CN209458318U - Cast forging formula automobile drum type brake hoof - Google Patents
Cast forging formula automobile drum type brake hoof Download PDFInfo
- Publication number
- CN209458318U CN209458318U CN201920098800.XU CN201920098800U CN209458318U CN 209458318 U CN209458318 U CN 209458318U CN 201920098800 U CN201920098800 U CN 201920098800U CN 209458318 U CN209458318 U CN 209458318U
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- China
- Prior art keywords
- hoof
- guide ring
- pilot hole
- drum type
- type brake
- Prior art date
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Abstract
This application involves brake technical fields, disclose a kind of casting forging formula automobile drum type brake hoof comprising neck hoof and from hoof, it leads hoof and is equipped with pilot hole from hoof bottom end, pilot hole is rotatably connected to backing pin, and pilot hole inner wall is connected with the guide ring of variable diameter, and the short diameter of guide ring is equal to the diameter of backing pin.The technical program utilizes a kind of casting forging formula automobile drum type brake hoof, and abrasion loss is big between the pilot hole and backing pin to solve the problems, such as existing brake-shoe.
Description
Technical field
The utility model belongs to brake technical field more particularly to a kind of casting forging formula automobile drum type brake hoof.
Background technique
Neck in existing brake-shoe leads hoof and the end from hoof to be equipped with guiding from brake-shoe including neck hoof and from hoof
Hole, pilot hole is around its internal backing pin rotation, and pilot hole and backing pin are fitted close.Since brake-shoe belongs to brake system
A part, so brake-shoe needs frequent movement, so that the phenomenon that there are continuous frictionals between pilot hole and backing pin, causes to lead hoof
Big with the abrasion loss from hoof, there is a phenomenon where brake-shoes to loosen, falls off, and needs to replace brake-shoe in time to ensure that brake system can
To work normally.
Utility model content
The purpose of this utility model is to provide a kind of casting forging formula automobile drum type brake hoof, to solve existing brake-shoe
The big problem of abrasion loss between pilot hole and backing pin.
In order to achieve the above object, the base case of the utility model provides a kind of casting forging formula automobile drum type brake hoof, packet
It includes neck hoof and from hoof, leads hoof and be equipped with pilot hole from hoof bottom end, pilot hole is rotatably connected to backing pin, and pilot hole inner wall is connected with
The guide ring of variable diameter, the short diameter of guide ring are equal to the diameter of backing pin.
The principle and beneficial effect of this base case are: in the present solution, the short diameter of the diameter of backing pin and guide ring is long
Spend it is identical, so backing pin can cooperate between guide ring.For guide ring in rotation, the ring inner wall at guide ring major diameter will not be complete
Full fitting backing pin reduces frictional force, reduces abrasion loss, can be obviously improved making for brake-shoe to reduce contact area
Use the service life.
Further, the guide ring is eccentrically set in pilot hole.Brake-shoe in backing pin rotation process, pilot hole and
The position of maximum weighted point between backing pin can change, but maximum weighted point is distributed in same section of arc distance always, guiding
The eccentric setting of ring can be such that the stress section of guide ring is not easy to deform, and extend the service life of brake-shoe.
Further, the guide ring is fixed in pilot hole inner wall, and guide ring is made of the first segmental arc and the second segmental arc,
First segmental arc and the second segmental arc are symmetrical arranged along pilot hole central axes.Guide ring is divided into two parts, can respectively by
Two parts are installed in pilot hole, easy for installation, preferably guarantee the inner wall fitting of guide ring and pilot hole.
Further, first segmental arc and the second segmental arc junction are equipped with gap, and the width magnitude range in gap is
0mm~4mm.First segmental arc and the second segmental arc can be sufficiently bonded with pilot hole inner wall, together when pilot hole inner wall is installed
When guide hole size precision is not high, can in the first segmental arc and the second segmental arc junction, there are gaps, in this way can be with
The range for making guide ring applicable is wider.
Further, the guiding ring-side wall and pilot hole side wall junction are radially provided with threaded hole.Can use screw and
Threaded hole cooperation, then uses nut check again, guide ring can be fixed in pilot hole in this way, while guide ring is easy to carry out
Disassembly, is conveniently replaceable.
Further, the guide ring cross section is waist round hole, and the outer wall of such guide ring can be more preferable with pilot hole inner wall
Fitting.
Further, the length range that the long diameter of the guide ring is greater than short diameter is 1mm~4mm, so both can be with
Backing pin cooperation, can also preferably guarantee the fluency of brake-shoe rotation, brake-shoe is avoided to fall off.
Detailed description of the invention
Fig. 1 is the perspective view of the utility model embodiment 1；
Fig. 2 is the enlarged drawing of guide ring in the utility model embodiment 1；
Fig. 3 is the structural schematic diagram of the utility model embodiment 2.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: neck hoof 1, from hoof 2, pilot hole 3, guide ring 5, the first segmental arc 6, the
Two segmental arcs 7, gap 8, threaded hole 9.
Embodiment 1 is basic as shown in attached drawing 1,2:
Forging formula automobile drum type brake hoof is cast, including leads hoof 1 and from hoof 2, leads hoof 1 and be machined with pilot hole from 2 bottom end of hoof
3, pilot hole 3 is rotated around backing pin, and guide ring 5 is variable-diameter structure, and the variable diameter of guide ring 5 is variable diameter radially in the application,
Rather than the variable diameter on the length direction that routinely understands of those skilled in the art.Guide ring 5 is eccentrically set in pilot hole 3, is led
It is equal to the diameter of backing pin to the short diameter of ring 5, the segmental arc of long diameter is close to backing pin lower end.5 cross section of guide ring is waist round hole.
The length range that the long diameter of guide ring 5 is greater than short diameter is 1mm.3 side wall junction diameter of 5 side wall of guide ring and pilot hole
To one threaded hole 9 of processing.
Embodiment 2 is substantially as shown in Fig. 3:
Unlike the first embodiment, the guide ring 5 is made of the first segmental arc 6 and the second segmental arc 7, the first arc
Section 6 and the second segmental arc 7 are fixed in 3 inner wall of pilot hole and are symmetrical arranged along 3 central axes of pilot hole.First segmental arc 6 and second
There are gaps 8 for 7 junction of segmental arc, and the width magnitude range in gap 8 is 2mm.
In above-described embodiment, the length value that the long diameter of guide ring 5 is greater than short diameter can also be 2mm, 3mm, 4mm
Deng as long as in the range of 1mm~4mm.First segmental arc 6 and 7 junction of the second segmental arc are equipped with 8 width value of gap and may be used also
To be 0mm, 1mm, 3mm, 4mm etc., as long as in the range of 0mm~4mm.
Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence
The practicability of effect and utility model that the utility model is implemented.This application claims protection scope should be with its claim
Subject to content, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (7)
1. casting forging formula automobile drum type brake hoof, including leads hoof and from hoof, lead hoof and be equipped with pilot hole from hoof bottom end, pilot hole turns
It is dynamic to be connected with backing pin, which is characterized in that pilot hole inner wall is connected with the guide ring of variable diameter, and the short diameter of guide ring is equal to backing pin
Diameter.
2. casting forging formula automobile drum type brake hoof according to claim 1, which is characterized in that the guide ring is eccentrically set on
In pilot hole.
3. casting forging formula automobile drum type brake hoof according to claim 2, which is characterized in that the guide ring is fixed in guiding
Hole inner wall, guide ring are made of the first segmental arc and the second segmental arc, and the first segmental arc and the second segmental arc are along pilot hole axis
Line is symmetrical arranged.
4. casting forging formula automobile drum type brake hoof according to claim 3, which is characterized in that first segmental arc and second
Segmental arc junction is equipped with gap, and the width magnitude range in gap is 0mm~4mm.
5. casting forging formula automobile drum type brake hoof according to claim 1, which is characterized in that the guiding ring-side wall and guiding
Hole side wall junction is radially provided with threaded hole.
6. casting forging formula automobile drum type brake hoof according to claim 1, which is characterized in that the guide ring cross section is waist
Circular hole.
7. casting forging formula automobile drum type brake hoof according to claim 1, which is characterized in that the long diameter of the guide ring is big
In the length range of short diameter be 1mm~4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920098800.XU CN209458318U (en) | 2019-01-21 | 2019-01-21 | Cast forging formula automobile drum type brake hoof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920098800.XU CN209458318U (en) | 2019-01-21 | 2019-01-21 | Cast forging formula automobile drum type brake hoof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209458318U true CN209458318U (en) | 2019-10-01 |
Family
ID=68045205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920098800.XU Active CN209458318U (en) | 2019-01-21 | 2019-01-21 | Cast forging formula automobile drum type brake hoof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209458318U (en) |
-
2019
- 2019-01-21 CN CN201920098800.XU patent/CN209458318U/en active Active
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