JP2001032589A - Door electric lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door electric lock for smoothing operation in the case of unlocking by facilitating the release of urging force even if the urging force of a spring for projecting a handle is indirectly applied to a latch. SOLUTION: A door electric lock is equipped with a case 1, a pivoting bush 2, a handle 3, a spring 4 and latches 5 and 5, a motor unit 6 and a slider 7, and when the handle 3 is pushed against the spring 4 after the slider 7 is driven by the motor unit 6, the urging force indirectly applied to the latches 5 and 5 is released, and it is so constituted that the latches 5 and 5 are separated from an engaging recess section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock for a door which can regulate the opening and closing of a door of a vending machine and can be operated remotely.

[0002]

2. Description of the Related Art An electric lock for a door of this type has been proposed by the applicant of the present invention and disclosed in Japanese Patent Application Laid-Open No. Hei 8-21893 (Japanese Patent Application No. Hei 7-29138 filed on Feb. 17, 1995). Door locks are known.

[0003] Referring to Fig. 22, the disclosed electric lock for a door will be described.
02, a handle 103, a spring 104, a pair of latches 105, 105 (see FIGS. 23 and 24), a motor unit 106, and a latch pushing member 107. Case 101
The mounting is done so that the surface is exposed.

[0004] A lever storage recess 109 is formed on the surface of the case 101, and a handle insertion hole 110 is formed in one side of the lever storage recess 109. The handle insertion hole 110 is formed with engagement recesses 111, 111 which are concaves corresponding to the tip shape of the latch 105 (see FIG. 23).

The rotary bush 102 is composed of a peripheral wall 112 and a rear wall 113, and is fitted into the handle insertion hole 110 so as to be rotatable but immovable in the axial direction. Openings 114, 114 (see FIG. 24) extending in the axial direction are formed in the peripheral wall 112. A locking cam 115 is attached to the rear wall 113 so that a lock member (not shown) for locking the door 108 to the vending machine main body (not shown) can be inserted and removed via a connecting rod (not shown). .

The handle 103 has a shaft 116 inserted movably in the axial direction of the rotating bush 102 and a lever 1 extending in a direction perpendicular to the front end of the shaft 116.
When the handle 103 is immersed, and the shaft portion 116 moves toward the rear wall 113 of the rotary bush 102, the lever portion 117 is stored in the lever storage recess 109. A latch insertion hole 118 is formed at the rear end of the shaft portion 116 so as to face the engagement recesses 111 when the handle 103 is immersed.

[0007] As shown in FIG. 23, the pair of latches 105 have a mountain-like tip shape so that they can be engaged with the engagement recesses 111. Further, a compression spring 119 is provided between the pair of latches 105, 105 to urge the pair of latches 105 away from each other. That is, the pair of latches 105, 105
Of the handle 103
Is immersed in the opening 1 of the rotating bush 102.
14, 114 (see FIG. 24)
1, 111.

As shown in FIG. 22, the spring 104 has a rear end portion of the shaft portion 116 and a rear wall 1 of the rotating bush 102.
13, the handle 103 is urged in a direction protruding from the surface of the case 101. Accordingly, when the pair of latches 105, 105 are moved in the direction of immersion into the shaft portion 116, the engagement recesses 111, 111
From the handle 1
03 protrudes from the surface of the case 101. Then, the pair of latches 105, 105 are opened 114, 11
4 along the edge 114 of the opening 114, 114
The protrusion of the handle 103 is restricted by abutting the handle a, 114a.

The motor unit 106 is, as shown in FIG.
The output shaft 121 is provided with a rotating disk 122 at the end thereof. Rotating disk 122
Is fixed to the tip of the output shaft 121 at the center thereof, and an eccentric shaft portion 123 is formed so as to protrude at a position eccentric from the center.

As shown in FIG. 23, the latch pushing member 107 is a plate-shaped member provided on the back side of the case 101, and is a long hole 12 into which the eccentric shaft portion 123 is loosely fitted.
4 and arms 125, 125 protruding toward the pair of latches 105, 105, respectively.

In the above configuration, when the administrator of the vending machine inputs a predetermined setting, the motor unit 106 operates to drive the latch pushing member 107 (to the right in FIG. 23). Then, the arms 125, 125
5 and 105, the latches 105 and 105 are sunk into the peripheral wall 112 of the rotary bush 102 by pushing the tips of the pivot bushes 102 (FIG. 25).
reference). As a result, the handle 103 protrudes from the surface of the case 101 (see FIG. 26), and the administrator
By rotating the door 3, the door 108 can be opened.

[0012]

In the prior art described above, when the handle 103 is immersed as shown in FIG.
105, the sliding resistance between the latches 105, 105 and the engaging recesses 111, 111 has increased. Accordingly, the load on the motor unit 106 is increased, and it is preferable in terms of configuration to equip a large motor to push the latches 105, 105 when unlocking.

However, if a large motor is provided, the electric lock for the door itself becomes large and the cost is increased. Therefore, it is difficult to realize the electric lock and there is room for improvement.

The above publication also discloses an electric lock for a door having a mechanism (a description is omitted) that can be mechanically unlocked, and thus includes such an electric lock for a door. It can be said that there is a need for improvement. In addition, it can be said that it is necessary to consider improvements required for the lock device as a whole, such as improvement in operability, reliability, and anti-theft property.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and even if the urging force of a spring for projecting a handle is indirectly applied to a latch, the urging force is easily released and unlocked. It is an object of the present invention to provide an electric lock for a door that can smoothly operate the door, eliminates an increase in size and cost, and improves operability, reliability, and antitheft property.

[0016]

According to a first aspect of the present invention, there is provided an electric lock for a door, wherein the case is provided on a door and has a handle insertion hole having an engaging recess. Is rotatably inserted into the handle insertion hole,
A rotary bush having a latch opening formed at a position opposed to the engagement recess, and a rotary bush that is slidably inserted in the axial direction of the rotary bush, and has a latch insertion hole perpendicular to the axial direction. A drawer-type handle having a shaft portion having a slider insertion hole formed therein, and a handle interposed between the rotating bush and the shaft portion in the axial direction, and attached in a direction to project the handle from the case surface. A biasing spring, which is biased by the spring, moves the latch insertion hole and the latch opening to engage or disengage with the engagement recess, and when engaging with the engagement recess, the case surface of the handle; A latch for preventing protrusion of the latch from being engaged with the engagement recess, the latch being inserted into the slider insertion hole to follow the movement of the handle, and being in contact with the latch to engage the engagement recess. A slider provided in the case, and a slider drive unit that is provided in the case and drives the slider in a direction in which the slider insertion hole extends through a drive member based on an unlocking signal; After the slider is driven by the slider drive unit to the restriction release position with respect to the engagement recess of the latch,
When the handle is pushed in the axial direction against the spring, the biasing force of the spring indirectly applied to the latch is released, and the latch is detached from the engagement recess. I have.

According to a second aspect of the present invention, there is provided the door electric lock according to the first aspect, wherein the latch is a pair of latches which are biased by springs in a direction to be attracted to each other. The slider is characterized in that a recess is formed at the restriction release position as a relief when the pair of latches is released from the engagement recess.

According to a third aspect of the present invention, there is provided an electric lock for a door according to the first or second aspect, wherein the engaging recess has a groove which is recessed in a projecting direction of the handle. ,
The latch is characterized in that when the handle is pushed in the axial direction against the spring, a projection is formed to release the engagement state with the groove.

According to a fourth aspect of the present invention, in the door electric lock according to any one of the first to third aspects, the slider drive unit drives the slider based on the unlock signal. Then, after a lapse of a predetermined time, the driving member is returned to a state before driving the slider.

According to a fifth aspect of the present invention, in the electric lock for a door according to any one of the first to fourth aspects, the slider is provided with a biasing force greater than a spring biasing force of the latch. It is characterized in that it is biased toward the slider drive unit.

According to a sixth aspect of the present invention, there is provided the door electric lock according to the fifth aspect, further comprising a movement restricting member for the slider.

According to a seventh aspect of the present invention, in the electric lock for a door according to any one of the first to sixth aspects, the case is connected to the shaft to form the handle. A lever receiving recess for a lever to be operated, and at least a part of a receiving unit for remotely controlling the slider drive unit is exposed in the lever receiving recess.

According to an eighth aspect of the present invention, there is provided an electric lock for a door according to the seventh aspect, wherein an end of the lever faces the receiving portion at least partially exposed. It is characterized in that a notched recess is formed.

According to a ninth aspect of the present invention, there is provided an electric lock for a door according to any one of the first to eighth aspects, wherein the slider drive unit electrically disconnects from a predetermined position of the door. An emergency unlocking drive member which is operated and can contact the slider separately from the drive member and drive the slider in the extending direction of the slider insertion hole is provided.

According to a tenth aspect of the present invention, there is provided an electric lock for a door,
The electric lock for a door according to claim 9, wherein the door is a door having a change port, and a cylinder lock for operating the emergency unlocking driving member via an interlocking member is disposed in the change port. It is characterized by:

According to the first aspect of the present invention, when an unlocking signal is given to the slider drive unit when the handle is immersed in the case, the slider is inserted into the slider insertion hole via the drive member. It will be driven in the extending direction. At this time, the slider is driven to the restriction release position with respect to the engagement recess of the latch. Further, the spring biases the handle in a direction to protrude from the surface of the case, but the biasing force acts indirectly on the latch, and the latch is not disengaged from the engagement recess, that is, the handle is in a state of being disengaged. Is in a state of preventing protrusion. Thereafter, when the handle is pressed against the spring from this state, the urging force is applied only to the handle, and the urging force of the spring which has been indirectly applied to the latch until then is released. Then, when the engagement between the latch and the engagement recess is released by the bias of the latch with the release of the biasing force, the handle projects from the surface of the case. From the above, even if the biasing force of the spring for projecting the handle is indirectly applied to the latch, the biasing force can be easily released, and the operation at the time of unlocking becomes smooth. Further, since the slider drive unit does not require a large load, the door lock does not become large. Furthermore, even when compared with the structure of the conventional electric lock for doors, it is not possible to find a factor of cost increase in the structure of the electric lock for door itself.

According to the second aspect of the present invention, the latch is not sunk inward outside the rotary bush unlike the prior art. The electric lock itself does not grow. Rather,
In view of the arrangement of the slider, it is possible to reduce the size.

According to the third aspect of the present invention, the latch cannot be disengaged from the engagement recess unless the handle is pushed in. Thus, even if the biasing force of the latch exceeds the biasing force of the spring, the handle does not protrude after the slider is driven to the release position.

According to the present invention, at the time of locking, the slider which has been at the restriction release position can be returned to the original position. Thereby, the latch can be engaged with the engagement concave portion, and the handle can be immersed. Therefore, the operation at the time of locking can be made smooth.

According to the fifth aspect of the present invention, when the handle is immersed, the latch easily moves in the direction in which the latch engages with the engagement recess. Therefore, with the above configuration, the operation at the time of locking can be further smoothed. Further, even if the unlocking card is accidentally unlocked after being locked, for example, the locked state is established.

According to the present invention, the slider does not move even if an impact force greater than the urging force is applied to the door lock from the outside. Can be improved.

According to the present invention described in claim 7, it is not necessary to provide the receiving section separately from the electric lock for the door.
The installation space for the receiving section does not have to be secured on the door. In addition, workability is very good because only the electric lock for the door is required for installation.

According to the present invention, the size can be further reduced without impairing the operability of the handle.

According to the ninth aspect of the present invention, the emergency unlocking can be performed by operating the emergency unlocking drive member even if the electric lock for the door is electrically broken.

According to the present invention described in claim 10,
Even if an attempt is made to unlock the cylinder lock in an unauthorized manner, the change port can prevent it and prevent crime. Also, since the position of the cylinder lock is very difficult to understand,
The antitheft property can be improved.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of an electric lock for a door according to the present invention. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 1, FIG. 4 is a rear view of the electric lock for a door, and FIG.
6 is a drawing of a single latch, and FIG. 7 is a drawing of a single slider. FIG. 8 is a rear view of FIG. 4 with the protective cover removed.

In FIG. 1, an electric lock for a door comprises a metal case 1 and a rotating bush 2 provided in the case 1.
Similarly, a handle 3, a spring 4 for urging the handle 3 toward the surface of the case 1, and a pair of latches 5 and 5 for regulating the protrusion of the handle 3 (see FIGS. 2 and 3)
And a motor unit 6 comprising a motor or the like having a speed reducer
(Equivalent to the drive unit described in the claims),
And a slider 7 driven by a motor unit 6. The slider 7 is attached to the surface of a door 8 of the vending machine, and when the door is locked, the pair of latches 5, 5
(See FIGS. 2 and 3) The urging force of the spring 4 which indirectly acts on (see FIGS. 2 and 3) can be easily released.

On the surface of the case 1, there is formed a shallow lever storage recess 9 extending in the longitudinal direction. One side (the right side in FIG. 1) of the lever storage recess 9 is formed in the longitudinal direction with respect to the longitudinal direction. A handle insertion hole 10 extending in the orthogonal direction is formed. A unit housing chamber 11 for the motor unit 6 is formed substantially at the center of the lever housing recess 9. The unit housing chamber 11 is separated from the lever housing recess 9 by a cover 12 formed integrally with the case 1. Have been. Further, on the other side (left side in FIG. 1) of the lever storage recess 9, an antenna accommodating chamber 14 for an antenna 13 serving as a receiving unit when remotely operating the door lock is formed.

The handle insertion hole 10 has an engagement recess 15 into which a pair of latches 5 and 5 (see FIGS. 2 and 3) engage.
15 (see FIGS. 2 and 3). The engagement recesses 15, 15 (see FIGS. 2 and 3) are cut out from the back surface to the front surface of the case 1.
(See FIGS. 2 and 3). The width of the engagement recess 15 (see FIG. 2)
(See FIG. 2).

The antenna 13 is composed of an antenna body 16 and a cover 17 made of a synthetic resin that covers the antenna body 16. The antenna housing chamber is formed so that a part of the cover 17 is exposed from the lever housing recess 9. 14. Since the antenna 13 is integrated, the door 8
It is not necessary to secure an installation space for the antenna 13 in other portions. In addition, workability is very good because only the electric lock for the door is required for installation. Antenna body 1
The electrical connection between the motor 6 and a control unit (not shown) of the motor unit 6 is not shown.

On the other hand, a metal plate-like cover 18 (see FIGS. 4 and 8) is fastened and fixed to the back surface of the case 1. The cover 18 is provided with an arc-shaped long hole 19 (see FIG. 8), and a protective cover 20 having a U-shaped cross section (see FIG. 4) near the long hole 19 (see FIG. 8). Is fixed.

The rotating bush 2 comprises a peripheral wall 21 and a rear wall 2.
2 and is formed in a substantially cup shape. Further, the rotating bush 2 is fitted into the handle insertion hole 10 so as to be rotatable and immovable in the axial direction.

The peripheral wall 21 is formed with latch openings 23 and 23 (see FIGS. 2 and 3) and a slider opening 24 (see FIG. 2) extending in the axial direction. Latch opening 2
The reference numerals 3 and 23 are formed to face the engagement recesses 15 and 15 (see FIG. 2). The slider opening 24 is disposed at a position rotated by 90 ° with respect to the latch opening 23,
It is cut out to the position of the lever storage recess 9 (see FIG. 3). Incidentally, reference numerals 25, 25 shown in FIG.
Is a stopper portion for the pair of latches 5,5.

On the outer surface of the rear wall 22, two projections 26, 2
6 are provided, and a locking cam 27 fitted to the projections 26, 26 is attached. The inner surface of the rear wall 22 has an annular stepped portion 2 with which one end of the spring 4 is engaged.
8 are formed.

The locking cam 27 has holes (not shown) corresponding to the projections 26, 26 and two cam portions 29, 29 (see FIG. 8).
When the locking cam 27 rotates, a lock member (not shown) provided at the upper and lower ends of the door 8 via the connecting rod (not shown) can be protruded and retracted. I have.

The handle 3 comprises a shaft portion 30 movably inserted in the axial direction of the rotary bush 2 and a lever portion 31 extending in a direction perpendicular to the front end of the shaft portion 30. When the handle 3 is immersed and the shaft portion 30 moves toward the rear wall 22 of the rotary bush 2, the lever portion 31 is stored in the lever storage recess 9.

At the rear end of the shaft 30, latch insertion holes 32, 32 (see FIG. 2) facing the engaging recesses 15, 15 (see FIGS. 2 and 3) when the handle 3 is immersed, A slider insertion hole 33 facing the opening 24 (see FIG. 2) is formed. An annular recess 34 with which the other end of the spring 4 is engaged is formed at the rear end of the shaft 30.

As shown in FIG. 3, the shaft 30 is formed hollow, and a guard cap 35 is fixed to the front end. The guard cap 35 is attached to the lever 31
A substantially disk-shaped protection portion 3 protruding outward from FIG. 5 (see FIG. 5).
6 and a fixed shaft 37, and the fixed shaft 37 has an annular groove 38 formed therein. The shaft portion 3 is provided in the annular groove 38.
The fixing screws 39, 39 which are screwed into the screw holes drilled at 0 are engaged. The guard cap 35 is formed of a metal that is sufficiently harder than the handle 3. By providing the guard cap 35, it is possible to prevent the handle 3 from being broken by a tool such as a drill. . Further, the guard cap 35 can be attached so as to be able to idle.

As shown in FIG. 5, the lever portion 31 has a notch concave portion 40 whose front end portion is cut out in a substantially U-shape, and the antenna 13 faces the antenna 13 through the notch concave portion 40. Is available. Note that the lever portion 31 may be cut off at the position of the imaginary line L without providing the cutout concave portion 40 to secure an exposed portion of the antenna 13.

As shown in FIG. 1, the spring 4 is a compression type conical spring. One end having a longer diameter engages with the annular step 28 of the rotary bush 2 and the other end has a shorter diameter. The end is adapted to engage with the annular recess 34 of the handle 3.

The pair of latches 5, 5 are shown in FIGS.
Is inserted into the latch insertion holes 32, 32,
They are arranged facing each other while being urged by a tension spring 41. To explain the latch 5 in more detail, FIG.
As shown in (a) to (c), the latch 5 is
2 and a spring shaft 43. The stopper 42 has a substantially triangular protrusion 44 which comes into contact with the slider 7 (see FIG. 7) and engages a recess 51 described later, and a latch insertion hole 32 (FIG. 2). And FIG. 3).
Are formed. The spring shaft 43 is fixed substantially at the center of the stopper 42. The groove 46 of the spring shaft 43 is adapted to engage with the end of the tension spring 41 (see FIGS. 2 and 3).

The slider 7 is inserted into a slider insertion hole 33, as shown in FIGS.
A compression spring 47 urges the spring toward the motor unit 6. The slider 7 will be described in more detail. As shown in FIGS. 7 (a) to 7 (c), the slider 7 is formed in a substantially rod shape, and one end having a thin wall is formed in consideration of a motor cam 54 described later. Part of the side surface is formed in an arc shape. Further, a concave portion 48 with which a claw 56 described later is engaged is formed on a side surface opposite to a part thereof. A recess 49 into which the compression spring 47 (see FIGS. 1 and 2) is inserted is formed at the other end with respect to the one end. On the other hand, the tension spring 4
1 (see FIGS. 2 and 3) is formed with a relief portion 50. Similarly, in the middle, substantially triangular depressions 51, 51 into which the projecting portions 44 (see FIG. 6) are engaged are formed. Reference numerals 52, 52 indicate the slider opening 24.
(See FIG. 2).

It is assumed that the positions of the depressions 51, 51 correspond to the restriction release positions described in the claims. Further, it is preferable that the urging force of the compression spring 47 is set to be larger than the urging force of the tension spring 41. That is, the compression spring 4
It is preferable that the urging force of 7 allows the latches 5 and 5 to be engaged and disengaged from the recesses 51 and 51.

Returning to FIG. 1, when the motor unit 6 receives an unlocking signal via the antenna 13, a control unit (not shown) operates the motor to unlock the electric lock for the door. . The control unit has a timer (not shown) and incorporates a control program for returning to an original state after a predetermined period of time from being unlocked (controlling to return to an original state). Therefore, even if the unlocking card is mistakenly unlocked after being locked, for example, the unlocked state is obtained (because the slider 7 is biased), whereby the antitheft property can be improved). .

A motor cam 54 (corresponding to a driving member described in the claims) is fixed to the tip of an output shaft 53 provided on a speed reducer (not shown) of the motor unit 6. An emergency cam 55 (corresponding to an emergency unlocking driving member described in the claims) is loosely fitted to the cover 18 side. Further, at the positions of the motor cam 54 and the emergency cam 55 in the axial direction, a claw 56 (see FIG. 2, corresponding to the movement restricting member described in the claims) is disposed. Reference numeral 57 denotes a guard plate made of a hard metal, which is a member for preventing a destructive action on the motor unit 6.

Incidentally, it is naturally possible to use a solenoid instead of the motor unit 6. At this time, it is necessary to reposition the slider 7 so that the moving direction of the slider 7 and the moving direction of the plunger of the solenoid coincide with each other, but illustration and description thereof are omitted.

The motor cam 54 is adapted to follow the rotation of the output shaft 53. As shown in FIG. 2, a contact portion 58 which comes into contact with the claw 56 and a slider for rotating the claw 56 are provided. It is provided with a first arc portion 59 for keeping the position of 7 unchanged and a second arc portion 60 for driving the slider 7. The first arc portion 59 is formed to have the same distance from the output shaft 53, and the second arc portion 6
0 is formed so that the distance from the output shaft 53 becomes gradually longer.

The emergency cam 55 is connected to the output shaft 53.
16 and is loosely fitted without following the rotation of the spring 61. As shown in FIG. 16, the spring 61 biases the spring 61 so that the spring 61 can always return to the original position. The shape is identical to the external shape of the motor cam 54 (see FIG. 2), and includes a contact portion 62, a first arc portion 63, and a second arc portion 64 having the same function. The second arc portion 64 includes a cover 1
8 (see FIG. 8) is provided with a projection 65 that slides in the long hole 19 (see FIG. 8), and the projection 65 has an emergency unlocking wire 66 (see FIG. 4 and described in the claims). One end 67 (see FIG. 4) of the corresponding interlocking member is engaged.

As shown in FIG. 2, the claw 56 has a claw portion 6 which engages with the concave portion 48 (see FIG. 7) of the slider 7 at one end.
The contact portion 58 of the motor cam 54 and the emergency cam 5 are provided in the vicinity of the claw portion 68.
5 (see FIG. 16) is formed with a flat portion 69 with which the contact portion 62 (see FIG. 16) abuts. The other end of the spring 7 is pivotally connected to the motor unit 6, and a spring 7
0 urges the motor cam 54 side. still,
The claw 56 is a member that restricts the slider 7 from moving in the unlocking direction when any impact is applied to the door lock (the anti-theft property is improved).

The operation of the door lock in the above configuration will be described.

At the time of locking, the handle 3 is immersed in the case 1 as shown in FIG. Further, as shown in FIG. 2, the motor cam 54 is in the initial position, and the slider 7 is urged by the compression spring 47 to
One end protrudes from 4 and is in contact with the motor cam 54. Further, the claw portion 68 of the claw 56 is engaged with the concave portion 48 (see FIG. 7) of the slider 7 to restrict the movement of the slider 7. In this state, since the one end of the slider 7 protrudes, the latches 5 cannot move inward and are engaged with the engaging recesses 15.

A gap D exists between the handle 3 and the rotary bush 2 as shown in FIG.
Can be pushed in the immersion direction by the gap D.

Next, at the time of unlocking, when the unlocking signal is received via the antenna 13 (see FIG. 1) by being remotely operated by a remote control switch or the like (not shown), the control unit (not shown) operates the motor. Then, the door electric lock is unlocked.

That is, as shown in FIG. 9, when the motor cam 54 first rotates in the direction of the arrow due to the operation of the motor, the claw 56 is pushed by the contact portion 58 of the motor cam 54 to rotate, and the slider The engagement between 7 and the claw 56 is released. At this time, since the slider 7 is in contact with the first arc portion 59 of the motor cam 54, the slider 7 is not driven.

When the motor cam 54 further rotates in the direction of the arrow and rotates to the position shown in FIG. 10, one end of the slider 7 is moved to the slider opening 24 by the second arc portion 60 of the motor cam 54. Pushed up to. In addition, the restriction release position of the slider 7 coincides with the locus drawn by the movement of the protrusion 44 of the latch 5. At this time, since the urging force of the spring 4 (see FIG. 1) is indirectly applied to the latches 5, 5, the latches 5, 5 do not move in the detaching direction.

From such a state, as shown in FIG. 11, the handle 3 is moved in the direction of arrow P to the clearance D (see FIG. 3).
When the latches 5 and 5 are pushed in,
Are in a non-contact state in the direction in which the urging force of the spring 4 acts. That is, the biasing force of the spring 4 is not applied to the latches 5 and 5.

Then, as shown in FIGS. 12 and 13, the latches 5, 5 are pulled toward each other to
Leave from 5 and 15. That is, since the protrusion 44 of the latch 5 enters the depression 51 (see FIG. 13) of the slider 7, the latch 5 is separated from the engagement recess 15.

Thus, as shown in FIGS. 14 and 15, the handle 3 projects from the surface of the case 1 and the door 8 can be unlocked.

At this time, the control unit (not shown) generates a control signal to return the motor cam 54 and the claw 56 to the initial positions shown in FIG. 2 after a predetermined time has elapsed.

Subsequently, when the door is closed and locked, as described above, since the motor cam 54 and the claw 56 have already returned to the initial positions, the locking is completed only by immersing the handle 3 (FIG. 2 etc.).

That is, when the handle 3 is immersed in the case 1, the slider 7 is urged by the urging force of the compression spring 47 and moves to the motor cam 54 side. Then, claw 5
6 slightly rotates against the urging force of the spring 70 due to its tip shape. When the claw 56 returns, the claw portion 68 and the concave portion 4
8 (see FIG. 7) are engaged. On the other hand, with the movement of the slider 7, the latches 5, 5 move in the direction away from each other (since the urging force of the compression spring 47 is larger than the urging force of the tension spring 41, as described above), and the engagement recesses 15, 15 are formed. Be involved. Thus, the locking is completed.

Next, the case of emergency unlocking will be described.

At the time of emergency unlocking, as shown in FIG. 4, the wire 66 is pulled, and the emergency unlocking is performed via one end 67 thereof. That is, as shown in FIG. 16, when the emergency cam 55 at the initial position is rotated to the position shown in FIG. 17, the slider 7 is driven in the same manner as the unlocking operation described above, and the unlocking is performed. Will be possible.

The other end of the wire 66 is provided with, for example, a cylinder lock 71 as shown in FIG. The cylinder lock 71 can be provided at various places on the door 8 (or may be integrated with the electric lock for the door), and if it is attached to the side surface of the change port 72 as shown in the figure, it is effective in terms of anti-theft property. (There is an advantage that it is hard to receive vandalism, and it is hard to find the cylinder lock 71 from the surface of the door 8.
The same applies to the product outlet.)

As described above with reference to FIGS. 1 to 18, even if the biasing force of the spring 4 for projecting the handle 3 is indirectly applied to the latches 5, 5, the biasing force is easily reduced. Can be canceled. Also,
Since the motor unit 6 only drives the slider 7, no large load is required, and the door lock does not become large. Furthermore, even when compared with the structure of the conventional electric lock for doors, it is not possible to find a factor of cost increase in the structure of the electric lock for door itself.

In addition, it goes without saying that the present invention can be variously modified without departing from the gist of the present invention.

That is, for example, the above-described latch 5 (see FIG. 6)
Can be replaced with a latch 5 'as shown in FIG. In the following description, the latches 5 'are provided with protrusions 73, 73 on stopper portions 45', 45 'of the stopper 42 (basically the same components as those of the latch 5 are denoted by the same reference numerals).
Are formed integrally, and as shown in FIG. 20, similarly to the above-described latches 5, 5 (see FIG. 6), engagement recesses 15 ',
15 ', the protrusions 73, 73 (see FIG. 21, only one shown) are formed in the grooves 74, 74 (see FIG. 21, only one shown) formed in the engagement recesses 15', 15 'respectively.
Are locked (by the urging force of the spring 4 (see FIG. 3)). The groove 74 is provided in the handle 3 (FIG. 14).
And FIG. 15).

Therefore, as long as the handle 3 (see FIG. 11) is not pushed in (in FIG. 21, the pushing direction is leftward, and the projecting direction is rightward), the latch 5 'is provided.
Cannot be disengaged from the engagement recess 15 '(the disengagement direction is downward in FIG. 21).
That is, when the handle 3 (see FIG. 11) is pushed in the above direction, the protruding portions 73, 73 (see FIG. 21, only one shown) are disengaged from the grooves 74, 74 (see FIG. 21, only one shown). Is released from the locked state.

Thus, even if the tension spring 41 (see FIG. 3) exceeds the urging force of the spring 4 (see FIG. 3), the slider 7 (see FIG. 3) is driven to the restriction release position. After that, the handle 3 (see FIG. 3) does not protrude without permission. Therefore, when the latch 5 'is used and the grooves 74, 74 are formed in the engagement recess 15', the reliability is improved.

In the above description, since the antenna 13 is integrated, there is no need to secure an installation space for the antenna 13 in the other part of the door 8. In addition, workability is very good because only the electric lock for the door is required for installation. However, the integration of the receiving unit such as the antenna 13 is not limited to the door lock as in the present embodiment. In other words, by performing electrical remote control,
(Vending machine) For an electric lock for doors provided with an electric unlocking means capable of opening a door closing a main body and a handle configured to project from the surface of the case by unlocking. Wherein the case has a lever storage recess for a lever constituting the handle, and at least a part of a receiving unit for remotely operating the electric unlocking means is exposed in the lever storage recess. Features.

[0081]

As described above, according to the first aspect of the present invention, an electric lock for a door is provided on a door and has a case formed with a handle insertion hole having an engaging recess.
A rotating bush rotatably inserted into the handle insertion hole and having a latch opening formed at a position facing the engagement recess;
A drawer-type handle which is inserted slidably in the axial direction of the rotating bush and has a shaft portion formed with a latch insertion hole and a slider insertion hole in a direction perpendicular to the axial direction; A spring interposed between the rotating bush and the shaft portion, which urges the handle in a direction to protrude from the case surface; and a spring urged to move the latch insertion hole and the latch opening to move into the engagement recess. A latch that is engaged or disengaged and prevents the handle from protruding from the case surface when engaged with the engagement concave portion; and a latch that is inserted into the slider insertion hole to follow the movement of the handle and contacts the latch to contact the latch. And a slider provided on the case and capable of restricting engagement or disengagement of the engagement concave portion with the engagement concave portion, and extending the slider insertion hole through the driving member based on the unlock signal. A slider drive unit that drives the handle in the axial direction after the slider is driven by the slider drive unit to the restriction release position with respect to the engagement recess of the latch. , The biasing force of the spring indirectly applied to the latch is released, and the latch is detached from the engagement recess. That is, when the unlock signal is given to the slider drive unit while the handle is immersed in the case, the slider is driven in the extending direction of the slider insertion hole via the drive member. At this time, the slider is driven to the restriction release position with respect to the engagement recess of the latch.
Further, the spring biases the handle in a direction to protrude from the surface of the case, but the biasing force acts indirectly on the latch, and the latch is not disengaged from the engagement recess, that is, the handle is in a state of being disengaged. Is in a state of preventing protrusion. Then, from this state, when pushing the handle against the spring, the urging force is applied only to the handle,
The biasing force of the spring which has been indirectly applied to the latch until then is released. Then, when the engagement between the latch and the engagement recess is released by the bias of the latch with the release of the biasing force, the handle projects from the surface of the case. From the above, even if the biasing force of the spring for projecting the handle is indirectly applied to the latch, the biasing force can be easily released,
The operation at the time of unlocking becomes smooth. Further, since the slider drive unit does not require a large load, the door lock does not become large. Furthermore, even when compared with the structure of the conventional electric lock for doors, it is not possible to find a factor of cost increase in the structure of the electric lock for door itself. still,
As a matter of course, the door can be unlocked without providing, for example, a cylinder lock on the surface of the door, so that a crime aimed at the cylinder lock can be prevented. This allows
The anti-theft property is improved.

According to the second aspect of the present invention, the latch is a pair of latches which are biased by springs in a direction in which they are attracted to each other. Since the recess is formed as a relief when detached from the engagement concave portion, an effect that the size can be reduced can be achieved. That is, as before,
Since the latch is not recessed inward outside the rotary bush, the door lock itself does not increase in the extending direction of the latch insertion hole. Rather, it is possible to reduce the size in consideration of the arrangement of the slider.

According to the third aspect of the present invention, the engaging recess has a groove that is recessed in the direction in which the handle protrudes, and the latch is provided when the handle is pushed in the axial direction against the spring. In addition, since the projection is formed so that the engagement state between the engagement recess and the groove is released, the latch cannot be disengaged from the engagement recess unless the handle is pushed in. Thus, even if the biasing force of the latch exceeds the biasing force of the spring, the handle does not protrude after the slider is driven to the release position. Therefore, there is an effect that the reliability can be improved in addition to the above.

According to the present invention, after the slider drive unit drives the slider based on the unlock signal, the drive member is returned to the state before the drive of the slider after a predetermined time. Therefore, at the time of locking, the slider that has been at the restriction release position can be returned to the original position. Thereby, the latch can be engaged with the engagement concave portion, and the handle can be immersed. Therefore, there is an effect that the operation at the time of locking can be performed smoothly.

According to the fifth aspect of the present invention, since the slider is biased toward the slider drive unit with a biasing force greater than the spring biasing force of the latch, when the handle is immersed, the latch is released. Move easily in the direction of engagement with the engagement recess. Therefore, the above configuration has an effect that the operation at the time of locking can be further smoothed. Incidentally, even if the unlocking card is mistakenly unlocked after locking, for example, the unlocked state is achieved, so that the antitheft property can be improved.

According to the sixth aspect of the present invention, since the movement restricting member for the slider is further provided, even if an impact force larger than, for example, the urging force is applied to the door lock from the outside, the electric lock for doors is applied. Since the slider does not move, the antitheft property can be improved.

According to the present invention, the case has a lever receiving recess for a lever which is connected to the shaft and constitutes a handle, and the slider receiving unit is provided in the lever receiving recess. Since at least a part of the receiving unit for remotely controlling is exposed, there is an effect that downsizing can be achieved. That is, since it is not necessary to provide the receiving unit separately from the electric lock for the door, it is not necessary to secure the installation space for the receiving unit on the door. In addition, workability is very good because only the electric lock for the door is required for installation.

According to the present invention, since the notch recessed portion facing the receiving portion at least partially exposed is formed at the end of the lever, the operability of the handle is improved. There is an effect that the size can be further reduced without any loss.

According to the ninth aspect of the present invention, the slider drive unit is operated non-electrically from a predetermined position of the door, and is in contact with the slider separately from the drive member to insert the slider into the slider insertion hole. Because it has an emergency unlocking drive member that can be driven in the extension direction of
Even if the door electric lock is electrically broken, the emergency unlocking can be performed by operating the emergency unlocking drive member.

According to the tenth aspect of the present invention,
The door has a change port, and in the change port, a cylinder lock that operates the emergency unlocking drive member via an interlocking member is arranged, so even if you try to unlock illegally aiming at the cylinder lock, There is an effect that the change port can prevent it and prevent crime. In addition, since the position of the cylinder lock is very difficult to understand, the anti-theft property can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an electric lock for a door according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a rear view of the electric lock for the door.

FIG. 5 is a front view of the handle.

FIG. 6 is a drawing of a latch alone, (a) is a plan view,
(B) is a front view, (c) is a left side view.

FIG. 7 is a drawing of a slider alone, (a) is a plan view,
(B) is a front view and (c) is a bottom view.

FIG. 8 is a rear view of FIG. 4 with a protective cover removed.

FIG. 9 is a cross-sectional view of the state immediately after the start of unlocking, as viewed from the cross-sectional direction along the line AA.

10 is a cross-sectional view of a state in which the motor cam is further rotated from the state of FIG. 9 to drive the slider, as viewed from a cross-sectional direction along the line AA.

11 is a cross-sectional view of the state in which the handle is pushed in the immersion direction in the state of FIG.

12 is a cross-sectional view of the state in which the latch is detached from the engagement recess from the state of FIG.

FIG. 13 is a cross-sectional view of the state of FIG. 12 viewed from the cross-sectional direction along the line AA.

14 is a cross-sectional view of the state in which the handle protrudes from the surface of the case from the state of FIG.

FIG. 15 is a cross-sectional view of the state shown in FIG. 14;

FIG. 16 is a cross-sectional view taken along the line AA, showing the arrangement of the emergency cam at the time of locking.

17 is a cross-sectional view taken along the line AA of FIG. 16 in a state where the emergency cam is unlocked from the state of FIG. 16 and the emergency cam is rotated in the unlocking direction.

FIG. 18 is an explanatory view showing an arrangement example of a cylinder lock for emergency unlocking.

FIGS. 19A and 19B are drawings of a latch unit as another example of the latch of FIG. 6, wherein FIG. 19A is a plan view, FIG.
(C) is a left side view.

FIG. 20 shows a state in which the latch of FIG.
It is sectional drawing seen from the line sectional direction.

FIG. 21 is a sectional view taken along line EE of FIG. 20;

FIG. 22 is a cross-sectional view of a conventional electric lock for a door.

23 is a sectional view taken along line CC of FIG. 22.

FIG. 24 is a sectional view taken along line DD of FIG. 23;

FIG. 25 is a cross-sectional view taken along the line CC of FIG.

FIG. 26 is a transverse sectional view showing a state at the time of unlocking.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Case 2 Rotating bush 3 Handle 4 Spring 5 Latch 6 Motor unit (drive unit) 7 Slider 8 Door 9 Lever storage recess 10 Handle insertion hole 11 Unit accommodation room 12 Cover 13 Antenna 14 Antenna accommodation room 15 Engagement recess 16 Antenna main body 17 Cover 18 Cover 19 Long Hole 20 Protective Cover 21 Peripheral Wall 22 Rear Wall 23 Latch Opening 24 Slider Opening 25 Stopper Part 26 Projection 27 Locking Cam 28 Ring Step 29 Cam Part 30 Shaft Part 31 Lever Part 32 Latch Insertion Hole 33 Slider Insertion hole 34 Annular concave portion 35 Guard cap 36 Protective portion 37 Fixed shaft 38 Annular groove 39 Fixing screw 40 Notch concave portion 41 Tension spring 42 Stopper 43 Spring shaft 44 Projection portion 45 Hakama portion 46 Groove 47 Compression spring 48 Recess 49 Recess 50 Peeling part 51 Depression 52 Stepped part 53 Output shaft 54 Motor cam (Drive member) 55 Emergency cam (Emergency unlocking drive member) 56 Claw (Movement restriction member) 57 Guard plate 58 Contact part 59 First arc part 60 First Two-arc part 61 Spring 62 Contact part 63 First arc part 64 Second arc part 65 Projection 66 Wire 67 One end 68 Claw part 69 Flat part 70 Spring 71 Cylinder lock 72 Change port 73 Projection part 74 Groove

Claims (10)

[Claims] 1. A case which is attached to a door and has a handle insertion hole having an engagement recess formed therein, and a latch opening which is rotatably inserted into the handle insertion hole and is opposed to the engagement recess. A drawer having a formed rotating bush, and a shaft portion which is slidably inserted in the axial direction of the rotating bush and has a latch insertion hole and a slider insertion hole formed in a direction orthogonal to the axial direction. A handle of a mold, a spring interposed between the rotating bush, which is in the axial direction, and the shaft portion, and biasing the handle in a direction to protrude from the surface of the case. While moving the hole and the latch opening to engage or disengage with the engagement recess,
A latch for preventing the handle from projecting from the case surface when engaged with the engagement recess; and a latch inserted into the slider insertion hole to follow the movement of the handle, and contact the latch to contact the latch. A slider capable of restricting engagement or disengagement with respect to the engagement concave portion; and a slider drive unit provided in the case and driving the slider in a direction in which the slider insertion hole extends through a drive member based on an unlock signal. After the slider is driven by the slider drive unit to the restriction releasing position of the latch with respect to the engagement concave portion, when the handle is pushed in the axial direction against the spring, the slider is indirectly connected to the latch. And the latch is released from the engagement recess by releasing the biasing force of the spring that is temporarily applied. Door for the electric lock to be butterflies. 2. The electric lock for a door according to claim 1, wherein the latch is a pair of latches that are spring-biased in a direction to be attracted to each other, and the pair of latches is engaged with the slider. An electric lock for a door, wherein a depression serving as a relief when detached from the recess is formed at the restriction release position. 3. The electric lock for a door according to claim 1, wherein the engagement recess has a groove that is recessed in a protruding direction of the handle, and the handle is attached to the spring by the latch. An electric lock for a door, wherein a protruding portion is formed to release a locked state with the groove when pushed in the axial direction in opposition. 4. The electric lock for a door according to claim 1, wherein the slider drive unit drives the slider based on the unlock signal to drive the slider after a predetermined time. An electric lock for a door, wherein the electric lock is configured to return to a state before driving of a slider. 5. The electric lock for a door according to claim 1, wherein the slider is biased toward the slider drive unit with a biasing force greater than a spring biasing force of the latch. Electric lock for door. 6. The door lock according to claim 5, further comprising a movement restricting member for the slider. 7. The electric lock for a door according to claim 1, wherein the case has a lever accommodating recess for a lever which is coupled to the shaft portion and constitutes the handle. An electric lock for a door, wherein at least a part of a receiving portion for remotely controlling the slider drive unit is exposed in the lever storage recess. 8. The electric lock for a door according to claim 7, wherein a cut-out recess is formed at an end of the lever, the cut-out recess facing at least a part of the lever and facing the receiving unit. Electric lock. 9. The electric lock for a door according to claim 1, wherein the slider drive unit is non-electrically operated from a predetermined position of the door, and is separate from the drive member. An electric lock for a door, comprising an emergency unlocking drive member capable of driving the slider in the extending direction of the slider insertion hole in contact with the slider. 10. The electric lock for a door according to claim 9, wherein the door is a door having a change port, and a cylinder for operating the emergency unlocking drive member via an interlocking member in the change port. An electric lock for a door, wherein a lock is provided.