KR101712087B1 - Door Locking Apparatus Possible Auto Locking - Google Patents

Abstract

The present invention relates to a door locking apparatus capable of automatically locking a door by operating the knob in an open position for opening the door and then returning the knob to the locked state.
The present invention includes a main body 10; A knob 20 provided in the main body 10 for performing opening and closing operations of the door; A key assembly 30 installed in one side of the knob 20 to enable locking and unlocking thereof; A shaft 40 coupled to one end of the knob 20 to rotate within one side of the body 10; And a locking bar (50) which is coupled to an end of the shaft (40) and rotated so as to open and close the door,
The key assembly 30 includes a key box 31; An eccentric projection (36) eccentrically protruding from one end (32) of the key box (31); An engaging member provided in the mounting portion 21 of the knob 20 so as to be movable upward and downward and exposed to the lower end of the mounting portion 21; And an elastic member (37) that is resiliently mounted on the upper end of the latching member,
And a latching groove (12a) formed in the receiving portion (12) of the main body (10) for latching the latching member,
A pair of guide protrusions 43 protrude from the outer circumferential surface of the insertion piece 40a protruding from the shaft 40 so as to be symmetrical to each other, And one guide protrusion 44 protrudes from the surface.

Description

(Door Locking Apparatus Possible Auto Locking)

The present invention relates to a door locking device capable of automatically locking, and more particularly, to automatically open a door when the knob is operated to an open position and then the door is returned to a locked state .

In general, the switchboard is provided with various components such as various switches and relays for operation and control of a power station or a substation. The switchboard includes a main body having a storage space and a door that is openably and closably provided in the main body The door is provided with a door locking device for locking and unlocking the door.

The conventional door locking device includes a door handle for locking and unlocking the door through a rotation operation, a rotary plate connected to the shaft of the door handle and rotated simultaneously, And a rod bar for opening and closing the door through upward and downward movement.

In addition, the rod bar supports are provided at the intermediate positions of the upper and lower rod bars.

In the conventional door locking device, when the door handle is rotated to lock the door, the rotary bar rotates simultaneously and the rod bar connected to both ends of the rotary bar moves up and down in the vertical direction, When the door is locked in the locked state and, conversely, the door is rotated in the direction opposite to the locking direction of the door handle in order to release the door, the load bar is moved in the vertical direction to release the door.

However, in the conventional door locking apparatus, when the rod bar is moved up and down, the end of the rod bar is positioned on the upper and lower inner side surfaces of the main body, but the rod bar is not in close contact with the rod bar.

In other words, at the time of operating the door handle for opening / closing the door, since the rod bar must move in the vertical direction, the rod bar and the upper and lower inner surfaces of the body portion must be spaced apart from each other by a predetermined distance.

Accordingly, although the locking state of the door must be reliably performed, a sound (rattling sound) is generated as the door is pulled out while being slightly separated from the main body, and at the same time, There is a problem that can not be done.

Another conventional door locking apparatus has a structure in which a locking bar is provided for locking the inner surface of a door and includes a body fixed to the door surface, And a knob for rotating the locking bar to open the door. The knob is connected to the locking bar by a connecting shaft.

When the knob is rotated by inserting the key into the key box provided on the inner surface of the knob at the time of rotation of the knob, the locking state of the knob is released from the body, and when the knob is rotated in one direction , The locking bar is simultaneously rotated to open the door, the knob rotated to reverse the door is rotated backward, and the key is inserted into the knob so that the knob is locked from the body via the key box In order to lock and unlock the door, it is necessary to lock or unlock the knob through the key.

Korean Patent No. 10-432810 (Notification Date: May 28, 2004)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to solve the above problems, and it is an object of the present invention to provide an automatic door locking device for an automatic door locking device, So that the door can be automatically locked.

According to an aspect of the present invention, A knob provided in the main body to perform opening and closing operations of the door; A key assembly installed inside one of the knobs to enable locking and unlocking; A shaft coupled to one end of the knob to rotate within one side of the body; And a locking bar that is coupled to an end of the shaft and rotates so as to open and close the door, wherein the key assembly includes a key box; An eccentric projection protruding eccentrically from one end of the key box; An engaging member provided in the mounting portion of the knob so as to be movable up and down and exposed to the lower end of the mounting portion; And an elastic member that is resiliently mounted on an upper end portion of the engaging member,

And an engaging groove formed in the receiving portion of the main body for engaging the engaging member,
A pair of guide protrusions protruding from the outer circumferential surface of the insertion member protruding from the shaft and symmetrical to each other and one guide protrusion protruding from the guide protrusion to the upper surface of the insertion portion.

Further, the end portion of the shaft further includes a rotation restricting member.

delete

In addition, the rotation restricting member is provided with a fastening hole for engaging the fastening member, and is provided with a pair of protruding portions protruding in the radial direction with an interval in the circumferential direction.

And an elastic member is further included on the outer circumferential surface of the shaft.

In addition, a guiding part formed in one side of the main body part is protruded in a radial direction to guide the guide protrusion formed on the outer circumferential surface of the shaft and to perform rotation and advance movement.

Further, the guide portion has a structure including an inner inclined surface and an outer inclined surface formed on both sides, and an inner linear surface and an outer linear surface formed between the inner inclined surface and the outer inclined surface.

In addition, a stopping protrusion is formed along the circumferential direction in front of the guide portion at the upper and lower predetermined positions of the inner surface of the insertion portion of the main body portion so as to contact the protrusion of the rotation restricting member and restrict the rotation angle of the rotation restricting member.

In addition, the latching member is formed with an insertion groove for inserting eccentric projections formed eccentrically on the end portion of the key box.

In addition, the insertion groove of the engaging member is formed in a larger area than the eccentric projections so as not to interfere with eccentric movement of the eccentric projections.

And an elastic member provided on the hinge shaft provided to be rotatably engaged with the shaft so as to protrude from the main body when the knob is unlocked.

The eccentric protrusion formed eccentrically on the end of the key box while being inserted into the insertion groove has an angle of 180 degrees to 270 degrees when the vertical direction is 0 degrees. Respectively.

In addition, a support groove is formed in the inner side surface of the mounting portion of the knob, a cutout groove is formed in the upper portion of the latch member, and an elastic member is elastically supported between the support groove and the cutout groove.

As described above, according to the present invention, when the knob is operated to the original position before the knob is inserted into the main body portion, There is an effect that the knob can be locked in the main body.

In addition, according to the present invention, when the knob is rotated to open the door, the locking bar is automatically advanced toward the door so that the locking bar is spaced from the inner side of the door so that the locking bar can be opened smoothly without interference.

In addition, according to the present invention, when the knob for opening the door is unlocked and then the knob is returned to the locked state, the locking to the main body is automatically performed without a key operation.

1 is an assembled perspective view of a door locking apparatus according to an embodiment of the present invention.
Figure 2a is an exploded perspective view of Figure 1;
FIG. 2B is a rear exploded perspective view of FIG. 2A. FIG.
Fig. 3 is a longitudinal sectional view of Fig. 1; Fig.
FIG. 4A is a view showing an arrangement relationship of an engaging member for engaging the main body of the door locking device according to an embodiment of the present invention and the eccentric projections of the key box. FIG.
FIG. 4B is a view showing a state in which the latching member is lifted from the rotation of the key box from FIG. 4A. FIG.
5A is an enlarged longitudinal sectional view of a key box, a knob, and a main body according to an embodiment of the present invention.
5B is a cross-sectional view showing a state in which the locking member is raised by the rotation of the key box to release the primary locking state from FIG. 5A.
6 is an inside perspective view of an accommodating portion of a main body according to an embodiment of the present invention.
7 is an enlarged perspective view of a shaft according to an embodiment of the present invention.
8A is a side view illustrating a state in which a knob is lifted in a main body according to an embodiment of the present invention.
Fig. 8B is a side sectional view of Fig. 8A. Fig.
8C is a side cross-sectional view of the state in which the knob is rotated to open the door in Fig. 8B.
FIG. 9A is a view showing the arrangement relationship between the protrusion of the shaft and the guide protrusion formed in the receiving portion of the main body according to the embodiment of the present invention. FIG.
FIG. 9B is a view showing a state in which the position of the protrusion is shifted after the rotation of the shaft in FIG. 9A.
FIG. 10 is a cross-sectional view taken along the line AA of FIG. 8B showing the arrangement relationship between the rotation limiting member and the receiving portion internal protrusion of the main body according to the embodiment of the present invention.
11 is an exploded perspective view showing another embodiment of the present invention.
12A is an assembled cross-sectional view of a door locking apparatus according to another embodiment of the present invention.
FIG. 12B is a cross-sectional view showing a state in which the knob is released from the locked state by popping up the knob from FIG. 12A.
FIG. 13A is a cross-sectional view illustrating an arrangement of an engaging member for engaging the main body of the door locking device according to another embodiment of the present invention and the eccentric projections of the key box. FIG.
Fig. 13B is a sectional view showing the state in which the engaging member is raised by rotation of the key box from Fig. 13A. Fig.
13C is an explanatory view showing the eccentric movement of the eccentric projection of the key box according to another embodiment of the present invention.
FIG. 14A is a sectional view showing a lower end portion of a door locking apparatus according to another embodiment of the present invention. FIG.
FIG. 14B is an engaging sectional view showing a state in which the key is rotated to release the locked state of the knob in FIG. 14A. FIG.
15 is a cross-sectional view of Fig. 14A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of a door locking apparatus according to an embodiment of the present invention. FIG. 2 (a) is an exploded perspective view of a door locking apparatus according to an embodiment of the present invention, and FIG.

1 and 2A, a door locking apparatus 1 according to an embodiment of the present invention includes a main body 10 fixed to a door surface, A key assembly 30 disposed inside the main body 10 while being inside one of the knobs 20 and a key assembly 30 disposed at one end of the knob 20, And a locking bar 50 which is coupled to an end of the shaft 40 and rotates so as to open and close the door, do.

A receiving groove 11 capable of receiving the knob 20 is formed in the main body 10 and a receiving portion 12 is formed on one side of the main body 10, An insertion portion 13 having a protruding shape is formed on the other side of the portion 10 (a position spaced from the accommodating portion 12) so that the shaft 40 is inserted therein.

A knob 20 rotatably provided on the main body 10 has a mounting portion 21 protruding from a side surface of the knob 20 to receive the key assembly 30. [

The key assembly 30 includes a key box 31 rotatably formed as a cylindrical body and an eccentric protrusion eccentrically protruded at one side end 32 of the key box 31 36 are provided.

The shaft 40 is formed with a hinge portion 41 having a protruding structure so as to be rotatably hinged to the end of the knob 20 and an insertion piece 40a having a structure protruding from the shaft 40 A pair of guide protrusions 43 are protruded and formed at positions symmetrical to each other on the outer circumferential surfaces of the flange portion 42. The guide protrusions 43 are spaced apart from the guide protrusions 43 at intervals, And one guide protrusion 44 protrudes upward from the upper surface of the guide protrusion 40a.

In the embodiment of the present invention, the guide protrusions 44 may form at least one.

In addition, a coupling groove 45 may be formed at an end of the shaft 40 to engage the coupling member 60.

A wave washer 46a is inserted into the outer circumferential surface of the hinge portion 41 so as to have an elastic force with the washer 46. A sealing o-ring 47 is provided on the opposite side of the flange portion 42, The rotation restricting member 48 may be provided at the end portion of the rotation restricting member 40.

The rotation restricting member 48 has a locking hole 48a for engaging a locking member 60 such as a bolt or a screw together with a locking bar 50 and a washer 47a for locking or opening the door, And a pair of protrusions 48b and 48c protruding in the radial direction are provided at intervals in the circumferential direction.

In the embodiment of the present invention, the fastening hole 48a of the rotation limiting member 48 may be formed in a rectangular shape. However, the present invention is not limited to this form, but may be formed in various forms.

The pair of projections 48b and 48c are formed at intervals in the circumferential direction of the rotation restricting member 48 and have a structure protruding in the radial direction.

3, a guide protrusion 44 provided on the outer circumferential surface of the shaft 40 and protruding from the outer circumferential surface of the shaft 40 and a guide protrusion 44 formed in the insertion portion 13 of the main body 10 And has an elastic member 49 which is supported at one end thereof on the support step 13a and whose other end is elastically supported by the rotation restricting member 48. [

The guide protrusions 43 and 44 formed on the outer circumferential surface of the shaft 40 are guided in the inserting portion 13 formed at one side of the main body 10 so that the rotation and the forward movement are performed And the guide portion 13b is protruded in the radial direction.

The guide portion 13b has a structure in which the guide portion 13b is curvedly protruded along the inner circumferential surface of the insertion portion 13, but is not formed in a closed curve shape. As shown in Figs. 6 and 9A, In the form of a curve.

These openings are formed in order to assemble the shaft 40 in the insertion portion 13 and allow the guide protrusion 44 to pass through and be assembled.

The guide portion 13b has an inner inclined surface 13b-1 and an outer inclined surface 13b-2 formed on both sides (upper and lower positions in FIG. 9A), an inner inclined surface 13b-1 and an outer inclined surface 13b -2), and an outer straight surface 13b-4.

A pair of guide protrusions 43 formed on the outer peripheral surface of the insertion piece 40a of the shaft 40 are positioned on the inner side of the guide portion 13b and one guide protrusion 44 are positioned on the outer surface of the guide portion 13b.

9A and 9B, when the shaft 40 rotates, the pair of guide projections 43 are guided toward the inner inclined surface 13b-1 of the inner side surface of the guide portion 13b, And one guide protrusion 44 is located on the outer inclined surface 13b-3 of the guide portion 13b and is guided while being guided to form the outer straight surface 13b- 4).

At this time, when the guide projection 43 is rotated from the inner inclined surface 13b-1 to the inner straight surface 13b-3, the shaft 40 is advanced in the axial direction so that the shaft 40 advances by the distance d, .

Here, the shaft 40 passes through the inside of the elastic member 49 and moves forward in the axial direction in a state where the elastic member 49 resiliently attached to the outer circumferential surface of the shaft 40 remains. At this time, The forward movement is facilitated by the repulsive force of the pushing member 49.

In other words, one end of the elastic member 49 is supported by the blocking jaw 13c formed inside the insertion portion 13 and has a repulsive force to extend in the outward direction of the insertion portion 13, The shaft 40 can be moved forward more easily by the repulsive force when it is moved forward (outwardly of the insertion portion 13).

Of course, when the shaft 40 is to be returned, the rotation restricting member 48 of the shaft 40, which has been moved forward, rotates the elastic member 49 to compress the knob 20, While being rotated and retracted to return to the home position.

6 and 10, at an upper portion and a lower predetermined position of the inner surface of the insertion portion 13 of the main body portion 10, a blocking jaw 13c (see FIG. 6) is formed along the circumferential direction forward of the guide portion 13b. Is formed to contact the projecting portions 48b and 48c of the rotation limiting member 48 so that the rotation angle of the rotation limiting member 48 is limited.

10 is a sectional view taken along the line A-A in FIG. 8B, but shows only a necessary portion for convenience of explanation.

In other words, the rotation restricting member 48, which rotates at the same time when the shaft 40 is rotated, rotates while the protruded pair of protruding portions 48b and 48c rotate and meet with the stopping jaw 13c in the insertion portion 13, By stopping the movement, the rotation angle of the shaft 40 is limited, so that the rotation angle during the opening and closing operation of the knob 20 is limited within a certain angle range.

The key assembly 30 has a structure in which an elastic member 37 and an engaging member 38 are provided on the outer surface side of the key box 31. [

The elastic member 37 is longitudinally mounted on the upper portion of the engaging member 38 and may be of a coil spring type.

The key box 31 is formed with an insertion groove 38a through which the eccentric protrusion 36 protruding eccentrically from the end 32 of the key box 31 is inserted. The engaging member 38 is moved upward and downward in accordance with the eccentric movement of the eccentric protrusion 36 according to the rotation of the elastic member 37. The engaging member 38 is moved upward while compressing the elastic member 37 (12a) in the receiving portion (12) of the main body (10).

The insertion groove 38a of the latching member 38 is formed on the front surface of the latching member 38. An eccentric projection 36 eccentrically protruding from the front surface of the key box 31 is inserted, The key box 31 that rotates (rotates 180 degrees) by the backward movement moves to the side of the insertion groove 38a and moves upward so that the locking member 38 is raised, 38a are preferably formed in a larger area than the eccentric projections 36 so as not to interfere with the eccentric movement of the eccentric projections 36. [

The lower end of the engaging member 38 may be formed with an inclined surface so that the engaging member 38 is smoothly inserted into the engaging groove 12a in the receiving portion 12 of the main body 10. [

In other words, the lower surface of the lower end of the engaging member 38, that is, the lower end of the engaging member 38 in the direction in which the engaging member 38 first enters into the accommodating portion 12 is formed and pushed by the engaging groove 12a to naturally insert and engage .

5A, the elastic member 37 is provided so as to be elastically biased in the vertical direction without rocking in the mounting portion 21 of the knob 20, and the engaging member 38 is also moved in the upward and downward directions Supporting pieces may be provided on both side surfaces of the latching member 38 so as not to rock left and right.

As shown in FIG. 5A, the door locking device 1 according to an embodiment of the present invention is coupled to a door to open and close the door. For example, in the case of a pair of door casings, The door is provided on the door side where the door locking device 1 is opened so that the locking bar 50 is rotated and positioned on the inner side of the fixed door so that the other door is opened In case of a door of a sliding door structure, the locking bar 50 may be hooked to the frame side of the cabinet (or the cabinet of the switchboard).

5 (b), when the knob 20 is unlocked from the main body 10 by inserting the knob 20 into the key box 31 through the key 3 and rotating the knob 20 in one direction The eccentric projection 36 formed at the front end of the key box 31 is rotated and eccentrically moved while the key box 31 is rotated.

The eccentric projection 36 is located on the upper surface of the insertion groove 38a of the engaging member 38 provided in the receiving portion 12 of the main body 10 and is rotated by the rotation of the key box 31, So that the latching member 38 is pushed up in the upward direction. The elastic member 37 located on the upper side of the latching member 38 is compressed and the latching member 38 is lifted so that the latching groove 38 is caught by the latching groove 12a formed in the accommodating portion 12 of the main body 10 The member 38 is released and the engagement state is released.

8A and 8B, when the knob 20 is lifted forward from the main body 10 and rotated in one direction (the opening direction of the door), the upper end of the knob 20 is hinged The combined shaft 40 is rotated simultaneously.

7, guide protrusions 43 and 44 are protruded from the outer circumferential surface of the shaft 40 so as to be spaced apart from the outer circumferential surface of the guide portion 43 (44) formed in the insertion portion 13 of the main body portion 10 13b so as to be in contact with the inner side and the outer side.

Therefore, when the knob 20 is rotated to open the door, the shaft 40 hinged to the upper portion of the knob 20 also simultaneously rotates, as shown in Figs. 8C, 9A, and 9B, The guide protrusions 43 and 44 protruding from the outer circumferential surface of the main body portion 40 are simultaneously rotated so that the inner inclined surface 13b-1 of the guide portion 13b formed in the insertion portion 13 of the main body portion 10 and the inner inclined surface 13b- 13b-2, and is rotationally moved to the inner straight surface 13b-3 and the outer straight surface 13b-4.

The shaft 40 is moved by the distance d so that the shaft 40 advances in the insertion portion 13 of the main body 10. At this time, one end of the elastic member 49 is supported by the inner support And the other end is supported on the inner surface of the rotation restricting member 48 so that the shaft 40 is advanced through the inside of the elastic member 49 when the shaft 40 is advanced, The elastic member 49 is stretched by the repulsive force by the distance that the rotation limiting member 48 moves forward.

Of course, the elastic member 49 always has a repulsive force. However, at a position before opening the knob 20, the guide protrusions 43 and 44 of the shaft 40 are inserted into the guide portion 13b of the insertion portion 13 2 is supported by the upper portion of the inner inclined surface 13b-1 and the outer inclined surface 13b-2 so as to maintain its position without being moved forward. By the rotation of the knob 20, (43) and (44) are guided along the guide portion (13b) in the insertion portion (13).

Therefore, when the shaft 40 is moved forward, the knob 20 is assisted by the repulsive force of the elastic member 49, so that the knob 20 can be more easily opened.

Thus, as the shaft 40 rotates by the rotation of the knob 20, the locking bar 50 coupled to the end of the shaft 40 is simultaneously rotated so that the door can be opened.

According to the embodiment of the present invention, when the shaft 40 rotates, the rotation restricting member 48 also rotates simultaneously. At this time, the rotation restricting member 48 is provided with the projection 48b along the circumferential direction at intervals, The rotation of the knob 20 is restricted as the rotation limiting member 48 is rotated so as to meet with the stopping jaw 13c formed in the insertion portion 13 of the main body 10, The rotation angle is limited.

That is, by limiting the rotation angle of the knob 20, the knob 20 can rotate only at a predetermined angle during the rotation operation of the knob 20 for opening or closing, thereby providing a more reliable opening or closing angle.

When the door is to be locked, the knob 20 is returned to its original position in the body 10 in the opposite direction to the opening. When the knob 20 is rotated to return the door 20 to its original position, Guide projections 43 and 44 formed on the outer circumferential surface of the insertion portion 40 are engaged with the inner inclined surface 13b-1 at the inner straight surface 13b-3 and the outer straight surface 13b-4 formed inside the insertion portion 13, The elastic member 49 provided on the outer circumferential surface of the shaft 40 by the rotation restricting member 48 is rotated by the rotation restricting member 48. At this time, And then backward.

When the knob 20 is rotated by an operation of rotating the knob 20 and then inserted into the receiving groove 11 of the main body 10, the upper end of the knob 20 is hinged to the shaft 40, The key 3 is reversely rotated to the original position so that the lower end of the engaging member 38 is exposed from the lower end of the knob 20. [

When the lower end of the knob 20 is pushed into the main body 10 in a state in which the lower end of the locking member 38 is exposed to the lower end of the knob 20, The engaging member 37 is inserted into the engaging groove 12a by the repulsive force of the compressed elastic member 37 to be engaged with the engaging groove 12a.

The knob 20 is installed at a lower side of the knob 20 and is inserted into the receiving portion 12 of the main body 10, The engaging member 38 is pushed into the engaging groove 12a formed in the receiving portion 12 of the body portion 10 and is locked so as to be engaged.

In other words, even if the knob 20 is not locked by the key 3, when the knob 20 is returned to its original position and inserted into the receiving groove 11 of the main body 10, the latch is automatically engaged by the latching member 38 to be locked.

11 shows another embodiment of the present invention in which an elastic member 15 is provided on an outer surface of a hinge shaft 14 in which a knob 20 is rotatably provided inside an upper end of a knob 20, .

Fig. 12A is an engagement sectional view reflecting the structure shown in Fig. 11, showing a structure in which the elastic member 15 is resiliently deformed.

The elastic member 15 may be a torsion spring. As the elastic member 15 is provided, the knob 20 is locked by an engaging member 39 provided in the body 10 to perform the same function as the engaging member 38, 3), it should jump to the user side.

12A, the elastic member 37 is resiliently mounted on the upper surface of the engaging member 39. The elastic member 37 is supported between the inner surface of the attaching portion 21 of the knob 20 and the engaging member 39 without rocking .

15, a support groove 21a is formed in the inner surface of the mounting portion 21 of the knob 20 in the vertical direction in the figure, and an incision groove 39b (not shown) is formed in the upper end of the engaging member 39. [ So that the elastic member 37 is inserted and supported therebetween.

The cutout groove 39b is formed at the upper end of the latching member 39. The cutout groove 39b is formed only at a predetermined depth by being clogged toward the front side and is cut open to the back side so that a part of the inserted elastic member 37 is exposed So that it can be supported by the support groove 21a.

By doing so, it is possible to provide the elastic member 37 having a larger repulsive force, thereby enabling the retaining force of the latching member 39 to be maintained to be large and the knob 20 to be securely locked in the body portion 10 Lt; / RTI >

When the knob 20 is unlocked and protrudes from the main body 10 as described above, the knob 20 can be rotated in one direction to perform the opening operation of the door.

Further, the latching member 39 is formed with an insertion groove 39a in a state of being offset to one side. When the knob 20 is in the locked state, the eccentric projection 36 of the key box 31 inserted into the insertion groove 39a is moved in the eccentric direction as shown in FIG. The elastic member 37 is compressed in the upper part of the latching member 39. At this time,

In other words, when the vertical direction is 0 degree, the range is from 0 ° to 90 °, the range from 90 ° to 180 °, the range from 180 ° to 270 °, and the range from 270 ° to 360 ° The eccentric protrusion 36 is positioned within a range of 180 ° to 270 ° which is the third ③ region and is eccentrically moved from the third region to the fourth region during the unlocking operation of the knob 20.

Here, the key 3 is in the vertical direction to release the knob 20 from the locked state from the main body 10, and is rotated 90 degrees to the right to be in a horizontal state.

When the key 3 is rotated to the right, when the latching member 39 is moved upward from the latching groove 12a formed at the lower portion of the lower inner receiving portion 12 of the main body 10, The repulsive force of the elastic member 15 causes the knob 20 to protrude toward the user, as shown in FIG. 12B.

In this state, when the key 3 rotated to the right is released, the engaging member 39 is lowered by the repulsive force of the compressed elastic member 37. At this time, the eccentric projection 36 of the key box 31, The key 3 is automatically positioned in the vertical direction as it moves from the region 4 to the region 3 again.

In other words, when the key 3 is rotated 90 degrees in order to release the knob 20, the engaging member 39 is rotated in the receiving portion 12 of the main body 10 by the repulsive force of the elastic member 37, The eccentric projection 36 of the key box 31 is pushed and eccentrically moved to the original position.

The knob 20 is caused to protrude from the main body 10 and then rotated to the right to open the door.

On the other hand, when the knob 20 is rotated in the opposite direction and is pushed into the main body 10, the knob 20 is projected to the lower end of the knob 20 in order to lock the knob 20 to the main body 10 The engaging member 39 moves into the accommodating portion 12 of the main body 10 while compressing the elastic member 37 so that the engaging member 39 is positioned in the engaging groove 12a, (12a) and automatically engaged.

Of course, the knob 20 is inserted into the main body 10 while compressing the elastic member 15 provided at the upper portion of the knob 20.

As described above, the present invention is a door locking apparatus used for opening and closing doors of various cabinets, an electric distribution panel, etc., in which the knob for opening the door is rotated and advanced during the rotation operation so that the locking bar 50 is slightly spaced from the inner surface of the door So that the operation can be smoothly performed without being interfered with the opening or closing operation due to close contact with the inner surface of the door.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, But fall within the scope of the appended claims.

d: interval
1: Door locking device
3: key
10:
11: Storage groove
12:
12a:
13:
13a: Support jaw
13b:
13b-1: inner inclined surface
13b-2: outer slope surface
13b-3: Inner rectilinear surface
13b-4: outer linear surface
13c: Jersey jaw
14: Hinge shaft
15: Elastic member
20: Knob
21: Installation section
21a: Support groove
30: key assembly
31: Key box
32: end
36: Eccentric projection
37: elastic member
38:
38a: insertion groove
39:
39a: Insert groove
39b: incision groove
40: Shaft
40a:
41: Hinge section
42: flange portion
43, 44:
45: Coupling groove
46: Washer
46a: Wave Washer
47: Oiling for sealing
47a: Washer
48:
48a: fastener
48b, 48c:
49: elastic member
50: Locking Bar
60: fastening member

Claims (13)

A main body 10;
A knob 20 provided in the main body 10 for performing opening and closing operations of the door;
A key assembly 30 installed in one side of the knob 20 to enable locking and unlocking thereof;
A shaft 40 coupled to one end of the knob 20 to rotate within one side of the body 10;
And a locking bar (50) which is coupled to an end of the shaft (40) and rotated so as to open and close the door,
The key assembly 30 includes a key box 31;
An eccentric projection (36) eccentrically protruding from one end (32) of the key box (31);
An engaging member provided in the mounting portion 21 of the knob 20 so as to be movable upward and downward and exposed to the lower end of the mounting portion 21;
An elastic member (37) resiliently mounted on an upper end of the latching member;
/ RTI >
And a latching groove (12a) formed in the receiving portion (12) of the main body (10) for latching the latching member,
A pair of guide protrusions 43 protrude from the outer circumferential surface of the insertion piece 40a protruding from the shaft 40 so as to be symmetrical to each other, Wherein one guide protrusion (44) is formed to protrude from the side surface of the door.
delete The method according to claim 1,
Characterized in that an end portion of the shaft (40) further includes a rotation restricting member (48).
The method of claim 3,
The rotation restricting member 48 is provided with a fastening hole 48a for engaging the fastening member 60 and a pair of projections 48b and 48c projecting radially in the circumferential direction Wherein the door locking device is a door lock device.
The method according to claim 1,
And an elastic member (49) is further provided on an outer circumferential surface of the shaft (40). The method of claim 3,
Guide portions 43 and 44 formed on the outer circumferential surface of the shaft 40 are guided in the inserting portion 13 formed at one side of the main body portion 10 so as to perform rotation and advance movement 13b are protruded in the radial direction.
The method of claim 6,
The guide portion 13b has an inner inclined surface 13b-1 and an outer inclined surface 13b-2 formed on both side surfaces thereof, and a guide portion 13b formed between the inner inclined surface 13b-1 and the outer inclined surface 13b-2 And an inner linear surface (13b-3) and an outer linear surface (13b-4).
The method of claim 6,
The upper and lower predetermined positions of the inner surface of the insertion section 13 of the main body section 10 are provided at predetermined positions so that the rotational angle of the rotation limiting member 48 is restricted by contacting the projections 48b and 48c of the rotation limiting member 48, Wherein a stopping protrusion (13c) is formed along the circumferential direction in front of the guide portion (13b). The method according to claim 1,
Wherein the engaging member is formed with an insertion groove (38a) for inserting an eccentric projection (36) formed eccentrically in an end portion (32) of the key box (31).
The method of claim 9,
Characterized in that the insertion groove (38a) of the latching member is formed in a larger area than the cross sectional area of the eccentric projection (36) so as not to interfere with eccentric movement of the eccentric projection (36).
The method according to claim 1,
The knob 20 is provided at an upper portion of the knob 20 with a hinge shaft 14 rotatably engaged with the shaft 40 so that the elastic member 15 Wherein the door lock mechanism comprises:
The method according to claim 1,
An eccentric projection 36 formed eccentrically on an end portion 32 of the key box 31 while being inserted into the insertion groove 39a is formed in the engaging member with an insertion groove 39a, And when the vertical direction is set to 0 degree, the door is positioned between 180 degrees and 270 degrees.
The method of claim 12,
A support groove 21a is formed on the inner side surface of the mounting portion 21 of the knob 20 and an incision groove 39b is formed on the upper portion of the engaging member. The support groove 21a and the incision groove 39b) is elastically resiliently resiliently biased between the first and second locking portions (39a, 39b).

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