KR20230125531A - Multi-purpose locking apparatus - Google Patents

Abstract

A multi-purpose locking device according to an embodiment of the present invention includes a vertically movable and rotatable locking unit; and maintaining the locking unit in a locked state by rotating the locking unit by a predetermined angle when the driving voltage is applied for a predetermined period of time but is not applied, and when the driving voltage is applied for a predetermined period of time but is not applied again, the locking unit rotates the locking unit at a predetermined angle and a driving unit for maintaining the locking unit in an unlocked state by rotating the locking unit as much as possible.

Description

Multi-purpose locking apparatus {Multi-purpose locking apparatus}

The present invention relates to a multi-purpose lock device that can be maintained in a locked or unlocked state without the need to continuously receive a driving voltage.

A battery locking device is used to secure an object to be locked or unlocked, particularly a battery or battery pack used in an electric vehicle.

However, since the conventional battery lock device needs to continuously receive a driving voltage to maintain the unlocked or locked state, power is continuously consumed to maintain the unlocked or locked state.

Accordingly, there is a need for a multi-purpose locking device capable of maintaining an unlocked state or a locked locked state even without a continuous supply of driving voltage.

KR 10-2312041 B1

An object to be solved by the present invention is to provide a multi-purpose locking device capable of dramatically reducing power consumption because it can be maintained in an unlocked state or a locked state even when a driving voltage is not continuously supplied.

Another problem to be solved by the present invention is that the manufacturing process is simple because it has a simple structure, and the object can be kept in a locked or unlocked state by simply turning on/off a switch that regulates the supply of driving voltage. It is to provide a multi-purpose locking device capable of switching an object to a locked or unlocked state.

Another problem to be solved by the present invention is a multi-purpose locking device capable of easily attaching and detaching an object that needs to be locked or unlocked by maintaining an object in a locked or unlocked state according to the rotation state of the locking device. is to provide

Multipurpose locking device according to an embodiment of the present invention for solving the above problems,

a locking unit movable up and down and rotatable; and

When the driving voltage is applied for a predetermined period of time but is not applied, the locking unit is rotated by a predetermined angle to maintain the locking unit in a locked state. It may include a driving unit that rotates and maintains the locking unit in an unlocked state.

In the multipurpose locking device according to an embodiment of the present invention, the drive unit,

a push member movable up and down;

a cam that moves up and down or rotates in a predetermined direction according to the up and down movement of the push member;

a push member lifting and lowering unit configured to raise a shaft to raise the push member when a driving voltage is applied and to lower the push member by lowering the shaft when a driving voltage is not applied; and

A plurality of guides guiding movement of the push member and the cam may be included.

In addition, the multipurpose locking device according to an embodiment of the present invention,

a housing having open upper and lower sides, accommodating a part of the locking member and a part of the driving part therein, and including the plurality of guides; and

It is coupled to the upper side of the housing and may further include a cap having a through hole so that the locking part is movable up and down and rotatable.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the housing,

cylindrical body;

a plurality of first guides formed along an inner circumferential surface of the cylindrical body, guiding the push member and the cam to be movable up and down, and spaced apart at a predetermined angle; and

It may include a plurality of second guides formed along an inner circumferential surface of the cylindrical body, guiding the cam to rotate, and spaced apart at a predetermined angle.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the first guide and the second guide may be alternately formed along the inner circumferential surface of the housing.

In addition, in the multipurpose locking device according to an embodiment of the present invention, each of the plurality of first guides is formed spaced apart from each other at an angle of 90 degrees, and each of the plurality of second guides is spaced apart from each other at an angle of 90 degrees may have been formed.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the locking unit,

a coupling member engaged with the cam; and

It may include a locking member integrally formed with the coupling member, formed in a straight line shape, and vertically moved or rotated in conjunction with the vertical movement or rotation of the cam.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the cam,

a first cylindrical body;

a plurality of first protruding protrusions spaced apart from each other by a predetermined angle along an upper outer circumferential surface of the first cylindrical body; and

A second cylindrical body formed integrally with the first cylindrical body and formed on an upper portion of the first cylindrical body,

The second cylindrical body is coupled to the locking part,

The lower end of each of the plurality of first protrusions includes a first sliding surface formed to be inclined,

Each of the plurality of first protruding protrusions may be guided to move vertically by the corresponding first guide, and may be guided to rotate by the corresponding second guide.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the pushing member,

a third cylindrical body having an open upper side and a hollow in a middle portion capable of accommodating a lower portion of the first cylindrical body of the cam;

a plurality of second protrusions spaced apart from each other at a predetermined height along an outer circumferential surface of the third cylindrical body; and

A second sliding surface formed by alternating peaks and valleys continuously along the circumference of the upper end of the open portion of the third cylindrical body;

Each of the plurality of second protrusions may be guided to move vertically by the corresponding first guide.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the drive unit further includes an elastic member positioned between the cam and the cap,

The cam may rotate as the first sliding surface slides along the second sliding surface or the second guide by the elastic force of the elastic member.

In addition, in the multipurpose locking device according to an embodiment of the present invention, the driving unit may rotate the locking unit in only one direction.

According to the multipurpose locking device according to an embodiment of the present invention, it can be maintained in an unlocked state or a locked state even without a continuous supply of driving voltage, thereby dramatically reducing power consumption.

In addition, according to the multipurpose locking device according to an embodiment of the present invention, the manufacturing process is simple because it has a simple structure, and the object is locked or unlocked by simply turning on/off the switch for controlling the supply of driving voltage. Since it can be maintained, it is possible to easily switch the object to a locked or unlocked state.

In addition, according to the multi-purpose locking device according to an embodiment of the present invention, an object can be maintained in a locked or unlocked state according to the rotation state of the locking device, so that it is easy to attach or detach an object that needs to be locked or unlocked. can

1 is a perspective view of a multipurpose locking device according to an embodiment of the present invention;
Figure 2 is a perspective view of a multi-purpose locking device according to an embodiment of the present invention when the housing is in a transparent state.
Figure 3 is a cross-sectional view of a multi-purpose locking device according to an embodiment of the present invention cut from top to bottom.
4 is a perspective view of a housing of a multi-purpose locking device according to an embodiment of the present invention;
5 is a top view of the housing shown in FIG. 4;
6 is a perspective view of a cam of a multi-purpose locking device according to an embodiment of the present invention.
Figure 7 is a top view of the cam shown in Figure 6;
8 is a perspective view of a push member of a multi-purpose locking device according to an embodiment of the present invention.
Fig. 9 is a top view of the pushing member shown in Fig. 8;
10 is a perspective view of a locking unit of a multi-purpose locking device according to an embodiment of the present invention.
Fig. 11 is a view showing an engaging pin for engaging a cam with an engaging member of a locking part;
12 is a view for explaining that a coupling member of a locking part and a cam are coupled by a coupling pin;
13 is a view for explaining the operation of a multi-purpose locking device according to an embodiment of the present invention.
14 and 15 show exemplary applications of a multi-purpose locking device according to an embodiment of the present invention.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to explain his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical spirit of the present invention based on the principles.

In adding reference numerals to components of each drawing in this specification, it should be noted that the same components have the same numbers as much as possible, even if they are displayed on different drawings.

In addition, terms such as “first”, “second”, “one side”, and “other side” are used to distinguish one component from another component, and the components are limited by the terms. It is not.

Hereinafter, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a multi-purpose locking device 100 according to an embodiment of the present invention, and FIG. 2 is a transparent state of the housing 104 in order to describe the components present inside the housing 104. It is a perspective view of the multi-purpose locking device 100 in a state, and FIG. 3 is a cross-sectional view of the multi-purpose locking device 100 cut from top to bottom.

1 to 3, the multipurpose locking device 100 according to an embodiment of the present invention includes a locking unit 109 that is movable up and down and rotatable, and a driving voltage is applied for a predetermined time and then is not applied. In this case, the locking part 109 is maintained in a locked state by rotating the locking part 109 by a predetermined angle, that is, in a locked state, and the driving voltage is applied again for a predetermined time and then is not applied. ) by a predetermined angle to maintain the locking unit 109 in an unlocked state.

The drive unit 119 includes a push member 114 capable of moving up and down, a cam 116 that moves up and down or rotates in a predetermined direction according to the up and down movement of the push member 114, and a driving voltage B+ is applied. In this case, the push member 114 is raised by raising the shaft 110, and when the driving voltage (B+) is not applied, the shaft 110 is lowered to lower the push member 114. A plurality of guides 122 and 124 guiding movement of the descending portion 112 , the push member 114 , and the cam 116 may be included.

The push member lifting and lowering unit 112 may include an ascending or descending shaft 110 and a shaft driving unit 102 for ascending or descending the shaft 110 .

As shown in FIGS. 1 to 4 , the multi-purpose locking device 100 has open upper and lower sides, and includes a coupling member 108 that is a part of the locking member 109 and a shaft 110 that is a part of the driving unit 119. ), the push member 114, the cam 116, and the elastic member 118 are accommodated therein, and the plurality of guides 122 and 124 are coupled to the housing 104 and the upper side of the housing 104, , The coupling member 108 of the locking part 109 may further include a cap 106 having a through hole so as to be movable up and down and rotatable.

In FIG. 3, reference numeral 1100 denotes a coupling pin for coupling the coupling member 108 and the cam 116, and a perspective view of the coupling pin 1100 is shown in FIG. 11, and as shown in FIG. 12, the coupling pin 1100 is inserted into the groove 1200 formed on the inner surface of the coupling member 108 and the groove 606 of the cam 116 shown in FIG. 6, so that when the cam 116 rotates, the locking part 109 interlock to allow rotation. In FIG. 12 , reference numeral 126 denotes a bolt for coupling the locking member 107 and the cam 116 . Since the locking member 107 and the cam 116 are coupled by the bolt 126, when the cam 116 rotates, the locking part 109 can rotate in conjunction, and the cam 116 can rise or fall. In this case, the locking part 109 may be raised or lowered in conjunction with each other.

Referring to FIG. 4 , the housing 104 is formed along an inner circumferential surface of a cylindrical body 400 and guides the push member 114 and the cam 116 to move vertically. A plurality of first guides 122 spaced apart at a predetermined angle and a plurality of second guides 122 formed along the inner circumferential surface of the cylindrical body 400 and guiding the cam 116 to rotate and spaced apart at a predetermined angle A guide 124 may be included.

As shown in FIGS. 4 and 5 , the plurality of first guides 122 and the plurality of second guides 124 may be alternately formed along the inner circumferential surface of the housing 400 .

In one embodiment of the present invention, the plurality of first guides 122 may be formed spaced apart at an angle of 90 degrees, and the plurality of second guides 124 may be formed spaced apart at an angle of 90 degrees.

Referring to FIG. 10, the locking part 109 is integrally formed with a coupling member 108 coupled to the cam 116 and the coupling member 108 and is formed in a straight line shape, and the cam 116 It may include a locking member 107 that moves up and down or rotates in conjunction with the up and down movement or rotation of the.

6 and 7, the cam 116 includes a first cylindrical body 600 and a plurality of first protruding protrusions ( 602) and a second cylindrical body 604 formed integrally with the first cylindrical body 600 and formed on an upper portion of the first cylindrical body 600.

The second cylindrical body 604 is coupled to the coupling member 108 of the locking part 109, and the lower end of each of the plurality of first protrusions 602 includes a first sliding surface 608 formed to be inclined. And, each of the plurality of first protrusions 602 is guided to move up and down by the corresponding first guide 122 and can be guided to rotate by the corresponding second guide 124. .

Referring to FIGS. 8 and 9 , the push member 114 has an open upper side and a third hollow portion in the middle portion capable of accommodating a lower portion of the first cylindrical body 600 of the cam 116. Cylindrical body 800, a plurality of second protruding protrusions 802 formed at a predetermined height along the outer circumferential surface of the third cylindrical body 800, and the upper end of the open portion of the third cylindrical body 800 It includes second sliding surfaces 804a and 804b in which peaks 806 and valleys 808 are alternately formed along the circumference, and each of the plurality of second protrusions 802 corresponds to the first guide ( 122) may be guided to move up and down.

2, 6 and 8, the drive unit 119 further includes an elastic member 118 positioned between the cam 116 and the cap 106, and the cam 116 1 sliding surface 608 is slid along the second sliding surface 804b of the push member 114 or the second guide 124 of the housing 104 by the elastic force of the elastic member 118, so that the cam (116) can be rotated.

In one embodiment of the present invention, the peaks 806 and valleys 808 of the first protrusion 602, the first guide 122, the second guide 124, and the second sliding surfaces 804a and 804b, and A total of four second protrusions 802 are formed. Meanwhile, the number of second protrusions 802 may be smaller.

In addition, the driving unit 119 may rotate the locking unit 109 in one direction, for example, clockwise or counterclockwise by 90 degrees.

In one embodiment of the present invention, the driving unit 119 may rotate the locking unit 109 by 90 degrees in a counterclockwise direction. However, the present invention is not limited thereto, and the inclination direction of the first sliding surface 608 of the cam 116 is opposite to that of the first sliding surface 608 shown in FIG. 6, and the housing ( When the inclination direction of the second guide 124 of 104 is opposite to the inclination direction of the second guide 124 shown in FIG. 2, the driving unit 119 rotates the locking unit 109 clockwise. It can be rotated by 90 degrees.

The operation of the multi-purpose locking device according to an embodiment of the present invention configured as described above will be described below.

Referring to FIG. 2 , in the multipurpose locking device 100 according to an embodiment of the present invention, the switch SW for controlling the supply of the driving voltage is turned on for a short period of time, for example, about 1 second. When turned OFF after being on, that is, when the switch SW is pressed for about 1 second and then released, the locking part 109 rises and rotates while descending again. At this time, the locking part 109 finally rotates 90 degrees.

Accordingly, the locking member 107 of the straight locking part 109 is rotated 90 degrees from the state shown in FIG. 14 to the state shown in FIG. 15 to lock and fix the locking object 1400 such as a car battery. condition can be maintained. 14 and 15 are top views of the locking object 1400 and the locking member 107 of the multipurpose locking device 100 according to an embodiment of the present invention viewed from above.

Again, for a short time, for example, when the switch (SW) that regulates the supply of the driving voltage for about 1 second is turned on and off, that is, when the switch (SW) is pressed for about 1 second and then released In this case, the locking part 109 rises again and rotates while descending again. At this time, the locking part 109 is finally rotated 90 degrees again.

Accordingly, the locking member 107 of the straight locking part 109 is rotated 90 degrees again from the state shown in FIG. 15 to the state shown in FIG. 14 to release the locked object 1400 from the locked state. condition can be maintained.

In this way, the object 1400 can be locked or unlocked according to the rotational state of the locking member 107, so that, for example, the battery of an electric vehicle can be easily attached or detached.

In addition, the multipurpose locking device 100 according to an embodiment of the present invention does not need to be continuously supplied with a driving voltage, but is supplied with a driving voltage for a short period of time, for example, about 1 second, and locks or releases the lock. Since the state can be continuously maintained, the object 1400 can be maintained in a locked or unlocked state with minimal power.

Accordingly, since power required to maintain a locked state or an unlocked state can be minimized, power consumption can be drastically reduced, and thus, it can be applied as a battery fixing part for fixing a battery of an electric vehicle.

2, 4, 6, 8 and 13, the operation of the multi-purpose locking device 100 according to an embodiment of the present invention will be described in detail.

Referring to FIGS. 2 and 13 , it is assumed that in step S1300, the switch SW for controlling the supply of the driving voltage is turned on and then turned off for a short period of time, for example, about 1 second. .

In step S1300, when the switch (SW) is turned on (ON) for about 1 second and then off (OFF) for a short time, for example, about 1 second, that is, when the switch (SW) is pressed for about 1 second and then released, the switch ( While SW) is on, DC power (B+ in FIG. 2) is applied to the shaft driving unit 102 so that the shaft driving unit 102 gradually lifts the shaft 110, so that the push member lifting and lowering unit 112 The shaft 110 is gradually raised as in steps S1302, S1304 and S1306.

As the shaft 110 of the pushing member rising and falling part 112 rises, the push member 114 and the cam 116 also rise along the first guide 122 .

In step S1308, the cam 116 starts to rotate along the second sliding surface 804b of the push member 114 by the downward elastic force of the elastic member 118.

It is assumed that the switch SW is turned off in step S1310.

In step S1310, when the switch (SW) is turned off from the on state for a short time, DC power (B+ in FIG. 2) is not applied to the shaft driving unit 102, and steps S1310, S1312, step S1314 and steps As in S1316, the shaft 110 gradually descends, and the pushing member 114 also descends accordingly.

As the push member 114 descends, the first sliding surface 608 of the cam 116 is moved between the second sliding surface 804b of the push member 114 and the housing by the downward elastic force of the elastic member 118. By sliding along the second guide 124 of 104, the cam 116 rotates while gradually descending, and in step S1314, the cam 116 stops rotating by the first guide 122 and the first guide 122 While descending along ), the lower end of the second protrusion 802 of the pushing member 114 touches the lower end of the first guide 122 of the housing 104 in step S1316, and the pushing member 114 stops descending Accordingly, the cam 116 also stops descending.

Since the locking member 107 rotates in conjunction with the rotation of the cam 116, in step S1316, the locking member 107 is rotated 90 degrees from the state in step S1300.

14 and 15, the locking member 107 in the unlocked state in FIG. 14 is rotated 90 degrees and becomes locked and fixed as shown in FIG. 15.

Therefore, even while the switch SW is off, the locking member 107 maintains the locked state as in step S1316.

Again, it is assumed that in step S1316, the switch SW for intermittently supplying the driving voltage is turned on and then turned off for a short period of time, for example, approximately 1 second.

In step S1316, when the switch (SW) is turned on (ON) for about 1 second and then off (OFF) for a short time, for example, about 1 second, that is, when the switch (SW) is pressed for about 1 second and then released, the switch ( While SW) is on, DC power (B+ in FIG. 2) is applied to the shaft driving unit 102 so that the shaft driving unit 102 gradually lifts the shaft 110, so that the push member lifting and lowering unit 112 The shaft 110 is gradually raised as in steps S1318, S1320 and S1322.

As the shaft 110 of the pushing member rising and falling part 112 rises, the push member 114 and the cam 116 also rise along the first guide 122 .

In step S1322, the first sliding surface 608 of the cam 116 starts to rotate along the second sliding surface 804b of the pushing member 114 by the downward elastic force of the elastic member 118.

It is assumed that the switch SW is turned off in step S1324.

In step S1324, when the switch (SW) is turned off from the on state for a short time, DC power (B+ in FIG. 2) is not applied to the shaft driving unit 102, so steps S1324, S1326, step S1328, As in steps S1330 and S1332, the shaft 110 gradually descends, and thus the pushing member 114 also descends.

As the push member 114 descends, the first sliding surface 608 of the cam 116 is moved between the second sliding surface 804b of the push member 114 and the housing by the downward elastic force of the elastic member 118. By sliding along the second guide 124 of 104, the cam 116 gradually descends and rotates, and in step S1330, the cam 116 stops rotating by the first guide 122 and the first guide 122 While descending along ), the lower end of the second protrusion 802 of the pushing member 114 touches the lower end of the first guide 122 of the housing 104 in step S1332, and the pushing member 114 stops descending Accordingly, the cam 116 also stops descending.

Since the locking member 107 rotates in conjunction with the rotation of the cam 116, in step S1332, the locking member 107 is rotated 90 degrees from the state in step S13316.

14 and 15, the locking member 107 in the locking state in FIG. 15 is rotated 90 degrees to be in the unlocked state as shown in FIG. 14.

Therefore, even while the switch SW is off, like step S1332, the locking member 107 maintains the unlocked state.

As described above, according to the multipurpose locking device 100 according to an embodiment of the present invention, by simply turning on/off the switch (SW) for controlling the supply of driving voltage once for a short time, the locking device (100) can be controlled to be locked or unlocked, and power consumption can be drastically reduced because there is no need to continuously supply driving voltage to the locking device to maintain the locked or unlocked state. .

The multipurpose locking device 100 according to an embodiment of the present invention is a locker installed in schools, hospitals, health clubs, bathrooms, etc., items installed in subway stations and large marts, as well as locking objects such as batteries of internal combustion engine vehicles or electric vehicles. It can be applied to keep various locked objects including all types of doors having a function that can be opened and closed, such as storage boxes, courier storage boxes and doors, in a locked or unlocked state.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, the present invention is not limited thereto, and within the technical spirit of the present invention, those skilled in the art It will be clear that the modification or improvement is possible by

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

100: multi-purpose locking device 102: shaft driving unit
104: housing 106: cap
107: lock member 108: coupling member
109: locking part 110: shaft
112: push member rising and falling part
114: push member 116: cam
118: elastic member 119: driving unit
122: first guide 124: second guide
126: bolt 400: cylindrical body
600: first cylindrical body 602: first protrusion
604: second cylindrical body 606: groove
608: first sliding surface 800: third cylindrical body
802: second protrusion 804a, 804b: second sliding surface
806: peak of the second sliding surface 808: trough of the second sliding surface
1100: coupling pin 1200: groove
1400: lock object

Claims (11)

a locking unit movable up and down and rotatable; and
When the driving voltage is applied for a predetermined period of time but is not applied, the locking unit is rotated by a predetermined angle to maintain the locking unit in a locked state. A multi-purpose locking device comprising a drive unit that rotates to keep the locking unit in an unlocked state. The method of claim 1,
the driving unit,
a push member movable up and down;
a cam that moves up and down or rotates in a predetermined direction according to the up and down movement of the push member;
a push member lifting and lowering unit configured to raise a shaft to raise the push member when a driving voltage is applied and to lower the push member by lowering the shaft when a driving voltage is not applied; and
A multi-purpose locking device comprising a plurality of guides guiding movement of the push member and the cam. The method of claim 2,
a housing having open upper and lower sides, accommodating a part of the locking member and a part of the driving part therein, and including the plurality of guides; and
Coupled to the upper side of the housing, further comprising a cap having a through hole so that the locking portion can move up and down and rotate. The method of claim 3,
the housing,
cylindrical body;
a plurality of first guides formed along an inner circumferential surface of the cylindrical body, guiding the push member and the cam to be movable up and down, and spaced apart at a predetermined angle; and
A multi-purpose locking device comprising a plurality of second guides formed along an inner circumferential surface of the cylindrical body and guiding the cam to rotate and spaced apart at a predetermined angle. The method of claim 4,
The first guide and the second guide are alternately formed along the inner circumferential surface of the housing, the multi-purpose locking device. The method of claim 4,
Wherein each of the plurality of first guides and the plurality of second guides are formed spaced apart at an angle of 90 degrees, the multi-purpose locking device. The method of claim 2,
the locking part,
a coupling member engaged with the cam; and
A multi-purpose locking device comprising a lock member integrally formed with the coupling member and formed in a straight line shape and moving up and down or rotating in conjunction with the up and down movement or rotation of the cam. The method of claim 4,
The cam is
a first cylindrical body;
a plurality of first protruding protrusions spaced apart from each other by a predetermined angle along an upper outer circumferential surface of the first cylindrical body; and
A second cylindrical body formed integrally with the first cylindrical body and formed on an upper portion of the first cylindrical body,
The second cylindrical body is coupled to the locking part,
The lower end of each of the plurality of first protrusions includes a first sliding surface formed to be inclined,
Each of the plurality of first protrusions is guided to move up and down by the corresponding first guide and guided to rotate by the corresponding second guide. The method of claim 8,
The push member,
a third cylindrical body having an open upper side and a hollow in a middle portion capable of accommodating a lower portion of the first cylindrical body of the cam;
a plurality of second protrusions spaced apart from each other at a predetermined height along an outer circumferential surface of the third cylindrical body; and
A second sliding surface formed by alternating peaks and valleys continuously along the circumference of the upper end of the open portion of the third cylindrical body;
Wherein each of the plurality of second protruding protrusions is guided to move up and down by the corresponding first guide. The method of claim 9,
The driving unit further includes an elastic member positioned between the cam and the cap,
The multi-purpose locking device wherein the cam rotates as the first sliding surface slides along the second sliding surface or the second guide by the elastic force of the elastic member. The method of claim 1,
The driving unit rotates the locking unit in only one direction, a multi-purpose locking device.

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