JPH0447744Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] <Industrial Field of Application> The present invention relates to an assembly structure for an electronic display tube, and more particularly, to an assembly structure for an electronic display tube that automatically assembles the electronic display tube.

<Conventional technology> Conventionally, video tape recorders, CD players,
2. Description of the Related Art Electronic display tubes such as fluorescent display tubes are used in household electrical appliances such as microwave ovens, automobile instrument panels, and the like to display various information. For such electronic display tubes, after inserting the terminals into the holes in the printed circuit board,
There are types that connect electrically by soldering, but as the amount of information displayed has increased, the number of terminals on electronic display tubes has also increased, making it increasingly difficult to insert a large number of terminals directly into holes in the printed circuit board. was difficult.

For example, as shown in FIG. 5, a plate-shaped support surface 32 for mounting an electronic display tube 33 such as a fluorescent display tube, and terminal holding holes for holding a large number of terminals 34 of the electronic display tube 33 are provided. Terminal holding part 3 having
5 and an electronic display tube 33 placed on the support surface 32
There is a fixture 31 that is integrally molded from a synthetic resin material and has a locking piece 36 that elastically engages with the locking piece 36 . This locking piece 36 includes a flexible arm portion 38 erected on the peripheral edge of the support surface 32, and a claw portion 3 formed at the free end of the arm portion 38 so as to protrude inward.
9. An engagement groove 40 is formed in the upper surface of the claw portion 39 and is opened upwardly and inwardly.

The electronic display tube 33 is attached to the fixture 3 by an automatic assembly device.
1, first move the claw member 41 of the assembly robot shown in FIG. Next, the end portion 3 of the electronic display tube 33 is conveyed toward the support surface 32, as shown by the solid arrow in FIG. 6, while being gripped by the grip plate 42 of the assembly robot.
7 does not interfere with the claw portion 39, the claw member 41 is moved in the direction of the broken line arrow, and the arm portion 38 of the locking piece 36 is bent. After placing the electronic display tube 33 on the support surface 32, the claw member 41 is disengaged from the engagement groove 40, so that the electronic display tube 33
3, the claw portion 39 elastically engages, and the electronic display tube 33 is fixed as shown in FIG.

However, in the case of the fixture 31 having the above structure, a step of expanding the locking pieces 36 is required before the step of placing the electronic display tube 33 on the support surface 32, so that the assembly step is delayed. There is a problem that it becomes complicated.

<Problems to be solved by the invention> In view of the problems of the prior art, the main purpose of the present invention is to develop an electronic display tube that can simplify the process of assembling the electronic display tube to a fixture using a carrier. The objective is to provide an assembly structure.

[Structure of the invention] <Means for solving the problem> According to the invention, such an object is to integrate an electronic display tube placed on a support surface of a fixture into a peripheral portion of the support surface. In the assembly structure of the electronic display tube in which the electronic display tube is fixed to the fixture by engaging a locking means provided on the support surface, the locking means is a flexible an arm portion having
A claw protruding inwardly from the arm to engage with the electronic display tube engages with a portion of a carrier for assembling the electronic display tube, thereby expanding the arm outward. This is achieved by providing an electronic display tube assembly structure characterized in that it has an engaging piece integrally formed near the free end of the arm portion so as to open the arm portion.

<Function> In this way, by engaging the locking means with a part of the conveying body for assembling the electronic display tube to the support surface of the fixture, the locking means can be expanded outward at the same time as conveyance. This eliminates the need for a step such as opening the locking means in addition to the step of transporting the electronic display tube toward the support surface.

<Embodiments> The present invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.

Figure 1 shows an electronic display tube fixture 1 based on the present invention.
2 is a perspective view showing a fixture 1 integrally molded from a synthetic resin material. In order to mount an electronic display tube 2 having a flat rectangular parallelepiped shape with glass frames on both the front and back sides, a plate-shaped fixture 1 is used. It has a support surface 3 and a side wall portion 4 formed at the peripheral edge of the support surface 3. An electronic display tube 3 is mounted on one outer wall surface (the front side in the figure) of the side wall portion 4 along the longitudinal direction of the fixture 1.
A terminal holding portion 6 having the same number of terminal holding holes and guide portions is formed in order to hold a plurality of terminals 5 extending from one side edge of the terminal and being arranged at equal pitches along the side edge. has been done.

An L-shaped side wall is integrally formed at one end of the fixture 1 in the longitudinal direction so as to extend the support surface 3 outward by a predetermined amount and cover two sides of the support surface 3. A protective cover portion 7 is provided.
This protective cover part 7 fixes the electronic display tube 2 to the fixture 1.
This is to protect, for example, the protruding portion 8 for gas filling of the electronic display tube 2 when it is assembled into the electronic display tube 2. Note that a hole 9 for heat radiation of the electronic display tube 2 is provided in the center of the support surface 3.
is formed.

A pair of locking pieces 11 facing each other are formed on the side wall portions 4 at both ends of the fixture 1 in the longitudinal direction. The locking piece 11 has a plate-like flexible arm part 12 that stands upward in the figure, and a free end of the arm part 12 projects inward of the fixture 1. A plate-shaped claw portion 13 is formed, and a protruding head 14 that is thicker than the claw portion 13 and protrudes outward is formed in a direction opposite to the claw portion 13. . A pair of engagement pieces 15 are formed on both side surfaces of the projecting head 14 and extend symmetrically to each other along a direction perpendicular to the longitudinal direction of the fixture 1. This engagement piece 15
has a trapezoidal cross section so as to form a slope 16 that slopes from the top to the bottom of the figure and approaches the inside of the fixture 1. Note that the shape of the engaging piece 15 is not limited to the trapezoidal shape, and may be, for example, a round bar shape.

In order to fix the fixture 1 to a printed circuit board (not shown), on the back side of the support surface 3 there are fixed legs 17 for maintaining a distance from the printed circuit board, and fixing legs 17 for inserting into positioning holes in the printed circuit board for positioning. A rod-shaped portion 18 and elastic leg pieces 19 for projecting into the engagement hole of the printed circuit board and elastically engaging and fixing the board are provided at appropriate positions.

A pair of plate-shaped gripping plates 21 that grip both ends of the electronic display tube 2 in the longitudinal direction hold the electronic display tube 2 in the fixture 1.
It is provided as a carrier for an automatic assembly device for assembling. The grip plate 21 can move toward the support surface 3 while gripping the electronic display tube 2 . Further, a pair of claw members 22 that move integrally with both gripping plates 21 are provided near both gripping plates 21 as part of the transport body, and each of the claw members 22 has a distal end portion that is engaged with the other. When engaging with each engagement piece 15 of the stopper piece 11, the slope 23 is oriented in such a direction that the arm part 12 of the stopper piece 11 can be engaged so as to bend in a direction away from the electronic display tube 2. It is formed.

Next, the procedure for assembling the electronic display tube 2 to the fixture 1 will be described below. Note that since both locking pieces 13 are symmetrical to each other, only one of them is shown.

As shown in FIG. 2, the claw member 22 moves integrally with the grip plate 21 that conveys the electronic display tube 2 toward the support surface 3 of the fixture 1, and the slope 23 of the claw member 22 moves into the locking piece. It engages with the slope 16 of the engagement piece 15 of No. 11. Furthermore, by moving the claw member 22 together with the grip plate 21, the slope 23 of the claw member 22 and the slope 16 of the locking piece 11 are largely engaged with each other as shown in FIG. Since the electronic display tube 2 escapes outward from the movement line of both longitudinal ends 24, the locking piece 11 and the electronic display tube 2 do not interfere with each other until the electronic display tube 2 is placed on the support surface 3. There is no.

After placing the electronic display tube 2 on the support surface 3, the gripping state by the gripping plate 21 is released and the gripping plate 21 and the claw members 22 are returned in the opposite direction to the conveyance direction, as shown in FIG. As shown in FIG. 2, the locking piece 11 elastically engages with the electronic display tube 2, and the electronic display tube 2 is fixed to the fixture 1.

Note that the upper end surfaces of the claw portion 13 and the protruding head 14 of the locking piece 11 are provided with an anti-slip surface 25 having a serrated cross section.
is formed, and when assembling the electronic display tube 2 manually, the locking piece 11 can be easily and reliably bent, and the assembling work can be easily performed.

[Effect of the invention] As described above, according to the invention, during the process of transporting the electronic display tube, the arm part is bent by a part of the transporting body so as to expand the claw part of the locking means outward. Therefore, there is no need for a separate process such as expanding the locking means in advance, and the assembly process can be simplified, which is extremely effective.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a fixture for an electronic display tube based on the present invention. 2 to 4 are side views of essential parts showing how the electronic display tube is assembled to the fixture. 5 to 7 are side views of essential parts showing how the electronic display tube is assembled to a conventional fixture. DESCRIPTION OF SYMBOLS 1...Fixing tool, 2...Electronic display tube, 3...Supporting surface, 4...Side wall part, 5...Terminal, 6...Terminal holding part, 7...Protection cover part, 8...Protrusion part, 9...
Hole, 11... Locking piece, 12... Arm portion, 13...
...Claw portion, 14...Protruding head, 15...Engagement piece, 1
6...Slope, 17...Fixed leg, 18...Bar-shaped part,
19... Elastic leg piece, 21... Gripping plate, 22... Claw member, 23... Slope, 24... End, 25... Anti-slip surface, 31... Fixture, 32... Support surface, 3
3... Electronic display tube, 34... Terminal, 33... Terminal holding part, 36... Locking piece, 37... End part, 38...
...Arm part, 39...Claw part, 40...Engagement groove, 4
1... Claw member, 42... Gripping plate.

Claims (1)

[Claims for Utility Model Registration] An electronic display tube placed on the support surface of a fixture,
In an assembly structure of an electronic display tube in which the electronic display tube is fixed to the fixture by engaging a locking means provided integrally with the peripheral edge of the support surface, the locking means is attached to the support surface. An upright flexible arm part, a claw part protruding inward from the arm part to engage with the electronic display tube, and a part of a carrier for assembling the electronic display tube. and an engaging piece integrally formed near the free end of the arm so as to expand the arm outward by engaging with the arm. structure.