CN204253840U - Transfer case gearshift - Google Patents
Transfer case gearshift Download PDFInfo
- Publication number
- CN204253840U CN204253840U CN201420682498.XU CN201420682498U CN204253840U CN 204253840 U CN204253840 U CN 204253840U CN 201420682498 U CN201420682498 U CN 201420682498U CN 204253840 U CN204253840 U CN 204253840U
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- China
- Prior art keywords
- shift fork
- bearing pin
- transfer case
- cam
- mounting hole
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Abstract
The utility model discloses a kind of transfer case gearshift, comprise frame, shift fork, shifting shaft, bearing pin and the fixing frame with bar hole, fixing frame is connected in frame, shift fork is provided with mounting hole, and shifting shaft is driven by motor, and shifting shaft is provided with the cam body of cylindrical shape, cam body is provided with spiral helicine cam path along its circumference, bearing pin is through the bar hole on fixing frame, and one end and the cam path of bearing pin offset, and the other end inserts in the mounting hole on shift fork.The utility model adopts cam to shift gears, and gear and two shift forks of third gear (except the neutral) correspondence of transfer case all can be arranged on a transmission shaft, and moving up and down in cam path by bearing pin realizes the switching of shift fork and the movement of shift fork.When shifting gears, be driven by motor because of what adopt, the angle by adjustment cam body realizes gearshift, can adopt the form of button, make the operation of gearshift more for convenience.Cam path farthest make use of the wire diameter of cam body.
Description
Technical field
The utility model belongs to the technical field of transmission device.
Background technique
On how shaft-driven automobile, in order to the power distribution exported by speed changer is to each ransaxle, generally transfer case is housed.Transfer case has 2H, 4H, N, 4L tetra-gears, and 2H is high speed two-wheel drive, and 4H is high speed four-wheel drive, and 4L is low speed four-wheel drive, and N is neutral.
Existing transfer case gearshift is similar to the gearshift of retarder, needs shake shifting shaft to realize gearshift with the shift fork be switched on transmission shaft, a transmission shaft is only arranged a shift fork.A shift fork can realize the switching of two gears.When gear is more than two, just need at least two transmission shafts.
Can find out, as transfer case adopts said structure, just need at least two transmission shafts, the structure of gearshift can be made so compact not, and adopt the mode of shake shifting shaft to shift gears, such operation is more inconvenient.
Model utility content
The utility model provides a kind of transfer case gearshift, to solve the problem that existing transfer case gearshift needs many transmission shafts to realize to shift gears.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme: a kind of transfer case gearshift, comprise frame, shift fork, shifting shaft, bearing pin and the fixing frame with bar hole, fixing frame is connected in frame, shift fork is provided with mounting hole, shifting shaft is driven by motor, shifting shaft is provided with the cam body of cylindrical shape, cam body is provided with spiral helicine cam path along its circumference, bearing pin is through the bar hole on fixing frame, one end and the cam path of bearing pin offset, the other end inserts in the mounting hole on shift fork, on shift fork, the size of mounting hole is mated with the size of the other end of bearing pin.
Principle of the present utility model is: motor drives shifting shaft to rotate, and cam body also can rotate thereupon.One end and the cam path of bearing pin offset, and bearing pin under the effect of cam path, can move up and down.When bearing pin moves up and down, the mounting hole inserting and release shift fork can be realized.Move left and right when bearing pin inserts after mounting hole, the switching of shift fork and different gear can be realized.
Compared with prior art, the utility model has the advantage of: 1, adopt cam to shift gears, gear and two shift forks of third gear (except the neutral) correspondence of transfer case all can be arranged on a transmission shaft, and moving up and down in cam path by bearing pin realizes the switching of shift fork and the movement of shift fork.2, when shifting gears, be driven by motor because of what adopt, the angle by adjustment cam body realizes gearshift, therefore need not adopt the form of shake gear level, and can adopt the form of button, makes the operation of gearshift more for convenience.3, cam path is arranged along the circumferential spiral of cam body, farthest make use of the wire diameter of cam body.
Further, also comprise Locating extension spring, one end of described Locating extension spring is connected on shift fork, and the other end is connected on fixing frame.When bearing pin does not contact with shift fork, shift fork is in a fixed position, when bearing pin contacts with above-mentioned shift fork again, contacts in fixed position with shift fork, ensure that the stability of transmission.
Further, the inwall of bar hole is provided with roller, makes to be rolling friction between bearing pin and the inwall of bar hole, instead of sliding friction, and sliding friction comparatively sliding friction is compared, and frictional force is less, and bearing pin is not easy to wear.
Further, in the mounting hole of shift fork, be provided with spring sheet, make to be held out against by spring sheet between mounting hole and bearing pin, prevent bearing pin from rocking in mounting hole.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the structural representation of the utility model transfer case gearshift embodiment.
Fig. 2 is the structural representation of the utility model transfer case gearshift fixing frame embodiment.
Embodiment
Reference character in Figure of description comprises: shift fork 1, shifting shaft 2, bearing pin 3, retaining spring 4, bar hole 5, fixing frame 6, cam path 7, cam body 8.
As shown in Figure 1, a kind of transfer case gearshift in the present embodiment, comprises frame, shift fork 1, shifting shaft 2, bearing pin 3, retaining spring 4 and the fixing frame 6 with bar hole 5.Fixing frame 6 is connected in frame, and shift fork 1 is provided with mounting hole, and shifting shaft 2 is driven by motor.Shifting shaft 2 is provided with the cam body 8 of cylindrical shape, and cam body 8 is provided with spiral helicine cam path 7 along its circumference.As shown in Figure 2, bearing pin 3 is through the bar hole 5 on fixing frame 6, and the inwall of bar hole 5 is provided with roller.One end and the cam path 7 of bearing pin 3 offset, and the other end inserts in the mounting hole on shift fork 1, and on shift fork 1, the size of mounting hole is mated with the size of the other end of bearing pin 3, is provided with spring sheet in the mounting hole of shift fork 1.One end of Locating extension spring is connected on shift fork 1, and the other end is connected on fixing frame 6, and shift fork 1 is positioned at the midpoint between two gears by retaining spring 4.
From left to right being followed successively by the gear of 2H, 4H, 4L tri-gears in the present embodiment, is N shelves when bearing pin 3 does not insert the mounting hole of shift fork 1.
During original state, bearing pin 3 is in the low order end in bar hole 5, when needing it to proceed to 4L, rotating cam body 8, makes bearing pin 3 under the drive of cam, move to the mid point (fixed position) come between 4H and 4L gear, bearing pin 3 upwards pushes up again, and make bearing pin 3 insert in the mounting hole of this shift fork 1, at this moment bearing pin 3 moves right again, shift fork 1 is moved right, thus shift fork 1 is pushed up mutually with the gear of 4L gear.
When needs change to 4H shelves, bearing pin 3 moves down, and exits the mounting hole of this shift fork 1, mid point (fixed position) place that this shift fork 1 can be got back between 4H and 4L gear under the effect of retaining spring 4.Bearing pin 3 can continue to be moved to the left, and when moving to the below of another shift fork 1, upwards pushes up, and inserts in the mounting hole of shift fork 1, then moves right, shift fork 1 is moved right, thus shift fork 1 is pushed up mutually with the gear of 4H gear.
Roller on the inwall of bar hole 5 is rolling friction between the inwall of bearing pin 3 and bar hole 5, instead of sliding friction, and sliding friction comparatively sliding friction is compared, and frictional force is less, and bearing pin 3 is not easy to wear, the longer service life of bearing pin 3.
Be provided with spring sheet in the mounting hole of shift fork 1, make to be held out against by spring sheet between mounting hole and bearing pin 3, prevent bearing pin 3 from rocking in mounting hole, affect the stationarity of transmission.
For a person skilled in the art; under the prerequisite not departing from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. a transfer case gearshift, comprise frame, shift fork and shifting shaft, it is characterized in that: also comprise bearing pin and the fixing frame with bar hole, fixing frame is connected in frame, shift fork is provided with mounting hole, shifting shaft is driven by motor, shifting shaft is provided with the cam body of cylindrical shape, cam body is provided with spiral helicine cam path along its circumference, bearing pin is through the bar hole on fixing frame, one end and the cam path of bearing pin offset, and the other end inserts in the mounting hole on shift fork, and on shift fork, the size of mounting hole is mated with the size of the other end of bearing pin.
2. transfer case gearshift as claimed in claim 1, it is characterized in that: also comprise Locating extension spring, one end of described Locating extension spring is connected on shift fork, and the other end is connected on fixing frame.
3. transfer case gearshift as claimed in claim 2, is characterized in that: the inwall of bar hole is provided with roller.
4. transfer case gearshift as claimed in claim 3, is characterized in that: be provided with spring sheet in the mounting hole of shift fork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682498.XU CN204253840U (en) | 2014-11-16 | 2014-11-16 | Transfer case gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682498.XU CN204253840U (en) | 2014-11-16 | 2014-11-16 | Transfer case gearshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253840U true CN204253840U (en) | 2015-04-08 |
Family
ID=52958149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420682498.XU Active CN204253840U (en) | 2014-11-16 | 2014-11-16 | Transfer case gearshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253840U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742737A (en) * | 2015-04-17 | 2015-07-01 | 北京汽车研究总院有限公司 | Gear-shifting operation mechanism of power divider and automobile |
| CN111587138A (en) * | 2018-01-11 | 2020-08-25 | 乐高公司 | Toy gear box |
| CN111761084A (en) * | 2020-04-26 | 2020-10-13 | 上海工程技术大学 | Eccentric wheel vibration drilling machine |
| CN114127448A (en) * | 2019-07-22 | 2022-03-01 | 株式会社电装 | Position switching device |
-
2014
- 2014-11-16 CN CN201420682498.XU patent/CN204253840U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742737A (en) * | 2015-04-17 | 2015-07-01 | 北京汽车研究总院有限公司 | Gear-shifting operation mechanism of power divider and automobile |
| CN104742737B (en) * | 2015-04-17 | 2017-07-18 | 北京汽车研究总院有限公司 | A kind of transfer gear shift control mechanism and automobile |
| CN111587138A (en) * | 2018-01-11 | 2020-08-25 | 乐高公司 | Toy gear box |
| CN111587138B (en) * | 2018-01-11 | 2022-01-11 | 乐高公司 | Toy gear box |
| CN114127448A (en) * | 2019-07-22 | 2022-03-01 | 株式会社电装 | Position switching device |
| CN111761084A (en) * | 2020-04-26 | 2020-10-13 | 上海工程技术大学 | Eccentric wheel vibration drilling machine |
| CN111761084B (en) * | 2020-04-26 | 2021-08-06 | 上海工程技术大学 | Eccentric wheel vibration drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 402760 No.100, Jianshan Road, Biquan street, Bishan District, Chongqing Patentee after: Landai Technology Group Co.,Ltd. Address before: 402760 No.100, Jianshan Road, Biquan street, Bishan District, Chongqing Patentee before: CHONGQING LANDAI POWERTRAIN Corp.,Ltd. |