CN216761259U

CN216761259U - Rotary connecting structure for printer

Info

Publication number: CN216761259U
Application number: CN202123176746.2U
Authority: CN
Inventors: 南国梁; 查洪胜; 李大鹏
Original assignee: Ningbo Deli Kebei Technology Co Ltd
Current assignee: Ningbo Deli Kebei Technology Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-06-17
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to a rotary connecting structure for a printer, which comprises a base and a cover plate, wherein the cover plate is rotatably connected to the base; the base is provided with at least two first connecting parts arranged at intervals in the length direction, each first connecting part is provided with a shaft hole positioned on the same straight line, the cover plate is provided with a second connecting part corresponding to each first connecting part, each second connecting part is provided with a rotating shaft capable of being inserted into the shaft hole corresponding to the second connecting part, the base is further provided with a joint curved surface capable of being in sliding contact with the second connecting part at least at the position adjacent to one of the second connecting parts, the joint curved surface is provided with an arc-shaped limiting groove with the extending direction consistent with the rotating direction of the rotating shaft, at least one second connecting part is provided with a convex block protruding towards the joint curved surface, and the convex block can be slidably constrained in the arc-shaped limiting groove in the state that the rotating shaft is inserted into the shaft hole corresponding to the rotating shaft. Its structural design of this rotation connection structure is reasonable, and is difficult to have the risk of droing.

Description

Rotary connecting structure for printer

Technical Field

The utility model relates to the technical field of printers, in particular to a rotary connecting structure for a printer.

Background

The rotation connection structure of base and convertible apron is designed more to current printer structure. The current connection structure that rotates generally is the card income formula, leans on interference fit card to go into the pivot, and chinese utility model patent like application number CN202021828474.2 discloses a thermal printer of hidden wiring of lid, including lid, frame, the lid articulates in the frame, and the lid includes apron and articulated arm, and the articulated arm is connected on the interior terminal surface of apron, and the articulated arm stretches into in the frame and articulates with the frame.

The rotation connection structure that the printer in the above-mentioned patent adopted still has certain not enough, and this rotation connection structure generally needs the limit stop who corresponds to prescribe a limit to its turned angle, if rotation angle is little or great, the step height can be very high, and the structure is complicated relatively to, control and rock easily, when the user is too big hard, there is the risk of droing easily. On the other hand, the rotary connecting structure is inconvenient to disassemble and assemble, and corresponding disassembling and assembling tools are often needed to disassemble and assemble, so that the assembling cost is relatively high in the production process.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a rotary connection structure for a printer, which has a reasonable structural design and is not easy to have a falling risk, in view of the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide a rotatable connection structure for a printer, which is convenient to disassemble and assemble, in view of the current situation of the prior art.

The technical solution adopted by the present invention to solve any one of the first technical problem and the second technical problem is: the rotary connecting structure for the printer comprises a base and a cover plate, wherein the cover plate is rotatably connected with the base and has a covering state covering the base and an opening state opening relative to the base;

the base is provided with at least two first connecting parts which are arranged at intervals in the length direction, each first connecting part is provided with a shaft hole which is positioned on the same straight line, the cover plate is provided with a second connecting part corresponding to each first connecting part, each second connecting part is provided with a rotating shaft which can be inserted into the corresponding shaft hole, the base is also provided with a joint curved surface which can be in sliding contact with the second connecting part at least at the position adjacent to one of the second connecting parts, the joint curved surface is provided with an arc-shaped limiting groove of which the extending direction is consistent with the rotating direction of the rotating shaft, at least one second connecting part is provided with a convex block which protrudes towards the joint curved surface, and the convex block can be slidably restrained in the arc-shaped limiting groove in the state that the rotating shaft is inserted into the corresponding shaft hole.

In order to facilitate assembly, the convex block on the second connecting part can smoothly slide into the corresponding arc-shaped limiting groove, the curved joint surface is further provided with a sliding groove which is positioned on the side part of the arc-shaped limiting groove and is communicated with the arc-shaped limiting groove, and the convex block on the second connecting part can slide into the arc-shaped limiting groove from the sliding groove in the process that the rotating shaft is inserted into the corresponding shaft hole.

It is conceivable that the projection is provided as an elastically stretchable projection structure, and the sliding groove structure may not be provided.

In order to better conform to the assembling process of a user, the sliding groove is perpendicular to the arc limiting groove, and a necking structure is arranged at the joint position of the sliding groove and the arc limiting groove. The design of throat structure can effectively avoid the apron in the rotation process, and the lug is deviate from the arc spacing groove and is returned to the spout.

In order to facilitate processing and save materials, a cavity communicated with the arc-shaped limiting groove and the sliding groove is defined on the base.

In order to carry out reasonable design to the apron structure to make the apron can steadily rotate (can not appear rocking) relative to the base to and guarantee the apron and can level and smoothly laminate with the base under the lid closes the state, the orientation has on the medial surface of apron the base is protruding, and is the arc seat of platykurtic, and this arc seat has relative first terminal surface and second terminal surface and connects in the length direction of apron outer peripheral face between first terminal surface and the second terminal surface, the pivot locate on the first terminal surface or the second terminal surface of arc seat, the lug locate on the outer peripheral face of arc seat, this arc seat has constituted promptly the second connecting portion.

In order to be matched with the arc-shaped seat, the base is provided with gap grooves which are arranged at intervals along the length direction of the base and used for accommodating the arc-shaped seats, the part, located between two adjacent gap grooves, of the base forms the first connecting part, the inner wall surfaces of the gap grooves are arc-shaped surfaces matched with the outer wall surfaces of the arc-shaped seats, and the arc-shaped surfaces form the joint curved surfaces.

Compared with the prior art, the utility model has the advantages that: under the state in the corresponding shaft hole on the base is inserted in the pivot of apron, the lug on the apron can slide the restraint in the arc spacing groove, and the apron just can realize spacing in left and right directions through the arc spacing groove like this, rocks the problem about can not appearing. On the other hand, the sliding contact fit of the second connecting part on the cover plate and the joint curved surface on the base also enables the cover plate to rotate relative to the base more stably, and the separation problem is not easy to occur.

Drawings

Fig. 1 is a schematic perspective view of a cover plate and a base in a closed state according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 4 is a cross-sectional perspective view at B-B of FIG. 1;

FIG. 5 is a cross-sectional perspective view of FIG. 4 with the cover plate omitted;

FIG. 6 is a schematic perspective view of a partial structure of a base according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a partial structure of a cover plate according to an embodiment of the present invention;

fig. 8 is a schematic perspective view illustrating an opened state of the cover and the base according to the embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Referring to fig. 1 to 8, the rotary connection structure for a printer includes a base 10 and a cover 20, wherein the cover 20 is rotatably connected to the base 10 and has a closed state covering the base 10 and an open state opening relative to the base 10. The base 10 can be understood as a component of the printer that is fixed relative to the printer body, and the cover 20 can be understood as a cover structure that can be opened by turning, such as the paper compartment cover 20.

Referring to fig. 2, the base 10 has at least two first connection portions 11 spaced apart along a length direction thereof. In the present embodiment, the base 10 has a notched groove 14 at a side position along the length direction, wherein the portion of the base 10 between two adjacent notched grooves 14 constitutes the first connecting portion 11. The present embodiment shows four first connection portions 11. Each first connecting portion 11 is provided with a shaft hole 110, wherein the shaft hole 110 is also provided on the side wall of the notch groove 14. The shaft holes 110 of the four first connecting portions 11 are open toward the same side and are located on the same straight line.

Referring to fig. 6, the notched groove 14 of the base 10 is configured to receive the second connecting portion 21 (i.e., the arc seat) of each cover plate 20 therein. The inner wall surface of the notch 14 is an arc surface matched with the outer wall surface of the arc seat (the structure of the arc seat is described below), the arc surface forms a curved joint surface 12 in sliding fit with the arc seat, an arc limiting groove 120 with an extending direction consistent with the rotating direction of the rotating shaft 22 is formed on the curved joint surface 12, and the arc degree of the arc limiting groove 120 is used for limiting the opening and closing angle of the cover plate 20.

With reference to fig. 6, the curved joint surface 12 further has a sliding slot 121 located at a side of the arc-shaped limiting slot 120 and communicating with the arc-shaped limiting slot 120, the sliding slot 121 is perpendicular to the arc-shaped limiting slot 120, and a necking structure 122 is located at a joint position of the two. During the process of inserting the rotating shaft 22 into the corresponding shaft hole 110, the protrusion 23 on the second connecting portion 21 can slide into the arc-shaped limiting groove 120 from the sliding groove 121. The design of the necking structure 122 can effectively prevent the protrusion 23 from being separated from the arc-shaped limiting groove 120 and retreating into the sliding groove 121 in the rotation process of the cover plate 20.

Referring to fig. 5, for convenience of processing and material saving, the base 10 defines a cavity 13 communicating with the arc-shaped retaining groove 120 and the sliding groove 121, so that the arc-shaped retaining groove 120 and the sliding groove 121 are also open on the curved joining surface 12, and thus, during assembly, the depth of the arc-shaped retaining groove 120 and the sliding groove 121 does not match the thickness (relative protruding height) of the protrusion 23 on the cover plate 20.

Referring to fig. 3 and 7, the cover plate 20 of the present embodiment has an arc-shaped seat protruding toward the base 10 on an inner side surface thereof at a position adjacent to one side edge thereof. The arc-shaped seat is flat and has a first end surface 211 and a second end surface 212 opposite to each other in the longitudinal direction of the cover plate 20, and an outer circumferential surface 213 connected between the first end surface 211 and the second end surface 212. The first end surface 211 of the arc seat is provided with a rotating shaft 22 extending along the length direction of the cover plate 20, and the outer peripheral surface 213 of the arc seat is provided with a projection 23 projecting toward the curved joint surface 12 of the base 10. The size of the bump 23 in the length direction of the cover plate 20 is basically consistent with the width of the arc-shaped limiting groove 120, so that the bump 23 can be better limited in the left-right direction, and the problem of left-right shaking of the cover plate is avoided.

The arc-shaped seat of the present embodiment constitutes the second connecting portion 21 of the cover plate 20. Specifically, the number of the arc-shaped seats in the present embodiment is four, wherein the two arc-shaped seats located at the outermost sides in the length direction of the cover plate 20 are provided with the above-mentioned protrusion 23 structure, and the two arc-shaped seats located at the middle area are not provided with the above-mentioned protrusion 23. Correspondingly, the curved surface 12 of the base 10 corresponding to the arc seat with the protrusion 23 is correspondingly provided with the sliding groove 121 and the arc limiting groove 120.

The assembly process of the rotary joint structure for a printer of the present embodiment is as follows:

the convex block 23 on the arc-shaped seat on the cover plate 20 is aligned and inserted into the sliding slot 121 on the curved engagement surface 12 on the base 10, after the convex block is inserted into the sliding slot, the rotating shaft 22 of the arc-shaped seat and the shaft hole 110 on the base 10 can be aligned in the axial direction (i.e. the length direction of the base 10), and then the convex block 23 on the cover plate 20 is slid into the arc-shaped limiting groove 120 along the sliding slot 121, during which process the rotating shaft 22 on the cover plate 20 can be inserted into the corresponding shaft hole 110 on the base 10, thereby completing the assembly. The convex block 23 of the cover plate 20 can be slidably constrained in the arc-shaped limiting groove 120, so that the limiting in the left-right direction is realized, and the left-right shaking problem cannot occur. On the other hand, the sliding contact fit between the second connecting portion 21 on the cover 20 and the curved engaging surface 12 on the base 10 also makes the rotation process of the cover 20 relative to the base 10 more stable, and the disengagement problem is not easy to occur.

On the basis of the above embodiments, other embodiments can be obtained by replacing and improving the related technical features. For example, the number of the second connecting portions 21 on the cover plate 20 and the number of the first connecting portions 11 on the base 10 in the present embodiment can be reasonably selected according to actual requirements. For another example, in the embodiment, the sliding groove 121 and the arc-shaped limiting groove 120 on the curved engaging surface 12 of the base 10 are not limited to be perpendicular to each other, the engaging position and angle of the two may be reasonably designed according to the actual installation requirement, and the sliding groove 121 is not limited to be a linear groove, and may be an arc-shaped groove or other curved groove structure. For another example, in the present embodiment, the curved joining surface 12 is provided with the sliding groove 121 communicating with the arc-shaped limiting groove 120 for the protrusion 23 of the cover plate 20 to slide into the arc-shaped limiting groove 120, and it is conceivable that the protrusion 23 is provided with an elastically stretchable protrusion structure, or the sliding groove 121 structure may not be provided, so that the cover plate 20 and the base 10 can be assembled smoothly.

Claims

1. The rotary connecting structure for the printer comprises a base (10) and a cover plate (20), wherein the cover plate (20) is rotatably connected to the base (10) and has a covering state covering the base (10) and an opening state opening relative to the base (10);

the method is characterized in that: the base (10) is provided with at least two first connecting parts (11) arranged at intervals along the length direction of the base, each first connecting part (11) is provided with a shaft hole (110) positioned on the same straight line, the cover plate (20) is provided with a second connecting part (21) corresponding to each first connecting part (11), each second connecting part (21) is provided with a rotating shaft (22) capable of being inserted into the corresponding shaft hole (110), the base (10) is also provided with a joint curved surface (12) capable of being in sliding contact with the second connecting part (21) at least at the position adjacent to one second connecting part (21), the joint curved surface is provided with an arc-shaped limiting groove (120) with the extending direction consistent with the rotating direction of the rotating shaft (22), and at least one second connecting part (21) is provided with a lug (23) protruding towards the joint curved surface (12), under the state that the rotating shaft (22) is inserted into the corresponding shaft hole (110), the lug (23) can be slidably constrained in the arc-shaped limiting groove (120).

2. The rotary connection structure for a printer according to claim 1, wherein: the curved joint surface (12) is further provided with a sliding groove (121) which is positioned on the side part of the arc-shaped limiting groove (120) and communicated with the arc-shaped limiting groove (120), and in the process that the rotating shaft (22) is inserted into the shaft hole (110) corresponding to the rotating shaft, the lug (23) on the second connecting part (21) can slide into the arc-shaped limiting groove (120) from the sliding groove (121).

3. The rotary connection structure for a printer according to claim 2, wherein: the sliding groove (121) is perpendicular to the arc-shaped limiting groove (120), and a necking structure (122) is arranged at the joint position of the sliding groove and the arc-shaped limiting groove.

4. The rotary connection structure for a printer according to claim 2, wherein: the base (10) is provided with a cavity (13) which is communicated with the arc-shaped limiting groove (120) and the sliding groove (121).

5. The rotary connection structure for a printer according to any one of claims 1 to 4, wherein: the inner side surface of the cover plate (20) is provided with an arc-shaped seat which faces the base (10) and is in a flat shape, the arc-shaped seat is provided with a first end surface (211) and a second end surface (212) which are opposite to each other in the length direction of the cover plate (20) and an outer peripheral surface (213) connected between the first end surface (211) and the second end surface (212), the rotating shaft (22) is arranged on the first end surface (211) or the second end surface (212) of the arc-shaped seat, the lug (23) is arranged on the outer peripheral surface (213) of the arc-shaped seat, and the arc-shaped seat forms the second connecting part (21).

6. The rotary connection structure for a printer according to claim 5, wherein: the base (10) is provided with gap grooves (14) which are arranged at intervals along the length direction of the base and used for accommodating the arc-shaped seats, the part, located between two adjacent gap grooves (14), of the base (10) forms the first connecting part (11), the inner wall surface of each gap groove (14) is an arc-shaped surface matched with the outer wall surface of the arc-shaped seat, and the arc-shaped surface forms the joint curved surface (12).