JP2003208960A - Housing drafting board of automatic electric wire connection equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing drafting board of the automatic electric-wire connection equipment in which the various kind of wire harnesses can be manufactured. <P>SOLUTION: A dummy cover 20 is provided in a housing holder 114e. Housing 2 is installed in the housing holder 10 by opening the cover part 4. If the dummy cover 20 is rotated, its side face and housing 2 form a false cavity. An insertion robot 120 can explore this false cavity, and can introduce the terminal 1a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing drawing board of an automatic wire connecting device.

[0002]

2. Description of the Related Art In general, a wire harness is an electric wiring system which constitutes a predetermined circuit network by connecting a plurality of electric wires with a connector. The connector has a resin housing and a metal terminal, and is configured so that the terminal is inserted into a cavity formed in the connector and both are locked by a so-called lance method.

When manufacturing the above wire harness,
The terminal is connected to the end of the covered electric wire, and the connected terminal is automatically inserted into the cavity of the connector housing to connect the electric wire.

An automatic electric wire connecting device for automatically performing such connecting work is provided with a terminal inserting robot for connecting terminals and a housing supply device for supplying a connector housing to the terminal inserting robot.

The housing supply device has a housing drawing board carrying a plurality of connector housings and a drawing board holder carrying the housing drawing boards. The drawing board holder is a revolver system or a slide system.
By moving the housing drawing board in a predetermined direction, it is possible to reciprocate between the housing attaching / detaching position for attaching / detaching the connector housing and the electric wire connecting position for inserting the terminal into the housing by the insertion robot. It is configured.

On the other hand, the insertion robot is for inserting the terminal connected to the electric wire into the housing supplied by the housing supply device to the housing attachment / detachment position. Usually, the tip of the terminal is inserted into the cavity of the housing. The pre-inserting step of exploring and the main inserting step of introducing the terminal having the tip inserted into the cavity into the cavity are performed.

[0007]

However, as a connector to be provided in the above-described automatic wire connecting device,
In some cases, a housing in which a cavity for inserting a terminal is divided into two is adopted. This type of housing has a main body that holds the terminals, and a cover that defines at least the terminal inlet portion of the cavity together with the main body. Since this cover part also has a retainer function for locking the terminal to the main body part, it is necessary to open the cover part (that is, open the cavity) when inserting the terminal. . As a result, even if an attempt is made to insert a terminal by providing this type of housing to the automatic wire connection device, the insertion position of the terminal cannot be determined because the cavity is in the open state in the process of pre-insertion by the insertion robot. There was a problem that the main insertion could not be performed. As a result, the type of wire harness that is automatically produced is restricted by this type of connector.

The present invention has been made in view of the above problems, and a terminal is provided in a housing having a main body for holding a terminal and a cover for defining at least a terminal inlet portion of the cavity together with the main body. When inserting a wire, it is possible to automatically insert the cavity defining the cover with the cover part left open, thus providing a housing drawing board of an automatic wire connecting device capable of manufacturing various kinds of wire harnesses. That is the issue.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is provided so as to be opposed to an insertion robot which pre-inserts the tip of the terminal into the cavity of the connector housing and then does the main insertion. A housing drawing plate for supplying a housing having a main body portion to be held and a cover portion defining at least a terminal inlet portion of a cavity together with the main body portion, wherein the main body portion of the housing is
A main body portion holder that detachably holds the cover portion so that the cavity of the housing is opened,
Between the main body part that is connected to the main body part holder and holds the main body part holder, and between the closed position that defines the terminal inlet portion of the cavity and the open position that detachably opens the housing to the main body part holder. It is a housing drawing board provided with the dummy cover which displaces by.

According to the present invention, the housing is provided so as to be opposed to the insertion robot and has the main body for holding the terminals and the cover for defining at least the terminal inlet portion of the cavity together with the main body. In doing so, the main body of the housing is locked to the main body holder with the cover opened and the inlet of the cavity opened. Further, the dummy cover provided on the main body holder, together with the main body of the held housing, defines the entrance portion of the cavity. As a result, even when the insertion robot inserts the terminal into the housing through the pre-insertion process, the main insertion step can be performed after the terminal is searched for into the entrance portion of the cavity formed by the dummy cover. The insertion operation can be performed automatically.

Another aspect of the present invention comprises a lock member for locking the housing held by the main body holder, and a lock drive member for driving the lock member between a locked state and an unlocked state, The lock member is a housing drawing plate having a cover lock portion for locking the dummy cover in the closed position.

In this aspect, the lock member that locks the main body of the housing to the main body holder can also lock the dummy cover in the closed position.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side view showing the overall structure of an automatic electric wire connecting device 100 according to an embodiment of the present invention.

Referring to FIG. 1, an automatic wire connecting device 100.
Is the housing supply device 110 and the terminal insertion robot 12.
Contains 0 and. A work space for the worker M is provided on the other end side in the horizontal direction of the terminal insertion robot 120 sandwiching the housing supply device 110. In this work space, the worker M manually attaches and detaches the connector C to and from the housing holders 114a to 114i of the housing drawing board 113.

Connector C that constitutes the wire harness W
Is supplied to the terminal insertion robot 120 via the housing supply device 110.

The terminal insertion robot 120 has a base 120a.
And the XY drive unit 1 mounted on this base 120a
20b, an insertion hand 120c driven by the XY drive unit 120b, a guide portion 121, and a pushing portion 122. This insertion hand 120c
Holds the electric wire with a terminal 1 conveyed by a conveyor (not shown), and pushes the electric wire with a terminal 1 with a pushing portion 122 while guiding the terminal with a guide portion 121, as described later in detail. It is for connecting to the connector C (see FIGS. 6A to 6C).

In the illustrated embodiment, the housing supply device 110 has a polygonal plate holder 112 rotatably installed on a pillar 111, and the plate holder 112.
Housing drawing board 113 detachably installed on each circumferential surface of the
have.

The drawing plate holder 112 has a central axis 112a.
Each housing drawing board 113 is sequentially exposed to the terminal insertion robot 120 by being rotationally driven around by a drive mechanism (not shown).

FIG. 2 is a front view showing the housing plate 113 of the automatic wire connecting device 100 of FIG. In the following description, the longitudinal direction of the housing drawing plate 113 is the left-right direction, and the upper side of the paper surface of FIG. 2 is the front.

Housing holders 114a to 114i are arranged on the housing plate 113 along the left-right direction. The housing drawing board 113 is provided with an air cylinder 115 and a drive shaft 116 driven by the air cylinder 115. The drive shaft 116 is a columnar member extending in the left-right direction along the housing drawing plate 113. The right end of the drive shaft 116 is connected to the air cylinder 115 and can be driven in the left-right direction by applying a predetermined air pressure to the air cylinder 115. Further, on the drive shaft 116, a lock member 117a is provided for each of the housing holders 114a to 114i.
117b, 117c, 117e, 117f, 117h,
117i (hereinafter referred to as 117a to 117i) are fixed. When the drive shaft 116 drives the lock members 117a to 117i, the lock members 117a to 117i are integrally driven. It is configured so that it can be a wire connection position for inserting the terminal.

FIG. 3 is a perspective view showing the housing 2 according to the first embodiment of the present invention. With reference to FIG. 3, the wire harness manufactured by the automatic electric wire connecting device 110 includes a connector with a cover. The housing 2 that constitutes this connector includes a main body 3 that holds terminals,
It has a cover part 4.

The main body 3 is a rectangular block member made of resin, and has an eave 3c protruding from one end thereof. Eaves 3c
On one surface of the terminal 1, the terminal 1 is provided along the protruding direction of the eaves 3c.
A rib 3e forming a groove 3d for introducing a is formed, and is continuous with the end surface of the main body 3. Furthermore, the main body 3
An opening 3a continuous with the groove 3d is formed in the. The groove 3d and the opening 3a are the terminals 1 of the electric wire with terminal 1.
It constitutes a cavity for inserting a.
A locking portion (not shown) is formed in the opening 3a, and when the terminal 1a is introduced into the opening 3a, the lance 1b provided in the terminal 1a is locked in the locking portion. By doing so, the terminal 1 is locked to the main body 3.

The cover portion 4 is arranged on the side of the eaves 3c facing the rib 3e, and is cantilevered to the end edge of the main body portion 3 via a hinge 4a. By rotating around the hinge 4a, the cover portion 4 has a cavity opening posture in which the terminal 1a can be introduced into the opening 3a of the body portion 3 and a cavity closing for restricting the detachment of the terminal 1a introduced into the opening 3a. It can be displaced with respect to the posture. In this cavity closing posture, the cover part 4 faces the ribs 3e of the eaves 3c with a gap and defines a cavity together with the ribs 3e. Further, in the illustrated embodiment, a recess 4c corresponding to each opening 3b is formed on the inner surface of the cover portion 4 on the base end side, and the end of the terminal 1a inserted into the opening 3b is locked by this recess 4c. By doing so, double locking is achieved. In order to lock the cover portion 4 displaced from the cavity opening posture to the cavity closing posture to the main body portion 3, the cover portion 4 has a pair of locking claws 4b formed at both ends thereof (only one is shown in FIG. 3). ) Is formed, and the main body 3 is formed with locking frame portions 3b corresponding to the locking claws 4b.

The housing 2 thus constructed is mounted on the housing holder 114e shown in FIG. 2, and the electric wire with terminal 1 is automatically connected.

FIG. 4 shows the housing holder 114e of FIG.
FIG.

Referring to FIG. 4, the housing holder 114e corresponding to the housing 2 is a main body holder 10
And the dummy cover 20 and the lock member 30 (117e)
And a cover lock section 40. The body holder 10 is composed of three metal blocks 11, 12, and 13. These three metal blocks 11, 12, 13
It is fixed to the housing drawing plate 113 in a U shape in a front view, and forms the main body accommodating portion 14. The main body housing portion 14 is arranged so that the main body portion 3 of the housing 2 can be inserted and removed.

The dummy cover 20 has a metal plate-shaped lever 21. The lever 21 is rotatably connected to the metal block 13 by a rotation shaft 22 extending in the front-rear direction. The lever 21 is provided with a locking tongue portion 21a facing rearward.

The lever 21 is connected to the rotary shaft 22 so that the housing 2 is detachably opened to the main body holder 10 (that is, the open position shown in FIG. 4).
The lever 21 can be displaced between the main body 3 of the housing 2 and a later-described closed position where the lever 21 defines the terminal inlet portion of the cavity (see FIG. 5B).

The lock member 30 is a metal rod-like member whose one end is fixed to the drive shaft 116. Further, the other end of the lock member 30 has a lock hook portion 31 for locking the mounted housing 2.

The cover lock portion 40 is a metal rod-shaped member whose one end is fixed to the drive shaft 116. on the other hand,
At the other end of the cover lock portion 40, there is provided a locking surface 41 having a sloped surface extending from the left side to the right side in a front view in a direction in which the overall length becomes shorter.

The housing holder 1 configured as described above
The worker M (FIG. 1) mounts the housing 2 on 14e.

FIG. 5 shows the housing holder 114e of FIG.
FIG. 4A is an external perspective view showing the operation of the housing, and FIG.
Is attached, and (b) shows a state in which the housing 2 is locked to the housing holder 114e.

Referring to FIG. 5A, when the housing 2 is mounted on the main body holder 10, the rear end surface of the cover portion 4 contacts the front surface of the metal block 13. In this state, the operator M moves the lever 21 clockwise by 9 in front view.
The drive shaft 116 is driven by being rotated by 0 degree and performing a predetermined operation.

Referring to FIG. 5B, the rear end surface of the lever 21 is located slightly forward of the front surface of the cover portion 4. In this position, the side of the lever 21 together with the body 3 delimits the terminal inlet of the cavity. Also, the drive shaft 11
The right side surface of the lock member 30 driven according to 6 contacts the left side surface of the main body portion 3, and the rear end surface of the lock hook portion 31 contacts the upper surface of the main body portion 3 of the housing 2. Further, the locking surface 41 of the lock member 30 driven by the drive shaft 116 contacts the locking tongue portion 21 a of the lever 21.

That is, in this state, the rear end surface of the lever 21 is fixed in the front-back direction of the cover portion 4, and the rotation direction is fixed by the locking surface 41. Also,
The housing 2 is fixed in the front-rear and left-right directions by a lock member 30. The worker M performs a predetermined operation in this state to insert the housing drawing board 113 into the terminal insertion robot 12
0, the automatic connection of the electric wire with terminal 1 to the housing 2 is started.

6A and 6B are enlarged sectional schematic views showing the terminal insertion robot 120 and the housing holder 114e according to the first embodiment of the present invention. FIG. 6A is before the insertion process of the electric wire with terminal 1, and FIG. The pre-insertion step of the electric wire with a terminal 1 and (c) show the main insertion step of the electric wire with a terminal 1, respectively.

Referring to FIG. 6A, the terminal 1a of the electric wire with terminal 1 is held by the guide portion 121. At this time, the guide portion 121 projects the tip portion of the terminal 1a by a predetermined length. Further, the covered electric wire D of the electric wire with terminal 1 is sandwiched by the pushing portion 122. In this state, the terminal insertion robot 120 moves the guide portion 121 and the pushing portion 122 holding the terminal 1a to the insertion position prestored in the control unit (not shown), and then starts the work of the pre-insertion step.

Referring to FIG. 6B, in the pre-inserting step, the terminal inserting robot 120 controls the guide portion 121 and the pushing portion 122 so that the tip portion of the terminal 1a protruding from the guide portion 121 is moved. It is introduced into the insertion position, and then the work of the main insertion process is started.

In this state, in the housing drawing plate 113 of this embodiment, the cover portion 4 of the housing 2 held by the housing holder 114e is opened and the inlet portion of the cavity (the groove 3d portion of the eaves 3c) is opened. However, the entrance of this cavity is the dummy cover 2
It is surrounded by 0 levers 21 and forms the entrance to the cavity. As a result, even when the guide portion 121 is brought close to and the terminal 1a is searched for in the pre-insertion step, the terminal 1a can be guided to the regular guide position by the lever 21.

Referring to FIG. 6C, the terminal inserting robot 120 which has completed the pre-inserting step moves to the main inserting step. In this main insertion step, the terminal insertion robot 120
The guide portion 121 is stopped at the position during the pre-insertion process, and the pushing portion 122 is moved rearward. The terminal 1a is locked to the housing 2 by the lance 1b (not shown) engaging with a locking protrusion (not shown) in the opening 3a of the housing 2.

As described above, in this embodiment, since the dummy cover 20 is provided, the cover portion 4 can be opened to form a pseudo cavity on the terminal inlet side of the housing 2 mounted on the housing holder 10. Therefore, the terminal insertion robot 120 can search for this pseudo cavity and introduce the terminal 1a. Therefore, it is possible to automatically perform the terminal insertion work which has conventionally been performed manually.

By the way, in addition to the housing 2, there are various types of housings having a main body for holding the terminals and a cover for defining the terminal entrance portion of the cavity together with the main body, and the housing 5 shown in FIG. This is an example.

FIG. 7 is a perspective view showing a housing according to the second embodiment of the present invention.

Referring to FIG. 7, the housing 5 has a main body portion 6 for holding the terminals and three cover portions 7, 8, 9.

The main body 6 has a groove 6d, ribs 6e, and an opening 6a on both sides in the longitudinal direction of the eaves 6c, and has the same structure as the housing 2 described above. Omit it.

The cover portions 7, 8 and 9 are arranged on the side of the eaves 6c which faces the ribs 3e, and the hinges 7a, 8a and 9a.
(8a and 9a are not shown) are cantilevered to the edge of the main body 6. The other structure is the same as that of the housing 2, and thus the description thereof is omitted here.

The housing 5 thus constructed is mounted on the housing holder 50 on the housing drawing board 113. FIG. 8 is an external perspective view showing a housing holder 50 according to the second embodiment of the present invention.

Referring to FIG. 8, housing holder 50
Is composed of a main body holder 60, a dummy cover 70, and a lock member 80. The main body holder 60 is composed of three metal blocks 61, 62, 63. This 3
The metal blocks 61, 62, 63 are fixed to the housing drawing plate 113 in a U-shape when viewed from the front, and form a main body accommodating portion 64. The main body housing portion 64 is arranged so that the main body portion 6 of the housing 5 can be inserted and removed.

The dummy cover 70 is made of metal and has two rectangular lid portions 71. One end of each lid 71 is connected by a connecting member 73, and is rotatably supported by the rotating shaft 72 on the convex portion 62a of the metal block 62. On the other hand, the free end of each lid 71 is open for extracting the covered electric wire D introduced between the two. Further, the free end of each lid portion 71 is provided with a locking hook portion 74 protruding in the longitudinal direction.

The dummy cover 70 is rotated around the rotation shaft 72 to open the housing 5 in a detachable manner with respect to the main body holder 60 (that is, the state shown in FIG. 8) and the housing 5. The dummy cover 70 is displaced together with the main body portion 6 between a closed position (see FIG. 9B) that defines a terminal inlet portion of the cavity.

The lock member 80 is a metal rod-like member whose one end is fixed to the drive shaft 116. On the other hand, the other end of the lock member 80 is provided with a cover lock portion 81 protruding rightward.

The housing holder 5 configured as described above
The worker M (FIG. 1) attaches the housing 5 to 0.

FIG. 9 is an external perspective view showing the operation of the housing holder 50 of FIG. 8, (a) shows a state in which the housing 5 is mounted, and (b) shows a state in which the housing 5 is locked by the housing holder 50. Are shown respectively.

Referring to FIG. 9A, when the housing 5 is attached to the main body holder 60, the cover portions 7, 8, 9 are attached.
The rear end surface abuts on the front surfaces of the metal blocks 61 and 63. In this state, the worker M operates the dummy cover 7
0 is rotated 90 degrees to the left and the drive shaft 116 is driven by a predetermined operation.

Referring to FIG. 9B, the dummy cover 7
The rear end surface of 0 abuts on the front surface of the cover portions 7, 8, 9. In this state, the facing surfaces of the respective lid portions 71 of the dummy cover 70 together with the main body portion 6 define the terminal inlet portions of the cavities. The right side surface of the lock member 80 driven by the drive shaft 116 contacts the left side surface of the main body 6. Further, the cover lock portion 81 of the lock member 80 has a rear end surface which is the locking hook portion 7 of the dummy cover 70.
Abut on the upper surface of 4. In this state, the housing holder 50 is in the closed position in which the dummy cover 70 defines the terminal inlet portion of the cavity together with the main body portion 6 of the housing 5 for inserting the terminal 1a.

The rear end face of the dummy cover 70 fixes the front and rear direction of the housing 5. The right side surface of the lock member 80 fixes the housing 5 in the left-right direction, and the cover lock portion 81 has the dummy cover 7
Fix the rotation direction of 0. The worker M performs a predetermined operation in this state so that the housing drawing board 113 faces the terminal insertion robot 120 and starts the automatic connection of the electric wire with terminal 1 to the housing 5.

10A and 10B are enlarged sectional views showing the terminal insertion robot 120 and the housing holder 50 according to the second embodiment of the present invention. FIG. 10A is before the insertion process of the electric wire with terminal 1, and FIG. The pre-insertion step of the electric wire with a terminal 1 and (c) show the main insertion step of the electric wire with a terminal 1, respectively. In addition,
Although the housing 5 has two rows of openings 6a, one of the terminal insertion robots 120
Shows only.

With reference to FIG. 10A, the electric wire with terminal 1
The terminal 1a of is inserted into the guide portion 121. At this time, the tip portion of the terminal 1a is inserted so as to protrude from the guide portion 121 by a predetermined length. Further, the covered electric wire D of the electric wire with terminal 1 is sandwiched by the pushing portion 122. In this state, the terminal insertion robot 120 moves the terminal 1a
The guide portion 121 and the pushing portion 122 holding the are moved to the insertion position prestored in the control portion (not shown), and then the work of the pre-insertion step is started.

Referring to FIG. 10B, the terminal insertion robot 120 controls the guide portion 121 and the pushing portion 122 to introduce the tip portion of the terminal 1a protruding from the guide portion 121 to the insertion position. Then, the work of the main insertion step is started.

In this state, in the housing drawing plate 113 of this embodiment, the cover portions 7, 8 and 9 of the housing 5 held by the housing holder 50 are opened and the entrance portion of the cavity (the groove 6d portion of the eaves 6c). ) Is open, the inlet portion of this cavity is surrounded by the lid portion 71 of the dummy cover 70 to form the inlet of the cavity. As a result, the terminal 1a can be guided to the regular guide position by the lid 71 even when the guide portion 121 is brought close to and the terminal 1a is searched for in the pre-insertion step.

With reference to FIG. 10C, the terminal insertion robot 120 makes the guide portion 121 stand still at the position in the pre-insertion step and moves the pushing portion 122 rearward. The terminal 1a is locked to the housing 5 by the lance 1b (not shown) engaging with a locking protrusion (not shown) in the opening 6a of the housing 5.

The housing holder 5 thus constructed
No. 0, since the dummy cover 70 is provided, the cover portions 7, 8 and 9 can be opened to form a pseudo cavity on the terminal inlet side of the housing 5 mounted on the housing holder 50. The insertion robot 120
It is possible to search for this pseudo cavity and introduce the terminal 1a. Therefore, it is possible to automatically perform the terminal insertion work which has been conventionally performed manually.

The housing 2 and the housing 5 have been described as the housing having the main body for holding the terminal and the cover for defining the terminal entrance portion of the cavity together with the main body, but the present invention is not limited to the above-mentioned embodiment. is not. For example, the housing drawing plate 113 can be used for a housing in which the main body and the cover are separate parts.

[0065]

As described above, according to the present invention,
Even when the insertion robot inserts the terminal into the housing through the pre-insertion process, the main insertion process can be performed after the terminal is searched for into the entrance of the cavity formed by the dummy cover, and the terminal insertion operation is automatically performed. Therefore, the number of types of housings that can be automatically supplied to the insertion robot is increased, and more remarkable types of wire harnesses can be manufactured.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of an automatic electric wire connecting device according to an embodiment of the present invention.

2 is a front view showing a housing plate of the automatic wire connection device of FIG. 1. FIG.

FIG. 3 is a perspective view showing a housing according to the first embodiment of the present invention.

4 is an external perspective view showing the housing holder of FIG. 2. FIG.

5 is an external perspective view showing the operation of the housing holder of FIG. 2, in which (a) is a state in which the housing is mounted, FIG.
(B) shows the state where the housing is locked to the housing holder.

FIG. 6 is an enlarged schematic sectional view showing the insertion robot and the housing holder according to the first embodiment of the present invention,
Shows a step before inserting the electric wire with a terminal, (b) shows a pre-inserting step of the electric wire with a terminal, and (c) shows a main inserting step of the electric wire with a terminal.

FIG. 7 is a perspective view showing a housing according to a second embodiment of the present invention.

FIG. 8 is an external perspective view showing a housing holder according to a second embodiment of the present invention.

9 is an external perspective view showing the operation of the housing holder shown in FIG. 8, in which (a) is a state in which the housing is mounted,
(B) shows the state where the housing is locked to the housing holder.

FIG. 10 is an enlarged schematic cross-sectional view showing an insertion robot and a housing holder according to a second embodiment of the present invention,
(A) shows the insertion step of the electric wire with terminal, (B) shows the pre-insertion step of the electric wire with terminal, and (C) shows the main insertion step of the electric wire with terminal.

[Explanation of symbols]

Electric wire with 1 terminal 1a terminal 2, 5 housing 3, 6 Main body 4, 7, 8, 9 cover part 10, 60 Body holder 20, 70 Dummy cover 30,80 Lock member 40, 81 Cover lock part 113 Housing drawing board 115 air cylinder 116 drive shaft 120 insertion robot

Claims (2)

[Claims] 1. A main body for holding a terminal, which is provided so as to be opposed to an insertion robot for preliminarily inserting a tip of a terminal into a cavity of a connector housing and then main insertion, and at least a terminal inlet of the cavity together with the main body. A housing drawing plate for supplying a housing having a cover portion defining a portion, wherein a main body portion of the housing is attachable / detachable with the cover portion opened so that a cavity of the housing is opened. The main body holder that holds the main body holder, the main body portion held by the main body holder, the closed position that defines the terminal inlet portion of the cavity, and the housing that can be attached to and detached from the main body holder A housing drawing board, comprising: a dummy cover that is displaced between an open position and an open position. 2. The housing drawing plate according to claim 1, wherein a lock member that locks the housing held by the main body holder and a lock drive member that drives the lock member between a locked state and an unlocked state. And the lock member,
A housing drawing board having a cover lock part for locking the dummy cover in the closed position.