JP5053248B2 - Electrical equipment - Google Patents

Description

  The present invention relates to an electric device having an opening and to which a cover for opening and closing the opening is attached.

  In some electronic devices, an opening is provided in the housing for a user to put a hand inside the housing to perform operation and maintenance, and the opening is opened and closed by a cover attached to the housing. For example, Patent Document 1 describes a printer having such a housing and a cover. This printer includes a cover that is attached to the upper surface of the housing and opens upward to open and close the opening.

JP 2007-160816 A (FIGS. 3 to 5 and 7 to 9)

  When the printer described in Patent Document 1 is installed in a space with a limited height such as the inner space of a shelf, the cover that opens upward hits the ceiling of the inner space, and the opening is sufficiently large. Not open. Considering this point, even if an opening is provided in the housing of various electric devices such as a printer and a cover for opening and closing the electric device is attached, the cover may be opened depending on the installation location of the electric device. There are cases where it cannot be done.

  By the way, in order to prevent the user from touching the wiring or circuit arranged inside the housing of the electric device and causing the user to get an electric shock or failure of the electric device, a detection unit that operates when the cover is opened and closed is provided. There is a case where it is provided in an electric device and power supply to the electric device is stopped in conjunction with opening and closing of the cover. In addition to stopping the power supply, such a detection unit may be used to sound a warning sound or display an error message on the display when it is detected that the cover is opened.

  The present invention has been made in view of the above points, and an object of the present invention is to link a cover for an electrical device that opens an opening from a plurality of directions and a detection unit.

  An electrical device according to the present invention is a housing having a first surface and a second surface adjacent to each other, an opening provided across the first surface and the second surface, and a housing rotatably attached to the housing A first door that opens and closes a portion of the opening that opens to the first surface, and a door that is pivotally attached to the first door and opens and closes a portion of the opening that opens to the second surface. A fixing structure for fixing the second door, the first door, and the second door in a shape that closes the entire opening, and a direction away from the center of rotation of the second door with respect to the first door. A first protrusion of the protrusion that protrudes from the rotation front end side of the second door, and a first movement of the protrusion that accompanies the rotation of the first door and the second door fixed by the fixing structure in the housing. The location that intersects the locus and the first door opens on the first surface of the opening. A detection hole that opens to a location that intersects with the second movement locus of the protrusion accompanying the rotation of the second door in a state in which the portion to be closed is provided, and is provided inside the housing, And a detection unit for detecting the protruding body that has entered.

  According to the present invention, the entire opening can be opened by fixing the first door and the second door, and only the second door is opened without fixing the first door and the second door. The second surface side of the housing can be opened in the opening. And a protrusion can enter into a detection hole, or can come out from a detection hole also by fixing a 1st door and a 2nd door and opening these, or opening only a 2nd door. Therefore, the cover for an electric device that opens the opening from a plurality of directions and the detection unit can be interlocked.

  One embodiment (first embodiment) of the present invention will be described with reference to FIGS. The electrical device described in this embodiment is an RFID single sheet printer 101. The RFID single sheet printer 101 prints and writes data on a rewritable single sheet 102 (see FIG. 3) in which an RFID chip (not shown) is embedded. The rewritable single sheet 102 is capable of both printing and erasing the printed content according to the difference in temperature reached by the applied heat. More specifically, a reversible thermosensitive recording layer containing a leuco dye or a developer is laminated on the surface of the rewritable unit sheet 102. The reversible thermosensitive recording layer has a characteristic that the printed content is fixed by rapid cooling after heating, and the printed content is erased by slow cooling after heating. For such a rewritable single sheet 102, the RFID single sheet printer 101 changes the temperature applied to the rewritable single sheet 102, thereby erasing not only the printed contents but also the printed contents.

  FIG. 1 is an external perspective view of the RFID single sheet printer 101. The RFID single sheet printer 101 has a housing 103. The housing 103 has a substantially rectangular parallelepiped box shape and looks rectangular in a plan view. The sheet feeding unit cover 104 is attached to an upstream side surface 103 a as one first surface in the short direction of the housing 103 so as to be freely opened and closed. The user can replenish the rewritable single sheet 102 to the paper feed unit 202 (see FIG. 3) provided inside the housing 103 by opening the paper feed unit cover 104. A power supply cable insertion port 112 is provided at a position on the upstream side surface 103 a that hits the lower right side of the sheet feeding unit cover 104. A power supply cable (not shown) for supplying 24V power to the RFID cut sheet printer 101 is inserted into the power supply cable insertion port 112.

  FIG. 2 is an external perspective view of the RFID single sheet printer 101 as viewed from the opposite side to FIG. The housing 103 is provided with a paper discharge port 105, a reject accumulating unit cover 106, a liquid crystal display 107, and an operation panel 108 on the other downstream side surface 103b in the short side opposite to the upstream side surface 103a. . A reject accumulation portion (not shown) is provided inside the housing 103 at a location on the back side of the reject accumulation portion cover 106.

  The housing 103 has an upstream cover 109 and a downstream cover 110 on the upper surface. The upstream cover 109 and the downstream cover 110 are each attached to the housing 103 via a hinge 111 so as to be openable and closable upward. The upstream cover 109 is provided closer to the paper feed unit cover 104 than the downstream cover 110. The downstream cover 110 forms a paper discharge port 105 together with the housing 103. Below the upstream cover 109, heat is applied to the rewritable single sheet 102 (see FIG. 3) conveyed from the paper supply unit 202 (see FIG. 3) toward the paper discharge port 105, so that the rewritable single sheet 102. An erasing unit (not shown) for erasing the printed content is provided. Below the downstream cover 110, an RFID reader / writer (not shown) that writes data to the RFID chip in the rewritable single sheet 102 that has passed through the erasing unit, and a print on the rewritable single sheet 102 that has been written with data A printing unit (not shown) for performing the above is provided. The RFID single sheet printer 101 conveys the rewritable single sheet 102 to an erasing unit, an RFID reader / writer, and a printing unit, erases print contents, writes data, and prints, and issues the rewritable single sheet 102 from the paper discharge port 105. The RFID single sheet printer 101 has a function of distributing the rewritable single sheet 102 having the RFID chip to the reject stacking unit when the RFID reader / writer determines that communication with the RFID chip has failed. Therefore, the rewritable cut sheet 102 determined by the RFID cut sheet printer 101 as having a broken RFID chip is accumulated in the reject stacking unit. The user can open the reject stacking unit cover 106 and take out the rewritable single-cut sheet 102 determined to be the rewritable single-cut sheet 102 having the broken RFID chip from the reject stacking unit.

  FIG. 3 is an external perspective view of the RFID single sheet printer 101 in a state where the paper feed unit cover 104 is opened. The housing 103 has an opening 201. The opening 201 is provided across the upstream side surface 103a and the left side surface 103c as a second surface adjacent to the upstream side surface 103a. The left side surface 103c is a side surface adjacent to the left side of the upstream side surface 103a in FIGS. The left side surface 103c is adjacent to the downstream side surface 103b (see FIG. 2). When the paper supply unit cover 104 is opened as shown in FIG. 3, the paper supply unit 202 provided inside the housing 103 is exposed. The paper feed unit 202 includes a paper placement table 203 that moves up and down by driving a motor (not shown). A sheet guide 204 extending vertically is provided on the upstream side surface 103 a side of the sheet placing table 203. A sheet guide 205 extending vertically is provided on the side of the sheet placing table 203 on the downstream side surface 103b (see FIG. 2) side. A support panel 206 extending vertically is provided on the right side in FIG. A sheet cover 207 is provided on the left side surface 103c side of the sheet placing table 203. The sheet cover 207 extends vertically and is fixed at the bottom and can be opened and closed so that the upper part opens to the left. The paper mounting table 203, the paper guide 204, the paper guide 205, the support panel 206, and the paper cover 207 are attached to a chassis 208 that is fixedly attached to the housing 103. The paper guide 204 is attached to the RFID single sheet printer 101 by being inserted from above into a mounting hole 204 a provided in the chassis 208. Then, the user holds the paper guide 204 in his hand, lifts it upward, removes the paper guide 204 from the mounting hole 204a, removes it, and sets the rewritable single sheet 102 on the paper feed unit 202 from the upstream side surface 103a side. Can do. A handle 208 a is attached to the top of the paper cover 207. Then, the user can open the paper cover 207 by pulling the handle 208 a and set the rewritable single sheet 102 on the paper feeding unit 202 from the left side surface 103 c side.

  The sheet feeding unit cover 104 is L-shaped in a plan view and has a shape that closes the opening 201 that opens as shown in FIG. The paper feed unit cover 104 includes a first door 209 and a second door 210. The first door 209 has the same shape as the portion of the opening 201 that opens to the upstream side surface 103a. The first door 209 is attached to the housing 103 via a hinge 211 so as to be freely opened and closed. A hinge 212 (see FIGS. 1 and 2) and a fixing plate 213 (see FIG. 2) are attached to the side opposite to the side of the first door 209 to which the hinge 211 is attached. The hinge 212 is attached to the first door 209 and the second door 210 so as to be rotatable. The second door 210 has a shape that closes a portion of the opening 201 that opens to the left side surface 103c. A handle 214 is provided on the surface of the second door 210 that is flush with the left side surface 103c.

  The paper feed unit cover 104 can open and close the entire opening 201, or can open and close only the portion of the opening 201 that opens to the left side surface 103 c. This point will be described with reference to FIGS. Two screw holes 215 are provided on a side surface 210 a of the second door 210 that rotates and faces the first door 209. The fixing plate 213 is provided with a female screw hole 216 at a position where the second door 210 coincides with the screw hole 215 in a state where the opening 201 is closed. By rotating the second door 210 and positioning the second door 210 so that the first door 209 and the second door 210 form an angle of 90 degrees, the screw hole 215 of the side surface 210a of the second door 210 is fixed. The female screw hole 216 of the plate 213 overlaps. In this state, by inserting a screw 217 from the outside of the screw hole 215 on the side surface 210a of the second door 210 and screwing it into the female screw hole 216, the first door 209 and the second door 210 are connected to the upstream side surface 103a and the left side. The sheet feeding unit cover 104 is fixed to a positional relationship that forms the same angle (90 degrees in this embodiment) with the side surface 103c, and the entire opening 201 is closed. Further, by removing the screw 217, the second door 210 is rotatable with respect to the first door 209. As described above, the screw hole 215 and the female screw hole 216 are screwed into the screw 217, so that the first door 209 and the second door are at the same angle as the angle formed between the upstream side surface 103a and the left side surface 103c. 210, and a fixing structure 218 that fixes the first door 209 and the second door 210 in a shape that closes the entire opening 201 is configured. In a state where the first door 209 and the second door 210 are fixed by the screw 217, the first door 209 and the second door 210 move together by opening the handle 103 and holding the handle 214 to the outside. The entire part 201 can be opened (see FIG. 3). In this state, the user can set the rewritable single sheet 102 on the sheet feeding unit 202 from the upstream side surface 103a side. On the other hand, when the screw 217 is removed, as shown in FIG. 2, only the upstream side surface 103 a of the opening 201 is closed by the first door 209, and only the second door 210 is rotated to rotate the opening 201. Of these, only the portion opening in the left side surface 103c can be opened and closed. In this state, the user can set the rewritable single sheet 102 on the sheet feeding unit 202 from the left side surface 103c side.

  A protrusion 301 is attached to the second door 210. The protrusion 301 is demonstrated based on FIG.2 and FIG.3. In the second door 210, the second door 210 rotates around the first door 209 at the center of the side surface 210 b opposite to the side surface 210 a (see also FIG. 1) of the second door 210 where the screw hole 215 is provided. A recess 302 is provided in a recess in the direction of the moving center (the rotation center point 211a of the hinge 211 (see FIG. 5)). An extension part 303 is formed on the lower surface of the recess 302 so as to extend in a direction away from the rotation center point 211 a of the hinge 211. A cylindrical shaft body 304 is provided inside the recess 302 and on the upper surface of the extension 303. A disc body 305 having a circumferential inner peripheral surface is mounted from above the shaft body 304. The mounted disc body 305 is prevented from falling off by an E-ring (not shown) that is positioned above the disc body 305 and press-fitted into the shaft body 304 and assembled, and can be rotated around the shaft body 304. It becomes. A part of the disk body 305 protrudes from the side surface 210b in a direction away from the rotation center point 211a of the hinge 211 in a state where the disk body 305 is attached to the shaft body 304. Thus, the extension part 303 and the disk body 305 constitute a projecting body 301 that projects from the second door 210.

  The protrusion 301 enters the detection hole 219 provided at the center of the side of the housing 103 that extends vertically on the left side surface 103c. The detection hole 219 is an elongated hole in the horizontal direction, and a part of the detection hole 219 is formed on the left side surface 103c, and extends continuously from the upstream side surface 103a of the RFID cut sheet printer 101 in the right direction. The protrusion 301 enters the detection hole 219 to switch the micro switch 306 as a detection unit provided inside the housing 103. This point will be described with reference to FIG.

  In the housing 103, it is continuous with the left side surface 103 c, is parallel to the upstream side surface 103 a, and comes into contact with the side surface 210 b of the second door 210 in a state where the paper feed unit cover 104 closes all of the opening 201. On the surface 103e, magnet portions 220 are provided above and below the detection hole 219, respectively. Further, in the second door 210 of the sheet feeding unit cover 104, an iron body 221 is embedded in a region of the side surface 210b that faces the magnet unit 220. The iron body 221 is pulled by the magnet unit 220 in a state where the paper feed unit cover 104 closes all of the opening 201. Furthermore, when the paper feed unit cover 104 closes the entire opening 201, the extension 303 contacts the lower surface of the detection hole 219. For this reason, not only the magnetic force between the magnet part 220 and the iron body 221 but also the state in which the paper feed part cover 104 remains closed by the frictional force between the extension part 303 and the lower surface of the detection hole 219. Is maintained.

  FIG. 4 is a schematic plan view showing the microswitch 306. The micro switch 306 is a mechanical switch for a 24V power supply, and is switched when the moving piece 307 is displaced to open and close an electrode contact 308 as a contact. By switching the micro switch 306, power is supplied to the RFID single sheet printer 101 or the supply is stopped. The micro switch 306 has a moving piece 307. The moving piece 307 is disposed inside the housing 103. The moving piece 307 is a plate-like member that is elongated vertically and has a rounded rectangular cross-sectional shape in plan view. The moving piece 307 is arranged with the plane portion facing the upstream side surface 103a and the downstream side surface 103b, and can be displaced in a predetermined direction D from the upstream side surface 103a to the downstream side surface 103b in the RFID single sheet printer 101. It has become. Hereinafter, of the surfaces of the moving piece 307, the surface facing the upstream side surface 103a is referred to as a front surface 309, and the surface facing the downstream side surface 103b is referred to as a back surface 310. The moving piece 307 is urged by a spring (not shown) as an urging member attached to the chassis 208, and is positioned close to the upstream side surface 103a side. A fixed body 312 fixed to the chassis 208 or the like is disposed at a position away from the back surface 310 of the moving piece 307 on the downstream side surface 103b side with respect to the moving piece 307. The electrode contact 308 as a contact includes a flat metal body 311 disposed on the back surface 310 of the moving piece 307 and a metal protrusion 313 protruding from the fixed body 312 toward the moving piece 307 at a position facing the metal body 311. And composed of The metal body 311 and the metal protrusion 313 constitute a part of a circuit (not shown) of a current that flows in the RFID single sheet printer 101. For this reason, when the metal body 311 and the metal protrusion 313 come into contact with each other, the power is turned on and power is supplied to the RFID single sheet printer 101. Further, when the metal body 311 and the metal protrusion 313 are separated from each other, the power is turned off, and the power supply to the RFID single sheet printer 101 is interrupted. Note that the metal body 311 and the metal protrusion 313 constituting the electrode contact 308 are at a height position away from the detection hole 219 so that a foreign body such as a user's human body (finger) or dust that can enter from the detection hole 219 is not touched. Provided.

  FIG. 5 is a schematic plan view showing a state where the moving piece 307 is pushed by the protrusion 301 and the microswitch 306 is turned on. In the RFID single sheet printer 101, the protrusion 301 provided on the rotating front end side of the second door 210 enters the detection hole 219 when the entire opening 201 is closed by the paper feed unit cover 104. At this time, the outer periphery 305 a of the disk body 305 constituting the protruding body 301 abuts on the surface 309 side of the moving piece 307, and pushes the moving piece 307 in the direction of the downstream side surface 103 b of the RFID single sheet printer 101. The moving piece 307 is pushed by the disk body 305 and moves in the direction of the downstream side surface 103b, and the position of the moving piece 307 drawn by a solid line in FIG. 5 from the position BF of the moving piece 307 drawn by a one-dot chain line in FIG. Displace to AF. At this time, the metal body 311 disposed on the back surface 310 side of the moving piece 307 contacts the metal protrusion 313 of the electrode contact 308. As a result, the micro switch 306 is turned on and power is supplied to the RFID single sheet printer 101.

  On the other hand, when the sheet feeding unit cover 104 is opened, the protrusion 301 is removed from the detection hole 219, and the outer periphery 305 a of the disc body 305 is separated from the surface 309 side of the moving piece 307. At this time, the protrusion 301 is biased by a spring (not shown) and moves in the direction of the upstream side surface 103a, and is displaced from the position AF to the position BF.

  FIG. 6 is a plan view showing a state in which the protrusion 301 pushes the moving piece 307. Hereinafter, description will be given based on FIGS. 5 and 6.

  First, consider a state in which the screw 217 enters the screw hole 215 and is screwed into the female screw hole 216 to fix the first door 209 and the second door 210. In this case, in the paper feed unit cover 104, the first door 209 and the second door 210 move together while forming an angle of 90 degrees to open and close the entire opening 201. At this time, the shaft body movement locus R1 of the shaft body 304 due to the rotation of the paper feed unit cover 104 is an arc centered on the rotation center point 211a of the hinge 211.

  Next, a state where the screw 217 is removed from the screw hole 215 and the female screw hole 216 will be considered. In this case, the second door 210 is rotatable with respect to the first door 209. In this state, the user picks up the handle 214 and opens the second door 210, so that the portion of the opening 201 that opens to the upstream side surface 103a side is closed by the first door 209 and the opening 201 is closed. Of these, only the portion opened to the left side surface 103c side can be opened and closed. At this time, the shaft body movement locus R2 of the shaft body 304 due to the rotation of the second door 210 is an arc whose center is the rotation center point 212a of the hinge 212.

  Here, attention is paid to the detection hole 219 and the moving piece 307 of the micro switch 306. The detection hole 219 of the present embodiment has a shape that is continuous with the left side surface 103c and the contact surface 103e, and the protrusion 301 that accompanies the rotation of the first door 209 and the second door 210 fixed by the fixing structure 218. Of the second door 210 in a state where the first movement locus K1 and the housing 103 intersect with each other, and the first door 209 closes a portion of the opening 201 that opens to the upstream side surface 103a. The protrusion 301 is formed so as to open at a location where the second movement locus K2 of the protrusion 301 and the housing 103 intersect. And the moving piece 307 of this Embodiment is arrange | positioned in the crossing area | region K3 of the 1st movement locus | trajectory K1 and the 2nd movement locus | trajectory K2. Because the detection hole 219 has such a shape and the moving piece 307 is arranged in the intersection region K3, the protrusion 301 that moves the first movement locus K1 also protrudes that moves the second movement locus K2. The body 301 also enters the detection hole 219 and contacts the moving piece 307.

  The protrusion 301 that has entered the detection hole 219 comes into contact with the surface 309 side of the moving piece 307. Here, the outer periphery 305a of the disk body 305 constituting the protrusion 301 is formed in a convex curved shape. Further, the moving piece 307 is provided so as to be displaceable in the direction D as described above. This direction D is a direction along the protrusion 301 that moves along the first movement locus K1. When the projecting body 301 moves so that the shaft body 304 draws the shaft body movement locus R1 and enters the detection hole 219 and directly strikes the moving piece 307, the projecting body 301 is in a non-sliding state and the moving piece 307 The moving piece 307 receives the drag in the direction D from the outer periphery 305a of the disc body 305 as N1. Further, when the projecting body 301 moves and enters the detection hole 219 so that the shaft body 304 draws the shaft body movement trajectory R2, the moving piece 307 is moved from the outer periphery 305a of the disk body 305 in sliding contact with the surface 309. The drags N1 and N2 having a component in the direction D are received. In any case, the moving piece 307 moves along the direction D toward the downstream side surface 103b.

  Here, the modification about the protrusion 301 and the moving piece 307 of this Embodiment is demonstrated based on FIG.7 and FIG.8. In the RFID cut sheet printer 101 according to the present embodiment, the protrusion 301 and the moving piece 307 can have either the shape shown in FIG. 6 or the shape shown in FIG. 7 or FIG. .

  FIG. 7 is a schematic plan view showing a first modification of the projecting body 301 and the moving piece 307 of the present embodiment. In the first modification, the outer surface of the moving piece 307 is formed in a flat shape. And the disc body 305 which comprises the protrusion 301 has the curved surface shape where the area | region (outer periphery 305a of the disc body 305) contact | abutted to the moving piece 307 is convex. Here, when the protruding body 301 moves along the first movement locus K1 and enters the detection hole 219 and contacts the moving piece 307, the protruding body 301 contacts the moving piece 307 in a non-sliding state. The drag N1 parallel to the direction D is received by the planar surface 309 by being pushed by the outer periphery 305a of the disk body 305 that directly strikes the planar surface 309, and moves toward the downstream side surface 103b along the direction D. Further, when the protrusion 301 moves along the second movement locus K2 and enters the detection hole 219 and contacts the moving piece 307, the disc body 305 slips in a state inclined to the planar surface 309 of the moving piece 307. The surface 309 is pressed while contacting, and a drag N2 having a component parallel to the direction D is applied to the moving piece 307 to move the moving piece 307 along the direction D toward the downstream side surface 103b.

  FIG. 8 is a schematic plan view showing a second modification of the protrusion 301 and the moving piece 307 of the present embodiment. In the second modified example, the protruding body 301 has a rectangular body 351 instead of the disk body 305. The surface 309 of the moving piece 307 has a convex curved surface. Here, when the protruding body 301 moves along the first movement locus K1 and enters the detection hole 219 and contacts the moving piece 307, the protruding body 301 contacts the moving piece 307 in a non-sliding state. The drag N1 parallel to the direction D is received by the surface 309 on the curved surface by being pushed by the outer periphery 351a of the rectangular body 351 that directly strikes the curved surface 309, and moves toward the downstream side surface 103b along the direction D. At this time, the rectangular body 351 pushes the moving piece 307 from the position BF to the position AF while sliding the outer periphery 351a of the rectangular body 351 on the surface 309 of the moving piece 307. Further, when the projecting body 301 moves along the second movement locus K2 and enters the detection hole 219 and contacts the moving piece 307, the rectangular body 351 slides on the curved surface 309 of the moving piece 307 while sliding on the surface 309. And a drag N2 having a component parallel to the direction D is applied to the moving piece 307 to move the moving piece 307 along the direction D toward the downstream side surface 103b.

  As described above with reference to FIGS. 6 to 8, the switch 306 of the microswitch 306 is provided so as to be freely displaceable in the direction (direction D) along the protruding body 301 that moves on the first movement locus K1. By adopting a convex curved surface in an area in which at least one of the moving piece 307 and the projecting body 301 abuts against the other, the surface 309 of the moving piece 307 has drag N1, N2 In response, the moving piece 307 moves toward the downstream side surface 103b along the direction D in response to the opening and closing of the sheet feeding unit cover 104.

  In addition to the modified examples illustrated in FIGS. 6 and 8, at least one of the moving piece 307 and the projecting body 301 may have a region that is in contact with the other of the moving piece 307 and the protruding body 301 instead of a curved surface. Even in this case, the projecting body 301 moving along the second movement locus K2 pushes the surface 309 of the moving piece 307 and moves the moving piece 307 along the direction D to the downstream side surface 103b.

  FIG. 9 is a plan view showing a state where the micro switch 306 is switched by opening and closing the paper feed unit cover 104. In the RFID single sheet printer 101 of the present embodiment, the screw 217 enters the screw hole 215 and the female screw hole 216 and is screwed together, so that the first door 209 and the second door 210 can be fixed. Then, the user holds and pulls the handle 214 and rotates the first door 209 and the second door 210 together to open the opening 201 on both the upstream side surface 103a and the left side surface 103c. (FIG. 9A). At this time, the projecting body 301 moves so that the shaft body 304 draws the shaft body movement locus R1, and enters the detection hole 219. The disc body 305 of the protrusion 301 pushes the moving piece 307 constituting the micro switch 306 straightly, displaces the moving piece 307 in the direction of the downstream side surface 103b, and turns on the micro switch 306. Further, when the protrusion 301 is removed from the detection hole 219, the moving piece 307 is biased by a spring (not shown) and displaced in the direction of the upstream side surface 103a. As a result, the microswitch 306 is turned off.

  In the RFID single sheet printer 101 of the present embodiment, when the screw 217 is removed from the screw hole 215 and the female screw hole 216, the second door 210 can rotate independently of the first door 209. . The user can hold only the handle 214 and rotate only the second door 210 to open only the portion of the opening 201 that opens toward the left side surface 103c (FIG. 9B). At this time, the projecting body 301 moves so that the shaft body 304 draws the shaft body movement locus R <b> 2 and enters the detection hole 219. Even in this case, the micro switch 306 is turned on by pressing the moving piece 307 by slidingly contacting the surface 309 of the moving piece 307 while the disk body 305 of the protruding body 301 is inclined. The body 301 is removed from the detection hole 219 and the micro switch 306 is turned off.

  As described above, according to the RFID single sheet printer 101 of the present embodiment, the paper feed unit cover 104 and the micro switch 306 that open the opening 201 from a plurality of directions can be linked with a simple structure.

  Next, another embodiment (second embodiment) of the present invention will be described with reference to FIG. In this case, the same reference numerals are used for the same parts as those of the first embodiment and the modifications thereof, and the description thereof is also omitted.

  FIG. 10 is a plan view showing a state in which the protrusion 301 pushes the moving piece 307. The moving piece 307 of the present embodiment is arranged in a direction in which the surface 309 is inclined from the upstream side surface 103a to the left side surface 103c. Further, in the present embodiment, even if at least one of the projecting body 301 and the moving piece 307 is formed in a convex curved shape as described based on FIGS. 6 to 8, as shown in FIG. Both the surface 309 of the moving piece 307 and the outer periphery 351a of the rectangular body 351 may be planar.

  In the RFID single sheet printer 101 of the present embodiment, even if the first door 209 and the second door 210 are fixed by the fixing structure 218, the second door 210 is independent of the first door 209. Even in a rotatable state, the projecting body 301 that moves in accordance with the opening and closing of the paper feed unit cover 104 enters the detection hole 219, and the disk body 305 and the rectangular body 351 constituting the projecting body 301 serve as the moving piece 307. Contact surface 309. Here, in this embodiment, when the projecting body 301 hits the moving piece 307, the outer periphery of the projecting body 301 is in sliding contact with the moving piece 307 in an inclined state, and the moving piece 307 is displaced in the direction D. . For this reason, also in the present embodiment, the micro switch 306 is switched as the paper feed unit cover 104 is opened and closed. That is, even with the RFID cut sheet printer 101 of the present embodiment, the paper feed unit cover 104 and the micro switch 306 that open the opening 201 from a plurality of directions can be linked with a simple structure.

  By the way, in embodiment and the modification which were described so far, a detection part is the microswitch 306 used as a mechanical switch for 24V power supplies. For this reason, it is not preferable that the sheet feeding unit cover 104 moves and the protruding body 301 easily comes out of the detection hole 219. Therefore, in the present embodiment, when the protruding body 301 enters the detection hole 219, the extending portion 303 comes into contact with the lower surface of the detection hole 219, and the paper feed unit cover 104 is removed to open the opening 201. It is prevented. Further, the sheet feeding unit cover 104 closes the opening 201 and the magnet unit 220 provided in the housing 103 and the iron body 221 provided in the second door 210 of the sheet feeding unit cover 104 are adhered by magnetic force. Thus, it is possible to prevent the paper feed unit cover 104 from being removed and the opening 201 from being opened.

  Further, in the embodiments and the modifications described so far, the micro switch 306 that has the moving piece 307 that is displaced only in a predetermined direction as the detection unit and switches according to the displacement of the moving piece 307 is used. The type of part is not limited to this. As an example, a switch using an optical sensor having a light emitting unit that emits detection light and a light receiving unit that receives the detection light can be employed as the detection unit. In this case, the light emitting unit and the light receiving unit are arranged at a position sandwiching a portion where the protruding body 301 is positioned through the detection hole 219. By doing so, the protrusion 301 is inserted into the detection hole 219 or is removed from the detection hole 219, whereby the switch using the optical sensor is switched. Then, a switch using such an optical sensor is connected to a control circuit (not shown) of the RFID cut sheet printer 101, and the control circuit is controlled according to an electric signal output from the switch, so that the buzzer A warning sound may be emitted from a unit (not shown) or an error message may be displayed on the liquid crystal display 107.

  Note that the opening / closing structure of the sheet feeding unit cover 104 with respect to the opening 201 of the housing 103 shown in the present embodiment and its modification is not limited to the RFID single sheet printer 101, and two adjacent to the housing. It can employ | adopt with respect to any electric equipment which has the opening part formed ranging over a surface.

1 is an external perspective view of an RFID single sheet printer in a first embodiment. It is the external appearance perspective view which looked at the RFID single sheet printer from the opposite side to FIG. 2 is an external perspective view of an RFID single sheet printer in a state where a paper feed section cover is opened. FIG. It is a typical top view which shows a microswitch. It is a typical top view showing the state where the movable piece was pushed by the protrusion and the microswitch was turned on. It is a top view which shows a mode that a protrusion pushes a moving piece. FIG. 10 is a schematic plan view showing a first modification of a protrusion 301 and a moving piece 307. It is a typical top view shown about the 2nd modification of the protrusion 301 and the moving piece 307. FIG. FIG. 6 is a plan view showing a state where a micro switch is switched by opening and closing a paper feed unit cover. It is a top view which shows a mode that the protrusion 301 pushes the movement piece 307 in 2nd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... RFID single sheet printer (electric equipment) 103 ... Housing 103a ... Upstream side surface (first surface), 103c ... Left side surface (second surface), 201 ... Opening, 209 ... First door, 210 ... First 2 doors, 211a ... rotation center point (rotation center of the second door with respect to the first door), 218 ... fixed structure, 219 ... detection hole, 301 ... projection body, 305a ... periphery of the disc body (outer circumference or its outer circumference) 306 ... micro switch (detection unit), 307 ... moving piece, 308 ... electrode contact (contact), K1 ... first moving locus, K2 ... second moving locus, K3 ... intersection region,

Claims (4)

A housing having a first surface and a second surface adjacent to each other;
An opening provided across the first surface and the second surface;
A first door that is pivotally attached to the housing and opens and closes a portion of the opening that opens to the first surface;
A second door that is pivotally attached to the first door and opens and closes a portion of the opening that opens to the second surface;
A fixing structure for fixing the first door and the second door to a shape that closes the entire opening;
A projecting body projecting from the pivot front end side of the second door in a direction away from the pivot center of the second door with respect to the first door;
In the housing, a location that intersects a first movement trajectory of the projecting body accompanying the rotation of the first door and the second door fixed by the fixing structure, and the first door of the opening A detection hole that opens to a location that intersects a second movement locus of the protrusion with the rotation of the second door in a state in which the portion that opens to the first surface is closed,
A detection unit that is provided inside the housing and detects the protrusion that has entered the detection hole;
An electrical apparatus comprising:   The detection unit is displaceable along one of the first and second movement trajectories in the detection hole, and the projecting body moving along one of the movement trajectories is in a non-sliding state. A micro switch that has a moving piece that is pushed and displaced by the sliding contact in an inclined state on the projecting body that is pushed and displaced and moves along the other movement locus, and that opens and closes the contact point by the displacement of the moving piece The electrical apparatus according to claim 1, further comprising:   The detection unit includes a moving piece that is pushed and displaced by sliding contact in an inclined state with the protrusion that moves along the first and second movement trajectories in the detection hole. The electrical device according to claim 1, further comprising a micro switch that opens and closes the contact point by displacement of the piece.   4. The electric device according to claim 2, wherein at least one of the moving piece and the projecting body has a convex curved surface in an area in contact with the other. 5.

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