CN209925463U - Working cylinder assembly with hydraulic power-assisted clutch - Google Patents
Working cylinder assembly with hydraulic power-assisted clutch Download PDFInfo
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- CN209925463U CN209925463U CN201920673554.6U CN201920673554U CN209925463U CN 209925463 U CN209925463 U CN 209925463U CN 201920673554 U CN201920673554 U CN 201920673554U CN 209925463 U CN209925463 U CN 209925463U
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- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000000740 bleeding effect Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000010985 leather Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 1
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model discloses a working cylinder assembly with a hydraulic power-assisted clutch, which comprises a working cylinder body, wherein an input push rod is arranged in the working cylinder body, the working cylinder body is positioned at the right end of the input push rod and is detachably provided with a control valve assembly, and the right end of the control valve assembly is detachably provided with a power-assisted cylinder assembly; the control valve assembly comprises an elastic check ring, a first sealing ring, a control piston, a second sealing ring, a control valve body and a return spring; the power cylinder assembly comprises a power cylinder body, a power cylinder piston, a return spring, a third sealing ring and a safety valve, an output push rod is integrally arranged at the right end of the power cylinder piston, the third sealing ring is sleeved on the power cylinder piston, and the power cylinder piston and the inner wall surface of a cavity of the second piston form a seal through the third sealing ring. Above-mentioned technical scheme, structural design is reasonable, compact structure, small, the helping hand is big, effectively alleviate navigating mate's start operating strength and the practicality of shifting.
Description
Technical Field
The utility model relates to an automobile clutch system technical field, concretely relates to take hydraulic pressure helping hand clutch working cylinder assembly.
Background
The clutch working cylinder is one of the executing elements of the vehicle clutch system, when the gear shifting operation is carried out, the clutch pedal is stepped, the hydraulic pressure output by the clutch main cylinder is transmitted to the working cylinder through a pipeline, the piston and the input push rod are pushed, and the separating fork drives the separating bearing to separate the magic friction sheet, so that the separation of the clutch is realized.
The clutch of the existing passenger vehicle and light vehicle has small transmission torque, small separation strength of the clutch and small force fed back to the pedal. However, the clutches of commercial vehicles and large engineering vehicles have large transmission torque, large separation strength, large force fed back to the pedals, heavy feeling of the driver and great labor intensity of the driver. The braking of commercial car is mostly pneumatic braking system, and most commercial cars have designed clutch pneumatic booster from taking the air supply on utilizing the car, and the separation of clutch is controlled with driver pedal power jointly under the effort of cylinder, has alleviateed driver's intensity of labour greatly. However, on a large-sized engineering truck, the clutch separation strength is higher, and the pneumatic booster device is large in size, small in boosting, rough in action and poor in practicability due to air sources and structural reasons, so that the pneumatic booster device is not suitable for high-frequency and large operation strength of starting and gear shifting of the large-sized engineering truck, and a driver without the booster device is very difficult to operate the large-sized engineering truck.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a take hydraulic power-assisted clutch working cylinder assembly that structural design is reasonable, compact structure, small, the helping hand is big, effectively alleviate navigating mate's the operating strength and the practicality of starting to shift gears are good.
In order to achieve the above purpose, the utility model provides a following technical scheme: a working cylinder assembly with a hydraulic power-assisted clutch comprises a working cylinder body, wherein an input push rod is arranged in the working cylinder body, a control valve assembly is detachably arranged at the right end of the input push rod of the working cylinder body, and a power-assisted cylinder assembly is detachably arranged at the right end of the control valve assembly; the control valve assembly comprises an elastic check ring, a first sealing ring, a control piston, a second sealing ring, a control valve body and a return spring, wherein a first piston cavity is arranged in the control valve body, the first sealing ring is sleeved on the control piston, a piston convex rod is integrally arranged at the right end of the control piston, the return spring is sleeved on the piston convex rod, and a first sealing surface is arranged at the right end of the piston convex rod; the power cylinder assembly comprises a power cylinder body, a power cylinder piston, a return spring, a third sealing ring and a safety valve, wherein a second piston cavity is formed in the power cylinder body, the power cylinder piston is installed in the second piston cavity, and a second sealing surface is arranged on the left end surface of the power cylinder piston; an output push rod is integrally arranged at the right end of the piston of the power cylinder, the third sealing ring is sleeved on the piston of the power cylinder, and the piston of the power cylinder and the inner wall surface of the cavity of the second piston form a seal through the third sealing ring.
The utility model discloses further set up to: the working cylinder body comprises a working cylinder body, a leather cup, a working cylinder piston and an air bleeding screw, a third piston cavity is arranged in the working cylinder body, the working cylinder piston is installed in the third piston cavity, an air bleeding port is formed in the left end of the working cylinder body and communicated with the third piston cavity, and the left end of the air bleeding screw is in threaded connection with the air bleeding port; the leather cup is sleeved on the working cylinder piston, the working cylinder piston moves rightwards to push the input push rod to move rightwards, the control piston and the piston convex rod are pushed to move rightwards through the input push rod, so that the first sealing surface is in contact with the second sealing surface to form sealing, and the power cylinder piston and the output push rod are pushed to move rightwards to complete the clutch separation action.
The utility model discloses still further set up to: the safety valve comprises a safety valve connecting screw, a safety valve copper gasket, a safety valve body, a safety valve rod, a safety valve spring, a safety valve end cover and a safety valve elastic retainer ring which are sequentially arranged from left to right, wherein a fourth sealing ring is sleeved on the safety valve body, a fifth sealing ring is sleeved on the safety valve end cover, and the safety valve body is sealed with the inner wall surface of the safety valve mounting cavity through the fourth sealing ring; the safety valve end cover forms a seal with the inner wall surface of the safety valve installation cavity through a fifth sealing ring; the safety valve body and the power cylinder body are locked and fixed through a safety valve connecting screw; the safety valve copper washer is sleeved on the safety valve connecting screw and is locked and fixed by the safety valve connecting screw; the left end of the safety valve spring is connected with the right end of the safety valve rod, the right end of the safety valve spring is sleeved at the left end of the safety valve end cover, and the left end of the safety valve rod and the safety valve body form a seal under the elastic force of the safety valve spring; the right end of the safety valve installation cavity is provided with a safety valve retaining ring groove, and the safety valve elastic retaining ring is clamped in the safety valve retaining ring groove.
The utility model discloses still further set up to: the right end of the working cylinder body is sleeved with a fixing nut, and the right end of the working cylinder body is fixedly connected with the left end of the control valve body through the fixing nut in a threaded manner; the right end of the control valve body is fixedly connected with the left end of the cylinder body of the power cylinder through threads.
The utility model discloses still further set up to: a first hydraulic input port is formed in the upper left end of the cylinder body of the working cylinder and is communicated with the third piston cavity; the third piston cavity, the first piston cavity and the second piston cavity are communicated; a second hydraulic input port is formed in the upper left end of the power cylinder body and is communicated with a second piston cavity, and an oil return port is formed in the upper right end of the power cylinder body and is communicated with the second piston cavity; and the upper left end of the safety valve body is provided with a safety valve input port.
The utility model discloses still further set up to: and a conical surface structure is adopted between the left end of the safety valve rod and the safety valve body to form sealing.
The utility model has the advantages that: compared with the prior art, the utility model discloses the structure sets up more rationally, utilizes engineering machine tool hydraulic system advantage, has designed and has utilized system hydraulic pressure to carry out the clutch working cylinder assembly of taking hydraulic power assisting device of helping hand, and compact structure, small, helping hand are big and are the line output, have alleviateed navigating mate's starting operational strength of shifting greatly, and the practicality is good.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a working cylinder body according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a transition body assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a piston of a cylinder according to an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the working cylinder assembly with the hydraulic power-assisted clutch disclosed by the utility model comprises a working cylinder body 1, wherein an input push rod 2 is arranged in the working cylinder body 1, the right end of the working cylinder body 1, which is positioned on the input push rod 2, is detachably provided with a control valve assembly 3, and the right end of the control valve assembly 3 is detachably provided with a power-assisted cylinder assembly 4; the control valve assembly 3 comprises an elastic retainer ring 31, a first sealing ring 32, a control piston 33, a second sealing ring 34, a control valve body 35 and a return spring 36, wherein a first piston cavity 351 is arranged in the control valve body 35, the first sealing ring 32 is sleeved on the control piston 33, a piston convex rod 37 is integrally arranged at the right end of the control piston 33, the return spring 36 is sleeved on the piston convex rod 37, and a first sealing surface 371 is arranged at the right end of the piston convex rod 37; the boosting cylinder assembly 4 comprises a boosting cylinder body 41, a boosting cylinder piston 42, a return spring 43, a third sealing ring 44 and a safety valve 45, wherein a second piston cavity 411 is arranged in the boosting cylinder body 41, the boosting cylinder piston 42 is installed in the second piston cavity 411, and a second sealing surface 421 is arranged on the left end surface of the boosting cylinder piston 42; an output push rod 46 is integrally arranged at the right end of the power cylinder piston 42, the third sealing ring 44 is sleeved on the power cylinder piston 42, and the power cylinder piston 42 and the inner wall surface of the second piston cavity 411 are sealed through the third sealing ring 44.
Preferably, the working cylinder body 1 comprises a working cylinder body 11, a leather cup 12, a working cylinder piston 13 and an air bleeding screw 14, a third piston cavity 111 is arranged in the working cylinder body 11, the working cylinder piston 13 is installed in the third piston cavity 111, an air bleeding port 112 is arranged at the left end of the working cylinder body 11, the air bleeding port 112 is communicated with the third piston cavity 111, and the left end of the air bleeding screw 14 is in threaded connection with the air bleeding port 112; the leather cup 12 is sleeved on the working cylinder piston 13, the working cylinder piston 13 moves rightwards to push the input push rod 2 to move rightwards, and the input push rod 2 pushes the control piston 33 and the piston convex rod 37 to move rightwards, so that the first sealing surface 371 and the second sealing surface 421 are contacted to form a seal, and the power cylinder piston 42 and the output push rod 46 are pushed to move rightwards to complete the clutch separation action.
In order to make the structure of the present invention set more reasonably, as preferred, the lower end of the cylinder body 41 of the present embodiment is provided with a safety valve installation cavity 412, the safety valve 45 is embedded in the safety valve installation cavity 412, the safety valve 45 includes a safety valve connection screw 451, a safety valve copper washer 452, a safety valve body 453, a safety valve stem 454, a safety valve spring 455, a safety valve end cover 456 and a safety valve elastic collar 457 which are sequentially arranged from left to right, the safety valve body 453 is sleeved with a fourth sealing ring 458, the safety valve end cover 456 is sleeved with a fifth sealing ring 459, and the safety valve body 453 forms a seal with the inner wall surface of the safety valve installation cavity 412 through the fourth sealing ring 458; the safety valve end cover 456 forms a seal with the inner wall surface of the safety valve installation cavity 412 through a fifth sealing ring 459; the safety valve body 453 and the power cylinder body 41 are locked and fixed through a safety valve connecting screw 451; the safety valve copper washer 452 is sleeved on the safety valve connecting screw 451, and the safety valve copper washer 452 is locked and fixed by the safety valve connecting screw 451; the left end of the safety valve spring 455 is connected with the right end of the safety valve rod 454, the right end of the safety valve spring 455 is sleeved at the left end of the safety valve end cover 456, and the left end of the safety valve rod 454 and the safety valve body 453 form a seal under the elastic force of the safety valve spring 455; the right end of the safety valve installation cavity 412 is provided with a safety valve retaining ring groove 413, and the safety valve elastic retaining ring 457 is clamped in the safety valve retaining ring groove 413.
The right end of the working cylinder body 11 is sleeved with a fixing nut 5, and the right end of the working cylinder body 11 is fixedly connected with the left end of the control valve body 35 through the fixing nut 5 in a threaded manner; the right end of the control valve body 35 is fixedly connected with the left end of the boosting cylinder body 41 through threads.
A first hydraulic input port 113 is formed in the upper left end of the working cylinder body 11, and the first hydraulic input port 113 is communicated with the third piston cavity 111; the third piston chamber 111, the first piston chamber 351 and the second piston chamber 411 are communicated; a second hydraulic input port 414 is formed in the left upper end of the power cylinder body 41, the second hydraulic input port 414 is communicated with a second piston cavity 411, an oil return port 415 is formed in the right upper end of the power cylinder body 41, and the oil return port 415 is communicated with the second piston cavity 411; a safety valve input port 4531 is provided at the left upper end of the safety valve body 453.
The left end of the safety valve stem 454 and the safety valve body 453 form a seal by adopting a conical surface structure.
The safety valve is designed together with the power-assisted cylinder body and mainly plays a role in hydraulic overload protection, and when input hydraulic pressure exceeds a set value, the safety valve opens hydraulic unloading and flows back to an oil tank through an oil filling port.
In actual application:
(1) when the vehicle does not act as a clutch, pressure oil of a hydraulic system enters a left cavity of a second piston cavity of the power cylinder assembly through a second hydraulic input port, passes through a middle hole of a piston of the power cylinder, three inclined holes in the piston of the power cylinder are communicated with the right side, the pressure oil enters a right cavity of the second piston cavity of the power cylinder assembly and enters a system loop through an oil return port, the piston of the power cylinder does not act, and power output is not generated.
(2) When the clutch operation is needed, pressure oil passing through the clutch main cylinder is input into the first hydraulic input port and enters the working cylinder body, and the working cylinder piston is pushed to drive the input push rod to move rightwards. The control piston moves to the right under the action of the input push rod of the part, the first sealing surface of the piston convex rod on the control piston is sealed with the second sealing surface of the power cylinder piston to play a role of a control valve, the gap is gradually reduced until the control piston is attached, system hydraulic oil is closed through an inclined hole oil return channel of the power cylinder piston, hydraulic pressure acts on the section of the power cylinder piston to push the power cylinder piston assembly to move to the right, the power cylinder piston assembly and the working cylinder body acting force (overcoming friction force) form output force through the output push rod, and the output force is used as power for clutch separation and can realize clutch separation action through shifting forks, separating bearings and other movable parts.
(3) After the separation action is finished, the pedal force of the existing clutch is removed, the hydraulic pressure of the clutch main cylinder is removed, the control piston moves leftwards under the action of the return spring, the first sealing surface of the piston convex rod on the control piston is separated from the second sealing surface of the piston of the power cylinder in a sealing mode, system hydraulic oil flows into a system loop through an oil return channel, and the control piston returns to the initial position under the action of the spring force of the return spring. The entire separation action is completed.
(4) Safety protection: when system hydraulic oil enters the power cylinder and enters the valve body through the safety valve oil inlet hole and the safety valve body external hole, the conical surface of the safety valve rod is attached to the safety valve body under the spring force action of the safety valve spring, and when the force of the hydraulic pressure acting on the conical surface is smaller than the pre-pressure of the safety valve spring, the safety valve is closed; when the hydraulic acting force is larger than the pretightening force of the safety valve spring, the valve rod of the safety valve moves to the right, the safety valve is opened, and the hydraulic oil enters the power cylinder assembly and flows back to a system loop through the oil return port. And when the hydraulic acting force is smaller than the pretightening force of the safety valve spring, the safety valve is closed again.
(5) The assistance principle is as follows: the control piston moves right under the action of an input push rod at the right end of the working cylinder body to be in contact with the piston of the power cylinder, an oil return path of the power cylinder is cut off, and the power cylinder plays a power assisting role.
The utility model has reasonable structure, utilizes the advantages of the hydraulic system of the engineering machinery, designs the clutch working cylinder assembly with the hydraulic power assisting device which utilizes the hydraulic system to assist, has compact structure, small volume and large power assisting and is output by a wire, greatly lightens the operation intensity of starting and gear shifting of a driver, and has good practicability; the hydraulic pressure is adopted as a boosting medium, hydraulic control is realized, impact is avoided, and the hydraulic control device is particularly suitable for large engineering machinery such as large forklifts, engineering vehicles and the like.
The above embodiments are only used for further explanation of the present invention, and it is not understood that the present invention is limited by the protection scope of the present invention, and the technical engineers in the field are right according to the above contents of the present invention.
Claims (6)
1. The utility model provides a take hydraulic pressure helping hand clutch working cylinder assembly, includes working cylinder body (1), is provided with input push rod (2), its characterized in that in working cylinder body (1): the right end of the working cylinder body (1) positioned on the input push rod (2) is detachably provided with a control valve assembly (3), and the right end of the control valve assembly (3) is detachably provided with a power cylinder assembly (4); the control valve assembly (3) comprises an elastic check ring (31), a first sealing ring (32), a control piston (33), a second sealing ring (34), a control valve body (35) and a return spring (36), wherein a first piston cavity (351) is formed in the control valve body (35), the first sealing ring (32) is sleeved on the control piston (33), a piston convex rod (37) is integrally arranged at the right end of the control piston (33), the return spring (36) is sleeved on the piston convex rod (37), and a first sealing surface (371) is arranged at the right end of the piston convex rod (37); the power cylinder assembly (4) comprises a power cylinder body (41), a power cylinder piston (42), a return spring (43), a third sealing ring (44) and a safety valve (45), wherein a second piston cavity (411) is formed in the power cylinder body (41), the power cylinder piston (42) is installed in the second piston cavity (411), and a second sealing surface (421) is arranged on the left end surface of the power cylinder piston (42); an output push rod (46) is integrally arranged at the right end of the power cylinder piston (42), a third sealing ring (44) is sleeved on the power cylinder piston (42), and the power cylinder piston (42) and the inner wall surface of the second piston cavity (411) are sealed through the third sealing ring (44).
2. The working cylinder assembly with the hydraulic power-assisted clutch as claimed in claim 1, wherein: the working cylinder body (1) comprises a working cylinder body (11), a leather cup (12), a working cylinder piston (13) and an air bleeding screw (14), a third piston cavity (111) is arranged in the working cylinder body (11), the working cylinder piston (13) is installed in the third piston cavity (111), an air bleeding opening (112) is formed in the left end of the working cylinder body (11), the air bleeding opening (112) is communicated with the third piston cavity (111), and the left end of the air bleeding screw (14) is in threaded connection with the air bleeding opening (112); the leather cup (12) is sleeved on the working cylinder piston (13), the working cylinder piston (13) moves rightwards to push the input push rod (2) to move rightwards, the control piston (33) and the piston convex rod (37) are pushed to move rightwards through the input push rod (2), and therefore the first sealing surface (371) and the second sealing surface (421) are contacted to form sealing, and the power cylinder piston (42) and the output push rod (46) are pushed to move rightwards to complete clutch separation.
3. The working cylinder assembly with the hydraulic power-assisted clutch as claimed in claim 2, characterized in that: the safety valve is characterized in that a safety valve installation cavity (412) is formed in the lower end of the power cylinder body (41), the safety valve (45) is arranged in the safety valve installation cavity (412) in an embedded mode, the safety valve (45) comprises a safety valve connecting screw (451), a safety valve copper gasket (452), a safety valve body (453), a safety valve rod (454), a safety valve spring (455), a safety valve end cover (456) and a safety valve elastic retainer ring (457) which are sequentially arranged from left to right, a fourth sealing ring (458) is sleeved on the safety valve body (453), a fifth sealing ring (459) is sleeved on the safety valve end cover (456), and the safety valve body (453) is sealed with the inner wall face of the safety valve installation cavity (412) through the fourth sealing ring (; the safety valve end cover (456) forms a seal with the inner wall surface of the safety valve installation cavity (412) through a fifth sealing ring (459); the safety valve body (453) and the power cylinder body (41) are locked and fixed through a safety valve connecting screw (451); the safety valve copper gasket (452) is sleeved on the safety valve connecting screw (451), and the safety valve copper gasket (452) is locked and fixed by the safety valve connecting screw (451); the left end of the safety valve spring (455) is connected with the right end of the safety valve rod (454), the right end of the safety valve spring (455) is sleeved at the left end of the safety valve end cover (456), and the left end of the safety valve rod (454) and the safety valve body (453) form a seal under the elastic force action of the safety valve spring (455); the right end of the safety valve installation cavity (412) is provided with a safety valve retaining ring groove (413), and the safety valve elastic retaining ring (457) is clamped in the safety valve retaining ring groove (413).
4. The working cylinder assembly with the hydraulic power-assisted clutch as claimed in claim 2, characterized in that: the right end of the working cylinder body (11) is sleeved with a fixing nut (5), and the right end of the working cylinder body (11) is fixedly connected with the left end of the control valve body (35) through the fixing nut (5) in a threaded manner; the right end of the control valve body (35) is fixedly connected with the left end of the power cylinder body (41) through threads.
5. The working cylinder assembly with the hydraulic power-assisted clutch as claimed in claim 4, wherein: a first hydraulic input port (113) is formed in the left upper end of the working cylinder body (11), and the first hydraulic input port (113) is communicated with the third piston cavity (111); the third piston cavity (111), the first piston cavity (351) and the second piston cavity (411) are communicated; a second hydraulic input port (414) is formed in the left upper end of the power cylinder body (41), the second hydraulic input port (414) is communicated with a second piston cavity (411), an oil return port (415) is formed in the right upper end of the power cylinder body (41), and the oil return port (415) is communicated with the second piston cavity (411); and a safety valve input port (4531) is arranged at the upper left end of the safety valve body (453).
6. The working cylinder assembly with the hydraulic power-assisted clutch as claimed in claim 3, wherein: the left end of the safety valve rod (454) and the safety valve body (453) form a seal by adopting a conical surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920673554.6U CN209925463U (en) | 2019-05-13 | 2019-05-13 | Working cylinder assembly with hydraulic power-assisted clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920673554.6U CN209925463U (en) | 2019-05-13 | 2019-05-13 | Working cylinder assembly with hydraulic power-assisted clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925463U true CN209925463U (en) | 2020-01-10 |
Family
ID=69090392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920673554.6U Active CN209925463U (en) | 2019-05-13 | 2019-05-13 | Working cylinder assembly with hydraulic power-assisted clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043579A (en) * | 2019-05-13 | 2019-07-23 | 温州市东启汽车零部件制造有限公司 | Band hydraulic booster clutch working cylinder assembly |
-
2019
- 2019-05-13 CN CN201920673554.6U patent/CN209925463U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043579A (en) * | 2019-05-13 | 2019-07-23 | 温州市东启汽车零部件制造有限公司 | Band hydraulic booster clutch working cylinder assembly |
| CN110043579B (en) * | 2019-05-13 | 2024-01-26 | 温州市东启汽车零部件制造有限公司 | Working cylinder assembly with hydraulic power-assisted clutch |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Cylinder assembly with hydraulic power clutch Effective date of registration: 20210624 Granted publication date: 20200110 Pledgee: Zhejiang Dongtou Wenzhou rural commercial bank Limited by Share Ltd. Pledgor: WENZHOU DONGQI AUTO PARTS MANUFACTURE Co.,Ltd. Registration number: Y2021990000555 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200110 Pledgee: Zhejiang Dongtou Wenzhou rural commercial bank Limited by Share Ltd. Pledgor: WENZHOU DONGQI AUTO PARTS MANUFACTURE Co.,Ltd. Registration number: Y2021990000555 |