JP2001022459A - Handle device of hand control valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an erroneous shift from a parking position to a test position by engaging a stopper whose guide surface is freely slidable and able to move onto a hold surface with the inner end part of a rod so that is stopped from rotating and freely slidable along the axis. SOLUTION: When the handle device 10 is shifted from the parking position to the test position, a handle body 20 is rotated in its circumferential direction to rotate the rod 27 and then the stopper 46 becomes able to move onto the hold surface 15. When a handle head 17 is rotated to the test body for a body in this state, the handle head 17 rotates an operation shaft, so a hand control valve 1 is placed in test mode. When the handle device 10 is shifted from the parking position to the test position, the handle body 17 needs to be rotated to the body after the handle body 20 is rotated in its circumferential direction, so artificial malfunction and malfunction by mistake can surely be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand control valve which is controlled by a manual operation, and more particularly to an improvement of a handle device assembled for the manual operation. The present invention relates to a handle device for a hand control valve that is effective for use in a brake system mounted on a connected vehicle.

[0002]

2. Description of the Related Art In a brake system mounted on a connected vehicle, a hand control valve for controlling a parking brake is mounted. This hand control valve can control the parking brake on the tractor side and simultaneously control the brake on the trailer side by rotating the handle head of the handle device mounted on the hand control valve. ing.

[0003] In a handle device (hereinafter referred to as a handle device) of a hand control valve for a parking brake mounted on the connected vehicle, "the connected vehicle (tractor and trailer) is stopped only by the braking force of the tractor. Is it possible to set a test mode?

As an example describing a hand control valve for a connected vehicle, see Japanese Utility Model Publication No. Sho 62-40.
No. 220 is known. Japanese Patent Publication No. Hei 8-7469 and Utility Model Registration No. 2507133 describe examples of a handle device.

[0005]

In the steering wheel device in which the test position corresponding to the test mode is set, the handle head is moved from the parking brake position corresponding to the parking brake mode (hereinafter referred to as parking position) to the test position. If the shift can be made by the turning operation, there is a possibility that the test head is erroneously shifted to the test position when the handle head is turned from the release position corresponding to the release mode (brake release mode) to the parking position. Therefore, in the handle device in which the test position is set, it is necessary to prevent an erroneous transition from the parking position to the test position.

It is an object of the present invention to provide a handle device for a hand control valve which can prevent an erroneous transition from a parking position to a test position.

[0007]

According to the present invention, there is provided a handle device for a hand control valve, the handle device being rotatably supported by a body in which the hand control valve is incorporated and connected to an operation shaft of the hand control valve. A cylindrical handle main body protruding radially outward from the handle head; a rod slidably supported in the cylindrical hollow portion of the handle main body in the axial direction; and an outer periphery of the handle main body. A grip that is slidably supported in the axial direction and is interlocked with the rod; a guide surface having an arc surface concentric with the center of the handle head and guiding the inner end surface of the rod; A handle device for a hand control valve having an engagement recess formed and engaged with an inner end of the rod. A holding surface that forms a step with respect to the guide surface is formed on the guide surface, and a stopper that can slide on the guide surface and ride on the holding surface is prevented from rotating at the inner end of the rod. And is fitted slidably in the axial direction.

For example, when the handle device according to the above-mentioned means is shifted from the parking position to the test position, if the handle body is rotated in the circumferential direction and the rod is rotated, the stopper can ride on the holding surface. State. In this state, when the handle head is turned to the test position with respect to the body, the handle head turns the operation shaft, so that the hand control valve is set to the test mode. Thus, for example, when shifting the handle device from the parking position to the test position, it is necessary to rotate the handle body in the circumferential direction and then rotate the handle head with respect to the body. As compared with the case where the handle device can be shifted from the parking position to the test position simply by rotating the handle with respect to the body, it is possible to reliably prevent the occurrence of a malfunction due to human error or negligence, and The safety of operation of the control valve can be improved.

In addition, when returning the handle device from the test position to the parking position, it is possible to quickly return to the parking mode, so that the operability of the hand control valve can be ensured.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In the present embodiment, the handle device 10 according to the present invention is configured to be mounted on a hand control valve 1 mounted on a brake system of a tractor and a trailer. As shown in FIG. 1, the hand control valve 1 includes a body 2 having an inlet and an outlet which are each fluidly connected to a brake system. A control port is formed in a valve passage between the two, and the control port is configured to be opened and closed by a valve element 4 operated by an operation shaft 3. And valve element 4
The operating shaft 3 for operating the shaft is concentrically arranged on the body 2 and is rotatably supported by the body 2.

As shown in FIGS. 1 to 5, the handle device 10 includes a stopper ring 1 formed in a ring shape.
1 is provided. The stopper ring 11 is fitted to one end of the body 2 of the hand control valve 1 concentrically with the operating shaft 3, and the female spline 12 is fitted to the male spline 13 on the body 2 side to prevent rotation. A guide surface 14 having a circular arc surface concentric with the center of the operation shaft 3 is provided at a position on the outer peripheral surface of the stopper ring 11 corresponding to a handle mounting portion 18 of a handle head 17 described later in the circumferential direction with a predetermined length in the entire axial direction. It is formed on a step surface having a constant depth over the range. At one end of the guide surface 14, a holding surface 15 for holding a stopper 46 to be described later is formed on a step surface having an intermediate height between the guide surface 14 and the outer peripheral surface of the stopper ring 11. At the end of the guide surface 14 near the holding surface 15, an insertion hole 16 as an engagement concave portion that engages with an engagement portion 28 of a rod 27 described later is formed in an oval hole shape that is slightly longer in the circumferential direction. ing.

The handle device 10 includes a handle head 17 formed in a circular ring shape having an inner diameter larger than that of the stopper ring 11. The handle head 17 is rotatably fitted to the outer periphery of the stopper ring 11, and is connected to the operation shaft 3 so as to rotate integrally with the female serration 17a and the male serration 3a by being serrated. At a position facing upward on the outer periphery of the handle head 17, a substantially cylindrical handle mounting portion 18 is provided so as to protrude radially outward, and an upper end portion on the inner periphery of the handle mounting portion 18 has a female screw portion. 1
9 are formed. As shown in FIG. 6, the operation shaft 3 is provided with a torsion spring 52 having one end locked to the handle head 17 and the other end locked to the body 2. 17 is urged in one direction (hereinafter, referred to as a return direction).

The handle mounting portion 18 includes a handle body 20.
Is inserted and fixed. That is, the handle main body 20 is integrally formed into an elongated cylindrical shape having a lower end opened and an upper end closed, and the male screw 21 formed on the outer periphery of the lower end is formed into the female screw 19 of the handle mounting portion 18.
And is fixed by a lock nut 22. A button mounting portion 23 formed in a two-stage disc shape is projected from an upper end surface of the handle mounting portion 18 in the handle main body 20, and a spring engagement is provided at a position shifted from the center of the upper end surface of the button mounting portion 23. The hole 24 is formed so as to penetrate vertically. A pair of L-shaped guide holes 25 are formed on the side wall of the intermediate portion of the handle body 20.
The vertical holes 25a and 25a and the horizontal holes 25b and 25b are penetrated and opened so as to face each other.

A rod 27 is slidably inserted into the hollow cylindrical portion 26 of the handle body 20 from the lower end opening. The rod 27 is formed in a round bar shape using a metal material having mechanical strength such as iron. An engagement portion 28 is substantially formed at a lower end portion of the rod 27, and the engagement portion 28 is inserted into the insertion hole 16 of the stopper ring 11 so as to freely enter and exit. A spring 30 serving as a torsion spring and a compression spring is interposed between the rod 27 and the handle main body 20 at the upper end in the hollow cylindrical portion 26 in a state of accumulated force.
The locking portion 31 at the upper end of the spring 30 is inserted into the spring locking hole 24, and the locking portion 32 at the lower end of the spring 30 is a spring locking portion 29 protruding from the upper end of the rod 27.
It is locked to. That is, the rod 27 is
With 0, the engaging portion 28 is always repelled in the direction of insertion into the insertion hole 16 and in the circumferential direction.

Guide hole 25 in the middle of rod 27
A pin insertion hole 33 is formed at a position facing the hole so as to penetrate in the radial direction. At the lower end of the rod 27, a detent pin 34 is formed so as to penetrate in a radial direction orthogonal to the pin insertion hole 33.

The button mounting portion 2 at the upper end of the handle body 20
The button 3 is attached with a button 35 integrally formed using resin. That is, a button body 36 having a columnar shape is formed at the upper end of the button 35, and a plurality of hook pieces 37 having an inward claw 38 are formed at the lower end thereof. The claw portion 38 is fitted in the button mounting portion 23 from above and locked in a radially inward direction.
The outer diameter of the main body 36 is formed to be slightly smaller than the outer diameter of the handle main body 20, and the outer diameter formed by the hook pieces 37 is substantially equal to the outer diameter of the handle main body 20. A shoulder 39 is formed by a step with the hook piece 37.

A grip 40 integrally formed into a cylindrical shape having an outer diameter that is easy to grasp using resin is fitted on the outer periphery of the handle body 20 so as to be slidable in the axial and circumferential directions. When the grip 40 is fitted to the handle main body 20, the main body 36 of the button 35 attached to the upper end of the handle main body 20 projects upward from the upper end insertion opening 41 of the grip 34, and the button 3
The opening edge 42 of the upper end insertion opening 41 faces the shoulder 39 of the fifth from the upper side.

At a position facing the guide hole 25 of the grip 40, a pair of fitting holes 43, 43 are formed so as to face each other and penetrate in the radial direction.
A spring pin 44 is provided between the pair of guide holes 25, 25 of the handle body 20 and the pin insertion hole 3 of the rod 27.
3 are inserted so as to pass through. The grip 40 and the rod 27 are connected by a spring pin 44 so as to move integrally.

A substantially cylindrical stopper 46 made of metal is fitted around the outer periphery of the engaging portion 28 of the rod 27 so as to be slidable in the axial direction while being prevented from rotating. 46 is a lower end surface of the rod 27 and a stopper 46
Spring 45 interposed between the upper end surface of the
Is always biased downward. That is, a pair of guide grooves 48, 48 are respectively provided in the inner peripheral surface of the cylindrical hollow portion 47 of the stopper 46 so as to be opposed to each other over the entire length in the axial direction. Both ends of the detent pin 34 fixed to 27 are respectively fitted slidably in the axial direction.

FIG. 1B is a perspective view of the stopper 46 shown in FIG. 1A as viewed obliquely from below. FIG.
As shown in (b), the lower end surface of the stopper 46 has a substantially square shape when viewed from the bottom, but can be in close contact with the cylindrical guide surface 14 instead of a flat surface. It is formed on a concave cylindrical surface. That is, the lower end surface of the stopper 46 has a pair of parallel linear portions 51, 51, and arcs 50 at both ends of an arc surface 50 connecting the linear portions 51, 51.
a, 50a.

When the grip 40 is twisted 90 degrees to enter the test mode, the stopper 46 is twisted 90 degrees via the rod 27, so that the lower surface of the stopper 46 separates from the guide surface 14 of the stopper ring 11. , Stopper 46
Are in contact with the arc of the guide surface 14. Incidentally, in FIG.
FIG. 4 shows a state in which the grip 40 is twisted by 90 degrees. In this way, the stopper 46 moves up and down by being twisted 90 degrees, and the lower end surface of the stopper 46 performs a kind of cam operation. In the following description, the cam operation surface 49 will be described.

Next, the operation will be described. When the connected vehicle travels, the handle device 10 is set to the release position shown in FIG. In other words, the cam operating surface 49 of the stopper 46 coincides with the guide surface 14 of the stopper ring 11 and is pressed by the resilient force of the spring 45, and the lower end surface of the engaging portion 28 of the rod 27 is inserted through the insertion hole. 16 and comes into contact with the guide surface 14, and the spring pin 44 is attached to the handle body 2.
0 is located in the vertical hole 25a of the guide hole 25.

In this state, the spring pins 44
Is located in the vertical hole 25a of the guide hole 25 of the handle body 20, the grip 40 does not rotate, and the torsion force is urged by the spring 30,
There is no rattling. Further, since the handle head 17 is constantly urged in the return direction indicated by the broken arrow R in FIG.
The handle body 20 and the handle head 17 do not rotate with respect to the stopper ring 11, that is, the body 2 due to vibration or the like.

When the hand control valve 1 is shifted from the release position to the parking position, the handle main body 20, that is, the handle head 17 is rotated via the grip 40 in the parking direction indicated by the solid arrow P in FIG. When the steering wheel operation is performed, the steering wheel device 10 is set to the parking position shown in FIG. When the handle device 10 is set to the parking position, the operation shaft 3 connected to the handle head 17 is rotated, so that the hand control valve 1 incorporated in the body 2 is switched to the parking mode.
When the hand control valve 1 is switched to the parking mode, the spring brake device mounted on the tractor discharges air to be in a brake operating state, and the brake device of the trailer is filled with air to be in a brake operating state.

As shown in FIG. 3, when the handle device 10 is moved to the parking position, the engaging portion 28 of the rod 27 is inserted into the insertion hole 16 of the guide surface 14 by the spring 30.
It is pushed and dropped by the resilience of. In this state, the insertion hole 16 of the stopper ring 11 is
2 and the stopper surface 15a of the stopper ring 11 prevents the stopper surface 51a of the stopper 46 from moving in the arrow P direction. Head
It is called handle head. ) 17 is the arrow R shown in FIG.
And a state in which it is impossible to rotate in either direction of arrow P. That is, the parking position of the handle device 10 is maintained in a self-controlled manner, and the parking mode of the hand control valve 1 is automatically secured.

On the other hand, as shown in FIG. 3, when the engaging portion 28 of the rod 27 falls into the insertion hole 16 of the guide surface 14, the spring pin 44 of the rod 27
Of the grip 40.
Can rotate relative to the handle main body 20 by an amount corresponding to the circumferential dimension of the horizontal hole 25b (in the present embodiment, 90 degrees).

In this state, as shown in FIG.
When the grip 40 is turned 90 degrees (hereinafter, referred to as a grip operation) in a direction indicated by an arrow に in FIG. 3 in a plane perpendicular to the axial direction of the grip 40 (hereinafter, referred to as a grip perpendicular plane). As the rod 27 connected to the grip 40 by the spring pin 44 rotates together,
The stopper 46, which is prevented from rotating by the rotation preventing pin 34, is rotated by 90 degrees. When the stopper 46 rotates by 90 degrees, the linear portion 51 of the cam operating surface 49 of the stopper 46 comes into circumscribed relation with the guide surface 14 which is an arc surface as shown in FIG. The arc surface 50 rises from the guide surface 14 and can slide on the holding surface 15 which is an adjacent step surface.

[0029] Therefore, while maintaining the state of being 90 degrees the grip operates the grip 40 in the Θ direction, the handle head 17 is steering in the direction indicated by the solid arrow P ₂ in FIG. 5, the cam actuating surface 49 Of the holding surface 15
In order to transfer to the test position, the handle device 10 is rotated from the parking position shown in FIG. 4 in the direction of the arrow P by that amount, so that the state shifts to the test position shown in FIG.

When the handle device 10 is moved to the test position shown in FIG. 5, the operating shaft 3 connected to the handle head 17 is rotated, so that the hand control valve built inside the body 2 is moved. 1 is switched to the test mode. When the hand control valve 1 is switched to the test mode, the air from the brake device mounted on the trailer is discharged, the brake state of the trailer is released, and the parking of the connected vehicle is performed only by the braking force of the spring brake device mounted on the tractor. The brake state is maintained. That is, it is a state in which it is tested whether or not the parking brake state of the connected vehicle (tractor and trailer) can be secured only by the braking force of the spring brake device mounted on the tractor.

After the test is completed, when the hand is released from the grip 40, the rod 27 is in a state where the torsion return force is urged by the spring 30. It is turned 90 degrees in the opposite direction in the plane. At the same time, since the handle head 17 is urged in the return direction R by the spring 52, the handle head 17 is automatically returned to the parking position shown in FIG. At this time, since the engaging portion 28 of the rod 27 is still fitted in the insertion hole 16 of the stopper ring 11, the handle main body 20 connected to the rod 27, that is, the handle head 17 is in the parking position defined by the insertion hole 16. It will be in a stopped state. That is, by releasing the grip 40 after the test, the handle device 10
Can be automatically returned to the parking position, so that the hand control valve 1 can be automatically returned to the parking mode.

When shifting the handle device 10 from the parking position shown in FIG. 3 to the release position shown in FIG. 2, the driver moves the grip 40 to the arrow H in FIG.
The spring pin 4 of the grip 40
4 rises the vertical hole 25a of the guide hole 25 of the handle body 20, and the rod 27 connected to the spring pin 44 rises. When the rod 27 rises, the engaging portion 2 of the rod 27
Since the handle 8 is pulled out from the insertion hole 16 of the stopper ring 11, the handle body 20 and the handle head 17 can be rotated with respect to the stopper ring 11 in the direction of the release position. In this state, since the handle head 17 is urged in the return direction R by the spring 52, the handle head 17 is automatically operated to the release position.

According to the above-described embodiment, the handle device cannot be shifted from the parking position to the test position unless the handle head is operated after the grip is turned 90 degrees. As compared with the case where the handle device can be shifted from the parking position to the test position, it is possible to reliably prevent the occurrence of erroneous operation due to human erroneous operation or negligence, and to enhance the safety of the hand control valve.

Moreover, when returning the handle device from the test position to the parking position, the handle device is automatically returned to the parking mode by the force of the two springs only by releasing the grip, so that the return to the parking mode is forgotten. Can be prevented. That is, the safety of the handle device of the hand control valve can be further enhanced.

Guide surface 14, insertion hole 1 as engagement recess
The stopper ring 11 formed with the holding surface 6 and the holding surface 15 is spline-coupled to the body 2 so that the guide surface 1
4. Since the positions of the insertion hole 16 as the engagement concave portion and the holding surface 15 with respect to the handle head 17 can be freely set, it is possible to freely select the engagement relationship such as the inclination angle of the grip 40 with respect to the body 2. .

FIG. 7 is a partially cut-away side view showing a handle device of a hand control valve according to another embodiment of the present invention.

This embodiment is different from the above embodiment in that
The point is that a release knob 40A as a grip having a flange is used, and a knob 35A is used instead of a button. That is, in the present embodiment, the knob 35
When the palm is applied to A, the finger of the hand is
The rod 27 is pulled up (slid in the axial direction) by being hooked on the flange portion of A.

As described above, the present invention has been specifically described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. Not even.

For example, the guide surface, the engagement recess and the holding surface are not limited to being formed on the stopper ring fitted to the body, but may be provided directly on the body.

[0040]

As described above, according to the present invention,
If the handle head is not operated after the grip is turned, the parking position cannot be shifted to the test position, so that the safety of operation of the handle device of the hand control valve is improved.

[Brief description of the drawings]

1A and 1B show a handle device of a hand control valve according to an embodiment of the present invention, wherein FIG. 1A is an exploded perspective view, and FIG. 1B is a perspective view of a stopper viewed from a lower cam operating surface side. is there.

FIG. 2 is a partially cutaway side view showing a state of a release position.

FIG. 3 is a partially cut-away side view showing a state of a parking position.

FIG. 4 is a partially cut-away side view showing a state halfway to a test position.

FIG. 5 is a partially cutaway side view showing a state of a test position.

6 is a partially omitted cross-sectional view along the line VI-VI in FIG. 4;

FIG. 7 is a partially cut-away side view showing a test position of a handle device of a hand control valve according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hand control valve, 2 ... Body, 3 ... Operating shaft, 3a ... Male serration, 4 ... Valve element, 10 ... Handle device, 11 ... Stopper ring, 12 ... Female spline, 1
3 Male spline, 14 Guide surface, 15 Holding surface, 1
5a: stopper surface of stopper ring, 16: insertion hole (engaging recess), 17: handle head, 17a: female serration, 18: handle mounting portion, 19: female screw portion, 20 ...
Handle body, 21 ... male thread part, 22 ... lock nut,
23 ... button mounting part, 24 ... spring locking hole, 25 ...
Guide hole, 25a vertical hole, 25b horizontal hole, 26 hollow cylindrical portion of handle body, 27 rod, 28 engaging portion, 29
... Spring retaining part, 30 ... Spring, 31, 32 ...
Locking portion, 33: pin insertion hole, 34: detent pin, 35
... button, 36 ... button body, 37 ... hook piece, 3
8 claw portion, 39 shoulder portion, 40 grip, 41 upper end insertion opening, 42 opening edge, 43 insertion hole, 44 spring pin, 45 spring, 46 stopper, 47 hollow cylindrical portion of stopper , 48: guide groove, 49: cam operating surface,
50: arc surface, 50a: arc, 51: linear portion, 51a ...
Stopper surface, 52: spring, 35A: knob, 40A
... release knob (grip with flange).

Continued on the front page F term (reference) 3D049 AA02 BB08 CC01 HH40 MM05 NN01 QQ01 RR13 3H064 AA03 BA01 CA01 DA03 DA04 3J070 AA03 BA10 BA41 CA44 CA52 CB13 CC12 CD01 DA01

Claims (7)

[Claims] A handle head rotatably supported by a body into which a hand control valve is incorporated and connected to an operation shaft of the hand control valve;
A cylindrical handle main body protruding radially outward from the handle head; a rod slidably supported in the cylindrical hollow portion of the handle main body in the axial direction; A grip that is slidably supported in the direction and is interlocked with the rod; a guide surface having an arc surface concentric with the center of the handle head and guiding the inner end surface of the rod; and a guide surface formed on the guide surface. In the handle device for a hand control valve having an engagement recess engaged with the inner end of the rod, the guide surface is formed with a holding surface that forms a step with respect to the guide surface, A stopper is slidably fitted on the inner end of the rod so as to slide on the guide surface and ride on the holding surface and is slidably fitted in the axial direction. Handle device of de-control valve. 2. A cam operating surface is formed on an end surface of the stopper on the guide surface side, and the cam operating surface has an arc surface equal to the curvature of the guide surface, and the axial direction of the arc surface is The handle device for a hand control valve according to claim 1, wherein the handle device corresponds to an axial direction of the guide surface. 3. A guide hole having a vertical hole and a horizontal hole is formed in a cylindrical wall of the handle main body, and a pin in which the rod and the grip are interlocked is slidable in the guide hole. The handle device for a hand control valve according to claim 1, wherein the handle device is inserted. 4. The hand control valve according to claim 1, wherein the guide surface, the engagement concave portion, and the holding surface are formed on a stopper ring fitted to the body. Handle device. 5. The spring according to claim 1, wherein a spring for constantly urging the rod in a circumferential direction is interposed between the handle body and the rod. Hand control valve handle device. 6. A spring is provided between the body and the handle head, the spring always biasing the handle head in a circumferential direction thereof.
6. The handle device for a hand control valve according to 2, 3, 4, or 5. 7. A handle device for a hand control valve, which switches between a release mode and a brake mode of the hand control valve by turning a handle head, the brake position corresponding to the brake mode in the turning operation of the handle head. A test position corresponding to a test mode is set on a side opposite to a release position corresponding to the release mode, and a turning operation of the handle head is performed to shift the handle head from the brake position to the test position. A handle device for a hand control valve, wherein it is necessary to perform another rotation operation before performing the rotation operation of the handle head.