CN212921774U

CN212921774U - Clamping and fixing device and bicycle

Info

Publication number: CN212921774U
Application number: CN202021089103.7U
Authority: CN
Inventors: 郑宏宇
Original assignee: Kunshan Jinghongli Hardware Technology Co ltd
Current assignee: Kunshan Jinghongli Hardware Technology Co ltd
Priority date: 2019-07-25
Filing date: 2020-06-12
Publication date: 2021-04-09
Anticipated expiration: 2030-06-12
Also published as: CN209634634U

Abstract

The utility model provides a clamping and fixing device, including the clamping ring that has the breach, the spanner that rotationally sets up, the clamping ring sets up two at least helicla flutes, the helicla flute reduces from its one end to its other end degree of depth gradually, two at least helicla flutes distribute around the axis of rotation of spanner, be provided with two at least archs on the spanner, the arch sets up with the helicla flute looks one-to-one, bellied tip is laminated with the tank bottom of the helicla flute that corresponds mutually, when rotating the spanner, through driving the arch and moving along the helicla flute, through the degree of depth change of helicla flute, make the clamping ring shrink, thereby realize the tight locking of clamp to needing the locking part; in the operation process, the contact area is limited to the surface of the end part of the protrusion, the area of the contact surface is small, the friction force is small, the operation is convenient, and the edge of the contact surface is positioned in the ejection structure, so that the safety is higher; the utility model also provides a bicycle, this bicycle structure design is exquisite, and convenient to use is reliable.

Description

Clamping and fixing device and bicycle

Technical Field

The utility model relates to a press from both sides tight fixing device and bicycle.

Background

The clamping and fixing device is generally used for clamping and fixing two telescopic rod-shaped or tubular components, when the device is clamped, the relative position between the two components is fixed, and when the device is loosened, the two components can move relatively to each other for position adjustment. The clamping fixture is applicable to a variety of applications, such as adjustment of bicycle saddles. The utility model with the grant publication number of CN208845907U and the invention patent with the grant publication number of CN103221698B disclose a device or structure with clamping and fixing functions, however, the technical solutions in these two patents all adopt a large relative movement between the contact surfaces to clamp the clamping ring, because the contact surfaces have a large area, the friction generated during the relative movement is large, the operation is laborious, and the edges of the contact surfaces in these two solutions are exposed outside, when the contact surfaces move relatively, the hands of the operator are easily injured by squeezing, and there is a safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming of prior art, provide a laborsaving and higher clamp fixing device of security and bicycle during operation.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a clamping and fixing device comprises a clamping ring with a notch, a wrench which is rotatably arranged and can change the size of the notch through self rotation to enable the clamping ring to clamp or loosen a component, wherein at least one of two sides of the notch is provided with a first connecting part, the wrench is provided with at least one second connecting part, the first connecting part is rotatably connected with the second connecting part, the first connecting part and the second connecting part are respectively provided with an ejection structure which interacts with each other, one of the two ejection structures comprises at least two spiral grooves, each spiral groove is provided with a first end and a second end, the depths of the spiral grooves are gradually reduced from the first end to the second end, the at least two spiral grooves are distributed around the rotation axis of the wrench, and the other of the two ejection structures comprises at least two bulges, the bulges are the same in number with the spiral grooves and are arranged in a one-to-one correspondence mode, and the bulges are attached to the corresponding groove walls of the spiral grooves.

Preferably, the wrench has a first working position and a second working position, the clamping ring has a loosening state and a clamping state, when the wrench is at the first working position, the position of the bulge corresponds to the first end of the spiral groove, and the clamping ring is at the loosening state; when the wrench is in a second working position, the position of the bulge corresponds to the second end of the spiral groove, and the clamping ring is in a clamping state.

Preferably, said helical grooves are evenly distributed about the axis of rotation of said wrench.

Preferably, the spiral groove has an arc-shaped cross section, and an extension surface of the cross section passes through a rotation axis of the wrench.

Preferably, the protrusion attached to the groove bottom of the spiral groove is hemispherical.

Preferably, the both sides of breach all are provided with first connecting portion, the second connecting portion have two, two first connecting portion are located two between the second connecting portion, two second connecting portion through the round pin axle with two first connecting portion rotate mutually and be connected, the both ends of round pin axle have spacing portion, first connecting portion and round pin axle can enough rotate relatively and can be connected axially relative motion.

Preferably, the pin shaft comprises a shaft part and a bolt, one end of the shaft part is provided with one limiting part, the other end of the shaft part is provided with a threaded hole, the bolt is connected with the threaded hole, and a nut of the bolt forms the other limiting part.

Preferably, two sides of the notch extend towards the outer side of the clamping ring to form the first connecting part.

Further preferably, the size of the gap becomes smaller in the clamped state of the clamping ring relative to the relaxed state.

The utility model also provides another kind of technical scheme: a bicycle is provided with the clamping and fixing device. In particular, a clamping fixture is used to adjust the relative position between a saddle and a frame of a bicycle.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model provides a clamping and fixing device, including the clamping ring that has the breach, the spanner that rotationally sets up, the clamping ring sets up two at least helicla flutes, the helicla flute reduces from its one end to its other end degree of depth gradually, two at least helicla flutes distribute around the axis of rotation of spanner, be provided with two at least archs on the spanner, the arch sets up with the helicla flute looks one-to-one, bellied tip is laminated with the tank bottom of the helicla flute that corresponds mutually, when rotating the spanner, through driving the arch and moving along the helicla flute, through the degree of depth change of helicla flute, make the clamping ring shrink, thereby realize the tight locking of clamp to needing the locking part; in the operation process, the contact area is limited to the surface of the end part of the protrusion, the area of the contact surface is small, the friction force is small, the operation is convenient, and the edge of the contact surface is positioned in the ejection structure, so that the safety is higher; the utility model provides a bicycle, the structural design is exquisite, and convenient to use is reliable.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the middle clamping fixture of the present invention, wherein the wrench is at a first working position.

Fig. 2 is a front view of the clamping fixture of fig. 1.

Fig. 3 is a perspective view of the clamping fixture of fig. 1 with the wrench in a second operating position.

Fig. 4 is a front view of the clamping fixture shown in fig. 3.

Fig. 5 is an assembled exploded perspective view of the clamping fixture shown in fig. 3.

Fig. 6 is a front view of the clamping fixture of fig. 5.

Fig. 7 is a front view of the clamping fixture of fig. 3, showing only the clamping ring, the first connecting portion and the first base.

Fig. 8 is a left side schematic view of the clamping fixture of fig. 7.

Fig. 9 is a perspective view of the clamping fixture shown in fig. 3, now showing only the wrench and the second base.

FIG. 10 is a front view of a pin in the clip securing apparatus shown in FIG. 3.

Wherein:

1. clamping a ring; 11. a rib; 2. a notch; 3. a first connection portion; 31. a helical groove; 32. a first base; 33. a first shaft hole; 34. a first counterbore; 4. a wrench; 5. a second connecting portion; 51. a protrusion; 52. a second shaft hole; 53. a second counterbore; 54. a second base; 55. a convex column; 56. a boss hole; 6. a shaft pin; 61. a limiting part; 62. a shaft portion; 63. a bolt; 64. a threaded bore.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.

As shown in fig. 1-10, the present invention provides a clamping and fixing device, which includes a clamping ring 1 having a notch 2, and a wrench 4 rotatably disposed and capable of changing the size of the notch 2 by rotating itself to enable the clamping ring 1 to clamp or loosen a component, wherein two sides of the notch 2 are both provided with first connecting portions 3, the two first connecting portions 3 are formed by extending two sides of the notch 2 to the outer side of the clamping ring 1, and the "outer side" herein refers to a side of the clamping ring away from the central axis thereof; two second connecting portions 5 are arranged on the wrench 4, the wrench 4 is integrally U-shaped, the two second connecting portions 5 are two ends of the U-shaped, the first connecting portion 3 is rotatably connected with the second connecting portions 5, the two first connecting portions 3 are located between the two second connecting portions 5, the two second connecting portions 5 are rotatably connected with the two first connecting portions 3 through the pin shafts 6, the two ends of each pin shaft 6 are provided with limiting portions 61, and the first connecting portions 3 can rotate and move in the axial direction of the pin shafts 6 relative to the pin shafts 6.

The first connecting portion 3 and the second connecting portion 5 are both provided with an ejection structure which interacts with each other, specifically, the first connecting portion 3 is connected with a first base 32, the first base 32 and the first connecting portion 3 are relatively fixed, the outer side surface of the first base 32, which is far away from the notch 2, is provided with a first counter bore 34, the bottom wall of the first counter bore 34 is provided with a first shaft hole 33 and a spiral groove 31, the first shaft hole 33 is a through hole, the number of the spiral grooves 31 is two, the spiral groove 31 is provided with a first end and a second end which are different in groove depth, the depth of the spiral groove 31 is gradually reduced from the first end to the second end, the two spiral grooves 31 are uniformly distributed around the rotation axis of the wrench 4, the cross section of the spiral groove 31 is arc-shaped, and the extension surface; the second connecting portion 5 is connected with a second base 54, the size of the second base 54 is matched with that of the first counter bore 34, after the assembly, the second base 54 is inserted into the first counter bore 34 of the first base 32, two protrusions 51 are arranged on the inner side face, close to the first base 32, of the second base 54, the protrusions 51 are arranged in one-to-one correspondence with the spiral grooves 31, and the protrusions 51 are attached to the groove walls of the corresponding spiral grooves 31.

The wrench 4 has a first working position and a second working position, the clamping ring 1 has a loosening state and a clamping state, when the wrench 4 is at the first working position, the position of the bulge 51 corresponds to the first end of the spiral groove 31, and the clamping ring 1 is at the loosening state; when the wrench 4 is in the second working position, the protrusion 51 is located at the second end of the spiral groove 31, the clamping ring 1 is in the clamping state, the clamping state of the clamping ring 1 is relatively in the loosening state, and the size of the gap 2 is reduced.

Spanner 4 rotates to second operating position from first operating position and drives protruding 51 and remove to the second end from first end along spiral groove 31, specifically, second base 54 is provided with two projection 55 on keeping away from the lateral surface of first base 32, be provided with on the second connecting portion 5 of spanner 4 tip with projection 55 assorted projection hole 56, when second base 54 is connected to on the second connecting portion 5, projection 55 inserts in the projection hole 56, make spanner 4 can pass through second connecting portion 5 when rotating, the cooperation between projection hole 56 and the projection 55 drives second base 54 and rotates, rethread second base 54's rotation drives protruding 51 and removes along spiral groove 31.

In order to reduce the friction between the protrusion 51 and the wall of the spiral groove 31, the protrusion 51 has a hemispherical shape with a radius smaller than or equal to the radius of the arc of the section of the spiral groove 31.

The pin 6 in this embodiment includes a shaft portion 62 and a bolt 63, one end of the shaft portion 62 is provided with a limiting portion 61, the other end of the shaft portion 62 is provided with a threaded hole 64, the bolt 63 is connected with the threaded hole 64, and a nut of the bolt 63 forms the other limiting portion 61.

The embodiment also provides a bicycle with the clamping and fixing device. In particular, clamping fixtures are used to adjust the relative position between the saddle and the frame of a bicycle. When the clamping ring is used, the clamping ring 1 is sleeved on a pipe fitting (not shown in the drawing) of a bicycle frame, a contraction groove (not shown in the drawing) is formed in the pipe fitting, the convex edge 11 extending along the axial direction of the clamping ring 1 on the inner wall of the clamping ring 1 is inserted into the contraction groove of the pipe fitting, the width of the convex edge 11 is smaller than the groove width of the contraction groove, when the clamping ring 1 is switched to a clamping state by rotating the wrench 4, the contraction groove is extruded, the width of the contraction groove is reduced, the pipe fitting can be tightened, the pipe wall of the pipe fitting is tightly pressed on a rod piece (not shown in the drawing, and a saddle is connected onto the rod piece) inserted into the pipe fitting, and therefore the position between the bicycle saddle and the bicycle frame is locked.

The operation of the clamping and fixing device for a bicycle is explained as follows:

in a relaxed state of the pipe fitting, the protrusion 51 is located at a deeper position in the spiral groove 31 (e.g. the first end of the spiral groove 31), the first connecting portion 3 and the second connecting portion 5 are relatively close to each other, the size of the gap 2 of the clamping ring 1 is relatively large, and the clamping ring 1 does not extrude the pipe fitting. When clamping is needed, the wrench 4 is rotated downwards to be rotated from the first working position to the second working position, the second base 54 rotates along with the rotation of the wrench 4, and drives the protrusion 51 to move to a shallower position (such as a second end of the spiral groove 31) of the spiral groove 31 along the spiral groove 31, under the interaction of the protrusion 51 and the spiral groove 31, the first connecting portion 3 is pushed to move along the axial direction of the pin shaft 6, so that the two first working portions 3 approach each other, the notch 2 is squeezed and reduced, the pipe fitting is tightened by the clamping ring 1, the pipe fitting is clamped, and the pipe fitting and the part inserted therein are clamped and fixed.

The clamping fixture in this embodiment is not limited to use on bicycles, but is applicable to the definition of the relative position between two rod-like or tubular members that can telescope with respect to each other.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A clamping fixture, comprising:

including clamp ring (1) that has breach (2), rotationally set up and can rotate through self and change breach (2) size and make clamp ring (1) can press from both sides tight or the spanner (4) that relaxs to the part, at least one side in the both sides of breach (2) is provided with first connecting portion (3), at least one second connecting portion (5) have on spanner (4), first connecting portion (3) rotate with second connecting portion (5) mutually and are connected its characterized in that: first connecting portion (3) with all be provided with interact's ejecting structure on second connecting portion (5), two one among the ejecting structure includes two at least helicla flute (31), helicla flute (31) have the different first end of groove depth degree and second end, helicla flute (31) reduce from its first end to its second end degree of depth degree gradually, two at least helicla flutes (31) wind the axis of rotation of spanner (4) distributes, two another among the ejecting structure includes two at least archs (51), arch (51) with helicla flute (31) number is the same and the one-to-one sets up, arch (51) and corresponding the cell wall of helicla flute (31) is laminated mutually.

2. The clamping fixture of claim 1, wherein: the wrench (4) has a first working position and a second working position, the clamping ring (1) has a loosening state and a clamping state, when the wrench (4) is at the first working position, the protrusion (51) is positioned corresponding to the first end of the spiral groove (31), and the clamping ring (1) is at the loosening state; when the wrench (4) is in the second working position, the protrusion (51) corresponds to the second end of the spiral groove (31), and the clamping ring (1) is in a clamping state.

3. The clamping fixture of claim 1, wherein: the spiral grooves (31) are uniformly distributed around the rotation axis of the wrench (4).

4. The clamping fixture of claim 1, wherein: the cross section of the spiral groove (31) is arc-shaped, and the extension surface of the cross section passes through the rotation axis of the wrench (4).

5. The clamping fixture of claim 1, wherein: the bulge (51) attached to the groove bottom of the spiral groove (31) is hemispherical.

6. The clamping fixture of claim 1, wherein: the both sides of breach (2) all are provided with first connecting portion (3), second connecting portion (5) have two, two first connecting portion (3) are located two between second connecting portion (5), two second connecting portion (5) through round pin axle (6) with two first connecting portion (3) rotate mutually and are connected, the both ends of round pin axle (6) have spacing portion (61), first connecting portion (3) and round pin axle (6) can enough rotate relatively and can be connected axially relative movement.

7. The clamping fixture of claim 6, wherein: the hinge pin comprises a shaft part (62) and a bolt (63), one end of the shaft part (62) is provided with one limiting part (61), the other end of the shaft part (62) is provided with a threaded hole (64), the bolt (63) is connected with the threaded hole (64), and the nut of the bolt (63) forms the other limiting part (61).

8. The clamping fixture of claim 1, wherein: the two sides of the notch (2) extend to the outer side of the clamping ring (1) to form the first connecting part (3).

9. The clamping fixture of claim 2, wherein: the clamping state of the clamping ring (1) is opposite to the loosening state, and the size of the gap (2) is reduced.

10. A bicycle, characterized in that: with a clamping fixture according to any one of claims 1-9.