JP2012180676A - Lock handle device for door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock handle device for a door, capable of an electric unlocking operation by a solenoid and capable of unlocking by a lock operation when unlocking is impossible due to a fault.SOLUTION: A locking unit 27 includes a latch lever 28, a lock unit 29, and a solenoid unit 30. The latch lever 28 is engaged with an engaging part 26 of a lever handle 5 at a lock position at an engaging position, releases it at a non-engaging position, and is rotationally urged to the engaging position at normal time. The lock unit 29 is capable of rotating the latch lever 28 to the non-engaging position by a key operation. The latch lever 28 is rotated to the non-engaging position tentatively by being pushed by the engaging part 26 of the lever handle 5 brought down and turned to the lock position, is then rotated and restored to the engaging position, and automatically locks the lever handle 5. When the solenoid unit 30 is energized, the latch lever 28 releases the lever handle 5, and the opening operation of a door D is made possible.

Description

  The present invention relates to a clamp-type door lock handle device for fastening and locking a closed door to a fixed frame body such as a cabinet body in an electrical equipment storage cabinet or the like.

  As a door lock handle device for a cabinet for storing electrical equipment such as a distribution board or a distribution board, for example, a double clamp type door lock handle device described in Patent Document 1 is known. The lock handle device is fixed to the door at a position facing the first strike and the second strike when the door is closed; a first strike and a second strike provided at a distance from each other on the fixed frame body side; A main body case; a lever handle housed in the main body case, pivotally attached to the main body case by a first fixed pivot parallel to the front surface of the door, and provided with a drive arm at a position on the tip side of the first fixed pivot; A connecting link whose front end is pivotally attached to the tip of the drive arm by a first movable shaft parallel to the fixed pivot; a second link disposed parallel to the first fixed pivot and obliquely rearward of the first fixed pivot A first clamp body having a base end portion pivotally attached to the main body case by a fixed pivot, and a distal end hook portion protruding to the back side of the main body case engaging and disengaging with the first strike; and parallel to the first fixed pivot A second clamp body in which a base end portion is pivotally attached to the main body case by a third fixed pivot disposed obliquely rearward from the first fixed pivot, and a distal end hook portion protruding to the back side of the main body case is engaged with and disengaged from the second strike The second fixed pivot and the third fixed pivot are arranged symmetrically with respect to an operation reference line perpendicular to the door front surface and passing through the first fixed pivot, and the movement is parallel to the first fixed pivot The passive shoulder of the first clamp body and the passive shoulder of the second clamp body are connected to the rear end of the connection link by the second movable pivot that moves along the reference line, and the front hook portion of the first clamp body is In the door locked state in which the first strike is engaged and the tip hook portion of the second clamp body is engaged with the second strike, the first movable pivot comes to a position beyond the operation reference line toward the second fixed pivot. On the other hand, the front end of the first clamp body In a door unlocked state in which the hook part is detached from the first strike and the tip hook part of the second clamp body is detached from the second strike, the position where the first movable pivot exceeds the operation reference line toward the third fixed pivot It is something that comes to come. In this apparatus, in order to move the second movable pivot along the operation reference line, both end portions thereof are inserted into guide slots formed in the main body case. In addition, an interlocking slot is formed in each of the passive shoulder of the first clamp body and the passive shoulder of the second clamp body, and the second movable pivot is inserted into these interlocking slots so that both clamp bodies are connected to the link link. It is the structure connected with a rear-end part.

JP 2006-63673 A

  The invention according to this application provides a door lock handle device that can be electrically unlocked by a solenoid unit and can be unlocked by a key lock operation when unlocking is impossible due to an electrical failure. It is an object.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the door lock handle device of the invention according to this application is provided with strikes 1 and 2 provided on the fixed frame side, and at a position facing the front of the strikes 1 and 2 when the door D is closed. A handle base 3 fixed to the door D, a lever handle 5 pivotably mounted on the handle base 3 on the base end side by a first fixed pivot 4 parallel to the front surface of the door D, and a base end portion of the handle base 3 A clamp body 8, 21 pivotally attached to the handle base 3 by a second fixed pivot 7 parallel to the first fixed pivot 4, and a handle base 3 for restraining the clamp body 8, 21 at a position facing the fallen lever handle 5. And a locking unit 27. The lever handle 5 is rotatable between a lying locked position and a standing unlocked position, and extends vertically from the proximal end to the distal end at the locked position, and is locked at a position closer to the distal end than the first fixed pivot 4. And a drive arm 6 extending rearward. The clamp bodies 8 and 21 have base end portions 9 and 22, hook portions 10 and 23 projecting from the base end portion to the back side of the handle base 3, and directions from the base end portions 9 and 22 to the hook portions 10 and 23. Passive shoulders 11, 24 extending to The base end portions 9 and 22 are pivotally attached to the handle base by the second fixed pivot 7. The passive shoulder portions 11 and 24 are connected to the lever handle 5 via the connecting link 14 and rotate forward and backward between the locked position and the unlocked position in conjunction with the lever handle 5. The hook portions 10 and 23 engage with the strikes 1 and 2 at the locked position, and the hook portions 10 and 23 are detached from the strikes 1 and 2 at the unlocked position. Furthermore, the lever handle 5 includes an engaging portion 26 that is restrained by the locking unit 27 in the locked position. The locking unit 27 includes a latch lever 28, a lock unit 29, and a solenoid unit 30. The latch lever 28 is pivotally supported on the handle base 3 by a latch shaft 33 parallel to the first fixed pivot 4, and engages with the engagement portion 26 of the lever handle 5 in the locked position, and is detached from it. It can freely rotate forward and backward between the engagement positions and is normally urged to rotate to the engagement position. The lock unit 29 is fixed to the handle base 3, and the latch lever 28 can be rotated to a non-engagement position by a key operation. The latch lever 28 is pushed by the engaging portion 26 of the lever handle 5 that turns down to the lock position and once rotates to the non-engagement position, and then returns to the engagement position. The solenoid unit 30 is fixed to the handle base 3, holds the latch lever 28 in the disengaged position when energized, and normally releases the latch lever 28.

  According to the invention according to this application, there is provided a door lock handle device that can be electrically unlocked by a solenoid unit and can be unlocked by a lock operation using a key when unlocking is impossible due to an electrical failure. can do.

It is a longitudinal cross-sectional view of the unlocking state of the lock handle apparatus for doors concerning this invention. It is a longitudinal cross-sectional view in the middle of operation of the lock handle apparatus for doors of FIG. It is a longitudinal cross-sectional view of the lock state of the lock handle apparatus for doors of FIG. It is a longitudinal cross-sectional view of a part of the unlocking state by the solenoid of the lock handle device for doors of FIG. It is a partial longitudinal cross-sectional view of the unlocking state by the lock of the lock handle apparatus for doors of FIG. It is the rear view which looked at the lock handle device for doors of Drawing 1 from the back side of the door. It is a top view of the lock handle apparatus for doors of FIG.

Embodiments of the present invention will be described with reference to the drawings.
1 to 3 are longitudinal side views showing a state in which the lock handle device of the present invention is attached to the door D. FIG. 1 shows an unlocked state, FIG. 2 shows an operating state, and FIG. 3 shows a locked state. Show. In the figure, reference numeral 1 denotes a first strike and 2 denotes a second strike, which are fixed to a peripheral flange B1 of an opening in a fixed frame B which is a main body of a cabinet or the like with a predetermined interval in the vertical direction.

  The handle base 3 of the lock handle device is arranged on the front surface of the free end portion side of the door D so as to face the strikes 1 and 2 when the door is closed, and is fastened and fixed to the door D with a screw from the back (rear surface) side of the door D. Is done.

  The first fixed pivot 4 is parallel to the front surface of the door D and is supported by the left and right side wall portions of the handle base 3 at both ends, and the intermediate portion penetrates the upper end (base end) portion of the lever handle 5 in the horizontal direction. The lever handle 5 has a halfway position (FIG. 2) between a non-locking position (FIG. 1) standing up with respect to the handle base 3 and a lying locked position (FIG. 3) around the first fixed pivot 4. And is arranged so as to extend in the vertical direction along the front surface of the door D at the lock position. The lever handle 5 has a drive arm 6 that extends rearward (back side of the door) from the first fixed pivot 4 in the locked position, and an engaging portion 26 that protrudes toward the handle base 3 in the locked position. The lamp display opening 44, the switch pressing projection 45, and the key insertion opening 46 are provided at the lower end side and in the middle part. The engaging portion 26 is restrained by a locking operation of a locking unit 27 provided on the handle base 3 side.

  The second fixed pivot 7 is parallel to the first fixed pivot 4, and both ends are supported by the left and right side wall portions of the handle base 3 at an obliquely lower rear position of the first fixed pivot, and the intermediate portion is the base of the first clamp body 8. The end 9 is penetrated in the horizontal direction. The first clamp body 8 includes a base end portion 9, a hook portion 10 protruding from the base end portion 9 to the back side of the handle base 3, and a passive shoulder portion 11 extending from the base end portion in a direction opposite to the hook portion 10. And have. A spring receiving protrusion 12 protrudes from the base end portion 9.

  The first movable pivot 13 is parallel to the first fixed pivot 4 and is supported at both ends by the tip of the drive arm 6 in the lever handle 5. The intermediate portion of the first movable pivot 13 passes through the first pivot point of the first connection link 14. The first connecting link 14 is substantially L-shaped, has a first pivot point at one end, a second pivot point in the middle, a third pivot point at the other end, and a spring near the first pivot point. A receiving projection 15 is provided.

  The second movable pivot 16 is parallel to the first fixed pivot 4 and pivotally supports the second pivot point of the first connection link 14 and one end of the second connection link 17. The third movable pivot 18 is parallel to the first fixed pivot 4 and pivotally supports the third pivot point of the first connection link 14 and the passive shoulder 11 of the first clamp body 8. A reversing spring is provided between the spring receiving protrusion 12 of the first clamp body 8 and the spring receiving protrusion 15 of the first connecting link 14 (substantially between the second fixed pivot 9 and the first movable pivot 13). 19 is inserted.

  The third fixed pivot 20 is parallel to the first fixed pivot 4, and both ends are supported by the left and right side wall portions of the handle base 3 at the diagonally upper and rear positions of the first fixed pivot, and the middle portion is the base of the second clamp body 21. The end part 22 is penetrated in the horizontal direction. The second clamp body 21 has the same shape as the first clamp body 8 and is provided in a vertically inverted state. The base end portion 22, and the hook portion 23 that protrudes from the base end portion 22 to the back side of the handle base 3, It has a passive shoulder 24 that extends in the opposite direction from the hook 23 from the proximal end. The fourth movable pivot 25 is parallel to the first fixed pivot 4 and pivotally supports the other end of the second connection link 17 and the passive shoulder 24 of the second clamp body 21.

  Accordingly, the first and second clamp bodies 8 and 21 rotate forward and backward between the unlocked position (FIG. 1) and the locked position (FIG. 3) in conjunction with the up-and-down rotation of the lever handle 5. The hook portions 10 and 23 are engaged with the first and second strikes 1 and 2 from the upper side or the lower side, respectively, and the hook portions 10 and 23 are engaged with the first and second strikes 1 and 2 in the unlocked position. Leave.

  The reversing spring 19 is substantially engaged at one end side with the first movable pivot 13 and at the other end with the second fixed pivot 7, so that the lever handle 5 in the unlocked position is raised (see FIG. 1) (applying a counterclockwise rotational force about the fixed pivot 4 in FIG. 1), the pressure dead center is exceeded during the rotation from the unlocked position to the locked position (FIG. 2), and the locked position (FIG. 3). ) Is held in a lying state (a clockwise rotational force is applied about the shaft 4 in FIG. 3).

  As shown in FIG. 1, the main body of the lock handle device includes a first movable pivot (first pivot point) 13 and an unlocked position where the hook portions 10 and 23 of the clamp bodies 8 and 21 are detached from the strikes 1 and 2. While the straight line L1 connecting the second movable pivot (second pivot point) 16 is below the reference straight line L extending perpendicularly to the door front surface from the second movable pivot (second pivot point) 16, FIG. As shown, at the locked position where the hook portions 10 and 23 of the clamp bodies 8 and 21 are engaged with the strikes 1 and 2, the respective portions are arranged so that the straight line L1 comes to a position exceeding the reference straight line L. .

  A locking unit 27 for locking the lever handle 5 in the locked position is provided on the handle base 3 at a position corresponding to the lower end side of the lever handle 5. The locking unit 27 includes a latch lever 28, a lock unit 29, a solenoid unit 30, a limit switch 42, and an LED lamp 43.

  The handle base 3 is provided with a latch storage space 31 at a position corresponding to the engaging portion 26 of the lever handle 5, and a lock storage space 32 is provided at a position corresponding to the opening 46. A latch lever 28 is pivotally supported in the latch storage space 31 by a latch shaft 33 parallel to the first fixed pivot 4, and a lock cylinder case 34 is fixed in the lock storage space 32.

  The latch lever 28 includes a hook portion 40 that extends forward from the latch shaft 33 and an operation portion 41 that extends rearward. The latch lever 28 engages with the engaging portion 26 of the lever handle 5 in the locked position. It is freely rotatable between a position (FIG. 3) and a non-engagement position (FIG. 1) where it is separated from the position (FIG. 1). Accordingly, the latch lever 28 is returned to the engagement position after the hook portion 40 is pushed by the engagement portion 26 of the lever handle 5 that rotates to the lock position and is temporarily rotated to the non-engagement position. As shown, the hook portion 40 is engaged with the engaging portion 26. In this state, the lever handle 5 is locked and cannot be raised, and therefore the door cannot be opened.

  The lock unit 29 can slide the slide plate 36 by operating a key inserted through the opening 46 and rotate the latch lever 28 to the non-engagement position as shown in FIG. This operation is urgently performed only when the solenoid unit 30 is inoperable due to an electrical failure.

  The solenoid unit 30 is located on the back side of the door D and is provided on a support plate 37 that is fixed to the lower end portion of the handle base 3. The solenoid unit 30 includes a solenoid body 38 and a connection fitting 39 connected to the iron core thereof. The solenoid body 38 is fixed to the support plate 37, and the connection fitting 39 is connected to the operation portion 41 of the latch lever 28. When the solenoid body 38 is energized, the latch lever 28 is pulled down and held in the non-engaged position as shown in FIG. 4, and the latch lever 28 can be released and engaged at all times as shown in FIGS. Put in state. When the latch lever 28 is released, the hook portion 40 engages with the engaging portion 26, and the lever handle 5 is locked.

  The limit switch 42 is fixed to the back side of the handle base 3, and the hinge lever thereof is disposed so as to face the pressing protrusion 45 of the lever handle 5 through the opening 47 of the handle base 3. When the lever handle 5 is in the locked position, the limit switch 42 closes the power supply circuit to the solenoid unit 30, but when the lever handle 5 stands up, the power supply circuit is opened to stop power supply to the solenoid unit 30.

  The LED lamp is mounted on the handle base 3 at a position corresponding to the opening 44 of the lever handle 5 and is turned on when the solenoid unit 30 is energized, thereby indicating that the lock handle device is in the unlocked state. .

  That is, when power is supplied to the solenoid unit 30 by the unlock command signal in the state of FIG. 3 in which the lever handle 5 is locked at the locked position, the latch lever 28 is pulled as shown in FIG. The engaging part 26 of the lever handle 5 is released. A power supply state is maintained for the solenoid unit 30. Even when the engaging portion 26 is released, the lever handle 5 is held in the locked position by the spring 19. During this time, the LED lamp 43 is turned on to display the unlocked state. When the lever handle 5 is pulled up in this state, the limit switch 42 is cut off, the power supply to the solenoid unit 30 is cut off, and the latch lever 28 returns to the engaged position. When the lever handle 5 is erected and the door D is opened, and the door D is closed again after the required work is completed, when the lever handle 5 is laid down, the latch lever 28 automatically engages with the engaging portion 26 of the lever handle 5. The lever handle 5 is engaged and locked in the locked position.

  Now, in the unlocked state shown in FIG. 1, the lever handle 5 stands from the handle base 3 and is held in the standing state by the reversing spring 19. The hook portions 10 and 23 of the first and second clamp bodies 8 and 21 are detached from the first and second strikes 1 and 2, respectively. The straight line L1 is on the lower right side of the reference straight line L. The solenoid unit 30 is not energized and the latch lever 28 is in the engaged position.

  From this state, when the lever handle 5 is rotated counterclockwise (clockwise) against the reversing spring 19, the reversing spring 19 reaches the pressure dead center at the intermediate position shown in FIG. Is biased in the lying down direction, reaches the lock position shown in FIG. 3, and is automatically locked by the latch lever 28. During this time, the straight line L1 is disposed on the upper right side, exceeding the reference straight line L upward. In this state, when the latch lever 28 is not engaged, the hooks 10 and 23 are released in the direction of disengagement due to external impacts and vibrations, the weight of the door, the internal pressure of the fixed frame, etc. Even if the portion 23 receives a rotational force in the counterclockwise direction in the drawing, the connecting link 14 cannot rotate, so that the hook portions 10 and 23 do not detach from the strikes 1 and 2. Since the door D is locked at two points, a good sealed state is ensured. In order to open the door D again, it is necessary to energize the solenoid unit 30. When the solenoid unit 30 is energized, the LED 43 lamp is turned on. When the solenoid unit 30 does not operate due to some trouble, the lock unit 29 is operated by a key to release the latch lever 28 from the engaging portion 26 of the lever handle 5, thereby pulling up the lever handle 5 and opening the door D. Can be opened.

DESCRIPTION OF SYMBOLS 1 1st strike 2 2nd strike 3 Handle base 4 1st fixed pivot 5 Lever handle 6 Drive arm 7 2nd fixed pivot 8 1st clamp body 9 Base end part 10 Hook part 11 Passive shoulder part 12 Spring receiving protrusion 13 1st Movable pivot 14 Connection link 15 Spring receiving projection 16 Second movable pivot 17 Second connection link 18 Third movable pivot 19 Reversing spring 20 Third fixed pivot 21 Second clamp body 22 Base end 23 Hook 24 Passive shoulder 25 First 3 movable pivot 26 engaging portion 27 locking unit 28 latch lever 29 lock unit 30 solenoid unit 31 latch storage space 32 lock storage space 33 latch shaft 34 cylinder case 35 spring 36 slide plate 37 support plate 38 solenoid body 39 connection fitting 40 hook portion 41 Operation section 42 Limit switch 43 LED lamp 44 Flop display opening 45 switch pressing projection 46 key insertion opening B stationary frame element B1 periphery wall section D door L reference line L1 first, straight line connecting the second pivot point

Claims (3)

A strike provided on the fixed frame side; a handle base fixed to the door at a position facing the front of the strike when the door pivotally supported on the fixed frame side is closed; a first fixed parallel to the front surface of the door By pivoting pivotally on the handle base at the base end side by the pivot, it can rotate between the fallen locked position and the standing unlocked position, and extends vertically from the base end to the distal end at the lock position. And a lever handle having a drive arm that extends rearward in the locked position at a position on the tip side of the first fixed pivot,
A proximal end portion; a hook portion projecting from the proximal end portion toward the back side of the handle base; a passive shoulder portion extending from the proximal end portion in a direction opposite to the hook portion; The second fixed pivot that is parallel to the fixed pivot is pivotally attached to the handle base, and the passive shoulder is connected to the lever handle via a connecting link, so that the lever handle is linked to the locked position and the unlocked position. A clamp body that rotates forward and backward, the hook portion engages with the strike in the locked position, and the hook portion disengages from the strike in the unlocked position;
A locking unit provided on the handle base at a position facing the lever handle at a locked position,
The lever handle includes an engaging portion that is restrained by the locking unit in a locked position;
The locking unit is pivotally supported on the handle base by a latch shaft that is parallel to the first fixed pivot, so that the locking unit is engaged with the engaging portion of the lever handle in the locked position and is disengaged. It can rotate forward and backward between the positions, and is normally urged to rotate to the engaged position, and is pushed by the engaging portion of the lever handle that rotates to the locked position, and then once rotated to the non-engaged position. A latch lever that is rotated and restored to a mating position; a lock unit that is fixed to the handle base and is capable of rotating the latch lever to a non-engagement position by a key operation; A door lock handle device comprising: a solenoid unit which is held in a non-engagement position and normally releases a latch lever. The locking unit is fixed to the handle base so as to be exposed forward, and an LED lamp that is lit when the solenoid unit is energized; and is fixed to the handle base and detects that the lever handle is in the locked position. A limit switch that cuts off the power to the LED lamp;
2. The door lock handle device according to claim 1, further comprising a display window that exposes the LED lamp forward at a position facing the LED lamp in a lock position. The latch lever has an operation portion extending rearward of the handle base on the proximal end side, and on the distal end side, the latch lever is slidably contacted with an engagement portion of the lever handle that rotates to the lock position. Once it is rotated to the non-engagement position, it has a hook part that engages with the engagement part in the lock position,
The door locking handle device according to claim 1, wherein the locking unit includes a connection portion coupled to an operation portion of the latch lever.

Images