JP2597585Y2 - Rotary handle device for limit switch operation - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary handle device, and more particularly to a rotary handle device for operating a switch in a length measuring machine for measuring coordinates of a precision processed product such as a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, as a rotary handle device S used in a length measuring machine as shown in FIG. 6, X and Y are rotated by rotating left and right rotary handles to prevent runaway due to malfunction. Slider unit U in Y and Y directions
Is moved, and when the user releases his / her hand from the rotating handle 44, the original state (ie, the stop position) is restored. This will be described in detail with reference to FIGS. 4 and 5. As shown in FIGS. 4 and 5, a rotating handle 44 is assembled via a bearing 43 to a support shaft 42 erected on a base plate 41. A disc-shaped housing 45 is integrated with the rotating handle 44 and rotates together with the rotating handle 44.

[0003] On a base plate 41, a housing 4 is provided.
The limit switches SW1, SW2, SW3, and SW4 of the actuator with roller are provided at predetermined positions around the roller 5.

[0004] At the outer peripheral edge of the housing 45, flat surfaces having surfaces in the same direction as the support shaft 42 are formed at three places.
At all times (when stopped), as shown in FIG. 5, the rollers 46a related to the limit switches SW1 to SW3 are in contact with the first plane 45a, and the rotor 46a related to the limit switch SW4 is It is in contact with the second plane 45b.

The second plane 45b and the third plane 4
A tension coil spring 47 is interposed between the intermediate portion 5c and the base plate 41 so that the rotating handle 44 is held and rotated by hand, and when the hand is released, the rotating handle 44 returns to the original position. Has become. Reference numeral 48 denotes a bearing, which is a portion that supports the extension coil spring 47,
It freely rotates around L2.

As shown in FIG. 4, a clock stop means 49 is provided between the lower seating surface of the housing 45 and the base plate 41. The click stop means 49 is provided with a spring-biased ball 49a. And a recess 49b on the lower seating surface of the housing 45.
The housing 45 is positioned by engaging the ball 49a with the ball 49b. Reference numeral 50 denotes a decorative board.

[0007] For example, the switch SW1 is an O for moving the slider unit U of the length measuring device at a low speed or a high speed.
N, OFF switch and switch SW2 are O for medium speed movement.
The N, OFF switch and switch SW3 are ON / OFF switches for high-speed movement or low-speed movement, and the switch SW4 is a switch for reverse direction switching.
5 is turned rightward (clockwise) in FIG. 5, the swing arm 46 is pushed by the corner portion 45 a 1 of the flat surface 45 a to push the slider 46 c, the switch SW 1 is turned on, and the slider unit U moves at a low speed. When the rotating handle 44 is further turned, the switch SW2 is also turned on, and the slider unit U moves at a medium speed. When the rotating handle 44 is further rotated, the switch SW3 is also turned on, and the slider unit U moves at high speed. At this time, the switch SW4 does not operate, and continues to move the slider unit U in the forward direction, for example. When the rotary handle 44 is turned in the opposite direction (left direction in FIG. 2), the swing arm 46 pushes the slider 46c by the corner 45b1 of the flat surface 45b, and the switch S is turned on.
When W4 is operated and the slider unit U is switched to the backward movement, and the rotating handle 44 is further turned, the switch SW3 is operated and the middle speed switch SW1 is operated by the low speed backward switch SW2 to perform high speed backward movement (switch SW4).
Is a switch that switches the forward mode to the reverse mode). If the user releases the hand while rotating the rotary handle 44, the rotary handle 44 returns to the original position (stop position) by the tensile force of the extension coil spring 47.

[0008]

In the above-mentioned example, when the hand is released, the tension coil spring 47 returns to the original position. At this time, the tension of the tension coil spring 47 causes the tension coil spring 47 to return to the reference position shown in FIG. Forward / reverse rotating handle 4
4 (and the housing 45) swings. Therefore, there is a problem that the switches SW1 and SW4 are turned on and off.

To solve the above problem, it is possible to increase the friction torque by the click stop means 49 and the spring force of the extension coil spring 47. However, if such means is used, the rotating handle 44 must be rotated. A large force is required, and the burden on the hand increases for precise operation. For this reason, it is necessary to set the load by the tension coil spring 47 and the click stop means 49 small. Further, the tension coil spring 47 and the stopper means 49
It is difficult to adjust the load. If the force of the tension coil spring 47 is too large, the above-described rotational vibration of the housing 45 occurs. If the spring force in the clip stop means 49 is too large, the housing 45 stops before returning to the original position. There is also a problem that it will occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary handle device for operating a limit switch, which has a simple structure and does not cause rotational vibration when the rotary handle is returned.

[0011]

According to the present invention, there is provided a rotating handle supported on a base plate and capable of rotating forward and backward, a plurality of limit switches disposed at an outer peripheral position of the rotating handle, and A limit switch operating rotary handle device comprising: a fast-forward switch operating portion formed at an outer peripheral position of the rotary handle to perform an on / off operation of the limit switch; and a spring interposed between the rotary handle and a base plate. A reference surface having a plane in the tangential direction of the rotary handle is formed on the handle, and the spring is formed of a linear leaf spring, and the linear leaf spring is attached to a fixed bush provided on the base plate. > with the end side is slidably supported being arranged in contact along the reference plane, said at both ends of the straight-line-shaped leaf spring
And locking portion to be engaged is formed in a fixed bush, made possible predetermined amount slid in the extending direction of the linear leaf spring, the
The amount of rotation of the rotating handle is opposite to the direction of rotation of the rotating handle.
The angle of the reference plane located on the opposite side is
The problem is solved by a configuration in which the rotation is not performed from the perpendicular position of .

The rotation amount of the rotary handle is preferably configured such that the angle of the reference surface located on the opposite side to the rotation direction of the rotary handle does not rotate from a perpendicular position passing through the center of rotation to the reference surface when stopped. is there.

[0013]

According to the rotary switch device for operating the limit switch according to the present invention, the rotary handle has a reference surface having a plane tangential to the rotary handle, and the spring is formed of a linear leaf spring. linear leaf spring the base
Both sides can slide on the fixed bush provided on the plate
With and is supported by the ability are arranged in contact along the reference plane, the fixed bushing at both end portions of the straight-line-shaped leaf spring
A locking portion is formed to be slidable by a predetermined amount in an extending direction of the linear leaf spring, and the rotation handle is
Rotation amount is located on the opposite side of the rotation direction of the rotation handle.
The angle of the reference plane that is
When the rotating handle is turned, the angle of the reference plane located on the opposite side in the rotation direction changes from the contact state between the reference plane and the linear leaf spring. Press. Thereby, the linear leaf spring is flexible. In addition, since the linear leaf spring is slidable in the extending direction, the linear leaf spring is bent by being pressed at the corner of the reference plane located on the opposite side of the rotation direction of the rotary handle. The deflection of the linear leaf spring is controlled by the fixed bushes formed at both ends of the leaf spring.
The locking portion to be stopped moves until regulated by the fixed bush . When the hand is released from the rotating handle, the rotating handle rotates in the opposite direction (counterclockwise) due to the restoring force of the leaf spring itself that tries to straighten the linear leaf spring. The plate spring comes into contact with the reference surface on the rotating handle side in a state where the bent linear plate spring is straightened, and the rotating handle stops without rotational vibration.

The rotation amount of the rotary handle is configured such that the angle of the reference surface located on the opposite side to the rotation direction of the rotary handle does not rotate from a perpendicular position passing through the center of rotation to the reference surface when stopped. It is possible to prevent the rotation handle from excessively turning clockwise about the corner of the reference plane as a fulcrum.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, but can be variously modified within the scope of the present invention. FIGS. 1 to 3 show an embodiment according to the present invention. In this embodiment, the same members or the same arrangement as those of the conventional example shown in FIGS. The description is omitted.

In this embodiment, a fourth plane 45d is formed as a reference plane between a second plane 45b and a third plane 45c, which are planes extending in the tangential direction of the rotary handle 44 in the housing 45. ing. This fourth plane 4
A leaf spring 10 is arranged along 5d and in contact with the plane 45d. That is, the fourth plane 45d is used as a reference plane,
The fixed bushes 20 are arranged on both sides of the extension of the fourth plane as the reference plane. The fixed bush 20 includes an attachment portion 21 attached to the base plate 41, and a leaf spring holding portion 22 integrated with the attachment portion 21, and the leaf spring holding portion 22 defines a space 23 in which the leaf spring 10 slides. It has a U-shaped cross section.

The leaf spring 10 of the present embodiment is made of metal, and has end projections 11, 11 that are larger than the space 23 of the leaf spring holding part 22 at both ends as shown in FIG. The end projections 11 on both sides prevent the leaf spring 10 from falling off from the fixed bush 20 and restrict the sliding range of the leaf spring 10. Due to the end projection 11, the rotating handle 44 is moved to the corner 45 of the reference surface 45d.
Excessive rotation in the clockwise direction with d1 as a fulcrum is prevented, and the amount of rotation of the rotary handle 44 is set such that the angle 45d1 of the reference surface located on the opposite side to the rotation direction of the rotary handle 44 is shifted to the reference surface 45d when stopped. From the perpendicular position X passing through the center of rotation of. Thus, the leaf spring 10
Both ends are slidably supported in the longitudinal direction by the fixed bush 20, and the surface of the leaf spring 10 is
Is extended so as to be in contact with the reference surface 45d. The leaf spring supporting surface of the fixed bush 20 is made of synthetic resin or fluorine resin (Teflon material or the like) so that the leaf spring 10 can slide smoothly.

Reference numeral 30 denotes a rotary encoder for detecting the amount of movement of the moving table of the length measuring device, and reference numeral 32 denotes a handle directly connected to the rotary encoder. The handle 32 is directly connected to the encoder 30. When the handle 32 is turned one turn, the encoder 30 also makes one turn. Also, the encoder 30 uses a 1000 P / R encoder, and in relation to the feed amount of the ball screw,
Move the encoder 1P / R (move handle 32)
And an electric circuit so that the slider unit U moves by 1 μm. When the rotating handle 44 is turned, the slider unit U moves at a constant speed, but the handle 32 is configured so that the slider unit U moves by the rotated rotation angle. That is, the rotary handle 44 is used for fast-forwarding, and the handle 32 is used to operate the delicate amount of movement of the slider unit U by the feel of the hand.

The operation of the limit switch operating rotary handle device S having the above configuration will be described. The rotary handle 44 grasped by hand is rotated clockwise (clockwise) from the state of FIG. 2 (shown in the embodiment). When the position is indicated by a virtual line, the corner 45d1 of the fourth surface (reference surface) 45d presses the leaf spring 10, and the leaf spring 10 bends as indicated by reference numeral 10A. The leaf spring holding portion 22 of the fixed bushing 20, since the permit sliding of the plate spring 10, the leaf spring 10 bends <br/> a circle smooth without receiving a large load from the fixed bushing 20 side. At this time, only the restoring force acting on the leaf spring 10 to return the bending to the original state is applied. Therefore, the rotation handle 44 can be operated with a delicate touch of the hand. When the hand of the rotating handle 44 is released from this state, the rotating handle 44 is rotated counterclockwise (counterclockwise) by the restoring force of the leaf spring 10, and the clockwise corner 45d of the reference surface 45d is rotated.
2 comes into contact with the plate 10.

At this time, the rotary handle 44 is moved by the inertial force.
(And the housing 45) will continue to rotate. However, the entire reference surface 45d of the housing 45 is in contact with the leaf spring 10, and the rotation of the rotary handle 44 due to the reaction force of the leaf spring 10 is prevented. Therefore,
The handle (housing) does not vibrate rotationally around the reference position (original position), and smoothly rests at the original position.

[0021]

According to the present invention, only the restoring force acting to return the bending to the original shape is applied to the linear leaf spring , and the rotary handle can be operated with a delicate touch of the hand. When the rotating handle is released, it returns to its original position.At that time, the reference surface and the leaf spring come into contact and stop at the center position without rotational vibration. Since there is no switch input, it works without malfunction even when used roughly . Further, when the rotation angle is increased, the moment is not increased as compared with the conventional tension spring, and the operability is improved.

When the rotation angle is increased, the moment is not increased as compared with the conventional tension spring, and the operability is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rotary handle device for operating a limit switch according to the present invention.

FIG. 2 is a plan view showing a state in which a decorative board of FIG. 1 is removed.

FIG. 3 is a plan view of a leaf spring used in the present invention.

FIG. 4 is a sectional view of a rotary handle device for operating a limit switch showing a conventional example.

FIG. 5 is a plan view showing a state in which the decorative board of FIG. 4 is removed.

FIG. 6 is a plan view showing an example of a length measuring device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Spring (leaf spring) 11 Locking part 41 Base plate 44 Rotating handle 45d Reference surface 46c Switch operating part SW1, SW2, SW3, SW4 Limit switch S Rotating handle device

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotary handle supported on a base plate and capable of rotating forward and backward, a plurality of limit switches disposed at an outer peripheral position of the rotary handle, and an on / off position of the limit switch formed at an outer peripheral position of the rotary handle. A rotary handle device for operating a limit switch, comprising: a fast-forward switch operating portion for performing a turning operation; and a spring interposed between the rotary handle and a base plate, wherein the rotary handle has a reference surface having a plane in a tangential direction of the rotary handle. Is formed, the spring is formed from a linear leaf spring, and the linear leaf spring is slidably supported on both ends by a fixed bush provided on the base plate, and comes into contact with the reference plane. Locking portions are formed at both ends of the linear plate spring and are locked by the fixed bush. The rotation amount of the rotary handle is such that the angle of the reference surface located on the opposite side to the rotation direction of the rotary handle passes through the center of rotation to the reference surface when stopped. A rotation handle device for operating a limit switch, wherein the rotation handle device is configured not to rotate from a perpendicular position.