CN211942596U - Thermal printer capable of quickly replacing storage card - Google Patents

Abstract

The utility model provides a thermal printer of quick replacement storage card includes flip subassembly and casing subassembly, the casing subassembly includes shell and first well frame, first well frame sets up in the shell, flip subassembly articulates in the casing subassembly, flip subassembly includes lid and second well frame, second well frame sets up on the lid, be provided with installation logical groove and apron on the second well frame, installation logical groove includes first opening, the apron covers first opening, be provided with the hinge groove on the relative both sides wall that sets up of installation logical groove respectively, be provided with the circular arc holding surface on the hinge groove, be provided with the hinge post on the relative both sides wall that sets up of apron respectively, the radial lateral wall and the circular arc holding surface of hinge post are adjoined; the apron rotates around the axis of hinge post, and the apron deviates from first open-ended surface towards first well frame, structure more than adopting need not to set up on first well frame and rotates and dodge the position, and the processing of frame in easily first, and the installation or the dismantlement of realization storage card fast.

Description

Thermal printer capable of quickly replacing storage card

Technical Field

The utility model relates to a printer field specifically is a thermal printer who relates to a quick replacement storage card.

Background

In the conventional thermal printer, a plurality of covers, such as a battery cover covering a battery well or an upper cover covering a printer base, are provided according to functions. If the flip mode of the flip is rotation, the setting structure of the flip is generally: the hinge shaft penetrates through the flip cover, the flip cover rotates around the axis of the hinge shaft, and an avoiding position needs to be arranged on a mounting carrier (such as a machine shell in the machine base) of the hinge shaft at the moment, so that one end of the flip cover rotates at the avoiding position. If flip is dodging the position in too big with the clearance between the casing, influence printer outward appearance, if this clearance undersize, the lid can't rotate, and the casing is generally injection moulding at one time simultaneously, is difficult to adjust the size of dodging the position.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a thermal printer of quick replacement storage card.

In order to achieve the main object, the present invention provides a thermal printer for fast replacing a memory card, comprising a flip assembly, a housing assembly and a printing assembly, wherein the housing assembly comprises a housing and a first middle frame, the first middle frame is disposed in the housing, the flip assembly is hinged to the housing assembly, the printing assembly comprises a thermal sensitive sheet and a rubber roller, the thermal sensitive sheet is disposed on one side of the flip assembly facing the first middle frame, the rubber roller is disposed on one side of the first middle frame facing the flip assembly, the flip assembly comprises a cover body and a second middle frame, the second middle frame is disposed on one side of the cover body facing the housing assembly, the second middle frame is provided with an installation through groove and a cover plate, the installation through groove comprises a first opening facing the housing assembly, the cover plate covers the first opening, hinge grooves are respectively disposed on two opposite side walls of the installation through groove, and arc supporting surfaces are disposed on the hinge grooves, two opposite side walls of the cover plate are respectively provided with a hinge column, the hinge columns are arranged in the hinge grooves, and the radial side walls of the hinge columns are adjacent to the arc supporting surface; the cover plate rotates around the axis of the hinge post, and the outer surface of the cover plate, which is far away from the first opening, faces the first middle frame.

According to the scheme, the installation through groove can be used for installing the memory card, the first opening of the installation through groove faces the shell assembly, the cover plate covers the first opening, the cover plate is hinged to the second middle frame, the cover body rotates around the hinge post, the cover of the cover plate is opened, an interference surface is formed by the connection of the hinge post and the hinge block, a rotation point is formed on the interference surface, a rotation avoiding position does not need to be arranged on the first middle frame, the problem that the avoiding position of the turning position of the flip cover on the installation through groove is too large or too small is avoided, and the first middle frame is easy to process; when the printer is in the state of uncapping simultaneously, the apron rotates the back, and the apron deviates from first open-ended one side towards first well frame, and when the user of being convenient for installs the storage card that leads to the inslot or dismantle, the blocking that reduces flip subassembly or casing assembly and cause realizes the installation or the dismantlement of storage card fast.

The hinge groove is provided with a mounting opening in the radial direction of the hinge column, and the hinge column penetrates through the mounting opening and slides into the hinge groove.

It can be seen that the mounting opening is a hinge post assembly opening, which facilitates assembly of the hinge post into the hinge slot.

The further scheme is that connecting plates are respectively arranged on two opposite side walls of the cover plate, the hinge columns are arranged on one side of the connecting plates facing the hinge grooves, limiting blocks are arranged in the installation through grooves, limiting grooves are formed between the limiting blocks and the side walls of the installation through grooves, and the connecting plates are located in the limiting grooves.

Therefore, the rotation of the hinge column drives the connecting plate to rotate, the connecting plate rotates in the limiting groove, the position deviation of the connecting plate is avoided, and the hinge column is located in the hinge groove all the time.

The further scheme is that the limiting block faces towards one end of the cover plate is provided with an avoiding groove, the avoiding groove is communicated with the hinge groove in the axial direction of the hinge column, and an arc bend angle is arranged in the avoiding groove.

It is thus clear that the setting of dodging the recess is convenient for assemble the hinge post to the hinge inslot, avoids the setting of stopper to cause the interference to the assembly of hinge post.

The further scheme is that a clamping block is arranged on the cover plate, a clamping protruding block is arranged on one side of the casing facing the installation through groove, a clamping groove is formed in the clamping protruding block, and the clamping block is arranged in the clamping groove.

It is obvious that the joint piece sets up in the joint inslot, and the joint groove is spacing to the joint piece, avoids the apron to take place not to have the manual rotation.

The further scheme is that one side of the clamping block facing the clamping convex block is provided with a butt joint surface, and the butt joint surface is arc-shaped.

Therefore, the arc-shaped abutting surfaces facilitate the clamping blocks to slide into the clamping grooves.

The thermal printer further comprises a control assembly, wherein the control assembly comprises a control main board and a touch screen, the touch screen is arranged on the outer wall of the cover body, and the control main board is positioned between the touch screen and the second middle frame; the installation leads to the inslot and is provided with the draw-in groove, and the draw-in groove is used for placing the storage card, is connected with the connecting wire on the draw-in groove, and the installation leads to the inslot to be provided with the second opening, and the connecting wire passes the second opening and is connected with the control mainboard.

Therefore, the control assembly can be used as an operation terminal and is arranged on the printer, so that the operation terminal and the printer are integrated, the printer is convenient to move, and the working efficiency is improved.

Drawings

FIG. 1 is a perspective view of a thermal printer with a quick change memory card according to an embodiment of the present invention at a first angle.

Fig. 2 is a perspective view of a thermal printer with a quick change memory card according to a second embodiment of the present invention.

Fig. 3 is a view showing the structure of the thermal printer with quick memory card exchange according to the present invention after the cover is opened.

Fig. 4 is an exploded view of a flip assembly of a thermal printer of the present invention with a quick change memory card.

Fig. 5 is a perspective view of a second middle frame of a first embodiment of the thermal printer for quickly replacing a memory card according to the present invention.

Fig. 6 is a cross-sectional view of a quick change memory card thermal printer of the present invention after opening the cover.

Fig. 7 is an enlarged view of fig. 6A.

Fig. 8 is a perspective view of a second first angle of the thermal printer for quickly replacing a memory card according to the present invention.

FIG. 9 is a perspective view of a second embodiment of a thermal printer with a quick change memory card according to the present invention.

Fig. 10 is a structural view of a second embodiment of the thermal printer for quickly replacing a memory card according to the present invention after the cover is opened.

FIG. 11 is a cross-sectional view of a thermal printer with a quick change memory card according to an embodiment of the present invention with its cover closed.

Fig. 12 is an enlarged view at fig. 11B.

Fig. 13 is a sectional view of a second embodiment of a thermal printer of the present invention in which a memory card is quickly replaced.

Fig. 14 is an enlarged view at fig. 13C.

Fig. 15 is a structural view of a paper stop assembly in the second embodiment of the thermal printer for quickly replacing a memory card according to the present invention.

Fig. 16 is a cross-sectional view of a housing assembly for a thermal printer implementing the quick change memory card of the present invention.

Fig. 17 is an enlarged view of fig. 16D.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Referring to fig. 1, 2, 3 and 10, the thermal printer for rapidly replacing a memory card of the present invention includes a flip assembly 2, a housing assembly 1, a printing assembly and a control assembly, wherein the housing assembly 1 includes a first middle frame 11 and a housing 12, and the first middle frame 11 is disposed in the housing 12. The flip assembly 2 includes a second middle frame 21 and a cover 22, the second middle frame 21 is disposed on a side of the cover 22 facing the first middle frame 11, and the second middle frame 21 is disposed inside the cover 22. The printing component comprises a heat-sensitive sheet 31 and a rubber roller 32, wherein the heat-sensitive sheet 31 is arranged on one side of the second middle frame 21 facing the first middle frame 11, and the rubber roller 32 is arranged on one side of the first middle frame 11 facing the flip component 2. In fig. 3, a rubber roller mounting position 321 is provided on the first middle frame 11, and the rubber roller mounting position is used for mounting the rubber roller 32. The first middle frame 11 and the housing 12 in the housing assembly 1 may be integrally formed, and the second middle frame 21 and the cover 22 in the flip assembly 2 may be integrally formed.

A paper feeding slot 33 is arranged between the flip cover component 2 and the shell component 1, a paper feeding opening 34 and a paper discharging opening 35 are formed between the peripheral wall of the cover body 22 and the peripheral wall of the shell 12, the paper feeding opening 34, the paper feeding slot 33 and the paper discharging opening 35 are communicated, and the paper feeding slot 33 passes through the position between the heat-sensitive sheet 31 and the rubber roller 32. Since the paper inlet opening 34 and the paper outlet opening 35 of the printer are provided between the outer peripheral wall of the cover 22 and the outer peripheral wall of the housing 12, no paper placing position is provided in the printer, and the paper can be placed at any position outside the printer, thereby forming an open paper bin. The height direction of the paper inlet opening 34 is the same as the height direction of the paper outlet opening 35, and the height direction of the paper inlet opening 34 is perpendicular to the width direction of the printing paper; the height of the paper inlet opening 34 is greater than that of the paper outlet opening 35, so that when a user places printing paper through the paper inlet opening 34, the user can place the paper more quickly.

Referring to fig. 4, the control module 4 includes a control main board and a touch screen 41, the control main board is connected to the touch screen 41, the touch screen 41 is disposed on an outer wall of the cover 22, and the control main board is located between the cover 22 and the second middle frame 21. The touch screen 41 can be disposed on a side wall of the cover 22 away from the housing assembly 1, and the touch screen 41 is disposed obliquely, so that the user can use the touch screen 41 more comfortably and intuitively. The control main board is disposed between the cover 22 and the second middle frame 21.

The second middle frame 21 is provided with a mounting through groove 5 and a cover plate 6, and the mounting through groove 5 can be used for placing a memory card. The mounting through-slot 5 includes a first opening 51 and a second opening 52, the first opening 51 faces the first middle frame 11, and the second opening 52 faces the cover 22. The cover plate 6 covers the first opening 51. The installation is led to and is provided with the draw-in groove in the groove 5, and the draw-in groove also can set up on the apron 6 keeps away from one side of first well frame 11, and the draw-in groove can be used for placing the storage card, is connected with the connecting wire on the draw-in groove, and the connecting wire passes second opening 52 and is connected with the control mainboard. When the printer is in the open-cover state, the cover 6 can be opened from the first opening 51, and the memory card in the through groove 5 can be quickly replaced. The control assembly is used as an operation terminal and is arranged on the printer, so that the operation terminal and the printer are combined into one machine, the printer is convenient to carry, and the working efficiency is improved.

In the first embodiment, a side wall of the cover 22 on the side away from the housing assembly 1 is provided with a boss mounting block 221, a first mounting surface 222 and a second mounting surface 223, the first mounting surface 222 is provided on the boss mounting block 221, the first mounting surface 222 is obliquely provided, and the first mounting surface 222 is provided with a mounting hole 224. The control assembly further comprises a touch screen mounting frame 42, the touch screen 41 is arranged on the touch screen mounting frame 42, and the touch screen 41 is arranged in the mounting hole 224 through the touch screen mounting frame 42. The second mounting surface 223 is arranged along the horizontal direction, the second mounting surface 223 is arranged around the outer periphery of the convex mounting block 221, the display lamp mounting position 225 is arranged on the second mounting surface 223, and the display lamp mounting position 225 is positioned on one side of the mounting convex block 221, so that the layout of the side wall of the cover body 22 far away from the shell assembly 1 is more reasonable. A scanning head mounting position 226 is further disposed on the side wall of the cover 22, and the scanning head mounting position 226 is located between the second mounting surface 223 and the housing assembly 1; the scanning head mounting position 226 on the side of the cover 22 is more convenient for the user to scan compared to the case where the scanning head is disposed on the side of the cover 22 away from the housing assembly 1.

In the present embodiment, referring to fig. 5, two limiting grooves 53, two steps 54 and a clamping groove 55 are arranged on the inner wall of the installation through groove 5, one step 54 is arranged in one limiting groove 53, and the step 54 and the clamping groove 55 are located on the inner wall of different sides of the installation through groove 5. The cover plate 6 is provided with two first clamping blocks 61 and a second clamping block 62, the first clamping blocks 61 abut against the step surface of the step 54 far away from the first opening 51, and the second clamping blocks 62 are clamped in the clamping grooves 55. The step face of first opening 51 supports first joint piece 61, and second joint piece 62 block is in joint groove 55, fixes apron 6 in first opening 51, when the storage card in the logical groove 5 of installation needs to be changed, extracts second joint piece 62 from joint groove 55, takes out apron 6 from the logical groove 5 of installation. Second joint piece 62 is the U type, be provided with clearance 63 between the first end of second joint piece 62 and the second end of second joint piece 62, apron 6 is connected to the first end of second joint piece 62, the crooked setting of second end 64 of second joint piece 62, second end 64 of second joint piece 62 is located outside the logical groove 5 of installation, frame 21's one side still is provided with recess 111 in the first well frame 11 orientation second, the second end 64 of second joint piece 62 is located recess 111, the second end 64 of second joint piece 62 can be regarded as handle portion 57, when the lid is opened at apron 6, act on the second end 64 of second joint piece 62 for handle portion, can take out apron 6 from second well frame 21 more fast more laborsavingly.

Referring to fig. 6 and 7, the hinge block 212 is disposed on the second middle frame 21, the hinge groove 112 is disposed on a side of the first middle frame 11 facing the flip assembly 2, the first buffer block 113 is disposed in the hinge groove 112, the buffer inclined plane 114 is disposed on the first buffer block 113, and the hinge block 212 abuts against the buffer inclined plane 114. The hinge block 212 is provided with a second buffer block 213, the outer peripheral wall of the second buffer block 213 is provided with an arc buffer surface 214, and the arc buffer surface 214 is adjacent to the buffer inclined surface 114. During the cover opening and closing process of the flip member 2, the hinge block 212 abuts against the buffer slope 114, and a friction force is generated, and the user needs to overcome the friction force to open and close the cover, thereby realizing the slow cover opening and closing of the printer.

The inclined surface 211 is arranged on one side of the first middle frame 11 facing the second middle frame 21, and the inclined surface 211 is obliquely arranged towards the second middle frame 21 from the paper inlet opening 34 to the paper outlet opening 35, so that the height of the paper inlet opening 34 is larger than that of the paper outlet opening 35.

In the second embodiment, referring to fig. 8 and 9, the touch screen 41 is paved on the side wall of the side of the cover 22 away from the housing assembly 1, the side wall net of the side of the cover 22 away from the housing assembly 1 is disposed in an inclined manner, and the inclination of the touch screen 41 makes the operating viewing angle range wider and the operation more convenient.

In the present embodiment, the inclined surface 10 is disposed on one side of the first middle frame 11 facing the paper inlet opening 34, and the inclined surface 10 is disposed obliquely toward the second middle frame 21 from the paper inlet opening 34 to the paper outlet opening 35, so that the height of the paper inlet opening 34 is greater than that of the paper outlet opening 35.

In the present embodiment, the glue roller 32 is provided on the side of the first middle frame 11 facing the second middle frame 21, and the heat-sensitive sheet 31 is provided between the second middle frame 21 facing the first middle frame 11. The thermal printer further comprises a paper blocking assembly 7, wherein the paper blocking assembly 7 is arranged on the first middle frame 11, and the paper blocking assembly 7 is arranged between the paper feeding opening 34 and the rubber roller 32.

In the present embodiment, referring to fig. 10, the second middle frame 21 is hinged to the first middle frame 11, two hinge grooves 112 are provided on the first middle frame 11, referring to fig. 11 and 12, a deformation block 8 and a hinge shaft 81 are provided in the hinge grooves 112, and the second middle frame 21 is hinged to the first middle frame 11 through the hinge shaft 81. The hinge block 227 is disposed on the cover 22, the hinge block 227 is disposed in the hinge groove 112, the hinge shaft 81 is connected to the hinge block 227, and the flip assembly 2 rotates around the axis of the hinge shaft 81. The deformation block 8 is arranged on the rotation direction of the hinge block 227, the hinge block 227 is in interference fit with the deformation block 8, and the deformation block 8 is made of plastic. When the printer uncaps or closes the lid, flip subassembly 2 rotates around hinge 81, because the setting of the piece 8 that warp is on the rotation direction of articulated piece 227, the piece 8 that warp is plastics, when articulated piece 227 butt warp piece 8, articulated piece 227 and the 8 interference fit that warp to warp piece 8 and take place to warp, and articulated piece 227 need overcome with the frictional force that produces when warping 8 interference fits, just can realize uncapping or close the lid, thereby realize slowly opening and shutting and cover.

The deformation block 8 is arranged on the inner side wall of the hinge groove 112, the deformation block 8 is provided with an inclined surface 82 and a protruding block 83, the inclined surface 82 is arranged on one side facing the hinge block 227, the hinge block 227 is in interference fit with the inclined surface 82, the protruding block 83 is located between the flip cover component 2 and the inclined surface 82, the protruding block 83 is provided with an arc end surface 831, and the hinge block 227 is in interference fit with the arc end surface 831. Because also interference fit between articulated piece 227 and inclined plane 82 to when the setting of inclined plane 82 guaranteed that articulated piece 227 can realize the rotation, articulated piece 227 can with the interference fit of deformation piece 8. The setting of circular arc terminal surface 831 on protruding piece 83 guarantees that articulated piece 227 can realize the pivoted while, articulated piece 227 can with the 8 interference fit that warp.

The bottom of the hinge slot 227 is provided with a first abutting block 84, the first abutting block 84 is located between two oppositely arranged side walls of the hinge slot 112, the first abutting block 84 is provided with a first abutting surface 85 and a second abutting surface 86, and the second abutting surface 86 is located between the first abutting surface 85 and the deformation block 8. The hinge block 227 is provided with a second abutting block 87, the second abutting block 87 is provided with a third abutting surface 88 and a fourth abutting surface 89, the first abutting surface 85 abuts against the third abutting surface 88, and the second abutting surface 86 abuts against the fourth abutting surface 89. The first abutment surface 85, the second abutment surface 86, the third abutment surface 87, and the fourth abutment surface 88 are each arcuate. When the hinge block 227 rotates, the hinge block 227 is firstly abutted against the first abutting block 84 and then is in interference fit with the deformation block 8, so that the cover opening and closing speed of the flip cover assembly 2 is further reduced; the arc-shaped first, second, third and fourth abutment surfaces 85, 86, 87, 88 ensure that the hinge block 227 can rotate, and the hinge block 227 can abut against the abutment surfaces to generate friction.

In this embodiment, the hinge shaft 82 is a rotating shaft, the rotating shaft 82 simultaneously passes through the first middle frame 11 and the second middle frame 21, the deformation block 8 is arranged on the radial direction of the rotating shaft 82, and after the hinge block 227 rotates, the hinge block 227 can be in interference fit with the deformation block 8.

Referring to fig. 13 and 14, in the present embodiment, two opposite side walls of the installation through slot 5 are respectively provided with a hinge slot 56, the hinge slot 56 is provided with a circular arc support surface 57, two opposite side walls of the cover plate 6 are respectively provided with a hinge column 65, the hinge columns 65 are arranged in the hinge slot 56, and the radial side walls of the hinge columns 65 are adjacent to the circular arc support surfaces 57. The flip subassembly 2 rotates around hinge post 65, realizes uncapping of apron 6, wherein the face is interfered in the formation of adjacency between hinge post 65 and the circular arc holding surface 57 of hinge groove 56, is formed with the pivot point on the face of interference, avoids appearing on the installation through groove 5 that flip subassembly 2 rotates the department and dodges the problem that is located too big or undersize, easily the processing of frame 11 in the first.

The cover 6 is rotated about the axis of the hinge post 65, and when the cover 6 is opened, the side of the cover 6 facing away from the first opening 51 faces the first middle frame 11. In the present embodiment, a side wall of the cover plate 6 on a side away from the first opening 51 is provided with a card slot 66, and the card slot 66 is used for placing a memory card. Under the state that the printer is in the state of uncapping, apron 6 rotates the back, and apron 6 deviates from first opening 51's surface towards first well frame 11, and the user reduces the interference that flip subassembly 2 or casing subassembly 1 caused when installing or dismantling the storage card that leads to the inslot 5 of installation, realizes the installation or the dismantlement of storage card fast.

The hinge slot 56 is provided with a mounting opening 58 in the radial direction of the hinge post, the hinge post 65 slides into the hinge slot 56 through the mounting opening 58, and the mounting opening 58 is provided to facilitate the fitting of the hinge post 65 into the hinge slot 56.

Two connecting plates 67 are respectively arranged on two opposite side walls of the cover plate 6, one hinge column 65 is arranged on one side, facing the hinge groove 56, of one connecting plate 67, a limiting block 59 is arranged in the installation through groove 5, a limiting groove 510 is arranged between the limiting block 59 and the side wall of the installation through groove 5, and the connecting plate 67 is located in the limiting groove 510. The rotation of hinge post 65 drives the rotation of connecting plate 67, and connecting plate 67 rotates in spacing groove 510, avoids the offset of connecting plate 67, makes hinge post 65 be located hinge groove 56 all the time. An avoiding groove 511 is formed in one end, facing the cover plate 6, of the limiting block 59, the avoiding groove 511 is communicated with the hinge groove 56 in the axial direction of the hinge column 65, and an arc bending angle 512 is formed in the avoiding groove 511. The arrangement of the avoiding groove 511 is convenient for assembling the hinge post 65 into the hinge groove 56, and the interference of the arrangement of the limiting block 59 on the assembly of the hinge post 65 is avoided.

Be provided with joint piece 68 on apron 6, frame 11 is provided with joint protruding piece 116 on the one side towards the logical groove 5 of installation in the first, is provided with the joint groove on the protruding piece 116 of joint, and joint piece 68 sets up at the joint inslot. The clamping block 68 is arranged in the clamping groove, and the clamping groove limits the clamping block 68, so that the cover plate 6 is prevented from rotating artificially. The clamping block 68 is provided with an abutting surface 681 on one side facing the clamping convex block 116, the abutting surface 681 is arc-shaped, and the arc-shaped abutting surface 681 facilitates the sliding of the clamping block 68 into the clamping groove. In this embodiment, be provided with handle block 69 on the apron 6, handle block 69 sets up on the same side lateral wall of apron 6 with the joint piece, and handle block 69 sets up outside the logical groove 5 of installation. When the handle block 69 is used to open and close the cover 6, the labor can be saved.

Referring to fig. 15, the paper blocking assembly 7 includes a first slider 71, a second slider 72, a first rack 73, a second rack 74, and a gear 75, a first chute 117 and a second chute 118 are disposed on the first middle frame 11, the first slider 71 includes a paper blocking block 76 and a connecting block 760, the paper blocking block 76 is connected to the connecting block 760, the connecting block 760 is disposed in the first chute 117, the connecting block 760 is connected to the first rack 73, the paper blocking block 76 is disposed on a first side 119 of the first middle frame 11, the first rack 73 is disposed on a second side 110 of the first middle frame 11, the first side of the first middle frame 11 and the second side 119 of the first middle frame 11 are disposed opposite to each other, and the second side 110 of the first middle frame 11 is disposed toward the housing 12. The first slider 71 and the second slider 72 are symmetrically arranged, the connecting block 760 of the second slider 72 is arranged in the second sliding groove 118, the connecting block of the second slider 72 is connected with the second rack 74, the teeth of the first rack 73 and the teeth of the second rack 74 are arranged in a face-to-face manner, and the gear 75 is engaged between the first rack 73 and the second rack 74. In the present embodiment, the first slider 71 and the second slider 72 have the same structure, and the first rack 73 and the second rack 74 have the same structure. One end of the paper stopper 76 extends in the direction of inclination of the inclined surface, and the direction of extension of one end of the paper stopper 76 is the same as the direction of inclination of the inclined surface 10, so that the paper stopper 76 restricts the printing paper from the paper feed opening 34. In this embodiment, the paper blocking block 76 includes a blocking plate 761 and a backing plate 762, the blocking plate 761 is vertically disposed on the backing plate 762, the backing plate 762 is disposed on the first side 119 of the first middle frame 11, a plurality of protruding strips 763 are disposed on a side of the backing plate 762 away from the first middle frame 11, and the protruding strips 763 extend along the paper feeding direction of the paper feeding slot 33.

The first rack 73 is provided with a first protruding strip 77 on a side wall of the second side 110 facing the first middle frame 11, a length extending direction of the first protruding strip 77 is the same as a length extending direction of the first rack 73, and in this embodiment, the length extending direction of the first protruding strip 77 is parallel to the length extending direction of the first rack 73, so that an occupied space of the first protruding strip 77 on the first rack 73 is smaller, and a volume of the first rack 73 is also smaller. Referring to fig. 16 and 17, the limiting surface assemblies 9 are respectively arranged on the peripheries of the first protruding strips 77 and the first racks 73, and the first protruding strips 77 and the first racks 73 are respectively in clearance fit with the limiting surface assemblies 9. The tooth that bites of first rack 73 needs with gear 75 meshing, first protruding strip 77 sets up on first rack 73, the periphery of first protruding strip 77 respectively with spacing face subassembly 9 clearance fit, at the in-process that first rack 73 removed, spacing face subassembly 9 is spacing to first rack 73 and first protruding strip 77, effectively consolidate the setting of first rack 73 on first well frame 11, through the deflection of first protruding strip 77 of long area control and first rack 73, make first rack 73 at removal in-process non-deformable, thereby the slider slides smoothly, not block frequently, stir and feel good.

In the present embodiment, the position-limiting surface assembly 9 includes a first position-limiting surface 91, a second position-limiting surface 92, a third position-limiting surface 93 and a fourth position-limiting surface 94. A first side plate 95 and a second side plate 96 are arranged on the second side wall of the first middle frame 11, the first protruding strip 77 is located between the first side plate 95 and the second side plate 96, the first side plate 95 is located between the connecting block 760 and the first protruding strip 77, and the first limiting surface 91 is located on the side wall of the first side plate 95 facing the first protruding strip 77. The second limiting surface 92 is located between the first side plate 95 and the second side plate 96, and the second limiting surface 92 is located on the side wall of the second side 110 of the first middle frame 11. The third limiting surface 93 is located on a side wall of the second side plate 96 facing the first rack 73, and the third limiting surface 93 is located between the second limiting surface 92 and the fourth limiting surface 94.

The fourth stopper surface 94 is located between the first rack 73 and the housing 12. The paper stop assembly 7 includes a bottom plate 78, the bottom plate 78 is disposed between the second side wall of the first middle frame 11 and the housing 12, the gear 75 is disposed on the bottom plate 78, and a fourth limiting surface 94 is disposed on a side of the bottom plate 78 facing the first rack 73. The bottom plate 78 is provided with a second protruding strip 79, and the length extending direction of the second protruding strip 79 may be the same as the length extending direction of the first rack 73, and in this embodiment, the length extending direction of the second protruding strip 79 is parallel to the length extending direction of the first rack 73. The fourth stopper surface 94 is provided on the second projecting strip 79, and the fourth stopper surface 94 abuts the first rack 73. The fourth limiting surface 94 is disposed on the second protruding strip 79, and the first rack 73 is adjacent to the second protruding block 79, so that the friction force generated by the direct adjacent of the first rack 73 and the side wall of the bottom plate 78 can be reduced, and the sliding of the first rack 73 is smoother. The first limiting surface 91, the second limiting surface 92, the third limiting surface 93 and the fourth limiting surface 94 limit the first rack 73 through four different directions of the first rack 73, namely, the upper direction, the lower direction, the left direction and the right direction, so that the deformation of the first rack 73 in the four directions is controlled, and the first rack 73 is effectively reinforced.

In this embodiment, the first rack 73 and the second rack 74 are respectively engaged with the gear 75, when the distance between the first slider 71 and the second slider 72 is adjusted, the first rack 73 can be driven to move to drive the gear 75 to rotate, the rotation of the gear 75 causes the second rack 74 to move to shorten or lengthen the distance between the first slider 71 and the second slider 72, so that the paper blocking blocks 76 and 72 of the first slider 71 and the second slider 72 can limit printing paper of different sizes, and the printing paper can be prevented from shifting during printing. In the process of moving the second rack 74, in order to avoid the deformation of the second rack 74, a protruding strip is also arranged on the second rack 74, a limiting surface assembly 9 is also arranged on the peripheries of the second rack 74 and the protruding strip, and the structure of the limiting surface assembly 9 on the periphery of the first rack 73 is the same as that of the limiting surface assembly 9 on the periphery of the first rack 73.

Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims (7)

1. Quick replacement memory card's thermal printer, including flip subassembly, casing subassembly and printing component, casing subassembly includes shell and first well frame, first well frame setting is in the shell, flip subassembly articulate in casing subassembly, printing component includes temperature sensing piece and rubber roll, the temperature sensing piece sets up flip subassembly orientation on one side of first well frame, the rubber roll sets up first well frame orientation on one side of flip subassembly, its characterized in that:

the flip cover assembly comprises a cover body and a second middle frame, the second middle frame is arranged on one side, facing the shell assembly, of the cover body, an installation through groove and a cover plate are arranged on the second middle frame, the installation through groove comprises a first opening, the first opening faces the shell assembly, the cover plate covers the first opening, two opposite side walls of the installation through groove are respectively provided with a hinge groove, an arc support surface is arranged on the hinge groove, two opposite side walls of the cover plate are respectively provided with a hinge column, the hinge columns are arranged in the hinge grooves, and the radial side walls of the hinge columns are abutted to the arc support surface; the cover plate rotates around the axis of the hinge post, and the outer surface of the cover plate facing away from the first opening faces the first middle frame.

2. A thermal printer for quick replacement of a memory card as in claim 1 wherein:

the hinge groove is provided with an installation opening in the radial direction of the hinge column, and the hinge column penetrates through the installation opening and slides into the hinge groove.

3. A thermal printer for quick replacement of a memory card as in claim 2 wherein:

the hinge structure is characterized in that connecting plates are respectively arranged on two oppositely-arranged side walls of the cover plate, the hinge columns are arranged on one sides of the connecting plates facing the hinge grooves, limiting blocks are arranged in the installation through grooves, limiting grooves are formed between the limiting blocks and the side walls of the installation through grooves, and the connecting plates are located in the limiting grooves.

4. A thermal printer for quick replacement of a memory card as in claim 3 wherein:

the stopper orientation one of apron is served and is provided with dodges the recess, dodge the recess with the hinge groove is in communicate in the axial of hinge post, dodge and be provided with the circular arc bent angle in the recess.

5. A thermal printer for quick replacement of a memory card as in claim 1 wherein:

be provided with the joint piece on the apron, the casing orientation be provided with the protruding piece of joint on one side of logical groove of installation, be provided with the joint groove on the protruding piece of joint, the joint piece sets up the joint inslot.

6. A thermal printer for quick replacement of a memory card as in claim 5 wherein:

the joint piece orientation be provided with the butt face on one side of the protruding piece of joint, the arc is personally submitted to the butt.

7. A thermal printer for quick change of memory card as claimed in any one of claims 1 to 6, wherein:

the thermal printer further comprises a control assembly, the control assembly comprises a control main board and a touch screen, the touch screen is arranged on the outer wall of the cover body, and the control main board is located between the touch screen and the second middle frame;

the installation is led to the inslot and is provided with the draw-in groove, the draw-in groove is used for placing the storage card, be connected with the connecting wire on the draw-in groove, be provided with the second opening on the installation leads to the inslot, the connecting wire pass the second opening with control mainboard connection.

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