Electric bicycle shock absorber

Abstract

The invention discloses an electric bicycle shock absorber, belonging to the technical field of shock absorbers; the shock absorber comprises: a bobbin, wherein a support rod is coaxially slidably connected inside the bobbin; an upper support, fixed to the upper end of the support rod, a lower support is fixed to the lower end of the bobbin, the support rod is connected to the frame via the upper support, and the bobbin is connected to the axle via the lower support; a main shock-absorbing spring, sleeved on the bobbin, the upper end of the main shock-absorbing spring abuts against the upper support; an adjustment unit, detachably mounted on the outside of the bobbin near the lower support, an axial pressure plate is slidably connected to the bobbin, the lower end of the main shock-absorbing spring is connected to the axial pressure plate, the adjustment unit contacts and abuts against the bottom of the axial pressure plate; an internal spring control component, coaxially arranged in the bobbin; the invention can conveniently adjust the settings of the shock absorber according to changes in the riding environment, thereby improving riding comfort.

Description

Technical Field

[0001] The invention belongs to the technical field of shock absorbers, in particular to a shock absorber for an electric bicycle. Background Art

[0002] The main function of electric bicycle shock absorbers is to absorb the energy generated by road bumps and improve riding comfort. Common electric bicycle shock absorbers are mainly spring shock absorbers, which have a simple structure and low cost. Most traditional shock absorbers cannot adjust the spring preload, and the shock absorption effect is average. A few adjustable shock absorbers need to be adjusted with the help of wrenches, screwdrivers and other tools, and the process is relatively cumbersome. In addition, a single spring shock absorber cannot provide a more flexible and effective shock absorption effect, especially in special environments or sections (such as bumpy mountain roads). It is difficult to perfectly adapt to vibrations of different frequencies and amplitudes. Especially in continuous or large bumps, there may be too fast rebound or insufficient shock absorption, and the stability and comfort of riding cannot be maintained. At the same time, it cannot be personalized according to the rider's weight, riding style or specific needs, which limits its wide applicability.

[0003] Therefore, it is necessary to provide an electric bicycle shock absorber to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: an electric bicycle shock absorber, comprising:

[0005] A bobbin, inside which a support rod is coaxially slidably connected;

[0006] An upper support is fixed to the upper end of the support rod, a lower support is fixed to the lower end of the bobbin, the support rod is connected to the frame through the upper support, and the bobbin is connected to the axle through the lower support;

[0007] A main damping spring, sleeved on the bobbin, the upper end of the main damping spring abutting against the upper support;

[0008] The adjusting unit is detachably mounted on a side of the outer tube close to the lower support, the tube is slidably connected with an axle pressure plate, the lower end of the main shock absorber spring is connected to the axle pressure plate, the adjusting unit contacts and abuts against the lower side of the axle pressure plate, and the adjusting unit controls the compression of the main shock absorber spring according to the use environment of the electric bicycle, so that the main shock absorber spring can achieve a suitable rebound effect under the adjustment of the preload force;

[0009] An inner elastic control component is coaxially arranged in the barrel, the inner elastic control component is slidably connected to the barrel, and the inner elastic control component is used to provide secondary shock absorption for the upper support on the support rod;

[0010] The control system is arranged outside the bobbin and is electrically connected to the inner elastic control component. The control system obtains the sliding damping frequency of the support rod on a rugged road section in combination with the load information, and autonomously adjusts the spring pressure strength of the inner elastic control component based on the sliding damping frequency of the support rod, so that the upper support of the support rod changes the vibration frequency after contacting the inner elastic control component, so as to absorb more vibration energy.

[0011] Further, preferably, the adjustment unit comprises:

[0012] The clamping ring portion is configured as an arc-shaped opening structure, and horizontally arranged threaded holes are symmetrically opened on both sides of the clamping ring portion;

[0013] An outer liner ring is assembled in contact with the clamping ring portion, a locking bolt corresponding to the threaded hole is rotatably connected to the outer liner ring, and one end of the locking bolt is threadedly matched with the threaded hole;

[0014] A push ring is slidably sleeved on the bobbin and is located below the shaft pressure plate;

[0015] A mounting groove is provided on the side wall of the contact surface between the bobbin and the clamping ring portion, and a top block is horizontally slidably arranged in the mounting groove;

[0016] A positioning hole is obliquely opened on a side of the clamping ring portion away from the mounting groove, a column rod is slidably connected in the positioning hole, a connecting clip is fixed at one end of the column rod, and the cross section of the connecting clip is set to a U-shaped structure, and an axle nail is fixed on the side wall of the top block, and the axle nail is slidably set in the U-shaped groove of the connecting clip;

[0017] A rotating part, rotatably connected to the outside of the clamping ring part, and the other end of the column rod is hinged to the rotating part;

[0018] The wrench frame is connected and assembled on the rotating part.

[0019] Further, as a preference, the upper surface of the top block abuts against the bottom of the push ring, and its contact surface is set to an inclined structure, so that when the wrench frame is pulled to the side away from the barrel, the push ring contacts and slides with the top block and moves downward along the barrel, and the main shock-absorbing spring is gradually released;

[0020] A ratchet lock is provided at the connection between the rotating part and the clamping ring part.

[0021] Further, preferably, the wrench holder is configured as a two-section foldable structure.

[0022] Furthermore, preferably, a displacement sensor is provided in the support rod, and a receiver is provided in the bobbin for receiving the displacement electrical signal of the support rod, and the control system continuously collects data in the receiver and analyzes and processes the data.

[0023] Further, preferably, the inner elastic control component comprises:

[0024] A reinforcing column is slidably connected in the tube, a guide groove is provided in the center of the tube, and one end of the support rod passes through the reinforcing column and is slidably connected in the guide groove;

[0025] An installation bin is arranged at the middle position of the bobbin, a liner ring is slidably connected in the installation bin, and the lower end of the reinforcing column is connected to the liner ring;

[0026] The sealing chamber is circumferentially distributed in the barrel and is located below the installation bin. There are three sealing chambers, and piston rods are slidably connected to the three sealing chambers.

[0027] Inner springs are arranged one by one corresponding to the sealing chambers, the upper ends of the inner springs are against the liner rings, and the lower ends of the inner springs are connected to the piston rods respectively;

[0028] A plurality of liquid channels are circumferentially distributed and opened in the barrel, and one end of the liquid channel is correspondingly connected to the sealing cavity;

[0029] A liquid pump is installed on one side of the barrel, and an extension rib is arranged at the lower end of the barrel to tilt outwards, and a plurality of channels are arranged in the extension rib, and each of the channels is connected to the other end of the liquid channel;

[0030] The electromagnetic diverter valve is installed on the extension rib and is used to independently connect the pump to each of the channels.

[0031] Furthermore, as a preference, the elastic strengths of the inner springs are different, and the three inner springs can present a uniform elastic force at different compression levels;

[0032] The pump delivers hydraulic oil to each sealed cavity through the electromagnetic diverter valve so as to adjust the initial compression state of each inner spring through the piston rod.

[0033] Furthermore, as a preference, in a rough road section, the pump can select one of the sealed chambers to pulse pump the fluid therein, so that the corresponding inner spring can provide a suitable rebound effect in the shock absorption of the inner spring control component.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention is based on a spring shock absorber and mainly provides the rider with a relatively simple spring preload adjustment by setting a lever adjustment unit, so that the shock absorber setting can be conveniently adjusted according to changes in the riding environment to improve the riding comfort; at the same time, the internal spring control component can provide a secondary shock absorption effect in different response periods for riding based on the working shock absorption of the main shock absorber spring, that is, it can intervene in the work under different compression degrees of the main shock absorber spring, so as to change and optimize the vibration frequency for rugged roads, so as to absorb more vibration energy, thereby achieving more precise vibration absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the adjustment unit in the present invention;

[0039] Figure 4 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0040] Figure 5 The structure of the inner elastic control component in the present invention is shown in FIG. Figure 1 ;

[0041] Figure 6 The structure of the inner elastic control component in the present invention is shown in FIG. Figure 2 ;

[0042] In the figure: 1. bobbin; 11. support rod; 12. upper support; 13. lower support; 14. main shock absorber spring; 15. shaft pressure plate; 16. guide groove; 2. adjustment unit; 21. clamping ring; 22. outer lining ring; 23. threaded hole; 24. locking bolt; 25. push ring; 26. mounting groove; 27. top block; 28. rotating part; 29. ​​wrench rack; 3. inner spring control assembly; 31. reinforcement column; 32. mounting bin; 33. lining ring; 34. sealing chamber; 35. piston rod; 36. inner spring; 37. liquid channel; 38. pump; 39. extension rib; 310. electromagnetic diverter valve; 4. positioning hole; 41. column rod; 42. connecting clip. DETAILED DESCRIPTION

[0043] See also Figure 1-Figure 6 In an embodiment of the present invention, an electric bicycle shock absorber comprises:

[0044] The bobbin 1 has a support rod 11 coaxially slidably connected therein;

[0045] An upper support 12 is fixed to the upper end of the support rod 11, a lower support 13 is fixed to the lower end of the bobbin 1, the support rod 11 is connected to the frame (body) through the upper support 12, and the bobbin 1 is connected to the axle through the lower support 13;

[0046] A main damping spring 14 is sleeved on the bobbin 1, and the upper end of the main damping spring 14 abuts against the upper support 12;

[0047] The adjusting unit 2 is detachably mounted on the side of the outer side of the barrel 1 near the lower support 13. The barrel 1 is slidably connected with an axial pressure plate 15. The lower end of the main shock absorber spring 14 is connected to the axial pressure plate 15. The adjusting unit 2 contacts and abuts against the lower side of the axial pressure plate 15. The adjusting unit 2 controls the compression of the main shock absorber spring 14 according to the use environment of the electric bicycle, so that the main shock absorber spring 14 can achieve a suitable rebound effect under the adjustment of the preload force; that is, by pre-setting the compression amount of the main shock absorber spring 14 before riding, it is ensured that the spring is maintained in an ideal state that can provide sufficient support force and rebound quickly, thereby improving the riding comfort and enhancing the adaptability to various complex road conditions;

[0048] The inner spring control component 3 is coaxially arranged in the barrel 1, and the inner spring control component 3 is slidably connected to the barrel 1. The inner spring control component 3 is used to provide secondary shock absorption for the upper support 12 on the support rod 11; that is, the inner spring control component can intervene in the compression process of the main shock absorption spring 14, thereby providing additional shock absorption effect, realizing the so-called "secondary shock absorption";

[0049] The control system is arranged outside the bobbin 1 and is electrically connected to the inner elastic control component 3. The control system obtains the sliding damping frequency of the support rod 11 on a rugged road section in combination with the load information, and autonomously adjusts the spring pressure strength of the inner elastic control component 3 based on the sliding damping frequency of the support rod 11, so that the upper support 12 of the support rod 11 changes and optimizes the vibration frequency after contacting the inner elastic control component 3, so as to absorb more vibration energy, which can more efficiently absorb vibration energy and greatly improve riding stability.

[0050] In this embodiment, the adjustment unit 2 includes:

[0051] The clamping ring portion 21 is configured as an arc-shaped opening structure, and horizontally arranged threaded holes 23 are symmetrically opened on both sides of the clamping ring portion 21;

[0052] The outer liner ring 22 is assembled in contact with the clamping ring portion 21, and a locking bolt 24 corresponding to the threaded hole 23 is rotatably connected to the outer liner ring 22, and one end of the locking bolt 24 is threadedly matched with the threaded hole 23; thereby, the clamping ring portion 21 and the outer liner ring 22 are tightly clamped and fixed outside the bobbin 1;

[0053] A push ring 25 is slidably mounted on the bobbin 1 and is located below the shaft pressure plate 15;

[0054] The mounting groove 26 is provided on the side wall of the contact surface between the bobbin 1 and the clamping ring portion 21, and a top block 27 is horizontally slidably arranged in the mounting groove 26;

[0055] The positioning hole 4 is obliquely opened on the side of the clamping ring portion 21 away from the mounting groove 26, and a column 41 is slidably connected in the positioning hole 4. A connecting clip 42 is fixed at one end of the column 41, and the cross section of the connecting clip 42 is set to a U-shaped structure. An axle nail is fixed on the side wall of the top block 27, and the axle nail is slidably set in the U-shaped groove of the connecting clip 42;

[0056] A rotating portion 28 is rotatably connected to the outside of the clamping ring portion 21, and the other end of the column rod 41 is hinged to the rotating portion 28;

[0057] The wrench frame 29 is connected and assembled on the rotating part 28 .

[0058] As a preferred embodiment, the upper surface of the top block 27 abuts against the bottom of the push ring 25, and its contact surface is set to an inclined structure, so that when the wrench frame 29 is pulled to the side away from the bobbin 1, the push ring 25 contacts and slides with the top block 27 and moves downward along the bobbin 1, and the main shock-absorbing spring 14 is gradually released; wherein the top block 27 can provide a vertical upward thrust to the push ring 25 during horizontal sliding, and because the slope of the contact inclined surface between the top block 27 and the push ring 25 is less than 30°, the push ring 25 will not be compressed downward by the main shock-absorbing spring 14 to produce a horizontal push on the top block 27 during normal use;

[0059] A ratchet lock is provided at the connection between the rotating portion 28 and the clamping ring portion 21, which has a certain anti-slip locking effect.

[0060] In this embodiment, the wrench frame 29 is configured as a two-section foldable structure to prevent the wrench frame 29 from being excessively extended outward due to being turned at too large an angle, thereby preventing safety hazards.

[0061] In this embodiment, a displacement sensor is provided in the support rod 11, and a receiver is provided in the bobbin 1 for receiving the displacement electrical signal of the support rod 11. The control system continuously collects data in the receiver and analyzes and processes the data. The data reflects the working state of the main shock absorber spring 14 under different road conditions, especially the frequency change of its compression. The spring compression frequency of the main shock absorber spring 14 on rugged roads can be obtained through the control system, so that the internal spring control component 3 can intervene in the work at an appropriate time period.

[0062] In this embodiment, the inner elastic control component 3 includes:

[0063] A reinforcing column 31 is slidably connected in the bobbin 1. A guide groove 16 is provided in the center of the bobbin 1. One end of the support rod 11 passes through the reinforcing column 31 and is slidably connected in the guide groove 16.

[0064] The installation bin 32 is arranged at the middle position of the bobbin 1, a liner ring 33 is slidably connected in the installation bin 32, and the lower end of the reinforcing column 31 is connected to the liner ring 33;

[0065] The sealing chamber 34 is circumferentially distributed in the barrel 1 and is located below the mounting bin 32. There are three sealing chambers 34, and piston rods 35 are slidably connected to the three sealing chambers 34.

[0066] The inner springs 36 are arranged one by one corresponding to the sealing chambers 34, the upper ends of the inner springs 36 are against the liner ring 33, and the lower ends of the inner springs 36 are connected to the piston rod 35 respectively; thus, the three inner springs 36 provide spring damping for the reinforcing column 31;

[0067] A plurality of liquid channels 37 are circumferentially distributed in the barrel 1, and one end of the liquid channel 37 is correspondingly connected to the sealing cavity 34;

[0068] The liquid pump 38 is installed on one side of the barrel 1. The lower end of the barrel 1 is inclined outwardly and provided with an extension rib 39. The extension rib 39 is provided with a plurality of channels (not shown in the figure). Each of the channels is connected to the other end of the liquid channel 37.

[0069] The electromagnetic diverter valve 310 is installed on the extension rib 39 and is used to independently connect the pump 38 to each of the channels.

[0070] As a preferred embodiment, the elastic strength of each inner spring 36 is different, and the three inner springs 36 can present a uniform elastic force under different compression degrees; that is, on the one hand, the three inner springs 36 can provide the same elastic shock-absorbing effect to the reinforcing column 31 during the shock-absorbing work, and on the other hand, the three inner springs 36 can perform the first, second, and third level shock-absorbing work in sequence, so the best shock-absorbing effect can be achieved by optimizing the layout, stiffness ratio, and cooperative working mode of the three inner springs 36; the time period for the intervention of the inner spring control component 3 is also adjusted by adjusting the installation position of each inner spring 36 through the piston rod, thereby changing the initial installation height of the reinforcing column 31;

[0071] The pump 38 delivers hydraulic oil to each sealed cavity 34 through the electromagnetic diverter valve 310 so as to adjust the initial compression state of each inner spring 36 through the piston rod 35.

[0072] In this embodiment, on a rough road section, the pump 38 can select one of the sealed chambers 34 to pulse pump liquid therein, so that the corresponding inner spring 36 can provide a suitable rebound effect in the shock absorption of the inner spring control component 3. Optimally, according to the road conditions, an inner spring 36 with a suitable stiffness can be selected to provide a vertical upward pulse push (the other two inner springs 36 are in normal operation, and the corresponding piston rods 35 are in a stationary state), thereby effectively changing the shock absorption frequency, improving the shock absorption effect, and adapting to complex road sections.

[0073] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric bicycle shock absorber, characterized in that: It includes: A bobbin (1) having a support rod (11) coaxially slidably connected therein; An upper support (12) is fixed to the upper end of the support rod (11); a lower support (13) is fixed to the lower end of the tube (1); the support rod (11) is connected to the vehicle frame via the upper support (12); and the tube (1) is connected to the vehicle axle via the lower support (13); A main damping spring (14) is sleeved on the bobbin (1), and the upper end of the main damping spring (14) abuts against the upper support (12); The adjusting unit (2) is detachably mounted on a side of the outer side of the barrel (1) close to the lower support (13); the barrel (1) is slidably connected with an axial pressure plate (15); the lower end of the main shock-absorbing spring (14) is connected to the axial pressure plate (15); the adjusting unit (2) contacts and abuts against the lower side of the axial pressure plate (15); the adjusting unit (2) controls the compression of the main shock-absorbing spring (14) according to the use environment of the electric bicycle, so that the main shock-absorbing spring (14) can achieve a suitable rebound effect under the adjustment of the preload force; An internal elastic control component (3) is coaxially arranged in the bobbin (1), the internal elastic control component (3) is slidably connected to the bobbin (1), and the internal elastic control component (3) is used to provide secondary shock absorption for the upper support (12) on the support rod (11); A control system is arranged outside the bobbin (1) and is electrically connected to the inner elastic control component (3). The control system obtains the sliding damping frequency of the support rod (11) on a rough road section in combination with the load information, and autonomously adjusts the spring pressure strength of the inner elastic control component (3) based on the sliding damping frequency of the support rod (11), so that the upper support (12) of the support rod (11) changes the vibration frequency after contacting the inner elastic control component (3), so as to absorb more vibration energy; The adjustment unit (2) comprises: A clamping ring portion (21) is arranged to have an arc-shaped opening structure, and horizontally arranged threaded holes (23) are symmetrically provided on both sides of the clamping ring portion (21); An outer liner ring (22) is assembled in contact with the clamping ring portion (21), and a locking bolt (24) corresponding to the threaded hole (23) is rotatably connected to the outer liner ring (22), and one end of the locking bolt (24) is threadedly matched with the threaded hole (23); A push ring (25) is slidably mounted on the bobbin (1) and is located below the shaft pressure plate (15); A mounting groove (26) is provided on the side wall of the contact surface between the bobbin (1) and the clamping ring portion (21), and a top block (27) is horizontally slidably arranged in the mounting groove (26); A positioning hole (4) is obliquely opened on a side of the clamping ring portion (21) away from the mounting groove (26); a column rod (41) is slidably connected in the positioning hole (4); a connecting clip (42) is fixed to one end of the column rod (41); the cross section of the connecting clip (42) is set to a U-shaped structure; an axle pin is fixed on the side wall of the top block (27); the axle pin is slidably set in the U-shaped groove of the connecting clip (42); A rotating portion (28) is rotatably connected to the outside of the clamping ring portion (21), and the other end of the column rod (41) is hinged to the rotating portion (28); The wrench frame (29) is connected and assembled on the rotating part (28).

2. The electric bicycle shock absorber according to claim 1, characterized in that: The upper surface of the top block (27) abuts against the lower side of the push ring (25), and its contact surface is arranged as an inclined structure, so that when the wrench frame (29) is moved toward the side away from the barrel (1), the push ring (25) contacts and slides with the top block (27) and moves downward along the barrel (1), and the main damping spring (14) is gradually released; A ratchet lock is provided at the connection between the rotating portion (28) and the clamping ring portion (21).

3. The shock absorber for an electric bicycle according to claim 1, characterized in that: The wrench frame (29) is configured as a two-section foldable structure.

4. The shock absorber for an electric bicycle according to claim 1, characterized in that: A displacement sensor is provided in the support rod (11), and a receiver is provided in the bobbin (1) for receiving a displacement electrical signal of the support rod (11). The control system continuously collects data in the receiver and analyses and processes the data.

5. The shock absorber for an electric bicycle according to claim 1, characterized in that: The inner elastic control component (3) comprises: A reinforcing column (31) is slidably connected in the bobbin (1); a guide groove (16) is provided at the center of the bobbin (1); one end of the support rod (11) passes through the reinforcing column (31) and is slidably connected in the guide groove (16); An installation bin (32) is arranged at a middle position of the bobbin (1), a liner ring (33) is slidably connected inside the installation bin (32), and the lower end of the reinforcing column (31) is connected to the liner ring (33); A sealed cavity (34) is circumferentially distributed in the barrel (1) and is located below the mounting bin (32); three sealed cavities (34) are provided, and a piston rod (35) is slidably connected to each of the three sealed cavities (34); Inner springs (36) are arranged one by one corresponding to the sealing chambers (34), the upper ends of the inner springs (36) are in contact with the liner ring (33), and the lower ends of the inner springs (36) are respectively connected to the piston rods (35); A plurality of liquid channels (37) are circumferentially distributed and opened in the barrel (1), one end of each of the liquid channels (37) being correspondingly connected to the sealing cavity (34); A liquid pump (38) is installed on one side of the barrel (1), and an extension rib (39) is provided at the lower end of the barrel (1) to be inclined outwards. A plurality of channels are provided in the extension rib (39), and each of the channels is connected to the other end of the liquid channel (37); The electromagnetic diverter valve (310) is mounted on the extension rib (39) and is used to independently connect the pump (38) to each of the channels.

6. The shock absorber for an electric bicycle according to claim 5, characterized in that: The elastic strength of each inner spring (36) is different, and the three inner springs (36) can have a uniform elastic strength under different compression degrees; The pump (38) delivers hydraulic oil to each sealed cavity (34) via an electromagnetic diverter valve (310) so as to adjust the initial compression state of each inner spring (36) via a piston rod (35).

7. The shock absorber for an electric bicycle according to claim 6, characterized in that: On a rough road section, the pump (38) selects one of the sealed chambers (34) to pulse pump liquid therein, so that the corresponding inner spring (36) provides a suitable rebound effect during the shock absorption operation of the inner spring control component (3).

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