Quickly mounted and dismounted electric bicycle rear shock absorber

Abstract

The utility model provides a quick installation and disassembly's electric bicycle rear shock absorber belongs to electric bicycle shock absorbing technical field, including the machine box, the inside of machine box is provided with the shock absorber, the top of machine box is provided with the machine cover, the inside of machine box is provided with installation and disassembly device, installation and disassembly device includes the bottom plate, the bottom plate fixed connection is in the bottom of machine box, the top fixed connection of bottom plate has the supporting plate, the side surface rotationally coupled of supporting plate has the rotating shaft, the circumferential surface fixed connection of rotating shaft has the fixed block. The utility model discloses the installation and disassembly device is set up, and the eccentric cam clamping mode makes to the shock absorber is fixed, when the staff needs to disassemble the shock absorber, also through the screw handle, makes the connecting block into the inclined state, cancels the clamping force to the shock absorber at this moment, avoids the unstable drawback of the mode such as thread fixing.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle shock absorption technology, and more specifically, to a quick-install and quick-remove rear shock absorber for electric bicycles. Background Technology

[0002] Traditional electric bicycle rear shock absorbers mostly use bolt or threaded connections, requiring specialized tools for installation and disassembly, which is time-consuming and labor-intensive. Especially in high-frequency usage scenarios such as shared bicycles and logistics vehicles, existing structures suffer from low maintenance efficiency, easy thread stripping, and reduced preload due to repeated disassembly and assembly. Some improved solutions attempt to use snap-fit ​​connections, but these suffer from insufficient stability and easy loosening. The market urgently needs a shock absorber solution that balances quick assembly and disassembly efficiency with structural reliability.

[0003] A search revealed that Chinese patent CN 220974450 U discloses "a shock absorber installed at the rear shock absorber position of an electric bicycle," which includes a hydraulic damper, an external threaded sleeve, and a spring. The external threaded sleeve is fitted over the housing of the hydraulic damper, and a rotating disk is threaded onto the outer side of the external threaded sleeve. The spring is fitted over the outer side of the housing of the hydraulic damper and is limited between the rotating disk and the upper limit plate. The upper limit plate is fixedly fitted over the outer side of the telescopic rod on the hydraulic damper. By adjusting the distance between the rotating disk and the upper limit plate, the initial compression of the spring can be adjusted, thereby achieving different shock absorption stiffness. However, the following drawbacks still exist:

[0004] (1) Traditional electric bicycle rear shock absorbers are mostly fixed with bolts or threaded connections. Installation and disassembly require professional tools, which is time-consuming and labor-intensive.

[0005] (2) Some models use snap-fit ​​connections, but these have drawbacks such as insufficient stability and easy loosening, making it difficult to guarantee safety. Therefore, a quick-installation and disassembly electric bicycle rear shock absorber is proposed. Utility Model Content

[0006] The purpose of this utility model is to address the problem that traditional electric bicycle rear shock absorbers mostly use bolt fixing or threaded connection methods, which require professional tools for installation and disassembly, resulting in time and labor costs.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a quick-installation and disassembly rear shock absorber for electric bicycles, comprising a housing, wherein the shock absorber is disposed inside the housing, a cover is disposed on the top of the housing, and an installation and disassembly device is disposed inside the housing;

[0009] The installation and disassembly device includes a base plate, which is fixedly connected to the bottom of the housing. A support plate is fixedly connected to the top of the base plate. A rotating shaft is rotatably connected to the side of the support plate. A fixing block is fixedly connected to the circumferential surface of the rotating shaft. A connecting block is fixedly connected to the side of the fixing block. A rotating shaft is rotatably connected to the inner wall of the connecting block.

[0010] As a preferred technical solution of this utility model, a handle is fixedly connected to the circumferential surface of the rotating shaft, and a round pin is fixedly connected to the inner wall of the housing. The function of the round pin is to position the shock absorber, avoid affecting the subsequent fixing, and prevent the problem of unstable fixing.

[0011] As a preferred technical solution of this utility model, there are two support plates, which are symmetrical to each other along the vertical central axis of the shock absorber. The fixed block is L-shaped and the connecting block is concave. The function of the fixed block is to achieve the cam clamping effect by adjusting the position of the handle.

[0012] As a preferred technical solution of this utility model, the inner wall of the casing is provided with an anti-drop device. The anti-drop device includes a rectangular groove, which is formed in the inner wall of the casing. One end of a spring is fixedly connected to the inner wall of the rectangular groove. A rectangular block is fixedly connected to the end of the spring away from the rectangular groove. An action block is fixedly connected to the bottom of the casing. The function of the rectangular groove is to be located on the movement trajectory of the rectangular block, so that the rectangular block can slide on the inner wall of the rectangular groove.

[0013] As a preferred technical solution of this utility model, a sliding block is fixedly connected to the side of the rectangular block. The sliding block is L-shaped and fixedly connected to the bottom of the cover. The function of the sliding block is to connect the cover and the rectangular block, so that the sliding block can drive the cover when the rectangular block moves.

[0014] As a preferred technical solution of this utility model, there are two rectangular slots, which are symmetrical to each other along the vertical central axis of the machine box. The rectangular slots and rectangular blocks cooperate with each other. The rectangular blocks are slidably connected to the inner wall of the rectangular slots. The function of the rectangular blocks is to be able to slide on the inner wall of the rectangular slots, and to allow the spring to drive the rectangular blocks to automatically reset when the machine cover is opened.

[0015] As a preferred technical solution of this utility model, there are two springs, which are symmetrical to each other along the vertical central axis of the casing. The initial state of the springs is unstretched. The function of the springs is to seal the casing and prevent the shock absorbers from falling off, thereby improving work efficiency.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The shock absorber is fixed by using an eccentric cam clamping device for installation and disassembly. When the shock absorber needs to be disassembled, the connecting block is tilted by turning the handle. At this time, the clamping force of the shock absorber is released, avoiding the instability caused by threaded fixing and other methods. This also improves work efficiency and equipment utilization.

[0018] 2. With the anti-drop device in place, after the shock absorber is installed, the cover is loosened, causing the spring to lose its tension and the rectangular block and the action block to return to their original positions. This prevents the device inside the housing from falling off, thus avoiding the device falling off and affecting the quick installation process, and improving work efficiency. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a quick-installation and disassembly rear shock absorber for electric bicycles provided by this utility model;

[0020] Figure 2 A partial structural diagram of the base plate of a quick-install and disassemble electric bicycle rear shock absorber provided by this utility model;

[0021] Figure 3 This utility model provides a quick-installation and disassembly rear shock absorber for electric bicycles. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4 A three-dimensional cross-sectional view of the rectangular groove of a quick-installation and disassembly electric bicycle rear shock absorber provided by this utility model;

[0023] Figure 5 This utility model provides a quick-installation and disassembly rear shock absorber for electric bicycles. Figure 4 Enlarged schematic diagram of the three-dimensional structure at point B.

[0024] The diagram shows: 1. Chassis; 2. Shock absorber; 3. Cover; 4. Installation and disassembly device; 41. Base plate; 42. Support plate; 43. Rotating shaft; 44. Fixing block; 45. Connecting block; 46. Rotating shaft; 47. Handle; 48. Round pin; 5. Anti-fall-off device; 51. Rectangular groove; 52. Spring; 53. Rectangular block; 54. Actuating block; 55. Sliding block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment proposes a quick-install and removable electric bicycle rear shock absorber, including a housing 1, a shock absorber 2 disposed inside the housing 1, a cover 3 disposed on the top of the housing 1, and an installation and removal device 4 disposed inside the housing 1.

[0030] The installation and disassembly device 4 includes a base plate 41, which is fixedly connected to the bottom of the housing 1. A support plate 42 is fixedly connected to the top of the base plate 41. A rotating shaft 43 is rotatably connected to the side of the support plate 42. A fixing block 44 is fixedly connected to the circumferential surface of the rotating shaft 43. A connecting block 45 is fixedly connected to the side of the fixing block 44. A rotating shaft 46 is rotatably connected to the inner wall of the connecting block 45.

[0031] like Figure 2 As shown, in a preferred embodiment, based on the above method, a handle 47 is fixedly connected to the circumferential surface of the rotating shaft 46, and a round pin 48 is fixedly connected to the inner wall of the housing 1. The function of the round pin 48 is to position the shock absorber 2 to avoid affecting the subsequent fixing and to prevent the problem of unstable fixing.

[0032] like Figure 3 As shown, in a preferred embodiment, based on the above method, there are two support plates 42, which are symmetrical to each other along the vertical central axis of the shock absorber 2. The fixed block 44 is L-shaped, and the connecting block 45 is concave. The function of the fixed block 44 is to achieve the cam clamping effect by adjusting the position of the handle 47.

[0033] like Figure 4 , Figure 5As shown, in a preferred embodiment, based on the above method, the inner wall of the housing 1 is further provided with an anti-drop device 5. The anti-drop device 5 includes a rectangular groove 51, which is formed on the inner wall of the housing 1. One end of a spring 52 is fixedly connected to the inner wall of the rectangular groove 51. A rectangular block 53 is fixedly connected to the end of the spring 52 away from the rectangular groove 51. An action block 54 is fixedly connected to the bottom of the cover 3. The function of the rectangular groove 51 is to be located on the movement trajectory of the rectangular block 53, so that the rectangular block 53 can slide on the inner wall of the rectangular groove 51.

[0034] like Figure 4 As shown, in a preferred embodiment, based on the above method, a sliding block 55 is fixedly connected to the side of the rectangular block 53. The sliding block 55 is L-shaped and fixedly connected to the bottom of the cover 3. The function of the sliding block 55 is to connect the cover 3 and the rectangular block 53, so that the sliding block 55 drives the cover 3 under the movement of the rectangular block 53.

[0035] like Figure 5 As shown, in a preferred embodiment, based on the above method, there are two rectangular slots 51, which are symmetrical about each other along the vertical central axis of the housing 1. The rectangular slots 51 and rectangular blocks 53 cooperate with each other. The rectangular blocks 53 are slidably connected to the inner wall of the rectangular slots 51. The function of the rectangular blocks 53 is to be able to slide on the inner wall of the rectangular slots 51, and when the housing 3 is opened, the spring 52 can drive the rectangular blocks 53 to automatically reset.

[0036] like Figure 1 , Figure 2 , Figure 4 As shown, in a preferred embodiment, based on the above method, there are two springs 52, which are symmetrical about each other along the vertical central axis of the housing 1. The initial state of the springs 52 is unstretched. The function of the springs 52 is to seal the housing 1 and prevent the shock absorber 2 from falling off, thereby improving work efficiency.

[0037] Specifically, in use of this quick-installation and disassembly electric bicycle rear shock absorber: When the worker needs to fix the shock absorber 2, first insert the round pin 48 into the fixing hole on the side of the shock absorber 2. At this time, the worker needs to turn the handle 47. At this time, the more protruding end of the handle 47 contacts the connecting block 45, so that the connecting block 45 is in a parallel state. At this time, the fixing block 44 fixed on the side of the connecting block 45 is also in a parallel state. This allows the side of the fixing block 44 that contacts the shock absorber 2 to be in a parallel state. The shock absorber 2 is fixed by clamping it with an eccentric cam. When the worker needs to disassemble the shock absorber 2, the worker also turns the handle 47 to tilt the connecting block 45. At this time, the clamping force on the shock absorber 2 is released, avoiding the instability caused by threaded fixing and improving work efficiency and equipment utilization efficiency.

[0038] The operator manually moves the cover 3, causing the sliding block 55 fixed at the bottom of the cover 3 to be stressed. This causes the rectangular block 53 fixed on the side of the sliding block 55 to move away from the spring 52. At this time, the spring 52 is stretched and moves along the inner wall of the rectangular groove 51 with the rectangular block 53, changing its initial unstretched state. After the shock absorber 2 is installed, the cover 3 is released, causing the spring 52 to lose its stretching force, which causes the rectangular block 53 and the actuating block 54 to reset. This prevents the device inside the housing 1 from falling off, avoiding the device falling off and affecting the quick installation, thus improving work efficiency.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A quick-installation and removable rear shock absorber for electric bicycles, comprising a housing (1), characterized in that, The casing (1) is equipped with a shock absorber (2), the top of the casing (1) is equipped with a cover (3), and the casing (1) is equipped with an installation and disassembly device (4). The installation and disassembly device (4) includes a base plate (41), which is fixedly connected to the bottom of the housing (1). A support plate (42) is fixedly connected to the top of the base plate (41). A rotating shaft (43) is rotatably connected to the side of the support plate (42). A fixing block (44) is fixedly connected to the circumferential surface of the rotating shaft (43). A connecting block (45) is fixedly connected to the side of the fixing block (44). A rotating shaft (46) is rotatably connected to the inner wall of the connecting block (45).

2. The quick-installation and disassembly electric bicycle rear shock absorber according to claim 1, characterized in that, A handle (47) is fixedly connected to the circumferential surface of the rotating shaft (46), and a round pin (48) is fixedly connected to the inner wall of the housing (1).

3. The quick-installation and disassembly rear shock absorber for electric bicycles according to claim 1, characterized in that, There are two support plates (42), which are symmetrical to each other along the vertical central axis of the shock absorber (2). The fixed block (44) is L-shaped, and the connecting block (45) is concave.

4. A quick-installation and disassembly rear shock absorber for electric bicycles according to claim 1, characterized in that, The inner wall of the housing (1) is provided with an anti-drop device (5). The anti-drop device (5) includes a rectangular groove (51). The rectangular groove (51) is opened on the inner wall of the housing (1). One end of a spring (52) is fixedly connected to the inner wall of the rectangular groove (51). A rectangular block (53) is fixedly connected to the end of the spring (52) away from the rectangular groove (51). An action block (54) is fixedly connected to the bottom of the cover (3).

5. A quick-installation and disassembly rear shock absorber for electric bicycles according to claim 4, characterized in that, A sliding block (55) is fixedly connected to the side of the rectangular block (53). The sliding block (55) is L-shaped and is fixedly connected to the bottom of the cover (3).

6. A quick-installation and disassembly rear shock absorber for electric bicycles according to claim 4, characterized in that, There are two rectangular slots (51), which are symmetrical to each other along the vertical central axis of the housing (1). The rectangular slots (51) and rectangular blocks (53) cooperate with each other, and the rectangular blocks (53) are slidably connected to the inner wall of the rectangular slots (51).

7. A quick-installation and disassembly rear shock absorber for electric bicycles according to claim 4, characterized in that, There are two springs (52), which are symmetrical about each other along the vertical central axis of the housing (1). The initial state of the springs (52) is unstretched.

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