JP2020016828A - Opening/closing device - Google Patents

Abstract

To narrow down the width of an opening to which a detection protrusion of an opening/closing part is inserted in an opening/closing device.SOLUTION: An opening/closing device (printer 1) includes: a housing 10; an operation door 20 (opening/closing part) which is attached in an openable/closable manner to the housing 10; and a detection part 30 which detects the opening/closing state of the operation door 20. The operation door 20 includes a detection protrusion 21a. The housing 10 includes a cover 11 provided with an opening 12 to which the detection protrusion 21a is inserted. The detection part 30 detects the opening/closing state of the operation door 20 on the basis of the presence/absence of the insertion of the detection protrusion 21a to the opening 12. The detection protrusion 21a (at least one of the detection protrusion 21a and the cover 11) is arranged in a slidable manner in the slide direction D2 (X direction) crossing the insertion direction D1 (Y direction) of the detection protrusion 21a to the opening 12. The cover 11 is provided with a guide part 14 guiding the detection protrusion 21a to the opening 12 in the slide direction D2 (X direction).SELECTED DRAWING: Figure 7

Description

  The present invention relates to an opening / closing device including a detection unit that detects an opening / closing state of an opening / closing unit.

  2. Description of the Related Art Conventionally, an interlock switch is disposed in a printing apparatus to detect an open / close state of an operation door. The interlock switch has, for example, a detection projection provided on an operation door and a switch that is arranged inside a housing of the printing apparatus and is pressed by the detection projection (for example, see Patent Documents 1 and 2). .

  The detection projection is inserted into an opening provided in the cover of the housing when the operation door is closed, and presses the switch. Therefore, when the switch is pressed by the detection projection, it is possible to detect that the operation door is closed. On the other hand, when the switch is not pressed by the detection projection, it can be detected that the operation door is open.

JP-A-2004-4307 JP-A-8-285183

  By the way, it is desirable that the opening into which the above-mentioned detection projection is inserted is provided with a narrow width so that a foreign substance is hard to enter.

  However, the width of the opening takes into account the influence of the dimensional tolerance of each part from the hinge that supports the opening / closing part (operating door and the like) so that it can be opened and closed to the projection for projection, and the dimensional tolerance of each part from the hinge to the opening, The width is provided sufficiently larger than the width of the detection projection.

  An object of the present invention is to provide an opening / closing device capable of reducing the width of an opening into which a detection protrusion of the opening / closing portion is inserted.

  In one aspect, an opening and closing device includes a housing, an opening and closing unit attached to the housing so as to be openable and closable, and a detection unit that detects an open / closed state of the opening and closing unit, wherein the opening and closing unit includes a detection protrusion. Wherein the housing has a cover provided with an opening into which the detection projection is inserted, and wherein the detection unit is configured to detect whether the detection projection is inserted into the opening. Detecting the open / closed state of the opening / closing part, at least one of the detection protrusion and the cover is disposed so as to be slidable in a slide direction that intersects a direction in which the detection protrusion is inserted into the opening, and is provided on the cover. Is provided with a guide portion for guiding the detection projection to the opening in the sliding direction.

  According to the above aspect, the width of the opening into which the detection protrusion of the opening / closing unit is inserted can be reduced.

FIG. 2 is a perspective view illustrating a printing apparatus. FIG. 3 is a diagram illustrating a control configuration of the printing apparatus. FIG. 4 is a plan view for explaining a positional relationship between a detection protrusion and a detection unit. It is a figure showing a slide member in a 1st embodiment. FIG. 5 is a sectional view taken along line VV of FIG. 4. FIG. 6 is a sectional view taken along line VI-VI of FIG. 4. It is an explanatory view for explaining detection of an opening and closing state of an opening and closing part in a 1st embodiment. It is explanatory drawing for demonstrating detection of the opening / closing state of the opening / closing part in 2nd Embodiment. It is explanatory drawing for demonstrating detection of the opening / closing state of the opening / closing part in 3rd Embodiment.

Hereinafter, a printing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view illustrating the printing apparatus 1.

FIG. 2 is a diagram illustrating a control configuration of the printing apparatus 1.
FIG. 3 is a plan view for explaining the positional relationship between the detection projection 21a and the detection unit 30.

  The X direction, the Y direction, and the Z direction shown in FIGS. 1 and 3 and FIGS. 4 to 9 described below are given as examples for convenience of description, and the Y direction is the detection direction shown in FIG. The X direction is the slide direction D2 of the slide member 21 (the detection protrusion 21a) when the operation door 20 is closed, and the Z direction is the vertical direction. . The X, Y, and Z directions are orthogonal to each other.

  As shown in FIG. 1, the printing apparatus 1 includes a housing 10, an operation door 20, which is an example of an opening / closing unit, a detection unit 30, an input unit 60, and a display unit 70. As shown in FIG. 2, the printing apparatus 1 further includes a control unit 40, a storage unit 50, a printing unit 80, and a transport unit 90.

  Note that the printing apparatus 1 is an example of an apparatus to which an opening and closing device is applied. The opening / closing device is not limited to the opening / closing device applied to the printing apparatus 1 as long as it includes the housing 10, the operation door 20 (opening / closing unit), and the detection unit 30. For example, when the opening and closing device is applied to an apparatus other than the printing apparatus 1, the housing 10 accommodates not the printing unit 80 but other units. The housing 10 houses each unit such as the detection unit 30, the control unit 40, the storage unit 50, the printing unit 80, and the transport unit 90. However, the housing 10 according to the present embodiment is not limited to the housing 10 having the entire size of the printing apparatus 1 as long as an opening / closing unit, for example, the operation door 20 is attached so as to be openable and closable. . Further, the housing target of the housing 10 is not particularly limited.

  As shown in FIGS. 1 and 3, the operation door 20 is attached to the housing 10 so as to be openable and closable by, for example, a pair of upper and lower hinges 13. That is, the operation door 20 pivots between the open state shown in FIG. 1 and the closed state shown in FIG.

  The operation door 20 can be manually opened and closed by a user to replace consumables such as ink, or a maintenance person can manually open and close the housing 10 for inspection and repair. It is for opening the inside of. However, as the opening / closing unit, the operation door 20 being an example, any unit that can be attached to the housing 10 so as to be openable / closable may be attached to another position.

  The operation door 20 has a slide member 21 disposed on a surface facing the housing 10 in a closed state. The slide member 21 has a detection projection 21a. An opening 12 into which the detection projection 21a is inserted is provided in the cover 11 arranged so as to cover the detection unit 30 in a portion of the housing 10 facing the operation door 20. The detection projection 21a and the opening 12 will be described later.

  As illustrated in FIG. 3, the detection unit 30 includes a switch button 31 and a pressed part 32. The switch button 31 is pressed by the detection projection 21a via a pressed portion 32 having a thin plate shape, for example. The detection unit 30 detects the open / closed state of the operation door 20 based on whether the switch button 31 is pressed by the detection protrusion 21a, that is, whether the detection protrusion 21a is inserted into the opening 12.

  Note that the detection unit 30 is not limited to a push-type switch having the switch button 31. For example, a light-blocking sensor that detects the open / closed state of the operation door 20 based on whether the detection light is blocked by the detection protrusion 21 a is used. May be another detection unit.

  The control unit 40 illustrated in FIG. 2 includes a processor (for example, a central processing unit (CPU)) that functions as an arithmetic processing device that controls the operation of the entire printing apparatus 1. The processor controls the operation of each unit of the printing apparatus 1 by reading and executing a predetermined program. For example, the control unit 40 acquires the detection signal of the detection unit 30 and stops the operations of the printing unit 80, the conveyance unit 90, and the like when the detection signal indicates that the operation door 20 is open.

  The storage unit 50 is, for example, a read-only memory (ROM), which is a read-only semiconductor memory in which a predetermined program is recorded in advance, and is used as a work storage area as needed when the control unit 40 executes various programs. A random access memory (RAM), which is a semiconductor memory that can be written and read at any time, and a hard disk device are used.

  As illustrated in FIG. 1, the input unit 60 includes a plurality of buttons such as a power button, a numeric keypad, and the like, and receives input of various types of operation information by a user. The input unit 60 may be a touch panel arranged on the display unit 70.

  The display unit 70 is a display that displays various information such as a display screen for a user input operation. In the example of FIG. 1, the input unit 60 and the display unit 70 are provided integrally, and are arranged on the upper right side of the front of the housing 10.

  The printing unit 80 performs printing on a printing medium. The printing method of the printing unit 80 is, for example, an inkjet printing method, a stencil printing method, or the like, but is not particularly limited.

  The transport unit 90 transports the print medium.

<First embodiment>
FIG. 4 is a diagram illustrating the slide member 21 according to the first embodiment.
FIG. 5 is a sectional view taken along line VV of FIG.
FIG. 6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is an explanatory diagram for describing detection of the open / closed state of the operation door 20.
FIG. 7 schematically shows the slide member 21 shown in FIG.

  As shown in FIG. 4, the slide member 21 has an elongated thin plate shape whose longitudinal direction coincides with the slide direction D2 (X direction) shown in FIG. At the center of the slide member 21 in the slide direction D2 (X direction), a detection protrusion 21a inserted into the opening 12 is provided.

  The detection projection 21a projects in the insertion direction D1 (Y direction) into the opening 12 shown in FIG. The detection projection 21a is a plate-shaped member having a thickness direction that matches a slide direction D2 (X direction) orthogonal to the insertion direction D1 (Y direction). Although the detection protrusion 21a is provided integrally with the slide member 21, a member separate from the slide member 21 may be fixed to the slide member 21.

  As shown in FIGS. 4 and 5, a total of four triangular plate-shaped reinforcing portions 21a-1 are provided on both ends in the Z direction of the detection projection 21a on both sides in the sliding direction D2 (X direction). Have been. Therefore, as shown in FIG. 4, the detection protrusion 21a has an I-shape or an H-shape when viewed from the insertion direction D1 (Y direction). The detection projection 21a may be a rod-shaped member, a needle-shaped member (pin) whose longitudinal direction coincides with the insertion direction D1 (Y direction), and the shape is not particularly limited.

  On both sides of the slide member 21 in the slide direction D2 (X direction) with the detection protrusion 21a interposed therebetween, a concave portion 21b recessed in the opposite direction to the insertion direction D1 (Y direction) is provided. A long hole 21c penetrating the slide member 21 in the insertion direction D1 (Y direction) is formed in a part of each of the concave portions 21b on both sides. The longitudinal direction of the long holes 21c, 21c coincides with the sliding direction D2 (X direction).

  A stepped screw 22 is inserted into the slide member 21 in each of the two long holes 21c.

  As shown in FIGS. 5 and 6, the stepped screw 22 has a head 22a, a step 22b, and a screw 22c.

  The diameter of the stepped screw 22 decreases in the order of the head 22a, the step 22b, and the screw 22c. The screw 22c is fixed to the door body 20a (an example of an opening / closing body). It is in contact with the main body 20a.

  As shown in FIG. 6, the diameter of the step portion 22b is such that the slot 21c does not hinder the slide movement of the slide member 21 in the slide direction D2 (X direction) and the slide member 21 does not slide in the Z direction. Is shorter than the width in the Z direction. The bottom surface of the head portion 22a is positioned with a gap between the bottom surface of the concave portion 21b and the slide member 21 so as not to hinder the slide movement in the slide direction D2 (X direction). The diameter of the head 22a is shorter than the width of the recess 21b in the Z direction.

  With the above-described configuration, when the operation door 20 is closed, the slide member 21 slides in the slide direction D2 (X direction) by the detection protrusion 21a being guided by the guide portion 14 described later illustrated in FIG. . The range in which the slide member 21 can slide is a range in which the position of the long hole 21c can be changed with respect to the immovable stepped screw 22 inserted into the long hole 21c.

  Although the configuration using the stepped screw 22 and the long hole 21c has been described as an example of the configuration for enabling the slide member 21 (the detection protrusion 21a) to be slidable, the slide member 21 is not limited to the door body 20a. In a state where the sliding member 21 and the door main body 20a are engaged with each other in a state where the sliding member 21 and the door main body 20a are attached to each other by a snap fit (for example, a state in which a claw provided on one side is engaged with the other), By providing a gap, a configuration in which the slide member 21 can slide in the slide direction D2 (X direction) may be employed. Alternatively, another configuration such as a configuration in which the slide member 21 can slide on a rail provided on the door main body 20a may be adopted.

  The direction in which the slide member 21 (the detection protrusion 21a) slides is not limited to a single direction (X direction), but may be freely slid in an XZ plane orthogonal to the insertion direction D1 (Y direction). Good. In order to allow the detection projection 21a to freely slide in the XZ plane in this manner, for example, as described above, the slide member 21 is attached to the door main body 20a by snap-fitting to the engagement portion. What is necessary is just to employ | adopt the structure etc. which provide the clearance gap of a X direction and a Z direction.

  As shown in FIG. 7, the cover 11 of the housing 10 is provided with guide portions 14 for guiding the detection projection 21a to the opening portion 12 in the sliding direction D2 (X direction). The guide portions 14 are provided on both sides of the opening 12 in the slide direction D2 (X direction) of the slide member 21. The guide portions 14 have an inclination θ with respect to the insertion direction D1 (Y direction), so that the distance between the guide portions 14 gradually decreases from the operation door 20 side toward the opening 12 (width W1) side.

  The guide portion 14 is, for example, an inclined portion in which a portion of the cover 11 adjacent to the opening 12 is bent toward the detection unit 30. The guide portion 14 has a flat plate shape, but may have a curved plate shape.

  As described above, in the sliding direction D2 (X direction) of the slide member 21, the guide portions 14 are provided on both sides of the opening portion 12, so that when the operation door 20 is closed, the detection protrusion 21a is moved to one side. Is guided by the guide portion 14, and is inserted into the opening 12 while sliding in the sliding direction D2 (X direction). As a result, the detection projection 21a can press the switch button 31 via the pressed portion 32.

  When viewed from the operation door 20 side in the insertion direction D1 (Y direction), the opening 12 has a rectangular width W1 in the sliding direction D2 (X direction) smaller than the width in the Z direction as shown in FIG. Take shape. If the detection projection 21a is slidable in the Z direction and a guide portion for guiding the detection projection 21a to the opening 12 in the Z direction is provided, the opening 12 The width W1 of the opening 12 in the Z direction can be reduced in the same manner as the width W1 in the sliding direction (X direction) can be reduced. However, in the present embodiment, a configuration in which the width W1 in the slide direction (X direction) having a smaller width is further reduced is described as an example.

  Further, in the above-described example, the aspect has been described in which the detection protrusion 21a is provided on the slide member 21 so that the detection member 21 slides in the slide direction D2 (X direction) integrally with the slide member 21. ) May be arranged to be slidable in the sliding direction D2 (X direction). In this case, the cover 11 can be slid with respect to other covers by the configuration using the stepped screw 22 and the elongated hole 21c, the configuration using the snap fit, the configuration using the rail, or the like as described above. It is good to be arranged in.

  In the first embodiment described above, the opening / closing device (printing device 1) includes the housing 10, the operation door 20 as an example of an opening / closing unit attached to the housing 10 so as to be able to open and close, and the operation door 20. A detection unit 30 that detects an open / closed state. The operation door 20 has a detection projection 21a. The housing 10 has a cover 11 provided with an opening 12 into which the detection projection 21a is inserted. The detection unit 30 detects the open / closed state of the operation door 20 based on whether or not the detection projection 21a is inserted into the opening 12. The detection protrusion 21a (an example of at least one of the detection protrusion 21a and the cover 11) slides in a slide direction D2 (X direction) crossing the insertion direction D1 (Y direction) of the detection protrusion 21a into the opening 12. It is arranged movably. The cover 11 is provided with guide portions 14 for guiding the detection protrusion 21a to the opening 12 in the sliding direction D2 (X direction).

  As described above, in the first embodiment, the detection protrusion 21a is slidably disposed in the slide direction D2 (X direction) crossing the insertion direction D1 (Y direction), and the guide portion 14 is 21a is guided to the opening 12 in the sliding direction D2 (X direction). Therefore, the dimensional tolerance of each part from the hinge 13 to the detection projection 21a and the positional deviation of the detection projection 21a from the opening 12 caused by the dimensional tolerance of each part from the hinge 13 to the opening 12 are determined. It can be absorbed by sliding movement. Thus, the width W1 of the opening 12 can be determined based on the width and the tolerance of the width of the detection projection 21a and the tolerance of the width W1 of the opening 12. Therefore, according to the present embodiment, the width W1 of the opening 12 into which the detection protrusion 21a of the operation door 20 is inserted can be reduced. Further, since the width W1 of the opening 12 can be reduced in this manner, it is possible to make it difficult for foreign matter to enter the opening 12. Furthermore, since the guide 14 guides the detection projection 21a to the opening 12 in the sliding direction D2 (X direction), the detection projection 21a can be reliably inserted into the opening 12.

  In the first embodiment, the detection projection 21a is a plate-like member having a thickness direction (X direction) intersecting with the insertion direction D1 (Y direction), and the slide direction D2 (X direction) is a plate-like member. This is the thickness direction (X direction) of the member.

<Second embodiment>
FIG. 8 is an explanatory diagram for describing detection of the open / closed state of the operation door 20 in the second embodiment.

  In the second embodiment, the point where the tension spring 23 which is an example of the elastic body urges the detection projection 21a in the urging direction D3 which is the slide direction D2 (X direction), and the guide portion 14 is formed in the opening 12 The third embodiment differs from the first embodiment in that the tension spring 23 is provided only on the biasing direction D3 side of the tension spring 23. Other configurations can be the same as those in the first embodiment, and thus detailed description is omitted.

  As shown in FIG. 8, one end of the tension spring 23 is attached to a spring attachment member 24 fixed to the door body 20a. The other end of the tension spring 23 is attached to the slide member 21. Thereby, the slide member 21 is pulled by the tension spring 23 in the urging direction D3 which is one of the slide directions D2 (X direction).

  The guide portion 14 is provided only on the biasing direction D3 side of the tension spring 23 with respect to the opening portion 12. A non-inclined portion 15 is provided on the opposite side of the opening 12 from the urging direction D3 instead of the guide portion 14 shown in FIG. The non-inclined portion 15 has, for example, a flat plate shape that is not inclined with respect to the insertion direction D1 (Y direction).

  Since the slide member 21 is urged in the urging direction D3 by the tension spring 23, when the operation door 20 is closed, the detection projection 21a is located closer to the urging direction D3 than the opening 12; As a result of being guided by the guide portion 14, it is inserted into the opening 12 while sliding in the direction D <b> 4 opposite to the biasing direction D <b> 3 against the biasing force of the tension spring 23. As a result, the detection projection 21a can press the switch button 31 via the pressed portion 32.

  In the example shown in FIG. 8, the guide portion 14 is provided only on the biasing direction D3 side with respect to the opening portion 12, but instead of the non-inclined portion 15, for example, according to the shape of the detection projection 21a. An inclined surface (guide portion) inclined with respect to the insertion direction D1 (Y direction) may be provided. The inclined surface is inclined with respect to the insertion direction D1 (Y direction) such that the distance from the operation door 20 toward the opening 12 (width W1) gradually decreases from the operation door 20 to the guide portion 14. However, the guide portion 14 provided on the biasing direction D3 side with respect to the opening portion 12 has an insertion direction D1 as compared with the inclined surface provided on the opposite side to the biasing direction D3 with respect to the opening portion 12. (Y direction) may be provided to be large.

  Further, in the case where the mode in which the cover 11 slides in place of the slide member 21 (both the slide member 21 and the cover 11 may slide) as described above, is adopted, the tension spring 23 slides. Instead of the member 21, the cover 11 may be urged in the sliding direction D2 (X direction).

  In the second embodiment described above, the same effect as in the first embodiment is obtained for the same configuration as the first embodiment, that is, the width of the opening 12 into which the detection projection 21a of the operation door 20 is inserted. It is possible to obtain such an effect that W2 can be narrowed.

  In the second embodiment, the opening / closing device (printing device 1) is an elastic body that urges the detection projection 21a (an example of one of the detection projection 21a and the cover 11) in the sliding direction D2 (X direction). Further, a tension spring 23 is provided as an example. Further, the guide portion 14 is provided only on the biasing direction D3 side of the tension spring 23 with respect to the opening portion 12 or on the side opposite to the biasing direction D3 on the biasing direction D3 side with respect to the opening portion 12. It is provided so that the inclination is greater than the insertion direction D1 (Y direction). As described above, since the slide member 21 is urged in the urging direction D3 by the tension spring 23, only the guide portion 14 closer to the urging direction D3 than the opening 12 moves the detection protrusion 21a to the opening 12. Can guide you. Therefore, as compared with the embodiment in which the guides 14 are provided on both sides of the opening 12 as in the first embodiment, not only the width W2 of the opening 12 but also the insertion opening (guide The width of the portion 14 (the end on the side of the operation door 20) can also be reduced.

<Third embodiment>
FIG. 9 is an explanatory diagram for describing detection of the open / closed state of the operation door 20 in the third embodiment.

  The third embodiment is different from the above-described second embodiment only in that a compression spring 25 is disposed in place of the tension spring 23 as an example of an elastic body, and other configurations are the same as those in the first embodiment or the third embodiment. This can be the same as in the second embodiment. Therefore, detailed description is omitted.

  As shown in FIG. 9, one end of the compression spring 25 is attached to a spring attachment member 26 fixed to the door body 20a. The other end of the compression spring 25 is attached to the slide member 21. Thereby, the slide member 21 is pressed by the compression spring 25 in the urging direction D5 which is one of the slide directions D2 (X direction).

  The guide portion 14 is provided only on the biasing direction D5 side of the compression spring 25 with respect to the opening portion 12, as in the second embodiment.

  Since the slide member 21 is urged in the urging direction D5 by the compression spring 25, when the operation door 20 is closed, the detection projection 21a is located closer to the urging direction D5 than the opening 12; As a result of being guided by the guide portion 14, the compression spring 25 is inserted into the opening 12 while sliding in the direction D6 opposite to the urging direction D5 against the urging force of the compression spring 25. As a result, the detection projection 21a can press the switch button 31 via the pressed portion 32.

  As described in the second embodiment, in a case where the cover 11 slides instead of the slide member 21 (both the slide member 21 and the cover 11 may slide), The compression spring 25 may bias the cover 11 in the slide direction D2 (X direction) instead of the slide member 21.

  In the third embodiment described above, the same effects as those in the first embodiment or the second embodiment, that is, the detection protrusions 21a of the operation door 20 are provided for the same configuration as the first embodiment or the second embodiment. Can be obtained, for example, the width W3 of the opening 12 into which is inserted can be reduced.

  It should be noted that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying constituent elements without departing from the scope of the invention at the stage of implementation. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, all components described in the embodiments may be appropriately combined. Of course, various modifications and applications are possible without departing from the spirit of the invention. Hereinafter, the inventions described in the claims at the time of filing the application of the present application are additionally described.

[Appendix 1]
A housing,
An opening and closing unit attached to the housing so as to be openable and closable,
A detection unit that detects the open / closed state of the opening / closing unit,
The opening and closing unit has a detection projection,
The housing has a cover provided with an opening into which the detection protrusion is inserted,
The detection unit detects an open / closed state of the opening / closing unit based on whether or not the detection protrusion is inserted into the opening,
At least one of the detection protrusion and the cover is disposed so as to be slidable in a slide direction that intersects a direction in which the detection protrusion is inserted into the opening,
The cover is provided with a guide portion for guiding the detection protrusion to the opening in the sliding direction.

[Appendix 2]
An elastic body for urging one of the detection protrusion and the cover in the slide direction,
The guide portion is provided only on the biasing direction side of the elastic body with respect to the opening, or the guide portion is inserted on the biasing direction side of the opening more than on the side opposite to the biasing direction. The switchgear according to claim 1, wherein the switchgear is provided so as to have a large inclination with respect to the direction.

DESCRIPTION OF SYMBOLS 1 Printing apparatus 10 Housing 11 Cover 12 Opening 13 Hinge 14 Guide part 15 Non-inclined part 20 Operation door 20a Door main body 21 Slide member 21a Detection projection 21a-1 Reinforcement part 21b Concave part 21c Long hole 22 Step screw 22a Head 22b Step portion 22c Screw portion 23 Tension spring 24 Spring attachment member 25 Compression spring 26 Spring attachment member 30 Detector 31 Switch button 32 Pressed portion 40 Control unit 50 Storage unit 60 Input unit 70 Display unit 80 Printing unit 90 Transport unit

Claims (2)

A housing,
An opening and closing unit attached to the housing so as to be openable and closable,
A detection unit that detects the open / closed state of the opening / closing unit,
The opening and closing unit has a detection projection,
The housing has a cover provided with an opening into which the detection protrusion is inserted,
The detection unit detects an open / closed state of the opening / closing unit based on whether or not the detection protrusion is inserted into the opening,
At least one of the detection protrusion and the cover is disposed so as to be slidable in a slide direction that intersects a direction in which the detection protrusion is inserted into the opening,
The cover is provided with a guide portion for guiding the detection protrusion to the opening in the sliding direction. An elastic body for urging one of the detection protrusion and the cover in the slide direction,
The guide portion is provided only on the biasing direction side of the elastic body with respect to the opening, or the guide portion is inserted on the biasing direction side of the opening more than on the side opposite to the biasing direction. The opening / closing device according to claim 1, wherein the opening / closing device is provided so as to have a large inclination with respect to the direction.