JPS6321065Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an illuminated pushbutton switch that operates the switch by operating the pushbutton and also has the function of displaying the status of the switch with light, and is particularly applicable to a housing fixed to a panel. This invention relates to an illuminated push button switch which has been improved so that the switch holder can be easily attached and detached.

In a typical illuminated pushbutton switch, a housing that supports the pushbutton and lamp is fixed at a predetermined position on a panel.
A holder with a switch and its operating mechanism can be removably attached to the back of the panel. These two must be securely connected because it is necessary to transmit the operating force of the push button to the operating mechanism of the switch, and it is also important that they can be easily removed for maintenance or the like. With conventional technology,
For example, as shown in FIG. 1, the above connection is achieved by providing the holder 3 with a key 14 that engages with the housing 1 side, and a button 7 that releases the connection of this key when it is removed. However, in this configuration, the button 7 is necessarily located on the side of the holder 3, so if many pushbutton switches are installed in close proximity, it will be difficult to press this button, and special This causes inconveniences such as the need for tools.

The purpose of this invention is to provide an illuminated push button switch in which the key can be operated from the back of the holder rather than from the side, and therefore the holder can be easily attached and detached. Examples thereof will be described below with reference to the drawings.

In FIGS. 2 and 3, reference numeral 1 indicates a rectangular cylindrical housing, and 3 indicates a holder holding a switch unit 4.
It can be attached to a predetermined position on a panel (not shown) using a member 5 provided on its side. Further, a push button 6 is slidably attached to the housing 1. The housing 1 is provided with a cylindrical engagement tube 8, and an annular engagement groove 9 is provided below this tube. An engaging convex portion 10 is formed at the bottom of this groove, and inclined portions 11a and 11b are formed on both sides of this engaging convex portion, that is, above and below the convex portion 10 in the figure.

On the other hand, the holder 3 supports terminals 12, 12, one end of each of which constitutes a wrapping terminal that protrudes from the lower surface of the holder 3 by a predetermined length. Further, the switch unit 4 includes an arbitrary number of switches and an operating mechanism (none of which is shown) for simultaneously operating the switches.

Furthermore, a cylindrical engagement tube 8 is provided at one end of the holder 3.
A through hole 13 is formed into which the
A pair of keys 14, 14 that protrude into the engagement groove 9 provided on the outer peripheral surface of the tip end of the engagement tube 8 are perpendicular to the axis of the engagement tube 8 by a key guide 15 provided in the holder 3. It is supported so that it can move in the direction of Each key 14 has an inclined surface 16 at its tip, and in the direction in which it protrudes into the engagement groove 9.
The holder 3 is pressed by the action of the leaf spring 20 attached to the side surface, so in this state, the holder 3
is fixed to the housing 1 and cannot be removed. A sliding member 21 supported by the holder 3 is provided as a means for moving the key 14 in a direction in which it is removed from the engagement groove 9 so as to be movable in a direction perpendicular to the direction of movement of the key 14.
A crank-shaped bent portion 27 for restricting movement is provided at the intermediate portion of the sliding member 21, and the movement of the sliding member 21 is restricted by colliding with the stepped portion 32 of the spacer 31 fixed to the holder 3. are doing. Therefore, by pushing up this sliding member 21 from the back side of the holder 3 using a tool such as a common driver, the sliding member 21 is moved in its axial direction. Furthermore, the sliding member 21 has an inclined part 22 at one end that is inclined at a predetermined angle with respect to its axis. It selectively protrudes into the through hole 25 formed in the direction. The other end of the sliding member 21 extends toward the other end of the holder 3.

A spring 26 is housed in the holder 3,
One end abuts against the stepped portion 27 of the sliding member 21, and the other end abuts against the key guide 15, thereby causing the sliding member 21 to constantly move away from the key 14, that is, downward in the figure. It is energizing. A stepped portion 14 is formed at the edge of the hole 25 of the key 14 on the side facing the leaf spring 20 in the intermediate portion of the sliding member 21, that is, between the inclined portion 22 and the bent portion 27.
An engaging portion 28 is provided, which includes a notch portion 28a that engages with the key 14, and a key portion 28b formed by the notch portion, and this engaging portion and the stepped portion 14a of the key 14 form a holding portion. . The engaging portion 28 is adapted to engage with the stepped portion 14a of the key 14 when the sliding member 21 is pushed up a predetermined distance against the spring 26. An operation convex portion 29 is provided on the lower end side of the sliding member 21 and protrudes outward from a window 30 provided on the side of the holder 3 .

The dimension between the keys 14 and 14 is approximately equal to the outer diameter of the engagement groove 9 when the keys 14 and 14 protrude into the hole 13 due to the action of the leaf spring 20. It is designed so that when it is moved in the opposite direction to the biasing direction, that is, when the engaging portion 28 is engaged with the stepped portion 14a of the key, it becomes somewhat shorter than the outer diameter of the engaging convex portion 10. There is.

Note that the above-mentioned holding portion includes the sliding member 21 and the key 14.
The shape is not limited to that shown in the figure as long as it is provided between the two.

The state shown in FIG. 6 shows the state in which the housing 1 is attached to the holder 3, and the sliding member 21 is attached to the stepped portion of the holder by the biasing force of the spring 26.
It is in a state of collision with 1. Further, the keys 14, 14 are projected into the hole 13 by the biasing force of the leaf spring 20. When the holder 3 is engaged with the housing 1 in this state, the engagement cylinder 8 of this housing is inserted into the hole 1.
3, the inclined part 11a and the inclined part 16 of the key 14 come into contact with each other, and as a result, the key 14 retreats against the leaf spring 20. Furthermore, when the key 14 crosses the inclined part 11b, It engages with the groove 9 by the biasing force of the leaf spring 20. In this state, the housing 1 is attached to the holder 3 as shown in FIG. In this process, when the convex portion 10 comes into sliding contact with the inner end of the key 14, the engagement between the engaging portion 28 and the key 14 is released, so that the sliding member 21 returns to its original state due to the biasing force of the spring 26. pulled back into position.

Next, for example, when replacing a lamp (not shown), the housing 1 can be removed from the holder 3 as follows. That is, when the operating convex portion 29 is pushed upward from the other end of the holder 3, the sliding member 21 rises against the spring 26, and thereby the inclined portion 22 projects into the hole 25 of the key 14. At the same time, the keys 14, 14 are retreated outwardly against the leaf spring 20, and then the engaging portion 28 engages with the edge of the hole 25 of the key, and the engaged state is maintained while the keys 14, 14 is placed in a retreated position. When the housing 1 is pulled upward in this state, the engagement tube 8 is pulled upward while the inclined portion 11b is in sliding contact with the tip of the key 14. As a result, the key 14 moves further backward, and eventually the convex portion 10
Then, the inclined portion 11a comes into sliding contact with the key 14, and in this state, the cylinder 8 is pulled out from the hole 13. In this process, the convex portion 10 is attached to the key 14.
When the key 14 comes into sliding contact with the engaging portion 28, the engagement between the engaging portion 28 and the key 14 is released, and the sliding member 21 is therefore pulled back to its original position by the biasing force of the spring 26. Therefore, when the engagement cylinder 8 is pulled out from the hole 13, the keys 14, 14 are in a protruding position within the hole 13. Then, to attach the housing 1 to the holder 3 again, the same operation as before is sufficient.

As described above, according to this invention, the housing 1
The operations necessary for attaching and detaching the holder 3 to and from the holder 3 can be performed from the back side of the holder 3. Therefore, even when it becomes necessary to remove holder 3,
Its operation is extremely easy, and requires only ordinary tools such as a screwdriver, and no special tools are required.
Furthermore, the holder 3 accommodates a spring 26 that constantly biases the sliding member 21 in the direction away from the key 14.
There is no need to operate the sliding member 21 again when attaching it to the hole 13, and it can be done simply by pushing it into the hole 13, which has the advantage that the operation is as easy as an elbow.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing a conventional device, Fig. 2 is an external perspective view showing an embodiment of this invention, Fig. 3 is a plan view of the holder, Fig. 4 is a front sectional view of the holder, and Fig. 5 The figure is a bottom view of the holder, and FIGS. 6 to 9 are front sectional views of main parts for explaining the connection operation. DESCRIPTION OF SYMBOLS 1...Housing, 3...Holder, 4...Switch unit, 6...Push button, 8...Engagement tube, 9...Engagement groove, 10...Engagement convex portion, 13...
Through hole, 14...Key, 20...Spring, 22...Slanted portion, 25...Through hole, 26...Spring, 28
...Engagement part.

Claims (1)

[Scope of utility model registration request] The housing 1 has a housing 1 that supports a push button 6 and a holder 3 that supports a switch unit 4. The housing 1 has an engagement groove 9 and an engagement protrusion 10 formed at the bottom of the engagement groove. An engaging cylinder 8 is provided, and a through hole 13 is formed at one end of the holder 3, into which the engaging cylinder 8 enters. a key 14 that is movable between a position away from the engagement groove 9 and a position in which it slides into contact with the engagement convex portion 10; A spring 20 that is always biased, and a through hole 2 that moves with respect to the key 14 in a direction perpendicular to the direction of movement of the key 14 and that is provided in the key in a direction that intersects with the direction of movement.
5, and a spring 26 which is housed in the holder 3 and biases the sliding member 21 away from the key 14. One end is inserted into the key 14 by pushing into the through hole 25.
is provided with an inclined portion 22 for retracting from the through hole 13 against the spring 20, and extends the other end of the sliding member 21 toward the other end of the holder 3. When the sliding member 21 is pressed a predetermined distance against the spring 26, the key 14 and the sliding member 21 are engaged with each other;
A holding portion is provided that engages and holds the key 14 in a position retracted from the through hole 13, and in this held state, when the engaging tube 8 is inserted into and removed from the through hole 13, the sliding member 21 and the key 1
An illuminated push button switch that releases the engagement with 4.