KR102631966B1 - Interlock locking device - Google Patents

Abstract

The present invention provides an interlock locking device that prevents the loss of keys, maintains multiple locks, increases safety and security, and prevents accidents that result in closing a hazardous area or restarting a facility without detecting a worker. There is a purpose.
For this purpose, the present invention includes a case with a space formed inside, a first key connection part installed in the case and into which the first key is inserted, and when the first key connection part is rotated, it rotates in conjunction with the first key connection part. A first cam part that is installed in the case and a second key connecting part into which a second key is inserted, a second cam part that rotates in conjunction with the second key connecting part when the second key connecting part is rotated, and a forward or backward movement and a locking portion capable of restraining the rotation of the second cam portion. The first cam portion includes a first rotation groove that enables rotation of the second cam portion, and a first rotation groove that enables rotation of the second cam portion. A first locking protrusion that interferes is formed along the circumferential direction, and the second cam portion includes a second rotation groove that enables rotation of the first cam portion, a second locking protrusion that impedes rotation of the second cam portion, and A locking groove into which the rod is inserted is formed along the circumferential direction, the rod is inserted into the locking groove, and the first locking protrusion of the first cam portion and the second rotation groove of the second cam portion are arranged to face each other. Provides an interlock locking device characterized in that the lock is maintained.

Description

Interlock locking device

The present invention relates to an interlock locking device. Specifically, the multiple locking function that unlocks in succession increases security, and whether the key can be separated depending on the locking state is determined to prevent the loss of the key and reduce risks during work. It is about an interlock locking device that prevents

In general, places that do not normally allow access, such as dangerous areas or security areas, usually block access through structures such as doors and locks.

At this time, if access to the area is required, the worker or person in charge unlocks the lock using the key, and when access is temporarily made possible, the worker approaches and closes the area again after the work is completed.

However, in this case, there are cases where the worker inside cannot be found and the area is closed again or the key is lost. In particular, if the area is closed without finding the workers inside, it can cause a major safety problem. Additionally, when the lock is managed with a single key, there are cases where accidents occur because procedures are ignored for the sake of convenience.

Likewise, when performing maintenance and repair work on various facilities, the operation status of the facility may be controlled through the key for safety reasons, but it may not be effective for the above reasons.

Republic of Korea Registered Utility Model Publication No. 20-0408357 (Title of invention: Underground facility entrance door lock, Registration date: 2006.02.02.)

The present invention is intended to solve the problems of the prior art as described above, and its purpose is to provide an interlock locking device that improves security and prevents the loss of keys.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above-described problem, the interlock locking device provided by the present invention includes a case with a space formed inside, a first key connection part installed in the case and into which the first key is inserted, and the first key connection part. A first cam part that rotates in conjunction with the first key connector when rotated, a second key connector installed in the case and into which a second key is inserted, and a second key connector when the second key connector is rotated. a second cam unit that is interlocked and rotates together; and a locking part installed in the case, having a rod that moves forward or backward, and capable of restricting the rotation of the second cam part, wherein the first cam part has a first rotation part that enables rotation of the second cam part. A groove and a first locking protrusion that prevents rotation of the second cam portion are formed along the circumferential direction, and the second cam portion includes a second rotation groove that enables rotation of the first cam portion, and a second locking protrusion that prevents rotation of the second cam portion. A second locking protrusion that prevents rotation and a locking groove into which the rod is inserted are formed along the circumferential direction, the rod is inserted into the locking groove, and the first locking protrusion of the first cam portion and the second locking protrusion of the second cam portion are formed. Multiple locking can be maintained with the rotation grooves facing each other.

In addition, the rod of the locking unit moves forward or backward by power, and the locking unit may include a manual pin that allows manually controlling the forward or backward motion of the rod when the power supply is cut off.

In addition, in a state where the first locking protrusion of the first cam part and the second rotation groove of the second cam part are arranged to face each other, the rod of the locking part is inserted into the locking groove of the second cam part, and the first key is The first key connector may be inserted into or separated from the first key connector, and the second key may not be separated from the second key connector.

And, in a state where the first rotation groove of the first cam portion and the first locking protrusion of the second cam portion are arranged to face each other, the rod of the locking portion is separated from the locking groove of the second cam portion, and the first key is not separated from the first key connecting portion, and the second key may be inserted into or separated from the second key connecting portion.

In addition, the second cam portion is formed to protrude from the rear and includes a contact protrusion that rotates together with the second cam portion, and when the rod is separated from the locking groove and the second cam portion is rotated, it comes into contact with the contact protrusion. It may further include a switch through which an on signal is generated.

Additionally, the case may include a heat dissipation hole formed in a zigzag shape to allow heat from the locking unit to be discharged to the outside and to prevent external foreign substances from entering the interior of the case.

Here, a pair of first rotation grooves are provided in the first cam portion, and the pair of first rotation grooves may be formed symmetrically on both sides of the first cam portion.

According to the interlock locking device according to the present invention, the following effects are achieved.

First, the interlock lock maintains multiple locking states, providing excellent security.

Second, in the locked state of the interlock lock, the first key cannot be separated from the first key connection part, and in the unlocked state of the interlock lock device, the second key cannot be separated from the second key connection part, making it unusable. Unnecessary loss of keys can be prevented.

Third, by having the worker personally carry the detachable key and perform locking or unlocking together, it is possible to prevent safety accidents that may occur without the worker being discovered.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the description of the claims.

Figure 1 is a perspective view of an interlock locking device according to an embodiment of the present invention.
Figure 2 is a perspective view showing the parts installed inside the case of the interlock locking device of Figure 1.
Figure 3 is a diagram showing the locked state of the first cam part, the second cam part, and the locking part of the interlock locking device of Figure 1.
FIG. 4 is a diagram showing a state in which the first cam portion, the second cam portion, and the lock portion of the interlock locking device of FIG. 1 are unlocked.
FIG. 5 is a diagram illustrating a state in which the first key is separated from the locked state of the interlock locking device of FIG. 1.
FIG. 6 is a diagram illustrating a state in which the second key is separated while the interlock lock device of FIG. 1 is unlocked.
Figure 7 is a diagram showing a modification of the interlock locking device of Figure 1.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The sizes and shapes of components shown in the drawings attached to this specification may be exaggerated for clarity and convenience of explanation. It should be noted that the same configuration may be indicated by the same reference numeral in each drawing. Additionally, detailed descriptions of the functions and configurations of known technologies that are judged to unnecessarily obscure the gist of the present invention may be omitted.

The terms used herein are used to describe specific embodiments and are not intended to limit the invention. As used herein, the singular forms include the plural forms unless the context clearly indicates otherwise. In addition, throughout this specification, when a part “includes” a certain element, this means that it may further include other elements unless specifically stated to the contrary.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is said to be “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Other expressions to describe relationships between components should be interpreted similarly.

Terms such as top, bottom, upper side, lower side, etc. used in this specification are used to distinguish the relative positions of components. For example, for convenience, if the upper part of the drawing is called upper and the lower part of the drawing is called lower, in reality, the upper part can be called lower, and the lower part can be called upper, without departing from the scope of the present invention. .

Terms containing ordinal numbers, such as ~first~, ~second~, etc. described in this specification may be used to describe various components, but the components are not limited by the terms. The above terms are only used to distinguish each component from another, and are not limited by the manufacturing order, and the names may not match in the detailed description and claims of the invention.

All terms, including technical or scientific terms, used in this specification have the same meaning as generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in this specification, should not be interpreted in an idealized or overly formal sense. No.

Hereinafter, the present invention will be described with reference to the drawings to explain an interlock locking device according to an embodiment of the present invention.

Figure 1 is a perspective view of an interlock locking device according to an embodiment of the present invention, Figure 2 is a perspective view showing the parts installed inside the case of the interlock locking device of Figure 1, and Figure 3 is a perspective view of the interlock locking device of Figure 1. It is a diagram showing the locked state of the first cam part, the second cam part, and the locking part of the locking device, and FIG. 4 is a drawing showing the unlocked state of the first cam part, the second cam part, and the locking part of the interlock locking device of FIG. 1. , FIG. 5 is a diagram showing a state in which the first key is separated in a locked state of the interlock locking device of FIG. 1, and FIG. 6 is a diagram showing a state in which the second key is separated while the interlock locking device in FIG. 1 is unlocked. This is a drawing showing the state in which FIG. 7 is installed, and FIG. 7 is a drawing showing a modification of the interlock locking device of FIG. 1.

Referring to Figure 1 or Figure 2, the interlock locking device 100 according to an embodiment of the present invention includes a case 110, a first key connection part 120, a first cam part 130, and a second cam part ( 150), a second key connection unit 140, a lock unit 160, and a switch 170.

The case 110 has a space formed inside, and parts constituting the interlock locking device 100 can be installed inside the case 110.

Additionally, a heat dissipation hole 111 may be formed on the side of the case 110 to dissipate heat generated from the locking unit 140.

If the heat dissipation hole 111 is formed in a straight shape, there is a risk that an elongated material such as a pin may penetrate into the inside of the case 110 and damage the components of the interlock locking device 100. Therefore, as shown in FIG. 1, the heat dissipation hole 111 of this embodiment is preferably formed in a zigzag shape to prevent foreign substances from entering the inside of the case 110.

The first key connection unit 120 may be installed in the case so that the first key 121 can be accessed. The second key connection unit 140 may be installed in the case so that the second key 141 can be connected.

The first cam unit 130 is installed in the internal space of the case 110, and is interlocked with the first key connection unit 120 and rotates together when the first key connection unit 120 is rotated. The first cam part 130 has a first rotation groove 131 that enables rotation of the second cam part 150 and a first locking protrusion 132 that can restrict the rotation of the second cam part 150 in the circumferential direction. It can be formed according to .

The second cam unit 150 is installed in the internal space of the case 110, and is interlocked with the second key connection unit 140 and rotates together when the second key connection unit 140 is rotated. The second cam unit 150 includes a second rotation groove 151 that enables rotation of the first cam unit 130, a second locking protrusion 152 that can restrict the rotation of the first cam unit 130, and a second A locking groove 153 into which the rod 161 of the locking portion 160 is inserted may be formed along the circumference so that the rotation of the cam portion 150 is restricted.

The locking unit 160 is installed in the internal space of the case 110 and may be provided with a rod 161 and a spring 162. Preferably, the locking unit 160 may be provided as a solenoid device that is operated by receiving power. The rod 161 may be inserted into the locking groove 153 of the second cam unit 150 to restrict the rotation of the second cam unit 150. Additionally, the rod 161 can be retracted by receiving power. When the force reversing the rod 161 is removed, the rod 161 can be moved forward again by the spring 162.

In addition, when the power supply is cut off and the load 161 cannot move backward and the interlock lock 100 cannot be unlocked, a manual method is provided to manually control the forward or backward motion of the load 161. A pin 163 may be provided. The passive pin 163 may be interlocked with the rod 161 and protrude to the outside of the case 100. Therefore, when the power supply is cut off, the rod 161 can be moved forward or backward by manipulating the manual pin 163 by hand.

Referring to Figures 3 and 4, the interlock locking device 100 is arranged so that the first locking protrusion 132 of the first cam part 130 and the second rotation groove 151 of the second cam part 150 face each other. By inserting the rod 161 of the locking part 160 into the locking groove 153 of the second cam part 150, the interlock locking device 100 can be maintained in multiple locks. This state is the locked state of the interlock locking device 100.

Since the rod 161 of the locking part 160 is inserted into the locking groove 153 of the second cam part 150, the second cam part 150 does not rotate, and the second cam part 150 is connected to the first cam part. Because it is caught in the first locking protrusion 132 of (130), the second cam portion 150 also does not rotate. Therefore, the interlock locking device 100 can maintain multiple locking states.

In order to unlock the interlock locking device 100, first, the rod 161 of the locking part 160 is separated from the locking groove 153 of the second cam part 150, and then the first cam part 130 is rotated so that the first rotation groove 131 is adjacent to the second cam portion 150, and finally, the second cam portion 150 is rotated so that the first rotation groove 131 and the second locking protrusion 152 are You can make them face to face. At this time, when the interlock locking device 100 is unlocked, the contact protrusion 154 and the contact portion 171 of the second cam portion 150 come into contact, thereby generating a signal from the switch 170 and preventing entry into the danger zone. Permission may be granted or the operation of the facility may be stopped.

Referring to FIGS. 3 and 4 , the interlock locking device 100 may be provided with a switch 170 at the rear portion of the first cam portion 130 and the second cam portion 150. The switch 170 does not generate a signal when the interlock locking device 100 is in a locked state.

However, when the interlock locking device 100 is unlocked, an on signal is generated by contact between the contact protrusion 154 and the contact portion 171 located on the rear side of the second cam portion 150.

The switch 170 is connected to an opening/closing device in a specific area and can temporarily allow access by generating an on signal when the interlock lock 100 is unlocked. Additionally, when a signal is generated when the switch 170 is connected to a specific facility, the operation of the facility can be stopped and maintenance or repair work can be performed.

Referring to FIG. 5, when the interlock locking device 100 is in a locked state, the first key 121 is separable from the first key connection unit 120, and the second key 141 is a second key connection unit ( 140) may not be separated from it. In addition, referring to FIG. 6, when the interlock locking device 100 is unlocked, the first key 121 is not separated from the first key connecting unit 120, and the second key 141 is It may be separable from the second key connection unit 140.

When the interlock lock device 100 is in a locked state, the first key 121 can be separated, and when the interlock lock device 100 is unlocked, the second key 141 can be separated. For example, if there is a main workroom and a sub-workroom inside the main workroom, the structure may be necessary for the safety of workers working in the sub-workroom.

In other words, in a workplace structure where there is a main workroom and a sub-workroom inside the main workroom, it is essential to confirm that the worker in the sub-workroom leaves the room and close the door to the main workroom. If the worker in the main workroom closes the door while the worker in the sub workroom is present, the worker in the sub workroom may become trapped and isolated inside.

First, as shown in Figure 5, when the interlock locking device 100 is in the locked state, the door of the main workroom is opened by the off signal of the switch 170, and as shown in Figure 6, the interlock locking device ( When 100) is unlocked, the door of the main workroom is set to be closed by the on signal of switch 170.

When starting work, the door of the main workroom is opened and the worker in the sub workroom can enter the sub workroom with the first key 121 and proceed with work. In this situation, even if the worker in the main workroom tries to close the door of the main workroom after work is completed, the door of the main workroom cannot be closed because the first key 121 is not present. The door of the main workroom can be closed only after the worker from the sub workroom safely comes out and directly inserts the first key 121. Additionally, loss of the second key 141, which cannot be used in a locked state, can be prevented by preventing it from being separated from the second key connecting unit 140.

In addition, a worker in the main workroom who is a manager can safely manage the entire workspace while holding the second key 141. As shown in Figure 6, when the interlock locking device 100 is unlocked and the door of the main workroom is closed,

Even if the worker in the sub-workroom tries to open the door without the permission of the worker in the main workroom, the door of the main workroom cannot be opened because there is no second key 141. Only after the operator of the main workroom directly inserts the second key 141 can the door of the main workroom be opened. Additionally, loss of the first key 121, which cannot be used in an unlocked state, can be prevented by preventing it from being separated from the first key connection unit 120.

It is easy to maintain safety and security by sequentially inducing the interlock lock device 100 to be locked or unlocked according to safety and security procedures, and the key, which cannot be used anyway, is not separated from the key connection part so that the key loss can be prevented.

Referring to FIG. 7, according to a modification of the present invention, the first cam portion 230 may have a pair of first rotation grooves 231a and 231b formed symmetrically on both sides. When the first cam unit 230 is provided with a pair of first rotation grooves (231a, 231b), even when multiple first cam units 230 are used, it is formed as one part with a pair of first rotation grooves (231a, 231b). Devices can be configured to reduce the overall number of parts to be managed.

In addition, even when the number of managers of the locking device increases and a plurality of first cam units 230 must be installed, the same first cam unit 230 can be used, so the steps required to unlock the interlock locking device 100 can be added. It's easy.

When a plurality of first cam units 230 are installed, a pair of first rotation grooves 231a and 231b enable rotation of the adjacent first cam unit 230 or second cam unit 150, and the first locking protrusion 132 ) may restrict the rotation of the adjacent first cam unit 230 or second cam unit 150. At this time, the interlock locking device 100 sequentially unlocks the plurality of first cam parts 230, and the rod 161 of the locking part 160 is separated from the locking groove 153 to form a second cam part 150. ) can be unlocked by being unlocked. Therefore, safety and security can be further increased by additionally providing the first cam unit 230 in accordance with security and safety procedures, or by having each manager manage the keys.

As described above, preferred embodiments of the present invention have been shown and described with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the above-described specific embodiments, and the present invention can be modified without departing from the gist of the present invention as claimed in the patent claims. Of course, various modifications can be made by those skilled in the art in the technical field to which the invention belongs, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

100: Interlock lock
110: case
120: first key connection part
121: 1st key
130: 1st cam part
140: Second key connection part
141: 2nd key
150: 2nd cam part
160: locking part

Claims (7)

A case with a space formed inside;
a first key connection unit installed in the case and into which a first key is inserted;
a first cam unit that rotates in conjunction with the first key connection unit when the first key connection unit is rotated;
a second key connection unit installed in the case and into which a second key is inserted;
a second cam unit that rotates in conjunction with the second key connection unit when the second key connection unit is rotated; and
It includes a locking part installed in the case, having a rod that moves forward or backward, and capable of restricting the rotation of the second cam part,
A first rotation groove that enables rotation of the second cam portion and a first locking protrusion that prevents rotation of the second cam portion are formed along the circumferential direction in the first cam portion,
In the second cam portion, a second rotation groove that enables rotation of the first cam portion, a second locking protrusion that prevents rotation of the second cam portion, and a locking groove into which the rod is inserted are formed along the circumferential direction,
The interlock locking device is characterized in that multiple locking is maintained when the rod is inserted into the locking groove and the first locking protrusion of the first cam portion and the second rotation groove of the second cam portion are arranged to face each other. According to clause 1,
The rod of the locking unit is moved forward or backward by power,
The locking unit is an interlock locking device characterized in that it includes a manual pin to manually control the forward or backward motion of the rod when the power supply is cut off. According to clause 1,
With the first locking protrusion of the first cam unit and the second rotation groove of the second cam unit arranged to face each other,
The rod of the locking portion is inserted into the locking groove of the second cam portion,
An interlock locking device, wherein the first key can be inserted into or separated from the first key connection part, and the second key is not separated from the second key connection part. According to clause 1,
In a state where the first rotation groove of the first cam portion and the second locking protrusion of the second cam portion are arranged to face each other,
The rod of the locking portion is separated from the locking groove of the second cam portion,
An interlock locking device, wherein the first key is not separated from the first key connection part, and the second key can be inserted into or separated from the second key connection part. According to clause 1,
The second cam portion includes a contact protrusion that is formed to protrude from the rear and rotates together with the second cam portion,
When the rod is separated from the locking groove and the second cam portion is rotated, a switch that generates an on signal by contact with the contact protrusion. According to clause 1,
The case is an interlock locking device characterized in that it includes a heat dissipation hole formed in a zigzag shape to allow heat from the locking unit to be discharged to the outside and to prevent external foreign substances from entering the inside of the case. According to clause 1,
A pair of first rotation grooves are provided in the first cam portion,
An interlock locking device, characterized in that the pair of first rotation grooves are symmetrically formed on both sides of the first cam portion.

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