Structure for preventing inner cover on printer from being turned over and falling off

Abstract

The utility model relates to a structure for preventing an upper inner cover of a printer from turning open and falling off, which comprises an upper inner cover, a lower inner cover and a base, a turning cover leg is convexly formed at the rear end of the lower part of the upper inner cover, and the upper inner cover is rotatably connected with the lower inner cover through the lower inner cover, so that the upper inner cover can adaptively cover the upper part of the lower inner cover in a matched manner and can turn over; the lower inner cover is fixed to the base, a limiting mechanism is arranged on the inner wall of the base, and the limiting mechanism is in limiting fit with the flip leg, so that the upper inner cover is always attached to the inner side face of the flip leg when turned over. A limiting mechanism is arranged on the upper inner cover and the lower inner cover through rotating fit of positioning of a positioning shaft and a positioning hole in a turning cover leg, and the turning cover leg is inserted and positioned between a rib position and the inner wall of the base for limiting, so that when the upper inner cover is opened in place and then abnormal force is applied, the inner side face of the turning cover leg is always attached to the outer side face of the rib position; the positioning hole can be prevented from being separated from the positioning shaft after the flip leg deforms, and the phenomenon that the upper inner cover falls off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a structure for preventing an inner cover on a printer from being opened and falling off. Background Art

[0002] Traditional thermal printers have holes and shafts on the upper and lower covers to achieve a rotational connection. Since the shaft and hole are made of plastic, they will produce slight elastic deformation due to force when the cover is flipped. If abnormal force is applied, the hole will be separated from the shaft and the upper cover will fall off, causing great inconvenience to use. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a structure to prevent the upper inner cover of the printer from flipping open and falling off, comprising an upper inner cover, a lower inner cover and a base, the rear end of the lower part of the upper inner cover is convexly formed with a flip leg, the upper inner cover is rotatably connected to the lower inner cover through the lower inner cover, so that the upper inner cover can be adaptively covered and matched with the upper part of the lower inner cover and can be flipped, the lower inner cover is fixed on the base, and a limiting mechanism is provided on the inner wall of the base, the limiting mechanism and the flip leg are limitedly matched, so that the upper inner cover always fits the inner side of the flip leg when flipping.

[0004] A further implementation scheme of the utility model is that a positioning hole is provided on the flip cover leg, a positioning shaft is provided on the lower inner cover, and the upper inner cover passes through the flip cover leg and the positioning hole and is plugged into and matched with the positioning shaft, so that the upper inner cover and the lower inner cover can rotate along the axis of the positioning shaft.

[0005] A further implementation scheme of the utility model is that the flip cover leg is hook-shaped and includes a limiting portion. When the upper inner cover is opened to the right position, the limiting portion abuts against the upper edge of the rear portion of the base.

[0006] A further implementation scheme of the utility model is that the lower inner cover is provided with a screw hole, and the lower inner cover is fixed to the base after the screw passes through the screw hole.

[0007] A further implementation scheme of the utility model is that a semicircular convex point is formed at the bottom end of the flip cover leg, and a clearance hole is opened on the lower inner cover. The flip cover leg passes through the clearance hole. When the upper inner cover is opened into place, the convex point abuts against the upper edge of the clearance hole to support and position the upper inner cover.

[0008] A further implementation scheme of the utility model is that the limiting mechanism is a rib formed on the inner wall of the rear end of the base, and the outer side surface of the rib and the inner side surface of the flip cover are in close contact and limited cooperation.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The upper inner cover and the lower inner cover are respectively positioned by rotationally cooperating with the positioning holes on the flip cover legs and the positioning shafts. The lower inner cover is fixed on the base, and a limiting mechanism is provided. The limiting mechanism is a rib provided on the inner wall at the rear end of the base. The flip cover legs are inserted and positioned between the ribs and the inner wall of the base for limiting. When an abnormal force is applied to the upper inner cover after it is opened into place, the inner side surface of the flip cover legs always fits the outer side surface of the ribs, which can limit the positioning holes from being separated from the positioning shaft after the flip cover legs are deformed, thereby avoiding the upper inner cover from falling off.

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the upper inner cover of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the lower inner cover of the utility model;

[0014] Figure 3 This is a schematic diagram of the assembly structure of the upper inner cover and the lower inner cover of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the base of the utility model;

[0016] Figure 5 It is a schematic diagram of the structure of the upper inner cover when it is fully opened;

[0017] Figure 6 It is a cross-sectional view of the upper inner cover when it is fully opened. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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 should not be understood as a limitation on the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 3 The embodiment of the utility model provides a structure for preventing an upper inner cover of a printer from opening and falling off, comprising an upper inner cover 1, a lower inner cover 2 and a base 3.

[0023] Among them, Figure 1 The rear end of the lower part of the upper inner cover 1 is convexly formed with a flip cover leg 10, and the upper inner cover 1 is rotatably connected with the lower inner cover 2, so that the upper inner cover 1 can be adaptively covered and matched with the upper part of the lower inner cover 2 and can be flipped, such as Figure 2 The lower inner cover 2 is provided with an air avoidance hole 20 , and the flip cover leg 10 on the upper inner cover 1 passes through the air avoidance hole 20 .

[0024] In this embodiment, the flip cover leg 10 is preferably hook-shaped, and a positioning hole 11 is opened on the flip cover leg 10. Figure 2 A positioning shaft 21 is provided on the lower inner cover 2, and the upper inner cover 1 passes through the positioning hole 11 of the lower inner cover 2 through the flip cover leg 10 and is plugged into the positioning shaft 21, so that the upper inner cover 1 and the lower inner cover 2 can rotate along the axis of the positioning shaft 21. When an abnormal force is applied to the upper inner cover 1, that is, when it continues to flip up after being opened to the full extent, the flip cover leg 10 will undergo a slight elastic deformation.

[0025] Secondly, the lower inner cover 2 is fixed on the base 3. The lower inner cover 2 is provided with screw holes 22. The lower inner cover 2 is fixed to the base 3 by screws passing through the screw holes 22.

[0026] And, if Figure 1The flip cover leg 10 also includes a limiting portion 12. When the upper inner cover 1 is opened to the full position, the limiting portion 12 abuts against the upper edge of the rear portion of the base 3, that is, the full position state of the upper inner cover 1 when opened, and it is no longer opened at this time.

[0027] Furthermore, a semicircular protrusion 13 is formed at the bottom end of the flip cover leg 10, and the flip cover leg 10 passes through the air avoidance hole 20. When the upper inner cover 1 is opened into place, the protrusion 13 abuts against the upper edge of the air avoidance hole 20 to support and position the upper inner cover 1, and the upper inner cover 1 will not flip down automatically. After the upper inner cover 1 is flipped down in the opposite direction, the protrusion 13 breaks away from the upper edge of the air avoidance hole 20 and enters the interior of the air avoidance hole 20 due to a slight deformation of the flip cover leg 10, thereby achieving the flip-down closure of the upper inner cover 1.

[0028] In order to prevent the upper inner cover 1 from being separated from the lower inner cover 2 after being subjected to abnormal force, a limiting mechanism is provided on the inner wall of the base 3, and the limiting mechanism cooperates with the flip cover leg 10 to ensure that the upper inner cover 1 always fits the inner side of the flip cover leg 10 when flipping. Figure 5 The limiting mechanism is a rib 30 formed on the inner wall of the rear end of the base 3. The outer side surface of the rib 30 and the inner side surface of the flip leg 10 are fitted together and limited. That is, the flip leg 10 is inserted and positioned between the rib 30 and the inner wall of the base 3 for limiting. When an abnormal force is applied to the upper inner cover 1 after it is opened to the full extent, the inner side surface of the flip leg 10 always fits the outer side surface of the rib 30, which can limit the positioning hole 11 from being separated from the positioning shaft 21 after the flip leg 10 is deformed, thereby avoiding the phenomenon of the upper inner cover 1 falling off.

[0029] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A structure for preventing the inner cover of a printer from opening and falling off, characterized in that: The utility model comprises an upper inner cover, a lower inner cover and a base, wherein a flip-cover leg is convexly formed on the rear end of the lower part of the upper inner cover, and the upper inner cover is rotatably connected with the lower inner cover through the lower inner cover, so that the upper inner cover can be adaptively covered and matched with the upper part of the lower inner cover and can be flipped, and the lower inner cover is fixed on the base, and a limiting mechanism is provided on the inner wall of the base, and the limiting mechanism is limitedly matched with the flip-cover leg, so that the upper inner cover always fits the inner side of the flip-cover leg when flipping.

2. A structure for preventing the upper inner cover of a printer from opening and falling off according to claim 1, characterized in that: The flip cover leg is provided with a positioning hole, the lower inner cover is provided with a positioning shaft, and the upper inner cover passes through the flip cover leg through the positioning hole of the lower inner cover and is plugged into and matched with the positioning shaft, so that the upper inner cover and the lower inner cover can rotate along the axis of the positioning shaft.

3. The structure for preventing the upper inner cover of a printer from opening and falling off according to claim 1, characterized in that: The flip cover leg is hook-shaped and includes a limiting portion. When the upper inner cover is opened to the right position, the limiting portion abuts against the upper edge of the rear portion of the base.

4. The structure for preventing the upper inner cover of a printer from opening and falling off according to claim 1, characterized in that: The lower inner cover is provided with screw holes, and the lower inner cover is fixed to the base after screws pass through the screw holes.

5. The structure for preventing the upper inner cover of a printer from opening and falling off according to claim 1, characterized in that: A semicircular convex point is formed at the bottom end of the flip cover leg, and an air avoidance hole is opened on the lower inner cover. The flip cover leg passes through the air avoidance hole. When the upper inner cover is opened to the right position, the convex point abuts against the upper edge of the air avoidance hole to support and position the upper inner cover.

6. The structure for preventing the upper inner cover of a printer from opening and falling off according to claim 1, characterized in that: The limiting mechanism is a rib formed on the inner wall of the rear end of the base, and the outer side surface of the rib and the inner side surface of the flip cover are in contact and limited cooperation.

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