Clamping device for bicycle saddle

Abstract

The invention discloses a clamping device for a bicycle saddle, the clamping device is used for clamping a seat rail of the saddle, the clamping device is characterized by comprising a seat rail clamp assembly and a seat post assembly, the seat post assembly is provided with a mounting ring, and the seat rail clamp assembly is inserted into the mounting ring; the seat rail clamp assembly comprises a jacking mechanism, an adjusting block and a seat rail clamp cover plate. By the adoption of the technical scheme, when the seat rail clamp assembly is used for seat rails of different structural forms, only the adjusting block needs to be replaced, the containing gap can be rapidly matched with and clamp the seat rail, in other words, the seat rail clamp assembly can be rapidly compatible with and adapt to the seat rail by simply replacing the adjusting block no matter an original cushion seat rail or a new standardized seat rail, and the seat rail clamp assembly is convenient to use. The adjustability not only provides a larger degree of freedom for selecting and replacing the seat cushion for a rider, so that the seat cushion can be customized and configured according to personal requirements and preferences, the later accessory replacement cost is lower, and the additional expenditure cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bicycles, and in particular to a clamping device for a bicycle seat cushion. Background Art

[0002] In current bicycle designs, the rail clamp is a very important component that is used to fix the seat to the bicycle frame. However, bicycles of different brands and models usually use different types of seats, and the corresponding seat rail structures of their seats are mostly different. This leads to a problem: the design of existing rail clamps is usually only suitable for specific types of seat rails, which limits consumers' flexibility in choosing bicycle seats. Therefore, there is a limitation in the existing bicycle rail clamps, that is, one rail clamp can only correspond to one type of seat rail structure. When the seat is switched, the rail clamp cannot adapt to different types of rails. This compatibility limitation causes riders to be greatly constrained when choosing and replacing bicycle seats, limiting the flexibility and replaceability of the seat.

[0003] For example, patent No. 202220773278.2 discloses a bicycle with an adjustable seat position, which includes a clamp ring, a first clamp block and a second clamp block, wherein the clamp ring has a locking portion, the first clamp block and the second clamp block are inserted into the clamp ring, and then the locking portion is locked to fix the first clamp block and the second clamp block clamping ring in the clamp ring through the clamp ring to achieve clamping and fixing of the seat rail. The above structure has multiple defects: first, when facing seat rails of different structural forms, when the clamp block cannot be quickly adapted, the entire clamp block can only be replaced, but the replacement cost of the entire clamp block is high, which is not conducive to cost saving; second, the requirements for the mounting ring are high, not only the mounting ring needs to be processed into the structural form of the clamp ring, but also a corresponding locking portion needs to be set on the clamp ring to ensure that the clamp ring has a clamping force under the action of the locking portion, so that the first clamp block and the second clamp block will not fall out, which increases the processing difficulty and is not conducive to improving production efficiency. Summary of the invention

[0004] The present invention provides a clamping device for a bicycle seat cushion, which overcomes the shortcomings of the background art and adopts the following technical solutions:

[0005] The cam assembly is configured to be operable to move the seat rail of the bicycle seat cushion to a position adjacent to the seat rail, the cam assembly comprising a plurality of seat rails, the plurality of seat rails having a plurality of seat rails and a plurality of seat rails having a plurality of seat rails.

[0006] Preferably, the seat rail clamp base has at least one limiting convex, and when the seat rail clamp base is installed in the mounting ring, the limiting convex is mounted on the mounting ring to restrict the displacement of the seat rail clamp base in the left and right directions.

[0007] Preferably, a limiting guide rail is formed on the inner wall of the mounting ring in the circumferential direction, and when the seat rail clamp base is installed in the mounting ring, the limiting clip protrusion is clamped in the limiting guide rail to restrict the displacement of the seat rail clamp base in the left and right directions.

[0008] Preferably, there are two limit clamps, and a limit space is provided between the two limit clamps. The limit space is adapted to the thickness of the mounting ring. When the seat rail clamp base is installed in the mounting ring, the limit space abuts against the inner wall of the mounting ring.

[0009] Preferably, the seat rail clamp base has a load-bearing surface in the form of an arc, and when the seat rail clamp base is installed in the mounting ring, the load-bearing surface abuts against the mounting ring.

[0010] Preferably, the seat rail clamp cover plate and the adjustment block are respectively provided with seat rail contact parts adapted to the seat rail, and when the adjustment block and the seat rail clamp cover plate clamp the seat rail, the adjustment block and the seat rail clamp cover plate clamp the seat rail via the seat rail contact parts.

[0011] Preferably, the seat rail clamp cover plate is provided with a hollow anti-slip groove to prevent the seat rail clamp cover plate from rotating in the mounting ring.

[0012] Preferably, the seat rail clamp cover plate has a penetrating weight-reducing hole.

[0013] Preferably, the seat rail clamp base is provided with reinforcing ribs.

[0014] Preferably, the adjustment block and the rail clamp base are respectively provided with threaded holes.

[0015] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The technical solution of the present invention solves the problem that when the existing bicycle seat is switched, the seat rail clamp cannot adapt to different types of seat rails. This low compatibility causes riders to be greatly restricted when choosing and replacing bicycle seats, limiting the flexibility and replaceability of the seat.

[0017] In the present technical solution, a through portion is formed by threading the adjusting nut through the seat rail clamp base, and the through portion drives the adjusting block to reduce the accommodating gap relative to the seat rail clamp cover to clamp and fix the seat rail. The clamping of the seat rail is mainly provided by the adjusting block and the seat rail clamp cover; therefore, when faced with seat rails of different structural forms, it is only necessary to replace the adjusting block to allow the accommodating gap to quickly adapt to and clamp the seat rail, that is, whether it is the original seat rail or the newer standardized seat rail, simply replacing the adjusting block can make the seat rail clamp assembly quickly compatible and adapt to the seat rail. This adjustability not only provides riders with greater freedom in seat selection and replacement, allowing them to customize the configuration according to personal needs and preferences, but also has a lower cost for subsequent accessory replacement, reducing additional expenditure costs.

[0018] (2) The technical solution of the present invention also solves the problem in the prior art that the mounting ring is difficult to process and affects production efficiency. In the present technical solution, the mounting ring is a simple sleeve ring arranged on the rod. After the seat rail clamp cover and the seat rail clamp base are inserted into the mounting ring, the seat rail clamp cover and the seat rail clamp base will be backed against the mounting ring and will generate opposite tensions under the action of the adjusting nut, so as to respectively abut against the mounting ring, so that the seat rod assembly and the seat rail clamp assembly are fixed as one.

[0019] Therefore, compared with the prior art which requires a clamping ring structure to achieve the restraining and fixing function, the seat rail clamp assembly of this solution can be fixed by itself in the mounting ring, so that the seat rail clamp assembly will not fall out of the mounting ring; it eliminates the structural form of the locking part and the clamping ring, and the processing is simpler and does not require further processing. It is not only convenient for the rapid mass production of the mounting ring, but also greatly reduces the processing difficulty of the mounting ring, and has higher production efficiency.

[0020] (3) As described above, the seat rail clamp base and the seat rail clamp cover plate generate opposite tensions when they are against the mounting ring, so that the two are respectively in contact with the mounting ring, which will restrict the upward and downward displacement of the two. Not only can the seat rail clamp base and the seat rail clamp cover plate not rotate in the mounting ring, but they can also be prevented from falling out of the mounting ring.

[0021] A limiting convex is arranged on the seat rail clamp base. When the seat rail clamp base is installed in the mounting ring, the limiting convex is clamped on the mounting ring to restrict the displacement of the seat rail clamp base in the left and right directions, thereby realizing all-round fixed constraint restriction of the seat rail clamp base and the seat rail clamp cover plate, further preventing the seat rail clamp base and the seat rail clamp cover plate from falling off the mounting ring, ensuring the stability of the seat cushion, and improving the safety of the rider.

[0022] (4) A limit guide rail is formed on the inner wall of the mounting ring in the circumferential direction. When the rider adjusts the inclination angle of the mounting pad, the seat rail clamp base rotates accordingly. Then, the limit latch on the seat rail clamp base can still be clamped in the limit guide rail and rotate along the limit guide rail. The left and right sides will still be constrained.

[0023] (5) The seat rail clamp base has a load-bearing surface in the shape of an arc. When the seat rail clamp base is installed in the mounting ring, the load-bearing surface abuts against the mounting ring, so that the rider can adjust the inclination angle of the seat cushion by rotating the load-bearing surface around the axis of the mounting hole, thereby improving the comfort of the seat cushion.

[0024] (6) The seat rail clamping cover plate and the adjustment block are respectively provided with a seat rail contact portion adapted to the seat rail. When the adjustment block and the seat rail clamping cover plate clamp the seat rail, the seat rail contact portion will clamp the seat rail. In the actual production process, the seat rail contact portion can be designed with a variety of structural forms according to different seat cushions on the market for users to choose.

[0025] (7) The seat rail clamp cover is provided with a hollow anti-skid groove, which can increase the friction between the mounting ring and the seat rail clamp cover to prevent the seat rail clamp cover from rotating in the mounting ring. When the corresponding seat rail clamp cover cannot rotate, the seat rail clamp assembly as a whole cannot rotate. Then, when the seat rail is clamped, it can prevent the seat rail clamp assembly from rotating and sliding in the seat post assembly, thereby increasing safety during riding. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0028] Figure 2 The overall structure of the seat rail clamp assembly of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 3 The overall structure of the seat rail clamp assembly of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 4 It is a schematic diagram of the assembly of the seat rail clamp assembly and the seat post assembly according to the first embodiment of the present invention;

[0031] Figure 5 The structure of the seat rail clamp assembly of the first embodiment of the present invention when clamping and fixing the seat rail is shown in FIG. Figure 1 ;

[0032] Figure 6 for Figure 5 An enlarged view of the structure of part A shown;

[0033] Figure 7 The structure of the seat rail clamp assembly of the first embodiment of the present invention when clamping and fixing the seat rail is shown in FIG. Figure 2 ;

[0034] Figure 8 It is a schematic diagram of the structure of the seat rail clamp cover plate and the seat rail clamp base clamping the seat rail in other embodiments;

[0035] Fig. 9 It is a schematic diagram of the structure of the seat rail clamp cover plate and the seat rail clamp base clamping the seat rail in other embodiments;

[0036] Fig.10 It is a schematic structural diagram of the seat rail clamp assembly and the seat post assembly in the second embodiment.

[0037] The description of the accompanying drawings is as follows: 1. Seat rail clamp assembly; 11. Lifting mechanism; 111. Adjusting nut; 112. Seat rail clamp base; 112a. Reinforcing rib; 12. Adjusting block; 12a. Seat rail contact portion; 13. Seat rail clamp cover plate; 13a. Seat rail contact portion; 13b. Hollow anti-slip groove; 13c. Weight reduction hole; 2. Seat rod assembly; 21. Mounting ring; B. Through-hole; C. Load-bearing surface; 3. Seat rail; 4. Limiting cam; 5. Limiting guide rail. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0040] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0041] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0042] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0043] See also Figures 1 to 9 .

[0044] Embodiment 1

[0045] This embodiment provides a clamping device for a bicycle seat cushion, which is used to clamp the seat rail 3 on the existing seat cushion to fix the seat cushion on the bicycle for the rider to ride on; see Figure 1 It includes: a seat rail clamp assembly 1 and a seat rod assembly 2, the seat rod assembly 2 has a mounting ring 21, the mounting ring 21 has a through hole for the seat rail clamp assembly 1 to pass through, and the seat rail clamp assembly 1 is inserted into the through hole of the mounting ring 21.

[0046] See also Figures 1 to 6In this embodiment, the seat rail clamp assembly 1 includes a lifting mechanism 11, an adjustment block 12 and a seat rail clamp cover plate 13, and an accommodation gap is provided between the adjustment block 12 and the seat rail clamp cover plate 13 for constraining the seat rail 3; the lifting mechanism 11 includes an adjusting nut 111 and a seat rail clamp base 112, and the seat rail clamp base 112 has a threaded hole, and the adjusting nut 111 passes through the threaded hole and is screwed to the seat rail clamp base 112 to form a penetrating portion B, and the penetrating portion B drives the adjustment block 12 to reduce the accommodation gap relative to the seat rail clamp cover plate 13 to clamp and fix the seat rail 3.

[0047] See also Figure 6 The seat rail 3 is an "axis type" with a small axis diameter. The adjusting nut 111 penetrates and is threaded on the seat rail clamp base 112. The inserted through portion B drives the adjusting block 12 upward, so that the adjusting block 12 is close to the seat rail clamp cover 13 to reduce the accommodation gap, and drives the seat rail 3 to abut against the seat rail clamp cover 13 for fixing.

[0048] See also Figure 7 The seat rail 3 can also be an "axis type" with a larger axis diameter. Similarly, the adjusting nut 111 is threaded through the seat rail clamp base 112, and the part that passes through is relatively Figure 6 The through portion B is relatively small, which also enables the adjustment block 12 to approach the seat rail clamp cover plate 13 to reduce the accommodation gap, thereby driving the seat rail 3 to abut against the seat rail clamp cover plate 13 for fixation.

[0049] See also Figure 8 , the seat rail 3 can also be an "axle type", and its axle diameter is Figure 6 and Figure 7 The seat rail 3 shown has a smaller shaft diameter, which mainly corresponds to the seat cushion with a small shaft diameter on the market, which needs to replace a smaller adjustment block 12 to adapt to the seat rail 3; similarly, see Fig. 9 , the seat rail 3 is a "rectangular" shape, and it is also necessary to replace the adjustment block 12 of different sizes and shapes to adapt to the seat rail 3. Therefore, see Figures 6 to 9 When faced with seat rails 3 of different structural forms (such as different shaft diameters and shapes), it is only necessary to replace the adjustment block 12 to allow the accommodating gap to quickly adapt and clamp the seat rail 3, that is, whether it is the original seat rail 3 or the newer standardized seat rail 3, simply replacing the adjustment block 12 can make the seat rail clamp assembly 1 quickly compatible and adapt to the seat rail 3. This adjustability not only provides riders with greater freedom in seat selection and replacement, allowing them to customize the configuration according to personal needs and preferences, but also has a lower cost for subsequent accessory replacement, reducing additional expenditure costs.

[0050] See also Figure 6 and Figure 7In this embodiment, the mounting ring 21 is a simple sleeve ring arranged on the rod. After the seat rail clamp cover 13 and the seat rail clamp base 112 are inserted into the mounting ring 21, under the action of the upward lifting of the adjusting nut 111, the seat rail clamp cover 13 and the seat rail clamp base 112 will generate opposite tensions against the mounting ring 21, and through this tension, they respectively abut against the mounting ring 21, so that the seat rod assembly 2 and the seat rail clamp assembly 1 are fixed as a whole, preventing the entire seat rail clamp assembly 1 from rotating in the seat rail 3 assembly.

[0051] See also Figure 6 and Figure 7 In this embodiment, two limit clamping protrusions 4 are provided on the seat rail clamp base 112. When the seat rail clamp base 112 is installed in the mounting ring 21, the limit clamping protrusions 4 are clamped on the mounting ring 21 to restrict the displacement of the seat rail clamp base 112 in the left and right directions, thereby realizing all-round fixed constraint restriction of the seat rail clamp base 112 and the seat rail clamp cover 13, and further preventing the seat rail clamp base 112 and the seat rail clamp cover 13 from escaping from the mounting ring 21.

[0052] See also Figure 6 and Figure 7 In this embodiment, there is a limiting space between the two limiting protrusions 4, and the limiting space is just matched with the thickness of the mounting ring 21. When the seat rail clamp base 112 is installed in the mounting ring 21, the limiting space just abuts against the inner wall of the mounting ring 21, and the two limiting protrusions 4 are also just clamped on both sides of the mounting ring 21, which limits the displacement of the seat rail clamp base 112 in the left and right directions; when the seat rail clamp base 112 is to be taken down, the seat rail clamp base 112 can be detached from the mounting ring 21 by lifting the seat rail clamp base 112 upward in the mounting ring 21 so that the two limiting protrusions 4 are away from the mounting ring 21.

[0053] In this embodiment, the seat rail clamp base 112 has a load-bearing surface C in the form of an "arc", and the load-bearing surface C is the surface on the limited space. When the seat rail clamp base 112 is installed in the mounting ring 21, the load-bearing surface C abuts against the mounting ring 21, and the seat rail clamp assembly 1 can rotate around the through-hole axis of the mounting hole through the load-bearing surface C.

[0054] As described above, when facing the seat rails 3 of different structural forms (such as different shaft diameters and shapes), it is only necessary to replace the adjustment block 12 to allow the accommodating gap to quickly adapt and clamp the seat rail 3.

[0055] See also Figure 7The seat rail clamping cover plate 13 and the adjustment block 12 are respectively provided with seat rail contact parts 12a and 13a adapted to the seat rail 3. The purpose of replacing different adjustment blocks 12 is mainly to allow different seat rail contact parts 12a to adapt to the seat rail 3. When the adjustment block 12 and the seat rail clamping cover plate 13 clamp the seat rail 3, the seat rail contact part 12a of the adjustment block 12 will limit and support the seat rail 3, so that the seat rail 3 will not move left and right. The seat rail contact part 13a of the seat rail clamping cover plate 13 (the seat rail clamping cover plate 13 adapted to the seat rail 3 can also be replaced according to the selection) is mainly used to limit the seat rail 3 upward to prevent the seat rail 3 from contacting the upper inner wall of the mounting ring 21 (if the adapted seat rail clamping cover plate 13 is replaced, the clamping force will be stronger and the seat rail 3 can be prevented from falling out); therefore, in the actual production process, the seat rail contact parts 12a and 13a can be designed with a variety of structural forms according to different seat cushions on the market for users to choose.

[0056] According to the above-mentioned knowledge: after the seat rail clamp cover 13 and the seat rail clamp base 112 are inserted into the mounting ring 21, under the upward lifting action of the adjusting nut 111, the seat rail clamp cover 13 and the seat rail clamp base 112 constrain the upper and lower displacements of the entire seat rail clamp assembly 1 through opposite tensions, so that the entire seat rail clamp assembly 1 will not be detached from the seat rail 3 assembly.

[0057] See also Figure 1 and Figure 2 In this embodiment, the rail clamp cover 13 is provided with a hollow anti-skid groove 13b, the rail clamp cover and the rail clamp base 112 are inserted into the mounting ring 21, and both are subjected to tension. If the rail clamp cover 13 is subjected to a torsional force and is about to rotate in the mounting ring 21, the hollow anti-skid groove 13b will cause the inner wall of the mounting ring 21 and the rail clamp cover 13 to generate friction, thereby preventing the rail clamp cover 13 from rotating in the mounting ring 21. Correspondingly, when the rail clamp cover 13 cannot rotate, the rail clamp assembly 1 as a whole cannot rotate either. Therefore, when the seat rail 3 is clamped, it can prevent the rail clamp assembly 1 from rotating and sliding in the seat post assembly 2.

[0058] See also Figure 1 and Figure 2 In this embodiment, the seat rail clamp cover plate 13 has a penetrating weight-reducing hole 13c, and its main function is to reduce the overall weight and achieve the purpose of lightweight.

[0059] See also Figure 2 In this embodiment, a reinforcing rib 112a feature is provided on the seat rail clamp base 112, and its function is to provide additional strength for the two threaded hole feature parts, thereby improving the installation strength and safety of the seat rail clamp assembly 1 and the seat post assembly 2.

[0060] In this embodiment, the seat rail clamp base 112 is provided with a threaded hole feature for the adjustment nut 111 to penetrate and be screwed to form a through portion B; and the adjustment block 12 can also be provided with a threaded hole feature for the through portion B to be screwed to the adjustment block 12, so that the installation strength between the adjustment block 12 and the seat rail clamp base 112 is higher.

[0061] The working principle and use process of the present invention:

[0062] When the rider is installing the seat cushion, first, insert the seat rail clamp base 112 into the mounting ring 21, so that the limit space just matches the mounting ring 21, and the two limit clamping protrusions 4 are against the two sides of the mounting ring 21; then, the adjustment is placed above the seat rail clamp base 112, so that the threaded holes of the two correspond to each other; then, the seat rail clamp cover plate 13 is also inserted into the mounting ring 21 and built into the adjustment block 12, so that the seat rail contact parts 12a and 13a of the seat rail clamp cover plate 13 and the adjustment block 12 correspond to each other; finally, the seat cushion seat rail 3 can be installed in the accommodation space between the adjustment block 12 and the seat rail clamp cover plate 13, and then the adjustment nut 111 is screwed to the seat rail clamp base 112, so that the adjustment block 12 is driven to reduce the accommodation space relative to the seat rail clamp cover plate 13, and the seat rail 3 is clamped. When a different seat cushion needs to be replaced, only the adjustment block 12 needs to be replaced, and the seat cushion can also be fixed on the bicycle in the same installation method. The present invention, when faced with seat rails 3 of different structural forms, only needs to replace the adjustment block 12 to allow the accommodating gap to quickly adapt to and clamp the seat rail 3, that is, whether it is the original seat rail 3 or the newer standardized seat rail 3, simply replacing the adjustment block 12 can make the seat rail clamp assembly 1 quickly compatible and adapt to the seat rail 3. This adjustability not only provides the rider with greater freedom in seat selection and replacement, allowing him to customize the configuration according to personal needs and preferences, but also has a low cost for subsequent accessory replacement, reducing additional expenditure costs.

[0063] Second embodiment

[0064] See also Fig.10 The difference between this embodiment and the first embodiment is that there is only one limit cam 4 at the bottom of the seat rail clamp base 112, and the inner wall surface of the mounting ring 21 is provided with a limit guide rail 5, and the limit guide rail 5 is used to install and fix the limit cam 4. This structure eliminates the need for two limit cams 4, further reduces the difficulty of processing, and the corresponding cost can also be relatively small.

[0065] In this embodiment, a limiting guide rail 5 is formed on the inner wall of the mounting ring 21 in the circumferential direction. When the rider adjusts the inclination angle of the mounting pad, the seat rail clamp base 112 rotates accordingly. Then, the limiting latch 4 on the seat rail clamp base 112 can still be clamped in the limiting guide rail 5 and rotate along the limiting guide rail 5 in a circle, and its left and right sides will still be constrained and restricted.

[0066] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A clamping device for a bicycle seat, the clamping device is used to clamp the seat rail of the seat, characterized in that: It comprises a seat rail clamp assembly and a seat rod assembly, wherein the seat rod assembly has a mounting ring, and the seat rail clamp assembly is inserted into the mounting ring; The seat rail clamp assembly comprises a lifting mechanism, an adjustment block and a seat rail clamp cover plate, and an accommodation gap for constraining the seat rail is provided between the adjustment block and the seat rail clamp cover plate; The lifting mechanism comprises an adjusting nut and a seat rail clamp base, wherein the adjusting nut penetrates and is screwed to the seat rail clamp base to form a penetrating portion, and the penetrating portion drives the adjusting block to reduce the accommodation gap relative to the seat rail clamp cover plate to clamp and fix the seat rail; When the adjusting block and the seat rail clamp cover plate clamp the seat rail, the seat rail clamp cover plate and the seat rail clamp base are backed against the mounting ring to generate opposite tensions to abut against the mounting ring respectively, so that the seat rod assembly and the seat rail clamp assembly are fixed as one.

2. A clamping device for a bicycle seat as claimed in claim 1, characterized in that: The seat rail clamp base has at least one limiting convex. When the seat rail clamp base is installed in the mounting ring, the limiting convex is mounted on the mounting ring to restrict the displacement of the seat rail clamp base in the left and right directions.

3. A clamping device for a bicycle seat as claimed in claim 2, characterized in that: The inner wall of the mounting ring is formed with a limiting guide rail in the circumferential direction. When the seat rail clamp base is installed in the mounting ring, the limiting clamp protrusion is clamped in the limiting guide rail to restrict the displacement of the seat rail clamp base in the left and right directions.

4. A clamping device for a bicycle seat as claimed in claim 2, characterized in that: There are two limit cams, and a limit space is provided between the two limit cams. The limit space is adapted to the thickness of the mounting ring. When the rail clamp base is installed in the mounting ring, the limit space abuts against the inner wall of the mounting ring.

5. A clamping device for a bicycle seat as claimed in any one of claims 1 to 5, characterized in that: The seat rail clamp base has a load-bearing surface in the shape of an "arc". When the seat rail clamp base is installed in the mounting ring, the load-bearing surface abuts against the mounting ring.

6. A clamping device for a bicycle seat as claimed in claim 5, characterized in that: The seat rail clamp cover plate and the adjustment block are respectively provided with seat rail contact parts adapted to the seat rail. When the adjustment block and the seat rail clamp cover plate clamp the seat rail, the adjustment block and the seat rail clamp cover plate clamp the seat rail through the seat rail contact parts.

7. A clamping device for a bicycle seat as claimed in claim 5, characterized in that: The seat rail clamp cover plate is provided with a hollow anti-skid groove to prevent the seat rail clamp cover plate from rotating in the mounting ring.

8. A clamping device for a bicycle seat as claimed in claim 1, characterized in that: The seat rail clamp cover plate has a penetrating weight-reducing hole.

9. A clamping device for a bicycle seat as claimed in claim 1, characterized in that: The seat rail clamp base is provided with reinforcing ribs.

10. A clamping device for a bicycle seat as claimed in claim 5, characterized in that: The adjusting block and the seat rail clamp base are respectively provided with threaded holes.

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