Front brake structure of bicycle

Abstract

The utility model discloses a front brake structure of a bicycle, which relates to the field of bicycle brake and comprises a mounting frame and a brake pad, the brake pad is detachably mounted on one side of the mounting frame, two ejector pins are movably inserted on the brake pad, an adjusting frame is arranged at the other end of the mounting frame, an adjusting mechanism is detachably mounted on the adjusting frame, and the adjusting mechanism is movably connected with the ejector pins. And the output end of the adjusting mechanism penetrates through the mounting frame and is fixedly connected with the brake pad, and a position sensor and a controller are arranged at the two ends of the adjusting mechanism correspondingly. When the abrasion thickness of the brake pad is reduced, the ejector pin makes contact with a wheel and moves backwards, the support synchronously moves backwards, the position sensor detects the position value of the position distance and sends the position value to the controller, and the controller starts the adjusting mechanism to drive the brake pad to move forwards by the same abrasion distance. The precision of abrasion adjustment of the brake pad is greatly improved, the contact friction force between the brake pad and a wheel is guaranteed, the braking effect is guaranteed, and then the riding safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle brake field, especially a bicycle front brake structure. BACKGROUND

[0002] At present, bicycle brakes are divided into front and rear brakes, and the front brake has a great effect on the control of the speed when braking, however, with the passage of time, the number of times of using the front brake is also increasing, and the brake block thereon will gradually wear out, and finally, even if the brake cable is pulled to the last position, the front wheel cannot be decelerated or even locked, which will cause brake failure and ultimately affect the safety of personnel.

[0003] The existing patent No. 201420432502.7 discloses a bicycle front brake structure installed on both sides of the front wheel of a bicycle, which comprises a mounting frame, brake blocks symmetrically arranged on the inner side of the mounting frame, a driving device fixedly connected to one end of the brake block, a support for fixing the driving device to the outer side of the mounting frame, a position sensor fixedly arranged on the mounting frame, and a control panel connected to the position sensor and the driving device and connected to a power source. The position sensor can indirectly compensate for the wear of the brake block, improve the effect of the front brake, and avoid personnel casualties caused by brake failure.

[0004] However, the position sensor is arranged at the middle position of the brake block, and the brake block can be detected only when it is worn by half, and then the brake block is pushed forward by the driving device and the control panel to reset it, but the detection and adjustment accuracy is limited, which reduces the contact force between the brake block and the wheel before it is worn by half, thereby affecting the effect of the brake and increasing the safety of riding. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a bicycle front brake structure to solve the problems in the above-mentioned background art.

[0006] The utility model provides the following technical scheme: a bicycle front brake structure, which comprises a mounting frame and a brake pad, the brake pad is detachably installed on one side of the mounting frame, two thimbles are movably inserted into the brake pad, one end of the thimble is flush with the contact surface of the brake pad, the other end of the thimble penetrates the mounting frame and is connected to a support, the other end of the mounting frame is provided with an adjusting frame, an adjusting mechanism is detachably installed on the adjusting frame, the output end of the adjusting mechanism penetrates the mounting frame and is fixedly connected to the brake pad, and position sensors and controllers are arranged at the two ends of the adjusting mechanism.

[0007] Preferably, the sliding connection position of the mounting frame and the thimble is provided with a clamping block, and a plurality of barbed claws matched with the clamping block are elastically installed on the surface of the other end of the thimble.

[0008] Preferably, the adjusting mechanism comprises a motor, a shaft coupling, a lead screw and a internally threaded sleeve rod, wherein the motor is detachably installed in the middle of one side of the adjusting frame, the shaft coupling is detachably installed on the output shaft of the motor, the lead screw is fixedly connected with the shaft coupling, and the internally threaded sleeve rod is threadedly sleeved with the lead screw and one end of the internally threaded sleeve rod penetrates through the mounting frame and is rotationally connected with the brake pad.

[0009] Preferably, one end of the ejector pin is movably embedded with a steel ball.

[0010] Preferably, grooves for installing barbed claws are arranged on both sides of the ejector pin, and springs are arranged inside the grooves, and one end of the spring is connected with the barbed claw.

[0011] Preferably, the position sensor, the controller, the electrode and the shaft coupling are electrically connected.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses a two retractable needle is set up on the brake pad and carries out the real -time monitoring of wearing and tearing, when the brake pad wearing thickness becomes thin, the needle and the wheel contact move backward, make the support synchronous movement backward, when the position sensor detects the position numerical value of position distance and sends to the controller, opens the adjusting mechanism through the controller and drives the brake pad to wear and tear the same distance forward a little, greatly improved the precision of brake pad wear and tear adjustment, guarantee the contact friction of brake pad and wheel, thereby guarantee the brake effect, and then increase the safety of riding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the brake structure schematic diagram of the utility model.

[0015] Figure 2 It is the brake structure schematic diagram of the utility model. Figure 1 It is the brake structure schematic diagram of the utility model.

[0016] The signs are: 1, mounting frame, 2, brake pad, 3, ejector pin, 4, support, 5, position sensor, 6, controller, 7, adjusting frame, 8, motor, 9, shaft coupling, 10, lead screw, 11, internally threaded sleeve rod, 12, clamping block, 13, barbed claw, 14, spring. DETAILED DESCRIPTION

[0017] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is more clearly and explicitly defined.

[0018] The utility model provides a bicycle front brake structure, like Figures 1-2As shown, including the mounting frame 1 and brake pad 2, brake pad 2 is detachably mounted on one side of the mounting frame 1, the brake pad 2 is movably inserted with two thimbles 3, and one end of the thimble 3 is flush with the contact surface of the brake pad 2, the other end of the thimble 3 penetrates the mounting frame 1 and is connected to a bracket 4, the other end of the mounting frame 1 is provided with an adjusting frame 7, and the adjusting mechanism is detachably mounted on the adjusting frame 7, and the output end of the adjusting mechanism penetrates the mounting frame 1 and is fixedly connected with the brake pad 2, and the two ends of the adjusting mechanism are respectively provided with a position sensor 5 and a controller 6.

[0019] Two retractable thimbles 3 are provided on the brake pad 2 to monitor the wear in real time. When the brake pad 2 wears thin, the thimble 3 contacts the wheel and moves backward, causing the bracket 4 to move backward synchronously. At this time, the position sensor 5 detects the position value of the position distance 4 and sends it to the controller 6. The controller 6 opens the adjusting mechanism to drive the brake pad 2 to wear forward by the same distance, greatly improving the accuracy of the brake pad 2 wear adjustment, ensuring the contact friction force between the brake pad 2 and the wheel, thereby ensuring the braking effect and further increasing the safety of riding.

[0020] In this embodiment, the sliding connection position of the mounting frame 1 and the thimble 3 is provided with a clamping block 12, and the other end surface of the thimble 3 is elastically mounted with a plurality of barbs 13 adapted to the clamping block 12.

[0021] The clamping block 12 and the barb 13 form a barb structure to prevent the thimble 3 from moving forward and causing the position sensor 5 to misjudge, further improving the accuracy of adjusting the brake pad 2.

[0022] In this embodiment, the adjusting mechanism includes a motor 8, a shaft coupling 9, a lead screw 10, and an internally threaded sleeve rod 11. The motor 8 is detachably mounted on one side of the middle part of the adjusting frame 7, the shaft coupling 9 is detachably mounted on the output shaft of the motor 8, the lead screw 10 is fixedly connected with the shaft coupling 9, and the internally threaded sleeve rod 11 is threadedly connected with the lead screw 10 and one end thereof penetrates the mounting frame 1 and is rotatably connected with the brake pad 2.

[0023] The motor 8 and the shaft coupling 9 drive the lead screw 10 to rotate, and under the threaded connection of the lead screw 10 and the internally threaded sleeve rod 11, the internally threaded sleeve rod 11 drives the brake pad 2 to move forward, greatly improving the accuracy of the adjustment.

[0024] In this embodiment, one end of the thimble 3 is movably embedded with a steel ball, which greatly reduces the friction between the thimble 3 and the wheel under the action of the rolling steel ball, avoiding unnecessary wear.

[0025] In the embodiment, the two sides of the ejector pin 3 are provided with grooves for installing the barb claw 13, and the inside of the groove is provided with a spring 14, and one end of the spring 14 is connected with the barb claw 13, and in the initial state, one end of the barb claw 13 extends out of the groove under the elastic force of the spring 14, so that the barb claw 13 is in contact with the upper clamping block 12, when the ejector pin 3 is retracted, the barb claw 13 is in contact with the upper clamping block 12, and under the spring 14, one end of the barb claw 13 is retracted into the groove, when the barb claw 13 completely passes through the clamping block 12, under the elastic force, the barb claw 13 is reset and clamped with the lower clamping block 12, so that the fixation of the ejector pin 3 is realized, and the forward movement of the ejector pin 3 is prevented.

[0026] In the embodiment, the position sensor 5, the controller 6, the electrode and the shaft coupling 9 are electrically connected, so as to realize the transmission of various data.

[0027] It should be noted that: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0028] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, but any equivalent modification or change made by the ordinary skilled in the art according to the disclosed content of the present application should be included in the protection scope recorded in the claims.

Claims

1. A bicycle front brake structure, comprising a mounting frame (1) and a brake pad (2), wherein the brake pad (2) is detachably mounted on one side of the mounting frame (1), and is characterized in that: Two ejectors (3) are movably connected to the brake pad (2), and one end of the ejector (3) is flush with the contact surface of the brake pad (2), and the other end of the ejector (3) passes through the mounting frame (1) and is connected to a bracket (4). The other end of the mounting frame (1) is provided with an adjustment frame (7), and an adjustment mechanism is detachably installed on the adjustment frame (7), and the output end of the adjustment mechanism passes through the mounting frame (1) and is fixedly connected to the brake pad (2). The two ends of the adjustment are respectively provided with a position sensor (5) and a controller (6).

2. A bicycle front brake structure according to claim 1, characterized in that: A clamping block (12) is provided at the sliding connection position between the mounting frame (1) and the ejector pin (3), and a plurality of barbed claws (13) adapted to the clamping block (12) are elastically mounted on the other end surface of the ejector pin (3).

3. The bicycle front brake structure according to claim 1, characterized in that: The adjustment mechanism comprises a motor (8), a coupling (9), a screw rod (10) and an internal threaded sleeve rod (11), wherein the motor (8) is detachably mounted on the middle portion of one side of the adjustment frame (7), the coupling (9) is detachably mounted on the output shaft of the motor (8), the screw rod (10) is fixedly connected to the coupling (9), and the internal threaded sleeve rod (11) is threadedly sleeved with the screw rod (10) and one end of the internal threaded sleeve rod passes through the mounting frame (1) and is rotatably connected to the brake pad (2).

4. The bicycle front brake structure according to claim 1, characterized in that: A steel ball is movably embedded in one end of the ejector pin (3).

5. The bicycle front brake structure according to claim 1, characterized in that: Grooves for mounting barbed claws (13) are provided on both sides of the ejector pin (3), and a spring (14) is provided inside the groove, and one end of the spring (14) is connected to the barbed claw (13).

6. The bicycle front brake structure according to claim 1, characterized in that: The position sensor (5), the controller (6), the electrode, and the coupling (9) are electrically connected.

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