JPH0618241Y2 - Hole position measuring device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hole position measuring device.

2. Description of the Related Art For example, in order to fix an accessory such as a lamp to a vehicle body of an automobile, a hole for inserting a screw is formed in the vehicle body, but if the position of the hole is incorrect, the accessory cannot be properly attached. . For this reason, it is necessary to measure the position of the hole when there is a problem in the installation of the accessory or at other appropriate times, and to take measures against it when the hole position is not appropriate.

As a conventional hole position measuring device, for example, the actual open position Sho 59-9
Although disclosed in Japanese Patent No. 8304 or Japanese Utility Model Laid-Open No. 61-123906, all of them are configured to measure the shift amount of the hole position by reading a scale. However, since this scale is very fine, it was not easy to read it, and the efficiency of measurement work was inevitably low.

It is an object of the present invention to provide a hole position measuring device which can eliminate the above-mentioned conventional drawbacks, remarkably improve the work efficiency at the time of hole position measurement, and further improve the measurement accuracy.

In order to achieve the above-mentioned object, the present invention provides a positioning unit mounted at a predetermined position of an object to be measured, a support unit, and
A gauge pin unit that is separate from the unit, wherein the support unit is fixedly fitted and held in the holding portion of the positioning member, and in the held state, the measurement formed on the object to be measured. Between a frame in which a hole is formed at a position corresponding to the hole to be formed, a magnet fixed around the hole of the frame, a closed position for covering the hole of the frame, and an open position for opening the hole. A plate pivotally attached to the frame and a transparent hole fixed to the plate and formed in the plate, and corresponding to the hole of the frame with the plate occupying the closed position. The gauge pin unit has a convex lens disposed in a position, and the gauge pin unit is fitted to a hole to be measured through a hole of the frame in a state where the plate is brought to the open position, and the gauge pin unit. A core rod that is slidably mounted in the axial direction, a protrusion that is configured integrally with the core rod, and that protrudes toward the convex lens that is fixed to the frame that is brought to the closed position, and the core rod. And a base member made of a magnetic material that is fixed on the magnet and is attracted by the magnetic force when the gauge pin is fitted in the hole to be measured, and is fitted into the hole to be measured. The size of the hole is set so that the gauge pin does not come into contact with the frame portion that defines the hole of the frame, and the convex lens is provided with a scale for indicating the position of the protrusion with respect to the positioning member. We propose a hole position measuring device.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a rear lamp mounting hole 8 formed in the vehicle body 7,
FIG. 3 is a perspective view showing an example in which the positions of 9, 10, 11, and 12 are measured by the hole position measuring device 1 according to the present invention. The measuring device 1 has a positioning member 2 in the shape of a frame or any other suitable form, and the member 2 has a suitable number of three holding parts 20, 21, 22 in the example shown in the figure. have. A gauge unit 23, which will be described later, is held by these holding portions 20, 21, 22.

When measuring the hole position, the positioning pins 13 and 14 projecting from the positioning member 2 are used to form the holes 8 to 12 formed in the vehicle body 7.
By fitting into the reference holes 8 and 9 among them, the positioning member 2 is mounted at a predetermined position of the vehicle body 7 as the object to be measured as shown in FIG.

Next, the above-mentioned gauge unit 23 is fitted into each of the holding portions 20, 21, 22 to hold it. FIG. 2 shows a state in which the gauge unit 23 is already held by one holding portion 20, and the gauge unit is not yet attached to the other holding portions 21 and 22, and FIG. 3 shows that the gauge unit is not yet fitted. The state of the holding part when not doing is shown.

As shown in FIG. 5, the gauge unit 23 comprises a support body unit 24 and a gauge pin unit 25 which is a separate body from the support body unit 24.
Fit into the holding part of the. 4 shows a state in which the support unit 24 is attached to the holding portion 20, and FIG. 5 shows a state in which the entire gauge unit 23 is attached to the holding portion 20.

As is apparent from FIGS. 4 and 5, the support body unit 24 is fixedly fitted and held in the holding portion 20 of the positioning member 2 and has a hole 27 formed in the center thereof.
A plate 29 pivotally attached to the frame 27 via a hinge 28 so as to be rotatable in the direction of arrow A;
It has a convex lens 31 fixed to the plate 29 so as to cover the see-through hole 30 formed in and a magnet 32 fixed around the hole 26 of the frame 27.

The hole 26 of the frame 27 is formed at a position corresponding to the hole 10 to be measured formed in the vehicle body 7, which is the object to be measured, with the frame 27 being held by the positioning member 2. Is rotatably supported between a closed position for covering the hole 26 of the frame 27 as shown by a solid line in FIG. 4 and an open position for opening the hole 26 as shown by a chain line.
It is pivotally connected to 7. Further, the convex lens 31 is the plate 2
9 is located at a position corresponding to the hole 26 of the frame 27 with the closed position.

As shown in FIG. 6, the convex lens 31 is provided with graduations 33 formed by concentric circles at equal intervals and lines extending in the radial direction from the center of the circles. Instead of directly forming the scale on the convex lens 31,
The scale may be formed on the lens 31 by sticking a transparent film on which the scale is formed to the convex lens 31.

In the holding portion 20, the arrow B (second
The latch plate 35 which can be rotated in the direction is pivotally attached (the other holding portions 21 and 22 are also the same).
5 is rotated as shown by the chain line in FIG. 2, the frame 27 of the support unit 24 is fitted to the holding portion 20 as shown in FIG. 4, and then each latch plate 35 is moved to the position shown by the solid line in FIG. The support unit 24 can be held by the holding unit 20 by rotating the support unit 24. At this time, the right end of the locking pin 38 which penetrates the side wall 36 of the frame 27 and is biased to the right in FIG.
It is pressed against the inner peripheral surface of the holding portion 20. As a result, the side wall surface 39 on the opposite side of the frame 27 is brought into pressure contact with the inner peripheral surface of the holding portion 20 opposed thereto, the support unit 24 is positioned at a predetermined position of the holding portion 20, and the frame 27 is held by the holding portion. It is fixedly attached to 20 and held.

Next, the plate 29 is rotated about the hinge 28 to bring it to the open position shown by the chain line in FIG. 4, and in this state, the gauge pin unit 25 separate from the support unit 24.
Through the hole 26 of the frame 27,
A hole 10 to be measured formed in the vehicle body 7 as shown in FIG.
Then, the plate 29 is rotated again to the closed position. Fifth
The figure shows the state at this time.

In addition to the above-described gauge pin 40, the gauge pin unit 25 includes a core rod 41 slidably incorporated in the pin 40 in the axial direction thereof as indicated by an arrow C, and a base member 42 to which the core rod 41 is fixed. And the protrusion 4 protruding from the base member 42.
3 and the tip of the protrusion 43 is located on the central axis of the gauge pin 40. The protrusion 43 is formed integrally with the core rod 41, and the protrusion 43 and the core rod 41 may be integrally formed by one member. The protrusion 43 projects toward the convex lens 31 fixed to the frame 27 brought to the closed position.

The base member 42 is made of a magnetic material, and the gauge pin 40 is formed as a taper pin having a thin tip, so that the pin 40 can be easily fitted into the hole 10.

Gauge pin unit 25, and therefore its gauge pin 4
Since 0 is a body separate from the support unit 24 and can move freely with respect to the unit 24, when the gauge pin 40 is inserted into the hole 10, the pin 40 moves freely in the horizontal direction in FIG. Match the hole 10. That is, the size of the hole 26 is set so that the gauge pin 40 fitted in the hole 10 to be measured does not come into contact with the frame portion defining the hole 26 of the frame 27.

When the gauge pin 40 is fitted into the hole 10 to be measured, the base member 42 is placed on the magnet 32, and the base member 42 made of a magnetic material is attracted and fixed by the magnetic force of the magnet 32.

The gauge pin 40 is slidable in the axial direction with respect to the core rod 41, and the gauge pin 40 and the base member 4 are
Since the compression coil spring 44 is press-fitted between the gauge pin 40 and the hole 2, even if the distance between the positioning member 2 and the hole 10 is changed due to a difference in the model of the vehicle body 7 or the like, the gauge pin 40 can be surely opened. It can be fitted into 10 without rattling.

As described above, by fitting the gauge pin 40, which is movable in position with respect to the support unit 24, in other words, the positioning member 2, into the hole 10 to be measured, the gauge pin 4
0 can be matched with the position of the hole 10. Therefore, if the position of the tip of the protrusion 43 and the scale 33 at this time are visually observed from the outside of the convex lens 31, the relative positional accuracy of the hole 10 with respect to the positioning member 2 can be determined. You can know it immediately and accurately. That is, if the position of the hole 10 is correct, the tip end of the protrusion 43 has a scale 33 as shown by reference numeral X1 in FIG.
Although it is located at the center of the hole, if the position of the hole 10 is displaced as shown by the chain line in FIG. 5, the position of the protrusion 43 is also displaced, and its tip position is located as shown by X2 in FIG. It can be seen that the position of the hole 10 is displaced by a. If the interval between the circular scales is set to 1 mm, for example, a = 2.5 mm in the example of FIG. 6, and the positions of the holes 10 are displaced by this amount. Further, the deviation direction can be known from the scale of the line extending in the radial direction. The position of the projection 43 with respect to the positioning member 2 can be known by the scale 33 formed on the convex lens 31 in this way, and the position of the hole 10 can be accurately measured by this. that time,
It does not damage the car body. The gauge unit 23 can be attached to the other holders 21 and 22 in exactly the same manner to measure the positional accuracy of the holes 11 and 12.

At the time of measuring the hole position described above, the tip of the protrusion 43 and the scale 33 can be magnified and visually observed by the convex lens 31, so that the measurement work can be performed accurately and easily. Moreover, since the scale 33 and the projection 43 are visually observed through the convex lens 31, the distance a between the center of the scale 33 and the tip position of the projection 43 is a.
Can be directly viewed, and the displacement of the position of the hole 10, 11 or 12 can be directly read. As a result, the efficiency of measurement work can be further enhanced.

Further, since the convex lens 31 is fixed to the plate 29 pivotally attached to the frame 27, the plate 2
By rotating 9 to the open position, the gauge pin 40 can be fitted into the hole 10 to be measured without being disturbed by the convex lens 31.

Moreover, since the base member 42 of the gauge pin unit 25 is attracted and fixed to the magnet 32 of the support unit 24 during the measurement of the hole position, the projection 43 swings with respect to the scale 33 formed on the convex lens 31. The hole position measurement accuracy can be further improved.

Further, if the plate 29 is made of a transparent plate such as an acrylic resin plate or a glass plate, it is convenient because the projection 43 can be easily seen from the outside. If the slits 45 are formed in the magnet 32, the base member 42 can be strongly attracted in the vertical direction in FIG. 5, while the attraction force in the horizontal direction can be made relatively weak. Thereby, the base member 42 can be firmly fixed in the vertical direction, and the gauge pin unit 25 can be easily moved in the horizontal direction according to the position of the hole 10 to easily fit the gauge pin 40 into the hole 10.

If the shape of the holes 8 to 12 to be measured is not circular but is, for example, square or elliptical, the positioning pins 13 and 14 and the gauge pin 40 having a cross-sectional shape corresponding thereto are used, and these pins are loose. It suffices to be able to fit into the hole without sticking.

It is obvious that the measuring device according to the present invention can also be used for measuring the hole position of various measured objects other than the vehicle body.

Effect According to the present invention, since the object to be measured is not scratched and the scale and the projection can be magnified and viewed by the convex lens, the position of the hole can be accurately and quickly measured. Further, since the convex lens is fixed to the plate pivotally attached to the frame, by opening the plate to the open position,
The gauge pin can be fitted into the hole to be measured without any interference by the convex lens. Further, since the scale and the projection can be directly viewed through the convex lens, the shift of the position of the hole can be directly read, and the measurement work can be performed more efficiently. Furthermore, since the base member of the gauge pin unit is attracted and fixed to the magnet of the support unit when measuring the hole position, the protrusion does not swing against the scale formed on the convex lens, and the hole position measurement The accuracy can be further increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing a hole formed in an automobile body and a hole position measuring device according to the present invention, and FIG. 2 is a case where a positioning member is attached to the vehicle body and a gauge unit is attached to one holding portion thereof. FIG. 3, FIG. 3 is a cross-sectional view of the holding portion to which the gauge unit is not yet attached, FIG. 4 is a cross-sectional view similar to FIG. 5 when only the support unit is attached, and FIG. V in FIG. 2 after the whole is attached
6 is a cross-sectional view taken along the line V, and FIG. 6 is a view of the gauge unit as viewed from above in FIG. 1 ... Hole position measuring device, 2 ... Positioning member 10, 11, 12 ... Hole 20, 21, 22 ... Holding part 24 ... Support unit 25 ... Gauge pin unit, 26 ... Hole 27 ... ... frame, 29 ... plate 30 ... see-through hole, 31 ... convex lens 32 ... magnet, 33 ... scale 40 ... gauge pin, 41 ... core rod 42 ... base member, 43 ... protrusion

Claims (1)

[Scope of utility model registration request] 1. A positioning unit mounted on a predetermined position of an object to be measured, a support unit, and a gauge pin unit separate from the unit, wherein the support unit is the positioning unit. A frame that is fixedly fitted and held in the holding portion of the member, and in the holding state, a frame in which holes are formed at positions corresponding to the holes to be measured formed in the DUT, and around the holes of the frame. A fixed magnet, a plate pivotally attached to the frame so as to be rotatable between a closed position that covers the hole of the frame and an open position that opens the hole, the plate fixed to the plate, and the plate And a convex lens disposed at a position corresponding to the hole of the frame in a state where the plate occupies the closed position, the gauge pin unit brings the plate to the open position. With the The gauge pin fitted into the hole to be measured through the hole of the frame, the core rod slidably incorporated in the gauge pin in the axial direction thereof, and the core rod which are integrally formed, and can be used even in the closed position. A protrusion protruding toward the convex lens fixed to the laid frame and fixed to the core rod, and when the gauge pin is fitted into the hole to be measured, the gauge pin is placed on the magnet and its magnetic force A base member made of a magnetic material to be attracted, and the size of the hole is set so that the gauge pin fitted into the hole to be measured does not come into contact with the frame portion that defines the hole of the frame. The hole position measuring device is provided with a scale for indicating the position of the protrusion with respect to the positioning member.