CN202901259U - Shifting fork shaft of automobile gearbox - Google Patents
Shifting fork shaft of automobile gearbox Download PDFInfo
- Publication number
- CN202901259U CN202901259U CN 201220566169 CN201220566169U CN202901259U CN 202901259 U CN202901259 U CN 202901259U CN 201220566169 CN201220566169 CN 201220566169 CN 201220566169 U CN201220566169 U CN 201220566169U CN 202901259 U CN202901259 U CN 202901259U
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- CN
- China
- Prior art keywords
- rod
- shifting fork
- shifting
- fork shaft
- gear
- 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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Abstract
The utility model provides a shifting fork shaft of an automobile gearbox, and belongs to the technical field of vehicles. The shifting fork shaft solves the problem that due to the fact that pushing force of axial movement of an existing shifting fork shaft under a liquid surface is large, when the pushing force is transferred to a shifting handle, shifting force of a gear controlled by the shifting fork shaft under an oil surface is increased, and a shifting hand feeling is uncomfortable for a driver. The shifting fork shaft comprises a cylindrical rod body. Two end portions of the rod body are both positioning portions capable of penetrating into a gearbox shell body. A communication channel is arranged in each positioning portion, wherein one end of each communication channel is located at an end face corresponding to the rod body, and the other end of each communication channel extends out of the corresponding positioning portion and is located on a side face of the rod body. Addition of the communication channel cannot influence normal functions of the shifting fork shaft, meanwhile the shifting force of the gear controlled by the shifting fork shaft under an oil surface is effectively decreased, the driver can have a comfortable shifting hand feeling, and shifting is comfortable.
Description
Technical field
The utility model belongs to the vehicle technology field, relates to a kind of automotive transmission, particularly a kind of gear-shift shifting fork for automobile speed changer axle.
Background technique
Automobile refers to have self equips power-actuated vehicle.Speed changer is the gear drive that can fix or divide gear change output shaft and input shaft velocity ratio.Speed changer is one of topmost parts in the automotive transmission.
Mainly drive declutch shift shaft by gearshift during shift of transmission, declutch shift shaft drives shift fork and synchronizer, makes synchronizer as the bridge of input end and output terminal, thereby realizes shift of transmission.As shown in Figure 3, selector fork axle 5 is that be fixed on the case of transmission 3 can a straight-line axle, relies on the linear bearing capable of reducing friction resistance between selector fork axle 5 and the case of transmission 3.Between the both ends of the surface of the selector fork axle 5 below the transmission oil liquid level and housing 3, all can form an oil closed cavity 4, when 5 motions of selector fork axle realize gearshift, fluid can only flow through from tiny gap between selector fork axle 5 and the linear bearing, and such two oil closed cavities 4 can give the selector fork axle 5 under fluid certain resistance.Thereby the axial motion thrust of selector fork axle 5 under the increase liquid level, when this thrust is transformed into shift handle, increase oil level set aside gear that fork shaft is controlled gear shifting force, can allow the driver experience less than comfortable gearshift feel.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of gear-shift shifting fork for automobile speed changer axle, utilizes the selector fork axle can reduce the gear shifting force of selector fork gear that axle is controlled under the liquid level.
The purpose of this utility model can realize by following technical proposal: a kind of gear-shift shifting fork for automobile speed changer axle, comprise a cylindrical body of rod, and the two end part of the body of rod are the positioning part that can penetrate in the case of transmission; It is characterized in that, be equipped with a communicating passage on the positioning part of the described body of rod, an end of described communicating passage is positioned on the corresponding end face of the body of rod, and the other end of communicating passage extends the positioning part and is positioned on the side of the body of rod.
Communicating passage makes oil closed cavity and the case of transmission intracavity inter-connection that forms between selector fork axle under the oil level and the housing.Selector fork axle to-and-fro motion when gearshift, pressure in the oil closed cavity changes, rapidly drain into transmission case intracoelomic cavity in by communicating passage the lubricant oil in the oil closed cavity or suck rapidly the lubricant oil in the transmission case intracoelomic cavity in the oil closed cavity, and then reduced the resistance of fluid to selector fork, allow the driver can experience good gearshift feel, make gearshift more comfortable.
In above-mentioned gear-shift shifting fork for automobile speed changer axle, described communicating passage comprises the center hole that is positioned at place, body of rod axle center and the radial hole that is positioned on the body of rod radial line, one end of described center hole is positioned on the end face of the body of rod, the other end of described center hole extends the positioning part and is connected with an end of radial hole, and the other end of described radial hole is positioned on the side of the body of rod.
In above-mentioned gear-shift shifting fork for automobile speed changer axle, the diameter of described center hole and radial hole is 3～8 ㎜.The moment flow that the peak rate of flow that communicating passage can be passed through produces greater than selector fork axle extruding space.
In above-mentioned gear-shift shifting fork for automobile speed changer axle, described communicating passage is a through hole that is obliquely installed with respect to body of rod shaft axis.
In above-mentioned gear-shift shifting fork for automobile speed changer axle, the diameter of described through hole is 3～8 ㎜.
In above-mentioned gear-shift shifting fork for automobile speed changer axle, described communicating passage is one to be positioned on the body of rod side strip groove that axially arranges along the body of rod.
Compared with prior art, this gear-shift shifting fork for automobile speed changer axle only can not affect its normal function by setting up communicating passage, also effectively reduces simultaneously the gear shifting force of selector fork gear that axle is controlled under the liquid level; Allow the driver can experience good gearshift feel, make gearshift more comfortable.The communicating passage of this gear-shift shifting fork for automobile speed changer axle has advantages of easy to process.
Description of drawings
Fig. 1 is this gear-shift shifting fork for automobile speed changer axle embodiment one structural representation.
Fig. 2 is this gear-shift shifting fork for automobile speed changer axle embodiment two structural representation.
Fig. 3 is this gear-shift shifting fork for automobile speed changer axle embodiment three structural representation.
Fig. 4 is the use status architecture schematic diagram of this gear-shift shifting fork for automobile speed changer axle.
Fig. 5 is the prior art structural representation of this gear-shift shifting fork for automobile speed changer axle.
Among the figure, 1, the body of rod; 2, communicating passage; 21, center hole; 22, radial hole; 23, through hole; 24, strip groove; 3, housing; 4, oil closed cavity; 5, selector fork axle.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this gear-shift shifting fork for automobile speed changer axle comprises a cylindrical body of rod 1, and the two end part of the body of rod 1 are the positioning part that can penetrate in the case of transmission 3; Be equipped with a communicating passage 2 on the positioning part of the body of rod 1, an end of communicating passage 2 is positioned on the corresponding end face of the body of rod 1, and the other end of communicating passage 2 extends the positioning part and is positioned on the side of the body of rod 1.
Specifically, communicating passage 2 comprises the center hole 21 that is positioned at place, the body of rod 1 axle center and the radial hole 22 that is positioned on the body of rod 1 radial line, one end of center hole 21 is positioned on the end face of the body of rod 1, the other end of center hole 21 extends the positioning part and is connected with an end of radial hole 22, and the other end of radial hole 22 is positioned on the side of the body of rod 1.The diameter of center hole 21 and radial hole 22 is 3～8 ㎜; Can select any numerical value according to actual conditions.
As shown in Figure 4, the positioning part of the body of rod 1 penetrates the interior oil closed cavity 4 that forms of positioning hole of case of transmission 3, and communicating passage 2 is with oil closed cavity 4 and case of transmission 3 intracavity inter-connections.Selector fork axle to-and-fro motion when gearshift, pressure in the oil closed cavity 4 changes, and the lubricant oil in the oil closed cavity 4 is drained in case of transmission 3 inner chambers or with the lubricant oil in case of transmission 3 inner chambers rapidly by communicating passage 2 suck rapidly in the oil closed cavity 4.
Embodiment two
The present embodiment is basic identical with embodiment one structure and principle, and different place is: as shown in Figure 2, communicating passage 2 is a through hole 23 that is obliquely installed with respect to the body of rod 1 shaft axis.The diameter of through hole 23 is 3～8 ㎜.
Embodiment three
The present embodiment is basic identical with embodiment one structure and principle, and different place is: as shown in Figure 3, communicating passage 2 is one to be positioned on the body of rod 1 side strip groove 24 that axially arranges along the body of rod 1.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the body of rod 1; Communicating passage 2; Center hole 21; Radial hole 22; Through hole 23; Strip groove 24; Housing 3; Oil closed cavity 4; The terms such as selector fork axle, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (6)
1. a gear-shift shifting fork for automobile speed changer axle comprises a cylindrical body of rod (1), and the two end part of the body of rod (1) are the positioning part that can penetrate in the case of transmission (3); It is characterized in that, be equipped with a communicating passage (2) on the positioning part of the described body of rod (1), one end of described communicating passage (2) is positioned on the corresponding end face of the body of rod (1), and the other end of communicating passage (2) extends the positioning part and is positioned on the side of the body of rod (1).
2. gear-shift shifting fork for automobile speed changer axle according to claim 1, it is characterized in that, described communicating passage (2) comprises the center hole (21) that is positioned at the body of rod (1) axle center place and is positioned at radial hole (22) on the body of rod (1) radial line, one end of described center hole (21) is positioned on the end face of the body of rod (1), the other end of described center hole (21) extends the positioning part and is connected with an end of radial hole (22), and the other end of described radial hole (22) is positioned on the side of the body of rod (1).
3. gear-shift shifting fork for automobile speed changer axle according to claim 2 is characterized in that, the diameter of described center hole (21) and radial hole (22) is 3～8 ㎜.
4. gear-shift shifting fork for automobile speed changer axle according to claim 1 is characterized in that, described communicating passage (2) is a through hole (23) that is obliquely installed with respect to the body of rod (1) shaft axis.
5. gear-shift shifting fork for automobile speed changer axle according to claim 4 is characterized in that, the diameter of described through hole (23) is 3～8 ㎜.
6. gear-shift shifting fork for automobile speed changer axle according to claim 1 is characterized in that, described communicating passage (2) is one to be positioned on the body of rod (1) side strip groove (24) that axially arranges along the body of rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566169 CN202901259U (en) | 2012-10-31 | 2012-10-31 | Shifting fork shaft of automobile gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566169 CN202901259U (en) | 2012-10-31 | 2012-10-31 | Shifting fork shaft of automobile gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901259U true CN202901259U (en) | 2013-04-24 |
Family
ID=48121930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220566169 Expired - Fee Related CN202901259U (en) | 2012-10-31 | 2012-10-31 | Shifting fork shaft of automobile gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901259U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110582660A (en) * | 2017-05-04 | 2019-12-17 | 舍弗勒技术股份两合公司 | Apparatus and method for automatic steering |
-
2012
- 2012-10-31 CN CN 201220566169 patent/CN202901259U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110582660A (en) * | 2017-05-04 | 2019-12-17 | 舍弗勒技术股份两合公司 | Apparatus and method for automatic steering |
| CN110582660B (en) * | 2017-05-04 | 2023-03-07 | 舍弗勒技术股份两合公司 | Apparatus and method for automatic steering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20131031 |