JPS6131523Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a board mounting position adjusting device for mounting a board in a predetermined position of a frame in a position-adjustable manner.

Prior Art Conventionally, in printers and the like, when attaching a substrate supporting a light receiver to a predetermined position of a frame supporting a light emitter, etc., multiple mounting holes must be precisely matched to the predetermined positions of both by precision machining. form,
These mounting holes were used to secure the two to each other with bolts, nuts, etc. However, this conventional configuration not only increases manufacturing costs because it requires high processing precision, but also has the drawback that fine adjustment of the mounting position of the board is impossible.

Purpose This invention was made to solve the above-mentioned problems, and the purpose is to be able to reliably mount the board at a predetermined position on the frame, to make it easy to adjust the mounting position, and to be inexpensive. An object of the present invention is to provide a mounting position adjustment device for a board that can be manufactured in a number of steps.

Embodiment A first embodiment in which this invention is applied to the mounting structure of a light emitting/receiving device of a printer will be described below with reference to FIG. A pulse motor 3 for character selection is fixed to a part of 1 by suitable fixing means (not shown). A type foil 4 is attached to one end of the motor shaft 3a of this pulse motor 3.
is fixed to the type foil 4, and a plurality of spokes 6 having type elements 5 at their tips are arranged radially. Then, by the rotation of the pulse motor 3, a printing hammer (not shown) is operated with a predetermined type element 5 being selectively arranged at a position corresponding to the platen 2, and a printing paper (not shown) on the platen 2 is actuated. It is now possible to print on the

A disk-shaped encoder 7 is fixed to the other end of the motor shaft 3a, and a plurality of slits 8 corresponding to the type elements 5 are provided near the periphery of the encoder 7 on the same circumference. A light emitter 9 is provided in the frame 1 above the pulse motor 3 so as to face the slit 8 of the encoder 7. It's starting to feel like it's being blocked out. A substrate 10 is attached to the frame 1 in front of the encoder 7 so that its position can be adjusted, and a light emitter 9 is inserted into the inner surface of the substrate 10 through a slit 8 of the encoder 7.
A photoreceiver 11 is provided to detect light from.

Therefore, when a predetermined printing signal is input, the type foil 4 is rotated by the pulse motor 3, and the encoder 7 is also rotated, so that the light of the light emitter 9 is intermittently blocked between the slits 8 of the encoder 7. is sensed by the light receiver 11 to select a predetermined type element 5, and the selected type element 5
By this, printing is performed on the printing paper on the platen 2.

Next, to explain in detail the mounting configuration of the board 10 to the frame 1, as shown in FIGS. 2 to 4, a pair of first elongated holes 12 extending in the left-right direction are provided in the upper left side and lower right side of the frame 1. A pair of second elongated holes 13 extending in the vertical direction are formed in the substrate 10 at positions facing the first elongated holes 12 formed therein. A pair of spacers 14 are arranged between the frame 1 and the substrate 10, a screw hole 15 is formed in the center thereof, and a flange portion interposed between the frame 1 and the substrate 10 is provided at the periphery. 16 are formed.

A pair of left and right side arc-shaped first protrusions 17 are formed on the end face of the flange 16 on the side facing the frame 1, and are fitted into the elongated holes 12 on the frame 1 so as to be movable only in the left and right direction. It is becoming more and more like this. A pair of upper and lower side arcuate second protrusions 18 are formed on the end surface of the flange 16 on the side facing the substrate 10, and are movable only in the vertical direction into the second elongated hole 13 of the substrate 10. It is designed to be mated.

The first and second protrusions 17, 18 of the spacer 14 are inserted into the first and second slots 12, 1
3, and the flange portion 16 of the spacer 14 is fitted to the
With the spacer 1 interposed between the base plate 10 and the frame 1, a bolt 19 as a second clamping member is inserted from the outer surface of the base plate 10 through a flat washer 20.
4, and a nut 22 as a first clamping member is screwed onto the tip of a bolt 19 protruding from the outer surface of the frame 1, via a flat washer 20 and a spring washer 21, so that the frame 1 and the substrate 10 can be clamped and fixed between the flange 16 of the spacer 14 and the bolt 19.

Therefore, the assembly and adjustment method for positioning and fixing the board 10 at a predetermined position on the frame 1 will be explained in detail. First, as shown in FIGS. It is attached to the frame 1, and the bolts 19 and nuts 22 are loosely tightened to hold them in a temporary state. Thereafter, when the bolt 19 is loosened, the nut 22 is moved forward together with the bolt 19 by the action of the spring washer 21, and the frame 1 is strongly clamped between the flange 16 of the spacer 14 and the nut 22. , the clamping state of the board 10 between the flange 16 of the spacer 14 and the head of the bolt 19 is loosened. Therefore, in this state, by moving the substrate 10 in the vertical direction along the second protrusion 18 of the spacer 14, the best sensitivity point in the vertical direction of the light receiver 11 can be checked.

Then, when the bolt 19 is tightened again at the best sensitivity point, the flange 16 of the spacer 14 and the bolt 1
The board 10 is strongly clamped between the head of the spacer 14 and fixed in the vertical direction, and the nut 22 is moved rearward together with the bolt 19, and the flange 16 of the spacer 14 and the nut 22 are moved together. The clamping state of the frame 1 between the two is loosened. By moving the substrate 10 in the left-right direction in this state, the best sensitivity point of the light receiver 11 in the left-right direction can be checked. Thereafter, by tightening the nut 22, the frame 1 is strongly clamped between the flange 16 of the spacer 14 and the nut 22, and the board 10 is positioned and fixed in the left-right direction.

Therefore, by the above-described operation, it is possible to check the best sensitivity points in both the vertical and horizontal directions of the light receiver 11, and to easily and reliably position and fix the substrate 10 to the frame 1.

Another Embodiment Next, a second embodiment embodying this invention will be described as a fifth embodiment.
Explaining according to the diagram, in this example,
Threaded portions 23 are formed protruding from both end surfaces of the spacer 14, and a pair of nuts 22 and 24 as first and second clamping members are provided correspondingly, and a spring washer is provided. This embodiment differs from the first embodiment in that there is no difference.

Therefore, both the nuts 22 and 24 hold the spacer 1
With the board 10 temporarily fixed to the frame 1 via the screws 4, loosen one nut 24 to adjust the vertical positioning of the board 10, and tighten the nut 24 to fix the board 10 in the best position. , then loosen the other nut 22 and remove the board 10.
By adjusting the positioning in the left and right direction and tightening the nut 22 to fix the board 10 at the best position, the board 10 can be easily and reliably positioned and fixed at a predetermined position on the frame 1.

Next, a third embodiment embodying this invention will be described with reference to FIGS. 6 and 7. In this embodiment, a through hole 25 is provided in the frame 1, and a circle is formed around the through hole 25. A first long hole 12 extending in an arc shape is formed in the substrate 10, and a pair of first long holes 12 extending in a direction substantially perpendicular to the first long hole 12 are formed in the substrate 10 in correspondence with the through hole 25 and the first long hole 12. This embodiment differs from the previous embodiments in that two elongated holes 13 are formed.

Therefore, in this embodiment, the elongated hole 1 of the frame 1
The board 10 can be rotated along 2, and
The substrate 1 along the second elongated hole 13 on the substrate 10
0 can be moved and adjusted.

Note that this invention is not limited to the above-mentioned embodiments, and may deviate from the spirit of this invention, such as by attaching various devices other than the light receiver to the board, and attaching the board to the frame so that its position can be adjusted. It is also possible to arbitrarily change the configuration of each part to the extent that it does not.

Effects As detailed above, this invention has the excellent effects of being able to reliably mount the board at a predetermined position on the frame, making it easy to adjust the mounting position, and manufacturing at low cost. Furthermore, the mounting position of the board can be adjusted by moving the board in two different directions relative to the frame, and the relative position of the two can be set more accurately.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the mounting configuration of the light emitting and receiving device of the printer, Fig. 2 is an enlarged sectional view showing the first embodiment embodying this idea, Fig. 3 is an enlarged front view of the spacer, The figure is also an enlarged exploded perspective view.
Fig. 5 is an enlarged exploded perspective view showing a second embodiment embodying this idea, Fig. 6 is a front view of a frame in a third embodiment embodying this idea, and Fig. 7 is a front view of the board as well. It is. Frame...1, Board...10, First long hole...
...12, Second long hole...13, Spacer...1
4. Flange portion...16, First protrusion...17, Second protrusion...18, Bolt as second clamping member...19, Nut also...24, First clamping member Natsu as a member...22.

Claims (1)

[Claims for Utility Model Registration] A frame 1 in which a first elongated hole 12 extending in a first direction is formed, and a second elongated hole 13 extending in a second direction different from the first direction is formed. a base plate 10 attached to the frame 1; a flange 16 interposed between the frame 1 and the base plate 10; First and second protrusions 1 fitted into second elongated holes 12 and 13
The frame 1 and the substrate 10 are respectively sandwiched between the spacer 14 having 7 and 18 and the flange 16 of the spacer 14.
First and second clamping members 2 for fixing the substrate 10 to
2, 19, 22, and 24, and the spacer 14 is movable only in the first direction with respect to the frame 1, and only in the second direction with respect to the substrate 10. Features a board mounting position adjustment device.