CN210318267U - Braking spring positioning structure of parking braking air chamber - Google Patents
Braking spring positioning structure of parking braking air chamber Download PDFInfo
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- CN210318267U CN210318267U CN201920718626.4U CN201920718626U CN210318267U CN 210318267 U CN210318267 U CN 210318267U CN 201920718626 U CN201920718626 U CN 201920718626U CN 210318267 U CN210318267 U CN 210318267U
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- 239000010985 leather Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002788 crimping Methods 0.000 abstract description 2
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- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a parking brake chamber's brake spring location structure, including well air chamber assembly, involucra, go up casing, spring holder, brake spring and position sleeve, the involucra crimping is at last casing and well air chamber assembly between and with well air chamber assembly formation parking chamber, its characterized in that, spring holder, brake spring and position sleeve assemble at the involucra with last casing formed in the cavity with one heart, the inside central authorities of going up the casing have inside sunken annular round platform, the cover body and the annular round platform phase-match of position sleeve, and have first location portion, second location portion and third location portion on the position sleeve and pass through the hole of port carries out location fit under first location portion, second location portion and the third location portion to brake spring, the base part of spring holder is discoid and with involucra looks butt, and has a plurality of evenly distributed's reducing structure on its main part and carries out location fit through the hole of reducing structure port on brake spring And (6) mixing.
Description
Technical Field
The utility model relates to a pneumatic brake system field of car, in particular to parking brake chamber's brake spring location structure.
Background
A series of special devices on a brake system automobile for applying a certain force from the outside (mainly a road surface) to certain parts (mainly wheels) of the automobile to perform a certain degree of forced braking thereon are collectively called a brake system. The commercial vehicle is mainly provided with a pneumatic brake system, a mechanical actuating mechanism is actuated by compressed air to provide braking force required by deceleration and parking for the vehicle, and a brake air chamber is a brake actuating element of the commercial vehicle. The spring brake chamber is a part of an automobile brake system, is generally installed on a drive axle of an automobile, and is widely applied to trucks, buses and the like in an air brake system.
It is known that the brake chambers are differentiated according to the structural form of the parking chamber, and are generally divided into a double-diaphragm type and a piston type.
The parking chamber of the brake chamber with the double-diaphragm structure is sealed by the diaphragm, the front cavity and the rear cavity of the cylinder body are respectively provided with the diaphragm, the spring seat transmits the mechanical braking force of the spring, and the spring of the parking chamber is inclined in the braking process due to poor positioning of the spring seat, so that the spring seat is forced to deflect and the diaphragms are stressed unevenly, and the diaphragms are worn, air leakage and failure are caused; meanwhile, the spring seat inclines in the using process, so that the abnormal deformation of the spring influences the service life of the device.
A sealing ring and a guide ring are arranged outside a piston of a parking cavity of a brake chamber of the piston type structure; the piston is provided with a sealing ring with a lip, and the sealing ring is matched with a cylinder body of the parking cavity to form a sealing effect, so that sand particles, dust and the like cannot be sucked into the parking braking cavity, otherwise, the inner cavity is easily scratched, the sealing lip is scratched, and air leakage is caused; if the brake pipeline has water vapor, the piston is possibly frozen due to the influence of low temperature in winter, so that the parking brake is acted, and the vehicle cannot run normally.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, overcome not enough among the prior art, the utility model provides a parking brake air chamber's brake spring location structure has solved spring holder and position sleeve and the not good problem of brake spring position location, parking chamber brake spring is linear motion all the time at braking in-process, can not take place slope and skew, the involucra atress is even, the gas leakage inefficacy of involucra because of wearing and tearing production has been avoided, and simultaneously, the spring holder can not take place the slope in the use, the spring does not have abnormal deformation, the life of device has been prolonged.
The utility model provides a technical scheme that above-mentioned problem adopted is: the brake spring positioning structure of the parking brake air chamber comprises a middle air chamber assembly, a leather membrane, an upper shell, a spring seat, a brake spring and a positioning sleeve, the leather membrane is pressed between the upper shell and the middle air chamber assembly in a pressing mode and forms a parking cavity together with the middle air chamber assembly, it is characterized in that the spring seat, the brake spring and the positioning sleeve are concentrically assembled in a cavity formed by the leather membrane and the upper shell, the center of the inner part of the upper shell is provided with an annular truncated cone which is sunken inwards, the sleeve body of the positioning sleeve is matched with the annular truncated cone, the positioning sleeve is provided with a first positioning part, a second positioning part and a third positioning part and is used for positioning and matching an inner hole of a lower port of the brake spring through the first positioning part, the second positioning part and the third positioning part, the base part of the spring seat is disc-shaped and is abutted with the membrane, and the main body part is provided with a plurality of diameter-changing structures which are uniformly distributed, and the inner holes of the upper ports of the brake springs are positioned and matched through the diameter-changing structures. The concentricity of the positioning sleeve, the spring seat, the brake spring and the upper shell in the utility model is high, the centering performance is good, the assembly is simpler and quicker, and the assembly precision and the assembly efficiency are improved; the sleeve body of the positioning sleeve is matched with the annular circular truncated cone of the upper shell, so that the deviation cannot be generated; through first location portion, the setting of second location portion and third location portion and reducing structure, the not good problem of spring holder and position sleeve and brake spring position location has been solved, parking chamber brake spring supports all the time and leans on to be linear motion on the spring holder at the braking in-process, brake spring evenly pressurized, slope and skew can not take place, the involucra atress is even, thereby the damage that the involucra caused because of brake spring lacks the location and produces the biasing has been avoided, the gas leakage inefficacy of involucra has been avoided, and simultaneously, the spring holder can not take place the slope in the use, the spring does not have abnormal deformation, the life of device has been prolonged.
As a further description of the above technical solution: when the brake spring is compressed to enable the upper end of the positioning sleeve to abut against the reducing structure of the spring seat, the distance between the circular outer edge of the bottom of the positioning sleeve and the base part of the spring seat is larger than the height of the support ring after the brake spring is compressed. Through the structural design of the reducing structures on the positioning sleeve and the spring seat, the brake spring can not be pressed to the height of the support ring of the brake spring all the time when being compressed, and the service life of the brake spring is ensured.
As a further description of the above technical solution: the sleeve body of the positioning sleeve is a conical sleeve, the outer edge is integrally formed at the edge of the opening at the large end of the sleeve body, the edge of the opening at the small end of the sleeve body is provided with a bending part extending inwards, the sleeve body is integrally formed with a first positioning part and a second positioning part, the axis of the first positioning part and the axis of the second positioning part are respectively vertical to the plane formed by the axis of the sleeve body, the first positioning part and the second positioning part are both arc-shaped bulges, and the radial outer edge lines of the first positioning part and the second positioning part are both parallel to the axis of the sleeve body; the outer edge is provided with a third positioning part formed at the position far away from the first positioning part and the second positioning part, the third positioning part is a rectangular lug, and one side of the third positioning part is provided with a fan-shaped notch.
As a further description of the above technical solution: the main part of spring holder is coniform, and its integrated into one piece has six evenly distributed's reducing structure, reducing structure be with base part looks vertically rectangle boss, and the length of reducing structure grow gradually in the anticlockwise of spring holder.
As a further description of the above technical solution: the distance between the outer edge of the bottom of the positioning sleeve and the base of the spring seat is 41 mm.
As a further description of the above technical solution: the distance between the outer edge line of the farthest end of the first positioning part in the radial direction and the axis of the sleeve body is 39 mm; the distance between the outer edge line of the farthest end of the second positioning part in the radial direction and the axis of the sleeve body is 35.5 mm; the central angle of the fan-shaped notch is 38 degrees.
As a further description of the above technical solution: the width of the reducing structure is 5mm, and the length range of the reducing structure is 34 mm-42 mm.
As a further description of the above technical solution: the braking spring positioning structure of the parking braking air chamber can be used for a double-diaphragm type braking air chamber and can also be used for a piston type braking air chamber.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the concentricity of the positioning sleeve, the spring seat, the brake spring and the upper shell is high, the centering performance is good, the assembly is simpler and quicker, and the assembly precision and the assembly efficiency are improved;
2. the sleeve body of the positioning sleeve is matched with the annular circular truncated cone of the upper shell, so that the deviation cannot be generated;
3. through the structural design of the positioning sleeve and the reducing structure on the spring seat, the brake spring is always prevented from being pressed to the height of the support ring when being compressed, and the service life of the spring is ensured;
4. through first location portion, the setting of second location portion and third location portion and reducing structure, the not good problem of spring holder and position sleeve and brake spring position location has been solved, parking chamber brake spring supports all the time and leans on to be linear motion on the spring holder at the braking in-process, brake spring evenly pressurized, slope and skew can not take place, the involucra atress is even, thereby the damage that the involucra caused because of brake spring lacks the location and produces the biasing has been avoided, the gas leakage inefficacy of involucra has been avoided, and simultaneously, the spring holder can not take place the slope in the use, the spring does not have abnormal deformation, the life of device has been prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an assembly view of the brake spring positioning structure of the parking brake chamber of the present invention.
Fig. 2 is a schematic view of a partial part structure of a brake spring positioning structure of a middle parking brake chamber of the present invention.
Fig. 3 is an assembly view of the brake spring positioning structure of the middle parking brake chamber of the present invention for the double-diaphragm brake chamber.
Fig. 4 is a schematic structural diagram of the positioning sleeve of the braking spring positioning structure of the middle parking braking air chamber of the present invention.
Fig. 5 is a sectional view taken along line a-a in fig. 4.
Fig. 6 is a sectional view taken along line B-B in fig. 4.
Fig. 7 is a schematic structural diagram of a spring seat of the brake spring positioning structure of the middle parking brake chamber of the present invention.
Fig. 8 is a sectional view taken along line a-a in fig. 7.
Fig. 9 is a sectional view taken along line B-B in fig. 7.
Fig. 10 is a cross-sectional view taken along line C-C of fig. 7.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The utility model provides a brake spring 5 location structure of parking brake chamber in embodiment, including well air chamber assembly 1, involucra 2, upper housing 3, spring holder 4, brake spring 5 and position sleeve 6, involucra 2 crimping is between upper housing 3 and well air chamber assembly 1 and forms the parking chamber with well air chamber assembly 1, and spring holder 4, brake spring 5 and position sleeve 6 assemble at the same heart in the chamber that involucra 2 and upper housing 3 formed, the inside center of upper housing 3 has inside sunken annular round platform, the cover body 64 and the annular round platform phase-match of position sleeve 6, and have first location portion 61, second location portion 62 and third location portion 63 on the position sleeve 6 and carry out the location cooperation to the hole of brake spring 5 lower port through first location portion 61, second location portion 62 and third location portion 63, the base part 41 of spring holder 4 is discoid and butts with involucra 2, and the main body part 42 is provided with a plurality of diameter-changing structures 43 which are uniformly distributed, and the inner holes of the upper ports of the brake springs 5 are positioned and matched through the diameter-changing structures 43. The sleeve body 64 of the positioning sleeve 6 is matched with the annular truncated cone of the upper shell 3, so that the deviation cannot be generated; through first location portion 61, the setting of second location portion 62 and third location portion 63 and reducing structure 43, the not good problem of spring holder 4 and position sleeve 6 and brake spring 5 position location has been solved, parking chamber brake spring 5 supports all the time and leans on to be linear motion on spring holder 4 in braking process, brake spring 5 evenly receives pressure, can not take place slope and skew, involucra 2 atress is even, thereby avoided producing the damage that the biasing led to the fact involucra 2 because of brake spring 5 lacks the location, the gas leakage inefficacy of involucra 2 has been avoided, and simultaneously, spring holder 4 can not take place the slope in the use, the spring does not have abnormal deformation, the life of device has been prolonged.
When the braking spring 5 is compressed to make the upper end of the positioning sleeve 6 abut against the reducing structure 43 of the spring seat 4, the distance between the circular outer edge 65 at the bottom of the positioning sleeve 6 and the base part 41 of the spring seat 4 is greater than the height of the support ring after the braking spring 5 is compressed. Through the structural design of the reducing structures 43 on the positioning sleeve 6 and the spring seat 4, the brake spring 5 can not be pressed to the height of the support ring of the brake spring all the time when being compressed, and the service life of the brake spring is ensured.
The sleeve body 64 of the positioning sleeve 6 is a conical sleeve, the outer edge 65 is integrally formed on the edge of the large end opening of the sleeve body 64, the edge of the small end opening of the sleeve body 64 is provided with a bending part extending inwards, the sleeve body 64 is integrally formed with a first positioning part 61 and a second positioning part 62, the axis of the first positioning part 61 and the axis of the second positioning part 62 are respectively perpendicular to the plane formed by the axis of the sleeve body 64, the first positioning part 61 and the second positioning part 62 are both arc-shaped protrusions, and the radial outer edge lines of the first positioning part 61 and the second positioning part 62 are both parallel to the axis of the sleeve body 64; the outer edge 65 is formed with the third positioning portion 63 at a position away from the first positioning portion 61 and the second positioning portion 62, the third positioning portion 63 is a rectangular bump, and one side of the third positioning portion 63 is provided with a fan-shaped notch.
The main body part 42 of the spring seat 4 is conical, six reducing structures 43 which are uniformly distributed are integrally formed, the reducing structures 43 are rectangular bosses which are perpendicular to the base part 41, and the length of each reducing structure 43 is gradually increased in the counterclockwise direction of the spring seat 4.
The distance between the outer edge 65 of the bottom of the positioning sleeve 6 and the base of the spring seat 4 is 41 mm.
The distance between the outer edge line of the radially outermost end of the first positioning part 61 and the axis of the sleeve body 64 is 39 mm; the distance between the outer edge line of the radially outermost end of the second positioning part 62 and the axis of the sleeve body 64 is 35.5 mm; the central angle of the fan-shaped notch is 38 degrees.
The width of the reducing structure 43 is 5mm, and the length range is 34 mm-42 mm.
The embodiment of the utility model provides an in position sleeve 6, spring holder 4, brake spring 5 and go up casing 3's concentricity height, it is good to neutrality, the assembly is simpler, swift, assembly precision and assembly efficiency all obtain improving.
The parking brake air chamber brake spring positioning structure can be used for a double-diaphragm brake air chamber and a piston brake air chamber, when the parking brake air chamber brake spring positioning structure is used for the double-diaphragm brake air chamber, the embodiment of the utility model also comprises a lower shell 9, a push rod 10, a first return spring, a push rod spring seat and another film 8 which is pressed between the middle air chamber assembly 1 and the lower shell 9, the middle air chamber assembly comprises a brake mandrel 7, a mandrel spring seat and a second return spring, the brake mandrel 7 is arranged in the middle of the middle air chamber assembly 1 in a penetrating way and is abutted against the film 2 through the second return spring arranged on the middle air chamber assembly and the mandrel spring seat arranged at the end part of the brake mandrel 7, and is abutted against the another film 8 through the mandrel spring seat arranged at the other end part of the brake mandrel assembly, the push rod 10 is abutted against the another film 8 through the first return spring arranged at the end part, the other membrane 8 and the middle air chamber form a driving cavity. The working principle is as follows: during service braking, compressed air enters the service cavity, acts on the other membrane 8, compresses the first return spring to push out the push rod 10, and pressure acting on the other membrane 8 acts on the adjusting arm through the connecting rod to generate braking torque on the wheel; during parking and emergency braking, the compressed air in the parking chamber is completely or partially released, and the brake spring 5 is also completely or partially released and acts on the wheel brake through the membrane 2, the push rod 10 and the brake adjusting arm.
It should be noted that the above detailed description of the embodiments of the present invention with reference to the preferred embodiments is intended to be illustrative and not restrictive. On reading the description of the present invention, those skilled in the art may modify the technical solutions described in the embodiments or may substitute part of the technical features of the embodiments, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A brake spring positioning structure of a parking brake air chamber comprises a middle air chamber assembly, a leather membrane, an upper shell, a spring seat, a brake spring and a positioning sleeve, the leather membrane is pressed between the upper shell and the middle air chamber assembly in a pressing mode and forms a parking cavity together with the middle air chamber assembly, it is characterized in that the spring seat, the brake spring and the positioning sleeve are concentrically assembled in a cavity formed by the leather membrane and the upper shell, the center of the inner part of the upper shell is provided with an annular truncated cone which is sunken inwards, the sleeve body of the positioning sleeve is matched with the annular truncated cone, the positioning sleeve is provided with a first positioning part, a second positioning part and a third positioning part and is used for positioning and matching an inner hole of a lower port of the brake spring through the first positioning part, the second positioning part and the third positioning part, the base part of the spring seat is disc-shaped and is abutted with the membrane, and the main body part is provided with a plurality of diameter-changing structures which are uniformly distributed, and the inner holes of the upper ports of the brake springs are positioned and matched through the diameter-changing structures.
2. The brake spring positioning structure of the parking brake chamber according to claim 1, wherein when the brake spring is compressed to make the upper end of the positioning sleeve abut against the diameter-variable structure of the spring seat, a distance between the circular outer edge of the bottom of the positioning sleeve and the base portion of the spring seat is greater than a height of the support ring after the brake spring is compressed.
3. The positioning structure of the brake spring of the parking brake chamber according to claim 1 or 2, wherein the cover body of the positioning cover is a conical cover, the edge of the large end opening of the cover body is integrally formed with an outer edge, the edge of the small end opening of the cover body is provided with a bent portion extending inwards, the cover body is integrally formed with a first positioning portion and a second positioning portion, the axis of the first positioning portion and the axis of the second positioning portion are perpendicular to the plane formed by the axis of the cover body, the first positioning portion and the second positioning portion are both arc-shaped protrusions, and the radial outer edge lines of the first positioning portion and the second positioning portion are parallel to the axis of the cover body; the outer edge is provided with a third positioning part formed at the position far away from the first positioning part and the second positioning part, the third positioning part is a rectangular lug, and one side of the third positioning part is provided with a fan-shaped notch.
4. The brake spring positioning structure of the parking brake air chamber as claimed in claim 1 or 2, wherein the main body part of the spring seat is conical, six uniformly distributed reducing structures are integrally formed on the spring seat, the reducing structures are rectangular bosses perpendicular to the base part, and the length of the reducing structures is gradually increased in the counterclockwise direction of the spring seat.
5. The brake spring positioning structure of a parking brake chamber as defined in claim 2, wherein a distance between an outer edge of a bottom of the positioning sleeve and a base of the spring seat is 41 mm.
6. The brake spring positioning structure of a parking brake chamber as recited in claim 3, wherein a distance between an outer edge line of a radially outermost end of the first positioning portion and an axis of the housing body is 39 mm; the distance between the outer edge line of the farthest end of the second positioning part in the radial direction and the axis of the sleeve body is 35.5 mm; the central angle of the fan-shaped notch is 38 degrees.
7. The positioning structure of the brake spring of the parking brake air chamber as claimed in claim 4, wherein the diameter-variable structure has a width of 5mm and a length ranging from 34mm to 42 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718626.4U CN210318267U (en) | 2019-05-20 | 2019-05-20 | Braking spring positioning structure of parking braking air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718626.4U CN210318267U (en) | 2019-05-20 | 2019-05-20 | Braking spring positioning structure of parking braking air chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318267U true CN210318267U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920718626.4U Expired - Fee Related CN210318267U (en) | 2019-05-20 | 2019-05-20 | Braking spring positioning structure of parking braking air chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318267U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219912A (en) * | 2019-05-20 | 2019-09-10 | 嘉兴润通汽车配件有限公司 | A kind of tripping spring location structure of parking braking gas chamber |
| CN111779778A (en) * | 2020-06-05 | 2020-10-16 | 陈玉平 | Spring brake chamber for heavy truck |
-
2019
- 2019-05-20 CN CN201920718626.4U patent/CN210318267U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219912A (en) * | 2019-05-20 | 2019-09-10 | 嘉兴润通汽车配件有限公司 | A kind of tripping spring location structure of parking braking gas chamber |
| CN110219912B (en) * | 2019-05-20 | 2025-01-07 | 嘉兴润通汽车配件有限公司 | A brake spring positioning structure for a parking brake air chamber |
| CN111779778A (en) * | 2020-06-05 | 2020-10-16 | 陈玉平 | Spring brake chamber for heavy truck |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210520 |
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| CF01 | Termination of patent right due to non-payment of annual fee |