JPH064242Y2 - Tape measure digital measurement display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention converts the moving motion of a long member for winding and drawing into rotary motion of an encoder plate, and converts the rotary motion of the encoder plate into a digital pulse signal. The present invention relates to a tape measure type digital measuring and displaying device for measuring and displaying the movement amount of the elongated member by D-conversion, and more specifically, to one of two side surfaces of the casing of the tape measuring type digital measuring device which are perpendicular to each other. Also relates to a digital measurement display to which a display unit can be attached.

[Prior art]

A display portion is fixedly installed in the casing of this type of tape measuring type digital measuring display. Since it is necessary to connect the display section and the electronic circuit section in the casing with an electric wire cord, a hole for wiring is transparently provided in the display section mounting section of the casing,
A screw hole for mounting the display unit is drilled. In this kind of tape measuring type digital measuring display, a casing is usually attached to a stationary part or a moving part of a machine tool, and a tip of an elongated member is attached to the moving part or the stationary part. In this case, it is desirable that the extending portion of the elongated member from the casing move linearly in a predetermined angle direction with respect to the casing. With respect to the side surface of the casing from which the elongated member is extended, the linear moving direction of the extending portion of the elongated member is usually
It is set to be vertical. In this way, unless the angle of the extending direction of the elongated member with respect to the casing is specified as a predetermined angle, that is, the vertical direction, when the elongated member is paid out of the casing or rolled into the casing, the guide provided on the casing and the length A frictional force is generated between the long member and the long member, and the long member cannot move smoothly.

[Problems to be solved by the invention]

As described above, as the moving direction of the long member with respect to the casing is regulated, the mounting angle of the casing with respect to the machine tool is also regulated, and when the casing is mounted on the machine tool, the display section is viewed from the operator side. It may be in a difficult position. For example, when the display unit is attached to the upper surface of the casing, you want to face the display unit on the upper surface of the casing to the operator, but the front surface of the casing faces the operator, and the display unit does not correspond to the operator. It often happens that it is located at an angle that is difficult to see. In order to deal with such a situation, conventionally, the manufacturer has prepared a plurality of types of casings having different mounting positions of the display unit. However, in order to prepare multiple types of casings with different display mounting positions, it is necessary to prepare multiple types of casing manufacturing molds for each different display mounting position, which increases the cost of this mold. There was a defect. The present invention aims to eliminate the above defects.

[Means for solving problems]

According to the present invention, the end of the elongated member 20 wound inside the casing 2 is arranged outside the casing 2, and the elongated member 20 is
Rotating body 4 with the amount of movement in the linear direction
The rotation amount of the rotating body 4 is converted into the rotation amount of
In the tape measure type digital measuring display for displaying digitally on the display 8, a cover 38a of the display 38 is provided on each of two side walls of the casing 2 which are perpendicular to each other.
Mounting recesses 36 and 46 for fitting the mounting recesses are formed, and wiring holes 42 and 47 are provided through the mounting recesses 36 and 46, respectively, and one of the mounting recesses 36 and 46 is provided. The cover 38a of the display unit 38 is attached, and the mounting recess 3
A cover 48 for closing the holes 36, 46 is attached to the other 46 of 6, 6, 46.

〔Example〕

Hereinafter, the structure of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

2 is a casing composed of a box portion 2a and a lid portion 2b,
The lid portion 2b is detachably fixed to the box portion 2a with a screw. A rotating body 4 is rotatably supported by a shaft 6 in the box portion 2a, and a reel 8 and an encoder plate 10 composed of a known slit plate are fixed to the rotating body 4. Reference numeral 12 is a pair of light emitting elements, and 14 is a pair of light receiving elements, which constitute an optical photodetector. It is fixed to 2a. The rotating body 4 is biased in a constant rotation return direction by a helical spring built in a spring holder 16. A plurality of elongate members 20 made of a flexible wire rope are wound around the reel 8 and the rear end thereof is fixed to the reel 8. 22
Is a substrate fixed to the box portion 2a, on which an electronic circuit is mounted. 24 is the reel 8 on the side wall of the box 2a
Is a tube portion formed in a tangential direction to the outer periphery of, and a tubular guide 26 is slidably fitted and arranged therein. A coil spring 28 is disposed between the outer peripheral surface of the small diameter portion of the guide 26 and the inner peripheral surface of the tube portion 24, and the stopper ring locked near one end of the guide 26 by the elastic force of the coil spring 28. 30 is connected to one end surface of the pipe portion 24. A member 32 having a small hole for guiding a long member is fitted and fixed to the inner peripheral surface of the distal end of the guide 26. The elongated member 20 is slidably inserted and arranged in the guide 26 and the small hole of the member 32, and its tip is guided to the outside of the casing 2. A fitting 34 is fixed to the tip of the elongated member 20.
The guide 26 is positioned perpendicular to the right side surface of the casing 2. Reference numeral 36 denotes a mounting recess formed on the upper surface of the casing 2 so as to correspond to the cover 38a of the display unit 38, and the lower portion of the cover 38a is fitted into the recess 36. The screw rod inserted into the screw insertion hole of the cover 38a is
The display portion 38 is detachably fixed to the upper surface of the casing 2 by being screwed into two screw holes 40 formed in the recess 36 on the upper wall of the casing 2. A hole 4 for wiring is provided on the upper wall of the casing 2.
2 is transparently provided, and the display unit 3 is provided through a cord passing through the hole 42.
6 is connected to the electronic circuit of the substrate 22 and the connector 44 in the casing 2. The front wall of the casing 2, that is, the lid plate 2b, has a mounting recess 46 having the same size as the recess 36.
And a wiring hole 47 is provided in the front wall of the casing 2 in the recess 46. The recess 46
A cover 48 is fitted to the cover 48, and holes are formed at the four corners of the cover 48 in the same arrangement size as the arrangement size of the screw insertion holes of the display cover 38a, and the screws 50 inserted into the holes are The cover 48 is located in the recess 46 and is screwed into the same hole formed in the cover plate 2b, whereby the cover 48 is detachably fixed to the cover plate 2b. When the cover 48 is fitted into the mounting recess 46 or 36, the upper surface of the cover 48 and the wall surface of the casing 2 are set to be flush with each other.

[Action]

Next, the operation of this embodiment will be described. As shown in FIG. 4, on the side surface of the stationary portion 52 of a machine tool, such as a drilling machine,
The upper surface of the casing 2 is fixed so as to face the operator, and the attachment fitting 34 is connected to the moving portion 54 via the bracket 56. In this case, the linear movement direction of the elongated member 20 must be set to be perpendicular to the elongated member feeding side surface of the casing 2, that is, the right side surface in FIG. In FIG. 4, the display unit 38 is set at a position facing the operator. However, if there is no space to attach the casing to both sides of the stationary part 52 of the drilling machine, and the casing 2 cannot be attached to the machine tool with its upper surface facing the operator, the display unit 38 will be displayed to the operator. I will not meet each other. Then, the display unit 38 becomes extremely difficult to see. In the case where the front surface of the casing 2 faces the operator in FIG. 1, the above-mentioned inconvenience can be eliminated by using a measurement display device having a display portion arranged on the front surface of the casing 2. In order to assemble the measurement display unit having the display unit 36 on the front surface of the casing 2, the display unit 36 and the casing 2 can be inserted through the holes 47.
After wiring to the inside, the display cover 38a is fitted into the mounting recess 46 of the front wall of the casing 2, and the cover 38a is fixed to the front wall by screws. On the other hand, the cover 48 is fitted into the recess 36 of the upper surface wall of the casing 2, and the cover 48 is fixed to the upper surface wall by screws. In this way, by using a casing made of one mold, one in which the display portion is provided on one of the two side surfaces of the casing which are perpendicular to each other and one in which the display portion is provided on the other side surface are assembled and manufactured. can do. The operator rotates the handle 58 to position the moving unit 54 at a desired origin, and operates the reset switch here to reset the counter in the electronic circuit in the casing 2 to zero, and the display unit 38 displays. Reset the display to zero. Next, when the handle 58 is rotated to move the moving portion 54 in the vertical direction in the vertical direction in FIG. 4, the elongated member 20 is pulled out from the reel 8 in the casing 2 or is moved to the reel 8. Being caught in the moving part 54
The reel 8 rotates with the movement of. The rotation of the reel 8 causes the rotating body 4 to rotate. The rotational movement of this rotating body 4 is
It is converted into a directional pulse signal by the encoder plate 10 and the optical detector. This pulse signal is processed by an electronic circuit in the casing 2, and the moving amount of the moving portion 54, that is, the moving amount of the elongated member 20 in the linear direction is digitally displayed on the display unit 36. The casing 36 may be attached to the moving part of the machine and the elongated member 20 may be connected to the stationary part of the machine, or the machine for measuring the moving amount using the present invention is not limited to the drilling machine. However, it can be used for digital measurement display of moving parts of other machine tools and other machines.

〔effect〕

As described above, the present invention manufactures, from a casing made of one mold, one in which a display portion is provided on one of two side surfaces that are perpendicular to each other and one in which a display portion is provided on the other side surface. As a result, it is possible to reduce the manufacturing cost of the casing mold and to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 shows a preferred embodiment of the present invention, FIG. 1 is an external view, FIG. 2 is a front view showing the inside of a casing, FIG. 3 is a sectional view, and FIG. 4 is a front view showing a state of use. . 2 ... Casing, 4 ... Rotating body, 6 ... Shaft, 8 ... Reel, 10 ... Encoder, 12 ... Light emitting element, 14 ...
... light receiving element, 16 ... spring holder, 18 ... spiral spring, 20 ... long member, 22 ... substrate, 24 ... pipe part, 26 ... guide, 28 ... coil spring, 30
...... Stopper ring, 32 ...... Member, 34 ...... Mounting fitting, 36 ...... Mounting recess, 38 ...... Display part, 38 a ...... Cover, 40 ...... Screw hole, 42 ...... hole, 44 ...... Connector, 46 ...... Mounting recess, 47 ...... Hole, 48 cover, 50
……screw.

Claims (1)

[Scope of utility model registration request] 1. A long member 2 wound in a casing 2.
The front end of 0 is arranged outside the casing 2, the linear movement amount of the elongated member 20 is converted into the rotation amount of the rotating body 4 built in the casing 2, and the rotation amount of the rotating body 4 is displayed. In a tape measure type digital measurement display adapted to display digitally on the part 38, the cover 3 of the display part 38 is provided on each of two side walls of the casing 2 which are perpendicular to each other.
Mounting recesses 36 and 46 for fitting 8a are bored, and wiring recesses 42 and 47 are provided in the mounting recesses 36 and 46, respectively.
The cover 38a of the display unit 38 is attached to one of the mounting recesses 36 and 46, and the holes 36 and 4 are attached to the other mounting portions of the mounting recesses 36 and 46.
A tape measure type digital measurement display, characterized in that a cover 48 for closing 6 is attached.