A brake shoe mounting structure for a self-amplifying disc brake

Abstract

The present invention discloses a brake shoe installation structure of a self-amplifying disc brake, including a body, a positioning piece and a positioning rod are arranged on the body, a positioning member is arranged on the positioning piece, the positioning member is connected to the positioning piece and the positioning rod at the same time, and the positioning member can move horizontally relative to the positioning piece and the positioning rod; a second brake shoe is arranged in the positioning member. Because the existing single-sided double-bevel brake is sometimes felt to have insufficient braking force when it is commercialized. This solution utilizes the braking force of the brake disc on the second brake shoe to help with braking, which can increase the braking force by about 1 times. In this way, the braking force can be increased by nearly 1 times under the same operating force, or the control force can be reduced by 1 times under the same braking force, which can increase the braking force and reduce the control force, so that its performance of large braking force and small control force can be fully reflected.

Description

Technical Field

[0001] The invention relates to the braking field of transportation vehicles such as automobiles and motorcycles, and in particular to a brake shoe mounting structure of a self-energizing disc brake. Background Art

[0002] From the perspective of the prior art, the problem of self-enhancing of disc brakes has not been solved until now. And the brake authority in this field says that the self-enhancing ratio of this self-enhancing disc brake is very large and the progressive effect is very strong. The authorized application number is: 201310534271.0, and the name is: Single-sided double-bevel disc brake. The Chinese patent solves this problem, that is, the self-enhancing problem of disc brakes. However, in the process of productization, it was found that its self-enhancing effect can be increased, and its progressive self-enhancing effect is not as strong as the brake authority in this field said. Its self-enhancing force is relatively small and cannot meet actual needs. Summary of the invention

[0003] The purpose of the present invention is to overcome the problems raised in the above background technology and provide a brake shoe mounting structure of a self-energizing disc brake, which utilizes the braking force generated by all brake shoes to make the self-energizing force larger to meet actual needs.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] A brake shoe mounting structure of a self-energizing disc brake comprises a body, a positioning piece and a positioning rod are arranged on the body, a positioning piece is arranged on the positioning piece, the positioning piece is connected to the positioning piece and the positioning rod at the same time, and the positioning piece can move horizontally relative to the positioning piece and the positioning rod; a brake shoe 2 is arranged in the positioning piece. The currently authorized single-sided double-bevel disc brake has been found to have an increased self-energizing effect during the productization process, and its progressive self-energizing effect is not as strong as the braking authority in this field says. It only uses half of the braking force generated by the brake shoe for self-energization. Practice has found that this is not enough, and the self-energizing force is relatively small. In order to solve the problem of relatively small self-energizing force of the single-sided double-bevel brake, this solution is provided with a positioning piece and a positioning rod on the body, a positioning piece is arranged on the positioning piece, the positioning piece is connected to the positioning piece and the positioning rod at the same time, and the positioning piece can move horizontally relative to the positioning piece and the positioning rod; a brake shoe 2 is arranged in the positioning piece. This structure utilizes the braking force generated by the brake shoe on the other side, thereby producing a new, self-enhancing disc brake with greater self-enhancing force, which increases its self-enhancing force by about double, thereby making its performance better, so that it can better meet the needs of the product.

[0006] Furthermore, a strip hole is provided on the positioning piece, and the positioning sheet passes through the strip hole, and there is a gap between the positioning sheet and the inner wall of the strip hole. In order to allow the positioning piece to have enough space to move, the corresponding mounting hole is designed as a strip hole, which matches the structure of the positioning sheet, so that the positioning piece can be in place when it moves horizontally.

[0007] Furthermore, an elliptical through hole is provided on the positioning member, and the positioning rod passes through the elliptical through hole, and there is a gap between the positioning rod and the inner wall of the elliptical through hole. In order to allow the positioning member to have enough space to move, the corresponding mounting hole is designed as an elliptical through hole, which matches the structure of the positioning rod, so that the positioning member can be in place when it moves horizontally.

[0008] In the authorized single-sided double-bevel brake, only one brake shoe 1 participates in the self-amplification effect, and the brake shoe 2 on the other side does not play a role in the self-amplification of the brake. In order to utilize the braking force of the brake shoe 2 on the other side to help the self-amplification, it is necessary to strictly control the movement of the brake shoe 2 on the other side so that it can only move in the required direction, and at the same time, the braking force of the brake disc acting on it is transmitted to the brake shoe 1 that can perform self-amplification, thereby greatly increasing the self-amplification force and achieving the required purpose. The present invention mainly solves the problem of strictly controlling the movement of the brake shoe 2 and transmitting the braking force of the brake disc acting on it to the brake shoe 1. Therefore, a part positioning member is added in the design, and the brake shoe 2 is installed in it. It is tightly matched with the brake shoe 2, and the movement of the brake shoe 2 is completely controlled by it. There is a cam on the positioning member, and this cam can act on the brake shoe 2 by the braking force of the brake disc acting on it, thereby increasing the braking force of the brake by about half, solving the problem that the braking force of the authorized single-sided double-bevel brake sometimes seems insufficient.

[0009] Another structure can also directly manufacture the steel back of the brake shoe 2 into their assembled appearance, just like welding these two parts together.

[0010] Another structure is that the brake shoe one can also be made to look like the brake shoe two, that is, the brake shoe one is manufactured with a cam like the brake shoe two, and the brake shoe two is provided with a groove like the brake shoe one.

[0011] In summary, the present invention has the following beneficial effects compared with the prior art: Since the existing single-sided double-bevel brake is sometimes felt to have insufficient braking force when it is commercialized, the present solution utilizes the braking force of the brake disc on the brake shoe to help with braking, which can increase the braking force by about 1 times. In this way, the braking force can be increased by nearly 1 times under the same operating force, or the control force can be reduced by 1 times under the same braking force, which can increase the braking force and reduce the control force, so that its performance of large braking force and small control force can be fully reflected. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0013] Figure 1 This is an assembly diagram of the present invention in use.

[0014] Figure 2 Based Figure 1 Schematic diagram of the A-direction structure.

[0015] Figure 3 for Figure 2 Schematic diagram of the left-facing structure.

[0016] Figure 4 for Figure 3 Top view of the .

[0017] Figure 5 It is a schematic diagram of the structure of the positioning part.

[0018] Figure 6 for Figure 5 Schematic diagram of the left-facing structure.

[0019] Figure 7 for Figure 6 Top view of the .

[0020] Figure 8 This is a schematic diagram of the A---A direction structure of another structure.

[0021] Fig. 9 for Figure 8 Schematic diagram of the left-facing structure.

[0022] Fig.10 for Figure 8 Top view of the .

[0023] The names corresponding to the reference numerals in the accompanying drawings are:

[0024] 1-positioning piece, 2-positioning plate, 3-positioning rod, 4-brake shoe 2, 5-strip hole, 6-elliptical through hole, 7-brake shoe 1, 8-brake disc, 9-machine body. Implementation

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention. Example

[0026] like Figures 1 to 4 As shown, the brake shoe 7 of this embodiment is installed on the self-enhancing inclined plate; the self-enhancing inclined plate is connected with an inclined surface of the control inclined plate by an inclined surface, which is also called the enhancing working inclined surface. The self-enhancing inclined plate is driven by the control inclined plate, and the control inclined plate is connected with the inclined surface of the machine body or the inclined surface of the compensation plate by an inclined surface with a larger angle than the enhancing working inclined surface, which is also called the controlling working inclined surface. The inclination direction of these two inclined surfaces is consistent; the control inclined plate is also connected or connected with the backstop device; the backstop device can be composed of a structure, mechanism, device, and parts with high mechanical efficiency in forward transmission and low efficiency in reverse transmission, that is, the efficiency is high when the control device transmits motion and force to the control inclined plate and the enhancing inclined plate, and the efficiency is low when the control inclined plate transmits force to the control device in reverse, so that the reverse force on the control device is small. The backstop device can be composed of a thread, a cam, an inclined surface, a turbine worm, a rod system mechanism, a structure, and parts; the backstop device can be a group or multiple groups in series; the backstop device is connected to the control device and driven by the control device. The control device can be electrical, hydraulic, pneumatic, human, etc. The control device can be composed of a handle, a hydraulic system, an electric motor, a pneumatic system, an electric system, etc.

[0027] The direction of the inclined surfaces of the control ramp and the booster ramp is consistent with the direction of the brake disc. The direction is from the large end to the small end. The control ramp is also connected to the backstop device and driven by it. In this way, the force exerted by the control ramp on the control device (mechanism) through the backstop device is very small, thereby achieving self-amplification. The working inclined surfaces that are in contact with each other in the above-mentioned parts can be a single inclined surface, can be composed of several sections of inclined surfaces, can also be a curved surface or several curved surfaces, or a combination of inclined surfaces and curved surfaces. Rolling bodies can be installed between the inclined surfaces where the above-mentioned parts are in contact, preferably needle rollers or rollers, steel balls. The parking brake wire rope can also be connected to the booster ramp or the control ramp to form a parking brake. The connection method of other parts such as the body, the bracket, and another brake shoe is basically the same as that of the commonly used disc brakes.

[0028] Generally speaking, when the working angle of the curved surface or inclined surface is large, the force increase is relatively small, and the separation is easy, and the drag resistance after separation is relatively small. However, when the working angle of the curved surface or inclined surface is small, the force increase is large, and the drag resistance after separation is large. The working angle of the force-increasing ramp is smaller than that of the control ramp. When the angle difference is relatively large, especially after the backstop device is installed, the force it acts on the control device in the opposite direction is relatively small, and it produces unexpected effects. At this time, it has the advantages of large force increase of small angle ramps, and good separation at large angles and small drag resistance after releasing the brake. It combines the advantages of working at two angles without the disadvantages of working at two angles. This is the most magical part of this disc brake.

[0029] The main working curved surfaces on the force-increasing ramp, the control ramp and the abutting parts can be composed of inclined surfaces, arc surfaces, hyperbolic surfaces, parabolic surfaces and the like; they can also be composed of several sections of curved surfaces; they can also be composed of a mixture of the above curved surfaces; they can also be composed of designed curved surfaces as required. Rolling bodies can be installed between the abutting parts of the force-increasing ramp, the control ramp and the main working curved surfaces on the abutting parts, preferably needle rollers, rollers or steel balls.

[0030] The brake shoe 2 4 is installed in the positioning member 1. The positioning piece 2 and the positioning rod 3 are arranged on the body 9. The positioning piece 2 is provided with the positioning member 1. The positioning member 1 is connected with the positioning piece 2 and the positioning rod 3 at the same time, and the positioning member 1 can move horizontally relative to the positioning piece 2 and the positioning rod 3. The positioning member 1 is provided with a strip hole 5. The positioning piece 2 passes through the strip hole 5, and there is a gap between the positioning piece 2 and the inner wall of the strip hole 5. The positioning member 1 is provided with an elliptical through hole 6. The positioning rod 3 passes through the elliptical through hole 6, and there is a gap between the positioning rod 3 and the inner wall of the elliptical through hole 6.

[0031] The present invention solves the problem of adding a new structure on the basis of the existing single-sided double-bevel brake to solve the problem that the kinetic energy of the vehicle cannot be fully utilized to help the brake to brake. The specific structure is as follows: the brake shoe 2 4 is installed in the positioning member 1, and the positioning member 1 is installed on the positioning piece 2 and the positioning rod 3 welded on the body 9, so that the positioning member 1 can only be attached to the Figure 2 As shown, it can move left and right, but cannot move or rotate in other directions. According to the test, this movement is relatively small. When the brake is applied, the gap between the brake shoe 1 7 and the brake shoe 2 4 and the brake disc 8 is eliminated, and the braking force of the brake disc 8 on the brake shoe 1 7 and the brake shoe 2 4 moves the brake shoe 1 7 and the brake shoe 2 4 in the direction of the rotation of the brake disc 8, as shown in the attached figure. Figure 2 As shown, the brake shoe 24 moves to the right, Figure 4The middle brake shoe 1 7 and the brake shoe 2 4 both move upward (in the direction of V). When the brake shoe 1 7 moves in the direction of rotation of the brake disc 8, the brake generates a progressive self-enhancing force under the action of the self-enhancing parts, etc., so that the braking force generated is much greater than the braking force that can be generated by the input control force. According to foreign data, they believe that the progressive self-enhancing force generated at this time is very large. However, their understanding is wrong, because they have not solved the problem of separation after the disc brake self-enhancing. The mechanism will self-lock after the brake is braked, and the brake cannot be separated at all. From our test results, it is sometimes not enough to use the braking force of only one brake shoe to help braking, so the present invention is used to solve the problem of insufficient self-enhancing force. When the brake is braking, the braking force of the brake disc acting on the brake shoe 1 7 can generate self-enhancing force. If we also use the braking force of the brake disc acting on the brake shoe 2 4, the self-enhancing force can be doubled. When braking, the braking force exerted by the brake disc on the brake shoe 2 4 causes the brake shoe 2 4 to move rightward, which pushes the positioning member 1 7 to move rightward as well. At this time, the cam on the positioning member applies this braking force to the brake shoe 1 7, and the direction is consistent with the direction of the self-enhancement of the brake shoe 1 7, so that the self-enhancement of the single-sided double-bevel brake that we have authorized can be increased by nearly one-fold. Therefore, this structure is mainly for the single-sided double-bevel brake patent that we have authorized, and may not be very useful for other brakes. Example

[0032] The structure of this embodiment is basically the same as that of the embodiment 1, except that the steel back of the brake shoe 24 is directly manufactured into the assembled state, just like welding these two parts together, as shown in the attached figure. Figure 5 , Attachment Figure 6 , Attachment Figure 7 shown. Example

[0033] The structure of this embodiment is basically the same as that of the embodiment 1, except that the brake shoe 1 7 can be made into the shape of the brake shoe 2 4, that is, the brake shoe 1 7 is provided with a protruding claw like the brake shoe 2 4, and the brake shoe 2 4 is provided with a groove like the one on the brake shoe 1 7. When they are matched, the problem of doubling the self-amplifying force can still be solved like the previous solution. Figure 8 , Fig. 9 , Fig.10 shown.

[0034] The present invention utilizes the braking force of the brake disc on the brake shoe to help with braking, which can increase the braking force by about 1 times. In this way, the braking force can be increased by nearly 1 times under the same operating force, or the control force can be reduced by 1 times under the same braking force. In this way, the braking force can be increased and the control force can be reduced, so that its performance of large braking force and small control force can be fully reflected.

[0035] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A brake shoe mounting structure for a self-energizing disc brake, Features: The invention comprises a machine body (9), wherein a positioning piece (2) and a positioning rod (3) are arranged on the machine body (9), a positioning member (1) is arranged on the positioning piece (2), the positioning member (1) is connected to the positioning piece (2) and the positioning rod (3) at the same time, and the positioning member (1) can move horizontally relative to the positioning piece (2) and the positioning rod (3); a brake shoe 2 (4) is arranged in the positioning member (1); the brake shoe mounting structure is used for a single-sided double-bevel brake, and comprises a brake shoe 1 (7), the brake shoe 1 ( 7) is installed on the self-enhancing inclined plate, the inclined surface of the self-enhancing inclined plate is in contact with an inclined surface of the control inclined plate, the self-enhancing inclined plate is driven by the control inclined plate, the control inclined plate is in contact with the inclined surface of the machine body or the inclined surface of the compensation plate, and the control inclined plate is also in contact with or connected to the backstop device. When braking, the braking force exerted by the brake disc on the brake shoe 2 (4) causes the brake shoe 2 (4) to move rightward, which pushes the positioning member 1 (1) to move rightward. At this time, the pawl on the positioning member (1) applies this braking force to the brake shoe 1 (7).

2. The brake shoe mounting structure of a self-energizing disc brake according to claim 1, Features: The positioning piece (1) is provided with a strip-shaped hole (5), the positioning piece (2) passes through the strip-shaped hole (5), and there is a gap between the positioning piece (2) and the inner wall of the strip-shaped hole (5).

3. The brake shoe mounting structure of a self-energizing disc brake according to claim 1, Features: The positioning member (1) is provided with an elliptical through hole (6), the positioning rod (3) passes through the elliptical through hole (6), and a gap exists between the positioning rod (3) and the inner wall of the elliptical through hole (6).

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