JP2015020348A - Switch cover and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch cover that is post-installed in an electronic apparatus such as a printer being shipped as a product to prevent a power supply switch from being operated erroneously.SOLUTION: The switch cover has: a frame member 22 that is fixed to the front surface of a case for a printer to surround a power supply switch; and a lid member 23 that is supported by the frame member 22 to be moveable between a closing position 23A that blocks an opening portion 24 near an inner periphery of the frame member 22 to shield the power supply switch to be in a non-active state, and an opening position 23B that opens the opening portion 24 to release the shield of the power supply switch. In the switch cover, just fixing the frame member 22 to the front surface of the case to surround the power supply switch allows the lid member 23 to cover the power supply switch so as not to be operated.

Description

  The present invention relates to a switch cover that is attached to an electronic device such as a printer and covers a power switch, and a printer including the switch cover.

  A printer installed at a cash register counter in a store and connected to peripheral devices such as credit card processing terminals is equipped with a print processing unit that performs printing and an arithmetic processing unit that has the same functions as a computer. There is something that is. In the arithmetic processing unit, driver software such as a printer driver that drives and controls the print processing unit and a device driver that drives and controls peripheral devices operates. Such a printer is described in Patent Document 1.

JP 2008-171303 A

  In a printer equipped with an arithmetic processing unit, when the power switch is turned on, the same startup processing operation as when the power switch of the computer is turned on is performed. That is, an operating system is started up in the arithmetic processing unit, and a printer driver and a device driver are loaded to enable drive control of peripheral devices connected to the print processing unit and the printer. Therefore, if an operator or customer accidentally touches the printer's power switch and turns it off while trying to perform customer accounting, the printer returns to a printable state after the power switch is turned on. It takes time to do so and may make the customer wait.

  In view of these points, an object of the present invention is to provide a switch cover that can be retrofitted to an electronic device such as a printer that is shipped as a product to prevent a power switch from being erroneously operated. . Another object is to provide a printer equipped with such a switch cover.

  In order to solve the above-described problem, the switch cover of the present invention includes a frame member fixed to the surface of the case of the electronic device and surrounding the power switch, and an opening on the inner peripheral side of the frame member is sealed. A lid member that is supported by the frame member in a movable state between a closed position that shields the power switch in an inoperable state and an open position that opens the opening and allows the power switch to be operated. It is characterized by having.

  The switch cover of the present invention can cover the power switch in an inoperable state by the lid member only by fixing the frame member so as to surround the power switch with respect to the surface of the case of the electronic device. Therefore, it is possible to prevent the power switch of the electronic device from being erroneously operated by attaching a switch cover to the electronic device already shipped as a product.

  In the present invention, the frame member includes a pair of support portions that are opposed to each other with the opening portion interposed therebetween, and the lid member is disposed between the pair of support portions, and the pair of support portions The pair of support portions are supported so as to be rotatable about an axis extending in the opposing direction in which the pair of support portions are opposed, and the axis is in the opposing direction when the lid member is disposed at the closed position. And one end portion of the lid member in an orthogonal direction orthogonal to the opening direction of the opening, and the lid member is coaxial with the axis toward each side of the pair of support portions. It is desirable that a pair of projecting support shafts be provided, and that each support portion be provided with a recess that supports each support shaft in a rotatable state. If it does in this way, a lid member can be rotated between an open position and a closed position by simple composition.

  Here, when opening the lid member, the operator may pull an end portion opposite to the axis of the lid member, and a large force may be applied to the lid member from the axis toward the outside in the radial direction. In such a case, the support shaft may be damaged. With respect to such a problem, each support shaft has a direction toward the other end portion of the cover member in a direction away from the tip of the support shaft when the cover member is disposed at the closed position. It is desirable that a first inclined surface that is inclined to be provided. In this way, since each support shaft is provided with the first inclined surface, when the operator pulling the cover member applies a large force from the axis to the outer side in the radial direction, the support shaft is applied. Can be removed from the recess. That is, since the first inclined surface is formed in a direction in which a pulling force is applied to the support shaft, the support shaft is easily removed from the recess, and is removed from the recess before the support shaft is damaged. Therefore, damage to the support shaft can be avoided.

  In this case, each support shaft is provided with a second inclined surface that is inclined in a direction different from the first inclined surface and is away from the axis toward the direction away from the tip of the support shaft. It is desirable that If it does in this way, when a lid member remove | deviates from a pair of spindle part, each spindle of a lid member can be inserted in each recessed part of a pair of support part using a 2nd inclined surface. Therefore, the fitting operation for supporting the lid member on the pair of support shafts is facilitated. Further, it is possible to prevent the support shaft from being damaged during the fitting operation.

  Further, in this case, the second inclined surface is inclined in a direction away from the opening portion in a direction away from the distal end of the support shaft when the lid member is disposed at the closed position. It is desirable. In this way, when the lid member is arranged at the closed position, the lid member facing the opening is placed in a state where the back surface of the lid member faces the side opposite to the opening, and the lid member is pushed into the frame member. Thus, the lid member can be supported by the pair of support shaft portions.

  In the present invention, when the lid member is disposed at the closed position, a locking portion that can be locked to the frame member is provided on the other end side portion of the lid member in the orthogonal direction. It is desirable. In this way, the lid member arranged at the closed position is stabilized.

  In this invention, it is desirable to provide the double-sided tape by which one adhesive surface is affixed on the fixed surface to the said case in the said frame member. This makes it easy to fix the switch cover to the case of the electronic device.

  Next, a printer according to the present invention includes a printer case, a power switch, and the switch cover according to any one of claims 1 to 8, wherein the frame member includes the frame member. The power switch is fixed to the surface of the printer case and surrounds the power switch.

  Since the printer of the present invention has a switch cover that can be covered with the power switch, the power switch can be prevented from being erroneously operated.

  The switch cover of the present invention can cover the power switch in an inoperable state by the lid member only by fixing the frame member so as to surround the power switch with respect to the surface of the case of the electronic device. Moreover, in an electronic device to which the switch cover is attached, it is possible to prevent the power switch from being erroneously operated.

1A and 1B are a perspective view and a front view showing a printer to which the invention is applied. FIG. 2 is a schematic block diagram of the printer of FIG. 1. It is explanatory drawing of a switch cover. It is a perspective view of a lid member. It is explanatory drawing of a cover member. It is explanatory drawing of the opening / closing operation | movement of a switch cover. It is a front view which shows another example of a printer provided with a switch cover.

  A printer according to an embodiment to which the invention is applied will be described below with reference to the drawings.

(printer)
FIG. 1A is a perspective view when a printer to which the present invention is applied is viewed from an obliquely upper front, and FIG. 1B is a front view of the printer. The printer 1 of this example is a roll paper printer, and is installed and used at a cash register counter in a store. The printer 1 prints a receipt or the like on a long recording paper fed out from a roll paper stored in the printer case 3. In the following description, three directions orthogonal to each other will be described as an X direction, a Y direction, and a Z direction. The X direction is the printer width direction, the Y direction is the printer front-rear direction, and the Z direction is the printer vertical direction.

  The printer case 3 is made of resin. As shown in FIG. 1A, the printer case 3 is tilted downward from the front edge of the front surface of the case upper surface 5 and the front edge of the case upper surface 5, and tilted rearward. After extending downward from the left and right edges of the case upper surface 5 in the X direction of the case front surface 6 extending downward, the left and right sides extending further downward through a stepped portion recessed inward The case side surfaces 7 and 8, the case back surface 9 that curves downward from the rear edge of the case upper surface 5 toward the rear and then inclines forwardly downward, and the bottom of the printer case 3 are defined. The case bottom 10 is provided. The left and right case side surfaces 7 and 8 have upper end edges that are continuous with left and right edges in the X direction of the case upper surface 5, and front end edges that are continuous with left and right edges in the X direction of the case front surface 6. The left and right case side surfaces 7 and 8 have rear end edges that are continuous with the left and right edges of the case back surface 9 in the X direction, and lower end edges that are continuous with the left and right edges of the case bottom surface 10 in the X direction.

  A front opening / closing lid 11 and a rear opening / closing lid 12 are attached to the case upper surface 5 of the printer case 3. The front opening / closing lid 11 is rotated around the front edge portion and opened / closed, and the rear opening / closing lid 12 is rotated around the rear edge portion to open / close. A rectangular paper discharge port 13 having a predetermined width is formed between the front opening / closing lid 11 and the rear opening / closing lid 12. An opening / closing operation button 14 for opening / closing the rear opening / closing lid 12 is provided at the edge of the case upper surface 5 on the right side in the X direction of the paper discharge outlet 13. When the opening / closing operation button 14 is pushed downward, the rear opening / closing lid 12 is unlocked, and the rear opening / closing lid 12 is turned upward by an urging force such as a spring force. When the rear opening / closing lid 12 is opened, the roll paper storage unit for storing the roll paper is opened, so that the roll paper can be loaded into the roll paper storage unit.

  A power switch 15 and a reset switch 16 are provided on the case front surface 6 of the printer case 3. The power switch 15 switches the power on and off by being pushed. A rectangular power switch opening 17 is formed on the front surface 6 of the case, and the operation surface of the power switch 15 is located on the inner peripheral side of the power switch opening 17.

  The reset switch 16 is located on the right side of the center of the case front surface 6 in the X direction and on the left side of the power switch 15 in the X direction. A reset switch opening 18 is formed in the front surface 6 of the case, and the operation surface of the reset switch 16 is located on the inner peripheral side of the reset switch opening 18. The reset switch opening 18 is circular and smaller than the power switch opening 17. The reset switch 16 is operated by being pushed in with a pen tip or the like.

  A switch cover 21 that can cover the power switch 15 is attached to the front surface 6 of the case. The switch cover 21 includes a frame member 22 that is fixed to the case front surface 6 and surrounds the power switch 15, and a lid member 23 that is rotatably supported by the frame member 22. The frame member 22 is fixed to the front surface 6 of the case with an adhesive, whereby the switch cover 21 is fixed to the printer case 3. The lid member 23 rotates about the axis L extending in the X direction above the opening 24 on the inner peripheral side of the frame member 22.

  The opening 24 of the frame member 22 is larger than the power switch opening 17. As shown in FIG. 1B, the switch cover 21 is fixed to the front surface 6 of the case with the upper edge of the opening 24 of the frame member 22 aligned with the upper edge of the power switch opening 17. The reset switch 16 is located on the outer peripheral side of the frame member 22 and is detached from the switch cover 21. That is, the reset switch 16 is in a position that is not shielded by the lid member 23.

  As shown by a dotted line in FIG. 1B, the lid member 23 closes the opening 24 of the frame member 22 and shields the power switch 15 in an inoperable state, as shown in FIG. As indicated by the solid line, the opening 24 can be opened and moved between the open positions 23B where the shielding of the power switch 15 is released. When the lid member 23 is moved from the open position 23B to the closed position 23A, the lid member 23 is rotated forward as indicated by an arrow in FIG. Here, in a state where the lid member 23 is disposed at the open position 23B, the axis L passes through the lower end portion of the lid member 23 in the X direction. Therefore, the lid member 23 arranged at the open position 23B moves to the closed position 23A by its own weight. In a state where the lid member 23 is disposed at the closed position 23A, the axis L passes through the upper end portion of the lid member 23 in the X direction. Details of the switch cover 21 will be described later.

(Control system)
FIG. 2 is a schematic block diagram showing a control system of the printer 1. The printer 1 includes a power supply control unit 30 that receives a DC power supply of a predetermined voltage from the outside, a print processing unit 31 that performs printing, and an arithmetic processing unit 32 that drives and controls the print processing unit 31. The power control unit 30 includes a power switch 15. When the power is turned on by operating the power switch 15, the power control unit 30 supplies power supplied from the outside to the print processing unit 31 and the arithmetic processing unit 32. Supply.

  The print processing unit 31 is mainly configured of a print control unit 35 including a CPU, a ROM, a RAM, and the like. A communication interface 36 is connected to the input side of the print control unit 35. A print head 37 and a transport motor 38 are connected to the output side of the print control unit 35. The transport motor 38 is a drive source of a transport mechanism that transports a long recording paper fed from the roll paper along a transport path that passes through the print head 37.

  The arithmetic processing unit 32 has functions similar to those of a personal computer, and is configured around a central control unit 40 including a CPU, a ROM, a RAM, and the like. A communication interface 41, a plurality of USB ports 42, a VGA connector 43, a network connector 44, and the like are connected to the central control unit 40. The communication interface 41 of the arithmetic processing unit 32 is connected to the communication interface 36 of the print processing unit 31, so that the arithmetic processing unit 32 and the print processing unit 31 can communicate with each other. The USB port 42, the VGA connector 43, and the network connector 44 are mounted on a connector mounting portion (not shown) provided on the case back surface 9.

  The central control unit 40 is connected to an OS execution unit 45 that operates an OS (operating system), a printer driver execution unit 46 that operates a printer driver (driver software) that drives and controls the print processing unit 31, and a USB port 42. A device driver execution unit 47 that operates a device driver (driver software) that drives and controls peripheral devices is provided.

  The reset switch 16 inputs a reset signal to the print processing unit 31. The reset switch 16 is depressed when the printer 1 falls into an unrecoverable error state and cannot be printed. When the reset switch 16 is pushed and a reset signal is input to the print processing unit 31, the print processing unit 31 is reset. Thereby, the print processing unit 31 recovers its function. The reset is an initialization operation for returning the print processing unit 31 to the state when the power is turned on. When the reset switch 16 is pushed, the arithmetic processing unit 32 is not reset, and only the print processing unit 31 is reset.

  Here, in this example, the printer 1 includes a switch cover 21 that can shield the power switch 15 in an inoperable state. Therefore, it is possible to prevent the power switch 15 from being erroneously operated.

  On the other hand, the reset switch 16 is provided at a position that is not shielded by the lid member 23. Therefore, it is easy to operate the reset switch 16. Further, when the reset switch 16 is operated, the power switch 15 can be kept shielded by the lid member 23. Therefore, when the reset switch 16 is operated, the power switch 15 is erroneously operated. Can be prevented.

(Switch cover)
Next, the switch cover 21 will be described in detail. In the following, the switch cover 21 will be described based on the posture in which the switch cover 21 is fixed to the printer 1. Accordingly, the X direction is the width direction of the switch cover 21, the Y direction is the front-rear direction of the switch cover 21, and the Z direction is the up-down direction of the switch cover 21. 3A is a front view and a side view of the switch cover 21 in which the lid member 23 is disposed at the closed position 23A, and FIG. 3B is a switch cover in which the lid member 23 is disposed at the open position 23B. 21 is a front view and a side view of 21. FIG. FIG. 4A is a perspective view when the lid member 23 is viewed from the obliquely upper front, and FIG. 4B is a perspective view when the lid member 23 is viewed from the obliquely lower rear. FIG. 5A is a front view of the lid member 23 and a partially enlarged view around the support shaft, and FIG. 5B is a top view of the cover member 23 and a partially enlarged view around the support shaft. (C) is the side view of the cover member 23, and the elements on larger scale around the spindle.

  The switch cover 21 includes a frame member 22 and a lid member 23. Both the frame member 22 and the lid member 23 are made of resin. As shown in FIG. 3B, the frame member 22 includes a frame plate portion 51 having an opening 24 formed in the center and a vertical frame portion 51a of the frame plate portion 51 sandwiching the opening 24 in the X direction. A pair of support portions 52 projecting forward in the Y direction. A step portion 54 that protrudes forward is provided in a lower frame portion 51 b that is positioned below the opening 24 in the frame plate portion 51.

  The back surface of the frame plate portion 51 is a flat surface and serves as a fixed surface that is fixed to the case front surface 6 of the printer case 3. The pair of support portions 52 face each other in the X direction with the opening 24 interposed therebetween, and extend in the Z direction over the entire area of the vertical frame portion 51a. The axis L passes through the upper end portions of the pair of support portions 52 above the opening 24. A circular recess 53 that is recessed in the X direction is provided coaxially with the axis L at the upper end portion of the inward surfaces of the pair of support portions 52. The shape of the frame member 22 as viewed from the X direction is a trapezoid in which the upper and lower heights extend in the Z direction, and the shorter upper and lower dimensions are located in the front in the Y direction than the long lower dimensions.

  As shown in FIG. 3, the lid member 23 is disposed between the pair of support portions 52 in the X direction. As shown in FIG. 3A, the axis L passes through the upper end portion of the lid member 23 in the Z direction (orthogonal direction) when the lid member 23 is disposed at the closed position 23A. When the lid member 23 is disposed at the open position 23B, the axis L passes through the lower end portion of the lid member 23 in the Z direction, as shown in FIG.

  As shown in FIG. 4, the lid member 23 includes a rectangular lid body 55 located at the center portion in the Z direction in a state where the lid member 23 is disposed at the closed position 23A. The lid body 55 is plate-shaped and has a certain thickness. On the lower side of the lid main body 55, a plate-like knob 56 that is continuously inclined from the lower end edge of the lid main body 55 downward and forward is provided. When the lid member 23 is disposed at the closed position 23 </ b> A, the lid body 55 covers the opening 24 with the back surface 55 b facing the opening 24.

  A hook (locking portion) 57 is provided on the back surface 55 b of the lid body 55. The hook 57 extends rearward in the Y direction when the lid member 23 is disposed at the closed position 23A. The hook 57 has a flat plate portion 57a whose thickness direction is in the Z direction and a protrusion protruding downward from the center portion in the X direction at the rear end of the flat plate portion 57a in a state where the lid member 23 is disposed at the closed position 23A. 57b.

  In a state where the lid member 23 is disposed at the closed position 23A, a pair of projecting portions 58 projecting rearward in the Y direction are provided at both end edges in the X direction of the upper end portion of the lid body 55. The pair of protrusions 58 are plate-like, and the thickness direction is directed to the X direction. A connecting plate 59 that extends in the X direction and connects the pair of protrusions 58 is bridged above the pair of protrusions 58. The connecting plate 59 is continuously bent from the upper end edge of the lid main body 55 upward and backward.

  Each of the outward faces of the pair of protrusions 58 is provided with a support shaft 60 protruding in the X direction. The lid member 23 rotates around the axis L by inserting each of the pair of support shafts 60 protruding from the pair of protrusions 58 into the respective recesses 53 provided in the pair of support portions 52 of the frame member 22. It is supported by the frame member 22 in a movable state.

  Here, as shown in FIG. 5A and FIG. 5C, each spindle 60 has a direction away from the tip of the spindle 60 when the lid member 23 is disposed at the closed position 23A. A first inclined surface 61 that is inclined in a direction toward the lower end portion of the lid member 23 (a direction toward the knob 56) is provided. Further, as shown in FIGS. 5B and 5C, each support shaft 60 faces away from the tip of the support shaft 60 when the lid member 23 is disposed at the closed position 23A. A second inclined surface 62 that is inclined forward (in a direction away from the opening 24) is provided.

(Switch cover opening / closing operation and lid member fitting operation)
FIG. 6A is an explanatory diagram of the opening operation of the switch cover 21, and FIG. 6B is an explanatory diagram of the fitting operation of the lid member 23. In FIG. 6, one support portion 52 of the frame member 22 is omitted so that the inclination directions of the first inclined surface 61 and the second inclined surface 62 can be understood.

  As shown in FIG. 1, the switch cover 21 is used by being fixed to the printer case 3. That is, the rear surface of the frame plate portion 51 is bonded to the case front surface 6 in a state where the power switch 15 is surrounded by the frame member 22. When the switch cover 21 is closed, the lid member 23 is disposed at the closed position 23A and shields the power switch 15 from being inoperable.

  In the state where the lid member 23 is disposed at the closed position 23A, the lid body 55 covers the opening 24 from the front as shown in FIG. In this state, the lid main body 55 is fitted into the space inside the pair of support portions 52, and only the knob portion 56 projects forward from the pair of support portions 52. Further, in a state where the lid member 23 is disposed at the closed position 23 </ b> A, the hook 57 provided on the back surface 55 b of the lid body 55 is engaged with the step portion 54 of the frame member 22. Therefore, the lid member 23 is stable at the closed position 23A.

  When opening the switch cover 21, the operator pulls the knob 56 of the lid member 23 forward, and then rotates the lid member 23 upward about the axis L by about 180 °. Thereby, the cover member 23 is arrange | positioned in the open position 23B. When the lid member 23 is disposed at the open position 23B, the opening 24 of the frame member 22 is in an open state, so that the shielding of the power switch 15 by the lid member 23 is released and the power switch 15 can be operated. . In the state where the lid member 23 is disposed at the open position 23B, as shown in FIG. 3B, the knob 56 is positioned upward, and the back surface 55b of the lid body 55 faces forward in the Y direction. .

  Here, as shown in FIG. 6A, when the operator pulls the knob 56 of the lid member 23 forward to open the switch cover 21, the radius from the axis L to the lid member 23. A large force F toward the outside of the direction may be applied. In such a case, damage such as breakage of the support shaft 60 may occur.

  In this example, since the first inclined surface 61 is provided on each support shaft 60 in this example, the operator pulling the lid member 23 exerts a large force on the lid member 23 from the axis L toward the outside in the radial direction. When F is added, the support shaft 60 is detached from the recess 53. That is, since the first inclined surface 61 is formed in the direction in which the pulling force F is applied to the support shaft 60, the support shaft 60 is easily removed from the recess 53, and is removed from the recess 53 before the support shaft 60 is damaged. Therefore, damage to the support shaft 60 can be avoided.

  When the support shaft 60 comes out of the recess 53 and the cover member 23 is detached from the frame member 22, each support shaft 60 of the cover member 23 is connected to each of the pair of support portions 52 using the second inclined surface 62. It can be inserted into the recess 53. That is, as shown in FIG. 6B, the back surface 55b of the lid member 23 is directed to the side opposite to the opening 24 and the second inclined surface 62 is directed to the frame member 22, and the lid is closed in the Z direction. The support shaft 60 of the member 23 and the concave portions 53 of the pair of support portions 52 of the frame member 22 are set to the same height position, and then the lid member 23 is pushed into the frame member 22. Thereby, since each spindle 60 is inserted into each recessed part 53 from the 2nd inclined surface 62 side, the fitting operation | work which supports the cover member 23 to a pair of support part 52 becomes easy. Further, it is possible to prevent the support shaft 60 from being damaged during the fitting operation.

(Other embodiments)
In addition, the inclination direction of the 2nd inclined surface 62 provided in each spindle 60 is a direction different from the 1st inclined surface 61, Comprising: The direction away from the axis line L toward the direction away from the front-end | tip of the said spindle 60 Any direction can be used.

  Further, by providing a support shaft that protrudes toward the lid member 23 on each of the pair of support portions 52, and providing a recess that can receive each support shaft on the cover member 23, the pair of support portions 52 causes the cover member 23 to be attached. You may support so that rotation is possible. However, when such a configuration is adopted, if the support shaft is damaged, the switch cover 21 cannot be repaired unless the frame member 22 fixed to the printer case 3 is replaced. Therefore, it is preferable to employ a configuration in which the support member 60 is provided on the lid member 23.

  Furthermore, the switch cover 21 may include a double-sided tape in which one adhesive surface is attached to a fixed surface of the frame member 22 to the printer case 3. If it does in this way, switch cover 21 can be fixed to printer case 3 with a double-sided tape.

  The reset switch 16 is shielded by the lid member 23 from being inoperable when the lid member 23 is disposed at the closed position 23A, and is shielded by the lid member 23 when the lid member 23 is disposed at the open position 23B. May be canceled. FIG. 7 is a front view illustrating another example of a printer including the switch cover 21. Since the printer 1A of FIG. 7 has the same configuration as the printer 1, the same reference numerals are given to the opposing components, and the description thereof is omitted.

  In the printer 1 </ b> A shown in FIG. 7, both the power switch 15 and the reset switch 16 are surrounded by the frame member 22 when the switch cover 21 is fixed to the case front surface 6 of the printer case 3. In this way, it is possible to prevent both the power switch 15 and the reset switch 16 from being erroneously operated.

  In the above example, the axis L that the pair of support parts 52 rotatably supports the lid member 23 extends in the X direction, but the switch cover 21 faces sideways and the axis L extends in the Z direction. The switch cover 21 may be attached to the printer case 3.

  In the above example, the pair of support portions 52 of the frame member 22 supports the lid member 23 so as to be rotatable, but the pair of support portions 52 support the lid member 23 so as to be slidable in the Z direction. The lid member 23 may be configured to move between the upper open position 23B and the lower close position 23A.

  Further, in the above example, the switch cover 21 is mounted on the printer 1, but the switch cover of the present invention is used in order to prevent erroneous operation of the power switch 15 in electronic devices such as a scanner, a facsimile, a copying apparatus, and a power supply apparatus. 21 can be installed.

1 · 1A ·· Printer 3 ·· Printer case 5 ·· Case top surface 6 ·· Case front surface 7 ·· Case side surface 9 ·· Case back surface 10 ·· Case bottom surface 11 ·· Front open / close lid 12 .. Rear open / close lid, 13 .. Paper discharge port, 14 .. Open / close operation button, 15 .. Power switch, 16 .. Reset switch, 17 .. Opening for power switch, 18. , 21... Switch cover, 22... Frame member, 23... Lid member, 23 A... Closed position, 23 B... Open position, 24. , 32 .. Operation processing unit, 35 .. Print control unit, 36 .. Communication interface, 37 .. Print head, 38 .. Conveyance motor, 40 .. Central control unit, 41 .. Communication interface, 42. USB port, 4 ..VGA connector, 44 ..Network connector, 45 ..OS execution part, 46 ..Printer driver execution part, 47 ..Device driver execution part, 51 ..Frame plate part, 51 a ..Vertical frame part, 51 b -Lower frame part, 52-Support part, 53-Recess, 54-Stepped part, 55-Cover body, 55b-Back, 56-Pick part, 57-Hook (locking part), 57a .. Flat plate part, 57b .. Projection, 58 .. Projection part, 59 .. Connecting plate, 60 .. Support shaft, 61 .. Inclined surface, 62 .. Inclined surface, F.

Claims (8)

A frame member fixed to the surface of the case of the electronic device and surrounding the power switch;
Between a closed position that blocks the opening on the inner peripheral side of the frame member and shields the power switch in an inoperable state, and an open position that allows the power switch to be operated by opening the opening. A lid member supported by the frame member in a movable state;
A switch cover characterized by comprising: In claim 1,
The frame member includes a pair of support portions facing each other on both sides of the opening.
The lid member is disposed between the pair of support portions, and is supported by the pair of support portions so as to be rotatable about an axis extending in a facing direction in which the pair of support portions are opposed to each other.
The axis passes through one end portion of the lid member in a direction orthogonal to the facing direction and the opening direction of the opening when the lid member is disposed at the closed position;
The lid member is provided with a pair of support shafts that protrude coaxially with the axis toward the sides of the pair of support portions,
A switch cover characterized in that each support portion is provided with a recess for supporting each support shaft in a rotatable state. In claim 2,
Each support shaft has a first inclination that inclines in a direction toward the other end portion of the lid member in a direction away from the tip of the support shaft when the lid member is disposed at the closed position. A switch cover characterized in that a surface is provided. In claim 3,
Each support shaft is provided with a second inclined surface that is inclined in a direction different from the first inclined surface, and is inclined in a direction away from the axis toward the direction away from the tip of the support shaft. Switch cover characterized by In claim 4,
The second inclined surface is inclined in a direction away from the opening toward a direction away from the tip of the support shaft when the lid member is disposed at the closed position. Switch cover. In any one of claims 2 to 5,
When the lid member is disposed at the closed position, a locking portion that can be locked to the frame member is provided on the other end side portion of the lid member in the orthogonal direction. And switch cover. In any one of claims 1 to 6,
A switch cover comprising a double-sided tape having one adhesive surface affixed to a fixing surface of the frame member to the case. A printer case,
A power switch;
A switch cover according to any one of claims 1 to 8,
The printer, wherein the switch cover surrounds the power switch with the frame member fixed to the surface of the printer case.

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