Novel opening structure of printer
By incorporating a hinged structure between the swing arm and the machine housing, along with a stop and limit component, the maximum opening angle of the cover is limited, thus solving the problem of the cover easily tipping over and achieving stability and sealing of the printer.
Patent Information
- Application Number
- CN202520810129.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-25
AI Technical Summary
When changing thermal paper, existing thermal printers are prone to tipping over due to excessive angle of the top cover, resulting in poor stability.
The structure uses a swing arm hinged to the housing, combined with a stop and limit component to restrict the maximum opening angle of the cover, thus preventing the cover angle from being too large.
This effectively ensures the stability of the printer when the cover is open and ensures a tight fit between the cover and the machine housing to prevent tipping.
Smart Images
Figure CN223850283U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to printer technical field especially relates to a novel opening structure of printer. BACKGROUND
[0002] The heat-sensitive printer is a kind of printing equipment that presents information such as text, image by the chemical reaction of heat-sensitive head on heat-sensitive paper, it does not need ink cartridge or carbon powder, printing speed is fast and noise is small, using the heat-sensitive paper heat discoloration characteristics, heat-sensitive head is heated to appropriate temperature, and heat-sensitive paper corresponding part discolors to realize printing, and it is widely used in supermarket cash register receipt, convenience store shopping voucher, logistics express waybill and other scenes with higher requirements for printing speed and convenience.
[0003] The existing heat-sensitive printer needs to rotate the upper cover to open when replacing heat-sensitive paper, the upper cover often appears the condition of excessive rotation angle and extending to the rear side of the casing due to the lack of limitation of the opening angle of the upper cover of the traditional heat-sensitive printer, the upper cover excessively extending to the rear is easy to cause the shift of gravity center and make the printer fall down, and the stability is poor. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a novel opening structure of printer that can limit the opening angle of the upper cover, effectively solving the problems in the background art.
[0005] To achieve the above object, the utility model provides the following technical scheme.
[0006] A novel opening structure of printer, including casing body and cover body, a pair of swing arms are fixed on the cover body, the two swing arms are respectively hinged and installed on the two sides of the casing body to provide the cover body with rotation ability, the casing body is provided with abutting limiting parts, and the abutting limiting parts are blocked with the swing arms during the rotation and opening of the cover body to limit the maximum opening angle of the cover body.
[0007] Therefore, the swing arms are hinged with the casing body to provide the cover body with rotation ability, the abutting limiting parts are blocked with the swing arms during the rotation and opening of the cover body, the opening angle of the cover body is prevented from being too large to make the printer fall down, and the stability of the printer during the opening of the cover body is effectively ensured.
[0008] Further, the two sides of the casing body are respectively provided with mounting holes, and the two swing arms are respectively fixed with convex shafts, and the two convex shafts are respectively rotatably installed in the mounting holes on the corresponding sides.
[0009] Further, the swing arms are all J-shaped, one end of the swing arm serves as a fixed part and is fixedly connected with the cover body, and the other end of the swing arm serves as a hinged part, and the convex shafts are correspondingly fixed at the hinged parts.
[0010] By designing the swing arm as J-shaped, the cover has relative displacement in horizontal and vertical upward directions when rotating around the hinge point to open, thereby avoiding movement interference between the cover and the machine shell, and in addition, when the cover is rotated to close, the swing arm guides and limits the position and posture of the cover, so that the cover can be accurately positioned at a position tightly matched with the machine shell when closing, to ensure the tightness of the match between the machine shell and the cover.
[0011] Further, the interference limiting member is a blocking block, the blocking block is fixed on the machine shell and located at one side of the swing arm, the distance between the surface near the one side of the swing arm and the swing arm is smaller upward, to form an arc interference surface, the swing arm has a circular arc transition corner portion, the arc of the circular arc transition corner portion is matched with the arc interference surface, when the circular arc transition corner portion is in interference with the arc interference surface, the cover is rotated to open to the limit position.
[0012] Further, the interference limiting member is a blocking frame, the blocking frame is in U-shaped and fixed on the machine shell, the swing arm passes through the space formed between the blocking frame and the machine shell, the swing arm has an inner recess portion, when the inner recess portion interferes with the blocking frame, the cover is rotated to open to the limit position.
[0013] Further, the openings of the two mounting holes are opposite, and the two convex shafts are respectively fixed on the sides of the two swing arms close to each other.
[0014] When the two convex shafts are fitted into the mounting holes, the swing arm and the machine shell are blocked on both sides to limit the two convex shafts, so that the convex shafts are not excessively moved and fall out of the mounting holes, to ensure the stability of the hinge installation of the swing arm.
[0015] Compared with the prior art, the utility model has the advantages as follows.
[0016] The utility model discloses swing arm and machine shell are hinged, provide the ability of rotation for cover, when the cover is rotated to open, through setting interference limiting member, when the cover is rotated to open, the swing arm is blocked and is positioned, avoid the cover opening angle to be too big and make the printer fall down, effectively guarantee the stability of the printer when the cover is opened.
[0017] The utility model discloses swing arm is designed as J-shaped, make the cover when rotating around the hinge point to open, in horizontal and vertical upward all exist relative displacement, thereby avoid the cover with machine shell to exist movement interference, in addition, when the cover is rotated to close, utilize swing arm to the position and the posture of cover are guided and limit, make the cover when closing can accurate positioning in with machine shell tightly matched position, to guarantee the tightness between machine shell and cover cooperation. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is whole structure perspective schematic diagram for the utility model.
[0019] Figure 2 It is the structure schematic view on the cover body in the utility model;
[0020] Figure 3 It is the mounting hole structure schematic view on the machine shell body in the utility model;
[0021] Figure 4 It is the blocking block structure schematic view in example one;
[0022] Figure 5 It is the U-shaped frame structure schematic view in example two.
[0023] In the drawing: 1, machine shell body; 11, mounting hole; 2, cover body; 3, swing arm; 31, fixed part; 32, hinged part; 33, round arc transition corner part; 34, inner recess; 4, convex shaft; 5, blocking block; 51, arc abutment surface; 6, blocking frame. DETAILED DESCRIPTION
[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. Example one
[0025] Please refer to Figures 1-5 The utility model provides a novel opening structure of printer, including machine shell body 1 and cover body 2, a pair of swing arms 3 are fixed on cover body 2, two swing arms 3 are respectively hinged and installed on the both sides of machine shell body 1, to provide the rotation ability for cover body 2, and machine shell body 1 is equipped with abutment limiting part, in the process of cover body 2 rotation and opening, abutment limiting part and swing arm 3 block cooperation, to limit the maximum opening angle of cover body 2.
[0026] The swing arm 3 is hinged with the machine shell body 1, which provides the rotation ability for the cover body 2. When the cover body 2 is rotated and opened, the swing arm 3 is blocked and limited by the abutment limiting part, so as to avoid the opening angle of the cover body 2 being too large, thereby effectively ensuring the stability of the printer when the cover body 2 is opened.
[0027] Specifically, two sides of machine shell body 1 are respectively equipped with mounting hole 11, two swing arms 3 are respectively fixed with convex shaft 4, two convex shafts 4 are respectively rotationally installed in the mounting hole 11 on the corresponding side, and the swing arm 3 is hinged with the machine shell body 1 by installing the convex shaft 4 in the mounting hole 11.
[0028] Specifically, the swing arms 3 are all J-shaped, one end of the swing arm 3 is a fixed part 31 and is fixedly connected with the cover body 2, and the other end of the swing arm 3 is a hinged part 32, and the convex shaft 4 is correspondingly fixed at the hinged part 32.
[0029] By designing the swing arm 3 as J-shaped, and fixing one end of the swing arm 3 with the cover body 2 and the other end with the casing body 1, the cover body 2 has a relative displacement in both horizontal and vertical directions when being opened by rotating around the hinge point, so that the cover body 2 and the casing body 1 are prevented from interfering with each other. In addition, when the cover body 2 is closed by rotating, the swing arm 3 guides and limits the position and posture of the cover body 2, so that the cover body 2 can be accurately positioned at a position closely matched with the casing body 1 when being closed, thereby ensuring the tightness of the match between the casing body 1 and the cover body 2.
[0030] As shown in Figure 4 , the abutting limiting part is a blocking block 5, which is fixed on the casing body 1 and located on one side of the swing arm 3. The distance between the surface of the blocking block 5 close to one side of the swing arm 3 and the swing arm 3 becomes smaller upward, so as to form an arc abutting surface 51. The swing arm 3 has a circular arc transition corner part 33, and the curvature of the circular arc transition corner part 33 is adapted to the arc abutting surface 51. When the circular arc transition corner part 33 abuts against the arc abutting surface 51, the cover body 2 is opened to the limit position.
[0031] When the cover body 2 is opened by rotating around the hinge point, the swing arm 3 swings around the hinge point, and the circular arc transition corner part 33 gradually approaches the arc abutting surface 51 and finally abuts against the arc abutting surface 51, thereby limiting the position. At this time, the opening angle of the cover body 2 is 75°-85°, which can prevent the opening angle of the cover body 2 from being too large to affect the stability of the printer, and also prevent the opening angle of the cover body 2 from being too small to affect the replacement of the thermal paper.
[0032] The openings of the two mounting holes 11 are opposite to each other, and the two convex shafts 4 are fixed on the sides of the two swing arms 3 close to each other. When the two convex shafts 4 are correspondingly fitted into the mounting holes 11, the swing arms 3 and the casing body 1 are blocked on both sides, so as to limit the two convex shafts 4, prevent the convex shafts 4 from being excessively moved and then coming out of the mounting holes 11, and ensure the stability of the hinged installation of the swing arms 3. Embodiment Two
[0033] Please refer to Figure 5 , the difference between this embodiment and the first embodiment is that:
[0034] The abutment limiting part is a blocking frame 6, which is in U shape and is fixed on the machine shell 1, the swing arm 3 passes through the space formed between the blocking frame 6 and the machine shell 1, the swing arm 3 has an inner recess 34, when the inner recess 34 abuts against the blocking frame 6, the cover 2 is turned to open to the limit position, wherein the space formed between the blocking frame 6 and the machine shell 1 is enough for the swing arm 3 to swing.
[0035] When the cover 2 is turned to open around the hinge point, the swing arm 3 swings around the hinge point, the inner recess 34 moves synchronously and gradually approaches the arc abutment surface 51, finally abuts against the blocking frame 6 to realize limiting, at this time, the opening angle of the cover 2 is 75-85°, which avoids that the opening angle of the cover 2 is too large to affect the stability of the printer, and also avoids that the opening angle of the cover 2 is too small to affect the replacement of the thermal paper.
[0036] It is worth mentioning that the specific structure, model and coefficient index of all components in the utility model are self-contained technology, as long as the beneficial effects can be achieved, implementation can be carried out, therefore, no more elaboration is added.
[0037] The above is the detailed description of the utility model combined with specific embodiments, which cannot be considered as the specific implementation mode of the utility model only limited to these descriptions. For ordinary skilled person in the art to which the utility model belongs, a number of equivalent substitutions or obvious variations can be made without departing from the concept of the utility model, and the performance or use is the same, which should be considered as belonging to the patent protection range determined by the submitted claims of the utility model.
Claims
1. A novel opening structure of a printer, comprising a casing (1) and a cover (2), characterized in that: a pair of swing arms (3) are fixed on the cover (2), and the swing arms (3) are respectively hingedly installed on two sides of the casing (1) to provide the cover (2) with rotation ability; and a blocking limiting piece is arranged on the casing (1), and the blocking limiting piece is in blocking cooperation with the swing arms (3) during the rotation opening of the cover (2) to limit the maximum opening angle of the cover (2).
2. The novel opening structure of the printer according to claim 1, characterized in that: installation holes (11) are respectively arranged on two sides of the casing (1), and protruding shafts (4) are respectively fixed on the swing arms (3); and the protruding shafts (4) are respectively rotationally installed in the installation holes (11) on the corresponding sides.
3. The novel opening structure of the printer according to claim 2, characterized in that: the swing arms (3) are all in J shape; one end of the swing arm (3) is a fixed part (31) and is fixedly connected with the cover (2); and the other end of the swing arm (3) is a hinged part (32), and the protruding shaft (4) is correspondingly fixed at the hinged part (32).
4. The novel opening structure of the printer according to claim 3, characterized in that: the blocking limiting piece is a blocking block (5); the blocking block (5) is fixed on the casing (1) and located on one side of the swing arm (3); the spacing between the surface of the blocking block (5) close to the one side of the swing arm (3) and the swing arm (3) is smaller upward to form an arc-shaped abutting surface (51); the swing arm (3) has a circular arc transition corner part (33), and the circular arc transition corner part (33) has an arc degree matched with the arc-shaped abutting surface (51); and when the circular arc transition corner part (33) abuts against the arc-shaped abutting surface (51), the cover (2) is rotated to the limit position.
5. The novel opening structure of the printer according to claim 3, characterized in that: the blocking limiting piece is a blocking frame (6); the blocking frame (6) is in U shape and is fixed on the casing (1); the swing arm (3) passes through the space between the blocking frame (6) and the casing (1); the swing arm (3) has an inner recess (34); and when the inner recess (34) abuts against the blocking frame (6), the cover (2) is rotated to the limit position.
6. The novel opening structure of the printer according to claim 2, characterized in that: the openings of the installation holes (11) are opposite to each other, and the protruding shafts (4) are respectively fixed on the sides of the swing arms (3) close to each other.