JPS6235231Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an interlocking push button switch with a lock.

Generally, some operator keys such as ECRs (electronic cash registers) have multiple operator keys lined up, and when multiple operators use these keys, when one operator is operating the keys, other operators A locking mechanism is required to prevent operation. Furthermore, since a mechanism that can be operated only by a specific operator is required, a lock mechanism is required as a selection mechanism.

However, in the case of conventional operators such as ECRs, for example, as shown in FIG. Further, as shown in FIG. 2, a plurality of push button switches 4 are lined up and fixed to a frame 5, and by pressing down the key stem 6 of each push button switch 4, that key stem 6 is locked to the interlocking plate 7, and the other key stems 6 are pressed down. An interlocking type push button switch is used in which the interlocking plate 7 is operated to release the key stem 6 which had been pressed down earlier, and the key stem 6 is pushed up by the return spring 8. In the latter case, although simultaneous use could be prevented, one operator would release the switch while the other operator was using it.

In consideration of these points, the present invention has a mechanism that links a large number of lock switches, and is designed so that when one lock switch part is unlocked and in use, other lock switch parts become unusable even if they are unlocked. The present invention provides an interlocking pushbutton switch with a new locking mechanism, and its gist can be explained by referring to the reference numerals in the drawings. It is equipped with a plurality of cylinder locks each having a cylinder body 11 and a cylinder barrel 17 which is inserted into each cylinder hole 16 of the cylinder body 11 and is slidable in the axial direction and pivotable in the circumferential direction by inserting a key 20. , a stem 30 is provided at the bottom of the case body 10 and is located below each cylinder hole 16 and is movable up and down but not rotatable;
0 is urged upward by a spring 29 and is pivotally connected to the lower end of the cylinder barrel 17 via a moderation mechanism 36 that stops the cylinder barrel 17 at the end position of its pivoting operation. A switch contactor 43 is attached to the stem 30, and a lock claw 45 is provided protruding from the side surface of each stem 30, and the lock claw 45 is locked in the lowered position, and one of the lock claws 45 is located on the side surface of each stem 30. The cylinder barrel 17 is provided with a single stem lock interlocking plate 46 that is moved to the unlocking side when pushed down, and the cylinder barrel 17 has an upward rib 23 and a downward plate-like cam 25 on its outer periphery.
A rib locking groove 24 is provided in which the rib 23 fits into the lower end edge of the cylinder hole 16 to prevent the cylinder barrel 17 from rotating. It has a cam groove 28 into which each plate-shaped cam 25 is inserted when each cylinder barrel 17 is pushed down at an angle facing the stop groove 24, and a spring 27.
The cylinder barrel interlocking plate 26 is biased toward a position where the cam groove 28 aligns with the plate-shaped cam 25, and when each cylinder barrel 17 is pushed down, the lock pawl 45 of the stem 30 is interlocked for stem locking. While the cylinder barrel 17 is locked to the plate 46, the rib 23 of the cylinder barrel 17 is removed from the rib locking groove 24, and the plate-like cam 25 is moved into the cam groove 2.
By rotating the depressed cylinder barrel 17 in this state, the cylinder barrel interlocking plate 26 is slid through the plate cam 25 of the cylinder barrel 17, and the other cylinder barrel 17 is inserted into the cylinder barrel 17. This interlocking type push button switch with a lock is constructed such that a cam groove 28 corresponding to a plate-shaped cam 25 is deviated from the position of the plate-shaped cam 25 and cannot be pressed down.

Next, an example of implementation of the present invention will be described with reference to the drawings.

This interlocking push button switch with lock is case body 1
0 is composed of one cylinder body 11, a bottom case 12 fitted under the cylinder body 11, and side plates 13, 13 that connect and fix the cylinder body 11 and the bottom case 12. The bent end portion 13a is fitted into a groove 14 formed on the lower surface of both ends of the cylinder body 12, and a locking hole 13b at the upper end portion is locked with a projection 15 on both end surfaces of the cylinder body 11.

Vertical cylinder holes 16, 16... are opened vertically through the top surface of the cylinder body 11, and the cylinder holes 16, 16... are arranged in a line.

Cylinder barrels 17, 17, . . . are inserted vertically through each cylinder hole 16, 16, respectively. A key insertion hole 18 (shown in FIG. 7) is formed in the cylinder barrel 17 in the central axis direction, and a number of plate tumblers 19, 19... are provided intersecting with the key insertion hole 18.
9 and 19 are such that their tips can be drawn into the cylinder barrel 17 by inserting a predetermined key 20. Also, each plate tumbler 19, 19
When the key 20 is pulled out, the key 20 is urged in the protruding direction by a spring (not shown), and is fitted into a lock groove 21 formed on the inner surface of the cylinder hole 16.

In this way, each cylinder lock is configured, and when the key 20 is inserted, the cylinder barrel 17 is pushed down in the axial direction within the cylinder hole 16, making it slidable and rotatable at a predetermined angle. .

Further, a flange 22 is integrally formed on the lower outer periphery of the cylinder barrel 17 to protrude, and the flange 22 abuts against the lower surface of the cylinder body, thereby preventing the cylinder barrel 17 from coming off upward.

One rib 23 is provided on the upper surface of this flange 22.
(shown in FIGS. 5 and 7) is provided to protrude upward, and the rib 23 is connected to the rib locking groove 2.
4 by being fitted into the cylinder barrel 1
7 is prevented from rotating, and the cylinder barrel 1
7 can be raised to a predetermined locked position.

Furthermore, a plate-shaped cam 25 is provided on the outer peripheral surface of each cylinder barrel 17 below the flange 22 so as to protrude in the axial direction of the cylinder barrel 17 .

A cylinder barrel interlocking plate 26 is inserted into the case body 10 below each of the plate-shaped cams 25 so as to straddle the side plates 13, 13. The interlocking plate 26 is attached so as to be slidable in its longitudinal direction, and is biased to one side by a spring 27.

The interlocking plate 26 has cam grooves 28, 28, .
When the cylinder barrel 17 is pressed down, the plate-shaped cam 25 is inserted into the cam groove 28, and when the cylinder barrel 17 is pressed down, the cylinder barrel 1 is further inserted into the cam groove 28.
7 is rotated, the plate-shaped cam 25 comes into contact with the edge of the cam groove 28, pushes the inner surface, and slides the interlocking plate 26 against the spring 27.

In this way, the interlocking plate 26 is connected to one of the plate-shaped cams 2.
5, the other plate-shaped cams 25 are moved to the side where the corresponding cam grooves 28 are shifted from below the plate-shaped cam plate 25, and movement in the downward direction is prevented. Therefore, the cylinder barrel 17 having the plate-like cam plate 25 is maintained in a state in which the rib 23 on the outer peripheral surface thereof is fitted into the rib locking groove 24, and the non-rotatable state is maintained.

Each cylinder barrel 17 arranged in this way
The lower end of is connected to a stem 30 which is urged upward by a spring 29 so as to be rotatable by a predetermined angle.

This stem 30 is connected to the bottom plate 12a of the bottom case 12.
The stem is accommodated in a stem accommodation hole 31 formed above so as to be able to slide vertically and not rotate, and a connecting shaft portion 32 is integrally molded at the center of its upper end (as shown in FIG. 8). A shaft fitting hole 33 opened at the center of the lower end of the cylinder barrel 17 is rotatably fitted into the cylinder barrel 17.

The cylinder barrel 17 communicates with the shaft fitting hole 33.
Fan-shaped window holes 34, 34 are opened symmetrically from the center thereof, and a connecting pin 35 is passed through the connecting shaft portion 32 through the window holes 34, 34.

A rotation moderation mechanism 36 is provided between the upper end surface of the stem 30 and the lower end surface of the cylinder barrel 17. This moderation mechanism 36 includes a steel ball accommodation hole 37 formed on the upper end surface of the stem 30, a moderation steel ball 39 accommodated in the steel ball accommodation hole 37 with a spring 38 biased in the projecting direction, and a cylinder barrel 17. It consists of two moderation holes 40, 40 formed on the lower end surface of the steel ball 39 into which the steel ball 39 is inserted.

A printed circuit board 41 (shown in FIGS. 6 and 7) on which a switch circuit is wired is fixed to the inner surface of the stem accommodating hole 31 facing one side of the stem 30 arranged in this way, and its connecting terminal portion 41a is the bottom plate 1
2a and protrudes below the case body 10. A contact accommodating groove 42 is formed on the side surface of the printed circuit board 41 of the stem 30, into which a contact 43 is fitted, and the switch circuit of the printed circuit board 41 is closed when the stem 30 is pushed down.

On the surface of each stem 30 opposite to the contact housing groove 42, a vertically elongated lock pawl rib 44 is provided protruding in the same direction, and on one side of each rib 44, a slightly upward lock pawl 45 is provided. are protruding from each. The lower part of the lock pawl 45 is formed into a smooth tapered shape and serves as a cam portion 45a for an interlocking plate.

A stem lock interlocking plate 46 is provided which slides in the horizontal direction by the cam portion 45a of the lock pawl 45 and is engaged with the lock pawl 45. This interlocking plate 46 is supported across both side plates 13, 13, and is biased to one side by a spring 47.

Furthermore, the interlocking plate 46 has notches 48, 48, .
4, 44..., and each lock pawl 45 is locked to each pawl locking edge 48a, 48a..., and when the lock pawl 45 is pushed down, the cam portion 45a is the claw locking edge 4
8a to slide the interlocking plate 46 against the spring 47, and when it is further pushed down, it is automatically locked, the stem 30 is kept in the depressed state, and the cylinder barrel is also inevitably in the depressed state. . When the other stem 30 is pressed down, the interlocking plate 46 is similarly slid, thereby releasing the locking state of the previous lock pawl 45.

In addition, 49 in the figure is a release button, and this release button 49 is a release button hole 16 drilled in the cylinder body 11.
It is accommodated in the cylinder barrel 17 so as to be movable up and down, and has a protruding plate-like cam 25 similar to the cylinder barrel 17 described above, and is connected to the stem 30. When pushed down, the release button 49 itself is not locked, but is interlocked for stem locking. When the plate 46 is operated and one of the cylinder barrels 17 is pushed down and rotated, the lower end of the plate-like cam 25 comes into contact with the cylinder barrel interlocking plate 26 and is prevented from being pushed down. That's what I do.

In the interlocking push button switch with a lock constructed as described above, the cylinder lock is unlocked by inserting the key 20 into the cylinder barrel 17.

In this state, by pressing the key top 20a of the key 20, the cylinder barrel 17 and stem 3
0 is pushed down, thereby pushing down the contact 43 and closing the switch circuit on the printed circuit board 41. At this time, the lock claw 45 of the stem 30
pushes the interlocking plate 46, is further pushed down and is locked by the pawl locking edge 48a, and the pressed down state is maintained.

Further, when the cylinder barrel 17 is pushed down, the plate-shaped cam 25 at the lower end thereof is inserted into the cam groove 28 of the interlocking plate 26, and the lock pawl 4 is locked.
5 will prevent it from rising.

Thereafter, by rotating the key top 20a, the cylinder barrel 17 is rotated by a certain angle, whereby the plate-shaped cam 25 is rotated while being in contact with the edge of the cam groove 28, and the interlocking plate 26 is rotated by the spring. 27, the cylinder barrel 17 is held in a rotated state by the moderation mechanism 36, and the interlocking plate 26 is stopped in the slid state.

As a result, each cam groove 28 corresponding to the plate-shaped cam 25 of each other cylinder barrel 17 is shifted from the lower end of each plate-shaped cam 25, and the other cylinder barrels 17 are prevented from being pushed down.

In addition, by rotating the cylinder barrel 17 in the opposite direction to the original position, it is possible to push down the other cylinder barrel 17, and by pushing down either the cylinder barrel 17 or the release button 49, the stem lock can be locked in the same manner as described above. interlocking plate 46
is activated, and lock claw 4 is pushed down first.
5 is released, and the spring 29 pushes up the stem 30 to push up the cylinder barrel 1.
7 to the locked position and the key 20 is pulled out to lock the door. When using this switch, the operator inserts the key 20, pushes down the cylinder barrel 17, and locks the lock pawl 45 into the interlocking plate 46.
The cylinder barrel 17 can be rotated when the operator leaves his/her seat while still having to use the ECR. The other cylinder barrel 17 can be kept in a state where it cannot be pushed down.

Furthermore, in the above embodiment, the length of the rib 23 in the drawing is approximately the same as the reciprocating stroke in the axial direction of the cylinder barrel 17, but the length of the rib 23 is such that the cam groove 28 of the interlocking plate 26 is Any length is sufficient as long as it fits into the rib locking groove 24 and makes the cylinder barrel 17 unrotatable when the cylinder barrel 17 is displaced from the shaped cam 25 and cannot be pushed down.

In the above-mentioned embodiment, the key 20 can be pulled out, that is, locked, only when the cylinder barrel 17 is in the raised position, but in the present invention, locking can be performed even when the cylinder barrel 17 is pushed down and rotated. It is also possible to make the stem 3 corresponding to any one cylinder lock part
Alternatively, the switch mechanism comprising the contacts 43 and the printed circuit board 41 for the switch circuit may be omitted and used as an unlocking key or a locking master key.

The interlocking push button switch with a lock of the present invention is constructed as described above, and has a plurality of cylinder locks each having a stem for switching operation, the stem has a lock pawl, and an interlocking plate that is interlocked with the lock pawl is used. By equipping the barrel with a plate-shaped cam and using an interlocking plate that interlocks with this, it becomes impossible to press down any other key while one key is in use, and it is possible to press down other keys. In this case, when this is pressed down, the stem that was pressed down first is inevitably raised, closing only one switch mechanism, especially when used as an operator key for ECR etc. This also satisfies the need to prevent multiple operators from using the key at the same time, and to ensure that a given operator key cannot be operated unless a key owned by a specific operator is used.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional lock switch, Fig. 2 is a plan view of a conventional interlocking switch, Fig. 3 is an overall plan view showing an example of the implementation of the present invention, and Fig. 4 is a front view of the same. , FIG. 5 is a partially omitted longitudinal sectional front view, FIG. 6 is a cross-sectional view of the same, FIG. 7 is a longitudinal sectional side view of the same, FIG. 8 is a vertical sectional view showing the connection portion between the cylinder barrel and the stem, and FIG. The figure is a sectional view taken along the - line in FIG. 8. 10...Case body, 11...Cylinder body, 12...Bottom case, 12a...Bottom plate, 13
... Side plate, 16 ... Cylinder hole, 17 ... Cylinder barrel, 18 ... Key insertion hole, 19 ... Plate tumbler, 20 ... Key, 21 ... Locking groove, 2
2...Flange, 23...Rib, 24...Rib locking groove, 25...Plate cam, 26...Cylinder barrel interlocking plate, 27...Spring, 28...Cam groove, 29...Spring, 30... Stem, 3
1... Stem accommodation hole, 32... Connection shaft portion, 33...
...Shaft fitting hole, 34...Window hole, 35...Connecting pin,
36... Rotating moderation mechanism, 37... Steel ball accommodation hole, 3
8...Spring, 39...Steel ball for moderation, 40...
...Mode hole, 41...Printed circuit board, 41a...Connection terminal section, 42...Contact housing groove, 43...Contact, 44...Lock claw rib, 45...Lock claw, 45a...Cam section , 46... Stem lock interlocking plate, 47... Spring, 48... Notch.

Claims (1)

[Scope of utility model registration request] A plurality of cylinder holes 1 are provided at the top of the case body 10.
6 is opened, and a cylinder barrel 17 is inserted into each cylinder hole 16 of the cylinder body 11 and is slidable in the axial direction and pivotable in the circumferential direction by inserting a key 20. A plurality of cylinder locks are provided, and each cylinder hole 1 is provided at the bottom of the case body 10.
6. Stem 3 located below and can move up and down but cannot rotate.
0, the stem 30 is biased upward by a spring 29, and a moderation mechanism 36 that stops the cylinder barrel 17 at the end of its pivoting motion relative to the lower end of the cylinder barrel 17.
A switch contactor 43 is attached to each stem 30, and a lock pawl 45 is provided protruding from the side surface of each stem 30 so that the lock pawl 45 is engaged in the lowered position. The cylinder barrel 17 has an upwardly directed rib 23 on its outer periphery. A rib locking groove 24 in which a downward plate-shaped cam 25 is protruded, and the rib 23 fits into the lower edge of the cylinder hole 16 to prevent the cylinder barrel 17 from rotating.
The case body 10 has a cam groove 28 in which each plate-shaped cam 25 is passed through when each cylinder barrel 17 is pushed down at an angle such that the rib 23 faces the rib locking groove 24, and a spring. 27, the cylinder barrel interlocking plate 26 is biased toward the position where the cam groove 28 aligns with the plate-shaped cam 25, and each cylinder barrel 17 is pushed down and the lock pawl 45 of the stem 30 is used for stem locking. While the cylinder barrel 17 is locked to the interlocking plate 46, the rib 23 of the cylinder barrel 17 is removed from the rib locking groove 24, and the plate-shaped cam 25 is inserted into the cam groove 28. By rotating, the cylinder barrel interlocking plate 2 is moved through the plate-like cam 25 of the cylinder barrel 17.
6 is slid, and the cam groove 28 corresponding to the plate-shaped cam 25 of the other cylinder barrel 17 is shifted from the position of the plate-shaped cam 25, so that it cannot be pressed down. .