JP4499047B2 - Lid opening / closing mechanism - Google Patents

Description

  The present invention relates to a lid opening / closing mechanism in which a lid that is rotatably supported by a housing rotates between a position that covers an opening formed in the housing and an open position that exposes the opening.

  In recent years, portable electronic devices such as digital cameras have become widespread. In such an electronic device, a battery such as a secondary battery is used as a power source, and the battery is loaded in the device body. For this reason, the electronic device as described above is provided with a lid for inserting and removing the battery into and from the device main body.

As such a lid opening / closing mechanism, a lid that covers an opening formed in the housing is provided, and the lid covers the opening and is locked by the housing to prevent rotation, and locking by the housing. It is known that the slide operation is performed between the release position and the release position where the opening is released, and the position is rotated to the open position through which the opening is exposed (see, for example, Patent Documents 1 to 4). The lid opening / closing mechanisms described in Patent Documents 1 to 4 include a mechanism that slides the lid to a position protruding from the outside of the housing, and a lock mechanism that prohibits rotation of the lid. In this lid opening / closing mechanism, when the lid is slid so as to protrude to the outside of the housing, the lock by the lock mechanism is released and the lid can be opened.
JP-A-6-89710 Japanese Patent Laid-Open No. 10-3893 JP 2003-142841 A JP 2004-79543 A

  However, in the lid opening / closing mechanism described in Patent Documents 1 to 4, since the lid is slid so as to protrude outside the housing, it is necessary to form a split line of the lid on the two surfaces of the housing. There are problems that the processing of the case member constituting the structure is complicated and cost is high, and that the lock mechanism is easily broken due to an impact such as dropping because the lock mechanism is disposed at the corner of the housing.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a lid opening / closing mechanism that is not easily broken even when an impact is applied due to dropping or the like at a low cost.

In order to solve the above-mentioned problems, the lid opening / closing mechanism of the present invention covers an opening formed on one surface of the casing and is locked by the casing to prevent rotation, and locking by the casing. Is a lid opening / closing mechanism that is slid between the release position and the release position where the opening is released, and rotates to an open position that exposes the opening through the release position. The lid slides from the lock position to the release position. when it is provided with a rotating mechanism for rotating the lid ends as a fulcrum of the slide direction, the lid, the as slides in one side, held by the housing, the pivot The mechanism is provided on one of the end portion or the housing and is provided with a rotation shaft disposed so as to be orthogonal to the sliding direction of the lid, and is provided on the other side and formed along the sliding direction. Both ends of the shaft A torsion spring that is inserted through the pivot shaft and biases the lid from a position covering the opening toward the open position, and one end of the torsion spring Is in contact with the inner surface of the lid, the other end is in contact with the housing, and the one end or the other end is in sliding contact when the lid moves between the lock position and the release position. The slidable contact surface is inclined so that the distance between the lid and the holding portion increases as going to the rotating shaft side . Further, a protrusion formed on the inner surface side of the lid and a protrusion formed on the housing, which locks the protrusion when the lid is moved to the lock position, and retracts from the protrusion when the lid is moved to the release position. And when the lid is moved from the open position to a position that covers the opening in a state where the lid is on the lock position side of the release position, It is preferable that the abutting surfaces that are in contact with each other are inclined so that the distance from the lid increases as going to the rotating shaft side.

  Another lid opening and closing mechanism of the present invention includes a lock position that covers an opening formed on one surface of the housing and is locked by the housing and is prohibited from rotating, and a release position that is unlocked by the housing. Is a lid opening / closing mechanism that is rotated to an open position that exposes the opening through the release position, and the slide is moved when the lid is slid from the lock position to the release position. A pivot mechanism that pivots the lid with a direction-side end as a fulcrum; the lid is held by the housing so as to slide and move within the one surface; Alternatively, a rotation shaft provided on one side of the housing and arranged to be orthogonal to the sliding direction of the lid, and provided on the other side, formed along the sliding direction, and engaged with both ends of the rotation shaft. Two lengths combined And a protrusion formed on the inner surface side of the lid, and formed on the housing, locking the protrusion when the lid is moved to the lock position, and when the lid is moved to the release position A locking protrusion that retracts from the protrusion, and the protrusion and the engagement when the cover is moved from the open position to a position that covers the opening in a state where the cover is closer to the lock position than the release position. The contact surfaces with which the stop projections are in contact with each other are inclined so that the distance from the lid widens toward the rotation shaft side.

  Furthermore, provided at a position adjacent to the opening on the rotating shaft side, and a locking claw for locking the load loaded in the opening, the locking claw is directed toward the center of the opening. It is preferable to be urged so as to protrude and to be slidable in a direction to retract from the opening toward the rotating shaft.

  Further, a click protrusion formed on the inner surface side of the lid or one of the housings and the other is provided on the other side, and the click protrusion is locked when the lid is in the lock position to resist sliding operation of the lid. And a click locking means for releasing the locking with the click projection when the sliding operation is performed by overcoming this resistance, and urging the lid toward the open position. preferable.

  According to the lid opening / closing mechanism of the present invention, when the lid is slid from the lock position to the release position, the lid is provided with a rotation mechanism that rotates the lid with the end portion on the sliding direction side as a fulcrum. Since the lid rotates with the end portion in the direction of sliding operation when opening the fulcrum as a fulcrum, operability is good. In addition, since the lid is slidable in one plane, the lock mechanism that prohibits the opening of the lid is not placed at the corner of the housing, so it can be locked even if an impact is applied to the housing due to dropping etc. There is little risk of damage to the mechanism. In addition, it is only necessary to form the lid split line only on one side, so it is easy to process the housing, reducing the manufacturing cost, and the lid split line is formed only on one side, so the appearance design is also improves.

  In addition, a locking claw is provided at a position adjacent to the opening on the rotating shaft side, and locks the load loaded in the opening, and the locking claw projects toward the center of the opening. Because it is slidable in the direction of retreating from the opening to the rotating shaft side, there is a locking claw on the side that is slid when opening the lid, and the operation direction is common, so operability is improves.

  In addition, a click locking means that locks the click protrusion and gives resistance to the sliding operation of the lid is provided. The click locking means is released from the locking with the click protrusion by the sliding operation of the lid. Urge the lid toward the open position. For this reason, since the lid is automatically opened, the operability is improved.

  Further, when the lid moves between the lock position and the release position, the distance between the lid and the holding portion increases as the sliding contact surface to which one end or the other end of the torsion spring comes into sliding contact with the rotating shaft side. Therefore, when a force is applied in the direction of closing the lid, no force is applied in the direction of moving to the lock position side. For this reason, the operation | movement which applies force toward the cancellation | release position side is unnecessary, and since a lid | cover can be moved to the cancellation | release position by one operation | movement, operativity improves.

  Further, when the lid is moved from the open position to the position covering the opening while the lid is on the lock position side from the release position, the contact surface on which the protrusion and the locking protrusion come into contact with each other is on the rotating shaft side. Since it is inclined so that the distance from the lid increases as it goes, after the projection and the locking projection abut, if a force is further applied in the direction of closing the lid, the lid moves to the release position side. A force is applied in the direction in which the force is applied, and an operation for applying the force with the lid facing the release position is not required. For this reason, since the lid can be moved to the release position by one operation, the operability is improved.

  A digital camera 10 shown in FIG. 1 is configured by incorporating various photographing mechanisms in a camera body 11 which is a substantially rectangular parallelepiped casing. The camera body 11 includes a front cover 11a and a rear cover 11b.

  A front surface of the camera body 11 is provided with a lens barrel 13 in which a photographing lens 12 is incorporated, a strobe light emitting unit 14 that emits strobe light toward a subject, and a grip unit 15. Further, on the upper surface of the camera body 11, a shutter button 16 that is pressed when shooting is performed, a mode dial 17 that is rotated when switching modes, and a power button 18 that is pressed when turning on / off the power supply. And are provided. Further, on the back of the camera body 11, an LCD (not shown) for displaying images and various setting screens, and an operation unit (see FIG. 2) 19 that is operated when performing various operations and includes a plurality of buttons, and Is provided.

  In addition to the various photographing mechanisms, a storage unit (see FIG. 3) 30 described later is incorporated in the camera body 11, and is sandwiched between the front cover 11a and the rear cover 11b. As shown in FIG. 2, a lid 31 constituting the storage unit 30 is provided on the lower surface of the camera body 11. The lid 31 is opened and closed when a battery and a memory card loaded in the camera body 11 are inserted and removed.

  The lid opening / closing mechanism of the present invention includes a lid 31 and a holding portion 32 that holds the lid 31 so as to be rotatable and slidable. As shown in FIG. 3, the storage unit 30 includes a unit main body 40 that is a substantially rectangular parallelepiped housing and a lid 31. The unit main body 40 drives each part in the camera main body 11. A battery (see FIG. 3) 41 as a power source and a memory card (see FIG. 3) 44 as a recording medium for storing image data are housed.

  The above-described holding portion 32 is a recess formed in the lower portion of the unit body 40. As shown in FIG. 4, the holding portion 32 is larger than the outer shape of the lid 31, and a space is formed so that the lid 31 can slide in the direction of arrow A within the holding portion 32. The holding portion 32 is adjacent to the inner wall surface 32a and is locked to a lock position (a position shown in FIG. 4A) that is prohibited from being rotated by a lock mechanism described later, and adjacent to the inner wall surface 32b and unlocked by the lock mechanism. It is slidably held between the released position (the position shown in FIG. 4B). For this reason, the lid 31 is slid inside the surface adjacent to the lower surface of the camera body 11.

  Further, when the lid 31 is slid from the lock position to the release position, the lid 31 is rotated by the rotation mechanism with the end portion on the slide direction side as a fulcrum. As will be described later, this rotation mechanism is composed of a rotation shaft 51 and a long hole 52. Below, this rotation mechanism is demonstrated.

  The lid 31 is provided with a rotating shaft 51 at one end. In addition, two long holes 52 are formed in the holding portion 32 along the sliding direction (arrow A direction) of the lid 31 on the side wall adjacent to the inner wall surface 32b. Both ends of the rotation shaft 51 are engaged with two elongated holes 52, and the lid 31 is held by the holding portion 32 so as to be slidable in the arrow A direction and to be rotatable in the arrow B direction.

  The holding portion 32 includes a battery insertion port 43 that is an opening for inserting the battery 41 into the battery chamber 42 in the unit main body 40 on the facing surface 32c that faces the inner surface 31a of the lid 31 when the lid 31 is closed. A card insertion slot 45 that is an opening for inserting the memory card 44 is formed. Further, a locking claw 46 for preventing the battery 41 from dropping out of the battery chamber is provided at a position adjacent to the battery insertion port 43 on the rotating shaft 51 side. The locking claw 46 is fixed to the tip of the leaf spring 47 and is movable in the sliding direction of the lid 31 (arrow A direction).

  The lid 31 is prohibited from turning by the lock mechanism at the lock position (position shown in FIG. 4A). As will be described later, this lock mechanism is constituted by a protrusion, and a locking hole and a locking protrusion for locking the protrusion. Hereinafter, this locking mechanism will be described.

  Three protrusions 54 to 56 are formed on the outer peripheral portion of the lid 31. When the lid 31 is in the locked position (the position shown in FIG. 4A), the protrusion 54 is inserted and locked in the locking hole 61 formed in the inner wall surface 32 a of the holding portion 32. Rotation is prohibited. Further, when the lid 31 is moved to the release position (the position shown in FIG. 4B), the projection 54 is retracted from the locking hole 61, and the locking by the locking hole 61 is released, so that the lid 31 It can be turned.

  Further, when the lid 31 is in the locked position (position shown in FIG. 4A), the protrusion 55 is locked by a locking protrusion (not shown) formed on the inner wall surface 32d of the holding portion. The rotation of 31 is prohibited. Further, when the lid 31 is moved to the release position (position shown in FIG. 4B), the projection 55 is retracted from the engagement projection, the engagement is released, and the lid 31 can be rotated. It becomes.

  As shown in FIG. 5, a locking projection 62 and an opening 63 are formed on the facing surface 32 c of the holding portion 32 at a position corresponding to the projection 56. When the lid 31 is in the locked position (the position shown in FIG. 4A), the protrusion 56 is locked by the locking protrusion 62 as shown in FIG. Is prohibited. When the lid 31 is moved to the release position (the position shown in FIG. 4B), the projection 56 is retracted to the opening 63 side as shown in FIG. The locking by is released, and the lid 31 can be rotated.

  Further, as shown in FIG. 3, the protrusion 56 is disposed at a position closer to the fulcrum (the rotation shaft 51) than the protrusions 54 and 55, and the rotation shaft 51 is located within the elongated hole 52 from the release position. When the lid 31 is rotated in the closing direction in the state at the lock position side (for example, the state shown in FIG. 5C), the projection 56 and the locking projection 62 first come into contact with each other.

  The contact surfaces 56a and 62a with which they are in contact with each other are each formed as a slope so that when a force is applied in the direction in which the lid 31 is closed, a force is applied to the lid in the direction of arrow C. That is, the contact surface 62a of the locking projection 62 is inclined so that the distance from the lid 31 becomes wider toward the rotation shaft 51, and the contact surface 56a of the projection 56 is the contact surface 62a. It is inclined so as to be substantially parallel when it comes into contact. For this reason, when the lid 31 is closed in the state shown in FIG. 5C, a force acts in the direction of the arrow D, and the lid 31 moves to the release position shown in FIG.

  Further, a torsion spring 53 is inserted through the above-described rotation shaft 51. One end 53a of the torsion spring 53 is in contact with the back surface 31a of the lid 31, and the other end 53b is in contact with the facing surface 32c. For this reason, the lid 31 is urged by the torsion spring 53 toward the open position shown in FIG.

  Therefore, when the lid 31 is slid from the lock position (position shown in FIG. 4A) to the release position (position shown in FIG. 4B), the lid 31 is shown in FIG. 6A. 6B is moved from the position to the position shown in FIG. 6C by the urging force of the torsion spring 53.

  Further, when the rotating shaft 51 moves between the position shown in FIG. 6A and the position shown in FIG. 6B with respect to the elongated hole 52, the other end 53b of the torsion spring 53 is opposed. It is in sliding contact with the surface 32c. A range of the facing surface 32c that is in sliding contact with the other end 53b is formed by an inclined surface 32e that is inclined in a direction in which the distance from the lid 31 increases toward the inner wall surface 32b. Furthermore, as shown in FIG. 3, the other end 53b is curved in an arc shape in order to prevent the other end 53b from being caught by the inclined surface 32e when slidably contacting the inclined surface 32e.

  When the surface in sliding contact with the other end 53b of the torsion spring 53 is flat, when the lid 31 is rotated in the closing direction (arrow D direction), the lid 31 is in the locked position (position shown in FIG. 4A). A force acts in the direction of movement. For this reason, the user needs to perform two operations, an operation in the direction in which the lid 31 is closed and an operation in which the user moves to the release position (the position shown in FIG. 4B). However, as described above, when the range in sliding contact with the other end 53b is formed by the slope 32e, as shown in FIG. 6C, when the lid is rotated in the closing direction (arrow C direction), the slope 32e It moves to the position shown in FIG. 6B without applying force in the direction of moving to the lock position (position shown in FIG. 4A) with respect to the lid 31.

  Next, the click mechanism will be described. As will be described later, this click mechanism includes a click protrusion 57 and a click plate 66 that is a click locking means. The click mechanism will be described below.

  An opening 65 is formed in the facing surface 32c, and a click plate 66 is disposed so as to protrude from the opening 65 toward the facing surface 32c. The click plate 66 is a leaf spring, and has a curved portion 66a that is curved in an arc shape on the lid side, as shown in FIG. Further, the rear end portion is bent and is fixed to the back surface of the facing surface 32c on the rotating shaft 51 side with respect to the opening 65. Further, a click protrusion 57 is formed on the inner surface 31 a of the lid 31.

  When the lid 31 is in the locked position (position shown in FIG. 4A), the click protrusion 57 is located at a position adjacent to the rotation shaft 51 side at the tip of the bending portion 66a as shown in FIG. 7A. It arrange | positions and is latched by this curved part 66a. For this reason, resistance is given when the lid 31 is slid toward the release position (the position shown in FIG. 4A). When this resistance is overcome and the sliding operation is performed, the bending portion 66a moves upward (toward the opening 65) by the elastic deformation of the click plate 66, and the locking is released. As shown in FIG. The portion 66a abuts on the upper portion (opening 65 side) of the click protrusion 57. At this time, by the restoring force of the click plate 66, the lid 31 is urged and rotated toward the open position shown in FIG.

  Next, the operation of the storage unit 30 having the above configuration will be described. When the user loads the battery 41 or the memory card 44 in the camera body 11 or removes them from the camera body 11, the lid 31 of the storage unit 30 is opened.

  The lid 31 is prohibited from rotating by the above-described lock mechanism at the lock position (position shown in FIG. 4A). For this reason, the lid 31 is slid from the lock position (position shown in FIG. 4A) to the release position (position shown in FIG. 4B).

  When the lid 31 is in the locked position (the position shown in FIG. 4A), the click protrusion 57 is locked by the curved portion 66a of the click plate 66 as shown in FIG. Overcoming the resistance, the lid 31 is slid. When the lid 31 is moved to the release position (the position shown in FIG. 4B), the click plate 66 is elastically deformed as shown in FIG. To the opening 65 side).

  When the bending portion 66a is moved upward, the lid 31 is urged toward the open position shown in FIG. 7C by the restoring force of the click plate 66. At this time, the lid 31 is also urged to the open position by the torsion spring 53, and the lid 31 is rotated to the open position shown in FIG. The mouth 45 is exposed.

  Thereafter, the battery 41 and the memory card 44 are loaded or removed. When the battery 41 is loaded, the battery 41 is inserted in a state where the locking claw 46 is moved to the outside of the battery insertion port 43. Similarly, when the battery 41 is taken out, the latching claw 46 is moved outside the battery insertion port 43. In addition, the latching claw 46 is provided on the side that is slid and moved when the lid 31 is opened (the rotation shaft 51 side), and the operation direction is common, so that the operability is good.

  When the lid 31 is closed, a force is applied in the direction of arrow D to the lid 31 in the open position (position shown in FIGS. 6C and 7C). At this time, the other end 53b of the torsion spring 53 is in contact with the inclined surface 32e, and no force acts in the direction of moving to the lock position (position shown in FIG. 4A). For this reason, the lid 31 moves to the release position (the position shown in FIG. 4B) simply by applying a force to the lid 31 in the direction of arrow C. For this reason, there is no need to operate the lid 31 toward the release position (position shown in FIG. 4), and the lid 31 can be moved to the release position (position shown in FIG. 4) in one operation. it can.

  Further, a force is applied in the closing direction to the lid 31 in a state where the rotation shaft 51 is on the lock position (position shown in FIG. 5A) side of the release position (position shown in FIG. 5B). In this case, when the projection 56 and the locking projection 62 are in contact with each other, if a force is further applied to the lid 31 in the closing direction, a force is applied to the lid 31 in the arrow C direction, The lid 31 moves to the release position. For this reason, the lid | cover 31 can be moved to a cancellation | release position only by the operation | movement which applies force to the closing direction (arrow D direction).

  Thereafter, when the lid 31 is moved from the release position (position shown in FIG. 4 (B)) to the lock position (position shown in FIG. 4 (A)), the lid 31 is locked by the lock mechanism of the holding portion 32, and the lid The rotation of 31 is prohibited. As described above, when the lid 31 is closed, the lid 31 is moved to the release position (position shown in FIG. 4B) only by applying an action to the lid 31 in the closing direction (arrow C direction). Since the lid | cover 31 can be moved, the operativity at the time of closing the lid | cover 31 improves.

  Further, as described above, the lid 31 is moved only in the storage portion 32, and the storage portion 32 is provided in the lower surface of the camera body 11. For this reason, since the lid 31 moves only inside the side surface adjacent to the lower surface, the locking mechanism of the lid 31 is not arranged at the corner of the camera body 11. For this reason, even if an impact is applied to the corner of the camera body 11 due to dropping or the like, the lock mechanism is not damaged.

  Further, in the case of the configuration in which the lid 31 slides outside the side surface, a split line of the lid is formed on the two surfaces of the lower surface and the side surface. However, as in the present invention, only on the inner side of the side surface adjacent to the lower surface. In the case of a configuration in which the lid 31 moves, the lid split line only needs to be formed on the lower surface, so that the processing of the cover member constituting the camera body 11 is facilitated, the manufacturing cost can be reduced, and the aesthetics are also improved. To do.

  In the above-described embodiment, the case where the rotation mechanism is configured by the rotation shaft provided in the lid and the long hole formed in the holding portion has been described as an example. The rotation mechanism may be configured by providing a rotation shaft in the holding portion and forming a long hole in the lid. In this case, when the lid is moved between the lock position and the release position, the end portion of the torsion spring is in sliding contact with the inner surface of the lid. Therefore, the sliding contact surface may be formed as an inclined surface.

  Moreover, in the said embodiment, although the case where a click mechanism was comprised by the click plate provided in the holding | maintenance part and the click protrusion formed in the inner surface of a lid was demonstrated to the example, it is not restricted to this, The click plate may be provided on the inner surface of the lid, and the click protrusion may be provided on the holding portion.

  Furthermore, in the above-described embodiment, the case where the storage unit of the storage unit is disposed in the lower surface of the camera body has been described as an example. However, the present invention is not limited to this, and the storage unit may be integrally provided on the lower surface of the camera body. .

  In the above embodiment, the case where the lid is provided on the lower surface of the camera body has been described as an example. However, the present invention is not limited to this and may be provided on any surface such as the upper surface or the side surface. Furthermore, the sliding direction and rotation direction of the lid are not limited to the present embodiment, and can be changed as appropriate.

  Furthermore, in the above embodiment, the digital camera has been described as an example. However, the present invention is not limited to this, and the present invention can be applied to any device that requires a lid.

It is a perspective view which shows the structure of the front side of a digital camera. It is a top view which shows the structure of the lower surface side of a digital camera. It is a perspective view which shows the structure of a storage unit. It is a top view which shows the structure of the lower surface side of a storage unit, and has shown the case where a lid | cover is slid to the lock position and the release position. It is sectional drawing which shows the structure of a storage unit, and has shown the structure and effect | action of the protrusion which is a locking mechanism, and a latching protrusion. It is sectional drawing which shows the structure of a storage unit, and has shown the structure and effect | action of a torsion spring. It is sectional drawing which shows the structure of a storage unit, and has shown the structure and effect | action of a click mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Digital camera 11 Camera body 11a Front cover 11b Rear cover 30 Storage unit 31 Cover 32 Holding part 41 Battery 43 Battery insertion slot 46 Locking claw 52 Rotating shaft 54-56 Projection 53 Torsion spring 57 Click projection 61 Locking hole 62 Locking Protrusion 66 Click plate

Claims (5)

A sliding operation is performed between a lock position that covers an opening formed on one surface of the housing and is locked by the housing and is prohibited from rotating, and a release position in which the locking by the housing is released, and the release position In the opening and closing mechanism of the lid that rotates to the open position to expose the opening through
When the lid is slid from the lock position to the release position, the lid includes a turning mechanism for turning the lid with the end portion on the sliding direction side as a fulcrum,
The lid is held by the housing so as to be slid within the one surface ,
The rotation mechanism is provided on one of the end portion or the casing, and is provided on the other side of the rotation axis arranged to be orthogonal to the sliding direction of the lid, and is formed along the sliding direction. It is composed of two long holes engaged with both ends of the rotating shaft,
The torsion spring is inserted through the pivot shaft and biases the lid from a position covering the opening toward the open position, and one end of the torsion spring is in contact with the inner surface of the lid, and the other end is When the lid is in contact with the casing and the lid moves between the lock position and the release position, the sliding contact surface with which the one end or the other end slides is moved toward the rotating shaft side. A lid opening / closing mechanism, wherein the lid is inclined so that a gap between the lid and the holding portion is widened .   A protrusion formed on the inner surface side of the lid, and a member formed on the housing, which locks the protrusion when the lid is moved to the lock position and retracts from the protrusion when the lid is moved to the release position. And when the lid is moved from the open position to a position covering the opening, the projection and the locking projection are mutually connected. The lid opening / closing mechanism according to claim 1, wherein the abutting contact surface is inclined so that a gap between the contact surface and the lid increases as going to the rotating shaft side.   A sliding operation is performed between a lock position that covers an opening formed on one surface of the housing and is locked by the housing and is prohibited from rotating, and a release position in which the locking by the housing is released, and the release position In the opening and closing mechanism of the lid that rotates to the open position to expose the opening through
  When the lid is slid from the lock position to the release position, the lid includes a turning mechanism for turning the lid with the end portion on the sliding direction side as a fulcrum,
  The lid is held by the housing so as to be slid within the one surface,
  The rotation mechanism is provided on one of the end portion or the casing, and is provided on the other side of the rotation axis arranged to be orthogonal to the sliding direction of the lid, and is formed along the sliding direction. It is composed of two long holes engaged with both ends of the rotating shaft,
  A protrusion formed on the inner surface side of the lid, and a member formed on the housing, which locks the protrusion when the lid is moved to the lock position and retracts from the protrusion when the lid is moved to the release position. And when the lid is moved from the open position to a position covering the opening, the projection and the locking projection are mutually connected. The lid opening / closing mechanism characterized in that the abutting surface to be abutted is inclined so that the gap between the lid and the lid increases as going to the rotating shaft side. Provided at a position adjacent to the opening on the rotating shaft side, and provided with a locking claw for locking the load loaded in the opening, and the locking claw projects toward the center of the opening. The lid opening / closing mechanism according to any one of claims 1 to 3, wherein the lid opening / closing mechanism is slidable in a direction of retreating from the opening toward the rotating shaft side. A click projection formed on the inner surface side of the lid or one of the housings, and provided on the other side, and when the lid is in the locked position, the click projection is locked to provide resistance to sliding operation of the lid. And a click locking means for releasing the locking with the click projection when the sliding operation is performed overcoming this resistance, and urging the lid toward the open position. The lid opening / closing mechanism according to any one of claims 1 to 4 .

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