Quick-release mandrel structure of bicycle

Abstract

A quick-release mandrel structure of a bicycle comprises a quick-release handle, a shaft rod and a clamping piece. A shaft rod end face of the shaft rod is concaved inwards to form a groove, an expansion groove is formed between the groove and the shaft rod end face, the radial sectional area of the expansion groove is larger than that of the groove, an elastic piece is arranged on the inner wall face of the groove, and at least one clamping portion clamped between the quick release handle and the shaft rod is integrally formed on the outer wall face of the clamping piece in a protruding mode. By means of the elastic piece and the two supporting positions of the clamping part, the clamping piece and the shaft rod can be stably combined, and the purpose of noise reduction is achieved when the bicycle runs.

Description

Technical Field

[0001] The utility model relates to a quick-release structure, in particular to a bicycle quick-release spindle structure which can quickly combine a bicycle frame with a wheel. Background Art

[0002] The existing bicycle quick-release spindle structure includes a quick-release handle, a clamping part and a shaft rod. One end of the quick-release handle is an end seat, and the end seat is axially recessed with an inner groove; the shaft rod is axially penetrated with a through groove, and an inner ring groove is recessed on the inner wall of the shaft rod, and an elastic member is arranged in the inner ring groove; the clamping part is an elongated rod body with equal diameter, and the two ends of the clamping part are respectively penetrated in the inner groove of the quick-release handle and the through groove of the shaft rod, and the outer wall surface of the clamping part is in contact with the inner edge of the elastic member. Through the above structure, through the setting of the clamping part, the quick-release handle and the shaft rod can be simply combined with each other, that is, they can be used to fix the frame and wheels of the bicycle.

[0003] However, in order to make the existing clamping part easy to be inserted into the shaft rod, the clamping part will have tolerance during production, so that the diameter of the clamping part is smaller than the diameter of the through groove. Therefore, a gap is generated when the clamping part and the shaft rod are assembled. Only the single elastic part is sleeved on the outer wall surface of the clamping part, and the buffering and stabilizing effect between the clamping part and the shaft rod is poor. As a result, when the bicycle is running, the clamping part will hit the inner wall surface of the shaft rod due to swinging and continuously make noise. There is indeed a need for improvement. Utility Model Content

[0004] In order to improve the problem of common clamping parts in the prior art hitting the inner wall of the shaft rod and generating noise due to poor tolerance or stability, the utility model provides a bicycle quick-release spindle structure.

[0005] In one embodiment of the utility model, a bicycle quick-release spindle structure is disclosed, comprising a quick-release handle, a shaft rod and a clamping piece. An end face of the shaft rod is concave to form a groove, an expansion groove is formed between the groove and the end face of the shaft rod, the radial cross-sectional area of ​​the expansion groove is larger than the radial cross-sectional area of ​​the groove, the inner wall surface of the groove is concave to form an inner ring groove, and an elastic piece is arranged in the inner ring groove. One end of the clamping piece is combined with the quick-release handle, and the other end is detachably arranged in the groove, and the outer wall surface of the clamping piece is integrally formed with at least one clamping portion that is buckled between the quick-release handle and the shaft rod.

[0006] In an embodiment of the present invention, when the clamping member is disposed in the groove, the outer wall surface of the clamping member abuts against the inner edge of the elastic member, and the outer wall surface of the clamping portion abuts against the inner wall surface of the expansion groove.

[0007] In an embodiment of the present invention, the quick-release handle is recessed to form an end seat groove, and at least a portion of both ends of the clamping portion are respectively disposed in the expansion groove and the end seat groove.

[0008] In one embodiment of the utility model, an end seat end surface of the quick-release handle is concave to form a receiving groove, and one end of the clamping portion is against the inner wall surface of the receiving groove, wherein when the clamping piece is arranged in the groove, the outer wall surface of the clamping piece is against the inner edge of the elastic piece, and at least a portion of the clamping portion is against the shaft rod.

[0009] In an embodiment of the present invention, at least a portion of the locking portion axially protrudes out of the receiving groove.

[0010] In an embodiment of the present invention, a diameter formed by the outer wall surface of the clamping portion gradually decreases toward the groove to form an inclined surface, and the shape of the expanded groove corresponds to the shape of the inclined surface.

[0011] In one embodiment of the utility model, any point of the outer wall surface of the clamping portion extends radially outward to form an extension portion, wherein when one end of the clamping member is disposed in the groove, the outer wall surface of the clamping member abuts against the inner edge of the elastic member, and the two side surfaces of the extension portion respectively abut against the quick release handle and the shaft rod.

[0012] In an embodiment of the present invention, the outer wall surface of the clamping piece is radially recessed to form an annular recess, the annular recess accommodates the clamping portion, and the inner edge of the clamping portion is in contact with the wall surface of the annular recess.

[0013] In one embodiment of the utility model, the end surface of the quick-release handle corresponding to the shaft rod is concave to form a receiving groove, at least a portion of the two ends of the clamping portion are respectively arranged in the expansion groove and the receiving groove, and the outer wall surfaces at the two ends of the clamping portion are respectively abutted against the inner wall surfaces of the expansion groove and the receiving groove.

[0014] In an embodiment of the present invention, a middle section from the extending portion to the locking portion extends radially outward.

[0015] Through the above structure, the advantages of the utility model are as follows:

[0016] When the clamping part is assembled with the shaft rod, the elastic part and the clamping portion can provide buffering and supporting effects, reduce the influence of tolerance on the clamping part during production, and improve the stability of the combination of the clamping part and the shaft rod, so as to achieve the effect of reducing the noise generated by the arbitrary swinging of the clamping part when the bicycle is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the state of the utility model;

[0018] Figure 2 It is a side cross-sectional schematic diagram of the first embodiment of the utility model;

[0019] Figure 3It is a partially enlarged cross-sectional schematic diagram of the first preferred embodiment of the utility model;

[0020] Figure 4 It is a partially enlarged cross-sectional schematic diagram of a second preferred embodiment of the utility model;

[0021] Figure 5 It is a partially enlarged cross-sectional schematic diagram of a third preferred embodiment of the utility model;

[0022] Figure 6 It is a partially enlarged cross-sectional schematic diagram of a fourth preferred embodiment of the utility model;

[0023] Figure 7 It is a partially enlarged cross-sectional schematic diagram of a fifth preferred embodiment of the utility model;

[0024] Figure 8 It is a partially enlarged cross-sectional schematic diagram of the sixth preferred embodiment of the utility model.

[0025] Explanation of symbols:

[0026] 10: Quick release handle

[0027] 12: End seat

[0028] 121: End seat groove

[0029] 122: End surface of end seat

[0030] 14: Top edge

[0031] 142: Inner ring wall

[0032] 16: Receiving groove

[0033] 20: Axis

[0034] 201: shaft end face

[0035] 22: Groove

[0036] 221: Inner ring groove

[0037] 24: Slot expansion

[0038] 26: Elastic parts

[0039] 30: Card parts

[0040] 32: Card Department

[0041] 33: Extension

[0042] 331: Arc segment

[0043] 34: Limiting recess

[0044] A: Bicycle DETAILED DESCRIPTION

[0045] The following will explain the content of the utility model through embodiments. The embodiments of the utility model are not intended to limit the utility model to any specific environment, application or special method as described in the embodiments. Therefore, the description of the embodiments is only for the purpose of explaining the utility model, and is not intended to limit the utility model. It should be noted that in the following embodiments and drawings, elements that are not directly related to the utility model have been omitted and not drawn, and the dimensional relationship between the elements in the drawings is only for easy understanding, and is not intended to limit the actual proportion.

[0046] See also Figure 1 The bicycle quick-release spindle structure of the utility model is used to be arranged between the frame and the wheel of a bicycle A. By loosening the bicycle quick-release spindle structure and then pulling out the bicycle quick-release spindle structure, the frame and the wheel can be separated. By tightening the bicycle quick-release spindle structure, the frame and the wheel of the bicycle A can be firmly combined.

[0047] please Figure 2 and Figure 3 The bicycle quick-release spindle structure of the utility model comprises a quick-release handle 10 , a shaft rod 20 and a clamping member 30 .

[0048] An end face 201 of the shaft 20 is recessed to form a groove 22, and an expansion groove 24 is formed between the groove 22 and the end face 201 of the shaft 20. The radial cross-sectional area of ​​the expansion groove 24 is larger than the radial cross-sectional area of ​​the groove 22. The inner wall surface of the groove 22 is recessed to form an inner annular groove 221, and an elastic member 26 is disposed in the inner annular groove 221.

[0049] One end of the clamping member 30 is coupled to the quick release handle 10, and the other end is detachably inserted into the groove 22, wherein the maximum diameter of the clamping member 30 is slightly smaller than the maximum diameter of the groove 22, so that the clamping member 30 can be detachably inserted into the groove 22. When one end of the clamping member 30 is disposed in the groove 22, the outer wall surface of the clamping member 30 abuts against the inner edge of the elastic member 26 and is clamped by the elastic member 26. At least one clamping portion 32 is integrally formed on the outer wall surface of the clamping member 30, and when one end of the clamping member 30 is disposed in the groove 22, the outer wall surface of the clamping portion 32 abuts against the inner wall surface of the expansion slot 24.

[0050] Through the above structure, when the clamping member 30 is assembled with the shaft 20, the clamping member 30 and the inner wall surface of the shaft 20 have at least two contact support positions, one of which is supported by the elastic member 26 as a buffer, and the other is supported by the combination of the circumference of the clamping portion 32 and the expansion groove 24 as a support buffer. The above two contact supports can improve the stability of the clamping member 30 when combined with the shaft 20, and effectively reduce the vibration caused by riding when the clamping member 30 is placed on the bicycle A and collides with the inner wall of the groove 22 to produce abnormal noise. In addition, due to the structural relationship that the clamping member 30 is pressed against the expansion groove 24 through the clamping portion 32, the problem of parts wear caused by shaking of the clamping member 30 can also be reduced, and the service life can be increased.

[0051] Although another implementation is not disclosed in the drawings, it should be easy to understand from the description that a plurality of locking portions 32 are disposed around the outer wall of the locking member 30 .

[0052] See also Figure 3 One end of the quick release handle 10 is an end seat 12, and an end seat end surface 122 of the end seat 12 is concave to form an end seat groove 121, and a top edge 14 is formed between the end seat groove 121 and the end seat end surface 122. At least a portion of the two ends of the clamping portion 32 are respectively disposed in the expansion groove 24 and the end seat groove 121, and one end of the clamping portion 32 abuts against the top edge 14.

[0053] The radial cross-section of the clamping portion 32 is of equal diameter, and the outer wall surfaces at both ends of the clamping portion 32 are respectively abutted against the inner wall surface of the expansion groove 24 and the inner wall surface of the end seat groove 121, and the end surface of one end of the clamping portion 32 is abutted against the top edge 14, so that the clamping component 30 is not easy to be axially displaced during assembly, thereby achieving the purpose of the clamping component 30 being able to stably combine with the quick-release handle 10 and the shaft rod 20.

[0054] The outer wall surface of the clamping portion 32 is concave to form a limiting recess 34, which can abut against the inner edge of the elastic member 26. The limiting recess 34 cooperates with the inner annular groove 221 to limit the elastic member 26 and prevent the elastic member 26 from moving randomly.

[0055] See also Figure 4 The diameter formed by the outer wall of the clamping portion 32 gradually decreases toward the expansion slot 24, so that the outer wall of the clamping portion 32 is inclined toward the expansion slot 24 to form an inclined surface, and the shape of the expansion slot 24 corresponds to the shape of the above-mentioned inclined surface of the clamping portion 32. Through the above structure, the inclined structure formed by the clamping portion 32 and the expansion slot 24 is convenient for the user to clamp the clamping portion 32 in the expansion slot 24 along the direction of the inclined structure, so that the shaft 20 and the clamping member 30 are easy to combine, and the diameter difference of the clamping portion 32 can also be used to prevent the axial displacement of the clamping portion 32.

[0056] See also Figure 5 In the third embodiment of the utility model, an end seat end face 121 of the end seat 12 of the quick release handle 10 is concavely formed with a receiving groove 16, and an inner ring wall 142 is formed in the receiving groove 16. At least a part of the two ends of the clamping part 30 is respectively arranged in the groove 22 and the receiving groove 16. Preferably, the outer wall surfaces of the two ends of the clamping part 32 are respectively abutted against the inner wall surface of the expansion groove 24 and the inner wall surface of the receiving groove 16, and the end face of one end of the clamping part 32 is against the inner ring wall 142. The clamping part 32 is sleeved outside the clamping part 30 to relatively increase the overall diameter, and the structural feature of the clamping part 32 extending and arranged on the quick release handle 10 and the shaft rod 20 is utilized to increase the strength of the clamping part 30 in combining the quick release handle 10 and the shaft rod 20 at the same time. The clamping portion 32 is a hard or soft structure of equal diameter. The hard structure refers to metal, and the soft structure refers to nitrile rubber (Nitrile Butadiene Rubber, NBR), thermoplastic rubber (Thermo-Plastic-Rubbermaterial, TPR) or silicone. The soft structure can enhance the buffering capacity of the clamping portion 32 and further enhance the effect of shock absorption and noise reduction.

[0057] Through the above structure, when the clamping member 30 is assembled with the shaft 20, the clamping member 30 and the inner wall surface of the shaft 20 have at least two contact support positions, one of which is supported by the elastic member 26 as a buffer, and the other is supported by the combination of the circumference of the clamping portion 32 and the expansion groove 24 as a support buffer. The above two contact supports can improve the stability of the clamping member 30 when combined with the shaft 20, and effectively reduce the vibration caused by riding when the clamping member 30 is placed on the bicycle A and collides with the inner wall of the groove 22 to produce abnormal noise. In addition, due to the structural relationship that the clamping member 30 is pressed against the expansion groove 24 through the clamping portion 32, the problem of parts wear caused by shaking of the clamping member 30 can also be reduced, and the service life can be increased.

[0058] See also Figure 6 , which is different from the above-mentioned embodiment, in the bicycle quick-release spindle structure of the utility model, the receiving groove 16 is only formed by the concave in the end seat end surface 121, and the clamping portion 32 is accommodated in the receiving groove 16, that is, the clamping portion 32 is not arranged in the shaft rod 20. The two ends of the clamping portion 32 are respectively abutted against the shaft rod end surface 201 and the inner annular wall 14 formed in the receiving groove 16. Preferably, at least a part of the clamping portion 32 protrudes axially from the receiving groove 16, so that when the clamping portion 32 is arranged in the receiving groove 16, after the quick-release handle 10 and the shaft rod 20 are assembled correspondingly via the clamping portion 32, a gap 40 exists between the quick-release handle 10 and the shaft rod 20.

[0059] Please see Figure 7 A clamping portion 32 is sleeved on the outer wall surface of the clamping member 30, and any point of the outer wall surface of the clamping portion 32 extends radially outward to form a sheet-like extension portion 33. When one end of the clamping member 30 is set in the groove 22, the outer wall surface of the clamping member 30 is abutted against the inner edge of the elastic member 26 and clamped by the elastic member 26. The outer wall surface of the clamping portion 32 is abutted against the inner wall surface of the expansion groove 24, and the two side surfaces of the extension portion 33 are respectively abutted against the end surfaces of the quick-release handle 10 and the shaft rod 20 corresponding to each other.

[0060] In addition, the extension portion 33 extends radially outward to the middle section of the clamping portion 32. When the clamping member 30 is assembled, the two ends of the clamping portion 32 are respectively located in the expansion groove 24 and the accommodating groove 16, and the length formed by the axial extension of the extension portion 33 is smaller than the length formed by the axial extension of the clamping portion 32. The clamping portion 32 is a hard or soft structure, and the extension portion 33 is a soft structure. The above-mentioned hard structure refers to metal, and the soft structure refers to nitrile rubber (Nitrile ButadieneRubber, NBR), thermoplastic rubber (Thermo-Plastic-Rubber material, TPR) or silicone.

[0061] Through the above structure, the advantages of the utility model are as follows:

[0062] First, when the clamping part 30 is assembled with the shaft rod 20, there are at least two contact support positions between the clamping part 30 and the inner wall surface of the shaft rod 20, one of which is supported by the elastic part 26 as a buffer, and the other is supported by the combination of the circumference of the clamping part 32 and the expansion groove 24 as a support buffer. The contact supports at the above two locations can improve the stability of the clamping part 30 when combined with the shaft rod 20, reduce the influence of the tolerance of the clamping part 30 during production, so as to achieve the effect of reducing the noise generated by the arbitrary swing of the clamping part 30 when the bicycle is running.

[0063] Furthermore, the configuration of the extension portion 33 can increase the contact area between the clamping portion 32 and the quick release handle 10 and the shaft 20. Combined with the soft structure of the extension portion 33, the shock absorption and noise reduction effect can be further enhanced, and the friction resistance can be increased to reduce the axial rotation force of the quick release handle 10 or the shaft 20.

[0064] In addition, the outer wall surface of the clamping member 30 is radially recessed to form an annular recess 31, and the annular recess 31 accommodates the clamping portion 32. The inner annular wall of the clamping portion 32 is pressed against the wall surface of the annular recess 31, thereby achieving the effect of limiting the clamping portion 32.

[0065] Please refer to Figure 8In the sixth embodiment of the present invention, an end seat end surface 101 of the quick release handle 10 is concave to form the accommodating groove 16, and the accommodating groove 16 is formed corresponding to the shape of the clamping portion 32 at one end and at least a portion of the extending portion 33.

[0066] In this embodiment, the extension portion 33 extends radially along the end surface of one end of the clamping portion 32. When the clamping portion 32 is sleeved on the clamping member 30 and placed in the receiving groove 16, at least a portion of the extension portion 33 protrudes axially from the receiving groove 16, and one of the side surfaces of the extension portion 33 corresponding to the shaft rod 20 is in contact with the shaft rod end surface 201. In this way, after the quick release handle 10 and the shaft rod 20 are assembled correspondingly via the clamping portion 32, a gap 40 is formed between the quick release handle 10 and the shaft rod 20. This prevents the end seat 12 of the quick release handle 10 from directly contacting the shaft rod 20, thereby isolating the possibility of mutual contact between the quick release handle 10 and the shaft rod 20, slowing down the wear of the contact between the quick release handle 10 and the shaft rod 20, and further improving the service life of the bicycle quick release spindle structure of the utility model.

[0067] Furthermore, the diameter of the groove formed by the expanded groove 24 gradually increases toward the end face of the shaft rod 20, so that the inner wall of the expanded groove 24 is inclined, and the outer wall surface of the clamping portion 32 is inclined relative to the inner wall of the groove of the expanded groove 24. In addition to making it easy for the clamping part 30 to be combined with the shaft rod 20, the above-mentioned inclined structure can also improve the stability of the clamping portion 32 when combined with the shaft rod 20, and also use the diameter size difference of the clamping portion 32 to prevent the axial displacement of the clamping portion 32.

[0068] Through the above structure, after the clamping portion 32 is accommodated in the accommodating groove 12, a part of the clamping portion 32 will protrude from the accommodating groove 16. Through the blocking of the extension portion 33, the end seat end surface 101 will not contact the shaft rod end surface 201, further reducing the sound generated by the contact friction between the quick release handle 10 and the shaft rod 20, and also reducing the contact wear between the quick release handle 10 and the shaft rod 20, further improving the service life of the bicycle quick release spindle structure of the utility model.

[0069] The extension portion 33 is in an arc shape as a whole. In this embodiment, the end surface of the extension portion 33 facing the 16 is concave and forms an arc segment 331 protruding from the receiving groove 16. It should be noted that at least a portion of the edge of the extension portion 33 protrudes from the receiving groove 16. When the clamping portion 32 is combined with the shaft 20 and the quick release handle 10, the shaft 20 presses the arc segment 331 protruding from the receiving groove 16, and the extension portion 33 is radially extended and deformed, and abutting force is generated between the edge of the extension portion 33 and the receiving groove 12, which can strengthen the abutting force between the extension portion 33 and the quick release handle 10, thereby increasing the combination stability of the quick release handle 10 and the shaft 20, and also avoiding the friction or collision caused by the direct contact between the quick release handle 10 and the shaft 20 to produce sound.

[0070] The end surface of the extension portion 33 facing the quick release handle 10 may also be concave, so that at least a portion of the edge of the extension portion 33 protrudes from the receiving groove 16. In this way, when the clamping portion 32 is combined with the shaft 20 and the quick release handle 10, the extension portion 33 can also be extended and deformed in the radial direction, and the edge of the extension portion 33 and the receiving groove 16 can produce abutment effect.

[0071] In another embodiment, the difference from the above is that a groove annular wall formed by the receiving groove 16 extends obliquely toward the end seat end surface 101, and the diameter formed by the groove bottom of the receiving groove 16 is greater than the diameter formed by the notch of the receiving groove 16. In this way, when the extension portion 33 is deformed by extrusion and radial extension, the edge of the extension portion 33 will deform toward the groove bottom of the receiving groove 16 according to the inclined structure of the groove annular wall, and at the same time, the limiting effect can be achieved through the difference in diameter between the groove bottom of the receiving groove 16 and the notch of the receiving groove 16.

Claims

1. A bicycle quick-release spindle structure, characterized in that: Include: A quick release handle; A shaft rod, a shaft rod end surface of which is concave to form a groove, an expansion groove is formed between the groove and the shaft rod end surface, the radial cross-sectional area of ​​the expansion groove is larger than the radial cross-sectional area of ​​the groove, an inner ring groove is concavely formed on the inner wall surface of the groove, and an elastic member is disposed in the inner ring groove; and A clamping piece has one end coupled to the quick-release handle and the other end detachably inserted into the groove. The outer wall surface of the clamping piece is provided with at least one clamping portion buckled between the quick-release handle and the shaft rod.

2. The bicycle quick-release spindle structure according to claim 1, characterized in that: When the clamping piece is arranged in the groove, the outer wall surface of the clamping piece abuts against the inner edge of the elastic piece, and the outer wall surface of the clamping portion abuts against the inner wall surface of the expansion groove.

3. The bicycle quick-release spindle structure according to claim 2, characterized in that: The quick-release handle is recessed to form an end seat groove, and at least a portion of the two ends of the clamping portion are respectively disposed in the expansion groove and the end seat groove.

4. The bicycle quick-release spindle structure according to claim 1, characterized in that: The end seat end surface of one end of the quick-release handle is concave to form a receiving groove, and one end of the clamping part is against the inner wall surface of the receiving groove. When the clamping part is set in the groove, the outer wall surface of the clamping part is against the inner edge of the elastic part, and at least a part of the clamping part is against the shaft.

5. The bicycle quick-release spindle structure according to claim 4, characterized in that: At least a portion of the clamping portion axially protrudes from the accommodating groove.

6. The bicycle quick-release spindle structure according to claim 5, characterized in that: The outer wall surface of the clamping portion has a diameter that gradually decreases toward the groove to form an inclined surface, and the shape of the expanded groove corresponds to the shape of the inclined surface.

7. The bicycle quick-release spindle structure according to claim 1, characterized in that: Any point of the outer wall surface of the clamping portion extends radially outward to form an extension portion, wherein when one end of the clamping piece is set in the groove, the outer wall surface of the clamping piece is in contact with the inner edge of the elastic piece, and the two side surfaces of the extension portion are respectively in contact with the quick release handle and the shaft rod.

8. The bicycle quick-release spindle structure according to claim 7, characterized in that: The outer wall surface of the clamping piece is radially recessed to form an annular recess, and the annular recess accommodates the clamping part, and the inner edge of the clamping part is pressed against the wall surface of the annular recess.

9. The bicycle quick-release spindle structure according to claim 8, characterized in that: The end surface of the quick release handle corresponding to the shaft rod is concave to form a receiving groove, at least a portion of the two ends of the clamping part are respectively arranged in the expansion groove and the receiving groove, and the outer wall surfaces of the two ends of the clamping part are respectively abutted against the expansion groove and the inner wall surfaces of the receiving groove.

10. The bicycle quick-release spindle structure according to claim 9, characterized in that: The extension portion extends radially outward to a middle section of the clamping portion.

Images