brake

Abstract

This invention relates to a brake, comprising a bracket, a guide mechanism, and a braking mechanism. The braking mechanism can translate relative to the bracket via the guide mechanism. The guide mechanism includes a guide pin and a pin hole tube axially arranged along the translation direction. The pin hole tube is sleeved on the guide pin and can slide axially relative to the guide pin. The guide pin is disposed on the bracket, and the pin hole tube is disposed on the braking mechanism. The bracket has two circumferential support portions disposed around the brake disc, spaced apart circumferentially. The braking mechanism is disposed between the two circumferential support portions. A guide mechanism is disposed on each side of the braking mechanism, and the guide pins of the two guide mechanisms are respectively fixed to the two circumferential support portions. The guide mechanisms are integrally disposed within the outer edge of the support portions along the axial direction. The brake of this invention has the advantage of a compact structure and can be installed in smaller wheel hubs.

Description

Technical Field

[0001] This invention relates to brakes. Background Technology

[0002] A typical brake structure includes a brake disc, a bracket, and a braking mechanism. The bracket is located at the edge of the brake disc, while the braking mechanism relies on a piston-driven translation relative to the bracket to achieve braking. Brakes generally also include a guide mechanism, which guides the braking mechanism for linear translation, thus preventing misalignment. However, existing guide mechanism designs are not sufficiently optimized, resulting in a relatively large overall brake size.

[0003] For example, Chinese patent application CN116877604A discloses a brake, specifically disclosing a mechanism for providing a guiding function. The brake's structure includes a relatively movable housing and a bracket. Tubes are provided on the connecting portions on both sides of the bracket, and guide pins are fixed on both sides of the housing. The guide pins are inserted into bushings, which are then held in place by the tubes. Therefore, when the bracket moves, the tubes on the bracket slide on the guide pins, and the tubes and guide pins provide a guiding function for the linear movement of the bracket. After installation, the bracket is located in a narrow space at the front end of the wheel rim. However, in this disclosure, the tubes are positioned on the bracket and obviously occupy a large space, easily causing interference with the inner wall of the wheel rim. Summary of the Invention

[0004] The main objective of this invention is to provide a brake structure with a more compact guiding structure.

[0005] To achieve the above objectives, the present invention provides a brake, comprising a bracket, a guide mechanism, and a braking mechanism. The braking mechanism can be axially translated relative to the bracket via the guide mechanism. The guide mechanism includes a guide pin and a pin hole tube disposed along the axial direction. The pin hole tube is sleeved on the guide pin and can slide axially relative to the guide pin.

[0006] The guide pin is mounted on the bracket.

[0007] The pin hole tube is installed on the braking mechanism.

[0008] The bracket has two circumferential support portions disposed around the brake disc, spaced apart circumferentially. The braking mechanism is disposed between the two circumferential support portions. A guide mechanism is disposed on each side of the braking mechanism, and guide pins of the two guide mechanisms are respectively fixed to the two circumferential support portions.

[0009] The guide mechanism is integrally disposed along the axial direction within the outer edge of the circumferential support.

[0010] In some embodiments of the present invention, the circumferential support portion is provided with an assembly hole that extends along the axial direction, the guide pin has a fixed end, the fixed end has a threaded hole that extends along the axial direction, and a bolt passes through the assembly hole from the outside and engages with the threaded hole of the fixed end to fasten the guide pin to the assembly hole.

[0011] In some embodiments of the present invention, the fixed end has a flange flange.

[0012] In some embodiments of the present invention, the guide pin has a cylindrical pin rod, and the pin hole tube has a pin hole that slides with the pin rod.

[0013] In some embodiments of the present invention, the pin and the pin hole are anti-rotationally fitted.

[0014] In some embodiments of the present invention, the pin has one or more edges for preventing rotation.

[0015] In some embodiments of the present invention, the braking mechanism includes:

[0016] The outer friction pad and the inner friction pad are configured to be positioned opposite each other on the outer and inner sides of the brake disc along the axial direction.

[0017] The drive sub-mechanism is axially disposed on the inner side of the inner friction plate and connected to the inner friction plate.

[0018] The connecting arm is positioned between the two peripheral fixed support parts and spans the outer friction plate and drive sub-mechanism via the outer periphery of the brake disc.

[0019] The pin-hole tube is fixed on both sides of the connecting wall.

[0020] In some embodiments of the present invention, the bracket further includes an outer support portion for supporting the outer friction piece and an inner support portion for supporting the inner friction piece, wherein the circumferential support portion connects the outer support portion and the inner support portion.

[0021] In some embodiments of the present invention, the drive submechanism includes a motor and a piston, the motor is disposed on one side of the piston along the circumferential direction, the pin hole tube is symmetrically arranged on both sides of the piston in the circumferential direction, and the circumferential distance between the guide mechanism and the piston is smaller than the circumferential distance between the motor and the piston.

[0022] In some embodiments of the present invention, a dust cover for the guide pin is provided between the guide pin and the pin hole tube.

[0023] The brake of the present invention has the advantage of compact structure and can be installed in a smaller wheel hub. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the brake in the embodiment.

[0025] Figure 2 This is another schematic diagram of the brake.

[0026] Figure 3 This is a partial schematic diagram of the brake being installed inside the wheel hub.

[0027] Figure 4 This is a schematic diagram of the brake mechanism housing.

[0028] Figure 5 This is a schematic diagram of the support structure.

[0029] Figure 6 for Figure 2 Sectional view of plane AA.

[0030] Figure 7 A schematic diagram of the guide pin structure.

[0031] Figure 8 This is a schematic diagram showing the location of the pin hole tube.

[0032] Figure label:

[0033] 100 - Braking mechanism;

[0034] 110-Cylinder barrel, 120-Connecting arm, 130-Cylinder block, 140-Motor;

[0035] 200-Standard;

[0036] 210 - Circumferential support part, 211 - Outer edge of circumferential support part, 220 - Assembly hole, 230 - Outer support part, 240 - Inner support part.

[0037] 300 - Guiding mechanism;

[0038] 301 - outer end face of guide mechanism, 310 - guide pin, 311 - fixed end, 312 - pin rod, 313 - flange flange, 314 - threaded hole, 315 - edge, 320 - pin hole tube, 321 - pin hole, 330 - guide pin dust cover, 340 - bolt;

[0039] 400-Brake Disc;

[0040] 500-rim,

[0041] α-Axial direction. Detailed Implementation

[0042] In embodiments related to the brake, its structure mainly includes a brake disc, a bracket, a guide mechanism, and a braking mechanism. The bracket is disposed on the edge of the brake disc, and the braking mechanism is mounted on the bracket. The braking mechanism and the brake disc are connected via the guide mechanism. The brake disc can rotate relative to the bracket, and the braking mechanism can, during braking, translate axially relative to the bracket via the guide mechanism to clamp the brake disc for friction braking.

[0043] To make the brake structure more compact, this invention mainly improves the structure and arrangement of its guiding mechanism. Specifically, the guiding mechanism includes a guide pin and a pin hole tube arranged along the axial direction. The pin hole tube is sleeved on the guide pin and can slide relative to the guide pin axially.

[0044] The guide pin is mounted on the bracket.

[0045] The pin hole tube is installed on the braking mechanism.

[0046] The bracket has two circumferential support portions disposed around the brake disc, spaced apart circumferentially. The braking mechanism is disposed between the two circumferential support portions. A guide mechanism is disposed on each side of the braking mechanism, and guide pins of the two guide mechanisms are respectively fixed to the two circumferential support portions.

[0047] The guide mechanism is integrally disposed along the axial direction within the outer edge of the circumferential support.

[0048] The brake structure of this invention is better adapted to the internal structure of the wheel hub. The inner side of the wheel hub has a smaller radial distance and less space. This invention places a smaller guide pin on the bracket, while a larger pin hole tube, fitted outside the guide pin, is placed on the braking mechanism located inside the bracket. The entire guide structure is moved rearward to within the outer edge of the support, allowing for excellent adaptation to the internal structure of the wheel hub and avoiding interference between the guide mechanism and the small-sized inner wall of the wheel hub.

[0049] For the sake of clarity in this article, "outer side" refers to the side of the friction pad brake that is relatively closer to the wheel hub, and "inner side" refers to the side of the friction pad brake that is relatively farther from the wheel hub. "Circumferential" refers to the circumferential direction of the brake disc, that is, the direction of rotation of the wheel hub and the brake disc. "Axial" refers to the direction of the rotation axis of the brake disc, that is, the direction of the rotation axis of the wheel hub.

[0050] The braking principle of a brake is known and will only be briefly described in this article. A specific structure of the braking mechanism includes an outer friction pad and an inner friction pad, which are positioned axially opposite each other on the outer and inner sides of the brake disc. It also includes a drive sub-mechanism, axially positioned inside the inner friction pad and connected to it. A connecting arm is also included, positioned between the two peripheral support portions and spanning the outer friction pad and drive sub-mechanism across the outer periphery of the brake disc. When the drive sub-mechanism drives the inner friction pad close to the inner surface of the brake disc, the reaction force of this driving force causes the drive sub-mechanism to drive the outer friction pad in the opposite direction via the connecting arm, thus bringing it closer to the outer surface of the friction pad. The inner and outer friction pads together clamp the brake disc, achieving braking.

[0051] In the above structure, a specific configuration of the guiding mechanism can be referred to. Figure 2 . Figure 2 Below is the outer side of the friction braking mechanism. On the circumferential support portion 210 of the bracket 200, the outer end face 301 of the guide mechanism is located behind the outer edge 211 of the circumferential support portion, and the guide mechanism extends rearward along the axial direction. Furthermore, a guide pin 310 with a smaller radius is connected to the outer circumferential support portion 210, and a pin hole tube 320 with a larger radius is connected to the braking mechanism 100 at a relatively inner position. See also... Figure 3 When the brake is installed in the rim 500, it can be seen that the inner radius of the rim 500 gradually shrinks outward along the axial direction, and the space becomes smaller. The guide mechanism is located behind the outer edge of the circumferential support. The guide pin with a smaller radius is set on the outside, and the pin hole tube with a larger radius is set on the inside. Its volume also gradually shrinks from the inside to the outside, which is adapted to the internal space of the rim and avoids interference with the rim.

[0052] Specifically, one specific arrangement of the guide pin in the bracket can be referred to... Figures 5 to 7 The circumferential support portion 210 is provided with an assembly hole 220 that extends along the axial direction. The guide pin has a fixed end 311, which has a threaded hole 314 that extends along the axial direction. A bolt 340 passes through the assembly hole 220 from the outside and engages with the threaded hole of the fixed end 311 to fasten the guide pin to the assembly hole 220.

[0053] In some embodiments, reference Figure 7 The fixed end 311 has a flange 313, which helps to secure the guide pin and the mounting hole more firmly.

[0054] In some embodiments, the guide pin has a cylindrical pin 312, and the pin hole tube 320 has a pin hole 321 that slides with the pin 312. The sliding engagement between the pin hole and the pin 321 helps the braking mechanism to translate more smoothly.

[0055] In some embodiments, the pin and the pin hole are anti-rotationally fitted. One type of anti-rotation fit involves the pin having one or more edges for preventing rotation. For example... Figure 7 As shown, the pin is a cylindrical structure with a cut surface, and an edge 315 for preventing rotation is formed between the cut surface and the circumferential surface, thereby restricting the rotation between the pin hole tube and the guide pin.

[0056] The present invention will be further described below with reference to a specific embodiment.

[0057] refer to Figure 1 The brake includes a braking mechanism 100, a bracket 200, and a guide mechanism 300.

[0058] The bracket 200 is disposed on the edge of the brake disc, and the braking mechanism 100 is axially translated on the bracket via the guide mechanism 300.

[0059] refer to Figure 5 The support structure includes two circumferential support portions 210 disposed around the brake disc. The two circumferential support portions 210 are spaced apart circumferentially. One is an outer support portion 230 for supporting the outer friction pad, and the other is an inner support portion 240 for supporting the inner friction pad. The circumferential support portions 210 connect the outer support portion 230 and the inner support portion 240. Mounting holes 220 extending axially are provided on both circumferential support portions 210.

[0060] refer to Figure 2 The braking mechanism 100 is disposed between the two circumferential support portions 210. (Referring to a reference...) Figure 1 , 2 In the brake mechanism 100, the connecting arm 120 for connecting the outer friction pad and the drive sub-mechanism spans across the brake disc. In this embodiment, the guide mechanism 300 is connected to both sides of the connecting arm 120. The main structure of the brake mechanism in this invention is prior art, and for the sake of clearly illustrating the improved structure, some parts of the brake mechanism are omitted in the drawings.

[0061] refer to Figures 6-8The guiding mechanism 300 includes a guide pin 310 and a pin hole tube 320 arranged along the axial direction. The pin hole tube 320 is sleeved on the guide pin 310 and can slide relative to the guide pin axially. The guide pin 310 has a fixed end 311 and a cylindrical pin 312. The fixed end 311 has a threaded hole 314 and a flange 313 arranged along the axial direction. A bolt 340 passes through the mounting hole 220 from the outside and engages with the threaded hole 314 of the fixed end 311 to fasten the guide pin 310 to the mounting hole 220. After fixing, the outer end face 301 of the guiding mechanism, i.e., the outer end face of the bolt, is located inside the outer edge of the circumferential support portion 210, and the guide pin extends rearward in the axial direction. The pin 312 has multiple edges 315 for anti-rotation. The pin hole tube 320 is disposed on both sides of the connecting arm 120, and the pin hole 321 in the pin hole tube 320 slides with the pin rod 312. (Reference) Figure 8 In the braking mechanism 100, the motor 140 is circumferentially positioned on one side of the piston 130, and the pin hole tubes are symmetrically arranged on both sides of the piston's circumference. The circumferential distance between the guide mechanism 300 and the piston 130 is smaller than the circumferential distance between the motor 140 and the piston 130. Thus, through the axial sliding of the pin hole tube 320 relative to the guide pin 310, the braking mechanism 100, guided by the guide mechanism, also translates axially relative to the support. Furthermore, the smaller radius guide pin 310 is positioned on the outer side, and the larger radius pin hole tube 320 is positioned on the inner side, with its volume gradually decreasing from the inner to the outer side, adapting to the internal space of the wheel rim. Moreover, the closer circumferential spacing of the guide mechanisms 300 results in a more compact overall design, avoiding interference with the wheel rim.

[0062] The embodiments described in this invention are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the scope of protection of this invention.

Claims

1. A brake, comprising a bracket, a guide mechanism, and a braking mechanism, wherein the braking mechanism can be axially translated relative to the bracket via the guide mechanism, characterized in that... The guiding mechanism includes a guide pin and a pin hole tube arranged along the axial direction. The pin hole tube is sleeved on the guide pin and can slide relative to the guide pin along the axial direction. The guide pin is mounted on the bracket. The pin hole tube is installed on the braking mechanism. The bracket has two circumferential support portions disposed around the brake disc, spaced apart circumferentially. The braking mechanism is disposed between the two circumferential support portions. A guide mechanism is disposed on each side of the braking mechanism, and the guide pins of the two guide mechanisms are respectively fixed to the two circumferential support portions. The guide mechanism is integrally disposed along the axial direction within the outer edge of the circumferential support.

2. The brake as described in claim 1, characterized in that: The circumferential support portion is provided with an assembly hole that passes through the axial direction. The guide pin has a fixed end, and the fixed end has a threaded hole that is provided along the axial direction. The bolt passes through the assembly hole from the outside and engages with the threaded hole of the fixed end to fasten the guide pin to the assembly hole.

3. The brake as described in claim 2, characterized in that... The fixed end has a flange flange.

4. The brake as described in claim 1 or 2, characterized in that... The guide pin has a cylindrical pin rod, and the pin hole tube has a pin hole that slides with the pin rod.

5. The brake as described in claim 4, characterized in that... The pin and the pin hole are fitted together in a non-rotating manner.

6. The brake as described in claim 5, characterized in that... The pin has one or more edges for preventing rotation.

7. The brake as claimed in claim 2, characterized in that... The braking mechanism includes: The outer friction pad and the inner friction pad are configured to be positioned opposite each other on the outer and inner sides of the brake disc along the axial direction. The drive sub-mechanism is axially disposed on the inner side of the inner friction plate and connected to the inner friction plate. The connecting arm is positioned between the two peripheral fixed support parts and spans the outer friction plate and drive sub-mechanism via the outer periphery of the brake disc. The pin-hole tube is fixed on both sides of the connecting wall.

8. The brake as claimed in claim 7, characterized in that... The bracket further includes an outer support portion for supporting the outer friction plate and an inner support portion for supporting the inner friction plate, wherein the circumferential support portion connects the outer support portion and the inner support portion.

9. The brake as claimed in claim 7, characterized in that... The drive submechanism includes a motor and a piston. The motor is arranged on one side of the piston along the circumferential direction. The pin hole tube is symmetrically arranged on both sides of the piston along the circumferential direction. The circumferential distance between the guide mechanism and the piston is smaller than the circumferential distance between the motor and the piston.

10. The brake as claimed in claim 1, characterized in that... A dust cover for the guide pin is provided between the guide pin and the pin hole tube.

Images