JPS61215911A - Displacement detecting touch sensor - Google Patents

Abstract

PURPOSE:To detect the highly accurate displacement for the three-dimensional direction by using plural touch sensors and regulating and operating in respective directions needed by a detecting finger. CONSTITUTION:When a detecting finger 2 receives the displacement in the Z direction, the rear edge part of a shaft 3 operates a sensor 5, a displacing signal is outputted to a control circuit, the displacement is removed, and then, the detecting finger 2 is returned to the original position by a return spring 4. Next, when the finger 2 receives the displacement in the Y direction, a guide shaft 6 rotates with the second pivots 8c and 8d as a center, operates a sensor 12a and outputs the displacing signal. When the external force due to displacement is removed, the force of a spring 10a is added through a roller guide 11a to the shaft 6, and the detecting finger 2 is returned to the original position in which the balance is kept with the facing spring 10b. In the same manner when the finger 2 receives the displacement in the X direction, the guide shaft 6 rotates with pivots 8a and 8b as a supporting point, operates a sensor 12c and outputs the displacing signal. Thus, by one finger 2, multi-dimensional and multi-directional displacement can be detected with a high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a displacement detection touch sensor in nine dimensions or position control. In particular, the present invention relates to a displacement detection touch sensor that can detect displacement in three-dimensional directions with one detection finger.

(Prior art) Two displacement detection touch sensors used for conventional dimension or position control are disclosed in Japanese Patent Application No. 59-09353.
There is a three-dimensional touch sensor filed under No. 3.

This three-dimensional touch sensor consists of a main body having four conical holes placed at the vertices of a right-angled quadrilateral, a sphere that engages with each of the conical holes, a leg and an external body whose end surfaces connect to these spheres, respectively. a main shaft having a protruding detection finger; a spring acting on the main shaft to constantly press the ball into contact with the conical hole through the foot; It is composed of a touch sensor that operates when the device is tilted using the points of contact with the two feet as fulcrums, and a case that holds the spring and the touch sensor and is joined and fastened to the main body.

(Problems to be Solved by the Invention) This touch sensor can detect displacement in three-dimensional directions necessary for dimension or position control using one detection finger and a d-sensor, and is durable and reliable even under adverse environments. We have excellent products that have high properties and can be manufactured at low cost.
Depending on the application, it can fully perform its functions, but when higher precision is required in all three dimensions, it has the disadvantage that it is unable to determine the direction because there is only one touch sensor. are doing.

(Means to solve the problem) In order to solve these problems, the present invention has nine aspects.

This sensor uses a plurality of touch sensors, for which a utility model application has already been filed in Utility Model Application No. 54-179088, and has a configuration in which the detection fingers are regulated and operated in each required direction. As a result, the direction of displacement can be reliably determined, and displacement in any direction can be detected uniformly and with high accuracy.

That is, in the present invention, as shown in FIGS. 1 to 5, a shaft 3 having a detection finger 2 at one end is inserted into a main body 1 having a completely sealed structure, and a sensor 5 is inserted into the rear end with a return spring 4 interposed therebetween. The guide shaft 6 is disposed so as to be inserted into the guide shaft 6, and two pairs of pivots 8 and pivot bearings 9 are provided at right angles to the guide shaft 6 and the bearing 7 provided on the outer periphery of the guide shaft 6.

Further, in the rear row, two pairs of roller guides 11 press against the guide shaft 6 from four directions with a spring 10 interposed between them and the main body 1, and furthermore, in the rear row, two pairs of roller guides 11 fixed to the main body 1 are placed in pressure contact with the guide shaft 6 from four directions. The sensors 12 are arranged so as to be operated by the rotation of the guide shaft 6 in four directions, and a rubber boot 13 is provided on the protruding portion of the shaft 3.

(Function) When the detection finger 2 is displaced in the Z direction, the rear end of the shaft 3 operates the sensor 5, outputs a displacement signal to a control circuit (not shown), and when the displacement is removed, the detection finger 2 O is returned to the original position by the return spring 4. Next, the detection finger 2 moves to x, x', and Y, Y'
When displaced in each of the Z directions, the guide shaft 6 rotates in each direction using the pivot 8 and the pivot bearing 9 as fulcrums, allowing the opposing sensor 12 to operate and output a displacement signal. Once the displacement is removed.

The roller guide 11 acts and the detection finger 2 returns to its original position.

(Embodiment) Next, a displacement detection touch sensor according to an embodiment of the present invention will be explained in detail based on the drawings.

FIG. 1 is a front sectional view showing the configuration of a displacement detection touch sensor according to an embodiment of the present invention, and FIG. 2 is a left side view thereof.

Figure 3 is a view from arrow A in Figure 1↓ showing the configuration of the rotation mechanism, Figure 4 is a view from arrow B in Figure 1 showing the configuration of the balance mechanism, and Figure 5 is the configuration of the displacement detection mechanism. FIG. 2 is a view taken along arrow C in FIG. 1.

In the displacement detection touch sensor according to the embodiment of the present invention, a shaft 3 having a detection finger 2 at one end is connected directly to a guide shaft 6 having a sensor 5 at its rear end via a return spring 4 in the central axis direction of a body 1 having a sealed structure. A pair of first pivot bearings 9α support a pair of first pivots 8α and 8h embedded in both outer surfaces of the square guide shaft 6, in which a displacement detection shaft mechanism formed by movably inserted is disposed. and 9h, and a pair of second pivots 8° and 8d located perpendicular to the first pivots 8α and 8b. It is equipped with a rotating mechanism consisting of a pair of supporting second pivot bearings 9c and 9d, and in the rear row is provided with a rotatable mechanism on the four outer surfaces of the guide shaft 6 via springs 10α, LOh 10c and 10d. Contacting roller guide 1
A balance mechanism consisting of 1α 11h11c and a lid is further fixed to the inner surface of the main body 1 in the rear row.

A displacement detection mechanism consisting of sensors 12α, 12A, 12c and 12d provided on four outer sides of the guide shaft 6 facing each other is provided with a rubber boot 13 at a portion where the shaft 3 protrudes from the main body 1.

The present invention is not necessarily limited to displacement detection in three-dimensional directions, and can be configured to suit the purpose by removing sensors corresponding to unnecessary dimensions or directions. For example, Y.

If only the y', x, and x' directions are required, the guide shaft 6 containing the sensor 5 can be removed, and the Z direction can be removed.

If only the Y, Y'Z directions are required, the sensors 12c and 12d may be removed.

The operation of the embodiment of the present invention configured as described above will be explained. First, when the detection finger 2 is displaced in the Z direction, the shaft 3 moves linearly inside the guide shaft 6 due to an external force, operating the sensor 5 and outputting a displacement signal to a control circuit (not shown).

When the external force due to displacement is removed, the return spring 4 acts to return the detection finger 2 to its original position.

Next, when the nine detection finger 2 is displaced in the Y direction, the guide shaft 6 rotates around the second pivots 8c and 8d, operating the sensor 12α and outputting a displacement signal. When the external force due to displacement is removed, the force of the spring 10z is applied to the guide shaft 6 via the roller guide 11α.

The detection finger 2 returns to the position where equilibrium is maintained with the opposing spring 10b, that is, the original position.

When the guide shaft 6 rotates or returns to its original position, the other pair of roller guides 11c and 11d roll on both sides of the guide shaft 6 to keep the springs 10c and 10d at the same position.

Similarly, when the detection finger 2 is displaced in the Y' direction, the guide shaft 6 moves to the pivots 8c and 8d.

When the guide shaft 6 rotates about the pivots 8α and 8b and receives the sensor 12b in the X direction, the guide shaft 6 rotates about the pivots 8α and 8b, and when it receives the sensor 12c in the X/direction, the sensor 12d is similarly operated and displaced. Output a signal. When the force due to displacement is removed from the detection finger 2, the roller guides 11α, 11h, 11c and lid
The actions of a10h10c and 10d act on the guide shaft, respectively, to return the detection finger 2 to its original position.

In this case as well, the vertical and horizontal rotations are regulated in a fixed direction by the pivots 8α 8h and 8° 8d and the pivot axes 9α 9b and 9c 9d, regardless of the position and angle of the force acting on the detection finger 2. Direction is completely determined.

The main body 1 of the present invention has a sealed structure, and from this main body 1 there is a shaft 3.
The protruding rotating part is equipped with a rubber boot 13, so it is completely dustproof and waterproof, and can withstand use in harsh environments. Since it is installed internally, it has sufficient strength.

(Effects of the Invention) As described above, according to the present invention, since direction discrimination is reliable, multi-dimensional detection can be performed with one detection finger.

Displacement in multiple directions can be detected with extremely high accuracy.
Since the detection finger is rod-shaped, it is possible to detect displacement in a narrow place, and the structure allows sensors to be installed individually in each direction even when multidimensional and multidirectional displacement detection is not required. Sensors can be installed as needed, and therefore, the price can be set according to the direction of displacement detection required, so unnecessary expenses can be eliminated.

In addition, the built-in sensors can be attached and detached individually, making maintenance and inspection easier, reducing maintenance costs.The body is strong, dust-proof, and waterproof, making it suitable for use in adverse environments. It has many excellent effects such as being durable.

[Brief explanation of the drawing]

FIG. 1 is a sectional front view showing the configuration of a displacement detection touch sensor according to an embodiment of the present invention. FIG. 2 is a left side view showing the configuration of a displacement detection touch sensor according to an embodiment of the present invention. FIG. 3 is a view taken along arrow A in FIG. 1, showing the configuration of the rotating mechanism according to the embodiment of the present invention. FIG. 4 is a view taken along arrow B in FIG. 1, showing the configuration of the balance mechanism according to the embodiment of the present invention. FIG. 5 is a view taken along arrow C in FIG. 1, showing the configuration of the displacement detection mechanism according to the embodiment of the present invention. 1... Main body, 2... Detection finger, 3... Axis, 4
...Return spring, 5.12α, 12h, 12c
, 12d,...sensor, 6...guide shaft, 7
...Bearing, 8a, 8h, 8c, 8d...
Pivot 9a, 9A, 9c=9cf" Pivot bearing, 10α, IOb, 10cm10d...Spring, ILz, Ilb, 11(?, 1lcl"
Guide roller 13...Rubber boots patent applicant Metrol Co., Ltd. Qi 1! ! 1 book 2 pages

Claims (2)

[Claims] (1) A main body with a sealed structure, a shaft having a detection finger installed inside the main body at one end,
A displacement detection shaft mechanism including a rectangular guide shaft that is inserted through the shaft so as to be freely movable in a linear manner, a sensor at the rear end of the guide shaft that detects displacement in the axial direction, and a return spring that returns the shaft to its original position. , a pair of first pivots embedded in both outer sides of the guide shaft, a pair of first pivot bearings that rotatably support the pivots, and a pair of first pivot bearings that hold the pivot bearings and are perpendicular to the first pivots. a pair of second pivot bearings that rotatably support the second pivot and are held in the main body; A rotation mechanism that rotates in four directions contacts the four outer surfaces of the guide shaft via a spring, and its rolling provides position regulation, rotation regulation of the displacement detection means, and return force to the original position. A balance mechanism consisting of four roller guides, and four sensors installed inside the main body and facing each of the four sides of the guide shaft to detect displacement by rotation of the guide shaft of the displacement detection mechanism. A displacement detection touch sensor comprising a displacement detection mechanism. (2) The displacement detection touch sensor according to claim (1), wherein the displacement detection axis mechanism and the displacement detection mechanism have four or less sensors.