CN202418349U - Short draw bar device of brake chamber of automobile - Google Patents
Short draw bar device of brake chamber of automobile Download PDFInfo
- Publication number
- CN202418349U CN202418349U CN 201220010292 CN201220010292U CN202418349U CN 202418349 U CN202418349 U CN 202418349U CN 201220010292 CN201220010292 CN 201220010292 CN 201220010292 U CN201220010292 U CN 201220010292U CN 202418349 U CN202418349 U CN 202418349U
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- CN
- China
- Prior art keywords
- bolt
- energy storage
- draw bar
- stay
- screw
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a short draw bar device of a brake chamber of an automobile. The chamber comprises an energy storage cylinder (1) and a draw bar bolt (6), a screw hole is arranged on the energy storage cylinder (1), an energy storage piston (3) and a piston shaft sleeve (2) are disposed in the energy storage cylinder (1), and the draw bar bolt (6) extends into the piston shaft sleeve (2) from the screw hole. The short draw bar device is characterized in that a movable limiting nut (5) is arranged in the piston shaft sleeve (2), threads of the draw bar bolt (6) are divided into two sections on a body, the grain directions of the two sections of the threads are opposite, one section of the threads matches with the limiting nut (5), the other section of the threads matches with the screw hole, an inner screw hole of the piston shaft sleeve (2) is in a geometric shape, the geometric shape of the inner screw hole of the piston shaft sleeve (2) matches with a geometric shape of the appearance of the limiting nut (5). Compared with the prior art, the short draw bar device has the advantages that the structure of a product is simplified, manufacturing cost is reduced, the length of the draw bar bolt is reduced, the overall dimensions of the brake chamber are reduced, a truck loading space is saved, an assembling process is simple, production efficiency is enhanced, and reliability of parts of a mechanical dismantling portion is improved.
Description
Technical field
What the utility model was related is a kind of improvement invention of automobile brake chamber, and what be specifically related to is a kind of improvement invention of brake chamber draw-in bar bolt.
Background technique
In the existing technology; Parking braking chamber machinery is removed partly and is made up of parts such as stay-bolt, seal ring, packing ring, straight pin and nuts on the automobile, and part is more, must be through screwing in stay-bolt by the direction of arrow in the piston shaft during assembling; Be inserted in seal ring, packing ring again; Screw in nut then, on nut and pull bar, be reserved with the screw pin, at last straight pin is pressed into.When discharging braking, swivel nut is screwed into the energy storage cylinder base left with stay-bolt, realizes the release of parking braking; During brake off, swivel nut is back-outed stay-bolt to the right, realizes the parking braking releasing.Stay-bolt is when the brake off state in the existing technology, and being exposed at the external length of loaded cylinder outward is the stroke greater than the parking braking chamber, needs to reserve bigger space after causing brake chamber to install and be convenient to carry out manual brake off operation; During the part assembling, need to adopt special tool that stay-bolt is screwed in, and be pressed into straight pin, increased assembling difficulty and manufacture cost with special device; That reserves on the stay-bolt runs through the pin screw; Increased the manufacturing process difficulty of stay-bolt, existed, adopted the structure of straight pin set screw nut from the risk of pin screw fracture; The potential failure mode that exists straight pin to come off, and the risk of straight pin fracture can appear in manual releasing.
Summary of the invention
Given this, the technical problem that the utility model solved is in order to provide a kind of reasonable in design, compact structure, and assembling is simple, and improves the short rod device of a kind of automobile brake chamber of integrity.To achieve these goals, the utility model adopts following technological scheme to accomplish:
ShouldPlant the short rod device of automobile brake chamber, whole air chamber includes energy storage cylinder body and stay-bolt, and said energy storage cylinder body is provided with screw; Be provided with energy storage piston and piston sleeve in the said energy storage cylinder body, stay-bolt extend into from screw in the piston sleeve, it is characterized in that being provided with stop nut in the said piston sleeve; The screw thread of said bolt is divided into two sections on body; And ridge orientation is opposite, and wherein one section screw thread and stop nut are complementary, and another section screw thread and screw are complementary; Said piston sleeve inner bolt hole is a geometrical shape, and the inner bolt hole geometrical shape of said piston sleeve and the profile geometrical shape of stop nut are complementary.
The pitch of two sections screw threads is different on the said bolt body, said and nut be complementary screw thread pitch greater than with the be complementary pitch of screw thread of screw.
Be provided with the nut preloading spring in the said piston sleeve.
The head shaft shoulder place of said stay-bolt is provided with a groove, is provided with seal ring in said this groove.
The utility model is compared with prior art: simplified product structure, reduced manufacture cost; Shorten the length of stay-bolt, therefore reduced boundary dimension, the saving entrucking space of brake chamber; Assembly technology is simpler, promotes manufacturing efficiency; Elevating mechanism is removed the reliability of part.
Description of drawings
Fig. 1 is the existing technology structural representation;
Fig. 2 removes parking braking status architecture schematic representation for the utility model;
Fig. 3 is the utility model parking braking status architecture schematic representation.
Embodiment
Represented the structure and the embodiment of the utility model to combine accompanying drawing further to describe the relevant details and the working principle of embodiment below again at accompanying drawing.The short rod device of this kind automobile brake chamber; Whole air chamber includes energy storage cylinder body 1; Said energy storage cylinder body 1 is provided with a threaded screw, is provided with energy storage piston 3, energy storage spring 4 and piston sleeve 2 in the said energy storage cylinder body 1, and stay-bolt 6 extend into from screw in the piston sleeve 2; Therefore can stay-bolt 6 be screwed into from screw according to the direction of arrow from the loaded cylinder external; The head shaft shoulder place of said stay-bolt body is provided with a groove, is provided with seal ring 7 in said this groove, and compared with prior art structure is more simple.Be provided with stop nut 5 in the said piston sleeve, this stop nut can be in the pull bar upper edge lines of screw thread move, said stay-bolt 6 is divided into two sections screw threads on body; The centre separates through an isolation zone, and wherein the ridge orientation of the ridge orientation of one section screw thread and another section screw thread is opposite, therefore; Wherein one section screw thread and stop nut are complementary, another section screw thread with then be complementary with screw, like this; Stop nut 5 can form conformity with the direction that stay-bolt moves, and the inner bolt hole geometrical shape of said piston sleeve and the profile geometrical shape of stop nut are complementary, and that is to say; This stop nut is a hexagon nut, and then inner bolt hole is shaped as the hexagonal screw, and stop nut is quincunx nut; Then inner bolt hole be shaped as quincunxly, the nut skidding can not take place so
Said stay-bolt 6 bodies are divided into two sections, and the pitch of two sections screw threads is different, with nut be complementary screw thread pitch greater than with the be complementary pitch of screw thread of screw; This can proportionally be provided with, and that is to say, the former is thick spiral shell; The pitch of supposing thick spiral shell is two millimeters, and the latter is that thin spiral shell then is 1 millimeter, is exactly 2:1 so; When the thin spiral shell of bolt moves two millimeters in screw, the stop nut on thick spiral shell just moves four millimeters because pitch is big in the same way on the thick spiral shell position of bolt so; Therefore stay-bolt only need expose the working stroke that rated travel 1/3rd can be realized existing technology, thereby has shortened the boundary dimension of brake chamber.
Be provided with nut preloading spring 9 in the said piston sleeve, the effect of this spring is in turn stay-bolt process, gives the pretension of stop nut in the piston sleeve, and stay-bolt is screwed in the stop nut more smoothly.
When discharging braking, sees the utility model Fig. 2; The hexagon-head of rotating rod bolt; Stay-bolt screws in left, closes until showing consideration for this head and loaded cylinder, in the process of turn stay-bolt; Because revolving stroke when dead, the difference of pitch ratio, stay-bolt hexagon-head and cylinder base is merely 1/3rd of bolt protruded length in the existing technology; See Fig. 3 when carrying out brake off, the hexagon-head of rotating rod bolt, stay-bolt screws out to the right, and until being compressed fully with energy storage spring, at this moment, stay-bolt exposes and is about 1/3rd of brake chamber stroke, and at this moment, parking braking is removed fully.The utility model is compared with prior art: owing to cancelled pad 10 and the straight pin 8 among existing technology such as Fig. 1, therefore simplified product structure, reduced manufacture cost; Reduce boundary dimension, the saving entrucking space of brake chamber; Assembly technology is simpler, promotes manufacturing efficiency; Elevating mechanism is removed the reliability of part.
Claims (4)
1. the short rod device of an automobile brake chamber; This air chamber includes energy storage cylinder body (1) and stay-bolt (6), and said energy storage cylinder body (1) is provided with screw, is provided with energy storage piston (3) and piston sleeve (2) in the said energy storage cylinder body (1); Stay-bolt (6) extend into from screw in the piston sleeve (2); It is characterized in that being provided with movably stop nut (5) in the said piston sleeve (2), the screw thread of said stay-bolt (6) is divided into two sections on body, and ridge orientation is opposite; Wherein one section screw thread and stop nut (5) are complementary; Another section screw thread and screw are complementary, and said piston sleeve (2) inner bolt hole is a geometrical shape, and the profile geometrical shape of the inner bolt hole geometrical shape of said piston sleeve (2) and stop nut (5) is complementary.
2. the short rod device of a kind of automobile brake chamber as claimed in claim 1 is characterized in that the pitch of two sections screw threads on the bolt body is different, with nut be complementary screw thread pitch greater than with the be complementary pitch of screw thread of screw.
3. according to claim 1 or claim 2 a kind of short rod device of automobile brake chamber is characterized in that being provided with in the said piston sleeve nut preloading spring (9).
4. according to claim 1 or claim 2 a kind of short rod device of automobile brake chamber is characterized in that the head shaft shoulder place of said stay-bolt (6) is provided with a groove, is provided with seal ring (7) in said this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220010292 CN202418349U (en) | 2012-01-11 | 2012-01-11 | Short draw bar device of brake chamber of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220010292 CN202418349U (en) | 2012-01-11 | 2012-01-11 | Short draw bar device of brake chamber of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418349U true CN202418349U (en) | 2012-09-05 |
Family
ID=46743119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220010292 Expired - Fee Related CN202418349U (en) | 2012-01-11 | 2012-01-11 | Short draw bar device of brake chamber of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562883A (en) * | 2012-01-11 | 2012-07-11 | 瑞立集团瑞安汽车零部件有限公司 | Short pull rod device for automobile brake chamber |
-
2012
- 2012-01-11 CN CN 201220010292 patent/CN202418349U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562883A (en) * | 2012-01-11 | 2012-07-11 | 瑞立集团瑞安汽车零部件有限公司 | Short pull rod device for automobile brake chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20200111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |