KR20200009386A - Platen roller installation structure of printer - Google Patents

Abstract

Provided is an installation structure of a platen roller which is rotationally installed in the housing of a printer and pulls printing paper while rotating by a motor. The installation structure of a platen roller includes: a roller bearing installed at one of both ends in the longitudinal direction of the platen roller and allowing rotation of the platen roller; a bearing holder which is provided in the housing and is opened in a part to receive a part of the roller bearing while forming a groove into which the roller bearing is inserted; a holder cap which is coupled to the housing and fixes the roller bearing to the bearing holder while closing the opening of the bearing holder; and a cap coupling member which allows opening and closing of the opening while rotationally coupling the holder cap to the housing, and provides an external force to the holder cap to press the roller bearing.

Description

Platen roller installation structure of printing device {PLATEN ROLLER INSTALLATION STRUCTURE OF PRINTER}

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 a device for printing text or graphics on printing paper.

The printing apparatus is provided with a platen roller to carry out a printing operation through a print head while transferring printing paper.

Specifically, the platen roller is rotatably installed in the housing of the printing apparatus and installed adjacent to the print head, and pulls the printing paper while rotating by the driving motor while interposing the printing head with the printing head.

Here, the platen roller is configured to be easily attached to or detached from the housing since the platen roller should be separated from the housing by the user when replacing the printing paper or removing the jam of the printing paper.

As a related prior art, there is a thermal printer unit of Republic of Korea Patent Publication No. 10-1491153.

In the prior art as described above, a bearing recess is formed in the 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 recess is formed in a semicircular shape.

Therefore, the platen roller of the prior art is rotated in a state of being installed in the semicircular bearing recess portion, is gripped by the user when the printing paper is replaced, separated from the bearing recess portion.

However, in the prior art, since the bearing recess is formed in a semicircular shape, the upper portion of the bearing recess is opened so that the platen roller cannot be firmly installed, and the printing paper cannot be smoothly towed while the flow is generated in the vertical direction. There is a problem.

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

On the other hand, the background art described above is technical information that the inventors possessed for the derivation of the present invention or acquired in the derivation process of the present invention, and is not necessarily a publicly known technique disclosed to the general public before the present application. .

Embodiments disclosed herein provide a platen roller mounting structure of a printing device which can be fixed by pressing the platen roller so as not to flow or separate arbitrarily while detachably coupling the platen roller to the housing of the printing device. There is a purpose.

Specifically, embodiments disclosed in the present specification may fix the platen roller by shielding the opening of the bearing holder for accommodating the roller bearing installed in the platen roller, and pressurizes the roller bearing through an external force such as an elastic force or a magnetic force. By doing so, it is an object of the present invention to provide a platen roller mounting structure of a printing apparatus capable of fixing the platen roller firmly without flow.

In addition, the embodiments disclosed herein are intended to present a platen roller mounting structure of the printing apparatus that can facilitate the gripping by the user by ejecting the roller bearing from the bearing holder when opening the bearing holder. have.

As a technical means for achieving the above-described technical problem, according to one embodiment of the platen roller mounting structure of the printing apparatus, the platen rotatably installed in the housing of the printing apparatus to pull the printing paper while rotating by the drive motor A roller bearing, 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 and a portion thereof to be opened to receive a portion of the roller bearing; A holder cap coupled to the housing to fix the roller bearing to the bearing holder while shielding the opening of the bearing holder; And a cap coupling member configured to rotatably couple the holder cap to the housing to allow opening and closing of the opening and to provide an external force to the holder cap to press the roller bearing.

In addition, according to an embodiment of the platen roller mounting structure of the printing apparatus, the cap coupling member is coupled to the housing while penetrating one end of both ends in the longitudinal direction of the holder cap to pivotally rotate one end of the holder cap. Pivotally coupled, the pivot shaft is formed in the upper end; And an elastic member interposed between the head portion and one end of the holder cap in a state of being fitted to the pivot shaft, and pressing the holder cap in the roller bearing direction while providing an elastic force in the opening direction.

In addition, according to one embodiment of the platen roller mounting structure of the printing apparatus, the cap engaging member, the locking holder is formed in the other end of the longitudinal end of the holder cap in the form of a groove or a hole to provide a locking portion; And a locking protrusion protruding from the housing to be caught by the locking holder to restrain the other end of the holder cap.

In addition, according to an embodiment of the platen roller mounting structure of the printing apparatus, the bearing holder is formed in an arc of more than 180 degrees while being formed in an arc-shaped groove corresponding to the roller bearing to horizontally the roller bearing Can only enter and exit in the direction.

In addition, according to an embodiment of the platen roller mounting 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 the rotation of the holder cap.

In addition, according to one embodiment of the platen roller mounting structure of the printing apparatus, the bearing ejector is protruded to the holder cap and disposed adjacent to the roller bearing, and the roller bearing is rotated by the rotation of the holder cap. It may include an ejection protrusion for horizontal movement while pressing.

In addition, according to one embodiment of the platen roller mounting structure of the printing apparatus, the locking holder and the locking projection is formed of at least one magnetic material can be coupled to each other by a magnetic force.

In addition, according to an embodiment of the platen roller mounting structure of the printing apparatus, the cap coupling member is coupled to the housing while penetrating one end of both ends in the longitudinal direction of the holder cap to pivotally rotate one end of the holder cap. Pivotally coupled, the pivot shaft is formed in the upper end; A locking holder which is formed in the shape of a groove or a hole at the other end of both ends of the holder cap in the longitudinal direction to provide a locking portion; And a locking protrusion protruding from the housing to be caught by the locking holder and restraining the other end of the holder cap, wherein the locking holder and the locking protrusion are formed of a material having magnetic properties to be coupled to each other by magnetic force. Can be.

According to any one of the above-mentioned means for solving the problem, the roller bearing provided on the platen roller is coupled to the bearing holder, the bearing holder is shielded by the holder cap, so that the platen roller does not flow or separate arbitrarily, in particular, the holder cap is elastic Since the roller bearing is pressed through the platen roller, the platen roller mounting structure of the printing apparatus can be firmly fixed.

In addition, according to any one of the above-mentioned means for solving the problem, since the holder cap is coupled to the pivot axis to enable the pivot rotation, the elastic member is provided by the elastic member so that the bearing holder can be easily opened and closed by pivoting the holder cap. The platen roller mounting structure of the printing apparatus can be presented.

In addition, according to any one of the above-described problem solving means, the other end portion of the holder cap is constrained to the housing by the locking holder and the locking projection, so that the platen roller mounting structure of the printing apparatus can be prevented from pivoting the holder cap arbitrarily Can present

In addition, according to any one of the above-described problem solving means, when the locking holder or the locking projection is formed of a magnetic material, the holder cap is securely 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 mounting structure of the device can be presented.

In addition, according to any one of the above-mentioned means for solving the problem, the platen roller mounting structure of the printing apparatus that can prevent the vertical flow of the roller bearing can be proposed as the bearing holder is formed in an arc shape of more than 180 degrees have.

In addition, according to any one of the above-described problem solving means, the ejector protrusion constituting the bearing ejector rotates together with the holder cap to press the roller bearing to move horizontally, so that the platen roller is easily gripped when the holder cap is opened. The purpose of the present invention is to propose a platen roller mounting structure of a printing apparatus that can be discharged from a bearing holder.

The effects obtainable in the disclosed embodiments are not limited to the effects mentioned above, and other effects not mentioned above are apparent to those skilled in the art to which the embodiments disclosed from the following description belong. Can be understood.

1 is a block diagram showing the internal structure of a printing apparatus to which the platen roller mounting structure of the printing apparatus according to an embodiment is applied.
2 is a partial perspective view showing the main portion of the platen roller mounting structure of the printing apparatus according to an embodiment.
3 is a partial perspective view showing an open state of the holder cap shown in FIG.
4 is a partial perspective view illustrating a state where the platen roller is separated from the bearing holder.
5 is a longitudinal sectional view showing a platen roller mounting structure of a printing apparatus according to an embodiment.
Figure 6 is a plan view showing an embodiment of a 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 embodied in various different forms. In order to more clearly describe the features of the embodiments, detailed descriptions of the matters well known to those skilled in the art to which the following embodiments belong are omitted. In the drawings, parts irrelevant to the description of the embodiments are omitted, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a configuration is "connected" to another configuration, this includes not only 'directly connected', but also 'connected with another configuration in the middle'. In addition, when a configuration "includes" a certain configuration, this means that, unless specifically stated otherwise, it may further include other configurations other than the other configuration.

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

1 is a block diagram illustrating an internal structure of a printing apparatus to which a platen roller mounting structure of a printing apparatus according to an embodiment is applied, and FIG. 2 is an extract of main parts of the platen roller mounting structure of a printing apparatus according to an embodiment. Fig. 3 is a partial perspective view showing the holder cap shown in Fig. 2 being opened. In addition, Figure 4 is a partial perspective view showing the platen roller is separated from the bearing holder, Figure 5 is a longitudinal sectional view showing the platen roller installation structure of the printing apparatus according to an embodiment, Figure 6 is provided in the holder cap A plan view showing one embodiment of a bearing ejector.

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

The roller bearing 100 is a component that allows the rotation of the platen roller 10, as shown in Figure 3 is installed on one end of both ends of the longitudinal direction of the platen roller 10 bearing bearing ( It is coupled to the 200 may allow the rotation of the platen roller 10.

Here, the platen roller 10 is provided with a rubber roller 11 in the center portion, one end of the both ends in the longitudinal direction is provided with the above-described roller bearing 100, the other end of the gear portion not shown The printing paper may be transferred through the roller 11 while being rotated by the driving motor (not shown).

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

In detail, the bearing holder 200 may receive a portion of the roller bearing 100 while being formed as an arc-shaped groove having 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, since the bearing holder 200 is formed in an arc shape exceeding a semicircle, the width of the opening portion may be gradually narrowed toward the upper portion. Accordingly, the roller bearing 100 may move in and out of the roller bearing 100 only in the horizontal direction. It can prevent the flow in the vertical direction.

Of course, the bearing holder 200 may be formed in an arc shape of 180 degrees or less to allow the roller bearing 100 to enter and exit in the horizontal and vertical directions, while the opening is shielded by the holder cap 300 to be described below, and the roller bearing ( Vertical flow of 100) can be prevented.

In addition, the bearing holder 200 may be formed in an arc shape of 180 degrees or less, and the stepped not shown in the longitudinal direction of the platen roller 10 may be formed to allow the roller bearing 100 to enter and exit 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.

The holder cap 300 may be configured in a form corresponding to the roller bearing 100 exposed to the bearing holder 200, pivoting to the housing 20 via the cap coupling member 400 to be described later The bearing holder 200 may be opened or closed while being pivotally rotated in the horizontal direction through rotation by the user.

The cap coupling member 400 pivotally rotates the holder cap 300 to the housing 20 to allow the bearing holder 200 to be opened and closed by horizontal rotation of the holder cap 300. By providing an external force such as an elastic force or a magnetic force to the holder cap 300 is a component to press the roller bearing 100 to be fixed by the elastic force.

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

The pivot shaft 410 is a component forming the pivot rotation center of the holder cap 300. As shown in FIG. 5, the pivot shaft 410 consists of a bolt having a head portion 411 formed at an upper end thereof, and penetrates one end of the holder cap 300. By being fastened to the housing 20 can 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 to provide an elastic force in the gaping direction. can do.

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

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

The locking holder 430 and the locking protrusion 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 through the other end of the pivot shaft 410 of the both ends of the holder cap 300 in the form of a hole or formed in the groove shape as shown in Figure 5 the locking projection 440 to be described later ) Can be used as a locking part.

The locking protrusion 440 may protrude from the housing 20 to be fitted to the locking holder 430 to restrain the holder cap 300.

That is, the holder cap 300 may be prevented from rotating arbitrarily 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 protrusion 440 is formed of a magnetic material may be coupled to each other by a magnetic force.

That is, the holder cap 200 may not be opened arbitrarily 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 without the elastic force 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 formed of a magnetic material, the above-described configuration of the elastic member 420 may be omitted.

On the other hand, the platen roller mounting structure of the printing apparatus according to an embodiment may further include a bearing ejector 500 as shown in FIG.

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 to separate the platen roller 10. It is a component that can be easily gripped by a user.

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

Specifically, the ejection protrusion 510 is disposed in a state adjacent to the roller bearing 100 while being formed to protrude into the holder cap 300, the roller bearing while rotating with the holder cap 300 when the holder cap 300 is opened ( The roller bearing 100 may be discharged from the bearing holder 200 by pressing 100 and horizontally moving it.

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

It describes the installation method and the separation method of the platen roller 10 of the printing apparatus according to an embodiment including the above components.

When the platen roller 10 is installed, the user may have a bearing holder (a portion having an outer diameter smaller than that of the roller bearing 100 formed between the roller 11 and the roller bearing 100 constituting the platen roller 10). After inserting into the roller 200, the roller bearing 100 is inserted into the bearing holder 200 while the platen roller 10 is horizontally moved.

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 to the locking protrusion 440, and completes the rotation. After the holder cap 300 is lowered to engage the locking holder 430 to the locking projection 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, the locking holder 430 is fitted to the locking projection 440. According to this may be to shield the bearing holder 200 without any rotation.

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 in 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. Ejected from

The user grips the roller bearing 100 discharged from the bearing holder 200 to separate the platen roller 10 from the housing 20.

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

The above-described embodiments are for illustrative purposes, and those skilled in the art to which the above-described embodiments belong may easily change to other specific forms without changing the technical spirit or essential features of the above-described embodiments. I can understand. Therefore, it is to 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 distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected by the present specification is represented by the following claims rather than the above description, and 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 portion
420: elastic member
430: jam holder
440: jamming
500: Bearing Ejector
510: eject protrusion

Claims (8)

As the mounting structure of the platen roller rotatably installed in the housing of the printing apparatus to pull the printing paper while rotating by the drive 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 which is provided in the housing to form a groove into which the roller bearing is fitted and is partially opened to receive a portion of the roller bearing;
A holder cap coupled to the housing to fix the roller bearing to the bearing holder while shielding the opening of the bearing holder; And
And a cap coupling member for rotatably coupling the holder cap to the housing to allow opening and closing of the opening and providing an external force to the holder cap to press the roller bearing.
The method of claim 1,
The cap coupling member,
A pivot shaft coupled to the housing while penetrating one end of both ends of the holder cap in the longitudinal direction to pivotally couple one end of the holder cap, and having a head portion formed at an upper end thereof; And
A platen roller of the printing apparatus including an elastic member interposed between the head portion and one end of the holder cap in a state of being fitted to the pivot shaft, and for pressing the holder cap in the roller bearing direction while providing an elastic force in the opening direction. Installation structure.
The method of claim 2,
The cap coupling member,
A locking holder which is formed in the shape of a groove or a hole at the other end of both ends of the holder cap in the longitudinal direction to provide a locking portion; And
The platen roller mounting structure of the printing apparatus further comprising a locking protrusion protruding from the housing and being caught by the locking holder to restrain the other end of the holder cap.
The method of claim 1,
The bearing holder,
The platen roller mounting structure of the printing apparatus is formed in an arc-shaped groove exceeding 180 degrees while being formed as an arc-shaped groove corresponding to the roller bearing.
The method of claim 1,
And a bearing ejector for ejecting from the bearing holder while horizontally moving the roller bearing by the rotation of the holder cap.
The method of claim 5, wherein
The bearing ejector,
The platen roller mounting structure of the printing apparatus including an ejection protrusion protruding from the holder cap and disposed adjacent to the roller bearing, and horizontally moving while pressing the roller bearing by the rotation of the holder cap.
The method of claim 3, wherein
And the locking holder and the locking protrusion are formed of at least one magnetic material and are coupled to each other by a magnetic force. The method of claim 1,
The cap coupling member,
A pivot shaft coupled to the housing while penetrating one end of both ends of the holder cap in the longitudinal direction to pivotally couple one end of the holder cap, and having a head portion formed at an upper end thereof;
A locking holder which is formed in the shape of a groove or a hole at the other end of both ends of the holder cap in the longitudinal direction to provide a locking portion; And
Protruding to the housing and is fitted to the engaging holder and includes a locking projection to restrain the other end of the holder cap,
And the locking holder and the locking protrusion are formed of at least one magnetic material and are coupled to each other by a magnetic force.

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