JPH0730849Y2 - Lock with switch - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock with a switch capable of opening and closing a door and switching contacts of various electric devices by inserting and rotating a key. More specifically, a commercially available switch is provided at the rear end of the lock. For example, if you want to replace the lock, you can simply replace the lock without disconnecting the switch from electrical equipment, and if you replace the switch, replace the switch without removing the lock. It relates to a lock with a switch that is only required.

[0002]

2. Description of the Related Art Conventionally, as a lock with a switch, a key switch with a built-in switch is known. As shown in FIGS. 6 and 7, this key switch is rotated 90 degrees by inserting the key c into an elongated outer cylinder a having notched surfaces b on both sides. The cam f is inserted through the cylinder d, and the cam f is fitted and fixed in the outer cylinder a with a notch bolt e for rotation transmission that is integrally provided at the rear end of the inner cylinder d, and the switch g is attached to the cam f. The switch g is connected in an interlocking manner, and the switch g is integrally fixed by caulking with the tongues h, h at the rear end of the outer cylinder a. The outer cylinder a is attached to a mounting plate i for a door or various devices. Screw j
The key is fixed by holding it with a nut k that is screwed into
The switch is mounted.

The above-mentioned key switch rotates the cam f connected to the inner cylinder d by inserting and rotating the key c, and the connection terminal l of the switch g is connected with the rotation of the cam f. The connection of l can be switched instantly.

Therefore, in the conventional key switch, the switch g and the lock (outer cylinder, inner cylinder, etc.) must be made to fit together and assembled.

[0005]

As described above, in the conventional key switch, it is necessary to make a switch in accordance with the size of each lock or a lock in accordance with the size of the switch. As in the conventional example described above, the outer cylinder a of the lock is
Not only the one in which the switch g is fixed to the rear end by means such as caulking, but also the one in which the lock and the switch are exchangeably connected (not shown), the structure and dimensions of the lock or switch are special. Also, the switches are not compatible, and even commercially available switches with the same function had to be remade for the key switch because of the special structure and size of the lock.

Further, the lock with a built-in switch has a functional problem that the lock body is damaged, the key is lost, the lock needs to be replaced due to management reasons, or the switch is damaged or malfunctions. When a different switch is needed for the switch and the switch needs to be replaced, the entire key switch must be replaced.

The present invention has been made in view of the above problems of the above-mentioned conventional key switch. In the case where the key is lost or damaged, or the lock needs to be replaced due to management reasons. Also, even if it is necessary to replace the switch due to damage or functional reasons, it can be quickly replaced with a commercially available switch without processing or remaking the lock or switch. It is an object of the present invention to provide a lock with a switch that can be handled only by replacing a lock that is connected to an electric device.

[0008]

In order to achieve the above object, a lock with a switch of the present invention comprises an outer cylinder, an inner cylinder rotatably inserted therein, and a notch bolt projecting at a rear end thereof. At the rear end of the lock body, which is composed of a cylinder and a cam for controlling the rotation angle of the inner cylinder fixed to the cutout bolt, a switch case is provided.
And a switch cam that is rotatably arranged inside the switch, and the switch case and the switch cam are fitted and fixed to the outer cylinder of the lock body and the notch bolt, respectively. It is characterized by being detachably attached. Then, in the switch case, there is formed a relief portion of a cam for controlling the rotation angle of the inner cylinder fixed to a notch bolt at the rear end of the inner cylinder.

[0009]

When the door needs to be opened or closed or the contacts of various electric devices need to be switched, the key is inserted into the key hole of the inner cylinder of the lock and rotated by a predetermined angle (for example, 90 degrees), the inner cylinder is predetermined. And the switch cam of the switch fixed to the notch bolt of the inner cylinder is also rotated in a predetermined direction by a predetermined angle. When the cam is rotated, the push pin of the switch is pushed down by the cam, the movable contact is separated from one connection terminal, and the movable contact is connected to the other connection contact to switch the contact of the switch.

If the lock is damaged, the key is lost, or the lock needs to be replaced for management purposes, the lock can be removed from the switch by removing the nut from the notch bolt. The lock can be replaced while it is connected to various electric devices.

Further, in the case of a breakage failure of the switch, the nut can be removed from the notched bolt of the lock to remove only the switch and replace it with another commercially available switch.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the lock with switch
A lock main body 1 that is locked and unlocked by key-2, and a commercially available switch that is detachably fixed to the rear end of the lock main body 1 so that contacts are switched in association with locking and unlocking of the lock main body 1. 3 and 3.

As shown in FIGS. 1 to 3, the lock body 1 has a mounting hole 4 formed in a plate 4 of a door or various devices.
The asymmetrical portion 6 is fixed to the a by the nut 5 at the outer peripheral symmetrical position.
a and 6a are provided in the form of a notched screw tube, and the outer cylinder 6 is rotatably inserted into the outer cylinder 6 and is rotated 90 degrees by the key-2 insertion and rotation operation. A notched bolt 8 having notched circular portions 8a, 8a is integrally projectingly provided on the inner cylinder 7, and the notched bolt 8 of the inner cylinder 7 is fitted into the notched bolt 8, and a spring washer 10 is interposed in the notched bolt 8. And a cam 9 for restricting the inner cylinder rotation angle fixed by a nut 11 screwed together.

Further, as shown in FIG. 2, on the rear end surface of the outer cylinder 6, a protrusion 6b with which the notch 9a of the cam 9 is engaged.
2, the one end face 9b of the cutout 9a abuts against the projecting piece 6b as shown by the solid line in FIG. 2 and is held in the unlocked position of the lock body 1.

By rotating the cam 9 together with the inner cylinder 7 in the direction of arrow A in FIG. 2 by the key-2 insertion and rotation operation, the other end surface 9c of the notch 9a is projected onto the projecting piece 6b.
The protrusion 6b and the notch 9 so that the lock body 1 comes into contact with the lock body 1 and is prevented from rotating further.
a is set.

The cam 9 is provided at its center with a non-circular hole 9d corresponding to the cross-sectional shape of the cutout bolt 8 of the lock body 1, whereby the cutout bolt 8 is provided with the non-circular hole 9d.
It is fitted so as to rotate together with. Further, the outer diameter L of the cam 9 is formed to be substantially the same as that of the outer cylinder 6 so that the cam 9 together with the inner cylinder 7 is prevented from coming out of the outer cylinder 6 to the front (leftward in FIG. 1). And, as shown in FIG. 2, it is superposed on the rear end surface 6c of the outer cylinder 6.

As shown in FIGS. 1 to 4, the switch 3 is provided at its center with a non-circular hole 12a corresponding to the cross-sectional shape of the cutout bolt 8, and thereby the cutout bolt 8 is formed. Switch cam 12 that is fitted and connected
And a switch case 13 for rotatably supporting the switch cam 12, and a switch mechanism 14 built in the switch case 13.

The engaging projection 1 is formed on the inner peripheral surface of the circular hole 15 into which the switch cam 12 of the switch case 13 is fitted.
6, 6 and 16 are opposed to each other as shown in FIG.
The flange 17 of the switch cam 12 is engaged with 6 and 16 to prevent the switch cam 12 from coming out of the switch case 13.

The switch cam 12 is integrally formed with a cylindrical portion 18 having the above-mentioned non-circular hole 12a formed in the center thereof, and a pair of two rotating portions are provided on the outer peripheral surface thereof at a predetermined interval in the circumferential direction. Positioning recesses 19, 19a, 19b, 1
Two pairs of 9c are recessed.

On the other hand, as shown in FIG. 4, the switch case 13 has a substantially semi-circular shape on the front side and is provided with elasticity inside thereof, and the engaging projections 20a, 20a project on the inner surfaces of both ends, respectively. The positioning stopper 20 provided is integrally formed, and the engaging projections 20a, 20a are engaged with and disengaged from the pair of recesses 19, 19a and 19b, 19c of the cylindrical portion 18 of the switch cam 12 described above. The switch cam 12 is freely engaged and has a predetermined rotation angle (90 ° in the illustrated example).
It is designed to be held at

Further, the switch case 13 described above is
Cylindrical portion 21 fitted and externally fitted to the outer cylinder 6 of the lock body 1 described above.
Is integrally provided, the central hole 21a is provided in a non-circular hole corresponding to the outer shape of the cross section of the outer cylinder 6,
As a result, the switch case 13 is fitted and fixed to the outer cylinder 6.

By the way, the cam 9 of the lock body 1 is
Since the outer diameter L is set to be substantially the same as that of the outer cylinder 6 due to the prevention of the slip-out from the outer cylinder 6 and the provision of the notch 9a, the cam 9 is locked by the cam body 1
In order to fit the switch case 13 in the locked position and the unlocked position (the position shown by the solid line in FIG. 2), the outer periphery of the cam 9 is arranged at a right angle as shown in FIG.
The cutout portions 9e, 9e are formed corresponding to the cutout portions 6a, 6a of the outer cylinder 6.

However, when the cam 9 is locked by being rotated 90 degrees in the direction of the arrow A shown from the unlocked position shown by the solid line in FIG. 2, the rotation locus of the outer periphery of the cam 9 is shown in FIGS. As shown by the dotted line, the gap L is larger than the interval L between the two truncated circles 21b, 21b provided so as to face the inner peripheral surface of the central hole 21a of the cylindrical portion 21 of the switch case 13 described above. Then, the rotation of the cam 9 is blocked. Therefore, as shown in FIG. 3, the escape portions 21c, 21c of the cam 9 are cut out on the rotation locus of the cam 9 in the center hole 21a of the cylindrical portion 21 of the switch case 13.

As shown in FIGS. 1 and 2, the above-mentioned switch mechanism 14 is fixed to the case 14a, and the connection terminals 22, 23, 24 penetrating the switch case 13 are connected.
A movable terminal (not shown) that is biased by a spring (not shown) in a direction in which it is connected to and held by any one of the connection terminals 22 to 24, and the switch described above. When the lock body 1 is unlocked, it is fitted into the recess 12b formed in the outer periphery of the cam 12, and when the lock body 1 is locked, the outer peripheral surface 12c of the switch cam 12 that is interlocked with the lock body 1 pushes it down. The push button 25 pushes down the movable terminal against the spring force to separate it from one connection terminal and to contact the other connection terminal, thereby opening and closing the switch. .

Thus, the switch 3 having the above-described structure has the notch bolt 8 to the nut 11 of the lock body 1.
With the spring washer 10 removed, the switch cam 12 is fitted to the notch bolt 8 and the switch case 13 is fitted to the outer cylinder 6, and then the nut 11 is screwed into the notch bolt 8 with the spring washer 10 interposed. The lock body 1 is detachably attached to the rear end of the lock body 1 as shown in FIG.

The lock with a switch constructed in this way is
The key-2 inserted into the key hole (not shown) of the lock body 1 is rotated to rotate the inner cylinder 7 in a predetermined direction, and at the same time, the inner cylinder rotation angle fitted to the notch bolt 8 thereof. Control cam 9
And to rotate the switch cam 12 in the same direction,
Along with this, the outer peripheral surface 12c of the switch cam 12 pushes down the push button 25, and the push button 25 pushes down a movable terminal (not shown) to switch the connection terminals 22, 23, 24.

FIG. 5 shows another embodiment of the switch 3. In this switch 3, two connecting terminals 22 and 23 are penetrated through a switch case 13, and cutout surfaces 18a and 18 cut out on an outer peripheral surface of a cylindrical portion 18 of a switch cam 12 are formed.
A contact (not shown) elastically contacted with b by a spring (not shown) is pushed by the outer peripheral surface of the cylindrical portion 18 of the switch cam 12 against the spring force, so that both The connection of the connection terminals 22 and 23 is switched, and the other parts are configured in the same manner as the switch described above.

In the switch 3 of the present invention, a switch cam is rotatably provided in the switch case, which is rotated by the notch bolt 8 of the lock body 1 described above, in addition to the illustrated example. As a result, various commercially available switches configured to switch the connection of the connection terminals can be used.

[0029]

Since the present invention is constructed as described above, the switch cam 12 can be fitted into the notch bolt 8 of the lock body 1 to easily attach the commercially available switch 3. Unlike the conventional lock with a built-in switch, the outer cylinder and inner cylinder of the lock body 1, the cam of the switch, and the like are not formed to have a special size and shape.
And the switch 3 are compatible, and therefore, for example, when the lock body 1 is damaged or the key is lost, or when the lock needs to be replaced due to management reasons, the switch 3
Since it is only necessary to replace the lock that is connected to the electric device, workability is good and it is economical. In addition, even if the switch 3 is damaged or malfunctions, or if a functionally rich switch is required, only the switch 3 needs to be replaced, and a commercially available switch can be used as it is. In addition to being good, it is more economical.

[Brief description of drawings]

FIG. 1 is a view showing a lock according to an embodiment of the present invention.
FIG. 3 is a side view showing a partial cross section of a state in which the device is attached to a tray.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along the line BB in FIG.

FIG. 4 is a rear view of the switch of the embodiment shown in FIG.

FIG. 5 is a rear view showing another embodiment of the switch.

FIG. 6 is a side view showing a state in which a conventional key switch with a built-in switch is attached to a plate with a part cut away.

FIG. 7 is a plan view showing a state where the key switch shown in FIG. 6 is attached to a plate.

[Explanation of symbols]

 1 Lock Main Body 3 Switch 6 Outer Tube 7 Inner Tube 8 Notch Bolt 9 Cam for Rotating Angle of Inner Tube 12 Switch Cam 13 Switch Case 21c Relief Part

Claims (1)

[Scope of utility model registration request] 1. A notched screw-shaped outer cylinder having a cutout portion provided at a symmetrical position on the outer circumference, and the outer cylinder being rotatably inserted into the outer cylinder and rotated by inserting and rotating a key. A notched bolt having a notched portion at a position is fitted into the integrally formed inner cylinder and the notched bolt of the inner cylinder,
A lock body composed of an inner cylinder rotation angle regulating cam fixed to the notch bolt by a nut, a switch cam having a non-circular hole having a shape corresponding to the notch bolt at the center, and this switch cam Is rotatably supported and a non-circular hole having a shape corresponding to the outer cylinder is provided, and an escape portion of the cam is formed on the rotation locus of the cam for regulating the inner cylinder rotation angle of the hole. A switch case and a switch constituted by a switch mechanism built in the switch case, wherein the switch cam has a non-circular hole provided at the center thereof fitted to a notch bolt of the inner cylinder. On the other hand, while the switch case is fixed, the switch case is detachably attached to the lock body by fitting and fixing the non-circular hole provided in the center of the switch case to the cutout screw tubular outer cylinder. A lock with a switch.