JPH0539162Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a push-rotation type flat locking device for locking and locking a door to a fixed frame such as a switchboard storage box body.

(Prior Art) In the conventional push-rotation-operated flat lock device disclosed in Japanese Utility Model Publication No. 52-41035, an operating plate is housed in the front opening of a case fixed to the door, and the base end of the operating plate is The lock plate is pivoted to the left and right side walls of the case by a transverse pivot, the lock plate is pivoted to the back wall of the case by a front-back pivot, and an actuating protrusion protrudes from the back of the base end of the operation plate. It is engaged with the passive hole of the lock.

(Problem to be solved by the invention) In this conventional device, when the front inclined part of the base end of the operating plate is rotated so as to be pushed into the case, the actuating protrusion presses the inner surface of the driven hole, and the lock is rotated. Then, the tip of the lock plate separates from the receiving part on the fixed frame side.

However, the conventional device does not have a means to hold the operation plate in the pushed and rotated position, so if you release your finger from the tip of the operation plate after opening the door, the operation plate will be locked due to the uneven load of the lock and the operation plate. However, the return rotation of the operation plate does not necessarily mean that the lock plate and the receiving portion are actually engaged.

Nevertheless, if a worker who is unfamiliar with the operating mechanism of this locking device is relieved by simply turning the operation panel back and leaves the work site without checking that the door is locked, the door may be left unlocked. become,
Unauthorized opening of the door may result in electric shock.

Therefore, the purpose of the present invention is to eliminate the risk of electric shock due to the handle being held in the push-in and rotating position when the lock lever does not engage with the receiving part on the fixed frame side, resulting in the door being left unlocked. To provide a push-rotation type flat lock device that does not require a separate handle or handle device for opening the door, since the door automatically partially opens when the handle body is pushed and rotated. be.

(Means for Solving the Problems) As explained below using the reference numerals in the attached drawings, the push-rotation operation type flat lock device of the present invention has a recessed portion 1a depressed on the back side of the door 23,
A case 1 has a bearing plate part 12 protruding from the back wall of the recess 1a; the base end is pivoted to the bearing plate part 12 by a pivot 11 parallel to the front surface of the case 1, and the distal end is attached to a fixed frame. A lock lever 10 engages and disengages from a receiving portion 14 on the side of the body 31; the lock lever 10 is rotatably housed in the front opening 2 of the recess 1a, and is pivotally connected to the side wall of the recess 1a by a pivot 5 parallel to the front surface of the case 1; Operation panel 3
; an operating rod 6 protruding from the back surface of the operation plate 3 located between the pivot 5 and the pivot 11 and protruding from the through hole 28 in the back wall of the recess 1 ;
0 and the case 1, and a spring 21 is installed between the lock lever 10 and the case 1 to rotationally bias the lock lever 10 in the direction of separating from the receiving part 14,
4, the biasing force of the spring 21 causes the front side slope part 25 of the proximal end of the lock lever 10 to come into contact with the rear side slope part 24 of the distal end of the actuating rod 6, and the actuating rod The side surface of 6 is connected to the axis 11 of the through hole 28.
It is brought into contact with the side edge 28a.

(Embodiment) In the illustrated embodiment, an operation plate 3 having a length that fills almost the entire surface of the front opening 2 is accommodated in the recess 1a of the case 1, and the operation plate 3 has a vertical pivot 5 at a portion near the left end. It is pivotally attached to the upper and lower walls of the recess 1a. The operating rod 6 is shaped integrally with the operating plate 3,
The pivot 5 is connected to the upper and lower walls 4 on the back side of the operating plate and the operating rod 6.
The bearing wall portion 27 is inserted into each through hole of the bearing wall portion 27 which is connected to the bearing wall portion 27 .

A rear substrate 13 is fixed to the rear wall of the recess 1a, and a through hole 29 is formed in the rear substrate 13 and communicates with the through hole 28 of the recess 1a. It protrudes from the back. The bearing plate portion 12 is provided to protrude from the back side of the back board 13. Note that the bearing plate portion 12 can also be molded integrally with the recessed portion 1a.

A bearing leg 15 is protruded from the front side of the proximal end of the lock lever 10, and a vertical pivot 11 is inserted through the bearing leg 15 and the bearing plate 12. The biasing spring is constituted by a coiled spring, one end 21a of which abuts against the bottom surface of the front side groove 30 of the lock lever 10, and the other end 21b abuts against the rear substrate 13 and the right side of the recess 1a. The spring 21 urges the lock lever 10 to rotate counterclockwise in FIG. The main portion of the spring 21 is fitted onto the pivot 11 and is disposed within a window hole 22 at the proximal end of the lock lever 10.

When the recess 1a of the case 1 is inserted into the mounting hole of the door 23, the seal plate 20 is inserted between the outer periphery flange 1d of the case 1 and the front of the door 23, and the seal plate 20 is inserted into the rear of the door so as to straddle the recess 1a. Upper and lower bent ends 19a, 1
The mounting back plate 19 against which the seal plate 9b is abutted compresses the seal plate 20 appropriately by tightening the mounting screws 9 and 18 inserted through its through holes. Two rear projections 1c are protruded on each side between the square ring-shaped seal plate 20 and the side wall of the recess 1a.

The head of a bolt 7 is embedded and fixed in the rear wall of the recess 1a when the case 1 is molded. The first half of the central screw hole of the spacer tube 8 is screwed into the planting bolt 7, and the mounting screw 9 is screwed into the second half of the central screw hole. Similarly, recess 1
The front half of the central threaded hole of the spacer tube 17 is screwed into another bolt 16 whose head is buried and fixed in the rear wall of the spacer a, and the rear half of the central threaded hole is screwed into another bolt 16 whose head is embedded and fixed in the rear wall of The other mounting screw 18 is screwed in.

These installation bolts 7, 16 and spacer tubes 8, 1
7 and mounting screws 9 and 18 are used to fix the rear substrate 13 to the rear wall of the recess 1a, and the front end of each spacer tube is fitted into the rear receiving hole of the rear substrate 13. . Each rear end of the spacer tubes 8, 17 has hexagonal nut portions 8a, 1 for rotational operation.
7a is provided.

The receiving part 14 provided on the fixed frame 31 of the switchboard storage box main body, etc., has a front wall part 14a and a rear wall part 14b that engage with and disengage from the tip of the lock lever 10. The protruding length is the rear wall portion 14b.
is set longer.

(Function) In this planar locking device, when the door 23 is rotated to close, the tip of the lock lever 10 in an inclined state comes into contact with the rear wall 14b of the receiving portion 14 at the end of the rotation, so that it is pressed against the rear wall 14b. The lock lever 10 is rotated about the pivot shaft 11 against the bias of the spring 21. During this rotational movement of the lock lever 10 in the locking direction, the distal end surface 26 of the proximal end of the lock lever 10 slides along the side surface of the actuating rod 6.

When the door 23 is fully closed, the front inclined surface 25 at the base end of the lock lever 10 comes into contact with the rear inclined surface 24 at the distal end of the actuating rod 6, and the distal end of the lock lever 10 enters the receiving section 14. It engages with the front wall portion 14a. As a result, the door 23 is locked to the fixed frame 31. The locked state of the door 23 is determined by the rotational bias of the spring 21 between the front inclined surface 25 of the lock lever 10 and the rear inclined surface 24 of the actuating rod 6.
It is held accurately by maintaining the state of contact with.

To unlock the door 23 and open the door 23,
The operation plate 3 may be pushed into the recess 1a and rotated about the pivot 5. Due to this pushing rotation, the operation plate 3
Since the operating rod 6 rotates in a direction away from the pivot 11, the contact between the front inclined surface 25 at the base end of the lock lever 10 and the rear inclined surface 24 at the distal end of the operating rod 6 is released.

Therefore, the lock lever 10 rotates under the bias of the spring 21, and the tip of the lock lever 10 separates from the receiving portion 14. When the lock lever 10 rotates, the tip of the lock lever 10 pushes against the rear wall 14b of the receiving part 14, and the door 23 is automatically driven in the opening direction by the reaction.

The door 23, which has been partially opened in this manner, is fully opened by placing a finger on the open end. When the door is in the unlocked state, the distal end surface 26 of the base end of the lock lever 10 is biased by the spring 21.
is held in contact with the side surface of the actuating rod 6, so the operating plate 3 is held in the push-in position, and the lock lever 10 is held in a standby position inclined toward the back side of the recess 1a.

(Effects of the invention) As described above, in the planar lock device of the invention, the lock lever 10 is pivotally attached to the back wall of the recess 1a of the case 1 by the pivot 11 parallel to the front of the case.
An operating plate 3 having an operating rod 6 protruding from the back is pivotally attached to the recess 1a by a pivot 5 parallel to the front of the case,
Front slope portion 25 at the base end of the lock lever 10
When the tip of the lock lever 10 comes into contact with the rear slope portion 24 of the tip of the actuating rod 6, the tip of the lock lever 10 touches the receiving portion 14.
When the operating plate 3 is pushed in and rotated, the tip of the lock lever 10 detaches diagonally backward from the receiving part 14 and rotates, locking the door 23. When the lock lever 10 is in the unlocked position, the distal end surface 26 of the proximal end of the lock lever 10 comes into contact with the side surface of the operating rod 6, so that the operation plate 3 is released.
Since the door 23 is held in the push-rotation position, the door 23
It can be confirmed from the front side of the door that the door 23 is unlocked, and it is possible to prevent accidents such as electric shock caused by forgetting to lock the door 23.

Also, when the operation plate 3 is pushed in and rotated, the spring 2
Since the tip of the lock lever 10 rotated by the bias of the lock lever 10 presses the receiving part 14, the door 23 is automatically partially opened, and it is difficult to place a finger on the open end of the door. Therefore, the door 23 can be fully opened. Therefore, if the flat lock device of the present invention is installed, the door can be locked and opened accurately without the need for any other handle or handle device, and the cost of installing handles and handles can be saved.

[Brief explanation of drawings]

The drawings show a push-rotation type planar locking device according to an embodiment of the present invention, FIG. 1 is a front view of the planar locking device in a locked state, and FIG. 2 is a rear view of the same planar locking device. 3 is a right side view of the same plane locking device. FIG. 4 is a left side view of the flush locking device, FIG. 5 is a plan view of the flush locking device, and FIG. 6 is a bottom view of the flush locking device. 7 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 8 is a cross-sectional view taken along line B-B in FIG. 3, and FIG. 9 is a cross-sectional view taken along line C-C in FIG. .
FIG. 10 is a sectional view corresponding to FIG. 9 when the handle body is pushed in. 1...Case, 1a...Rear side recess, 1b...
Cylindrical part, 1d...outer periphery flange part, 2...front side space,
3... Operation panel, 4... Upper and lower walls of the operation panel, 5...
Axis, 6... Operating rod, 7... Planting bolt, 8...
Spacer tube, 9...Mounting screw, 10...Lock lever, 11...Pivot, 12...Bearing plate portion, 13
... Back board, 14 ... Receiving part, 15 ... Bearing leg part, 16 ... Planting bolt, 17 ... Spacer tube,
18...Mounting screw, 19...Mounting back plate, 20
... Seal plate, 21 ... Biasing spring, 22 ... Window hole, 23 ... Door, 24 ... Fixed frame body, 24 ... Rear side slope of operating rod tip, 25 ... Lock lever base end 26...Top surface of the proximal end of the lock lever, 27...Bearing wall, 28...Through hole, 28a...Hole wall, 29...Through hole, 30...
Groove portion, 31...Fixed frame body.

Claims (1)

[Scope of utility model registration request] A case 1 has a recessed portion 1a on the back side of the door 23, and a bearing plate portion 12 is provided protruding from the rear wall of the recessed portion 1a; a lock lever 10 whose base end is pivotally attached to the lock lever 10 and whose distal end engages and disengages from the receiving part 14 on the fixed frame 31 side; the lock lever 10 is rotatably housed by being pushed into the front opening 2 of the recess 1a, and is parallel to the front surface of the case 1; na axis 5
An operation plate 3 pivotally attached to the side wall of the recess 1a by
an actuating rod 6 protruding from the rear portion of the operation plate main body 3 located between the pivot 5 and the pivot 11 and protruding from the through hole 28 in the rear wall of the recess 1a; The lock lever 10 is equipped with a spring 21 that rotationally biases the lock lever 10 in the direction of detaching from the receiving portion 14. When the lock lever 11 engages with the receiving portion 14, the biasing force of the spring 21 causes the lock lever 10 to rotate. Front side slope part 2 of base end
5 is brought into contact with the rear sloped surface 24 of the tip of the actuating rod 6, and the side surface of the actuating rod 6 is brought into contact with the edge 28a of the through hole 28 on the side of the pivot 11. .