CN212386628U

CN212386628U - Knob type quick-release mechanism

Info

Publication number: CN212386628U
Application number: CN202020741009.9U
Authority: CN
Inventors: 黄俊维; 林育安
Original assignee: JD Components Co Ltd
Current assignee: JD Components Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-01-22
Anticipated expiration: 2030-05-08

Abstract

The utility model provides a knob formula quick detach mechanism, it includes a mandrel, a handle to and an adjustment unit. The handle is provided with a sleeve and a grab handle connected with the sleeve, and the handle is sleeved at one end of the mandrel by the sleeve; the adjusting unit is provided with a knob which is screwed on the mandrel and at least one ball which is arranged between the mandrel and the knob, when the knob is unscrewed, the ball releases the force applied to the sleeve of the handle, so that the handle can be pulled outwards and rotates relative to the mandrel, the handle is pressed down again after being adjusted to a proper angle, then the knob is locked, and the ball is abutted against the inner circumferential surface of the sleeve of the handle, thus the fixing of the handle is completed.

Description

Knob type quick-release mechanism

Technical Field

The present invention relates to a quick release mechanism for a bicycle wheel, and more particularly to a knob type quick release mechanism.

Background

In recent years, with the change of usage, the design of bicycles has focused on the design of quick release mechanisms, so that the rider can easily and quickly detach the components such as the front and rear wheels, so as to place the bicycle on the automobile or mass transportation, and easily and quickly reassemble the detached components after reaching a certain point. In other words, the bicycle can be used in more diversified ways by the arrangement of the quick release mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a knob formula quick detach mechanism, its simple structure and convenient operation to good location effect has.

To achieve the above objective, the present invention provides a knob type quick release mechanism, which comprises a spindle, a handle, and an adjusting unit. The mandrel has a first end and a second end, the first end having a bore; the handle is provided with a sleeve and a grab handle connected with the sleeve, and the handle is sleeved at the first end of the mandrel in a rotatable and axially movable mode along the mandrel by utilizing the sleeve; the adjusting unit is provided with a knob and at least one ball, the knob is arranged in the sleeve of the handle, and the ball is arranged in the through hole of the mandrel and used for controlling the positioning of the handle. Therefore, when the knob is locked and positioned at the first position, the ball is pushed by the knob to partially protrude out of the through hole of the mandrel, so that the ball abuts against the inner circumferential surface of the sleeve of the handle, the handle is fixed and cannot move, when the knob is unscrewed and positioned at the second position, the ball retreats into the through hole of the mandrel, the ball releases the abutting force applied to the sleeve of the handle, and the handle can rotate relative to the mandrel and can move along the axial direction of the mandrel.

Therefore, the grab handle of the handle can be adjusted to a proper angle according to actual requirements, so that the accident that the vehicle is overturned or the wheels are loosened due to collision or hooking with foreign objects is avoided. During adjustment, the knob is rotated to the second position to release the pushing force applied to the sleeve of the handle by the balls, then the sleeve of the handle is pulled outwards to force the balls to retreat into the through holes of the mandrel, and at this time, the handle can be rotated until the handle is pushed inwards after the grab handle of the handle is adjusted to a proper angle, and then the knob is rotated to the first position again to fix the handle by the balls, so that the positioning of the handle is completed. In other words, the utility model discloses a knob formula quick detach mechanism utilizes the advance and retreat of this ball of this knob control to can let this handle axial displacement to the position that can free rotation when unscrewing this knob, so that the angle of adjusting this grab handle, it is fairly simple and convenient in the operation, also effectively simplify in the aspect of the structure, and have good location effect when locking this knob.

Preferably, the knob has a ring groove, the ring groove is communicated with the through hole of the mandrel, when the knob is located at the first position, the ball is pushed by the groove wall of the ring groove to abut against the inner circumferential surface of the sleeve of the handle, and when the knob is located at the second position, the ball is partially accommodated in the ring groove.

Preferably, the first end of the spindle has a screw hole radially communicating with the through hole, and the knob has a screw portion screwed into the screw hole of the spindle, so that the knob can move between the first position and the second position along the axial direction of the spindle.

Preferably, the outer peripheral surface of the first end of the mandrel has a first outer flange, the inner peripheral surface of the sleeve has a first inner flange, when the knob is located at the second position, the handle can move along the axial direction of the mandrel, when the handle is not pulled outward and is located at the third position, the inner end surface of the sleeve abuts against the first outer flange of the mandrel to serve as a stopping point when the handle is pressed inward, and when the handle is pulled outward to the fourth position, the first inner flange of the sleeve abuts against a cap which is sleeved on the mandrel to prevent the handle from being pulled out.

Preferably, the inner peripheral surface of the cap has a second inner flange, the outer peripheral surface of the knob has a second outer flange, when the knob is located at the first position, the second outer flange of the knob abuts against the outer end surface of the mandrel to serve as a stop point when the knob is screwed, and when the knob is located at the second position, the second outer flange of the knob abuts against the second inner flange of the cap to prevent the knob from being pulled out.

Preferably, the cap is threadedly fitted over the first end of the spindle to facilitate assembly.

Preferably, a washer is provided between the sleeve of the handle and the cap to reduce surface wear between the sleeve and the cap when the sleeve is moved relative to the cap.

Preferably, when the handle is located at the third position, the ball abuts against the first inner flange of the sleeve to avoid a gap problem caused by a dimensional tolerance between the two, and when the handle moves from the third position to the fourth position, the ball is pushed by the first inner flange of the sleeve to retreat into the through hole.

Preferably, the knob has a tapered surface adjacent to the annular groove, and when the knob moves from the second position to the first position, the ball is pushed by the tapered surface to leave the annular groove and partially protrude out of the through hole.

Preferably, a washer is disposed between the spindle and the knob to reduce surface wear between the knob and the spindle when the knob is moved relative to the spindle.

Preferably, the outer circumferential surface of the second end of the spindle has an external thread, and the spindle is assembled in a corresponding screw hole of the front (rear) fork through the external thread.

The detailed structure, features, assembly or use of the knob type quick release mechanism provided by the present invention will be described in the following detailed description of the embodiments. However, those of ordinary skill in the art should understand that the detailed description and specific examples are given for the purpose of illustrating the invention and are not intended to limit the scope of the invention.

Drawings

Fig. 1 is a perspective view of the knob type quick release mechanism of the present invention.

Fig. 2 is an exploded perspective view of the knob type quick release mechanism of the present invention.

Fig. 3 is a cross-sectional view of the knob type quick release mechanism of the present invention, mainly showing the knob in the first position and the handle in the third position.

FIG. 4 is similar to FIG. 3 and shows the knob in a second position and the handle in a third position.

FIG. 5 is similar to FIG. 4 and shows the knob in a second position and the handle in a fourth position.

FIG. 6 is similar to FIG. 5 and mainly shows the handle in an angle-adjusted state.

Fig. 7 is similar to fig. 6 and shows primarily the handle in the positioned condition.

[ notation ] to show

10: knob type quick-release mechanism

20: mandrel

21: first end

22: screw hole

23: perforation

24: a first outer flange

25: first external thread

26: second end

27: second external thread

28: outer end face

30: handle bar

31: sleeve barrel

32: grab handle

33: first inner flange

34: inner end surface

40: adjusting unit

50: cap cover

51: second inner flange

52: stop part

53: screw hole

54: gasket ring

60: rotary knob

61: operation part

62: screw part

63: shaft part

64: ring groove

65: conical surface

66: bump

67: second outer flange

P1: first position

P2: second position

68: gasket ring

70: ball bearing

Detailed Description

Applicants first describe herein, throughout this specification, including the examples described below, directional terms are used with respect to the orientation of the figures. Next, in the embodiments and the drawings to be described below, the same element numbers denote the same or similar elements or structural features thereof.

Referring to fig. 1 and 2, the knob type quick release mechanism 10 of the present invention includes a spindle 20, a handle 30, and an adjusting unit 40.

The mandrel 20 has a first end 21, the first end 21 has a screw hole 22 and two through holes 23, the screw hole 22 extends along the axial direction of the mandrel 20, the two through holes 23 radially communicate with the screw hole 22 and are opposite to each other, the outer peripheral surface of the first end 21 further has a first outer flange 24 serving as a stop point and a first outer thread 25 for assembling a cap 50 (the cap 50 is a part of the adjusting unit 40, and the detailed structure will be described later). The spindle 20 also has a second end 26, the outer periphery of the second end 26 having a second external thread 27 for assembly with a corresponding threaded hole (not shown) of the front (rear) fork.

The handle 30 has a sleeve 31 and a handle 32 connected to the sleeve 31, and the handle 30 is sleeved on the first end 21 of the spindle 20 by the sleeve 31. As further shown in fig. 3, the inner peripheral surface of the sleeve 31 has a first inner flange 33.

As shown in fig. 2, the adjusting unit 40 has a cap 50, a knob 60, and two balls 70 (actually, at least one is needed, but two positioning effects are preferred), wherein:

the cap 50 is disposed on the first end 21 of the spindle 20 and located in the sleeve 31 of the handle 30, one end of the cap 50 has a second inner flange 51 serving as a stop point, and the other end of the cap 50 has a stop portion 52 serving as a stop point (as shown in fig. 5). Further, the cap 50 has a screw hole 53 on an inner circumferential surface thereof, and as shown in fig. 3, the cap 50 is threadedly mounted to the first external thread 25 of the spindle 20 through the screw hole 53.

As shown in fig. 2 and 3, the knob 60 has an operation portion 61, a screw portion 62, and a shaft portion 63 connecting the operation portion 61 and the screw portion 62, and the outer diameter of the shaft portion 63 is smaller than the outer diameter of the operation portion 61 and the outer diameter of the screw portion 62, so that an annular groove 64 surrounding the shaft portion 63 is formed between the operation portion 61 and the screw portion 62, and the annular groove 64 communicates with the two through holes 23 of the spindle 20. The operating portion 61 has a tapered surface 65 adjacent to the annular groove 64 and the shaft portion 63.

The knob 60 is located in the sleeve 31 of the handle 30 and is assembled to the screw hole 22 of the spindle 20 by the screw portion 62, so that the knob 60 can move between a first position P1 shown in fig. 3 and a second position P2 shown in fig. 4 along the axial direction of the spindle 20 when being rotated by an external force. In addition, the outer end surface of the operation portion 61 of the knob 60 has a protrusion 66 protruding out of the sleeve 31, the protrusion 66 is used for allowing a user to conveniently apply force to rotate the knob 60, the outer peripheral surface of the operation portion 61 of the knob 60 has a second outer flange 67, when the knob 60 is located at a first position P1 shown in fig. 3, the second outer flange 67 of the knob 60 abuts against the outer end surface 28 of the spindle 20 to serve as a stop point when screwing the knob 60, and when the knob 60 is located at a second position P2 shown in fig. 4, the second outer flange 67 of the knob 60 abuts against the second inner flange 51 of the cap 50 to prevent the knob 60 from being pulled out.

In order to reduce the surface wear between the knob 60 and the spindle 20 when the knob 60 moves relative to the spindle 20, as shown in fig. 3, a washer 68 elastically abutting against the spindle 20 is sleeved on the outer peripheral surface of the operating portion 61 of the knob 60.

The two balls 70 are accommodated in the two through holes 23 of the spindle 20, when the knob 60 is located at the first position P1 shown in fig. 3, the two balls 70 are pushed by the tapered surface 65 of the knob 60 to partially protrude out of the two through holes 23 of the spindle 20, so that the two balls 70 jointly abut against the first inner flange 33 of the sleeve 31, and the handle 30 is fixed and cannot be actuated, when the knob 60 is located at the second position P2 shown in fig. 4, the two balls 70 simultaneously release the abutting force applied to the first inner flange 33 of the sleeve 31, and the handle 30 can be moved by the sleeve 31 along the axial direction of the spindle 20 between the third position P3 shown in fig. 4 and the fourth position P4 shown in fig. 5, and when the handle 30 is located at the third position P3 shown in fig. 4, the surface 34 of the sleeve 31 abuts against the first outer flange 24 of the spindle 20 to serve as a stop point when the handle 30 is pressed inward, when the handle 30 is located at the fourth position P4 shown in fig. 5, the first inner flange 33 of the sleeve 31 abuts against the stop portion 52 of the cap 50 to prevent the sleeve 31 from being removed, and the handle 30 can rotate relative to the spindle 20. Further, when the handle 30 is moved from the third position P3 shown in fig. 4 to the fourth position P4 shown in fig. 5, the first inner flange 33 of the sleeve 31 pushes the two balls 70 into the two through holes 23 of the spindle 20, so that a portion of the two balls 70 are received in the annular groove 64 of the knob 60.

It should be noted that the number of the balls 70 is not limited to 2, and may be adjusted to 1 according to actual needs, or may be increased to 3 or 4, that is, 1 to 4 in actual applications, and the number of the through holes 23 may be matched with the balls 70. In addition, in order to reduce the surface abrasion between the sleeve 31 and the cap 50 when the sleeve moves relative to the cap 50, as shown in fig. 5, a washer 54 elastically abutting against the sleeve 31 is sleeved on the outer circumferential surface of the cap 50.

As mentioned above, when the angle of the handle 32 is adjusted, the knob 60 is first rotated to the second position P2 shown in fig. 4 to simultaneously release the abutting force applied to the first inner flange 33 of the sleeve 31 by the two balls 70, then the sleeve 31 of the handle 30 is pulled outward to the fourth position P4 shown in fig. 5 to force the two balls 70 to retreat into the two through holes 23 of the mandrel 20 and partially received in the annular groove 64 of the knob 60, at this time, the handle 30 is rotated to adjust the angle of the handle 32 to prevent the handle 32 from colliding with or catching the foreign object, until the handle 32 is adjusted to a proper angle (as shown in fig. 6), the sleeve 31 of the handle 30 is pushed inward to the third position P3 shown in fig. 7, then the knob 60 is rotated again to the first position P1 shown in fig. 7 to make the two balls 70 abut against the first inner flange 33 of the sleeve 31, this completes the positioning of the handle 30.

To sum up, the utility model discloses a knob formula quick detach mechanism 10 utilizes the advance and retreat of two balls 70 of knob 60 control to can let handle 30 axial displacement to the position that can the free rotation when loosening knob 60, so that the angle of adjustment grab handle 32, overall structure is fairly simple and convenient in the operation, also effectively simplifies in the aspect of the structure in addition, and has good location effect when locking knob 60.

Claims

1. A knob type quick release mechanism is characterized by comprising:

a mandrel having a first end and a second end, the first end having a through hole;

a handle having a sleeve and a handle connected with the sleeve, wherein the sleeve is rotatably sleeved on the first end of the mandrel in a manner of moving along the axial direction of the mandrel; and

an adjusting unit, which has a knob and at least a ball, the knob is set in the sleeve of the handle and can move between a first position and a second position relative to the mandrel, the ball is set in the through hole of the mandrel, when the knob is at the first position, the ball is pushed by the knob and partially protrudes out of the through hole of the mandrel, the ball is pushed against the inner peripheral surface of the sleeve of the handle to fix the handle, when the knob is at the second position, the ball is set in the through hole of the mandrel, the ball releases the pushing force applied to the sleeve of the handle.

2. The knob type quick release mechanism according to claim 1 wherein the knob has a circular groove, the circular groove is connected to the through hole of the spindle, the ball is pushed by the groove wall of the circular groove to abut against the inner circumferential surface of the sleeve of the handle when the knob is in the first position, and the ball is partially received in the circular groove when the knob is in the second position.

3. The knob type quick release mechanism according to claim 2 wherein the knob has a tapered surface adjacent to the annular groove, and when the knob is moved from the second position to the first position, the ball is pushed by the tapered surface to leave the annular groove and protrude from the through hole.

4. The knob type quick release mechanism according to claim 1 wherein the first end of the spindle has a threaded hole radially communicating with the through hole, and the knob has a threaded portion screwed into the threaded hole of the spindle so that the knob can move along the axis of the spindle between the first position and the second position.

5. The knob type quick release mechanism according to any one of claims 1 to 4 wherein the outer peripheral surface of the first end of the spindle has a first outer flange, the inner peripheral surface of the sleeve has a first inner flange, the handle is movable along the axial direction of the spindle between a third position and a fourth position when the knob is in the second position, an inner end surface of the sleeve abuts against the first outer flange of the spindle when the handle is in the third position, and the first inner flange of the sleeve abuts against an end of a cap that is fitted over the first end of the spindle when the handle is in the fourth position.

6. The knob type quick release mechanism according to claim 5 wherein the cap has a second inner flange on an inner peripheral surface thereof and a second outer flange on an outer peripheral surface thereof, the second outer flange of the knob abutting an outer end surface of the spindle when the knob is in the first position and the second outer flange of the knob abutting the second inner flange of the cap when the knob is in the second position.

7. The knob type quick release mechanism according to claim 5 wherein the cap is threadedly received over the first end of the spindle.

8. The knob type quick release mechanism according to claim 5 wherein a washer is provided between the sleeve of the handle and the cap.

9. The knob type quick release mechanism according to claim 5 wherein the ball abuts against the first inner flange of the sleeve when the handle is at the third position, and the ball is pushed by the first inner flange of the sleeve to retreat into the through hole when the handle is moved from the third position to the fourth position.

10. The knob type quick release mechanism according to claim 1 wherein a washer is disposed between the spindle and the knob.

11. The knob type quick release mechanism according to claim 1 wherein the second end of the spindle has a second external thread on its outer periphery.