JP2017043976A - Clamp type locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp type locking device which can reduce the size in a longitudinal direction.SOLUTION: A clamp type locking device includes a body, a handle 5 having a head journaled to the body, and an upper clamp 7 and a lower clamp 8 turned by rising/falling operation of the handle 5 and provided in opposite directions from each other. A part of a first link 21 operating the lower clamp 8 and a part of a second link 22 operating the upper clamp 7 are overlapped in a width direction of the handle 5.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a clamp-type locking device.

  In order to lock a door attached to an electric equipment storage box or the like, a clamp-type locking device is used. The clamp-type locking device has a main body attached to the door, a handle on which the head is pivotally supported by the main body, and is rotated by raising and lowering the handle to clamp the upper and lower two points of the housing. And an upper and lower clamp part provided in opposite directions to lock each other (Patent Document 1).

  Here, the upper and lower clamp parts and the link members for operating the respective clamp parts are respectively provided on both sides in the longitudinal direction of the handle across the first shaft on which the head of the handle is pivotally supported (Patent Document 1, FIG. 6). For this reason, there existed a problem that a locking device will become large in a longitudinal direction by the part of the link member arrange | positioned on both sides on both sides of a 1st axis | shaft.

Japanese Patent No. 5345086

  An object of the present invention is to provide a clamp type locking device that can solve the above-mentioned conventional problems and can reduce the size in the longitudinal direction.

  The present invention made to solve the above-mentioned problems includes a main body, a handle on which the head is pivotally supported by the main body, and upper and lower clamps that are rotated by raising and lowering the handle and provided in opposite directions. In the clamp-type locking device provided with a portion, a part of the link for operating one clamp part and a part of the link for operating the other clamp part are arranged in the width direction of the handle. It is characterized by.

  According to a second aspect of the present invention, in the clamp-type locking device according to the first aspect, the first link that operates one clamp portion and the second link that operates the other clamp portion are arranged in the width direction of the handle. And a third link for operating the second link in conjunction with the first link is arranged in the width direction of the handle.

  According to a third aspect of the present invention, in the clamp-type locking device according to the second aspect, the first shaft that pivotally supports the handle on the main body, the second shaft that pivotally attaches the handle and the first link, and the A third shaft pivotally connecting the first link and one clamp portion, and when the second shaft moves in the handle closing direction over a neutral line connecting the first shaft and the third shaft, The handle is operated in a closing direction, and the third link is pivotally attached to the first link by the third axis and is pivotally attached to the second link by the fourth axis. A fifth shaft serving as a rotation shaft portion of the third link is provided between the third shaft and the fourth shaft.

  In the clamp type locking device according to the present invention, a part of the link for operating one clamp part and a part of the link for operating the other clamp part are arranged so as to overlap in the width direction of the handle. . As a result, a part of both links can be arranged in the width direction of the handle on one side of the first shaft on which the head of the handle is pivotally supported, so the size in the longitudinal direction of the clamp-type locking device Can be reduced.

  According to a second aspect of the present invention, the first link for operating one clamp part and the second link for operating the other clamp part are arranged so as to overlap in the width direction of the handle, and interlocked with the first link. The third link for operating the second link is arranged so as to overlap in the width direction of the handle. Accordingly, the third link can be placed on one side of the first shaft so as to overlap the first link and the second link, and the size of the clamp-type locking device in the longitudinal direction can be reduced as in the first aspect. can do.

  According to a third aspect of the present invention, there is provided a first shaft for pivotally supporting the handle on the main body, a second shaft for pivotally coupling the handle and the first link, and a third pivot for pivotally coupling the first link and one clamp portion. And when the second shaft moves in the closing direction of the handle over a neutral line connecting the first and third axes, the handle is operated in the closing direction. As a result, the handle is always urged to the closed state, so that the door can be prevented from being inadvertently opened. Further, the third link is pivotally attached to the first link by the third axis, and is pivotally attached to the second link by the fourth axis, and the third link is interposed between the third axis and the fourth axis. The 5th axis | shaft used as the rotational axis part of a link was provided. As a result, the rotational force of one clamp part can be transmitted to the second link via the third link, and the second link has a structure interlocking with the operation of the first link. Even when the return force is applied, even if the third link pivotally attached to the second link tries to rotate in the direction to return the lower clamp portion, the second shaft does not exceed the above-described neutral line. The structure does not move, and it is not necessary to separately provide a toggle spring for preventing reverse operation on the second link.

It is a whole perspective view of the electric equipment storage box. It is sectional drawing and a perspective view which show the principal part (clamp type locking device) of FIG. It is the front view and perspective view of a clamp type locking device. It is a side view of a clamp type locking device. It is an exploded view of a clamp type locking device. It is the perspective view which abbreviate | omitted the main body of FIG. It is sectional drawing which shows the link mechanism of a clamp type locking device. It is sectional drawing which shows the link mechanism of a clamp type locking device. It is sectional drawing which shows the link mechanism of a clamp type locking device. It is sectional drawing which shows the link mechanism of a clamp type locking device. (A) It is a perspective view which shows the detail of a link mechanism. (B) It is a perspective view which shows the detail of the link mechanism from a different angle. (C) It is the perspective view which abbreviate | omitted the lower clamp part. It is the perspective view which looked at the clamp type locking device from another angle.

Preferred embodiments of the present invention are shown below.
As shown in FIG. 1, the door 2 attached to the electrical equipment storage box 1 is provided with a clamp-type locking device 3 for locking the door 2. As shown in FIGS. 2 and 3, the clamp-type locking device 3 includes a main body 4 attached to the door 2, a handle 5 whose head is pivotally supported by the main body 4, and a link mechanism portion 6. The link mechanism portion 6 has an upper clamp portion 7 and a lower clamp portion 8 that are provided in opposite directions and rotated by an up and down operation of the handle 5, and the upper clamp portion 7 and the lower clamp portion 8 are It is rotated by link members 21, 22, and 23 described later. As shown in FIG. 4, the lower clamp portion 8 has a hook shape, and the door 2 can be locked by clamping a metal fitting (not shown) on the electric device storage box 1 side. In this embodiment, as shown in FIG. 1, rod rods 9 are connected to the tips of the upper clamp portion 7 and the lower clamp portion 8, respectively, and the rod rod 9 is attached to the metal fitting 1 a formed in the electric device storage box 1. The upper and lower two points of the door 2 can be locked by being engaged.

  As shown in FIG. 4, a cylinder lock 32 having a key plate 31 is provided at the end opposite to the head of the handle 5 so that the handle 5 can be locked in a closed state. As shown in FIG. 5, the main body 4 is formed with a cylinder storage portion 33 in which the above-described cylinder lock 32 is stored, and further, an opening portion 34 through which the link mechanism portion 6 is inserted and the head portion of the handle 5 are inserted. The cylindrical portion 35 to be formed is formed separately from each other. The head of the handle 5 is pivotally supported by the main body 4 by the first shaft 11 inside the cylinder portion 35. In addition, 41 is a packing for waterproofing the opening 34, 42 is an O-ring for waterproofing the head of the handle 5, and 43 is a packing for waterproofing between the main body 4 and the door 2.

  As shown in FIGS. 6 and 7, the handle 5 is pivotally attached to the first link 21 by the second shaft 12, and the first link 21 is pivotally attached to the lower clamp portion 8 by the third shaft 13. ing. Further, the lower clamp portion 8 is pivotally supported on the main body 4 by a fifth shaft 15. In summary, the first shaft 11 and the fifth shaft 15 are fixing points with respect to the main body 4, and by closing the handle 5, the second shaft 12 and the third shaft 13 are moved from the state of FIG. By making an arc motion along such a trajectory, the first link 21 and the lower clamp portion 8 are rotated, and the state shown in FIG. 10 is obtained. As described above, the lower clamp portion 8 is operated to rotate by the link mechanism including the first shaft 11, the second shaft 12, the third shaft 13, and the fifth shaft 15. In this link mechanism, the straight line connecting the first shaft 11 and the third shaft 13 shown in FIG. 7 becomes the neutral line 25, and when the second shaft 12 moves beyond the neutral line 25 in the closing direction, the returning force is A toggle mechanism is constructed in which the handle 5 cannot be moved even if it is added.

  Further, when the second shaft 12 moves in the closing direction of the handle 5 beyond the neutral line 25 as shown in FIG. 10, a toggle spring 26 that acts to bias the handle 5 in the closing direction is shown in FIG. It is assumed that they are arranged as shown in FIGS. That is, as long as the second shaft 12 does not move beyond the neutral line 25 to the handle 5 side (the opening direction of the handle 5), the handle 5 is always urged to the closed state, thereby inadvertently opening the door 2. It is intended to prevent being done.

  Next, the upper clamp part 7 will be described. The upper clamp portion 7 is pivotally supported by the seventh shaft 17, and is pivotally attached to the tip end (upper end) of the second link 22 by the sixth shaft 16. A third link 23 is pivotally attached to the base end of the second link 22 by a fourth shaft 14 so as to overlap the first link 21 and the second link 22 in the width direction. The third link 23 is pivotally attached to the third shaft 13 and a fifth shaft 15 that pivotally supports the lower clamp portion 8, and is provided so as to be interlocked with the lower clamp portion 8. By being pivotally attached to the first link 21, it operates in conjunction with the first link 21. A fourth link 24 is pivotally attached to the seventh shaft 17.

  In summary, when the first link 21 is driven, the fourth shaft 14 and the sixth shaft 16 perform an arc motion from the state of FIG. The second link 22 and the upper clamp part 7 are rotated to reach the state shown in FIG. By transmitting the turning force of the lower clamp portion 8 to the second link 22 via the third link 23 by such a link mechanism, the upper clamp portion 7 is rotated in conjunction with the link mechanism. By adopting such a structure, the second link 22 is interlocked with the operation of the first link 21, and in detail, even when a force for returning to the upper clamp portion 7 is applied, Even if the pivoted third link 23 tries to rotate in the direction in which the lower clamp portion 8 is returned, the second shaft 12 does not exceed the neutral line 25 described above, and thus the lower clamp portion 8 does not move. There is no need to separately provide a toggle spring 26 for preventing reverse operation on the link 22, and the number of parts can be reduced.

  Here, as shown in FIGS. 6 and 11, the first link 21 that operates the lower clamp portion 8 and the second link 22 that operates the upper clamp portion 7 are arranged so as to overlap in the width direction of the handle 5. It is said. Thereby, since the 1st link 21 and the 2nd link 22 can be piled up and arranged on one side of the 1st axis 11 by which the head of handle 5 is pivotally supported, it is clamp type compared with the prior art. The size of the locking device 3 in the longitudinal direction can be reduced. Further, the third link 23 is also arranged so as to overlap the first link 21 and the second link 22 in the width direction of the handle 5, thereby reducing the size of the clamp-type locking device 3 in the longitudinal direction.

  In the present embodiment, the first link 21 is directly connected to the lower clamp portion 8, but is connected via another link member that acts to transmit the operation of the first link 21 to the lower clamp portion 8. There is no problem. Similarly, another link member that acts to transmit the operation of the second link 22 to the upper clamp portion 7 may be used. And it is good also as what makes the size of the longitudinal direction of the clamp type locking device 3 small by overlapping these both link members in the width direction of the handle | steering-wheel 5. FIG.

  Further, as shown in FIG. 7, the second link 22 is formed with a long hole 18 to release the movement of the second shaft 12, and the links 21, 22, and 23 can be arranged in the width direction of the handle 5. It is said.

  As shown in FIG. 2, when fixing the fourth link 24 to the main body 4, the mounting portion 27, the main body 4, and the door 2 are once attached by screws 27 a, assuming that the main body 4 is also attached to the door 2. Therefore, the size of the clamp-type locking device 3 can be further reduced. Note that the other side (lower side) of the mounting portion 27 forms a handle engaging portion 28, and the clamp-type locking device 3 of the present embodiment has the door 2 engaged with the handle engaging portion 28. , Press-fit with screws 28a, and fix to door 2 with screws 27a.

DESCRIPTION OF SYMBOLS 1 Electric equipment storage box 1a Metal fitting 2 Door 3 Clamp type locking device 4 Main body 5 Handle 6 Link mechanism part 7 Upper clamp part 8 Lower clamp part 9 Rod rod 11 1st axis | shaft 12 2nd axis | shaft 13 3rd axis | shaft 14 4th Shaft 15 5th shaft 16 6th shaft 17 7th shaft 18 Long hole 21 1st link 22 2nd link 23 3rd link 24 4th link
25 Neutral line 26 Toggle spring 27 Mounting portion 27a Screw 28 Handle engaging portion 28a Screw 31 Key plate 32 Cylinder lock 33 Cylinder storage portion 34 Opening portion 35 Tube portion 41 Packing 42 O-ring 43 Packing

Claims (3)

The body,
A handle on which the head is pivoted on the main body,
In the clamp-type locking device provided with the upper and lower clamp portions provided in opposite directions, which are rotated by the raising and lowering operation of the handle,
A part of the link that operates one clamp part,
A part of the link for operating the other clamp part,
A clamp-type locking device characterized by being arranged in the width direction of the handle. A first link for operating one clamp part;
A second link for operating the other clamp part,
While overlapping the handle in the width direction,
The clamp-type locking device according to claim 1, wherein a third link that operates the second link in conjunction with the first link is disposed so as to overlap in the width direction of the handle. The clamp type locking device according to claim 2,
A first shaft that pivotally supports the handle on the main body;
A second shaft pivotally connecting the handle and the first link;
A third shaft pivotally connecting the first link and one clamp part;
When the second shaft moves in the closing direction of the handle over a neutral line connecting the first and third axes, the handle is operated in the closing direction,
The third link is
Pivotally attached to the first link by the third axis,
It shall be pivotally attached to the second link by the fourth axis,
A clamp-type locking device, wherein a fifth shaft serving as a pivot shaft portion of the third link is provided between the third shaft and the fourth shaft.