JP5471994B2 - Portable printer - Google Patents

Description

  The present invention relates to a portable printer driven by a battery power source.

  As a portable printer driven by a battery power source, for example, a printer described in Patent Document 1 is known. This conventional portable printer has a battery storage chamber for storing a battery power source and a battery chamber cover for closing the battery storage chamber.

  The battery chamber cover is configured to be detachable from the battery storage chamber. That is, the battery chamber cover has a locking claw portion (claw portion) that fits into a locking hole provided at one end portion of the battery storage chamber at one end portion along the longitudinal direction of the battery power source. The other end along the longitudinal direction has an elastic engagement portion (leaf spring) that engages with an engaged portion provided at the other end of the battery storage chamber while being elastically deformed. doing. In the battery chamber cover, first, the locking claw portion at one end is fitted into the locking hole of the battery storage chamber to lock the one end, and in this state, the other end is connected to the battery storage chamber. The elastic engagement portion is elastically deformed by being pushed in and engaged with the engaged portion of the battery storage chamber, thereby being attached to the battery storage chamber.

JP 2009-295512 A

  However, with only the locking engagement structure at both end portions along the longitudinal direction, the battery chamber cover may not be easily attached to the battery chamber at the intermediate portion along the longitudinal direction. That is, since the portable printer is carried around by the user, the portable printer may be inclined depending on the storage location during or after the transport. Depending on the posture, the weight of the battery power stored in the battery chamber may be reduced. In some cases, the cover may be pushed in the direction of pushing the outer surface. Further, when the wire of the harness connecting the battery power source and the inside of the printer is bent in the battery chamber, the reaction force due to the bending resistance may be applied in the direction of pushing the battery chamber cover to the outer surface side as described above. Especially when the battery compartment cover is made of resin, etc., the rigidity of the resin is reduced when the above-mentioned accommodation place is in a high temperature environment, and it is caused by the pushing force caused by the weight of the battery power source or the reaction force of the harness wire. There is a possibility that the battery chamber cover is bent toward the outer surface side so that the battery chamber cover is lifted from the battery chamber in the intermediate portion in the longitudinal direction existing between both ends in the longitudinal direction.

  An object of the present invention is to provide a portable printer capable of preventing the battery chamber cover from being bent or lifted to the outer surface side.

  In order to achieve the above object, the first invention comprises a platen roller for conveying a printing paper, a thermal line head for performing desired printing on the printing paper conveyed by the platen roller, and a longitudinal direction. And a battery storage chamber for storing a battery power source for driving the platen roller and the thermal line head, the platen roller and the thermal line head. A portable printer having a device body containing a battery body cover and a battery chamber cover configured to be detachable from the battery storage chamber, wherein the battery storage chamber is disposed in the longitudinal direction of the battery storage chamber. A locking hole provided at one end of the battery, and a engaged hole provided at the other end of the battery storage chamber in the longitudinal direction. And one side locked portion and the other side locked portion respectively provided on one side and the other side in the short side direction of the battery storage chamber, and the battery chamber cover includes: Provided at one end in the longitudinal direction of the battery chamber cover, and provided at the other end in the longitudinal direction of the battery chamber cover; Arranged in a substantially staggered manner so that the elastic engagement portion that engages with the engaged portion while being elastically deformed, and the position along the longitudinal direction are different from each other except at the one end portion and the other end portion. And a plurality of locking protrusions including at least one first protrusion and at least one second protrusion that are respectively locked to the one side locked portion and the other side locked portion. It is characterized by having.

In the first invention of this application, the printing paper is driven by the platen roller, and desired printing is performed on the conveyed printing paper by the thermal line head. The platen roller and the thermal line head are driven by electric power from a battery power source, and the battery power source is stored in the battery storage chamber of the device main body.
The battery storage chamber storing the battery power supply is covered and closed by attaching the battery chamber cover. For this attachment, a locking hole and an engaged portion are respectively provided at one end and the other end of the battery storage chamber along the longitudinal direction (longitudinal direction of the battery power source; hereinafter the same), A locking claw portion and an elastic engagement portion are respectively provided at one end and the other end along the longitudinal direction of the chamber cover. Thus, the latching claw portion of the battery chamber cover is latched in the latching hole of the battery storage chamber at the one end portion along the longitudinal direction, and the elastic engagement of the battery chamber cover at the other end portion along the longitudinal direction. The joint portion engages with the engaged portion of the battery storage chamber, and the battery chamber cover is attached to the battery storage chamber by the locking engagement structure at both ends in the longitudinal direction.

  And in this application 1st invention, in order to strengthen the fixing structure in the intermediate part along the said longitudinal direction, positions other than the said longitudinal direction both ends (one side edge part and the other side edge part) of a battery chamber cover In addition, a plurality of locking projections are provided. The plurality of locking protrusions include at least one first protrusion and at least one second protrusion. The first protrusion is locked to one side locked portion located on one side of the battery storage chamber in the short direction (the short direction of the battery power source, the same applies hereinafter), and the second protrusion is short in the battery storage chamber. It is locked to the other side locked portion located on the other side in the hand direction. In this way, by realizing a locking structure between the battery chamber cover and the battery storage chamber on one side and the other side in the short direction at portions other than the both ends in the longitudinal direction described above, it can occur in the intermediate portion in the longitudinal direction. Further, it is possible to prevent the battery chamber cover from being bent or lifted to the outer surface side.

  The first protrusions and the second protrusions are arranged in a substantially zigzag pattern so that the positions along the longitudinal direction are not the same and are different from each other. Accordingly, when the user removes the battery chamber cover from the state in which the battery chamber cover is mounted, the resistance generated by the locking structure using the protrusions is dispersed, so that the user can easily remove the battery chamber cover. Can be removed.

  According to a second invention, in the first invention, the plurality of locking protrusions are any one of the one side region in the longitudinal direction or the other side region in the longitudinal direction of the battery chamber cover. It is characterized by being unevenly distributed.

  When the user attaches the battery chamber cover to the battery storage chamber, first, the locking claw portion is fitted into the locking hole at one end portion along the longitudinal direction. Thereafter, while maintaining the fitting state, the user engages the engaged portion while pressing the elastic engaging portion with a finger at the other side end portion along the longitudinal direction and elastically deforming it. In this way, when mounting is performed with the fixed structure at both ends along the longitudinal direction, when the user quickly mounts or when the pressing force is insufficient, the above lifting state is completely resolved There is a possibility that a part of the plurality of locking projections positioned in the middle between the both end portions is not locked or is in a semi-locked state (incompletely locked state).

  In the second invention of the present application, avoiding the central portion in the longitudinal direction where the floating height due to the warp is the highest as described above, and in the one side region or the other side region in the longitudinal direction where the floating height is relatively low, The locking projection is arranged. As a result, even if the above incompletely locked state occurs, the raised height of the locking protrusions that are not locked (or in a semi-locked state) can be kept low. As a result, the user can easily correct the original completely locked state by pressing the locking protrusion in the unlocked state (or in the semi-locked state) again.

  According to a third invention, in the second invention, the plurality of locking projections are unevenly arranged in the region on the other side in the longitudinal direction corresponding to the elastic engagement portion of the battery chamber cover. It is characterized by being.

  As described above, when the battery compartment cover is mounted, the elastic engagement portion is engaged with the engaged portion by the pressing force of the user's finger after the engagement claw portion is first fitted in the engagement hole. Match. In this way, by disposing a plurality of locking projections on the same side as the elastic engagement portion that is finally pressed with a finger at the time of mounting, the locking projections are simultaneously pressed when the elastic engagement portion is pressed. The battery chamber cover can be smoothly mounted by applying pressure.

  Conversely, when removing the battery chamber cover from the battery storage chamber, the user first elastically deforms the elastic engagement portion to release the engagement, and then removes the locking claw portion from the locking hole. In this way, by arranging a plurality of locking projections on the same side as the elastic engagement portion that is first operated with a finger when removed, when the elastic engagement portion is elastically deformed, the locking projection is also pulled simultaneously. The battery chamber cover can be removed smoothly by applying a force.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, when the battery power source is stored in the battery storage chamber, a wire of a harness is connected to the other side portion in the longitudinal direction of the battery power source, The locking projection is characterized in that it is unevenly arranged in the other side region of the harness in the longitudinal direction of the harness in the wire.

  By arranging a plurality of locking projections on the same side as the wire of the harness that applies a reaction force that pushes out the battery chamber cover to the outer surface side as described above, the reaction force can be reliably pressed down, It is possible to prevent the battery chamber cover from being bent or lifted to the outer surface side.

  According to a fifth aspect of the present invention, in any one of the second to fourth aspects, the plurality of locking protrusions include two first protrusions and one second protrusion, along the longitudinal direction. The staggered arrangement is alternately arranged in the order of one of the two first protrusions, the second protrusion, and the other of the two first protrusions.

  As a result, the battery chamber cover can be prevented from being lifted up in a balanced manner in each of the plurality of locking projections. Further, by suppressing the total number of the locking protrusions to three, the resistance generated by the locking structure when the user removes the battery chamber cover is surely suppressed, and the user can easily and easily remove the battery chamber cover. Can do.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the one-side locked portion and the other-side locked portion are each one side in the longitudinal direction of the opening of the battery storage chamber. It is the rib continuously extended along the said longitudinal direction from the edge part to the other side edge part, It is characterized by the above-mentioned.

  Accordingly, the ribs provided to prevent the battery power source in the battery storage chamber from sliding down due to its own weight are used to lock the first protrusion and the second protrusion, thereby preventing the battery chamber cover from being lifted. be able to.

  According to the present invention, it is possible to prevent the battery chamber cover from being bent or lifted to the outer surface side.

1 is a perspective view illustrating an external configuration of a portable printer according to an embodiment of the present invention. It is a sectional side view by the II-II section in Drawing 1 showing the internal structure of a portable printer. It is the disassembled perspective view seen from the front side diagonally upward direction showing the internal structure of a portable printer. It is the disassembled perspective view seen from the back side slanting upper direction showing the internal structure of a portable printer. It is a perspective view showing the detailed structure inside a top cover. It is a cross-sectional view of a portable printer showing the structure near the first boss part and the second boss part. It is the perspective view which looked at the portable printer from the back side diagonally upper direction showing the state which removed the battery chamber cover and opened the battery storage chamber. It is a horizontal sectional view of a portable printer. It is the perspective view seen from the left diagonal upper direction showing the detailed structure of a battery chamber cover. It is the perspective view seen from the right diagonal upward direction showing the detailed structure of a battery chamber cover. It is a principal part enlarged top view seen from the A direction in FIG. It is a cross-sectional view by the BB 'cross section in FIG. FIG. 12 is a cross-sectional view taken along the line CC ′ in FIG. 11 and a cross-sectional view taken along the line DD ′.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  With reference to FIG. 1, an external configuration of a portable printer 1 according to an embodiment of the present invention will be described. In the following description, the lower left direction in FIG. 1 is front, the upper right direction is rear, the upper left direction is left, and the lower right direction is right.

  The portable printer 1 prints print data received from an external device (not shown) such as a PC terminal or a mobile phone via wired communication or wireless communication on a printing paper. The portable printer 1 can be driven by using a rechargeable battery 10 (see FIG. 2 and the like described later) as a power source, and can be carried and used in various places.

  The portable printer 1 is provided with a substantially rectangular parallelepiped housing 100 that is made of a resin material and that forms the outer shell of the apparatus. The housing 100 includes a top cover 101 that constitutes the upper part of the outer shell of the apparatus, an under cover 102 that constitutes the lower part of the outer shell of the apparatus, and a cover member 103 that can be opened and closed on the upper front side of the top cover 101. At the time of printing, the printing paper is inserted into the insertion opening 104 formed between the top cover 101 and the cover member 103. The inserted printing paper is guided to a press-contact portion P (see FIG. 2) between a platen roller 111 and a thermal line head 112, which will be described later, by a guide member 120 provided below the insertion port 104. The gas is discharged from a discharge port 107 formed between the member 103 and the under cover 102.

  The internal structure of the portable printer 1 will be described with reference to FIG.

  A platen roller 111 and a thermal line head 112 are provided in the housing 100 of the portable printer 1. The platen roller 111 is rotatably supported by a pair of side chassis members 130L and 130R (see FIG. 3 and the like described later) provided inside the housing 101, and is rotationally driven by a drive motor 11 (not shown). The paper to be printed is conveyed by The thermal line head 112 is provided on a heat radiating plate 114 provided with a shaft member 113 at the rear end, and the heat radiating plate 114 can be rotated around the shaft member 113 by the side chassis members 130L and 130R. It is supported. The main chassis member 150 provided on the inner surface of the under cover 102 is provided with a plurality of coil springs 115 that urge the heat sink 114 that supports the thermal line head 112 toward the platen roller 111. . As a result, the thermal line head 112 can be brought into pressure contact with the platen roller 111, contacts the platen roller 111 with a predetermined pressure during printing, and performs desired printing on the printing paper inserted therebetween.

  During normal printing, by inserting the printing paper into the insertion port 104 with the cover member 103 closed, the printing paper is conveyed by the platen roller 111 while being guided by the guide member 120, and the thermal line head. The desired printing is performed by 112. When a paper jam or the like occurs, the platen roller 111 is released from the thermal line head 112 by opening the cover member 103, and the paper can be easily pulled out.

  On the rear side of the housing 100, a battery storage chamber 105 that houses the substantially rod-shaped rechargeable battery 10 is provided. A battery chamber cover 170 is detachably provided in the battery storage chamber 105. In a state where the battery chamber cover 170 is removed, the battery storage chamber 105 opens in the rear portion of the housing 100 (see FIG. 7 described later). In addition, on the upper side and the lower side of the battery storage chamber 105, an upper locked portion 101a for locking locking protrusions 181A, 181B, and 182 (described later) of the battery chamber cover 170 and a lower latched portion. A stop 102a is provided (see also FIGS. 4 and 7 described later).

  In such a configuration, when printing with the portable printer 1, the operator inputs print data to be printed on the printing paper and inputs a print start instruction in the external device such as a PC terminal or a mobile phone. I do. Accordingly, print data is transmitted from the external device to the portable printer 1 via the USB cable, wireless communication, or infrared communication, and the portable printer 1 performs printing based on the print data.

  Next, a buffer structure of the chassis assembly 50 in the portable printer 1 will be described with reference to FIGS.

  As shown in FIG. 5, first boss portions 161 </ b> L and 161 </ b> R that protrude toward the inside of the apparatus are provided on the inner side of the top cover 101 at both ends in the width direction on the rear side (upper right side in FIG. 5). Yes. Screw grooves (not shown) are formed on the inner peripheral surfaces of the first boss portions 161L and 161R. On the other hand, as shown in FIG. 4, on the inner side of the under cover 101, second boss portions 162L and 162R that protrude slightly toward the inner side of the apparatus are provided at both ends in the width direction on the rear side (lower left side in FIG. 4). Is provided.

  As shown in FIG. 4, the chassis assembly 50 includes mounting portions 51 and 52 in which screw holes 51 a and 52 a (see FIG. 6) are formed at both ends in the width direction on the rear side. The mounting portion 51 is formed by bending the rear side of the base end portion of the side chassis member 130L toward the outside in the width direction (the lower right side in FIG. 4). The mounting portion 52 is integrally provided on the right rear side of the main chassis member 150. An annular rubber member 53 is provided on the upper portions of the mounting portions 51 and 52, respectively.

  The first boss portions 161L and 161R of the top cover 101, the mounting portions 51 and 52 of the chassis assembly 50, the rubber members 53 and 53 provided on the upper portions of the mounting portions 51 and 52, respectively, The two boss portions 162L and 162R are provided at corresponding positions in the vertical direction. The top cover 101, the under cover 102, and the chassis assembly 50 include screws (not shown) inserted from the second boss portions 162L and 162R of the under cover 102 and screws of the mounting portions 51 and 52 of the chassis assembly 50. The holes 51a and 52a and the rubber members 53 and 53 are inserted and fastened to the first boss portions 161L and 161R of the top cover 101 to be assembled with each other.

  When the top cover 101 and the under cover 102 and the chassis assembly 50 are assembled in this way, the mounting portions 51 and 52 of the chassis assembly 50 are connected to the first boss portions 161L and 161R of the top cover 101 and the under cover 102. Between the second boss portions 162L and 162R. At this time, the chassis assembly 50 and the under cover 102 are in contact with each other at the attachment portions 51 and 52 and the second boss portions 162L and 162R, but the base end portion of the side chassis member 130 described above is the inside of the under cover 102. There is no contact with the surface. On the other hand, only the attachment portions 51 and 52 and the first boss portions 161L and 161R are in indirect contact with the chassis assembly 50 and the top cover 101 via a rubber member 53 provided therebetween. Thereby, the impact transmitted from the top cover 101 to the chassis assembly 50 can be effectively absorbed by the rubber member 53.

  Further, the top cover 101 supports the first boss portions 161L and 161R so that the shock transmitted from the cover to the first boss portions 161L and 161R can be absorbed (only the boss support member 163R in FIG. 5). (Shown). As shown in FIG. 5, the boss support member 163R includes a standing portion 164R that is erected from the back surface of the top cover 101 toward the inside of the device, and a bent portion that is bent from the standing portion 164R. 165R, and the first boss portion 161R is provided on the bent portion 165R. The boss support member 163L has the same structure as the boss support member 163R. With such a structure, the boss support members 163L and 163R receive an impact transmitted from the top cover 101 to the first boss portions 161L and 161R due to the deflection generated between the standing portions 164L and 164R and the bent portions 165L and 165R. It can be absorbed.

  Further, as shown in FIG. 5, the top cover 101 has a predetermined amount around the first boss portions 161L and 161R toward the inside of the apparatus (upper side in FIG. 5) than the tip portions of the first boss portions 161L and 161R. The protruding rib portions 166L and 166R are provided. The rib portion 166L is disposed on the outer side in the width direction of the first boss portion 161L (the lower right side in FIG. 5 and the right side in FIG. 6), and the rib portion 166R is the rear side of the first boss portion 161R ( The upper right side in FIG. In FIG. 6, only the rib portion 166L is shown based on the cross-sectional direction. The rib portions 166L, 166R come into contact with the mounting portions 51, 52 of the chassis assembly 50 when the top cover 101 and the under cover 102 and the chassis assembly 50 are assembled, and the first boss portions 161L, The movement of 161R toward the attachment portions 51 and 52 is restricted. Thereby, it is possible to prevent the compression amount of the rubber member 53 from becoming excessive, and to prevent the shock absorbing function and durability of the rubber member 53 from being lowered.

  Next, the structure of the battery chamber cover 170 that can be attached to and detached from the battery storage chamber 105 will be described with reference to FIGS. 7 to 13.

  As described above, the battery chamber cover 170 is detachably provided to the battery storage chamber 105. As shown in FIG. 7, when the battery chamber cover 170 is removed, the battery that houses the rechargeable battery 10 is installed. A storage chamber 105 opens in the rear portion of the housing 100.

  The battery chamber cover 170 has a longitudinal direction (in other words, the longitudinal direction of the storage battery 10) in the longitudinal direction of the battery storage chamber 105 (in other words, the right end portion in FIGS. 7 to 10) at one end. The battery 10 has a pair of upper and lower locking claws 171 that fit into locking holes 109 (see FIG. 8) provided at the left end, which is one side end. The battery chamber cover 170 is provided at the right end (the left end in FIGS. 7 to 10) that is the other end in the longitudinal direction and the right end that is the other end in the longitudinal direction of the battery storage chamber 105. It has an elastic engagement part 172 that engages with the joint part 110 while being elastically deformed.

  Further, the battery chamber cover 170 includes a plurality of locking protrusions 181A, 181B, and 182 as shown in FIGS. 11, 13A, and 13B. The locking protrusions 181A, 181B, and 182 include at least one first protrusion (in this example, two first protrusions 181A and 181B) and at least one second protrusion (in this example, one second protrusion). Part 182). The first protrusions 181A and 181B and the second protrusion 182 are arranged in a substantially staggered manner so that the positions along the longitudinal direction of the battery chamber cover 170 are different from each other. In this example, the first protrusions 181A, the second protrusions 182 and the first protrusions 181B are alternately arranged in a staggered manner along the longitudinal direction. At this time, as already shown in FIGS. 2, 4, 7, etc., the upper side locked portion 101 a and the lower side locked portion 102 a are respectively on one side in the longitudinal direction of the opening of the battery storage chamber 105. The rib extends continuously from the edge portion to the other edge portion, and is configured as a rib for preventing the storage battery 10 in the battery storage chamber 105 from sliding down due to its own weight. The two first protrusions 181A and 181B are locked to the upper locked portion 101a configured as a rib as described above, and the one second protrusion 182 is set as a rib as described above. It is locked to the lower locked portion 102a that is configured.

  Further, the plurality of locking projections 181A, 181B, and 182 exclude regions other than the left end and the right end along the longitudinal direction of the battery chamber cover 170, specifically, the longitudinal center. It is unevenly arranged in either the left side region or the right side region. In this example, the plurality of locking projections 181A, 181B, 182 are on the right side (in FIG. 10) corresponding to the arrangement position of the elastic engagement part 172 (in other words, the arrangement position of the electric wire 25a of the harness 25). (Lower left side) of the area. In addition, in order to avoid the complexity of illustration, illustration of locking protrusion part 181A, 181B, 182 other than FIG. 11, FIG. 13 (a), and FIG.13 (b) is abbreviate | omitted.

  When the user attaches the battery chamber cover 170 to the battery storage chamber 105, the locking claw 171 at the left end is first fitted into the locking hole 109 of the battery storage chamber 105 to lock the left end. In this state, the elastic engagement portion 172 is elastically deformed by pushing the right end portion into the battery storage chamber 105 with a finger and is engaged with the engaged portion 110 of the battery storage chamber 105. As a result, the battery chamber cover 170 is attached to the battery storage chamber 105 as shown in FIG.

  On the other hand, when removing the battery chamber cover 170 from the battery storage chamber 105, an operator inserts a finger into the engaged portion 110 formed in a concave shape to elastically deform the elastic engaging portion 172, The engagement between the elastic engagement portion 172 and the engaged portion 110 is released. Then, by pulling out the locking claw portion 171 from the locking hole 109 of the battery storage chamber 105, the battery chamber cover 170 is removed from the battery storage chamber 105.

  As shown in FIGS. 9, 10, and 12, the elastic engagement portion 172 includes a support portion 173 erected from the inner surface 170 a of the battery chamber cover 170 toward the battery storage chamber 105, and the support portion. A curved portion 174 provided at the distal end of the curved portion 173 and a distal end portion 175 that can be brought into contact with and separated from the support portion 173 by the bending of the curved portion 174 are provided. A projecting portion 175 a is formed at the distal end portion 175, and the projecting portion 175 a is engaged with the engaged portion 110 of the battery storage chamber 105.

  A rib portion 176 is erected on the inner surface 170 a of the battery chamber cover 170 adjacent to the support portion 173 of the elastic engagement portion 172. The rib portion 176 has a hollow structure with a substantially U-shaped cross section whose open side is connected to the support portion 173. As shown in FIG. 8, the rib portion 176 functions as a harness push-in portion that pushes in the electric wire 25 a of the harness 25 connected to the stored rechargeable battery 10 when the battery chamber cover 170 is attached to the battery storage chamber 105. To do. In other words, the rechargeable battery 10 is connected to a harness 25 for supplying power to the device at the right end (left end in FIG. 8) which is the other side end when stored in the battery storage chamber 105. . The harness 25 includes a connector 25b connected to the control board 60 and the like, and a plurality (two in this example) of electric wires 25a collected in a bundle. The electric wire 25a is formed long with a margin in consideration of the attachment / detachment workability at the time of battery replacement. For this reason, as shown in FIG. 8, when the rechargeable battery 10 is stored in the battery storage chamber 105, the rechargeable battery 10 is folded in the battery storage chamber 105. The rib portion 176 can push the folded portion of the folded electric wire 25a into the back of the storage chamber and prevent the folded portion from interfering with the elastic engagement portion 172.

  In the above, the rechargeable battery 10 corresponds to the battery power source described in each claim. Further, a portion (housing 100, chassis assembly 50, etc.) other than the battery chamber cover 170 of the portable printer 1 corresponds to the device main body.

  As described above, in the portable printer 1 of the present embodiment, the printing paper is driven by the platen roller 111 and desired printing is performed on the conveyed printing paper by the thermal line head 112. The platen roller 111 and the thermal line head 112 are driven by electric power from the storage battery 10, and the storage battery 10 is stored in the battery storage chamber 105.

  The battery storage chamber 105 storing the storage battery 10 is covered and closed by the battery chamber cover 170 being attached. For this attachment, a locking hole 109 and an engaged portion 110 are provided at the left end portion (one side end portion) and the right end portion (the other side end portion) of the battery storage chamber 105, respectively. A locking claw portion 171 and an elastic engagement portion 172 are provided at the left end portion (one side end portion) and the right end portion (the other side end portion), respectively. Thereby, the locking claw 171 of the battery chamber cover 170 is locked in the locking hole 109 of the battery storage chamber 105 on the left end side, and the elastic engagement portion 172 of the battery chamber cover 170 is connected to the battery on the right end side. The battery chamber cover 170 is attached to the battery storage chamber 105 by engaging with the engaged portion 110 of the storage chamber 105 and the engaging engagement structure at both ends.

  And in this embodiment, in order to strengthen the fixing structure in the intermediate part of the left end part and the right end part, a plurality of positions other than the both end parts (left end part and right end part) of the battery chamber cover 170 are provided. Locking protrusions 181A, 181B, and 182 are provided. The first protrusions 181A and 181B are locked to the upper locked portion 101a, and the second protrusion 182 is locked to the lower locked portion 102a. In this way, by realizing a locking structure between the battery chamber cover 170 and the battery storage chamber 105 on the upper side and the lower side in the short direction of the battery chamber cover 170 at portions other than the left end portion and the right end portion described above, It is possible to prevent the battery chamber cover 170 from being bent or lifted to the outer surface side, which may occur in the intermediate portion.

  Further, the first protrusions 181A and 181B and the second protrusions 182 are arranged in a substantially staggered manner so that the positions along the longitudinal direction of the battery chamber cover 170 are not the same, but are different from each other. As a result, when the user removes the battery chamber cover 170 from the state in which it is mounted in the battery storage chamber 105, the resistance generated by the locking structure using the protrusions 181A, 181B, and 182 is dispersed. The chamber cover 170 can be removed relatively easily.

  Further, as described above, when the user attaches the battery chamber cover 170 to the battery storage chamber 105, first, the locking claw portion 171 is fitted into the locking hole 109 at the left side end portion. Thereafter, while maintaining the fitting state, the user engages the engaged portion 110 while pressing the elastic engaging portion 172 with a finger at the right side end portion and elastically deforming it. In this way, when the mounting is performed by the left end / right end fixing structure, when the user mounts suddenly, or when the pressing force is insufficient, the above lifted state is completely eliminated. Without being partly locked or partially locked (incompletely locked) among the plurality of locking protrusions 181A, 181B, 182 located between the left end and right end There is sex.

  Therefore, in this embodiment, in particular, avoid the central portion in the longitudinal direction where the lifting height due to warping is the highest, avoiding the central portion in the longitudinal direction, and a plurality of the left-side region or the right-side region where the lifting height is relatively low. The locking projections 181A, 181B, 182 are arranged. As a result, even if the incomplete locking state described above occurs, the floating height of the locking protrusions 181A, 181B, and 182 that are not locked (or in a semi-locked state) can be kept low. it can. As a result, the user can easily correct the original locking state by pressing the locking protrusions 181A, 181B, and 182 in the unlocked state (or in the semi-locked state) again. it can.

  Further, as described above, when the battery chamber cover 170 is mounted, after the locking claw portion 171 is first fitted into the locking hole 109, the elastic engagement portion 172 is pressed by the pressing force of the user's finger. Engage with the engaged portion 110. In the present embodiment, in particular, a plurality of locking protrusions 181A, 181B, and 182 are arranged on the same side as the elastic engagement portion 172 that is finally pressed with a finger during mounting. Accordingly, the pressing force is simultaneously applied to the locking projections 181A, 181B, and 182 when the elastic engagement portion 172 is pressed, and the battery chamber cover 170 can be smoothly mounted.

  Conversely, when removing the battery chamber cover 170 from the battery storage chamber 105, the user first elastically deforms the elastic engagement portion 172 as described above to release the engagement, and then releases the locking claw portion 171. Detach from the locking hole 109. As described above, by disposing the plurality of locking protrusions 181A, 181B, and 182 on the same side as the elastic engaging portion 172 that is first operated with a finger when removed, the elastic engaging portion 172 is elastically deformed. A pulling force is simultaneously applied to the stop protrusions 181A, 181B, and 182 so that the battery chamber cover 170 can be removed smoothly.

  In the present embodiment, in particular, by disposing a plurality of locking protrusions 181A, 181B, and 182 on the same side as the electric wire 25a of the harness 25 that exerts a reaction force that pushes the battery chamber cover 170 outward. The reaction force can be surely suppressed, and the battery chamber cover 170 can be prevented from being bent or lifted to the outer surface side.

  In the present embodiment, in particular, the locking protrusions 181A, 181A, 181A, 181A, 181A, 181B are alternately arranged in the order of the first protrusions 181A, the second protrusions 182, and the first protrusions 181B. It is possible to prevent the battery chamber cover 170 from being lifted up in a balanced manner in each of 181B and 182. Further, by suppressing the total of the locking protrusions 181A, 181B, and 182 to three, the resistance caused by the locking structure when the user removes the battery chamber cover 170 is surely suppressed, and the user can reliably suppress the battery chamber cover 170. Can be reliably and easily removed.

  In the present embodiment, in particular, the upper side locked portion 101a and the lower side locked portion 102a are continuously provided from the left side edge to the right side edge of the opening of the battery storage chamber 105, respectively. It is comprised by the extended rib. As a result, the ribs provided to prevent the storage battery 10 in the battery storage chamber 105 from slipping off due to its own weight are utilized, and the first protrusions 181A, 181B and the second protrusions 182 are locked, and the battery It is possible to prevent the chamber cover 170 from being lifted.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea of the present invention. Hereinafter, such modifications will be described in order.

  In the above embodiment, the rubber member 53 is provided between the first boss portions 161L and 161R of the top cover 101 and the mounting portions 51 and 52. However, the second boss portions 162L and 162R and the mounting portion of the under cover 102 are provided. A rubber member 53 may be provided between 51 and 52. Thereby, even if any of the top cover 101 and the under cover 102 receives an impact due to a drop of the portable printer 1 or the like, the impact transmitted to the chassis assembly 50 can be absorbed with certainty. A more powerful portable printer can be realized.

1 Portable printer 10 Rechargeable battery (battery power)
25 Harness 25a Electric wire 50 Chassis assembly (equipment main unit)
100 Housing (equipment main unit)
101a Upper side locked part (one side locked part)
102a Lower side locked portion (the other side locked portion)
DESCRIPTION OF SYMBOLS 105 Battery storage chamber 109 Locking hole 110 Engagement part 170 Battery chamber cover 171 Locking claw part 172 Elastic engagement part 173 Support part 174 Bending part 175 Tip part 176 Rib part 181A, B 1st protrusion part (locking protrusion) Part)
182 Second protrusion (locking protrusion)

Claims (6)

A platen roller that conveys the paper to be printed;
A thermal line head for performing desired printing on the printing paper conveyed by the platen roller;
A battery storage chamber for storing a battery power source for driving the platen roller and the thermal line head, the platen roller and the platen roller; A device body containing the thermal line head;
A battery chamber cover configured to be detachable from the battery storage chamber;
A portable printer comprising:
The battery compartment is
A locking hole provided at one end in the longitudinal direction of the battery storage chamber,
An engaged portion provided at the other end portion in the longitudinal direction in the battery storage chamber;
One side locked portion and the other side locked portion respectively provided on one side and the other side of the short side direction in the battery storage chamber,
With
The battery chamber cover is
A locking claw portion that is provided at one end in the longitudinal direction of the battery chamber cover and fits into the locking hole;
An elastic engagement portion provided at the other end portion in the longitudinal direction of the battery chamber cover and engaged with the engaged portion while being elastically deformed;
The positions along the longitudinal direction are arranged in a staggered manner so as to be different from each other except at the one side end and the other side end, and at the one side locked portion and the other side locked portion. A plurality of locking protrusions, each including at least one first protrusion and at least one second protrusion, each locking;
A portable printer characterized by comprising: The portable printer according to claim 1, wherein
The plurality of locking protrusions are
The portable printer, wherein the battery chamber cover is unevenly arranged in one of the one region in the longitudinal direction or the other region in the longitudinal direction. The portable printer according to claim 2, wherein
The plurality of locking protrusions are
A portable printer, wherein the battery chamber cover is unevenly arranged in the region on the other side in the longitudinal direction corresponding to the elastic engagement portion. The portable printer according to claim 2, wherein
The battery power is
At the time of storage in the battery storage chamber, a wire of a harness is connected to the other side portion in the longitudinal direction of the battery power source,
The plurality of locking protrusions are
A portable printer, wherein the battery chamber cover is unevenly arranged in the other side region in the longitudinal direction of the harness that carries the electric wire. The portable printer according to any one of claims 2 to 4,
The plurality of locking protrusions are
Including two first protrusions and one second protrusion,
Along the longitudinal direction, one of the two first protrusions, the second protrusion, and the other of the two first protrusions are alternately arranged in a staggered manner. Portable printer. The portable printer according to any one of claims 1 to 5,
The one side locked portion and the other side locked portion are respectively
A portable printer, characterized in that it is a rib extending continuously along the longitudinal direction from one side edge in the longitudinal direction to the other side edge of the opening of the battery storage chamber.

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