CN209262229U - A kind of speed changer self-locking structure - Google Patents
A kind of speed changer self-locking structure Download PDFInfo
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- CN209262229U CN209262229U CN201821559922.6U CN201821559922U CN209262229U CN 209262229 U CN209262229 U CN 209262229U CN 201821559922 U CN201821559922 U CN 201821559922U CN 209262229 U CN209262229 U CN 209262229U
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- shift fork
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- steel ball
- axle
- fork axle
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Abstract
The utility model belongs to transmission technology field, and in particular to a kind of speed changer self-locking structure, it is therefore intended that solves the problems, such as that axial occupation space is big when existing self-locking structure is installed in transmission case body.The self-locking structure includes that gear shifting pulling head, shift fork, shift fork axle, compressed spring and self-locking steel ball, shift fork are socketed in shift fork axle, and gear shifting pulling head is clamped with shift fork and shift fork can be made to move forward and backward along shift fork axle；Shift fork axle is fixed on case of transmission；Shift fork is equipped with perpendicular to axial spring installation cavity, and the spring installation cavity is interior to be equipped with compressed spring, and the end of compressed spring is equipped with self-locking steel ball；There are three annular grooves for setting in shift fork axle, respectively represent two gears and neutral gear position；Self-locking steel ball is contacted by the pressure of compressed spring with the annular groove above shift fork axle.
Description
Technical field
The utility model belongs to transmission technology field, and in particular to a kind of speed changer self-locking structure.
Background technique
Currently, the self-locking structure of shift of transmission system generallys use the fixed spring on shell, it is arranged in spring end
Steel ball is compressed, compression steel ball contacts groove different in shift fork axle, to realize the self-locking of different gears.The shortcomings that structure is to become
Fast device shell needs the space of reserved shift fork axle, and when speed changer axial dimension is at full stretch, which can occupy speed change
The biggish ratio of device length dimension.Needing to design a kind of self-locking structure can still may be implemented in the case where shift fork axle is motionless
It is self-locking.
Summary of the invention
When installing in transmission case body utility model aims to solve existing self-locking structure, need to occupy axial direction
The problem of space larger size, proposes a kind of speed changer self-locking structure.
In order to complete above-mentioned purpose, the technical solution that the utility model is proposed is:
A kind of speed changer self-locking structure, be characterized in that including gear shifting pulling head, shift fork, shift fork axle, compressed spring and
Self-locking steel ball, shift fork are socketed in shift fork axle, and gear shifting pulling head is clamped with shift fork and shift fork can be made to move forward and backward along shift fork axle；
Shift fork is equipped with perpendicular to axial spring installation cavity, and the spring installation cavity is interior to be equipped with compressed spring, compresses bullet
The end of spring is equipped with self-locking steel ball；
There are three annular grooves for setting in shift fork axle, respectively represent two gears and neutral gear position；
Self-locking steel ball is contacted by the pressure of compressed spring with the annular groove above shift fork axle.
Further, the end face of the spring installation cavity is equipped with the stomata being connected to outside, when self-locking steel ball exists
It in spring installation cavity when movement, is exhausted and air-breathing, and then the air pressure inside and outside spring installation cavity is balanced in time, prevent
Influence shift performance.
Further, the two sides of the shift fork are respectively equipped with a shift fork groove, and gear shifting pulling head is equipped with and shift fork groove
The support arm of compatible " u "-shaped set, " u "-shaped set both ends is connected in the shift fork groove of shift fork two sides, gear shifting pulling head and shift fork
Contact area is big, and shift is reliable, while can also prevent gear shifting pulling head from rotating along shifting block axis hole.
Compared with the prior art, the advantages of the utility model are:
1, the utility model shift fork axle is fixedly mounted on speed changer by the front and back shift fork axis hole on case of transmission, is dialled
Fork shaft is fixed, and shift fork can be moved forward and backward along shift fork axle.Shift fork driven when moving compressed spring mounted thereto and
Self-locking steel ball moves forward and backward, and since compressed spring is in pressured state always, self-locking steel ball is in close contact after being pressurized with shift fork axle.
When shift fork is put into gear, self-locking steel ball need to cross the lug boss between two neighboring annular groove, need further compressed spring, right
Self-locking steel ball generates bigger pressure, and shift fork is needed further power that could shift gears movement, otherwise can to overcome the strength
It is locked in the groove of current shift.In conclusion the self-locking structure of the utility model is in the case where shift fork axle is motionless
It can be achieved self-locking, do not need the space that reserved shift fork axle moves forward and backward, keep speed changer structure design more compact and reasonable.
2, the end face of spring installation cavity is equipped with the stomata being connected to outside, when self-locking steel ball is in spring installation cavity
It when movement, is exhausted and air-breathing, and then the air pressure inside and outside spring installation cavity is balanced in time, prevent from influencing shift property
Energy.
3, the two sides of shift fork are respectively equipped with a groove, and gear shifting pulling head is equipped with compatible at shift fork groove setting
The support arm of " u "-shaped set, " u "-shaped set both ends is connected in the groove of shift fork two sides, and the contact area of gear shifting pulling head and shift fork is big, changes
Gear is reliable, while can also prevent gear shifting pulling head from rotating along shifting block axis hole.
Detailed description of the invention
Fig. 1 is the explosive view of speed changer self-locking structure in the utility model embodiment；
Fig. 2 is the partial sectional view of speed changer self-locking structure in utility model embodiment.
In figure: 1-gear shifting pulling head, 2-shift forks, 3-shift fork axles, 4-compressed springs, 5-self-locking steel balls, 11-" u "-shapeds
Set, 21-spring installation cavitys, 22-stomatas, 31-annular grooves.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution in embodiment is clearly and completely described in attached drawing in type embodiment, and following embodiment is for illustrating this
Utility model, but be not intended to limit the scope of the present invention.
Referring to Fig. 1 and Fig. 2, a kind of speed changer self-locking structure, including gear shifting pulling head, shift fork, shift fork axle, compressed spring and from
Steel ball is locked, shift fork is socketed in shift fork axle, and gear shifting pulling head is clamped with shift fork and shift fork can be made to move forward and backward along shift fork axle；It uses
When shift fork axle it is fixed on the case of transmission；Shift fork is equipped with perpendicular to axial spring installation cavity, the spring peace
Compressed spring is equipped in behaveing affectedly, the end of compressed spring is equipped with self-locking steel ball；There are three annular grooves for setting in shift fork axle, respectively
Represent two gears and neutral gear position；The groove face of annular groove is the arcwall face to match with self-locking steel ball, and self-locking steel ball passes through
The pressure of compressed spring is contacted with the annular groove above shift fork axle.
The end face of the spring installation cavity is equipped with the stomata being connected to outside, when self-locking steel ball is in spring installation cavity
It when interior movement, is exhausted and air-breathing, and then the air pressure inside and outside spring installation cavity is balanced in time, prevent from influencing shift property
Energy.
The two sides of the shift fork are respectively equipped with a groove, and gear shifting pulling head is equipped with compatible at shift fork groove setting
The support arm of " u "-shaped set, " u "-shaped set both ends is connected in the groove of shift fork two sides, and the contact area of gear shifting pulling head and shift fork is big, changes
Gear is reliable, while can also prevent gear shifting pulling head from rotating along shifting block axis hole.
Working principle: shift fork axle is fixedly mounted on speed changer by the front and back shift fork axis hole on case of transmission, shift fork
Axis is fixed, and shift fork can be moved forward and backward along shift fork axle.Shift fork driven when moving compressed spring mounted thereto and from
Lock steel ball moves forward and backward, and since compressed spring is in pressured state always, self-locking steel ball is in close contact after being pressurized with shift fork axle.When
When shift fork is put into gear, self-locking steel ball need to cross the lug boss between two neighboring annular groove, need further compressed spring, to certainly
It locks steel ball and generates bigger pressure, shift fork needs further power that could shift gears movement to overcome the strength, otherwise can be by
It locks in the groove of current shift.
It should be noted that above-described is only preferred embodiments of the present invention, for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.
Claims (3)
1. a kind of speed changer self-locking structure, it is characterised in that: including gear shifting pulling head (1), shift fork (2), shift fork axle (3), compression bullet
Spring (4) and self-locking steel ball (5), shift fork (2) are socketed on shift fork axle (3), and gear shifting pulling head (1) is clamped and can make with shift fork (2)
Shift fork (2) is moved forward and backward along shift fork axle (3)；
Shift fork (2) is equipped with perpendicular to axial spring installation cavity (21), and the spring installation cavity (21) is interior to be equipped with compressed spring
(4), the end of compressed spring (4) is equipped with self-locking steel ball (5)；
There are three annular groove (31) for setting in shift fork axle (3), respectively represent two gears and neutral gear position；
Self-locking steel ball (5) is contacted by the pressure of compressed spring (4) with the annular groove (31) of shift fork axle (3) above.
2. speed changer self-locking structure according to claim 1, it is characterised in that: on the end face of the spring installation cavity (21)
The stomata (22) being connected to equipped with one with outside.
3. speed changer self-locking structure according to claim 1 or 2, it is characterised in that: the two sides of the shift fork (2) are set respectively
There is a shift fork groove, gear shifting pulling head (1) is equipped with " u "-shaped set (11) compatible with shift fork groove, " u "-shaped set (11) both ends
Support arm be connected in the shift fork groove of shift fork (2) two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821559922.6U CN209262229U (en) | 2018-09-25 | 2018-09-25 | A kind of speed changer self-locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821559922.6U CN209262229U (en) | 2018-09-25 | 2018-09-25 | A kind of speed changer self-locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209262229U true CN209262229U (en) | 2019-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821559922.6U Active CN209262229U (en) | 2018-09-25 | 2018-09-25 | A kind of speed changer self-locking structure |
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| CN (1) | CN209262229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237018A (en) * | 2018-09-25 | 2019-01-18 | 陕西法士特齿轮有限责任公司 | A kind of speed changer self-locking structure |
-
2018
- 2018-09-25 CN CN201821559922.6U patent/CN209262229U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237018A (en) * | 2018-09-25 | 2019-01-18 | 陕西法士特齿轮有限责任公司 | A kind of speed changer self-locking structure |
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