JP2803122B2 - Door closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a door closing device. The present invention can be applied to, for example, a door closing device for pulling a door in a half-latch state, which is a half-door state, to a full-latch state, which is a fully open state, and automatically closing the door.

(Prior Art) In recent years, in the field of automobiles, there has been provided a door closing device that forcibly closes to a full latching state by driving a motor when a door disposed to be openable and closable on a vehicle body is in a half door state, that is, a half latch state. Have been. In this type of door closing device, as disclosed in Japanese Patent Application Laid-Open No. 58-199184, the door is operated by transmitting the driving force of a motor to the arm via an electromagnetic clutch, thereby operating the arm. Activate the latch on the door and lock it to the striker on the vehicle side,
The doors are pulled into the interior of the car and automatically closed to the full latch condition.

In this door closing device, in the recent automobile in which the door tends to be in a half-latch state when the door is apt to be closed in a state where the window is closed because the sealing property in the vehicle interior is improved, from a half-latch state to a full-latch state, The door can be automatically retracted into the vehicle and closed.
Very meaningful.

In the door closing device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 58-191884, as disclosed on page 421 of the publication, when clothes or the like are sandwiched in the door, an electromagnetic clutch is used. When is turned off, the power transmission from the motor to the arm is shut off, so that the automatic closing operation of the door is stopped, and safety is ensured.

(Problems to be Solved by the Invention) By the way, in the door closing device disclosed in Japanese Patent Application Laid-Open No. 58-191884, as described above, when stopping the automatic closing operation of the door, the electromagnetic clutch is turned off. In this configuration, transmission of the driving force of the motor to the arm is cut off. As described above, in the method using the electromagnetic clutch, the electromagnetic clutch is relatively large and expensive, so that it is disadvantageous in terms of space and cost. Not always enough.

The present invention has been made in view of the above facts,
An object of the present invention is to provide a door closing device which can stop automatic door closing operation without using an electromagnetic clutch by employing a contacting means.

[Configuration of the invention]

(Means for Solving the Problems) A door closing device of the present invention is a device for closing a door that is openably and closably disposed on a structure such as a vehicle body, and is disposed on one of the structure and the door. A door lock mechanism disposed on the door lock, the door lock mechanism releasably locked to a locked portion provided on the other of the structure and the door, and closing the door by locking; and A first drive mechanism provided at least one of a door and a door lock, and a transmission mechanism interposed between the drive mechanism and the door locking mechanism, wherein the first drive mechanism is directly or indirectly operated by the drive mechanism.
And the first operating member is disengageably engaged and transmits the driving force of the driving mechanism to the door locking mechanism by the engagement, whereby the door locking mechanism increases the degree of closing of the door. A second operating member to be operated in the direction is provided with a shaft supporting means which is supported in a configuration in which the second operating member is coaxially stacked so as to be rotatable relative to each other.

The door closing device of the present invention includes a door lock, a locking mechanism, a drive mechanism, and a transmission mechanism.

The door lock is located on one of the structure and the door. The door locking mechanism has a function of releasably locking a locked portion provided on the other of the structure and the door, and closing the door by this locking. As the door locking mechanism, a latch mechanism having a rotatable latch may be employed, or another structure such as a hook may be employed. here,
The locked part provided on the other side is, for example, a striker,
It can be hook. Known strikers can be employed. In addition, as the structure where the door is arranged,
There are vehicles, such as automobiles, trucks, and buses, and structures such as houses, buildings, ships, storages, and the like. The door may be a swing type that is opened and closed by turning in a horizontal or vertical direction through a structure, or a slide type that is opened and closed by reciprocating in a horizontal or vertical direction with respect to the structure. The door is
It may be of a type that opens and closes an entrance, a boarding gate, and the like through which a person passes, or may be a type that opens and closes an opening through which a person does not pass, such as a window of a structure.

The driving mechanism can be formed using a motor, a cylinder, or the like. In the case of a motor, a speed reduction mechanism can be provided.

The transmission mechanism characterizing the present invention is interposed between the drive mechanism and the door locking mechanism, and has a function of transmitting the driving force of the drive mechanism to the door locking mechanism. The transmission mechanism includes a first operating member, a second operating member, and a contact unit. First
The operating member has a function of being directly or indirectly operated by the drive mechanism. The second actuating member can be, for example, lever-shaped, link-shaped, rod-shaped. The first operating member may be formed as a single body or as a plurality. The second actuating member engages the first actuating member;
The engagement has a function of operating the door locking mechanism in a direction to increase the degree of closing of the door. Accordingly, the second operating member has an engaging element such as a pin which engages with the first operating member. The second operating member can be formed by connecting at least two members such as a lever, a link, and a bar. The second operating member may be formed as a single body.
The contact means is configured to operate the second operating member and the second operating member by operating the operation unit.
Has a function of contacting at least one of the operating members. The engagement between the first operating member and the second operating member is released by the contact, and the automatic door opening / closing operation stops. As a form of the contact, a method in which at least one of the first operating member and the second operating member is hit, or a method in which the pressure is applied while contacting one of the first operating member and the second operating member can be adopted. The contacting means can be, for example, in the form of a lever, a link, a bar, or a weight. Alternatively, the contacting means may be a cylinder rod of a cylinder, and the contact may be made at the tip of the cylinder rod. Here, as the operation unit for operating the contacting means, for example, an inside handle for opening and closing the door from the inside of the structure, for example, from the vehicle interior, or an outside for opening and closing the door from outside the structure, for example, from the outside of the vehicle Handle can be adopted. Alternatively, switches operated manually or automatically may be used as the operation unit.

(Operation) When the drive mechanism is driven, the door locking mechanism is operated via the first operating member and the second operating member of the transmission mechanism, and the door is automatically closed.

When the operating means activates the contact means, the contact means strikes at least one of the first operating member and the second operating member to release the engagement therebetween. As a result, the transmission of the operating force of the first operating member to the second operating member is stopped, and the automatic closing operation of the door is stopped.

(Embodiment) An embodiment in which the door closing device of the present invention is applied to an automobile will be specifically described below with reference to the drawings.

[Configuration of Example]

(Door Lock A) In this embodiment, as shown in FIG. 1, the door lock A is held by the door X of the automobile, and includes a door lock A, a main base 2 and a sub base 3. As shown in FIG. 3, the door lock A has an attachment hole 5 for attachment to the inner panel of the door X. Third
As shown in the figure, the door lock A is provided with a latch mechanism 6 as a door locking mechanism.

(Latch mechanism 6) Next, the latch mechanism 6 will be described. As shown in FIG. 3, a latch 7, which is a main component of the latch mechanism 6, is held by a door lock A so as to be rotatable around a pin 8 in directions of arrows A1 and A2. Door lock A as shown in FIG.
A return spring 9 is interposed in this groove, and the leading end of the return spring 9 urges the pin 10 of the latch 7 to urge the latch 7 in the direction of arrow A2.
The latch 7 has a U groove 11, two different claws 12, 12 ', a cam surface 1
3, the cam surface 14 is formed. In the door A, a pole 15 is disposed so as to be rotatable about a pin 16 in the directions of arrows B1 and B2. The pawl 15 has a claw portion 17 and a projection portion 18 formed thereon. A return spring 19 is interposed between the door lock A and the pole 15, and the pole 15 is urged in the direction of arrow B1 by the spring force of the return spring 19. In FIG. 3, the position indicated by the one-dot chain line a is the position of the latch 7 when the door X is open, and the position indicated by the two-dot chain line c is the position of the latch 7 in the full latch state where the door X is fully closed. The position indicated by the solid line b in FIG. 3 is the position of the latch 7 in the half latch state in which the door is in the half door state. As shown in FIG. 2, a latch lever 20 is formed which rotates with the latch 7 about a pin 20a.

As shown in FIG. 1, the pins 23 held on the sub-base 3
An open lever 24 shared by the inside handle and the outside handle is rotatably supported in the directions of arrows E1 and E2 (see FIG. 2). Link 26 is connected. Further, the sub-base 3 holds a switch 27 for stopping the motor 43 in an emergency.
The protruding piece 29 of the open lever 24 can be pressed against the 27 knob 28. Further, a lift lever 34 is pivotally supported by the sub base 3 via a pin 33 so as to be rotatable in the directions of arrows F1 and F2. The wrist lever 34 is configured to rotate integrally with the pawl 15 described above. Further, a rocking lever 35 is held by the sub base 3.

As shown in FIG. 1, an inside lever 37 is rotatably held on the sub base 3 via a pin 36. The inside lever 37 is connected to an inside handle on the vehicle interior side via a wire (not shown).

When the inside handle is operated in the door opening direction, the inside lever 37 is operated around the pin 36, and the open lever 24 connected to the inside lever 37 is moved around the pin 23 in the direction of the arrow E1 in the direction of the return spring 38. The open link 26 operates downward, and the lift lever 34 rotates about the pin 33 in the direction of arrow F1. Therefore, lift lever 34
As shown in FIG. 3, the pole 15 that rotates integrally rotates in the direction of arrow B2 while resisting the spring force of the return spring 19,
The pawl 17 of the pawl 15 and the pawls 12, 12 'of the latch 7 come off,
The latch 7 is rotated in the direction of arrow A2 by the spring force of the return spring 9, so that the latch 7 reaches the door open position indicated by the two-dot chain line a in FIG. Similarly, when the outside handle on the outside of the vehicle is operated in the door opening direction, the open lever 24 rotates about the pin 23 in the direction of the arrow E1 as described above, so that the claw portion 12 of the latch 7 and the pole 15 claws
The latch 7 is rotated to a position shown by a two-dot chain line a in FIG.

(Drive Mechanism 40) Next, the drive mechanism 40 will be described mainly with reference to FIG. The drive mechanism 40 includes a cover 42 fixed to the sub base 3 with bolts 41, a motor 43 built in the cover 42, a worm 44 provided on a motor shaft 43a of the motor 43, and reduction gears 45a to 45c. And the rotating shaft 4 rotated by the gear 45c
And 6. As shown in FIG. 3, the door lock A holds a switch 49 having a knob 48. Switch
49 and the motor 43 are connected, and when the knob 48 is pressed by the cam surface 13 of the latch 7, the switch 49 is turned on,
The motor 43 is driven.

In this embodiment, the motor 43 stops when the gear 45c makes one rotation. That is, FIG. 1 shows a positional relationship between the conductive plate 51 having the notch 50 and the brushes 52 and 53. The conductive plate 51 is rotated by the rotating shaft 46. As shown in FIG. 1, in a normal state, one of the brushes 52 is
, But the other brush 53 faces the notch 50 of the conductive plate 51, and is in a non-contact state with the conductive plate 51. At this time, the switch shown in FIG.
49 knob 48 is pressed by the cam surface 13 of the latch 7 and the switch
When 49 is turned on, the motor 43 is energized and the conductive plate 51 rotates, but once one rotation, the other brush 53 again faces the notch 50 of the conductive plate 51, so the motor 43 is automatically turned off. .

(Transmission Mechanism) Next, the transmission mechanism 55 will be described. The transmission mechanism 55 is the first
As shown in the figure, a cam lever 56, an active lever 57 as a first operating member, a batch lever 58 as a second operating member, a slide lever 59 as a first operating member, and A cancel lever 60 is provided. The cam lever 56 is fixed to the tip of the rotating shaft 46. The cam lever 56 has a round pin-shaped projection 61 projecting therefrom. As shown in FIG. 9, the active lever 57 includes a first lever portion 57a, a second lever portion 57b, and a third lever portion 57c. The first lever portion 57a of the active lever 57 has an elongated hole 63 having a side wall portion 63a and a side wall portion 63b, and the second lever portion 57b has an elongated hole 64 formed therein. Third lever portion 57 of lever 57
A wire-shaped return spring 65 is fixed to c by a pin 66. Active lever as shown in FIG.
The projection 61 of the cam lever 56 is fitted in the long hole 63 of the 57. As shown in FIG. 11, the bushing lever 58 has a triangular portion 58a.
And a protruding piece 58b extending from one corner of the triangular portion 58a. A deformed hole 68 having a large hole area is formed in the triangular portion 58a of the bush lever 58. As shown in FIG. 1, a return spring 69 is interposed between the bush lever 58 and the sub base 3.

As shown in FIG. 10, the slide lever 59 has a bent piece 70,
A long hole 71 is formed. As shown in FIG. 1, the return spring 65 is in pressure contact with the bent piece 70, and constantly urges the bent piece 70 and thus the slide lever 59 in the direction of arrow C1. As shown in FIG. 4, the elongated hole of the slide lever 59
A pin 73 serving as a shaft supporting means is inserted into a hole 64 'of the active lever 57 and a hole 68' of the passive lever 58 via a push 74 and a washer 75 so as to be supported by the shaft. The engaging pin 76 is fixed to the slide lever 59, slides in the long hole 71 and the long hole 64 of the active lever 57, and is inserted into the deformed hole 68 of the passive lever 58. In this embodiment, as shown in FIG. 4, the active lever 5 is moved by a pin 73 and an engagement pin 76.
7. The passive lever 58 and the slide lever 59 are stacked and connected. The operating force of the active lever 57 is transmitted to the passive lever 58 by the engagement pin 76 that rotates about the pin 73 as the rotation center.

As shown in FIG. 1, the cancel lever 60 is rotatably held in the direction of arrows D1 and D2 coaxially with the inside lever 37 by a pin 36 fixed to the sub-base 3. The cancel lever 60 has a contact portion 78 at one end and a projecting piece 79 and a projecting piece 80 at the other end. As shown in FIG. 1, the projecting portion 24a of the open lever 24 is located between the projecting portion 79 and the projecting portion 80. Accordingly, when the open lever 24 operates as described above, the cancel lever 60 is rotated in the direction of the arrow D1 or D2 via the protruding piece 79 and the protruding piece 80. In addition, 1f is a stopper of the passive lever 58.

(Operation of Embodiment) Next, the operation of the above-described door closing device will be described together with the method of using the same.

First, a case where the door X in the open state is manually closed only will be described. In this case, as shown in FIG. 3, the striker 81 as a locked part on the body Y side is inserted into the U groove 11 of the latch 7 at the position shown by the two-dot chain line a by the spring force of the return spring 9, as shown in FIG. As X's closure progresses,
enter in. Therefore, the latch 7 is pressed by the striker 81 and pivots around the pin 8 in the direction of arrow A1, and at the full latch position indicated by the two-dot chain line c shown in FIG. , Whereby the door X is maintained in the fully closed state. When the door X is fully closed by manual operation only, the switch 49 is mounted on the cam surface 13 of the latch 7.
The knob 48 is pressed again, but the knob 48 is pressed again by the cam surface 14 of the latch 7, so that the switch 49 is kept in the off state, so that the motor 43 is not driven, and therefore the cam lever 56 and the active lever 57, the passive lever 58 does not operate. Of course, even when the door X is manually opened, the switch 49 is maintained in the off state, and the motor 43 does not rotate.

Next, when the door X in the open state is manually closed, the door X is in a half-latch state in which the door X is in a half-door state due to a weak manual pressing force or a high degree of airtightness in the vehicle interior. The following describes the case. In such a half-latched state, the latch 7 is located at the position shown by the solid line b in FIG. 3, and in such a half-latched state, the cam surface 13 of the latch 7 as shown in FIG. Press the knob 48 of the switch 49, so that the switch
49 is turned on, the motor 43 is energized, and the motor 43 is driven. Then, as is apparent from FIG. 1, the driving force of the motor 43 is transmitted to the rotating shaft 46 via the worm 44 and the gears 45a to 45c for reduction.
Therefore, the cam lever 56 rotates around the rotation shaft 46 in the direction of arrow G1. At this time, since the round pin-shaped projection 61 of the cam lever 56 is engaged with the elongated hole 63, the active lever 57 operates as if the engaging pin 76 rotates around the pin 73, and is therefore shown in FIG. The push lever 58 is also pushed by the engaging pin 76 and also operates while pulling the return spring 69, so that the projecting piece 58b of the push lever 58
Since the latch lever 20 is displaced in the direction of the arrow H1 shown in FIG. 7 by pressing 0, the latch 7 that rotates integrally with the latch lever 20 moves around the pin 8 to the full latch position shown by the two-dot chain line c in FIG. Rotate in A1 direction. Therefore, the door X is forcibly pulled toward the inside of the vehicle by the rotating latch 7, and the door X is automatically fully closed.

In this embodiment, the motor 43 is connected to the gear 45c as described above.
When the door X is fully closed, the motor 43 is automatically stopped and the operation of the passive lever 58 is also stopped. Originally, cam lever
56 returns to its original state before the motor 43 was driven, and is reset to the position shown in FIG.

By the way, as described above, during the operation of automatically pulling the door X from the half-latch position to the full-latch position to the inside of the body Y by the motor 43, clothes, fingers, etc. are caught between the door X and the body Y. Door X when it is crowded
It is necessary to immediately stop the automatic closing operation of the vehicle. That is, as shown in FIG. 7, when the active lever 57 and the passive lever 58 are being operated, the inside handle inside the vehicle or the outside handle outside the vehicle is operated for emergency. For example, when the inside handle is actuated, the inside lever 37 connected thereto is actuated, so that the open lever 24 shown in FIG. 2 rotates about the pin 23 in the direction of the arrow E1. Also, when the outside handle is operated, the open lever 24
Around the arrow in the direction of arrow E1. As a result, as shown in FIG. 7, the projecting portion 24a of the open lever 24 presses the projecting portion 79 of the cancel lever 60, and the cancel lever 60
Is rotated about the pin 36 in the direction of the arrow D1. Therefore, as shown in FIG. 8, the contact portion 78 of the cancel lever 60 contacts the bent piece 70 of the slide lever 59 downward from above. As shown in FIG. 8, the slide lever 59 slides downward along the elongated hole 64 of the active lever 57 while resisting the spring force of the return spring 65, and the engagement pin 76
Escapes once into the modified hole 68 of the passive lever 58.

As described above, the actuation force of the active lever 57 is transmitted to the hash lever 58 by the engagement pin 76 that rotates around the pin 73, and the engagement pin 76 escapes into the irregularly shaped hole 68. The engagement between the active lever 57 and the passive lever 58 is released. In the released state, even if the active lever 57 is operated by the cam lever 56, the operating force of the active lever 57 is reduced to the passive lever.
Transmission to 58 is blocked.

At this time, the open lever 24 is
Since it is rotating in the direction of arrow E1 shown in the figure, the projecting piece 29 of the open lever 24 escapes in the direction of arrow K as shown in FIG.
Accordingly, the knob 28 operates in the direction of arrow K, whereby the emergency stop switch 27 operates to turn off the power supply to the motor 43. Accordingly, the automatic closing operation of the door X is stopped, and the door X is not further closed by the motor 43.
No further biting of the fingers occurs and is safe.

When the open lever 24 rotates in the direction of the arrow E1 as described above, the open link 26 descends as described above, and the contact portion 26a of the open link 26 contacts the lift lever 34,
The lift lever 34 operates in the direction of arrow F1 about the pin 33, and the pawl 15 interlocking with the lift lever 34 rotates, so that the pawl 17 of the pawl 15 and the pawl 12 of the latch 7 come off. Therefore, the latch 7 pivots about the pin 8 in the direction of the arrow A2 to the position indicated by the two-dot chain line a in FIG. 3 by the spring force of the return spring 9, so that the user pulls the door X to open the door X. Is performed, the lock between the U groove 11 of the latch 7 and the striker 81 on the body Y side is completely released, and the door X is opened to the body Y.

As described above, even if the engagement pin 76 once escapes into the deformed hole 68 of the passive lever 58, the return spring
Since the bending piece 70 is urged by the spring force of 65, the slide lever 59 returns to the original position again along the long hole 64 of the active lever 57, and the passive lever 58 also moves by the spring force of the return spring 69. Return to the original position. Therefore, the passive lever 58, the active lever 57, the slide lever 59, and the engagement pin 76 are reset to the state shown in FIG.

(Effects of Embodiment) As described above, in this embodiment, as shown in FIG. 4, the active lever 57, the slide lever 59, and the passive lever 58 are stacked in three layers, which is advantageous for space saving. . Therefore, it is advantageous to install the door closing device of this embodiment in a small space inside the door X. In the present embodiment, the inside lever 37,
Since the cancel lever 60 is coaxially stacked and arranged on the pin 36 pivotally supporting the, the number of parts and the space saving are advantageous.

(Other Embodiments) In the above-described embodiment, the cam lever 56 makes one rotation around the rotary shaft 46 to fully close the door X. However, the present invention is not limited to this, and another embodiment shown in FIG. Like the cam lever
A method may be adopted in which the door X is fully closed by rotating the 56A halfway around the rotation shaft 46. In this case, the rotation shaft 46 rotates, the cam lever 56 operates in the direction of arrow G1, and the cam lever 56A
The projection 61A pushes the activation lever 57A to operate it to the position shown by the two-dot chain line. Thereafter, the activation lever 57A returns to the original position by the spring force of the return spring 69. The projection 61A of the cam lever 56A stops at a position 61B at a half-turned position. In this case, the side wall 63b forming the long hole 63 of the cam lever 56 of the above-described embodiment is unnecessary.

Further, as in another embodiment shown in FIG.
Protrusions 61e and 61f are provided at both ends in the length direction of 56E, and by rotating the cam lever 56E in the direction of arrow G2, the active lever 57E is pressed by the protrusion 61e to operate to the position shown by the two-dot chain line. In this case, when the projection 61e is disengaged from the active lever 57E, the active lever 57E returns to the original position by the spring force of the return spring 69.

In the embodiment shown in FIG. 1 and the embodiments shown in FIGS. 12 and 13, the projection 61, the projections 61A, 61B, 61e and 61f are fixed to the cam lever 56 and the cam levers 56A and 56E. However, the present invention is not limited to this, and a rolling element such as a roller may be used.

In addition, the door closing device of the present invention is not limited to the embodiments described above and shown in the drawings, and it is needless to say that the door closing device can be appropriately modified and implemented within a range not departing from the above.

〔The invention's effect〕

According to the door closing device of the present invention, even when an emergency such as biting of clothes occurs during the automatic closing operation of the door, the first operating member and the first operating member are operated by the operation of the contacting means. 2
Can be released from engagement with the operating member, so that the automatic closing operation of the door can be stopped or reduced, and safety can be improved. Further, since the active lever and the slide lever as the first operating member and the passive lever 58 as the second operating member are stacked in three layers, it is advantageous for saving space. Therefore, it is advantageous to install the door closing device of this embodiment in a small space inside the door X.

[Brief description of the drawings]

1 to 11 show one embodiment of the present invention, FIG. 1 is a side view of a door closing device, FIG. 2 is a side view different from FIG. 1, and FIG. 2 is a different direction. FIG. 3 is a side view mainly showing a latch mechanism, FIG. 4 is a cross-sectional view of a main part of FIG. 1, and FIGS. FIG. 5 is a side view of a main part showing an operation state, FIG. 5 is a side view in a door closed state, and FIG. 6 is a side view of a main part when the door is opened by operating an inside lever. FIG. 7 is a side view of a main part in a state where the active lever and the passive lever are engaged and operating, and FIG. 8 is a side view of the main part in a state where the engagement with the cancel lever is released. FIG. 9 is a side view of the active lever, FIG. 10 is a side view of the slide lever, FIG. 11 is a side view of the passive lever. FIG. 12 is a side view of a main part showing another embodiment of the present invention. FIG. 13 is a side view of a main part showing still another embodiment of the present invention. In the figure, A is a door lock, 6 is a latch mechanism (door locking mechanism), 7 is a latch, 20 is a latch lever, 40 is a drive mechanism,
43 is a motor, 46 is a rotating shaft, 55 is a transmission mechanism, 56 is a cam lever, 57 is an active lever (first operating member), 58 is a passive lever (second operating member), and 59 is a slide lever (first operating member). 60) Cancel lever (contact means), 68 is a modified hole, 73 is a pin (shaft support means), 78 is a contact part, 79 and 80 are protruding parts, 81 is a striker (locked part)
Are respectively shown.

Claims (2)

(57) [Claims] An apparatus for closing a door that is openably and closably disposed on a structure such as a vehicle body, a door lock disposed on one of the structure and the door, and a door lock disposed on the door lock. A door locking mechanism for releasably locking a locked portion provided on the other of the structure and the door and closing the door by the locking; and a door locking mechanism for the structure, the door and the door lock. A drive mechanism disposed at least on one side; and a transmission mechanism interposed between the drive mechanism and the door locking mechanism, wherein the transmission mechanism is directly or indirectly operated by the drive mechanism. A first actuating member and a first actuating member which is releasably engaged with the first actuating member and transmits the driving force of the driving mechanism to the door locking mechanism by the engagement; Operating part for operating in the direction in which the height increases DOO door closing device, characterized in that is comprises a pivotally supported means is rotatably supported by the relatively rotatable stacked configuration coaxially to each other. 2. The door closing device according to claim 1, wherein said first operating member is formed by laminating at least two members.