JPH06111685A - Piano key switch with contact switching display function - Google Patents

Abstract

PURPOSE:To shorten the length of the whole display body including a coil spring and prevent the shape of a piano key handle from being restricted. CONSTITUTION:A piano key handle switch is provided with a display body 70 slidably fitted to a piano key handle 43 and displaying the contact switching state. The display body 70 is formed on a reversing handle 31 and is driven when the reversing handle 31 is rotated. A spring reception section 120 is protruded at the end of the side section of the display body 70 on the opposite side to the sliding direction of the display body 70 by a drive piece 71. One end section of a coil spring 78 for energizing the display body 70 in the opposite direction to the direction slid by the drive piece 71 is supported on the spring reception section 120. The length of the whole display body 70 including the coil spring 78 is shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a display portion for displaying a switching state of a piano handle type switch whose contacts are switched by a piano touch operation.

[0002]

2. Description of the Related Art As a piano handle type switch whose contacts are switched by a piano touch operation, there are, for example, those shown in FIGS. First, the basic structure of a conventional piano handle type switch will be described. As shown in FIG. 8 or FIG. 9, the piano handle type switch has a push button switch 5 whose contacts are switched by pushing the push button 32, and one end of which is rotatably supported on the upper surface of the push button switch 5. It is composed of a piano handle 43 which pushes the end portion and pushes the push button 32.

The body of the push-button switch 5 is composed of a body 5a made of synthetic resin and a cover 5b, and is formed in the size of one module of a standardized ready-made embedded wiring device. The cover 5b is provided with a pair of locking claws 11a and 11b on both end surfaces thereof so that the cover 5b can be detachably attached to the attachment frame 2 used when burying a ready-made wiring device. Space 1 is provided on the back of one of the locking claws 11b.
2 is formed so that the locking claw 11b elastically bends backward. Therefore, the push button switch 5 can be detachably attached by locking the locking claws 11a and 11b to the mounting frame 2 for a ready-made wiring device, and like a ready-made embedded wiring device, such as a wall surface. It is designed so that it can be buried on the construction surface.

Connection terminal accommodating portions 13 and 14 are formed at both ends of the body 5a of the push button switch 5, and a central accommodating portion 23 is formed between the connection terminal accommodating portions 13 and 14. Here, the common terminal plate 15 and a quick-connect terminal composed of a lock spring and a release button (not shown) are housed in the one connection terminal housing 13. Further, the other connecting terminal housing portion 14 houses a terminal plate 18 and a first connecting terminal portion including a locking spring (not shown) and a second connecting terminal portion including a terminal plate 20 and a locking spring (not shown). The first and second connection terminal portions can be released in common by a release button (not shown).

An extension piece 18a, to which a fixed contact 25a is fixed, is formed on the terminal plate 18, and the extension piece 18a is extended to the side of the central storage portion 23 adjacent to the partition wall. Also,
Bending piece 20 in which fixed contact 25b is also fixed to terminal board 20
a is formed, and the bent piece 20a is formed on the terminal plate 18
The extension piece 18a is extended toward the central storage portion 23 side.

An open / close member 24 made of a conductive plate is rotatably provided between the fixed contacts 25a and 25b. The opening / closing body 24 is erected on a support piece 15a extending from the common terminal plate 15 to the central storage portion 23, and protrusions (not shown) provided at the lower ends of both ends are formed on the inner wall of the central storage portion 23. It fits into the V-shaped recess 27 and is rotatable around the lower portion of the V-shaped recess 27. Then, the movable contacts 29 provided on both upper surfaces of the opening / closing body 24 are moved to the fixed contacts 2 according to the rotation.
The common connection terminal portion and the first or second connection terminal portion are connected to and disconnected from each other by connecting and disconnecting to and from 5a and 25b.

The opening / closing body 24 includes a coil spring (not shown), a reversing handle 31, a push button 32, and a slide cam 3.
3. The reversing mechanism composed of the return spring 37 reversely drives. Here, the lower part of the coil spring is locked to the upper edge of the opening / closing body 24, and the upper part of the coil spring is housed in a cylindrical portion 31a projecting from the lower side of the reversing handle 31. To open and close the opening and closing body 24. The reversing handle 31 is rotatably mounted by pivotingly supporting an inverted triangular shaft 31b provided on both sides on a bearing (not shown) formed on the inner wall of the cover 5b, and engaging with the slide cams 33 at both ends of the upper part. A protrusion 34 is provided so as to project. The push button 32 is attached to the cover 5b so as to be vertically movable, and is constantly urged upward by a return spring 37 arranged below. Engaging cam bodies 38 that slidably engage with the engaging protrusions 34 of the reversing handle 31 are formed on the lower surfaces of both ends of the slide cam 33, and are attached slidably on the lower surface side of the push button 32, and are formed in a claw shape inside. A pair of spring pieces 3
A protrusion 32a formed on the lower surface of the push button 32 is inserted between 3a, and the spring piece 33a gives a restoring force.

In the piano handle 43, a pair of turning pieces 43a are vertically provided from the lower surface on the pivot end side, and a pair of retaining pieces 43b for preventing the push button switch 5 from coming off from the lower surface on the pushing operation end side. It is set up. The rotating piece 43a is engaged with the recess 54 formed in the cover 5b, the retaining piece 43b is inserted into the space 12, and when the pressing operation end side of the retaining piece 43b is pressed, the rotating piece 43a side is opened. It rotates like a piano touch as a fulcrum. Then, by rotating the piano handle 43, the push button 32 of the push button switch 5 is pressed.

Next, the operation of the push button switch 5 will be briefly described with reference to FIGS. Note that FIG. 10 shows a state in which the piano handle 43 is not operated at all.
2 shows a state in which the pressing operation end of the piano handle 43 is fully pushed, and FIG. 11 shows an operating state in the middle thereof,
13 shows a state in which the pressing operation of the piano handle 43 has been released and the piano handle 43 has returned, FIG. 15 shows a state in which the pressing operation end of the piano handle 43 has been fully pressed again, and FIG. FIG. 10 shows a state in which the piano handle 43 is returned by releasing the pressing operation of the piano handle 43 in the state of FIG. Now, assuming that the piano handle 43 is operated in the state of FIG. 10, the push button 32 is pushed down against the return spring 37 in accordance with the operation of the piano handle 43 as shown in FIG. 11, and the slide cam 33 is pushed by pushing down the push button 32. Goes down. Then, the engaging cam body 38 on the right side of the slide cam 33 in the figure hits the engaging protrusion 34 on the right side of the reversing handle 31, whereby the reversing handle 31 is rotated. At this time, the slide cam 33 slides to the right side in the drawing as the reversing handle 31 rotates. When the reversing handle 31 is rotated in this way, the coil spring is reversed and the opening / closing body 24 is reversed, so that the movable contact 29 is separated from one fixed contact 25b and comes into contact with the other fixed contact 25a. (See Figure 12). After this reversal,
When the pushing down force of the piano handle 43 is released, FIG.
As described above, the push button 32 is pushed up by the return spring 37, and at this time, the piano handle 43 returns to the original state. And
At the same time, the slide cam 33 also slides back to the central portion by the spring force of the spring piece 33a. After that, when the piano handle 43 is operated again as shown in FIG.
As shown in FIG. 5, the reversing handle 31 is reversed and rotated in the opposite direction to the above case, whereby contact switching is performed so that the movable contact 29 comes into contact with the fixed contact 25b, and the pressing force of the piano handle 43 is released here. Then, the state returns to the state shown in FIG.

The above is the description of the basic piano handle type switch, but the structure of the display unit for displaying the contact switching state will be described below. A sliding recess 76 is provided on the back surface of the piano handle 43.
A display window 110 that opens to the surface of the piano handle 43 is provided on the upper bottom of the. An optical display unit 111 is provided on the side of the sliding recess 76, and a lens is fitted in the optical display unit 111. The display body 70 is provided in the sliding recess 76.
Is slidably fitted. Driving piece 71 of display body 70
As shown in FIG. 16, a spring receiving portion 120 is provided so as to project from the end portion in the sliding direction. A coil spring 78 for urging the spring of the display body 70 is interposed between the spring receiving portion 120 and the end of the slide recess 76 on the side opposite to the direction in which the drive piece 71 slides the spring. Therefore, both ends of the coil spring 78 are supported.

A guide projection 70a is provided on the rear surface of the display body 70.
The guide projection 70a has an operation surface 70b that is inclined in the sliding direction of the display body 70 on the back surface of the guide projection 70a. On the other hand, a drive piece 71 for sliding the display body 70
Is integrally formed with the reversing handle 31, and the driving piece 71 is substantially L-shaped and is inserted into the hole 73 of the cover 5b. A light emitting element 81 such as an LED or a neon lamp is provided in the cover 5b of the push button switch 5, and this light emitting element 81 displays, for example, the energization state of the load or displays the contact switching of the push button switch 5. It is something that

10 (b) to 15 (b) show the driving state of the display body 70. In the state of FIG. 10B, the driving piece 7 is provided near the lower end of the inclined operation surface 70b.
1, the upper end of which is located. When the piano handle 43 is pressed in this state, the reversing handle 31 is rotated and the upper end portion of the driving piece 71 provided integrally with the reversing handle 31 is shown in FIG.
The display body 70 is guided by the inclined surface 70b and moves as shown by an arrow in FIG. 11 (b) by being pressed against the operation surface 70b that is raised and inclined as shown in FIG. 1 (b), and faces the display window 110. At the time when the surface position of the display body 70 is changed, the piano handle 43 is completely pushed down, the reversing handle 31 completes the reversing rotation, and the contacts are exchanged.
As shown in (b), the upper end portion of the drive piece 71 is locked by being locked by the rising surface that is continuous with the inclined upper end portion of the inclined operation surface 70b, and this serves as locking means. In this locked state, even if the player releases the piano handle 43, FIG.
As shown in (b), the lock state is maintained.
In this state, a part of the surface portion of the display body 70 (see FIG.
In FIG. 3B, the left half of the surface of the display body 70 is opposed to the display window. This state is shown in FIG.
As shown in (a), the movable contact 29 has the fixed contact 25 on the left side.
It is a state in which the state of being in contact with a is displayed from the display window. Then, when the piano handle 43 is further pressed, the reversing handle 31 reversely rotates in the opposite direction, and accordingly, the tip of the driving piece 71 is lowered downward, the locking means is released, and the driving piece 71 is lowered. As a result, the display body 70 is moved by the spring force of the coil spring 78 as shown in FIG.
It returns as shown in (b) and returns to the state of FIG. 3 (b) when the pressing of the piano switch is released. In this state, the movable contact 29 is fixed on the right side as shown in FIG. 10 (a). It contacts the contact 25b, and another part of the surface of the display body 70 (the right half of the surface of the display body 70 in FIG. 10B) faces the display window. This state is shown in FIG.
As shown in, the state where the movable contact 29 is in contact with the right fixed contact 25b is displayed from the display window.
Then, the contact switching state is displayed on the display body 70 in this way. In this case, the display body 70 is displayed.
Are described as “strong” and “weak”, or as “on” and “off”. For example, “strong” is described on one side of the surface of the display body 70. In addition, "weak" is displayed on the other side, and "strong" or "weak" is displayed from the display window 110 according to contact switching. On the other hand, the light emitting element 81 displays, for example, the energization state of the load,
Alternatively, the contact switching of the push button switch 5 is displayed as light, and in this case, the light of the light emitting element 81 is displayed through the light emitting display window 111 of the piano handle 43.

[0013]

By the way, in the above-mentioned conventional piano handle type switch, as shown in FIG. 16, the spring receiving portion 12 is provided at the end of the display body 70 in the sliding direction.
Since 0 is projected and the end portion of the coil spring 78 is supported by this, the dimension of the display body 70 indicated by L becomes long and the shape of the piano handle 43 is restricted. For example, if the piano handle 43 has a circular shape and the L dimension becomes long, it cannot be accommodated unless the diameter of the piano handle 43 is increased, which causes a problem in adopting the circular piano handle 43. It was

The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to shorten the length of the entire display body including the coil spring and to reduce the shape of the piano handle. It is to provide a piano switch with a contact switching display function that can avoid being restricted.

[0015]

In order to achieve the above object, the piano switch with contact switching display function of the present invention has a reversing handle 31 when the push button 32 is pushed in, when the push button 32 is pushed. A push button switch 5 which is rotated in a reverse direction to switch contacts according to the reverse rotation of the reverse handle 31, and a piano handle 43 which is mounted on the push button switch 5 and presses the push button 32 by a piano touch operation. And a display 70 that is slidably attached to the piano handle 43 and displays a contact switching state.
And a drive piece 71 formed on the reversing handle 31 for sliding the display body 70 as the reversing handle 31 rotates.
Are provided, and the display body 70 on the side of the display body 70 has a driving piece 71.
One end of a coil spring 78 for projecting a spring receiving portion 120 at the end opposite to the direction in which the coil 70 is slid by and biasing the display body 70 in the direction opposite to the direction in which it is slid by the drive piece 71. The part is supported by the spring bearing part 120.

It is also preferable that the piano handle 43 has a circular shape.

[0017]

According to the present invention having the above-described structure, the contact of the push button switch 5 is switched by the pressing operation of the piano handle 43. In this case, the driving piece 71 causes the display body 70 to move the coil spring 78. Display 70 against the spring force of
To display the switch changeover, and when the pressing of the display body 70 by the driving piece 71 is released by the next pressing operation of the piano handle 43, the display body 70 slides in the opposite direction by the coil spring 78. Be moved. In this case, the spring receiving portion 120 is provided at the end of the side of the display body 70 opposite to the direction in which the display body 70 is slid by the drive piece 71, and the display body 70 is slid by the drive piece 71. Since one end of the coil spring 78 for biasing the spring in the direction opposite to the supported direction is supported by the spring receiving portion 120, the length of the entire display body 70 including the coil spring 78 can be shortened. It is a thing.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. 1 to 5 show an embodiment of the present invention. Since the basic structure of the piano handle type switch, the operation of the push button switch 5, and the driving state of the display body 70 are the same as those of the conventional example already described, the description thereof will be omitted.

The structure of the piano handle 43 and the structure of the display 70 which are different from the conventional example will be described below.
As shown in FIGS. 4 and 5, the piano handle 43 has a circular shape, and a pair of rotating pieces 43a is vertically provided from the lower surface on the pivotal end side, and the push button switch 5 from the lower surface on the pressing operation end side. A pair of retaining pieces 43b are provided so as to prevent them from coming off. The rotating piece 43a is a recess 5 formed in the cover 5b.
4, the retaining piece 43b is inserted into the space 12,
When the pressing operation end side of the retaining piece 43b is pressed, the rotating piece 4
It rotates in a piano touch type with the 3a side as a fulcrum. Then, by rotating the piano handle 43, the push button 32 of the push button switch 5 is pressed. In FIG. 4, 140 is an outer frame.

As shown in FIG. 5, a sliding recess 76 is provided on the rear surface of the piano handle 43.
A display window 110 that opens to the surface of the piano handle 43 is provided on the upper bottom of the piano 6. An optical display unit 111 is provided on the side of the sliding recess 76, and a lens is fitted in the optical display unit 111. The display body 7 is in the sliding recess 76.
0 is slidably fitted. A spring receiving portion 120 is provided in a protruding manner at an end portion of the side portion of the display body 70 opposite to the direction in which the display body 70 is slid by the drive piece 71. A coil spring 78 for urging the spring of the display body 70 is interposed between the spring receiving portion 120 and the end of the slide recess 76 on the side opposite to the direction in which the drive piece 71 slides the spring. Therefore, both ends of the coil spring 78 are supported.

A guide projection 70a is provided on the rear surface of the display body 70.
The guide projection 70a has an operation surface 70b that is inclined in the sliding direction of the display body 70 on the back surface of the guide projection 70a. On the other hand, a drive piece 71 for sliding the display body 70
Is integrally formed with the reversing handle 31, and the driving piece 71 is substantially L-shaped and is inserted into the hole 73 of the cover 5b.

In the present invention, the spring receiving portion 120 is provided at the end of the side of the display body 70 opposite to the direction in which the display body 70 is slid by the drive piece 71 so as to drive the display body 70. Since one end of the coil spring 78 for biasing the spring in the direction opposite to the direction in which it is slid by the piece 71 is supported by the spring receiving portion 120, the coil spring 78 indicated by L in FIG. 3 and FIG. The length of the entire display body 70 including the same (that is, the same as the length of the sliding recess 76 in the sliding direction) can be shortened, and there is no problem even if the piano handle 43 is circular as shown in the accompanying drawings. Is.

6 and 7 show an embodiment in which the piano handle 43 has a semicircular shape and two semicircular piano handles 43 are arranged side by side to form a circular shape as a whole. Also in this case, the display body 70 on the side of the display body 70 has the drive piece 71.
One end of a coil spring 78 for projecting a spring receiving portion 120 at the end opposite to the direction in which the coil 70 is slid by and biasing the display body 70 in the direction opposite to the direction in which it is slid by the drive piece 71. Since the portion is supported by the spring receiving portion 120, the length of the entire display body 70 including the coil spring 78 indicated by L in FIG. 7 (that is, the same as the length of the sliding recess 76 in the sliding direction) is determined. Short and semi-circular piano handle 43
It can be fitted as well.

[0024]

As described above, according to the present invention, the spring receiving portion is provided at the end of the side portion of the display body opposite to the direction in which the display body is slid by the drive piece, and the display body is driven by the drive piece. Since one end of the coil spring for biasing the spring in the direction opposite to the sliding direction is supported by the spring receiving portion, the length of the entire display body including the coil spring can be shortened. As a result, there is less restriction on the shape of the piano handle, and the display body can be movably attached even if the diameter is not so large even if it is circular or the like.

[Brief description of drawings]

FIG. 1 (a) is a cross-sectional view showing a state where a movable contact is in contact with one fixed contact in a piano handle switch according to one embodiment of the present invention, and FIG. FIG. 6 is a cross-sectional view showing the relationship of

FIG. 2A is a sectional view showing a state where a movable contact is in contact with the other fixed contact in the piano handle switch of the above, and FIG. 2B is a sectional view showing a relationship between a driving piece and a display body. is there.

FIG. 3 is a plan view of a display body used in the above.

FIG. 4 is a view showing the piano handle of the above,
(A) is a plan view and (b) is a sectional view.

FIG. 5 is a rear view of the piano handle of the above.

FIG. 6 is a view showing another example of the above piano handle, in which (a) is a plan view and (b) is a side view.

FIG. 7 is a rear view of the above.

FIG. 8A is a sectional view showing a state where a movable contact is in contact with one fixed contact in a conventional piano handle switch, and FIG. 8B shows a relationship between the drive piece and the display body. FIG.

9A is a sectional view showing a state where a movable contact is in contact with the other fixed contact in a conventional piano handle switch, and FIG. 9B is a sectional view showing a relationship between a driving piece and a display body. Is.

10A and 10B are views for explaining the operation sequence of a conventional example, in which FIG. 10A is an overall sectional view, and FIG. 10B is a sectional view showing a relationship between a drive piece and a display body.

11A and 11B are views for explaining an operation sequence of a conventional example, FIG. 11A is an overall sectional view, and FIG. 11B is a sectional view showing a relationship between a drive piece and a display body.

12A and 12B are views for explaining the operation sequence of a conventional example, in which FIG. 12A is an overall cross-sectional view, and FIG. 12B is a cross-sectional view showing a relationship between a drive piece and a display body.

13A and 13B are views for explaining the operation sequence of a conventional example, in which FIG. 13A is an overall sectional view, and FIG. 13B is a sectional view showing a relationship between a driving piece and a display body.

14A and 14B are views for explaining the operation sequence of a conventional example, in which FIG. 14A is an overall sectional view, and FIG. 14B is a sectional view showing a relationship between a driving piece and a display body.

15A and 15B are views for explaining an operation sequence of a conventional example, FIG. 15A is an overall sectional view, and FIG. 15B is a sectional view showing a relationship between a driving piece and a display body.

FIG. 16 is a plan view of a display body.

[Explanation of symbols]

 5 push button switch 31 reversal handle 32 push button 43 piano handle 70 display 71 drive piece 78 coil spring 120 spring receiver

Claims (2)

[Claims] 1. A push button switch which, when a push button is pushed in, causes a reversing handle to rotate in reverse with the pushing operation of the push button, and a contact switch is performed according to the reversing rotation of the reversing handle, and this push button. It is equipped with a piano handle attached to the upper part of the switch to push the push button by a piano touch operation, slidably attached to the piano handle and displaying a contact switching state, and a turning handle formed on the reversing handle. A drive piece for sliding the display body is provided along with, and a spring receiving portion is provided in a protruding manner at an end portion on the side opposite to the direction in which the display body is slid by the drive piece on the side portion of the display body, A piano switch with a contact switching display function, in which one end of a coil spring for biasing the display body in a direction opposite to the direction in which it is slid by a driving piece is supported by a spring receiving portion. 2. The piano switch with contact switching display function according to claim 1, wherein the piano handle has a circular shape.