Rear fork damping device and scooter

Abstract

The utility model discloses a rear fork damping device and a scooter, the rear fork damping device comprises a rear fork, a frame and an elastic piece, the rear fork and the frame are pivotally connected between a first critical position and a second critical position, the elastic piece comprises a telescopic spring or a plate spring, and the elastic piece is clamped between the rear fork and the frame. The elastic member presses the rear fork toward the first critical position. The rear fork damping device has the advantages of being simple in damping structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of scooters, in particular to a rear fork shock absorbing device and a scooter. Background Art

[0002] The rear fork shock-absorbing structure of a scooter in the related art is usually an integrated telescopic spring shock absorber with a multi-link structure, or a highly integrated shock-absorbing structure such as a torsion bar or torsion rubber. This structure is widely used and has a high structural maturity, but it has the defects of many parts, complex structure, high cost and large space occupation. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a rear fork shock absorbing device, which has the advantages of simple shock absorbing structure and low cost.

[0005] The embodiment of the utility model further provides a walking vehicle.

[0006] The rear fork shock absorbing device of the embodiment of the utility model comprises a rear fork, a frame and an elastic member, wherein the rear fork and the frame are pivotally connected between a first critical position and a second critical position; the elastic member comprises a telescopic spring or a leaf spring, and the elastic member is clamped between the rear fork and the frame, and the elastic member presses the rear fork toward the first critical position.

[0007] According to the rear fork shock absorbing device of the embodiment of the utility model, the rear fork can pivot between the first critical position and the second critical position relative to the frame, wherein when downward pressure is applied to the frame, the rear fork can rotate relative to the frame from the first critical position to the second critical position, and during the rotation process, the elastic member always gives the rear fork a rebound force to reset to the first critical position, and under the action of the rebound force of the elastic member, the rotation speed of the rear fork relative to the frame can be effectively buffered, thereby making the downward pressure and lifting of the rear end of the frame more stable, and the shock absorption effect of the scooter is better. Moreover, the above shock absorption effect can be achieved by only clamping the telescopic spring or leaf spring between the rear fork and the frame bracket, without the need to set up additional parts such as connecting rods, and the structure is simple, and the manufacturing cost is lower.

[0008] In some embodiments, one of the rear fork and the frame is provided with a first limit surface and a second limit surface opposite to each other along the pivot direction of the rear fork, and the other of the rear fork and the frame is connected with a pressure rod, and the pressure rod is located between the first limit surface and the second limit surface, and when the rear fork is located at the first critical position, the pressure rod abuts against the first limit surface, and when the rear fork is located at the second critical position, the pressure rod abuts against the second limit surface.

[0009] In some embodiments, the pressure rod is connected to the rear fork, the elastic member includes the telescopic spring, and along the pivoting direction of the rear fork, the telescopic spring is clamped between the frame and the pressure rod.

[0010] In some embodiments, the rear fork shock absorber device also includes a guide bin, which is connected to the frame. The guide bin is provided with a guide hole opening toward the pressure rod. The extension direction of the guide hole is consistent with the axial direction of the telescopic spring, and one end of the telescopic spring away from the pressure rod is engaged in the guide hole.

[0011] In some embodiments, the rear fork shock absorber device also includes a spring seat and a guide column, the spring seat is connected to the frame, the telescopic spring is clamped between the spring seat and the pressure rod, the guide column is connected to the side of the spring seat facing the pressure rod, the axial direction of the guide column is consistent with the axial direction of the telescopic spring, and one end of the telescopic spring adjacent to the spring seat is sleeved on the guide column.

[0012] In some embodiments, there are at least two telescopic springs, and all of the telescopic springs are arranged at intervals along the width direction of the frame.

[0013] In some embodiments, a limiting hole is provided on the frame, the inner wall surface of the limiting hole forms the first limiting surface and the second limiting surface, and the pressure rod is connected to the rear fork and is clearance-fitted in the limiting hole.

[0014] In some embodiments, the rear fork shock absorbing device further comprises a first bushing, the hardness of the first bushing is lower than the hardness of each of the frame and the rear fork, the first bushing is connected to the frame via a threaded member, at least a portion of the first bushing is interference fit in the limiting hole, and the pressure rod is clearance fit in the first bushing;

[0015] And / or, the rear fork shock absorbing device further comprises a second bushing, the hardness of the second bushing is lower than the hardness of each of the frame and the rear fork, the second bushing is sleeved on the pressure rod, and the second bushing is loosely fitted in the limiting hole.

[0016] In some embodiments, the rear fork includes a left fork plate, a mudguard and a right fork plate connected in sequence, the pressure rod is located on the side of the mudguard facing the frame, and the pressure rod is connected to each of the left fork plate and the right fork plate through a threaded member.

[0017] The scooter according to an embodiment of the utility model comprises the rear fork shock absorbing device as described in any of the above embodiments.

[0018] The technical advantages of the scooter according to the embodiment of the utility model are the same as the technical advantages of the rear fork shock absorbing device of the above embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of a rear fork shock absorbing device according to an embodiment of the utility model.

[0020] Figure 2 It is a cross-sectional view of a rear fork shock absorbing device according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of a rear fork in a rear fork shock absorbing device according to an embodiment of the utility model.

[0022] Figure 4 is another exploded view of the rear fork shock absorbing device according to an embodiment of the utility model.

[0023] Figure 5 It is another cross-sectional view of the rear fork shock absorbing device according to an embodiment of the utility model.

[0024] Figure 6 1 is another schematic diagram of a rear fork in a rear fork shock absorbing device according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Rear fork; 11. Left fork plate; 12. Mudguard; 13. Right fork plate; 2. Frame; 21. Limiting hole; 3. Telescopic spring; 4. Pressure rod; 5. Rotating shaft; 6. First bushing; 7. Spring seat; 8. Guide column; 9. Guide bin. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0028] Combine the following Figure 1-Figure 6 A rear fork shock absorbing device according to an embodiment of the utility model is described.

[0029] The rear fork shock absorbing device of the embodiment of the utility model comprises a rear fork 1, a frame 2 and an elastic member. The rear fork 1 and the frame 2 are pivotally connected between a first critical position and a second critical position. The elastic member comprises a telescopic spring 3 or a leaf spring, and the elastic member is sandwiched between the rear fork 1 and the frame 2, and the elastic member presses the rear fork 1 toward the first critical position.

[0030] According to the rear fork shock absorbing device of the embodiment of the utility model, the rear fork 1 can pivot between the first critical position and the second critical position relative to the frame 2, wherein when downward pressure is applied to the frame 2, the rear fork 1 can rotate relative to the frame 2 from the first critical position to the second critical position, and during the rotation process, the elastic member always gives the rear fork 1 a rebound force to reset to the first critical position, and under the action of the rebound force of the elastic member, the rotation speed of the rear fork 1 relative to the frame 2 can be effectively buffered, thereby making the downward pressure and lifting of the rear end of the frame 2 more stable, and the shock absorbing effect of the scooter is better. Moreover, the above-mentioned shock absorbing effect can be achieved by only installing the telescopic spring 3 or the leaf spring clamp between the rear fork 1 and the frame 2 bracket, without the need to set up additional parts such as connecting rods, and the structure is simple while the manufacturing cost is lower.

[0031] It should be noted that when the elastic member is a telescopic spring 3, the rear fork 1 and the frame 2 compress the telescopic spring 3 along the axial direction of the telescopic spring 3. When the elastic member is a leaf spring, both ends of the leaf spring are connected to one of the rear fork 1 and the frame 2, and the middle of the leaf spring is connected to the other of the rear fork 1 and the frame 2, and the rear fork 1 and the frame 2 bend the leaf spring by compressing it to cause the leaf spring to deform elastically.

[0032] In some embodiments, Figure 2 and Figure 5 As shown, one of the rear fork 1 and the frame 2 is provided with a first limit surface and a second limit surface which are opposite to each other along the pivot direction of the rear fork 1, and the other of the rear fork 1 and the frame 2 is connected with a pressure rod 4, which is located between the first limit surface and the second limit surface. When the rear fork 1 is located at the first critical position, the pressure rod 4 abuts against the first limit surface, and when the rear fork 1 is located at the second critical position, the pressure rod 4 abuts against the second limit surface.

[0033] That is, the movement of the pressure rod 4 is limited by the first limiting surface and the second limiting surface to ensure that the rear fork 1 rotates relative to the frame 2 within a set stroke, which can effectively prevent the rear end of the frame 2 from being pressed down too far and causing contact with the ground or transitioning close to the ground, and also effectively prevent the rear end of the frame 2 from being lifted up too far and causing contact between the rear wheel and the frame 2. While ensuring the shock-absorbing effect of the rear fork 1, the driving safety of the vehicle is effectively guaranteed.

[0034] Specifically, the rear fork 1 is pivotally connected to the frame 2 via a rotating shaft 5. For example, Figure 1 and Figure 4As shown, both end faces of the rotating shaft 5 are provided with first threaded holes, and the rear end of the frame 2 extends two connecting plates arranged at intervals along the width direction thereof, and both connecting plates are provided with first mounting holes, and the left fork plate 11 and the right fork plate 13 of the rear fork 1 are provided with second mounting holes, and the rotating shaft 5 passes through the first mounting hole and the second mounting hole, and the bolts are threadedly matched with the first threaded holes to achieve relative fixation of the rotating shaft 5, the rear fork 1 and the frame 2 in the width direction of the frame 2. At this time, a copper sleeve is also provided between the inner wall surface of the second mounting hole and the outer peripheral surface of the rotating shaft 5 to reduce the rotational friction of the rotating shaft 5 relative to the rear fork 1.

[0035] It should be noted that Figure 2 As shown, the pressure rod 4 can be located obliquely above the rotating shaft 5, such as Figure 5 As shown, the pressure rod 4 can also be located obliquely below the rotation axis 5 .

[0036] In some embodiments, Figure 2 and Figure 5 As shown, the pressure rod 4 is connected to the rear fork 1 , and the elastic member includes a telescopic spring 3 . Along the pivoting direction of the rear fork 1 , the telescopic spring 3 is sandwiched between the frame 2 and the pressure rod 4 .

[0037] The shock absorbing effect of the rear fork 1 is achieved by the rebound of the telescopic spring 3. The rear fork 1 compresses the telescopic spring 3 through the pressure rod 4. No additional parts are required, which further simplifies the structure of the scooter and greatly reduces the space occupied by the rear fork shock absorbing device. The telescopic spring 3 can be well hidden between the frame 2 and the pressure rod 4, making the scooter compact in structure and more beautiful in appearance.

[0038] Specifically, one of the end faces of the telescopic spring 3 is located on the moving trajectory of the pressure rod 4. When the pressure rod 4 presses the telescopic spring 3 toward the frame 2 to contract, the end faces of the pressure rod 4 and the telescopic spring 3 are in close line contact and will slide slightly relative to each other, so as to ensure that the telescopic spring 3 contracts along its axial direction and avoid radial deviation of the telescopic spring 3 to affect the rebound stability.

[0039] In some embodiments, Figure 4 and Figure 5 As shown, the rear fork shock absorbing device also includes a guide bin 9, which is connected to the frame 2. The guide bin 9 is provided with a guide hole opening toward the pressure rod 4. The extension direction of the guide hole is consistent with the axial direction of the telescopic spring 3, and the end of the telescopic spring 3 away from the pressure rod 4 is fitted in the guide hole.

[0040] The guide hole of the guide bin 9 limits the telescopic spring 3 in the radial direction, effectively preventing the telescopic spring 3 from being deflected in the radial direction when being extended and retracted, thereby preventing the shock absorbing effect of the rear fork 1 from being affected.

[0041] Specifically, the depth of the guide hole is close to half of the maximum length of the telescopic spring 3, and one end of the telescopic spring 3 is fitted into the guide hole and abuts against or is welded to the bottom surface of the guide hole.

[0042] In some embodiments, Figure 2 As shown, the rear fork shock absorbing device also includes a spring seat 7 and a guide column 8. The spring seat 7 is connected to the frame 2. The telescopic spring 3 is clamped between the spring seat 7 and the pressure rod 4. The guide column 8 is connected to the side of the spring seat 7 facing the pressure rod 4. The axial direction of the guide column 8 is consistent with the axial direction of the telescopic spring 3. One end of the telescopic spring 3 adjacent to the spring seat 7 is sleeved on the guide column 8.

[0043] That is, the frame 2 compresses the telescopic spring 3 through the spring seat 7, wherein the guide column 8 is plugged into the telescopic spring 3 to also limit the telescopic spring 3 in the radial direction, effectively preventing the telescopic spring 3 from radially deviating when being extended and retracted, thereby affecting the shock absorbing effect of the rear fork 1.

[0044] Specifically, Figure 1 As shown, the spring seat 7 is fixed between the two connecting plates of the frame 2 by four bolts, a connecting rod is provided on the end surface of the guide column 8 away from the pressure rod 4, a third mounting hole is provided on the side of the spring seat 7 facing the pressure rod 4, and the connecting rod is inserted into the third mounting hole to realize the fixed installation of the guide column 8 on the spring seat 7.

[0045] In some embodiments, the number of the telescopic springs 3 is at least two, and all the telescopic springs 3 are arranged at intervals along the width direction of the frame 2 .

[0046] The provision of at least two telescopic springs 3 can effectively reduce the elastic coefficient of a single telescopic spring 3 while ensuring the shock-absorbing effect, thereby reducing the difficulty and cost of manufacturing the telescopic spring 3 and lowering the risk of failure of the telescopic spring 3 .

[0047] Specifically, Figure 1 and Figure 4 As shown, the number of the telescopic springs 3 is two.

[0048] In some embodiments, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a limiting hole 21 is provided on the frame 2, and the inner wall surface of the limiting hole 21 forms a first limiting surface and a second limiting surface, and the pressure rod 4 is connected to the rear fork 1 and is loosely fitted in the limiting hole 21. The rear fork shock absorbing device also includes a first bushing 6, the hardness of the first bushing 6 is lower than the hardness of each of the frame 2 and the rear fork 1, the first bushing 6 is connected to the frame 2 through a screw member, at least part of the first bushing 6 is interference-fitted in the limiting hole 21, and the pressure rod 4 is loosely fitted in the first bushing 6.

[0049] The setting of the limiting hole 21 effectively reduces the difficulty of the first bushing 6 resting on the first limiting surface and the second limiting surface. When the pressure rod 4 moves to the first critical position and the second critical position, the pressure rod 4 collides with the first bushing 6 with lower hardness, effectively eliminating the abnormal noise caused by the rigid contact between the pressure rod 4 and the frame 2.

[0050] Specifically, the first bushing 6 is a POM (polyformaldehyde) bushing, and the first bushing 6 is provided with a connecting flange, which is arranged on the side of the connecting plate of the frame 2, and the connecting flange is fixed to the side plate of the connecting plate by bolts, thereby realizing the reliable installation of the first bushing 6 on the frame 2.

[0051] And / or, the rear fork shock absorbing device further includes a second bushing, the hardness of the second bushing is lower than the hardness of each of the frame 2 and the rear fork 1, the second bushing is sleeved on the pressure rod 4, and the second bushing is loosely fitted in the limiting hole 21.

[0052] The second bushing moves with the pressure rod 4. When the pressure rod 4 moves to the first critical position and the second critical position, the second bushing contacts the first limit surface and the second limit surface on the frame 2, which also avoids the pressure rod 4 from making rigid contact with the frame 2 and generating abnormal noise.

[0053] Specifically, the second bushing is also a POM (polyformaldehyde) bushing.

[0054] In some embodiments, Figure 3 and Figure 6 As shown, the rear fork 1 includes a left fork plate 11, a mudguard 12 and a right fork plate 13 connected in sequence, and the pressure rod 4 is located on the side of the mudguard 12 facing the frame 2, and the pressure rod 4 is connected to each of the left fork plate 11 and the right fork plate 13 through a threaded member.

[0055] At this time, the pressure rod 4 and the telescopic spring 3 are hidden in the fender 12 and the frame 2 bracket in the length direction of the scooter, and hidden in the left fork plate 11 and the right fork plate 13 bracket in the width direction of the scooter, so that the appearance of the scooter is more beautiful. The fender 12 separates the telescopic spring 3 and the rear wheel, effectively preventing the rear wheel from splashing mud onto the telescopic spring 3 and affecting the shock absorption effect of the rear fork 1.

[0056] The scooter according to the embodiment of the utility model comprises a rear fork shock absorbing device as in any of the above embodiments.

[0057] The technical advantages of the scooter according to the embodiment of the utility model are the same as the technical advantages of the rear fork shock absorbing device of the above embodiment, which will not be repeated here.

[0058] Specifically, the mobility scooter includes an electric scooter.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A rear fork shock absorbing device, characterized in that: The bicycle comprises a rear fork, a frame and an elastic member, wherein the rear fork and the frame are pivotally connected between a first critical position and a second critical position; the elastic member comprises a telescopic spring or a leaf spring, the elastic member is sandwiched between the rear fork and the frame, and the elastic member presses the rear fork toward the first critical position; One of the rear fork and the frame is provided with a first limit surface and a second limit surface opposite to each other along the pivot direction of the rear fork, and the other of the rear fork and the frame is connected with a pressure rod, and the pressure rod is located between the first limit surface and the second limit surface. When the rear fork is located at the first critical position, the pressure rod abuts against the first limit surface, and when the rear fork is located at the second critical position, the pressure rod abuts against the second limit surface.

2. The rear fork shock absorbing device according to claim 1, characterized in that: The pressure rod is connected to the rear fork, and the elastic member includes the telescopic spring. Along the pivoting direction of the rear fork, the telescopic spring is clamped between the frame and the pressure rod.

3. The rear fork shock absorbing device according to claim 2, characterized in that: The rear fork shock absorbing device also includes a guide bin, which is connected to the frame. The guide bin is provided with a guide hole opening toward the pressure rod. The extension direction of the guide hole is consistent with the axial direction of the telescopic spring. One end of the telescopic spring away from the pressure rod is fitted in the guide hole.

4. The rear fork shock absorbing device according to claim 2, characterized in that: The rear fork shock absorbing device also includes a spring seat and a guide column, the spring seat is connected to the frame, the telescopic spring is clamped between the spring seat and the pressure rod, the guide column is connected to the side of the spring seat facing the pressure rod, the axial direction of the guide column is consistent with the axial direction of the telescopic spring, and one end of the telescopic spring adjacent to the spring seat is sleeved on the guide column.

5. The rear fork shock absorbing device according to claim 2, characterized in that: There are at least two telescopic springs, and all the telescopic springs are arranged at intervals along the width direction of the frame.

6. The rear fork shock absorbing device according to any one of claims 1 to 5, characterized in that: The frame is provided with a limiting hole, the inner wall surface of the limiting hole forms the first limiting surface and the second limiting surface, and the pressure rod is connected to the rear fork and is clearance-fitted in the limiting hole.

7. The rear fork shock absorbing device according to claim 6, characterized in that: The rear fork shock absorbing device further comprises a first bushing, the hardness of the first bushing is lower than the hardness of each of the frame and the rear fork, the first bushing is connected to the frame via a threaded member, at least a portion of the first bushing is interference fit in the limiting hole, and the pressure rod is clearance fit in the first bushing; And / or, the rear fork shock absorbing device further comprises a second bushing, the hardness of the second bushing is lower than the hardness of each of the frame and the rear fork, the second bushing is sleeved on the pressure rod, and the second bushing is loosely fitted in the limiting hole.

8. The rear fork shock absorbing device according to claim 6, characterized in that: The rear fork comprises a left fork plate, a mudguard and a right fork plate which are connected in sequence. The pressure rod is located on the side of the mudguard facing the frame. The pressure rod is connected to each of the left fork plate and the right fork plate through a threaded member.

9. A mobility scooter, characterized in that: It comprises a rear fork shock absorbing device according to any one of claims 1-8.

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