Pipe clamp for bicycle hub and sleeve

Abstract

The invention discloses a pipe clamp for a hub and a sleeve of a bicycle, which comprises arc-shaped clamping rings including a first arc-shaped clamping ring and a second arc-shaped clamping ring, the buffering ring is provided with a double-layer attaching part, and the inner ring of the arc-shaped clamping ring is in contact with the buffering ring; and in the radial outward direction of the buffer ring, the attaching part sequentially comprises a covering section and a convex tongue section, the covering section is clamped by the clamping position, and a kidney-shaped hole allowing a bolt to penetrate through is formed in the covering section. The kidney-shaped holes comprise the first kidney-shaped hole and the second kidney-shaped hole which are perpendicular to each other and attached in a crossed mode, a square through hole is formed in the overlapping position of the first kidney-shaped hole and the second kidney-shaped hole, the outline of the square through hole is square, the side length of the square through hole is smaller than the diameter of the bolt, and the diagonal length of the square through hole is larger than the diameter of the bolt. By the adoption of the buffer ring, a bicycle sleeve or a hub can be buffered and protected, the locating and tightening effect of the buffer ring is good, and the buffer ring also has the effect of improving assembly similar to that of a gasket for a bolt.

Description

Technical Field

[0001] The invention relates to the field of bicycle accessories, and in particular to a pipe clamp used for a bicycle hub and a sleeve. Background Art

[0002] The bicycle sleeve is a round tube-shaped component, and the bicycle hub is commonly known as the "hub barrel", which is the barrel outside the axle that connects the spokes. The outer wall of the bicycle sleeve and bicycle hub sometimes also fixes parts such as clamps. Traditional hard clamps are not suitable for use in the field of bicycle assembly, because hard contact will cause damage to the outer wall of the bicycle sleeve and bicycle hub. Therefore, a convenient pipe clamp with elastic buffer should be specially designed. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a pipe clamp for bicycle hubs and sleeves, which can provide buffer protection for bicycle sleeves and has a good clamping effect. At the same time, the buffer ring is not easy to slip off, and it is also convenient to adjust the tightness of the buffer ring itself according to the situation of the pipe clamp, so as to avoid wrinkles or uneven local arrangement of the buffer ring.

[0004] In order to solve the above problems, the present invention provides a pipe clamp for a bicycle hub and a sleeve. In order to achieve the above objectives, the technical solution adopted by the present invention to solve the technical problems is:

[0005] A pipe clamp for a bicycle hub and a sleeve comprises: an arc-shaped snap ring, comprising a first arc-shaped snap ring and a second arc-shaped snap ring, wherein the two ends of the first arc-shaped snap ring and the second arc-shaped snap ring are butted against each other to form a clamping joint and a bolt connection; a buffer ring, wherein a double-layer fitting portion is provided, wherein the inner ring of the arc-shaped snap ring contacts the buffer ring; along the radial outward direction of the buffer ring, the fitting portion comprises a covering section and a tongue section in sequence, wherein the covering section is clamped by the clamping joint, and the covering section is located at the bolt connection; a waist-shaped hole comprises a first waist-shaped hole and a second waist-shaped hole which are perpendicularly and cross-fitted against each other, wherein the overlap of the first waist-shaped hole and the second waist-shaped hole forms a square through hole, wherein the outline of the square through hole is a square, the side length of the square through hole is less than the diameter of the bolt, and the diagonal length of the square through hole is greater than the diameter of the bolt.

[0006] The beneficial effect of adopting the above technical solution is that the pipe clamp of the technical solution and the bicycle sleeve can be disassembled and assembled relatively quickly because one end thereof is a clamping structure. The clamping of the bicycle sleeve by the pipe clamp relies on the bolts at the bolt connection. There is also a buffer ring between the arc-shaped snap ring and the bicycle sleeve as a buffer, and the buffer ring can prevent the arc-shaped snap ring from clamping the bicycle sleeve. The buffer ring is limited by the bolt to prevent the buffer ring from falling off. Due to the mutual extrusion between the arc-shaped snap ring and the bicycle sleeve, the thickness and length of the buffer ring itself will undergo elastic deformation, so the waist-shaped hole leaves a margin. When the buffer ring is squeezed and its own length becomes longer and its thickness becomes thinner, the tongue section of the fitting part is properly pulled, and the waist-shaped hole will move outward, but the bolt can still pass through, thereby preventing the buffer ring from being clamped between the arc-shaped snap ring and the bicycle sleeve in a wrinkled state.

[0007] Among them, the first waist-shaped hole and the second waist-shaped hole intersect each other to naturally form a square through hole, which is neither too large nor too small, and the relationship between its side length, diagonal length and bolt diameter is respectively limited. The square through hole is large enough to facilitate the passage of the bolt; and small enough, so that a part of the edge of the square through hole is squeezed and deformed by the bolt and radially squeezed outward. Finally, the deformed square through hole can also tightly bite the external thread of the bolt, acting as a gasket. Finally, the bolt has a good tightening effect on the pipe clamp. In addition, the slight offset between the first waist-shaped hole and the second waist-shaped hole will not affect the generation of the square through hole. On the contrary, the size and shape of the square through hole are relatively stable. It has good circumferential wrapping and clamping capabilities for the butler or hub in bicycle accessories.

[0008] As a further improvement of the present invention, the widths of the first waist-shaped hole and the second waist-shaped hole are equal, and the lengths of the first waist-shaped hole and the second waist-shaped hole are equal; the length direction of the first waist-shaped hole is perpendicular to the length direction of the buffer ring, and the length direction of the second waist-shaped hole is parallel to the length direction of the buffer ring.

[0009] The beneficial effect of adopting the above technical solution is that the first waist-shaped hole and the second waist-shaped hole are actually uniform in shape and size, which is easy to process.

[0010] As a further improvement of the present invention, the tongue section is located at one end of the buffer ring, and the other end of the buffer ring has a first bending section integrally connected to the covering section, and the end of the first bending section facing away from the covering section is also integrally connected to the second bending section, the first bending section and the second bending section form an L-shaped piece, and the second bending section is parallel to the fitting portion; the second bending section has a circular hole for the bolt to pass through.

[0011] The beneficial effects of adopting the above technical solution are: the first bending section and the second bending section are formed by the buffer ring being bent by 90 degrees, the L-shaped piece can hook one end of the arc-shaped clamping ring, and the second bending section with a circular hole forms a genuine washer, which plays a stabilizing effect of the washer for the assembly of the bolt. This washer works together with the equivalent washer formed by the two cross waist-shaped holes, which is further conducive to assembly limit.

[0012] As a further improvement of the present invention, along the axial direction of the circular hole, the centroid of the circular hole coincides with the centroid of the waist-shaped hole, and the inner diameter of the circular hole is not less than the diameter of the bolt.

[0013] The beneficial effect of adopting the above technical solution is that the inner diameter of the circular hole is relatively large to allow the bolt to pass through smoothly. Unlike the square through hole, the circular hole and the bolt almost do not involve radial outward deformation when assembled.

[0014] As a further improvement of the present invention, one end of the first arc-shaped snap ring has a groove, and one end of the second arc-shaped snap ring has a convex hook, and the groove and the convex hook form a clamping point; along the cross-section perpendicular to the axis of the buffer ring, the cross-sectional profiles of the groove and the convex hook match each other.

[0015] The beneficial effect of adopting the above technical solution is that this clamping method is convenient for assembly and disassembly.

[0016] As a further improvement of the present invention, one end of the first arc-shaped snap ring has a first radial section, one end of the second arc-shaped snap ring has a second radial section, and the first radial section and the second radial section are covering sections of the clamping fitting portion; the first semicircular arc section of the first arc-shaped snap ring is between the groove and the first radial section, and the second semicircular arc section of the second arc-shaped snap ring is between the convex hook and the second radial section.

[0017] The beneficial effect of adopting the above technical solution is that the first radial section and the second radial section increase the radial size, so as to have more contact area with the fitting part.

[0018] As a further improvement of the present invention, the first semicircular arc segment and the second semicircular arc segment are provided with serrated surfaces in contact with the buffer ring.

[0019] The beneficial effect of adopting the above technical solution is that the serrated surface increases the friction coefficient and prevents the buffer ring from slipping.

[0020] As a further improvement of the present invention, the first radial segment and the second radial segment are provided with a first through hole and a second through hole respectively, and the first through hole and the second through hole are provided for a bolt to pass through.

[0021] The beneficial effect of adopting the above technical solution is that the first radial section and the second radial section facilitate the layout of the first through hole and the second through hole.

[0022] As a further improvement of the present invention, when the buffer ring is not in contact with the bicycle sleeve, the axes of the first through hole and the second through hole pass through the centroid of the waist-shaped hole.

[0023] The beneficial effect of adopting the above technical solution is that when the buffer ring is not subjected to external forces other than gravity, the waist-shaped hole should leave enough margin to facilitate the front and rear tightness adjustment of the fitting part.

[0024] As a further improvement of the present invention, the buffer ring is made of rubber, and the first arc-shaped clamping ring and the second arc-shaped clamping ring are cast aluminum.

[0025] The beneficial effect of adopting the above technical solution is that the materials of the buffer ring, the first arc-shaped clamping ring and the second arc-shaped clamping ring are convenient for use in the bicycle field. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 is an exploded view of an embodiment of the present invention;

[0028] Figure 2 is an exploded view of an embodiment of the present invention;

[0029] Figure 3 is a top view of an embodiment of the present invention;

[0030] Figure 4 is an exploded view of an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the cross-sectional profile of a first waist-shaped hole, a second waist-shaped hole, and a bolt according to an embodiment of the present invention.

[0032] 1-buffer ring; 1a-annular portion; 1b-covering section; 1c-tongue section; 1d-first waist-shaped hole; 1e-second waist-shaped hole; 1f-circular hole; 1g-first bending section; 1h-second bending section; 1i-square through hole; 2-first arc-shaped snap ring; 2a-groove; 2b-first semicircular arc section; 2c-first radial section; 2d-first through hole; 3-second arc-shaped snap ring; 3a-convex hook; 3b-second semicircular arc section; 3c-second radial section; 3d-second through hole; 4-bolt; 5-serrated surface; 6-hollow hole. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with specific embodiments:

[0034] In order to achieve the purpose of the present invention, a pipe clamp for a bicycle hub and a sleeve comprises: an arc-shaped snap ring, including a first arc-shaped snap ring 2 and a second arc-shaped snap ring 3, the two ends of the first arc-shaped snap ring 2 and the second arc-shaped snap ring 3 are butted against each other to form a clamping point and a bolt connection point; a buffer ring 1, having a double-layer fitting part, the inner ring of the buffer ring 1 is for the bicycle sleeve to pass through, and the inner ring of the arc-shaped snap ring contacts the buffer ring 1; along the radial outward direction of the buffer ring 1, the fitting part sequentially comprises a covering section 1b and a tongue section 1c, the covering section 1b is clamped by the clamping point, and the covering section 1b is located at the bolt connection point. The waist-shaped hole comprises a first waist-shaped hole 1d and a second waist-shaped hole 1e which are perpendicularly intersected and fitted to each other, and the overlap of the first waist-shaped hole 1d and the second waist-shaped hole 1e forms a square through hole 1i.

[0035] like Figure 5 As shown in the outline diagram, the outline of the square through hole 1i is a square, the side length of the square through hole 1i is smaller than the diameter of the bolt 4, and the diagonal length of the square through hole 1i is larger than the diameter of the bolt 4.

[0036] The inner ring of the buffer ring 1 is provided with a hollow hole 6 for the bicycle sleeve to pass through. The bolt connection is provided with only one bolt 4.

[0037] The beneficial effect of adopting the above technical solution is that the pipe clamp of the technical solution and the bicycle sleeve can be disassembled and assembled relatively quickly because one end thereof is a clamping structure. The clamping of the bicycle sleeve by the pipe clamp relies on the bolts at the bolt connection. There is also a buffer ring between the arc-shaped snap ring and the bicycle sleeve as a buffer, and the buffer ring can prevent the arc-shaped snap ring from clamping the bicycle sleeve. The buffer ring is limited by the bolt to prevent the buffer ring from falling off. Due to the mutual extrusion between the arc-shaped snap ring and the bicycle sleeve, the thickness and length of the buffer ring itself will undergo elastic deformation, so the waist-shaped hole leaves a margin. When the buffer ring is squeezed and its own length becomes longer and its thickness becomes thinner, the tongue section of the fitting part is properly pulled, and the waist-shaped hole will move outward, but the bolt can still pass through, thereby preventing the buffer ring from being clamped between the arc-shaped snap ring and the bicycle sleeve in a wrinkled state.

[0038] Among them, the first waist-shaped hole and the second waist-shaped hole intersect each other to naturally form a square through hole, which is neither too large nor too small. The relationship between its side length, diagonal length and bolt diameter is limited respectively. The square through hole is large enough to facilitate the passage of the bolt; and small enough, so that a part of the edge of the square through hole is squeezed and deformed by the bolt and radially squeezed outward. Finally, the deformed square through hole can also tightly bite the external thread of the bolt, acting as a gasket. Finally, the bolt has a good tightening effect on the pipe clamp. In addition, the slight offset between the first waist-shaped hole and the second waist-shaped hole will not affect the generation of the square through hole. On the contrary, the size and shape of the square through hole are relatively stable.

[0039] As a further improvement of the present invention, the widths of the first waist-shaped hole 1d and the second waist-shaped hole 1e are equal, and the lengths of the first waist-shaped hole 1d and the second waist-shaped hole 1e are equal; the length direction of the first waist-shaped hole 1d is perpendicular to the length direction of the buffer ring 1, and the length direction of the second waist-shaped hole 1e is parallel to the length direction of the buffer ring 1.

[0040] The beneficial effect of adopting the above technical solution is that the first waist-shaped hole and the second waist-shaped hole are actually uniform in shape and size, which is easy to process.

[0041] As a further improvement of the present invention, the tongue section 1c is located at one end of the buffer ring 1, and the other end of the buffer ring 1 has a first bending section 1g integrally connected to the covering section, and the end of the first bending section 1g away from the covering section 1b is also integrally connected to the second bending section 1h, the first bending section 1g and the second bending section 1h form an L-shaped member, and the second bending section 1h is parallel to the fitting portion; the second bending section 1h has a circular hole 1f, and the circular hole 1f is for the bolt 4 to pass through.

[0042] The beneficial effects of adopting the above technical solution are: the first bending section and the second bending section are formed by the buffer ring being bent by 90 degrees, the L-shaped piece can hook one end of the arc-shaped clamping ring, and the second bending section with a circular hole forms a genuine washer, which plays a stabilizing effect of the washer for the assembly of the bolt. This washer works together with the equivalent washer formed by the two cross waist-shaped holes, which is further conducive to assembly limit.

[0043] As a further improvement of the present invention, along the axial direction of the circular hole 1f, the centroid of the circular hole 1f coincides with the centroid of the waist-shaped hole, and the inner diameter of the circular hole 1f is not less than the diameter of the bolt 4.

[0044] The beneficial effect of adopting the above technical solution is that the inner diameter of the circular hole is relatively large to allow the bolt to pass smoothly. It is different from the square through hole, and the circular hole and the bolt are hardly deformed radially outward when assembled.

[0045] In some other embodiments of the present invention, one end of the first arc-shaped snap ring 2 has a groove 2a, and one end of the second arc-shaped snap ring 3 has a convex hook 3a, and the groove 2a and the convex hook 3a constitute a clamping point; along the cross-section perpendicular to the axis of the buffer ring 1, the cross-sectional contours of the groove 2a and the convex hook 3a coincide with each other.

[0046] The beneficial effect of adopting the above technical solution is that this clamping method is convenient for assembly and disassembly.

[0047] In some other embodiments of the present invention, one end of the first arc-shaped snap ring 2 has a first radial section 2c, one end of the second arc-shaped snap ring 3 has a second radial section 3c, and the first radial section 2c and the second radial section 3c clamp a covering section 1b of the fitting portion; the first semicircular arc section 2b of the first arc-shaped snap ring 2 is between the groove 2a and the first radial section 2c, and the second semicircular arc section 3b of the second arc-shaped snap ring 3 is between the convex hook 3a and the second radial section 3c.

[0048] The beneficial effect of adopting the above technical solution is that the first radial section and the second radial section increase the radial size, so as to have more contact area with the fitting part.

[0049] In some other embodiments of the present invention, the first semicircular arc segment 2 b and the second semicircular arc segment 3 b are provided with a serrated surface 5 in contact with the buffer ring 1 .

[0050] The beneficial effect of adopting the above technical solution is that the serrated surface increases the friction coefficient and prevents the buffer ring from slipping.

[0051] In some other embodiments of the present invention, the first radial segment 2c and the second radial segment 3c are provided with a first through hole 2d and a second through hole 3d, respectively, and the first through hole 2d and the second through hole 3d are provided for a bolt 4 to pass through.

[0052] The beneficial effect of adopting the above technical solution is that the first radial section and the second radial section facilitate the layout of the first through hole and the second through hole.

[0053] In some other embodiments of the present invention, when the buffer ring 1 is not in contact with the bicycle casing, the axes of the first through hole 2d and the second through hole 3d pass through the centroid of the waist-shaped hole.

[0054] The beneficial effect of adopting the above technical solution is that when the buffer ring is not subjected to external forces other than gravity, the waist-shaped hole should leave enough margin to facilitate the front and rear tightness adjustment of the fitting part.

[0055] In some other embodiments of the present invention, the buffer ring 1 is made of rubber, and the first arc-shaped clamping ring 2 and the second arc-shaped clamping ring 3 are cast aluminum.

[0056] The beneficial effect of adopting the above technical solution is that the materials of the buffer ring, the first arc-shaped clamping ring and the second arc-shaped clamping ring are convenient for use in the bicycle field.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe clamp for a bicycle hub and a sleeve, characterized in that: include: The arc-shaped snap ring comprises a first arc-shaped snap ring and a second arc-shaped snap ring, wherein two ends of the first arc-shaped snap ring and the second arc-shaped snap ring are butted against each other to form a snap joint and a bolt joint; The buffer ring has a double-layer fitting portion, and the inner ring of the arc-shaped clamping ring contacts the buffer ring; Along the radial outward direction of the buffer ring, the fitting portion includes a covering section and a tongue section in sequence, the covering section is clamped by the clamping portion, the covering section is located at the bolt connection portion, and the covering section is provided with a waist-shaped hole for the bolt to pass through; The waist-shaped hole includes a first waist-shaped hole and a second waist-shaped hole that are perpendicularly crossed and fitted to each other. The overlapping part of the first waist-shaped hole and the second waist-shaped hole forms a square through hole. The outline of the square through hole is a square. The side length of the square through hole is smaller than the diameter of the bolt, and the diagonal length of the square through hole is greater than the diameter of the bolt.

2. The pipe clamp for bicycle hub and bushing according to claim 1, characterized in that: The first waist-shaped hole and the second waist-shaped hole have the same width, and the first waist-shaped hole and the second waist-shaped hole have the same length; The length direction of the first waist-shaped hole is perpendicular to the length direction of the buffer ring, and the length direction of the second waist-shaped hole is parallel to the length direction of the buffer ring.

3. The pipe clamp for bicycle hub and sleeve according to claim 2, characterized in that: The tongue section is located at one end of the buffer ring, and the other end of the buffer ring is provided with a first bent section integrally connected to the covering section, and the end of the first bent section away from the covering section is also integrally connected to a second bent section, the first bent section and the second bent section form an L-shaped member, and the second bent section is parallel to the fitting portion; The second bending section has a circular hole, and the circular hole is used for the bolt to pass through.

4. The pipe clamp for bicycle hub and bushing according to claim 3, characterized in that: Along the axial direction of the circular hole, the centroid of the circular hole coincides with the centroid of the waist-shaped hole, and the inner diameter of the circular hole is not less than the diameter of the bolt.

5. The pipe clamp for bicycle hub and bushing according to claim 1, characterized in that: One end of the first arc-shaped snap ring is provided with a groove, and one end of the second arc-shaped snap ring is provided with a convex hook, and the groove and the convex hook form a clamping point; along the cross section perpendicular to the axis of the buffer ring, the cross-sectional profiles of the groove and the convex hook are consistent with each other.

6. The pipe clamp for bicycle hub and bushing according to claim 5, characterized in that: One end of the first arc-shaped snap ring has a first radial section, and one end of the second arc-shaped snap ring has a second radial section. The first radial section and the second radial section clamp the covering section of the fitting portion; the first semicircular arc section of the first arc-shaped snap ring is between the groove and the first radial section, and the second semicircular arc section of the second arc-shaped snap ring is between the convex hook and the second radial section.

7. The pipe clamp for a bicycle hub and a sleeve according to claim 6, characterized in that: The first semicircular arc segment and the second semicircular arc segment are provided with serrated surfaces in contact with the buffer ring.

8. The pipe clamp for a bicycle hub and a sleeve according to claim 6, characterized in that: The first radial section and the second radial section are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are used for a bolt to pass through.

9. The pipe clamp for a bicycle hub and a sleeve according to claim 8, characterized in that: When the buffer ring is not in contact with the bicycle sleeve, the axes of the first through hole and the second through hole pass through the centroid of the waist-shaped hole.

10. The pipe clamp for a bicycle hub and a sleeve according to claim 1, characterized in that: The buffer ring is made of rubber, and the first arc-shaped clamping ring and the second arc-shaped clamping ring are cast aluminum.

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