JP3740292B2 - Recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording apparatus that records an image on a recording medium, and more particularly to a recording apparatus having a configuration in which a chassis unit is attached to and detached from a base.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a recording apparatus having functions such as a printer, a copying machine, a facsimile, or a recording apparatus used as an output device of a multifunction machine or a workstation including a computer, a word processor, and the like is based on image information. Etc.) is recorded on a sheet-like recording medium.
[0003]
In the recording apparatus as described above, a recording unit for recording an image on a recording medium and a conveying unit for conveying the recording medium are provided in a chassis unit, and the chassis unit is attached to a base. Positioning of the chassis unit in the horizontal direction with respect to the base is performed by fitting a boss provided on the base into a hole provided in the chassis.
[0004]
Generally, the chassis unit is fixed to the base with screws or the like. When a screw is not used, a plurality of claw portions are provided on the base, and the chassis unit is fixed by the claw portions so that the chassis unit does not float from the base.
[0005]
Two claw portions are provided on the rear side of the base and one on each side. Each of these four claw portions has a slope, and each claw portion bends when the chassis unit is pushed into the base from substantially vertically above the base, and then after the chassis unit is placed in a predetermined position. The claw portion returns to its original state and is hooked on the chassis, so that the chassis unit is fixed to the base.
[0006]
In addition, when the two claw portions provided on the rear side of the base among the four claw portions are configured not to bend, the chassis unit is incorporated into the base from the diagonally upper side of the base. In this case, first, a part of the chassis unit is squeezed under each claw portion provided at the back of the base, and then each claw portion provided on the side of the base is bent. When the chassis unit is placed in a predetermined position, the side claws return to the original state, and the chassis unit is fixed to the base. In this case, the base is provided with a protrusion for positioning the chassis unit in the horizontal direction with respect to the base.
[0007]
[Problems to be solved by the invention]
However, in the prior art in which screws or the like are used to fix the chassis unit to the base, the number of parts increases, and a tool such as a screwdriver is required when the chassis unit is attached to or detached from the base. As a result, the assembly time is increased due to tightening or the like, which leads to an increase in the cost of the recording apparatus.
[0008]
In addition, in the conventional technology configured to incorporate the chassis unit into the base by providing four claws on the base and bending the four claws, the four claws If the parts are not bent at the same time, it becomes difficult to incorporate the chassis unit for reasons such as tilting. Also, when removing the chassis unit from the base for reasons such as maintenance of the chassis unit, the four claws must be bent at the same time, and it is difficult for one operator to remove the chassis unit from the base. There was a drawback of being.
[0009]
Furthermore, when the four claw parts are constituted by a rigid member so that the two claw parts provided behind the base do not bend, the chassis unit is based on a part of the chassis unit. It is incorporated into the base so as to be squeezed under the claw portion provided at the rear of the base. Therefore, when the chassis unit is attached to or detached from the base, the height of the protrusions is reduced to prevent the horizontal positioning protrusions of the chassis unit provided on the base and the chassis unit from interfering with each other. There was a need to form. Therefore, there is a drawback that the chassis unit may come off the base when a strong impact is applied to the recording apparatus by dropping or the like.
[0010]
The present invention has been made in view of the above problems, and a first object of the present invention is to provide a recording apparatus capable of easily attaching and detaching a chassis unit to and from a base.
[0011]
Furthermore, the second object of the present invention is to provide a recording apparatus that allows a single operator to easily attach and detach the chassis unit to and from the base.
[0012]
A third object of the present invention is to provide a recording apparatus in which the chassis unit does not come off the base even when an impact is applied to the recording apparatus.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a recording apparatus of the present invention comprises a chassis for attaching a conveying means for conveying a recording medium, and a recording means for recording an image on the recording medium conveyed by the conveying means, In the recording apparatus having a base to which the chassis is detachably attached, the base is provided with a protrusion for positioning the chassis in the horizontal direction with respect to the base, and the protrusion is provided on the chassis. A fitting hole is provided in which the fitting hole of the chassis is temporarily formed at a part of the tip of the protrusion when the chassis is attached to or detached from the base. is horizontal portion that is placed on the formation, on the base, a plurality of pawl members provided for fixing the chassis to the base, the protrusions previous cylindrical member A part of the conical portion formed on the base plate is removed to form the horizontal surface portion, and when the fitting hole of the chassis is fitted to the protruding portion of the base, the fitting is performed. Prior to this, the claw member is temporarily bent while the conical portion is inserted into the fitting hole and the portion of the chassis where the fitting hole is formed is placed on the horizontal surface portion. While moving the chassis toward the claw member and moving the fitting hole toward a position where the fitting hole is fitted to the protrusion, the portion of the chassis where the fitting hole is formed is separated from the horizontal surface portion. The chassis is configured to be hooked on the claw member when the fitting hole is detached and fitted into the protrusion .
[0014]
In the present invention, when the chassis is attached to the base, the chassis is first lowered vertically from above the base and incorporated into the base, and the portion of the chassis where the fitting hole is formed is placed on the horizontal surface of the projection. . Subsequently, the chassis is slightly slid in the horizontal direction and the protrusion is fitted into the fitting hole of the chassis, thereby positioning the chassis in the horizontal direction with respect to the base. Also, when removing the chassis from the base, first, the chassis is slightly slid in the direction opposite to the sliding direction described above, and the protruding portion is removed from the fitting hole, so that the chassis fitting hole is formed. On the horizontal surface of the protrusion. Subsequently, the chassis is lifted substantially vertically above the base, and the chassis is removed from the base.
[0015]
As described above, according to the present invention, the chassis unit can be attached to and detached from the base in a direction perpendicular to the base. Therefore, the height of the protrusion for positioning the chassis unit in the horizontal direction with respect to the base can be reduced. It can be taken sufficiently. As a result, even when a strong impact is applied to the recording apparatus due to dropping or the like, the chassis unit is prevented from being detached from the base.
[0016]
Further , the plurality of claw members are arranged so as to fix one end surface portion of the chassis and the other end surface portion opposite to the one end surface portion to the base, and at least each of the end surface portions. It is desirable that the claw member for fixing one side is configured to have flexibility.
[0017]
Accordingly, it is not necessary to use a tool such as a screwdriver when attaching / detaching the chassis unit to / from the base, and the attaching / detaching operation can be easily performed by one operator.
[0018]
Furthermore, it is preferable that the base is provided with a space for allowing the chassis to move in a horizontal direction when the chassis is attached to or detached from the base.
[0019]
Furthermore, it is preferable that at least one of the chassis and the base is provided with a vertical positioning means for positioning the chassis with respect to the base in a direction perpendicular to the base.
[0021]
Furthermore, the surface formed by removing the part of the conical portion and adjacent to the horizontal surface is an arcuate curved surface having a radius of curvature equal to or smaller than the radius of the cylindrical member. It is preferable that the structure is formed so as to be. Thereby, it is possible to place the portion where the fitting hole of the chassis is formed on the horizontal surface portion of the protrusion in a state where the conical portion is inserted into the fitting hole of the chassis.
[0022]
The recording unit may be an ink jet recording head that forms an image on the recording medium by ejecting ink from nozzles.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0024]
FIG. 1 is a perspective view showing an embodiment of a recording apparatus of the present invention.
[0025]
As shown in FIG. 1, the recording apparatus of the present embodiment includes a recording head (not shown) as recording means for recording an image on a recording medium (not shown), and transports the recording medium (not shown). A carriage 1 that can reciprocate in a direction (main scanning direction) perpendicular to the direction (sub-scanning direction), and a guide shaft 2 and a guide rail that guide and support the carriage 1 so that the carriage 1 can reciprocate in the main scanning direction. 3. Further, in this recording apparatus, a pulley 4 provided near one side end of the recording apparatus and a pulley (not shown) provided near the other side end of the recording apparatus and rotated by a carriage motor 6. An endless belt-like timing belt 5 is bridged between both pulleys. A part of the timing belt 5 is fixed to the carriage 1, and the carriage 1 is reciprocated in the main scanning direction by rotating the carriage motor 6.
[0026]
The recording head in this recording apparatus is a so-called inkjet recording head that performs recording by discharging ink from the ink discharge port of the nozzle, and the recording apparatus of the present embodiment scans the recording head in the main scanning direction, This is a serial type inkjet recording apparatus that performs recording by ejecting ink from an ink ejection port of a nozzle of a recording head while conveying a recording medium in the sub-scanning direction.
[0027]
Further, the recording apparatus is provided with an automatic paper feeder 7, and recording media (not shown) loaded on the paper feed tray 8 of the recording apparatus are recorded one by one by the automatic paper feeder 7. Supplied inside. The recording medium supplied to the inside of the recording apparatus is conveyed to an image recording area by a first conveying roller 9 and a first driven roller (not shown), and an image is recorded on the recording medium by a recording head. The recording medium on which image recording has been performed passes between the second driven roller 10 and a second transport roller (not shown) positioned below the second driven roller 10, and passes through the paper discharge port 11 to the recording device. It is discharged outside. These transport rollers, driven rollers, and the like constitute transport means for transporting the recording medium.
[0028]
Each component described above is attached to the chassis 12 to form a chassis unit 13. The chassis unit 13 is fixed to the base 14 of the recording apparatus.
[0029]
Next, the attachment / detachment structure of the chassis unit 13 with respect to the base 14 will be described with reference to FIGS.
[0030]
FIG. 2 is a perspective view showing the chassis unit and the base shown in FIG. 1 with the chassis unit attached to the base. However, in the figure, for ease of explanation, all the components attached to the chassis unit 13 are omitted, and only the chassis 12 is shown. 3 is a perspective view showing the base shown in FIG. 2 from the direction indicated by the arrow A with the right side of the base removed, and FIG. 4 is an arrow B showing the base shown in FIG. 2 with the right side of the base removed. FIG. 5 is a perspective view showing the base shown in FIG. 2 with the left side surface of the base removed, and a perspective view showing the base shown in FIG. 2 from the direction of the arrow C. FIG. 6 is a perspective view showing the base shown in FIG. FIG. 7 is a perspective view showing the claw portion shown in FIG. 3 and a protrusion provided in the vicinity thereof, and FIG. 8 is a plan view of the protrusion shown in FIG.
[0031]
3 to 6, reference numerals 15a, 15b, 15c, and 15d denote base-side height reference planes as vertical positioning means provided on the base 14, and reference numerals 16a, 16b, 16c, and 16d denote chassis 12 respectively. The chassis side height reference surface as a vertical direction positioning means provided in FIG. 4, 6, and 7, reference numeral 17 denotes a protrusion provided on the base 14 for positioning the chassis 12 in the horizontal direction. The protrusion 17 is fitted into fitting holes 18 a and 18 b provided in the chassis 12. A horizontal surface 17 a is formed on a part of the protrusion 17.
[0032]
As shown in FIG. 8, the protrusion 17 is formed in a shape in which a horizontal surface 17a is formed by removing a part of the conical portion 17d formed at the tip of the cylindrical member 17d. Further, the surface 17c adjacent to the horizontal surface 17a of the conical portion 17d formed in a partially removed state is an arcuate curved surface having a radius of curvature equal to or smaller than the radius of the cylindrical member 17b. Is formed. As a result, in a state where the conical portion 17d is inserted into the fitting holes 18a and 18b of the chassis 12, the portion where the fitting holes 18a and 18b of the chassis 12 are formed can be placed on the horizontal surface 17a of the protruding portion 17. It becomes possible.
[0033]
The base 14 is provided with claw portions 19a, 19b, 19c, and 19d that restrict the chassis 12 attached to the base 14 from moving upward. Of these four claw portions, the claw portions 19 a and 19 c fix the front end surface portion of the chassis 12 to the base 14, and the claw portions 19 b and 19 d fix the rear end surface portion of the chassis 12 to the base 14. In the present embodiment, at least the claw portions 19b and 19d among these claw portions are formed to have flexibility. On the other hand, bent portions 20a, 20b, 20c, and 20d are provided at portions of the chassis 12 that face the claw portions when the chassis 12 is attached to the base 14, respectively.
[0034]
Each of FIGS. 3 to 6 shows a state in which the chassis 12 is fixed to the base 14. The chassis-side height reference surfaces 16a, 16b, 16c, and 16d are in contact with the base-side height reference surfaces 15a, 15b, 15c, and 15d, respectively, and the chassis 12 is positioned with respect to the base 14 in a direction perpendicular to the base 14. Has been made. Each protrusion 17 is fitted in fitting holes 18a and 18b, respectively, so that the chassis 12 is positioned in the horizontal direction with respect to the base 14. Further, the chassis 12 can move upward because the bent portions 20a, 20b, 20c, and 20d of the chassis 12 are pressed by the claw portions 19a, 19b, 19c, and 19d provided on the base 14. It is regulated.
[0035]
Next, the attaching / detaching operation of the chassis 12 with respect to the base 14 will be described with reference to FIGS. 9 and 10. FIG. 9 is a diagram showing the chassis unit and base shown in FIG. 1 and the like in a state where a part of the chassis is placed on the horizontal surface of the protrusion, and FIG. 10 is a diagram showing the chassis unit and base shown in FIG. It is a figure shown in the state where the chassis was fixed to the base.
[0036]
When the chassis 12 is attached to the base 14, as shown in FIG. 9, the chassis 12 is lowered vertically from above the base 14 and incorporated into the base 14, and fitting holes 18 a and 18 b of the chassis 12 are formed. The portion is placed on the horizontal surface 17a of the protrusion 17 provided on the base. At this time, the bent portions 20a, 20b, 20c, and 20d of the chassis 12 are not hooked on the claw portions 19a, 19b, 19c, and 19d of the base 14.
[0037]
From this state, when the chassis 12 is slightly slid in the direction of the arrow X in the figure, the bent portions 20a and 20c of the chassis 12 go under the claw portions 19a and 19c of the base 14, and the bent portions 20b and 20d become the claw portions 19b. , 19d are bent in the direction indicated by the arrow Y and temporarily retracted, and then sunk under the claw portions 19b, 19d. Then, the protrusion 17 is fitted into the fitting holes 18a and 18b of the chassis 12, and the chassis 12 is fixed to the base 14 as shown in FIG.
[0038]
When removing the chassis 12 from the base 14, the projections 17 are fitted into the fitting holes 18a by pulling the rear (right side in the figure) of the chassis 12 upward while retracting the claws 19b and 19d in the direction of the arrow Z shown in FIG. , 18b, and the portion of the chassis 12 where the fitting hole is formed is placed on the horizontal surface 17a of the protrusion 17. Thereby, the state of the chassis 12 with respect to the base 14 becomes the state shown in FIG. From this state, the chassis 12 is easily detached from the base 14 by lifting the chassis 12 vertically upward.
[0039]
As described above, according to the present embodiment, the chassis unit can be attached to and detached from the base in a direction perpendicular to the base, so that the height of the protrusion for positioning the chassis unit in the horizontal direction with respect to the base is sufficiently high. It becomes possible to take. As a result, even when a strong impact is applied to the recording apparatus due to dropping or the like, the chassis unit can be prevented from being detached from the base.
[0040]
Furthermore, according to this embodiment, it is not necessary to use a tool such as a screwdriver when attaching / detaching the chassis unit to / from the base of the recording apparatus, and the attaching / detaching operation can be easily performed by a single operator.
[0041]
When the chassis 12 (chassis unit 13) is attached to or detached from the base 14, the chassis 12 can be moved horizontally by the amount that the bent portion of the chassis 12 can be retracted from the catch portion of the claw portion of the base 14. As described above, a movement space for the chassis 12 is provided in the base 14.
[0042]
【The invention's effect】
As described above , according to the recording apparatus of the present invention, the chassis unit can be attached to and detached from the base in a direction perpendicular to the base, so that the height of the protrusion can be sufficiently secured. As a result, even when a strong impact is applied to the recording apparatus due to dropping or the like, the chassis unit can be prevented from being detached from the base .
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a recording apparatus of the present invention.
FIG. 2 is a perspective view showing the chassis unit and the base shown in FIG. 1 in a state where the chassis unit is attached to the base.
3 is a perspective view showing the base shown in FIG. 2 from the direction of the arrow A in a state where the right side surface of the base is deleted. FIG.
4 is a perspective view showing the base shown in FIG. 2 from the direction of the arrow B in the state where the right side surface of the base is deleted. FIG.
5 is a perspective view showing the base shown in FIG. 2 from the direction of arrow C in the state in which the left side surface of the base is deleted. FIG.
6 is a perspective view showing the base shown in FIG. 2 from the direction of the arrow D in the state in which the left side surface of the base is deleted. FIG.
7 is a perspective view showing the claw portion shown in FIG. 3 and a protrusion provided in the vicinity thereof. FIG.
FIG. 8 is a plan view of the protrusion shown in FIG. 7 and the like.
FIG. 9 is a diagram showing the chassis unit and the base shown in FIG. 1 and the like in a state where a part of the chassis is placed on the horizontal surface of the protrusion.
FIG. 10 is a diagram showing the chassis unit and the base shown in FIG. 1 and the like in a state where the chassis is fixed to the base.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Carriage 2 Guide shaft 3 Guide rail 4 Pulley 5 Timing belt 6 Carriage motor 7 Automatic paper feeder 8 Paper feed tray 9 1st conveyance roller 10 2nd driven roller 11 Paper discharge port 12 Chassis 13 Chassis unit 14 Base 15a, 15b, 15c, 15d Base side height reference surface 16a, 16b, 16c, 16d Chassis side height reference surface 17 Projection part 17a Horizontal surface 17b, 17c Arc part 18a, 18b Fitting hole 19a, 19b, 19c, 19d Claw part 20a , 20b, 20c, 20d Bending part

Claims (6)

A recording apparatus comprising: a conveying unit that conveys a recording medium; a chassis for attaching a recording unit that records an image on the recording medium conveyed by the conveying unit; and a base to which the chassis is detachably attached. In
The base is provided with a projection for positioning the chassis in the horizontal direction with respect to the base, and the chassis is provided with a fitting hole into which the projection is fitted. A part of the tip is formed with a horizontal surface portion on which a portion of the chassis where the fitting hole is formed is temporarily mounted when the chassis is attached to or detached from the base .
The base includes a plurality of claw members for fixing the chassis to the base.
The protruding portion is formed in a shape in which a part of the conical portion formed at the tip of the cylindrical member is removed and the horizontal surface portion is configured,
When fitting the fitting hole of the chassis to the protrusion of the base, the fitting hole of the chassis is formed by inserting the conical part into the fitting hole prior to the fitting. With the portion being placed on the horizontal surface portion, while the claw member is temporarily bent, the fitting hole is in a position where the chassis is hooked to the projection portion in a direction in which the chassis is hooked on the claw member. When the portion of the chassis in which the fitting hole is formed is detached from the horizontal surface portion and the fitting hole is fitted into the protrusion, the chassis is caught by the claw member. It is comprised in the recording apparatus characterized by the above-mentioned. The plurality of claw members are disposed so as to fix one end surface portion of the chassis and the other end surface portion opposite to the one end surface portion to the base, and at least one of the end surface portions is fixed to the base. The recording apparatus according to claim 1 , wherein the claw member to be fixed is configured to have flexibility. The base A recording apparatus according to claim 1 or 2 space is provided in order to be able to move in a horizontal direction said chassis when removing or inserting the chassis relative to the base . The chassis and to the base of at least one hand, any one of claims 1-3 in which the vertical positioning means are provided for positioning of the chassis relative to the base in a direction perpendicular to the base The recording device described in 1. A surface formed by removing the part of the conical portion and adjacent to the horizontal surface is an arcuate curved surface having a radius of curvature equal to or less than the radius of the cylindrical member. The recording apparatus according to claim 1 , wherein the recording apparatus is formed as described above. It said recording means recording apparatus according to any one of claims 1 5 is an ink jet recording head for forming an image on the recording medium by ejecting ink from the nozzles.

Images