JPH0121457Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a support device for a switch cover that covers a push button of an emergency switch provided in, for example, an intercom device or a telephone set.

Conventional configuration and problems thereof Conventionally, intercom devices equipped with an emergency switch have been provided. As an example, as shown in FIG. 1, an emergency switch 2 is installed in a casing 1 of an intercom device, and its push button 3 is made to protrude upward from a switch operation hole 5 formed in a panel 4 of the casing 1. There is. With the push button 3 projecting above the panel 4 in this manner, the pressing operation of the push button 3 is direct, so there is a drawback that it is easy to make an erroneous operation. Another conventional example is one in which a cover 6 is provided to cover the push button 3 of the emergency switch 2, as shown in FIG. This cover 6
is made of an elastic material, and has an engaging portion 8 at the lower part of the opposing side piece 7.
The engaging portion 8 is press-fitted into the switch operation hole 5 by utilizing the elastic deformation of the side piece 7, and the engaging piece 8 is engaged with the inner edge of the hole 5 to prevent it from coming out. By pressing the cover 6, the push button 3 is pressed to turn on the emergency switch 2, and the side piece 7 of the cover 6 is pressed.
By pressing inward to disengage the engaging portion 8 from the inner edge of the hole 5 and disengage the cover 6 from the hole 5, the push button 3 can be pulled to turn off the emergency switch 2. However, since the cover 6 only has its engaging portion 8 engaged with the inner edge of the hole 5, if the cover 6 is pressed diagonally, there is a risk that one of the engaging portions 8 will separate from the hole 5. In addition, there is a risk of forgetting to remove the cover 6 after a test, etc., and there is a risk of losing the cover 6.

Purpose of the invention The purpose of the invention is to prevent erroneous operation of the switch, to easily and reliably support the cover to the housing equipped with the switch, and to prevent loss of the cover. It is an object of the present invention to provide a support device for a switch cover as described above.

Composition of the Invention In order to achieve the above-mentioned object, the present invention includes a housing including a switch and a hole for operating the switch, and a pair of support shafts provided facing each other on the sides of the hole for operating the switch; A cover body is provided with a groove that fits into the support shaft, and covers the switch operation part and can close the switch operation hole. The auxiliary member has an engaging piece that faces the groove bottom at the tip of the engaging piece, and the engaging piece is elastically deformed and press-fitted inside the support shaft to close the tip. The engaging part is engaged with the support shaft, and the engaging part cooperates with the groove bottom of the cover body to rotatably support the support shaft.

DESCRIPTION OF EMBODIMENTS Hereinafter, an example in which the present invention is applied to a cover of an emergency switch of an intercom device will be described in detail with reference to the drawings. In FIG. 3, 11 is a housing of the intercom device, 12 is a handset, and 13 is a cord. As is clear from FIGS. 4 and 7, the panel 14 of the housing 11 has a recess 1 for fitting the cover.
5 is formed, and a pair of support plates 17 are protruded from both ends of the bottom plate 16 of the recess 15, and the upper end of each support plate 17 is formed in a semicircular shape 17a. A short support shaft 18 is protruded from the upper part of each support plate 17 so as to face each other. A hole 19 for operating an emergency switch is formed in the bottom plate 16, and a pair of notches 20 are formed in continuity with the hole 19 on the long side of the hole 19 in the bottom plate 16, on the side farther away from the support plate 17. . Bottom plate 1
6 has bosses 21 projecting downward on both sides of the hole 19, and support plates 22 are attached to these bosses 21 with screws 2.
It is attached by 3. An emergency switch 24 is mounted on the support plate 22, and a push button 25, which is an operating section thereof, projects outward from the hole 19. The emergency switch 24 is connected to an emergency electric circuit inside the housing 11.

Switch cover 2 supported by the support shaft 18
6 is composed of a cover body 27 and an auxiliary member 28, and the cover body 27 further includes a cover frame 29.
and a switch operation member 30. The cover frame 29 has a side plate 3 on a rectangular frame-shaped receiving edge 31.
2 and 33 are arranged in series, and one side plate 33 on the shorter side is formed to have a slightly narrower width and is provided with a stepped portion 34. This side plate 33 includes a connecting piece 35 and an outer plate 36.
A groove 37 into which the support shaft 18 fits is formed between the side plate 33 and the outer plate 36, and the groove bottom has a semicircular cross section. As is clear from FIGS. 5 and 6, a boss 38 is provided in the middle of the groove 37 to project downward. Engagement grooves 39 are provided on the upper and lower sides of the side plate 33 on the short side on both sides of the inner side.
is formed, and a notch 40 is formed on the outer side of the side plate 32 on the long side away from the groove 37, so that the engagement piece 4
1 is formed on the outer side of the lower end of the engaging piece 41.
2 is provided. The switch operation member 30 is
Side plates 44 and 45 are arranged around the four circumferences of the pressing plate 43,
Engagement pieces 46 are connected to the lower portions of both sides of the side plate 45 on the short side, and an engagement protrusion 4 is provided on the outside of the intermediate portion of each engagement piece 46.
7 is provided. This switch operating member 30
is inserted inside the cover frame 29 and the receiving edge 3
1, and the engagement protrusions 47 are selectively press-fitted into the upper and lower engagement grooves 39 and positioned. The auxiliary member 28 is made of an elastic material such as plastic, and has a recess 49 formed in the center of the top piece 48 that can fit into the boss 38.
A screw insertion hole 50 is formed at the bottom corresponding to the screw hole of the boss 38, and the both side plates 51 are gently inclined so as to be gradually separated from the recess 49 as they reach the lower end, and are connected to the lower ends of the both side plates 51. The provided engagement piece 5
2 is inclined so that it gradually expands as it reaches the upper end. The engaging piece 52 is formed slightly shorter than the side plate 51, and a semicircular engaging portion 53 formed at the tip faces the bottom of the groove 37. This auxiliary member 28 is inserted into the groove 37, the recess 49 is fitted into the boss 38, and the screw insertion hole 50 is inserted into the boss 38.
A screw 54 is screwed into the screw hole 8 to attach the cover frame 29.

The switch cover 26 configured in this way is
As shown in FIG. 5, the lower part of the groove 37 is
8, presses the cover frame 29, elastically deforms the engaging piece 52 and releases it inward of the support shaft 18, and as shown in FIGS. 6 and 7, the bottom of the groove 37 is inserted into the support shaft 18. to fit. At the same time, the engaging piece 5
2 is elastically restored, and its engaging portion 53 engages with the support shaft 18. Therefore, the switch cover 26 is rotatably supported on the support shaft 18 by the bottom of the groove 37 and the engaging portion 53 of the engaging piece 52.
In this switch cover 26, the engaging piece 41 is press-fitted into the notch 20 of the recess 15 of the panel 14, the engaging part 42 is engaged with the inner edge of the engaging piece 41, and the side plates 32, 33 are placed on the bottom plate 16. It covers the push button 25 of the switch 24 and closes the hole 19.

Next, the operation will be explained. During a test or an emergency, the switch operation member 30 of the switch cover 26 is pressed, and the engagement protrusion 47 is forcibly separated from the upper engagement groove 39 and engaged with the lower engagement groove 39. By lowering the switch operation member 30, the push button 25 of the emergency switch 24 can be lowered, and the emergency switch 24 can be turned on. After the test and after the emergency situation is resolved, press the engaging piece 41 inward from the notch 40 of the switch cover 26,
The engaging portion 42 is disengaged from the inner edge of the notch 20 of the panel 14, the switch cover 26 is rotated about the support shaft 18, and the push button 2 of the emergency switch 24 is
Expose 5. Then, pull the push button 25 to turn off the emergency switch 24. On the other hand, the switch operating member 30 of the switch cover 26 is pressed from inside, and the engaging protrusion 47 is inserted into the lower engaging groove 39.
It is forcibly removed and engaged with the upper engagement groove 39. Thereafter, the push button 25 of the emergency switch 24 can be covered by rotating the switch cover 26, pressing the cover frame 29, and elastically engaging the engaging portion 42 with the inner edge of the notch 20. .

Effects of the Invention As is clear from the above explanation, according to the present invention, since a switch cover is used to cover the switch, the operation of the switch becomes indirect, and erroneous operation can be prevented. In addition, the switch cover is pressed, and the engaging portion of the auxiliary member is engaged with the support shaft by using the elastic deformation of the engaging piece of the auxiliary member, and the engaging portion and the groove bottom opposing it cooperate to engage the support shaft. It is rotatably supported. Therefore, it is possible to securely support the switch cover on the support shaft with the simple operation of pressing. Also, after testing, etc., the switch cover can be rotated while being supported on the support shaft and the switch can be operated. There are advantages such as being able to prevent the cover from being lost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional intercom device equipped with an emergency switch, Fig. 2 is a sectional view showing another conventional switch cover support device, and Fig. 3 is a perspective view of a conventional intercom device equipped with an emergency switch. FIG. 4 is an exploded perspective view of the support device of the present invention, FIG. 5 shows a state in the middle of assembly, a sectional view corresponding to the - arrow direction in FIG. 4, and FIG. 7 shows the assembled state, a sectional view similar to FIG. 5, and 7.
The figure is a sectional view taken along the - arrow in FIG. 6. 11... Housing of intercom device, 12... Handset, 17... Support plate, 18... Support shaft,
19...Switch operation hole, 24...Emergency switch, 25...Push button (switch operation part), 26
...Switch cover, 27...Cover body, 28
...Auxiliary member, 29...Cover frame, 30...
...Switch operation member, 37...Support shaft fitting groove,
52...Engagement piece, 53...Engagement portion.

Claims (1)

[Scope of utility model registration request] A housing including a switch and a hole for operating the switch is provided with a pair of support shafts facing each other on the sides of the hole for operating the switch, and a groove that fits into the support shafts. A cover body that can cover the switch and close the hole for operating the switch, and an engaging piece that is attached to the inner surface of this cover body and inserted into the groove of the cover body on both sides, and a The auxiliary member has an engaging part facing the groove bottom, and the engaging piece is elastically deformed and press-fitted into the support shaft, and the engaging part at the tip engages the support shaft. A support device for a switch cover, characterized in that the switch cover is rotatably supported on a support shaft in cooperation with the groove bottom of the cover body.