JP5408786B2 - Door lock device - Google Patents

Description

  The present invention relates to a door locking device used for locking a door of an electrical / electronic equipment storage cabinet or the like.

  As a door locking device such as a cabinet for storing electrical and electronic equipment, the one disclosed in Patent Document 1 filed by the present applicant is known. This door lock device uses a link mechanism in which a handle and a lock hook are connected by a link. Both the handle and the locking hook are pivotally attached to the main body using a pin as a pivot shaft, but conventionally, a connection structure in which a driving type pin is press-fitted into the main body has been adopted.

  However, a large load acts on the pivot shaft of these handles and locking hooks when opening and closing, so if you repeat opening and closing, the driving type pin will gradually loosen, and in the worst case it may come off there were. Although it is conceivable to provide attachments for retaining the pins on both sides of the pins, there is a problem in that the number of assembling steps becomes complicated due to the large number of pins.

JP 2001-234658 A

  Therefore, the object of the present invention is to solve the above-mentioned conventional problems, and there is no fear that the pin as the pivot shaft of the handle or the locking hook will come off even if opening and closing is repeated, and the door chain is easy to assemble and excellent in aesthetics. It is to provide a locking device.

The present invention, which has been made to solve the above problems, includes a main body fixed to a door, a handle whose head is pivotally attached to the main body, and the handle and a link connected to each other, and an unlocking position and a lock A door locking device having a hook that swings between positions, the main body is constituted by a housing and a cover that covers the outside thereof, and the pivot shaft of the handle and the pivot shaft of the hook are supported by the housing It is attached to the cover and both ends of these pivot shafts are regulated by the inner surface of the cover which is a constituent member of the main body. Further, as in claim 2 , it is preferable that the head portion of the handle is hidden in a window hole provided in the cover and is pivotally attached to the housing on the back side of the cover.

  The door lock device according to the present invention repeatedly opens and closes by restricting the positions of the pivot shaft of the handle and the pivot shaft of the hook on the inner surface of the cover, which is a component of the main body, which is subjected to a large load during opening and closing. However, there is no worry that the pin, which is the pivot shaft, loosens and falls off the main body. In addition, the assembling work is easy, and the outside of the main body is covered with a cover, so that there is an advantage of excellent aesthetics. Further, since the cover can be sandwiched and coupled by the handle and the housing, sufficient strength can be provided.

It is an external appearance perspective view which shows embodiment of this invention. It is an external appearance perspective view of the state which lifted the handle. It is a disassembled perspective view. It is explanatory drawing of an assembly process. It is sectional drawing of the state which lifted the handle. It is sectional drawing of the state which closed the handle | steering-wheel. It is explanatory drawing of a link mechanism.

Preferred embodiments of the present invention are shown below.
FIG. 1 to FIG. 3 are perspective views showing an embodiment of the present invention, wherein 1 is an elongated hollow body fixed to a door of an electric / electronic equipment storage cabinet or the like, and 2 is pivotally attached to the body 1 so that it can be raised and lowered. Handles 3, 4 and 4 are first and second hooks that swing between the unlocked position and the locked position in conjunction with the opening / closing operation of the handle 2.

  The handle 2 has a head 5 pivotally attached to the main body 1 by a first pivot shaft 6 at the lower center of the handle 2, and a handle portion extends to the upper surface of the main body 1. The base of the first hook 3 is pivotally attached to the main body 1 by the second pivot shaft 7, and the base of the second hook 4 is pivoted to the main body 1 by the third pivot shaft 8. Each of these pivot shafts is a metal pin. The first hook 3 is located at the front part of the handle 2, and the second hook 4 is located at the rear part of the handle 2.

  As clearly shown in FIG. 3, the main body 1 is composed of an outer cover 9 and a housing 10 fixed inside the hollow. The housing 10 is a resin member in which the left and right side frame parts 11, the front connecting part 12, and the rear connecting part 13 are integrally molded, but may be made of metal. The side frame portion 11 is formed with shaft holes 14, 15, 16, and the first pivot shaft 6 of the handle 2 is inserted into the shaft hole 15, and the second pivot shaft 7 of the first hook 3. Is inserted into the shaft hole 14, and the third pivot shaft 8 of the second hook 4 is inserted into the shaft hole 16.

  In this manner, the first pivot shaft 6 of the handle 2, the second pivot shaft 7 of the first hook 3, and the third pivot shaft 8 of the second hook 4 are inserted into the housing 10, If this housing 10 is fitted into the inside of the main body 1 from below and fixed with screws or the like, the positions of both ends of these pivot shafts 6, 7, 8 are restricted by the inner surface of the cover 9 which is a constituent member of the main body, It does not fall off in the axial direction.

  In this way, if the positions of the pivot shafts 6 and 8 of the handle 2 and the pivot shafts 7 and 8 of the hooks 3 and 4, which are subjected to a large load during opening and closing, are restricted by the cover 9, the pivots can be pivoted even when repeated opening and closing. There is no worry that the pin that is the shaft loosens and falls off the main body. Further, since it is not necessary to press-fit a pin or to prevent it from coming off, the assembling work is facilitated, and the outer side of the main body 1 is covered by the cover 9, so that there is an advantage of excellent aesthetics.

  In order to function as a door lock device, a link mechanism for interlocking the handle 2 with these hooks 3 and 4 is required, and will be described below with reference to FIGS. However, since each pivot shaft described below is not fixed to the main body 1, it is attached to the handle 1 or the hooks 3 and 4 by a normal driving type pin.

  As shown in FIG. 5 to FIG. 7, on both sides of the head 5 of the handle 2 with the first pivot shaft 6 interposed therebetween, a fourth pivot shaft 21 and a fifth pivot shaft 22 are provided. The bases of the first link 23 and the second link 24 are pivotally attached. The leading end of the first link 23 is pivotally attached to the center portion of the first hook 3 by a sixth pivoting shaft 25. On the other hand, the tip end of the second link 24 is pivotally attached to the central portion of the second hook 4 by a seventh pivot shaft 26.

  To summarize the above structure, the first pivot shaft 6, the second pivot shaft 7, and the third pivot shaft 8 are fixed points with respect to the main body 1, and the fourth pivot shaft 21 and the fifth pivot shaft 5 are fixed. The pivot shaft 22 is a movable point that circularly moves around the first pivot shaft 6 along with the opening and closing operation of the handle 2, and the sixth pivot shaft 25 and the seventh pivot shaft 26 are each a second point. This is a movable point that circularly moves around the pivot shaft 7 and the third pivot shaft 8. The front portion of the first pivot shaft 6 has a mechanism that has the first pivot shaft 6, the second pivot shaft 7, the sixth pivot shaft 25, and the fourth pivot shaft 21 as nodes. The rear part of the first pivot shaft 6 includes a first pivot shaft 6, a third pivot shaft 8, a seventh pivot shaft 26, and a fifth pivot link. The four-bar link having the nodal pivot 22 as a nodal point is constructed.

  When the handle 2 is raised as shown in the lower part of FIG. 7 and FIG. 5, the first hook 3 is pulled by the first link 23 and rotates to the inner unlocking position. The second hook 4 is also pulled by the second link 24 and rotates to the inner unlocked position. Conversely, as shown in the upper part of FIG. 7 and FIG. 6, when the handle 2 is tilted until it comes into close contact with the main body 1, the first hook 3 is pushed by the first link 23 and rotates to the outer locking position. Pushed by the two links 24, the second hook 4 also rotates to the outer locking position.

  In the present invention, in the locked state in which the handle 2 is tilted, the fourth pivot shaft 21 is placed on the surface side of the main body 1 rather than the straight line passing through the first pivot shaft 6 and the sixth pivot shaft 25. The fifth pivot shaft 22 is located on a certain upper side (on the lock rotation direction side of the handle with respect to the pivot shaft of the handle) and is a straight line passing through the first pivot shaft 6 and the seventh pivot shaft 26. Is located on the lower side (the opposite side of the handle rotation direction of the handle with respect to the rotation axis of the handle) which is the back side of the main body 1. These two straight lines are neutral lines in terms of mechanics. As described above, if the fourth shaft 21 and the fifth shaft 22 are configured to exceed these neutral lines before reaching the locked state, The reaction force that tries to push back the hook 3 or the second hook 4 inward gives a rotational moment in the direction of tilting the handle 2 (clockwise in the drawing). 2 will not open naturally.

  In the unlocked state shown in the lower part of FIG. 7, the sixth pivot shaft 25 exceeds the straight line (neutral line) passing through the second pivot shaft 7 and the fourth pivot shaft 21, and the main body 1 side. When entering, the handle 2 cannot be returned unless the first hook 3 is moved. Therefore, a downward projection 40 is formed in the central portion of the housing 10 which is a constituent member of the main body 1, and the end of the first link 23 is brought into contact with the projection 40, so that the sixth pivot shaft 25 exceeds the neutral line. There are no restrictions. As described above, since the regulation is performed by the back surface portion that is a non-exposed portion that is not exposed on the surface of the handle 2 and the projection 40 that is a non-exposed portion that is not exposed on the surface of the main body 1, Scratches and the like produced on the handle surface do not appear on the handle surface and are excellent in aesthetics. Such a regulation can be performed between the handle 2 and the main body 1, for example.

  In order to assemble the door lock device having the above-described structure, first, the first hook 3, the second hook 4, the first link 23, and the second link 24 are pivotally attached to each pivot shaft. . Next, as shown in FIG. 4, the head 5 of the handle 2 is inserted through the hole 41 of the cover 9 of the main body 1 to the back side, and is pivotally attached to the housing 10 by the first pivot shaft 6. The first link 23 and the second link 24 are pivotally attached to the head 5 of the handle 2, and the first hook 3 and the second hook 4 are pivotally attached to the housing 10. Thereafter, when the housing 10 is housed in the cover 9, the handle 2 is in an unlocked position with respect to the main body 1. Finally, the housing 10 may be screwed from the rear side of the cover 9.

  As described above, the door locking device according to the present invention is configured so that the pivot shaft 6 of the handle 2 and the pivot shafts 7 and 8 of the hooks 3 and 4 on which a large load acts when opening and closing are configured on the main body 1. Since the position is regulated by the inner surface of the cover 9 which is a member, there is no fear that the pins which become the pivot shafts 6, 7 and 8 of the handle 2 and the hooks 3 and 4 will come off, and the assembly of the pin which becomes the pivot shaft is easy. Since the end portion is not exposed to the outside, there is an advantage of excellent aesthetics.

1 Main Body 2 Handle 3 First Hook 4 Second Hook 5 Head 6 First Pivot Axis 7 Second Pivot Axis 8 Third Pivot Axis 9 Cover 10 Housing 11 Side Frame 12 Front Connection Part 13 Rear connecting part 14 Shaft hole 15 Shaft hole 16 Shaft hole 21 Fourth pivot shaft 22 Fifth pivot shaft 23 First link 24 Second link 25 Sixth pivot shaft 26 Seventh pivot shaft 40 Protrusion 41 Hole

Claims (2)

A door having a main body fixed to the door, a handle whose head is pivotally attached to the main body, and a hook that is connected to the handle via a link and swings between an unlocked position and a locked position. A locking device comprising a housing and a cover that covers the outside of the housing. The pivot shaft of the handle and the pivot shaft of the hook are supported by the housing and attached to the cover, and both ends of these pivot shafts are attached. A door lock device characterized in that the position is regulated on the inner surface of a cover which is a constituent member of the main body. 2. The door locking device according to claim 1, wherein the head of the handle is hidden in a hole provided in the cover and pivotally attached to the housing on the back side of the cover.

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