CN115727069A - Hydraulic clutch actuating mechanism with shielding cover - Google Patents
Hydraulic clutch actuating mechanism with shielding cover Download PDFInfo
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- CN115727069A CN115727069A CN202211541016.4A CN202211541016A CN115727069A CN 115727069 A CN115727069 A CN 115727069A CN 202211541016 A CN202211541016 A CN 202211541016A CN 115727069 A CN115727069 A CN 115727069A
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- push rod
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a hydraulic clutch actuating mechanism with a shielding case, which comprises: execute body, piston, execution push rod, return spring, shield cover and position sensor, one side of executing the body is equipped with the execution groove, the piston is sealed to slide and is located execute the inslot, the execution inslot is located the tank bottom of execution groove with form between the piston and execute the chamber, execute the body on have with the oil inlet of execution chamber intercommunication the one end of executing the push rod is fixed the piston deviates from one side of executing the chamber, the other end of executing the push rod extends to execute the groove outside, return spring locates execute the intracavity, return spring's one end with piston connection, the other end with the tank bottom of executing the groove is connected, the shield cover is located the outside of executing the body. The invention improves the detection accuracy and stability of the position sensor, thereby improving the execution accuracy of the execution mechanism.
Description
Technical Field
The invention relates to the technical field of automobile speed change systems, in particular to a hydraulic clutch actuating mechanism with a shielding cover.
Background
The existing clutch actuating mechanism is simple in structure, only has the functions of forward pushing and returning, is a mechanism commonly used by the existing manual transmission, and due to the fact that the manual transmission needs a high driving level, a driver is tired in the driving process, and more technicians are researching manual-automatic integrated transmissions to liberate the left foot and the right hand of the driver.
With the emergence of more and more manual-automatic integrated gearboxes, the requirement on a clutch executing mechanism is higher and higher, the existing clutch executing mechanism detects the position of a piston in the clutch executing mechanism by adopting a position sensor so as to embody the executing state of the executing mechanism on a clutch, so that a driver can carry out real-time adjustment according to the executing state of the clutch, the executing mechanism and the position sensor are directly exposed outside, the position sensor can be influenced by external electromagnetic interference to detect the executing state of the clutch, the executing precision is further improved, and external splashing sundries can damage the executing machine and influence the service life because the executing mechanism is exposed outside.
Disclosure of Invention
In view of the above problems of the existing actuating mechanism, it is an object of the present invention to provide a hydraulic clutch actuating mechanism with high stability, high precision and long service life of the shielding case.
The specific technical scheme is as follows:
a hydraulic clutch actuator with a shield includes:
the device comprises an execution body, wherein one side of the execution body is provided with an execution groove;
the piston is arranged in the execution groove in a sealing and sliding mode, an execution cavity is formed between the bottom of the execution groove and the piston in the execution groove, and an oil inlet communicated with the execution cavity is formed in the execution body;
one end of the execution push rod is fixed on one side of the piston, which is far away from the execution cavity, and the other end of the execution push rod extends to the outer side of the execution groove and is used for pushing the clutch to be engaged or disengaged;
the return spring is arranged in the execution cavity, one end of the return spring is connected with the piston, and the other end of the return spring is connected with the bottom of the execution groove;
the shielding cover is sleeved outside the execution body;
and the position sensor is arranged on the execution body, is positioned between the execution body and the shielding cover and is used for sensing the position of the piston so as to reflect the displacement of the execution push rod.
As further improvement and optimization of this scheme, carry out the groove including mutual intercommunication and coaxial setting's first cell body and second cell body, the sealed slip of piston is located the first inslot, the second cell body is located the tank bottom of first cell body, return spring's one end with piston contact, the other end with the inner wall contact of first cell body. .
As further improvement and optimization of the scheme, the inner wall of the first groove body is coaxially provided with an annular clamping groove, the annular clamping groove is formed in one side, deviating from the return spring, of the piston, and an elastic check ring is clamped in the annular clamping groove and used for limiting the piston to be separated from the execution groove.
As a further improvement and optimization of the scheme, an induction magnet is embedded outside the piston, and the position sensor induces the position of the piston through the induction magnet.
As a further improvement and optimization of the solution, the piston is externally sleeved with a lip ring, and the piston is in sealing fit with the inner wall of the actuating groove through the lip ring.
As a further improvement and optimization of the scheme, the outer coaxial sleeve of the execution push rod is provided with a dust cover, the dust cover is arranged in a telescopic mode, one end of the dust cover deviates from one end of the execution push rod, and the other end of the dust cover is connected to the execution body.
As a further improvement and optimization of the scheme, an installation groove is formed in the notch of the execution groove in the radial direction outwards, and the other end of the dust cover is connected to the bottom of the installation groove.
As a further improvement and optimization of the scheme, one end of the execution push rod, which is far away from the piston, is provided with a spherical joint.
Compared with the prior art, the technical scheme has the positive effects that:
(1) The position sensor is externally provided with the shielding cover, so that the detection influence of an external electromagnetic signal on the position of the piston by the position sensor can be shielded, the detection accuracy and stability of the position sensor are improved, the execution accuracy of the execution mechanism is improved, and meanwhile, the shielding cover can prevent external sundries from sputtering to damage the position sensor and the actuator body, so that the service life is prolonged.
(2) According to the invention, the actuating push rod is pushed outwards by hydraulic pressure of hydraulic oil to push the clutch to be separated, and the actuating push rod is retracted inwards by the diaphragm spring on the clutch to engage the clutch, so that the clutch is high in actuation instantaneity, simple in actuation structure and high in economical efficiency.
(3) In this embodiment, when under initial condition, the elasticity of the diaphragm spring on the separator to the piston is equal to the elasticity of the return spring to the piston, so that the piston is in a stress balance position, thereby effectively avoiding the situation that the axial shaking of the piston occurs when the clutch actuating mechanism does not work, so that the position sensor detects the signal fluctuation caused by the shaking of the piston, and improving the stability of the actuating mechanism.
(5) When the piston is in limit matching with the elastic retainer ring, the execution push rod pushes the clutch to be completely separated, so that the clutch is prevented from being damaged by over-pushing, the piston 5 is prevented from being separated from the execution groove due to overlarge hydraulic pressure in the execution cavity, and the stability of the internal structure of the execution structure is improved.
(6) According to the invention, the dust cover is arranged outside the execution push rod, and the execution push rod can perform telescopic motion, so that external dust can not enter the execution groove all the time to influence the sliding of the piston in the execution groove, and the execution accuracy and stability of the execution mechanism are further improved.
Drawings
FIG. 1 is a schematic diagram of an overall structure of a hydraulic clutch actuator with a shielding case according to the present invention;
FIG. 2 is a cross-sectional view showing the overall structure of a hydraulic clutch actuator with a shield case according to the present invention;
in the drawings: 1. an execution body; 2. a shield case; 3. a ball joint; 4. a dust cover; 5. a piston; 6. executing a push rod; 7. a lip-shaped ring; 8. a return spring; 9. an induction magnet; 10. a position sensor; 11. an execution slot; 12. an oil inlet; 13. mounting grooves; 14. an annular clamp groove; 20. a circlip; 111. a second tank body; 112. a first tank body.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Fig. 1 is a schematic diagram showing an overall structure of a hydraulic clutch actuator with a shield case according to the present invention, fig. 2 is a sectional view showing an overall structure of a hydraulic clutch actuator with a shield case according to the present invention, and fig. 1 to 2 show a hydraulic clutch actuator with a shield case 2 according to a preferred embodiment, including: the actuating device comprises an actuating body 1, a piston 5, an actuating push rod 6, a return spring 8, a shielding case 2 and a position sensor 10, wherein an actuating groove 11 is formed in one side of the actuating body 1, the piston 5 is arranged in the actuating groove 11 in a sealing and sliding mode, an actuating cavity is formed between the bottom of the actuating groove 11 and the piston 5 in the actuating groove 11, an oil inlet 12 communicated with the actuating cavity is formed in the actuating body 1, one end of the actuating push rod 6 is fixed to one side, away from the actuating cavity, of the piston 5, the other end of the actuating push rod 6 extends to the outer side of the actuating groove 11 and is used for pushing the clutch to be connected or separated, the return spring 8 is arranged in the actuating cavity, one end of the return spring 8 is connected with the piston 5, the other end of the return spring is connected with the bottom of the actuating groove 11, the shielding case 2 is sleeved outside the actuating body 1, and the position sensor 10 is arranged on the actuating body 1 and located between the actuating body 1 and the shielding case 2 and is used for sensing the position of the piston 5 to reflect displacement of the actuating push rod 6.
In the embodiment, when the clutch is disengaged, high-pressure hydraulic oil enters the execution cavity from the oil inlet 12, drives the piston 5 to slide towards the notch direction of the execution groove 11 under the hydraulic pressure and the elastic force of the return spring 8, drives the execution push rod 6 to push outwards, and presses a diaphragm spring (not shown in the figure) of the clutch through a rocker arm (not shown in the figure) of the clutch to push the clutch to perform disengagement motion, the motion position of the piston 5 is detected through the position sensor 10, when the piston 5 moves to a preset position, the high-pressure hydraulic oil is stopped to be continuously supplied to the execution cavity, the clutch is completely disengaged, when the clutch is engaged, the piston 5 presses the return spring 8 under the elastic force of the diaphragm spring and performs return motion, the hydraulic oil in the execution cavity flows back through the oil inlet 12, the push rod 6 performs backward return motion at the same time, until the elastic force of the diaphragm spring to the piston 5 is equal to the elastic force of the return spring 8, at the moment, the spring of the piston 5 is in force balance and completes the return motion, and the engagement of the clutch is completed.
In this embodiment, the shielding case 2 is provided outside the position sensor 10, so that the influence of an external electromagnetic signal on the detection of the position sensor 10 on the position of the piston 5 can be shielded, the detection accuracy and stability of the position sensor 10 are improved, the execution accuracy of the execution mechanism is improved, and meanwhile, the shielding case 2 can prevent external sundries from sputtering to damage the position sensor 10 and the actuator body, so that the service life is prolonged.
In the embodiment, the execution push rod 6 is pushed outwards by hydraulic pressure of hydraulic oil to push the clutch to be separated, the execution push rod 6 is retracted inwards by a diaphragm spring on the clutch to enable the clutch to be engaged, and the execution real-time performance is high, the execution structure is simple, and the economy is high.
In this embodiment, when in the initial state, the elastic force of the diaphragm spring on the separator to the piston 5 is equal to the elastic force of the return spring 8 to the piston 5, so that the piston 5 is in a stress balance position, and the axial shaking of the piston 5 when the clutch executing mechanism does not work is effectively avoided to cause the signal fluctuation caused by the shaking of the piston 5 detected by the position sensor 10.
Further, as a preferred embodiment, the execution groove 11 includes a first groove 112 and a second groove 111 that are communicated with each other and coaxially disposed, the piston 5 is slidably disposed in the first groove in a sealing manner, the second groove 111 is disposed at the bottom of the first groove 112, one end of the return spring 8 contacts with the piston 5, and the other end contacts with the inner wall of the first groove 112.
Further, as a preferred embodiment, an annular clamping groove 14 is coaxially arranged on the inner wall of the first groove body 112, the annular clamping groove 14 is arranged on one side of the piston 5 away from the return spring 8, an elastic check ring 20 is clamped in the annular clamping groove 14 and used for limiting the piston 5 to be separated from the execution groove 11, when the piston 5 is in limit fit with the elastic check ring 20, the execution push rod 6 pushes the clutch to be completely separated, and the clutch is protected from being damaged by over-pushing.
In the embodiment, when the piston 5 is in limit fit with the elastic retainer ring 20, the execution push rod 6 pushes the clutch to be completely separated, so that the clutch is prevented from being damaged by over-pushing, the piston 5 is prevented from being separated from the execution groove 11 due to overlarge hydraulic pressure in the execution cavity, and the stability of the internal structure of the execution structure is improved.
Further, as a preferred embodiment, an induction magnet 9 is embedded outside the piston 5, and the position sensor 10 senses the position of the piston 5 through the induction magnet 9.
Further, as a preferred embodiment, a lip 7 is sleeved on the outer side of the piston 5, and the piston 5 is in sealing fit with the inner wall of the actuating groove 11 through the lip 7.
Furthermore, as a preferred embodiment, a dust cover 4 is coaxially sleeved outside the actuating push rod 6, the dust cover 4 is telescopically arranged, one end of the dust cover 4 is connected with one end of the actuating push rod 6 departing from the piston 5, and the other end of the dust cover is connected to the actuating body 1.
Further, as a preferred embodiment, a mounting groove 13 is provided radially outward at the notch of the actuating groove 11, and the other end of the dust cover 4 is connected to the bottom of the mounting groove 13.
In this embodiment, the dust cover 4 is arranged outside the execution push rod 6, and the execution push rod 6 can perform telescopic motion, so that external dust can not enter the execution groove 11 all the time to influence the sliding of the piston 5 in the execution groove 11, and the execution accuracy and stability of the execution mechanism are further improved.
Further, as a preferred embodiment, the end of the actuating ram 6 facing away from the piston 5 is provided with a ball joint 3.
Specifically, the rocker arm of the clutch comprises an inner rocker arm and an outer rocker arm, the inner rocker arm is in contact with a diaphragm spring of the clutch through a release bearing of the clutch, and the outer rocker arm is in contact with the spherical joint 3.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A hydraulic clutch actuator with a shield cover is characterized by comprising:
the device comprises an execution body, a first control unit and a second control unit, wherein one side of the execution body is provided with an execution groove;
the piston is arranged in the execution groove in a sealing and sliding manner, an execution cavity is formed between the bottom of the execution groove and the piston in the execution groove, and an oil inlet communicated with the execution cavity is formed in the execution body;
one end of the execution push rod is fixed on one side of the piston, which is far away from the execution cavity, and the other end of the execution push rod extends to the outer side of the execution groove and is used for pushing the clutch to be engaged or disengaged;
the return spring is arranged in the execution cavity, one end of the return spring is connected with the piston, and the other end of the return spring is connected with the bottom of the execution groove;
the shielding cover is sleeved outside the execution body;
the position sensor is arranged on the execution body, is positioned between the execution body and the shielding cover and is used for sensing the position of the piston so as to reflect the displacement of the execution push rod.
2. The hydraulic clutch actuating mechanism with the shielding case according to claim 1, wherein the actuating groove comprises a first groove body and a second groove body which are communicated with each other and coaxially arranged, the piston is arranged in the first groove body in a sealing and sliding manner, the second groove body is arranged at the groove bottom of the first groove body, one end of the return spring is in contact with the piston, and the other end of the return spring is in contact with the inner wall of the first groove body. .
3. The hydraulic clutch actuating mechanism with the shielding case according to claim 2, wherein an annular clamping groove is coaxially formed in the inner wall of the first groove body, the annular clamping groove is formed in one side, away from the return spring, of the piston, and an elastic check ring is clamped in the annular clamping groove and used for limiting the piston to be separated from the actuating groove.
4. The shrouded hydraulic clutch actuator of claim 1 wherein the piston has an induction magnet embedded in an exterior thereof, the position sensor sensing the position of the piston via the induction magnet.
5. The shrouded hydraulic clutch actuator of claim 1 wherein the piston is externally sleeved with a lip, the piston sealingly engaging the inner wall of the actuator slot through the lip.
6. The hydraulic clutch actuating mechanism with the shielding case according to claim 1, wherein a dust cover is coaxially sleeved outside the actuating push rod and is arranged in a telescopic manner, one end of the dust cover is connected with one end of the actuating push rod, which is far away from the piston, and the other end of the dust cover is connected to the actuating body.
7. The hydraulic clutch actuator with a shielding case according to claim 6, wherein a mounting groove is formed radially outward at the notch of the actuating groove, and the other end of the dust cover is connected to the bottom of the mounting groove.
8. The shrouded hydraulic clutch actuator of claim 7 wherein the end of the actuator push rod facing away from the piston is provided with a ball joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211541016.4A CN115727069A (en) | 2022-12-01 | 2022-12-01 | Hydraulic clutch actuating mechanism with shielding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211541016.4A CN115727069A (en) | 2022-12-01 | 2022-12-01 | Hydraulic clutch actuating mechanism with shielding cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115727069A true CN115727069A (en) | 2023-03-03 |
Family
ID=85299944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211541016.4A Pending CN115727069A (en) | 2022-12-01 | 2022-12-01 | Hydraulic clutch actuating mechanism with shielding cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115727069A (en) |
-
2022
- 2022-12-01 CN CN202211541016.4A patent/CN115727069A/en active Pending
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