Paper bracket easy to operate

Abstract

The utility model relates to the field of printers, and discloses an easy-to-operate paper bracket, which comprises a fixed plate and sliding slot holes, an upper cover is arranged above the fixed plate, a base is arranged below the upper cover, two groups of sliding slot holes are arranged in the fixed plate along the length direction, racks are inserted into the sliding slot holes, and the upper cover is arranged on the fixed plate. Guide grooves are formed in the two sides of the end face, away from the teeth, of the rack, an elastic arm is arranged between the two guide grooves, and a thin part is arranged on one side of the rack. According to the paper bracket easy to operate, through the design that the rack is provided with a damping guide structure, the integrated rack and the mounting structure of the rack are achieved, the structure is simplified, the rack is reasonably restrained, meanwhile, the necessary damping effect is achieved, mounting is easy, the production efficiency is high, it is not needed to reserve too large mounting holes in the shell during mounting, and the production cost is reduced. Stepless adjustment can be achieved, the device can adapt to various standard and non-standard paper, and the problems that the structure is not stable, and buckle adjustment is not smooth are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to an easy-to-operate paper support. Background Art

[0002] In the field of thermal transfer printing, A4 printers usually need to be equipped with a paper holder. Due to the variety of paper specifications, the paper holder needs to have an adjustable function.

[0003] After searching, the published patent 1 (CN202310641093.5) discloses a printer cover assembly and a printer. In this technical solution, the cover body is provided with at least two snap-fitting positions spaced apart along the paper width direction, or the cover body is provided with a spring buckle that cooperates with the snap-fitting position. The shortcomings of this solution are: 1. When adjusting the limit block, the operator has a poor grasp of the operating force of the buckle, which can easily lead to excessive force, and the feeling of jamming is not easy to grasp; there is a tolerance in the distance between the buckling positions, and there is a tolerance in the paper width, which cannot be well adapted to the width of various specifications of paper; the rebound direction of the buckle is perpendicular to the upper and lower covers, which makes the middle part of the upper and lower covers prone to bulging, plastic deformation or separation; a through hole needs to be reserved in the cover plate to install the rack, and the reserved through hole affects the appearance; the rack lacks constraints, and the end of the rack away from the gear can swing freely. When encountering the resistance of the buckle to the buckle at the buckle position, the rack is prone to deflection or bending; the tray adjustment is also adjusted by buckle positioning, and the extension and retraction of the tray are positioned by the bayonet and the convex. The operating force is not easy to control, and the bayonet and the convex are prone to fatigue and wear failure.

[0004] In the technical solution of the second published patent (CN202022504849.6), the moving plate and the rack need to be separated for installation. When the position of the moving plate is adjusted, the connection between the moving plate and the rack generates a large destructive torque, and the clamping structure at the bottom of the moving plate is easily damaged, resulting in an unstable structure. If it is made into an integrated design, it cannot be installed. The damping structure adopts the method of fitting the damping gear and the friction plate, but this damping structure needs to be pre-tightened with screws, and the tightening force of the screws needs to be adjusted to produce a moderate damping effect, resulting in low production efficiency.

[0005] Therefore, a paper holder that is easy to operate is needed to solve the above technical defects. Utility Model Content

[0006] The utility model aims to provide an easy-to-operate paper holder to solve the problems of unstable structure and jamming of buckle adjustment proposed in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an easy-to-operate paper holder, comprising a fixed plate and a long sliding hole, an upper cover is installed above the fixed plate, a base is installed below the upper cover, two groups of long sliding holes are arranged inside the fixed plate along the length direction, a rack is inserted into the long sliding hole, guide grooves are arranged on both sides of the end surface of the rack away from the teeth, an elastic arm is arranged between the two groups of guide grooves, a detail is arranged on one side of the rack, a paper width limit block is arranged on one side of the detail, a guide rail matching the guide groove is arranged on the edge of the fixed plate at the rack installation position, two groups of racks are installed in the fixed plate, and a central gear is installed between the two groups of racks.

[0008] Preferably, the rack is meshingly connected with the central gear, and the two sets of racks are centrally symmetrical about the axis of the central gear.

[0009] Preferably, a receiving cavity is provided in the middle of the fixed plate, a sliding movable tray is slidably connected in the receiving cavity, two groups of iron sheets are arranged on the movable tray along the X direction, and the movable tray can slide in the Y direction.

[0010] Preferably, a group A of magnets is disposed on an edge of one end of the fixing plate, and a group B of magnets is disposed in the middle of the fixing plate, and the positions of the group A and group B magnets are correspondingly distributed.

[0011] Preferably, the fixing plate is provided with a hand-grip position in the middle of the outer edge in the +Y direction.

[0012] Preferably, two groups of rotating shaft sleeves A are arranged along the X direction on the Y direction edge of the upper cover, the rotating shaft can be installed in the inner hole of the rotating shaft sleeve A, and a rotation limiting surface A is arranged on one end surface of the rotating shaft sleeve A; two groups of rotating shaft sleeves B are arranged on one edge of the base, the rotating shaft can be installed in the inner hole of the rotating shaft sleeve B, and a rotation limiting surface B is arranged on one end surface of the rotating shaft sleeve B.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the easy-to-operate paper tray not only realizes an integrated rack and its mounting structure, but also has a damping guide structure to solve the problem of buckle adjustment jamming, and realizes a smoother feel than the buckle tray, no jamming, and easier operation, but also realizes a simpler mold and lower modification and maintenance costs;

[0014] (1) A rack, a detail, a sliding long hole, a fixed plate, an elastic arm, a guide rail, a guide groove, a central gear, and an upper cover are provided. During installation, the rack passes flatly through the sliding long hole of the fixed plate to the detail position. The detail of the rack rotates along the Z-axis direction at the sliding long hole by degrees, and then rotates along the Y-axis direction by degrees. The guide groove of the rack just matches the guide rail of the fixed plate. The elastic arm presses against one side of the guide rail to apply elastic force to the guide rail. The central gear is installed on a cylinder in the middle of the fixed plate. The racks on both sides are arranged at 180 degrees on both sides of the central gear. When the upper cover is closed with the fixed plate, the rack mechanism is limited. After installation, when adjusting the rack on either side, the paper width on both sides is adjusted. The limit blocks can move away from and approach each other at the same time through the linkage of the central gear. When the rack slides, the guide groove of the rack cooperates with the guide rail to guide, and the elastic arm applies pressure on one side of the guide rail, so that the sliding of the rack is subject to friction resistance, which produces a damping effect. The design of a self-contained damping guide structure realizes an integrated rack and its installation structure, simplifies the structure, and makes the rack reasonably constrained. At the same time, the necessary damping effect is also produced. The installation is simple and the production efficiency is high. There is no need to reserve an overly large installation hole in the shell for installation. It can be adjusted steplessly, and there is no problem of buckle adjustment jamming. It can adapt to a variety of standard and non-standard paper.

[0015] (2) An iron sheet, a movable tray, a group A magnet, and a group B magnet are provided. A receiving cavity is provided in the middle of the fixed plate, and a movable tray is built therein. Two iron sheets are arranged along the X direction on the movable tray, and the movable tray can slide in the Y direction. When the movable tray slides out, the iron sheet reaches the inner side of the group A magnet and is magnetically attracted and positioned; when the movable tray is retracted, the iron sheet reaches the inner side of the group B magnet and is magnetically attracted and positioned. A hand grip is provided in the middle of the outer edge in the +Y direction of the fixed plate to provide operating space for the user. Through the magnetic suction design, when the tray is pulled out or retracted and the stroke is close to the end point, the magnetic suction assists and the tray is adsorbed in place. It is smoother to the touch than a snap-on tray, has no jamming, and is easier to operate.

[0016] (3) A rotating shaft sleeve B, a rotation limit surface B, a rotating shaft sleeve A, and a rotation limit surface A are provided. Two rotating shaft sleeves B are provided on one edge of the base. The inner hole of the rotating shaft sleeve B can be used to install the rotating shaft. A rotation limit surface B is provided on one end surface of the rotating shaft sleeve B. The rotating shaft sleeve A and the rotating shaft sleeve B are just staggered. When the paper holder assembly is opened at an angle of about 120 to 150 degrees, the paper holder is tilted backward, and the rotation limit surface A and the rotation limit surface B collide with each other. Compared with the prior art, the features of the rotation limit surface A and the rotation limit surface B are easy to modify, the cost of modifying the mold is low, the mold is simpler, and the modification and maintenance costs are lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the rack installation structure of the utility model;

[0018] Figure 2This is a front view structural diagram of the rack of the utility model;

[0019] Figure 3 This is a front view structural diagram of the fixing plate of the utility model;

[0020] Figure 4 This is a front view structural diagram of the movable tray of the utility model;

[0021] Figure 5 This is a schematic diagram of the front view structure of the base of the utility model;

[0022] Figure 6 This is a front view structural schematic diagram of the utility model;

[0023] Figure 7 For the utility model Figure 6 A in the middle is a schematic diagram of the enlarged structure viewed from the front.

[0024] In the figure: 1. fixed plate; 2. hand-grip position; 3. sliding long hole; 4. rack; 5. guide groove; 6. elastic arm; 7. detail; 8. paper width limit block; 9. movable tray; 10. guide rail; 11. center gear; 12. iron sheet; 13. upper cover; 14. group A magnets; 15. shaft sleeve A; 16. rotation limit surface A; 17. group B magnets; 18. rotation limit surface B; 19. shaft sleeve B; 20. base. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Please refer to Figure 1-4 , an easy-to-operate paper holder, comprising a fixed plate 1 and a long sliding hole 3, an upper cover 13 is installed above the fixed plate 1, a base 20 is installed below the upper cover 13, two groups of long sliding holes 3 are arranged inside the fixed plate 1 along the length direction, a rack 4 is inserted into the long sliding hole 3, guide grooves 5 are arranged on both sides of the end surface of the rack 4 away from the teeth, an elastic arm 6 is arranged between the two groups of guide grooves 5, a detail 7 is arranged on one side of the rack 4, a paper width limit block 8 is arranged on one side of the detail 7, a guide rail 10 matching the guide groove 5 is arranged on the edge of the fixed plate 1 at the installation position of the rack 4, two groups of racks 4 are installed in the fixed plate 1, a central gear 11 is installed between the two groups of racks 4, the racks 4 are meshed and connected with the central gear 11, and the two groups of racks 4 are centrally symmetrical about the axis of the central gear 11;

[0027] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, during installation, the rack 4 passes through the sliding long hole 3 of the fixed plate 1 to the position of the detail 7 in a flat manner, and the detail 7 of the rack 4 rotates 90° in the sliding long hole 3 along the Z-axis direction, and then rotates 90° along the Y-axis direction. The guide groove 5 of the rack 4 just cooperates with the guide rail 10 of the fixed plate 1, and the elastic arm 6 presses against one side of the guide rail 10 to apply elastic force to the guide rail 10. The central gear 11 is installed on the cylinder in the middle of the fixed plate 1, and the racks 4 on both sides are arranged on both sides of the central gear 11 to form a 180° relationship. When the upper cover 13 covers the fixed plate 1, the rack 4 mechanism is limited. After installation is completed, when adjusting the rack 4 on any side, the paper width limit blocks 8 on both sides can move away from and approach each other at the same time through the linkage of the central gear 11. When the rack 4 slides, the guide groove 5 of the rack 4 cooperates with the guide rail 10 to play a guiding role, and the elastic arm 6 presses against one side of the guide rail 10 to apply pressure, so that the sliding of the rack 4 is subject to friction resistance, resulting in a damping effect.

[0028] Embodiment 2: A receiving cavity is provided in the middle of the fixed plate 1, and a sliding movable tray 9 is slidably connected in the receiving cavity. The movable tray 9 is provided with two groups of iron sheets 12 along the X direction, and the movable tray 9 can slide in the Y direction. A group of magnets 14 are provided at one end edge of the fixed plate 1, and a group of magnets 17 are provided at the middle position of the fixed plate 1. The positions of the group of magnets 14 and the group of magnets 17 are correspondingly distributed, and a hand-holding position 2 is provided in the middle of the outer edge of the fixed plate 1 in the +Y direction;

[0029] Specifically, Figure 3 and Figure 4 As shown, there is a receiving cavity in the middle of the fixed plate 1, in which a movable tray 9 is built. The movable tray 9 has two iron sheets 12 arranged along the X direction, and the movable tray 9 can slide in the Y direction. When the movable tray 9 slides out, the iron sheet 12 reaches the inner side of the A group magnets 14 and is magnetically attracted and positioned; when the movable tray 9 is retracted, the iron sheet 12 reaches the inner side of the B group magnets 17 and is magnetically attracted and positioned. The fixed plate 1 is provided with a hand-holding position 2 in the middle of the outer edge in the +Y direction to provide the user with operating space.

[0030] Embodiment 3: Two sets of rotating shaft sleeves A15 are arranged along the X direction on the Y direction edge of the upper cover 13, the inner hole of the rotating shaft sleeve A15 can be installed with the rotating shaft, and one end surface of the rotating shaft sleeve A15 is provided with a rotation limit surface A16, and two sets of rotating shaft sleeves B19 are arranged on one edge of the base 20, the inner hole of the rotating shaft sleeve B19 can be installed with the rotating shaft, and one end surface of the rotating shaft sleeve B19 is provided with a rotation limit surface B18;

[0031] Specifically, Figure 5 , Figure 6 and Figure 7As shown, two rotating shaft sleeves B19 are provided at one edge of the base 20, the inner hole of the rotating shaft sleeve B19 can be used to install the rotating shaft, and a rotation limit surface B18 is provided at one end surface of the rotating shaft sleeve B19; the rotating shaft sleeve A15 and the rotating shaft sleeve B19 are just staggered. When the paper holder assembly is opened at an angle of about 120 to 150 degrees, the paper holder is in a state of tilting backward, and the rotation limit surface A16 collides with the rotation limit surface B18.

[0032] Working principle: During installation, the rack 4 passes flatly through the sliding long hole 3 of the fixed plate 1 to the position of the detail 7. The detail 7 of the rack 4 rotates 90° along the Z-axis direction in the sliding long hole 3, and then rotates 90° along the Y-axis direction. The guide groove 5 of the rack 4 just matches the guide rail 10 of the fixed plate 1. The elastic arm 6 presses against one side of the guide rail 10 to apply elastic force to the guide rail 10. The central gear 11 is installed on the cylinder in the middle of the fixed plate 1. The racks 4 on both sides are set at 180° on both sides of the central gear 11. When the upper cover 13 is covered with the fixed plate 1, the rack 4 mechanism is limited. After installation, when adjusting the rack 4 on any side, the paper width limit blocks 8 on both sides can be simultaneously mutually linked through the linkage of the central gear 11. Moving away and approaching, when the rack 4 slides, the guide groove 5 of the rack 4 cooperates with the guide rail 10 to play a guiding role, and the elastic arm 6 presses against one side of the guide rail 10 to apply pressure, so that the sliding of the rack 4 is subject to friction resistance, resulting in a damping effect. There is a receiving cavity in the middle of the fixed plate 1, with a movable tray 9 built in. The movable tray 9 has two iron sheets 12 arranged along the X direction, and the movable tray 9 can slide in the Y direction. When the movable tray 9 slides out, the iron sheet 12 reaches the inner side of the group A magnet 14 and is magnetically attracted and positioned; when the movable tray 9 is retracted, the iron sheet 12 reaches the inner side of the group B magnet 17 and is magnetically attracted and positioned. The fixed plate 1 is provided with a hand-holding position 2 in the middle of the outer edge in the +Y direction to provide the user with operating space.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An easy-to-operate paper holder, comprising a fixed plate (1) and a sliding slot (3), characterized in that: An upper cover (13) is installed above the fixed plate (1), and a base (20) is installed below the upper cover (13). Two groups of sliding long holes (3) are arranged inside the fixed plate (1) along the length direction, and a rack (4) is inserted into the sliding long hole (3). Guide grooves (5) are arranged on both sides of the end surface of the rack (4) away from the teeth, and an elastic arm (6) is arranged between the two groups of guide grooves (5). A detail (7) is arranged on one side of the rack (4), and a paper width limit block (8) is arranged on one side of the detail (7). A guide rail (10) matching the guide groove (5) is arranged on the edge of the fixed plate (1) at the installation position of the rack (4). Two groups of racks (4) are installed in the fixed plate (1), and a central gear (11) is installed between the two groups of racks (4).

2. The easy-to-operate paper holder according to claim 1, characterized in that: The racks (4) are meshingly connected with the central gear (11), and the two sets of racks (4) are centrally symmetrical structures about the axis of the central gear (11).

3. The easy-to-operate paper holder according to claim 1, characterized in that: A receiving cavity is provided in the middle of the fixed plate (1), and a sliding movable tray (9) is slidably connected in the receiving cavity. The movable tray (9) has two groups of iron sheets (12) arranged along the X direction, and the movable tray (9) can slide in the Y direction.

4. The easy-to-operate paper holder according to claim 1, characterized in that: An A group of magnets (14) is arranged at the edge of one end of the fixing plate (1), and a B group of magnets (17) is arranged in the middle of the fixing plate (1), and the A group of magnets (14) and the B group of magnets (17) are arranged in corresponding positions.

5. The easy-to-operate paper holder according to claim 1, characterized in that: The fixing plate (1) is provided with a hand-gripping position (2) in the middle of the outer edge in the +Y direction.

6. The easy-to-operate paper holder according to claim 1, characterized in that: The upper cover (13) is provided with two sets of rotating shaft sleeves A (15) along the X direction on the Y direction edge, the rotating shaft sleeve A (15) inner hole can be installed with the rotating shaft, and one end surface of the rotating shaft sleeve A (15) is provided with a rotation limiting surface A (16), and the base (20) is provided with two sets of rotating shaft sleeves B (19) on one edge, the rotating shaft sleeve B (19) inner hole can be installed with the rotating shaft, and one end surface of the rotating shaft sleeve B (19) is provided with a rotation limiting surface B (18).

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