A paper hopper cover mounting structure and a printer

Abstract

The utility model discloses a paper bin cover mounting structure and printer, paper bin cover mounting structure includes installation shell, bin cover and elastic rotating arm, and installation shell has paper bin cavity, and installation shell both sides all are provided with the installation hole that communicates with paper bin cavity, and installation shell both sides still are provided with the guide slot, and elastic rotating arm has two and sets up in bin cover both sides, and the installation shaft and guide shaft are provided on elastic rotating arm, and installation shaft at least partial stretches into to installation hole, and guide shaft at least partial stretches into to guide slot. The utility model discloses through setting installation hole and guide slot of installation shell both sides, and the installation shaft and guide shaft on elastic rotating arm of bin cover both sides, utilize the elastic deformation of elastic rotating arm to make installation shaft easy to pack into installation hole, and realize the stable direction of bin cover rotation through the cooperation of guide shaft and guide slot, overcomes the traditional pin shaft and the problem of spring mounting mode in compact space alignment difficult, easy to bounce, significantly simplifies the installation process, and improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a paper tray cover mounting structure and a printer. Background Technology

[0002] In printers, the paper tray cover is a key component, primarily used to seal and limit the paper roll within the paper tray, ensuring a stable paper supply during printing and preventing paper shifting or loosening. Traditional paper tray cover installation typically relies on a pin and spring mechanism. The pin hinges the cover to the printer housing, while the spring provides elasticity for opening, closing, and locking. This installation method was common in early printer designs, offering a relatively simple structure that met basic functional requirements. However, as printers have become increasingly smaller and more compact, internal space has become increasingly limited, posing significant challenges to the installation of the pin and spring. Within the limited installation space, operators struggle to accurately align the pin, and the spring's elasticity can cause bouncing or shifting during assembly, increasing installation difficulty and requiring repeated adjustments to ensure proper placement. This inconvenience directly prolongs assembly time, increases labor costs, and reduces overall production efficiency, especially in large-scale manufacturing scenarios, becoming a bottleneck restricting printer assembly efficiency. Therefore, we provide a paper tray cover installation structure and printer to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a paper tray cover mounting structure and a printer.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A paper tray cover mounting structure, comprising:

[0006] The mounting shell has a paper compartment cavity, and mounting holes communicating with the paper compartment cavity are provided on both sides of the mounting shell. Guide grooves are also provided on both sides of the mounting shell.

[0007] A cover is provided at the location of the paper compartment cavity;

[0008] Two elastic rotating arms are provided on both sides of the compartment cover. Each elastic rotating arm is provided with a mounting shaft and a guide shaft. The mounting shaft extends at least partially into the mounting hole, and the guide shaft extends at least partially into the guide groove.

[0009] Preferably, the distance between the mounting shaft and the guide shaft is X, and the guide groove is an arc-shaped elongated groove with the mounting hole as the center and X as the radius.

[0010] Preferably, the mounting shell includes a housing and flanges, with flanges provided on the top of both sides of the housing, the flanges extending away from the paper compartment cavity, and the flanges having through holes.

[0011] Preferably, both sides of the housing are provided with clearance grooves, and the clearance grooves and the mounting holes form a retaining ring.

[0012] Preferably, the through hole includes a first clearance hole and a second clearance hole that pass through the flange. The first clearance hole and the second clearance hole are connected and transition to form an inclined guide surface. The width of the first clearance hole is W1, the thickness of the elastic rotating arm is T, and the width of the second clearance hole is W2, satisfying W1 > W2 > T.

[0013] Preferably, the axis of the mounting shaft is parallel to the axis of the guide shaft, the length of the mounting shaft along its axis is L1, and the length of the guide shaft along its axis is L2, satisfying L1 > L2.

[0014] Preferably, the elastic rotating arm includes a connecting arm connected to the compartment cover, and an mounting arm is obliquely provided at the end of the connecting arm away from the compartment cover. The mounting shaft and the guide shaft are both provided on the side of the mounting arm facing the paper compartment cavity.

[0015] Preferably, the included angle between the connecting arm and the mounting arm is α, satisfying 30°≤α≤90°.

[0016] This application also provides a printer, including:

[0017] The paper tray cover mounting structure described in any one of the above descriptions;

[0018] A bottom shell, which is installed at the bottom of the mounting shell.

[0019] This utility model has the following advantages:

[0020] 1. This utility model, by setting mounting holes and guide grooves on both sides of the mounting shell, and mounting shafts and guide shafts on the elastic rotating arms on both sides of the bin cover, utilizes the elastic deformation of the elastic rotating arms to make it easy for the mounting shafts to be installed into the mounting holes, and achieves stable guidance when the bin cover rotates through the cooperation of the guide shafts and guide grooves. This overcomes the problems of difficult alignment and easy bouncing in a compact space caused by the traditional pin and coil spring installation method, significantly simplifies the installation process, improves assembly efficiency, reduces labor costs, and ensures the stability and reliability of the paper bin cover during the opening and closing process.

[0021] 2. This utility model sets the guide groove as an arc-shaped elongated circular groove with the mounting hole as the center and the distance X between the mounting shaft and the guide shaft as the radius, so that the guide shaft can move smoothly along the arc trajectory when the bin cover rotates, matching the rotational movement of the bin cover and the elastic rotating arm, thereby providing a stable guiding effect and ensuring that the bin cover moves smoothly and reliably during the opening and closing process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation shell and cover of this utility model under an explosion state.

[0023] Figure 2 This is a structural diagram of the mounting shell and the cover of this utility model in their assembled state.

[0024] Figure 3 This is a first-view structural diagram of the mounting shell of this utility model.

[0025] Figure 4 This is a second-view structural diagram of the mounting shell of this utility model.

[0026] Figure 5 This is a side view of the mounting shell structure of this utility model.

[0027] Figure 6 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0028] Figure 7 This is a top view of the mounting shell structure of this utility model.

[0029] Figure 8 This is a front view structural diagram of the bin cover of this utility model.

[0030] Figure 9 This is a cross-sectional view of the bin cover of this utility model.

[0031] Figure 10 This is a schematic diagram of the printer lid closing process of this utility model.

[0032] In the figure, 100 is the mounting shell; 1001 is the paper compartment cavity; 101 is the mounting hole; 102 is the guide groove; 110 is the housing; 111 is the clearance groove; 120 is the flange; 121 is the through hole; 1211 is the first clearance hole; 1212 is the second clearance hole; 1213 is the inclined guide surface; 130 is the retaining ring; 200 is the compartment cover; 300 is the elastic rotating arm; 301 is the mounting shaft; 302 is the guide shaft; 310 is the connecting arm; 320 is the mounting arm; and 400 is the bottom shell. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 1 — Figure 10 The example shown.

[0036] This embodiment discloses a paper tray cover mounting structure, which includes a mounting shell 100, a tray cover 200, and elastic rotating arms 300. The mounting shell 100 has a paper tray cavity 1001. Mounting holes 101 communicating with the paper tray cavity 1001 are provided on both sides of the mounting shell 100. Guide grooves 102 are also provided on both sides of the mounting shell 100. The tray cover 200 is located at the position of the paper tray cavity 1001. There are two elastic rotating arms 300, which are provided on both sides of the tray cover 200. A mounting shaft 301 and a guide shaft 302 are provided on the elastic rotating arms 300. The mounting shaft 301 extends at least partially into the mounting hole 101, and the guide shaft 302 extends at least partially into the guide groove 102.

[0037] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 8As shown, in order to allow the cover 200 to be quickly installed onto the mounting housing 100, mounting holes 101 are provided on both sides of the mounting housing 100, and elastic rotating arms 300 with a certain degree of elasticity are provided on both sides of the cover 200. Mounting shafts 301 are provided on the surfaces of the two elastic rotating arms 300 facing each other. It can be understood that since the distance between the ends of the two mounting shafts 301 that are close to each other is slightly smaller than the width of the mounting housing 100, it is necessary to apply external force to the two elastic rotating arms 300 in a direction away from each other during installation. Force is applied to cause a certain deformation, so that the distance between the two mounting shafts 301 is equal to or greater than the width of the mounting shell 100, thereby moving the mounting shafts 301 to the position of the mounting hole 101. Then, under the action of the elastic rotating arm 300's rebound force, the mounting shafts 301 extend into the mounting hole 101. At this time, the mounting shafts 301 and the mounting hole 101 are in hole-shaft fit, thereby completing the installation of the cover 200 onto the mounting shell 100. When the cover 200 is closed and opened, the cover 200 rotates around the mounting hole 101 as the center.

[0038] It is understandable that, in order to ensure the connection strength between the elastic rotating arm 300 and the bin cover 200, in this embodiment, the elastic rotating arm 300, the mounting shaft 301 and the bin cover 200 are integrally injection molded, thereby preventing breakage during deformation when an external force is applied to the elastic rotating arm 300 due to insufficient strength.

[0039] Please continue reading. Figure 1 , Figure 4 as well as Figure 5 As shown, in order to make the cover 200 more stable during rotation, guide grooves 102 are provided on both sides of the mounting shell 100. Correspondingly, guide shafts 302 are provided on the sides of the elastic rotating arms 300 that are close to each other. It can be understood that when the mounting shaft 301 is installed into the mounting hole 101, the guide shaft 302 will also enter the guide groove 102 simultaneously. Thus, during the rotation of the cover 200, the guide shaft 302 will move along the trajectory of the guide groove 102. In this way, the guide shaft 302 and the guide groove 102 cooperate to guide the cover 200 during the flipping process, making the cover 200 more stable during opening and closing.

[0040] In some embodiments, the distance between the mounting shaft 301 and the guide shaft 302 is X, and the guide groove 102 is an arc-shaped elongated groove centered on the mounting hole 101 and with a radius of X.

[0041] Please see Figure 5 and Figure 9As shown, it can be understood that since the entire cover 200 and the elastic rotating arm 300 rotate around the mounting shaft 301, and the guide shaft 302 is located on one side of the mounting shaft 301, the trajectory of the guide shaft 302 rotating due to the rotation of the cover 200 and the elastic rotating arm 300 is an arc shape. Therefore, in order to make the rotation trajectory of the guide shaft 302 match the rotation of the cover 200 and the elastic rotating arm 300, the guide groove 102 is an arc-shaped elongated oval groove, and the radius of the arc-shaped elongated oval groove is the distance X between the mounting shaft 301 and the guide shaft 302. That is, the guide groove 102 is an arc-shaped elongated oval groove with the mounting hole 101 as the center and the distance between the mounting shaft 301 and the guide shaft 302 as the radius.

[0042] In some embodiments, the mounting housing 100 includes a housing 110 and a flange 120. The top of both sides of the housing 110 are provided with flanges 120. The flanges 120 extend in a direction away from the paper compartment cavity 1001. The flanges 120 have through holes 121 extending through them.

[0043] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, in order to smoothly install the mounting shaft 301 of the elastic rotating arm 300 into the mounting hole 101, a through hole 121 needs to be opened on the flange 120 for clearance, so that the elastic rotating arm 300 can smoothly pass through the through hole 121 and drive the mounting shaft 301 to the position of the mounting hole 101, thereby allowing the mounting shaft 301 to be installed into the mounting hole 101. At the same time, the guide shaft 302 can also be inserted into the guide groove 102 to realize the installation of the guide shaft 302.

[0044] In some embodiments, clearance grooves 111 are provided on both sides of the housing 110, and a retaining ring 130 is formed between the clearance grooves 111 and the mounting hole 101.

[0045] Please see Figure 5 and Figure 6 As shown, in order to reduce the deformation caused by the elastic rotating arm 300 under external force during installation, clearance grooves 111 are opened on both sides of the housing 110 facing the mounting hole 101. However, the clearance grooves 111 are not connected to the mounting hole 101, thus forming a retaining ring 130 between the clearance grooves 111 and the mounting hole 101. It can be understood that the retaining ring 130 can block the mounting shaft 301 installed in the mounting hole 101, preventing the mounting shaft 301 from dislodging from the mounting hole 101 due to the deformation of the elastic rotating arm 300 under force.

[0046] It is understandable that, since the clearance groove 111 is recessed on the side of the housing 110, the mounting shaft (301) can move along the path of the clearance groove (111) to the mounting hole (101) during the installation process. The elastic rotating arm 300 only needs to be stressed when it passes the retaining ring 130, which reduces the risk of the elastic rotating arm 300 breaking.

[0047] In some embodiments, the through hole 121 includes a first clearance hole 1211 and a second clearance hole 1212 that pass through the flange 120. The first clearance hole 1211 and the second clearance hole 1212 are connected and transition to form an inclined guide surface 1213. The width of the first clearance hole 1211 is W1, the thickness of the elastic rotating arm 300 is T, and the width of the second clearance hole 1212 is W2, satisfying W1 > W2 > T.

[0048] Please see Figure 7 As shown, in order for the elastic rotating arm 300 to pass smoothly through the through hole 121, the through hole 121 is composed of a first clearance hole 1211 and a second clearance hole 1212. The width of the first clearance hole 1211 is greater than the width of the second clearance hole 1212, and the width of the second clearance hole 1212 is greater than the thickness of the elastic rotating arm 300. The first clearance hole 1211 and the second clearance hole 1212 are connected by a sloping guide surface 1213, so that the elastic rotating arm 300 can pass smoothly through the through hole 121. To a certain extent, the narrower second clearance hole 1212 can limit the position of the elastic rotating arm 300, preventing the elastic rotating arm 300 from deforming under force, causing the mounting shaft 301 to disengage from the mounting hole 101 and the guide shaft 302 to disengage from the guide groove 102.

[0049] In some embodiments, the axis of the mounting shaft 301 is arranged parallel to the axis of the guide shaft 302, the length of the mounting shaft 301 along its axis is L1, and the length of the guide shaft 302 along its axis is L2, satisfying L1 > L2.

[0050] Please see Figure 8 As shown, in order to further reduce the degree of deformation of the elastic rotating arm 300 under force during the installation of the mounting shaft 301 to the mounting hole 101, the length of the guide shaft 302 can be made smaller than the length of the mounting shaft 301. In addition, a clearance groove 111 is opened on the side of the housing 110, thereby minimizing the deformation of the elastic rotating arm 300 during the installation of the mounting shaft 301 and reducing the risk of breakage of the elastic rotating arm 300.

[0051] In some embodiments, the elastic rotating arm 300 includes a connecting arm 310 connected to the compartment cover 200. The end of the connecting arm 310 facing away from the compartment cover 200 is provided with an inclined mounting arm 320. The mounting shaft 301 and the guide shaft 302 are both provided on the side of the mounting arm 320 facing the paper compartment cavity 1001.

[0052] Please see Figure 9 As shown, in order to prevent the connecting arm 310 from colliding with the side wall of the through hole 121 when it rotates about the mounting shaft 301, a mounting arm 320 is inclinedly provided at the end of the connecting arm 310 away from the cover 200, and the mounting shaft 301 and the guide shaft 302 are provided on the mounting arm 320. This allows the inclined mounting arm 320 to avoid the side wall of the through hole 121 during the rotation of the cover 200, thus preventing a collision.

[0053] In some embodiments, the included angle between the connecting arm 310 and the mounting arm 320 is α, which satisfies 30°≤α≤90°.

[0054] To prevent the mounting shaft 301 from falling off after being dislodged from the mounting hole 101 due to force on the elastic rotating arm 300, the connecting arm 310 and the mounting arm 320 are tilted so that the mounting arm 320 can be hung on the side wall of the through hole 121, thus preventing it from falling off. The angle formed between the connecting arm 310 and the mounting arm 320 can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85° and 90°, etc. In practice, different angles can be selected as needed, and the specific angle is not limited here.

[0055] This embodiment also provides a printer, which includes the paper tray cover mounting structure of any of the above and a bottom shell 400. The bottom shell 400 is mounted on the bottom of the mounting shell 100. In this embodiment, the housing formed by the bottom shell 400 and the mounting shell 100 should also be equipped with corresponding power supply, control board and other components to realize the printing function.

[0056] The working process of this utility model is as follows: During installation, the elastic rotating arms 300 on both sides of the cover 200 are pried apart in opposite directions, causing them to undergo elastic deformation, thereby increasing the distance between the mounting shafts 301 until the mounting shafts 301 are aligned with the mounting holes 101 on both sides of the mounting housing 100; under the action of the elastic rotating arms 300, part of the mounting shafts 301 extends into the mounting holes 101, forming a hole-shaft fit, while part of the guide shafts 302 extends into the guide grooves 102, completing the installation of the cover 200; when the cover 200 is opened and closed, it rotates around the mounting shafts 301 as the rotation center, and the guide shafts 302 move along the arc trajectory of the guide grooves 102, providing stable guidance; wherein, the clearance grooves 111 on the mounting housing 100 help to reduce the deformation of the elastic rotating arms 300 during installation, and the retaining rings 130 formed between the clearance grooves 111 on the mounting housing 100 and the mounting holes 101 prevent the mounting shafts 301 from disengaging from the mounting holes 101.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A paper tray cover mounting structure, characterized in that, include: Mounting housing (100), the mounting housing (100) has a paper storage cavity (1001), and mounting holes (101) communicating with the paper storage cavity (1001) are provided on both sides of the mounting housing (100). Guide grooves (102) are also provided on both sides of the mounting housing (100). A cover (200) is disposed at the location of the paper storage cavity (1001); Two elastic rotating arms (300) are provided on both sides of the compartment cover (200). The elastic rotating arms (300) are provided with a mounting shaft (301) and a guide shaft (302). The mounting shaft (301) extends at least partially into the mounting hole (101), and the guide shaft (302) extends at least partially into the guide groove (102).

2. The paper tray cover installation structure according to claim 1, characterized in that: The distance between the mounting shaft (301) and the guide shaft (302) is X, and the guide groove (102) is an arc-shaped elongated groove with the mounting hole (101) as the center and X as the radius.

3. The paper tray cover installation structure according to claim 1, characterized in that: The mounting housing (100) includes a housing (110) and a flange (120). The flange (120) is provided on the top of both sides of the housing (110). The flange (120) extends in a direction away from the paper compartment cavity (1001). The flange (120) has a through hole (121) that passes through it.

4. The paper tray cover installation structure according to claim 3, characterized in that: Both sides of the housing (110) are provided with clearance grooves (111), and a retaining ring (130) is formed between the clearance grooves (111) and the mounting hole (101).

5. The paper tray cover installation structure according to claim 3, characterized in that: The through hole (121) includes a first clearance hole (1211) and a second clearance hole (1212) that pass through the flange (120). The first clearance hole (1211) and the second clearance hole (1212) are connected and transition to form an inclined guide surface (1213). The width of the first clearance hole (1211) is W1, the thickness of the elastic rotating arm (300) is T, and the width of the second clearance hole (1212) is W2, satisfying W1 > W2 > T.

6. The paper tray cover installation structure according to claim 1, characterized in that: The axis of the mounting shaft (301) is parallel to the axis of the guide shaft (302). The length of the mounting shaft (301) along its axis is L1, and the length of the guide shaft (302) along its axis is L2, satisfying L1 > L2.

7. The paper tray cover installation structure according to claim 1, characterized in that: The elastic rotating arm (300) includes a connecting arm (310) connected to the compartment cover (200). The end of the connecting arm (310) facing away from the compartment cover (200) is provided with an inclined mounting arm (320). The mounting shaft (301) and the guide shaft (302) are both provided on the side of the mounting arm (320) facing the paper compartment cavity (1001).

8. The paper tray cover installation structure according to claim 7, characterized in that: The included angle between the connecting arm (310) and the mounting arm (320) is α, which satisfies 30°≤α≤90°.

9. A printer, characterized in that, include: Paper tray cover mounting structure as described in any one of claims 1 to 8; A bottom shell (400) is mounted on the bottom of the mounting shell (100).

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