Cover fixture

Abstract

To provide a lid fixture capable of strengthening fixing force.SOLUTION: When an operation part 40 is pushed backward, a first wall 10 is elastically deformed toward a second wall 20, and reinforcing ribs 17 formed on an inner surface 12 of the first wall 10 are received by recess parts 54 of a hook part 50 and through holes 29 of the second wall 20. As a result, since the stroke length when the first wall 10 is displaced toward the second wall 20 can be lengthened, an engagement surface 16c of a first engagement part 16 is engaged with a back surface 201a of a flange part 201 of a container body 200, and the engagement area can be increased, and consequently fixing force can be increased.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a lid fastener for fastening a lid to a container body. [Background technology]

[0002] FIG. 12 is a longitudinal cross-sectional view of a lid fastener proposed in a previous application by the present applicant. The lid fastener C includes a body 5 formed with a generally U-shaped cross section. The body 5 is made of synthetic resin and is elastically deformable. A mating claw 6 is formed protruding from the upper portion of the outer surface of the rear wall 5a constituting the body 5 across the entire width, and a flange portion K2 is formed at a predetermined distance above the mating claw 6. Meanwhile, a front wall 5b constituting the body 5 is formed with slits (not shown) at predetermined distances, dividing the wall 5b into three. The figure shows a longitudinal cross-sectional view of the central wall 5b of the three divided walls 5b. A mating claw 7 is formed on the outer surface of each of the two side walls 5b, and a flange portion K1 is formed at the top of each mating claw 7. Meanwhile, a protrusion 9 is formed protruding from the outer surface of the central wall 5b. Furthermore, the central wall 5b is formed taller than the walls on either side, and the extended part functions as a lever L that swings the protrusion 9 backward (in the direction indicated by F in the figure).

[0003] At the end of the lid body K to which the lid fastener C is attached, a long hole 4 is formed that is large enough to insert the lid fastener C. At the open end of the container body 3, a flange portion 3a is formed, and in this flange portion 3a, a locking hole 8 is formed into which the lower end of the lid fastener C can be inserted. When the lid fastener C is inserted into the elongated hole 4 of the lid body K, the mating claws 6 and 7 on both sides of the lid fastener C are locked into the elongated hole 4 of the lid body K, temporarily securing the lid fastener C to the lid body K. Next, when the lid body K with the lid fastener C attached is matched with the container body 3, the lower end of the lid fastener C attached to the lid body K is inserted into the locking hole 8 of the container body 3, the front wall 5b is elastically deformed backward, and the protrusion 9 climbs over the locking hole 4 and is locked onto the back surface of the flange portion 3a. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4223156 Summary of the Invention [Problem to be solved by the invention]

[0005] After proposing the above-mentioned lid fastener C, the applicant discovered a new problem in the process of further researching lid fasteners. That is, to increase the fastening force of the lid fastener C, it is necessary to increase the length in the front-to-rear direction of the part where the protrusion 9 is engaged with the back surface of the flange portion 3a, i.e., the engagement allowance W. However, if the engagement allowance W is increased, it is necessary to increase the length by which the lever portion L can be displaced rearward (in the direction indicated by F in the figure) in order to release the engaged state of the lid fastener C and remove the lid body K, i.e., the stroke length. However, they discovered a problem in that increasing the stroke length of the lever portion L places a limit on how much the stroke length can be increased because the front wall 5b interferes with the rear wall 5a, resulting in restrictions on increasing the engagement allowance W. In particular, when the front-to-rear width of the elongated hole 4 and the locking hole 8, i.e., the length in the short direction, is short, the stroke length of the lever portion L is inevitably short, which further restricts the increase in the engagement allowance W. Also, when the length in the short direction of the locking hole 8 is short, it is conceivable to make the lever portion L thinner to ensure a stroke length that corresponds to the increased engagement allowance W, but this inevitably reduces the strength of the lever portion L, making it difficult to adopt such a structure.

[0006] Therefore, the present invention has been created to solve the above problems, and has an object to provide a lid fastener that can increase the fastening force. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the lid fixing device of the present invention is a lid fixing device for fixing a lid to a container body by inserting it through a first hole formed through the lid and a second hole formed in the container body, and is equipped with a first wall and a second wall spaced apart from each other, a connecting portion formed to connect the lower ends of the first wall and the second wall, a first engaging portion formed on the outer surface of the first wall and engaging with the container body, a hooking portion formed on at least one of the first wall and the second wall and hooking onto the lid, and an operating portion provided on the first wall and for displacing the first wall toward the second wall by being pressed toward the second wall, and its first feature is that at least the second wall is formed with a receiving portion capable of receiving at least a part of the portion of the first wall that faces toward the second wall when the operating portion is pressed toward the second wall.

[0008] When the first wall is displaced toward the second wall by pressing the operating portion provided on the first wall, at least a portion of the portion of the first wall facing toward the second wall is received in the receiving portion formed on at least the second wall. Therefore, compared to a configuration in which a receiving portion is not formed at least on the second wall, the stroke length, which is the length by which the first wall can be displaced in the direction of the second wall, can be increased, and the engagement amount of the first locking portion with the container body can be increased accordingly, thereby strengthening the fixing force of the lid fixing device.

[0009] Furthermore, the lid fastener of the present invention, in addition to the first characteristic described above, has a second characteristic in that a portion of the receiving portion is formed in the hook portion and is continuous with the receiving portion formed in the second wall.

[0010] Since a portion of the receiving portion is formed in the hook portion and is continuous with the receiving portion formed in the second wall, at least a portion of the portion of the first wall facing the second wall can be received by a portion of the receiving portion formed in the hook portion and the receiving portion formed in the second wall, and since the hook portion does not hinder reception, the stroke length of the first wall can be secured.

[0011] Furthermore, the lid fastener of the present invention, in addition to the first or second characteristics described above, has a third characteristic in that the regulating portions for regulating the movement of the lid fastener by being positioned in at least one of the first hole and the second hole are formed from the side edges on both sides of the second wall toward the side edges on both sides of the first wall, and the side edges of each regulating portion located toward the side edges on both sides of the first wall extend to a position that coincides with the outer surface of the first wall when viewed from the outer surface of each regulating portion, or to a position that exceeds the outer surface of the first wall.

[0012] When the lid fixing device is inserted into the first hole and the second hole, each regulating portion is positioned in at least one of the first hole and the second hole, and the movement of the lid fixing device can be regulated.As a result, when the operating portion is pressed, the lid fixing device does not move, allowing for a stable pressing operation. Furthermore, the side ends of each restriction portion located toward both side edges of the first wall extend to a position that coincides with the outer surface of the first wall when viewed from the outer surface of the restriction portion, or to a position that exceeds the outer surface of the first wall. In other words, the outer surface of the first wall does not protrude beyond the side ends of each restriction portion when viewed from the outer surface of the restriction portion. As a result, when the lid fastener is inserted into the first hole and the second hole, the side ends of each restriction portion contact the inner wall surfaces of the first hole and the second hole, and the structural portion formed by the first wall, the second wall, and the connecting portion is not elastically deformed by stress from the inner wall surfaces of the first hole and the second hole. This prevents fatigue due to elastic deformation of the structural portion, thereby extending the life of the lid fastener.

[0013] Furthermore, the lid fixing device of the present invention has the fourth feature in that, in the third feature described above, a portion of the hook portion is continuous with the upper end of each regulating portion and is formed to protrude outward from the upper end of each regulating portion, and a second engaging portion that engages with the back surface of the lid is formed on each outer surface of each regulating portion.

[0014] A portion of the hook portion is continuous with the upper end of each regulating portion and is formed to protrude outward from the upper end of each regulating portion, thereby increasing the rigidity of the lid fixing device and strongly restricting movement, allowing the operating portion to be pressed and operated in an even more stable state. Furthermore, since a second locking portion that locks to the back surface of the lid is formed on the outer surface of each restricting portion, the lid fastener can be attached to the lid when the lid is removed from the container body. This allows the lid and container body to be fixed together by attaching the lid to the container body with the lid fastener attached to the lid. Furthermore, since a second locking portion that locks to the back surface of the lid is formed on the outer surface of each restricting portion, the locking force between the lid fastener and the lid can be strengthened, and the lid fastener can also be prevented from being lost separately.

[0015] Furthermore, the lid fixing device of the present invention, in any one of the first to fourth features described above, has a fifth feature in that the operating portion is provided with an extension portion extending outward from the upper end of the first wall, a pressing operation portion extending upward from the extension portion and which is the portion that is operated by pressing, and a connecting portion formed to connect the pressing operation portion and the extension portion.

[0016] The pressing operation part, which is the part to be pressed, extends upward from an extension part that extends outward from the upper end of the first wall, so there is nothing to obstruct the pressing operation, making it easy to perform the pressing operation. Furthermore, since a connecting part is provided that connects the pressing operation part and the extension part, the strength of the pressing operation part can be increased, so there is no risk of the pressing operation part being damaged when pressed.

[0017] Furthermore, the lid fastener of the present invention, in addition to the fifth characteristic described above, has a sixth characteristic in that at least a portion of the portion of the first wall that displaces toward the second wall and faces the second wall is formed on the inner surface of the first wall and is a reinforcing rib for reinforcing the first wall, and the reinforcing rib and the connecting portion are continuous.

[0018] A reinforcing rib for reinforcing the first wall is formed on the inner surface of the first wall, thereby increasing the strength of the first wall. Furthermore, the reinforcing rib is continuous with the connecting portion formed to connect the pressing operation portion and the extension portion, thereby also increasing the strength of the portion consisting of the pressing operation portion and the first wall. Furthermore, since the receiving portion can receive the reinforcing rib, the formation of the reinforcing rib on the inner surface of the first wall does not shorten the stroke length of the first wall relative to the second wall, thereby increasing the engagement allowance of the first locking portion and thereby increasing the fixing force of the lid fastener.

[0019] Furthermore, the lid fastener of the present invention, in any one of the first to sixth features described above, has a seventh feature in that the body portion formed by the first wall, the second wall and the connecting portion has a generally V-shaped longitudinal section, and a space is formed between the first wall and the second wall that narrows as it approaches the connecting portion from the upper end of each wall, and when lids to which the lid fasteners are attached are stacked one above the other, the lower end of the lid fastener attached to the upper lid can be received in the space of the lid fastener on the lower lid.

[0020] A space is formed between the first wall and the second wall, the gap narrowing as it approaches the connection part from the upper end of each wall, and when lids with the lid fasteners attached are stacked one above the other, the lower end of the lid fastener attached to the upper lid can be received in the space of the lid fastener on the lower lid, so when lids with the lid fasteners attached are stacked one above the other, the part made up of the stacked lids does not become bulky, which means that storage efficiency can be improved when storing multiple lids stacked one above the other. When the first hole and the second hole are each formed as a rectangle in a plan view, and the short-side length of the first hole and the second hole is the front-to-back width, if the longitudinal cross section of the body formed by the first wall and the second wall is approximately U-shaped, the lower part of the body inserted into the first hole cannot be further inserted into the second hole unless the front-to-back width of the second hole is approximately the same as the front-to-back width of the first hole. However, because the body of the lid fastener of the present invention having the seventh feature has a generally V-shaped cross section, even if the front-to-rear width of the second hole is narrower than that of the first hole, the lower part of the body can be inserted into the second hole and the lid can be fastened to the container body. In other words, the front-to-rear width of the second hole may be narrower than that of the first hole. [Effects of the Invention]

[0021] According to the lid fastener of the present invention, it is possible to provide a lid fastener that can increase the fastening force. [Brief explanation of the drawings]

[0022] [Figure 1] 1A and 1B are external perspective views of a lid fastener according to an embodiment of the present invention, and a lid and a container body to which the lid fastener is applied, in which (A) is an external perspective view of the lid fastened to the container body by the lid fastener, and (B) is an external perspective view of the lid fastener, the lid, and the container body. [Figure 2] FIG. 2 is an enlarged view of an area E2 surrounded by a dashed line in FIG. 1(B). [Figure 3] 2 is an enlarged perspective view of the lid fastener shown in FIG. 1, viewed from above on the front left. [Figure 4] 2 is an enlarged perspective view of the lid fastener shown in FIG. 1, seen from above at an angle from the rear left. [Figure 5] 2 is an enlarged perspective view of the lid fastener shown in FIG. 1, viewed from below and in the front left. [Figure 6] FIG. 2 is an enlarged view of an area E1 surrounded by a dashed line in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6. [Figure 8] FIG. 7 is a cross-sectional view taken along the arrow BB in FIG. 6. [Figure 9] FIG. 7 is a cross-sectional view taken along the arrow CC in FIG. 6. [Figure 10] (A) is a cross-sectional explanatory diagram showing the state before and after the first wall is displaced toward the second wall when viewed from the direction opposite the cross-section shown in Figure 7, and (B) is a cross-sectional view showing the state in which the container body is stacked on top of the lid shown in (A). [Figure 11] 1A is an explanatory view showing a state in which lids with lid fasteners attached are stacked one on top of the other, with a partial cross section, and FIG. 1B is a cross-sectional view taken along the line DD in FIG. 1A. [Figure 12] FIG. 1 is a vertical cross-sectional view of a lid fastener proposed by the applicant in a previous application. DETAILED DESCRIPTION OF THE INVENTION

[0023] A lid fastener according to an embodiment of the present invention will be described with reference to the drawings. For ease of explanation, the directions shown in Figure 1 will be used as the reference for each figure in the following description. In Figure 1, the diagonally upper left direction from the center of the drawing will be referred to as the front, the diagonally lower right direction will be referred to as the rear, the diagonally upper right direction will be referred to as the right, and the diagonally lower left direction will be referred to as the left.

[0024] [Lid structure] As shown in FIG. 1, the lid 100 includes a lid main body 101 formed in a rectangular, flat plate shape in a plan view. First holes 102 for inserting a lid fastener 1 are formed vertically through the front and rear ends of a surface 101a of the lid main body 101. As shown in FIG. 2, the first hole 102 formed at the rear end of the surface 101a is formed so that its left-right width is longer than its front-to-back width. Of the inner walls forming the first hole 102, a front inner wall 102a facing each other in the front-to-back direction has a slip-out prevention protrusion 103 formed on the front inner wall 102a that protrudes toward the rear inner wall. The first hole 102, excluding the slip-out prevention protrusion 103, is elongated in the left-right direction and has a generally rectangular shape in a plan view. When the slip-out prevention protrusion 103 is included, the first hole 102 has a generally concave shape in a plan view. The first hole 102 formed at the front end of the surface 101a is formed in the same shape as the first hole 102 formed at the rear end, and a slip-out prevention protrusion 103 (not shown) is formed on the rear inner wall of the inner walls that face each other in the front-to-rear direction, protruding toward the front inner wall. The role of the slip-out prevention protrusion 103 will be described later.

[0025] 1, rectangular, plate-shaped side walls 106 hang down from opposing side edges in the front-to-rear direction of lid body 101 (the front side wall 106 is not shown in the figure), and rectangular, plate-shaped side walls 107 hang down from opposing side edges in the left-to-right direction of lid body 101 (the right side wall 106 is not shown in the figure). Each side wall 106, 107 forms a peripheral wall hanging down from the periphery of lid body 101. Furthermore, rectangular parallelepiped-shaped fitting protrusions 104 are formed to protrude upward from opposite side edges of the surface 101a of the lid body 101 in the left-right direction, and fitting protrusions 105 are formed to protrude upward from each corner of the surface 101a, each having a shape corresponding to the shape of the corner (generally L-shaped in plan view). As shown in FIG. 10(B), when another container body 200 is stacked on top of the lid 100 attached to the container body 200, the operating unit 40 does not interfere with the upper container body 200, thereby preventing damage to the operating unit 40. Furthermore, the fitting protrusions 104, 105 of the lower lid 100 are fitted into fitting recesses 209 formed on the bottom surface of the upper container body 200 (FIG. 10(B)), so the stacked state is less likely to shift.

[0026] [Container body structure] As shown in FIG. 1(B), the container body 200 is formed in a rectangular box shape in a plan view with an open top. The container body 200 includes side walls 203, 203 facing each other in the front-rear direction (the front side wall 203 is not shown in the figure) and side walls 204, 204 facing each other in the left-right direction (the right side wall 204 is not shown in the figure). Each side wall 203, 204 is formed in a rectangular plate shape. Upper flange portions 201 are formed to protrude outward from the side edges facing each other in the front-rear direction of the container body 200 (the front upper flange portion 201 is not shown in the figure), and upper flange portions 210 are formed to protrude outward from the side edges facing each other in the left-right direction of the container body 200 (the right upper flange portion 210 is not shown in the figure). Each upper flange portion 201 has a second hole 202 formed therethrough in the vertical direction for inserting a lid fastener 1. The front second holes 202 are hidden by the lid 100. When the lid 100 is attached to the container body 200, each second hole 202 is formed at a position that faces each first hole 102 formed in the lid 100 in the up-down direction.

[0027] As shown in Fig. 2, the second hole 202 is formed in a rectangular shape in a plan view, with the left-right width being longer than the front-to-back width. Also, as shown in Fig. 8, the left-to-right width of the second hole 202 is formed wider than the left-to-right width of the first hole 102, and the left-to-right inner wall 102d (see Fig. 2) of the first hole 102 protrudes inward more than the left-to-right inner wall 202c (see Fig. 2) of the second hole 202, forming a step portion 101c at the boundary between the first hole 102 and the second hole 202. 7, when the lid 100 is attached to the container body 200, the back surface 101b of the lid body 101 and the surface of the upper flange portion 201 of the container body 200 come into contact with each other, and the first holes 102 and the second holes 202 are in communication with each other. Also, since each upper flange portion 201 of the container body 200 is covered by the side wall 205 of the lid 100, each second hole 202 is not exposed to the outside (see FIG. 1(A)).

[0028] As shown in FIG. 1(B), the container body 200 includes a lower flange portion 205 below each upper flange portion 201 (the front lower flange portion 205 is not shown in the figure), and a lower flange portion 206 below each upper flange portion 210 (the right lower flange portion 206 is not shown in the figure). Reinforcing ribs 211, 212 are formed between the opposing upper flange portions 201, 206, thereby increasing the strength of the upper flange portions 201, 206. Bottom flange portions 207, 207 are formed to protrude outward from opposing side edges in the front-to-rear direction of the bottom of the container body 200 (the front bottom flange portion 207 is not shown in the figure), and bottom flange portions 208, 208 are formed to protrude outward from opposing side edges in the left-to-right direction of the bottom of the container body 200 (the right bottom flange portion 208 is not shown in the figure). In this embodiment, the lid 100 and the container body 200 are each formed by injection molding using a synthetic resin such as polypropylene as a raw material.

[0029] [Lid fixing structure] (Schematic structure) As shown in Fig. 7, the lid fastener 1 is a lid fastener for fastening the lid 100 to the container body 200 by inserting it through a first hole 102 formed through the lid 100 and a second hole 202 formed in the container body 200. As shown in Figs. 3 to 5, the lid fastener 1 includes a first wall 10 and a second wall 20 spaced apart from each other in the front-to-rear direction, a connecting portion 30 formed to connect the lower ends of the first wall 10 and the second wall 20, an operating portion 40 formed on the first wall 10, a hook portion 50 formed on the second wall 20, and a pair of restricting portions 60 formed on the second wall 20 and the hook portion 50. The first wall 10 and the second wall 20 are each formed in a substantially plate-like shape when viewed from the front-to-rear direction, and the connecting portion 30 is formed in a downwardly bulging arc-shaped longitudinal cross section.

[0030] A space 80 is formed between the first wall 10 and the second wall 20, the distance between which narrows as it approaches the connecting portion 30 from the upper end of each wall. The space 80 is a space provided so that the first wall 10 can elastically deform toward the second wall 20. The first wall 10, the second wall 20, and the connecting portion 30 form the body 2 of the lid fastener 1. The vertical cross section of the body 2 is formed in a substantially V-shape. When a dividing line dividing the lid fastener 1 into two, left and right, is drawn vertically, the lid fastener 1 is configured to be line-symmetrical with respect to the dividing line when viewed from the front or rear. In this embodiment, the lid fastener 1 is formed by injection molding using a synthetic resin such as polypropylene as a raw material.

[0031] (Structure of the first wall) 3 and 5, first locking portions 16, 16 for locking to the container body 200 are formed to protrude forward on the outer surface 11 of the first wall 10 that constitutes the barrel 2. The first locking portions 16 are spaced apart in the left-right direction. Each first locking portion 16 is formed with an inclined portion 16a that is inclined obliquely upward from the outer surface 11 of the first wall 10, a vertical portion 16b that extends directly upward from the inclined portion 16a, and a locking surface 16c that extends horizontally from the vertical portion 16b to the outer surface 11. As shown in Fig. 7, each locking surface 16c is a surface that is locked to the back surface 201a of the upper flange portion 201 of the container body 200 when the body portion 2 of the lid fastener 1 is inserted into the second hole 202.

[0032] 7, a gap is formed between the locking surface 16c and the back surface 201a for the following reason: When the first locking portion 16 is released from the state where it is locked to the container body 200, the operating portion 40 is pressed backward to elastically deform (displace) the first wall 10 toward the second wall 20, but the first wall 10 does not move horizontally toward the second wall 20 but rotates clockwise around the connecting portion 30 as the center of rotation.Therefore, if the gap does not exist, the first locking portion 16 would not be able to move upward over the lower opening edge 202b (see FIG. 2) of the second hole 202.

[0033] 7, reinforcing ribs 17, 17 for reinforcing the strength of the first wall 10 are formed in the vertical direction on the inner surface 12 of the first wall 10. The reinforcing ribs 17 are formed to protrude from both left and right ends of the inner surface 12 of the first wall 10 toward the second wall 20 (rearward), and are spaced apart from each other in the horizontal direction. The reinforcing ribs 17 are respectively continuous with the respective connecting portions 43 of the operating unit 40, which will be described later. 3 to 8, a fitting opening 15 is formed in the center of the upper part of the first wall 10, penetrating in the front-to-rear direction, for fitting with a retaining protrusion 103 formed to protrude from the inner wall of the first hole 102. As shown in FIG. 8, fitting the retaining protrusion 103 into the fitting opening 15 prevents the lid fastener 1 from coming off the lid 100. Each of the first locking portions 16 is disposed below each of the fitting openings 15 on both sides. The separation width between each of the first locking portions 16 is wider than the width of the retaining protrusion 103. In other words, each of the first locking portions 16 is disposed so that when the body 2 is inserted into the first hole 102, the retaining protrusion 103 does not interfere with the first locking portion 16 and can pass between the first locking portions 16, 16 (see FIG. 7).

[0034] (Structure of the second wall) 4 and 10, second wall 20 constituting body 2 has through holes 29, 29 formed therein from outer surface 21 (FIG. 4) to inner surface 22 (FIG. 5) of second wall 20, which are capable of receiving reinforcing ribs 17 (FIG. 4) protruding from inner surface 12 (FIG. 5) of first wall 10, which is displaced toward second wall 20 when operating unit 40 is pressed toward second wall 20 (FIG. 4). The width of each through hole 29 in the left-right direction is wider than the width of reinforcing rib 17, and each through hole 29 is configured to smoothly receive reinforcing rib 17 without generating friction with reinforcing rib 17. The lower left side of the second wall 20 is formed with one lower side end 23 extending directly upward from the connecting portion 30, and one inclined portion 25 is formed slanting diagonally upward to the left from the one lower side end 23. One side end 27 is formed directly upward from the upper end of the one inclined portion 25. In other words, the lower left side of the second wall 20 is formed with one lower side end 23 and one inclined portion 25 to form one constricted portion 20a. Further, the other lower side end 24 extends directly upward from the connecting portion 30 at the lower right side of the second wall 20, and the other inclined portion 26 is formed slanting diagonally upward to the right from the other lower side end 24. The other side end 28 is formed directly upward from the upper end of the other inclined portion 26. In other words, the other lower side end 24 and the other inclined portion 26 form the other constricted portion 20b at the lower right side of the second wall 20.

[0035] Furthermore, since inclined portions 25, 26 are formed on the left and right sides of the lower portion of the second wall 20, when the body portion 2 is inserted into the first hole 102, the inclined portions 25, 26 come into contact with the upper opening edge 102b (FIG. 2) in the short direction of one of the upper opening edges of the first hole 102, thereby guiding the body portion 2 downward into the first hole 102. This makes it easy to attach the lid fastener 1 to the lid 100. In particular, when attaching the lid 100 to the container body 200 with the lid fastener 1 attached to the lid 100, the body 2 is difficult to see because of the lid 100, making it difficult to insert the body portion 2 into the second hole 202 of the container body 200. However, since the inclined portions 25, 26 come into contact with the upper opening edge 202a (FIG. 2) in the short direction of one of the opening edges of the second hole 202, the body portion 2 is guided downward into the second hole 202, thereby making it easy to attach the lid fastener 1 to the container body 200.

[0036] (Structure of the restrictor) As shown in Fig. 3, a left-side restricting portion 60 is formed from one side end 27 located on the left of the second wall 20 toward one side end 13 located on the left of the first wall 10. In addition, a right-side restricting portion 60 (Figs. 5 and 11(A)) is formed from the other side end 28 (Fig. 4) located on the right of the second wall 20 toward the other side end 14 (Fig. 3) located on the right of the first wall 10. Each restricting portion 60 is formed in a substantially plate shape when viewed from the left-right direction, and a second locking portion 63 for locking with the lid 100 is formed to protrude from each outer surface 61 of each restricting portion 60. As shown in Figure 3, the second locking portion 63 provided on the left-side regulating portion 60 has an inclined portion 63a that slopes diagonally upward from the outer surface 61 of the regulating portion 60, a vertical portion 63b that extends directly upward from this inclined portion 63a, and a locking surface 63c that extends horizontally from the upper end of this vertical portion 63b to the outer surface 61.

[0037] The second locking portion 63 has a width that is approximately the same as the front-to-rear width of the restricting portion 60, and a front end 63d thereof is flush with the side end 62 of the restricting portion 60. The second locking portion 63 provided on the right-side regulating portion 60 has a shape that is symmetrical to the second locking portion 63 provided on the left-side regulating portion 60, and as shown in Figure 5, its front end 63d is flush with the side end 62 of the left-side regulating portion 60. As shown in Figure 8, each locking surface 63c of each second locking portion 63 is the surface that locks onto the back surface of the step portion 101c formed at the boundary between the first hole 102 and the second hole 202, i.e., the back surface 101b of the lid 100, when the lid fastener 1 is inserted into the first hole 102 and the second hole 202.

[0038] As shown in Fig. 3, a substantially rectangular cutout portion 64 is formed in the lower portion of the left-side restricting portion 60 at the boundary with one of the inclined portions 25 of the second wall 20, and a second locking portion 63 is disposed above this cutout portion 64. Similarly, as shown in Fig. 11(A), a cutout portion 64 of the same shape is also formed in the lower portion of the right-side restricting portion 60, and a second locking portion 63 is disposed above this cutout portion 64 (Fig. 5). Furthermore, the side end opposite (rear) to the side end 62 of the right-side restricting portion 60 is also one side end 27 of the first wall 10, and they share a side end. Furthermore, the side end opposite (rear) to the side end 62 of the left-side restricting portion 60 is also the other side end 28 (FIG. 4) of the first wall 10, and they share a side end.

[0039] Of the restricting portion 60 arranged on the left side, the side end 62 located toward one side end 13 of the first wall 10 extends to a position coinciding with the outer surface 11 of the first wall 10 when viewed from the outer surface facing left of the restricting portion 60. Also, as shown in Figure 5, of the regulating portion 60 located on the right side, the side end 62 located toward the other side end 14 of the first wall 10 extends to a position that coincides with the outer surface 11 of the first wall 10 when viewed from the outer surface facing left of the regulating portion 60. In other words, the regulating portions 60 are formed from the side ends 27, 28 on both sides of the second wall 20 toward the side ends 13, 14 on both sides of the first wall 10, and of each regulating portion 60, 60, the side ends 62 located toward the side ends 13, 14 on both sides of the first wall 10 extend to a position that coincides with the outer surface 11 of the first wall 10 when viewed from the outer surface 61 of each regulating portion 60.

[0040] Furthermore, the left-side restricting portion 60 and one side edge 13 of the first wall 10 are spaced apart from each other, and the right-side restricting portion 60 and the other side edge 14 of the first wall 10 are spaced apart from each other. In other words, the restricting portions 60 and the first wall 10 are configured not to interfere with each other. This is for the following reason: when removing the lid fastener 1 engaged with the lid 100, it is necessary to elastically deform each restricting portion 60 inward to release each second engaging portion 63 from being engaged with the lid 100. Furthermore, because the restricting portions 60 and the first wall 10 are configured not to interfere with each other, even if the operating portion 40 is pressed when removing the lid fastener 1 from the container body 200, the pressing force is unlikely to act on the restricting portions 60, resulting in stable operability. The shape of the second wall 20 is devised so that the restriction portions 60 and the side ends 13, 14 of the first wall 10 are spaced apart from each other. That is, in the second wall 20, the width between one lower side end 23 and the other lower side end 24 is approximately the same as the width of the first wall 10, but the width above the one lower side end 23 and the other lower side end 24 is wider than that of the second wall 20. As a result, the restriction portions 60 and the side ends 13, 14 of the first wall 10 are spaced apart from each other, and the restriction portions 60 do not interfere with the side ends 13, 14 of the first wall 10 (FIG. 3), allowing the restriction portions 60 extending forward from the side ends 27, 28 of the second wall to elastically deform inward.

[0041] Each restricting portion 60 is formed so that the front-to-rear width gradually narrows from the upper end to the lower end so that the lid fastener 1 can be easily inserted into the first hole 102 and the second hole 202. In this embodiment, each restricting portion 60 is formed in a shape such that, when the lid fastener 1 is inserted into the first hole 102 and the second hole 202, the front and rear ends of each restricting portion 60, i.e., each side end 62 and each side end opposite each side end 62 (one side end 27 and the other side end 28 of the second wall 20), come into contact with the front inner wall 102a and the rear inner wall 102e of the first hole 102, as shown in FIG. In this way, when the body 2 of the lid fastener 1 is inserted into the first hole 102 and the second hole 202, each regulating portion 60 is positioned in the first hole 102 and the second hole 202, and the front and rear side ends (62, 62, 27, 28) of each regulating portion 60 are in contact with the inner walls 102a, 102e of the first hole 102, thereby regulating the movement of the lid fastener 1.

[0042] (Hook structure) As shown in FIGS. 3 and 4 , the hook portions 50 are formed to protrude outward from the upper end of the second wall 20 and the upper ends of the restriction portions 60. In other words, the hook portions 50 are flange portions formed to protrude outward from the upper end of the second wall 20 and the upper ends of the restriction portions 60. The hook portions 50 are formed to have a generally U-shape in plan view. The hook portions 50 include a rear hook portion 51 formed to protrude rearward from the upper end of the second wall 20, one hook portion 52 formed to protrude leftward from the upper end of one (left) restriction portion 60, and another hook portion 53 formed to protrude rightward from the upper end of the other (right) restriction portion 60, and the rear hook portion 51, one hook portion 52, and the other hook portion 53 are continuous. A hook surface 55 for hooking onto the surface 101 a of the lid main body 101 is formed on the back surface of the hook portion 50 ( FIG. 5 ).

[0043] Additionally, recesses 54, 54 are formed on the inner surface of the rear hook portion 51, which can accommodate the reinforcing ribs 17 ( FIG. 4 ) protruding from the inner surface 12 ( FIG. 5 ) of the first wall 10, which is displaced toward the second wall 20 when the operating portion 40 is pressed. Each recess 54 has an opening facing the opposing reinforcing rib 17, and its bottom wall faces rearward. The lower ends of the bottom walls of each recess 54 are shared with the upper ends of the through holes 29, and the spaces formed inside each recess 54 are continuous with the spaces formed in the through holes 29. In other words, each recess 54 is continuous with the through holes 29, and each recess 54 can accommodate the upper end of each reinforcing rib 17, and each through hole 29 can accommodate the portion of each reinforcing rib 17 that is not accommodated by the recess 54. In other words, each recess 54 formed in the rear hook portion 51 and each through-hole 29 formed in the second wall 20 can receive each reinforcing rib 17. The opening width of each recess 54, like the opening width of each through-hole 29, is wider than the left and right width of the reinforcing rib 17, and is configured to smoothly receive the reinforcing rib 17 without generating friction with the reinforcing rib 17. Each reinforcing rib 17 is an example of "at least a part of the portion of the first wall that faces the second wall and that is displaced toward the second wall" according to the present invention. Each recess 54 and each through-hole 29 is an example of "receiving portion" according to the present invention.

[0044] 6 to 11, when the body 2 of the lid fastener 1 is inserted into the first hole 102, the hook portion 50 comes into contact with portions of the surface 101a of the lid main body 101 that are continuous with the left, right, and rear edges of the first hole 102, and is hooked onto the lid 100. This prevents the second wall 20 and each restricting portion 60 from dropping downward from the first hole 102, stabilizing the attached state of the lid fastener 1. Furthermore, because the hook portion 50, second wall 20, and each restricting portion 60 are formed continuously, the rigidity of the portion formed by the second wall 20 and each restricting portion 60 is increased, thereby increasing the strength.

[0045] (Structure of the operation unit) As shown in FIGS. 3 to 5 , an operating unit 40 is provided at the upper end of the first wall 10. The operating unit 40 is configured to displace the first wall 10 toward the second wall 20 when pressed toward the second wall 20. The operating unit 40 includes an extending portion 41, a pressing operation portion 42, and a connecting portion 43. The extending portion 41 extends horizontally outward (forward in FIG. 3 ) from the upper end of the first wall 10. The pressing operation portion 42 is a portion that is pressed and extends directly upward from the front end of the extending portion 41. A substantially flat pressing operation surface 44 is formed on the outer surface (front surface in FIG. 3 ) of the pressing operation portion 42. A plurality of non-slip portions 42a are formed on the pressing operation surface 44. In this embodiment, each non-slip portion 42a is formed in a strip shape extending in the left-right direction and protrudes from the pressing operation surface 44. The non-slip portions 42a are arranged vertically and spaced apart from each other. Furthermore, pressing operation portion 42 is located forward of front end 50a (FIG. 3) of hook portion 50. As a result, even if a device such as a robot arm moves vertically away from pressing operation portion 42 when pressing operation portion 42, the front end 50a of hook portion 52 is not pressed by the pressure from the device, and there is no risk of hook portion 50 being damaged.

[0046] 4, each connecting portion 43 is formed to protrude rearward from the vicinity of the left and right ends of the inner surface 45 of the pressing operation portion 42, and is formed to connect the pressing operation portion 42 and the extending portion 41. This increases the strength of the pressing operation portion 42, and eliminates the risk of the pressing operation portion 42 being damaged when pressed rearward. Furthermore, each connecting portion 43 is continuous with each reinforcing rib 17 formed on the inner surface (FIG. 5) of the first wall 10. This increases the rigidity and strength of the portion formed by the operating portion 40 and the first wall 10. In this embodiment, each connecting portion 43 is formed in the shape of a right-angled triangle when viewed from the left and right direction.

[0047] [How to use the lid fastener] First, the lid fastener 1 is attached to the lid 100. When the body 2 of the lid fastener 1 is inserted into the first hole 102 of the lid body 101, the lower part of the outer surface 11 of the first wall 10 comes into contact with the tip of the retaining projection 103 (FIG. 8). Then, as the body 2 is further inserted, the first wall 10 is pressed toward the second wall 20 by the retaining projection 103, elastically deforming (displacing) toward the second wall 20, and the reinforcing ribs 17 protruding from the rear of the first wall 10 are received in the recesses 54 of the hook portion 50 and the through-holes 29 of the second wall 20. Then, as the body 2 is further inserted, the retaining projection 103 fits into the fitting opening 15 formed in the first wall 10 (FIG. 4).

[0048] Furthermore, as described above, when the body 2 of the lid fastener 1 is inserted into the first hole 102 of the lid main body 101, the outer surfaces 61 of the restricting portions 60 come into contact with the inner walls 102d (see FIG. 2) in the left-right direction of the first hole 102. Then, as the insertion of the body 2 proceeds further, the inclined portions 63a (see FIG. 8) of the second locking portions 63 of each restricting portion 60 come into contact with the opening edge in the short direction of the first hole 102, which is the opening edge on the surface 101a side of the lid main body 101, i.e., the upper opening edge 102b (see FIG. 2). Then, as the insertion of the body 2 proceeds further, the inclined portions 63a are pressed inward (longitudinal direction) of the first hole 102 by the upper opening edge 102b, and each restricting portion 60 is elastically deformed (displaced) inward of the first hole 102. Then, when the vertical portions 63b of each second locking portion 63 climb over the opening edge in the short direction of the first hole 102, which is the opening edge on the back surface 101b side of the lid main body 101, that is, the lower opening edge 102c (see FIG. 2), each of the restricting portions 60 that have been elastically deformed inward returns to the posture before elastic deformation due to their own elastic force, and each locking surface 63c of each second locking portion 63 is locked to the step portion 101c. In other words, each of the second locking portions 63 is locked to the lid 100. Furthermore, the locking surface 46 of the operating unit 40 comes into contact with the surface 101a of the lid main body 101. That is, the operating unit 40 comes into a state of being locked to the lid 100. Furthermore, the hooking surface 55 of the hooking portion 50 comes into contact with the surface 101a of the lid main body 101. That is, the hooking portion 50 comes into a state of being hooked on the lid 100. As described above, the lid fastener 1 can be attached to the lid 100 simply by inserting the body 2 of the lid fastener 1 into the first hole 102 of the lid 100, without having to press the operating part 40.

[0049] Next, the lid 100 with the lid fastener 1 attached is attached to the container body 200. The lid 100 is fitted to the container body 200 so that the body 2 of the lid fastener 1 is inserted into the second hole 202 of the container body 200, and the lid 100 is pressed downward. At this time, the inclined portions 16a of the first locking portions 16 formed on the outer surface 11 of the first wall 10 are pressed by the upper opening edge 202f (FIGS. 2 and 7) of the longitudinal opening edges of the second hole 202, and as shown in the cross section indicated by the solid line in FIG. 10(A), the first wall 10 is elastically deformed (displaced) toward the second wall 20, and the reinforcing ribs 17 protruding from the rear of the first wall 10 are received in the recesses 54 of the hook portion 50 and the through-holes 29 of the second wall 20.

[0050] As the body 2 is further inserted, the vertical portions 16b of the first locking portions 16 move downward over the lower opening edge 202b (FIGS. 2 and 7) of the longitudinal opening edges of the second hole 202, and as shown in the dashed line cross section in FIG. 10(A), the first wall 10, which had been elastically deformed toward the second wall 20, returns to its original position before elastic deformation due to its own elastic force. As a result, the locking surfaces 16c of the first locking portions 16 face the back surfaces 201a of the upper flange portions 201 of the container body 200. In other words, the first locking portions 16 are locked to the container body 200. As a result, the lid 100 and the container body 200 are fixed by the lid fastener 1.

[0051] Furthermore, when removing the lid 100 from the container body 200, the pressing operation portion 42 of the operation portion 40 is pressed toward the second wall 20, causing the first wall 10 to elastically deform (displace) toward the second wall 20. At this time, the reinforcing ribs 17 of the first wall 10 are received in the recesses 54 of the hook portion 50 and the through-holes 29 of the second wall 20, respectively, and the state in which the first locking portions 16 are locked to the container body 200 is released. Then, when the lid 100 is lifted upward while maintaining this state, the body portion 2 of the lid fastener 1 is pulled upward through the second hole 202 of the container body 200, and the lid 100 is removed from the container body 200. Furthermore, when each first locking portion 16 is released from the state in which it is locked to the container body 200, the anti-slip protrusion 103 temporarily detaches from the mating opening 15, but when the first wall 10 returns to its position before elastic deformation due to its own elastic force, the anti-slip protrusion 103 is engaged with the mating opening 15, and the lid fixing device 1 is attached to the lid 100.

[0052] Furthermore, when removing the lid fastener 1 from the lid 100, the pressing operation portion 42 is pressed to elastically deform the first wall 10 toward the second wall 20, thereby releasing the removal prevention protrusion 103 from the fitting opening 15. At the same time, each of the restricting portions 60 is elastically deformed inward (toward the side ends 13, 14 of the first wall 10), thereby releasing the locking state between each of the second locking portions 63 and the lid 100. For example, each of the restricting portions 60 can be elastically deformed inward by pinching each outer surface 61 of each of the restricting portions 60 with fingers. Then, the lid fastener 1 is pulled upward from the first hole 102.

[0053] [Stacking lids] As shown in Figure 11, the lid fastener 1 of this embodiment is configured so that the lids 100 can be stacked vertically while attached to them. When stacked vertically, the lower end of the body 2 of the lid fastener 1 attached to the upper lid 100 is received in the space 80 formed between the first wall 10 and the second wall 20 of the lid fastener 1 attached to the lower lid 100. In other words, the lid fastener 1 attached to the upper lid 100 and the lid fastener 1 attached to the lower lid 100 do not interfere with each other. Therefore, when the lids 100 are stacked one above the other with the lid fastener 1 attached to them, the portion made up of the stacked lids does not become bulky. In other words, storage efficiency can be improved when storing a plurality of lids 100 stacked.

[0054] [Effects of the embodiment] (1) According to the lid fastener 1 of the above-described embodiment, when the first wall 10 is elastically deformed (displaced) toward the second wall 20 by pressing the operating portion 40 provided on the first wall 10, each reinforcing rib 17 (FIG. 7) of the first wall 10 that protrudes toward the second wall 20 is received in each recess 54 of the hook portion 50 and each through hole 29 of the second wall 20 (FIG. 10(A)). Therefore, compared to a configuration in which the recesses 54 of the hook portion 50 and the through holes 29 of the second wall 20 are not formed, the stroke length, which is the length by which the first wall 10 can be displaced in the direction of the second wall 20, can be increased, and the engagement length W (Figure 9) of each first locking portion 16 with the container body 200 can be increased accordingly, thereby strengthening the fixing force of the lid fixing device 1.

[0055] (2) Furthermore, according to the above-described embodiment of the lid fastener 1, the recesses 54 of the hook portion 50 are continuous with the through holes 29 of the second wall 20. Therefore, when the reinforcing ribs 17 of the first wall 10 are received in the recesses 54 and the through holes 29, the hook portion 50 does not obstruct the reception of the reinforcing ribs 17, thereby ensuring the stroke length of the first wall 10.

[0056] (3) Furthermore, according to the lid fastener 1 of the above-described embodiment, when the lid fastener 1 is inserted into the first hole 102 and the second hole 202, each regulating portion 60 is positioned in the first hole 102 and the second hole 202 (FIG. 9), and the movement of the lid fastener 1 can be regulated. Therefore, when the operating portion 40 is pressed, the lid fastener 1 does not move, and a stable pressing operation can be performed. Furthermore, of each restricting portion 60, each side end 62 located toward the side ends 13, 14 on both sides of the first wall 10 extends to a position that coincides with the outer surface 11 of the first wall 10 when viewed from the outer surface 61 of each restricting portion 60. In other words, when viewed from the outer surface 61 of each restricting portion 60, the outer surface 11 of the first wall 10 does not protrude from each side end 62 of each restricting portion 60 (FIG. 9). As a result, when the lid fastener 1 is inserted into the first hole 102 and the second hole 202, each side end 62 of each restricting portion 60 comes into contact with the inner walls 102a, 102e of the first hole 102 (FIG. 9). This prevents the structural portion formed by the first wall 10, the second wall 20, and the connecting portion 30 from being elastically deformed by stress from the inner walls 102a, 102e of the first hole 102. This prevents fatigue of the structural portion due to elastic deformation, thereby extending the life of the lid fastener 1.

[0057] (4) Furthermore, according to the lid fastener 1 of the above-described embodiment, a portion of the hook portion 50 is continuous with the upper end of each regulating portion 60 and is formed to protrude outward from the upper end of each regulating portion 60 (Figures 3 and 4). This increases the rigidity of the lid fastener 1 and strongly restricts movement, allowing the operating portion 40 to be pressed and operated in an even more stable state. Furthermore, since the second locking portion 63 that locks onto the back surface 101b of the lid 100 is formed on each outer surface 61 of each restricting portion 60, the lid fastener 1 can be attached to the lid 100 when the lid 100 is removed from the container body 200. As a result, by attaching the lid 100 to the container body 200 with the lid fastener 1 attached to the lid 100, the lid 100 and the container body 200 can be fixed together. Furthermore, since a second locking portion that locks to the back surface of the lid is formed on the outer surface of each restricting portion, the locking force between the lid fastener and the lid can be strengthened.Furthermore, it is also possible to prevent the lid fastener 1 from being lost separately.

[0058] (5) Furthermore, according to the lid fastener 1 of the above-described embodiment, the pressing operation portion 42, which is the portion to be pressed, extends directly upward from the extension portion 41 that extends forward from the upper end of the first wall 10 (FIGS. 3 to 5), so there is nothing to obstruct the pressing operation, making it easy to perform the pressing operation. Furthermore, since the connecting portion 43 is provided so as to connect the pressing operation portion 42 and the extension portion 41, the strength of the pressing operation portion 42 can be increased, and there is no risk of the pressing operation portion 42 being damaged during the pressing operation.

[0059] (6) Furthermore, according to the lid fastener 1 of the above-described embodiment, reinforcing ribs 17, 17 for reinforcing the first wall 10 are formed on the inner surface 12 of the first wall 10 (FIG. 7), thereby increasing the strength of the first wall 10. Furthermore, each reinforcing rib 17 is continuous with the connecting portion 43 formed to connect the pressing operation portion 42 and the extension portion 41, thereby also increasing the strength of the portion consisting of the pressing operation portion 42 and the first wall 10. Furthermore, each recess 54 of the hook portion 50 and each through-hole 29 of the second wall 20 can receive each reinforcing rib 17. Therefore, since each reinforcing rib 17 is formed on the inner surface 12 of the first wall 10, the stroke length of the first wall 10 relative to the second wall 20 is not shortened, and the engagement allowance W (FIG. 9) of each first engaging portion 16 can be increased, thereby increasing the fixing force of the lid fastener 1.

[0060] (7) Furthermore, according to the lid fastener 1 of the above-described embodiment, the body 2 has a generally V-shaped longitudinal cross section. Therefore, even if the front-to-rear width of the second hole 202 is narrower than the front-to-rear width of the first hole 102, the lower part of the body 2 can be inserted into the second hole 202 to fasten the lid 100 to the container body 200. In other words, the front-to-rear width of the second hole 202 may be narrower than the front-to-rear width of the first hole 102. Furthermore, since the waist portions 20a and 20b are formed in the body portion 20, the width of the lower portion of the body portion 20 in the left-right direction of the lid fastener 1 is also reduced, so that when the lids 100 are stacked one on top of the other with the lid fastener 1 attached to them, the body portion 20 of the lid fastener 1 attached to the upper lid 100 can be easily accommodated in the V-shaped space 80 of the lid fastener 1 attached to the lower lid 100.

[0061] (8) According to the lid fastener 1 of the above-described embodiment, it is possible to provide a lid fastener that can increase the fastening force.

[0062] Other Embodiments (1) The height of each of the restricting portions 60 can be shortened so that each restricting portion 60 is positioned only in the first hole 102, thereby restricting the movement of the lid fastener 1. (2) Each restricting portion 60 can be configured so that its side ends (62, 62, 27, 28) come into contact with the inner walls (102a, 102e, 202d, 202e) of the first hole 102 and the second hole 202, thereby restricting the movement of the lid fastener 1. (3) Each regulating portion 60, 60 can be formed so that each side end 62 located toward the side ends 13, 14 on both sides of the first wall 10 extends to a position beyond the outer surface 11 of the first wall 10 when viewed from the outer surface 61 of each regulating portion 60, thereby preventing fatigue of the first wall 10 due to elastic deformation. (4) The front-to-rear widths of the portions of each restricting portion 60 facing the first hole 102 and the second hole 202 may be made the same, and the front and rear ends of each restricting portion 60 may be configured to contact the inner walls 102a, 102e of the first hole 102 and the inner walls 202d, 202e of the second hole 202. Alternatively, protrusions may be formed on the front and rear ends of each restricting portion 60, and the protrusions may be configured to contact at least one of the inner walls 102a, 102e of the first hole 102 and the inner walls 202d, 202e of the second hole 202. Alternatively, each restricting portion 60 may be configured to be disposed in proximity to the first hole 102 and the second hole 202 without contacting them.

[0063] (5) The hook portions can also be formed on the first wall 10. For example, the hook portions can be formed by protruding outward from the upper ends of the side edges 13, 14 on both sides of the first wall 10. Also, the hook portions can be formed on both the first wall 10 and the second wall 20. (6) If the slip-out prevention protrusion 103 is not provided, the fitting opening 15 does not need to be formed in the first wall 10. Also, the first locking portion 16 can be formed continuously in the left-right direction (width direction) on the outer surface 11 of the first wall 10 without being divided into two.

[0064] (7) Instead of the through holes 29 formed in the second wall 20, recesses corresponding to the shapes of the through holes 29 may be formed in the second wall 20. (8) The first wall 10 and the second wall 20 may be formed parallel to each other, so that the longitudinal cross section of the body 2 is substantially U-shaped. (9) The first wall 10 can be formed so that it is higher than the second wall 20, and the part that is higher than the second wall 20 can be used as the operating part. In this case, the operating part can be formed so as to be perpendicular to the surface 101a of the lid 100, thereby improving operability. [Explanation of symbols]

[0065] 1 Lid fixture 10 The First Wall 11 Exterior 12 Inner 13 One side edge 14 Other side edge 15 Mating opening 16 First locking portion 17 Reinforcing rib 20 The Second Wall 21 Exterior 22 Inner 27 One side edge 28 Other side edge 29 Through holes 30 Connection 40 Control section 41 Extension part 42 Pressing operation section 43 Connecting part 50 Hook 54 Recess 60 Regulatory Department 61 External surface 62 side edge 63 Second locking portion 80 space 100 lids 101 Lid body 101a surface 102 First Hole 103 Anti-slip protrusion 200 container body 201 Upper flange 202 Second Hole

Claims

1. A lid fastener for fastening a lid to a container body by being inserted through a first hole formed through the lid and a second hole formed in the container body, a first wall and a second wall spaced apart from one another; a connection portion formed to connect the lower ends of the first wall and the second wall; a first engaging portion formed on an outer surface of the first wall and engaged with the container body; a hook portion formed on at least one of the first wall and the second wall and hooked onto the lid; an operating portion provided on the first wall and configured to displace the first wall toward the second wall by being pressed toward the second wall, a receiving portion capable of receiving at least a part of a portion of the first wall facing the second wall, the portion being displaced toward the second wall by the pressing operation of the operating portion, is formed at least on the second wall; a restricting portion for restricting movement of the lid fastener by being disposed in at least one of the first hole and the second hole, the restricting portion being formed from both side ends of the second wall toward both side ends of the first wall, A lid fixing device characterized in that among the regulating portions, each side end located toward the side ends on both sides of the first wall extends to a position that coincides with the outer surface of the first wall when viewed from the outer surface of each regulating portion, or to a position that exceeds the outer surface of the first wall.

2. A lid fastener for fastening a lid to a container body by being inserted through a first hole formed through the lid and a second hole formed in the container body, a first wall and a second wall spaced apart from one another; a connection portion formed to connect the lower ends of the first wall and the second wall; a first engaging portion formed on an outer surface of the first wall and engaged with the container body; a hook portion formed on at least one of the first wall and the second wall and hooked onto the lid; an operating portion provided on the first wall and configured to displace the first wall toward the second wall by being pressed toward the second wall, a receiving portion capable of receiving at least a part of a portion of the first wall facing the second wall, the portion being displaced toward the second wall by the pressing operation of the operating portion, is formed at least on the second wall; a restricting portion for restricting movement of the lid fastener by being disposed in at least one of the first hole and the second hole, the restricting portion being formed from both side ends of the second wall toward both side ends of the first wall, When the restricting portion is disposed in at least one of the first hole and the second hole, an outer surface of the restricting portion contacts an inner wall of at least one of the first hole and the second hole that is located in a direction from the first wall to the second wall; A lid fixing device characterized in that a side end of the regulating portion located on the side of the first wall contacts an inner wall of at least one of the inner walls of the first hole and the second hole that is located in a direction along the first wall and the second wall.

3. A lid fastener for fastening a lid to a container body by being inserted through a first hole formed through the lid and a second hole formed in the container body, a first wall and a second wall spaced apart from one another; a connection portion formed to connect the lower ends of the first wall and the second wall; a first engaging portion formed on an outer surface of the first wall and engaged with the container body; a hook portion formed on at least one of the first wall and the second wall and hooked onto the lid; an operating portion provided on the first wall and configured to displace the first wall toward the second wall by being pressed toward the second wall, a receiving portion capable of receiving at least a part of a portion of the first wall facing the second wall, the portion being displaced toward the second wall by the pressing operation of the operating portion, is formed at least on the second wall; a restricting portion for restricting movement of the lid fastener by being disposed in at least one of the first hole and the second hole, the restricting portion being formed from both side ends of the second wall toward both side ends of the first wall, A lid fastener, characterized in that the regulating portion is spaced apart from both side ends of the first wall.

4. A lid fastener for fastening a lid to a container body by being inserted through a first hole formed through the lid and a second hole formed in the container body, a first wall and a second wall spaced apart from one another; a connection portion formed to connect the lower ends of the first wall and the second wall; a first engaging portion formed on an outer surface of the first wall and engaged with the container body; a hook portion formed on at least one of the first wall and the second wall and hooked onto the lid; an operating portion provided on the first wall and configured to displace the first wall toward the second wall by being pressed toward the second wall, a receiving portion capable of receiving at least a part of a portion of the first wall facing the second wall, the portion being displaced toward the second wall by the pressing operation of the operating portion, is formed at least on the second wall; A lid fastener, characterized in that the first wall and the second wall are arranged side by side in a short direction of the first hole and the second hole.

5. The lid fastener according to any one of claims 1 to 4, characterized in that a portion of the receiving portion is formed on the hook portion and is continuous with the receiving portion formed on the second wall.

6. A regulating portion for regulating movement of the lid fixing device by being disposed in at least one of the first hole and the second hole is formed from both side ends of the second wall toward both side ends of the first wall, A part of the hook portion is The recess is formed so as to be continuous with the upper end of each of the restriction portions and to protrude outward from the upper end of each of the restriction portions, 6. The lid fastener according to claim 1, wherein a second locking portion that is locked to a rear surface of the lid is formed on an outer surface of each of the restricting portions.

7. The operation unit includes: an extension portion extending outward from an upper end of the first wall; A pressing operation portion that extends upward from the extension portion and is a portion to be pressed; A connecting portion formed to connect the pressing operation portion and the extension portion is provided, At least a portion of the first wall that is displaced toward the second wall and faces the second wall is a reinforcing rib formed on an inner surface of the first wall for reinforcing the first wall, the reinforcing rib being continuous with the connecting portion, 7. The lid fastener according to claim 1, wherein the receiving portion is a recess or a through hole capable of receiving the connecting portion or the reinforcing rib.

8. The body portion constituted by the first wall, the second wall, and the connecting portion is The longitudinal section is formed in a substantially V-shape, A space is formed between the first wall and the second wall, the space narrowing as the space approaches the connection portion from the upper end of each wall, A lid fixing device as described in any one of claims 1 to 7, characterized in that when the lids to which the lid fixing device is attached are stacked one above the other, the lower end of the lid fixing device attached to the upper lid can be received in the space of the lid fixing device on the lower lid.

Images