Refrigerating box

Abstract

The invention provides a refrigerating box. The refrigerator (1) is provided with a box body (2), a cover body (4), a shaft part (61), an operation body (62) and a groove part (63). The case has a first opening (23). The cover body is used for opening and closing the first opening part. The shaft portion (61) has a lock portion (61b) and is rotatably supported by the cover body. The operating body is fixed to the shaft portion and rotates integrally with the shaft portion about the shaft portion. The groove portion has a second opening portion (63c) that opens in an intersecting direction that intersects the shaft portion, and is fixed to the case body. The lock portion is disposed in the groove portion. The locking part can adopt a locking posture and an unlocking posture according to the operation of the operation body, and the locking posture refers to a posture in which the movement of the locking part in the intersecting direction is limited by the second opening part; the unlocking posture refers to a posture in which the locking part can be separated from the groove part (63) through the second opening part (63c). Therefore, the cover body can be opened and closed relative to the box body through a simple structure.

Description

Technical Field

[0001] The present invention relates to a cooler box. Background Art

[0002] In the prior art, there is known a refrigerator having a box body, a cover body and an opening and closing mechanism, wherein the box body has an opening; the cover body is used to open and close (open / close) the opening of the box body; and the opening and closing mechanism is used to open and close the cover body relative to the box body (see patent document 1). [Prior art literature] [Patent Document]

[0003] Patent Document 1: Japanese Patent Publication No. 2019-80532 Summary of the invention [Technical problem to be solved by the invention]

[0004] In the prior art refrigerator, the structure of the opening and closing mechanism is complex and the number of parts is large.

[0005] The technical problem to be solved by the present invention is to provide a refrigerator in which a cover can be opened and closed relative to a box body with a simple structure. [Technical solutions for solving technical problems]

[0006] The first embodiment of the present invention provides a refrigerator having a housing, a cover, a shaft, an operating body, and a groove. The housing has a first opening. The cover is used to open and close the first opening. The shaft has a locking portion and is rotatably supported on the cover. The operating body is fixed to the shaft and rotates integrally with the shaft around the shaft. The groove has a second opening that opens in a direction intersecting the shaft and is fixed to the housing. The locking portion is disposed in the groove. The locking portion can take a locking posture and an unlocking posture according to the operation of the operating body, wherein the locking posture refers to a posture in which the movement of the locking portion in the intersecting direction is restricted by the second opening; and the unlocking posture refers to a posture in which the locking portion can be disengaged from the groove through the second opening.

[0007] In the refrigerator, the operating body is fixed to the shaft portion and rotates integrally with the shaft portion around the shaft portion. In addition, the locking portion of the shaft portion can take a locking posture and an unlocking posture according to the rotation of the operating body. Therefore, for example, the operating body, the shaft portion and the locking portion can be formed as a single component to open and close the cover. In addition, since the movement of the locking portion is limited by the second opening portion, the state in which the cover is locked can be achieved with a simple structure. As a result, a refrigerator can be provided in which the cover can be opened and closed relative to the box body with a simple structure.

[0008] In the second aspect of the present invention, the lock portion of the refrigerator has a semicircular arc surface that engages with the groove portion. In this case, the lock portion can be formed with a simple structure.

[0009] On the basis of the second aspect of the present invention, the lock portion of the refrigerator of the third aspect further has a D-shaped cross section. In this case, the lock portion can be easily disengaged from the groove portion in the unlocking posture.

[0010] In any one of the first to third aspects of the present invention, a fourth aspect of the refrigerator is characterized in that the operating body is disposed on the upper surface of the lid body. In this case, the lid body can be opened and closed from the upper surface of the lid body.

[0011] In any one of the first to fourth aspects of the present invention, the second opening of the refrigerator of the fifth aspect opens in the same direction as the first opening. In this case, the locking portion can be easily disengaged from the groove.

[0012] Based on any one of the first to fifth embodiments of the present invention, the refrigerator of the sixth embodiment further comprises an opening and closing mechanism, which causes the cover to rotate around the shaft portion, and the cover has a holding portion, and when the cover is opened around the shaft portion by the opening and closing mechanism, the holding portion is held on the outer peripheral surface of the groove portion. In this case, a refrigerator in which the cover can be opened on both sides relative to the box body can be realized with a simple structure.

[0013] In the seventh aspect of the present invention, based on the sixth aspect, one of the box body and the cover of the refrigerator has a stopper member, and when the cover is opened about the axis by the opening and closing mechanism, the stopper member limits the rotation of the cover. In this case, the opening angle of the cover can be limited by the stopper member.

[0014] In the refrigerator according to the eighth aspect of the present invention, the stopper is disposed on the outer peripheral surface of the groove and extends in a direction away from the locking portion. In this case, the stopper can be realized with a simple structure.

[0015] On the basis of any one of the first to eighth schemes of the present invention, the refrigerator of the ninth scheme further comprises an opening and closing mechanism and a limiting part, wherein the opening and closing mechanism is used to rotate the cover body around the shaft portion; when the cover body rotates around the shaft portion through the opening and closing mechanism, the limiting part limits the locking part from disengaging from the groove portion, and the limiting part can move between an engaging position and a non-engaging position according to the rotation of the cover body, wherein the engaging position refers to a position where the limiting part can engage with the outer peripheral surface of the groove portion, and the non-engaging position refers to a position where the limiting part does not engage with the outer peripheral surface of the groove portion. In this case, the limiting part can prevent the cover body from falling off from the box body when the cover body rotates around the shaft portion through the opening and closing mechanism.

[0016] On the basis of any one of the first to ninth schemes of the present invention, the refrigerator of the tenth scheme further has a holding mechanism, which can hold the operating body, and the holding mechanism has a housing, a first engaging portion, a pressing component and a force-applying component. The housing is arranged on either side of the cover body and the shaft, and opens toward the other side of the cover body and the shaft. The first engaging portion is arranged on the outer peripheral surface of the other side of the cover body and the shaft. The pressing component is arranged on the housing in a manner that it can move forward and backward toward the other side of the cover body and the shaft, and engages with the first engaging portion when the operating body is located at any position of the locking position corresponding to the locking posture or the unlocking position corresponding to the unlocking posture. The force-applying component is arranged in the housing, and is used to apply force to the pressing component to the shaft. In this case, the operating body can be held in the locked position or the unlocked position by the holding mechanism, and the lock feeling can be adjusted.

[0017] On the basis of the tenth scheme of the present invention, the refrigerator of the eleventh scheme is that the holding mechanism further has a second engaging portion, the second engaging portion is located at a position separated from the first engaging portion in the circumferential direction of the shaft portion, and is arranged on the outer peripheral surface of the other of the cover body and the shaft portion, and the pressing member engages with the first engaging portion when the operating body is in the locked position, and engages with the second engaging portion when the operating body is in the unlocked position. In this case, the operating body can be held in the locked position and the unlocked position by the holding mechanism, and the locking feel can be adjusted.

[0018] In the 12th aspect of the refrigerator according to the 10th aspect or the 11th aspect of the present invention, the storage portion is provided on the lid body, and the first engaging portion is provided on the shaft portion. [Effects of the invention]

[0019] According to the present invention, it is possible to provide a refrigerator in which a lid can be opened and closed with respect to a box body with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial stereoscopic diagram of a refrigerator. Figure 2 yes Figure 1 II-II sectional view. Figure 3 yes Figure 1 III-III bottom view. Figure 4 It is a partially cutaway perspective view of the refrigerator when the locking portion is in a locked position. Figure 5 It is a partially cutaway perspective view of the refrigerator when the locking portion is in an unlocked position. Figure 6 It is a diagram for explaining a state in which the locking portion is disengaged from the groove portion. Figure 7 It is a figure for demonstrating the stopper part. Figure 8 It is a diagram for explaining a restriction unit. Fig. 9 It is a diagram for explaining a restriction unit. Fig.10 It is a diagram for explaining the holding mechanism. Fig.11 It is a diagram for explaining the holding mechanism. [Explanation of Reference Numerals] 1: Refrigerator; 2: Box body; 23: First opening; 24: Stopper; 4: Cover; 46: Holding portion; 6A, 6B: Opening and closing mechanism; 61: Shaft; 61b: Locking portion; 61c: Arc surface; 61d: D-shaped section; 62: Operating body; 63: Groove; 63c: Second opening; 8: Limiting portion; 70: Holding mechanism; 71: Receiving portion; 72: First engaging portion; 73: Second engaging portion; 74: Pressing member; 75: Force-applying member. DETAILED DESCRIPTION

[0021] like Figures 1 to 3 As shown, a refrigerator 1 according to an embodiment of the present invention includes a box body 2 , a lid body 4 , a pair of opening and closing mechanisms 6 , and a restricting portion 8 .

[0022] The box body 2 is formed into a rectangular box shape and has a storage space inside for storing articles. The box body 2 is made of resin and contains a heat insulating material inside.

[0023] The box body 2 has a bottom (not shown), a pair of long walls 21, a pair of short walls 22, and a first opening 23. The bottom has a substantially rectangular shape. The pair of long walls 21 extend upward from the long sides of the bottom. In the following description, one of the pair of long walls 21 is referred to as the first long wall 21a, and the other of the pair of long walls 21 is referred to as the second long wall 21b. The pair of short walls 22 extend upward from the short sides of the bottom. The first opening 23 has a substantially rectangular shape and opens upward.

[0024] The cover 4 is a flat plate-shaped member having a substantially rectangular shape. The cover 4 is made of resin and contains a heat insulating material inside. The cover 4 opens and closes the first opening 23. The cover 4 is supported on the box 2 in a rotatable and detachable manner. The cover 4 can be opened to both sides relative to the box 2. The cover 4 can rotate relative to the box 2 around an axis parallel to the longitudinal direction.

[0025] When the first opening 23 is closed by the cover 4 , the upper surface of the cover 4 is coplanar with the pair of short walls 22 . When the first opening 23 is closed by the cover 4 , the side surfaces of the cover 4 extending in the longitudinal direction are coplanar with the pair of long walls 21 .

[0026] The cover body 4 has a pair of long sides 41, a pair of short sides (wide sides) 42, and a support portion 43. The pair of long sides 41 extend in the longitudinal direction of the box body 2. In the following description, one of the pair of long sides 41 is referred to as the first long side 41a, and the other of the pair of long sides 41 is referred to as the second long side 41b. The pair of short sides 42 extend in the width direction of the box body 2. The support portion 43 is arranged at both ends of the pair of long sides 41 in the longitudinal direction. The support portion 43 is a circular hole opened in the longitudinal direction.

[0027] The cover body 4 includes an outer cover 44 and an inner cover 45. The outer cover 44 is arranged on the upper part of the inner cover 45. The outer cover 44 is arranged so as to cover the upper part of the inner cover 45. The outer cover 44 includes a recessed portion 44a for arranging an operating body 62 described later. The inner cover 45 is fixed to the outer cover 44 below the outer cover 44. The inner cover 45 includes a support portion 43. In addition, a heat insulating material (not shown) is arranged between the outer cover 44 and the inner cover 45.

[0028] The pair of opening and closing mechanisms 6 opens and closes the cover body 4 relative to the box body 2. In the following description, one of the pair of opening and closing mechanisms 6 is referred to as a first opening and closing mechanism 6A, and the other of the pair of opening and closing mechanisms 6 is referred to as a second opening and closing mechanism 6B.

[0029] The first opening and closing mechanism 6A is arranged across the first long wall 21a of the housing 2 and the first long side 41a of the cover 4. The first opening and closing mechanism 6A includes a shaft portion 61, an operation body 62, and a groove portion 63.

[0030] The shaft 61 extends from both ends of the operating body 62 in the longitudinal direction. In the present embodiment, the shaft 61 is integral with the operating body 62. The shaft 61 is rotatably supported by the support 43. The shaft 61 and the operating body 62 are made of resin. The shaft 61 can rotate relative to the cover 4.

[0031] The shaft portion 61 includes a shaft body 61a and a locking portion 61b. The shaft body 61a is in a hollow cylindrical shape and is supported by the support portion 43. The locking portion 61b extends from the top end surface of the shaft body 61a in the length direction. The locking portion 61b is arranged in the groove portion 63. The locking portion 61b is integral with the shaft body 61a. The locking portion 61b is formed, for example, by making the top end of the shaft portion 61 a D-shaped cutting shape. The locking portion 61b has a semicircular arc surface 61c for engaging with the groove portion 63 and a D-shaped cross section 61d.

[0032] The operating body 62 is arranged in the recessed portion 44a of the outer cover 44. The operating body 62 is fixed to the shaft portion 61 and rotates integrally with the shaft portion 61 around the shaft portion 61. The operating body 62 is arranged on the upper surface of the cover 4. The operating body 62 is arranged at the center of the first long side 41a of the cover 4 in the longitudinal direction. The operating body 62 can rotate relative to the cover 4 around the shaft portion 61 as the rotation axis. The operating body 62 can rotate relative to the cover 4 in the longitudinal direction. Figure 4 The locked position shown and Figure 5 The operating body 62 is biased toward the locked position by a biasing member (not shown) such as a torsion spring. The biasing member is connected to the shaft 61, for example.

[0033] The groove portion 63 is fixed to the box body 2. The groove portion 63 is fixed to the inner surface of a pair of short walls 22 of the box body 2. The groove portion 63 is composed of a protrusion protruding in the length direction from a plate-shaped plate fixed to the box body 2. The inner peripheral surface 63a and the outer peripheral surface 63b of the groove portion 63 are formed in a substantially arc shape. The arc surface 61c of the locking portion 61b is engaged with the inner peripheral surface 63a of the groove portion 63.

[0034] The groove portion 63 has a second opening portion 63c that opens in a direction intersecting the shaft portion 61. The direction intersecting the shaft portion 61 is a direction intersecting the longitudinal direction. The second opening portion 63c opens in the same direction as the first opening portion 23 (here, upward).

[0035] The second opening and closing mechanism 6B is arranged across the second long wall 21b of the box body 2 and the second long side 41b of the cover body 4. The second opening and closing mechanism 6B has the same structure as the first opening and closing mechanism 6A. Therefore, the detailed description of the second opening and closing mechanism 6B is omitted. In addition, in the accompanying drawings, the same reference numerals as those of the first opening and closing mechanism 6A are marked in each structure of the second opening and closing mechanism 6B.

[0036] Reference Figures 4 to 6 The operation of the opening and closing mechanism 6 will be described below. The locking portion 61b can be operated according to the rotation of the operating body 62. Figure 4 The locking posture and Figure 5 The unlocking posture shown. When the operating body 62 is located at the locking position, the locking portion 61b can take the locking posture. When the operating body 62 is located at the unlocking position, the operating body 62 can take the unlocking position.

[0037] In the locked position, the movement of the locking portion 61b in the cross direction (here, upward) is restricted by the second opening portion 63c of the groove portion 63. In the locked position, the approximate center of the arc surface 61c of the locking portion 61b is located at the second opening portion 63c. In the locked position, the dimension of the locking portion 61b in the width direction is larger than the dimension of the second opening portion 63c. Therefore, in the locked position, the locking portion 61b cannot be pulled out from the second opening portion 63c. When the locking portion 61b is in the locked position, the first long wall 21a of the box body 2 is connected to the first long side 41a of the cover body 4.

[0038] In the unlocked position, the locking portion 61b can be disengaged from the groove portion 63 through the second opening 63c. Figure 5 As shown in FIG. 1 , in the unlocked position, the dimension of the lock portion 61 b ​​in the width direction is smaller than the dimension of the second opening 63 c. Therefore, in the unlocked position, the lock portion 61 b ​​can move upward through the second opening 63 c.

[0039] like Figure 6 As shown, when the locking portion 61b of the second opening and closing mechanism 6B is in the locked position, when the locking portion 61b of the first opening and closing mechanism 6A is in the unlocked position and the first long side 41a of the cover body 4 is lifted upward, the cover body 4 rotates around the shaft portion 61 of the second opening and closing mechanism 6B. At this time, the force of the force-applying member connected to the shaft portion 61 of the second opening and closing mechanism 6B acts on the shaft portion 61 of the second opening and closing mechanism 6B, and the shaft portion 61 of the second opening and closing mechanism 6B rotates integrally with the cover body 4. Therefore, the operating body 62 of the second opening and closing mechanism 6B rotates integrally with the shaft portion 61 of the second opening and closing mechanism 6B and the cover body 4 while being held in the locked position.

[0040] On the other hand, when the locking portion 61b of the first opening and closing mechanism 6A is in the locked position, when the locking portion 61b of the second opening and closing mechanism 6B is in the unlocked position and the second long side 41b of the cover body 4 is lifted upward, the cover body 4 rotates around the shaft portion 61 of the first opening and closing mechanism 6A. At this time, the force of the force-applying member connected to the shaft portion 61 of the first opening and closing mechanism 6A acts on the shaft portion 61 of the first opening and closing mechanism 6A, and the shaft portion 61 of the first opening and closing mechanism 6A rotates integrally with the cover body 4. Therefore, the operating body 62 of the first opening and closing mechanism 6A rotates integrally with the shaft portion 61 of the first opening and closing mechanism 6A and the cover body 4 while being held in the locked position. In addition, when the locking portion 61b of the first opening and closing mechanism 6A and the locking portion 61b of the second opening and closing mechanism 6B are in the unlocked position, the cover body 4 can be removed from the box body 2.

[0041] like Figure 4 and Figure 7As shown, the cover body 4 has a holding portion 46. The holding portion 46 is arranged on the lower surface of the cover body 4. The holding portion 46 is formed on the inner cover 45. The cross section of the holding portion 46 is substantially U-shaped. The holding portion 46 opens downward when the cover body 4 is closed. The holding portion 46 contacts the outer peripheral surface 63b of the groove portion 63 when the cover body 4 is closed.

[0042] The holding portion 46 has an arc surface 46a and a flat surface 46b. The arc surface 46a engages with the outer peripheral surface 63b of the groove portion 63. The flat surface 46b can engage with the flat surface 24a of the stopper portion 24 described later.

[0043] like Figure 7 As shown, when the cover body 4 is opened with the shaft portion 61 of the second opening and closing mechanism 6B as the center, the holding portion 46 is held by the outer peripheral surface 63b of the groove portion 63. When the cover body 4 rotates with the shaft portion 61 of the second opening and closing mechanism 6B as the center, the holding portion 46 engages with the outer peripheral surface 63b of the groove portion 63 of the second opening and closing mechanism 6B. Accordingly, when the cover body 4 rotates with the shaft portion 61 of the second opening and closing mechanism 6B as the center, the second long side 41b of the cover body 4 can be prevented from being separated from the second long wall 21b of the box body 2.

[0044] like Figure 7 As shown, the opening angle θ of the cover body 4 relative to the box body 2 is set to 110°, for example. Here, the box body 2 has a stopper 24. The stopper 24 limits the rotation of the cover body 4 when the cover body 4 is opened with the shaft 61 of the second opening and closing mechanism 6B as the center. The stopper 24 limits the opening angle of the cover body 4 from exceeding the set opening angle θ. The cover body 4 can be kept at the opening angle θ by the stopper 24.

[0045] The stopper 24 is formed on a part of the outer peripheral surface 63b of the groove 63. The cross section of the stopper 24 is substantially U-shaped. The stopper 24 extends from the outer peripheral surface 63b of the groove 63 in a direction away from the locking portion 61b.

[0046] The stopper 24 has a flat surface 24a and an angle portion 24b. The flat surface 24a can engage with the flat surface 46b of the retaining portion 46. The flat surface 24a extends in a direction intersecting the width direction when viewed from the length direction. When the cover body 4 is rotated to the opening angle θ, the stopper 24 engages with the flat surface 46b of the retaining portion 46. Accordingly, the rotation of the cover body 4 is restricted.

[0047] The corner portion 24b is located inside the flat surface 24a in the width direction. The corner portion 24b is located above the lower end of the flat surface 24a. When an excessive force is applied to the cover body 4 in the direction in which the cover body 4 is opened, the corner portion 24b interferes with the retaining portion 46. In addition, the interference amount between the corner portion 24b and the retaining portion 46 is set to an amount by which the retaining portion 46 can pass over the corner portion 24b.

[0048] like Figure 8 and Fig. 9 As shown, the restricting portion 8 restricts the locking portion 61 b ​​from being disengaged from the groove portion 63 when the cover body 4 rotates around the shaft portion 61 of the first opening and closing mechanism 6A.

[0049] The restricting portion 8 rotates integrally with the cover body 4. The restricting portion 8 is disposed on the outer peripheral side of the groove portion 63. The restricting portion 8 is a cylindrical protrusion, and protrudes from the cover body 4 in the longitudinal direction. The restricting portion 8 may also be formed integrally with the cover body 4.

[0050] The limiting part 8 can be adjusted according to the rotation of the cover body 4. Figure 8 The non-engaged position shown and Fig. 9 In the non-engaging position, the restricting portion 8 is not engaged with the outer peripheral surface 63b of the groove portion 63.

[0051] In the engaged position, the limiting portion 8 can engage with the outer peripheral surface 63b of the groove portion 63, thereby limiting the locking portion 61b from moving in the opening direction (here, upward) of the second opening portion 63c. In the present embodiment, in the engaged position, the limiting portion 8 can engage with the flat surface 24a of the stopper portion 24. When the cover body 4 rotates around the shaft portion 61 of the first opening and closing mechanism 6A, the limiting portion 8 prevents the locking portion 61b from disengaging from the groove portion 63 through the second opening portion 63c. Accordingly, when the cover body 4 rotates around the shaft portion 61 of the second opening and closing mechanism 6B, the second long side 41b of the cover body 4 can be prevented from disengaging from the second long wall 21b of the box body 2. In addition, in Figures 4 to 7 In the figure, the restricting portion 8 is omitted.

[0052] like Figure 8 As shown, the groove portion 63 has a recessed portion 63d. The recessed portion 63d opens in a direction intersecting the shaft portion 61. The recessed portion 63d opens in the same direction as the second opening portion 63c. The recessed portion 63d is an opening that allows the restriction portion 8 to move in the up and down directions when the cover body 4 is opened and closed. The recessed portion 63d is located above the restriction portion 8 when the first opening portion 23 is closed by the cover body 4. The dimension of the recessed portion 63d in the width direction is larger than the outer diameter of the restriction portion 8. For example, when the locking portion 61b of the first opening and closing mechanism 6A is disengaged from the groove portion 63 and the shaft portion 61 is moved upward, the restriction portion 8 does not interfere with the groove portion 63. That is, when the locking portion 61b moves in the opening and closing direction of the cover body 4, the restriction portion 8 can pass through the recessed portion 63d and the second opening portion 63c. Therefore, the restriction portion 8 does not hinder the opening and closing of the cover body 4.

[0053] In the refrigerator 1 of the above structure, the operating body 62 is fixed to the shaft 61 and rotates integrally with the shaft 61 with the shaft 61 as the center. In addition, the locking portion 61b of the shaft 61 can take a locking posture and an unlocking posture according to the rotation of the operating body 62. Therefore, for example, the operating body 62, the shaft 61 and the locking portion 61b can be configured as a single component to open and close the cover 4. In addition, since the movement of the locking portion 61b is limited by the second opening portion 63c, the state of locking the cover 4 can be achieved with a simple structure. As a result, the cover 4 can be opened and closed relative to the box 2 with a simple structure.

[0054] <Other Implementation Methods> An embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the invention.

[0055] In the above embodiment, both of the pair of long sides 41 of the cover 4 can be separated from the box 2, but one of the pair of long sides 41 of the cover 4 can be configured to be unable to be separated from the box 2. One of the first opening and closing mechanism 6A and the second opening and closing mechanism 6B can be configured by a hinge, for example.

[0056] The pair of opening and closing mechanisms 6 may be arranged across the pair of short walls 22 of the box body 2 and the pair of short sides 42 of the cover body 4 .

[0057] The shape of the lock portion 61b and the shape of the groove portion 63 may be changed. The shape of the lock portion 61b may be any shape as long as it can take a locked position and an unlocked position according to the rotation operation of the operation body 62. The groove portion 63 may be formed integrally with the housing 2.

[0058] The operating body 62 and the shaft portion 61 may be provided separately. The shaft portion 61 may be made of metal. The locking portion 61 b ​​may be provided separately from the shaft portion 61 .

[0059] The support portion 43 of the cover body 4 may be formed across the outer cover 44 and the inner cover 45. The shaft portion 61 may be rotatably supported by the cover body 4 by being sandwiched between the outer cover 44 and the inner cover 45.

[0060] like Fig.10 and Fig.11 As shown, the refrigerator 1 may include a holding mechanism 70. The holding mechanism 70 is disposed at both ends of the shaft body 61a of the shaft portion 61 (see Figure 3 The holding mechanism 70 includes a receiving portion 71, a first engaging portion 72, a second engaging portion 73, a pressing member 74, and a biasing member 75. Figure 3 In the figure, the pressing member 74 and the urging member 75 are omitted.

[0061] The receiving portion 71 is disposed on one of the cover body 4 and the shaft portion 61, and is open toward the other of the cover body 4 and the shaft portion 61. Fig.10 and Fig.11 In the example shown, the housing portion 71 is disposed on the cover 4 and is open toward the shaft body 61 a of the shaft portion 61 . The housing portion 71 is formed in a bottomed cylindrical shape and extends in the radial direction of the shaft portion 61 .

[0062] The first engaging portion 72 and the second engaging portion 73 are arranged on the outer peripheral surface of the other of the cover body 4 and the shaft portion 61. Fig.10 and Fig.11 In the example shown, the first engaging portion 72 and the second engaging portion 73 are arranged on the outer peripheral surface of the shaft body 61a of the shaft portion 61. The first engaging portion 72 and the second engaging portion 73 have a shape that is recessed toward the radial inner side of the shaft portion 61 on the outer peripheral surface of the shaft body 61a. The second engaging portion 73 is separated from the first engaging portion 72 in the circumferential direction of the shaft portion 61. Accordingly, a convex portion 76 is formed between the first engaging portion 72 and the second engaging portion 73.

[0063] The pressing member 74 is disposed in the housing portion 71 so as to be able to move forward and backward toward the other of the cover body 4 and the shaft portion 61. Fig.10 and Fig.11 In the example shown, the pressing member 74 is accommodated in the accommodating portion 71 so as to be able to move forward and backward toward the shaft body 61a of the shaft portion 61. The pressing member 74 is, for example, a spherical member. Fig.10 As shown, the pressing member 74 is in the locking position (see Figure 4 ) is engaged with the first engaging portion 72. Fig.11 As shown, the pressing member 74 engages with the second engaging portion 73 when the operation body 62 is located at the unlock position.

[0064] The urging member 75 is disposed in the housing portion 71 and urges the pressing member 74 toward the shaft body 61a of the shaft portion 61. The urging member 75 is, for example, a coil spring. For example, when the operating body 62 is moved from the locked position to the unlocked position, the pressing member 74 is pressed by the convex portion 76 and moves back radially outward. Then, the pressing member 74 passes over the convex portion 76 and engages with the second engaging portion 73.

[0065] In addition, the receiving portion 71 may be arranged on the shaft portion 61, and the first engaging portion 72 and the second engaging portion 73 may be arranged on the cover body 4. In this case, the force applying member 75 applies force to the pressing member 74 toward the cover body 4. In addition, one of the first engaging portion 72 and the second engaging portion 73 may be omitted. The pressing member 74 and the force applying member 75 may be changed in shape and integrally formed of a synthetic resin or the like. In addition, they may be integrally formed with the inner cover 45 and the shaft body 61a.

Claims

1. A refrigerator, characterized in that: It has a box body, a cover body, a shaft part, an operating body and a groove part, wherein: The box body has a first opening; The cover is used to open and close the first opening; The shaft portion has a locking portion and is rotatably supported on the cover body; The operating body is fixed to the shaft portion and rotates integrally with the shaft portion around the shaft portion; The groove portion is fixed to the box body and has a second opening portion, the second opening portion opening in a direction intersecting with the shaft portion, The locking portion is arranged in the groove portion and can take a locking posture and an unlocking posture according to the operation of the operating body, wherein the locking posture refers to a posture in which the movement of the locking portion in the cross direction is restricted by the second opening portion, and the unlocking posture refers to a posture in which the locking portion can be detached from the groove portion through the second opening portion.

2. The refrigerator according to claim 1, characterized in that: The locking portion has a semicircular arc surface that engages with the groove portion.

3. The refrigerator according to claim 2, characterized in that: The locking portion also has a D-shaped cross-section.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: The operating body is arranged on the upper surface of the cover body.

5. The refrigerator according to any one of claims 1 to 3, characterized in that: The second opening opens in the same direction as the first opening.

6. The refrigerator according to any one of claims 1 to 3, characterized in that: The device also includes an opening and closing mechanism, which allows the cover to rotate around the shaft. The cover body has a holding portion, and the holding portion is held on an outer peripheral surface of the groove portion when the cover body is opened around the shaft portion by the opening and closing mechanism.

7. The refrigerator according to claim 6, characterized in that: One of the box body and the cover body has a stopper portion, and the stopper portion restricts the rotation of the cover body when the cover body is opened about the shaft portion by the opening and closing mechanism.

8. The refrigerator according to claim 7, characterized in that: The stopper portion is disposed on an outer peripheral surface of the groove portion and extends in a direction away from the locking portion.

9. The refrigerator according to any one of claims 1 to 3, characterized in that: It also has an opening and closing mechanism and a limiting part, wherein The opening and closing mechanism is used to make the cover body rotate around the shaft portion; When the cover body is rotated around the shaft portion by the opening and closing mechanism, the restricting portion restricts the locking portion from being disengaged from the groove portion. The limiting portion can move between an engaged position and a non-engaged position according to the rotation of the cover body, wherein the engaged position refers to a position where the limiting portion can engage with the outer peripheral surface of the groove portion, and the non-engaged position refers to a position where the limiting portion does not engage with the outer peripheral surface of the groove portion.

10. The refrigerator according to any one of claims 1 to 3, characterized in that: It also has a holding mechanism, which can hold the operating body, The holding mechanism comprises a receiving portion, a first engaging portion, a pressing member and a biasing member, wherein: The receiving portion is arranged on one of the cover body and the shaft portion, and is opened toward the other of the cover body and the shaft portion; The first engaging portion is arranged on the outer peripheral surface of the other of the cover body and the shaft portion; The pressing member is arranged on the receiving portion in a manner that it can move forward and backward toward the other of the cover body and the shaft portion, and is engaged with the first engaging portion when the operating body is located at any one of a locking position corresponding to the locking posture or an unlocking position corresponding to the unlocking posture; The urging member is disposed in the housing portion, and is used to urge the pressing member toward the shaft portion.

11. The refrigerator according to claim 10, characterized in that: The holding mechanism further includes a second engaging portion, which is located at a position separated from the first engaging portion in the circumferential direction of the shaft portion and is arranged on the outer peripheral surface of the other of the cover body and the shaft portion. The pressing member engages with the first engaging portion when the operating body is located at the locking position, and engages with the second engaging portion when the operating body is located at the unlocking position.

12. The refrigerator according to claim 10, characterized in that: The housing portion is provided on the cover body, and the first engaging portion is provided on the shaft portion.

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