Frame structure

Abstract

The invention discloses a frame body structure. The frame body structure comprises a first frame; a second frame which is located on the lower side with respect to the first frame, has a handle part, and has an acting surface which extends in a direction intersecting the vertical direction and on which an external force applied to the handle part is applied; and an accommodating part which accommodates a substrate between the first frame and the second frame, and which has a portion that overlaps the active surface of the second frame in the vertical direction.

Description

Technical Field

[0001] The invention relates to a frame structure. Background Art

[0002] For example, Japanese Patent Gazette No. 2012-33801 discloses an electronic device frame structure, characterized in that the electronic device frame has a box-shaped shell and a non-combustible cover, the box-shaped shell is non-combustible and has an open top surface, the cover is a box-shaped cover with an open bottom surface, and is engaged with the shell in a manner covering the shell, the shell has at least one first partition standing up from the bottom surface of the shell and arranged in a manner roughly transverse to the bottom surface, the cover has at least one second partition hanging down from the top surface of the cover and arranged in a manner roughly transverse to the top surface, and the first and second partitions are arranged roughly parallel to each other with a tiny gap that hinders the passage of flames when the shell and the cover are engaged. Summary of the invention

[0003] Here, in a frame including two frames arranged to intersect the vertical direction, that is, the two frames are not in contact with each other in the vertical direction, when a load is applied to one frame in the vertical direction when the frame is lifted, the rigidity may be insufficient.

[0004] An object of the present invention is to ensure the rigidity of the frame body even without providing a new frame which is arranged in a manner intersecting the vertical direction and in contact with the two frames, when two frames which are arranged in a manner intersecting the vertical direction, i.e., two frames which are not in contact with each other in the vertical direction, bear load in the vertical direction.

[0005] According to a first aspect of the present invention, there is provided a frame structure comprising: a first frame; a second frame, which is located at a lower side relative to the first frame and has a handle portion, and has an action surface extending in a direction intersecting with a vertical direction for an external force input into the handle portion; and a housing portion, which accommodates a substrate located between the first frame and the second frame, and has a portion overlapping with the action surface of the second frame in the up and down directions.

[0006] According to a second aspect of the present invention, in the frame structure based on the first aspect, the handle portion is a recessed portion, which is located below the action surface of the second frame, and the upper inner surface of the inner surface formed by recessing toward the inner side of the second frame is a surface for guiding the user's fingers in the depth direction.

[0007] According to a third aspect of the present invention, in the frame structure according to the second aspect, an end portion of the recessed portion in the depth direction is located within a section corresponding to the overlapping portion.

[0008] According to a fourth aspect of the present invention, in the frame structure based on any one of the first to third aspects, when external force is input to the handle portion of the second frame, the accommodating portion transmits the external force received from the action surface to a predetermined portion of the overlapping portion to the first frame.

[0009] According to a fifth aspect of the present invention, in the frame structure according to the fourth aspect, when no external force is input to the handle portion, the predetermined portion is in a state of being separated from the action surface.

[0010] According to a sixth aspect of the present invention, in the frame structure according to any one of the first to fifth aspects, the second frame does not have a portion facing downward from the action surface.

[0011] According to a seventh aspect of the present invention, in the frame structure according to any one of the first to sixth aspects, the housing portion is formed of a non-combustible resin.

[0012] (Effect)

[0013] According to the first aspect, two frames are arranged in a manner intersecting with the vertical direction. When a frame that makes the two frames not contact each other in the vertical direction bears weight in the vertical direction, the rigidity of the frame can be ensured without setting up a new frame that is arranged in a manner intersecting with the vertical direction and in contact with the two frames.

[0014] According to the second aspect, the handle portion is a recessed portion located below the action surface of the second frame, and the upper inner surface of the inner surface formed by recessing toward the inner side of the second frame is a surface that guides the user's fingers in the depth direction. Compared with a case without such a structure, it is possible to suppress the concentration of load on the fingers of the user holding the handle portion.

[0015] According to the third aspect, the end portion of the recessed portion in the depth direction is located in the section corresponding to the overlapping portion, and the strength of the housing portion can be ensured compared to a case where such a structure is not provided.

[0016] According to the fourth aspect, when external force is input to the handle portion of the second frame, the accommodating portion transmits external force received from the action surface to a predetermined portion of the overlapping portion to the first frame, thereby ensuring the rigidity of the frame body compared to a case without such a structure.

[0017] According to the fifth aspect, when no external force is input to the handle portion, the predetermined portion is separated from the action surface, and the assembly workability can be improved compared to a case without such a structure.

[0018] According to the sixth aspect, the second frame does not have a portion extending downward from the action surface, and the internal space can be used more effectively than when such a structure is not provided.

[0019] According to the seventh aspect, the housing portion is formed of the non-combustible resin, and the fire resistance of the housing portion can be improved compared to a case where such a structure is not provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a diagram showing the overall structure of an image forming apparatus;

[0021] Figure 2 is a schematic perspective view partially showing a housing of an image forming apparatus;

[0022] Figure 3 is a schematic perspective view showing a state in which an outer member covering a substrate is mounted on a frame;

[0023] Figure 4 is a longitudinal sectional view including a lower part and an upper part;

[0024] Figure 5 yes Figure 4 A local enlarged view of region K;

[0025] Figure 6 1. It is a diagram for explaining the gap between the working surface of the lower member and the inner end of the inner member, (a) shows the case where the gap exists, and (b) shows the case where there is no gap;

[0026] Figure 7 It is a schematic diagram for explaining the support structure of the inner member. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will be described in detail below with reference to the drawings. In addition, the size, thickness, etc. of each part in the drawings referred to in the following description may be different from the actual size.

[0028] Figure 1 1 is a diagram showing the overall structure of the image forming apparatus 1. Figure 1 This is a diagram of the image forming apparatus 1 as viewed from the front side thereof.

[0029] The image forming apparatus 1 is provided with an image forming unit 10 , a paper feeding unit 20 , and a fixing unit 30 .

[0030] The image forming unit 10 forms a toner image on a sheet of paper P, which is an example of a recording material, using electrophotography. The sheet supply unit 20 supplies the sheet of paper P to the image forming unit 10 . The fixing unit 30 fixes the toner image, ie, the image, formed on the sheet of paper P by the image forming unit 10 .

[0031] The image forming section 10 includes a photosensitive drum 11 that rotates in the direction indicated by arrow A. The image forming section 10 also includes a charging roller 12 , an exposure device 13 , a developing device 14 , a transfer roller 15 , and a cleaning device 16 .

[0032] The photosensitive drum 11 is composed of a cylindrical body, and a photosensitive layer (not shown) is formed on the surface of the cylindrical body.

[0033] The charging roller 12 is composed of a conductive rubber roller or the like, and charges the photosensitive drum 11 .

[0034] The exposure device 13 irradiates the photosensitive drum 11 charged by the charging roller 12 with light from a light source such as a laser light source or an LED (Light Emitting Diode), thereby forming an electrostatic latent image on the surface of the photosensitive drum 11 .

[0035] The developing device 14 includes a developing roller 14A that causes toner to adhere to the surface of the photosensitive drum 11 and develops the electrostatic latent image formed on the photosensitive drum 11 with toner of a predetermined color. Thus, in the present embodiment, a toner image is formed on the surface of the photosensitive drum 11.

[0036] The developer is stored in the developing device 14. The developer of the present embodiment is composed of a magnetic carrier and a colored toner, and is a so-called two-component developer.

[0037] Furthermore, in the present embodiment, a developer accommodating container 19 is provided to accommodate the developer to be supplied to the developing device 14. In the present embodiment, new developer is supplied from the developer accommodating container 19 to the developing device 14 through a developer conveying path (not shown).

[0038] The transfer roller 15 is composed of a conductive rubber roller or the like.

[0039] In the present embodiment, the area where the transfer roller 15 and the photosensitive drum 11 face each other is a transfer portion T, and the toner image on the surface of the photosensitive drum 11 , that is, the toner image held by the photosensitive drum 11 , is transferred to the paper P being conveyed through the transfer portion T.

[0040] The cleaning device 16 is provided with a contact member 16A arranged to be in contact with the photosensitive drum 11 , and the cleaning device 16 removes attached matter such as toner on the photosensitive drum 11 .

[0041] In the present embodiment, the transfer roller 15 transfers the image to the paper P. However, the present invention is not limited thereto and the transfer roller 15 may transfer the image to an intermediate transfer belt (not shown).

[0042] The paper supply unit 20 is provided with a paper container 21 for storing the paper P and a feeding mechanism 22 for feeding the paper P from the paper container 21 .

[0043] Furthermore, in the present embodiment, a paper transport mechanism 23 is provided to transport the paper P fed out from the paper supply unit 20 via the transfer unit T and the fixing unit 30 .

[0044] The fixing section 30 is provided with a pair of rotating bodies 31 that rotate in a state of contacting each other.

[0045] A heat source (not shown) is provided inside one of the pair of rotating bodies 31 .

[0046] In the fixing section 30 , the paper P is pressed and heated by the two rotating bodies 31 , so that the toner image on the paper P is fixed on the paper P.

[0047] The image forming operation in the image forming apparatus 1 will be described.

[0048] In the image forming unit 10 , the photosensitive drum 11 rotating in the direction of arrow A is charged by the charging roller 12 . Then, the photosensitive drum 11 is exposed by the exposure device 13 , and an electrostatic latent image corresponding to image information is formed on the surface of the photosensitive drum 11 .

[0049] Thereafter, development is performed by the developing device 14 , and a toner image corresponding to the electrostatic latent image is formed on the surface of the photosensitive drum 11 .

[0050] The toner image formed on the photosensitive drum 11 moves toward the transfer portion T as the photosensitive drum 11 rotates. In addition, the paper P fed from the paper supply portion 20 is transported to the transfer portion T by the paper transport mechanism 23 .

[0051] Then, the toner image on the photosensitive drum 11 is transferred to the conveyed paper P by the transfer unit T. Then, the paper P to which the toner image has been transferred passes through the fixing unit 30 , whereby the toner image is heated and pressed, and the toner image is fixed on the paper P.

[0052] Figure 2 1 is a schematic perspective view partially showing a housing 40 of the image forming apparatus 1. In this figure, the description is made using the X direction, the Y direction, and the Z direction. The Z direction is the height direction, the up-down direction, or the longitudinal direction, and is the vertical direction. The X direction is the width direction or the lateral direction, and is the direction intersecting the vertical direction. The Y direction is the depth direction, and is the direction intersecting the vertical direction.

[0053] like Figure 2 As shown in FIG. 1 , the frame 40 includes components 41 and 42 extending in the Z direction, a lower component 43 extending in the X direction and located away from the Z direction, and an upper component 44. Figure 2Although some parts are omitted from the illustration, the structure also includes members 45 to 47 extending in the Y direction.

[0054] More specifically, the lower member 43 is located below the upper member 44. That is, the lower member 43 and the upper member 44 are arranged to intersect the Z direction and are not in contact with each other in the Z direction.

[0055] The lower part 43 is connected to the parts 41 and 42, and the upper part 44 is connected to the parts 41 and 42. Figure 2 In the example, there is a space in the portion surrounded by the components 41, 42, the lower component 43, and the upper component 44, and there is no frame of the frame body connected to the lower component 43 and the upper component 44 in the vertical direction in the space.

[0056] Here, the lower member 43 is an example of a second frame, and the upper member 44 is an example of a first frame.

[0057] Figure 3 4 is a schematic perspective view showing a state where the outer member 51 covering the substrate 60 is mounted on the frame 40, and the members 45 to 47 and the like are omitted (see FIG. Figure 2 ) components.

[0058] Figure 3 The substrate 60 shown by the dotted line is located between the lower part 43 and the upper part 44 and is used to implement the image forming device 1 (see Figure 1 ) is a printed circuit board that performs the function of the power supply. More specifically, the substrate 60 is a substrate that handles high voltage power supply and requires a fireproof enclosure to minimize the spread of fire or flames from the inside.

[0059] The fireproof outer shell of the substrate 60 in this embodiment is composed of an outer member 51 and an inner member 52 described later (see Figure 4 ). The outer member 51 is a plate-shaped member, and the inner member 52 is a member having a recess. Therefore, the space formed by the recess of the inner member 52 accommodates the substrate 60, and the outer member 51 isolates the space of the inner member 52 from the outside.

[0060] The inner member 52 is an example of a housing portion.

[0061] Figure 4 It is a longitudinal cross-sectional view including the lower member 43 and the upper member 44 , and is a cross-sectional view including the Y direction and the Z direction.

[0062] like Figure 4 As shown, the substrate 60 is arranged so that the welding surface 60b is on the outer member 51 side and the component mounting surface 60a is on the inner member 52 side. In the figure, the region where components can be mounted is indicated by a dashed line on the component mounting surface 60a.

[0063] The inner member 52 is a member that supports a load and has a shape that forms a space for accommodating the substrate. The inner member 52 is formed of a non-flammable resin.

[0064] The outer member 51 is a metal covering member and is plate-shaped as described above, so it is not a member that supports a load.

[0065] More specifically, when an external force (not shown) such as to bend the outer member 51 acts on the outer member 51, the external force is transmitted to the inner member 52 having a higher rigidity than the outer member 51, thereby suppressing the bending of the outer member 51. This prevents the outer member 51 from contacting the substrate 60.

[0066] Here, a handle portion 70 is provided on the lower side of the lower member 43. The handle portion 70 is used to lift the image forming apparatus 1 (see Figure 1 ), in the X direction (for example, refer to Figure 2 ) is arranged with a gap therebetween. The number of the handle portions 70 is, for example, two so that the handle portion 70 can be held with both hands.

[0067] In addition to the case where the handle portion 70 is integrally formed with the lower member 43 , it is also conceivable that the handle portion 70 is formed as another member.

[0068] The handle portion 70 is a recessed portion formed by recessing toward the inner side (Y direction) of the lower member 43 to form an inner surface 71. The upper inner surface 72 (see Figure 5 ) is a surface that guides the user's fingers in the Y direction. Thus, when the user holds the handle portion 70, the user's fingers hit the upper inner surface 72, thereby suppressing the concentration of load on the fingers.

[0069] The upper inner surface 72 is an example of a surface that guides the user's finger in the depth direction.

[0070] The lower member 43 has an action surface 43a extending in the Y direction, that is, in a direction intersecting the vertical direction, and when an external force F is input to the handle portion 70, the external force F acts. The action surface 43a is the lower surface of the lower member 43. The handle portion 70 is located below the action surface 43a.

[0071] Furthermore, in the present embodiment, the handle portion 70 is formed by a recessed portion, but the present invention is not limited thereto and may be formed by a grip portion or a handle portion (not shown).

[0072] More specifically, the lower part 43 does not have a portion that is bent from the action surface 43a toward the lower side. Thus, the internal space of the frame 40 can be effectively utilized. In addition, the portion that is bent from the action surface 43a toward the lower side refers to a portion formed by limiting the internal space due to the bend. Therefore, it is considered that when the internal space is substantially not limited, a step is provided on the lower part 43 instead of the bend.

[0073] Figure 5 yes Figure 4 4 is a partial enlarged view of a region K, and is a view for explaining the relationship between the action surface 43 a of the lower member 43 and the handle portion 70 .

[0074] like Figure 5 As shown, in the lower part 43, the external force F (refer to Figure 4 ) When the action surface 43a acting thereon is the portion L1, the handle portion 70 has a portion L2 overlapping the portion L1 in the up-down direction.

[0075] Thus, the rigidity of the frame can be ensured without providing, for example, a new member that is arranged to intersect the Z direction and that contacts the lower member 43 and the upper member 44 .

[0076] In addition, if Figure 5 As shown in FIG. 1 , the end 73 of the Y direction in the recessed portion of the handle portion 70 is located in the section corresponding to the overlapped portion L2. Thus, the inner member 52 can be used as a member for supporting the frame.

[0077] In the present embodiment, a notch 74 is formed in the handle portion 70 for allowing the user's finger inserted into the handle portion 70 to access the action surface 43a of the lower part 43. In addition, instead of providing a structure with the notch 74, a structure in which the handle portion 70 abuts against the action surface 43a of the lower part 43 by inputting an external force F to the handle portion 70 may be adopted.

[0078] Figure 6 1 and 12 are diagrams for explaining a gap G between an action surface 43a of a lower member 43 and a back end portion 52a of an inner member 52. (a) shows a case where the gap G exists, and (b) shows a case where the gap G does not exist.

[0079] Without turning the handle portion 70 (e.g., referring to Figure 5 ) When an external force F is input, Figure 6 As shown in (a), the inner end portion 52a of the inner member 52 is separated from the action surface 43a, and a gap G exists. That is, when no external force F is input to the handle portion 70, it is in a state of being separated from the action surface 43a.

[0080] On the other hand, when the external force F is inputted to act on the action surface 43a, as shown in FIG. Figure 6As shown in (b) of FIG. 5 , the action surface 43 a bends in the Z direction and contacts the back end 52 a , thereby eliminating the gap G. Thus, the back end 52 a transmits the external force F received from the action surface 43 a to the upper member 44 .

[0081] In the present embodiment, by adopting a structure in which the gap G is formed when no upward external force F is applied, it is possible to improve the assembling workability of the frame.

[0082] The back end portion 52a of the inner member 52 is an example of a predetermined portion of the overlapping portion.

[0083] Figure 7 It is a schematic diagram for explaining the support structure of the inner member 52.

[0084] like Figure 7 As shown, the inner member 52 has a high rigidity region 52b surrounded by a dotted line and having high rigidity in the Z direction. The high rigidity region 52b includes a back end portion 52a that contacts the lower member 43 when an upward external force F acts.

[0085] In addition, the high rigidity region 52b includes the upper end portion 52c of the inner member 52. The upper end portion 52c is not a member that contacts the upper member 44 when the external force F is not applied. Figure 7 As shown, the upper end portion 52 c contacts the upper member 44 when the external force F acts. The upper end portion 52 c is not limited to this, and may be connected to the upper member 44 .

[0086] The inner member 52 functions as a support, and supports a load called the upward external force F in a high rigidity region 52 b surrounded by a dotted line, and transmits the load to the upper member 44 .

[0087] Therefore, when the handle portion 70 (refer to Figure 4 ) acts on the action surface 43a of the lower part 43, the external force F is transmitted to the upper part 44 through the high rigidity area 52b in the inner part 52. In addition, even if no new parts are provided, the rigidity of the frame can be ensured by providing the high rigidity area 52b on the inner part 52 constituting a part of the fireproof shell.

[0088] <Note> (((1)))

[0090] A frame structure, comprising:

[0091] First frame;

[0092] A second frame located at a lower side relative to the first frame and having a handle portion, and having an action surface extending in a direction intersecting the vertical direction for an external force input to the handle portion to act on; and

[0093] The accommodating portion accommodates the substrate between the first frame and the second frame and has a portion that overlaps with the action surface of the second frame in the up-down direction. (((2)))

[0095] The frame structure according to (((1))) is characterized in that:

[0096] The handle portion is a recessed portion located below the action surface of the second frame, and an upper inner surface of an inner surface formed by being recessed toward the inner side of the second frame is a surface for guiding a user's finger in a depth direction. (((3)))

[0098] The frame structure according to (((2))) is characterized in that:

[0099] An end portion of the recessed portion in the depth direction is located within a section corresponding to the overlapping portion. (((4)))

[0101] The frame structure according to any one of (((1))) to (((3))) is characterized in that:

[0102] When external force is input to the handle portion of the second frame, the accommodation portion transmits the external force received from the action surface to a predetermined portion of the overlapping portion to the first frame. (((5)))

[0104] The frame structure according to (((4))) is characterized in that:

[0105] When no external force is input to the handle portion, the predetermined portion is in a state of being separated from the action surface. (((6)))

[0107] The frame structure according to any one of (((1))) to (((5))), characterized in that:

[0108] The second frame does not have a portion facing downward from the action surface. (((7)))

[0110] The frame structure according to any one of (((1))) to (((6))), characterized in that:

[0111] The housing portion is formed of a non-combustible resin.

[0112] According to (((1))), two frames arranged in a manner intersecting with the vertical direction can ensure the rigidity of the frame even without providing a new frame arranged in a manner intersecting with the vertical direction and in contact with the two frames, when a frame that does not contact the two frames in the vertical direction bears a load in the vertical direction.

[0113] According to (((2))), the handle portion is a recessed portion located below the action surface of the second frame, and the upper inner surface of the inner surface formed by recessing toward the inner side of the second frame is a surface for guiding the user's fingers in the depth direction. Compared with a case without such a structure, the concentration of load on the fingers of the user holding the handle portion can be suppressed.

[0114] According to (((3))), the end portion in the depth direction of the recessed portion is located in the section corresponding to the overlapping portion, and the strength of the housing portion can be ensured compared to a case where such a structure is not provided.

[0115] According to (((4))), when external force is input to the handle portion of the second frame, the accommodating portion transmits the external force received from the action surface to a predetermined portion of the overlapping portion to the first frame, thereby ensuring the rigidity of the frame body compared to a case without such a structure.

[0116] According to (((5))), when no external force is input to the handle portion, the predetermined portion is separated from the action surface, and the assembly workability can be improved compared to a case where such a structure is not provided.

[0117] According to (((6))), the second frame does not have a portion extending downward from the action surface, and the internal space can be used more effectively than in a case where such a structure is not provided.

[0118] According to (((7))), the housing portion is formed of a non-combustible resin, and the fire resistance of the housing portion can be improved compared to a case where such a structure is not provided.

Claims

1. A frame structure, characterized in that: have: First frame; A second frame, which is located at a lower side relative to the first frame and has a handle portion, and has an action surface extending in a direction intersecting the vertical direction for an external force input to the handle portion to act on; as well as The accommodating portion accommodates the substrate between the first frame and the second frame and has a portion that overlaps with the action surface of the second frame in the up-down direction.

2. The frame structure according to claim 1, wherein: The handle portion is a recessed portion located below the action surface of the second frame, and an upper inner surface of an inner surface formed by being recessed toward the inner side of the second frame is a surface for guiding a user's finger in a depth direction.

3. The frame structure according to claim 2, wherein: An end portion of the recessed portion in the depth direction is located within a section corresponding to the overlapping portion.

4. The frame structure according to any one of claims 1 to 3, wherein: When external force is input to the handle portion of the second frame, the accommodation portion transmits the external force received from the action surface to a predetermined portion of the overlapping portion to the first frame.

5. The frame structure according to claim 4, wherein: When no external force is input to the handle portion, the predetermined portion is in a state of being separated from the action surface.

6. The frame structure according to any one of claims 1 to 5, wherein: The second frame does not have a portion facing downward from the action surface.

7. The frame structure according to any one of claims 1 to 6, wherein: The housing portion is formed of a non-combustible resin.

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