JPH06242641A - Locking device - Google Patents

Abstract

PURPOSE:To provide a locking device capable of preventing plural units from being pulled out at the same time and easily being applied to a copying machine equipped with an opening/closing part. CONSTITUTION:When the lowermost paper housing part out of four paper housing parts is pulled out from a housing, a guide pin 20 corresponding thereto is released from a locking part 11a. Therefore, a slider plate 11 drops and the upper end faces of respective horizontal parts 19b of the locking parts 11b to 11d are engaged with guide pins 21 to 23. As a result, the release of the remaining guide pins 21 to 23 from the respective locking parts 11b to 11d is prevented, and other paper housing parts can not be pulled out, and such a state that the opening/closing part can not be opened (locked state) is attained. When any two paper housing parts are pulled out at the same time out of the three paper housing parts, two corresponding slider plates fall at the same time, and both paper housing parts are in the locked state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus such as a copying machine in which a plurality of units are vertically stacked in a housing in a vertically stacked manner, and each unit can be pulled out horizontally from a housing. The present invention relates to a lock device for preventing pulling out and preventing a fall.

[0002]

2. Description of the Related Art Conventionally, in a copying machine for making a recording paper using a large-sized original such as a large-sized drawing, a roll paper is loaded in a paper feeding section without using a cut paper, The paper is sent out, cut into a predetermined size, and then conveyed toward the image recording unit. As such a copying machine, for example, a plurality of roll papers of different sizes and a paper feed mechanism are unitized so that roll papers of a plurality of sizes can be selectively used, and the roll papers are provided in a vertically stacked state. There is.

In this type of copying machine, it is general that a plurality of units can be pulled out horizontally from the housing for replacement of roll paper.

However, when a plurality of units are simultaneously drawn out in this way, the entire copying machine is vertically long and the roll paper inside is relatively heavy, so the center of gravity moves in the direction of drawing out the units and falls. There is a risk. In addition, this type of copying machine is equipped with an opening / closing part (clam shell) that can be opened and closed by rotating around the shaft part for maintenance and inspection of the image forming part. The center of gravity of the entire device may move, and the device may fall over as well.

In order to prevent such a device from tipping over, when any unit is pulled out or when the opening / closing portion is opened, the other unit is pulled out from the storage position or the opening / closing portion is opened. It is necessary to provide a locking device that prevents it from being opened. Furthermore, even if you try to pull out any two units at the same time,
It is necessary to prevent this.

Conventional locking devices of this type are, for example, Japanese Utility Model Laid-Open No. 58-49477 and Japanese Utility Model Laid-Open No. 63-.
There is one disclosed in Japanese Unexamined Patent Publication No. 140238 (a mechanism for simultaneously withdrawing a plurality of units in a multi-tier stacking rocker), which makes it possible to prevent a plurality of units from being withdrawn simultaneously.

[0007]

However, the conventional simultaneous withdrawal prevention mechanism is applied to a copying machine having an opening / closing part (clam shell) as described above due to the structure of the mechanism, and when the opening / closing part is opened. However, there is a problem in that it is difficult to configure the lock mechanism to operate. Also,
There is also a problem that it is not easy to attach and detach each unit to the chassis.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a locking device which can prevent a plurality of units from being pulled out at the same time and can be easily applied to a copying machine having an opening / closing section. To provide.

Further, the present invention provides a lock device which can prevent a plurality of units from being pulled out at the same time, can be easily applied to a copying machine having an opening / closing section, and can be easily attached and detached. With the goal.

[0010]

According to a first aspect of the present invention, a lock device is applied to a plurality of units which are vertically stacked in a multi-stage state in a housing and which are mounted so as to be freely drawn out from the housing. And a plurality of pin members that can be displaced according to the unit when each of the plurality of units is pulled out, are provided corresponding to each of the plurality of units, and are arranged adjacent to each other in a vertical state in the housing, and , Each having a locking portion that is locked in a state in which the pin member of the corresponding unit is inserted and has a lock portion corresponding to a pin member of a unit other than the corresponding unit at different positions in the vertical direction. However, when the corresponding unit is pulled out, the locked state between the locking portion and the corresponding pin member is released, and at the same time, the locking portion corresponds to the corresponding unit. It is obtained by including a plurality of slide member for preventing the withdrawal of other units by the pin member engages the other units other than Tsu bets.

In this locking device, when any one unit is pulled out from the housing, the pin member of this unit is released from the locking portion of the corresponding slide member.
Therefore, the slide member falls, and the lock portion of the slide member engages with the corresponding pin member. As a result, the release of the pin member in the other unit from the locking portion is blocked, the other unit cannot be pulled out, and the entire device is prevented from falling.

Further, when any one of the plurality of units is tried to be pulled out at the same time, the corresponding plurality of slide members are simultaneously dropped, so that all the units are locked.

According to another aspect of the lock device of the present invention, a plurality of units are vertically stacked in a housing in a multi-tiered manner, and each unit is mounted so as to be horizontally drawn out from the housing, and a shaft portion is provided on an upper portion of the housing. The present invention is applied to the one having a rotatable opening / closing portion at the center, is provided corresponding to each of the plurality of units and the opening / closing portions, and can be displaced according to the pulling-out operation of the unit or the rotating operation of the opening / closing portion. A plurality of pin members, corresponding to each of the plurality of units and each of the opening / closing sections, arranged vertically adjacent to each other in the housing, and respectively corresponding to different positions in the vertical direction. And a pin member of the opening / closing part that is locked while the pin member of the opening / closing part is inserted. And has a lock part, and when the corresponding unit is pulled out or the opening / closing part is opened, the locking state between the locking part and the corresponding pin member is released, and at the same time, the locking part corresponds. And a plurality of slide members that engage with the pin members of each part other than the opening / closing part to prevent the other parts from being pulled out.

In this locking device, the locking device according to claim 1 is applied to a device having an opening / closing part together with a plurality of units, and the unit and the opening / closing part are included.
It is possible to prevent any two simultaneous withdrawals.

According to a third aspect of the present invention, the lock device is applied to a plurality of units which are vertically stacked in a housing in a multi-tiered manner and which are mounted so as to be respectively pulled out from the housing. A plurality of pin members that can be displaced according to the unit at the time of each pulling out, are provided corresponding to each of the plurality of units, are arranged adjacent to each other in a vertical state in the housing, and are arranged in a vertical direction with respect to each other. The corresponding unit has lock portions that are locked at different positions while the pin members of the corresponding units are inserted, and lock portions that correspond to the pin members of units other than the corresponding unit. At the time of pulling out, the locked state between the locking portion and the corresponding pin member is released, and at the same time, other than the unit to which the locking portion corresponds. A plurality of slide members that engage with the knit pin member to prevent other units from being pulled out, and the ends of the locking and locking portions of the plurality of slide members on the insertion side of the pin member. Each part is provided with an inclined part.

In the lock device according to the first aspect of the present invention, an inclined portion is provided at each of the engaging portion and the lock portion of each slide member on the insertion side of the pin member, whereby the pin member is provided. Moves smoothly, making it easy to install and remove the unit.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overall schematic structure of a copying machine equipped with a lock device according to an embodiment of the present invention. The case 1 of this copying machine is formed vertically long.
On the other hand, sheet storage units 2 to 4 are provided as units. Although not shown, the sheet accommodating portions 2 to 4 accommodate roll sheets and the like, and are arranged in the housing 1 in a multi-tiered stack in the vertical direction. Paper storage unit 2-4
Can be horizontally pulled out from the housing 1 forward (left side in the drawing) along the guide portions 5 to 7 of the rail structure.

An opening / closing part (clam shell) is provided on the top of the casing 1.
8 are provided. The opening / closing part 8 can be opened and closed by rotating around the shaft part 8a in a direction shown by an arrow in the figure.
The opening / closing part 8 is biased in the opening direction by the elastic force of the spring 9 provided between the housing 1 and the opening / closing part 8.
In a normal state (when the apparatus is used), the latch member 39 described later closes the upper surface of the housing 1 against the elastic force of the spring 9.

In this copying machine, the sheet accommodating sections 2-4 and the opening / closing section 8 are mechanically interlocked with each other by the lock device 10, and when any one of the sheet accommodating sections 2-4 is pulled out. The other sheet storage units 2 and 3 cannot be pulled out, and the opening / closing unit 8 cannot be opened.
When the opening / closing unit 8 is opened, the other paper storage units 2 to
You can not pull out any of the four.

FIG. 2 shows a specific structure of the lock device 10. 3 is a view seen from the direction shown by arrow A in FIG. 2, and FIG. 4 is a view seen from the direction shown by arrow B in FIG. The lock device 10 has a lock case 1a provided in the housing 1, and four slider plates 11 to 14 as slide members are provided in the lock case 1a.
Is provided. In addition, these slider plates 11
The number of sheets to 14 corresponds to the total number of the sheet storage units 2 to 4 and the opening / closing unit 8.

The slider plates 11 to 14 are arranged vertically in the lock case 1 so as to be adjacent to each other. As shown in FIG. 6, these slider plates 11 to 14 have slits 15a to 15d formed in the guide block 15 at their upper, middle and lower portions, respectively, so that they are parallel to each other at regular intervals. It is held slidably.

FIG. 5 shows the structure and mutual arrangement of the slider plates 11 to 14 taken out. The slider plates 11 to 14 each have a locking portion 11a.
14a are provided. The locking portions 11a to 14a are formed by notches each having an inclined portion 16 and a horizontal portion 17. The size (width) is almost the same as the diameter of guide pins 21 to 23 to be described later, and the pins 21 to 23 can move in a sliding state. Locking parts 11a to 1
4a are arranged at positions different from each other in the vertical direction of the slider plates 11 to 14, and in the present embodiment, they are set so as to be sequentially higher from the right slider plate 11 to the right slider plate 14. The locking portion 14a provided on the slider plate 14 is provided in a direction different from the locking portions 11a to 13a of the other slider plates 11 to 13 (in the rear direction of the housing 1 in FIG. 1).

On the slider plate 11 corresponding to the sheet accommodating portion 4, lock portions 11b are provided at three positions above the engaging portion 11a.
11d are provided. Two of these locks 1
1b and 11c are the inclined part 18 and the horizontal part 19
It is formed by a notch having a and 19b. The height of the horizontal portion 19b on the back side is almost twice the diameter of guide pins 20 to 23 described later, and the horizontal portion 19a connecting the horizontal portion 19b and the inclined portion 18 is the horizontal portion of the locking portion 11a. 1
Similar to 7, the guide pins 20 to 23 are set to such a size that they can move. The other lock portion 11d is formed only by the inclined portion 18 and the horizontal portion 19b so that the guide pin 23 can be easily rotationally displaced, as described later,
The horizontal portion 19a is not provided. The lock portion 11d is provided in a direction different from that of the lock portions 11b and 11c (in the rear direction of the housing 1 in FIG. 1).

The other slider plates 12 to 14 are similarly provided with lock portions. That is, the paper storage unit 3
In the slider plate 12 corresponding to
Lock portions 12b and 12c are provided at two locations on the upper portion of 2a, and a lock portion 12d is provided at the lower portion of the locking portion 12a.
The two lock portions 12b and 12d are similar to the lock portions 11b to 11d of the slider plate 11, respectively.
8 and the horizontal portions 19a and 19b. Similar to the lock portion 11d of the slider plate 11, the other lock portion 12c is formed only by the inclined portion 18 and the horizontal portion 19b.
a is not provided. The lock portion 12c is provided in a direction different from that of the lock portions 12b and 12d (in the rear direction of the housing 1 in FIG. 1).

In the slider plate 13 corresponding to the sheet accommodating portion 2, the lock portion 13 is provided above the engaging portion 13a.
b, and the lock portion 13 is provided at two locations below the locking portion 13a.
c and 13d are provided. Two locks 13c,
13d are lock parts 11 of the slider plate 11, respectively.
Similar to b to 11d, the inclined portion 18 and the horizontal portion 19a,
It is formed by a notch having 19b. The other lock portion 13b is the lock portion 11d of the slider plate 11.
Similarly to the above, it is formed only by the inclined portion 18 and the horizontal portion 19b, and the horizontal portion 19a is not provided.
It should be noted that this lock portion 13b is different from the other lock portions 13c, 13
It is provided in a direction different from d (the rear direction of the casing 1 in FIG. 1).

A slider plate 14 corresponding to the opening / closing section 8
In the lower part of the locking portion 14a,
4d is provided. Like the lock portions 11b to 11d of the slider plate 11, the lock portions 14b to 14d are each formed by a notch having an inclined portion 18 and horizontal portions 19a and 19b. Lock parts 14b-14
d is provided in a direction different from that of the locking portion 14a (front direction of the housing 1 in FIG. 1).

In the above slider plates 11-14, the locking portion 11a of the slider plate 11 and the lock portions 12d, 13 of the other slider plates 12-14 are used.
c and 14b are horizontally opposed to each other. Similarly, the locking portion 12a of the slider plate 12 and the lock portions 11b of the other slider plates 11, 13 and 14,
13d, 14c, the locking portion 13a of the slider plate 13
And the lock portions 11c, 12b, 14d of the other slider plates 11, 12, 14 and the slider plate 1
4 and the other slider plates 11, 12,
Lock portions 11d, 12c, and 13b in 13 are arranged horizontally opposite to each other.

The guide pin 2 as a pin member is provided on the horizontal portion 17 of the locking portion 11a of the slider plate 11.
0, a guide pin 21 on the horizontal portion 17 of the locking portion 12a of the slider plate 12, a guide pin 22 on the horizontal portion 17 of the locking portion 13a of the slider plate 13, and a horizontal portion 17 of the locking portion 14a of the slider plate 14.
Guide pins 23 are inserted in the respective guides. The guide pin 20 is erected in the horizontal direction with respect to the guide portion 7 of the lowermost sheet storage portion 4. The guide pin 21 is erected in the horizontal direction with respect to the guide portion 6 of the sheet storage portion 3 in the middle stage. The guide pin 22 is erected in the horizontal direction with respect to the guide portion 5 of the upper sheet storage portion 2. Guide pin 23
Is erected in a horizontal direction with respect to a later-described rotating member 30 (FIG. 8) of the opening / closing part 8.

In the state where the guide pin 20 is locked to the locking portion 11a of the slider plate 11, the slider plate 11 is lifted, and as a result, the other locking portion 11b.
In 11d, the guide pin 20 is located at the bottom of each horizontal portion 19b and is in an unlocked state. This also applies to the other guide pins 21, 22, 23.

The guide pins 20, 21 and 22 are respectively guided by the guide portions 7, 6 and 6 as the paper accommodating portions 4, 3 and 2 are pulled out.
When 5 moves horizontally to the front of the device (on the lower right side in FIG. 2), the inclined portion 1 moves from each horizontal portion 17 of the locking portions 11 a to 13 a.
6 is slidably displaced and released from the locking portions 11a to 13a.

Here, when the guide pin 20 corresponding to one sheet accommodating portion, for example, the sheet accommodating portion 4, is released from the locking portion 11a, the slider plate 11 falls by its own weight and the lock portions 11b to 11d. The upper end surface of each horizontal portion 19b is adapted to engage with the guide pins 21 to 23. In this state, the lock portion 1 of each of the guide pins 21 to 23 is formed by the wall surface between the horizontal portion 19b and the horizontal portion 19a.
Release from 1b-11d is blocked. That is, the remaining sheet storage units 3 and 2 cannot be pulled out from the housing 1,
In addition, the opening / closing part 8 cannot be opened (locked state). 1 and 7 respectively show this locked state. This is the same even when the other sheet storage units 2 and 3 are pulled out.

When the opening / closing part 8 is opened, the remaining guide pins 23 are rotationally displaced along the inclined part 16 from the horizontal part 17 of the locking part 14a of the slider plate 14 toward the rear part of the device, and Is released from the locking portion 14a. This guide pin 23 is the locking portion 1.
When released from 4a, the slider plate 14 falls and the upper end surface of each horizontal portion 19b of the lock portions 14b to 14d engages with the guide pins 20 to 22 as in the case of the slider plates 11 to 13. In this state, the guide pins 20 to 2 are formed by the wall surface between the horizontal portions 19b and 19a.
2 is prevented from being released from the respective lock portions 14b to 14d. That is, all the sheet storage units 4, 3, 2 cannot be pulled out from the housing 1 (locked state).

8 to 10 are views for explaining the structure of the connecting portion of the opening / closing mechanism 30 of the opening / closing portion 8 and the lock device 10, respectively. 8 to 10 show a state in which the opening / closing part 8 is closed with respect to the housing 1.

The guide pin 23 for locking the slider plate 14 is attached to the rotating member 30. The rotating member 30 is rotatable around the shaft portion 30a. The rotating member 30 is connected to the lower end of the link member 32 via a rotatable pin 31.

The link member 32 is vertically movable. When the link member 32 is lifted, the rotating member 30 is rotated in the direction shown by the arrow in FIG. As a result, the guide pin 23 disengages from the locking portion 14a of the slider plate 14 described above, and the slider plate 14 falls, whereby the lock portions 14b to 14d are locked. As a result, the pulling out of all the sheet storage units 4, 3, 2 is prevented.

The upper end of the link member 32 is connected to the end of the rotating member 34 via the shaft 33. Rotating member 34
Is rotatable about the shaft portion 34a. A bracket 39 is fixed to the upper end surface of the housing 1. This bracket 39 has two vertical walls 39a, 3
9b and 90 for these vertical walls 39a, 39b
A vertical wall 39c that is bent once is provided.
The shaft portion 34a is fixed by penetrating the brackets 39a and 39b. A spring 41 is wound around the shaft portion 34a, and one end of the spring 41 is attached to the bracket 3
The vertical wall 39c of 9 and the other end are connected to the rotating member 34. As a result, the rotating member 34 is biased in the direction indicated by the arrow in FIG.

A U-shaped groove 35 is provided at the upper end of the rotating member 34. An engagement pin 37 of a latch member 36 attached to the frame on the opening / closing portion 8 side is engaged with the U-shaped groove 35. This engagement state prevents the rotation member 34 from rotating in the direction of the arrow shown in FIG. 8 and holds it at the position shown by the solid line in the figure. The latch member 36 is rotatable about a shaft portion 38 provided on the frame on the opening / closing portion 8 side.

The latch member 36 and the opening / closing portion 8 are connected by a spring 43 as shown in FIG. The elastic force of the spring 43 urges the latch member 36 in the right direction in FIG. 10, that is, in the direction in which the engaging pin 37 is engaged with the U-shaped groove 35 of the rotating member 34. The latch member 36 is provided with a locking portion 36a at a lower portion thereof, and the locking portion 36a is mounted on the vertical wall 39 of the bracket 39.
It abuts on a stopper pin 40 provided between a and 39b. As a result, the latch member 36 is held vertically.

As shown in FIG. 10, a handle 42 for opening and closing is provided at the rear end of the opening / closing section 8. The handle 42 is rotatable around a shaft portion 42a, and an intermediate portion thereof and a lower end portion of the latch member 36 are connected by a link member 44. The link member 44 and the handle 42 are connected by a shaft portion 44a, and the link member 44 and the latch member 36 are connected by a shaft portion 44b, and they are respectively rotatable.

That is, when the handle 42 is rotated clockwise as shown by the arrow in FIG. 10, the latch member 3
6 rotates in the same direction around the shaft 37 against the elastic force of the spring 43. Therefore, the engaging pin 37 provided at the lower end of the latch member 36 is disengaged from the U-shaped groove 35 of the rotating member 34, and the rotating member 34 is elastically moved by the spring 41 as shown by the arrow in the figure. It rotates in the counterclockwise direction in the figure around 34a. Thereby, the link member 32
As described above, the rotating member 30 is rotated in the direction indicated by the arrow in FIG. 8 by the rising of the link member 32. As a result, the guide pin 23 separates from the locking portion 14a of the slider plate 14 as described above, and the lock portion 14b is released.
The lock state is set at 14d.
The rotating member 34 is engaged with the stopper pin 45 and stopped by rotating by a certain angle.

Next, the operation of the lock device 10 in the copying machine of this embodiment will be described.

First, of the sheet accommodating sections 2 to 4, for example, when the sheet accommodating section 4 is pulled out as shown in FIG. 1, the guide pin 20 corresponding to the sheet accommodating section 4 is locked by the locking section 11.
is released from a. Therefore, as shown in FIG. 7, the slider plate 11 falls and the upper end surfaces of the horizontal portions 19b of the lock portions 11b to 11d engage with the guide pins 21 to 23. This prevents the remaining guide pins 21 to 23 from being released from the lock portions 11b to 11d. That is, the paper storage units 3 and 2 cannot be pulled out from the housing 1,
In addition, the opening / closing part 8 cannot be opened (locked state).

The operation is the same even when either one of the other sheet accommodating portions 2 and 3 is pulled out, and the description thereof is omitted.

Next, when the opening / closing portion 8 is opened by the handle 42, the latch member 36 rotates in the same direction about the shaft portion 37 against the elastic force of the spring 43. As a result, the engaging pin 37 of the latch member 36 is disengaged from the U-shaped groove 35 of the rotating member 34, and the rotating member 34 is centered on the shaft portion 34a by the elastic force of the spring 41 as shown by the arrow in FIG. Rotate clockwise. Along with this, the link member 32
Rises, and the link member 32 rises to cause the rotating member 3 to move.
0 is rotationally displaced in the direction shown by the arrow in FIG. as a result,
The guide pin 23 is the locking portion 14 a of the slider plate 14.
It moves from the horizontal portion 17 along the inclined portion 16 and is released from the locking portion 14a. As a result, the slider plate 14 falls and the horizontal portions 1 of the lock portions 14b to 14d are
The upper end surface of 9b comes into contact with the guide pins 20 to 22 and becomes engaged. Therefore, the release of the other guide pins 20 to 22 from the lock portions 14b to 14d is prevented. That is, all the sheet storage units 4, 3, 2 cannot be pulled out from the housing 1.

As described above, in the copying machine using the lock device 10 of this embodiment, the sheet accommodating sections 2 to 4 and the opening / closing section 8 are mechanically linked to each other, and any one of the sheet accommodating sections 2 to 4 is connected. When one of the sheets is pulled out, it is prevented from pulling out another sheet accommodation section or opening the opening / closing section 8. Further, when the opening / closing section 8 is opened, all the sheet storage sections 2 to
Any withdrawal of 4 is blocked. Therefore, the center of gravity of the vertically long copying machine does not move and falls, and the safety is improved.

Further, in the lock device 10 of this embodiment, 3
If two paper storage units 2 to 4 and the opening / closing unit 8 are to be pulled out or opened at the same time, for example, if the paper storage units 2 and 3 are to be pulled out at the same time,
Two corresponding slider plates 13 and 12 fall simultaneously. As a result, both guide pins 22 and 21 are locked, and both paper storage units 2 and 3 are prevented from being pulled out.

Further, in the lock device 10 of this embodiment,
A plurality of slider plates 11 to 14 which are long in the vertical direction,
Since the lock mechanism is realized by the guide pins 20 to 24 that are displaced in the horizontal direction, the opening / closing unit 8 and the paper storage unit 2 to
4 can be mechanically interlocked with a simple configuration.

Further, in the lock device 10 of the present embodiment, the locking portions 11a-1 of the slider plates 11-14 are provided.
4a and lock parts 11b to 11d, 12b to 12d,
13b to 13d, 14b to 14d in the inclined portion 1 respectively
6, 18 are provided. Therefore, when assembling the copying machine, when the sheet accommodating sections 2 to 4 and the opening / closing section 8 are set to the housing 1, the guide pins 20 to 23 are smoothly inserted if they are pushed in, and the setting is completed very easily. .

In the locked state, the slider plate 1
By lifting each of the sheets 1 to 14, they can be easily released, and if necessary, all the sheet accommodating portions 2 to 4 can be pulled out and the opening / closing portion 8 can be opened at the same time.

The present invention has been described with reference to the examples.
The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the scope of the invention. For example, in the above embodiment, an example in which the lock device 10 is applied to a copying machine has been described, but it can be applied to any other electronic device, furniture, and the like. In addition, each slider plate 1
The shapes of the locking portion and the locking portion in 1 to 14 are not limited to those in the above-described embodiment, and are arbitrary.

[0052]

As described above, according to the lock device of the first aspect, a plurality of slide members arranged in parallel in the vertical direction corresponding to a plurality of units and a plurality of units that move according to the pulling out of the plurality of units. Since the lock mechanism is configured with the pin members of the above, when any one unit is pulled out from the housing, other units will be locked and even if you try to pull out multiple units at the same time, this will be prevented. can do. Therefore, it is possible to prevent the copying machine or the like from falling, and the safety is improved. Further, the present invention has an effect that it can be easily applied to a copying machine having an opening / closing section.

According to another aspect of the locking device of the present invention, a plurality of units are vertically stacked in a plurality of stages in the housing, and each unit is mounted so as to be horizontally drawn out from the housing, and the upper portion of the housing is mounted. Since the present invention is applied to the one having the opening / closing part rotatable about the shaft part, it is possible to surely prevent any two simultaneous drawing out including the plurality of units and the opening / closing part.

Further, according to the lock device of the third aspect, in the lock device of the first aspect, the slant portions are respectively provided at the engaging portions of the plurality of slide members and the ends of the lock portions on the pin member insertion side. Since the pin member moves smoothly, the unit can be easily attached to and detached from the housing.

[Brief description of drawings]

FIG. 1 is a side view showing the overall configuration of a copying machine equipped with a lock device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of the lock device of FIG.

FIG. 3 is a side view seen from the direction indicated by arrow A in FIG.

FIG. 4 is a side view seen from the direction shown by arrow B in FIG.

5 is a diagram for explaining the configuration of a slide plate in the locking device of FIG.

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

7 is a perspective view for explaining the operation of the lock device in FIG. 1. FIG.

8 is a perspective view showing a configuration of a connecting portion between an opening / closing portion and a lock device of the copying machine shown in FIG.

9 is a side view seen from the direction shown by arrow D in FIG.

10 is a side view showing a configuration of a connecting portion between an opening / closing portion and a lock device of the copying machine shown in FIG.

[Explanation of symbols]

1 ... Casing, 1a ... Lock case, 2-4 ... Paper storage part,
5-7 ... Guide part, 8 ... Opening / closing part (clam shell), 10
... Lock device, 11-14 ... Slider plate, 11a
-14 ... Locking parts, 11b-11d, 12b-12d, 1
3b to 13d, 14b to 14d ... Lock portion, 20 to 23
…guide pin

Claims (3)

[Claims] 1. A plurality of units that are stacked in a vertical direction in a housing and are mounted so as to be freely drawn out from the housing, and a plurality of pins that can be displaced according to the units when the plurality of units are drawn out. A member, provided corresponding to each of the plurality of units, and arranged adjacent in the housing in a vertical state, and
Each has a locking portion that is locked in a state in which the pin member of the corresponding unit is inserted, and a lock portion that corresponds to the pin member of a unit other than the corresponding unit, at different positions in the vertical direction. , When the corresponding unit is pulled out, the locked state between the locking portion and the corresponding pin member is released, and at the same time, the lock portion engages with the pin member of a unit other than the corresponding unit. Thus, the lock device is provided with a plurality of slide members that prevent the other units from being pulled out. 2. A plurality of units are vertically stacked in a housing in a multi-tiered manner, and each unit is mounted so that it can be pulled out horizontally from the housing, and the housing is openable and closable around the shaft portion at the upper part of the housing. A plurality of pin members that are provided corresponding to each of the plurality of units and the opening / closing unit and are displaceable in accordance with the pulling-out operation of the unit or the rotating operation of the opening / closing unit; A state in which the opening and closing portions are provided so as to correspond to each other, are vertically adjacent to each other in the housing, and the corresponding units or the pin members of the opening and closing portions are inserted at positions different from each other in the vertical direction. And a lock portion corresponding to the pin member of each unit other than the corresponding unit or the opening / closing unit, and the corresponding unit. When the lock portion is pulled out or the opening / closing portion is opened, the locked state between the locking portion and the corresponding pin member is released, and at the same time, the lock portion corresponds to the unit or the pin member of each portion other than the opening / closing portion. A locking device comprising: a plurality of slide members that engage with each other to prevent the other parts from being pulled out. 3. A plurality of units mounted in a housing in a multi-tiered manner in a vertical direction and each of which can be pulled out from the housing, wherein a plurality of pins that can be displaced according to the unit when the plurality of units are pulled out. A member, provided corresponding to each of the plurality of units, and arranged adjacent in the housing in a vertical state, and
Each has a locking portion that is locked in a state in which the pin member of the corresponding unit is inserted, and a lock portion that corresponds to the pin member of a unit other than the corresponding unit, at different positions in the vertical direction. , When the corresponding unit is pulled out, the locked state between the locking portion and the corresponding pin member is released, and at the same time, the lock portion engages with the pin member of a unit other than the corresponding unit. A plurality of slide members for preventing other units from being pulled out, and each of the plurality of slide members has an inclined portion at an end of the locking portion and the lock portion on the insertion side of the pin member. A characteristic locking device.