JPH09151636A - Door lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of an electric device having an emergency unlocking device. SOLUTION: A latch 60 engaged and disengaged with and from an engaging rod of the back of a door at a locking angle and at an unlocking angle, a locking lever 55 energized in the direction of engaging with the latch 60 of the locking angle, and a driving lever 49 for pushing the locking lever 55 in the opposite direction to the energizing direction when a solenoid 32 is operated according to an unlocking signal are disposed in a case. A cam 19 is fixed to a rotor 13 of a cylinder lock 11 having a keyway 14 opened in the front of the case, and a lock plate 72 which is engaged with the cam 19 and rotatably provided on a sliding wall 68 of the case is provided with an opening part 84 for pushing a pushed projection 54 of the driving lever 49 when the cylinder lock 11 is unlocked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device having a simplified and compact structure of a locking device for electrically and mechanically locking and unlocking a door.

[0002]

2. Description of the Related Art FIG. 11 is a front view showing an example of a rocker device. In a rocker body C of the rocker device, a plurality of storage chambers (two rows in FIG. 11) arranged in the left-right direction are vertically arranged in a plurality of stages ( (4 stages in FIG. 11) are provided. The left end of the door D is pivotally attached to each storage room by a hinge, and each door D is attached to the rocker body C.
A door locking device A for locking and unlocking the right end of the door D is fitted in a recess provided on the right side of the door.

The rocker device is a mechanical door locking device that allows the user to lock and unlock the door when a user inserts a predetermined coin, and locks and unlocks the door by entering a personal identification number. It can be roughly classified into two types of electric door locking devices that are enabled. It is necessary for the electric door locking device to be provided with a mechanical emergency unlocking mechanism in case of power failure or failure of the electric system.

[0004]

When a mechanical emergency unlocking mechanism is provided, a mechanical unlocking mechanism is added to the electrical locking / unlocking mechanism, so that the entire door locking device is provided. The structure is complicated and the size is larger than that of the mechanical door locking device, but it is necessary to reduce the size for the following reasons. (1) In order to make the storage room of the rocker device as large as possible and improve the storage efficiency, it is necessary to make the door lock device A as small as possible.

(2) Since the main dimensions of the rocker device are standardized, the mechanical door locking device and the electric door locking device with an emergency unlocking mechanism are made to have the same size, and any locking device Need to be able to attach. for that purpose,
The electric door locking device with a conventional emergency unlocking mechanism, which is larger than the mechanical door locking device, must be miniaturized.
In particular, it is strongly desired when replacing a mechanical door locking device with an electric door locking device having an emergency unlocking mechanism.
The present invention aims to solve such problems,
The structure of an electric door locking device with an emergency unlocking mechanism is simplified and downsized to the same size as a mechanical door locking device.

[0006]

In order to achieve the above object, the door locking device of the present invention is an engagement device pivotally mounted in the case of the locking device and fixed to the back surface of the door at the locking and unlocking angles. A latch that engages and disengages with the rod; a locking lever that is pivotally mounted in the case and is urged in a direction to engage with the latch at a locking angle; a solenoid that operates in response to a locking and unlocking signal from the control unit; A drive lever that has a driven projection and a drive projection that are pivotally attached to the case and project from the outer surface, and that the drive projection pushes the locking lever in the opposite direction by the operation of the solenoid in the unlocking direction; A keyhole is opened on the front face of the cylinder and a cam is fixed to the rotor, and a rotation of the pushed projection when the rotor is at the locking angle and pivotally attached to the case and engages with the cam. Allows the above rotor to unlock A lock plate having an opening for pushing the pushed projection when moved, and the drive lever pushed by the pushed projection in the opening biases the locking lever in the opposite direction. It is configured to push.

An unlocking confirmation sensor for detecting that the locking lever has rotated in the opposite direction to the bias in the case,
It is preferable to provide a lock confirmation sensor for detecting the rotation of the lock angle of the latch. If the engaging rod is composed of a fixing plate screwed to the back surface of the door and a rod portion fixed to the fixing plate and detachable from the latch, it is convenient for attachment and replacement.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A specific example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a door locking device A ₁
2 is a front view of the door locking device A ₁ , FIG. 3 is a view taken in the X direction of FIG. 2, FIG. 4 is a view taken in the Y direction of FIG. 2, and FIG. 5 is a view of the door locking device A ₁ . It is a perspective view. The case of the door lock device A ₁ is
Outer case 1 and front cover 2 fixed to the outer case 1
And a support plate 3 attached to the inner wall surface of the outer case 1.
And an inner case 4 attached to the support plate 3 (see FIG. 1).

The outer case 1 is bent into a U-shape from a plate material, and a short side wall 1b is provided at one end of the front wall 1a and a long side wall 1c is provided at the other end. The front cover 2 is bent into a U shape from a plate material, and the inner surface of the front cover 2 is fixed to the front portion of the outer case 1. The front cover 2 and the outer case 1 are provided with a display window 5 opening to the front and a circular hole 6, and a long hole 7 connecting from the front to the side (see FIGS. 1 and 2).

Behind the display window 5, supporting pieces 9a, 9b are bent at a right angle from the side walls 1b, 1c of the outer case 1 toward the inside and support a base plate 8a (see FIG. 2) of the display lamp 8.
The support piece 10 formed in a U-shape is attached to the rear surface of the front wall 1a behind the circular hole 6, and the front surface of the cylinder lock 11 inserted into the hole provided in the support piece 10. Is exposed from the circular hole 6 (see FIGS. 1 and 3).

The cylinder lock 11 has a key hole 14 opened on the front surface of a rotor 13 inserted in the case 12 (see FIG. 2), and a flange portion 15 provided on the outer peripheral surface of the case 12 around the front portion. And a male screw 16 provided on the rear side of the collar portion 15, and the large nut 17 screwed to the male screw 16 and the collar portion 15 sandwich the supporting piece 10, thereby the cylinder lock 1
1 is fixed to the support piece 10 (see FIG. 3).

The rear portion of the rotor 13 is formed on a non-circular shaft 18, a male screw is provided on the non-circular shaft 18, and a cam 19 having a hole of the same shape as the non-circular shaft 18 and a toothed washer 20 are mounted on the non-circular shaft 18. After being inserted, a small nut 21 is attached to the non-circular shaft 18.
Is screwed to fix the cam 19 to the rotor 13. Cam 1
Reference numeral 5 is provided with a case fixing projection 22 which projects from the outer peripheral surface and bends in the direction of the front wall 1a, and an engagement projection 23 which projects from the outer peripheral surface (see FIGS. 1 and 3).

The support plate 3 is provided with a screw hole 25 in an arm portion 24 protruding vertically, and a tip of a screw 27 inserted into a hole 26 provided in the side wall 1c is screwed into the screw hole 25, so that the support plate 3 is supported. 3 is attached to the side wall 1c (see FIGS. 1 and 3), and a recess 28 is provided at a position overlapping the long hole 7. Holes 29 and 30 are provided in the support plate 3, arcuate holes 31 centered on the upper hole 29 are provided, and a lock / unlock signal from a control unit (not shown) is provided on the surface of the support plate 3. The latching solenoid 32 on which the plunger 33 operates is fixed (see FIG. 2).

An inner case 4 attached to the support plate 3
Is the contact surface 3 with which the support plate 3 contacts the back surface side in FIG.
4 and projections 35 projecting above and below the contact surface 34, the upper and lower ends of the support plate 3 contacting the contact surface 34 are positioned by the projection 35. A housing recess 36 for housing a drive lever 49, a locking lever 55, and a latch 60, which will be described later, is formed on the contact surface 34, and a recess 37 is formed on a side surface of the inner case 4 at a position overlapping the elongated hole 7. (Fig. 1
reference).

The inner case 4 has holes 29, 3 in the support plate 3.
The screw holes 38, 39 are provided at positions opposite to 0, and the screw holes 38, 39 have circular recesses 3 on the back surface of the inner case 4.
8a and 39a are provided. A square hole 40 penetrating from the surface of the inner case 4 to the housing recess 36 is provided, and an unlocking confirmation sensor 41 is attached in the vicinity of the square hole 40 (see FIG. 1). It is attached (see FIG. 9).

A circular recess 38a on the back surface of the inner case 4
, One end of the cylindrical support shaft 43 is inserted, the small diameter portion formed at the other end of the support shaft 43 is fitted into the hole 29 of the support plate 3, and is inserted into the support shaft 43 from the back side of the support plate 3. The screw 44 is screwed into the screw hole 38. The cylindrical support shaft 45 is provided in the circular recess 39a.
One end of the support shaft 45 is inserted into the hole 30 of the support plate 3 and the screw 46 inserted into the support shaft 45 from the back side of the support plate 3 is screwed into the screw hole 38. (See FIGS. 1 and 7).

Plunger 3 of latching solenoid 32
A slit 47 is provided at the tip of 3, and a pin 48 penetrating the slit 47 is provided (see FIG. 1). Slit 4
The hole 50 is provided in the drive lever 49 inserted into the shaft 7, and the support shaft 45 is inserted into the hole 50, the spacer 51, and the washer 67 (see FIGS. 1 and 7). A long groove 52 into which the pin 48 is inserted is provided on the right side of the hole 50, and a drive projection 53 projecting from the outer peripheral surface and a driven projection 54 projecting from the side surface of the drive lever 49 are provided on the left side of the hole 50. (See Figure 1).

The locking lever 55, the lower end of which is pivotally attached to the support shaft 45, has a driven wall 56 which stands up from the left side surface and a projection 57 which bends from the upper end and stands up. Projecting from a hole 85 penetrating (see FIG. 6). The protrusion 57 protrudes from the surface of the inner case 4 via the square hole 40, and when the locking lever 55 rotates, the protrusion 57 contacts and separates from the detection lever of the unlocking confirmation sensor 41. One end 58a of the spring 58 wound around the support shaft 45 is locked to the right side surface of the locking lever 55, and the other end 58b of the spring 58 is locked to a small hole 59 provided in the drive lever 49 ( (See FIG. 9).
Therefore, the locking lever 55 is biased counterclockwise in FIG.

The latch 60 has a hole 6 inserted into the support shaft 43.
1, an engagement groove 62 that opens to the outer peripheral surface, and an engagement step portion 63 that engages and disengages with the upper surface of the driven wall 56 on the outer peripheral surface. One end 65a of the spring 65 is inserted into the small hole 64 provided in the latch 60.
, And the other end 65b of the spring 65 is locked in the small hole 66 provided in the support plate 3 (see FIG. 9). Therefore, the latch 6
0 is biased to the locked position (see FIG. 9) where the engagement groove 62 is closed and the unlocked position (see FIG. 10) where the engagement groove 62 opens into the recess 28.

At the lower end of the side wall 1c, there is provided a sliding wall 68 which is bent at a right angle from the side wall 1c and whose tip portion is bent further inward at a right angle, and two screw holes 69 are formed in the sliding wall 68.
Small holes 71 are provided between 70. A hole 73 overlapping the screw hole 69, an arc hole 74 overlapping the small hole 71, and an arc hole 75 overlapping the screw hole 70 are provided at one end of the lock plate 72 that abuts the upper surface of the sliding wall 68 (FIG. 1).

The lower end of the tubular spacing piece 76 is inserted into the hole 73 of the lock plate 72, and the tip of the screw 78 inserted through the tubular spacing piece 76 and the washer 77 is screwed into the screw hole 69. One end 79a of the spring 79 wound around the tubular spacing piece 76 is locked in the small hole 80 of the lock plate 72, and the other end 79b passes through the arcuate hole 74 and is locked in the small hole 71 ( (See FIGS. 1 and 3).

A screw 82 inserted through the washer 81 and the arcuate hole 75 is screwed into the screw hole 70 of the sliding wall 68. Therefore, the lock plate 72 can rotate about the spacing piece 76 as a fulcrum, and is biased clockwise in FIG. The lock plate 72 is provided with a long groove 83 into which the engagement projection 23 of the cam 19 is fitted, and an opening 84 into which the pushed projection 54 of the drive lever 49 is inserted. The opening 84 has a size that allows the pushed protrusion 54 to rotate when the lock plate 72 is in the position rotated in the counterclockwise direction shown in FIG. 3.

Engaging rod R attached to the back surface of door D
Has a standing wall 86a at one end thereof and a fixed plate 86, and both end surfaces of which are bent from a locking material to have the standing wall 86a and the fixing plate 86.
The fixing plate 86 is provided with two holes 88 (see FIG. 8). The handle 89 attached to the surface of the door D is provided with a fixed surface 89a that comes into contact with the surface of the door D and two leg portions 89b, and a screw hole is provided in the tip end surface of the leg portion 89b.

Then, from the back side of the door D, the hole 8 of the fixing plate 86 is formed.
The screw 90 inserted through the screw 8 penetrates through the door D and is screwed into the screw hole of the leg portion 89b of the handle 89, so that the handle 89 and the engaging rod R
Are fixed to the front and back surfaces of the door D. Reference numeral 9 shown in FIG.
1 is an indicator lamp 8, sensors 41, 42, solenoid 3
It is a wire harness connected to 2.

FIG. 11 is a front view of the door lock device A ₁ attached to the refrigerating rocker device, and a glass is provided at the center of the door D of the refrigerating rocker device so that articles to be stored can be seen through from the outside. A window W is provided, a handle 89 is fixed to the right end of the front surface of the door D, and an engagement rod R is fixed to the rear surface of the door D. Next, the operation of the door lock device A ₁ is performed in the locked state,
The electrical unlocking operation and the emergency unlocking operation will be described in this order with reference to FIGS. 2, 3, 9 and 10.

In a normal state where the emergency unlocking is not performed, the rotor 13 of the cylinder lock 11 is in a locked state in which it is rotated clockwise in FIG. 2, and the case fixing projection 22 of the cam 19 projects from the lower end of the front cover 2. Engaging with the back surface of the casing of the rocker device (see FIG. 2), and the engaging projection 2 of the cam 19
The lock plate 72 that engages 3 is in the locked position rotated counterclockwise, as shown in FIG.

When the door locking device A ₁ is in the locked state, the plunger 33 of the solenoid 32 is at the moving end in the retracted direction, and the drive lever 49 that engages with the plunger 33.
Rotates the handle clockwise with the support shaft 45 as a fulcrum,
The pushed protrusion 54 is located below the opening 84 of the lock plate 72 (see FIG. 9). The protrusion 57 of the locking lever 55 is separated from the unlocking confirmation sensor 41, and the upper end of the driven wall 56 is engaged with the engagement step portion 63 of the latch 60.

The latch 60 is at the locking angle shown in FIG.
Since the engagement rod R is constrained by the engagement groove of the latch 60 and cannot move to the left, which is the door opening direction, the rocker door D cannot be opened. The lock confirmation sensor 42 pushes the detection lever by the latch 60, and the control unit (not shown) that centrally controls each rocker stores that the lock is being performed.
When the display lamp 8 is turned on, it indicates that the vehicle is locked outside.

To unlock the door locking device A ₁ by the rocker user, the locker number and the personal identification number are input, and the solenoid 32 is actuated by the unlocking signal issued from the control unit, and the plunger 33 is projected. Therefore, the drive lever 49 rotates clockwise about the support shaft 45 as a fulcrum (see FIG. 10). The protrusion 57 of the drive lever 49 pushes the detection lever of the unlock confirmation sensor 41, and an unlock signal is issued to the control unit.

The pushed projection 54 of the drive lever 49 moves upward in the opening 84 (see FIG. 10). Drive lever 4
The locking lever 55 pushed by the drive protrusion 53 of the drive lever 9 rotates in the same direction, and the engagement between the driven wall 56 of the drive lever 49 and the engagement step portion 63 of the latch 60 is released. Become mobile. Therefore, when the door D is opened, the engagement rod R moves to the left, the latch 60 has the unlocking angle shown in FIG. 10, and is separated from the detection lever of the locking confirmation sensor 42, and the unlocking confirmation signal is sent to the control unit. Is emitted.

When the door D is opened and then closed, the engagement rod R moves to the right and pushes the engagement groove 62 of the latch 60, so that the latch 60 has the locking angle shown in FIG. 9 and the locking confirmation sensor 42. Push the detection lever of and latch 6
The engagement stepped portion 63 of 0 engages with the locking lever 55 and returns to the locked state.

When the lock cannot be unlocked due to a power failure or some failure of the electric system, the key possessed by the administrator is inserted into the key hole 14 to perform the emergency unlock. When the key is rotated about 90 degrees in the unlocking direction (counterclockwise in Fig. 2), the cam 1
The engaging projection 23 of 9 pushes the elongated hole 83 of the lock plate 72 upward, the lock plate 72 rotates clockwise in FIG. 3 with the screw 78 as a fulcrum, and the lower end of the opening 84 is the pushed projection. 54 is pushed upward.

The drive lever 49 pushed upward by the pushed projection 54 rotates clockwise, and the locking lever 55 pushed by the drive projection 53 of the drive lever 49 rotates in the same direction, as shown in FIG. Similarly, the engagement between the latch 60 and the locking lever 55 is released, the latch 60 becomes rotatable, and the emergency unlock is performed. After emergency unlocking with cylinder lock 11, cylinder lock 11
Return to the locked state.

As described above, the emergency unlocking mechanism has the front wall.
Cylinder lock 11 fixed to the back side of 1a and cylinder lock 1
The cam 19 to be attached to the first case 1 and the sliding wall 6 of the outer case 1
8, which is pivotally attached to the cam 8 and engages with the engaging projection 23 of the cam 19.
83 and the driven projection 54 of the drive lever 49 are opened.
By the three parts with the lock plate 72 having the mouth portion 84,
Locking device A for doors₁Housed compactly inside
Door lock device A ₁Reducing the overall size
Can be.

[0035]

As described above, the present invention has the following advantages. (1) The number of components of the emergency unlocking mechanism is small, and since it is compactly stored in the space inside the electric door locking device, the electric unlocking mechanism with the emergency unlocking mechanism is installed. The device could be downsized to a size similar to a mechanical door locking device. Therefore, it becomes possible to selectively install the electric door locking device with the emergency unlocking mechanism and the mechanical door locking device in the locker device whose dimensions are standardized. Especially,
There is an advantage that the electric door locking device with the emergency unlocking mechanism can be attached to the existing locker device equipped with the mechanical door locking device.

(2) Since the handle and the engaging rod are screwed simultaneously from the back side of the door, the structure for attaching the handle and the engaging rod is simple. In particular, it is convenient when performing work for replacing the door lock device of the existing locker device with the door lock device of the present invention.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a door locking device.

FIG. 2 is a front view of a door locking device.

FIG. 3 is a view as viewed in the direction of the arrow X in FIG. 2;

FIG. 4 is a view on arrow Y of FIG.

FIG. 5 is a perspective view of a door locking device.

FIG. 6 is a front view of the door locking device with a case removed.

FIG. 7 is a cross-sectional view of the periphery of a support shaft.

FIG. 8 is a perspective view of a handle and an engaging rod.

FIG. 9 is an explanatory diagram of a locked state of the door locking device.

FIG. 10 is an explanatory diagram of an unlocked state of the door locking device.

FIG. 11 is a front view of the locker device.

[Explanation of symbols]

A, A ₁ Door locking device C Rocker body D Door R Engagement rod 1 Outer case 3 Support plate 4 Inner case 11 Cylinder lock 13 Rotor 14 Key hole 19 Cam 23 Engagement protrusion 32 Solenoid 33 Plunger 41 Sensor for unlocking confirmation 42 Lock Confirmation Sensor 43, 45 Spindle 49 Drive Lever 53 Drive Protrusion 54 Pushed Protrusion 55 Lock Lever 56 Driven Wall 57 Protrusion 60 Latch 62 Engagement Hole 63 Engagement Step 72 Lock Plate 83 Long Hole 84 Opening 86 Fixing plate 87 Rod part 89 Handle

Claims (4)

[Claims] 1. A latch which is pivotally mounted in a case of a locking device and engages and disengages with an engaging rod fixed to a back surface of a door at a locking and unlocking angle, and a latch pivotally mounted in the case and having the locking angle. A locking lever that is biased in the engaging direction, a solenoid that operates by a locking and unlocking signal from the control unit, a driven projection that is pivotally attached to the case and that projects from the outer surface, and a drive projection. A drive lever in which the drive projection pushes the locking lever in the opposite direction by the operation of the solenoid in the unlocking direction, and a cylinder lock in which a key hole is opened in the front surface of the case and a cam is fixed to the rotor, A lock plate that is pivotally attached to the case, engages with the cam, and pushes the pushed protrusion when the rotor rotates in the unlocking direction, and the push protrusion is attached to the lock plate. The driven above Lever door for lock apparatus characterized by pushing the biasing direction opposite the locking lever. 2. An unlocking confirmation sensor for detecting rotation of the locking lever in the opposite direction to the bias, and a locking confirmation sensor for detecting rotation of the locking angle of the latch are provided in the case. The door locking device according to claim 1, wherein the door locking device is provided. 3. The engagement rod comprises a fixing plate screwed to the back surface of the door and a rod portion fixed to the fixing plate and detachable from the latch. The door locking device described in 1. 4. An opening is formed in the lock plate, the pushed projection is inserted into the opening, and the opening is rotated when the rotor is at a locking angle. 2. The door locking device according to claim 1, wherein the locked protrusion is pushed when the rotor is at an unlocking angle.