CN205841587U - In a kind of, locking type braking gap adjusts arm - Google Patents
In a kind of, locking type braking gap adjusts arm Download PDFInfo
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- CN205841587U CN205841587U CN201620771060.8U CN201620771060U CN205841587U CN 205841587 U CN205841587 U CN 205841587U CN 201620771060 U CN201620771060 U CN 201620771060U CN 205841587 U CN205841587 U CN 205841587U
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- locking piece
- worm
- locking
- braking gap
- arm
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Abstract
In a kind of, locking type braking gap adjusts arm, including arm body, worm gear, worm screw, worm shaft, locking piece and elastic component；Described worm screw fixed cover is located on described worm shaft, and described worm screw engages with described worm gear；Described worm shaft includes that head and axis body, described locking piece are set in un-rotatably on described axis body and are respectively equipped with corresponding locking structure on the face that contacts with described head contact, described locking piece and described head；Described elastic component props up described locking piece, and the compressible described elastic component of described locking piece also moves axially relative to described axis body, and described locking piece can be by described elastic component pushed home.Interior locking type braking gap of the present utility model adjusts arm, use locking structure, make locking piece, under the effect of elastic force, worm shaft be produced spline moment, the stable engagement between worm gear, worm screw can be kept and transmit skidding moment, also the Adjustment precision that can make braking gap improves, beneficially the steady operation of brake system of car.
Description
Technical field
This utility model relates to a kind of automotive brake component, particularly relates to a kind of braking gap and adjusts arm.
Background technology
Braking gap adjusts arm, for adjusting the braking gap of the drum brake in brake system of car, specifically for
Gap length inside regulation friction plate and brake drum.When driver's brake pedal, air chamber push rod promotes and adjusts arm, adjusts
The worm gear of whole arm drives cam axle, and cam promotes brake-shoe, so that friction plate is close to brake drum inner surface, eliminates both
Between gap, and then be pressed on brake drum.Along with practicality to brake during running car, brake block and brake drum occur
Abrasion, makes braking gap increase, now needs to be adjusted braking gap.The worm shaft adjusting arm is rotated with spanner,
Adjust braking gap.
Adjustment arm of the prior art, including worm gear, worm screw and worm shaft, wherein, worm gear and worm engaging, worm screw is sheathed
On worm shaft, when rotary worm axle, worm gear can be made to rotate, and then adjust braking gap.But the defect of prior art is, its
Worm shaft does not has corresponding locking structure, easy autorotation or appearance to loosen, and the engagement between worm and gear is unstable, it is impossible to essence
Really transmission skidding moment, and the Adjustment precision of braking gap is low, is unfavorable for the steady operation of brake system of car；Or worm screw
The locking structure tension of axle, inconvenience adjusts braking gap.
Summary of the invention
In order to solve above-mentioned technical problem, this utility model provides and a kind of engages stable, the Adjustment precision of braking gap
High braking gap adjusts arm.
This utility model be the technical scheme is that
In a kind of, locking type braking gap adjusts arm, including arm body, worm gear, worm screw, worm shaft, locking piece and elastic component；
Described arm body is provided with worm wheel aperture, worm hole and axis hole, and described worm gear, worm screw and worm shaft are rotatable but can not translationally distinguish
It is arranged in described worm wheel aperture, worm wheel aperture and axis hole；Described worm screw fixed cover is located on described worm shaft, and described worm screw is with described
Worm gear engages；Described worm shaft include head and axis body, described locking piece be set in un-rotatably on described axis body and with institute
State and be respectively equipped with corresponding locking structure on the face that head contact, described locking piece and described head contact；Described elastic component
Propping up described locking piece, the compressible described elastic component of described locking piece also moves axially relative to described axis body, and described locking
Part can be by described elastic component pushed home.
Interior locking type braking gap of the present utility model adjusts arm, uses locking structure, makes locking piece at the work of elastic force
With lower, worm shaft is produced spline moment, the stable engagement between worm gear, worm screw can be kept and transmit skidding moment, it is possible to making
The Adjustment precision of braking gap improves, the beneficially steady operation of brake system of car.
Further, the head of described locking piece and described worm shaft is contacted by its end face respectively, on described end face
The locking structure being correspondingly provided with is respectively protruding and groove.
Further, described locking piece is circular, and the end face that described locking piece and described worm shaft contact is plane.
Further, described locking piece is the most equidistantly provided with multiple projection, on the head of described worm shaft
The most equidistantly it is provided with multiple groove.
Further, described projection is that semi-cylindrical is protruding, and the central shaft of described semi-cylindrical projection is through described locking
The central shaft of part the central axis with described locking piece.
Further, the head of described worm shaft includes prism and annular boss, described annular boss and described locking piece
It is mutually locked.
Further, the lateral surface of described locking piece is provided with locking ear, and described locking piece passes through described locking ear and institute
The shaft hole inner wall stating arm body is fixed un-rotatably.
Further, described elastic component is spring.
Further, described axis hole is provided with step；Also including spacing pin, its length is more than the axis body of described worm shaft
Diameter, described spacing pin inserts in described axis body, and its position stretching out described axis body props up described step.
Further, the end of the axis body of described worm shaft is provided with annular groove；Also include spring column pin, described post
Pin is inserted perpendicularly in described arm body, and through described annular groove.
In order to be more fully understood that and implement, describe this utility model below in conjunction with the accompanying drawings in detail.
Accompanying drawing explanation
Fig. 1 is the front view that interior locking type braking gap of the present utility model adjusts arm；
Fig. 2 is the top view that interior locking type braking gap of the present utility model adjusts arm；
Fig. 3 is the axonometric chart of worm shaft of the present utility model；
Fig. 4 is the axonometric chart of locking piece of the present utility model.
Detailed description of the invention
Referring to Fig. 1 and 2, it is respectively interior locking type braking gap of the present utility model and adjusts front view and the vertical view of arm
Figure.Interior locking type braking gap of the present utility model adjusts arm (hereinafter referred to as adjusting arm) and includes arm body 1, worm gear 2, worm screw 3, snail
Bar axle 4, locking piece 5, elastic component 6, sealing ring 7, cover plate 8 and lubricating cup 9.Wherein, worm gear 2, worm screw 3, worm shaft 4, locking piece 5,
It is internal that elastic component 6 and sealing ring 7 are arranged on arm body 1, and this worm screw 3 is set on worm shaft 4, and worm gear 2 engages with worm screw 3, locking
Part 5 and elastic component 6 are set on worm shaft 4, and sealing ring 7 is set on locking piece 5.Cover plate 8 is fixed on arm body 1 surface, lubricating cup 9
It is fixed on the side of arm body 1.
Being provided with worm wheel aperture, worm hole and axis hole in this arm body 1, its shape is relative with worm gear 2, worm screw 3, worm shaft 4 respectively
Should, the inwall of described axis hole is provided with step.
This worm gear 2, worm screw 3, worm shaft 4 rotatably but can not translationally be separately fixed at the worm wheel aperture of arm body 1, worm hole
With in axis hole, wherein, worm screw 3 is set on worm shaft 4, and worm gear 2 engages with worm screw 3, when worm shaft 4 rotates, can pass through snail
Bar 3 drives worm gear 2 to rotate.
Referring to Fig. 3, it is the axonometric chart of worm shaft of the present utility model.This worm shaft 4 include head 41, axis body 42,
Spacing pin 43 and spring column pin 44.This head 41 includes prism 411 and annular boss 412, this prism 411 be hexagonal prismoid or
Anistree prism, is used for using spanner to rotate this worm shaft 4.One side end face of this annular boss 412 and described prism 411
Laminating is fixing, and its other end is fixing with axis body 42 laminating, and this other end is plane, and this plane is provided with locking structure, this
Embodiment is specially groove 4121.This axis body 42 is provided with spacing hole 423, and this spacing pin 43 may pass through this spacing hole 423,
The length of this spacing pin 43 is more than the diameter of axis body 42, and its position stretching out axis body 42 props up the step on the inwall of axis hole,
Limit moving axially of worm shaft 4, prevent it internal mobile to arm body 1.It is additionally provided with fitting plane 422 on this axis body 42, is used for
With this fixing assembling of worm screw 3.The end of this axis body 42 is additionally provided with annular groove 421, and this spring column pin 44 is inserted perpendicularly into arm body 1
In, and through this annular groove 421, limit moving axially of worm shaft 4 further.
Referring to Fig. 4, it is the axonometric chart of locking piece of the present utility model.This locking piece 5 is circular, and it is set in this
On axis body 42, one end is plane, and with an end contact of this annular boss 412.On the planar end of this locking piece 5
Be provided with locking structure, be specially half-terete protruding 51 in the present embodiment, i.e. its shape is about the half of cylinder, this projection 51
Having multiple, it is distributed on the end face of locking piece 5 the most equally spacedly.In other embodiments, this projection 51 is also
Can be other shapes with arcuation cylinder, as coniform, round table-like etc..Further, the central shaft of this projection 51 is worn
Cross this locking piece 5 central shaft and with the central axis of this locking piece 5.The shape of the groove 4121 on this annular boss 412
Size is corresponding with this projection 51, makes this annular boss 412 can be contacted and real in a rotational direction by end face with locking piece 5
Existing locking.The annular side of this locking piece 5 is provided with locking ear 52, and this locking ear 52 engages with the inwall of axis hole, makes this locking
Part can not circumferentially rotate relative to shaft hole inner wall.
This elastic component 6 is specially spring, and it is set on axis body 42, and its one end props up the end face of this locking piece 5, the other end
Prop up spacing pin 43.In other embodiments, this elastic component other can also have resilient element.When worm shaft 4 is quiet
Time only, the elastic force of spring is pushed locking piece 5 to annular boss 412, is made both end faces fit, groove 4121 and protruding 51 phases
The most sealed；When worm shaft 4 has the trend of rotation, locking piece 5 produces spline moment under the thrust of spring, to worm shaft 4
Rotation produces and obstructs, and makes worm shaft 4 tend to stable under the effect of spline moment, and then prevents worm shaft 4 from loosening rotation, impact
Engagement between worm and gear, reduces the precision of braking gap.When needs regulation brake distance, with spanner with more than spline moment
Power rotary worm axle 4.
This sealing ring 7 is set on annular boss 412 or locking piece 5, to keep arm body cleaning inside, good antifouling effect.
This cover plate 8 is fixed on the surface of arm body 1.This lubricating cup 9 is fixed on the sidewall of arm body 1.
In other embodiments, locking piece can also be that other have frictional force with the locking structure on annular boss
Structure, as coarse surface or other be provided with the surface etc. of irregular structure.
Interior locking type braking gap of the present utility model adjusts arm, uses locking structure, makes locking piece at the work of elastic force
With lower, worm shaft is produced spline moment, the stable engagement between worm gear, worm screw can be kept and transmit skidding moment, it is possible to making
The Adjustment precision of braking gap improves, the beneficially steady operation of brake system of car.
This utility model is not limited to above-mentioned embodiment, if do not taken off various changes of the present utility model or deformation
From spirit and scope of the present utility model, if these are changed and deformation belongs to claim of the present utility model and equivalent technologies
Within the scope of, then this utility model is also intended to comprise these changes and deformation.
Claims (10)
1. locking type braking gap adjusts arm in one kind, it is characterised in that: include arm body, worm gear, worm screw, worm shaft, locking piece
And elastic component；Described arm body is provided with worm wheel aperture, worm hole and axis hole, described worm gear, worm screw and worm shaft rotatable but can not
Translationally it is separately positioned in described worm wheel aperture, worm wheel aperture and axis hole；Described worm screw fixed cover is located on described worm shaft, described
Worm screw engages with described worm gear；Described worm shaft includes that head and axis body, described locking piece are set in described axle un-rotatably
It is respectively equipped with corresponding locking structure on the face contacted on body and with described head contact, described locking piece and described head；
Described elastic component props up described locking piece, and the compressible described elastic component of described locking piece also moves axially relative to described axis body,
And described locking piece can be by described elastic component pushed home.
Interior locking type braking gap the most according to claim 1 adjusts arm, it is characterised in that: described locking piece and described snail
The head of bar axle is contacted by its end face respectively, and the locking structure that described end face is correspondingly provided with is respectively protruding and groove.
Interior locking type braking gap the most according to claim 2 adjusts arm, it is characterised in that: described locking piece is annulus
The end face that shape, described locking piece and described worm shaft contact is plane.
Interior locking type braking gap the most according to claim 3 adjusts arm, it is characterised in that: on described locking piece circumferentially
Direction is equidistantly provided with multiple projection, and the head of described worm shaft is the most equidistantly provided with multiple groove.
Interior locking type braking gap the most according to claim 3 adjusts arm, it is characterised in that: described projection is semi-cylindrical
Projection, the protruding central shaft of described semi-cylindrical through the central shaft of described locking piece and hangs down with the central shaft of described locking piece
Directly.
Interior locking type braking gap the most according to any one of claim 1 to 5 adjusts arm, it is characterised in that: described snail
The head of bar axle includes that prism and annular boss, described annular boss are mutually locked with described locking piece.
Interior locking type braking gap the most according to any one of claim 1 to 5 adjusts arm, it is characterised in that: described lock
The lateral surface of stop member is provided with locking ear, and described locking piece is the most rotatable with the shaft hole inner wall of described arm body by described locking ear
Fix.
Interior locking type braking gap the most according to any one of claim 1 to 5 adjusts arm, it is characterised in that: described bullet
Property part is spring.
Interior locking type braking gap the most according to any one of claim 1 to 5 adjusts arm, it is characterised in that: described axle
Hole is provided with step；Also including spacing pin, its length is inserted more than the diameter of the axis body of described worm shaft, described spacing pin
In described axis body, its position stretching out described axis body props up described step.
Interior locking type braking gap the most according to any one of claim 1 to 5 adjusts arm, it is characterised in that: described snail
The end of the axis body of bar axle is provided with annular groove；Also include that spring column pin, described spring column pin are inserted perpendicularly in described arm body, and
Through described annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620771060.8U CN205841587U (en) | 2016-07-20 | 2016-07-20 | In a kind of, locking type braking gap adjusts arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620771060.8U CN205841587U (en) | 2016-07-20 | 2016-07-20 | In a kind of, locking type braking gap adjusts arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841587U true CN205841587U (en) | 2016-12-28 |
Family
ID=57625162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620771060.8U Active CN205841587U (en) | 2016-07-20 | 2016-07-20 | In a kind of, locking type braking gap adjusts arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841587U (en) |
-
2016
- 2016-07-20 CN CN201620771060.8U patent/CN205841587U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |