CN210761080U - Bicycle seat pipe quick detach device and bicycle - Google Patents

Abstract

The utility model discloses a bicycle seat pipe quick detach device and bicycle, quick detach device includes: the binder clamping ring comprises a ring body sleeved on the seat tube and two clamping arms connected to the ring body; the fixed shaft penetrates through the two clamping arms; a handle connected with the fixed shaft; the hinge assembly is arranged between the two clamping arms and comprises two hinged plates which are hinged with each other, the two hinged pieces are respectively hinged with the two clamping arms, and the two hinged pieces can rotate relatively; the two clamping arms tension the hinge assembly through the elasticity of the ring body; the moving piece is arranged on the fixed shaft and is positioned between the two clamping arms; the fixed shaft is used for driving the moving piece to push or pull the hinge assembly when rotating along with the handle, and the included angle of the two hinge pieces is adjusted. The fixed shaft drives the moving piece to push or pull the hinge assembly, when the angle between the hinge pieces is reduced, the two hinge pieces contract inwards to pull the two clamping arms inwards, the distance between the two clamping arms is shortened, and the seat tube is locked. The seat tube can be locked and released only by rotating the handle.

Description

Bicycle seat pipe quick detach device and bicycle

Technical Field

The utility model relates to a bicycle field especially relates to bicycle seat pipe quick detach device and bicycle.

Background

Bicycles, especially shared bicycles, face a large group of customers, and adjustment of the seat height is an important part in use due to the difference in height of the customers. The existing seat tube clamping and quick-dismounting mainly comprises three forms, one is locking by a screw and a nut; the second is that the eccentric column handle, the arc guide block, the screw and the nut are locked by utilizing the eccentricity.

Both of the above two approaches have certain disadvantages. The first locking mode needs a special tool for locking, and the height of the seat cushion needs to be adjusted by using a tool; the second handle is inconvenient to operate and requires a large pressing force. Accordingly, there is a need for improvements in the art.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a bicycle seat pipe quick detach device in this application, the user can accomplish the locking and the release of seat pipe fast through less power turning handle.

The technical scheme is as follows: a bicycle seat tube quick release device comprising:

the binder clamping ring comprises a ring body sleeved on the seat tube and two clamping arms connected to the ring body;

the fixing shaft penetrates through the two clamping arms and can rotate around the axis of the fixing shaft;

the handle is connected with the fixed shaft;

the hinge assembly is arranged between the two clamping arms and at least comprises two hinged pieces, the two hinged pieces are respectively hinged with the two clamping arms, and the two hinged pieces can rotate relatively;

the moving piece is arranged on the fixed shaft and is positioned between the two clamping arms;

the fixed shaft is used for driving the moving part to push or pull the hinge assembly when rotating along with the handle so as to adjust the included angle of the two hinge parts, and the hinge assembly overcomes the elasticity of the ring body to pull the two clamping arms close to the moving part.

In the quick assembling and disassembling device for the bicycle seat tube, the ring body of the bunch clamp ring is sleeved on the seat tube, and the tightness of clamping the seat tube by the ring body is determined by the distance between the two clamp arms. When the hinge assembly is in a tensioning state, the distance between the two clamping arms is the largest, the seat tube is loosened, and the height can be adjusted; when the user rotates the handle, drive the moving member through the fixed axle and promote or stimulate hinge assembly, hinge assembly is promoted or when pulling, and the angle between two articulated elements can change, and when the contained angle of two articulated elements diminished, two articulated elements shrink inwards, with the inside pulling of two arm lock, shorten the distance between the arm lock, lock the seat pipe, when the contained angle grow of two articulated elements, then release the seat pipe. The angle between the two hinged parts can be adjusted by rotating the handle, namely the locking and the releasing of the seat tube can be adjusted. In the quick-release device, the seat tube can be locked and released only by rotating the handle, the handle is parallel to the direction of the clamping arm, the longer force arm of the handle is designed and cannot be blocked by the seat tube and the bundle clamping ring, and labor can be saved.

In one embodiment, the moving member is a cam sleeved on the fixed shaft, and the cam abuts against the hinge assembly. The displacement stroke of the cam is stable, and the repeatability is strong.

In one embodiment, the cam is a circular block eccentrically disposed on the stationary shaft. The eccentric round block is one of the cams, and the processing is more convenient.

In one embodiment, the hinge assembly further comprises: the cam bearing block is provided with an arc-shaped groove, and the arc-shaped groove is used for bearing the cam. The inner wall of the arc-shaped groove is in contact with the surface of the cam, so that the cam is prevented from being in point contact with the bearing block, great abrasion is formed in the pushing direction, and the service life of the quick-release device is prolonged.

In one embodiment, the two hinged members are hinged, and the receiving block is disposed at the hinge point of the two hinged members.

In one embodiment, the relative position of the cam and the fixed shaft is adjustable in the radial direction of the fixed shaft, and an adjusting piece is arranged between the cam and the fixed shaft. And the outward flange of cam also can influence the cam because of wearing and tearing take place because of the contact with the piece that holds, wearing and tearing back, can't imbed in the arc wall, lead to promoting the distance that holds the piece less or can't promote. The adjusting piece enables the cam to be embedded into the arc-shaped groove again, the hinge assembly is pushed, and the service life of the quick-release device is further prolonged.

In one embodiment, the hinge is hinged to the clip arm by a hinge shaft, wherein the hinge shaft extends through the clip arm, and the hinge comprises: the hinge part body, connect in hinge this body and with the articulated shaft articulated extension arm.

In one embodiment, the clamping arm is provided with a receiving groove, and the hinged position of the extension arm and the hinge shaft is located in the receiving groove. The pin joint of extension arm and articulated shaft is located accomodates the inslot, accomodates the groove and can avoid this pin joint to expose, reduces the damage risk and the speed of rustting, has saved the space that the articulated elements occupy simultaneously.

In one embodiment, two ends of the fixed shaft in the length direction are respectively provided with a tip, the handle is provided with two force arms connected to the fixed shaft, and one side of each force arm departing from the clamping arm is abutted to one of the tips.

In one embodiment, the bicycle seat tube quick release device further comprises: and the locking mechanism is arranged on the handle and used for locking the handle on the seat tube.

The utility model also provides a bicycle, include: the bicycle seat tube quick-release device comprises an outer tube with a first end part, an inner tube penetrating into the outer tube from the first end part of the outer tube, a saddle and the bicycle seat tube quick-release device, wherein the first end part of the outer tube is provided with a notch, a ring body of the bunch clamp ring is fixed at the first end part of the outer tube, and the saddle is fixed on the inner tube.

Above-mentioned bicycle can accomplish the regulation of saddle height through twist grip fast, adapts to various users' demand, has easy operation, laborsaving, adjusts advantage fast, long service life.

Drawings

FIG. 1 is a schematic view of a quick release device and a seat tube according to an embodiment;

FIG. 2 is an exploded view of a quick release device and seat tube according to one embodiment;

FIG. 3 is a schematic view of a fixed shaft, cam, hinge assembly and binder clip according to one embodiment;

FIG. 4 is a schematic view of the handle and seat tube configuration in one embodiment;

FIG. 5 is a schematic view of the mounting of a hinge assembly within a bundle clamp ring according to one embodiment;

FIG. 6 is a schematic diagram of a swing arm according to an embodiment;

fig. 7 is a schematic structural view of a fixing mechanism in one embodiment.

Wherein: 1. a seat tube; 11. an outer tube; 111. a first end portion; 112. opening the gap; 12. an inner tube; 2. a bundle clamp ring; 21. a ring body; 22. clamping arms; 221. a receiving groove; 3. a fixed shaft; 31. a tip; 32. an adjustment member; 4. a handle; 41. a force arm; 42. a grip; 5. a hinge assembly; 51. an articulation member; 511. a hinge body; 512. an extension arm; 52. a bearing block; 521. an arc-shaped slot; 53. hinging a shaft; 8. a moving member; 81. a cam; 811. a waist-shaped groove; 82. a swing rod; 61. a support; 62. a shaft body; 63. a hook is clamped; 64. pressing a key; 65. a return torsion spring; 7. a snap ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

The utility model discloses an among the first embodiment, provide a bicycle seat pipe quick detach device, as shown in fig. 1, establish on the seat pipe 1 of bicycle, can relax or press from both sides tight seat pipe 1, the user can be when seat pipe 1 relaxs the height of adjusting seat pipe 1, uses quick detach device to lock seat pipe 1 after adjusting suitable height, uses the bicycle.

As shown in fig. 1 and 2, the bicycle seat tube quick release device comprises: restraint collar 2, fixed axle 3, handle 4, hinge subassembly 5 and moving member 8, wherein restraint collar 2 includes: the seat tube comprises a ring body 21 sleeved on the seat tube 1 and two clamping arms 22 connected to the ring body 21, wherein the two clamping arms 22 are arranged in parallel. The fixed shaft 3 penetrates through the two clamping arms 22, and the handle 4 is connected with the fixed shaft 3 and can rotate around the axis of the fixed shaft 3 and drive the fixed shaft 3 to rotate around the axis. The hinge assembly 5 includes at least two hinges 51, two hinges 51 are disposed between the two clamping arms 22, and the two hinges 51 are respectively hinged to the two clamping arms 22, wherein the two hinges 51 can be relatively rotatable, and the two hinges 51 can be hinged to each other, or connected through another hinge component, so that the angle between the two hinges 51 can be adjusted. The ring body 21 has a certain elastic force such that the inner diameter of the ring body 21 can be reduced or increased. Two articulated elements 51 respectively with two arm lock 22 butts, hinder two arm lock 22 and be close to each other, when two articulated elements 51 contained angle changes, two arm lock 22 open the angle difference to make the internal diameter of ring body 21 be different size, the realization is tight or is relaxed to the clamp of seat pipe 1.

When the user rotates the handle 4 in one direction, the fixed shaft 3 drives the moving member 8 to push or pull the hinge assembly 5, so as to adjust the included angle between the two hinge members 51. In this embodiment, the moving member 8 pushes the hinge assembly 5 to hinge the angle between the two hinges 51. When the handle 4 is rotated in one direction, the included angle between the two hinge parts 51 is reduced, and the hinge parts 51 overcome the elastic force of the ring body 21 to draw the two clamping arms 22 close, thereby reducing the ring body 21 and locking the seat tube 1. When rotating handle 4 towards another direction, driving moving member 8 through fixed axle 3 and retracting, ring body 21 expands through self elasticity, and opening hinge subassembly 5, the contained angle of two increase articulated elements 51 loosens seat pipe 1 simultaneously, makes the height that the user can adjust seat pipe 1.

In the quick release device, the seat tube 1 can be locked and released only by rotating the handle 4, so that the quick release device is quick and convenient to use; the fixed shaft 3 is vertical to the seat tube 1, the handle 4 is parallel to the clamping arm 22, the longer force arm 41 of the handle 4 is designed and cannot be blocked by the seat tube 1 and the binder clamping ring 2, the longer handle 4 can achieve the labor-saving effect, and the use is convenient for users.

In the present embodiment, as shown in fig. 3, the moving member 8 is a cam 81 provided on the fixed shaft 3, and the cam 81 is rotatable with the fixed shaft 3, but the moving member 8 may be another member, and the cam 81 is merely exemplified in the present embodiment. The cam 81 is provided with a waist-shaped groove 811, the waist-shaped groove 811 is provided with a linear inner wall, the fixed shaft 3 is provided with a plane, the plane of the fixed shaft 3 can be jointed with the linear inner wall of the waist-shaped groove 811, and the fixed shaft 3 and the cam 81 can be kept to rotate synchronously. However, since the movement of the cam 81 does not have a circular path, when the cam 81 rotates, the cam 81 contacts the hinge assembly 5 at different positions, so that the hinge assembly 5 and the fixed shaft 3 are changed, and the hinge assembly 5 is pushed. The hinge assembly 5 further includes: and a receiving block 52, wherein the receiving block 52 is used for receiving the cam 81 and pushing the two hinges 51 to adjust the angles of the two hinges 51. In this embodiment, the two hinges 51 are directly hinged, and the receiving block 52 is disposed at the hinge point of the two hinges 51. Of course, the two articulated parts 51 can also be connected by an articulated part, in which case the receiving block 52 can be provided on the articulated part. The receiving block 52 always abuts against the cam 81 to form a cam follower mechanism, and the receiving block 52 is a follower in the cam follower mechanism. Referring to fig. 1 and 3, the two hinge members 51 are hinged to each other through a central shaft 54, the cam 81 can push the receiving block 52 toward the seat tube 1 when rotating, the receiving block 52 can push the central shaft 54 between the two hinge members 51, when the central shaft 54 of the hinge assembly 5 is pushed, since the hinge joints of the hinge members 51 and the clip arms 22 are fixed, the included angle between the two hinge members 51 is gradually reduced from 180 °, the two hinge members 51 approach each other, the two clip arms 22 are pulled toward the direction of approaching each other, and the ring body 21 is locked to lock the seat tube 1.

In this embodiment, the cam 81 is a circular block eccentrically disposed on the fixed shaft 3, and the circular block is convenient to process and manufacture. The points on the edge of the round piece are different in radial direction with respect to the fixed shaft 3, so that when the round piece rotates, the receiving piece 52 forms a pushing stroke in the direction towards the seat tube 1, changing the angle between the two hinged pieces 51.

It is worth noting that as shown in fig. 3, the receiving block 52 is provided with an arc-shaped groove 521 for receiving the cam 81, and a part of the round block is embedded in the arc-shaped groove 521 to realize surface contact with the cam 81, so as to avoid point contact between the cam 81 and the receiving block 52, generate large abrasion in the pushing direction, and prolong the service life of the quick release device.

The outer edge of the cam 81 is worn due to the contact with the receiving block 52, and the cam 81 is affected after the wear, and cannot be embedded into the arc-shaped groove 521, so that the distance for pushing the receiving block 52 is small or the receiving block cannot be pushed. In view of this, the quick release device in this embodiment further includes: the adjusting piece 32 adjusts the relative position of the cam 81 and the fixed shaft 3 in the radial direction of the fixed shaft 3 as soon as the adjusting piece 32 adjusts. Thereby adjust the distance between cam 81 and hinge assembly 5, make cam 81 can inlay in arc groove 521, fixed axle 3 is movable in waist type groove 811, and adjusting part 32 can be: the adjusting bolt is in threaded connection with the cam 81 and the fixed shaft 3 and faces the hinge assembly 5, the cam 81 can move towards the direction close to the hinge assembly 5 by rotating the adjusting bolt, the eccentricity of the cam 81 is increased, the cam 81 can be embedded into the arc-shaped groove 521 again, the hinge assembly 5 is pushed, and the service life of the quick-release device is further prolonged. Of course, the adjusting member 32 may be other members, and the relative position of the cam 81 and the fixed shaft 3 may be adjusted by changing the position of the fixed shaft 3 in the waist-shaped groove 811, such as a fixing member inserted between the fixed shaft 3 and a groove wall of the waist-shaped groove 811, and the adjusting bolt is only used as an example in the present embodiment.

In addition, as shown in fig. 3 and 4, the fixing shaft 3 is provided at both ends thereof in the longitudinal direction with tips 31, and the handle 4 includes: two force arms 41 arranged on the fixed shaft 3 and a holding handle 42 connected to the two force arms 41 and far away from the fixed shaft 3. The two force arms 41 correspond to the two end heads 31 respectively, one side of each force arm 41, which is far away from the clamping arm 22, abuts against the corresponding end head 31, and the end heads 31 are used for limiting the positions of the force arms 41 and preventing the force arms 41 from being separated from the fixed shaft 3.

As shown in fig. 3, in the clamping arm 22, the hinge 51 is hinged to the clamping arm 22 through a hinge shaft 53, the hinge shaft 53 penetrates through the clamping arm 22, and the direction is the up-down direction in the drawing, and with reference to fig. 3 and 5, the hinge 51 includes: articulated elements 51 body and the extension arm 512 of connection on the articulated elements 51 body, extension arm 512 is formed with two, both ends are articulated with articulated shaft 53 about respectively, in order to protect the pin joint of extension arm 512 and articulated shaft 53, and promote quick detach device's pleasing to the eye degree, seted up on arm lock 22 and accomodate groove 221, extension arm 512 is located with the pin joint of articulated shaft 53 and accomodates groove 221, accomodate groove 221 and can avoid this pin joint to expose, reduce the damage risk and rust the speed, the space that articulated elements 51 occupy has been saved simultaneously.

As shown in fig. 1 and 2, when the seat tube 1 is locked, the user needs to rotate the handle 4, and in actual operation, the user holds the grip handle 42 to rotate the handle 4 and drive the fixed shaft 3 and the cam 81 to rotate. When a user rotates the handle 4 in the first direction, the arrow direction in fig. 2 is the first direction, and with reference to fig. 1, fig. 2 and fig. 3, the handle 4 drives the fixed shaft 3 and the cam 81 to rotate, the cam 81 also rotates in the first direction, and the position where the cam 81 contacts the receiving block 52 changes, so that the rotation axis of the cam 81, that is, the distance between the fixed shaft 3 and the receiving block 52 increases, the cam 81 pushes the receiving block 52 in the direction of the seat tube 1, thereby reducing the included angle between the two hinge parts 51, and the tightening ring body 21 clamps the seat tube 1. Handle 4 rotates to reaching extreme position near seat pipe 1 position along first direction, and ring body 21 presss from both sides seat pipe 1 tightly to the limit this moment, and seat pipe 1 can not become flexible, guarantees to ride safely in the user.

As shown in fig. 3 and 4, when the handle 4 rotates to the limit position along the first direction, the handle 4 approaches the seat tube 1 and is locked with the seat tube 1, so as to lock the position of the cam 81, and the ring body 21 and the seat tube 1 are fixed at the locking position.

As shown in fig. 1, 2 and 3, when the seat tube 1 is unlocked, the handle 4 locked on the seat tube 1 rotates along the second direction, the second direction is opposite to the first direction, the handle 4 drives the fixed shaft 3 and the cam 81 to rotate, the cam 81 also rotates along the second direction, the position where the cam 81 contacts with the receiving block 52 changes, so that the rotation axis of the cam 81, namely the distance between the fixed shaft 3 and the receiving block 52 is smaller, the two clamping arms 22 move in the direction away from each other under the elastic force of the ring body 21, the ring body 21 releases the seat tube 1, a user can adjust the height of the seat tube 1, meanwhile, the hinge assembly 5 is continuously tensioned, the included angle of the two hinge elements 51 is increased, the receiving block 52 is always tightly attached to the cam 81, and the next locking can be continuously performed.

The quick release device in the embodiment can lock and release the seat tube 1 only by rotating the handle 4, and is quick and convenient to use; the direction of the force arm 41 of the handle 4 is parallel to the direction of the clamping arm 22, the handle 4 can not be blocked by the seat tube 1 and the binder clamping ring 2 when rotating, and the handle 4 can be arranged longer, so that the labor-saving effect is achieved.

The second embodiment of the present invention relates to a bicycle seat tube quick release device, which is substantially the same as the first embodiment, and the main difference is that, in this embodiment, as shown in fig. 6, the moving member is a swing rod 82 hinged on the fixed shaft 3, and the hinge assembly 5 shown in fig. 3 and 6 includes: two hinged parts 51 hinged with each other and a bearing block 52 arranged at the hinged point of the two hinged parts 51, one end of the swing rod 82 is hinged on the fixed shaft 3, and the other end is hinged on the bearing block 52. As shown in the figure, when the handle 4 rotates in the first direction, the swing rod 82 is driven to swing by the fixed shaft 3, so that the distance of the swing rod 82 in the horizontal direction towards the hinge block is increased. Thereby pushing the bearing block 52 to reduce the angle between the two hinges 51, and the tightening ring 21 clamps the seat tube 1 in conjunction with fig. 1. When the handle 4 rotates towards the second direction, the swing rod 82 is driven to swing through the fixed shaft 3, so that the distance of the swing rod 82 in the horizontal direction towards the direction of the hinge block is reduced, the ring body 21 is loosened, the two clamping arms 22 move towards the direction away from each other under the elasticity of the ring body 21, the hinge assembly 5 is continuously tensioned, the included angle of the two hinge assemblies 51 is increased, the seat tube 1 is loosened through the ring body 21, and a user can adjust the height of the seat tube 1.

From the above, in the quick release device for the seat tube 1 in the embodiment, the clamping and releasing of the seat tube 1 can be adjusted through the swing rod 82 and the hinge assembly 5 only by rotating the handle 4, which is convenient and fast. Meanwhile, the moving member 8 may also be another component or structure, and when the rotating shaft rotates in one direction, the receiving block 52 may be pushed forward, and when the rotating shaft rotates in another direction, the receiving block may retract, which is not limited to the cam 81 and the swing link 82.

The third embodiment of the present invention relates to a bicycle seat tube quick release device, which is substantially the same as the first embodiment, and is mainly characterized in that a locking mechanism is arranged on the handle 4, when the handle 4 rotates to the limit position along the first direction, the handle 4 is close to the seat tube 1, and the locking mechanism locks the handle 4 on the seat tube 1.

As shown in fig. 4 and 7, the lock mechanism includes: a bracket 61 arranged at the holding end of the handle 4, a shaft body 62 arranged in the bracket 61, a hook 63 rotatably arranged on the shaft body 62, a key 64 for pushing the hook 63, and a reset torsion spring 65 connected between the bracket 61 and the hook 63. The seat tube 1 is provided with a clamping position which can be a clamping groove formed on the seat tube 1 or a clamping ring 7 and other structures, in the embodiment, the clamping position is the clamping ring 7 arranged on the seat tube 1, and when the handle 4 rotates to the limit position along the first direction, the clamping hook 63 can be directly clamped into the clamping ring 7. Realize the fixed of handle 4 on seat pipe 1, guarantee that seat pipe 1 is pressed from both sides tightly all the time when the user rides, guarantee the safety of riding. The button 64 is arranged on one side of the handle 4 departing from the seat tube 1, and the hook 63 can be pushed to rotate around the shaft body 62 by pressing the button 64, so that the button is separated from the snap ring 7, and the handle 4 can be lifted. One end of the reset torsion spring 65 is hooked on the bracket 61, the other end is hooked on the hook 63, and after the key 64 is released, the hook 63 can return to the original position under the action of the reset torsion spring 65.

A fourth embodiment of the present application relates to a bicycle, which, in conjunction with fig. 2, includes: the quick release device for the bicycle seat tube 1 comprises an outer tube 11 having a first end 111, an inner tube 12 penetrating into the outer tube 11 from the first end 111 of the outer tube 11, and a saddle, wherein the first end 111 of the outer tube 11 is provided with a notch 112, the ring body 21 of the binder clip 2 is fixed to the first end 111 of the outer tube 11, and the saddle is fixed to the inner tube 12. The quick release device of the bicycle seat tube 1 can clamp the first end part 111 through the ring body 21, the outer tube 11 contracts towards the direction of the notch 112, and the inner tube 12 is clamped, so that the seat tube 1 is fixed. The first end part 111 can be loosened through the ring body 21, the inner tube 12 is loosened through the outer tube 11, the height of the saddle on the inner tube 12 can be adjusted by a user, the requirement of various users is met, and the saddle adjusting device has the advantages of being simple in operation, labor-saving, fast in adjustment and long in service life.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

The above embodiments are only intended to illustrate some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. A bicycle seat tube quick detach device which characterized in that includes:

the binder clamping ring comprises a ring body sleeved on the seat tube and two clamping arms connected to the ring body;

the fixing shaft penetrates through the two clamping arms and can rotate around the axis of the fixing shaft;

the handle is connected with the fixed shaft;

the hinge assembly is arranged between the two clamping arms and at least comprises two hinged pieces, the two hinged pieces are respectively hinged with the two clamping arms, and the two hinged pieces can rotate relatively;

the moving piece is arranged on the fixed shaft and is positioned between the two clamping arms;

the fixed shaft is used for driving the moving piece to push or pull the hinge assembly when rotating along with the handle so as to adjust the included angle of the two hinge pieces, and the hinge assembly overcomes the elasticity of the ring body to pull the two clamping arms close.

2. The quick release device for a bicycle seat tube as claimed in claim 1, wherein the moving member is a cam fitted over the fixed shaft, the cam abutting against the hinge assembly.

3. The bicycle seat tube quick release device of claim 2, wherein the cam is a circular block eccentrically disposed on the fixed shaft.

4. The bicycle seat tube quick release device of claim 2, wherein the hinge assembly further comprises: the cam bearing block is provided with an arc-shaped groove, and the arc-shaped groove is used for bearing the cam.

5. The quick release device for bicycle seat tube according to claim 4, characterized in that the two hinge members are hinged together, and the receiving block is disposed at the hinge point of the two hinge members.

6. The bicycle seat tube quick release device according to claim 2 or 4, wherein the relative position of the cam and the fixed shaft is adjustable in a radial direction of the fixed shaft, and an adjusting member is provided therebetween.

7. The quick release device for bicycle seat tube according to claim 1, wherein the hinge member is hinged to the clamping arm by a hinge shaft, wherein the hinge shaft extends through the clamping arm, the hinge member comprises: the hinge piece body, connect in the hinge piece body and with the articulated shaft articulated extension arm.

8. The quick release device for bicycle seat tube according to claim 7, wherein the clamping arm has a receiving slot, and the hinge point of the extension arm and the hinge shaft is located in the receiving slot.

9. The quick release device for a bicycle seat tube according to claim 1, wherein two ends of the fixing shaft in the length direction are respectively provided with a tip, the handle has two force arms connected to the fixing shaft, and one side of the force arm away from the clamping arm abuts against one of the tips.

10. The bicycle seat tube quick release device of claim 1, further comprising: and the locking mechanism is arranged on the handle and used for locking the handle on the seat tube.

11. A bicycle, comprising: the quick release device for the bicycle seat tube comprises an outer tube with a first end part, an inner tube penetrating into the outer tube from the first end part of the outer tube, and a saddle, wherein the quick release device for the bicycle seat tube is as claimed in any one of claims 1 to 10, the first end part of the outer tube is provided with a notch, a ring body of the bunch clamp ring is fixed at the first end part of the outer tube, and the saddle is fixed on the inner tube.

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