CN207777483U - A kind of self-adjusting mechanism assembly - Google Patents
A kind of self-adjusting mechanism assembly Download PDFInfo
- Publication number
- CN207777483U CN207777483U CN201820082422.1U CN201820082422U CN207777483U CN 207777483 U CN207777483 U CN 207777483U CN 201820082422 U CN201820082422 U CN 201820082422U CN 207777483 U CN207777483 U CN 207777483U
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- CN
- China
- Prior art keywords
- self
- connecting portion
- ratchet
- sleeve
- adjusting mechanism
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- Expired - Fee Related
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Abstract
The utility model is related to automobile brake technical fields, in particular to a kind of self-adjusting mechanism assembly.A kind of self-adjusting mechanism assembly comprising：Self-regulated swivel nut, self-regulated supporting rod and ratchet screw rod.Self-regulated swivel nut includes the first sleeve part and the first support portion being oppositely arranged, and internal thread is provided in the first sleeve part.Self-regulated supporting rod includes the second sleeve portion being oppositely arranged and the second support portion.Ratchet screw rod includes first connecting portion, second connecting portion and the ratchet being arranged between first connecting portion and second connecting portion, and the peripheral surface of first connecting portion is equipped with external screw thread；Butting section is additionally provided between second connecting portion and ratchet.Butting section be used for after second connecting portion stretches into second sleeve portion with the end in second sleeve portion against.The apparatus structure is simple, easy to use, can effectively reduce the abrasion during use, improves service life.
Description
Technical field
The utility model is related to automobile brake technical fields, in particular to a kind of self-adjusting mechanism assembly.
Background technology
Braking system is to be related to the critical component of safety of person vehicle, and brake belongs to most important in all driving vehicles
Safety, critical component, there are many structure type, draw-arm brakes according to the requirement such as reliable, laborsaving for the braking system of automobile
It is common a kind of structure in mechanical brake brake.Drum brake is that the braking in light, car, microcar braking system executes dress
It sets, is the critical component in brake system of car.Its operation principle is the hydraulic pressure generated using brake master cylinder assy, passes through braking
Pipeline, which is sent to drum brake, to be made shoe brake be in contact with Back-braking drum and then generates frictional resistance to prevent turning for wheel
Dynamic or rotation trend.The element of drum brake is more than disk brake, and maintenance difficulty bigger, but drum brake
The manufacturing cost of device is low, and is easy to be combined with emergency braking system and parking braking system.So being widely used in vapour
Vehicle field.
For vehicle in normally travel, shoe brake is in idle initial position, is answered between shoe brake and brake drum
Keep suitable gap.But since shoe brake and brake drum can be gradually worn out in service braking operation, so as to cause system
Dynamic gap between shoe plate and brake drum can gradually increase, and will finally extend braking time, increase braking distance, this is for safety
Driving is very unfavorable.In order to keep good braking efficiency, to have between the friction plate and brake drum in brake shoe assembly
One best clearance value.With friction disc wear, gap between brake shoe assembly and brake drum increases, and needs that there are one adjustment
The mechanism in gap.
And the mechanism in existing adjustment gap is during use, abrasion is larger, leads to the mechanism longevity for adjusting gap
Life is shorter.
Utility model content
The purpose of this utility model is to provide a kind of self-adjusting mechanism assemblies, and the self-adjusting mechanism assembly structure is simple, use
It is convenient, the abrasion during use can be effectively reduced, service life is improved.
What the embodiments of the present invention were realized in：
A kind of self-adjusting mechanism assembly comprising：Self-regulated swivel nut, self-regulated supporting rod and ratchet screw rod；
Self-regulated swivel nut includes the first sleeve part and the first support portion being oppositely arranged, and interior spiral shell is provided in the first sleeve part
Line；
Self-regulated supporting rod includes the second sleeve portion being oppositely arranged and the second support portion；
Ratchet screw rod includes first connecting portion, second connecting portion and is arranged between first connecting portion and second connecting portion
Ratchet, the peripheral surface of first connecting portion is equipped with external screw thread；Butting section is additionally provided between second connecting portion and ratchet；
First support portion is connect with two brake-shoes respectively with the second support portion；First connecting portion is for stretching into the first sleeve
Portion, and make external screw thread and internal thread screw-thread fit；Second connecting portion for stretching into second sleeve portion, and with second sleeve portion
Inner wall is slidably matched；Butting section be used for after second connecting portion stretches into second sleeve portion with the end in second sleeve portion against.
The first connecting portion and second connecting portion of the ratchet screw rod of the self-adjusting mechanism assembly be respectively protruding into the first sleeve part and
Second sleeve portion, and first connecting portion is after stretching into the first sleeve part, the external screw thread of first connecting portion and the first sleeve part
Internal thread cooperates.Inner wall of the second connecting portion with second sleeve portion after stretching into second sleeve portion is slidably matched, and exists as a result,
During use, the rotation of the ratchet on drive ratchet screw rod can be passed through so that the ratchet screw rod is supported relative to self-regulated
Bar and the rotation of self-regulated swivel nut, and during ratchet screw rod rotates, since itself and self-regulated swivel nut are screw-thread fit, and self-regulated
Swivel nut is relatively fixed, therefore during ratchet screw rod rotates, ratchet screw rod can move linearly relative to self-regulated swivel nut, to push away
The shoe brake of dynamic both sides compensates the gap generated due to abrasion between shoe brake and brake drum close to brake drum.And by
During ratchet screw rod rotates, since the butting section of ratchet screw rod and the end in second sleeve portion are against in ratchet screw rod
It when being rotated relative to self-regulated supporting rod, is contacted with the end in second sleeve portion by butting section, can avoid turning in ratchet screw rod
When dynamic, the loss to the root of ratchet.
In a kind of embodiment of the utility model：
Butting section includes the annular projection being arranged between second connecting portion and ratchet.
In a kind of embodiment of the utility model：
Annular projection close to second sleeve portion side be equipped with for the end with second sleeve portion against arcwall face.
In a kind of embodiment of the utility model：
First connecting portion, second connecting portion and ratchet integral type are made.
In a kind of embodiment of the utility model：
Lubricant layer is equipped between external screw thread and internal thread.
In a kind of embodiment of the utility model：
Lubricant layer includes the lithium base grease layer being attached between external screw thread and the mating surface of internal thread.
In a kind of embodiment of the utility model：
The length of first connecting portion is more than the length of second connecting portion.
The technical solution of the utility model at least has the advantages that：
Self-adjusting mechanism assembly structure provided by the utility model is simple, easy to use, during capable of effectively reducing use
Abrasion, improve service life.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of self-adjusting mechanism assembly in the utility model embodiment；
Fig. 2 is the structural schematic diagram of self-regulated swivel nut and self-regulated supporting rod in the utility model embodiment；
Fig. 3 is the structural schematic diagram of ratchet screw rod in the utility model embodiment.
Icon：200- self-adjusting mechanism assemblies；210- self-regulated swivel nuts；The first sleeve parts of 211-；The first support portions of 212-；220-
Self-regulated supporting rod；221- second sleeves portion；The second support portions of 222-；230- ratchet screw rods；231- first connecting portions；232- second
Interconnecting piece；233- ratchets；The butting sections 234-.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the utility model embodiment, it should be noted that the orientation of the instructions such as term "inner", "lower" or
Position relationship be based on the orientation or positional relationship shown in the drawings or the utility model product using when the side usually put
Position or position relationship, are merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device
Or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to the utility model
Limitation.In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relative importance.
In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise,
Term " setting ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can be directly connected, can also can be indirectly connected through an intermediary two elements
Internal connection.For the ordinary skill in the art, above-mentioned term can be understood in the utility model with concrete condition
In concrete meaning.
Embodiment
Clearance self-regulating mechanism is one of parts very crucial in drum brake.When shoe brake and brake drum work
When surface abrasion, the gap of bigger will be generated between shoe brake and brake drum.When automobile is braked in the process of moving, in pipeline
Shoe brake can be close to brake drum under the action of hydraulic pressure.Due to the increase in gap, the displacement of shoe brake increases, and drives and adjusts
The moving tooth partial dislocation of shift plate increases, and the gear of clearance self-regulating mechanism is made to rotate a tooth forward.It is threaded on gear, therefore
It generates displacement in the axial direction in rotation, to make self-adjusting mechanism entire length increase, and pushes the system for being supported on both ends
Dynamic shoe plate is moved to both sides, has been filled up since gap caused by abrasion increases.Therefore it always make shoe brake and brake drum it
Between keep gap appropriate, ensure that braking reliability.
Referring to FIG. 1, Fig. 1 shows the concrete structure of the self-adjusting mechanism assembly 200 provided in embodiment.
From figure 1 it appears that the self-adjusting mechanism assembly 200 includes：Self-regulated swivel nut 210, self-regulated supporting rod 220 and ratchet
Screw rod 230；
Fig. 2 is please referred to, self-regulated swivel nut 210 includes the first sleeve part 211 and the first support portion 212 being oppositely arranged, the
It is provided with internal thread in one sleeve part 211.
Fig. 2 is please referred to, self-regulated supporting rod 220 includes the second sleeve portion 221 being oppositely arranged and the second support portion 222.
Fig. 3 is please referred to, ratchet screw rod 230 includes that first connecting portion 231, second connecting portion 232 and setting connect first
The peripheral surface of ratchet 233 between socket part 231 and second connecting portion 232, first connecting portion 231 is equipped with external screw thread；Second
Butting section 234 is additionally provided between interconnecting piece 232 and ratchet 233.
First support portion 212 is connect with two brake-shoes respectively with the second support portion 222；First connecting portion 231 is for stretching
Enter the first sleeve part 211, and makes external screw thread and internal thread screw-thread fit；Second connecting portion 232 is for stretching into second sleeve portion
221, and be slidably matched with the inner wall in second sleeve portion 221；Butting section 234 is used to stretch into second sleeve in second connecting portion 232
Behind portion 221 with the end in second sleeve portion 221 against.
The first connecting portion 231 and second connecting portion 232 of the ratchet screw rod 230 of the self-adjusting mechanism assembly 200 are respectively protruding into
First sleeve part 211 and second sleeve portion 221, and first connecting portion 231, after stretching into the first sleeve part 211, first connects
The internal thread of the external screw thread in portion 231 and the first sleeve part 211 cooperates.Second connecting portion 232 is stretching into second sleeve portion 221
The inner wall with second sleeve portion 221 is slidably matched afterwards, as a result, during use, can be by driving on ratchet screw rod 230
Ratchet 233 rotation so that the ratchet screw rod 230 is rotated relative to self-regulated supporting rod 220 and self-regulated swivel nut 210, and
During ratchet screw rod 230 rotates, since itself and self-regulated swivel nut 210 are screw-thread fit, and self-regulated swivel nut 210 is relatively fixed,
Therefore during ratchet screw rod 230 rotates, ratchet screw rod 230 can move linearly relative to self-regulated swivel nut 210, to push two
The shoe brake of side compensates the gap generated due to abrasion between shoe brake and brake drum close to brake drum.And due to spine
Take turns during screw rod 230 rotates, due to ratchet screw rod 230 butting section 234 and second sleeve portion 221 end against,
When ratchet screw rod 230 is rotated relative to self-regulated supporting rod 220, contacted with the end in second sleeve portion 221 by butting section 234,
It can avoid when ratchet screw rod 230 rotates, the loss to the root of ratchet 233.
Specifically, butting section 234 includes the annular projection being arranged between second connecting portion 232 and ratchet 233.By setting
It sets the annular projection between second connecting portion 232 and ratchet 233 and can bear self-regulated supporting rod 220 during use and apply
The stress being added on ratchet 233 avoids stress from being applied directly on ratchet 233, cause the position of ratchet 233 change or
Damage causes the service life reduction of the self-adjusting mechanism assembly 200 and use cost to rise.
Further, in this embodiment, when setting above-mentioned butting section 234 to annular projection, cyclic annular convex
Rise close to the side in second sleeve portion 221 can be arranged for the end with second sleeve portion 221 against arcwall face.Pass through arc
Shape face is contacted with the end in second sleeve portion 221, when ratchet screw rod 230 is rotated relative to self-regulated supporting rod 220, passes through arc
The end sliding contact in face and second sleeve portion 221, can be while reducing ratchet 230 rotary resistance of screw rod, additionally it is possible to drop
Low abrasion improves the stationarity of rotation.
In addition.In this embodiment, first connecting portion 231, second connecting portion 232 and 233 integral type of ratchet are made.
And the length of first connecting portion 231 is more than the length of second connecting portion 232.
Further, in this embodiment, lubricant layer is equipped between external screw thread and internal thread.Specifically, lubricant layer
It may include the lithium base grease layer being attached between external screw thread and the mating surface of internal thread.Pass through setting for the lithium base grease layer
It sets, the rotary resistance between the internal thread on the external screw thread and the first sleeve part 211 in first connecting portion 231 can be reduced, drop
Abrasion between low first connecting portion 231 and the first sleeve part 211, improves the service life of the self-adjusting mechanism assembly 200.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of self-adjusting mechanism assembly, which is characterized in that including：
Self-regulated swivel nut, the self-regulated swivel nut include the first sleeve part and the first support portion being oppositely arranged, first sleeve
Internal thread is provided in portion；
Self-regulated supporting rod, the self-regulated supporting rod include the second sleeve portion being oppositely arranged and the second support portion；
Ratchet screw rod, the ratchet screw rod include first connecting portion, second connecting portion and setting in the first connecting portion and
The peripheral surface of ratchet between the second connecting portion, the first connecting portion is equipped with external screw thread；In the second connecting portion
It is additionally provided with butting section between the ratchet；
First support portion is connect with two brake-shoes respectively with second support portion；The first connecting portion is for stretching into
First sleeve part, and make the external screw thread and the internal thread screw-thread fit；The second connecting portion is for stretching into institute
Second sleeve portion is stated, and is slidably matched with the inner wall in the second sleeve portion；The butting section is used in the second connecting portion
Stretch into the end behind the second sleeve portion with the second sleeve portion against.
2. self-adjusting mechanism assembly according to claim 1, it is characterised in that：
The butting section includes the annular projection being arranged between the second connecting portion and the ratchet.
3. self-adjusting mechanism assembly according to claim 2, it is characterised in that：
The annular projection close to the second sleeve portion side be equipped with for the end with the second sleeve portion against
Arcwall face.
4. self-adjusting mechanism assembly according to claim 1, it is characterised in that：
The first connecting portion, the second connecting portion and the ratchet integral type are made.
5. self-adjusting mechanism assembly according to claim 1, it is characterised in that：
Lubricant layer is equipped between the external screw thread and the internal thread.
6. self-adjusting mechanism assembly according to claim 5, it is characterised in that：
The lubricant layer includes the lithium base grease layer being attached between the external screw thread and the mating surface of the internal thread.
7. self-adjusting mechanism assembly according to claim 1, it is characterised in that：
The length of the first connecting portion is more than the length of the second connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082422.1U CN207777483U (en) | 2018-01-18 | 2018-01-18 | A kind of self-adjusting mechanism assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082422.1U CN207777483U (en) | 2018-01-18 | 2018-01-18 | A kind of self-adjusting mechanism assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207777483U true CN207777483U (en) | 2018-08-28 |
Family
ID=63213582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820082422.1U Expired - Fee Related CN207777483U (en) | 2018-01-18 | 2018-01-18 | A kind of self-adjusting mechanism assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207777483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242746A (en) * | 2019-07-23 | 2019-09-17 | 霸州市华诚汽车制动器有限公司 | A kind of parking brake |
-
2018
- 2018-01-18 CN CN201820082422.1U patent/CN207777483U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242746A (en) * | 2019-07-23 | 2019-09-17 | 霸州市华诚汽车制动器有限公司 | A kind of parking brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180828 Termination date: 20220118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |