JP3165318U - Brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust the distance between a brake shoe attached to a pair of left and right brake lever tips and a wheel so as to be the same on the left and right in a front wheel braking bicycle. Provide a braking device. SOLUTION: Left and right brake levers 11 and 12 have symmetrical shapes, and these brake levers 11 and 12 are rotatably attached in opposite directions with respect to a rotation support shaft 28 which is an intersection position thereof. Then, the wire cable 51 connected to the operation lever 49 is connected to the base end side portion of one brake lever 12, and the abutting portion of the connecting link 62 connected to the base end side of the other brake lever 11. The tip of the sleeve 52 of the wire cable 51 is abutted against 64. [Selection diagram] Fig. 1

Description

  The present invention relates to a brake device, and more particularly, to a brake device in which a brake shoe attached to the distal ends of a pair of left and right brake levers is crimped to a wheel to sandwich the wheel to obtain power.

  2. Description of the Related Art A configuration in which a pair of left and right brake levers are combined is widely used as a brake device for braking a front wheel of a bicycle. That is, as disclosed in Japanese Patent Application Laid-Open Nos. 2009-012660, 2007-022509, and 2006-027496, the pair of left and right brake levers are reverse to each other about the rotation support shaft. The operation lever attached to the handle is connected to the base end of one brake lever via a wire cable, and the sleeve through which the wire cable is inserted is connected to the base end of the other brake lever. I try to hit the club. When the control lever is gripped and rotated so that it is close to the grip of the handle, the pair of left and right brake levers are rotated in the operating direction by the wire cable and its sleeve, and attached to the tip of these brake levers. The brake shoe is in contact with both sides of the rim of the wheel, and the rim is crimped from both sides to generate a braking force.

  In such a conventional bicycle front wheel brake device, the connecting position of the wire lever and the sleeve and the brake lever, which are connected to the operation lever, is formed to be biased to one side with respect to the fork. The brake lever was asymmetric. Accordingly, in such a front wheel brake device, it is difficult to perform an adjustment operation in which the distance between the brake shoe and the rim attached to the distal ends of the pair of left and right brake levers is set in the same way on the left and right. If the distance between the left and right brake shoes attached to the tip of the left and right brake levers is different on the left and right, one brake shoe will come into contact with the rim when the braking operation is performed. No effective braking force is generated in the stroke until the other brake shoe contacts the rim. This is because the rim cannot be sandwiched between the left and right brake shoes. In addition, when one brake shoe is in contact with the rim and the other brake shoe is idle, there is a concern that a lateral force is applied to the wheel, which may adversely affect the wheel. .

JP 2009-012660 A JP 2007-022509 A JP 2006-027496 A

  An object of the present invention is to provide a brake device that can easily adjust the distance between the brake shoe and the wheel attached to the tip of the pair of left and right brake levers to be the same on the left and right. Is to provide.

  Another problem of the present invention is to prevent a situation in which only one of the pair of left and right brake shoes is in contact with the wheel first when the braking operation is performed, so that the brake shoe does not touch the wheel. It is to provide a braking device that does not apply force to the side.

  Still another object of the present invention is to provide a brake device that has a simple structure, a small number of parts, and is easy to assemble.

  The above-described problems and other problems of the present invention will be clarified by the technical idea of the present invention described below and the embodiments thereof.

The main idea of the present application is a brake device in which a brake shoe attached to the distal ends of a pair of left and right brake levers is pressure-bonded to a wheel so as to obtain a braking force by sandwiching the wheel.
The present invention relates to a brake device characterized in that the pair of left and right brake levers are configured symmetrically and are combined in an X shape with a pivotal support shaft as an intersecting position.

  Here, a connecting link is rotatably attached to a base end portion of the other brake lever, and a leading end portion of the wire cable sleeve abuts against a leading end portion of the connecting link and is pulled out from the sleeve of the wire cable. The formed wire may be connected to the base end side of the one brake lever. Further, it is connected to the operating lever via a wire cable, and the base end side of one brake lever is connected to the tip end portion of the wire cable and the tip end of the sleeve of the wire cable is connected to the base end side of the other brake lever. You may try to hit the part.

  Further, a helical spring is attached to the mounting seat of the rotating support shaft, and one free end of the helical spring is locked to the tip side of the one brake lever and attached to the one brake lever. The brake shoe is urged so as to be separated from the wheel, and the other free end of the helical spring is locked to the distal end side of the other brake lever, and the brake shoe attached to the other brake lever is removed from the wheel. You may make it urge | bias so that it may space apart. Further, the front wheel or the rear wheel of the bicycle may be mounted to brake the front wheel or the rear wheel.

The main idea of the present application is a brake device in which a brake shoe attached to the distal ends of a pair of left and right brake levers is pressure-bonded to a wheel so as to obtain a braking force by sandwiching the wheel.
The pair of left and right brake levers are configured symmetrically, and are combined in an X shape with the pivot shaft as an intersecting position.

  Therefore, according to such a brake device, since the pair of left and right brake levers are configured symmetrically and are combined in an X shape with the pivot shaft as an intersecting position, the pair of left and right brake levers The assembly and adjustment of the lever is facilitated, and the gap between the pair of left and right brake shoes and the wheels can be easily adjusted so that they are equal to each other on the left and right.

It is a principal part front view of the brake device of one embodiment of the present invention device. It is a principal part side view which shows the attachment state of the brake device. It is a principal part front view which shows the structure of the brake device of a modification.

  The present invention will be described below with reference to an embodiment shown in the drawings. 1 and 2 show a brake device according to an embodiment of the present application. This brake device constitutes a brake device for braking the front wheel of the bicycle. The brake device includes a pair of left and right brake levers 11 and 12. The brake levers 11 and 12 are arranged on both sides of the front wheel, and brake shoes 15 and 16 are attached to the inner ends of the brake levers 11 and 12 via holding brackets 13 and 14 at the front ends thereof. It has been. The holding metal fittings 13 and 14 holding the brake shoes 15 and 16 are attached to the distal ends of the brake levers 11 and 12 by attachment screws 17 and 18.

  As is clear from FIG. 1, the left and right brake shoes 15, 16 are arranged so as to face both sides of the rim 23 on which the tire 22 constituting the front wheel of the bicycle is mounted. Note that the upper surface of the tire 22 is covered with a guard 24.

  The brake levers 11 and 12 are rotatably supported by a rotation support shaft 28 as shown in FIGS. The pivot shaft 28 is attached so as to penetrate the fork 29 at a portion immediately above the branching position of the fork 29. A portion on the proximal end side of the pivot shaft 28 is a mounting seat 30 (see FIG. 2), and on the front side of the mounting seat 30, the pair of brake levers 11 and 12 are overlapped so as to rotate. The movable support shaft 28 is rotatably supported. The rotating support shaft 28 is fixed to the fork 29 by a fixing nut 31 from the rear side. In addition, a pair of lock nuts 33 and 34 are screwed onto the distal end side of the rotation support shaft 28 to prevent the pair of brake levers 11 and 12 from falling off.

  A helical spring 35 is attached to the mounting seat 30 of the rotating support shaft 28. The helical spring 35 is provided with winding portions 37 and 38 so as to be located on both sides of the rotation support shaft 28, and the tip side portion extending downward from the winding portions 37 and 38. Are locked to the locking pins 39 and 40 of the left and right brake levers 11 and 12, respectively.

  Next, a configuration for obtaining braking by rotating the brake levers 11 and 12 will be described. As shown in FIG. 1, grips 46 are attached to both ends of the handle 45 attached to the upper part of the fork 29 of the bicycle. For example, a bracket 47 is fixedly mounted on the handle 45 in the vicinity of the right grip 46. The bracket 47 supports an operation lever 49 by a fulcrum pin 48 so as to be rotatable. The connecting pin 50 held in the recess of the operation lever 49 is connected to the wire cable 51. A portion on the proximal end side of the sleeve 52 through which the wire cable 51 is inserted is in contact with the contact receiving portion 53 of the bracket 47.

  A connection link 62 is rotatably connected to a portion on the base end side and the upper end side of the left brake lever 11 via a connection pin 63. A concave abutting portion 64 is formed at a portion extending forward of the fork 29 of the connecting pin 63. A guide pipe 65 is bent and inserted into the abutting portion 64. A small hole 66 is formed at the bottom of the abutting portion 64. The sleeve 52 of the wire cable 51 is abutted against the bottom of the abutting portion 64 by a guide pipe 65. The wire cable 51 is drawn out through a small hole 66, and the distal end portion of the wire cable 51 is connected to a connection pin 58 on the proximal end side of the right brake lever 12.

  In the above configuration, when the operation lever 49 is pulled upward by the finger portion of the hand holding the grip 46, the operation lever 49 rotates counterclockwise around the fulcrum pin 48 shown in FIG. The wire cable 51 in 52 is pulled. Since the wire cable 51 is pulled out through the guide pipe 65 and the small hole 66 in the abutting portion 64 of the connection link 62 and is connected to the base end portion of the right brake lever 12 via the connection pin 58, The lever 12 rotates counterclockwise in FIG. 1 about the rotation support shaft 28 on the fork 29 against the helical spring 35, and the brake shoe 16 on the tip side of the brake lever 12 is located on the right side of the rim 23. Touch the side.

  As the operation lever 49 is rotated, a reaction force when the wire cable 51 is pulled is transmitted to the sleeve 52 via the bracket 47. Accordingly, the front end portion of the sleeve 52 presses the abutting portion 64 of the connecting link 62 connected to the left brake lever 11 via the connecting pin 63 by this reaction force, and thereby the base of the left brake lever 11 is pressed. The end side is pulled through the connecting link 62 and rotated clockwise about the rotation support shaft 28 against the helical spring 35. Accordingly, the brake shoe 15 at the lower end of the left brake lever 11 is pressed against the left side surface of the rim 23. In this way, the rim 23 is clamped between the brake shoes 15 and 16 on both sides, and the rim 23 is clamped and clamped from both sides according to the operating force of the operating lever 49. As a result, a braking force is generated.

  When the operation force applied to the operation lever 49 is released, the distal end portion of the right winding portion 38 of the helical spring 35 attached to the attachment seat 30 portion of the rotation support shaft 28 is interposed via the locking pin 40. Then, the right brake lever 12 is rotated counterclockwise about the rotation support shaft 28. Accordingly, the brake shoe 16 on the distal end side of the brake lever 12 is separated from the rim 23. Further, when the operation force of the operation lever 49 is released, the reaction force acting on the sleeve 52 of the wire cable 51 is also eliminated, so that the left end portion of the helical spring 35 is elastically returned around the winding portion 37. Then, the tip side portion rotates the left brake lever 11 counterclockwise about the rotation support shaft 28 via the locking pin 39 to separate the brake shoe 15 from the rim 23. In this way, braking by the left and right brake levers 11 and 12 is released.

  As is apparent from FIG. 1, such a brake device is such that the left and right brake levers 11 and 12 are symmetrical to each other, and are combined in an X shape with the pivot shaft 28 as an intersecting position. In addition, the operating points of the sleeve 52 and the wire cable 51 with respect to the brake levers 11 and 12 are symmetric. Accordingly, the rotation angle for mounting the left and right brake levers 11 and 12 can be easily adjusted, and the distance between the brake shoes 15 and 16 and the side surfaces on both sides of the rim 23 can be easily made equal to each other. Can be adjusted. In addition, it is extremely simple in structure, and it is possible to provide a low-cost brake device with a small number of parts.

  Next, the configuration of the modification will be described with reference to FIG. In this modification, the sleeve 52 of the wire cable 51 is inserted into an abutting portion 56 having a concave portion opened at the distal end side portion of the brake lever 11 shown in FIG. . A small hole 57 is continuously provided at the bottom of the concave portion constituting the abutting portion 56, and the small hole 57 passes through a portion on the base end side of the brake lever 11, and the wire cable is passed through the small hole 57. 51 is drawn. The wire cable 51 is connected to the base end portion of the right brake lever 12 via a connecting pin 58.

  Therefore, according to such a configuration, the right brake lever 12 is directly pulled by the wire cable 51 and rotated. In contrast, the brake lever 11 on the left side is rotated by the reaction force of the sleeve 52 coming into contact with the abutting portion 56 and pressing the abutting portion 56.

  Even in such a configuration, the left and right brake levers 11 and 12 are symmetrical to each other, and are rotated in opposite directions around the rotation support shaft 28 at the intersection position. Accordingly, the left and right brake levers 15 and 16 can be easily adjusted, and can be easily assembled. The structure is simple and the number of parts is small, so that a low-cost brake device can be provided.

  While the present invention has been described with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the technical idea of the present invention. For example, the above embodiment relates to a brake device attached to the front of a bicycle fork. The present invention is designed so that a pair of left and right brake levers 11 and 12 are arranged symmetrically so as to sandwich a wheel from both sides. It can be widely used for various brake devices.

  The present invention can be used as a bicycle brake device.

11 Brake lever (left)
12 Brake lever (right)
13, 14 Holding bracket 15 Brake shoe (left)
16 Brake shoe (right)
17 Mounting screw (left)
18 Mounting screw (right)
22 tire 23 rim 24 guard 28 rotating support shaft 29 fork 30 mounting seat 31 fixing nut 33, 34 lock nut 35 helical spring 37, 38 winding part 39 locking pin (left)
40 Locking pin (right)
45 handle 46 grip 47 bracket 48 fulcrum pin 49 operation lever 50 connection pin 51 wire cable 52 sleeve 53 abutment receiving portion 56 abutting portion 57 small hole 58 coupling pin 62 coupling link 63 pin 64 abutting portion 65 guide pipe 66 small hole

Claims (5)

In a brake device in which a brake shoe attached to the tip of a pair of left and right brake levers is pressure-bonded to a wheel and the wheel is sandwiched to obtain a braking force.
The brake device according to claim 1, wherein the pair of left and right brake levers are configured symmetrically and are combined in an X shape with the pivot shaft as an intersecting position.   A connecting link is rotatably attached to the base end of the other brake lever, and the tip of the wire cable sleeve is abutted against the tip of the connecting link, and the wire drawn from the sleeve of the wire cable The brake device according to claim 1, wherein the brake device is connected to a base end side of the one brake lever.   Connected to the operation lever and a wire cable, the base end of one brake lever is connected to the tip of the wire cable, and the tip of the sleeve of the wire cable is connected to the base end of the other brake lever The brake device according to claim 1, wherein the brake device is configured to hit.   A helical spring is attached to the mounting seat of the rotating spindle, and one free end of the helical spring is locked to the distal end side of the one brake lever and is attached to the one brake lever. And the other free end of the helical spring is locked to the distal end side of the other brake lever, and the brake shoe attached to the other brake lever is separated from the wheel. The brake device according to claim 1, wherein the brake device is biased as described above.   The brake device according to claim 1, wherein the brake device is mounted on a front wheel or a rear wheel of a bicycle and brakes the front wheel or the rear wheel.

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