CN216400982U - Paper tearing knife mounting structure and printer - Google Patents

Abstract

The utility model relates to a paper tearing knife mounting structure and a printer, comprising a printer shell and a paper tearing knife; the printer shell is provided with a left side sliding chute and a right side sliding chute, and the paper tearing knife is connected between the left side sliding chute and the right side sliding chute in a sliding manner; a first clamping hole is formed in the paper tearing knife, a first protruding block matched with the first clamping hole is arranged on the printer shell, and an inclined guide surface is arranged at the front end of the first protruding block; during installation, the paper tearing knife moves backwards along the side sliding groove, and the first protruding block is obliquely matched with the paper tearing knife and then clamped into the first clamping hole. In the technical scheme of the utility model, the displacement of the paper tearing knife is guided by the left and right side sliding grooves on the printer shell, and the position limitation of the paper tearing knife in the up-down direction and the left-right direction is realized; and the joint of first protruding piece and first buckle has realized the spacing of paper knife in the horizontal direction. This technical scheme need not to use fasteners such as screw, and the easy dismounting of tearing the paper sword, firm has avoided the not hard up condition that drops of tearing the paper sword, structure safe and reliable.

Description

Paper tearing knife mounting structure and printer

Technical Field

The utility model relates to the technical field of printers, in particular to a paper tearing knife mounting structure and a printer.

Background

A Printer (Printer) is one of the output devices of a computer for printing the results of a computer process on an associated medium. The printers include office/business general purpose printers, business printers, passbook printers, flat-bed ticket printers, bar code printers, thermal printers, and the like, according to the purpose. Among them, in a special printer such as a stylus printer and a thermal printer, a printed paper often needs to be manually torn off, and thus such a printer often needs to be provided with a paper tearing blade. The user can cut the printing paper by the blade or the saw teeth of the paper tearing knife. The existing paper tearing knife is generally installed through fixing parts such as screws, the dismounting is inconvenient, the cost is high, the installation is not firm enough, and in the production process, the risk of falling due to the procedure installation flow is generated.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a paper tearing blade mounting structure and a printer, which are directed to the problems of the conventional printer that the paper tearing blade is inconvenient to mount and dismount and is not firm enough.

In one aspect, the present invention provides a paper tearing knife mounting structure, including: a printer housing and a paper tearing blade; the printer shell is provided with a left side sliding groove and a right side sliding groove, and the paper tearing knife is connected between the left side sliding groove and the right side sliding groove in a sliding manner; a first clamping hole is formed in the paper tearing knife, a first protruding block matched with the first clamping hole is arranged on the printer shell, and an inclined guide surface is arranged at the front end of the first protruding block; during installation, the paper tearing knife moves backwards along the side sliding groove, and the first protruding block and the paper tearing knife are obliquely guided and matched and then clamped into the first clamping hole.

Furthermore, a second convex block which is convex upwards is arranged on the printer shell, and the shape of the second convex block is big at the top and small at the bottom; the paper tearing knife is provided with a second clamping hole, and the shape of the second clamping hole is small in front and large in back; when the first protruding block is clamped into the first clamping hole, the lower end of the second protruding block is clamped into the front end of the second clamping hole, and the paper tearing knife is limited in the vertical direction.

Further, the second protruding block is inverted in a shape like a Chinese character 'tu', and the second clamping hole is small in front and large in back and slightly larger than the second protruding block in the shape like a Chinese character 'tu'.

Furthermore, a downward concave groove is formed in the printer shell and extends to the first protruding block; when the first protruding block is clamped in the first clamping hole, one part of the groove is exposed out of the first clamping hole, and the other part of the groove is covered by the paper tearing knife.

Furthermore, a limiting part is arranged on the side sliding groove; when the first protruding block is clamped into the first clamping hole, the limiting part limits the paper tearing knife in the backward direction.

Furthermore, stepped bulges are arranged on the left side and the right side of the paper tearing knife; when the first protruding block is clamped in the first clamping hole, the limiting part is abutted to the stepped protrusion.

In another aspect, the utility model further provides a printer, which comprises the paper tearing blade mounting structure.

In the technical scheme of the utility model, the displacement of the paper tearing knife is guided by the left and right side sliding grooves on the printer shell, and the position limitation of the paper tearing knife in the up-down direction and the left-right direction is realized; and the joint of first protruding piece and first buckle has realized the spacing of paper knife in the horizontal direction. This technical scheme need not to use fasteners such as screw, and the easy dismounting of tearing the paper sword, firm has avoided the not hard up condition that drops of tearing the paper sword, structure safe and reliable.

Drawings

FIG. 1 is a general schematic view of an embodiment of a mounting structure for a paper tearing blade according to the present invention;

FIG. 2 is an enlarged partial schematic view of the mounting structure of the paper knife shown in FIG. 1 at position A;

FIG. 3 is an enlarged partial schematic view of the mounting structure of the paper knife shown in FIG. 1 at position B;

FIG. 4 is an enlarged partial schematic view of the C position of the mounting structure of the paper tearing blade of FIG. 1;

FIG. 5 is a schematic structural view of a paper tearing blade according to an embodiment of the paper tearing blade mounting structure of the present invention;

FIG. 6 is a schematic structural diagram of a printer housing according to an embodiment of the present invention;

FIG. 7 is an enlarged, fragmentary view of the mounting structure of the paper tearing blade of FIG. 6 at position D;

FIG. 8 is an enlarged partial schematic view of the mounting structure of the paper knife of FIG. 7 at position E;

fig. 9 is a partially enlarged schematic view of the position F of the mounting structure of the paper tearing blade shown in fig. 8.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a printer housing; 11. a first raised block; 111. an inclined guide surface; 12. a second raised block; 13. a side chute; 131. a limiting part; 14. a groove; 2. a paper tearing knife; 21. a first card hole; 22. a second card hole; 23. a step-shaped bulge.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is apparent that the specific details set forth in the following description are merely exemplary of the utility model, which can be practiced in many other embodiments that depart from the specific details disclosed herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In an embodiment, referring to fig. 1 to 9, the present invention provides a paper tearing blade mounting structure, including a printer housing 1 and a paper tearing blade 2; the printer shell 1 is provided with a left side sliding chute and a right side sliding chute 13, and the paper tearing knife 2 is connected between the left side sliding chute and the right side sliding chute 13 in a sliding manner; a first clamping hole 21 is formed in the paper tearing knife 2, a first protruding block 11 matched with the first clamping hole 21 is arranged on the printer shell 1, and an inclined guide surface 111 is arranged at the front end of the first protruding block 11; during installation, the paper tearing knife 2 moves backwards along the side sliding groove 13, and the first protruding block 11 and the paper tearing knife 2 are obliquely guided and matched and then clamped into the first clamping hole 21.

In the technical scheme of the utility model, the displacement of the paper tearing knife 2 is guided through the left and right side sliding grooves 13 on the printer shell 1, and the position limitation of the paper tearing knife 2 in the up-down direction and the left-right direction is realized; and the joint of first protruding piece 11 and first buckle has realized tearing paper sword 2 spacing on the horizontal direction. This technical scheme need not to use fasteners such as screw, and the easy dismounting of paper knife 2, firm has avoided the not hard up condition that drops of paper knife 2, structure safe and reliable.

Referring to fig. 3, 5 and 8, a second protruding block 12 protruding upward is provided on the printer housing 1, and the second protruding block 12 has a shape with a large top and a small bottom; the paper tearing knife 2 is provided with a second clamping hole 22, and the shape of the second clamping hole 22 is small in the front and large in the back; when the first protruding block 11 is clamped into the first clamping hole 21, the lower end of the second protruding block 12 is clamped into the front end of the second clamping hole 22, and the paper tearing knife 2 is limited in the vertical direction.

Specifically, the second protrusion 12 is in an inverted "convex" shape, and the second engaging hole 22 is in a "convex" shape with a smaller front and a larger rear and slightly larger than the second protrusion 12. A slightly larger second catch 22 may facilitate insertion and removal of second bump 12.

In this embodiment, during installation, the second protruding block 12 enters from the rear end of the second engaging hole 22, and then the paper tearing blade 2 is displaced backward, and the lower end of the second protruding block 12 is engaged with the front end of the second engaging hole 22, at this time, the paper tearing blade 2 is locked by the second protruding block 12 and cannot be displaced up and down. Of course, the shapes of the second protruding block 12 and the second engaging hole 22 may be other, as long as they can engage with and engage with the paper tearing blade 2, and are not limited to the description in this embodiment.

Referring to fig. 9, a downward concave groove 14 is formed on the printer housing 1, and the groove 14 extends to the first protruding block 11; when the first protruding block 11 is snapped into the first snap hole 21, a part of the groove 14 is exposed from the first snap hole 21, and another part of the groove 14 is covered by the paper tearing blade 2.

It will be understood that when it is desired to remove the paper-tearing blade 2, the paper-tearing blade 2 is pushed to displace by inserting the blade into the groove 14 through the operation of a tip such as a nipper, so as to be free from the first and second protrusions 11 and 12. Of course, the detaching slot may be disposed at other positions, which is not described as a limitation in the present embodiment.

Referring to fig. 2, 5 and 7, the side groove 13 is provided with a stopper 131; when the first protruding block 11 is snapped into the first snap hole 21, the position-limiting portion 131 limits the paper-tearing knife 2 in the backward direction.

Specifically, the left side and the right side of the paper tearing knife 2 are both provided with a step-shaped bulge 23; when the first protruding block 11 is inserted into the first engaging hole 21, the stopper 131 abuts against the stepped protrusion 23.

It can be understood that the paper tearing knife 2 is further positioned in the front-back direction by the matching of the limiting part 131 and the stepped protrusion 23, so that the fixation is firmer. Of course, the limiting function can also be realized by other structures, such as a convex block arranged on the paper tearing knife 2.

In another aspect, the utility model further provides a printer, which comprises the paper tearing blade mounting structure.

This printer is when installation paper tearing sword 2, and paper tearing sword 2 gets into by second card hole 22, and the power pushes away paper tearing sword 2, and paper tearing sword 2 slides along two side spout 13 of printer casing 1 forward, and when sliding to the maximum position of sideslip groove 13, the first protruding piece 11 of printer casing 1 department gets into the 21 hole sites in first card hole of paper tearing sword 2 just, and six degrees of freedom of paper tearing sword 2 at this moment are all restricted. When the paper tearing blade 2 needs to be detached, the paper tearing blade 2 is pushed by inserting a tool such as tweezers into the groove 14 on the first protruding block 11, and the paper tearing blade 2 slides forwards along the side sliding groove 13 of the printer housing 1 until the paper tearing blade exits from the groove.

The printer has the following advantages: the structure of the paper tearing knife 2 is simple, safe and reliable to mount and dismount; the paper tearing knife 2 is firmly fixed, so that the paper tearing knife is prevented from falling off due to a process installation flow in the production process; the fixing parts for fixing the paper tearing knife 2 are reduced, and the cost is reduced.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, substitutions and alterations can be made without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be subject to the claims.

Claims (7)

1. A paper tearing knife mounting structure, comprising: a printer housing and a paper tearing blade; the printer shell is provided with a left side sliding groove and a right side sliding groove, and the paper tearing knife is connected between the left side sliding groove and the right side sliding groove in a sliding manner; a first clamping hole is formed in the paper tearing knife, a first protruding block matched with the first clamping hole is arranged on the printer shell, and an inclined guide surface is arranged at the front end of the first protruding block; during installation, the paper tearing knife moves backwards along the side sliding groove, and the first protruding block and the paper tearing knife are obliquely guided and matched and then clamped into the first clamping hole.

2. The mounting structure of a paper tearing blade according to claim 1, wherein a second protruding block protruding upward is provided on the printer housing, and the second protruding block has a shape of a large top and a small bottom; the paper tearing knife is provided with a second clamping hole, and the shape of the second clamping hole is small in front and large in back; when the first protruding block is clamped into the first clamping hole, the lower end of the second protruding block is clamped into the front end of the second clamping hole, and the paper tearing knife is limited in the vertical direction.

3. The mounting structure of the paper tearing knife according to claim 2, wherein the second protrusion block is in an inverted "convex" shape, and the second engaging hole is in a "convex" shape having a smaller front and a larger rear and slightly larger than the second protrusion block.

4. The paper tearing blade mounting structure of claim 1, wherein a downwardly concave groove is provided on the printer housing, the groove extending to the first raised block; when the first protruding block is clamped in the first clamping hole, one part of the groove is exposed out of the first clamping hole, and the other part of the groove is covered by the paper tearing knife.

5. The paper tearing knife mounting structure according to claim 1, wherein a limiting portion is provided on the side chute; when the first protruding block is clamped into the first clamping hole, the limiting part limits the paper tearing knife in the backward direction.

6. The paper tearing knife mounting structure according to claim 5, wherein stepped projections are provided on both left and right sides of the paper tearing knife; when the first protruding block is clamped in the first clamping hole, the limiting part is abutted to the stepped protrusion.

7. A printer comprising the paper tearing blade mounting structure according to any one of claims 1 to 6.

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