JP6167782B2 - Housing and development housing - Google Patents

Description

  The present invention relates to a developing housing used for a housing and a developing device. In particular, in a housing having a main body portion and a lid portion, even if deformation such as warpage occurs in the main body portion provided with side wall portions facing at least both sides of the bottom surface portion, the main body portion should be fitted with the lid portion. Therefore, it is characterized in that the deformation such as warpage in the main body can be corrected easily and appropriately.

  Conventionally, a housing having a main body portion and a lid portion has been widely used in various housings such as a developing housing used in a developing device in an image forming apparatus. An injection molded resin material is widely used.

  In recent years, there has been an increasing demand for reducing the weight of image forming apparatuses and the like. For this reason, thinning of the main body has been performed in various housings such as a developing housing.

  Here, when the main body is thinned by injection molding of the resin material as described above, the main body is deformed such as warping due to slight differences in molding conditions, etc. For example, when the screw member provided between the opposing side wall portions in the main body portion is rotated so as to stir the developer as in the developing housing, the bottom surface portion of the main body portion and the screw member The distance between them changes in the axial direction, and the screw member comes into contact with the bottom surface of the main body, which causes problems such as damage, noise, and deterioration of the developer.

  And in order to correct such deformations such as warping in the main body, for example, in the one shown in Patent Document 1, a rigid component is fixed to the periphery of a low-rigidity portion whose rigidity has been reduced in the housing. It has been shown to correct the deformation of low stiffness parts.

  Here, in what is shown in Patent Document 1, for example, as shown in FIGS. 1A and 1B, a screw is inserted into a bottom surface portion 1a of a casing 1 in which a resin material is injection-molded via a required interval. While the hole portion 1b is provided, the bottom surface portion 2a of the rigid part 2 having a groove shape is set on the bottom surface portion 1a of the housing 1 provided with the screw hole portion 1b. Each screw 3 is screwed into each screw hole portion 1b provided in the portion 1a from above the bottom surface portion 2a of the rigid component 2, and the bottom surface portion 1a of the housing 1 is brought into close contact with the bottom surface portion 2a of the rigid component 2, The bottom surface portion 1a of the housing 1 is flattened so that deformation such as warpage in the housing 1 is corrected.

  However, as shown in FIG. 1C, when the bottom surface portion 1a of the housing 1 is greatly warped, the screw hole portion 1b provided in the bottom surface portion 1a of the housing 1 is inclined, and the rigid component 2, even if one screw 3 is screwed into one screw hole 1 b provided on the bottom surface 1 a of the housing 1 from the top of the bottom surface 2 a of the housing 2, the other screw provided on the bottom surface 1 a of the housing 1 The screw hole portion 1b is greatly inclined, and it becomes very difficult to screw the other screw 3 into the other screw hole portion 1b provided on the bottom surface portion 1a of the housing 1 from above the bottom surface portion 2a of the rigid component 2. For example, there is a problem that it is necessary to strongly screw the other screw 3 into the other screw hole portion 1b while strongly pressing the rigid component 2 against the bottom surface portion 1a of the housing 1.

JP 2001-15938 A

  The present invention provides a housing having a main body portion and a lid portion. When a deformation such as a warp has occurred in a main body portion provided with side wall portions opposed to at least both sides of a bottom surface portion, the deformation of the main body portion is deformed. It is an object to make it possible to correct easily and appropriately.

In order to solve the above-described problems, the housing according to the present invention has a main body portion and a lid portion, and is provided with side wall portions facing at least both sides of the bottom surface portion of the main body portion. In the housing in which the extension portion for the extension is extended and the lid portion is attached to each of the extension portions so as to cover the upper surface of the body portion, the lid is attached to each extension portion of the body portion. And at least a pair of engaging portions which are attached to the lid portion by being engaged with the attaching portion, and are arranged at a required interval. In addition, at least one of the attachment portion and the engagement portion is provided with a correction portion that corrects deformation in the main body portion in a state where the lid portion is attached to the main body portion , and further, each extension portion in each of the side wall portions is provided . Each provided mounting part and The position of each side wall side of a position to engage the respective engagement portions provided in the lid portion of the, is provided sealing means for sealed with each extending portion and the lid portion.

And in this housing, while engaging each engaging part provided in the cover part with each attaching part provided in each extending part in a main part, a cover part is attached to a main part, and an attaching part The deformation in the main body is corrected by the correction portion provided on at least one of the engagement portion. Further, as described above, each side wall portion is located at a position closer to each side wall than a position where each attachment portion provided at each extending portion of each side wall portion is engaged with each engagement portion provided at the lid portion. When the sealing means is provided, each extending portion and the lid portion are sealed by the sealing means, so that the thing in the housing is prevented from leaking out from the portion to which the lid portion is attached.

  Here, from the viewpoint of ease of molding and the like, a resin molded product is generally used as the main body, and a resin molded product can also be used as the lid. In addition, after attaching a cover part to a main-body part as mentioned above and correcting a deformation | transformation in a main-body part, it prevents that the main-body part correct | amended by the difference of the expansion | swelling by the heat | fever of a main-body part and a cover part deform | transforms. Therefore, it is preferable that the main body and the lid are made of the same material or a material having the same thermal expansion coefficient.

  Further, when the main body is molded, the bottom surface of the main body is deformed in the direction in which the side wall portions on both sides are separated along the mountain shape, or the side wall portions on both sides are formed in the bottom shape of the main body portion along the valley shape. In order to deform in the approaching direction, it is preferable to provide the correction part in a direction in which the distance between the side wall parts on both sides of the main body part is narrowed and / or in a direction in which it is widened.

  And as said correction | amendment part, the taper part which adjusts the position of the attachment part which attaches the said engagement part to at least one of the said attachment part and engagement part can be provided.

  In addition, as described above, each engaging portion provided on each extending portion of the main body portion is engaged with each engaging portion provided on the lid portion, and the deformation in the main body portion is corrected by the correcting portion. After the lid portion is attached to the main body portion, the attachment portion and the engagement portion can be welded via the correction portion.

  Further, in the housing, in addition to the side wall portions opposed on both sides of the bottom surface portion, the main body portion is provided with a third side wall portion continuous with the side wall portions on both sides, and the third side wall portion is covered with the lid. A third extending portion for attaching the portion, and a third attaching portion for attaching the lid portion to the third extending portion. The third attaching portion is provided on the lid portion. In a state where a third engaging portion that is engaged and attached is provided, and at least one of the third attaching portion and the third engaging portion, a lid portion is attached to the main body portion. It is possible to provide a correction part that corrects deformation in the main body part.

  Further, the developing housing according to the present invention includes a side wall portion facing on both sides of the bottom surface portion and a third side wall portion continuous with the side wall portion on both sides, and a screw member is provided between the facing side wall portions. In the developing housing having the main body portion and the lid portion attached so as to cover the upper surface of the main body portion, the housing as described above is used.

Here, in such a development housing, using the housing as each and the mounting portion provided on the extending portion of each side wall as described above, provided in the lid of the Since the sealing means for sealing each extending portion and the lid portion is provided at a position closer to each side wall portion than the position at which the engaging portion is engaged , the developer in the developing housing is separated from the main body portion. It is possible to prevent leakage from the portion where the lid is attached.

  In the housing according to the present invention, as described above, the engaging portions provided on the extending portions of the main body portion are engaged with the engaging portions provided on the lid portion, so that the main body portion is provided with the lid portion. In addition to being attached, the correction part provided in at least one of the attachment part and the engagement part is used to correct the deformation in the main body part, so that the deformation such as the warp in the main body part can be corrected easily and appropriately.

In addition, in a developing housing using such a housing, even if deformation such as warping has occurred in the main body, by attaching the lid to the main body as described above, deformation such as warping in the main body can be achieved. The distance between the screw member, which is straightened and provided between the opposing side wall portions in the main body portion, and the bottom surface portion of the main body portion does not change in the axial direction, and the distance between the screw member and the bottom surface portion of the main body portion. When the screw member is rotated and the developer is stirred, the screw member comes into contact with the bottom surface of the main body, and these are damaged or noise is generated. And the developer is not deteriorated. Furthermore, as described above, each side wall portion is located at a position closer to each side wall than a position where each mounting portion provided on each extending portion of each side wall portion is engaged with each engaging portion provided on the lid portion. When the sealing means is provided, each extending portion and the lid portion are sealed by the sealing means, so that the thing in the housing is prevented from leaking out from the portion to which the lid portion is attached.

The prior art which corrects a deformation | transformation of a housing | casing by attaching a rigid component to a housing | casing is shown, (A) is the schematic perspective view which showed the state which attached the rigid component to the housing | casing, (B) is a rigid component in a housing | casing. FIG. 4C is a schematic cross-sectional view showing a state in which the housing is attached, and FIG. 8C is a cross-sectional explanatory view showing a state in which it is difficult to attach a rigid component to the housing due to large deformation of the housing. In the housing which concerns on embodiment of this invention, it is the schematic perspective view which showed the state which isolate | separated the main-body part and the cover part. In the housing which concerns on the said embodiment, it is the schematic perspective view which showed the state which attached the cover part to the main-body part. In the housing which concerns on the said embodiment, it is the schematic sectional drawing which showed the state which engaged the engaging part of the cover part with the attaching part of the main body part, and attached the cover part to the main body part. In the housing which concerns on the said embodiment, it is the elements on larger scale which showed the state which engaged the engaging part of the cover part with the attaching part of the main-body part. In the housing which concerns on the said embodiment, it deform | transformed so that the center part of the bottom face part in a main-body part may protrude upwards, and the schematic sectional drawing which showed the main-body part which the space | interval of the upper end part of the side wall part of both sides became wide It is. In the housing which concerns on the said embodiment, it is the partial expanded sectional explanatory view which showed the state which engages the engaging part of a cover part with the attaching part of the main-body part from which the space | interval of the upper end part of the side wall part of both sides became wide. In the housing which concerns on the said embodiment, the schematic sectional drawing which showed the main-body part which the center part of the bottom face part in a main-body part deform | transforms so that it may protrude below, and the space | interval of the upper end part of the side wall part of both sides became narrow. It is. In the housing which concerns on the said embodiment, it is the partial expanded sectional explanatory drawing which showed the state which engages the engaging part of a cover part with the attaching part of the main-body part in which the space | interval of the upper end part of the side wall part of both sides became narrow. In the housing which concerns on the said embodiment, it is the schematic which showed the change of the curvature before attaching a cover part to a main-body part, and after attaching a cover part to a main-body part. In the housing which concerns on the said embodiment, after attaching a cover part to a main-body part, it is the schematic sectional drawing which showed the state which pushed the cover part further into the main-body part and attached the cover part to the main-body part. In the housing which concerns on the said embodiment, it is the elements on larger scale which showed the state which engaged the engaging part of the cover part with the attaching part of the main-body part, and attached the cover part to the main-body part. The 1st example of a change of the housing concerning the above-mentioned embodiment is shown, and (A) shows the state where two attaching parts were provided in each extension part in a main-body part via a required interval in the length direction of a side wall part. FIG. 5B is a schematic plan view showing a state in which two engaging portions are provided corresponding to the mounting portions on each flange portion of the lid portion. The 2nd modification of the housing which concerns on the said embodiment is shown, and it continues with the side wall part in the said both sides along the other side of a bottom face part other than the side wall part which opposes on both sides of the bottom face part in a main-body part. It is the schematic perspective view which showed the state which isolate | separated the main-body part which provided the side wall part, and the cover part with which this main-body part is mounted | worn. An example in which the housing according to the embodiment is used for a developing housing is shown, in which (A) is a schematic cross-sectional view of a main body, and (B) is a schematic plan view of the main body. It is a schematic plan view of the cover part used for the said development housing. The housing which concerns on the said embodiment WHEREIN: The modified example in the case of attaching the cover part to a main-body part by engaging the engaging part of a cover part with the attachment part of a main-body part, (A) is an attachment part of a main-body part. FIG. 4B is a partially enlarged cross-sectional explanatory view showing a state before the engaging portion of the lid portion is guided to (B), and FIG. (C) is a partially enlarged view showing a state in which the lid is further pushed into the main body and the lid is attached to the main body after attaching the lid to the main body. FIG.

  Next, a housing according to an embodiment of the present invention and a developing housing using such a housing will be specifically described with reference to the accompanying drawings. Note that the housing and the developing housing according to the present invention are not limited to those shown in the following embodiments, and can be implemented with appropriate modifications within a range not changing the gist thereof.

  The housing of this embodiment has a main body portion 10 and a lid portion 20 as shown in FIG.

  In the main body 10, a pair of side wall portions 12 are provided on the left and right sides of the flat bottom surface portion 11 so as to face each other, and from the side wall portions 12 to the outside, extending for attaching the lid portion. The protruding portion 13 is extended, and a rising portion 14 is provided along the edge of the extending portion 13. On the other hand, in the lid portion 20, the portions on both sides of the base portion 21 introduced between the side wall portions 12 on both sides of the main body portion 10 are key-shaped upward corresponding to the extension portions 13. An extended collar 22 is provided.

  In this embodiment, the lid portion 20 in the lid portion 20 is attached to the extending portion 13 in the main body portion 10 so that the lid portion 20 covers the upper surface of the main body portion 10. I am doing so.

  Here, in this embodiment, when attaching the collar portion 22 in the lid portion 20 to the extension portion 13 in the main body portion 10, the lid portion 20 is attached to the extension portion 13 in the main body portion 10. As a mounting portion 15 for mounting the mounting projection 15a, a mounting projection 15a having a required width protruding upward from the extending portion 13 is provided at a position spaced from the rising portion 14 and a required interval. The raised portion 14 is provided with an opposing projection 15b that faces the mounting projection 15a.

  On the other hand, the lid portion 20 is provided with an engagement hole 23a for introducing the mounting protrusion 15a at a position from the edge of the flange portion 22 in the lid portion 20 through a required interval. In this case, the inner surface 23b of the engagement hole 23a, the outer surface 23c of the lid portion 20 at the position of the engagement hole 23a, and the engagement hole 23a are engaged portions 23 that are engaged with the mounting portion 14 in the main body portion 10. Function.

  Moreover, in this embodiment, with the lid 20 attached to the main body 10, the mounting protrusion 15 a and the opposing protrusion 15 b in the main body 10 are used as the correction part 30 that corrects deformation in the main body 10. , Taper portions 31 and 32 that are inclined downward toward the opposing side are provided on the opposing surfaces.

  In this embodiment, the protrusions 24 and 25 are provided on the lower surface of the flange portion 22 on both sides of the engagement hole 23a provided in the flange portion 22 of the lid portion 20, respectively. On the ridge 25 on the base 21 side, a sealing ridge 25a protruding further downward is provided.

  And in this embodiment, when attaching the collar part 22 in the said cover part 20 to the said extension part 13 in the main-body part 10 so that the upper surface of the main-body part 10 may be covered as mentioned above, FIG. As shown in FIG. 5, each attachment projection 15 a provided on each extension 13 of the main body 10 is inserted into each engagement hole 23 a provided on the flange 22 of the lid 20, and The lid portion 20 is mounted from above the main body portion 10 so that the flange portion 22 outside the engagement hole 23a is guided between the mounting projection portion 15a and the opposing projection portion 15b.

  Here, the interval between the taper portions 31 (particularly the outer lower end position) provided on the pair of attachment projections 15a provided corresponding to the left and right side wall portions 12, and the pair of engagement holes that come into contact with this when mounted. The interval between the inner surfaces 23b of 23a is set to the same length (for example, 308.00 mm) as a design value.

  In addition, the interval between the taper portions 32 (particularly the inner lower end position) provided on the pair of mounting projections 15a, and the interval between the outer surfaces 23c of the lid portion 20 at the position of the pair of engagement holes 23a that abut against this when mounted, Similarly, the design value is set to the same length (for example, 310.50 mm).

  Here, as shown in FIG. 6, when the center portion of the bottom surface portion 11 of the main body portion 10 is deformed so as to protrude upward, the distance between the upper end portions of the side wall portions 12 on both sides is widened. Is assumed. In this case, due to the deformation, the distance between the pair of tapered portions 31 and the pair of tapered portions 32 becomes wider than the design value. In this state, when each mounting protrusion 15a provided on each extending portion 13 of the main body 10 is inserted into each engaging hole 23a provided on the flange portion 22 of the lid portion 20 as described above. As shown in FIG. 7, the lower edge of the engagement hole 23 a on the base 21 side comes into contact with the tapered portion 31 provided on the mounting projection 15 a, and in this state, the lid portion 20 faces the main body portion 10. When pushed in, the engagement hole 23a is guided along the inclination of the taper portion 31, and the extension portion 13 of the side wall portion 12 is pushed toward the center via the mounting projection 15a provided with the taper portion 31. Thus, the distance between the upper end portions of the side wall portions 12 on both sides in a widened state is gradually narrowed, and the deformation of the bottom surface portion 11 whose central portion is convex upward is gradually corrected, and a pair of widened corrections The interval between the portions (tapered portions 31, 32) is set on the lid portion 20. 3 and 4, when the lid 20 is attached to the main body 10, the gap gradually decreases to match the interval (design value) of the engagement portions 23 (23b, 23c). The bottom surface portion 11 of the main body portion 10 is corrected to be in a straight state, and the deformation of the main body portion 10 is corrected.

  On the other hand, as shown in FIG. 8, when the central portion of the bottom surface portion 11 of the main body portion 10 is deformed so as to protrude downward, the interval between the upper end portions of the side wall portions 12 on both sides is narrowed. Suppose. In this case, due to the deformation, the distance between the pair of tapered portions 31 and the pair of tapered portions 32 becomes narrower than the design value. In this state, when each mounting protrusion 15a provided on each extending portion 13 of the main body 10 is inserted into each engaging hole 23a provided on the flange portion 22 of the lid portion 20 as described above. As shown in FIG. 9, the lower edge of the outer side of the engagement hole 23a comes into contact with the tapered portion 32 provided in the opposing protruding portion 15b, and the lid portion 20 is pushed toward the main body portion 10 in this state. The engaging hole 23a is guided along the inclination of the tapered portion 32, and the extending portion 13 of the side wall portion 12 is connected to the protruding portion 15b and the rising portion 14 provided with the tapered portion 32. The distance between the upper end portions of the side wall portions 12 on both sides in a state of being narrowed by being pushed outward is gradually widened, and the deformation of the bottom surface portion 11 whose central portion is convex downward is gradually corrected and narrowed. Between a pair of straightened portions (tapered portions 31, 32) Is gradually widened so as to coincide with the interval (design value) of the engaging portions 23 (23b, 23c) provided in the lid portion 20, and in the state where the lid portion 20 is attached to the main body portion 10, FIG. As shown in FIG. 4, the bottom surface portion 11 of the main body portion 10 is in a straight state, and the deformation of the main body portion 10 is corrected.

  Here, when the bottom surface portion 11 of the main body portion 10 is warped and deformed as described above, before the lid portion 20 is attached to the main body portion 10 and when the lid portion 20 is attached as described above. The change in warpage in the longitudinal direction of the bottom surface portion 11 of the main body portion 10 was examined, and the result is shown in FIG. As a result, the warpage increased as it approached the central portion of the bottom surface portion 11 before the lid portion 20 was attached. However, after the lid portion 20 was attached, the warpage in the bottom surface portion 11 was eliminated. The bottom part 11 was in a straight state.

  Further, in this embodiment, after the lid portion 20 is attached to the main body portion 10 as described above, the lid portion 20 is further pushed into the main body portion 10, and as shown in FIG. 11 and FIG. The taper portions 31 and 32 that come into contact with the lower edges of both sides of the main body 10 are deformed, and the sealing ridge 25a that protrudes further downward from the ridge 25 on the base 21 side of the lid portion 20 is formed on the main body portion 10. In this state, the attachment part 15 in the main body part 10 and the engagement part 23 in the lid part 20 are ultrasonically welded to attach the lid part 20 to the main body part 10. .

  If it does in this way, lid part 20 will be firmly attached to body part 10 in the state where the deformation of body part 10 was corrected as mentioned above, and it will prevent that lid part 20 comes off from body part 10 by vibration etc. In addition, the gap between the extended portion 13 in the main body portion 10 and the flange portion 22 in the lid portion 20 is sealed by the sealing protrusion 25a, so that the extended portion 13 in the main body portion 10 and the lid portion 20 It becomes possible to prevent the powder and the like from leaking out from the gap 22. In addition, the method of attaching the lid 20 to the main body 10 is not particularly limited to such a method, and although not illustrated, it can be attached with a screw or the like.

  Moreover, in this embodiment, each extension part 13 extended from each side wall part 12 of the main body part 10 is provided with an attachment part 15 comprising an attachment protrusion part 15a and an opposing protrusion part 15b, and the taper part. One correction part 30 consisting of 31 and 32 is provided, and correspondingly, one engagement hole 23a is provided in each collar part 22 in the lid part 20, and one engagement part 23 is provided. However, the number of the attaching portions 15 provided in each extending portion 13 of the main body portion 10 and the engaging portions 23 provided in each flange portion 22 of the lid portion 20 are not particularly limited.

  For example, as in the housing shown in FIGS. 13A and 13B, the main body 10 and the lid 20 are large, and the length of each side wall 12 in the main body 10 and each flange 22 in the lid 20 is long. When it becomes longer, the attachment portion 15 and the correction portion as described above are provided to each extension portion 13 extending from each side wall portion 12 in the main body portion 10 with a required interval in the length direction of the side wall portion 12. 30 and a plurality of engagement portions 23 as described above can be provided on each flange portion 22 of the lid portion 20 in correspondence with the plurality of the engagement portions 23.

  In such a housing, when the lid portion 20 is attached to the main body portion 10 as described above, warping of the bottom surface portion 11 in the enlarged main body portion 10 is appropriately eliminated, and twisting in the main body portion 10 is performed. Therefore, the deformation in the main body 10 can be appropriately corrected.

  Further, in the housing of this embodiment, a pair of side wall portions 12 are provided on both sides of the flat bottom surface portion 11 of the main body portion 10 so as to face each other, and the lid portion is attached outwardly from each side wall portion 12. While extending the extension part 13, in the lid part 20, the part on both sides of the base part 21 to be introduced between the side wall parts 12 on both sides of the main body part 10, corresponding to the extension part 13 above, Although the example which provided the collar part 22 extended in the key shape toward was shown, the housing is not limited to such a thing.

  For example, like the housing shown in FIG. 14, in addition to the side wall portions 12 facing on both sides of the bottom surface portion 11 in the main body portion 10, the side wall portions 12 on the both sides are continued along the other side of the bottom surface portion 11. The side wall portions 12 are provided, and the extension portions 13 for attaching the lid portions extending outward from the respective side wall portions 12 are provided in a continuous U-shape so as to be continuous. The rising portion 14 is provided along the edge of the extended portion 13, and the lid portion 20 is made to correspond to the extended portion 13 from the base portion 21 introduced between the side wall portions 12 of the main body portion 10. Thus, the collar portion 22 extended in a key shape upward can be provided so as to be continuous in a planar U-shape.

  Moreover, in this housing, as shown in FIG. 14, each extension part 13 corresponding to each side wall part 12 in the main body part 10 is provided with an attachment part composed of the attachment protrusion part 15a and the opposing protrusion part 15b as described above. 15, and each of the mounting protrusions 15 a and the opposing protrusions 15 b are provided with the correction portions 30 composed of the tapered portions 31 and 32 as described above, while the engagement holes 23 a are provided in the flange portions 22 of the lid portion 20. The engaging portions 23 as described above are provided in the flange portions 22 of the lid portion 20 so as to correspond to the attachment portions 15 provided in the extending portions 13 of the main body portion 10.

  In such a housing, when the lid portion 20 is attached to the main body portion 10 as described above, the deformation in the main body portion 10 is corrected by the lid portions 20 attached to the respective side wall portions 12 of the main body portion 10. In addition, the warpage of the bottom surface portion 11 in the main body portion 10 is appropriately eliminated, and deformation due to twisting in the main body portion 10 is also eliminated.

  Next, a developing housing used in the developing device will be described.

  In the developing housing, as shown in FIGS. 15A and 15B, screw members 40 are provided between the side wall portions 12 facing each other on both sides of the bottom surface portion 11 in the main body portion 10. Side wall portions 12 that are continuous with the side wall portions 12 on both sides are provided along the other sides, and the extension portions 13 for attaching the lid portions that extend outward from the respective side wall portions 12 are continued. In addition, the raised portion 14 is provided along the edge of the extending portion 13 having the planar U shape.

  Further, the extending portions 13 corresponding to the respective side wall portions 12 in the main body portion 10 are provided with the mounting portions 15 composed of the mounting protrusions 15a and the opposing protrusions 15b as described above, and are opposed to the respective mounting protrusions 15a. As described above, the correcting portion 30 including the tapered portions 31 and 32 is provided on the protruding portion 15b.

  On the other hand, in the lid portion 20 to be mounted on the main body portion 10, as shown in FIG. 16, the base portion 21 introduced between the side wall portions 12 of the main body portion 10 corresponds to the extending portion 13 in the main body portion 10. Thus, the flange portion 22 extended in a key shape upward is provided so as to be continuous in a planar U shape.

  In addition, an engagement hole 23 a is provided in each flange portion 22 in the lid portion 20, and the engagement portion 23 is provided in each extension portion 13 of the main body portion 10 in each flange portion 22 in the lid portion 20. The protrusions 24 and 25 are provided on the lower surface of the flange portion 22 on both sides thereof so as to sandwich the engagement holes 23a provided in the flange portion 22 and are provided corresponding to the mounting portions 15 provided, and the base portion 21 of the lid portion is provided. The protruding ridge 25 on the side is provided with a sealing ridge 25a that protrudes further downward.

  In such a developing housing, when the lid portion 20 is attached to the main body portion 10 in the same manner as in the case of the housing described above, the deformation in the main body portion 10 causes the lid attached to each side wall portion 12 of the main body portion 10. Corrected by the portion 20, the warpage of the bottom surface portion 11 in the main body portion 10 is appropriately eliminated, and deformation due to twisting in the main body portion 10 is also eliminated, so that the space between the bottom surface portion 11 of the main body portion 10 and the screw member 40 is between When the screw member 40 is rotated to stir the developer, the screw member 40 comes into contact with the bottom surface portion 11 of the main body 10 and breaks. No noise, no noise, and no deterioration of the developer.

  Further, when the lid portion 20 is attached to the main body portion 10 as described above, as shown in FIG. 12, the extending portion 13 in the main body portion 10 and the flange portion in the lid portion 20 by the sealing protrusion 25a. 22 so that the developer in the main body 10 is appropriately prevented from leaking from between the extended portion 13 in the main body 10 and the flange portion 22 in the lid portion 20. Become.

  In the housing in each of the above-described embodiments, as the attachment portion 15 for attaching the lid portion 20 to the extension portion 13 in the main body portion 10, the attachment protrusion 15 a and the opposing protrusion portion 15 b are provided and the deformation in the main body portion 10 is provided. As the correction portion 30 for correcting the above, tapered portions 31 and 32 that are inclined downward toward the opposite side are provided on the opposing surfaces of the mounting protrusion 15a and the opposing protrusion 15b, respectively. 20 is provided with an engagement hole 23a, and the engagement portion 23 engaged with the attachment portion 15 of the main body portion 10 is connected to the inner surface 23b of the engagement hole 23a and the lid 20 at the position of the engagement hole 23a. The outer surface 23c and the engagement hole 23a are configured, but the attachment portion 15 provided in the extension portion 13 of the main body portion 10, the engagement portion 23 provided in the lid portion 20, and the deformation in the main body portion 10 are corrected. Correction unit 30 is not limited to such things.

  For example, like the housing shown in FIG. 17A, the extension 13 in the main body 10 is provided with an attachment recess 15c as the attachment 15, and the extension 13 on both sides thereof is sandwiched between the attachment recesses 15c. Sealing protrusions 16a and 16b are provided on the upper surface, respectively, and as a correction part 30 for correcting deformation in the main body part 10, taper parts 33a and 33b that are inclined downward toward the opposite surface of the mounting recess 15c, respectively. On the other hand, as the engaging portion 23 engaged with the mounting recess 15c in the main body portion 10 on the flange portion 22 of the lid portion 20, the lower surface of the flange portion 22 of the lid portion 20 is tapered downward. It is possible to provide the engagement convex portion 23d contracted in the shape.

  And in this housing, in attaching the collar part 22 in the said cover part 20 to the said extension part 13 in the main-body part 10 so that the upper surface of the main-body part 10 may be covered, it shows in FIG.17 (B). As described above, the engaging convex portion 23d provided in the flange portion 22 of the lid portion 20 is guided into the mounting concave portion 15c provided in the extending portion 13 of the main body portion 10, and is provided on the surface facing the mounting concave portion 15c. Further, the engaging projection 23d is introduced into the mounting recess 15c along the tapered portions 33a and 33b, and the lid portion 20 is mounted from the top of the main body portion 10.

  In this way, even if the bottom surface portion 11 of the main body portion 10 is warped and deformed, the engagement convex portion 23d provided on the flange portion 22 of the lid portion 20 is provided on the surface facing the mounting concave portion 15c. The taper portions 33a and 33b are pushed, and, as in the case described above, the distance between the side wall portions 12 on both sides is adjusted to be constant, and the warpage in the bottom surface portion 11 is eliminated, and the main body portion 10 is removed. Will be corrected.

  Further, after the lid portion 20 is attached to the main body portion 10 in this manner, the lid portion 20 is further pushed into the main body portion 10 and the engaging convex portion provided on the lid portion 20 as shown in FIG. 23d, the tapered portions 33a and 33b provided in the mounting recess 15c are deformed, and the sealing protrusions 16a and 16b provided on the upper surface of the extension portion 13 are formed by the lower surface of the flange portion 22 in the lid portion 20. In this state, the attachment portion 15 in the main body portion 10 and the engagement portion 23 in the lid portion 20 are ultrasonically welded to attach the lid portion 20 to the main body portion 10.

  If it does in this way, like the above-mentioned case, lid part 20 will be firmly attached to body part 10 in the state where deformation of body part 10 was corrected, and lid part 20 will come off from body part 10 by vibration etc. And the gap between the extended portion 13 of the main body 10 and the flange portion 22 of the lid portion 20 is sealed by the sealing protrusions 16a and 16b. It is possible to appropriately prevent powder and the like from leaking out between the lid portion 20 and the flange portion 22 of the lid portion 20.

  In each of the embodiments described above, the lid portion 20 is provided with the flange portion 22 extended in a key shape upward, and the engagement portion 23 is provided on the flange portion 22. There is no need to provide such a flange 22, and although not shown, it is also possible to provide each engaging portion as described above on a flat lid.

DESCRIPTION OF SYMBOLS 10 Main body part 11 Bottom face part 12 Side wall part 13 Extension part 14 Standing part 15 Attachment part, 15a Attachment protrusion, 15b Opposite protrusion part, 15c Attachment recessed part 16a, 16b Sealing protrusion (sealing means)
20 Lid part 21 Base part 22 Cage part 23 Engagement part, 23a Engagement hole, 23b Inner surface, 23c Outer surface, 23d Engagement convex part 24, 25 Projection, 25a Sealing projection (sealing means)
30 Correction part, 31, 32 Taper part, 33a, 33b Taper part 40 Screw member

Claims (8)

The main body portion has a main body portion and a lid portion, and side wall portions facing at least both sides of the bottom surface portion of the main body portion are provided, and an extension portion for attaching the lid portion is extended from each side wall portion. In the housing in which the lid portion is attached to each of the extension portions so as to cover, at least a pair of attachment portions for attaching the lid portion is provided on each extension portion of the main body portion, and the lid portion At least one pair of engaging portions that are engaged with and attached to the attaching portion and arranged at a required interval are provided, and at least one of the attaching portion and the engaging portion is provided with a main body. In a state where the lid is attached to the part, a correction part for correcting deformation in the main body part is provided , and each attachment part provided in each extension part in each side wall part and the lid part are provided. Each side from the position where each engaging part is engaged Component of side position, the housing, characterized in that a sealing means for sealed with each extending portion and the lid portion.   The housing according to claim 1, wherein the main body is a resin molded product.   The housing according to claim 1, wherein the correction portion is provided in a direction in which a distance between side wall portions on both sides of the main body portion is reduced and / or increased.   The housing according to any one of claims 1 to 3, wherein, as the correction portion, at least one of the attachment portion and the engagement portion is a position of the attachment portion to which the engagement portion is attached. A housing provided with a tapered portion to be adjusted.   The housing according to any one of claims 1 to 4, wherein the mounting portion and the engaging portion are welded via the correction portion.   The housing according to any one of claims 1 to 5, wherein, in addition to the side wall portion opposed to the main body portion on both sides of the bottom surface portion, a third side wall portion continuous with the side wall portion on both sides thereof. And extending a third extension for attaching the lid from the third side wall, and providing the third extension for attaching the lid to the third extension, A housing characterized in that a third engagement portion that is engaged with and attached to the third attachment portion is provided on the lid portion.   The housing according to claim 6, wherein a correction portion that corrects deformation in the main body portion in a state where a lid portion is attached to the main body portion on at least one of the third attachment portion and the third engagement portion. A housing characterized by being provided.   A main body portion having a side wall portion opposed on both sides of the bottom surface portion and a third side wall portion continuous with the side wall portion on both sides, and a screw member provided between the opposite side wall portions, and an upper surface of the main body portion. A developing housing having a lid portion attached so as to cover the developing housing, wherein the housing according to any one of claims 1 to 7 is used.

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