JP4140974B2 - Lock handle device for door - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock handle device that is used in a switchboard, a vending machine, etc., and in a locked state in a normal state, a handle is housed in a fixed case, It is.

In a conventional door lock handle device, a locking shaft is fitted into a shaft cylinder portion in the front-rear direction of a fixed case, a base end portion of the handle is connected to a front end portion of the locking shaft by a transverse pivot shaft, and a rear end of the locking shaft. A stopper plate is fixed to an end portion, and the handle is inserted into the fixed case in a retracted position and a protruding position by a resilient action of a posture holding leaf spring that is press-fitted between the locking shaft and the handle. These two stable states are set alternately, a spring receiving groove is provided on the back side of the base end of the handle, and a spring receiving hole is formed deep in the longitudinal direction of the locking shaft on the front surface of the locking shaft. The base end of the leaf spring is abutted against and supported by the groove bottom of the spring receiving groove, while the tip is abutted and supported against the bottom of the spring receiving hole to elastically extend the entire length from the base end to the tip of the leaf spring. The handle works effectively in the firing action, and the handle The base end of the leaf spring is on the base end side of the handle with respect to a reference straight line that connects the tip of the leaf spring and the center of the transverse pivot, while At the time of start-up, the base end of the leaf spring is disposed so as to cross the reference straight line toward the front end side of the handle (see Patent Document 1).

This door lock handle device has a simplified shape structure of the handle posture holding urging mechanism in comparison with the previous door handle device, and can reduce the manufacturing and processing costs of the entire device, This is designed to increase the rotational urging force of the handle.

However, in this improved door lock handle device, the spring receiving hole of the front surface portion of the locking shaft is formed long along the center line of the locking shaft, and the fixing plate fixing screw Since the lock shaft is arranged in line with the hole, there is a certain limitation in shortening the length of the lock shaft, and therefore there is a limit to making the door lock handle device thinner.

Japanese Patent No. 3286625

An object of the present invention is to reduce the thickness of a lock handle device for a door by making it possible to shorten the length of the locking shaft.

The main feature of the present invention is that the locking shaft 3 is fitted and inserted into the longitudinal cylindrical portion 2 of the fixed case 1, and the proximal end portion of the handle 4 is connected to the front end portion of the locking shaft 3 by the transverse pivot shaft 5. A fixing screw hole 6 is formed on the center line of the locking shaft 3 from the back side, and a stopper plate 8 is fixed to the rear end portion of the locking shaft 3 by a bolt 7 screwed into the fixing screw hole 6. A handle posture holding mechanism is provided between the locking shaft 3 and the handle 4 to urge the handle 4 so as to alternately take two stable states of an immersion position and a protruding position with respect to the fixed case 1. In the door lock handle device,
The handle posture holding mechanism is formed on the front surface side of the back wall portion 9 of the fixed case 1 on the front-rear direction center line of the transverse pivot 5, and is positioned vertically with the fixing screw hole 6 of the clasp plate 8. A spring receiving recess 10 which is offset and arranged in an offset shape;
A seat receiving recess 12 formed coaxially with the spring receiving recess 10 at the front end of the spring receiving recess 10;
A compression coil spring 11 housed in the spring receiving recess 10 and elastically deformed along a longitudinal center line of the transverse pivot shaft 5;
An intermediate seat 13 which is accommodated in the seat receiving recess 12 and is movable along the longitudinal center line of the transverse pivot 5, and the front end of the compression coil spring 11 abuts on the back;
An input protrusion 14 formed on the rear surface of the proximal end portion of the handle 4 and deviated to the proximal end side with respect to the center line in the front-rear direction of the transverse pivot 5 and abutting against the front surface of the intermediate seat 13 The input projecting portion 14 is formed to have a semicircular cross section and is raised from the rear surface of the proximal end portion of the handle 4.
When the handle 4 is in the immersive position in the fixed case 1, a gap corresponding to the raised height of the input projecting portion 14 is left between the rear surface of the proximal end portion of the handle 4 and the front surface of the intermediate seat 13. It is.

In the present invention, the spring receiving recess 10 in which the compression coil spring 11 which is a main part of the handle posture holding mechanism is accommodated is formed on the front side of the back wall 9 of the fixed case 1 on the longitudinal center line of the transverse pivot 5. The fixing plate hole 8 of the clasp plate 8 is offset from the fixing screw hole 6 so as to be offset , and the seat receiving recess 12 is provided at the front end of the spring receiving recess 10 at the spring receiving recess 10. The intermediate seat 13 is accommodated in the seat receiving recess 12 in a state sandwiched between the input projection 14 having a semicircular cross section and the compression coil spring 11 on the rear surface of the base end of the handle 4. In the conventional door handle device, the length of the locking shaft 3 is further shortened as compared with the case where the spring receiving hole and the fixing screw hole of the clasp plate are arranged in a straight line. Is possible , And the because the shortening of the locking shaft 3 allows savings in the thickness of the fixed case 1 for housing it, and thin the entire door locking handle assembly.

This door lock handle device is attached to a door 27 of an electric machine storage box or the like. As shown in FIG. 2, in the locked state where the handle 4 is immersed in the fixed case 1, the stopper plate 8 is The door 27 is locked to the box body so that it cannot be opened by engaging with a strike provided on the box body side.

In this locked state, the input protrusion 14 formed on the back surface of the handle 4 is in contact with the front surface of the intermediate seat 13 at a position above the center line in the front-rear direction of the transverse pivot 5. The rotational moment due to the elastic restoring force 11 acts as an urging force for rotating the handle 4 in the clockwise direction in FIG. 2 about the transverse pivot 5. Therefore, the handle 4 is held in a state of being immersed in the fixed case 1.

When the operator pushes the front surface of the base end portion of the handle 4 with a finger at a position above the front-rear direction center line of the transverse pivot 5, the handle 4 overcomes the clockwise urging force, and the transverse Starts rotating counterclockwise about pivot 5. During this rotation, the moment of rotation of the spring 11 due to the elastic restoring force is reversed at the moment when the contact point between the input protrusion 14 and the intermediate seat 13 crosses the center line in the front-rear direction of the transverse pivot 5 downward. To do.

Thus, the handle 4 is rotated counterclockwise in FIG. 2 about the transverse pivot 5 until the proximal end back surface portion 28 of the handle 4 abuts the front slope portion 29 of the back wall portion 9 of the fixed case 1. , Jump out and rotate. In this projecting position, the main part of the handle is gripped by the operator, the locking shaft 3 is rotated, the clasp plate 8 is released from the strike on the box body side, and the door 27 is unlocked. The unlocked door 27 is opened by pulling the handle 4 forward.

In the illustrated embodiment, the locking shaft 3 is composed of a large diameter portion 3a and a small diameter portion 3b.
In the annular groove 15 formed on the outer peripheral surface of the rear end portion a, a ring-shaped seal member 16 that contacts the inner peripheral surface of the shaft tube portion 2 is accommodated. A ring-shaped seal member 19 that is in contact with the inner peripheral surface of the rear end opening 18 of the shaft tube portion 2 is fitted to the outer peripheral surface of the root portion of the small diameter portion 3b. A rear end angular shaft portion 35 of the small-diameter portion 3b of the locking shaft 3 is fitted in a rectangular recess 20 formed on the front surface of the thick plate-shaped clasp plate 8 so as not to be relatively rotatable.

The fixing screw hole 6 of the clasp plate 8 is disposed on the center line of the locking shaft 3, and the longitudinal center line of the transverse pivot 5, which is the reference line for forming the spring receiving recess 10, is used for the fixing. The screw holes 6 are arranged in an offset shape shifted downward from the screw holes 6. A finger pressing recess 21 formed in front of the base end portion of the handle 4 is disposed on the upper side of the transverse pivot 5, and a main portion of the handle 4 held by an operator extends below the transverse pivot 5. ing.

At the lower part of the main part of the handle 4, a lock housing cylinder part 22 projects to the back side. A lock cylinder 23 containing a known pin tumbler lock mechanism is housed in the lock housing cylinder portion 22, and in a locked state where the handle 4 is immersed in the fixed case 1,
By inserting a key having a corresponding key code into the key hole 24 of the lock cylinder 23 and turning the lock cylinder 23, the handle 4 is locked against the fixed case 1 so as not to pop out. This locked state is performed when a stop tumbler 25 fixed to the rear end portion of the lock cylinder 23 is engaged with a lock receiving portion 26 on the inner wall surface of the fixed case 1.

In the illustrated embodiment, a fixing screw hole 31 of an adapter 30 for attaching the fixing case is formed in the front-rear direction at the center of the back wall portion 9 of the fixing case 1. The fixed body 1 is inserted into the mounting opening 32 of the door 27 from the front side, and the adapter 30 is placed on the back wall 9 of the fixed case 1 from the back side of the door 27. The bolt 34 inserted from 33 is screwed into the fixing screw hole 31. By tightening the bolt 34, the adapter 30 is pressed against the back surface of the door 27, the outer peripheral flange of the fixed body 1 is pressed against the front surface of the door 27, and the fixed case 1 is attached to the door 27.

It is a front view of the lock state of the lock handle device for doors concerning one example of the present invention. It is the sectional view on the AA line of FIG. It is a rear view of the handle | steering-wheel integrated in the lock handle apparatus for doors of FIG. FIG. 4 is a left side view showing a part of the handle of FIG. 3 in a longitudinal section. FIG. 4 is a front view of the handle of FIG. 3. FIG. 6 is a sectional view taken along line B-B in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed case 2 Shaft cylinder part 3 of a fixed case Locking shaft 3a Large diameter part 3b of a locking shaft Small diameter part of a locking shaft
4 Handle 5 Transverse pivot 6 Fixing screw hole 7 Bolt 8 Clasp plate 9 Back wall portion 10 of the fixing case Spring receiving recess 11 Compression coil spring 12 Seat receiving recess 13 Intermediary seat 14 Input protrusion 15 of the handle Large locking shaft Diameter annular groove 16 Seal member 18 Rear end opening 19 of shaft tube portion Seal member 20 Square concave portion 21 of clasp plate Handle finger push portion 22 Handle lock receiving tube portion 23 Lock cylinder 24 Key hole 25 Stop tumbler 26 Lock receiving portion 27 of the fixed case Door 28 Rear end portion 29 of the proximal end of the handle 30 Front inclined surface portion of the rear wall portion of the fixed case 30 Adapter for mounting 31 Screw hole for fixing the adapter 32 Door for mounting the door 33 Through hole 34 of the adapter Fixing bolt 35 Rear end corner shaft of locking shaft

Claims (1)

A locking shaft 3 is fitted and inserted into the axial tube portion 2 in the front-rear direction of the fixed case 1, and a base end portion of the handle 4 is connected to a front end portion of the locking shaft 3 by a transverse pivot shaft 5. A fixing screw hole 6 is formed from the back side, and a stopper plate 8 is fixed to a rear end portion of the locking shaft 3 by a bolt 7 screwed into the fixing screw hole 6. In the door lock handle device, a handle posture holding mechanism is provided between the handles 4 to urge the handle 4 so as to alternately take two stable states of an immersion position and a protruding position with respect to the fixed case 1. ,
The handle posture holding mechanism is formed on the front surface side of the back wall portion 9 of the fixed case 1 on the front-rear direction center line of the transverse pivot 5, and is positioned vertically with the fixing screw hole 6 of the clasp plate 8. A spring receiving recess 10 which is offset and arranged in an offset shape;
A seat receiving recess 12 formed coaxially with the spring receiving recess 10 at the front end of the spring receiving recess 10;
A compression coil spring 11 housed in the spring receiving recess 10 and elastically deformed along a longitudinal center line of the transverse pivot shaft 5;
An intermediate seat 13 which is accommodated in the seat receiving recess 12 and is movable along the longitudinal center line of the transverse pivot 5, and the front end of the compression coil spring 11 abuts on the back;
An input protrusion 14 formed on the rear surface of the proximal end portion of the handle 4 and deviated to the proximal end side with respect to the center line in the front-rear direction of the transverse pivot 5 and abutting against the front surface of the intermediate seat 13 The input projecting portion 14 is formed to have a semicircular cross section and is raised from the rear surface of the proximal end portion of the handle 4.
When the handle 4 is in the immersive position in the fixed case 1, a gap corresponding to the raised height of the input projecting portion 14 is left between the rear surface of the proximal end portion of the handle 4 and the front surface of the intermediate seat 13. A door lock handle device.

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