JP6689537B2 - Clamp type locking device - Google Patents

Description

  The present invention relates to a clamp type locking device provided on a door such as a box for storing electrical equipment.

  A clamp type locking device is used to lock a door attached to a box for storing electrical equipment. Such a clamp-type locking device includes a main body attached to a door, a handle whose head is pivotally supported by the main body, and a link mechanism section having a clamp section that is rotated by an undulating operation of the handle. I have it. The clamp part is composed of upper and lower clamp parts that are provided in opposite directions, and the upper and lower clamp parts sandwich the locking pieces formed on the housing by operating the handle, respectively. Will be locked (Patent Document 1). More specifically, the structure is such that when the handle is closed, the upper and lower clamps are rotated in the closing direction to clamp the locking piece, and by raising the handle, the upper and lower clamps are rotated in the opening direction. is there.

  Here, as described above, if the locking piece is formed on the housing side and the locking pieces are sandwiched between the upper and lower clamp portions, the clamp portion receives the reaction force from the locking piece and the clamp portion receives the reaction force. The force urges the handle toward the body. Therefore, for example, even if a packing is interposed between the handle and the main body for waterproofing, it is possible to prevent the handle from rising due to the repulsion of the packing.

  However, the structure is such that the rod bars are connected to the upper and lower clamp parts to engage with the engagement parts on the housing side, and when the locking pieces sandwiched by the clamp parts are not formed, the reaction force received by the clamp parts is insufficient. There was a risk that the handle would rise.

Japanese Patent No. 5345086

  The object of the present invention is to solve the above-mentioned conventional problems and to generate a load on the clamp portion and press the handle against the main body even when there is no locking piece sandwiched by the clamp portion on the housing side. (EN) Provided is a clamp type locking device which can be urged to prevent the handle from rising when closed.

  The present invention made to solve the above problems includes a main body, a handle whose head is pivotally supported by the main body, and a link mechanism portion having a clamp portion that is rotated by an undulating operation of the handle. The clamp type locking device is characterized in that a bush for pressing the clamp part when the handle is closed is interposed between the main body and the clamp part.

  The invention according to claim 2 is the clamp type locking device according to claim 1, characterized in that the bush is an elastic member.

  According to a third aspect of the present invention, in the clamp type locking device according to the first or second aspect, the bush is detachably attached to the tip of the clamp portion.

  The clamp type locking device according to the present invention has a bush interposed between the main body and the clamp section for pressing the clamp section when the handle is in the closed state. Even when the clamp portion is biased in the closed state and there is no locking piece sandwiched by the clamp portion on the housing side, the handle can be prevented from rising.

It is the whole perspective view showing the box for electric equipment storage. It is an enlarged view of the front surface and the back surface of a door. It is a perspective view of a clamp type locking device. It is a perspective view which abbreviate | omitted the main body in FIG. It is sectional drawing of a clamp type locking device. It is sectional drawing which shows the open state of a handle. It is a figure which shows the state which moved the handle in the closing direction from FIG. It is a figure which shows the state which moved the handle in the closing direction from FIG. It is a figure which shows the state which moved the handle | steering-wheel in the closing direction from FIG. It is a figure which shows the state which moved the handle in the closing direction from FIG. It is sectional drawing which shows the closed state of a handle. It is a perspective view which shows the bush attachment state of this invention. It is the whole perspective view showing the clamp type locking device of the present invention. It is sectional drawing which shows the bush attachment state of this invention. It is an enlarged view showing the bush of the present invention.

Preferred embodiments of the present invention are shown below.
As shown in FIG. 1, a door 2 that is openably and closably attached to a box 1 for storing electrical equipment is provided with a clamp type locking device 3 for locking the door 2. As shown in FIG. 2, 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 section 6. 3 to 5 show the details of the clamp type locking device 3, in which the link mechanism part 6 includes a fourth link 7 and a lower clamp 7 which are provided in opposite directions and are rotated by the raising and lowering operation of the handle 5. The fourth link 7 and the lower clamp portion 8 have a portion 8 and are rotated by first to third links 21, 22, 23 described later. The lower clamp part 8 has a hook shape, and it is also possible to clamp the locking piece formed on the side of the electrical equipment storage box 1 side, but in the present embodiment, such a locking piece is mounted on the housing side. Without forming them, the rod rods 9 are respectively connected to the tips of the fourth link 7 and the lower clamp portion 8 as shown in FIG. 1, and the rod rods 9 are engaged with the engaging portions 10 formed in the electrical equipment storage box 1. The upper and lower two points of the door 2 can be locked together. The rod rod 9 of the present embodiment is detachably provided on the fourth link 7 and the lower clamp portion 8 as described later, and the lower clamp portion 8 is used to fix the rod rod 9 to the electrical equipment storage box 1. And a structure for fixing the rod rod 9 together.

  As shown in FIG. 3, a cylinder lock 30 having a plate 30a that can be inserted into the recess 5a of the handle 5 is provided at the end of the handle 5 opposite to the head, and the handle 5 is closed. It can be locked with. Further, the head portion of the handle 5 is pivotally supported by the first shaft 11 inside the tubular portion 31 formed in the main body 4 as shown in FIG. Incidentally, 33 is a packing for waterproofing the opening 32 formed in the main body 4.

  As shown in FIGS. 4 and 5, 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 the fourth shaft 14. In summary, the first shaft 11 and the fourth shaft 14 are fixing points to the main body 4, and by closing the handle 5, the second shaft 12 and the third shaft 13 are changed from the state of FIG. 6 to an arrow in FIG. By performing the arc movement shown, the first link 21 and the lower clamp portion 8 are rotated, and the state shown in FIG. 8 is obtained. In this way, the lower clamp portion 8 is operated to be rotated by the link mechanism including the four points of the first shaft 11, the second shaft 12, the third shaft 13, and the fourth shaft 14. In this link mechanism, the straight line connecting the first shaft 11 and the third shaft 13 shown by the dotted line in FIG. 6 becomes the neutral line 25, and the second shaft 12 crosses the neutral line 25 from the state of FIG. 10 and 11, when the lower clamp portion 8 is pressed and tries to rotate in the returning direction, the lower clamp portion 8 restricts the closing direction to prevent the reverse operation of the handle 5. As shown in FIG. 2, a toggle mechanism for urging the handle 5 so as to closely contact the main body 4 is provided.

  Next, the fourth link 7 will be described. The fourth link 7 is pivotally supported by the link support portion 24 by the seventh shaft 17, and further pivotally attached to the tip (upper end) of the third link 23 by the sixth shaft 16. A second link 22 arranged so as to overlap the first link 21 and the third link 23 in the width direction is pivotally attached to the base end of the third link 23 by the fifth shaft 15. . The second link 22 is provided so as to be pivotally attached to the third shaft 13 and the fourth shaft 14 on which the lower clamp portion 8 is axially supported, and to interlock with the lower clamp portion 8. Since it is also pivotally attached to the first link 21 by the shaft 13, it operates integrally with the first link 21.

  In summary, when the first link 21 is driven, the fifth shaft 15 and the sixth shaft 16 move in an arc from the state of FIG. 6 along the locus shown by the arrow in FIG. The 3rd link 23 and the 4th link 7 are rotated, and it will be in the state of FIG. By adopting such a structure, since the third link 23 is linked to the operation of the first link 21, a reaction force is applied to the fourth link 7 and the second link pivotally attached to the third link 23 is applied. Even if the link 22 tries to rotate in the direction of returning the lower clamp part 8, the second clamp 12 does not move above the neutral line 25, so that the lower clamp part 8 does not move.

  In the present embodiment, the long hole 18 is formed in the third link 23 to allow the movement of the second shaft 12 to escape, so that the first link 21, the second link 22, and the third link 23 are connected to the handle 5. The clamp type locking device 3 can be arranged so as to be overlapped in the width direction, whereby the size in the longitudinal direction of the clamp type locking device 3 can be reduced.

  Further, a toggle spring 26 is provided which acts to bias the handle 5 in the closing direction when the second shaft 12 moves in the closing direction of the handle 5 beyond the neutral line 25. The handle 5 is urged to the closed state by the toggle spring 26 unless the handle 5 moves beyond the neutral line 25 toward the handle 5 side (opening direction of the handle 5), which prevents the door 2 from being opened carelessly. It is supposed to prevent. Further, in the open state of the handle 5, that is, in the state where the second shaft 12 exceeds the neutral line 25, the handle 5 operates so as to be urged to the open state by the toggle spring 26.

  Here, when the handle 5 is closed from the state shown in FIG. 6 to the state shown in FIG. 8, further rotation of the third link 23 and the fourth link 7 is restricted. Therefore, in FIGS. 8 to 11, when the handle 5 is closed, the second shaft 12 slides in the elongated hole 18 formed in the third link. Due to the movement of the second shaft 12, the lower clamp portion 8 is slightly pushed back in the opening direction. Here, since the packing 33 is provided between the handle 5 and the main body 4, in order to prevent the handle 5 from rising due to the repulsive force of the packing 33 from the closed state of the handle 5 in FIG. It is necessary to urge the clamp portion 8 in the opening direction. When the handle 5 is made of a light material such as a resin material or when the force of the toggle spring 26 is small, the rod bar 9 is engaged with the housing-side engaging portion 10 as described above. However, this is not sufficient as a load for urging the lower clamp portion 8 so as not to rotate clockwise.

  Therefore, in the present embodiment, as shown in FIGS. 12 to 14, the bush 40 formed of an elastic member is interposed between the main body 4 and the lower clamp portion 8. The bush 40 pushes the lower clamp portion 8 by the elasticity of the bush 40 in the closed state of the handle 5, that is, pushes the lower clamp portion 8 in the opening direction. In the present embodiment, the bush 40 is detachably attached to the lower clamp portion 8, but the bush 40 may be provided on the main body 4 side. Further, as shown in FIG. 15, the bush 40 has a space portion 41 inside thereof so that it can be elastically deformed. By thus forming the bush 40 with the elastic member, the lower clamp portion 8 can be reliably pressed in the opening direction. It should be noted that the bush 40 has a structure in which the rod rod co-fastening portion 42 is formed and is detachably fixed to the lower clamp portion 8 together with the rod rod 9 as shown in FIG. It is not limited to.

  As described above, by interposing the bush 40 that presses the lower clamp part 8 between the main body 4 and the lower clamp part 8, that is, presses the lower clamp part 8 in the opening direction, in the closed state of the handle 5. The lower clamp portion 8 is urged in the opening direction. More specifically, when the lower clamp portion 8 is pressed, that is, when the lower clamp portion 8 is pressed in the opening direction, the first link 21 pivotally supported by the lower clamp portion 8 by the third shaft 13, and the first link 21 and the handle. The second shaft 12 to which 5 and 5 are pivotally attached is urged in the counterclockwise direction. Here, in the closed state of the handle 5, the second shaft 12 on which the handle 5 is pivotally mounted is located below the neutral line 25 connecting the first shaft 11 and the third shaft 13, and thus the second shaft 12 is When is urged in the counterclockwise direction, the handle 5 is also urged to come into close contact with the main body 4, so that the handle 5 can be prevented from rising. Therefore, even if there is no locking piece on the housing side, it is possible to prevent the handle 5 from rising due to the packing 33 interposed between the handle 5 and the main body 4. Further, the bush 40 is detachably provided on the lower clamp portion 8 to enhance workability at the time of attachment and detachment. Furthermore, since it is not necessary to form a locking piece on the housing side, it is possible to reduce the number of processing steps and the number of parts, and it is necessary to separately provide a locking piece for the lower clamp portion 8 in the electrical device storage box 1. Since it does not exist, the waterproof structure for the electrical equipment storage box 1 can be minimized.

1 Electrical Equipment Storage Box 2 Door 3 Clamp Type Locking Device 4 Main Body 5 Handle 5a Recess 6 Link Mechanism Section 7 Fourth Link 8 Lower Clamp Section 9 Rod Bar 10 Engaging Section 11 First Axis 12 Second Axis 13 Third Shaft 14 4th shaft 15 5th shaft 16 6th shaft 17 7th shaft 18 Slot
21 First Link 22 Second Link 23 Third Link 24 Link Support 25 Neutral Line 26 Toggle Spring 30 Cylinder Lock 30a Plate 31 Tube 32 Opening 33 Packing 40 Bushing 41 Space 42 Rod Rod Joint Tightening

Claims (3)

Body and
A handle whose head is pivoted on this body,
A clamp type locking device comprising: a link mechanism section having a clamp section that is rotated by the raising and lowering operation of the handle,
A clamp-type locking device characterized in that a bush for pressing the clamp portion when the handle is closed is interposed between the main body and the clamp portion.   The clamp type locking device according to claim 1, wherein the bush is an elastic member.   The clamp type locking device according to claim 1 or 2, wherein the bush is detachably attached to the tip of the clamp portion.

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