Movement of non-rotating-shaft rotating latch hook and thermal printer

Abstract

The utility model provides a machine core of non-rotating shaft rotation latch hook and thermal printer, including thermosensitive piece, rubber roll, seat body and lock catch subassembly, the lock catch subassembly includes lock catch piece and lock catch elastic piece, lock arm is equipped with the lock catch on the upper part, lock arm is equipped with the hinge groove on the lower part, the seat body is equipped with the hinge lug at thermosensitive piece both ends, and the hinge lug is equipped with the hinge groove on the lower part. The hinge groove is hinged to the hinge protruding block, the lock arm rotates around the hinge protruding block, the lock catch can move towards or away from the positioning groove, the lock catch elastic piece is connected between the connecting plate and the base body, the lock catch elastic piece applies elastic lock catch force towards the positioning groove to the lock catch, and the lock catch is detachably clamped with the axial end of the rubber roller. According to the scheme, the hinged grooves and the hinged protruding blocks are arranged at the corresponding positions of the lock arms on the two sides, the lock arms and the connecting plate can stably rotate through hinged matching of the inwards-concave arc faces and the outwards-convex arc faces, the lock catch assembly is integrally arranged, the rotation stability of the lock plate is improved, a rotating shaft is saved, and meanwhile the cost is effectively controlled.

Description

Technical Field

[0001] The utility model relates to the field of thermal printing equipment, in particular to a movement of a non-rotating shaft rotating lock hook and a thermal printer. Background Art

[0002] With the popularization of thermal printers, they are used not only in bank ATMs, supermarket cash registers and e-commerce delivery offices, but also in the rapidly growing e-commerce and express delivery industries. There are higher requirements for the stability, durability, and printing accuracy and speed of the printers, especially for the stability of the rubber roller at high speeds, which directly affects the clamping, paper feeding and imaging quality of the printing paper between the rubber roller and the thermal film.

[0003] To this end, it is necessary to equip the rubber roller with a stable locking mechanism, which must also be easy to release. The existing clamping roller generally clamps the two ends of the rubber roller by two locking plates, and the locking plates are connected by a rotating shaft. Therefore, it is necessary to design a corresponding structural space for the rotating shaft, which is not conducive to further space saving layout and further cost saving. Utility Model Content

[0004] The first object of the utility model is to provide a movement with a simplified assembly of a rotating lock hook structure.

[0005] The second object of the utility model is to provide a thermal printer with the above-mentioned core.

[0006] In order to achieve the first purpose of the utility model, the utility model provides a non-rotating shaft rotating lock hook movement, including a thermal sheet, a rubber roller and a seat body, the thermal sheet is arranged on the seat body, the seat body is respectively provided with positioning grooves at both ends of the thermal sheet based on the paper width direction, the positioning groove is used to install the axial end of the rubber roller, the positioning groove is provided with an opening at the top, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel; the movement also includes a lock assembly, the lock assembly includes a lock piece and a lock elastic piece, the lock piece includes two lock arms and a lock arm connected to the two lock arms A connecting plate between the arms, each locking arm is provided with a lock buckle at the upper part, and each locking arm is provided with a hinge groove at the lower part. The base body is provided with hinge protrusions at both ends of the thermal sheet based on the paper width direction. The hinge groove is hinged to the hinge protrusion. A pull portion is provided on one of the locking arms. The locking arm rotates around the hinge protrusion, and the lock buckle can move toward or away from the positioning groove. The lock buckle elastic member is connected between the connecting plate and the base body. The lock buckle elastic member applies an elastic locking force toward the positioning groove to the lock buckle, and the lock buckle can be detachably engaged with the axial end of the rubber roller.

[0007] A further solution is that the seat body is provided with a mounting groove extending along the paper width direction, the mounting groove has mounting inner side walls at both ends along the paper width direction, positioning grooves and hinged protrusions are arranged on the mounting inner side walls, each side of the mounting inner side wall is provided with a thermosensitive slide groove, the thermosensitive sheet is installed between the thermosensitive slide grooves on both sides, and one side locking arm is located between the thermosensitive sheet and one side of the mounting inner side wall; the connecting plate is located on the back side of the thermosensitive sheet relative to the rubber roller, and the movement also includes a pressing elastic member, which is connected between the thermosensitive sheet and the connecting plate, and the pressing elastic member applies an elastic pressing force toward the rubber roller to the thermosensitive sheet.

[0008] A further solution is that a rear wall is provided between the two inner side walls of the installation groove, and the rear wall is provided with a limiting groove extending along the length direction of the paper. The locking elastic member adopts a tension spring, the first end of the tension spring is connected to the bottom of the limiting groove, and the second end of the tension spring is connected to the connecting plate.

[0009] A further solution is that a limiting convex edge is provided at the upper end of the connecting plate, the second end of the tension spring is connected to the limiting convex edge, and the limiting convex edge can be adjacent to the upper part of the rear wall.

[0010] A further solution is that a first limit block is provided on the other locking arm, and a second limit block is provided on the inner side wall corresponding to the side of the limit block. The first limit block is located on the other side of the hinge groove relative to the connecting plate, and the first limit block is located below the second limit block and cooperates with the second limit block to limit the position.

[0011] A further solution is that a driving assembly is arranged on the outer side of the inner side wall, and a driving gear is arranged on the outer side of the positioning groove at the axial end of the rubber roller. The driving assembly includes a driving motor and a transmission gear, and the transmission gear is connected between the driving gear and the driving motor.

[0012] A further solution is that the pull portion is located on a side close to the driving assembly, and the pull portion extends out of the installation slot.

[0013] A further solution is that the hinge groove is provided with an inner concave arc surface, and the hinge protrusion is provided with an outer convex arc surface, and the inner concave arc surface and the outer convex arc surface are hingedly matched.

[0014] In order to achieve the second purpose of the utility model, the utility model provides a thermal printer, including a cover body, a base and a movement as described above, the base body is arranged on the base, the rubber roller is arranged on the cover body, and the cover body and the base are hinged.

[0015] The beneficial effect of the utility model is that, compared with the solution of using a rotating shaft in the prior art, the present invention sets hinge grooves and hinge protrusions at the positions corresponding to the lock arms on both sides, and uses the inner concave arc surface and the outer convex arc surface to hinge and cooperate, so that the lock arm and the connecting plate can rotate stably, and the lock catch assembly is arranged in an integrated manner to improve the rotation stability of the lock plate, save the rotating shaft, and effectively control the cost. Furthermore, by arranging the pressing elastic member and the limiting groove, the thermal sensitive sheet and the lock catch assembly can operate more stably. In addition, the limiting convex edge can be adjacent to the upper part of the rear wall, and the first limiting block and the second limiting block are used to limit the rotation position of the lock catch assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an embodiment of the movement of the utility model.

[0017] Figure 2 It is a structural diagram of the movement embodiment of the utility model from another perspective.

[0018] Figure 3 It is an exploded view of an embodiment of the movement of the utility model.

[0019] Figure 4 It is a further exploded view of the embodiment of the movement of the utility model.

[0020] Figure 5 It is a cross-sectional view of an embodiment of the movement of the utility model.

[0021] Figure 6 It is a cross-sectional view of the embodiment of the movement of the utility model in a locked state.

[0022] Figure 7 It is a cross-sectional view of the embodiment of the movement of the utility model in the unlocked state.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0024] Reference Figures 1 to 7The movement includes a thermal sheet 3, a rubber roller 16, a seat body 1 and a locking assembly. The thermal sheet 3 is arranged on the seat body 1. The seat body 1 is respectively provided with positioning grooves 113 at both ends of the thermal sheet 3 based on the paper width direction Y. The positioning groove 113 is used to install the axial end 161 of the rubber roller 16. The positioning groove 113 is provided with an opening at the top. The seat body 1 is provided with a mounting groove 11 extending along the paper width direction Y. The mounting groove 11 has mounting inner side walls 111 at both ends along the paper width direction Y. The mounting groove 11 is provided with a rear wall 112 between the two mounting inner side walls 111. The positioning groove 113 is provided on the mounting inner side wall 111. The mounting inner side wall 111 on each side is provided with a thermal slide groove 114. The thermal sheet 3 is installed between the thermal slide grooves 114 on both sides using the mounting blocks 31 on both sides. The thermal sheet 3 and the rubber roller 16 are opposite to each other and form a paper feeding channel. The mounting groove 11 is provided with a paper guide bracket 12 on the outside of the thermal film 3. The paper guide bracket 12 is provided with a guiding slope. The printing paper passes through the paper feeding channel and is guided by the guiding slope, and then input to the clamping position of the thermal film 3 and the rubber roller 16.

[0025] The locking assembly includes a locking member 2 and a locking elastic member 215. The locking member 2 includes two locking arms 21 and a connecting plate 22 connected between the two locking arms 21. Each locking arm 21 is provided with a locking member 211 at the upper part, and each locking arm 21 is provided with a hinge groove 212 at the lower part. The base body 1 is provided with hinge protrusions 116 at both ends of the thermal film 3 based on the paper width direction Y. The hinge protrusions 116 are provided on the installation inner side wall 111, and the hinge protrusions 116 are located below the positioning groove 113. The hinge groove 212 is provided with an inner concave arc surface, and the hinge protrusion 116 is provided with an outer convex arc surface. The inner concave arc surface is hingedly matched with the outer convex arc surface to realize the hinge connection between the hinge groove 212 and the hinge protrusion 116. One side locking arm 21 is located between the thermal film 3 and one side installation inner side wall 111, and the locking member 2 is supported and rotated on the base body 1.

[0026] The connecting plate 22 is located on the back side of the thermal film 3 relative to the rubber roller 16. The movement also includes a pressing elastic member (not shown), which is connected between the thermal film 3 and the connecting plate 22. The pressing elastic member applies an elastic pressing force to the thermal film 3 toward the rubber roller 16.

[0027] The rear wall 112 is provided with a limiting groove 115 extending along the paper length direction X, and the paper length direction X is perpendicular to the paper width direction Y. The locking elastic member 215 adopts a tension spring, and the first end of the tension spring is connected to the bottom of the limiting groove 115. The upper end of the connecting plate 22 is provided with a limiting convex edge 221, and the second end of the tension spring is connected to the limiting convex edge 221 of the connecting plate 22. The limiting convex edge 221 can be adjacent to the upper part of the rear wall 112. The locking arm 21 rotates around the hinged protrusion 116, and the lock 211 can move toward or away from the positioning groove 113. The connecting plate 22 and the base body 1 are connected by the locking elastic member 215. The locking elastic member 215 applies an elastic locking force of the locking buckle 211 toward the positioning groove 113 to the locking buckle 211, and the locking buckle 211 can be detachably engaged with the axial end 161 of the rubber roller 16.

[0028] A driving assembly is arranged outside the inner side wall 111, and a driving gear 15 is arranged outside the positioning groove 113 at the axial end 161 of the rubber roller 16. The driving assembly includes a driving motor 13 and a transmission gear 14, and the transmission gear 14 is connected between the driving gear 15 and the driving motor 13. A pull portion 214 is arranged on one of the lock arms 21, and the pull portion 214 is located on a side close to the driving assembly. The pull portion 214 extends outside the installation groove 11, and the pull portion 214 is driven by an external force, thereby driving the lock assembly to rotate, so as to separate the lock 211 from the rubber roller 16.

[0029] A first limiting block 213 is provided on the other locking arm 21, and a second limiting block 117 is provided on the inner side wall 111 corresponding to one side of the limiting block. The first limiting block 213 is located on the other side of the hinge groove 212 relative to the connecting plate 22. The first limiting block 213 is located below the second limiting block 117 and cooperates with the second limiting block 117 to limit the position of the locking arm 21.

[0030] The thermal printer includes a cover body, a base and a movement as described above, wherein the base body 1 is arranged on the base, the rubber roller 16 is rotatably arranged on the cover body through a mounting bracket 17, an axle sleeve is arranged outside the axial end 161 of the rubber roller 16, a paper bin is arranged on the base, and the cover body covers the paper bin and is hinged to the base.

[0031] See also Figure 6 When the cover is closed, the axial end 161 is located in the positioning groove 113, and the lock 211 is engaged with the axial end 161. Figure 7 When the cover needs to be opened, the thermal printer drives the lever 214 to move by pressing a button, thereby driving the lock 211 away from the axial end 161 of the rubber roller 16, and then the axial end 161 can be separated from the positioning groove 113, thereby opening the cover to facilitate the replacement of printing paper.

[0032] As can be seen from the above, in this case, hinge grooves and hinge protrusions are set at the positions corresponding to the lock arms on both sides, and the inner concave arc surface and the outer convex arc surface are hinged and matched, so that the lock arm and the connecting plate can rotate stably, and the lock assembly is arranged in an integrated manner to improve the rotation stability of the lock plate, save the rotating shaft, and effectively control the cost. Furthermore, by arranging the pressing elastic member and the limiting groove, the thermal sensitive sheet and the lock assembly can operate more stably. In addition, the limiting convex edge can be adjacent to the upper part of the rear wall, and the first limiting block and the second limiting block are used to limit the rotation position of the lock assembly.

Claims

1. A mechanism for a non-rotating shaft rotating lock hook, comprising a thermal sheet, a rubber roller and a seat, wherein the thermal sheet is arranged on the seat, and the seat is provided with positioning grooves at both ends of the thermal sheet based on the paper width direction, respectively, wherein the positioning grooves are used to install the axial ends of the rubber roller, and the positioning grooves are provided with openings at the top, wherein the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel; Features: The movement also includes a lock assembly, which includes a lock piece and a lock elastic piece, the lock piece includes two lock arms and a connecting plate connected between the two lock arms, each of the lock arms is provided with a lock at the upper part, and each of the lock arms is provided with a hinge groove at the lower part, the base body is provided with hinge protrusions at both ends of the thermal sheet based on the paper width direction, the hinge groove is hinged to the hinge protrusion, a pull portion is provided on one of the lock arms, the lock arm rotates around the hinge protrusion, the lock can be moved toward or away from the positioning groove, the lock elastic piece is connected between the connecting plate and the base body, the lock elastic piece applies an elastic locking force toward the positioning groove to the lock, and the lock can be detachably engaged with the axial end of the rubber roller.

2. The movement according to claim 1, characterized in that: The seat body is provided with a mounting groove extending in the paper width direction, the mounting groove has mounting inner side walls at both ends in the paper width direction, the positioning groove and the hinged protrusion are arranged on the mounting inner side walls, each side of the mounting inner side walls is provided with a thermal slide groove, the thermal sheet is installed between the thermal slide grooves on both sides, and the locking arm on one side is located between the thermal sheet and the mounting inner side wall on one side; The connecting plate is located on the back side of the thermal sheet relative to the rubber roller. The movement also includes a pressing elastic member connected between the thermal sheet and the connecting plate. The pressing elastic member applies an elastic pressing force to the thermal sheet toward the rubber roller.

3. The movement according to claim 2, characterized in that: The installation groove is provided with a rear wall between the two installation inner side walls, and the rear wall is provided with a limiting groove extending along the length direction of the paper. The locking elastic member adopts a tension spring, the first end of the tension spring is connected to the bottom of the limiting groove, and the second end of the tension spring is connected to the connecting plate.

4. The movement according to claim 3, characterized in that: The upper end of the connecting plate is provided with a limiting convex edge, the second end of the tension spring is connected to the limiting convex edge, and the limiting convex edge can be adjacent to the upper part of the rear wall.

5. The movement according to claim 2, characterized in that: A first limit block is arranged on the other locking arm, and a second limit block is arranged on the installation inner wall on the side corresponding to the limit block. The first limit block is located on the other side of the hinge groove relative to the connecting plate, and the first limit block is located below the second limit block and cooperates with the second limit block for limiting.

6. The movement according to any one of claims 2 to 5, characterized in that: A driving assembly is arranged on the outer side of the mounting inner side wall, a driving gear is arranged on the outer side of the positioning groove at the axial end of the rubber roller, the driving assembly comprises a driving motor and a transmission gear, and the transmission gear is connected between the driving gear and the driving motor.

7. The movement according to claim 6, characterized in that: The pull portion is located at a side close to the driving assembly, and the pull portion extends out of the installation slot.

8. The movement according to any one of claims 1 to 5, characterized in that: The hinge groove is provided with an inner concave arc surface, and the hinge protrusion is provided with an outer convex arc surface, and the inner concave arc surface is hingedly matched with the outer convex arc surface.

9. A thermal printer, characterized in that: It comprises a cover body, a base and a movement as claimed in any one of claims 1 to 8, wherein the base body is arranged on the base, the rubber roller is arranged on the cover body, and the cover body and the base are hinged.

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