JPH0132264Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a status display device in a switchboard or the like.

[Conventional technology]

Conventionally, a status display device in a switchboard is configured as shown in FIG. A status display lamp 4 and a selection completion lamp 5 are housed, and lamp contacts 6 and 7 that contact the terminal fittings of both lamps 4 and 5 are respectively led out from the rear surface of the case 1. Mounting parts 8
A micro switch 9 constituting a contact for switching conditions of the main equipment is attached through the switch, and a nearly annular button stand 10 that can be slid back and forth is attached to the selection indicator light chamber 3.
is provided at the bottom of the rear end of this button stand 10.
An operating protrusion 12 is formed that turns on and off the contact of the micro switch 9 by sliding the micro switch 9. As shown in FIG. 2, this button stand 10 is elastically biased downward by an upper elastic leaf spring 13 provided at the upper part of the selection indicator light chamber 3, and is provided with a lower positioning button screwed to the case 1. It is elastically biased upward by an elastic spring 14 and held in position by both springs 13 and 14. And this case 1 is
It is screwed to the mounting plate 15 on the panel surface of the switchboard, and then the display plate 17 is fitted to the front of the case 1 via the contact plate 16, the glove 18 is attached to the front of the status display lamp 4, and the button stand is A substantially cylindrical operation button 20 having a display window 19 on the front surface is screwed onto the front surface of the device 10 .

Then, as the operating button 20 is pushed or pulled, the button stand 10 slides within the selection indicator light chamber 3, and when the operating protrusion 12 turns on or off the contact of the micro switch 9, the selection indicator lamp 5 lights up. Alternatively, the light is turned off and the selection state made by the operation button 20 is displayed. Further, the status display lamp 4 is turned on or off according to the status of the main equipment such as a disconnector, a disconnector, etc. selected or controlled by the operation button 20, and the status of the main equipment is displayed.

[Problem that the invention attempts to solve]

However, according to the conventional status display device, the operating button 20 is located at the operating position (pushed position) and the non-operating position (pull out position) of the micro switch 9.
In order to hold each spring in place, two parts, the upper elastic spring 13 and the lower positioning elastic spring 14, are required.
3, 14 requires time and is expensive, and furthermore, the elastic spring 14 for lower positioning is disadvantageous.
As shown in Fig. 3, the mounting piece 1 at its base is
Since it is mounted by screwing to the case 1 using the two mounting holes 14'' of 4', the position adjustment is required, which has the disadvantage that the mounting is difficult.

In addition, since the status display lamp 4, selection completion lamp 5, and micro switch 9 are individually attached to the case 1, it takes a great deal of effort to assemble them. In order to prevent excessive sliding during operation, it is necessary to use the button stand 10, store it in the case 1 so that it does not come off, and connect the operation button 20 to it, which reduces the number of parts and ease of assembly. There is a problem.

This invention was made with the above points in mind, and it not only securely holds the operating button in the push-in position and the pull-out position without using separate parts such as leaf springs, but also simplifies the assembly of the device. It aims to provide a means to obtain it.

[Means for Solving the Problems] Next, the configuration of this invention will be explained using FIGS. 4 and 5, which correspond to embodiments.

The status display device according to this invention has a box-shaped case 24 made of resin material and having an open rear surface.
and a display window 27 formed on the front wall of the case 24.
, a guide tube 28 that is integrally provided on the front wall of the case 24 and has a button insertion hole 29 in the front-rear direction that communicates with the inside of the case 24;
A pair of escape holes 30 in the front-rear direction formed at opposing positions on the peripheral wall of the button insertion hole 30 and a pair of protrusions 53 protruding from opposite positions on the outer periphery of the tip are passed through the pair of escape holes 30 and inserted into the button insertion hole. 29, and an operating button 52 inserted through the case 29 so as to be movable back and forth, and an elastic inwardly curved portion 36 formed on both side plates of the case 24, respectively.
The pair of protrusions 53 of the operating button 52, which are recessed in the front-rear direction and inserted and rotated, are fitted into the curved portions 36 on the inner surfaces of the side plates, respectively, so that the operating button 52 is fitted in the front and rear of the operating button 52. A guide groove 39 that guides the movement, positioning holes 37 and 38 formed before and after the substantially central position of the curved portion 36 of both guide grooves 39, and each of the pair of protrusions 53. Both positioning holes 3 provided on the end face
7 and 38 respectively to hold the operation button 52 in the pulled out position and the pushed-in position; a large-diameter portion 55 that prevents the button 52 from being pushed beyond the push-in position; a printed circuit board 43 attached to the rear opening of the case 24; The switch 48 is attached to the printed circuit board 43 and is turned on and off by the operation button 52 in the pushed-in position and the pulled-out position.

[Effect]

When assembling the device, when the printed circuit board 43 is attached to the rear opening of the case 24, the light emitting source 45 attached thereto is placed at the position of the display window 27, and the switch 48 is operated by the operation button 52. placed in position.

Furthermore, when the operation button 52 is rotated after passing the pair of protrusions 53 from the front through the escape hole 30 of the guide tube 28 and inserting it into the button insertion hole 29 of the guide tube 28, the pair of protrusions The portion 53 fits into the guide groove 39 and is supported freely forward and backward.

Therefore, when the operation button 52 is pressed in and pulled out, the protrusions 54 of both protrusions 53 are pressed against the curved portion 3.
6 into both positioning holes 38 and 37, respectively,
The operating button 52 is held in the pushed-in position and the pulled-out position, and the switch 48 is operated on and off. At this time, since both curved portions 36 are made of elastic resin, pressure is always applied to the operating button 52. This makes it possible to provide a snap when operating the button 52, allowing the operating button 52 to be operated and held in position accurately.

Here, the large diameter portion 55 of the operating button 52 abuts against the inner step of the guide tube 28 to prevent the operating button 52 from being pushed in too much, and the protruding button 52 from being pushed in too much. This is prevented by the portion 53 coming into contact with the guide tube 28 from behind.

〔Example〕

Next, this idea will be described in the fourth section showing one example of it.
This will be explained with reference to the drawings below.

In these drawings, reference numeral 21 denotes a mounting plate on the panel surface of the switchboard, in which a rectangular square hole 22 and a screw insertion hole 23 directly below the square hole 22 are formed. 24 is a box-shaped case made of a resin material and has an open rear surface; 25 is a hook-shaped fitting part integrally provided at the upper part of the front wall of the case 24; Square hole 2 of mounting plate 21
The case 24 is held by fitting the upper edge of the case 24. 26 is a window frame provided directly below the fitting portion 25 on the front wall of the case 24, and has a status display window 27 formed therein that communicates with the inside of the case 24; 28 is provided integrally at approximately the center of the front wall of the case 24; It is a guide tube in the front and back direction that guides the back and forth movement of an operation button that is provided and will be described later, and a button insertion hole 29 that communicates with the inside of the case 24 is formed inside. This guide tube 28 has four escape holes 30 in the front and back direction at equal intervals on its peripheral wall, and a stopper is provided on the rear end surface of the guide tube 28 at a position offset by 45 degrees from each relief hole 30. A cutout 31 is formed therein. 32 is a screw insertion hole formed on the front surface of the lower end of the case 24, and a nut holding hole 33 is formed behind it.
With the fitting part 25 fitted into the upper edge of the square hole 22 of the mounting plate 21, insert the nut 34 into the nut holding hole 33 from below, and then screw the screw 35 into the mounting plate 21.
and each screw insertion hole 23 of the case 24,
By screwing into the nut 34 through 32,
Case 24 is fixed to mounting plate 21.

Reference numeral 36 designates elastic inwardly curved portions formed on both side plates of the case 24.
During the resin molding of the case 24, the center portions of both sides are intentionally formed to curve inward, and as shown in FIG. If B is the curved portion 36, then A>B. 37 and 38 are circular pull-out positioning holes and push-in positioning holes that are transparently provided at approximately the center of both curved portions 36, that is, at the maximum curved position, and are located in the front and rear. Both positioning holes 3 are formed in the direction
Guide grooves 7 and 38, 40 and 41 are sloped parts and stoppers formed to bulge out on the inner surface of the central part of both curved parts 36, and are located above and below the guide groove 39. Reference numeral 42 designates a fitting hole for a printed circuit board, which will be described later, which is transparently provided at the rear end portions of both side plates of the case 24.

Reference numeral 43 denotes a printed circuit board inserted from the rear opening of the case 24, and protruding pieces 44 are integrally formed on both sides of the printed circuit board.By fitting each protruding piece 44 into the fitting hole 42 of the case 24, the printed circuit board 43 is inserted. Retained. 45 and 46 are a status display light emitting diode and a selection display light emitting diode which are attached to the front surface of the printed circuit board 43 and located at the center of the status display window 27 and the guide tube 28, respectively; 47 is attached to the upper part of the front surface of the printed circuit board 43; Voltage reducing resistors are connected in series to the light emitting diodes 45 and 46 on the pattern of the printed circuit board 43, respectively, and 48 is a micro switch that is attached to the front of the printed circuit board 43 and serves as a contact for switching conditions for the main equipment. It is operated by pressing the contact 49 on the front side of 48 via the switch plate 50. 51 is the printed circuit board 4
This is a wrapping wiring terminal with a square cross section that is attached to the rear surface of 3.

Reference numeral 52 denotes a cylindrical operation button long in the front and back direction for giving a control command, and 53 is provided integrally with the outer periphery of the tip of the operation button 52, and 4 protrudes outward in a substantially cross shape.
By inserting each protrusion 53 into each escape hole 30 of the guide tube 28, the operation button 5
2 is inserted into the button insertion hole 29, and after the insertion is completed,
When the operation button 52 is rotated by 45 degrees and pulled toward the user, each protrusion 53 fits into the retaining notch 31 of the guide tube 28, thereby preventing the operation button 52 from rotating or coming off thereafter. Reference numeral 54 denotes approximately hemispherical protrusions that are integrally provided on the end faces of two opposing protrusions 53 of the four protrusions 53 of the operation button 52, and as shown in FIG. If the dimension between the vertices of 54 is C, then A>C>B.
After the insertion of the operation button 52 is completed, when the operation button 52 is rotated in the clockwise rotation direction, during this operation,
First, each protrusion 54 corresponds to the inclined portion 40 of the both side plates.
When the protrusions 54 contact and rotate further, each protrusion 54 pushes the inclined part 40 due to the elasticity of the curved part 36, overcomes the inclined part 40, and fits into the guide groove 39. Thereafter, when the operation button 52 is pushed or pulled, the protrusions 54 of the protrusion 53 are moved into the guide grooves 5 and 5, respectively.
9 to fit into the push-in positioning hole 38 or pull-out positioning hole 37. Reference numeral 55 denotes a large-diameter portion formed approximately in the middle of the operation button 52, and when the operation button 52 is inserted, the rear end surface of the large-diameter portion 55 comes into contact with a stepped portion formed on the inner periphery of the guide tube 28. This prevents insertion beyond a predetermined level. 56 is a spring for returning the operating button 52; 57 and 58 are colored lenses fitted to the front openings of the window frame 26 and the operating button 52, respectively, and a light emitting diode 45 for status display and a selection display, respectively. It is located in front of the light emitting diode 46. Reference numeral 59 is a display board attached to the front of the case 24, on which the name of the application, the name of the main equipment to be controlled, etc. are written.

Then, as shown in FIGS. 4 and 5, when the operation button 52 is pushed in, both protrusions 54 of the operation button 52 fit into the push-in positioning holes 38 of the curved portion 36 of the case 24, respectively. The operation button 52 is held in the pressed position. At this time, the rear end surface of the operation button 52 operates the micro switch 48 on the printed circuit board 43 via the switch plate, and main equipment such as a disconnector or a disconnector is selected or controlled. Next, when the operating button 52 is pulled, both protrusions 54 of the operating button 52 push the curved portions 36 outward against the elastic force of the resin, pushing them through the positioning holes 38. Then, both protrusions 54 slide forward in both guide grooves 39, and then both protrusions 54 fit into both drawer positioning holes 37, respectively, and the operation button 52 is held in the drawn out position. At this time, the operation button 52 is separated from the micro switch 48 and the pressing of the switch plate 50 is avoided, so that the pressing of the contact 49 via the switch plate 50 ends, and the selection or control of the main device is canceled. .

[Effect of idea]

As described above, according to the status display device of this invention, the light emitting source and the switch can be built into the case at the same time by simply installing a printed circuit board into the rear opening of the case, and the operation buttons are placed inside the guide cylinder. By simply inserting the device from the front and rotating it, the device can be assembled into the case while preventing the operation button from being pushed in or pulled out by force, which greatly simplifies the assembly of the device.

Furthermore, when the operation button is pushed in and pulled out, both protrusions are fitted into the positioning holes on both curved parts of the case, so the operation button can be held in the pushed-in position and the pulled-out position, respectively. Since both curved portions are made of elastic resin, pressure is constantly applied to the operating button, and a snap can be applied during operation, allowing the operating button to be operated accurately and held in position. There is no need to use any conventional spring parts, and the number of parts can be reduced and costs can be reduced.

[Brief explanation of the drawing]

Figures 1 to 3 show conventional status display devices, with Figure 1 being an overall cutaway side view, Figure 2 being a front view taken along line X-X' in Figure 1, and Figure 3 being a lower positioning device. A perspective view of an elastic spring, FIG. 4 The following drawings show one embodiment of the status display device of this invention, FIG. 4 is an overall cut-away side view, FIG. 5 is a cut-away plan view of FIG.
Fig. 6 is a rear view of the case, Fig. 7 is a cutaway side view of the case, Fig. 8 is a partially cutaway plan view of Fig. 7, and Figs. 9 and 10 are a rear view and side view of the operation button. It is a diagram. 24...Case, 29...Button insertion hole, 36...
Curved portion, 37...Drawer positioning hole, 38...
... Push-in positioning hole, 45 ... Light-emitting diode for status display, 46 ... Light-emitting diode for selection display, 48 ... Micro switch, 52 ... Operation button, 54 ... Protrusion.

Claims (1)

[Scope of utility model registration request] A box-shaped case made of a resin material and having an open rear surface, a display window formed on the front wall of the case, and a display window in the front-rear direction that is integrally provided on the front wall of the case and communicates with the inside of the case. A guide tube in which a button insertion hole is formed, a pair of escape holes in the front and back direction formed at opposing positions on the circumferential wall of the guide tube, and a pair of protrusions protruding at opposing positions on the outer periphery of the tip part are provided. an operating button that is passed through a pair of relief holes and inserted into the button insertion hole so as to be movable back and forth; an elastic inwardly curved portion formed on each side plate of the case; and an inner surface of the both side plates. a guide groove, which is recessed in the front-rear direction in the curved portion, into which the pair of protrusions of the inserted and rotated operating button are respectively fitted, and guides the longitudinal movement of the operating button; positioning holes formed in front and rear of a substantially central position of the curved portion of the groove; and a positioning hole provided in each end face of the pair of protrusions that fits into both the positioning holes, respectively, and the operation button a protrusion that holds the operating button in the pushed-in position and the pulled-out position; a large-diameter part that is formed on the operating button and comes into contact with the inner step of the guide tube to prevent the operating button from being pushed beyond the pushed-in position; a printed circuit board mounted on the rear opening of the case; a light emitting source mounted on the printed circuit board and located in the display window for displaying various states; and a light emitting source mounted on the printed circuit board for operating the push-in position and the pull-out position. A status display device equipped with a switch that is turned on and off using a button.