CN220354341U - Mute type air pressure disc brake - Google Patents
Mute type air pressure disc brake Download PDFInfo
- Publication number
- CN220354341U CN220354341U CN202322125957.6U CN202322125957U CN220354341U CN 220354341 U CN220354341 U CN 220354341U CN 202322125957 U CN202322125957 U CN 202322125957U CN 220354341 U CN220354341 U CN 220354341U
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- CN
- China
- Prior art keywords
- guide pin
- short guide
- rubber
- brake
- brake caliper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 239000000084 colloidal system Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model relates to a mute air pressure disc brake, which comprises a brake bracket and a brake caliper body, wherein a long guide pin guide mechanism and a short guide pin guide mechanism are arranged between the brake caliper body and a brake; the short guide pin guide mechanism comprises a short guide pin which is fixedly arranged on the braking bracket; the brake caliper comprises a brake caliper body, a rubber bushing and a connecting sleeve, wherein the rubber bushing and the connecting sleeve are fixedly arranged in a mounting hole of the brake caliper body, the lower end of the connecting sleeve is connected with the rubber bushing, the lower end of a short guide pin sequentially penetrates through the connecting sleeve and the rubber bushing and then stretches out, and a floating gap is reserved between the short guide pin and the rubber bushing as well as between the short guide pin and the connecting sleeve; the guide pin sealing cover is arranged between the short guide pin and the brake caliper body so as to seal the upper end of the floating gap; the cap is arranged at the lower end of the rubber bushing to seal the lower end of the floating gap. The rubber bushing and the connecting sleeve are arranged in the brake caliper body, can float axially and radially between the brake caliper body and the short guide pin, and can be matched with the short guide pin by virtue of the rubber piece, so that the abrasion can be reduced, and the noise can be reduced.
Description
Technical Field
The utility model relates to the technical field of brakes, in particular to a mute air pressure disc brake.
Background
With the popularization of new energy vehicles, noise generated by an engine disappears, and noise generated by other parts during running and braking of the vehicle becomes more sensitive, so that noise reduction and noise reduction of the disc brake are necessary.
In the field of disc brakes, a floating type brake caliper body structure is mostly adopted, namely, the brake caliper body floats on a brake bracket through a guide pin, and the brake shown in fig. 1 comprises a brake bracket 1, a brake caliper body 2, the guide pin, a metal bushing 9, a connecting screw 31, a backing ring and a guide pin sealing cover 6; the connecting screw passes the guide pin and is connected with the braking support to fix the guide pin on the braking support, the guide pin passes from the guiding hole of the braking caliper body, installs the metal bush in the guiding hole, and the guide pin forms sliding fit with the metal bush, and the guide pin sealed cowling cup joints in the guide pin outside, and its upper end butt braking support, its lower extreme butt braking caliper body for sealing the leakproofness between guide pin and braking support and the braking caliper body, at the guiding hole front end installation block of the braking caliper body, the block restriction external impurity gets into in the guiding hole. In the brake of fig. 1, since the metallic bush is used, the caliper body floating when the vehicle runs on a bumpy road surface is subjected to a large vibration acceleration, and metallic impact sound between the metallic bush and the guide pin mounted therein is very remarkable, which affects riding comfort; in order to reduce noise, there is also a method of reducing noise by reducing the gap between the bush and the guide pin, but the sliding performance of the caliper body is deteriorated with wear and deformation of the mechanical parts, thereby affecting the braking effect.
Secondly, in the disc brake, a guide system adopting an oil seal structure for the brake caliper body and the brake support can expose a guide pin outside and is easy to adhere with foreign matters, and the contact between the brake caliper body and the oil seal can damage the tightness of the oil seal when the brake caliper body slides, so that the tightness of the guide system is invalid, and the braking performance is influenced.
Disclosure of Invention
The utility model aims to solve the technical problems that: overcomes the defects of the prior art, provides a mute air pressure disc brake, and solves the problems of high noise and unsatisfactory performance reduction of the existing brake.
The technical scheme adopted for solving the technical problems is as follows: the mute air pressure disc brake comprises a brake bracket and a brake caliper body, wherein a long guide pin guide mechanism and a short guide pin guide mechanism are arranged between the brake caliper body and a brake; the short guide pin guide mechanism comprises a short guide pin which is fixedly arranged on the braking bracket; the brake caliper comprises a brake caliper body, a rubber bushing and a connecting sleeve, wherein the rubber bushing and the connecting sleeve are fixedly arranged in a mounting hole of the brake caliper body, the lower end of the connecting sleeve is connected with the rubber bushing, the lower end of a short guide pin sequentially penetrates through the connecting sleeve and the rubber bushing and then stretches out, and a floating gap is reserved between the short guide pin and the rubber bushing as well as between the short guide pin and the connecting sleeve; the guide pin sealing cover is arranged between the short guide pin and the brake caliper body so as to seal the upper end of the floating gap; the cap is arranged at the lower end of the rubber bushing to seal the lower end of the floating gap.
Further, the rubber bushing comprises a cylinder body and a rubber piece; the cylinder body is in interference fit in the mounting hole, the lower end of the cylinder body extends out of the brake caliper body, the outer surface of the lower end of the cylinder body is provided with a wavy rubber lip, and the cap is sleeved on the wavy rubber lip, so that the cap is in sealing connection with the cylinder body; the rubber piece is fixedly arranged in the cylinder body, a plurality of spiral oil storage grooves are formed in the rubber piece, the lower end of the short guide pin penetrates through the rubber piece, the upper end of the rubber piece extends out of the cylinder body, and a circle of clamping groove for being matched with the connecting sleeve is formed in the outer wall of the extending part.
Further, the connecting sleeve comprises a sleeve body, the sleeve body is in interference fit in the mounting hole, the short guide pin penetrates through the sleeve body, a connecting cavity for accommodating the extending part of the rubber piece is formed at the lower end of the sleeve body, and a clamping ring matched with the clamping groove is arranged in the connecting cavity.
Further, the guide pin sealing cover comprises an upper framework, colloid and a lower framework; the upper framework is in sealing fit with the outer wall of the short guide pin, and the lower framework is in sealing fit with the brake caliper body.
Further, a backing ring is arranged at the upper end of the short guide pin, and the backing ring wraps the upper framework.
Further, the short guide pin is fixed to the brake bracket via a connecting screw.
The beneficial effects of the utility model are as follows: according to the mute air pressure disc brake, through redesigning and optimizing the short guide pin guide mechanism, the rubber bushing and the connecting sleeve are arranged in the brake caliper body, and can float axially and radially between the rubber bushing and the short guide pin, and the rubber piece can be matched with the short guide pin, so that abrasion can be reduced, and noise is reduced.
The guide pin sealing cover at the upper end and the cover cap at the lower end are used for sealing the floating gap, so that the oil groove in the rubber part is prevented from being adhered with external foreign matters, and the lubricating performance between the rubber bushing and the short guide pin is ensured.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a guide mechanism between a brake spider and a caliper body in a conventional brake;
FIG. 2 is a schematic illustration of a silent pneumatic disc brake of the present utility model;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic view of a rubber bushing;
FIG. 5 is a schematic view of a guide pin boot seal;
FIG. 6 is a schematic view of a connection sleeve;
wherein, L1, long guide pin guiding mechanism, L2, short guide pin guiding mechanism; 1. a braking bracket 2, a braking clamp body 3, a short guide pin 31 and a connecting screw; 4. rubber bushing, 41, barrel, 411, raised grain rubber lip, 42, rubber piece, 421, clamping groove, 422, oil storage groove; 5. the connecting sleeve, 51 and the clamping ring; 6. a guide pin sealing cover 61, an upper framework 62, colloid 63 and a lower framework; 7. cap, 8, backing ring, 9, metal bushing, 10, long guide pin.
Description of the embodiments
The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.
As shown in fig. 2 to 6, a mute type air pressure disc brake includes a brake bracket 1 and a brake caliper body 2; a long guide pin guide mechanism L1 and a short guide pin guide mechanism L2 are arranged between the brake caliper body 2 and a brake.
The long guide pin guiding mechanism L1 in fig. 2 refers to the existing guide pin installation structure in fig. 1, and has the same principle structure, but the guide pin in the long guide pin guiding mechanism L1 adopts the long guide pin 10, and in this patent application, the structure improvement is made on the short guide pin guiding mechanism L2, specifically as follows: as shown in fig. 2 and 3, the short guide pin guiding mechanism L2 includes a short guide pin 3 fixedly disposed on the brake bracket 1; the rubber bushing 4 and the connecting sleeve 5 are fixedly arranged in the mounting hole of the brake caliper body 2, the lower end of the connecting sleeve 5 is connected with the rubber bushing 4, the lower end of the short guide pin 3 sequentially penetrates through the connecting sleeve 5 and the rubber bushing 4 and then extends out, and a floating gap is reserved between the short guide pin 3 and the rubber bushing 4 as well as between the short guide pin 3 and the connecting sleeve 5; a guide pin seal cover 6 provided between the short guide pin 3 and the caliper body 2 to seal an upper end of the floating gap; a cap 7 is provided at the lower end of the rubber bushing 4 to seal the lower end of the floating gap.
In this embodiment, the floating gap refers to radial floating and axial floating.
A guide cavity is formed among the short guide pin 3, the rubber bushing 4, the connecting sleeve 5, the guide pin sealing cover 6 and the cap 7, and the guide cavity forms a closed space by virtue of the guide pin sealing cover 6 and the cap 7 to prevent foreign matters from entering.
Specifically, as an alternative implementation of the present embodiment, as shown in fig. 2, the rubber bushing 4 includes a cylinder 41 and a rubber member 42; the cylinder 41 is in interference fit in the mounting hole, the lower end of the cylinder 41 extends out of the brake caliper body 2, the outer surface of the lower end is provided with a wavy rubber lip 411, and the cap 7 is sleeved on the wavy rubber lip 411, so that the cap 7 is in sealing connection with the cylinder 41; the tightness between the cap 7 and the cylinder 41 is improved by the undulating rubber lip 411.
The rubber member 42 is fixedly arranged in the cylinder 41, the lower end of the short guide pin 3 passes through the rubber member 42, the upper end of the rubber member 42 extends out of the cylinder 41, and a circle of clamping groove 421 for being matched with the connecting sleeve 5 is formed on the outer wall of the extending part.
In this embodiment, the spiral oil storage groove 422 is formed in the rubber member 42, and the lubricating oil is left in the oil storage groove 422, so that friction between the short guide pin 3 and the rubber member 42 can be reduced.
Specifically, as an alternative implementation manner in this embodiment, as shown in fig. 6, the connecting sleeve 5 includes a sleeve body, the sleeve body is in interference fit in the mounting hole, the short guide pin 3 passes through the sleeve body, a connection cavity for accommodating the protruding portion of the rubber member 42 is formed at the lower end of the sleeve body, and a snap ring 51 for matching with the clamping groove 421 is disposed in the connection cavity.
The rubber member 42 is connected by the snap ring 51 at the lower end of the connecting sleeve 5, so that the structure of the rubber bushing 4 in the mounting hole can be stabilized.
Specifically, as an alternative implementation manner in this embodiment, as shown in fig. 5, the guide pin seal cover 6 includes an upper skeleton 61, a colloid 62, and a lower skeleton 63; the upper framework 61 is in sealing fit with the outer wall of the short guide pin 3, and the lower framework 63 is in sealing fit with the brake caliper body 2.
Specifically, in order to fix the position of the upper skeleton 61 on the short guide pin 3, a backing ring 8 is disposed at the upper end of the short guide pin 3, and the backing ring 8 wraps the upper skeleton 61.
Specifically, the short guide pin 3 is fixed to the brake bracket 1 via a connecting screw 31.
In the mute air disc brake, the number of the guide pin guide mechanisms is two, one long guide pin guide mechanism L1 and one short guide pin guide mechanism L2, the long guide pin guide mechanism L1 also adopts a metal bushing 9, and the gap between the metal bushing 9 and the long guide pin is small, so that the mute air disc brake has a guide function; according to the utility model, the short guide pin guiding mechanism L2 is redesigned and optimized, the connecting sleeve 5 is arranged in the mounting hole of the braking clamp body 2, the rubber bushing 4 is matched with the short guide pin 3, the friction of the short guide pin 3 during floating can be reduced by the lubricating oil between the rubber piece 42 and the short guide pin 3, the friction is reduced, the silencing effect is achieved, and meanwhile, the floating gap is sealed by virtue of the guide pin sealing cover 6 at the upper end and the cap 7 at the lower end, so that water inflow in the gap is prevented.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. The mute air pressure disc brake is characterized by comprising a brake bracket (1) and a brake caliper body (2), wherein a long guide pin guide mechanism and a short guide pin guide mechanism are arranged between the brake caliper body (2) and a brake; the short guide pin guiding mechanism comprises a short guide pin (3) which is fixedly arranged on the braking bracket (1); the brake caliper comprises a rubber bushing (4) and a connecting sleeve (5), wherein the rubber bushing (4) and the connecting sleeve (5) are fixedly arranged in a mounting hole of a brake caliper body (2), the lower end of the connecting sleeve (5) is connected with the rubber bushing (4), the lower end of a short guide pin (3) sequentially penetrates through the connecting sleeve (5) and the rubber bushing (4) and then stretches out, and a floating gap is reserved between the short guide pin (3) and the rubber bushing (4) and between the short guide pin and the connecting sleeve (5); a guide pin seal cover (6) arranged between the short guide pin (3) and the brake caliper body (2) to seal the upper end of the floating gap; and the cap (7) is arranged at the lower end of the rubber bushing (4) so as to seal the lower end of the floating gap.
2. The silent-type pneumatic disc brake according to claim 1, characterized in that the rubber bushing (4) comprises a cylinder (41) and a rubber member (42); the cylinder body (41) is in interference fit in the mounting hole, the lower end of the cylinder body extends out of the brake caliper body (2), a wavy rubber lip (411) is arranged on the outer surface of the lower end of the cylinder body, and the cap (7) is sleeved on the wavy rubber lip (411), so that the cap (7) is in sealing connection with the cylinder body (41); the rubber piece (42) is fixedly arranged in the cylinder body (41), a plurality of spiral oil storage grooves (422) are formed in the rubber piece (42), the lower end of the short guide pin (3) penetrates through the rubber piece (42), the upper end of the rubber piece (42) extends out of the cylinder body (41), and a circle of clamping groove (421) used for being matched with the connecting sleeve (5) is formed in the outer wall of the extending part.
3. Mute air disc brake according to claim 2, characterized in that the connecting sleeve (5) comprises a sleeve body, which is interference fitted in a mounting hole, the short guide pin (3) passing through the sleeve body; the lower end of the sleeve body is provided with a connecting cavity for accommodating the extending part of the rubber piece (42), and a clamping ring (51) for being matched with the clamping groove (421) is arranged in the connecting cavity.
4. The silent pneumatic disc brake according to claim 1, characterized in that the guide pin boot seal (6) comprises an upper skeleton (61), a gel (62) and a lower skeleton (63); the upper framework (61) is in sealing fit with the outer wall of the short guide pin (3), and the lower framework (63) is in sealing fit with the brake caliper body (2).
5. The mute air disc brake as claimed in claim 4, wherein a grommet (8) is provided at the upper end of the short guide pin (3), the grommet (8) wrapping the upper frame (61).
6. Mute air disc brake according to claim 1, characterized in that the short guide pin (3) is fixed to the brake bracket (1) via a connecting screw (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322125957.6U CN220354341U (en) | 2023-08-09 | 2023-08-09 | Mute type air pressure disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322125957.6U CN220354341U (en) | 2023-08-09 | 2023-08-09 | Mute type air pressure disc brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220354341U true CN220354341U (en) | 2024-01-16 |
Family
ID=89503630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322125957.6U Active CN220354341U (en) | 2023-08-09 | 2023-08-09 | Mute type air pressure disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220354341U (en) |
-
2023
- 2023-08-09 CN CN202322125957.6U patent/CN220354341U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |