Printing device

Abstract

To provide a printing device equipped with an electronic substrate, in which the number of components is reduced and an assembly procedure is simplified.SOLUTION: The printing device is equipped with a first frame 20 and an electronic substrate unit 60 provided in the first frame 20. The electronic substrate unit 60 has: a holder 63 which has a first surface 63a in the first frame 20 and a second surface 63b at the opposite side of the first surface 63a; a first substrate 61 held to oppose to the first surface 63a; and a second substrate 62 held to oppose to the second surface 63b and mounted on the first frame 20. The holder 63 has a first area A1 overlapping the first substrate 61 in a planar view and a second area A1 not overlapping the first substrate 61 in a planar view. Holding parts 63e2, 63f1, 63f2 and 63g which hold at least either of a ferrite core F and a harness H as predetermined electronic components are provided in the second area A2.SELECTED DRAWING: Figure 19

Description

[Technical field]

[0001] The present invention relates to a printing device having an electronic board. [Background technology]

[0002] In electronic devices such as printing devices, electronic boards are generally used as a configuration for performing control. This type of electronic board often includes multiple boards. In order to attach multiple boards, for example, Patent Document 1 discloses a holder for attaching a sub-board to a main board. This holder includes a frame capable of holding the sub-board, a positioning portion, and a fixing portion. With the sub-board fixed to the frame, the positioning portion is engaged with the positioned portion of the main board, and the fixing portion is fixed to the fixed portion of the main board. This allows the main board and the sub-board to be attached in an appropriate position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-139697 A (Fig. 7, etc.) Summary of the Invention [Problem to be solved by the invention]

[0004] However, in this type of electronic board, electronic components, harnesses, etc. are often attached to the board. In this case, the configuration disclosed in the above document requires the provision of components for holding the electronic components, harnesses, etc., which increases the number of components and complicates the assembly procedure.

[0005] An object of the present invention is to provide a printing device equipped with an electronic board, which allows for a reduction in the number of parts and a simplification of the assembly procedure. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the printing device of the present invention comprises a frame and an electronic board unit provided on the frame, the electronic board unit having a holder having a first surface on the frame side and a second surface opposite the first surface, a first board held opposite the first surface, and a second board held opposite the second surface and attached to the frame, the holder having a first region that overlaps with the first board in a planar view and a second region that does not overlap with the first board in a planar view, and the second region is provided with a holding portion that holds at least one of a predetermined electronic component and a harness.

[0007] In the printing device of the present invention, an electronic board unit is provided on a frame. The electronic board unit has a first board, a second board, and a holder, which are integrated to form a unit. The first board is attached to face a first surface of the holder, and the second board is attached to face a second surface of the holder. The second board is attached to the frame of the printing device, and the electronic board unit is fixedly disposed inside the printing device. According to the present invention, the two boards are unitized by the holder and attached inside the printing device, so that a common electronic board unit can be used universally regardless of the shape of, for example, a cover, casing, etc. of the printing device.

[0008] Moreover, the holder included in the electronic board unit is divided into a first region and a second region. A holding portion is provided in the second region. At least one of a predetermined electronic component and a harness is held in the holding portion. This eliminates the need to provide a separate component for holding the predetermined electronic component associated with the electronic board or the harness extending from the electronic component to the outside. As a result, it is possible to reduce manufacturing costs by reducing the number of components and simplifying the assembly procedure. Effect of the Invention

[0009] According to the present invention, in a printing device having an electronic board, it is possible to reduce the number of parts and simplify the assembly procedure. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view of a printing apparatus according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view of the printing device with the upper front cover and the like removed. [Diagram 3] FIG. 2 is a perspective view of the printing device with the upper front cover and first and second frames removed. [Figure 4] 2 is a perspective view of the printing device in a state in which the covers, the frame, the electronic board unit, and the lower case are assembled. FIG. [Diagram 5] 2 is a longitudinal sectional view of the printing device shown in FIG. 1 taken along a cutting line in the front-rear direction, and an enlarged view of a portion of the longitudinal sectional view. [Figure 6] 2 is a perspective view of an electronic board unit and a first frame provided in the printing device shown in FIG. 1. [Figure 7] 2 is a perspective view of a first frame in a state in which an electronic board unit provided in the printing device shown in FIG. 1 is fixed. [Figure 8] 8 is a perspective view of the first frame and the electronic board unit shown in FIG. 7 cut along the AA cutting line. [Figure 9] 8 is a perspective view of the first frame and the electronic board unit shown in FIG. 7 cut along the line BB. [Figure 10] 8 is a perspective view of the first frame and the electronic board unit shown in FIG. 7 cut along cutting line CC. [Figure 11] 8 is a longitudinal sectional view of the first frame and the electronic board unit shown in FIG. 7 taken along the line AA. [Figure 12] 8 is a longitudinal sectional view of the first frame and the electronic board unit shown in FIG. 7 taken along the line BB. [Figure 13] 8 is a longitudinal sectional view of the first frame and the electronic board unit shown in FIG. 7 taken along cutting line CC. [Figure 14] 8 is a plan view of the first frame and the electronic board unit shown in FIG. 7. [Figure 15] 8 is a rear view of the first frame and the electronic board unit shown in FIG. 7. [Figure 16] 2A to 2C are a left side view, a front view, a right side view, and a plan view of a holder in an electronic board unit provided in the printing device shown in FIG. [Figure 17] 2A to 2C are a perspective view, a rear view, and a bottom view of a holder in an electronic board unit provided in the printing device shown in FIG. [Figure 18] 2 is a perspective view of an electronic board unit included in the printing device shown in FIG. 1, seen diagonally from above and to the front right. [Figure 19] 2 is a perspective view of an electronic board unit included in the printing device shown in FIG. 1, seen diagonally from above and rear on the left. [Figure 20] 2A to 2C are six-sided views of an electronic board unit provided in the printing device shown in FIG. [Figure 21] 2 is a six-view diagram of an electronic board unit in a state in which a ferrite core and a harness are held by a holding portion of the electronic board unit included in the printing device shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An embodiment of the present invention will be described below with reference to the drawings. In the following description, the front and back directions, left and right directions, and up and down directions as viewed from the user of the printing device are defined as the front and back directions, left and right directions, and up and down directions as indicated by the arrows in each drawing.

[0012] <Printing device configuration> In FIG. 1, the printing device 1 is configured with a housing 10 having a substantially rectangular three-dimensional shape, and includes a lower case 11 as a main body, an upper front cover 12, and an upper rear cover 13 as an opening / closing cover.

[0013] The lower case 11 is provided with an operation panel section 14 on the front surface where various operation switches are arranged, and hook sections 15 for engaging both ends of a shoulder strap (not shown) are provided at the left and right corners extending from the front surface to the sides. The printing device 1 is used while being carried by a user, for example by hanging it on the shoulder with the shoulder strap.

[0014] Although not shown, the lower case 11 is provided with various connection parts such as a USB port and an RS-232C connector as communication means, which allows connection to a print data input terminal (for example, a personal computer or a barcode reader) as well as power supply. In addition to the above communication means, the printer 1 is equipped with various functions such as wired LAN, wireless LAN, and Bluetooth (registered trademark), and can print labels including variable data (text, barcode) simply by sending text data to the printer 1 using these various communication means. Labels to be printed can include labels used in various fields, such as item tag labels and shipping labels for manufacturing / logistics, food labeling labels and price tags for retail, and specimen labels and medicine notebook labels for medical use.

[0015] Fig. 2 shows a state in which the upper front cover 12, the operation panel unit 14, and the hook unit 15 have been removed from the state shown in Fig. 1. As shown in Fig. 2, a first frame 20 is provided in the front area inside the printing device 1. When the upper front cover 12 is attached (see Fig. 1), the first frame 20 is located below the upper front cover 12. As will be described later, a thermal head 21, a cutting blade 22, a detection unit 23, an electronic board unit 60, etc. are provided on the first frame 20 (see Fig. 5).

[0016] A second frame 30 is provided in a rear region inside the printing device 1 so as to be fixed to the rear of the first frame 20 (see FIG. 4). The second frame 30 is covered by an upper rear cover 13, and houses a roll 31 as described below (see FIG. 5). The upper rear cover 13 is supported at its rear end by the lower case 11 and is capable of swinging about this rear end as a fulcrum. In the state shown in FIG. 2, the upper rear cover 13 is in a closed state. The roll 31 can be attached and detached by swinging the upper rear cover 13 in an upward diagonal rearward direction from the closed state to open the upper rear cover 13.

[0017] 3 shows a state in which the first and second frames 20, 30 have been removed from the state shown in FIG. 2. As shown in FIG. 3, a sensor holder 40 is provided on the front side of the upper rear cover 13. A platen holder 41 and a sensor 42 are provided in the sensor holder 40. The platen holder 41 is provided on the front end of the upper rear cover 13 via the sensor holder 40, and rotatably supports a platen roller 43 having a rotation shaft extending in the left-right direction. When the upper rear cover 13 is in a closed state, the platen roller 43 transports the tape unwound from the roll 31 at a position facing the thermal head 21 (see FIG. 5). The sensor 42 is, for example, an optical reflection sensor, and is configured to detect the presence or absence of the tape transported by the platen roller 43.

[0018] A substantially rectangular parallelepiped recess 11a is provided in a front area of ​​the lower case 11. The recess 11a is recessed upward from the bottom surface and is capable of housing a battery 50 (see FIG. 5). An electronic board unit 60 is disposed above the recess 11a.

[0019] As shown in Fig. 4, the electronic board unit 60 is attached to the underside of the first frame 20, and the first frame 20 and the second frame 30 are respectively housed in the front and rear areas of the lower case 11. As a result, the electronic board unit 60 is interposed between the underside of the first frame 20 and the upper side of the recess 11a (see Fig. 5). The upper front cover 12 and the upper rear cover 13 are connected to the lower case 11 so as to cover the housed first frame 20 and second frame 30, respectively.

[0020] As shown in FIG. 5, which is a longitudinal cross-sectional view in the front-rear direction of FIG. 1, the battery 50 housed in the recess 11a of the lower case 11 supplies the charged power to each driving unit of the printer 1. The electronic board unit 60 arranged on the upper side of the recess 11a is substantially flat and is provided on the first frame 20 so as to be horizontal in the left-right direction and the front-rear direction. The electronic board unit 60 drives and controls the printer 1. As shown in the enlarged view of the circled area in FIG. 5, the thermal head 21 is provided on the rear side of the first frame 20 above the electronic board unit 60. The thermal head 21 extends in the left-right direction so as to face the platen roller 43, and prints characters on the thermal label by heating. A cutting blade 22 is provided on the upper side of the thermal head 21. The cutting blade 22 extends in the left-right direction and cuts off the printed portion of the tape.

[0021] The second frame 30 fixed to the rear of the first frame 20 houses a roll 31. The roll 31 is formed, for example, by a tape having a plurality of thermal labels discretely attached to a long backing paper, wound around a cylindrical core. The tape is an example of a print medium. The second frame 30 is provided with a support portion that supports both end faces of the roll 31 in the left-right direction. That is, the roll 31 is rotatably supported by the support portion with the axial direction facing the left-right direction.

[0022] The rear end of the upper front cover 12 and the front end of the upper rear cover 13 are spaced apart, and a discharge opening 16 is provided at this space. The printed tape that has been pulled out from the roll 31 is discharged from the discharge opening 16. A detection unit 23 including an optical sensor is provided in front of the cutting blade 22, and detects the presence or absence of the tape discharged from the discharge opening 16, i.e., the printed label in this embodiment.

[0023] Here, after creating a label using the desired print data, the user can grab the tip of the tape (label) discharged from the discharge port 16 and cut it off using the cutting blade 22. Even if a roll of thermal tape without a backing, such as a receipt, is used as the printing medium, the printed portion of the tape can be cut off using the cutting blade 22.

[0024] <Positional relationship between the first frame and electronic board unit> 6, the first frame 20 is provided with, in particular, an electronic board unit 60. The first frame 20 is a highly rigid member made of a fiber-reinforced resin material containing glass fiber or the like, and is provided with the above-mentioned components in addition to the electronic board unit 60. The electronic board unit 60 has a first board 61, a second board 62, and a holder 63.

[0025] The first board 61 and the second board 62 are flat plates having a substantially rectangular shape in a plan view in the up-down direction, and the area of ​​the first board 61 in a plan view is smaller than the area of ​​the second board 62. The first board 61 and the second board 62 have electronic components such as ICs mounted thereon, and are electrically connected to each other via a connection between a first connector 61a provided on the first board 61 and a second connector 62a provided on the second board 62. The second board 62 is also electrically connected to the detection unit 23 and the sensor 42 via a harness H (not shown). This allows the printing device 1 to be controlled.

[0026] The holder 63 is made of a resin material and has a first surface 63a and a second surface 63b. The first substrate 61 is held facing the first surface 63a on the first frame 20 side. The second substrate 62 is held facing the second surface 63b on the opposite side to the first surface 63a. With the first substrate 61 and the second substrate 62 held by the first surface 63a and the second surface 63b of the holder 63, respectively, the second substrate 62 is fixed from below to the lower side of the first frame 20 by three screws 71, 72, and 73.

[0027] Hereinafter, the positional relationship between the first frame 20 and the electronic board unit 60 in a state in which the electronic board unit 60 is fixed to the first frame 20 will be described with reference to FIGS.

[0028] As shown in Figs. 7 and 14, the first frame 20, which is a housing, has a front end surface 201, an upper side surface 202, a right end surface 203, and a left end surface 204. The first frame 20 has a substantially rectangular shape in a plan view in the up-down direction. As shown in Fig. 15, the electronic board unit 60 is disposed near the right front side of the first frame 20 so that the front end and the right end of the second board 62 are aligned with the front end surface 201 and the right end surface 203 of the first frame 20, respectively. The second board 62 has three through holes 71a, 72a, and 73a through which the screws 71, 72, and 73 can be inserted (see Figs. 18 and 19). The through holes 71a and 72a corresponding to the screws 71 and 72 are provided at the right rear corner and the left front corner of the second board 62, respectively. The through hole 73a corresponding to the screw 73 is located behind the approximate center of the second board 62 in the front-rear direction and in front of the screw 71. The through hole 73a corresponding to the screw 73 is located to the left of the approximate center of the second board 62 in the left-right direction and to the right of the screw 72. The first frame 20 has three screw holes that can be screwed with the screws 71, 72, and 73, as described below, at positions corresponding to the three through holes. The screws 71, 72, and 73 are screwed into the respective screw holes through the respective through holes 71a, 72a, and 73a of the second board 62, and the electronic board unit 60 is fixed to the first frame 20. Hereinafter, the vertical cutting lines passing through the screws 71, 72, and 73 in the front-rear direction in FIG. 7, FIG. 14, and FIG. 15 are referred to as the AA cutting line, the BB cutting line, and the CC cutting line.

[0029] As shown in Fig. 11, which is a vertical cross-sectional view taken along the line AA, and Fig. 8, which is a corresponding perspective view, the lower side of the first substrate 61 and the upper side of the second substrate 62 are in contact with the upper and lower ends of the frame-shaped portion 63c of the holder 63, respectively. The front end of the frame-shaped portion 63c of the holder 63 is interposed between the lower front end side of the first substrate 61 and the upper front end side of the second substrate 62 (see Fig. 19). The rear end of the frame-shaped portion 63c is interposed between the lower rear end side of the first substrate 61 and the upper part of the portion of the second substrate 62 that is forward of the screw 71 (see Fig. 18). Protrusions 63c1 extending downward from the vicinity of the rear end and the front end of the frame-shaped portion 63c, respectively, engage with the right rear and front parts of the second substrate 62.

[0030] The board support part 20a is provided at the approximate center in the front-rear direction of the first frame 20, rearward of the rear end of the frame part 63c. The board support part 20a extending downward from the upper side surface 202 has a screw hole that can be screwed from below, and the lower end is adapted to abut against the upper side of the second board 62. The second board 62 is fixed to the board support part 20a of the first frame 20 by the screw 71 through the through hole 71a. As a result, the first board 61 and the second board 62 are arranged to face each other approximately parallel to the first surface 63a of the holder 63 on the first frame 20 side and the second surface 63b on the opposite side, with the frame part 63c of the holder 63 interposed therebetween (see FIG. 6). Note that the area of ​​the holder 63 that overlaps with the first board 61 in a plan view is referred to as the first area A1 (see FIGS. 18 and 19).

[0031] As shown in Fig. 12, which is a vertical cross-sectional view taken along line BB, and Fig. 9, which is a corresponding perspective view, the upper side of the second substrate 62 faces the lower surface of the holding plate portion 63d of the holder 63. The holding plate portion 63d is formed integrally with the frame portion 63c so as to extend horizontally leftward from the left end of the frame portion 63c. The holding plate portion 63d does not overlap with the first substrate 61 in plan view, and is disposed at approximately the center of the second substrate 62 in the front-rear direction, on the left side of the second substrate 62. Note that the region of the holder 63 that does not overlap with the first substrate 61 in plan view is referred to as the second region A2 (see Figs. 18 and 19).

[0032] A through hole 73b is provided at the rear side of the holding plate portion 63d at a position overlapping with the through hole 73a of the second substrate 62 in the up-down direction. A board support portion 20b is provided at a substantially central portion of the first frame 20 in the front-rear direction and forward of the rear end of the holding plate portion 63d. The board support portion 20b extending downward from the upper side surface 202 has a screw hole that can be screwed from below, and is engaged at its lower end with the through hole 73a of the second substrate 62 while passing through the through hole 73b of the holding plate portion 63d. The second substrate 62 is fixed to the board support portion 20b of the first frame 20 by the screw 73 via the through hole 73a. As a result, the second substrate 62 is disposed to face the lower surface of the holding plate portion 63d in the second region A2 in a substantially parallel manner.

[0033] 13, which is a vertical cross-sectional view taken along the line CC, and the corresponding perspective view shown in FIG 10, the upper side of the second substrate 62 faces the lower surface of the holding plate 63d, similar to the arrangement along the line BB. The holding plate 63d and the second region A2 extend to the left beyond the line CC.

[0034] A board support portion 20c is provided on the front side of the first frame 20, further forward than the front end of the holding plate portion 63d. The board support portion 20c extending downward from the upper side surface 202 has a screw hole that can be screwed in from below, and its lower end is adapted to abut against the upper side of the second board 62. The second board 62 is fixed to the board support portion 20c of the first frame 20 by a screw 72 via a through hole 72a.

[0035] As described above, the lowermost second board 62 of the electronic board unit 60 is fixed to the board support portions 20a, 20b, and 20c of the first frame 20. The electronic board unit 60 is located below the first frame 20 so as to be surrounded by the front end face 201, the upper side face 202, the right end face 203, and the left end face 204.

[0036] <Electronic board unit configuration> Hereinafter, the configuration of the electronic board unit 60 fixed to the first frame 20 as described above will be described with reference to FIGS.

[0037] The electronic board unit 60 has a holder 63, a first board 61 held facing a first surface 63a of the holder 63, and a second board 62 held facing a second surface 63b of the holder 63 and attached to the first frame 20. As shown in Fig. 17(a) which is a perspective view of the holder 63 and Fig. 16(d) which is a plan view, the holder 63 is partitioned into a first area A1 (the above-mentioned "area overlapping with the first board 61 in a plan view") and a second area A2 (the above-mentioned "area not overlapping with the first board 61 in a plan view"). Note that the holder 63 may be configured by, for example, adhering or joining a first member consisting of the first area A1 portion and a second member consisting of the second area A2 portion.

[0038] The first area A1 of the holder 63 is provided with a frame-shaped portion 63c having a substantially rectangular shape in plan view. As shown in Figs. 16(a), (b), (c) and 17(b), which respectively show a left side view, a front view, a right side view and a rear view of the holder 63, the frame-shaped portion 63c has a predetermined width in the vertical direction. As shown in Figs. 16(d) and 17(c), which show a plan view and a rear view of the holder 63, the frame-shaped portion 63c has an outer shape corresponding to the first substrate 61 in plan view. As shown in Fig. 17(a), the upper end of the frame-shaped portion 63c is adapted to abut an edge portion on the lower side of the first substrate 61. At the front end and the right rear end of the frame-shaped portion 63c, protrusions 63c1 extending downward are provided. The lower end of the protrusion 63c1 is hook-shaped and can be engaged with the front side and the right rear side of the second substrate 62, respectively.

[0039] As shown in FIG. 17(a), the second area A2 of the holder 63 includes a holding plate 63d, a first holding portion 63e, a second holding portion 63f, and a harness support wall 63g. As shown in FIG. 16(d) and FIG. 17(c), the holding plate 63d formed integrally with the frame portion 63c is a substantially rectangular flat plate member. As shown in FIG. 17(a), the holding plate 63d extends substantially horizontally to the left from the substantially central portion in the front-rear direction at the left end of the frame portion 63c. A protrusion 63d1 extending downward is provided at the left end of the holding plate 63d. The lower tip of the protrusion 63d1 is hook-shaped and can be engaged with the left side of the second board 62.

[0040] The first holding portion 63e is a protrusion that holds a ferrite core F, which will be described later. As shown in Fig. 17(a), the first holding portion 63e is provided on the right side of the upper surface of the holding plate portion 63d, approximately in the center in the front-rear direction. As shown in Figs. 16(a) and 16(b), the first holding portion 63e as a protrusion has a base portion 63e1 and a horizontal portion 63e2.

[0041] The base 63e1 is erected above the holding plate 63d and constitutes the base of the protrusion. The horizontal portion 63e2 is connected to the upper end of the base 63e1 and protrudes substantially horizontally to the left to constitute the tip of the protrusion. That is, the protrusion of the first holding portion 63e has an inverted L-shape in front view as shown in FIG. 16(b). The horizontal portion 63e2 has a T-shape in plan view as shown in FIG. 16(d) and FIG. 17(c), and its tip protrudes to the left from the base 63e1. The through hole F1 of the annular ferrite core F can be inserted from the tip protruding to the left of the horizontal portion 63e2.

[0042] The second holding portion 63f is a rib that holds the harness H (see FIG. 19(b)) extending from the ferrite core F. As shown in FIG. 17(a), the second holding portion 63f has a first rib 63f1 and a second rib 63f2. The plate-like first rib 63f1 extending in the left-right direction is erected upward on the right side of the rear end of the holding plate portion 63d. The first rib 63f1 has a holding groove 63f11 that faces downward from its upper end. The holding groove 63f11 is capable of holding the harness H.

[0043] The second rib 63f2, which is a plate-like member substantially parallel to the first rib 63f1, is provided between the first holding portion 63e and the first rib 63f1. As shown in FIG. 16(d), the second rib 63f2 stands upward in front of the through hole 73b in the holding plate portion 63d. The right end 63f21 of the second rib 63f2 is located to the right of the through hole 73b and to the left of the harness support wall 63g. The right end 63f21 of the second rib 63f2 is capable of coming into contact with the harness H extending from the ferrite core F to the holding groove 63f11.

[0044] As shown in Fig. 17(a), the harness support wall 63g is a plate-like member that stands upward at the right end of the holding plate portion 63d (the left end of the frame portion 63c) and extends in the front-rear direction. The harness support wall 63g has an opening 63g1. The opening 63g1 is located at a lower portion of the harness support wall 63g at approximately the center in the front-rear direction, and is formed to straddle the base portion 63e1 and the horizontal portion 63e2 of the first holding portion 63e. When the ferrite core F is held by the first holding portion 63e, a restraining space 63g2 for the harness H is formed between the ferrite core F and the harness support wall 63g (see Figs. 19 and 21).

[0045] 18 to 21, the holder 63 configured as described above holds the first board 61, the second board 62, the ferrite core F, and the harness H. As shown in Fig. 18(a) and Fig. 19(a), the second board 62 is held by bringing the upper surface of the second board 62 close to the second surface 63b, which is the lower surface of the holder 63, so that the upper surface of the second board 62 faces the second surface 63b, and engaging the protrusions 63c1 and 63d1 with the second board 62. At this time, the board-to-board connector 62a extending along the right end of the upper surface of the second board 62 is located outside (on the right side) of the frame-shaped portion 63c.

[0046] The first connector 61a extending along the right end of the lower surface of the first substrate 61 is configured to be able to be connected and held with the second connector 62a. The lower surface of the first substrate 61 is brought close to the first surface 63a, which is the upper surface of the holder 63, so as to face each other, and the first connector 61a is connected to the second connector 62a while the upper end of the frame-shaped portion 63c is abutted against it. As a result, the first substrate 61 and the second substrate 62 are held by the holder 63, as shown in Figs. 18(b), 19(b), 20, and 21. The frame-shaped portion 63c of the holder 63 is interposed between the first substrate 61 and the second substrate 62, and the first substrate 61 and the second substrate 62 are supported so as to overlap each other approximately parallel to each other. In the holder 63, this overlapping region becomes the first region A1.

[0047] In the second region A2 of the holder 63 where the first substrate 61 does not overlap in a plan view, the lower surface of the holding plate portion 63d faces the upper surface of the second substrate 62, and the upper surface of the holding plate portion 63d is exposed. The ferrite core F and the harness H are held by the horizontal portion 63e2 (first holding portion 63e) provided on the upper surface of the holding plate portion 63d, the first rib 63f1 and the second rib 63f2 (second holding portion 63f), and the harness support wall 63g. The harness H is wound around the annular ferrite core F several times to reduce noise generated in the harness H. As shown in FIGS. 19(a) and 19(b), the ferrite core F is held by the first holding portion 63e with the through hole F1 in the radial center inserted into the horizontal portion 63e2.

[0048] The harness H is configured to electrically connect the detection unit 23 and the sensor 42 to the second board 62. As shown in FIG. 19(b) and FIG. 21, the harness H extending rearward from the ferrite core F inserted into the horizontal portion 63e2 is interposed and held in the holding groove 63f11 in the first rib 63f1. The harness H on the way from the ferrite core F to the holding groove 63f11 abuts against the right end 63f21 of the second rib 63f2. As a result, the harness H extends from the ferrite core F to the first rib 63f1 in a bent manner without overlapping with the through hole 73b. Furthermore, the harness H extending forward passes above the horizontal portion 63e2 and is restrained by the restraining space 63g2 formed between the left side surface of the harness support wall 63g and the right side surface of the ferrite core F.

[0049] <Effects of the embodiment> As described above, in the printing device 1 of this embodiment, the electronic board unit 60 is provided on the first frame 20. The electronic board unit 60 has a first board 61, a second board 62, and a holder 63, which are integrated to form a unit. The first board 61 is attached to face the first surface 63a of the holder 63, and the second board 62 is attached to face the second surface 63b of the holder 63. The second board 62 is attached to the first frame 20 of the printing device 1, so that the electronic board unit 60 is fixedly disposed inside the printing device 1. According to this embodiment, the two boards 61 and 62 are attached in a unitized state by the holder 63 inside the printing device 1, so that the common electronic board unit 60 can be used universally regardless of the shape of the cover, casing, etc. of the printing device 1, for example.

[0050] Further, the holder 63 included in the electronic board unit 60 is divided into a first area A1 (an area where the first board 61 overlaps) and a second area A2 (an area where the first board 61 does not overlap). The frame-shaped portion 63c provided in the first area A1 has an outer shape corresponding to the first board 61 attached to the upper part of the holder 63, and the first board 61 can be firmly and stably attached. The second area A2 is provided with a holding portion (a first holding portion 63e, a second holding portion 63f, and a harness support wall 63g). The holding portion holds a ferrite core F and a harness H as electronic components. This eliminates the need to provide separate components for holding the ferrite core F associated with the electronic board and the harness H extending from the ferrite core F to the outside. As a result, it is possible to reduce the manufacturing cost by reducing the number of components and simplifying the assembly procedure.

[0051] Furthermore, if the cover of the printing device 1 is to be provided with a structure for supporting the ferrite core F or a structure for routing the harness H, a special design for the cover is required. In contrast, in this embodiment, the ferrite core F and the harness H are held by the holding portion of the holder 63, so the above-mentioned structures for the cover are not required. Therefore, versatility can be improved.

[0052] In the electronic board unit 60, the first board 61 and the second board 62 are connected and held to each other via the first connector 61a and the second connector 62a provided at the right end, respectively, and the frame-shaped portion 63c of the holder 63 is interposed between the first board 61 and the second board 62. That is, the first board 61 and the second board 62 are held by the first connector 61a, the second connector 62a, and the frame-shaped portion 63c of the holder 63. Here, if the first board 61 and the second board 62 are held only by the first connector 61a and the second connector 62a, a so-called cantilever structure is formed, and the postures of the first board 61 and the second board 62 become unstable. However, in this embodiment, the postures of the first board 61 and the second board 62 can be stably held.

[0053] With the above configuration, according to this embodiment, in a printing device having an electronic board, it is possible to reduce the number of parts and simplify the assembly procedure.

[0054] In particular, in this embodiment, the holding portion includes a first holding portion 63e that holds a predetermined electronic component (such as the ferrite core F) and a second holding portion 63f that holds the harness H. By providing both the first holding portion 63e and the second holding portion 63f as the holding portion, it is possible to reliably hold both the predetermined electronic component (such as the ferrite core F) and the harness H.

[0055] In particular, in this embodiment, the electronic component to be held by the first holding portion 63e is a circular ferrite core F. The protrusion serving as the first holding portion 63e is inserted substantially horizontally into the through hole F1 at the radial center of the ferrite core F. This allows the ferrite core F to be stably held. When vibration or impact is applied from the outside, the harness H wound around the ferrite core F is appropriately elastically deformed, thereby mitigating the vibration and impact. Furthermore, when vibration or impact is applied from the outside, the ferrite core F and the boards 61 and 62 move together, so that damage and deterioration of durability due to collision and interference between them can be suppressed.

[0056] In particular, in this embodiment, the second holding portion 63f includes two ribs, a first rib 63f1 and a second rib 63f2. The first rib 63f1 has a holding groove 63f11, and the harness H extending from the ferrite core F into which the protrusion of the first holding portion 63e is inserted and held as described above is held by the holding groove 63f11. The second rib 63f2 is provided in the middle portion from the ferrite core F to the first rib 63f1, and the harness H extending from the ferrite core F to the first rib 63f1 can be held by abutting against the right end 63f21 of the second rib 63f2. The holding function of the first rib 63f1 and the second rib 63f2 for the harness H extending from the ferrite core F reduces the load on the ferrite F side of the harness H and maintains its soundness even when the harness H is subjected to vibration or impact from the outside. In addition, when vibration or impact is applied, the ferrite core F can be prevented from moving in the direction of coming off, that is, a slip-out prevention effect is achieved.

[0057] In particular, in this embodiment, the protrusion of the first holding portion 63e has a so-called inverted L-shape having a base portion 63e1 and a horizontal portion 63e2. The horizontal portion 63e2 is inserted substantially horizontally into the through hole F1 of the ferrite core F at the upper portion of the base portion 63e1, thereby realizing the above-mentioned holding function of the ferrite core F. With the above-mentioned structure, even if the harness H is routed not under the horizontal portion 63e2 (i.e., below the inverted L-shape) but over the horizontal portion 63e2, the harness can be restrained and stably held in the restraint space 63g2 between the harness support wall 63g and the ferrite core F. By having the harness H route over the horizontal portion 63e2, the height direction distance from the holding plate portion 63d can be made larger than when the harness H is routed under the horizontal portion 63e2, so that noise generated in the harness H can be reduced.

[0058] In the above description, when the external dimensions or sizes are described as "same", "equal", "different", etc., the description does not mean the strict meaning. In other words, "same", "equal", and "different" mean "substantially the same", "substantially equal", and "substantially different", allowing for design and manufacturing tolerances and errors.

[0059] In addition to the above, the methods according to the above embodiments and their modifications may be used in appropriate combination.

[0060] Although not specifically illustrated, the present invention can be implemented with various modifications without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0061] 1 Printing device 20 1st Frame 60 Electronic Board Unit 61 First board 62 Second board 63 Holder 63a 1st page 63b 2nd side 63c Frame-shaped part 63d Holding plate part 63e 1st holding part 63e1 base 63e2 Horizontal part 63f 2nd holding part 63f1 1st Rib 63f11 Retaining groove 63f2 2nd Rib 63f21 right end 63g Harness support wall 63g1 opening 63g2 restricted space F Ferrite core F1 through hole H harness

Claims

1. A frame, an electronic board unit provided on the frame; Equipped with The electronic board unit includes: a holder having a first surface on the frame side and a second surface on the opposite side to the first surface; a first substrate held opposite the first surface; a second substrate held opposite the second surface and attached to the frame; having The holder includes: a first region that overlaps with the first substrate in a plan view and a second region that does not overlap with the first substrate in a plan view; a holding section for holding at least one of a predetermined electronic component and a harness is provided in the second area of ​​the printing device, The holding portion is A first holding portion that holds the predetermined electronic component; A second holding portion that holds the harness; Including, The predetermined electronic component is a substantially annular ferrite core around which the harness is wound, The first holding portion is A protrusion that is inserted substantially horizontally into a through hole in the radial center of the ferrite core and that holds the ferrite core. A printing device comprising:

2. The second holding portion is a first rib having a holding groove for holding a harness extending from the ferrite core into which the protrusion is inserted; a second rib provided between the ferrite core and the first rib along an extension direction of the harness, the second rib extending from the ferrite core to the first rib in a bent manner and capable of contacting the harness; 2. The printing device according to claim 1, further comprising:

3. The protrusion is a base portion provided upright upward from a holding plate portion formed integrally with a frame-shaped portion having an outer shape corresponding to the first substrate in a plan view; a horizontal portion connected to an upper end of the base portion and inserted into the through hole of the ferrite core; having The holder further includes: A printing device as described in claim 1, characterized in that the harness support wall is erected on the retaining plate portion, has an opening at the lower part that spans above the base portion or the horizontal portion, and forms a restraining space for the harness between the harness support wall and the ferrite core.

4. A frame, an electronic board unit provided on the frame; Equipped with The electronic board unit includes: a holder having a first surface on the frame side and a second surface on the opposite side to the first surface; a first substrate held opposite the first surface; a second substrate held opposite the second surface and attached to the frame; having The holder includes: a first region that overlaps with the first substrate in a plan view and a second region that does not overlap with the first substrate in a plan view; The second region is provided with a first holding portion that holds a ferrite core around which the harness is wound. A printing device comprising:

5. The second region is provided with a second holding portion that holds the harness.

5. The printing apparatus according to claim 4.

6. The ferrite core has a substantially circular ring shape, The first holding portion is a protrusion that is inserted substantially horizontally into a through hole in a radial center portion of the ferrite core and that holds the ferrite core.

6. The printing apparatus according to claim 5.

7. The second holding portion has a first rib having a holding groove that holds the harness extending from the ferrite core into which the protrusion is inserted.

7. The printing apparatus according to claim 6.

8. The second retaining portion is a second rib provided between the ferrite core and the first rib along the extension direction of the harness, and has a second rib that can abut against the harness extending in a curved manner from the ferrite core to the first rib.

8. The printing apparatus according to claim 7.

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