JP2018034357A - Printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing device that can suppress a cover from deforming due to shock by falling or the like.SOLUTION: A printing device 1 has a housing portion 40 that houses a roll around which a printing medium is wound inside an enclosure 10 and a thermal head for performing printing on the printing medium. The enclosure 10 comprises: a first cover 2 having an opening part 2A for opening the housing portion 40; a second cover 3 for covering openably and closably the opening part 2A of the first cover 2; and a first contact portion 5 which is provided in at least part of the opening part 2A of the first cover 2, and can come into contact with an inner wall of the second cover 3 in a closed state where the second cover 3 is closed. In the closed state, when force toward a front side acts on the first cover 2, the first contact portion 5 comes into contact with the inner wall of the second cover 3 to restrain the opening part 2A of the first cover 2 from deforming toward outside in a right and left direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a printing apparatus.

  Portable printing devices have been proposed. Patent Document 1 discloses a printing apparatus including a belt clip. For example, the user can carry and use the printing apparatus by attaching the belt clip to the waist belt.

Japanese Patent Laying-Open No. 2015-160427

  When the printing apparatus is attached or detached, the user may accidentally drop the printing apparatus. In this case, depending on the height of the printing apparatus when dropped, the cover of the printing apparatus may be deformed due to the impact of dropping. If the cover is deformed, for example, a problem may occur in the operation of an operation member for opening and closing the cover, which is not preferable.

  An object of the present invention is to provide a printing apparatus that suppresses deformation of a cover due to an impact such as dropping.

  A printing apparatus according to the present invention is formed from a box-shaped housing and an inside of the housing from an approximately center in the first direction to an end portion on one side in the first direction, and the print medium is wound. A printing apparatus having a storage unit for storing the roll and a printing mechanism for printing on the print medium, wherein the housing includes a first cover having an opening for opening the storage unit, and the first cover. A second cover that covers the opening of the first cover so as to be openable and closable; and is provided on at least a part of the opening of the first cover and contacts the inner wall of the second cover with the second cover closed. A first abutting portion that can be contacted, and when the force in the direction toward the other side of the first direction acts on the first cover in the closed state, the opening of the first cover is The first contact portion is deformed to the outside in the second direction orthogonal to the first direction. Which comprises suppressing by abutting the inner wall of the serial second cover.

  In the printing apparatus, the first cover is provided with the first contact portion. The first contact portion can contact the inner wall of the second cover in the closed state. Here, when the printing apparatus falls with one side in the first direction facing down, a force in the direction toward the other side in the first direction may act on the first cover due to the impact of the fall. . In this case, the opening of the first cover tends to be deformed outward in the second direction. On the other hand, in the printing apparatus, the first abutting portion abuts against the inner wall of the second cover, so that the deformation of the opening of the first cover is suppressed. Therefore, the printing apparatus can suppress the deformation of the first cover due to the impact of dropping by the first contact portion.

  In the present invention, the first contact portion may be provided on one side of the first direction with respect to the opening in the opening direction. When a force in the direction toward the other side in the first direction acts on the first cover, the strength on one side in the first direction among the openings is weak and easily deformed. On the other hand, a 1st contact part is provided in the one side of a 1st direction rather than the approximate center of a 1st direction among opening parts. For this reason, the printing apparatus can suppress the deformation | transformation of the site | part of the opening part which is easy to deform | transform by the 1st contact part.

  In the present invention, the opening is substantially rectangular when viewed from a third direction orthogonal to the first direction and the second direction, and the first contact portion is the first of the openings. It may be provided on one side and the other side in two directions, respectively. In this case, the first contact portion is provided on both sides of the opening in the second direction. Therefore, the printing apparatus has two second states that when the force in the direction toward the other side in the first direction acts on the first cover, both sides in the second direction of the opening of the first cover are deformed outward. It can suppress effectively by 1 contact part.

  In the present invention, the second cover includes a plate-like lid plate portion and side plate portions that are connected to both sides of the lid plate portion in the second direction and extend in a direction intersecting the lid plate portion. The first contact portion protrudes from the first cover to the second cover side by a first length in the closed state, and the side plate portion of the second cover is the lid plate in the closed state. The first cover may extend from the portion toward the first cover by a second length, and the first length may be substantially half of the second length. In this case, the printing apparatus can abut the first abutting portion on a substantially half portion of the second length of the side plate portion of the second cover. For this reason, the area of the part which a 1st contact part contact | abuts in a side plate part can be enlarged. Therefore, the printing device is configured to prevent the first cover opening portion from deforming outward in the second direction when a force in the direction toward the other side in the first direction acts on the first cover. It can suppress effectively by the contact part of a side plate part.

  In the present invention, a portion of the first contact portion opposite to the first cover side may be chamfered. In this case, when closing the second cover in the open state, the second cover is guided by the chamfered portion of the first contact portion. Therefore, the printing apparatus can smoothly close the second cover in the opened state without being caught by the first contact portion.

  In the present invention, the printing mechanism is provided in a thermal head, a platen that presses the print medium against the thermal head, a platen bearing that rotatably supports the platen, and the second cover, and holds the platen bearing. A platen holder, and a second abutting portion provided on the second cover, the second abutting portion being abuttable from the other side of the first direction with respect to the abutted portion provided on the first cover, When the force in the direction toward the one side in the first direction is applied to the second cover in the closed state, the second cover and the platen holder move to the one side in the first direction. The second abutting portion may be suppressed by abutting against the abutted portion from the other side in the first direction. In the printing apparatus, when the platen holder moves to one side in the first direction, the platen may be detached from the platen holder. In contrast, in the printing apparatus, the second cover and the platen holder move to one side in the first direction by the second contact portion coming into contact with the contacted portion from the other side in the first direction. Can be suppressed. Therefore, the printing apparatus can suppress the removal of the platen from the platen holder by the second contact portion and the contacted portion.

  In the present invention, the contacted portion may be the first contact portion. In this case, the printing apparatus can use the first abutting portion as an object with which the second abutting portion abuts. Therefore, the printing apparatus does not need to be newly provided with a member corresponding to the contacted portion, so that the configuration can be simplified.

  In the present invention, the second contact portion may be provided on both sides of the second cover in the second direction. In this case, the printing apparatus can suppress the movement of the second cover and the platen holder to one side in the first direction on both sides in the second direction. Therefore, the printing apparatus can effectively suppress the platen holder from coming off the platen by appropriately suppressing the second cover and the platen holder from moving to one side in the first direction.

1 is a perspective view of a printing apparatus 1 (closed state). It is a perspective view of printing device 1 (open state). It is the figure which looked at the printing apparatus 1 (open state) from the upper side. FIG. 3 is a perspective view of the printing apparatus 1 (excluding the second cover 3). It is sectional drawing (except the 2nd cover 3) which looked at the AA line of FIG. 1 from the arrow direction. 4 is a perspective view of a second cover 3. FIG. It is the figure which looked at the 2nd cover 3 from the diagonally right front side. It is the figure which looked at the 2nd cover 3 from the lower side. It is the figure which expanded a part of FIG. FIG. 3 is a perspective view of the printing apparatus 1 (a state in which a second cover 3 is omitted). It is sectional drawing which looked at the AA line of FIG. 1 from the arrow direction. It is sectional drawing which looked at the BB line of FIG. 1 from the arrow direction. FIG. 4 is a diagram illustrating forces F11, F12, and F21 that act when the printing apparatus 1 is dropped. It is a figure which shows a mode that the right wall part 23 of the printing apparatus 1 deform | transforms when the 1st contact part 5 is not provided.

<Printing apparatus 1>
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The printing apparatus 1 is a thermal printing apparatus capable of printing on a print medium (thermal paper). The printer 1 can be driven by a battery. For example, the printing apparatus 1 is used by being carried by a user who is working by being attached to a belt via a belt clip (not shown). The printing apparatus 1 can be connected to an external terminal (not shown) via a USB (registered trademark) cable. The printing apparatus 1 can print characters, graphics, and the like on a print medium based on print data received from an external terminal. The external terminal is a general-purpose personal computer (PC). The lower right side, upper left side, upper right side, lower left side, upper side, and lower side in FIG. 1 are respectively defined as the right side, left side, rear side, front side, upper side, and lower side of the printing apparatus 1.

  As shown in FIGS. 1 to 3, the printing apparatus 1 includes a housing 10. The housing | casing 10 has a substantially rectangular parallelepiped box shape long in the front-back direction. The housing 10 includes a first cover 2 and a second cover 3.

<First cover 2>
The first cover 2 has respective wall portions from the front side, the rear side, the left side, the right side, the lower side, and the upper side of the housing 10 to the front side from the approximate center in the front-rear direction. As shown in FIGS. 1 and 2, a display portion 22 </ b> D and a switch 22 </ b> B are provided on the front wall portion (hereinafter referred to as “front wall portion 22”). The display unit 22D can display characters printed on the print medium, setting information, and the like. The switch 22B can input instructions for various operations of the printing apparatus 1. A lever hole 23H and a battery holding portion 23B are provided in the right wall portion (hereinafter referred to as “right wall portion 23”). The lever hole 23H is a rectangular through hole extending in the vertical direction. The lever 23L protrudes rightward from the lever hole 23H. The lever 23L is movable in the vertical direction along the lever hole 23H. The lever 23L switches between opening and closing of the second cover 3 described later. The battery holding unit 23 </ b> B accommodates a battery that is a power source of the printing apparatus 1 and holds the accommodated battery.

  A main chassis (not shown) is disposed below the rear end portion 21A of the upper wall portion (hereinafter referred to as “upper wall portion 21”). The main chassis supports a motor (not shown) and the like. The main chassis supports the lever 23L so as to be movable up and down. As shown in FIG. 4, the main chassis has an inner wall portion 27 extending downward from the end portion 21 </ b> A of the upper wall portion 21. Of the inner wall portion 27, a cutting portion 21C is provided below the end portion 21A. The cutting unit 21 </ b> C is a blade that can cut a printed portion of the print medium. A thermal head 21P is provided below the cutting portion 21C. The thermal head 21P prints characters and the like by heating the print medium. The cutting part 21C and the thermal head 21P extend in the left-right direction.

  The main chassis further includes a support portion 7. The support portion 7 includes a support portion 7A extending from the right end portion of the inner wall portion 27 toward the rear side, and a support portion 7B extending from the left end portion of the inner wall portion 27 toward the rear side. The support portion 7 supports a restriction mechanism 9 described later. Details of the support portion 7 will be described later. As shown in FIG. 3, the main chassis rotatably supports the gear 70 on the front side of the support portion 7B. The gear 70 is a spur gear. The rotation shaft of the gear 70 extends in the left-right direction. The gear 70 is rotated by a motor supported by the main chassis.

  As shown in FIG. 4, a portion on the rear side of the upper wall portion 21 in the upper end portion of the right wall portion 23 is referred to as an “end portion 23 </ b> A”. The end portion 23A extends linearly from the right end portion of the end portion 21A of the upper wall portion 21 to the rear side, curves downward, and extends downward. Hereinafter, the curved portion of the end portion 23A is referred to as a “curved portion 231”. The end portion 23A bends to the rear side at the lower end portion of the curved portion 231, and extends toward the rear side. The curved portion 231 is disposed on the rear side of the center of the end 23A in the front-rear direction. Of the upper end portion of the left wall portion (hereinafter referred to as “left wall portion 24”) of the housing 10, the portion on the rear side of the upper wall portion 21 is referred to as “end portion 24A”. The end 24A has the same shape as the end 23A. The end portion 24 </ b> A has a bending portion 241 corresponding to the bending portion 231.

  An upper end portion 25A of the rear wall portion of the housing 10 (hereinafter referred to as “rear wall portion 25”) extends in the left-right direction across the rear end portions of the end portions 23A and 24A. It extends in a straight line. The wall portion 25 is provided with two support portions 251 that protrude above the end portion 25A. The support portion 251 on one side protrudes upward from the vicinity of the right end portion of the end portion 25A, and the support portion 251 on the other side protrudes upward from the vicinity of the left end portion of the end portion 25A. Each support portion 251 supports a shaft portion 252 extending in the left-right direction. Each shaft portion 252 extends inward from the corresponding support portion 251. A spring 253 is attached to each shaft portion 252.

  A portion surrounded by the end portions 21A, 23A, 24A, and 25A forms an opening 2A. The opening 2 </ b> A is formed in the upper part from the substantially center of the first cover 2 in the front-rear direction to the rear end. As shown in FIG. 3, the shape when the opening 2A is viewed from above is a substantially rectangular shape having end portions 21A, 23A, 24A, and 25A as sides. The opening 2 </ b> A opens the accommodating portion 40 in the first cover 2. The accommodating portion 40 is formed from the center in the front-rear direction to the rear end portion in the housing 10. The accommodating portion 40 is a space surrounded by the inner wall portion 27, the right wall portion 23, the left wall portion 24, the rear wall portion 25, and the lower wall portion of the housing 10. The holder 4 is fixed to the accommodating portion 40. The holder 4 holds a roll (not shown) around which the printing medium is wound so as to be rotatable from both sides in the left-right direction.

<First contact portion 5>
As shown in FIG. 4, the first contact portion 51 is provided in the vicinity of the curved portion 231 of the end portion 23A of the right wall portion 23 among the end portions forming the opening 2A. The first contact portion 51 is connected to the inner wall of the right wall portion 23 and protrudes above the end portion 23A. The first contact portion 51 is plate-shaped. Each surface of the first contact portion 51 faces in the left-right direction. An end portion of the first contact portion 51 opposite to the right wall portion 23 side, in other words, an upper end portion 51 </ b> A of the first contact portion 51 is curved so as to extend in parallel with the bending portion 231. Hereinafter, the length between the end portion 23A of the right wall portion 23 and the upper end portion 51A of the first contact portion 51 is referred to as a “first length L1”. The ridge line at the upper right corner of the upper end 51A is chamfered (see FIG. 12). The front end portion of the first contact portion 51 is disposed slightly rearward of the front and rear direction substantially center of the end portion 23A. The rear end portion of the first contact portion 51 is disposed slightly in front of the rear end portion of the end portion 23A.

  The first contact portion 52 is provided in the vicinity of the curved portion 241 of the end portion 24A of the left wall portion 24 among the end portions forming the opening 2A. The first contact portion 52 is connected to the inner wall of the left wall portion 24 and protrudes above the end portion 24A. The first contact portion 52 has a symmetrical relationship with the first contact portion 51. The upper end portion 52 </ b> A of the first contact portion 52 corresponds to the upper end portion 51 </ b> A of the first contact portion 51. Hereinafter, the first contact portions 51 and 52 are collectively referred to as “first contact portion 5”. The first contact portion 5 is provided on both the left and right sides with the opening 2A interposed therebetween. The first abutment portion 5 is provided on the rear side of the opening 2A substantially from the center in the front-rear direction and extends in the front-rear direction.

<Regulatory mechanism 9>
The support portion 7 of the main chassis supports the restriction mechanism 9. The restriction mechanism 9 has restriction members 91 and 92. The regulating members 91 and 92 are plate-like members. Each surface of the regulating members 91 and 92 faces in the left-right direction. The restricting member 91 is disposed in the vicinity of the right end portion of the inner wall portion 27, and the restricting member 92 is disposed in the vicinity of the left end portion of the inner wall portion 27. The regulating members 91 and 92 are separated in the left-right direction. A protruding portion 91 </ b> A that protrudes to the front side is provided at the upper end portion of the regulating member 91. A protruding portion 92 </ b> A that protrudes to the front side is provided at the upper end portion of the regulating member 92. The upper ends of the protrusions 91A and 92A are inclined obliquely downward from the rear side toward the front side. The restricting members 91 and 92 are connected by a connecting portion (not shown) provided at the lower end.

  As shown in FIG. 5, the lower end portion of the regulating member 91 is rotatably supported by the shaft portion 70A held by the support portion 7A. The shaft portion 70A extends in the left-right direction. The protrusion 230L provided on the left side surface of the lever 23L (see FIG. 1) moves up and down in response to an operation on the lever 23L. The shaft portion 70B extending in the left-right direction moves up and down in response to the vertical movement of the protrusion 230L. The left end portion of the shaft portion 70 </ b> B is inserted into a hole (not shown) provided at the rear end portion of the regulating member 91. As the shaft portion 70B moves up and down, the restricting member 91 rotates about the shaft portion 70A. In addition, according to the rotation of the regulating member 91, the regulating member 92 also rotates in the same direction. The regulating members 91 and 92 are urged counterclockwise by a spring (not shown) as viewed from the right side.

  In addition, the rotation direction demonstrated below shall show the direction (clockwise or counterclockwise) in the state seen from the right side unless there is particular limitation. A state in which the restricting members 91 and 92 are rotated in the counterclockwise direction in accordance with the biasing force of the spring is referred to as a “restricted state” (see FIGS. 4 and 5). A state where the restricting members 91 and 92 are rotated in the clockwise direction against the biasing force of the spring is referred to as an “unrestricted state”.

  When the lever 23L moves upward, the regulating members 91 and 92 rotate counterclockwise, and the protrusions 91A and 92A move forward. In a state where the lever 23L has moved to the uppermost position, the restricting members 91 and 92 are in a restricted state. As shown in FIG. 4, in the restricted state, the protruding portion 91A is disposed on the upper side of the recessed portion 71A provided on the upper end portion of the supporting portion 7A. The protruding portion 92A is disposed on the upper side of the recessed portion 72A provided at the upper end portion of the support portion 7B. On the other hand, when the lever 23L moves downward, the regulating members 91 and 92 rotate in the clockwise direction, and the protruding portions 91A and 92B move to the rear side. With the lever 23L moved to the lowest position, the restricting members 91 and 92 are in an unrestricted state. The protruding portion 91A is disposed on the rear side with respect to the concave portion 71A of the support portion 7A. The protruding portion 91B is disposed on the rear side with respect to the concave portion 72A of the support portion 7B.

<Second cover 3>
As shown in FIG.1 and FIG.2, the 2nd cover 3 can be opened and closed between the position which covers 2 A of openings from the upper side, and the position which does not cover. Hereinafter, a state where the second cover 3 covers the opening 2A (see FIG. 1) is referred to as a “second cover 3 is closed” or a “closed state”. A state where the second cover 3 does not cover the opening 2A (see FIG. 2) is referred to as “a state where the second cover 3 is opened” or “an open state”. In the following description, it is assumed that the second cover 3 is closed (see FIG. 1), and each direction of the printing apparatus 1 is applied to the second cover 3 for explanation. The lower side of the second cover 3 is also referred to as “the inner side of the second cover 3”, and the upper side of the second cover 3 is also referred to as “the outer side of the second cover 3”. As shown in FIG. 6, the second cover 3 includes a lid plate portion 31 and side plate portions 33 and 34.

  The lid plate portion 31 has a first portion 31A and a second portion 31B. The first portion 31A has a curved plate shape, and the second portion 31B has a flat plate shape. 31 A of 1st parts have the protrusion part 311 containing the hole into which the two axial parts 252 (refer FIG. 4) of the 1st cover 2 are each inserted in a rear side edge part. The second portion 31B extends from the front end portion of the first portion 31A toward the front side.

  As shown in FIG. 1, the cover plate portion 31 has a rectangular opening hole 312 in a portion extending between the first portion 31A and the second portion 31B. As shown in FIG. 6, a transparent plate 313 is provided on the inner wall of the lid plate portion 31 and the portion around the opening hole 312. The transparent plate 313 is fixed at its four corners with screws 313A. The transparent plate 313 covers the opening hole 312 from the inside. The transparent plate 313 has four projecting plates 313B that project downward. The lower end of each protruding plate 313B is curved in an arc shape.

  A platen holder 68 is provided in the vicinity of the front end portion of the inner wall of the second portion 31B. The platen holder 68 is fixed to the left and right sides with screws 681A. The platen holder 68 has shaft holding portions 68A on both the left and right sides of the front end. As shown in FIG. 7, each shaft holding portion 68 </ b> A has a recessed portion 68 </ b> B that is recessed toward the rear side. The platen holder 68 holds a platen body 60 described later rotatably.

  As shown in FIG. 6, the side plate portion 33 is connected to the right side of the lid plate portion 31. The side plate portion 33 has a first portion 33A and a second portion 33B. The first portion 33 </ b> A extends while curving downward from the right end of the cover plate portion 31. The second portion 33B extends from the lower end portion of the first portion 33A in a direction orthogonal to the lid plate portion 31. The side plate portion 34 is connected to the left side of the lid plate portion 31. The side plate portion 34 has a first portion 34A and a second portion 34B. The first portion 34 </ b> A extends while curving downward from the left end of the cover plate portion 31. The second portion 34B extends from the lower end portion of the first portion 34A in a direction orthogonal to the lid plate portion 31.

  Hereinafter, as illustrated in FIG. 7, the lengths of the side plate portions 33 and 34 in the vertical direction are referred to as “second length L <b> 2”. The 2nd length L2 respond | corresponds to the length of the up-down direction from the cover board part 31 to each front-end | tip of 2nd part 33B of the side board parts 33 and 34, 34B. The lengths of the first portions 33A and 34A in the vertical direction are referred to as “part length L21”. The lengths of the second portions 33B and 34B in the up-down direction are referred to as “part length L22”. The partial length L22 is slightly longer than the partial length L21. A value obtained by adding the partial lengths L21 and L22 is equal to the second length L2. The second length L2 is approximately twice the first length L1 (see FIG. 2).

<Second contact portion 8>
As shown in FIGS. 6 and 8, the second contact portion 81 is provided in the second portion 33 </ b> B of the side plate portion 33. The second abutting portion 81 protrudes toward the left side from a portion of the left side surface of the second portion 33B (hereinafter referred to as “the inner wall of the second portion 33B”) on the front side of the center in the front-rear direction. The second abutting portion 81 extends from the inner wall of the second portion 33B toward the left side and is separated between the two first plate-like portions and the left-side end portions of the two plate-like portions. A second plate-like portion extending in the front-rear direction. A second contact portion 82 is provided on the second portion 34 </ b> B of the side plate portion 33. The second abutting portion 82 protrudes toward the right side from the front side of the front-rear direction center of the right side surface of the second portion 34B (hereinafter referred to as “the inner wall of the second portion 34B”). The second contact portion 82 has a symmetrical relationship with the second contact portion 81. Hereinafter, the second contact portions 81 and 82 are collectively referred to as “second contact portion 8”. The second contact portion 8 is provided on both the left and right sides of the second cover 3.

<Platen body 60>
As shown in FIG. 7, the platen body 60 includes a platen 61, a platen shaft 62, platen bearings 63 and 64, and a gear 65. The platen 61 is a columnar member extending in the left-right direction. The platen shaft 62 is a cylindrical member having a smaller diameter than the platen 61. The platen shaft 62 extends in the left-right direction and penetrates the center of the platen 61 in the left-right direction. The left and right ends of the platen shaft 62 protrude outward from the left and right ends of the platen 61. The platen 61 is fixed to the platen shaft 62.

  As shown in FIG. 9, the platen bearing 63 is provided in a portion of the platen shaft 62 that protrudes to the right from the platen 61. The platen bearing 63 is a cylindrical member having a diameter larger than that of the platen shaft 62. The platen shaft 62 is inserted from the left side into a through hole penetrating the center of the platen bearing 63 in the left-right direction. The platen bearing 63 is rotatable with respect to the platen shaft 62. A retaining ring 62 </ b> A that is locked to the right end of the platen shaft 62 prevents the platen bearing 63 from being detached from the platen shaft 62.

  As shown in FIG. 7, the platen bearing 64 is provided in a portion of the platen shaft 62 that protrudes to the left from the platen 61. The platen bearing 64 has the same shape as the platen bearing 63. The gear 65 is provided on the left side of the platen bearing 64. The gear 65 is a spur gear having a larger diameter than the platen bearing 64. The gear 65 is fixed to the left end of the platen shaft 62.

  As shown in FIG. 9, the substantially half portion on the left side of the platen bearing 63 engages with the recess 68 </ b> B of the shaft holding portion 68 </ b> A on the right side of the platen holder 68. As shown in FIG. 7, a substantially half portion on the right side of the platen bearing 64 engages with the recess 68 </ b> B of the shaft holding portion 68 </ b> A on the left side of the platen holder 68. The platen bearings 63 and 64 hold the platen 61 rotatably while being engaged with the recesses 68B of the shaft holding portion 68A.

<Opening and closing operation of the second cover 3>
As shown in FIG. 2, the second cover 3 is rotatably supported by the first cover 2 around a shaft portion 252 inserted through the hole of the protruding portion 311. A spring 253 (see FIG. 4) attached to the shaft portion 252 biases the second cover 3 from the closed state (see FIG. 1) to the open state (see FIG. 2). When the second cover 3 rotates counterclockwise against the urging force of the spring 253, the second cover 3 covers the opening 2A of the first cover 2 from the upper side and is in a closed state (see FIG. 1). As shown in FIG. 1, in the closed state, the end 21 </ b> A of the upper wall portion 21 of the first cover 2 and the front end of the second portion 31 </ b> B of the lid plate portion 31 of the second cover 3 are close to each other. A discharge port 20 is formed between each. The print medium printed inside the printing apparatus 1 is discharged to the outside through the discharge port 20.

  As shown in FIG. 10, in the closed state, the platen 61 of the second cover 3 (see FIG. 6) has a thermal head 21 </ b> P (see FIG. 4) provided on the inner wall portion 27 (see FIG. 4) of the housing portion 40. Proximity to the rear side. When a printing medium is disposed between the platen 61 and the thermal head 21P, the printing medium can be pressed against the thermal head 21P. The gear 65 on the left side of the platen 61 meshes with a gear 70 (see FIG. 3) provided on the main chassis of the first cover 2. When the gear 70 rotates according to the rotation of a motor (not shown), the gear 65 and the platen 61 rotate in conjunction with each other. In this case, the platen 61 can transport the print medium toward the discharge port 20 while pressing the print medium against the thermal head 21P.

  As shown in FIG. 11, the platen bearing 63 on the right side of the platen 61 (see FIG. 10) engages with the recess 71A of the support portion 7A of the main chassis from above. The protrusion 91 </ b> A of the restriction member 91 in the restricted state contacts the platen bearing 63 from above. As shown in FIG. 10, the platen bearing 64 on the left side of the platen 61 engages with the recess 72A (see FIG. 4) of the support portion 7B of the main chassis from above. The protrusion 92A of the restricting member 92 in the restricted state contacts the platen bearing 64 from above. Accordingly, the movement toward the upper side of the platen body 60 is restricted by the restriction mechanism 9. The restriction mechanism 9 maintains the second cover 3 in the closed state, and restricts the second cover 3 from rotating toward the open state by the biasing force of the spring 253.

  As shown in FIG. 12, in the closed state, the first contact portion 5 of the first cover 2 protrudes toward the second cover 3 side. The second portion 33B of the side plate portion 33 of the second cover 3 and the second portion 34B of the side plate portion 34 respectively protrude from the lid plate portion 31 side to the first cover 2 side. The end portion 23A of the right wall portion 23 of the first cover 2 and the lower end portion of the second portion 33B of the side plate portion 33 of the second cover 3 are close to each other. The first contact portion 51 of the first cover 2 is disposed on the left side of the inner wall of the second portion 33 </ b> B of the side plate portion 33 of the second cover 3. Similarly, the end portion 24A of the left wall portion 24 of the first cover 2 and the lower end portion of the second portion 34B of the side plate portion 34 of the second cover 3 are close to each other. The first contact portion 52 of the first cover 2 is disposed on the right side of the inner wall of the second portion 34 </ b> B of the side plate portion 34 of the second cover 3.

  As shown in FIG. 11, in the closed state, the second contact portion 81 of the second cover 3 is on the front side of the front end portion of the first contact portion 51 of the first cover 2 and on the first cover 2. It is arranged above the end 23A of the right wall 23. Although not shown, the second contact portion 82 (see FIG. 6) of the second cover 3 is on the front side of the front end portion of the first contact portion 52 (see FIG. 10) of the first cover 2, and It arrange | positions above the edge part 24A (refer FIG. 10) of the left wall part 24 of the 1st cover 2. As shown in FIG.

  On the other hand, in the closed state, an operation of moving the lever 23L (see FIG. 1) downward is performed, and the case where the regulating members 91 and 92 are in an unrestricted state is illustrated. In this case, the protruding portion 91A of the regulating member 91 is disposed on the rear side with respect to the concave portion 71A of the supporting portion 7A, and the protruding portion 92A of the regulating member 92 is disposed on the rear side with respect to the concave portion 72A of the supporting portion 7B. The The direction toward the upper side of the platen bearings 63 and 64 is not restricted by the restriction mechanism 9. The second cover 3 rotates in the clockwise direction by the biasing force of the spring 253. When the second cover 3 rotates in the clockwise direction, the first cover 2 is in an open state (see FIG. 2).

<Main functions and effects of this embodiment>
The case where the printing apparatus 1 is dropped while the user is using the printing apparatus 1 with the rear wall portion 25 facing downward is illustrated. In this case, the impact of the drop acts directly on the rear wall portion 25 of the first cover 2. Specifically, as shown in FIG. 13, a force F <b> 11 in the direction from the rear wall portion 25 toward the front wall portion 22 acts on the first cover 2. The rear wall portion 25 that receives the force F11 is deformed in the forward direction, so that the outer side of the left and right ends 23A and 24A (see FIG. 2) of the opening 2A (see FIG. 2) of the first cover 2 is outside. A force F12 to be deformed is applied.

  For example, in the conventional printing apparatus in which the first contact portion 5 (see FIG. 2) is not provided, when the force F12 is applied to the first cover 2, the right wall portion 23 is outside as shown in FIG. There is a possibility of deformation. Although not shown, the same applies to the left wall 24. In particular, since the lever hole 23H is provided in the right wall portion 23, the strength of the right wall portion 23 is weakened accordingly. For this reason, when the right wall portion 23 is deformed, the lever 23L supported by the main chassis may be disengaged inward from the lever hole 23H. Furthermore, when the right wall portion 23 moves relative to the lever 23L along the direction of the force F11, the lever 23L may enter inside the right wall portion 23.

  On the other hand, in the printing apparatus 1 of the present embodiment, the first contact portion 51 is provided on the right wall portion 23 of the first cover 2, and the first contact portion 52 is provided on the left wall portion 24. In the closed state, the first contact portion 51 is disposed on the left side of the inner wall of the second portion 33B of the side plate portion 33 of the second cover 3, and the first contact portion 52 is disposed on the side plate portion 34 of the second cover 3. It arrange | positions on the right side of the inner wall of the 2nd part 34B. In this case, when the force F <b> 12 is applied to the opening 2 </ b> A of the first cover 2 as described above, the first contact portion 51 of the first cover 2 is in contact with the second portion 33 </ b> B of the side plate portion 33 of the second cover 3. The first contact portion 52 of the first cover 2 contacts the inner wall from the left side, and the first contact portion 52 contacts the inner wall of the second portion 34B of the side plate portion 34 of the second cover 3 from the right side. In this case, as shown in FIG. 13, even when F12 acts, the movement of the ends 23A and 24A of the first cover 2 to the outside is restricted, so that the deformation of the opening 2A is suppressed. In this way, the printing apparatus 1 can suppress the first contact portion 5 from deforming the first cover 2 due to a drop impact.

  When the force F11 is applied to the first cover 2, the strength of the rear side of the opening 2A, that is, the end portion 25A side, is lower than that of the front side, that is, the end portion 22A, and is easily deformed. On the other hand, in the printing apparatus 1, the first contact portion 5 is located behind the approximate center in the front-rear direction of the opening 2A, in other words, from the approximate center in the direction in which the ends 23A and 24A extend of the opening 2A. Is also provided on the end 25A side. That is, the first contact portion 5 is provided in a portion of the opening 2A that is weak and easily deformed. For this reason, the printing apparatus 1 can suppress the deformation | transformation of the site | part of the opening part 2A which is easier to deform | transform by the 1st contact part 5. FIG.

  The first contact portions 51 and 52 are provided on the left and right sides of the opening 2A, respectively. Therefore, in the case where the force F11 is applied to the first cover, the printing apparatus 1 causes the left and right sides of the opening 2A to be outward when the force F12 is applied to both the left and right sides of the opening 2A of the first cover 2. Deformation can be effectively suppressed by the first contact portions 51 and 52.

  In the printing apparatus 1, the first length L1 is a substantially half portion of the second length L2. The first length L1 is between the end portion 23A of the right wall portion 23 and the upper end portion 51A of the first contact portion 51, and between the end portion 24A of the left wall portion 24 and the upper end portion of the first contact portion 52. It corresponds to each length between 52A. The second length L2 corresponds to the length from the cover plate portion 31 to the respective tips of the second portions 33B and 34B of the side plate portions 33 and 34. In this case, the printing apparatus 1 includes the first cover portion 33 and 34 of the second cover 3 that overlaps with the first contact portion 5 in the front-rear direction in a region approximately half of the inner wall of the side plate portions 33 and 34. The 1 contact part 51 and 52 can be contact | abutted. That is, in the printing apparatus 1, the area of the side plate portions 33, 34 that overlap with the first contact portion 5 in the front-rear direction is approximately half of the entire area. It can be. Therefore, the printing apparatus 1 determines that the opening 2A is deformed outward in the left-right direction in response to the force F12 acting on the opening 2A of the first cover 2, and the first contact portions 51 and 52 and the side plate. It can suppress effectively by the contact part with the parts 33 and 34. FIG.

  The ridge line at the upper right corner of the upper end portion 51A of the first contact portion 51 and the ridge line at the upper left corner of the upper end portion 52A of the first contact portion 52 are chamfered. In this case, when the second cover 3 in the open state is closed, the second cover 3 is guided by the chamfered portion of the first contact portion 5. Therefore, the printing apparatus 1 can smoothly close the second cover 3 in the open state without being hooked on the first contact portion 5.

  When the user drops the rear wall portion 25 of the printing apparatus 1 with the rear wall portion 25 facing downward, the gravity acting on the second cover 3 is caused by the second portion 31B of the cover plate portion 31 as shown in FIG. Acts on the second cover 3 as a force F21 in the direction from the first portion 31A toward the first portion 31A. On the other hand, the force F <b> 11 acts on the first cover 2 against the first cover 2 as described above. In this case, the second cover 3 tends to move relative to the first cover 2 along the direction of the force F21. However, the relative movement of the platen body 60 held by the platen holder 68 in the direction of the force F21 is restricted by the regulating members 91 and 92 and the recesses 71A and 71B (see FIG. 11 and the like) of the support portion 7 of the main chassis. Be regulated. Therefore, the platen bearings 63 and 64 are disengaged from the concave portion 68B (see FIG. 7) of the platen holder 68 in accordance with the relative movement of the second cover 3 in the direction of the force F21, and the platen body 60 is detached from the platen holder 68. There is a possibility of separation.

  On the other hand, in the printing apparatus 1, as shown in FIG. 11, the second contact portion 8 is disposed on the front side with respect to the first contact portion 5. When the second cover 3 moves relative to the first cover 2 in the direction of the force F <b> 21, the second contact portion 8 contacts the front end portion of the first contact portion 5 from the front side. For this reason, it is suppressed that the 2nd cover 3 moves along the direction of force F21. Therefore, the printing apparatus 1 can suppress the removal of the platen body 60 from the platen holder 68 by the first contact portion 5 and the second contact portion 8.

  The first contact portion 5 suppresses deformation of the opening 2 </ b> A of the first cover 2, and at the same time suppresses the platen body 60 from being detached from the platen holder 68 by contacting the second contact portion 8. The printing apparatus 1 uses the first contact portion 5 that suppresses deformation of the opening portion 2A of the first cover 2 as a target to which the second contact portion 8 contacts. Accordingly, the printing apparatus 1 can simplify the configuration because it is not necessary to newly provide a target with which the second contact portion 8 contacts.

  The second contact portion 8 is provided on both the left and right sides of the second cover 3. In this case, the printing apparatus 1 can suppress the relative movement of the second cover 3 in the direction of the force F <b> 21 on both the left and right sides of the second cover 3. Therefore, the printing apparatus 1 can effectively suppress the platen holder 68 from being detached from the platen body 60 by appropriately suppressing the relative movement of the second cover 3.

<Modification>
The present invention is not limited to the above embodiment, and various modifications can be made. The printing method of the printing apparatus 1 is not limited to the thermal method, and may be another method (for example, a thermal transfer method, an inkjet method, or the like). In the closed state, the first contact portion 51 of the first cover 2 and the second portion 33B of the side plate portion 33 of the second cover 3 may be in contact with each other, and a slight gap is formed between them. May be. Similarly, in the closed state, the first contact portion 52 of the first cover 2 and the second portion 34B of the side plate portion 34 of the second cover 3 may be in contact with each other, or slightly between them. A gap may be formed. Further, in the closed state, the first contact portion 51 of the first cover 2 and the second contact portion 81 of the second cover 3 may be in contact with each other, and a slight gap is formed between them. May be. Similarly, in the closed state, the first contact portion 52 of the first cover 2 and the second contact portion 82 of the second cover 3 may contact each other, and a slight gap is formed between the two. May be.

  The first contact portion 51 may be provided over the entire area of the right end portion 23A of the opening 2A, or may be provided only on the front side of the end portion 23A with respect to the front-rear direction center. Further, a plurality of first contact portions 51 may be provided at the end portion 23A. The plurality of first contact portions 51 may be arranged at intervals in the front-rear direction. The same applies to the first contact portion 52.

  The shape when the opening 2A is viewed from the upper side is not limited to a substantially rectangular shape, and may be any other shape. For example, at least one of the end portions 21A, 23A, 24A, and 25A that form the opening 2A may be curved. The first contact portion 5 may be only one of the first contact portions 51 and 52. For example, the printing apparatus 1 may include the first contact portion 51 only on the right wall portion 23 in which the lever hole 23H is formed, and the first contact portion 52 may not be provided on the left wall portion 24.

  In the printing apparatus 1, the first length L <b> 1 of the first contact portion 5 of the first cover 2 may not be substantially a half of the second length L <b> 2 of the side plate portions 33 and 34 of the second cover 3. For example, the first length L1 may be substantially the same as the vertical portion length L22 of each of the second portions 33B and 34B of the side plate portions 33 and 34. The shape of the first contact portion 51 of the first cover 2 may be substantially the same shape as the inner wall of the side plate portion 33 including the first portion 33A and the second portion 33B of the second cover 3. In this case, in the closed state, the first contact portion 51 can be contacted over the entire vertical direction of the inner wall of the side plate portion 33. In this case, the first length L1 and the second length L2 are substantially the same. The same applies to the first contact portion 52.

  The chamfered shape on the upper side of the first contact portion 5 is not limited to the C chamfer, and may be an R chamfer. For example, the tip of the first contact portion 5 may be bent inward. In this case, even when the upper side of the first contact part 5 is not chamfered, the first contact part 5 can be prevented from being caught by the second cover 3 when the second cover 3 is closed.

  The platen holder 68 may hold the platen body 60 rotatably by engaging the platen shaft 62 with the recess 68B of the shaft holding portion 68A. In this case, the platen bearings 63 and 64 may not be provided on the platen body 60. The second contact portion 8 of the second cover 3 may be able to contact a portion of the first cover 2 that is different from the first contact portion 5. For example, a portion that contacts the second contact portion 8 may be newly provided in the support portion 7 of the main chassis. The second contact portion 8 may be only one of the second contact portions 81 and 82. The second contact portion 8 may not be provided.

<Others>
The front-rear direction of the printing apparatus 1 is an example of the “first direction” in the present invention. The lower side of the printing apparatus 1 is an example of “one side in the first direction” of the present invention. The upper side of the printing apparatus 1 is an example of “the other side in the first direction” of the present invention. The left-right direction of the printing apparatus 1 is an example of the “second direction” in the present invention. The vertical direction of the printing apparatus 1 is an example of the “third direction” in the present invention. The thermal head 21P is an example of the “thermal head” in the present invention.

1: Printing device 2: 1st cover 2 A: Opening part 3: 2nd cover 5, 51, 52: 1st contact part 8, 81, 82: 2nd contact part 10: Housing 20: Discharge port 21: Upper wall part 31: Cover plate part 33, 34: Side plate part 40: Accommodating part

Claims (8)

A box-shaped housing;
A housing portion that accommodates a roll around which a printing medium is wound, which is formed from an approximately center in the first direction to an end portion on one side in the first direction in the inside of the housing;
A printing device having a printing mechanism for printing on the printing medium,
The housing is
A first cover having an opening that opens the housing;
A second cover covering the opening of the first cover so as to be openable and closable;
A first abutting portion provided in at least a part of the opening of the first cover and capable of abutting against an inner wall of the second cover in a closed state in which the second cover is closed;
When the force in the direction toward the other side of the first direction is applied to the first cover in the closed state, the opening of the first cover is placed outside the second direction perpendicular to the first direction. The printing apparatus, wherein the deformation is suppressed by the first abutting portion coming into contact with an inner wall of the second cover. The first contact portion is
2. The printing apparatus according to claim 1, wherein the opening is provided on one side of the first direction with respect to a substantially center of the first direction. The opening is substantially rectangular when viewed from a third direction orthogonal to the first direction and the second direction;
The first contact portion is
The printing apparatus according to claim 1, wherein each of the openings is provided on one side and the other side in the second direction. The second cover is
A plate-shaped lid plate portion;
A side plate portion connected to both sides in the second direction of the lid plate portion and extending in a direction intersecting the lid plate portion;
The first contact portion protrudes from the first cover toward the second cover by a first length in the closed state,
The side plate portion of the second cover extends by a second length from the lid plate portion to the first cover side in the closed state,
The printing apparatus according to claim 1, wherein the first length is substantially half of the second length.   5. The printing apparatus according to claim 1, wherein, of the first contact portion, a side opposite to the first cover side is chamfered. The printing mechanism is
A thermal head,
A platen that presses the print medium against the thermal head;
A platen bearing that rotatably supports the platen;
A platen holder provided on the second cover and holding the platen bearing;
A second abutting portion provided on the second cover, the second abutting portion being abuttable from the other side in the first direction with respect to the abutted portion provided on the first cover;
When the force in the direction toward the one side in the first direction is applied to the second cover in the closed state, the second cover and the platen holder move to the one side in the first direction. 6. The printing apparatus according to claim 1, wherein the second abutting portion is restrained by abutting against the abutted portion from the other side in the first direction. .   The printing apparatus according to claim 6, wherein the contacted part is the first contact part.   The printing apparatus according to claim 6, wherein the second contact portion is provided on both sides of the second cover in the second direction.

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