Embedded printer without screws

Abstract

The present invention provides an embedded printer that can be disassembled without screws, including a printer body and an external device, wherein the external device has a cavity for accommodating the printer body, the printer body is laterally penetrated by at least one guide rod, and fasteners are connected to the outside of the printer body at both ends of the guide rod, and buckles for the fasteners to engage are provided in the cavity of the external device for accommodating the printer body, and the fasteners at both ends of the guide rod can move relative to the buckle positions in the cavity, so that the fasteners can be engaged with or disengaged from the buckle positions. The embedded printer that can be disassembled without screws provided by the present invention can be connected to the external device by engaging or disengaging the fasteners at the two ends of the guide rods on the printer body with the buckle positions in the cavity of the external device, without using screws and tools, and the connection method is stable and reliable.

Description

Technical Field

[0001] The invention relates to the field of printers, and in particular to an embedded printer that is free of screws for disassembly and assembly. Background Art

[0002] All embedded printers currently on the market require screws on the printer to be turned when the printer is installed in an external device such as a cash register or a number-taking machine. The force of the screws being turned left and right will cause the buckle on the printer to rotate left and right, and as the screws are turned, they will rise and get stuck inside the external device, thus fixing the printer. When removing the printer, turn the screws in the opposite direction.

[0003] For example, the patent number CN201720452197.1 is an "embedded printer fastener structure". The embedded printer includes a lock nut, a screw, and a block placed in a groove on the side of the housing. The block includes a connecting block, one end of the connecting block is provided with a pressure block, and the other end of the connecting block is provided with a mounting block. The pressure block and the mounting block are respectively located at both ends of the connecting block to form a Z-shaped block. The mounting block is provided with a first mounting hole and a second mounting hole. The lock nut is embedded in the first mounting hole. The screw passes through the threaded hole on the front of the housing and the second mounting hole and then screws into the lock nut. In the absence of external force, the friction between the lock nut and the screw can prevent the block from rotating relative to each other. When the screw is tightened by turning right, the stopper rotates outward along with the direction of the screw rotation, and is blocked by the edge of the groove at the 90-degree position and stops rotating. After that, the anti-loosening nut moves along the outer thread of the screw until the screw is tightened, at which point the print cartridge is installed and fixed. Conversely, when the screw is loosened by turning left, the stopper moves along the thread, gets rid of the obstruction of the edge of the groove, and then rotates 90 degrees in the opposite direction with the screw to return to its original position, at which point the print cartridge can be removed.

[0004] In summary, in the prior art embedded printers, it is troublesome to remove screws when installing and removing external devices; and there is a possibility that the left and right twisting force of the screws cannot make the buckle detach from the external device, resulting in the risk of being unable to be removed, and the probability of this risk is also relatively high. Summary of the invention

[0005] The present invention aims to provide an embedded printer that can be disassembled without screws, so as to solve the problem in the prior art that screws need to be disassembled when installing and removing external devices from the embedded printer, and the disassembly and assembly requirements are high.

[0006] The present invention provides an embedded printer that is free of screws for disassembly and assembly, comprising a printer body and an external device, wherein the external device has a cavity for accommodating the printer body, at least one guide rod is laterally penetrated through the printer body, the guide rod can move laterally relative to the printer body, fasteners are connected to the outside of the printer body at both ends of the guide rod, buckling positions for the fasteners to engage are arranged in the cavity of the external device for accommodating the printer body, the fasteners at both ends of the guide rod can move relative to the buckling positions in the cavity, so that the fasteners can be engaged with or disengaged from the buckling positions.

[0007] Furthermore, an elastic member is provided on the guide rod to keep the buckle member in a snap-fit ​​connection with the buckle position.

[0008] Furthermore, the fastener includes hanging plates arranged at both ends of the guide rod, one end of the hanging plate connected to the guide rod is a fixed end, and the other end is a free end, and the free ends of the two hanging plates have hook portions protruding in the same direction, and a buckle position for the hook portion of the fastener to be engaged and connected is provided in the chamber of the external device.

[0009] Furthermore, the hanging plates at both ends of the guide rod are respectively a first hanging plate and a second hanging plate, the hook portion on the free end of the first hanging plate is a first hook portion, and the hook portion on the free end of the second hanging plate is a second hook portion, wherein the first hook portion raised on the first hanging plate faces the printer body, and the second hook portion raised on the second hanging plate faces away from the printer body, and a limiting column is arranged on the surface of the first hanging plate facing the printer body, the limiting column abuts against the side wall of the printer body, and there is a distance between the first hook portion and the side wall of the printer body.

[0010] Furthermore, the elastic member is a locking spring sleeved on the guide rod, one end of the locking spring abuts against the surface of the second hanging plate facing the printer body, and the other end of the locking spring abuts against a vertical locking plate inside the printer body.

[0011] Furthermore, there are two guide rods which are arranged in parallel, and the locking spring is sleeved on one of the guide rods.

[0012] Furthermore, a tilting block is provided on the surface of the second hanging plate facing away from the printer body, the upper surface of the tilting block has a sliding tilting surface facing outward and downward, a button is provided on the sliding tilting surface, and the button has a pressing tilting surface matching the sliding tilting surface of the tilting block.

[0013] Furthermore, the button includes a cylinder, one end of which is provided with a cap, and the other end of the cylinder is a free end, the free end of the cylinder passes through a transverse card plate in the printer body to abut the sliding inclined surface of the inclined block, the free end of the cylinder has a pressing inclined surface that matches the sliding inclined surface of the inclined block, a return spring is sleeved on the cylinder, one end of the return spring abuts the bottom of the cap, and the other end of the return spring abuts the transverse card plate in the printer body.

[0014] Furthermore, a dislocation spring for popping up the printer body is arranged in the cavity of the external device.

[0015] Furthermore, the dislocation spring is a conical spring, the wider end of the conical spring is connected to the inner bottom of the chamber of the external device, the narrower end of the conical spring is connected to the bottom of the printer body, and the bottom of the printer body is provided with a boss that is inserted into the narrower end of the conical spring.

[0016] The embedded printer provided by the present invention is provided with a screw-free disassembly device, which is engaged or disengaged with the buckle position in the cavity of the external device through the buckles at both ends of the guide rod on the printing body, and an elastic member is provided on the guide rod to keep the buckle and the buckle position engaged. The structure is reasonable and simple, and the printer body and the external device can be connected without using screws and tools. The connection method is stable and reliable. In addition, by pressing the column of the button downward toward the tilting block, the pressing inclined surface of the column presses the sliding inclined surface of the tilting block downward, so that the second hook part of the second hanging plate moves horizontally and disengages from the buckle position engaged therewith. At the same time, the second hook part of the second hanging plate also disengages from the buckle position engaged therewith. At this time, the printer body is ejected by the dislocation spring in the cavity of the external device. The structure is compact and reasonable, and the practicability is strong, which is suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The exploded schematic diagram of the screw-free disassembly and assembly embedded printer provided in an embodiment of the present invention is schematically illustrated;

[0019] Figure 2 A schematic diagram of a printer body provided in an embodiment of the present invention is schematically shown;

[0020] Figure 3 A schematic diagram schematically illustrates a guide rod and buckles at both ends thereof provided in an embodiment of the present invention;

[0021] Figure 4 A top view of an embedded printer without screw disassembly and assembly provided in an embodiment of the present invention is schematically shown;

[0022] Figure 5 Schematically Figure 4 AA section view;

[0023] Figure 6 Schematically Figure 4 BB section view;

[0024] Figure 7 A schematic diagram of the connection between the button and the tilting block of the second hanging plate provided in an embodiment of the present invention is schematically shown;

[0025] Figure 8 The schematic diagram schematically illustrates the cooperation between the first interface of the first PCB board and the second interface of the second PCB board provided in the embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference Figures 1 to 8The present invention provides an embedded printer for screw-free disassembly and assembly, comprising a printer body 1 and an external device 2, wherein the external device 2 has a chamber 3 for accommodating the printer body 1, at least one guide rod 4 is laterally penetrated through the printer body, the guide rod 4 can move laterally relative to the printer body 1, and fasteners 5 are connected to the outside of the printer body 1 at both ends of the guide rod 4, and fasteners 5 are provided in the chamber 3 for accommodating the printer body 1 of the external device 2, and fasteners 6 for fasteners 5 to engage with are provided, and the fasteners 5 at both ends of the guide rod 4 can move relative to the fasteners 6 in the chamber 3, so that the fasteners 5 can be engaged with or disengaged from the fasteners 6, thereby realizing the disassembly and assembly between the printer body 1 and the external device 2.

[0031] As a specific implementation of this embodiment, the buckle 5 includes hanging plates arranged at both ends of the guide rod 4, one end of the hanging plate connected to the guide rod 4 is a fixed end, and the other end is a free end, and the free ends of the two hanging plates have hook portions protruding in the same direction, and a buckle position 6 for the hook portion of the buckle 5 to be engaged and connected is provided in the chamber 3 of the external device 2. In this embodiment, the buckle position 6 is a convex edge facing the same direction in the chamber 3 of the external device 2 for the hook portion of the buckle 5 to be engaged and connected.

[0032] More specifically, the hanging plates at both ends of the guide rod 4 are respectively a first hanging plate 51 and a second hanging plate 52, the hook portion on the free end of the first hanging plate 51 is a first hook portion 53, and the hook portion on the free end of the second hanging plate 52 is a second hook portion 54, wherein the first hook portion 53 protruding on the first hanging plate 51 faces the printer body 1, and the second hook portion 54 protruding on the second hanging plate 52 faces away from the printer body 1, and a limiting column 8 is arranged on the surface of the first hanging plate 51 facing the printer body 1, that is, the limiting column 8 and the first hook portion 53 are located on the same surface of the first hanging plate 51. In this embodiment, the limiting column 8 is arranged on the guide rod 4, and the limiting column 8 abuts against the side wall of the printer body 1. There is a distance between the first hook portion 53 and the side wall of the printer body 1. Since the first hook portion 53 faces the printer body 1, the distance between the first hook portion 53 and the side wall of the printer body 1 is for the buckle position 6 to be snapped into, so that the first hook portion 53 can be smoothly snap-fitted and connected with the buckle position 6.

[0033] As a preferred embodiment, an elastic member is provided on the guide rod 4 to keep the locking member 5 and the locking position 6 in a locking connection. In this embodiment, the elastic member is a locking spring 7 sleeved on the guide rod 4, one end of the locking spring 7 abuts against the surface of the second hanging plate 52 facing the printer body 1, and the other end of the locking spring 7 abuts against a vertical locking plate 19 inside the printer body 1.

[0034] The embedded printer without screw disassembly provided by the embodiment of the present invention is engaged or disengaged with the buckle position 6 in the cavity of the external device 2 by the buckling parts 5 at both ends of the guide rod 4 on the printing body, and an elastic part is provided on the guide rod 4 to keep the buckle part 5 and the buckle position 6 engaged. The structural design is reasonable and simple, and the printer body and the external device can be connected without using screws and tools. The connection method is stable and reliable.

[0035] In order to make the connection between the printer body 1 and the external device 2 more stable, two guide rods 4 are designed and arranged in parallel, and the locking spring 7 is sleeved on one of the guide rods 4 .

[0036] In order to enable the fastener 5 to be smoothly disengaged from the buckle position 6, a tilting block 10 is provided on the surface of the second hanging plate 52 facing away from the printer body 1. The tilting block 10 and the second hook portion 54 are located on the same surface of the second hanging plate 52. The upper surface of the tilting block 10 has a sliding inclined surface 101 pointing outward and downward. A button 9 is provided on the sliding inclined surface 101. The button 9 has a pressing inclined surface 91 that matches the sliding inclined surface 101 of the tilting block 10.

[0037] Specifically, refer to Figure 7 The button 9 includes a column 92, one end of which is provided with a cap 93, and the other end of the column 92 is a free end. The free end of the column 92 passes through a horizontal card plate 11 in the printer body 1 to abut against the sliding inclined surface 101 of the tilting block 10. The free end of the column 92 is provided with a pressing inclined surface 91 that matches the sliding inclined surface 101 of the tilting block 10. A return spring 12 is sleeved on the column 92, one end of the return spring 12 abuts against the bottom of the cap 93, and the other end of the return spring 12 abuts against the horizontal card plate 11 in the printer body 1.

[0038] In order to better separate the printer body 1 from the cavity of the external device 2, a dislocation spring for popping up the printer body 1 is provided in the chamber 3 of the external device 2. In this embodiment, the dislocation spring is a conical spring 13, the wider end of the conical spring 13 is connected to the inner bottom of the chamber 3 of the external device 2, the narrower end of the conical spring 13 is connected to the bottom of the printer body 1, and a boss 14 is provided at the bottom of the printer body 1 to engage with the narrower end of the conical spring 13.

[0039] By pressing the column 92 of the button 9 downward toward the tilting block 10, the pressing inclined surface 91 of the column 92 presses the sliding inclined surface 101 of the tilting block 10 downward, so that the second hook portion 54 of the second hanging plate 52 moves horizontally to disengage from the buckle position 6 engaged therewith. At the same time, the second hook portion 54 of the second hanging plate 52 also disengages from the buckle position 6 engaged therewith. At this time, the printer body 1 is ejected by the disengagement spring in the chamber 3 of the external device 2.

[0040] In addition, in order to facilitate mold opening, the buckle members 5 at both ends of the guide rod 4 can be designed to have the same structure.

[0041] As a preferred embodiment, refer to Figure 8 A first PCB board 15 is arranged at the bottom of the printer body 1, and a second PCB board 16 is arranged at the inner bottom of the chamber 3 of the external device 2. A first interface 17 is arranged on the first PCB board 15, and a second interface 18 matching with the first interface 17 is arranged on the second PCB board 16. After the buckles 5 at both ends of the guide rod 4 on the printing body are engaged with the buckle positions 6 in the cavity of the external device 2, the first interface 17 and the second interface 18 cooperate with each other to realize the wire-free connection between the printer body 1 and the external device 2.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An embedded printer that does not require screws to be disassembled and assembled. It is characterized in that The printer comprises a printer body and an external device, wherein the external device has a chamber for accommodating the printer body, the printer body is laterally penetrated by at least one guide rod, and buckles are connected at both ends of the guide rod outside the printer body, buckles for the buckles to engage are arranged in the chamber of the external device for accommodating the printer body, and the buckles at both ends of the guide rod can move relative to the buckles in the chamber, so that the buckles can be engaged with or disengaged from the buckles; An elastic member is provided on the guide rod to keep the buckle member and the buckle position in a snap-fit ​​connection; The fastener comprises hanging plates arranged at both ends of the guide rod, one end of the hanging plate connected to the guide rod is a fixed end, and the other end is a free end, and the free ends of the two hanging plates have hook portions protruding in the same direction, and a buckle position for the hook portion of the fastener to be engaged and connected is arranged in the chamber of the external device; The hanging plates at both ends of the guide rod are respectively a first hanging plate and a second hanging plate, the hook portion on the free end of the first hanging plate is a first hook portion, and the hook portion on the free end of the second hanging plate is a second hook portion, wherein the first hook portion protruding on the first hanging plate faces the printer body, and the second hook portion protruding on the second hanging plate faces away from the printer body, and a limiting column is arranged on the surface of the first hanging plate facing the printer body, the limiting column abuts against the side wall of the printer body, and there is a distance between the first hook portion and the side wall of the printer body; The elastic member is a locking spring sleeved on the guide rod, one end of the locking spring abuts against the surface of the second hanging plate facing the printer body, and the other end of the locking spring abuts against a vertical locking plate inside the printer body; A tilting block is provided on the surface of the second hanging plate facing away from the printer body, the upper surface of the tilting block has a sliding tilting surface facing outward and downward, a button is provided on the sliding tilting surface, and the button has a pressing tilting surface matching the sliding tilting surface of the tilting block; The button includes a cylinder, one end of which is provided with a cap, and the other end of the cylinder is a free end, the free end of the cylinder passes through a transverse card plate in the printer body to abut the sliding inclined surface of the inclined block, the free end of the cylinder is provided with a pressing inclined surface that matches the sliding inclined surface of the inclined block, a return spring is sleeved on the cylinder, one end of the return spring abuts the bottom of the cap, and the other end of the return spring abuts the transverse card plate in the printer body.

2. The screw-free embedded printer as claimed in claim 1, It is characterized in that There are two guide rods which are arranged in parallel, and the engaging spring is sleeved on one of the guide rods.

3. The screw-free embedded printer as claimed in claim 1 or 2, It is characterized in that A dislocation spring for popping up the printer body is arranged in the cavity of the external device.

4. The screw-free embedded printer as claimed in claim 3, It is characterized in that The dislocation spring is a conical spring, the wider end of which is connected to the inner bottom of the chamber of the external device, and the narrower end of which is connected to the bottom of the printer body. The bottom of the printer body is provided with a boss that is inserted into the narrower end of the conical spring.

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