JP2002137488A - Structure for mounting flexible bush and recorder therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a flexible bush to an opening edge of an opening part surely to avoid dropping of the bush. SOLUTION: A recorder has a recorder body where a recording head with a plurality of recording wires is loaded to a carriage capable of running along a platen. The opening part 47 having the opening edge 48 is formed to a right side frame 17 of the recorder body. The opening edge is shaped to connect straight lines 49A and 49B opposite in parallel to each other with the use of curved lines 50 and 51 and a narrow part 52. The flexible bush 53 is mounted by being fitted in the opening edge in the recorder. One end side 56 of the flexible bush is fitted into the straight line 49A of the opening edge, and the other end side 57 and the vicinity therein 58 are fitted in the curved line 50 of the opening edge. A leading end 57 of the other end is formed to press the one end side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible bush mounting structure for mounting a flexible bush on an opening edge of an opening, and a recording apparatus provided with the mounting structure on a frame of a recording apparatus main body.

[0002]

2. Description of the Related Art When a recording wire of a recording head mounted on a carriage that can travel along a platen protrudes toward the platen, the recording wire is conveyed between the platen and the recording head. 2. Description of the Related Art Some recording apparatuses that record an image have a structure in which a flexible bush is attached to a frame of a recording apparatus main body.

FIG. 7 shows a side frame 1 of a recording apparatus main body.
In this example, an assembly structure of a flexible bush 102 is applied to the structure No. 01. That is, a flexible flat cable (not shown) for transmitting a recording signal is connected to the recording head (not shown), and the flexible flat cable is inserted into the opening 103 of the side frame 101. In order to prevent the flexible flat cable from being worn and damaged by the opening edge 104 of the opening 103, a flexible bush 102 made of resin is provided on the opening edge 104.
Are fitted and assembled.

[0004]

However, in recent years, the width of flexible flat cables has been increasing.
Therefore, the opening 103 of the side frame 101 also needs to be formed in a wide shape corresponding to the flexible flat cable. However, if the opening 103 has a wide shape, the flexible bush 102 fitted to the opening edge 104 of the opening 103 may interfere with the component 105 installed adjacent to the opening 103. .

Further, the flexible bush 102 has an opening 1
In the case of fitting into the curved linear portion 104B of the opening edge 104 of FIG. 03, since the restoring force against bending deformation is large, the fitting force to the curved linear portion 104B is strong. When fitted to the linear portion 104A, the restoring force hardly acts, so that the fitting force to the linear portion 104A is weak.

Therefore, in order to form the wide opening 103, a linear portion 104A of the opening edge 104 is formed at the end of the opening 103, and the linear portion 104A is formed.
If the flexible bush 102 is simply fitted to the flexible bush, the flexible bush 102 may fall off.

An object of the present invention has been made in view of the above-mentioned circumstances, and a flexible bush assembly capable of securely mounting a flexible bush on an opening edge of an opening so as not to fall off. An object of the present invention is to provide an attachment structure and a recording device provided with the attachment structure.

[0008]

According to the first aspect of the present invention, an opening having an opening edge is formed in a plate-like body, and the opening edge is formed by connecting two opposing straight lines with a curved line including a curved line. In the assembly structure of the flexible bush, in which the flexible bush is fitted and assembled to the opening edge, the flexible bush has one end side formed linearly with the opening edge. At least one of the other end and the vicinity thereof is fitted to the curved linear portion of the opening edge, and the tip of the other end is configured to press the one end. It is characterized by the following.

According to a second aspect of the present invention, an opening having an opening edge is formed in a plate-like body, and the opening edge connects two opposing straight lines using a line segment including a curved line. In the flexible bush assembling structure in which the flexible bush is fitted and assembled to the opening edge, the flexible bush is fitted at one end to a linear portion of the opening edge.
The distal end of the one end portion is inserted and fitted into a narrow portion formed at the opening edge.

According to a third aspect of the present invention, a carriage capable of traveling along a platen has a recording apparatus main body on which a recording head having a plurality of recording wires is mounted, and the recording wires are directed toward the platen. To protrude to record an image on the sheet conveyed between the recording head and the platen, the frame of the recording apparatus body is formed with an opening having an opening edge, the opening edge, The recording device has a shape in which two opposing straight lines are connected using a line segment including a curved line, and the flexible bush is fitted and assembled to the opening edge. Is fitted to the linear portion of the opening edge, and at least one of the other end portion and the vicinity thereof is fitted to the curved linear portion of the opening edge, and the tip of the other end portion is the one end side portion. Configured to press It is characterized in that the.

According to a fourth aspect of the present invention, a carriage capable of running along a platen has a recording apparatus main body on which a recording head having a plurality of recording wires is mounted, and the recording wires are directed toward the platen. To protrude to record an image on the sheet conveyed between the recording head and the platen, the frame of the recording apparatus body is formed with an opening having an opening edge, the opening edge, The recording device has a shape in which two opposing straight lines are connected using a line segment including a curved line, and the flexible bush is fitted and assembled to the opening edge. Are fitted in the linear portion of the opening edge, and the tip of this one end is inserted and fitted into a narrow portion formed in the opening edge.

The invention described in claim 1 or 3 has the following effects.

In general, when the flexible bush is fitted to a curved linear portion of the opening edge of the opening, the flexible bush has a large restoring force against bending deformation, so the fitting force to the opening edge is strong. On the other hand, when fitted to a straight portion of the opening edge, the restoring force hardly acts, so that the fitting force to the opening edge is weak.

According to the present invention, the one end of the flexible bush is fitted to the linear portion of the opening edge, and the other end portion and at least one of the vicinity thereof are fitted to the curved linear portion of the opening edge. Since the tip of the other end is configured to press the one end, the other end of the flexible bush, which has a strong fitting force to the opening edge, has a strong fitting force to the opening edge. Satisfactorily supports the one end side portion of which is weak. For this reason, it is possible to prevent the one end side of the flexible bush that fits into the linear portion of the opening edge from dropping off the opening edge, so that the flexible bush is surely not dropped onto the opening edge of the opening portion. Can be assembled.

Further, since the one end side of the flexible bush fitted to the linear portion of the opening edge is prevented from falling off, a linear portion is formed at a part of the opening edge where the flexible bush is fitted. An acute angle portion can be formed using the portion. By forming this acute angle portion, an opening having a wide effective width can be formed,
Interference between the flexible bush fitted to the opening edge of the opening and a component mounted adjacent to the opening can be prevented.

The invention according to claim 2 or 4 has the following operation.

One end of the flexible bush fitted into the linear portion of the opening edge in the opening has a weak fitting force, but the tip of this one end is inserted into a narrow portion formed at the opening edge. As a result, the one end of the flexible bush is favorably supported by the opening edge, and the flexible bush is prevented from falling off. Therefore, the flexible bush can be securely attached to the opening edge of the opening so as not to fall off.

Further, since the one end of the flexible bush fitted into the linear portion of the opening edge is prevented from falling off, a linear portion is formed at a part of the opening edge into which the flexible bush is fitted. An acute angle portion can be formed using the portion. By forming this acute angle portion, an opening having a wide effective width can be formed,
Interference between the flexible bush fitted to the opening edge of the opening and a component mounted adjacent to the opening can be prevented.

Furthermore, since the flexible bush is favorably supported by being inserted into and fitted into a narrow portion formed at the opening edge, the flexible bush is opened. By performing the above-mentioned insertion fitting in the first step of the work in the work of fitting to the opening edge of the part, it is possible to prevent the flexible bush from accidentally moving, and to maintain this state. Therefore, thereafter, the work of fitting the other part of the flexible bush to the opening edge becomes easy, and the workability can be improved.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a printer main body of a dot impact printer to which an embodiment of a recording apparatus according to the present invention is applied. FIG. 2 is a side sectional view of the printer main body of FIG.

The printer 10 as a recording apparatus shown in these figures records characters by striking a large number of recording wires of a recording head onto a sheet via an ink ribbon (both not shown) to record dots. It is a dot impact printer that prints images. This printer 10
A printer main body 11 as a recording apparatus main body, a push tractor unit 12 mounted on the printer main body 11,
An upper case (not shown) and a lower case 13 that respectively cover the upper and lower portions of the printer main body 11;
And a sheet supply guide 43 that is provided on the front side of the sheet feeding guide 1 and guides the cut sheet K.

The sheets include the cut sheet K cut to a predetermined length and a continuous sheet formed by connecting a plurality of sheets. The cut sheet K includes, for example, cut sheet, copy paper, cut film, and the like, and the continuous sheet includes continuous paper.

The printer body 11 includes a base frame 14, a main frame 15, a left side frame 16 and a right side frame 17 as body frames, a recording head 18 and a carriage 19 as a recording mechanism, and a sheet transport mechanism. Platen 20, sheet guide 2
5, a first transport roller 21, a second transport roller 22, a third transport roller 23, and a fourth transport roller 24.

Base frame 14 and main frame 1
The left side frame 16 and the right side frame 17 are erected and fixed to substantially both ends of 5. A lower carriage shaft 26 and an upper carriage shaft 27 are suspended between the left side frame 16 and the right side frame 17 at a predetermined distance in the vertical direction. Of these, the lower carriage shaft 2
6 is rotatably supported by the left side frame 16 and the right side frame 17. A platen 20 is bridged between the left side frame 16 and the right side frame 17 so as to be rotatable, and a seat guide 25 is fixedly provided.

The push tractor unit 12 shown in FIG.
Is to be supplied to the above-described sheet transport mechanism section having
It has a pair of left and right tractors 28. These tractors 2
Reference numeral 8 denotes a tractor drive pulley (not shown) rotatably supported on the tractor drive shaft 29 so as to be rotatable and axially slidable, and a tractor rotatably supported on the tractor guide shaft 30 and slidably in the axial direction. A tractor belt 31 is wound around a driven pulley (not shown) and includes a sheet holding lid 32.

The distance between the pair of tractors 28 can be adjusted according to the width of a continuous sheet (continuous paper) to be conveyed. Also, a plurality of pins 33 protruding from the entire outer periphery of the tractor belt 31 can be engaged with holes (not shown) formed on both sides in the width direction of the continuous sheet.

The sheet transport mechanism including the platen 20 is provided with a first transport roller 21 and a second
The transport roller 22 is located in front of the printer main body 11, and the third transport roller 23 and the fourth transport roller 24 are located in the printer main body 1.
1 are arranged on the rear side. Further, the first transport roller 21 and the second transport roller 22 are arranged vertically, and the third transport roller 23 and the fourth transport roller 24 are arranged vertically to form a pair.

The first transport roller 21 and the third transport roller 23 are disposed below the sheet guide 25 together with the platen 20, and the second transport roller 22 and the fourth transport roller 24 are disposed above the sheet guide 25. Is done. The upper portions of the platen 20, the first transport roller 21, and the third transport roller 23 project above the sheet guide 25. In addition, a sheet holding plate 37 that holds a sheet between the sheet guide 25 and the sheet guide 25 is provided on the front side of the printer body 11 in the sheet guide 25.

The platen 20, the first transport roller 21, the second
The transport roller 22, the third transport roller 23, and the fourth transport roller 24 are moved clockwise (C in FIG.
W) or counterclockwise (CCW). The tractor belt 31 of the push tractor unit 12 is similarly driven counterclockwise by the drive train wheel unit 34.

The drive wheel train 34 shown in FIG. 1 is installed on one of the left side frame 16 and the right side frame 17, for example, on the right side frame 17. The drive wheel train unit 34 includes a motor pinion 36 that is fixed to the drive shaft of a sheet supply motor 35 that can rotate forward or reverse, and is integrally rotated. The driving force from the motor pinion 36 is applied to the platen 20, the first transport roller 21, the second transport roller 22, and the third transport roller 2 via a wrapping transmission mechanism or a gear mechanism.
Third, the power can be transmitted to the fourth transport roller 24 and the push tractor unit 12.

The cut sheet K such as cut sheet or copy paper is
As shown in FIG. 2, after being manually supplied from the front side of the printer main body 11, the platen 20, the clockwise rotation of the first transport roller 21 and the third transport roller 23, and the second transport roller 22, the fourth transport Due to the counterclockwise rotation of the roller 24, the sheet is conveyed from the front to the rear of the printer main body 11 in the direction of arrow A, and the platen 20, the first conveyance roller 21, and the third conveyance roller 23 are rotated counterclockwise. In addition, by the clockwise rotation of the second transport roller 22 and the fourth transport roller 24, the printer body 11 is transported from the rear to the front in the arrow B direction.

On the other hand, a continuous sheet such as continuous paper is supplied from the rear side of the printer main body 11 in the direction of arrow B by the push tractor unit 12, and then the platen 20, the first transport roller 21, the second transport roller 22, 3 transport rollers 2
The same direction (arrow B direction) by the third and fourth transport rollers 24
Transported to

As a result, the cut sheet K and the continuous sheet are conveyed in the sub-scanning direction orthogonal to the main scanning direction of the carriage 19, which will be described later.

As shown in FIG. 1, the carriage 19 has a lower carriage shaft 26 and an upper carriage shaft 27.
And a recording head 18 is mounted. Lower carriage shaft 26 and upper carriage shaft 2
7 is arranged in parallel with the platen 20, the carriage 19 is provided with the platen 20, the lower carriage shaft 2
The main carriage 6 and the upper carriage shaft 27 are provided so as to be able to travel (scan) in the main scanning direction coincident with the axial direction.

The carriage 19 is connected to a timing belt 39 (FIG. 2) which is reciprocated by the forward or reverse rotation of the carriage drive motor 38. Accordingly, the carriage 19 is guided by the lower carriage shaft 26 and the upper carriage shaft 27 via the timing belt 39 by the forward or reverse rotation of the carriage drive motor 38, and is scanned leftward or rightward in FIG. 1 in the main scanning direction. You. Here, the carriage drive motor 38 is configured by, for example, a stepping motor together with the sheet supply motor 35.

As shown in FIG. 1, the carriage 19 is provided with a ribbon cassette mounting section 40, and a ribbon cassette (both not shown) containing an ink ribbon is mounted on the ribbon cassette mounting section 40. You. Further, the carriage 19 is provided with a ribbon mask holder 41 for protecting the ink ribbon of the ribbon cassette from a sheet (cut sheet or continuous sheet) conveyed in contact with the upper peripheral surface of the platen 21. The ink ribbon in the ribbon cassette is provided movably in front of the recording wire of the recording head 18 by a ribbon drive shaft 42 installed in the ribbon cassette mounting section 40.

The recording head 18 has a large number of recording wires (not shown), and the ink ribbon is located in front of the recording wires in the projecting direction as described above. Recording head 1
8, while being scanned in the main scanning direction together with the carriage 19, the recording wire is projected and hit against the ink ribbon,
The ink of the ink ribbon is attached to a sheet (cut sheet K or a continuous sheet) conveyed between the platen 20 (FIG. 2) and the recording head 18, and an image including characters is recorded on the sheet.

The recording operation by the recording head 18 is such that one line is recorded by the recording wire of the recording head 18 while the carriage 19 is scanned leftward or rightward in the main scanning direction, and every time this one line is recorded. If the sheet is a cut sheet K, the sheet transport mechanism (the platen 20, the first transport roller 21, the second transport roller 22,
When the sheet is a continuous sheet, the sheet conveying mechanism and the push tractor unit 12 respectively convey the sheet by a predetermined length (normal line spacing), and these operations are performed. Is repeated.

As shown in FIG. 2, a control board 45 is disposed on the lower rear side of the printer body 11, and the control board 45 and the recording head 18 are connected by a flexible flat cable 46 (FIG. 4). . A recording signal is transmitted from the control board 45 to the printer main body 11 via the flexible flat cable 46. Reference numeral 44 in FIG. 1 is a motor mounting bracket for installing and supporting the carriage drive motor 38.

The flexible flat cable 46
Is a right side frame 17 as shown in FIGS.
Is inserted through the opening 47 formed in the opening. This opening 47
The opening edge 48 of the two linear portions 4 facing in parallel
9A and the linear portion 49B are connected by using a curved linear portion 50, a curved linear portion 51, and a narrow portion 52.

The curved linear portion 51 is formed by curved lines having the same radius of curvature. In addition, the curved linear portion 50
Is formed by a curved line whose radius of curvature gradually increases from the linear portion 49B toward the linear portion 49A. Further, the narrow portion 52 includes a curved linear portion 50 and a linear portion 49.
A, which has a curved line having a curvature radius much smaller than that of the curved linear portion 51, and enables a flexible bush 53 described later to be held therebetween.

The angle α between the linear portion 49A and the curved linear portion 50 of the opening edge 48 is formed to be an acute angle, and an acute angle portion 59 is formed at the opening edge 48.
The width W of the opening 47 is set to a size that allows the wide flexible flat cable 46 to be sufficiently inserted by forming the acute angle portion 59. Further, since the acute angle portion 59 is formed, even when the width W of the opening 47 is set to be large, the adjacent other component 60 can be formed.
And a flexible bush 53 fitted to the opening edge 48 as described later.

As shown in FIG. 5, a flexible bush 53 is fitted and assembled to the opening edge 48 of the opening 47 thus formed. By attaching the flexible bush 53 to the opening edge 48 of the opening 47, the opening 4
The flexible flat cable 46 inserted into the inside 7 is prevented from directly contacting the opening edge 48, and wear and tear due to the opening edge 48 of the flexible flat cable 46 is prevented.

The flexible bush 53 is made of, for example, a resin, and as shown in FIG.
A large number of rectangular protrusions 55 are integrally provided to project from one side, and these protrusions 55 are arranged in two rows.
The projections 55 in each column sandwich the opening edge 48 of the opening 47 so that the flexible bush 53
7 is fitted to the opening edge 48. Further, the flexible bush 53 is configured to be able to bend and deform in the direction in which the projection 55 protrudes from the base portion 54 (the direction of the arrow H in FIG. 6B).

The flexible bush 5 configured as described above
3 is that one end side portion 56 has an opening edge 48 in the opening portion 47.
Of these, the linear portion 49A is fitted to the curved linear portion 50 side, and as the distance from the one end side portion 56 increases, the curved linear portion 51 side of the linear portion 49A, the curved linear portion 51, and the linear portion 49B are Curved linear part 51 side, linear part 49B
Are sequentially fitted to the curved linear portion 50 side, and the other end 57 and the vicinity 58 of the other end are fitted to the curved linear portion 50.
At this time, the tip 57P of the other end 57 of the flexible bush 53 presses the one end 56. Further, the distal end 56P of the one end side portion 56 of the flexible bush 53 is inserted and fitted into the narrow portion 52 of the opening edge 48.

As described above, the reason why the tip 57P of the other end 57 of the flexible bush 53 can press the one end 56 is as follows. Straight portion 4 of opening edge 48
9A, the restoring force due to bending deformation hardly acts and the fitting force is weak.
It is easy to fall off from A. On the other hand, the other end 57 and the vicinity 58 of the other end to be fitted into the curved linear portion 50 of the opening edge 48.
Is bent and deformed by the curved linear portion 50 to increase the restoring force, and the fitting force to the curved linear portion 50 is strong. For this reason, the front end 57P of the other end portion 57 having a strong fitting force presses the one end portion 56 to support the one end portion 56.

Also, as described above, the flexible bush 53
Is inserted into the narrow portion 52 of the opening edge 48 because the fitting force of the one end portion 56 fitted to the linear portion 49A of the opening edge 48 is weak.
This is for fixing the flexible bush 53 to the opening edge 48 in the first step in the operation of fitting the flexible bush 53 to the opening edge 48.
This is for maintaining the state fitted to 9A.

In the operation of fitting the flexible bush 53 to the opening edge 48 of the opening 47 of the right side frame 17 as described above, first, one end 56 of the flexible bush 53 is assembled. The flexible bushing 53 is fixed to the opening edge 48 by inserting the leading end 56P of the above into the narrow portion 52 of the opening edge 48. Next, one end 56 of the flexible bush 53 is connected to the linear portion 49A of the opening edge 48.
The flexible bush 53 is sequentially fitted to the opening edge 48 from the one end 56 to the other end 57. Finally, the other end 57 and the vicinity 58 of the other end of the flexible bush 53 are fitted to the curved linear portion 50 of the opening edge 48, and the tip 57P of the other end 57 is connected to the one end 56. To complete the assembly of the flexible bush 53.

Therefore, according to the above embodiment, the following effects are obtained.

When the flexible bush 53 is fitted into the curved linear portion 50 or the curved linear portion 51 of the opening edge 48 of the opening 47, the opening edge of the flexible bush 53 has a large restoring force against bending deformation. When the fitting force to the opening edge 48 is strong and the fitting is made to the straight portion 49A or 49B of the opening edge 48, the restoring force hardly acts, so the fitting force to the opening edge 48 is weak. In the above embodiment, the flexible bush 53 has one end 56 fitted into the linear portion 49A of the opening edge 48, the other end 57 and the vicinity 58 of the other end.
Is fitted to the curved linear portion 50 of the opening edge 48, and the tip 57 P of the other end 57 is configured to press the one end 56. The other end 57 having a strong fitting force to the opening 48 favorably supports the one end 56 having a weak fitting force to the opening edge 48. For this reason, the one end 56 of the flexible bush 53 fitted into the linear portion 49A of the opening edge 48 can be prevented from dropping from the opening edge 48, so that the opening edge 4 of the opening 47 can be prevented.
8, the flexible bush 53 can be securely attached so as not to fall off.

The one end 56 of the flexible bush 53 fitted into the linear portion 49A of the opening edge 48 in the opening 47 has a weak fitting force.
Is inserted and fitted into the narrow portion 52 formed on the opening edge 48, so that the one end 56 of the flexible bush 53 is favorably supported by the opening edge 48 and is prevented from falling off. You. Therefore, the flexible bush 53 can be securely attached to the opening edge 48 of the opening 47 so as not to fall off.

As described above, since the one end 56 of the flexible bush 53 fitted to the linear portion 49A of the opening edge 48 of the opening 47 is prevented from falling off,
A part of the opening edge 48 into which the flexible bush 53 is fitted,
The acute angle portion 59 can be formed using the linear portion 49A. By forming the acute angle portion 59, the opening 47 having a wide effective width can be formed, and the flexible bush 53 fitted to the opening edge 48 of the opening 47, and the opening 4
7 can be prevented from interfering with another component 60 mounted adjacent to the component 7.

The flexible bush 53 is satisfactorily supported by the distal end 56P of the one end portion 56 being inserted and fitted into the narrow portion 52 formed on the opening edge 48. In the operation of fitting the 53 to the opening edge 48 of the opening 47, by performing the above-described insertion fitting in the first step of the operation, it is possible to prevent the flexible bush 53 from inadvertently moving, It can be fixed and can keep this state. Accordingly, thereafter, the operation of fitting the other portion of the flexible bush 53 to the opening edge 48 becomes easy, and the workability can be improved.

As described above, the present invention has been described based on the above embodiment, but the present invention is not limited to this.

For example, in the above-described embodiment, with the flexible bush 53 fitted into the opening edge 48 of the opening 47, the tip 56 P of the one end 56 of the flexible bush 53 is The distal end 57P of the other end 57 of the flexible bush 53 is inserted into the narrow portion 52 and
Although the pressing of the tip 6 has been described, any one of the insertion fitting of the tip 56P and the pressing of the tip 57P may be performed.

Further, in the above embodiment, the curved linear portion 50 at the opening edge 48 of the opening 47 is constituted by curved lines having different radii of curvature, and the other end 57 and the other end 57 of the flexible bush 53 are formed. The vicinity 58 of the side portion corresponds to the curved linear portion 50.
The curved linear portion 61 corresponding to the curved linear portion 50 has a curved line 62 continuous with the linear portion 49B as shown by a two-dot chain line in FIG. A straight line 63 continuous with the narrow portion 52 may be configured to be continuous with each other. At this time, the other end 57 of the flexible bush 53 is fitted to the straight line 63 of the curved linear portion 61, and the vicinity 58 of the other end is fitted to the curved line 62 of the curved linear portion 61. In this case, since the fitting force when the vicinity 58 of the other end portion is fitted to the curved line 62 is strong, the one end portion 56 is favorably pressed by the tip 57P of the other end portion 57.

Further, instead of the curved linear portion 50 of the present embodiment, a curved linear portion 64 corresponding to the curved linear portion 50 is formed as shown by a broken line in FIG.
And a curved line 6 continuous with the narrow portion 52.
6 and 6 may be mutually continuous. At this time, the other end 57 of the flexible bush 53 is fitted to the curved line 66 of the curved linear portion 64, and the vicinity 58 of the other end is fitted to the straight line 65 of the curved linear portion 64. The other end 5
Since the fitting force when fitting 7 to the curved line 66 is strong, the one end portion 56 is favorably pressed by the tip 57P of the other end portion 57.

Further, in the above-described embodiment, the opening 47 is formed in the right side frame 17 and the flexible bush 53 is attached to the opening edge 48 of the opening 47. The present invention can also be applied to a case where the flexible bush 53 is fitted and assembled to the opening edge of the opening formed in another frame (for example, the left side frame 16, the main frame 15, etc.).

[0060]

According to the structure for assembling a flexible bush according to the first aspect of the present invention, an opening having an opening edge is formed in a plate-like body, and the opening edge is formed by two opposed straight lines. Are connected using a line segment including a curved line, and in the flexible bush mounting structure in which a flexible bush is fitted to and assembled with the opening edge, the flexible bush has one end side. Part is fitted to the linear portion of the opening edge, at least one of the other end and its vicinity is fitted to the curved linear portion of the opening edge, and the tip of the other end is the one end Since the flexible bush is configured to be pressed, the flexible bush can be securely attached to the opening edge of the opening so as not to fall off.

According to the recording apparatus of the third aspect, the recording apparatus has a recording apparatus main body on which a recording head having a plurality of recording wires is mounted on a carriage that can travel along a platen. The wire is protruded toward the platen to record an image on a sheet conveyed between the recording head and the platen, and an opening having an opening edge is formed in a frame of the recording apparatus main body. The opening edge has a shape in which two opposing straight lines are connected by using a line segment including a curved line. In the recording apparatus in which a flexible bush is fitted and assembled to the opening edge, One end of the bush is fitted to the linear portion of the opening edge, and at least one of the other end and its vicinity is fitted to the curved linear portion of the opening edge. But the one end side Since configured to press,
The flexible bush can be securely attached to the opening edge of the opening so as not to fall off.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a printer main body of a dot impact printer to which an embodiment of a recording apparatus according to the present invention is applied.

FIG. 2 is a side sectional view showing the printer main body of FIG.

FIG. 3 is a perspective view showing a side frame and the like in FIG. 1;

FIG. 4 is a front view showing a part of the right side frame of FIG. 3;

FIG. 5 is a front view showing a state in which a flexible bush is mounted on an opening of the right side frame of FIG. 4;

6A and 6B show the flexible bush of FIG. 5, wherein FIG. 6A is a perspective view and FIG. 6B is a side view.

FIG. 7 is a front view showing a right side frame together with a flexible bush in a conventional recording apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Printer (recording apparatus) 11 Printer main body (recording apparatus main body) 17 Right side frame 18 Recording head 19 Carriage 20 Platen 47 Opening part 48 Opening edge 49A, 49B Linear part of opening edge 50, 51 Curved linear part of opening edge 52 Narrow portion of opening edge 53 Flexible bush 56 One end side of flexible bush 57 Other end side of flexible bush 56P Tip of one end side 57P Tip of other end side 58 Other than flexible bush Near end side 59 Sharp corner K cut sheet

Claims (4)

[Claims] An opening having an opening edge is formed in a plate-like body, and the opening edge is shaped to connect two opposing straight lines using a line segment including a curved line. In the flexible bush assembling structure in which the flexible bush is fitted and assembled, the flexible bush has one end side fitted into the linear portion of the opening edge and the other end side and its vicinity. Characterized in that at least one of the ends is fitted into the curved linear portion of the opening edge, and the tip of the other end is configured to press against the one end. . 2. An opening having an opening edge is formed in a plate-like body, and the opening edge has a shape connecting two opposing straight lines using a line segment including a curved line. In the assembling structure of the flexible bush for fitting and assembling the flexible bush, the flexible bush has one end side fitted into the linear portion of the opening edge, and the tip of the one end side is A flexible bush assembling structure, wherein the flexible bush is inserted and fitted into a narrow portion formed at the opening edge. 3. A recording apparatus main body on which a recording head provided with a plurality of recording wires is mounted on a carriage which can travel along a platen, and wherein the recording wires are caused to protrude toward the platen, and An image is recorded on a sheet conveyed between a recording head and a platen. An opening having an opening edge is formed in a frame of the recording apparatus main body. The flexible bush has a shape in which one end is formed in a straight line with the opening edge. At least one of the other end and the vicinity thereof is fitted to the curved linear portion of the opening edge, and the tip of the other end is configured to press the one end. Note characterized by the fact that Recording device. 4. A recording apparatus main body on which a recording head provided with a plurality of recording wires is mounted on a carriage that can travel along a platen, and the recording wires are caused to protrude toward the platen to perform the operation. An image is recorded on a sheet conveyed between a recording head and a platen. An opening having an opening edge is formed in a frame of the recording apparatus main body. The flexible bush has a shape in which one end is formed in a straight line with the opening edge. A recording device, wherein the recording medium is fitted to a portion of the recording medium, and a front end of the one end portion is inserted and fitted into a narrow portion formed at the opening edge.