JP2012042691A - Structure for attaching fan motor to housing, and image forming device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for attaching a fan motor to a housing that achieves keeping of strength of a louver and eliminates a problem of space saving, and provide an image forming device.SOLUTION: A finger guard shaped section 17 is provided to a stay member 16 that connects between side plates 13 and 14 arranged in parallel to each other for constituting the housing of an image forming device, and the fan motor is installed inside the finger guard shaped section 17. The finger guard shaped section 17 has slit shaped openings with a length direction being in a compression direction of the stay member 16, so as to secure compression strength of the stay member 16, and to eliminate the necessity of a protection member only for preventing interference to the fan motor. In addition, a fan motor 18 is attached to the stay member 16, which eliminates the necessity of a bracket exclusive for the fan motor so as to reduce the cost.

Description

  The present invention relates to a fan motor mounting structure to a housing of an image forming apparatus such as a copying machine, a printer, a facsimile machine, or a multifunction machine thereof, and an image forming apparatus provided with the same.

  An image forming apparatus such as a copying machine is provided with a fan motor for intake and exhaust for cooling the inside of the apparatus. For this fan motor, in order to prevent touching the rotor blades, a touch-proof member made of sheet metal or metal wire or the like can be arranged, and a plastic outer cover can be provided with a louver shape. It is known to provide a touch prevention function.

  However, when the touch-proof member made of a conventional sheet metal or metal wire is exposed on the outer wall surface of the image forming apparatus, it does not feel unity with the apparatus and is not preferable in appearance. In addition, the shape of the louver provided on the resin exterior cover is preferable in terms of appearance, but it has low strength compared to sheet metal or metal wire, so it must be reinforced by adding ribs or the like to the back of the louver. Don't be. For this reason, since a space equal to or higher than the rib height is required, there is a problem in that downsizing of the image forming apparatus is hindered or the efficiency of the fan motor is reduced.

  Patent Document 1 aims to increase the strength of a louver provided on an exterior cover without reducing the efficiency of a fan motor. For the purpose of increasing the strength of a louver, a louver shape having a horizontal frame and a vertical frame is proposed. Disclosed. In this louver shape, rectifying members having a rectifying action are extended every other stage, and the strength can be maintained against an external force or impact without reducing the rectifying effect.

  However, with the structure disclosed in Patent Document 1, even though the point of maintaining the strength of the louver can be achieved, the problem of space saving cannot be solved.

  Therefore, in the present invention, it is possible to maintain the strength against external force and impact, prevent the fan motor from being touched without impairing the appearance, and reduce the size of the apparatus without reducing the efficiency of the fan motor. An object of the present invention is to provide a fan motor mounting structure of a housing that can be configured, and an image forming apparatus including the same.

  Of the fan motor mounting structure for a housing according to the present invention, the one according to claim 1 is a structure for mounting a fan motor to a housing composed of a pair of side plates parallel to each other and a stay member connecting between the side plates. The stay member has a finger guard shape portion having a plurality of slit-shaped openings, and a fan motor is disposed corresponding to the finger guard shape portion of the stay member.

  According to the second aspect of the present invention, in the fan motor mounting structure of the casing of the first aspect, the longitudinal direction of the opening of the finger guard-shaped portion is the compression direction of the stay.

  According to a third aspect of the present invention, in the fan motor mounting structure of the housing of the first aspect, the longitudinal direction of the opening of the finger guard-shaped portion is the longitudinal direction of the stay.

  According to the fourth aspect of the present invention, in the fan motor mounting structure of the housing according to any one of the first to third aspects, the throttle shape portion provided on the stay member is used as the throttle shape portion of the finger guard portion 17. The finger guard portion can be provided away from the fan motor as compared to the case where the aperture shape portion is not provided.

  An image forming apparatus according to claim 5 is an image forming apparatus provided with the fan motor mounting structure of the housing according to any one of claims 1 to 4, wherein the housing is configured to correspond to the finger guard. For the plurality of louver intervals and arrangement of the louver portions provided in the exterior cover, the frame of the opening of the finger guard shape portion overlaps each other, and at least the frame of the finger guard shape portion is formed thinner than the louver shape. It is characterized by.

  According to the sixth aspect of the present invention, in the image forming apparatus of the fifth aspect, in the finger guard shape portion and the louver shape portion, a longitudinal direction of the louver provided in the louver shape portion and a frame of the opening of the finger guard shape portion. It is characterized by providing a rib in the direction orthogonal to.

  According to the seventh aspect of the present invention, in the image forming apparatus according to the fifth or sixth aspect, the shape of the opening of the louver-shaped portion is the same as the shape of the opening of the case that houses the fan motor. And

  The fan motor mounting structure of the housing according to the present invention and the image forming apparatus including the same can maintain strength against external force and impact, and can be applied to the rotor blades of the fan motor without impairing the appearance. Touching can be prevented.

According to the fourth aspect of the present invention, the fan motor mounting structure of the housing and the image forming apparatus equipped with the same can reduce the size and space of the apparatus without reducing the efficiency of the fan motor.

The figure shown about the side structure of an image forming apparatus The figure which shows the internal structure of an image forming apparatus Sectional view showing the configuration of the louver finger guard The figure which expands and shows the principal part of FIG. Front view showing enlarged configuration of louver part 1 is a conceptual diagram illustrating a copying machine as an example of an image forming apparatus that is an object of the present invention.

  In the present invention, a finger guard-shaped portion is provided on a stay member that connects between side plates provided in parallel to each other, and a fan motor is installed on the inside thereof. The shape of the finger guard-shaped portion is such that the longitudinal direction of the opening is the compression direction of the stay, and the compressive strength of the stay can be secured. Further, by providing the finger guard shape portion, it is not necessary to attach a protective member only for preventing the fan motor from being touched. The stay member is usually made of metal because it is a member for preventing deformation of the main body of the image forming apparatus, that is, the housing, and is strong against external force or impact. Therefore, the fan motor is arranged near the exterior cover, the finger guard shape portion is disposed at a position overlapping the louver interval and the louver of the exterior cover to increase the opening area, and unnecessary metal parts are covered with the exterior cover. It is something to do.

  The finger guard shape portion is a portion having a shape in which the longitudinal direction of the opening portion is the compression direction of the stay, thereby securing the compression strength of the stay.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 6 conceptually depicts a copying machine as an example of an image forming apparatus so that the functions can be easily understood. 1 is a copying machine body, 2 is a document table, 3 is a document, 4 is a photoconductor, and 5 is a paper feed. , 6 is a transfer sheet, and 7 is a fixing unit. The image of the document 3 on the document table 2 is read, and a toner image is formed on the photosensitive member 4 by a developing device (not shown). The toner is transferred to the transfer paper 6 by a transfer means (not shown) and transferred by the fixing unit 7 The image is fixed on the transfer paper 6 and discharged outside the apparatus. Of course, the image forming apparatus targeted by the present invention includes an apparatus having a configuration other than the type shown in the figure.

<Example 1>
FIG. 1 is a diagram for explaining a side configuration of the image forming apparatus as described above according to the first embodiment of the present invention. For example, four louver-shaped portions 12 are provided on the exterior cover 11 constituting the side surface of the illustrated image forming apparatus.

  FIG. 2 is a perspective view showing a structure of an apparatus main body, that is, a housing of the image forming apparatus provided with the louver-shaped portion 12 of FIG. 2, the exterior cover 12 shown in FIG. 1 is removed to show the internal configuration. As shown in the figure, a pair of side plates, that is, a front side plate 13 and a rear side plate 14 are provided on the base 15 in parallel with each other, and the housing is supported by a stay member 16 stretched between the front side plate 13 and the rear side plate 14. Deformation is prevented.

  The stay member 16 is formed with a finger guard shape portion (hereinafter simply referred to as a finger guard portion) 17 formed of a plurality of slit-shaped openings, and a fan motor 18 is attached to the back side (see FIG. 3). ). The finger guard portion 17 is formed with slits so as to have an approximately circular shape corresponding to the louver-shaped portion 12, and the slits have a shape in which the longitudinal direction of the opening is the longitudinal direction of the stay member 16. It has a shape that receives a force compressed by the front side plate 13 and the rear side plate 14, that is, a horizontal direction in FIG. 1, and a horizontal direction that rises obliquely to the right in FIG. Is ensured not to drop too much.

  In addition, since the fan motor 18 is attached to the stay member 16, it is not necessary to provide a bracket dedicated to the fan motor, so that the cost can be reduced.

  The opening of the finger guard portion 17 of the stay member 16 has, for example, a width that the UL 1459 test finger cannot touch the rotating portion of the fan motor 18, and the periphery for forming the slit of the finger guard portion 17. The width of the frame is configured such that no defect occurs in the steel ball impact test defined in the safety standard.

  FIG. 3 is a cross-sectional view seen from the side in order to explain the configuration of the louver-shaped part 12 and the finger guard part 17 in detail. The louver part 12 provided on the exterior cover 11 has a shading door shape so that the material falling from above does not easily enter the inside of the housing, and the positions of the louver part 12 and the finger guard part 17 overlap each other. It is arranged as follows.

  The width of each louver constituting the louver portion 12 is the same as or slightly thicker than the width of the frame constituting the finger guard portion 17 so as to cover the metal finger guard portion 17. That is, since the metal portion (finger guard portion 17) cannot be seen, the configuration is favorable in appearance.

  FIG. 4 is a diagram for explaining the shape of the louver portion 12, and more specifically, a view of the louver portion 12 as seen from the front. As shown in the drawing, the louver portion 12 and the finger guard portion 17 are each provided with vertical ribs 19 orthogonal to the louver portion 12 to prevent the louver portion 12 from being deformed, and when the exterior cover 11 is assembled, The part 12 is prevented from entering the finger guard part 17.

  The width of the vertical rib 19 is desirably as narrow as possible so that the intake / exhaust efficiency does not decrease. Further, the shape of the opening of the outer cover 11 can be set to a preferable configuration in terms of appearance so as not to show an unnecessary sheet metal portion by matching the shape of the opening of the case of the fan motor 18.

<Example 2>
FIG. 5 is a sectional view showing Embodiment 2 of the present invention. In this embodiment, the stay member 16 is provided with an aperture shape portion. Specifically, the finger guard portion 17 is provided with a diaphragm shape portion 17a. In this way, the finger guard portion 17 can be separated from the fan motor 18 by, for example, about 5 mm, compared to the previous embodiment, preventing the generation of wind noise and improving the margin against externally applied force. To be able to.

  That is, with this configuration, the fan motor 18 can be installed in the vicinity of the exterior cover 11 without adding a high rib or the like to the louver portion 12 and improving the strength. It can be downsized. In addition, since the finger guard portion 17 made of metal keeps more strength against the external force, the width of the louver portion 2 can be minimized, so that the opening can be maximized and the suction portion can be maximized. It is possible to improve the exhaust efficiency.

1: Copier body 2: Document table 3: Document 4: Photoconductor 5: Paper feed unit 6: Transfer paper 7: Fixing unit 11: Exterior cover 12: Louver shape unit 13: Front plate 14: Rear plate 15: Base 16 : Stay member 17: Finger guard part (finger guard shape part)
17a: Drawing shape part of finger guard part 18: Fan motor 19: Vertical rib

JP 2006-275500 A

Claims (7)

A pair of side plates parallel to each other;
A stay member connecting the side plates;
It is a structure that attaches a fan motor to the casing configured with
The stay member has a finger guard shape portion having a plurality of slit-shaped openings,
A fan motor mounting structure for a housing, wherein a fan motor is disposed corresponding to the finger guard shape portion of the stay member. In the fan motor mounting structure of the housing of claim 1,
A fan motor mounting structure for a housing, wherein a longitudinal direction of the opening of the finger guard-shaped portion is a compression direction of the stay. In the fan motor mounting structure of the housing of claim 1,
A fan motor mounting structure for a housing, wherein a longitudinal direction of the opening of the finger guard-shaped portion is a longitudinal direction of the stay. In the fan motor attachment structure of the housing | casing in any one of Claim 1 to 3,
The diaphragm-shaped part provided on the stay member is used as the diaphragm-shaped part of the finger guard part 17 so that the finger guard part can be provided away from the fan motor as compared with the case where the diaphragm-shaped part is not provided. The fan motor mounting structure of the housing. In the image forming apparatus provided with the fan motor attachment structure of the housing | casing in any one of Claim 1 to 4,
For the plurality of louver intervals and arrangement of the louver portions provided on the exterior cover of the housing corresponding to the finger guard, the frame of the opening of the finger guard shape portion overlaps each other, and at least the finger guard shape portion of the finger guard shape portion An image forming apparatus, wherein a frame is formed to be thinner than the louver shape. The image forming apparatus according to claim 5.
An image forming apparatus comprising: a rib provided in the finger guard shape portion and the louver shape portion in a longitudinal direction of a louver provided in the louver shape portion and a direction perpendicular to the opening frame of the finger guard shape portion. The image forming apparatus according to claim 5 or 6,
An image forming apparatus, wherein the shape of the opening of the louver-shaped portion is the same as the shape of the opening of a case that houses the fan motor.