CN203146797U - Automobile differential self-locking device - Google Patents
Automobile differential self-locking device Download PDFInfo
- Publication number
- CN203146797U CN203146797U CN 201320091776 CN201320091776U CN203146797U CN 203146797 U CN203146797 U CN 203146797U CN 201320091776 CN201320091776 CN 201320091776 CN 201320091776 U CN201320091776 U CN 201320091776U CN 203146797 U CN203146797 U CN 203146797U
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- Prior art keywords
- locking
- sleeve
- mouth
- self
- shift shaft
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Abstract
The utility model discloses an automobile differential self-locking device, which comprises a sleeve, a shifting fork shaft and a locking mechanism, wherein the sleeve is embedded in the inner hole of a clutch shell; three groups of locking ports are arranged at intervals on the wall of the sleeve along the axial direction. One end of the shifting fork shaft presses against the inner hole of a differential shell and the other end of the shifting fork shaft stretches into the sleeve and can axially move along a through hole of the sleeve. The locking mechanism is arranged in the sleeve and is fixedly connected with the shifting fork shaft. The radial end part of the locking mechanism corresponding to the side of the locking ports is a locking end. The locking end can be pulled to radially move along with the axial movement of the shifting fork shaft. When the axial position of the locking end and any group of locking ports are at the same level, the locking end contacts and is matched with the corresponding locking ports. The automobile differential self-locking device enables the locking mechanism on the shifting fork shaft and the locking ports on the sleeve to be matched to realize differential gear-shifting self-locking, the quantity of holes in a gearbox shell is reduced and the differential is enabled to have good sealing performance. Therefore the automobile differential self-locking device has the characteristics of simple and compact structure and easiness in manufacturing, and is suitable for various automobile manual differentials.
Description
Technical field
The utility model relates to a kind of vehicular transmission shift control mechanism, relates in particular to a kind of vehicular transmission self-locking mechanism.
Background technique
The speed changer self-locking mechanism can guarantee to shift gears the back combined cover with in conjunction with the whole fits of gear ring, prevent the gearshift off-gear, trip stop.Existing self-locking mechanism comprises case of transmission, declutch shift shaft, self-locking spring, the self-locking steel ball, one end of declutch shift shaft inserts in the clutch housing endoporus, the other end is against in the case of transmission endoporus, declutch shift shaft is provided with three and has certain slope and the identical locking groove of size, have the position, hole on the case of transmission, the self-locking steel ball, self-locking spring is fixed on Kong Weizhong, when declutch shift shaft moves axially to neutral or a certain gear, a locking groove alignment self-locking steel ball must be arranged, so the self-locking steel ball embeds in this locking groove under the effect of self-locking spring pressure, the position of declutch shift shaft namely is fixed, thereby shift fork also is fixed on neutral or a certain gear together with combined cover.During gearshift, the driver applies axial force to declutch shift shaft, and the pressure that overcomes self-locking spring makes the self-locking steel ball break away from the locking groove, and declutch shift shaft can move axially again, enters next gear.
Above-mentioned self-locking mechanism assembling is simple, requirement on machining accuracy is low, but because self-locking mechanism mostly need be located the self-locking steel ball in the machining hole position on case of transmission, not only complex process also influences the sealing of speed changer; In addition, three locking grooves on the declutch shift shaft are because size is basic identical, and during gearshift, the driver can not clearly feel to change at gear and put still neutral gear position, and the locking groove can only one-sided locking, locking power deficiency.
The model utility content
For solving the above deficiency that exists in the prior art, the utility model provides a kind of vehicular transmission self-locking mechanism, this mechanism is by setting up sleeve, at sleeve the locking mouth is set, make the lockable mechanism on the declutch shift shaft cooperate the self-locking of realization shift of transmission with the locking mouth, reducing the perforate quantity on the gear box casing, thereby guarantee that speed changer has excellent sealing performance, have simple and compact for structure, be easy to machining characteristics.
For achieving the above object, the technological scheme that adopts of the utility model is as follows:
A kind of vehicular transmission self-locking mechanism, it comprises sleeve, declutch shift shaft and lockable mechanism, wherein
:
Described sleeve is embedded in the clutch housing endoporus; Sleeve wall upper edge axially spaced-apart is provided with three groups of locking mouths;
One end of declutch shift shaft props up the case of transmission endoporus, and the other end stretches in the sleeve and can move axially along the through hole of sleeve;
Lockable mechanism is positioned at sleeve and connects firmly with declutch shift shaft, and its longitudinal end corresponding to locking mouth place one side is the locking end; The locking end can be with declutch shift shaft move axially the generation radial displacement; The axial position of locking end is equal arbitrary group the time, to contact cooperation with corresponding locking mouth in the locking mouth.
As to restriction of the present utility model, in the described locking mouth, every group of locking mouth has with respect to the central shaft of sleeve axially symmetric structure a pair of each other;
The radially two ends of lockable mechanism are the locking end, and their axial position is equal arbitrary group the time, to contact cooperation with corresponding two locking mouths respectively in the locking mouth.
As further restriction, described two locking ends are the hemispherical shell of inner hollow; Be provided with radially flexible self-locking spring between the two locking ends.
As another kind of the present utility model is limited, one group in described three groups of locking mouths is neutral locking mouth, and two groups is at retaining locking mouth in addition, two groups of both sides that lay respectively at neutral locking mouth at retaining locking mouth; The axial dimension of described neutral locking mouth is greater than the axial dimension at retaining locking mouth, and less than the radius of locking end.
As further restriction, described neutral locking mouth reaches at retaining locking mouth and is bar hole or the circular port structure that runs through sleeve wall.
The utility model also has a kind of restriction, interference fit between described sleeve and clutch endoporus.
Owing to adopted technique scheme, the utility model compared with prior art, obtained technological progress is:
1. this mechanism is by setting up sleeve, at sleeve the locking mouth is set, replace original locking groove that is positioned on the declutch shift shaft, lockable mechanism on the declutch shift shaft replaces original self-locking steel ball and self-locking spring that is arranged in speed change housing endoporus in addition, lockable mechanism contacts with the locking mouth to cooperate realizes the shift of transmission self-locking, this mechanism can reduce the perforate quantity on the gear box casing, guarantees that speed changer has excellent sealing performance;
2. sleeve wall upper edge through hole axially spaced-apart is provided with the locking mouth of three groups of symmetries, and lockable mechanism cooperates with the locking mouth realizes the bilateral locking, thereby makes locking power have bigger adjustable extent;
When 3. declutch shift shaft moves axially, because two locking ends are the hemisphere structure, and be the some contact friction between the sleeve lining, reduced the moving resistance of declutch shift shaft; The hemisphere gabarit can also guarantee locking end radial contraction swimmingly when declutch shift shaft moves axially;
4. the distance that can change two locking ends with compression or the elongation of self-locking spring between the two locking ends makes the locking end snap in the locking mouth when gearshift or breaks away from from the locking mouth;
5. because the axial dimension of neutral locking mouth less than the axial dimension at retaining locking mouth, can strengthen driver's gearshift sense power during gearshift.
In sum, the utlity model has simple and compact for structure, be easy to machining characteristics, and have good locking power, and gearshift sense power strengthens.
The utility model is applicable on the various automobile-used manual transmissions.
Description of drawings
Below in conjunction with drawings and the specific embodiments the utility model is done further to describe in detail.
Fig. 1 is the utility model embodiment 1 overall structure schematic representation;
Fig. 2 is the structural representation of middle lockable mechanism 31 embodiment illustrated in fig. 1;
Fig. 3 is the schematic representation of the lockable mechanism 32 among the utility model embodiment 2;
Fig. 4 is the schematic representation of a kind of concrete structure of lockable mechanism in the utility model.
Among the figure: 1, sleeve; 11, neutral locking mouth; 12, at retaining locking mouth; 13, through hole; 2, declutch shift shaft; 31,32, lockable mechanism; 311,321, locking end; 312,322, self-locking spring; 33, connecting cylinder.
Embodiment
Embodiment 1
A kind of vehicular transmission self-locking mechanism, structure comprise sleeve 1, declutch shift shaft 2 and lockable mechanism 31 as shown in Figure 1.
Sleeve 1 is cylindrical structure, interference press-fits in the clutch housing endoporus, sleeve 1 is provided with through hole 13 vertically, sleeve 1 wall upper edge axially spaced-apart is provided with the locking mouth of three groups of bar hole structures, every group of locking mouth has with respect to the central shaft of sleeve 1 axially symmetric structure a pair of each other, wherein one group is neutral locking mouth 11, two groups is at retaining locking mouth 12 in addition, two groups of both sides that lay respectively at neutral locking mouth 11 at retaining locking mouth 12, the axial dimension of neutral locking mouth 11 is greater than the axial dimension at retaining locking mouth 12, and less than the radius of locking end 311.
An end that has lockable mechanism 31 of declutch shift shaft 2 is positioned at through hole 13, and the other end connects firmly in the case of transmission endoporus, and declutch shift shaft 2 can move between case of transmission and clutch housing.
Declutch shift shaft 2 stretches into the top position of the end end in the sleeve 1, has the post hole that the footpath body runs through, and lockable mechanism 31 is located in the post hole and is positioned at sleeve 1, and the radially two ends of lockable mechanism 31 are locking end 311, can slide along the post hole of declutch shift shaft 2.Two locking ends 311 are the hemispherical shell of inner hollow, the radius difference of two halves spherical shell, their afterbody radially extends to form tail end to the central axis of declutch shift shaft 2 respectively, and final socket links to each other and is slidingly matched, the inside of hemispherical shell is spacing self-locking spring 312, as shown in Figure 2.When declutch shift shaft 2 moves axially, can exert pressure to self-locking spring 312, make its compression, drive two locking ends, 311 radial expansions simultaneously.In the locking mouth, arbitrary group the time, contact cooperation with the corresponding two locking mouths of this group locking mouth respectively when the axial position of two locking ends 311 is equal.
The working procedure of present embodiment is as follows:
When shifter of transmission is carried out gearshift, sleeve 1 keeps motionless, declutch shift shaft 2 moves up and down between case of transmission and clutch housing, 1 pair of locking end 311 of sleeve is exerted pressure, be passed to self-locking spring 312, make it compressed, and then drive locking end 311 radially moves to declutch shift shaft 2 central axis, the size of the mutual socket part of the tail end of two locking ends 311 increases, two locking ends 311 break away from one group of locking mouth respectively, and slide up and down between three groups of locking mouths, when the axial position of two locking ends 311 equal in the locking mouth arbitrary group the time, snap in corresponding locking mouth respectively, namely realize the gear auto-lock function.
When the axial position of locking end 311 in sleeve 1 was positioned at non-locking mouth position, self-locking spring 312 was compressed; When the axial position of locking end 311 in sleeve 1 was positioned at locking mouth position, the distance that two locking ends are 311 was greater than the internal diameter of sleeve 1, and their hemispherical shell all stretches in the locking mouth.
Embodiment 2
A kind of vehicular transmission self-locking mechanism, itself and embodiment's 1 difference only is that their lockable mechanism is different, particularly:
The radially two ends of the lockable mechanism 32 of present embodiment are the hemispherical shell shape locking end 321 of inner hollow, on the center axle head difference socket connecting cylinder 33 of the nearly sleeve 1 of two locking ends 321, spacing in 321 at the two locking ends have a self-locking spring 322, when self-locking spring 322 was compressed, locking end 321 can be moved to connecting cylinder 33 directions by belled position.
The structure characteristic of the other parts of present embodiment is identical with embodiment 1.
Certainly, embodiment of the present utility model is not limited to the above embodiments, the equivalent transformation that multiple mode all can be arranged between its various structure characteristics, structure characteristic, can also adopt mode shown in Figure 4, locking end such as the concrete structure of its lockable mechanism can also be other shape of being convenient to radially slide etc.The vehicular transmission self-locking mechanism that every feature that limits by the utility model claims realizes is all thought to fall within the protection domain of the present utility model.
Claims (7)
1. vehicular transmission self-locking mechanism,
It is characterized in that:It comprises sleeve, declutch shift shaft and lockable mechanism, wherein
:
Described sleeve is embedded in the clutch housing endoporus; Sleeve wall upper edge axially spaced-apart is provided with three groups of locking mouths;
One end of declutch shift shaft props up the case of transmission endoporus, and the other end stretches in the sleeve and can move axially along the through hole of sleeve;
Lockable mechanism is positioned at sleeve and connects firmly with declutch shift shaft, and its longitudinal end corresponding to locking mouth place one side is the locking end; The locking end can be with declutch shift shaft move axially the generation radial displacement; The axial position of locking end is equal arbitrary group the time, to contact cooperation with corresponding locking mouth in the locking mouth.
2. vehicular transmission self-locking mechanism according to claim 1,
It is characterized in that:In the described locking mouth, every group of locking mouth has with respect to the central shaft of sleeve axially symmetric structure a pair of each other;
The radially two ends of lockable mechanism are the locking end, and their axial position is equal arbitrary group the time, to contact cooperation with corresponding two locking mouths respectively in the locking mouth.
3. vehicular transmission self-locking mechanism according to claim 2,
It is characterized in that:Described two locking ends are the hemispherical shell of inner hollow; Be provided with the self-locking spring that can radially stretch between the two locking ends.
4. according to each described vehicular transmission self-locking mechanism among the claim 1-3,
It is characterized in that:One group in described three groups of locking mouths is neutral locking mouth, and two groups is at retaining locking mouth in addition, two groups of both sides that lay respectively at neutral locking mouth at retaining locking mouth; The axial dimension of described neutral locking mouth is greater than the axial dimension at retaining locking mouth, and less than the radius of locking end.
5. vehicular transmission self-locking mechanism according to claim 4,
It is characterized in that:Described neutral locking mouth reaches at retaining locking mouth and is bar hole or the circular port structure that runs through sleeve wall.
6. according to each described vehicular transmission self-locking mechanism in claim 1-3 or 5,
It is characterized in that:Interference fit between described sleeve and clutch endoporus.
7. vehicular transmission self-locking mechanism according to claim 4,
It is characterized in that:Interference fit between described sleeve and clutch endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091776 CN203146797U (en) | 2013-02-28 | 2013-02-28 | Automobile differential self-locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091776 CN203146797U (en) | 2013-02-28 | 2013-02-28 | Automobile differential self-locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146797U true CN203146797U (en) | 2013-08-21 |
Family
ID=48974322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320091776 Expired - Fee Related CN203146797U (en) | 2013-02-28 | 2013-02-28 | Automobile differential self-locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233851A (en) * | 2021-12-16 | 2022-03-25 | 珠海格力电器股份有限公司 | Gear locking assembly, gear locking mechanism and gearbox |
-
2013
- 2013-02-28 CN CN 201320091776 patent/CN203146797U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233851A (en) * | 2021-12-16 | 2022-03-25 | 珠海格力电器股份有限公司 | Gear locking assembly, gear locking mechanism and gearbox |
| CN114233851B (en) * | 2021-12-16 | 2022-11-15 | 珠海格力电器股份有限公司 | Gear locking assembly, gear locking mechanism and gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130821 Termination date: 20210228 |