CN209654484U - A kind of adjustment arm - Google Patents
A kind of adjustment arm Download PDFInfo
- Publication number
- CN209654484U CN209654484U CN201920317232.8U CN201920317232U CN209654484U CN 209654484 U CN209654484 U CN 209654484U CN 201920317232 U CN201920317232 U CN 201920317232U CN 209654484 U CN209654484 U CN 209654484U
- Authority
- CN
- China
- Prior art keywords
- shell casting
- worm screw
- worm
- axle sleeve
- adjustment arm
- 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.)
- Expired - Fee Related
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- Braking Arrangements (AREA)
Abstract
The utility model provides a kind of adjustment arm, belongs to field of mechanical technique.It is elongated that it solves the problems, such as that existing adjustment arm oil leak and braking thread are easy.This adjustment arm, including shell casting, worm gear, worm screw and positioning cover plate, two sides on worm screw positioned at its gear teeth are provided with the support portion of integral structure, clearance fit plays the role of supporting worm between two support portions and shell casting inner wall, the end sleeve of worm screw is equipped with axle sleeve, it is connected and fixed between axle sleeve and shell casting by being threadedly engaged, it is located at outside shell casting on axle sleeve and is screwed with fastening nut, sealing ring is arranged on worm screw, the sealing ring is between axle sleeve and support portion, the inner elastomeric of shell casting is connected with the pawl that can be stretched, the top of pawl and the bottom of the tooth of worm gear are inconsistent, and it is planar structure that an end face of the pawl, which is globoidal structure other end,.It is more accurate that the utility model has the advantages that better tightness thread is adjusted.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of vehicle braking gap adjusting mechanism, in particular to a kind of
Adjust arm.
Background technique
Between shoe brake and brake drum in vehicle driving brake will there are a normal, reasonable minimum clearance,
Be commonly called as brake clearance, to guarantee the optimal braking effect of brake, but this gap can because of the use of brake, the abrasion of shoe plate and
Be gradually increased, four-wheel gap cannot be same, phenomena such as leading to braking retardation, sideslip, poor stop frequent occurrence, to driving
Hidden danger is brought, or even causes traffic accident.Therefore, the position that adjust shoe brake in time makes it keep and brake
Normal brake application gap between drum, adjustment arm are a kind of for adjusting the regulating mechanism in the gap, and adjustment arm is divided into automatic tune
Whole and manually adjust, automatic adjusting arm is generally used on the advanced vehicles such as private car, in other compact cars and specific use vehicle
Middle application is usually hand regulation arm, smooth in order to make to adjust the worm and gear engagement in arm, internal to be usually perfused with profit
Lubricating oil, and conventional sealing structure is easy to appear loosening after its adjusting and makes sealing ring that can not cause to moisten with contact surface tight fit
Lubricating oil overflows, and since worm gear and worm screw can not accomplish very clearance fit, being easy to appear revolution after adjustment makes
It is again elongated to brake thread.
Summary of the invention
The purpose of this utility model is to provide a kind of better tightness simultaneously for the above-mentioned problems in the prior art
And the vehicle braking gap adjustment arm that can prevent worm gear from turning round.
The purpose of this utility model can be realized by the following technical scheme: a kind of adjustment arm, including shell casting, snail
Wheel, worm screw and positioning cover plate, the inside of the shell casting offers cavity structure, and worm gear and worm screw intermeshing are installed on
In shell casting, the positioning cover plate is connect with worm gear can drive its rotation by worm gear, which is characterized in that the snail
Two sides on bar positioned at its gear teeth are provided with the support portion of integral structure, support portion described in two and shell casting inner wall it
Between clearance fit play the role of supporting worm, the end sleeve of the worm screw is equipped with axle sleeve, passes through between axle sleeve and shell casting
It is threadedly engaged and is connected and fixed, be located at outside shell casting on axle sleeve and be screwed with fastening nut, be arranged with sealing ring on the worm screw, it should
Sealing ring is between axle sleeve and support portion, and the inner elastomeric of the shell casting is connected with the pawl that can be stretched, pawl
The bottom of the tooth of top and worm gear is inconsistent, and it is planar structure that an end face of the pawl, which is globoidal structure other end,.
The technical effect and principle of this adjustment arm are as follows: worm screw realizes System of Rotating about Fixed Axis by the support portion support at both ends, abandons
Traditional bearing support, manufacturing cost can effectively reduce, and when vehicle braking thread is elongated, pass through rotary worm and band
Dynamic worm gear makes positioning cover plate rotation to realize the adjusting of brake clearance simultaneously, wherein the rotation due to worm screw can change sealing ring
Seal clearance be easy to cause oil leak after adjusting, the utility model rotates axle sleeve inside by the design of the axle sleeve that is threadedly engaged
Sealing ring and support portion conflict are fixed by operation, thus after effective solution conciliation the case where oil leak, and axle sleeve axis
Set also acts the effect of further supporting worm, in order to which axle sleeve fixation is preferably prevented its loosening, the outside of axle sleeve also
Being provided with fastening nut fastens it with shell casting, and worm gear reverses in order to prevent, is provided between worm gear and shell casting
Telescopic pawl, pawl bottom is realized by spring connection stretches, and passes through the arc on contact pawl when worm gear rotates in the forward direction
Face structure is pushed, and since its other end is planar structure, can effectively fix, solve after worm gear rotation
The problem of worm gear gyration aperture.
In a kind of above-mentioned adjustment arm, support spring is provided between the bottom and shell casting inner wall of the worm screw.
In a kind of above-mentioned adjustment arm, the oiling being connected to its internal cavity structures is offered on the shell casting
Mouthful.
In a kind of above-mentioned adjustment arm, opened up side by side on the shell casting there are three brake connecting hole, it is described
Positioning cover plate on offer several brake plate connecting holes.
Compared with prior art, this adjustment arm has the advantage that 1, adjusts sealing ring by the axle sleeve being threadedly engaged
Gap can make its sealing effect more preferable；2, since the stationarity of worm gear is more preferable, the adjusting of brake clearance can be made more accurate；
3, the support of traditional bearing has been abandoned, manufacturing cost is lower.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of this adjustment arm.
In figure, 1, shell casting；2, worm gear；3, worm screw；4, positioning cover plate；5, support portion；6, axle sleeve；7, fastening nut；
8, sealing ring；9, pawl；10, support spring；11, pouring orifice；12, brake connecting hole；13, brake plate connecting hole.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, this adjustment arm, including shell casting 1, worm gear 2, worm screw 3 and positioning cover plate 4, shell casting 1 it is interior
Portion offers cavity structure, and worm gear 2 and the intermeshing of worm screw 3 are installed in shell casting 1, and positioning cover plate 4 is connect with worm gear 2
Its rotation can be driven by worm gear 2, the two sides that its gear teeth is located on worm screw 3 are provided with the support portion 5 of integral structure, and two
Clearance fit plays the role of supporting worm 3 between 1 inner wall of support portion 5 and shell casting, and the end sleeve of worm screw 3 is equipped with axle sleeve 6,
It is connected and fixed between axle sleeve 6 and shell casting 1 by being threadedly engaged, is located at outside shell casting 1 on axle sleeve 6 and is screwed with fastening nut 7,
Sealing ring 8 is arranged on worm screw 3, between axle sleeve 6 and support portion 5, the inner elastomeric of shell casting 1 connects the sealing ring 8
There is the pawl 9 that can be stretched, the top of pawl 9 and the bottom of the tooth of worm gear 2 are inconsistent, and an end face of the pawl 9 is globoidal structure
Other end is planar structure.
It further describes in detail, is provided with support spring 10, support spring 10 between 1 inner wall of bottom and shell casting of worm screw 3
Design can play the role of one buffering, and be convenient for worm screw 3 rotation.
Further, the pouring orifice 11 being connected to its internal cavity structures is offered on shell casting 1, passes through pouring orifice 11
It can be toward lubricating oil be perfused inside shell casting 1.
Further, brake connecting hole 12 there are three being opened up side by side on shell casting 1, if being offered on positioning cover plate 4
Drying movable plate connecting hole 13, to realize the connection between adjustment arm and brake plate and brake.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although shell casting 1, worm gear 2, worm screw 3, positioning cover plate 4, support portion 5, axle sleeve 6, tight is used more herein
Gu arts such as nut 7, sealing ring 8, pawl 9, support spring 10, pouring orifice 11, brake connecting hole 12, brake plate connecting holes 13
Language, but it does not exclude the possibility of using other terms.The use of these items is only for be more convenient to describe and explain this
The essence of utility model；It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.
Claims (4)
1. a kind of adjustment arm, including shell casting (1), worm gear (2), worm screw (3) and positioning cover plate (4), the shell casting (1)
Inside offer cavity structure, and worm gear (2) and worm screw (3) intermeshing are installed in shell casting (1), the positioning
Cover board (4) is connect with worm gear (2) can drive its rotation by worm gear (2), which is characterized in that be located on the worm screw (3)
The two sides of its gear teeth are provided with the support portion (5) of integral structure, support portion described in two (5) and shell casting (1) inner wall
Between clearance fit play the role of supporting worm (3), the end sleeve of the worm screw (3) is equipped with axle sleeve (6), axle sleeve (6) and shell
It is connected and fixed between body casting (1) by being threadedly engaged, is located at outside shell casting (1) on axle sleeve (6) and is screwed with fastening nut (7),
Sealing ring (8) are arranged on the worm screw (3), which is located between axle sleeve (6) and support portion (5), the shell
The inner elastomeric of casting (1) is connected with the pawl (9) that can be stretched, and the top of pawl (9) and the bottom of the tooth of worm gear (2) are inconsistent,
And it is planar structure that an end face of the pawl (9), which is globoidal structure other end,.
2. a kind of adjustment arm according to claim 1, which is characterized in that the bottom and shell casting (1) of the worm screw (3)
Support spring (10) are provided between inner wall.
3. a kind of adjustment arm according to claim 1, which is characterized in that offered on the shell casting (1) and its
The pouring orifice (11) of internal cavity structures connection.
4. a kind of adjustment arm according to claim 1, which is characterized in that offered side by side on the shell casting (1)
Three brake connecting holes (12) offer several brake plate connecting holes (13) on the positioning cover plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920317232.8U CN209654484U (en) | 2019-03-13 | 2019-03-13 | A kind of adjustment arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920317232.8U CN209654484U (en) | 2019-03-13 | 2019-03-13 | A kind of adjustment arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209654484U true CN209654484U (en) | 2019-11-19 |
Family
ID=68526882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920317232.8U Expired - Fee Related CN209654484U (en) | 2019-03-13 | 2019-03-13 | A kind of adjustment arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209654484U (en) |
-
2019
- 2019-03-13 CN CN201920317232.8U patent/CN209654484U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 Termination date: 20210313 |