KR102337520B1 - Platen roller installation structure of printer - Google Patents

Abstract

It presents an installation structure of a platen roller that is rotatably installed in the housing of the printing device and rotates by a driving motor to pull the printing paper, and is installed at one end of both ends in the longitudinal direction of the platen roller. roller bearings that allow rotation; a bearing holder provided in the housing to form a groove into which the roller bearing is fitted, a part of which is opened to accommodate a part of the roller bearing; a holder cap coupled to the housing to secure the roller bearing to the bearing holder while shielding the opening of the bearing holder; and a cap coupling member that allows the opening and closing of the opening while rotatably coupling the holder cap to the housing, and applies an external force to the holder cap to press the roller bearing.

Description

Platen roller installation structure of printing equipment

Embodiments disclosed herein relate to an installation structure of a platen roller installed in a printing apparatus, and more particularly, to a platen roller installation structure of a printing apparatus capable of detachably coupling the platen roller to a housing will be.

In general, a printing apparatus is an apparatus for printing characters or graphics on a printing paper.

A platen roller is installed in such a printing apparatus to perform a printing operation through a print head while transferring printing paper.

Specifically, the platen roller is rotatably installed in the housing of the printing device and installed adjacent to the print head, and rotates by a driving motor with the printing paper interposed therebetween to pull the printing paper.

Here, since the platen roller must be separated from the housing by the user when exchanging the printing paper or removing jamming of the printing paper, the platen roller is configured to be easily attached to and detached from the housing.

As a related prior art, there is a thermal printer unit disclosed in Korean Patent Publication No. 10-1491153.

In the prior art as described above, a bearing concave portion is formed in an arm installed in the housing of the printer so that the platen roller can be rotatably installed.

That is, the prior art is a configuration in which the platen roller is detachably caught and rotatably installed as the bearing concave portion is formed in a semi-circular shape.

Accordingly, the platen roller of the prior art rotates while being installed in the semi-circular bearing concave portion, and is gripped by the user when the printing paper is exchanged and separated from the bearing concave portion.

However, in the prior art, as the bearing concave portion is formed in a semi-circular shape, the platen roller cannot be securely installed because the upper part of the bearing concave portion is opened. There is a problem.

Therefore, there is a need for a technique for solving the above-mentioned problems.

On the other hand, the above-mentioned background art is technical information that the inventor possessed for the purpose of derivation of the present invention or acquired during the derivation process of the present invention, and it cannot be said that it is necessarily known technology disclosed to the general public before the filing of the present invention. .

The embodiments disclosed in the present specification provide a platen roller installation structure of a printing apparatus that can be fixed by pressing so that the platen roller does not arbitrarily flow or separate while detachably coupling the platen roller to the housing of the printing apparatus. purpose is to

Specifically, in the embodiments disclosed herein, the platen roller can be fixed by blocking the opening of the bearing holder for accommodating the roller bearing installed on the platen roller, and the roller bearing is pressed through an external force such as elastic force or magnetic force. The purpose of this is to propose a platen roller installation structure of a printing device that can firmly fix the platen roller without flow.

In addition, the embodiments disclosed in this specification have an object to present a platen roller installation structure of a printing device that can facilitate gripping by a user by discharging the roller bearings from the bearing holder when the bearing holder is opened. have.

As a technical means for achieving the above technical problem, according to an embodiment of the platen roller installation structure of the printing apparatus, the platen is rotatably installed in the housing of the printing apparatus and rotates by a driving motor to pull the printing paper. An installation structure of a roller, comprising: a roller bearing installed at one end of both longitudinal ends of the platen roller to allow rotation of the platen roller; a bearing holder provided in the housing to form a groove into which the roller bearing is fitted, a part of which is opened to accommodate a part of the roller bearing; a holder cap coupled to the housing to secure the roller bearing to the bearing holder while shielding the opening of the bearing holder; and a cap coupling member that allows the opening and closing of the opening while rotatably coupling the holder cap to the housing, and applies an external force to the holder cap to press the roller bearing.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, the cap coupling member is fastened to the housing while penetrating one end of both ends in the longitudinal direction of the holder cap so that one end of the holder cap can be pivotally rotated. a pivot shaft in which a head portion is formed at the upper end thereof; and an elastic member interposed between the head part and one end of the holder cap while being fitted to the pivot shaft and pressing the holder cap in the direction of the roller bearing while providing an elastic force in an open direction.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, the cap coupling member includes: a locking holder formed in the form of a groove or a hole at the other end of both ends in the longitudinal direction of the holder cap to provide a locking portion; and a locking protrusion formed to protrude from the housing and fitted into the locking holder to constrain the other end of the holder cap.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, the bearing holder is formed in an arc shape exceeding 180 degrees while being formed as an arc-shaped groove corresponding to the roller bearing to horizontally rotate the roller bearing. It can only be entered in one direction.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, it may further include a bearing ejector for discharging from the bearing holder while horizontally moving the roller bearing by rotation of the holder cap.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, the bearing ejector is formed to protrude from the holder cap and disposed adjacent to the roller bearing, and the roller bearing is moved by rotation of the holder cap. It may include an ejection protrusion for horizontally moving while pressing.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, at least one of the locking holder and the locking protrusion may be formed of a magnetic material and may be coupled to each other by magnetic force.

In addition, according to an embodiment of the platen roller installation structure of the printing apparatus, the cap coupling member is fastened to the housing while penetrating one end of both ends in the longitudinal direction of the holder cap so that one end of the holder cap can be pivotally rotated. a pivot shaft in which a head portion is formed at the upper end thereof; a locking holder formed in the form of a groove or a hole at the other end of both ends in the longitudinal direction of the holder cap to provide a locking portion; and a locking protrusion formed to protrude from the housing and fitted into the locking holder to constrain the other end of the holder cap, wherein at least one of the locking holder and the locking protrusion is formed of a magnetic material and coupled to each other by magnetic force. can

According to any one of the above-mentioned problem solving means, since the roller bearing provided on the platen roller is coupled to the bearing holder and the bearing holder is shielded by the holder cap, the platen roller does not flow or separate arbitrarily. Since the roller bearings are pressed through the

In addition, according to any one of the above-mentioned problem solving means, since the elastic force is provided by the elastic member while the holder cap is pivotally rotatably coupled about the pivot axis, the bearing holder can be easily opened and closed by pivoting the holder cap. The platen roller installation structure of the printing apparatus can be presented.

In addition, according to any one of the above-mentioned problem solving means, since the other end of the holder cap is constrained to the housing by the locking holder and the locking protrusion, the platen roller installation structure of the printing apparatus can be prevented from pivoting arbitrarily of the holder cap. can present

In addition, according to any one of the above-described problem solving means, when the locking holder or the locking projection is made of a magnetic material, the holder cap is firmly fastened by the magnetic force of the locking holder or the locking projection, so that the configuration of the elastic member can be omitted. The platen roller installation structure of the device can be suggested.

In addition, according to any one of the above-mentioned problem solving means, it is possible to present a platen roller installation structure of a printing apparatus in which the vertical flow of the roller bearing can be prevented as the bearing holder is formed in an arc shape exceeding 180 degrees. have.

In addition, according to any one of the above-mentioned problem solving means, since the ejection protrusion constituting the bearing ejector rotates together with the holder cap and presses the roller bearing to move it horizontally, the platen roller can be easily gripped when the holder cap is opened. The purpose of this study is to present the platen roller installation structure of the printing device that can be discharged from the bearing holder.

Effects obtainable in the disclosed embodiments are not limited to the above-mentioned effects, and other effects not mentioned are clear to those of ordinary skill in the art to which the embodiments disclosed from the description below belong. can be understood clearly.

1 is a configuration diagram showing an internal structure of a printing apparatus to which a platen roller installation structure of the printing apparatus according to an embodiment is applied.
2 is a partial perspective view showing the main part of the platen roller installation structure of the printing apparatus according to the embodiment.
3 is a partial perspective view illustrating an open state of the holder cap shown in FIG. 2 .
4 is a partial perspective view showing a state in which the platen roller is separated from the bearing holder.
5 is a longitudinal cross-sectional view showing a platen roller installation structure of a printing apparatus according to an embodiment.
6 is a plan view showing an embodiment of the bearing ejector provided in the holder cap.

Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below may be modified and implemented in various different forms. In order to more clearly describe the characteristics of the embodiments, detailed descriptions of matters widely known to those of ordinary skill in the art to which the following embodiments belong are omitted. In addition, in the drawings, parts irrelevant to the description of the embodiments are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a component is said to be “connected” with another component, it includes not only a case of 'directly connected' but also a case of 'connected with another component interposed therebetween'. In addition, when a component "includes" a component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram showing the internal structure of a printing apparatus to which the platen roller installation structure of the printing apparatus according to an embodiment is applied, and FIG. 2 is an extract of the main part of the platen roller installation structure of the printing apparatus according to an embodiment. It is a partial perspective view showing, FIG. 3 is a partial perspective view showing an open state of the holder cap shown in FIG. 4 is a partial perspective view showing a state in which the platen roller is separated from the bearing holder, FIG. 5 is a longitudinal cross-sectional view showing the platen roller installation structure of the printing apparatus according to an embodiment, and FIG. 6 is provided in the holder cap It is a plan view showing an embodiment of a bearing ejector that becomes

As shown in FIG. 1 , the platen roller installation structure of the printing apparatus according to an embodiment is rotatable and detachable from the housing 20 at the same time as the platen roller 10 installed in the printing apparatus 1 and pulling the printing paper. For possible installation, as shown in FIG. 2 , it may be configured to include a roller bearing 100 , a bearing holder 200 , a holder cap 300 , and a cap coupling member 400 .

The roller bearing 100 is a component that allows rotation of the platen roller 10. As shown in FIG. 3, the roller bearing 100 is installed at one end of both longitudinal ends of the platen roller 10 and is a bearing holder ( 200) while allowing rotation of the platen roller 10.

Here, the platen roller 10 is provided with a rubber roller 11 in the middle, one end of both ends in the longitudinal direction is provided with the aforementioned roller bearing 100, and a gear unit (not shown) is installed at the other end. The printing paper can be conveyed through the roller 11 while rotating by a driving motor (not shown).

The bearing holder 200 is a component constituting the coupling portion of the roller bearing 100 .

Specifically, the bearing holder 200 may accommodate a portion of the roller bearing 100 while being formed as an arc-shaped groove with an upper end opened in the housing 20 .

Here, the bearing holder 200 may be formed as an arc-shaped groove exceeding 180 degrees as shown in FIGS. 4 and 5 .

That is, the bearing holder 200 is formed in a circular arc shape exceeding a semicircle, so that the width of the opening can be gradually narrowed toward the upper part, and accordingly, the roller bearing 100 is moved in and out of the roller bearing 100 only in the horizontal direction. It can be prevented from flowing in the vertical direction.

Of course, the bearing holder 200 is formed in an arc shape of 180 degrees or less, so that the roller bearing 100 can be moved in and out in the horizontal and vertical directions. 100) can prevent vertical flow.

In addition, as the bearing holder 200 is formed in an arc shape of 180 degrees or less and a step (not shown) is formed in the longitudinal direction of the platen roller 10 , the roller bearing 100 may be moved in and out only in the vertical direction.

The holder cap 300 is a component for fixing the roller bearing 100 to the bearing holder 200 while shielding the opening of the bearing holder 200 .

This holder cap 300 may be configured in a shape corresponding to the roller bearing 100 exposed to the bearing holder 200, and pivotal rotation is possible on the housing 20 via a cap coupling member 400 to be described later. The bearing holder 200 can be opened or closed while pivoting in the horizontal direction through rotation by the user.

The cap coupling member 400 enables opening and closing of the bearing holder 200 by horizontal rotation of the holder cap 300 by pivotally coupling the holder cap 300 to the housing 20, By providing an external force, such as an elastic force or magnetic force, to the holder cap 300, it is a component to press and fix the roller bearing 100 through the elastic force.

Specifically, the cap coupling member 400 may be configured to include a pivot shaft 410 and an elastic member 420 as shown in FIGS. 2 to 5 .

The pivot shaft 410 is a component constituting the pivot rotation center of the holder cap 300 , and as shown in FIG. 5 , is composed of a bolt having a head portion 411 formed at the upper end and penetrates one end of the holder cap 300 . Thus, by being fastened to the housing 20 , it is possible to form a center for pivot rotation of the holder cap 300 .

The elastic member 420 is a component that provides an elastic force to the holder cap 300 .

Specifically, the elastic member 420 is composed of a compression coil spring interposed between the head portion 411 of the pivot shaft 410 and the holder cap 300, as shown in FIG. 5, and provides an elastic force in the open direction. can do.

Accordingly, the holder cap 300 may be provided with an elastic force in the vertical direction by the elastic member 400 , and may be fixed to the bearing holder 200 by pressing the roller bearing 100 .

Meanwhile, the cap coupling member 400 may be configured to further include a locking holder 430 and a locking protrusion 440 .

The locking holder 430 and the locking projection 440 are components for preventing the bearing holder 200 from being opened while the holder cap 300 is arbitrarily rotated.

Specifically, the locking holder 430 is formed in the form of a hole in the other end of the pivot shaft 410 among both ends of the holder cap 300 as shown in FIG. ) can provide a stopping point.

The locking protrusion 440 may be formed to protrude from the housing 20 , and may restrain the holder cap 300 while being inserted into the locking holder 430 .

That is, the holder cap 300 can be prevented from arbitrarily rotating by being fitted through the locking holder 430 to the locking protrusion 440 protruding from the housing 20 .

Here, the locking holder 430 or the locking projection 440 may be coupled to each other by magnetic force by being formed of a magnetic material.

That is, the holder cap 200 may not be arbitrarily opened by being coupled by the magnetic force of the locking protrusion 440 or the locking holder 430, and also by pressing the roller bearing 100 through the magnetic force, the roller bearing ( 100) may be fixed to the bearing holder 200 .

Accordingly, in the cap coupling member 400, when the locking holder 430 or the locking protrusion 400 is made of a magnetic material, the configuration of the above-described elastic member 420 may be omitted.

Meanwhile, the platen roller installation structure of the printing apparatus according to an embodiment may further include a bearing ejector 500 as shown in FIG. 6 .

The bearing ejector 500 is a component for discharging the roller bearing 100 from the bearing holder 200 while horizontally moving the roller bearing 100 when the holder cap 300 rotates.

That is, the bearing ejector 500 discharges the roller bearing 100 coupled to the platen roller 10 from the bearing holder 200 when the holder cap 300 is opened for separation of the platen roller 10 . It is a component that can be easily gripped by a user.

For example, the bearing ejector 500 may be configured to include an ejection protrusion 510 as shown in FIG. 6 .

Specifically, the ejection protrusion 510 is protruded from the holder cap 300 and disposed adjacent to the roller bearing 100, and rotates together with the holder cap 300 when the holder cap 300 is opened. The roller bearing 100 can be discharged from the bearing holder 200 by pressing 100) to horizontally move it.

Meanwhile, in addition to the configuration of the ejection protrusion 510 , the bearing ejector 500 may satisfy any configuration as long as it can horizontally move the roller bearing 100 when the holder cap 300 rotates.

An installation method and a separation method of the platen roller 10 of the printing apparatus according to an embodiment including the above components will be described.

When installing the platen roller 10, the user installs a portion having an outer diameter smaller than that of the roller bearing 100 formed between the roller 11 constituting the platen roller 10 and the roller bearing 100 to the bearing holder ( 200), the roller bearing 100 is inserted into the bearing holder 200 while horizontally moving the platen roller 10.

Then, the user shields the opening of the bearing holder 200 while pivoting the other end of the holder cap 300 about the pivot shaft 410 .

At this time, the user rotates the holder cap 300 while compressing the elastic member 420 by lifting the holder cap 300 upward so that the locking holder 430 can be fitted into the locking projection 440, and the rotation is completed. After that, the holder cap 300 is lowered to couple the locking holder 430 to the locking protrusion 440 .

Accordingly, the holder cap 300 is fixed to the bearing holder 200 by pressing the roller bearing 100 by the elastic force of the elastic member 420 , and the locking holder 430 is fitted to the locking projection 440 . Accordingly, the bearing holder 200 may be shielded without arbitrarily rotating.

When the platen roller 10 is separated from the housing 20, the user lifts the holder cap 300 upward to separate the locking holder 430 and the locking protrusion 440, and then pivots the holder cap 300. Rotate to open the bearing holder 200 .

At this time, when the ejection protrusion 510 is provided on the holder cap 300, the roller bearing 100 moves horizontally by the pressurization of the ejection protrusion 510 by the rotation of the holder cap 300, and the bearing holder 200. is emitted from

The user separates the platen roller 10 from the housing 20 by holding the roller bearing 100 discharged from the bearing holder 200 .

As described above, according to the platen roller installation structure of the printing apparatus according to the embodiment, the roller bearing 100 provided in the platen roller 10 is coupled to the bearing holder 200 and the bearing holder 200 ) is shielded by the holder cap 300 so that the platen roller 10 does not flow or separate arbitrarily. In particular, since the holder cap 300 presses the roller bearing 100 through the elastic force of the elastic member 410, The turn roller 10 may be firmly fixed.

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments pertain can easily transform into other specific forms without changing the technical idea or essential features of the above-described embodiments. you will understand Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope to be protected through this specification is indicated by the claims described below rather than the above detailed description, and it should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

1: printing device
10: platen roller
20: housing
100: roller bearing
200: bearing holder
300: holder cap
400: cap coupling member
410: pivot axis
411: head
420: elastic member
430: catch holder
440: stumbling block
500: bearing ejector
510: ejection projection

Claims (8)

An installation structure of a platen roller that is rotatably installed in the housing of a printing device and pulls printing paper while rotating by a driving motor,
a roller bearing installed at one end of both longitudinal ends of the platen roller to allow rotation of the platen roller;
It is provided in the housing to form a groove into which the roller bearing is fitted, and a part is opened to accommodate a part of the roller bearing, but the width of the opened opening is formed with a narrow upper part based on the central axis width of the opening, so that the roller bearing a bearing holder for entering and leaving only in the horizontal direction;
a holder cap coupled to the housing to secure the roller bearing to the bearing holder while shielding the opening of the bearing holder; and
and a cap coupling member for allowing the opening and closing of the opening while rotatably coupling the holder cap to the housing, and for pressing the roller bearing by providing an external force to the holder cap.
An installation structure of a platen roller that is rotatably installed in the housing of a printing device and pulls printing paper while rotating by a driving motor,
a roller bearing installed at one end of both longitudinal ends of the platen roller to allow rotation of the platen roller;
a bearing holder provided in the housing to form a groove into which the roller bearing is fitted, a part of which is opened to accommodate a part of the roller bearing;
a holder cap coupled to the housing to secure the roller bearing to the bearing holder while shielding the opening of the bearing holder;
a cap coupling member allowing the opening and closing of the opening while rotatably coupling the holder cap to the housing, and applying an external force to the holder cap to press the roller bearing; and
and a bearing ejector for discharging the roller bearing from the bearing holder while horizontally moving the roller bearing by rotation of the holder cap.
3. The method of claim 1 or 2,
The cap coupling member,
a pivot shaft which is fastened to the housing while passing through one end of both ends of the holder cap in the longitudinal direction to enable pivot rotation of one end of the holder cap, and a head portion is formed at the upper end; and
The platen roller of a printing apparatus including an elastic member interposed between the head part and one end of the holder cap while being fitted to the pivot shaft and pressing the holder cap in the direction of the roller bearing while providing an elastic force in the opening direction. installation structure.
4. The method of claim 3,
The cap coupling member,
a locking holder formed in the form of a groove or a hole at the other end of both ends in the longitudinal direction of the holder cap to provide a locking portion; and
The platen roller installation structure of the printing apparatus further comprising a locking protrusion formed to protrude from the housing and fitted into the locking holder to constrain the other end of the holder cap.
5. The method of claim 4,
The platen roller installation structure of the printing apparatus, characterized in that at least one of the locking holder and the locking protrusion is formed of a magnetic material and coupled to each other by magnetic force.
3. The method of claim 1 or 2,
The bearing holder is
A platen roller installation structure of a printing apparatus that is formed as an arc-shaped groove corresponding to the roller bearing and is formed in an arc-shaped exceeding 180 degrees to allow the roller bearing to enter and exit only in a horizontal direction.
3. The method of claim 1 or 2,
The cap coupling member,
a pivot shaft which is fastened to the housing while passing through one end of both ends of the holder cap in the longitudinal direction to enable pivot rotation of one end of the holder cap, and a head portion is formed at the upper end;
a locking holder formed in the form of a groove or a hole at the other end of both ends in the longitudinal direction of the holder cap to provide a locking portion; and
A locking protrusion formed to protrude from the housing and fitted into the locking holder to constrain the other end of the holder cap,
The platen roller installation structure of the printing apparatus, characterized in that at least one of the locking holder and the locking protrusion is formed of a magnetic material and coupled to each other by magnetic force.
3. The method of claim 2,
The bearing ejector is
The platen roller installation structure of a printing apparatus comprising: an ejection protrusion formed to protrude from the holder cap and disposed adjacent to the roller bearing, and for horizontally moving the roller bearing while pressing the roller bearing by rotation of the holder cap.

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