JPH0645735Y2 - Actuator control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an actuator control device, and more particularly, to a technique capable of ensuring operation in an emergency, such as an electronically controlled transmission. About what is valid.

[Conventional technology]

As an automatic transmission that automatically executes switching operations for automobile transmissions in response to operating conditions, it is an actuator for selecting and shifting that selects and shifts the transmission mechanism, and fluid supply and discharge to both actuators. There is an electronically controlled transmission that is provided with a solenoid valve that switches the solenoid valve and a controller including a computer that controls the solenoid valve in accordance with the operating condition.

[Problems to be solved by the device]

In such an electronically controlled transmission, there is a problem in that if the computer control circuit or the electromagnetic valve drive circuit fails and the actuator cannot operate normally, the operation becomes impossible. When such a failure occurs, especially on the road, it is necessary to move to a place where a failure inspection or repair can be performed.

Therefore, there has been proposed a device capable of ensuring at least a switching operation to the first forward speed and the reverse gear position when such a failure occurs.

This device is a spool valve that is operated by manual operation,
It is equipped with a hydraulic circuit that supplies and discharges fluid to and from the actuator by rotating the spool valve.Even if the solenoid valve stops operating due to an electrical failure of the solenoid valve, the actuator can be operated by manually operating the spool valve. It can be forced to operate. Therefore, the gear shift operation can be performed and the vehicle can be moved even if the solenoid valve has an electrical failure.

However, in such an electronically controlled transmission, since a spool valve and a hydraulic circuit are required, it is necessary to form a spool valve and a complicated hydraulic circuit, which causes a problem of cost increase.

An object of the present invention is to provide an actuator control device capable of forcibly operating a solenoid valve for driving an actuator by a manual operation in an emergency.

[Means for Solving the Problems]

An actuator control device according to the present invention comprises a group of solenoid valves (14, 15, 16) for switching supply and discharge of fluid to and from an actuator, and a controller for controlling the group of solenoid valves (14, 15, 16). In the actuator control device, a manual operation shaft (19) is provided corresponding to at least one actuator (1), and the manual operation shaft (19) is provided.
Is the plunger (14C, 1) of each solenoid valve (14, 15, 16)
Rods (14D, 15D, 1) protruding from 5C, 16C)
6D) is arranged so that it can be contacted, and each rod (14D, 15D, 16D) is attached to this manually operated shaft (19).
The sliding groove (20) is formed along the axial direction so that the manual operation shaft (19) can move in the axial direction when it is in contact with the rod (14D) by rotating the manual operation shaft (19). , 15
D, 16D) pushes the plungers (14C, 15C, 16C) in the operating direction, and the rods (14D, 15D, 16D) in place when the manual operation shaft (19) rotates. Each non-operating groove (22) to be maintained is opened along the radial direction,
It is characterized in that the actuator (1) is manually operated by sliding and rotating the manually operated shaft (19).

[Action]

According to the above-mentioned means, in an emergency when the solenoid valve becomes electrically inoperable due to electrical failure of the solenoid valve, the plunger of each solenoid valve is forcibly operated by sliding and rotating the manually operated shaft. However, since the actuator can be actuated according to the driver's desire, the minimum movement of the vehicle is ensured, and traffic safety is ensured.

〔Example〕

FIG. 1 is a schematic view showing an electronically controlled transmission according to an embodiment of the present invention, FIG. 2 is each sectional view for explaining an operating state of an actuator, and FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1, and FIG.
The drawing is a sectional view taken along the line VV of FIG.

In this embodiment, an electronically controlled transmission as an actuator control device according to the present invention includes a select actuator 1 and a shift actuator (not shown) for operating a fork in a transmission (not shown). I have it. The actuator 1 has an outer cylinder 2, an inner cylinder 3, a piston 4 and a piston rod 5, and an inner cylinder 3, a piston 4 and a piston rod 5 are provided in an outer cylinder chamber 6.
Is slidably inserted, and the piston 4 and the piston rod 5 are slidably inserted into the inner cylinder chamber 7. A first port 8, a second port 9, and a third port 10 communicating with the outer cylinder chamber 6 are opened on the side wall of the outer cylinder 2. The first port 8, the second port 9, and the third port 10 are connected to the first select solenoid valve 14, the second select solenoid valve 15, and the third select solenoid valve 16 via hydraulic circuits 11, 12, and 13, respectively. It is connected.

Solenoid valves 14, 15, 16 are solenoids 14A, 15A, 16 respectively
A, hydraulic switching parts 14B, 15B, 16B, plungers 14C, 15C, 16
Each solenoid is controlled by a controller (not shown) including a computer and the like. The hydraulic pressure switching parts 14B, 15B, 16B are provided with first ports 14a, 15a, 16a, second ports 14b, 15b, 16b, and third ports 14c, 15c, 16c. The first ports 14a, 15a, 16a are connected to the first port 8, the second port 9, and the third port 10, respectively, and the second port 14a
b, 15b, 16b are connected to it hydraulic pressure source 17, each third port 1
4c, 15c, 16c are connected to the tank 18. Each first port 14a, 15a, 16a is adapted to communicate with the second port 14b, 15b, 16b when the respective plunger 14C, 15C, 16C is activated.

Rods 14D, 15D and 16D are projected from the solenoid valves 14, 15 and 16, respectively, and the rods 14D, 15D and 16D are attached to the plunger 14C,
It is connected to the ends of 15C and 16C so that they can move integrally. Then, the rods 14D, 15D, 16D are respectively inserted into the sliding grooves 20 of the manually operating shaft 19 for selection arranged at a position where they can contact the rods. The sliding groove 20 is formed along the axial direction of the manual operation shaft 19, and is formed as a groove that can be moved in the axial direction while the manual operation shaft 19 is in contact with each rod.

The manually operated shaft 19 is provided with actuating grooves 21 and non-actuating grooves 22 in different positions at positions corresponding to the respective solenoid valves 14, 15, 16. That is, the operating groove 21 is opened along the radial direction of the manual operating shaft 19 so as to press each rod in the plunger operating direction by the rotation of the manual operating shaft 19, and the non-operating groove 22 of the manual operating shaft 19 is formed. It is formed as an annular groove that keeps each rod in place during rotation. And the first solenoid valve 14
The non-operation groove 22 is provided at the first position in the portion corresponding to
Actuating grooves 21 are opened at the third and fourth positions, respectively. In the portion corresponding to the second solenoid valve 15, the operating groove 21 is opened at the first and third positions, and the non-operating groove is provided at the second and fourth positions.
22 have been opened. An operating groove 21 is provided at the first and second positions and a non-operating groove 22 is provided at the third and fourth positions at a portion corresponding to the third solenoid valve 16.

Next, the operation will be described.

Under normal conditions, the solenoids 14A, 15A, 16A are automatically energized by the controller in accordance with the driving condition, so that the shift condition optimal for the driving condition at that time is created by the selecting actuator 1 and the shifting actuator.

By the way, when a failure occurs in the computer control circuit in the controller or the drive electric circuit for the solenoid in each solenoid valve, it is desirable to take measures to stop further traveling by the self-diagnosis function for traffic safety. However, continuing to stop on public roads not only hinders traffic, but is rather dangerous.
Therefore, in such a case, it is necessary to take a minimum measure to enable the vehicle to be moved to a safe place.

In such a case, in this embodiment, the driver can forcibly operate the select actuator 1 and the shift actuator by sliding and rotating the manual operation shaft 19.

That is, when the manual operation shaft 19 is slid and set to the first position and then rotated, the rods 15D and 16D are pressed,
The hydraulic circuits of the solenoid valves 15 and 16 are switched, and as shown in FIG.
The actuator 1 is forced to operate as shown in FIG. Next, after returning the manually operated shaft 19 to its original position,
When the manually operated shaft 19 is slid to set to the second position and then rotated, the rods 14D and 16D are pressed and the actuator 1 is in a state as shown in FIG. 2 (b). Becomes When the manual operation shaft 19 is set to the third position and then rotated, the rods 14D and 15D are pressed and the actuator 1 is brought into a state as shown in FIG. 2 (c). Similarly, when the manual operation shaft 19 is set to the fourth position and then rotated, only the rod 14D is pressed, and the actuator 1 is brought into a state as shown in FIG. 2 (d).

Thus, in the present embodiment, each solenoid valve 14, 1
Even if the circuit for driving 5, 16 by electric control fails, the driver can forcibly operate the actuator 1 by sliding and rotating the manual operation shaft 19.

Although only the configuration for driving the select actuator 1 is shown in the present embodiment, a manual operation shaft for driving the shift actuator can be similarly configured.
By operating the select manual operation shaft 19 and the shift manual operation shaft to operate the select actuator 1 and the shift actuator, the gear shift operation can be performed even in an emergency.

The present invention is not limited to the above embodiment,
It goes without saying that various modifications can be made without departing from the spirit of the invention.

For example, although the actuator control device in the electronically controlled transmission has been described in the above embodiments, the present invention is not limited to this, and can be applied to a control device for an actuator used in an industrial robot or the like.

As described above, according to the present invention, by sliding and rotating the manually operated shaft, the plunger of the solenoid valve is forcibly operated so that the actuator can be operated. It is possible to secure the operation by the actuator in an emergency even with a simple configuration without using a circuit, and it is possible to reduce the cost.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an electronically controlled transmission which is an embodiment of the present invention, and FIGS. Each sectional view, FIG. 3 is a sectional view taken along line III-III of FIG. 1, and FIG.
FIG. 5 is a sectional view taken along line IV-IV in FIG. 5, and FIG. 5 is a sectional view taken along line VV in FIG. 1 ... Select actuator, 2 ... Outer cylinder,
3 ... inner cylinder, 4 ... piston, 5 ... piston rod, 8 ... first port, 9 ... second port, 10 ... third port, 11, 12, 13 ... hydraulic circuit, 14 ... … 1st select solenoid valve, 15 …… 2nd select solenoid valve, 16 …… 3rd
Solenoid valve for selection, 14A, 15A, 16A ... Solenoid, 14
B, 15B, 16B …… hydraulic switching part, 14C, 15C, 16C …… plunger, 14D, 15D, 16D …… rod, 19 …… selection manual operation shaft, 20 …… sliding groove, 21 …… operating groove , 22 …… Non-operating groove.

Claims (1)

[Scope of utility model registration request] 1. A group of solenoid valves (14, 15, 16) for switching supply and discharge of fluid to and from an actuator, and the solenoid valves (14, 15, 1).
6) In an actuator control device including a controller for controlling a group, a manual operation shaft (19) is provided corresponding to at least one actuator (1), and the manual operation shaft (19) is provided.
Is the plunger (14C, 1) of each solenoid valve (14, 15, 16)
Rods (14D, 15D, 1) protruding from 5C, 16C)
6D) is arranged so that it can be contacted, and each rod (14D, 15D, 16D) is attached to this manually operated shaft (19).
The sliding groove (20) is formed along the axial direction so that the manual operation shaft (19) can move in the axial direction when it is in contact with the rod (14D) by rotating the manual operation shaft (19). , 15
D, 16D) pushes the plungers (14C, 15C, 16C) in the operating direction, and the rods (14D, 15D, 16D) in place when the manual operation shaft (19) rotates. Each non-operating groove (22) to be maintained is opened along the radial direction,
An actuator control device characterized in that the actuator (1) is manually operated by sliding and rotating a manually operated shaft (19).