JP2008036898A - Cover structure, control device and electronic apparatus - Google Patents

Abstract

A cover structure capable of reducing the size of an apparatus main body including a recording unit and a control unit and preventing foreign matter from entering the control unit from the recording unit, and a control device including the cover structure An electronic device provided with the control device is provided.
A cover member 10 is provided above a recording unit that discharges and records a recording material onto a recording medium and covers at least a control unit 140 that controls recording of the recording unit. As a result, in the case of a configuration in which a partition wall is provided between the conventional recording unit and the control unit, the arrangement of the control unit is limited. Therefore, the size of the depth direction can be reduced by disposing the control unit above the recording unit. Furthermore, it is possible to prevent foreign matter from entering the control unit from the recording unit.
[Selection] Figure 3

Description

  The present invention relates to a cover structure including a cover member that covers at least a control unit that controls recording of a recording unit, a control device including the cover structure, and an electronic apparatus including the control device.

  In an ink jet recording apparatus which is one of electronic devices, an ink discharge head controlled by a print control circuit discharges and records ink while reciprocating in a recording area. The print control circuit is disposed on the front side of the apparatus main body, and the ink discharge head is disposed on the back side of the apparatus main body. A partition wall is provided between the print control circuit and the ink discharge head so that ink mist generated during operation of the ink discharge head does not enter the print control circuit side (see Patent Document 1).

JP-A-7-17031

  In the conventional ink jet recording apparatus described above, the print control circuit is disposed on the front side of the apparatus main body, and the ink discharge head is disposed on the back side of the apparatus main body, so that the size of the apparatus main body in the depth direction is increased. Therefore, when setting this ink jet recording apparatus, a large installation space must be secured.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to make it possible to make the apparatus main body including the recording unit and the control unit compact, and in particular to prevent foreign matter from the recording unit to the control unit. It is an object to provide a cover structure that can prevent the intrusion of the battery, a control device including the cover structure, and an electronic device including the control device.

  In order to achieve the above object, in the cover structure of the present invention, a cover member that is disposed above a recording unit that records by discharging a recording material onto a recording medium and covers at least a control unit that controls recording of the recording unit is provided. It is characterized by having prepared. Thereby, in the case of a configuration in which a partition wall is provided between the conventional recording unit and the control unit, the arrangement of the control unit is limited, but in the case of a cover member that covers the control unit itself, the degree of freedom of arrangement of the control unit is increased. Therefore, it is possible to reduce the size in the depth direction by arranging the control unit above the recording unit. Further, it is possible to prevent foreign matter from entering the control unit, for example, mist-like recording material from the recording unit.

  In addition, the cover member is in communication with a heat radiating hole provided in the housing. As a result, the air whose temperature has risen due to the heat generated by the electronic component mounted on the board of the control unit can be discharged from the inside of the housing to the outside, so that overheating of the electronic component can be suppressed. In addition, the heat radiating hole is communicated only with the inside of the cover member. Thereby, it is possible to further prevent leakage of foreign matter to the outside of the housing through the heat radiating hole, for example, leakage of mist of the recording material from the recording portion.

  In addition, the cover member includes a covering portion that covers at least a bottom surface and one side surface of the substrate of the control unit. As a result, it is possible to arrange the substrate at one upper end of the housing and cover the substrate substantially completely with the cover portion of the cover member and the housing. It is possible to increase the space efficiency in the housing. Furthermore, it is possible to prevent a relatively high temperature sheet metal attached to the lower part of the substrate from being directly touched. Furthermore, since this sheet metal can be extended to the heat radiation hole, the heat radiation effect can be enhanced.

  The cover member may include a communication portion that communicates with a heat radiation hole provided in the housing on the other side surface of the substrate. Thereby, since a communication part can be formed short, cover member itself can be reduced in size. Further, the cover member is arranged in the vicinity of the scanning area of the recording head of the recording unit. As a result, the control unit can be disposed as close as possible to the recording unit, so that the space efficiency in the housing can be improved.

  In order to achieve the above object, a control device of the present invention is characterized by including a control unit having each of the above cover structures. In order to achieve the above object, an electronic apparatus according to the present invention includes the above control device. Thereby, it is possible to provide the control apparatus or electronic device which has said each effect.

  Embodiments of the present invention will be described with reference to the drawings. The embodiments described below do not limit the invention according to the claims, and all the combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. Absent.

  FIG. 1 is a perspective view showing the entire external configuration of a recording apparatus that is an electronic apparatus having a cover structure according to an embodiment of the present invention. This recording apparatus is an ink jet printer 100 and records on, for example, business cards, cards, L / 2L size, postcards, six cuts, and JIS standard A6 to A4 size sheets (recording medium). Has features that can be. The ink jet printer 100 is entirely covered with a substantially rectangular parallelepiped housing 101. The upper opening of the housing 101 is covered with a housing cover 102 that can be freely opened and closed. The housing cover 102 is attached so as to be rotatable in the direction of the arrow a in the figure around the rotation axis at the rear end. By opening the housing cover 102, the user can easily perform ink cartridge replacement work, internal mechanism maintenance work, and the like. An operation unit 110 is disposed on the front side of the upper surface of the housing 101, a paper feeding unit 120 is disposed on the rear side of the upper surface, and a paper discharge unit 130 is disposed on the front side. Inside the housing 101, a control unit 140 (see FIG. 3 and the like) including the cover member 10 (see FIG. 3 and the like) constituting the cover structure of the present embodiment, a recording unit and a paper transport unit (not shown), and the like are arranged. It is installed.

  The operation unit 110 is provided with a push button type power system and an operation system switch 111. The paper feed unit 120 includes a paper support 122 having both a function of opening and closing a paper feed port 121 that is opened upward in a rectangular shape and a function of supporting one or a plurality of papers to be fed. The paper support 122 is attached so as to be rotatable in the direction of the arrow b shown in the figure around the rotation shaft at the rear end. When the user uses or does not use the inkjet printer 100, the user can open and close the paper support 122 by placing his / her fingers on both sides of the paper support 122, so that the user can easily insert and feed paper. Intrusion of dust into the paper mouth 121 can be prevented.

  The paper discharge unit 130 has a function of opening and closing a paper discharge port 131 that opens in a rectangular shape toward the front, and a function of covering a stacker (not shown) that stacks one or a plurality of paper to be discharged provided inside. A cover stacker 132 is also provided. The cover stacker 132 is attached so as to be rotatable in the direction of the arrow c in the figure around the rotation axis at the lower end. When the user uses or does not use the ink jet printer 100, the user can open and close the cover stacker 132 by placing his / her finger on the top of the cover stacker 132. Intrusion of dust into 131 can be prevented. Further, since the recorded paper is always discharged from the front side, the user can easily take out the paper.

  FIG. 2 is a perspective view showing a state where the housing cover 102 of the ink jet printer 100 is opened. The housing 101 is divided into a front housing 101a, side housings 101b and 101c, and a middle housing 101d. The front housing 101a and the side housings 101b and 101c constitute an exterior, and the middle housing 101d is disposed inside the front housing 101a and the side housings 101b and 101c to constitute an interior. A strip-shaped heat radiation hole 101ba is formed in the approximate center of the side housing 101b from the back side to the front side. Although not shown, the side housing 101c side is configured in the same manner. A plurality of circular heat radiation holes 101 dc and 101 dd arranged in a grid pattern are formed on the left side of the side surface portion 101 da and the upper surface portion 101 db of the middle housing 101 d as seen through the heat radiation hole 101 ba of the side housing 101 b. A control unit 140 (see FIG. 3 and the like) including the cover member 10 (see FIG. 3 and the like) constituting the cover structure of the present embodiment is disposed below the heat radiation hole 101dd in the upper surface portion 101db of the middle housing 101d. Further, a recording unit and a paper transport unit (not shown) are disposed below the upper surface 101db of the middle housing 101d.

  3 is an exploded perspective view of the middle housing 101d, the control unit 140, and the cover member 10. FIG. 4 is a perspective view when the cover member 10 is attached to the control unit 140. FIG. The control unit 140 includes a main board 141 that constitutes a printer controller. The main substrate 141 is mounted with a sheet metal 143 on which a control element such as a CPU, ROM, RAM, ASIC or the like, a storage element, and other various circuit elements (hereinafter referred to as electronic components) 142 are mounted and which serves as a heat dissipation and electromagnetic shield. It has been unitized. The unitized main board (hereinafter, referred to as a unit board) 141 is a heat radiating hole in the upper surface 101db of the middle housing 101d on the upper left side in FIG. It is horizontally arranged below 101dd.

  Here, the recording unit discharges ink droplets (recording material) onto a carriage that reciprocates in the main scanning direction below the middle housing 101d and a sheet that is mounted on the carriage and conveyed in the sub-scanning direction. A recording head for recording is provided. Since the ink droplets ejected from the recording head have recently become minute dots, an ink mist called satellite may be emitted. The ink mist floats in the middle housing 101d, and may rise by the reciprocating movement of the carriage and adhere to the unit substrate 141 and the like. And when ink mist adheres to the connection terminal and wiring of the unit substrate 141, there is a possibility that a problem such as a short circuit may occur. Therefore, the unit substrate 141 is covered with the cover member 10 to prevent adhesion of foreign matters to the unit substrate 141, particularly adhesion of ink mist, dust, dust and the like.

  The cover member 10 includes a substantially rectangular bottom surface covering portion (covering portion) 11 that covers the bottom surface 141a shown in FIG. 3 of the unit substrate 141, and a substantially rectangular side surface that covers the right side surface 141b of the unit substrate 141 shown in FIG. A covering portion (covering portion) 12 and a substantially rectangular heat radiation hole communication portion (communication portion) 13 communicating with the heat radiation hole 101dc of the side surface portion 101da of the middle housing 101d are provided. 3 so that the side surface covering portion 12 protrudes upward at the right end of the bottom surface covering portion 11 shown in FIG. 3, and the heat radiation hole communicating portion 13 protrudes downward at the right end of the bottom surface covering portion 11 shown in FIG. It is erected integrally. The heat radiation hole communicating portion 13 forms a space portion 13a communicating with the heat radiation hole 101dc between the side surface portion 101da of the middle housing 101d.

  As shown in FIG. 4, the cover member 10 having such a configuration has the bottom surface covering portion 11 attached to the bottom surface 141 a of the unit substrate 141 with screws or the like. And the unit board | substrate 141 with which the cover member 10 was attached is horizontally arrange | positioned under the thermal radiation hole 101dd in the upper surface part 101db of the middle housing 101d. As a result, in the case of an ink jet printer in which a partition wall is provided between the conventional recording unit and the control unit, the arrangement of the control unit is limited, but in the case of the cover member 10 covering the control unit 140 itself of the present embodiment, the control is performed. Since the degree of freedom of arrangement of the unit 140 is increased, the control unit 140 can be arranged above the recording unit to reduce the size of the printer body in the depth direction, and the control unit 140 can be arranged on the upper side of the middle housing 101d. The space efficiency in the middle housing 101d can be increased by arranging at the end. Further, it can be prevented that the relatively high temperature sheet metal 143 attached to the lower portion of the unit substrate 141 is directly touched. Further, the heat radiation effect can be enhanced by extending the sheet metal 143 to the heat radiation hole 101dc of the side surface portion 101da of the middle housing 101d. In addition, the bottom surface 141a of the unit substrate 141 may use a material having high thermal conductivity such as aluminum in order to enhance the heat dissipation effect. Further, since the heat radiating hole communicating portion 13 is provided close to the heat radiating hole 101dc of the side surface portion 101da of the middle housing 101d, the space portion 13a communicating with the heat radiating hole 101dc can be formed short, and the heat radiating hole communicating portion. 13 itself can be reduced in size.

  FIG. 5 is a cross-sectional view of the control unit 140 and its periphery. In the unit substrate 141, the illustrated bottom surface 141 a is covered with the bottom surface covering portion 11 of the cover member 10, and the illustrated right side surface 141 b is covered with the side surface covering portion 12 of the cover member 10. Further, the unit substrate 141 has an upper surface 141c shown in the figure covered with an upper surface part 101db of the middle housing 101d, a left side surface 141d shown in the figure covered with a side part 101da of the middle housing 101d, and a front surface 141e covered with a front housing 101a (not shown). The back surface 141f is covered with the back surface portion 101de of the middle housing 101d. Therefore, even if the ink mist IM floats in the middle housing 101d and rises due to the reciprocating movement of the carriage, the unit substrate 141 is covered with the cover member 10, the middle housing 101d, and the front housing 101a. Can be prevented from adhering to the surface.

  Further, since the heat radiating hole communicating portion 13 communicates with the heat radiating hole 101 dc of the side surface portion 101 da of the middle housing 101 d, the air whose temperature has risen due to heat generated by the electronic component 142 mounted on the unit substrate 141 is removed from the inside of the cover member 10. From the heat radiation hole 101dc to the outside of the housing 101 through the space 13a, the overheating of the electronic component 142 can be suppressed. Further, since the heat radiation hole 101dc of the side surface portion 101da of the middle housing 101d communicates only with the inside of the heat radiation hole communication portion 13, leakage of foreign matters to the outside of the housing 101 through the heat radiation hole 101dc, particularly from the recording portion. Ink mist leakage can be prevented. Further, since the cover member 10 is disposed in the vicinity of the scanning area of the recording head of the recording unit, the control unit 140 can be disposed as close as possible to the recording unit, and space efficiency in the housing 101 is improved. be able to.

  As long as the electronic device has a cover structure, it can be applied to general electronic devices including a recording device such as a facsimile device, a copy device, and a scanner.

1 is a perspective view illustrating an overall appearance configuration of a recording apparatus that is an electronic apparatus including a cover structure according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state where a housing cover of the printer of FIG. 1 is opened. It is a disassembled perspective view of the middle housing of FIG. 2, a control part, and a cover structure. It is a perspective view which shows the state which attached the cover structure to the control part of FIG. It is sectional drawing of the control part of the printer of FIG. 1, and its periphery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cover member, 11 Bottom surface covering part, 12 Side surface covering part, 13 Heat radiation hole communication part, 13a Space part, 100 Inkjet printer, 101 housing, 101a Front housing, 101b, 101c Side housing, 101ba Heat radiation hole, 101d Middle housing, 101da side surface, 101db upper surface, 101dc, 101dd heat dissipation hole, 101de rear surface, 102 housing cover, 110 operation unit, 120 paper feeding unit, 130 paper ejection unit, 140 control unit, 141 main board (unit board), 143 sheet metal

Claims (8)

A cover structure comprising a cover member that is disposed above a recording unit that discharges and records a recording material onto a recording medium and covers at least a control unit that controls recording of the recording unit. The cover structure according to claim 1, wherein the cover member communicates with a heat dissipation hole provided in the housing. The cover structure according to claim 2, wherein the heat radiation hole communicates only with the inside of the cover member. The cover structure according to claim 1, wherein the cover member includes a covering portion that covers at least a bottom surface and one side surface of the substrate of the control unit. The cover structure according to claim 4, wherein the cover member includes a communication portion that communicates with a heat radiating hole provided in the housing on the other side surface of the substrate. The cover structure according to claim 1, wherein the cover member is disposed in the vicinity of a scanning area of a recording head of the recording unit. The control apparatus provided with the control part which has the cover structure as described in any one of Claims 1-6. An electronic apparatus comprising the control device according to claim 7.

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