JP7727311B2 - Storage case - Google Patents

Description

The present invention relates to a storage case.

Storage cases for storing household clothing and other items have been known for some time. For example, the storage case disclosed in Patent Document 1 consists of a drawer for storing items such as clothing, and a case body that stores the drawer. The drawer is able to slide along a rail projection provided on the bottom surface of the case body. However, if the storage case is dropped during transport and subjected to an impact while the drawer is stored in the case body, the drawer may collide with the case body, causing damage to the drawer. Furthermore, stress from the impact may concentrate around the contact point between the rail projection on the case body and the drawer, causing damage to the drawer.

Patent No. 4038461

In consideration of the above problems, the present invention provides a storage case that prevents damage to drawers due to dropping, etc.

In order to solve the above problems, the storage cases according to claims 1 and 2 of the present invention are storage cases comprising a drawer and a case body, wherein the upper surface of the bottom of the case body is provided with a rail convex portion for sliding the drawer, and the lower surface of the bottom of the drawer is provided with a receiving portion that faces the rail convex portion when the drawer is stored in the case body, and the receiving portion is formed with a protrusion to prevent damage.

According to the above features, the receiving portion is formed with anti-breakage protrusions, increasing the strength of the entire receiving portion. Therefore, even if stress is concentrated on the receiving portion, damage to the receiving portion can be prevented, and as a result, damage to the drawer can be effectively prevented even if the storage case is dropped.

Furthermore, in the storage case according to claim 1 of the present invention, the radius of curvature of the connecting portion between the lower surface of the bottom of the drawer and the receiving portion is made larger than that of other portions.

According to the above features, by connecting the receiving part to the bottom part with a gently curved surface with a large radius of curvature, stress caused by the impact when the storage case is dropped is not concentrated locally at the connection part, more effectively preventing damage to the drawer.

Furthermore, in the storage case according to claim 2 of the present invention, a recess is provided on the upper surface of the bottom of the drawer at the location where the breakage prevention projection is formed.

According to the above features, when the drawer is injection molded using a mold, the recess prevents deformation around the breakage prevention protrusion during molding.

The storage case of the present invention can prevent the drawers from being damaged by dropping or the like.

1 is an overall perspective view of a storage case according to the present invention, with a drawer pulled out from a case body. 1A is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 1B is an end view taken along line A'-A'. FIG. FIG. FIG. 10 is a bottom view of the drawer, showing an enlarged view of the periphery of the receiving portion. 5A is a BB end view of FIG. 5, FIG. 5B is a CC end view of FIG. 5, and FIG. 5C is a DD end view of FIG. FIG. 10 is a bottom view of the drawer when it is stored in the case body, showing an enlarged view of the area around the receiving portion.

100 Drawer 110 Bottom 111 Underside 180 Receiving portion 190 Breakage prevention protrusion 200 Case body 210 Bottom 270 Rail protrusion 300 Storage case

Embodiments of the present invention will be described below with reference to the drawings. In this specification, "upper" refers to the direction facing upward in the vertical direction when the drawer is placed on a horizontal surface with the opening facing up, and "lower" refers to the direction facing downward in the vertical direction. Furthermore, "front" refers to the side of the drawer where the handle is provided, and "rear" refers to the side opposite the front.

Fig. 1 shows a storage case 300 according to the present invention, and Fig. 2 shows the case body 200 of the storage case 300. Note that Fig. 1 is an overall perspective view of the storage case 300 with the drawer 100 pulled out from the case body 200, Fig. 2(a) is a cross-sectional view taken along A-A in Fig. 1, and Fig. 2(b) is an end view taken along A'-A'.

As shown in FIG. 1, the storage case 300 comprises a drawer 100 for storing items such as clothing, and a case body 200 that slidably accommodates the drawer 100. As shown in FIGS. 1 and 2, the case body 200 is made entirely of synthetic resin and has a generally rectangular parallelepiped shape. It comprises a bottom 210, side sections 220 rising from both sides of the bottom 210, a rear section 240, and a top section 230, with an opening 250 at the front. The interior of the case body 200 defines a storage space 260 that communicates with the opening 250, allowing the drawer 100 to be stored in the storage space 260 through the opening 250. To facilitate easy storage of the drawer 100 in the case body 200, the circumferential size of the portion of the drawer 100 that is stored in the case body 200 is smaller than the opening 250 of the case body 200. Furthermore, when the drawer 100 is stored in the case body 200, it is configured so that the drawer 100 does not come into contact with the outer surface of the opening frame around the outer periphery 251 of the opening 250.

Furthermore, a rail protrusion 270 protruding upward is provided on the upper surface of the bottom 210 of the case body 200. Specifically, as shown in FIG. 2, the rail protrusion 270 has a generally U-shaped cross section with an upper wall 273, an inner wall 274, and an outer wall 275, and is integrally formed with the bottom 210. The rail guide portion 170 of the drawer 100, described below, can be disposed on the outer wall 275 side of the rail protrusion 270. The rail protrusion 270 extends linearly from the leading end 271 to the trailing end 272, and guides a portion of the drawer 100 so that the drawer 100 slides in the forward and backward directions. Note that while the rail protrusion 270 is integrally formed with the bottom 210, this is not a limitation; the rail protrusion 270 may be formed separately from the bottom 210 and attached to the bottom 210. In addition, the radius of curvature of the outer edge of the outer periphery 251 of the opening 250 is large, which prevents a user from injuring themselves by hitting their fingers or other objects against the outer edge of the outer periphery 251 of the opening 250 when pulling out or storing the drawer 100 from or into the opening 250. In addition, the radius of curvature of the outer edge of the outer periphery 231 of the top part 230 is large, so even if the outer edge of the outer periphery 231 of the top part 230 hits another part when the storage case 300 is transported or stored, the top part 230 is less likely to be damaged.

Next, the configuration of the drawer 100 will be described in detail with reference to Figures 3 to 6. Figure 3 is an overall perspective view of the drawer 100, Figure 4 is a bottom view of the drawer 100, Figure 5 is a bottom view of the drawer 100 with an enlarged view of the area around the receiving portion 180, Figure 6(a) is an end view taken along B-B in Figure 5, Figure 6(b) is an end view taken along C-C in Figure 5, and Figure 6(c) is an end view taken along D-D in Figure 5.

As shown in Figure 3, the drawer 100 is made entirely of synthetic resin and has a roughly rectangular parallelepiped shape, with a bottom 110, side sections 120 rising from both sides of the bottom 110, a front section 130, and a rear section 140, with an opening 150 at the top. The interior of the drawer 100 forms a storage section 160, and is configured so that items such as clothing can be stored in the storage section 160 through the opening 150. In addition, a protruding handle 131 is provided at the top end of the front section 130 to allow fingers to be hooked.

As shown in Figures 4 and 5, a rail guide portion 170 that protrudes downward is provided on the underside 111 of the bottom 110 of the drawer 100. The rail guide portion 170 extends linearly from the leading end 171 to the trailing end 172, and is the portion that slides along the rail protrusion 270 of the case body 200 when the drawer 100 slides in the forward and backward directions. Therefore, the rail guide portion 170 of the drawer 100 and the rail protrusion 270 of the case body 200 allow the drawer 100 to slide smoothly in the forward and backward directions.

Next, as shown in Figures 5 and 6, a receiving portion 180 is provided on the underside 111 of the bottom 110 of the drawer 100, on the tip 171 side of the rail guide portion 170. This receiving portion 180 faces the tip 271 side of the rail protrusion 270 and is configured to be able to abut against the rail protrusion 270, thereby positioning the drawer 100 in the front-to-rear direction when the drawer 100 is stored in the case body 200. The receiving portion 180 protrudes downward from the underside 111 of the bottom 110 and includes a main body portion 181 facing the tip 271 side of the rail protrusion 270 and a connecting portion 182 extending forward from the main body portion 181. The main body portion 181 is connected to the tip 171 of the rail guide portion 170, thereby increasing the rigidity of the receiving portion 180. Furthermore, the connecting portion 182 is connected to the reinforcing rib 132 on the front side 130, thereby increasing the rigidity of the receiving portion 180. The reinforcing rib 132 protrudes downward from the underside 111 of the bottom portion 110 and extends linearly along the front portion 130.

Furthermore, a breakage prevention protrusion 190 is formed on the main body 181 of the receiving portion 180. The breakage prevention protrusion 190 protrudes downward from the underside 111 of the bottom portion 110 and is connected to the opposite surface 184 of the rail protrusion 270, which is opposite the opposing surface 183 that faces the tip 271 of the rail protrusion 270 (described later). Furthermore, the breakage prevention protrusion 190 is not connected to the reinforcing rib 132 but is spaced apart, so a space 191 exists between the breakage prevention protrusion 190 and the reinforcing rib 132. Note that the receiving portion 180 has a generally L-shape with the main body 181 and the connecting portion 182, but this is not limited thereto, and the receiving portion 180 may have any shape as long as it is configured to face the rail protrusion 270. Furthermore, the breakage prevention protrusion 190 is not connected to the reinforcing rib 132 but is spaced apart therefrom, but this is not limited thereto, and the breakage prevention protrusion 190 may be connected to the reinforcing rib 132. When the breakage prevention protrusion 190 is connected to the reinforcing rib 132, rigidity is increased, but stress is more easily transmitted to the reinforcing rib 132, which may cause the reinforcing rib 132 to break. Furthermore, while one breakage prevention protrusion 190 is provided on the receiving portion 180, this is not limited to this, and two or more breakage prevention protrusions 190 may be provided on the receiving portion 180.

Also, as shown in FIG. 5, a protrusion 151 is provided on the outside of the receiving portion 180, on an extension of the bottom portion 110. This protrusion 151 protrudes to the front side (i.e., toward the front portion 130) and the side side (i.e., toward the side portion 120) of the receiving portion 180, and a reinforcing rib 132 is provided on the front side. In addition, a reinforcing rib 152 that protrudes downward is formed on the side side of the receiving portion 180, and the reinforcing rib 132 and the reinforcing rib 152 are connected to surround the outside of the protrusion 151. And because the protrusion 151 protrudes to the outside of the receiving portion 180, it protects the area around the receiving portion 180 from impacts when the storage case 300 is dropped.

Furthermore, as shown in Figures 6(a) and 6(b), the radius of curvature R1 of the connection portion 113 between the underside 111 of the bottom portion 110 and the receiving portion 180 is larger than the radius of curvature of other portions, and the receiving portion 180 is connected to the bottom portion 110 by a gently curved surface. By connecting the receiving portion 180 to the bottom portion 110 by a gently curved surface in this manner, stress caused by impact when the storage case 300 is dropped is not concentrated locally on the connection portion 113, more effectively preventing damage to the drawer 100. Furthermore, as shown in Figure 6(a), a straight portion 116 is provided at the boundary between the underside 111 of the bottom portion 110 and the connection portion 113 of the receiving portion 180. Furthermore, an inclined surface 119 is provided at the tip side of the curved surface 118 of radius of curvature R1 of the connection portion 113. Therefore, as will be described later, when the tip 271 of the rail protrusion 270 abuts against the receiving portion 180 of the drawer 100, the stress caused by the abutment is effectively dispersed toward the tip of the receiving portion 180 (toward the inclined surface 119), making it difficult for the receiving portion 180 to be damaged. Also, the tip 271 of the rail protrusion 270 is guided from the curved surface 118 along the inclined surface 119, and can escape toward the tip of the receiving portion 180 (toward the inclined surface 119). As a result, the stress caused by the abutment is effectively dispersed toward the tip of the receiving portion 180 (toward the inclined surface 119), making it difficult for the receiving portion 180 to be damaged. The radius of curvature of other portions refers to the radius of curvature of the connection between the portion protruding downward from the underside 111 of the bottom 110 and the underside 111 around the receiving portion 180. For example, this refers to the radius of curvature R2 of the connection between the breakage prevention protrusion 190 and the underside 111 of the bottom 110, and the radius of curvature R3 of the connection between the reinforcing rib 132 and the underside 111 of the bottom 110. The radius of curvature R1 around the receiving portion 180 is larger than the radius of curvature R3 around the reinforcing rib 132 and the radius of curvature R4 around the rail guide portion 170 (described below) (radius of curvature R1 > radius of curvature R3, radius of curvature R1 > radius of curvature R4).

As shown in Figures 6(a) and 6(b), the thickness of the bottom 110 is thickness T1, and the thickness of the portion adjacent to the receiving portion 180 is thickness T2. Thickness T2 is thicker than thickness T1, and by locally thickening the portion of the bottom 110 where it connects to the receiving portion 180, damage near the base of the receiving portion 180 is prevented by external impact when the storage case 300 is dropped. As shown in Figure 6(b), thickness T3 of the bottom 110 where it connects to the breakage prevention protrusion 190 is also thicker than thickness T1, and this prevents damage near the base of the breakage prevention protrusion 190 from external impact when the storage case 300 is dropped. Furthermore, thickness T4 of overhang 151 adjacent to receiving portion 180 and breakage prevention protrusion 190 is thicker than thickness T1, preventing overhang 151 from being damaged by external impact when storage case 300 is dropped. Note that thickness T2 of the portion adjacent to receiving portion 180 and thickness T3 of the portion connecting to breakage prevention protrusion 190 may be made the same thickness as thickness T4 of overhang 151 (i.e., thickness T4 = thickness T2 = thickness T3), and the entire bottom 110 around receiving portion 180 may have a constant thickness T4 that is thicker than thickness T1 of bottom 110.

As shown in Figures 6(a) and 6(b), a recess 114 is provided on the top surface 112 of the bottom 110 where the breakage prevention protrusion 190 is formed. The drawer 100 is injection molded using molds located above and below the drawer 100, and the provision of the recess 114 prevents deformation around the breakage prevention protrusion 190 during molding. Furthermore, a recess 115 is also provided on the top surface 112 of the bottom 110 where the receiving portion 180 is formed, preventing deformation around the receiving portion 180 during molding.

Furthermore, as shown in FIG. 6(c), the radius of curvature R4 of the connection portion 117 between the rail guide portion 170 and the bottom portion 110 is larger than the radius of curvature of other portions, and the rail guide portion 170 is connected to the bottom portion 110 by a gently curved surface. When the drawer 100 is slid, the rail guide portion 170 abuts and slides against the rail protrusion 270 of the case body 200, and is therefore the portion that is subjected to stress when the drawer 100 is slid. Therefore, by connecting the rail guide portion 170 to the bottom portion 110 by a gently curved surface, stress when the drawer 100 is slid does not concentrate locally on the connection portion 117, more effectively preventing damage to the drawer 100. Similarly, even if an impact is applied when the storage case 300 is dropped, stress does not concentrate locally on the connection portion 117, more effectively preventing damage to the drawer 100.

Furthermore, the thickness T5 of the part connecting to the rail guide section 170 is thicker than the thickness T1, preventing damage near the base of the rail guide section 170 due to stress when the drawer 100 is slid. Similarly, even if the storage case 300 is dropped and an impact is applied, damage near the base of the rail guide section 170 is prevented.

Next, referring to Figure 7, the state in which the drawer 100 is stored in the case body 200 will be described in detail. Note that Figure 7 is a bottom view of the drawer 100 stored in the case body 200, and is an enlarged bottom view of the area around the receiving portion 180. The rail protrusion 270 of the case body 200 is also shown in phantom lines.

As shown in Figure 7, when the drawer 100 is stored in the case body 200, the tip 271 of the rail protrusion 270 abuts against the main body 181 of the receiving portion 180 of the drawer 100 or is close to the main body 181 of the receiving portion 180. In this state, if the storage case 300 is dropped and an impact is applied, the tip 271 of the rail protrusion 270 will collide strongly with the main body 181 of the receiving portion 180 of the drawer 100, concentrating stress on the receiving portion 180. However, the receiving portion 180 is formed with a breakage prevention protrusion 190, which increases the strength of the entire receiving portion 180. Therefore, even if stress is concentrated on the receiving portion 180, damage to the receiving portion 180 can be prevented. As a result, damage to the receiving portion 180 can be effectively prevented even if the storage case 300 is dropped.

Furthermore, one end of the receiving portion 180 is connected to the tip 171 of the rail guide portion 170, and the other end of the receiving portion 180 is connected to the reinforcing rib 132 via the connecting portion 182. Therefore, even if stress is applied to the receiving portion 180 when the storage case 300 is dropped, the receiving portion 180 is less likely to break because both ends are connected to other parts and reinforced. On the other hand, the middle portion between the both ends of the receiving portion 180 is reinforced by a breakage prevention protrusion 190, but the breakage prevention protrusion 190 is not connected to other parts (e.g., the reinforcing rib 132), and a space 191 exists on the side opposite the breakage prevention protrusion 190. Therefore, when stress is applied to the receiving portion 180 when the storage case 300 is dropped, there is room for the receiving portion 180 to elastically deform slightly toward the space 191, allowing the receiving portion 180 to flexibly absorb and disperse the stress and making it less likely to break.

The storage case of the present invention is not limited to the above examples, and various modifications and combinations are possible within the scope of the claims and embodiments, and these modifications and combinations are also included within the scope of the rights.

Claims (2)

A storage case having a drawer and a case body,
A rail projection for sliding the drawer is provided on the upper surface of the bottom of the case body,
a receiving portion that faces the rail protrusion when the drawer is stored in the case body is provided on the underside of the bottom of the drawer;
The receiving portion is formed with a breakage prevention protrusion,
A storage case characterized in that the radius of curvature of the connection portion between the lower surface of the bottom of the drawer and the receiving portion is larger than that of other portions . A storage case having a drawer and a case body,
A rail projection for sliding the drawer is provided on the upper surface of the bottom of the case body,
a receiving portion that faces the rail protrusion when the drawer is stored in the case body is provided on the underside of the bottom of the drawer;
The receiving portion is formed with a breakage prevention protrusion,
A storage case characterized in that a recess is provided on the upper surface of the bottom of the drawer at the location where the breakage prevention protrusion is formed .