A clamp assembly for securing a seat post of a bicycle

Abstract

The utility model provides a pressing assembly for bicycle seat rod fixed, relate to bicycle technical field, including casing, seat rod, first pressing block and second pressing block, be provided with tubular first containing groove and second containing groove in casing, first containing groove and second containing groove intercommunication, seat rod slides fixed along the tubular extension direction of first containing groove, first pressing block and second pressing block pass through bolt connection between, first pressing block and second pressing block can change distance through rotating bolt, first pressing block, second pressing block all set up in second containing groove, be provided with operating hole on second containing groove, the head of bolt is toward operating hole, first pressing block slide fixed in second containing groove, and the sliding direction is parallel to the extension direction of bolt, the aperture of operating hole is less than the size of second pressing block, the utility model solves the problem that the pressing block is easy to be affected because of thread hole deformation and influences the pressing effect in prior art, can exert stable pressing effect to seat rod.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a clamping assembly for fixing bicycle seatposts. Background Technology

[0002] To make bicycles suitable for people of different heights, the seat height of bicycles is usually adjustable. The conventional adjustment method is that a seat post is connected to the underside of the seat, and the seat post is slidably fixed inside a telescopic tube. The seat height is adjusted by sliding the seat post inside the telescopic tube.

[0003] After the seat rod slides relative to the telescopic tube, the position of the seat rod and the telescopic tube needs to be fixed. There are many ways to fix the seat rod and the telescopic tube. One way is to set a clamping block on the inner wall of the telescopic tube and use the clamping block to press the seat rod against the inner wall of the telescopic tube.

[0004] In the prior art, for the above-mentioned fixing method, a threaded hole is usually directly opened on the telescopic tube, the bolt is inserted into the threaded hole, and a tightening block is set at the end of the bolt. The distance between the tightening block and the seat rod is adjusted by rotating the bolt. After the tightening block presses against the seat rod, static friction is formed between the seat rod and the inner wall of the telescopic tube, thereby achieving the fastening of the seat rod.

[0005] However, the above structure relies on the connection between the bolt and the threaded hole on the telescopic tube. The threaded hole applies a compressive force perpendicular to the bolt axis to the bolt thread, thereby causing the clamping block at the end of the bolt to press against the side wall of the seat post. However, the threaded hole is prone to deformation after long-term use. For example, when a bicycle is riding on a bumpy road, the seat post applies a frictional force perpendicular to the bolt axis to the clamping block. The bolt connected to the clamping block will continuously apply a compressive force perpendicular to the threaded hole axis, forcing the threaded hole to deform. After the threaded hole deforms, the bolt may have difficulty moving within the threaded hole or may loosen within the threaded hole. Furthermore, the axial direction of the bolt may change due to the deformation of the threaded hole. During subsequent adjustments, this may cause the pressing surface of the clamping block against the seat post to change, and affect the clamping effect of the clamping block on the seat post. Utility Model Content

[0006] To address the aforementioned technical problems, the clamping assembly for fixing bicycle seatposts provided by this utility model can apply a stable clamping effect to the retracted seatpost.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a clamping assembly for fixing a bicycle seat post, comprising a housing, a seat post, a first clamping block, and a second clamping block. The housing contains a tubular first receiving groove and a second receiving groove. The first receiving groove communicates with the second receiving groove. The seat post is slidably fixed along the tubular extension direction of the first receiving groove. The first clamping block and the second clamping block are connected by bolts. The distance between the first clamping block and the second clamping block can be changed by rotating the bolts. The first clamping block is disposed within the second receiving groove. The second clamping block is disposed within the second receiving groove. An operating hole is provided on the second receiving groove. The head of the bolt faces the operating hole. The first clamping block is slidably fixed within the second receiving groove. The sliding direction of the first clamping block is parallel to the extension direction of the bolt. The first clamping block has a first pressing surface facing the first receiving groove. The first pressing surface extends along the tubular extension direction of the first receiving groove. The diameter of the operating hole is smaller than the size of the second clamping block.

[0009] The clamping assembly for fixing a bicycle seat post provided by this utility model preferably has the second receiving groove being funnel-shaped; the operating hole being the small opening of the funnel of the second receiving groove; and the second clamping block having an outer wall structure with the same shape as the inner wall of the small opening of the funnel of the second receiving groove.

[0010] The clamping assembly for fixing a bicycle seat post provided by this utility model preferably includes a threaded hole on the second clamping block; a bolt is fitted and fixed in the threaded hole; a push block is fixed to the end of the bolt; a push hole is formed on the first clamping block; the push block includes a push head and a push rod; the push head and the end of the bolt are respectively disposed on both sides of the push hole; the size of the push hole is smaller than the size of the bolt end; the size of the push hole is smaller than the size of the push head; and the push rod is clearance fitted in the push hole.

[0011] The clamping assembly for fixing a bicycle seat post provided by this utility model preferably has a groove on the second clamping block; the extending direction of the groove is parallel to the extending direction of the threaded hole; a slider is fixed on the first clamping block; the slider is slidably fixed in the groove.

[0012] The clamping assembly for fixing a bicycle seat post provided by this utility model preferably has a reverse thrust groove on the first clamping block to accommodate the reverse thrust head.

[0013] The clamping assembly for fixing a bicycle seat post provided by this utility model preferably includes a first clamping block and a second clamping block that can be disengaged from the second receiving groove at the connection between the first receiving groove and the second receiving groove; and a first clamping block and a second clamping block that can be disengaged from the tubular space of the first receiving groove.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] This utility model provides a clamping assembly for fixing a bicycle seatpost, relating to the field of bicycle technology. It includes a housing, a seatpost, a first clamping block, and a second clamping block. The housing has a tubular first receiving groove and a second receiving groove. The first receiving groove communicates with the second receiving groove. The seatpost is slidably fixed along the tubular extension direction of the first receiving groove. The first clamping block and the second clamping block are connected by bolts. The distance between the first clamping block and the second clamping block can be changed by rotating the bolts. The first clamping block is disposed within the second receiving groove. The second clamping block is disposed within the second receiving groove. An operating hole is provided on the second receiving groove. The head of the bolt faces the operating hole. The first clamping block is slidably fixed within the second receiving groove. The sliding direction of the first clamping block is parallel to the extension direction of the bolt. The first clamping block has a first pressing surface facing the first receiving groove. The first pressing surface extends along the tubular extension direction of the first receiving groove. The diameter of the operating hole is smaller than the size of the second clamping block. The clamping assembly for fixing bicycle seatposts provided by this utility model solves the problem in the prior art that the clamping effect of the seatpost fixing clamping block is easily affected by the deformation of the threaded hole, and can apply a stable clamping effect to the seatpost after extension and retraction. Attached Figure Description

[0016] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0017] Fig. 1 This is a schematic diagram of the overall structure of the clamping assembly for fixing a bicycle seat post provided in Embodiment 1 of this utility model.

[0018] Fig. 2 This is a schematic diagram showing the positional relationship between the first and second receiving grooves of the clamping assembly for fixing a bicycle seat post provided in Embodiment 1 of this utility model.

[0019] Fig. 3This is a cross-sectional structural diagram showing the connection relationship between the first clamping block and the second clamping block of the clamping assembly for fixing a bicycle seat post provided in Embodiment 1 of this utility model.

[0020] Fig. 4 This is a schematic diagram showing the position of the clamping assembly for fixing a bicycle seat post provided in Embodiment 1 of this utility model on the bicycle frame. Detailed Implementation

[0021] Example 1:

[0022] The clamping assembly for fixing a bicycle seatpost provided in Embodiment 1 of this utility model, such as Figs. 1 to 4 As shown, the device includes a housing 1, a seat rod 2, a first clamping block 3, and a second clamping block 4. The housing 1 contains a tubular first receiving groove 11 and a second receiving groove 12. The first receiving groove 11 and the second receiving groove 12 are connected. The seat rod 2 is slidably fixed along the tubular extension direction of the first receiving groove 11. The first clamping block 3 and the second clamping block 4 are connected by bolts 5. The relative distance between the first clamping block 3 and the second clamping block 4 can be changed by rotating the bolts 5. The first clamping block 3 is disposed within the second receiving groove 12. The second clamping block 4 is disposed within the second receiving groove 12. An operating hole 121 is provided on the second receiving groove 12. The head of the bolt 5 faces the operating hole 121. The first clamping block 3 is slidably fixed within the second receiving groove 12. The sliding direction of the first clamping block 3 is parallel to the extension direction of the bolt 5. The first clamping block 3 has a first pressing surface 31 facing the first receiving groove 11, extending along the tubular extension direction of the first receiving groove 11. The diameter of the operating hole 121 is smaller than the size of the second clamping block 4.

[0023] The clamping assembly for fixing the bicycle seatpost provided in this embodiment is used as a structural component of the bicycle as a whole during actual operation. Existing bicycles have a first receiving groove 11 and a seatpost 2, with a seat positioned above the seatpost 2. The method of movement of the seatpost 2 relative to the first receiving groove 11 is existing technology and will not be elaborated here. The structure provided in this embodiment achieves the fixation of the seatpost 2 within the first receiving groove 11 after the seatpost 2 has moved relative to the first receiving groove 11. Specifically, the operator fixes the seatpost 2 by passing a tool through the operating hole 121 and inserting... Insert the bolt 5 into the head, rotate the bolt 5 to change the distance between the first clamping block 3 and the second clamping block 4. When the distance between the first clamping block 3 and the second clamping block 4 reaches its maximum, the first pressing surface 31 of the first clamping block 3 presses against the seat rod 2, thereby increasing the static friction between the seat rod 2 and the first clamping block 3, thus restricting the movement of the seat rod 2 relative to the first clamping block 3. While rotating the bolt 5 so that the first clamping block 3 presses against the seat rod 2, the second clamping block 4 presses against the inner wall of the second receiving groove 12. Since the diameter of the operating hole 121 is smaller than the size of the second clamping block 4, The second clamping block 4 cannot directly detach from the second receiving groove 12 from the operating hole 121. The relative fixation of the bolt 5 is achieved by the friction generated by the compression between the second clamping block 4 and the inner wall of the second receiving groove 12. Compared with the existing technology that directly passes the bolt through the threaded hole on the housing, this embodiment has the structure "the first clamping block 3 is slidably fixed in the second receiving groove 12; the sliding direction of the first clamping block 3 is parallel to the extension direction of the bolt 5". Therefore, the first clamping block 3 is restricted to sliding in the second receiving groove 12. When the seat rod is pressed against the first clamping block 4, the bolt 5 is relatively fixed. When block 3 applies a lateral force perpendicular to the extension direction of bolt 5, the first clamping block 3 transmits this force to the inner wall of the second receiving groove 12 instead of applying it directly to bolt 5 and the threaded hole through which bolt 5 passes. Therefore, the bolt will reduce the pressure applied directly to the threaded hole, thereby reducing the deformation of the threaded hole. This ensures the rotational stability of bolt 5 in the threaded hole (i.e., the threaded hole 41 on the second clamping block 4 in this application, which is described in detail below) and ensures the stability of the axial direction of bolt 5, ensuring that the first pressing surface 31 of the first clamping block 3 can move directly opposite the seat rod 2.

[0024] The clamping assembly for fixing bicycle seatposts provided in Embodiment 1 of this utility model solves the problem in the prior art that the clamping block for fixing seatposts is easily affected by the deformation of the threaded hole, thus affecting the clamping effect. It can apply a stable clamping effect to the seatpost after it has been extended or retracted.

[0025] To ensure the stable position of the second clamping block 4 when pressed against the inner wall of the second receiving groove 12, as a preferred embodiment, the second receiving groove 12 is funnel-shaped; the operating hole 121 is the small opening of the funnel 12; the second clamping block 4 has an outer wall structure with the same shape as the inner wall of the small opening of the second receiving groove 12; the outer wall structure of the second clamping block 4 matching the second receiving groove 12 is positioned directly opposite the small opening of the second receiving groove 12. The funnel shape of the second receiving groove 12 and the matching outer wall structure of the second clamping block 4 allow the second clamping block 4 to automatically correct its position as it presses against the second receiving groove 12, ensuring that the head of the bolt 5 on the second clamping block 4 is directly opposite the operating hole 121.

[0026] To specifically achieve the change in distance between the first clamping block 3 and the second clamping block 4, as a preferred structure in this embodiment, the second clamping block 4 is provided with a threaded hole 41; a bolt 5 is fitted and fixed in the threaded hole 41; a push block 6 is fixed to the end of the bolt 5; a push hole 31 is provided on the first clamping block 3; the push block 6 includes a push head 61 and a push rod 62; the push head 61 and the end of the bolt 5 are respectively provided on both sides of the push hole 31; the size of the push hole 31 is smaller than the size of the end of the bolt 5; the size of the push hole 31 is smaller than the size of the push head 61; the push rod 62 is fitted with a clearance fit in the push hole 31; and a push groove 33 is provided on the first clamping block 3 to accommodate the push head 61. When the bolt 5 is rotated, the second clamping block 4 moves axially due to the engagement of the threaded hole 41 with the bolt 5. At the same time, the push block 6 pushes the first clamping block 3 to move synchronously, reducing the distance between the two and jointly squeezing the seat rod 2 to achieve fixation. The push head 61 and the end of the bolt 5 form a dumbbell-shaped limiting structure. The size of the push hole 31 is between the two. When the bolt 5 rotates and tends to loosen the first clamping block 3 and the second clamping block 4, the push head 61 abuts against the edge of the push hole 31 to prevent the bolt 5 from completely retracting, ensuring the integrity of the overall structure (the overall structure is the structure in which the bolt 5 simultaneously connects the first clamping block 3 and the second clamping block 4). The push head 61 is embedded in the push groove 33 to avoid the push head 61 contacting the seat rod 2 first after the bolt 5 rotates. Instead, the larger structural surface of the first clamping block 3, namely the first pressing surface 31, contacts the seat rod 2, reducing local pressure and preventing the push head 61 from damaging the seat rod 2 due to high stress.

[0027] As a preferred embodiment, in this embodiment, the second clamping block 4 is provided with a groove 42; the extending direction of the groove 42 is parallel to the extending direction of the threaded hole 41; a slider 32 is fixed on the first clamping block 3; the slider 32 is slidably fixed in the groove 42. The groove 42 of the second clamping block 4 is parallel to the extending direction of the threaded hole 41, and the slider 32 of the first clamping block 3 is embedded in the groove 42 to form a guide structure. When the bolt 5 pushes the first clamping block 3 to move, the slider 32 slides in the groove 42, forcing the first clamping block 3 to move along the axis of the bolt 5, avoiding the first clamping block 3 from tilting or shifting due to uneven force, which would affect the squeezing effect of the first clamping block 3 on the seat rod 2.

[0028] In this embodiment, the first clamping block 3 and the second clamping block 4 can disengage from the second receiving groove 12 at the connection between the first receiving groove 11 and the second receiving groove 12; the first clamping block 3 and the second clamping block 4 can move from the tubular space of the first receiving groove 11 to the opening and disengage from the first receiving groove 11. After the structure provided in this embodiment is worn out after long-term use (for example, the threaded hole 41 on the second clamping block 4 is worn), the first clamping block 3 and the second clamping block 4 can be replaced by first pulling the seat rod 2 out of the first receiving groove 11, then moving the first clamping block 3 and the second clamping block 4 from the second receiving groove 12 into the first receiving groove 11, and finally pulling them out of the first receiving groove 11. This does not require replacing the entire first receiving groove 11 (the existing threaded hole is opened on the first receiving groove, and the first receiving groove serves as a structure that accommodates the seat rod and restricts the vertical movement of the seat rod, which is large in size and expensive); thus saving costs.

[0029] In summary, this utility model provides a clamping assembly for fixing a bicycle seatpost, relating to the field of bicycle technology. It includes a housing, a seatpost, a first clamping block, and a second clamping block. The housing contains a tubular first receiving groove and a second receiving groove. The first receiving groove communicates with the second receiving groove. The seatpost is slidably fixed along the tubular extension direction of the first receiving groove. The first clamping block and the second clamping block are connected by bolts. The distance between the first clamping block and the second clamping block can be changed by rotating the bolts. The first clamping block is disposed within the second receiving groove. The second clamping block is disposed within the second receiving groove. An operating hole is provided on the second receiving groove. The head of the bolt faces the operating hole. The first clamping block is slidably fixed within the second receiving groove. The sliding direction of the first clamping block is parallel to the extension direction of the bolt. The first clamping block has a first pressing surface facing the first receiving groove. The first pressing surface extends along the tubular extension direction of the first receiving groove. The diameter of the operating hole is smaller than the size of the second clamping block. The clamping assembly for fixing bicycle seatposts provided by this utility model solves the problem in the prior art that the clamping effect of the seatpost fixing clamping block is easily affected by the deformation of the threaded hole, and can apply a stable clamping effect to the seatpost after extension and retraction.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A clamping assembly for fixing a bicycle seatpost, characterized in that, Includes housing, seat rod, first clamping block and second clamping block; The housing is provided with a tubular first receiving groove and a second receiving groove. The first receiving groove is connected to the second receiving groove; The seat rod is slidably fixed along the tubular extension direction of the first receiving groove; The first clamping block and the second clamping block are connected by bolts; the distance between the first clamping block and the second clamping block can be changed by rotating the bolts; the first clamping block is disposed in the second receiving groove; the second clamping block is disposed in the second receiving groove; an operating hole is provided on the second receiving groove; the head of the bolt faces the operating hole; The first clamping block is slidably fixed in the second receiving groove; the sliding direction of the first clamping block is parallel to the extension direction of the bolt; the first clamping block is provided with a first pressing surface facing the first receiving groove; the first pressing surface extends along the tubular extension direction of the first receiving groove; The diameter of the operating hole is smaller than the size of the second clamping block.

2. The clamping assembly for fixing a bicycle seatpost as described in claim 1, characterized in that, The second receiving groove is funnel-shaped; the operating hole is the small opening of the funnel of the second receiving groove; the second clamping block has an outer wall structure with the same shape as the inner wall of the small opening of the second receiving groove.

3. The clamping assembly for fixing a bicycle seatpost as described in claim 1, characterized in that, The second clamping block is provided with a threaded hole; the bolt is fitted and fixed in the threaded hole; A push block is fixed to the end of the bolt; a push hole is provided on the first clamping block; The thrust block includes a thrust head and a thrust rod; the thrust head and the bolt end are respectively disposed on both sides of the thrust hole; the size of the thrust hole is smaller than the size of the bolt end; the size of the thrust hole is smaller than the size of the thrust head; the thrust rod is clearance-fitted into the thrust hole.

4. The clamping assembly for fixing a bicycle seatpost as described in claim 3, characterized in that, The second clamping block is provided with a sliding groove; the extending direction of the sliding groove is parallel to the extending direction of the threaded hole; A slider is fixed on the first clamping block; the slider is slidably fixed in the groove.

5. The clamping assembly for fixing a bicycle seatpost as described in claim 3, characterized in that, The first clamping block is provided with a thrust groove to accommodate the thrust head.

6. The clamping assembly for fixing a bicycle seatpost as described in claim 1, characterized in that, The first clamping block and the second clamping block can be disengaged from the second receiving groove at the connection between the first receiving groove and the second receiving groove; The first clamping block and the second clamping block can be disengaged from the tubular space of the first receiving groove.

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