CN203098825U - Gear selecting cylinder and pneumatic gear selecting actuating mechanism - Google Patents
Gear selecting cylinder and pneumatic gear selecting actuating mechanism Download PDFInfo
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- CN203098825U CN203098825U CN 201320096943 CN201320096943U CN203098825U CN 203098825 U CN203098825 U CN 203098825U CN 201320096943 CN201320096943 CN 201320096943 CN 201320096943 U CN201320096943 U CN 201320096943U CN 203098825 U CN203098825 U CN 203098825U
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- block
- block selecting
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- piston rod
- selecting
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Abstract
The utility model discloses a gear selecting cylinder which is used for gear selecting of automobiles. The gear selecting cylinder comprises a cylinder body (6) and a piston rod (4), wherein one end of the piston rod (4) is placed inside the cylinder body (6), and the piston rod moves in the axial direction of the cylinder body. The gear selecting cylinder further comprises a gear selecting piece which is matched with the piston rod (4) to achieve gear selecting. The gear selecting piece comprises a first gear selecting sliding block (2) which is arranged at the end, placed inside the cylinder body (6), of the piston rod, the piston rod (4) penetrates through the first gear selecting sliding block (2), and the piston rod (4) is connected with the first gear selecting sliding block (2) in a sliding mode. The precision of the gear selecting position of the gear selecting gear is high, the gear selecting cylinder can be used in the field of automobiles with high gear selecting precision, the size of a gear selecting device of automobiles in the prior art can be better reduced, the requirement for entire automobile design is met, the gear selecting cylinder can reduce impacting of a gear box, and therefore the power performance and the economical efficiency of the automobiles can be improved. The utility model further discloses a pneumatic gear selecting actuating mechanism.
Description
Technical field
The utility model relates to the vehicle technology field, particularly a kind of block selecting cylinder.In addition, the utility model also relates to the pneumatic block selecting actuator that comprises above-mentioned block selecting cylinder.
Background technique
The research of actuator and exploitation are electrical control automatic manual transmission case (AutomatedMechanical Transmission, abbreviation AMT) one of key content in the system, the performance of shift-selecting and changing actuating mechanism directly influences the performance of whole AMT system, must guarantee that its speed of response is fast, accurate positioning, working stability be reliable.
Pneumatic actuator has characteristics such as the economy of use, environmental protection, and, generally having ready-made gas holder on the commercial car, pneumatic power can directly be provided by this gas holder, does not need extra motor, oil pump equal energy source device, so be widely used in the AMT system.
Pneumatic actuator comprises the control valve of choosing ventilation cylinder, the action of control block selecting cylinder, wherein, the block selecting cylinder is one of vitals in the pneumatic actuator, the controller of pneumatic actuator is mainly controlled the vehicle block selecting according to the block selecting position signal of block selecting cylinder, to reach the needs of vehicle driving.Four position cylinder that typical application is used in the prior art have below been provided on industrial production.
Please refer to Fig. 1, the four position block selecting cylinders that Fig. 1 uses on industrial production for typical application in the prior art.
Block selecting cylinder of the prior art comprises cylinder block 1 ', be arranged at the piston rod 2 ' and the block selecting part of cylinder block inside, the block selecting part comprises the left back-up ring 3 ' that floats as shown in Figure 1, right back-up ring 4 ', cylinder inner wall is respectively arranged with spring 5 ' along its axial two ends, a left side, right back-up ring connects described cylinder two ends inwall by spring 5 ', also offer the required gas channel of block selecting on the cylinder wall, provided cylinder among Fig. 1 with four gas channels, pneumatic actuator is by four gas channels 6 ' of control, 7 ', 8 ', 9 ' advance, go out gaseity, realize moving of piston rod 2 ', when piston rod 2 ' moves to A ', B ', C ', during D ' position, automobile is finished choosing of corresponding gear respectively.
Because of block selecting inner structure of air cylinder more complicated in the prior art, actuator's more complicated of work matches with above-mentioned block selecting cylinder, volume is also bigger, and Location accuracy is lower, so only be mainly used in industrial field at present, be not suitable for travelling comfort is required than on the higher commercial style vehicle, and be unfavorable for realizing the automatic control of vehicle.
In view of this, how block selecting cylinder of the prior art being improved, improve the accuracy of block selecting cylinder block selecting position, enlarge its application, is the problem that those skilled in the art need solution badly.
The model utility content
The technical problems to be solved in the utility model is for providing a kind of block selecting cylinder, and the accuracy of this block selecting cylinder block selecting position is than higher, but application is wider, helps realizing the automation control of vehicle, can improve the vehicle performance design.In addition, another technical problem that will solve of the utility model is for providing a kind of pneumatic block selecting actuator.
For solving the problems of the technologies described above, the utility model provides a kind of block selecting cylinder, be used for the vehicle block selecting, comprise that a cylinder block and an end place described cylinder block inner and along the piston rod of its axial motion, also comprise and cooperate the block selecting part of realizing block selecting with described piston rod, described block selecting part comprises the first block selecting slide block, the described first block selecting slide block is arranged at described piston rod and places on the interior end of described cylinder block, described piston rod runs through the described first block selecting slide block, and is slidingly connected with the described first block selecting slide block.
Preferably, also comprise the detection part of the block selecting position of detecting described piston rod, described detection part is arranged at described piston rod and places on the interior end of described cylinder block.
Preferably, described detection part is a hall position sensor.
Preferably, the described first block selecting slide block comprises cylindrical shell and is arranged at piston on the outer circumferential face of described cylindrical shell that the inwall of described piston and described cylinder block is slidingly connected.
Preferably, described block selecting part also comprises the second block selecting slide block that is arranged in the described cylinder block, the described first block selecting slide block and the second block selecting slide block branch occupy the both sides of described piston rod upper piston, be provided with first gas channel, second gas channel, the 3rd gas channel, the 4th gas channel on the casing wall of described cylinder block successively, and each gas channel is communicated with first cavity, second cavity, the 3rd cavity, the 4th cavity that described piston rod, described piston, described cylinder block and each block selecting slide block surround respectively.
Preferably, the inwall cooperation position of the described first block selecting slide block, the second block selecting slide block and described piston rod and described cylinder block is provided with Y type sealed member.
The block selecting cylinder that the utility model provides, be used for the vehicle shifting, comprise that a cylinder block and an end place described cylinder block inner and along the piston rod of its axial motion, also comprise and cooperate the block selecting part of realizing block selecting with described piston rod, described block selecting part comprises the first block selecting slide block, the described first block selecting slide block is arranged at described piston rod and places on the interior end of described cylinder block, and described piston rod runs through the described first block selecting slide block, and is slidingly connected with the described first block selecting slide block.
Piston rod runs through its first block selecting slide block that places the end in the cylinder block in the block selecting cylinder of the present utility model, after the first block selecting slide block arrives the block selecting position, piston rod can continue the relative first block selecting slide block and move right, so that finishing the choosing of other gears changes, this is provided with to be beneficial on the block selecting cylinder detection part is set, can be by detecting the operating position of piston rod in real time, realize different block selecting positions, improve the accuracy of block selecting cylinder block selecting position, enlarge its application, can be applied to the automotive field higher to the block selecting ratio of precision, help reducing in the prior art volume of block selecting device on the automobile, satisfy the car load designing requirement, and this block selecting cylinder the impact of gearbox be can reduce, and then the power character and the Economy of vehicle improved.
In addition, the utility model also provides a kind of pneumatic block selecting actuator, and the air vent channel working state control valve that comprises the block selecting cylinder and control described block selecting cylinder, described block selecting cylinder are above-mentioned each described block selecting cylinder.
Preferably, described block selecting cylinder also comprises the second block selecting slide block that is arranged in the described cylinder block, the described first block selecting slide block and the second block selecting slide block branch occupy the both sides of described piston rod upper piston, the casing wall of described cylinder block is provided with first gas channel, second gas channel, the 3rd gas channel, the 4th gas channel, above-mentioned four-way is communicated with described piston rod respectively, described piston, first cavity that described cylinder block and each block selecting slide block surround, second cavity, the 3rd cavity, the 4th cavity, the working state of each described gas channel is by corresponding described control valve control.
Preferably, described block selecting cylinder also comprises the second block selecting slide block that is arranged in the described cylinder block, the described first block selecting slide block and the second block selecting slide block branch occupy the both sides of described piston rod upper piston, the casing wall of described cylinder block is provided with first gas channel, second gas channel, the 3rd gas channel, the 4th gas channel, above-mentioned four-way is communicated with described piston rod respectively, described piston, first cavity that described cylinder block and each block selecting slide block surround, second cavity, the 3rd cavity, the 4th cavity, wherein the working state of three gas channels is by corresponding described control valve control, and another gas channel is communicated with atmosphere.
Preferably, also comprise transmission system, described block selecting cylinder is provided with the detection part that detects the block selecting position, and described detection part is electrically connected the controller of described transmission system, and the controller of described transmission system is judged the position of described block selecting cylinder by the testing signal of described detection part.
Because of having used block selecting cylinder in this pneumatic block selecting mechanism,, do not repeat them here so the technique effect of the technique effect of this pneumatic block selecting mechanism and above-mentioned block selecting cylinder is basic identical with above-mentioned technique effect.
Description of drawings
The four position cylinder schematic representation that Fig. 1 uses on industrial production for typical application in the utility model prior art;
Fig. 2 is the structural representation of block selecting cylinder among first kind of embodiment of the utility model;
Fig. 3 is the fundamental diagram of four position cylinder in a kind of specific embodiment;
Table 1 is the working state of each gas channel of block selecting cylinder in first kind of embodiment;
Table 2 is the working state of each gas channel of block selecting cylinder in second kind of embodiment;
Table 3 is the working state of each gas channel of block selecting cylinder in the third embodiment.
Wherein, the corresponding relation between reference character and the component names is among Fig. 1:
1 ' cylinder block, 2 ' piston rod, 3 ' left back-up ring, 4 ' right back-up ring, 5 ' spring, 6 ', 7 ', 8 ', 9 ' gas channel.
Wherein, the corresponding relation between reference character and the component names is among Fig. 2 and Fig. 3:
1 hall position sensor, 2 first block selecting slide blocks, 3 first gas channels, 4 piston rods, 5 second gas channels, 6 cylinder block, 7 the 3rd gas channels, 8 the 4th air vent channels, 9 pistons, 10 second block selecting slide blocks.
Embodiment
Core of the present utility model is for providing a kind of block selecting cylinder, and the accuracy of this block selecting cylinder block selecting position is than higher, but application is wider, helps realizing the automation control of vehicle, can improve the vehicle performance design.In addition, another core of the utility model is for providing a kind of pneumatic block selecting actuator.
Be without loss of generality, this paper is applied as example with the block selecting cylinder on six gear hybrid vehicle, introduce technological scheme, and the block selecting cylinder that provided of this paper can also be applied on other vehicles certainly; In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 2 is the structural representation of block selecting cylinder among first kind of embodiment of the utility model.
The block selecting cylinder that the utility model provides, be used for the vehicle shifting, comprise that the cylinder block 6 that is provided with isometrical endoporus not and an end place described cylinder block 6 and along the piston rod 4 of its axial motion, isometrical endoporus is not provided with quantity and can determines according to the gear number of actual demand in the vehicle, be example with vehicle herein, introduce the concrete structure design of block selecting cylinder with seven gears (one of them gear is for reversing gear).
The block selecting cylinder also comprises and cooperates the block selecting part of realizing block selecting with piston rod 4, the block selecting part comprises the first block selecting slide block 2, the described first block selecting slide block 2 is arranged at piston rod 4 and places on the end in the described cylinder block 6, and piston rod 4 runs through the first block selecting slide block 2, and is slidingly connected with the first block selecting slide block 2.
Piston rod 4 runs through its first block selecting slide block 2 that places the end in the cylinder block in the block selecting cylinder of the present utility model, after the first block selecting slide block 2 arrives the block selecting position, piston rod 4 can continue the relative first block selecting slide block 2 and move right, so that finishing the choosing of other gears changes, this is provided with to be beneficial on the block selecting cylinder detection part is set, can be by detecting the operating position of piston rod in real time, realize different block selecting positions, improve the accuracy of block selecting cylinder block selecting position, enlarge its application, can be applied to the automotive field higher to the block selecting ratio of precision, help reducing in the prior art volume of block selecting device on the automobile, satisfy the car load designing requirement, and this block selecting cylinder the impact of gearbox be can reduce, and then the power character and the Economy of vehicle improved.
Particularly, detection part can be the higher hall position sensor 1 of displacement detecting ratio of precision, can be by detecting the operating position of piston rod 4 in real time, realize the different block selecting position of automobile, help improving the accuracy of block selecting position, reduce the impact of gearbox, realize the automation control of vehicle, and then improved the power character and the Economy of vehicle.
In a kind of embodiment, detection part can be arranged at piston rod 4 and place on the end in the cylinder block 6, and this set-up mode is fairly simple, and it is more accurate to detect the moving displacement of piston rod 4, can improve the precision of automatic control.
The first block selecting slide block 2 in the various embodiments described above can comprise cylindrical shell and be arranged at piston on the outer circumferential face of cylindrical shell that the inwall of piston and cylinder block is slidingly connected; The first block selecting slide block 2 of this structure is relatively simple for structure, uses material fewer, can alleviate the weight of block selecting cylinder, helps the global design of car load.
In a kind of specific embodiment, the block selecting cylinder can also comprise the second block selecting slide block 10 that is arranged at the other end in the cylinder block, the piston 9 and cylinder 6 bodies that are provided with on the described piston rod 4 are slidingly connected, the casing wall of cylinder block 6 is provided with first gas channel 3, second gas channel 5, the 3rd gas channel 7, the 4th gas channel 8, and above-mentioned four-way is communicated with first cavity, second cavity, the 3rd cavity, the 4th cavity that piston rod 4, cylinder block 6 and each block selecting slide block surround respectively; Above-mentioned each cavity seals each other.The block selecting cylinder of this structure can satisfy 6 retainings, 12 demands for control of keeping off a car, and structure is compact, introduces several these block selecting cylinders are realized block selecting in block selecting actuator control mode below.
Certainly, in order to increase the seal between each isolated cavity in the block selecting cylinder, the inwall cooperation position of the first block selecting slide block 2, the second block selecting slide block 10 and piston rod and gas can be provided with sealed member, the sealing parts can be the reasonable Y type of sealability sealed member.
Please refer to Fig. 3 and table 1, Fig. 3 is the fundamental diagram of four position cylinder in a kind of specific embodiment; Table 1 is the working state of each gas channel of block selecting cylinder in first kind of embodiment.Concrete working principle is as described below.
Vehicle have seven gears (six forward gears and one are reversed gear, be labeled as respectively 1,2,3,4,5,6 and R) and four neutral positions.
In first kind of specific embodiment, when vehicle need change between 5 retainings and 6 retainings during neutral gear position, if 7 air inlets of control the 3rd gas channel, the exhaust of remaining gas passage, piston rod 4
Table 1
Be moved to the left the most left A position, promptly interchangeable to neutral gear position between 5 retainings and 6 retainings; If this moment, continuation is inflated in the 3rd cavity by the 3rd gas channel 7, simultaneously also in first cavity, charge into gas with the 3rd gas channel 7 uniform pressure by first gas channel 3, control second gas channel 5 and 8 exhausts of the 4th gas channel, because the internal diameter of first cavity block selecting cylinder of living in is bigger, the first block selecting slide block 2 and piston rod 4 will move right together, move to the precalculated position with stop motion until the first block selecting slide block 2, please refer to Fig. 3, the first block selecting slide block 2 moves to the step place of two Different Diameter endoporus with stop motion among Fig. 3, piston rod 4 moves right continuing under effect of inertia, this moment the first cavity side piston rod 4 the stressed area that only depends on piston rod 4, the lifting surface area in left side in sectional area by appropriate design piston rod 4 and the 3rd cavity, piston rod 4 is with stop motion in place, piston rod 4 arrives the B positions at this moment, just the neutral gear position between 3 retainings and 4 retainings.
Control the gas that first gas channel 3 and the 4th gas channel 8 feed uniform pressure, when second gas channel, 5 logical atmosphere and 7 exhausts of the 3rd gas channel, piston rod 4 moves right continuing, when piston rod 4 contacts with piston 9, under the pressure of two ends gas, piston rod 4 arrives stop motion in the C position, i.e. the neutral gear position of 1 retaining and 2 retainings.Then only need each gas channel to be set to following state: 3 air inlets of first gas channel, second and third gas channel is communicated with atmosphere, 8 exhausts of the 4th gas channel.
Second cavity is communicated with atmosphere all the time by second gas channel 5 in this embodiment, and the conversion of working staties such as the turnover gas of other three gas channels can realize by control valve.
In the present embodiment in the pneumatic block selecting actuator executive component quantity fewer, user cost is lower, and control flow is simple relatively, especially this mechanism structure is fairly simple, it is smaller to take up room, and satisfies the car load design requirement.
On the basis of last first kind of mode of execution, can increase control valve the working state of second gas channel 5 is controlled, and then improve the rapidity of block selecting, below provided two kinds of embodiments, shown in being described in detail as follows.
Please refer to table 2, table 2 is the working state of each gas channel of block selecting cylinder in second kind of embodiment.
Table 2
In second kind of embodiment, when changing to neutral A, B, C position, the working state of each gas channel of block selecting cylinder is identical with working state in first kind of embodiment, difference is, when the neutral gear position that changes to the R correspondence of reversing gear, 5 air inlets of second gas channel, the 3rd gas channel 7 is communicated with atmosphere, 3 air inlets of first gas channel, 8 exhausts of the 4th gas channel.
Table 3
The third embodiment is further to improve on second kind of embodiment, has further improved the rapidity of block selecting.
Please refer to table 3, table 3 is the working state of each gas channel of block selecting cylinder in the third embodiment.
In the third embodiment, when changing to neutral A, B, D position, the working state of each gas channel of block selecting cylinder is identical with working state in second kind of embodiment, difference is, when the neutral gear position C that changes to 1 retaining and 2 retaining centres, second gas channel 5 also needs air inlet, and other gas channel working staties are constant.
Control valve in the respective embodiments described above can be solenoid valve, specifically can use two-position three way magnetic valve.
In the respective embodiments described above, pneumatic block selecting actuator also comprises can transmission system, and the detection part on the block selecting cylinder is electrically connected the controller of transmission system, and the controller of transmission system is judged the position of block selecting cylinder by the testing signal of detection part.
This set-up mode need not to increase other controlling componenies, and directly integrated on the basis of existing technology design control procedure gets final product, and user cost is fairly simple, and control is convenient.
Need to prove that left and right orientation used herein pronoun is with the relative position between each parts of block selecting cylinder definition among Fig. 2 and Fig. 3, only is simple for the description technique scheme, can not limit the protection domain of this paper.
The technique effect of above-mentioned pneumatic block selecting mechanism and the technique effect of the block selecting cylinder in above-mentioned arbitrary mode of execution are basic identical, do not repeat them here.
The otherwise data of pneumatic block selecting mechanism is same as the prior art, please refer to prior art.
More than a kind of block selecting cylinder provided by the utility model and pneumatic block selecting actuator are described in detail.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. block selecting cylinder, be used for the vehicle block selecting, comprise that a cylinder block (6) and an end place described cylinder block (6) inner and along the piston rod (4) of its axial motion, also comprise with described piston rod (4) and cooperate the block selecting part of realizing block selecting, it is characterized in that, described block selecting part comprises the first block selecting slide block (2), the described first block selecting slide block (2) is arranged at described piston rod (4) and places on the interior end of described cylinder block (6), described piston rod (4) runs through the described first block selecting slide block (2), and is slidingly connected with the described first block selecting slide block (2).
2. block selecting cylinder as claimed in claim 1 is characterized in that, also comprises the detection part of the block selecting position of detecting described piston rod (4), and described detection part is arranged at described piston rod (4) and places on the interior end of described cylinder block (6).
3. block selecting cylinder as claimed in claim 2 is characterized in that, described detection part is hall position sensor (1).
4. block selecting cylinder as claimed in claim 2 is characterized in that, the described first block selecting slide block (2) comprises cylindrical shell and be arranged at piston on the outer circumferential face of described cylindrical shell that the inwall of described piston and described cylinder block (6) is slidingly connected.
5. as each described block selecting cylinder of claim 1 to 4, it is characterized in that, described block selecting part also comprises the second block selecting slide block (10) that is arranged in the described cylinder block, the described first block selecting slide block (2) and the second block selecting slide block (10) divide the both sides that occupy described piston rod upper piston (9), be provided with first gas channel (3) on the casing wall of described cylinder block (6) successively, second gas channel (5), the 3rd gas channel (7), the 4th gas channel (8), and each gas channel is communicated with described piston rod (4) respectively, described piston (9), first cavity that described cylinder block (6) and each block selecting slide block surround, second cavity, the 3rd cavity, the 4th cavity.
6. block selecting cylinder as claimed in claim 5 is characterized in that, the described first block selecting slide block (2), the second block selecting slide block (10) and described piston (9) are provided with Y type sealed member with the inwall cooperation position of described cylinder block (6).
7. pneumatic block selecting actuator, the control valve that comprises the block selecting cylinder and control the air vent channel working state of described block selecting cylinder is characterized in that, described block selecting cylinder is aforesaid right requirement 1 a described block selecting cylinder.
8. pneumatic block selecting as claimed in claim 7 actuator, it is characterized in that, described block selecting cylinder also comprises the second block selecting slide block that is arranged in the described cylinder block, the described first block selecting slide block (2) and the second block selecting slide block (10) divide the both sides that occupy described piston rod upper piston (9), the casing wall of described cylinder block (6) is provided with first gas channel (3), second gas channel (5), the 3rd gas channel (7), the 4th gas channel (8), above-mentioned four-way is communicated with described piston rod (4) respectively, described piston (9), first cavity that described cylinder block (6) and each block selecting slide block surround, second cavity, the 3rd cavity, the 4th cavity, the working state of each described gas channel is by corresponding described control valve control.
9. pneumatic block selecting as claimed in claim 8 actuator, it is characterized in that, described block selecting cylinder also comprises the second block selecting slide block (10) that is arranged in the described cylinder block (6), the described first block selecting slide block (2) and the second block selecting slide block (10) divide the both sides that occupy described piston rod (4) upper piston (9), the casing wall of described cylinder block (6) is provided with first gas channel (3), second gas channel (5), the 3rd gas channel (7), the 4th gas channel (8), above-mentioned four-way is communicated with described piston rod (4) respectively, described piston (9), first cavity that described cylinder block (6) and each block selecting slide block surround, second cavity, the 3rd cavity, the 4th cavity, wherein the working state of three gas channels is by corresponding described control valve control, and another gas channel is communicated with atmosphere.
10. pneumatic as claimed in claim 8 or 9 block selecting actuator, it is characterized in that, also comprise transmission system, described block selecting cylinder is provided with the detection part that detects the block selecting position, described detection part is electrically connected the controller of described transmission system, and the controller of described transmission system is judged the block selecting position of described block selecting cylinder by the testing signal of described detection part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096943 CN203098825U (en) | 2013-03-04 | 2013-03-04 | Gear selecting cylinder and pneumatic gear selecting actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096943 CN203098825U (en) | 2013-03-04 | 2013-03-04 | Gear selecting cylinder and pneumatic gear selecting actuating mechanism |
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| Publication Number | Publication Date |
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| CN203098825U true CN203098825U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096943 Expired - Lifetime CN203098825U (en) | 2013-03-04 | 2013-03-04 | Gear selecting cylinder and pneumatic gear selecting actuating mechanism |
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| CN (1) | CN203098825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148204A (en) * | 2013-03-04 | 2013-06-12 | 潍柴动力股份有限公司 | Gear cylinder and pneumatic gear actuator |
| CN103671869A (en) * | 2013-12-10 | 2014-03-26 | 邢台威力汽车零部件有限公司 | Semi-automatic power-assisted speed change device of automobile |
-
2013
- 2013-03-04 CN CN 201320096943 patent/CN203098825U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148204A (en) * | 2013-03-04 | 2013-06-12 | 潍柴动力股份有限公司 | Gear cylinder and pneumatic gear actuator |
| CN103671869A (en) * | 2013-12-10 | 2014-03-26 | 邢台威力汽车零部件有限公司 | Semi-automatic power-assisted speed change device of automobile |
| CN103671869B (en) * | 2013-12-10 | 2016-04-13 | 邢台威力汽车零部件有限公司 | The semi-automatic boosting variable speed device of automobile |
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