removing the outer cover, it is only necessary to push the hook to slide out of the lock hole; when installing the outer cover on the inner cover, each hook is inserted into the lock hole to hook it, so that the outer cover can be fixed on the inner cover, and the disassembly and installation are simple and quick, and there is no need to use multiple bolts for fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the utility model;

[0019] Figure 2 It is a partial enlarged view of A of the preferred embodiment of the utility model;

[0020] Figure 3 This is an exploded view of a preferred embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the protective cover of the preferred embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the outer cover of the protective cover according to the preferred embodiment of the utility model.

[0023] In the figure: 1, rear axle body; 11, sleeve; 12, rear axle sleeve; 13, rear axle; 14, vertical plate; 15, mounting portion; 16, circular mounting hole; 17, cover plate; 2, drive motor; 21, fixing plate; 3, transmission mechanism; 31, driving sprocket; 32, driven sprocket; 33, chain; 4, protective cover; 41, inner cover; 411, lock hole; 412, second flange; 413, connecting block; 414, first threaded hole; 42, outer cover; 421, hook; 422, first flange; 43, through hole; 44, notch. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0025] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0026] This embodiment mainly describes the transmission drive structure of the beach vehicle rear chain, as follows:

[0027] like Figures 1 to 5 As shown, the transmission drive structure of the rear chain of the beach vehicle includes a rear axle body 1 connected to the frame, a driving motor 2 is fixedly connected to the rear axle body 1, and a transmission mechanism 3 is transmission-connected to the output end of the driving motor 2, and the transmission mechanism 3 is connected to the rear wheel shaft to drive the rear wheel shaft to rotate, and a protective cover 4 is fixedly connected to the rear axle body 1 to cover the transmission mechanism 3, and the protective cover 4 is used to prevent dust, sand and dirty water on the ground from splashing onto the transmission mechanism 3, and the protective cover 4 includes an inner cover 41 and an outer cover 42, and the inner cover 41 is fixedly connected to the side of the rear axle body 1, and the fixing connection method can be screwed or bolted, and can also be fixed by welding, and a lock hole 411 is provided on the edge of the inner cover 41, and the edge of the outer cover 42 has a There is a first flange 422 extending toward the inner cover 41, and the first flange 422 has an elastic hook 421 that can extend into the locking hole 411 and hook on the locking hole 411. When the outer cover 42 is closed on the inner cover 41, the hook 421 extends into the locking hole 411 and cooperates with the locking hole 411 to fix the outer cover 42 on the inner cover 41. When removing the outer cover 42, it is only necessary to push the hook 421 to make the hook 421 slide out of the locking hole 411; when installing the outer cover 42 on the inner cover 41, each hook 421 is inserted into and hooked on the locking hole 411 to fix the outer cover 42 on the inner cover 41. Disassembly and installation are simple and quick, and there is no need to use multiple bolts for fixing, and there is no need to worry about the problem of bolts being lost during disassembly.

[0028] Specifically, there are at least two groups of hooks 421 and lock holes 411, which are respectively arranged on the upper and lower sides of the protective cover 4. The more hooks 421 and lock holes 411 are arranged to fix the upper and lower sides of the protective cover 4, the more stable the structure is. However, it is more troublesome to disassemble when there are too many hooks 421 and lock holes 411. It is preferred that there are two groups of hooks 421 and lock holes 411.

[0029] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the inner cover 41 has a second flange 412 extending toward the outer cover 42. When the outer cover 42 is covered on the inner cover 41, the inner wall of the first flange 422 is in contact with the outer wall of the second flange 412. The second flange 412 has an escape opening, and the escape opening has a vertically extending connecting portion. The lock hole 411 is located on the connecting portion. In order to avoid a large gap when the outer cover 42 is covered on the inner cover 41, the flanges on both sides of the hook 421 of the outer cover 42 have slots 44 for the connecting portion to cooperate with. When the outer cover 42 is covered on the inner cover 41, the connecting portion abuts against the bottom wall and side walls of the slot 44.

[0030] like Figure 4 As shown, the rear end portion of the first flange 422 has a connecting block 413 extending inwardly, and the connecting block 413 has a first threaded hole 414, and the end portion of the second flange 412 has a second threaded hole (not shown in the figure) corresponding to the first threaded hole 414, and the screws pass through the first threaded hole 414 and the second threaded hole (not shown in the figure) in sequence to fix the outer cover 42 to the inner cover 41, further enhancing the stability of the inner cover 41 and the outer cover 42, and preventing the outer cover 42 from falling off during the use of the beach car.

[0031] Specifically, the rear axle body 1 includes a sleeve 11 connected to the frame and a rear axle sleeve 12 sleeved on the rear axle 13, two parallel vertical plates 14 are connected to the ends of the sleeve 11 and the rear axle sleeve 12, and the two vertical plates 14 are fixed to the ends of the sleeve 11 and the rear axle sleeve 12 by bolt and nut assemblies, or fixed to the ends of the sleeve 11 and the rear axle sleeve 12 by welding, and the vertical plate 14 on the side close to the protective cover 4 has a mounting portion 15, and the mounting portion 15 has a circular mounting hole 16 matching the drive motor 2, and one end of the drive motor 2 is provided with a fixing plate 21, and the fixing plate 2 1 and the circular mounting hole 16 are provided with a plurality of corresponding bolt holes (not shown in the figure), one side of the drive motor 2 passes through the circular through hole 43 of the mounting portion 15 and is placed in the rear axle body 1, and the fixing plate 21 is against the outer side of the fixing portion of the drive motor 2, and the fixing plate 21 is fixedly connected to the mounting portion 15 by bolts, and the output end of the drive motor 2 is on the same side as the protective cover 4. In order to improve the stability and overall aesthetics of the drive motor 2, the bolt holes (not shown in the figure) on the fixing plate 21 and the mounting portion 15 are evenly distributed in a circular array with the output shaft of the drive motor 2 as the center.

[0032] Specifically, the tops of the two vertical plates 14 are fixedly connected with a cover plate 17 covering the top of the drive motor 2, and the cover plate 17 and the two vertical plates 14 wrap the drive motor 2 inside. Preferably, the bottoms of the two vertical plates 14 can be fixedly connected with a bottom plate to protect the top, bottom, left and right sides of the drive motor 2. The bottom plate may also be omitted to form a heat dissipation channel to prevent the drive motor 2 from overheating during use and affecting the normal operation of the drive motor 2.

[0033] Specifically, the transmission mechanism 3 includes a driving sprocket 31, a driven sprocket 32 ​​and a chain 33 connecting the driving sprocket 31 and the driven sprocket 32. The driving sprocket 31 is fixedly connected to the output shaft of the driving motor 2, and the driven sprocket 32 ​​is fixedly sleeved on the rear wheel shaft. The driving motor 2 drives the driving sprocket 31 to rotate, and drives the driven wheel to rotate through the chain 33, and finally drives the rear wheel shaft to rotate. The driving motor 2 and the driving transmission mechanism 3 are arranged on the rear axle, which can reduce the distance between the driving gear and the driven gear, thereby reducing the risk of the chain 33 loosening and the chain 33 falling off, and improving the transmission efficiency.

[0034] Specifically, the protective cover 4 is provided with a through hole 43 for the rear wheel axle to pass through. The rear wheel axle passes through the through hole 43 and rotates in the through hole 43 driven by the driving motor 2 and the chain 33 sprocket.

[0035] Specifically, the protective cover 4 has a notch 44 on one side close to the driving motor 2 for partially inserting the fixing plate 21 , and the end of the outer cover 42 close to the driving motor 2 abuts against the fixing plate 21 to cover the driving sprocket 31 in the protective cover 4 .

[0036] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0037] The transmission drive structure of the rear chain of the beach vehicle provided by the utility model is introduced in detail above. In this article, specific examples are used to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and the core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. The transmission drive structure of the rear chain of the beach vehicle includes a rear axle body connected to the frame, a drive motor fixedly connected to the rear axle body, and a transmission mechanism connected to the output end of the drive motor and driving the rear wheel shaft to rotate, characterized in that: A protective cover covering the transmission mechanism is fixedly connected to the rear axle body, and the protective cover includes an inner cover and an outer cover. The inner cover is fixedly connected to the side of the rear axle body, and a locking hole is provided on the edge of the inner cover. The edge of the outer cover has a first flange extending toward the inner cover, and the first flange has an elastic hook that can extend into the locking hole and hook at the locking hole. When the outer cover is closed on the inner cover, the hook extends into the locking hole and cooperates with the locking hole to fix the outer cover on the inner cover.

2. The rear chain transmission drive structure of the beach vehicle according to claim 1, characterized in that: There are at least two groups of hooks and lock holes, which are respectively arranged on the upper side and the lower side of the protective cover.

3. The rear chain transmission drive structure of the beach vehicle according to claim 1, characterized in that: The inner cover has a second flange extending toward the outer cover. When the outer cover is closed on the inner cover, the inner wall of the first flange abuts against the outer wall of the second flange.

4. The rear chain transmission drive structure of the beach vehicle according to claim 3, characterized in that: The rear end of the first flange has a connecting block extending inwardly, and the connecting block has a first threaded hole. The end of the second flange has a second threaded hole corresponding to the first threaded hole. The screw passes through the first threaded hole and the second threaded hole in sequence to fix the outer cover to the inner cover.

5. The rear chain transmission drive structure of a beach vehicle according to claim 1, characterized in that: The rear axle body includes a sleeve connected to the frame and a rear axle sleeve sleeved on the rear axle, two parallel vertical plates are connected to the ends of the sleeve and the rear axle sleeve, the vertical plate on the side close to the protective cover has a mounting portion, the mounting portion has a circular mounting hole matching the drive motor, a fixing plate is provided at one end of the drive motor, and a plurality of corresponding bolt holes are provided on the fixing plate and the mounting portion of the circular mounting hole, one side of the drive motor passes through the circular through hole of the mounting portion and is placed in the rear axle body, and the fixing plate is against the outside of the fixing portion of the drive motor, and the fixing plate is fixedly connected to the mounting portion by bolts.

6. The rear chain transmission drive structure of a beach vehicle according to claim 5, characterized in that: The bolt holes on the fixing plate and the mounting portion are evenly distributed in a circular array with the output shaft of the driving motor as the center.

7. The rear chain transmission drive structure of a beach vehicle according to claim 5, characterized in that: The tops of the two vertical plates are fixedly connected with a cover plate for covering the top of the driving motor.

8. The rear chain transmission drive structure of a beach vehicle according to claim 1, characterized in that: The transmission mechanism includes a driving sprocket, a driven sprocket and a chain connecting the driving sprocket and the driven sprocket. The driving sprocket is fixedly connected to the output shaft of the driving motor, and the driven sprocket is fixedly sleeved on the rear wheel shaft. The driving motor drives the driving sprocket to rotate, which drives the driven wheel to rotate through the chain transmission, and finally drives the rear wheel shaft to rotate.

9. The rear chain transmission drive structure of a beach vehicle according to claim 1, characterized in that: The protective cover is provided with a through hole for the rear wheel axle to pass through.

10. The rear chain transmission drive structure of a beach vehicle according to claim 5, characterized in that: The side of the protective cover close to the driving motor is provided with a notch for the fixing plate to partially extend into, and the end of the outer cover close to the driving motor abuts against the fixing plate.

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