Closure

Abstract

To provide a closure with high durability.SOLUTION: A closure comprises: a first housing; a second housing with a shaft extending in a first direction and provided rotatably with respect to the first housing around the shaft; and an elastic member provided between the first housing and the second housing. The shaft can be shifted to a first position which can transfer to a state where a fitting state between the first housing and the second housing is held and a state where the fitting state is cancelled, and a second position in which the second housing becomes rotatable with respect to the first housing. The first housing and the second housing respectively have a contact part contacting mutually in a state where the shaft is in the first position. The first housing has a guide part movably guiding the shaft to the first position and the second position along a second direction vertical to the first direction, and the shaft, the guide part, and the elastic member are provided in an upper part of the closure.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to closures. [Background technology]

[0002] Patent Document 1 discloses a closure having a main wall and a side wall. A thin hinge is provided between the main wall and the side wall to connect the main wall and the side wall so that the main wall and the side wall can be opened and closed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-148462 Summary of the Invention [Problem to be solved by the invention]

[0004] When the main wall and the side wall are connected to each other by a thin hinge, the thin hinge is subjected to load not only when the side wall is closed during use, but also when the side wall is opened and closed. If the thin hinge continues to be subjected to both loads during use and loads during opening and closing, it is prone to breakage.

[0005] The present disclosure aims to provide a highly durable closure. [Means for solving the problem]

[0006] The closure of the present disclosure includes a first housing, a second housing having an axis extending in a first direction and rotatable about the axis relative to the first housing, and an elastic member provided between the first housing and the second housing. The axis is movable between a first position that can transition between a state in which the first housing and the second housing are mated and a state in which the mated state is released, and a second position in which the second housing is rotatable relative to the first housing. The first housing and the second housing each have abutting portions that abut against each other when the axis is in the first position. The first housing has a guide portion that guides the axis between the first position and the second position along a second direction perpendicular to the first direction. The axis, the guide portion, and the elastic member are provided on an upper portion of the closure. [Effects of the Invention]

[0007] In accordance with the present disclosure, a highly durable closure is provided. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a top perspective view of the closure. [Figure 2] FIG. 2 is a bottom perspective view of the closure. [Figure 3] FIG. 3 is a top perspective view of the closure when the second housing of the closure is rotated. [Figure 4] FIG. 4 is a front view of the closure when the second housing is rotated. [Figure 5] FIG. 5 is a partial enlarged perspective view of the closure when the axis of the second housing is in the first position. [Figure 6] FIG. 6 is a partial enlarged perspective view of the closure when the stem is in a second position. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 8 is a perspective view of the latch of the second housing. [Figure 9] FIG. 9 is a bottom perspective view of the fastener of the closure. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Description of one embodiment of the present disclosure) First, embodiments of the present disclosure will be listed and described. (1) A closure according to one aspect of the present disclosure includes a first housing, a second housing having an axis extending in a first direction and rotatable about the axis relative to the first housing, and an elastic member provided between the first housing and the second housing. The axis is movable between a first position that can transition between a state in which the first housing and the second housing are mated and a state in which the mated state is released, and a second position in which the second housing is rotatable relative to the first housing. The first housing and the second housing each have abutting portions that abut against each other when the axis is in the first position. The first housing has a guide portion that guides the axis to move between the first position and the second position along a second direction perpendicular to the first direction. The axis, the guide portion, and the elastic member are provided on an upper portion of the closure.

[0010] The closure of the present disclosure includes a shaft that can move between a first position, which can transition between a state in which the mated state is maintained (hereinafter also referred to as a locked state) and a state in which the retention of the mated state is released (hereinafter also referred to as an unlocked state), and a second position, which allows the second housing to rotate relative to the first housing. Therefore, when the shaft is in the second position, the load during opening and closing is mainly applied to the shaft, while when the shaft is in the first position, the load during the locked state is mainly applied to the abutment portion rather than the shaft. In this way, the part that receives the load during opening and closing is different from the part that receives the load during use (locked state), thereby increasing the durability of the closure.

[0011] According to the present disclosure, an elastic member is provided between the first housing and the second housing and on the top of the closure, thereby improving the waterproofness of the closure.

[0012] (2) In (1) above, at least one of the first housing and the second housing may have a convex portion that presses the elastic member in a direction along the second direction when the axis is in the first position.

[0013] According to the present disclosure, when the shaft is in the first position, the elastic member is pressed in the second direction by the convex portion, thereby improving the waterproofness of the closure.

[0014] (3) In the above (1) or (2), at least one fastener may be provided on the upper portion of the closure to secure the first housing and the second housing to each other.

[0015] According to the present disclosure, a fastener that secures the first housing and the second housing to each other is provided on the upper portion of the closure, so that the mated state, or in other words, the locked state, of the first housing and the second housing can be continuously maintained.

[0016] (4) In (3) above, the device may further include at least one rib formed on the first housing and the second housing, the rib being located near the fastener, and the outer shape of the rib may be larger than the outer shape of the fastener in a projection onto a plane perpendicular to the first direction.

[0017] According to the present disclosure, ribs are formed on the first and second housings and are provided near the fastener, and the outer shape of the ribs is larger than the outer shape of the fastener. Even if an external cable is routed near the fastener, the external cable can be prevented from abutting on the fastener. Therefore, the fastener is less likely to break and has increased durability.

[0018] (Details of one embodiment of the present disclosure) A specific example of a closure 1 according to one embodiment of the present disclosure will be described with reference to the drawings. In this embodiment, the terms "upward," "downward," "leftward," "rightward," "forward," and "rearward" refer to relative directions set for the closure 1 illustrated in FIG. 1 for the sake of convenience. The present disclosure is not limited to these examples, but is defined by the claims, and all modifications within the meaning and scope equivalent to the claims are intended to be included.

[0019] First, the configuration of a closure 1 according to an embodiment of the present disclosure will be described with reference to Figures 1 to 9. The closure 1 is, for example, an aerial closure. An optical fiber cable and a storage tray for storing the optical fiber cable can be stored inside the closure 1. After the optical fiber cable connection work and the like are completed, the closure 1 is suspended from a suspension wire (support wire) by a suspension hook or the like. Note that the optical fiber cable and the suspension hook stored inside the closure 1 are not shown in the figures.

[0020] FIG. 1 is a top perspective view of the closure 1. FIG. 2 is a bottom perspective view of the closure 1. As illustrated in FIGS. 1 and 2, the closure 1 has a generally rectangular parallelepiped shape. In this embodiment, the direction parallel to the longest side of the rectangular parallelepiped shape is defined as the longitudinal direction D1. The longitudinal direction D1 of the closure 1 is the leftward or rightward direction of the closure 1 and is an example of a first direction.

[0021] The closure 1 includes a first housing 10, a second housing 20, an elastic member 30 (FIGS. 3 and 4), and a plurality of fasteners 40. The first housing 10 and the second housing 20 are each formed of, for example, a synthetic resin. The second housing 20 is a separate member from the first housing 10. The first housing 10 and the second housing 20 each have a shape obtained by dividing the rectangular parallelepiped closure 1 into roughly two halves along the longitudinal direction D1.

[0022] The first housing 10 and the second housing 20 are configured to fit together. Figures 1 and 2 are perspective views of the first housing 10 and the second housing 20 in a fitted state. When the first housing 10 and the second housing 20 are fitted together in a fitted state, an optical fiber cable can be housed in the internal space of the closure 1 surrounded by the first housing 10 and the second housing 20.

[0023] The second housing 20 is further provided rotatable relative to the first housing 10 around an axis 22, which will be described later. Fig. 3 is a top perspective view of the closure 1 when the second housing 20 has rotated. Fig. 4 is a front view of the closure 1 when the second housing 20 has rotated. As illustrated in Figs. 3 and 4, when the second housing 20 has rotated relative to the first housing 10, a user can access the inside of the closure 1 and perform work such as connecting an optical fiber cable.

[0024] First, the configuration of the second housing 20 will be described with reference to Figures 1 to 8. The second housing 20 has a second main body portion 21, a shaft 22, a second contact surface 23 (see Figure 7), a protrusion 24 (see Figure 7), and a latch 25. The shaft 22, the second contact surface 23, the protrusion 24, and the latch 25 may be molded integrally with the second main body portion 21.

[0025] The second main body portion 21 is a portion that forms the outer shape of the second housing 20, and has a shape in which the rectangular parallelepiped closure 1 is roughly divided into two along the longitudinal direction D1. A second rail portion 211 that extends in the longitudinal direction D1 and guides a fastener main body portion 41 of a fastener 40 (described later) along the longitudinal direction D1 is provided on an upper portion 21U of the second main body portion 21 (FIGS. 5 and 6). The second rail portion 211 has a protrusion 212 that engages with a recess 112 of a first rail portion 111 of the first housing 10 (described later). The engagement of the protrusion 212 of the second rail portion 211 with the recess 112 of the first rail portion 111 forms a single rail extending in the longitudinal direction D1.

[0026] The shafts 22 are provided in the upper portion 21U of the second main body portion 21, that is, in the upper portion 1U of the closure 1, and extend in the longitudinal direction D1. In this embodiment, the second housing 20 has two shafts 22 spaced apart from each other and integrally formed with the second main body portion 21. The number of shafts 22 is not limited to two. Each shaft 22 may be a separate member from the second main body portion 21. The shafts may also be made of a material other than synthetic resin, and may be made of a metal material such as SUS.

[0027] Each shaft 22 is movable between a first position P1 and a second position P2. Fig. 5 is a partially enlarged perspective view of the closure 1 when the shaft 22 is in the first position P1. Fig. 6 is a partially enlarged perspective view of the closure 1 when the shaft 22 is in the second position P2. The first position P1 is a position where the closure 1 can transition between a state in which the mated state between the first housing 10 and the second housing 20 is maintained and a state in which the mated state is released. The second position P2 is a position where the second housing 20 can rotate relative to the first housing 10.

[0028] The first position P1 and the second position P2 are located in a short-side direction D2 perpendicular to the longitudinal direction D1. In other words, the shaft 22 can move along the short-side direction D2. When the shaft 22 is at the first position P1, the first housing 10 and the second housing 20 can be in a state where they remain engaged with each other, i.e., a state where the engaged state is maintained (locked state), or a state where the engagement state is released, i.e., a state where the engaged state can be easily released (unlocked state). On the other hand, when the shaft 22 is at the second position P2, the second housing 20 can be easily rotated around the shaft 22 relative to the first housing 10. The short-side direction D2 is the front or rear direction of the closure 1 and is an example of the second direction.

[0029] Fig. 7 is a cross section taken along line VII-VII in Fig. 1. As illustrated in Fig. 7, the second abutment surface 23 is a flat portion provided on the upper portion 21U of the second main body portion 21, that is, the upper portion 1U of the closure 1, and extending in a plane perpendicular to the short-side direction D2. The second abutment surface 23 is configured to abut against the first abutment surface 13 of the first housing 10, which will be described later, when the shaft 22 is at the first position P1. The second abutment surface 23 is an example of an abutment portion.

[0030] The protrusion 24 is formed on the second contact surface 23, and has a protruding shape extending rearward from the second contact surface 23 toward the first housing 10 in the fitted state. The protrusion 24 is configured to press the elastic member 30 housed in the housing portion 14 of the first housing 10, which will be described later, in the rearward direction, which is a direction along the second direction, when the shaft 22 is at the first position P1.

[0031] The latches 25 are provided in the lower portion 21D of the second body portion 21, which is the lower portion 1D of the closure 1, and are configured to secure the first housing 10 and the second housing 20 to each other (FIG. 2). In this embodiment, the second housing 20 has four latches 25 spaced apart from each other, but the number of latches 25 is not limited to four. FIG. 8 is a perspective view of the latches 25. As illustrated in FIG. 8, each latch 25 has a latch main portion 251 and a latch opening 252. The latch main portion 251 has a flat plate shape extending from the second housing 20 toward the first housing 10 in the mated state. The latch opening 252 is an opening that penetrates the flat plate-shaped latch main portion 251. The latch opening 252 is configured to engage with a claw portion 151 of a latch engagement portion 15 of the first housing 10, which will be described later, when the shaft 22 is in the first position P1.

[0032] Next, the configuration of the first housing 10 will be described with reference to Figures 1 to 8. The first housing 10 has a first main body portion 11, a guide portion 12, a first contact surface 13 (see Figure 7), a storage portion 14 (see Figure 7), and a latch engagement portion 15. The guide portion 12, the first contact surface 13, the storage portion 14, and the latch engagement portion 15 may be molded integrally with the first main body portion 11.

[0033] The first main body portion 11 is a portion that forms the outer shape of the first housing 10, and has a shape in which the rectangular parallelepiped closure 1 is roughly divided into two along the longitudinal direction D1. A first rail portion 111 is provided on an upper portion 11U of the first main body portion 11, extending in the longitudinal direction D1 and guiding a fastener main body portion 41 of a fastener 40 (described later) along the longitudinal direction D1 (FIGS. 5 and 6). The first rail portion 111 has a recessed portion 112 that engages with a protruding portion 212 of the second main body portion 21 of the second housing 20. The recessed portion 112 of the first rail portion 111 engages with the protruding portion 212 of the second rail portion 211, thereby forming a single rail extending in the longitudinal direction D1.

[0034] The guide portion 12 is provided in the upper portion 11U of the first main body portion 11, which is also the upper portion 1U of the closure 1, and is configured to guide the shaft 22 of the second housing 20. The guide portion 12 extends along the short-side direction D2, and the shaft 22 can move inside the guide portion 12. The guide portion 12 has a first end portion 121 and a second end portion 122 in the short-side direction D2. The first end portion 121 is an end portion that abuts the shaft 22 when the shaft 22 is in the first position P1. The second end portion 122 is an end portion that abuts the shaft 22 when the shaft 22 is in the second position P2.

[0035] The first abutment surface 13 is a flat surface provided on the upper portion 11U of the first main body portion 11, that is, the upper portion 1U of the closure 1, and extends in a plane perpendicular to the short-side direction D2 (FIG. 7). The first abutment surface 13 is configured to abut against the second abutment surface 23 of the second housing 20 when the shaft 22 is at the first position P1. The first abutment surface 13 is an example of an abutment portion.

[0036] The accommodation portion 14 is provided in the upper portion 11U of the first main body portion 11, that is, the upper portion 1U of the closure 1, and is configured to accommodate the elastic member 30 (FIG. 7). The accommodation portion 14 extends in the longitudinal direction D1 and has a recessed space recessed from the first abutment surface 13 in a rearward direction away from the second housing 20 in a fitted state, and the elastic member 30 can be accommodated in the recessed space. The elastic member 30 accommodated in the accommodation portion 14 is pressed rearward by the protrusion 24 when the shaft 22 is in the first position P1.

[0037] The latch engagement portions 15 are provided on the lower part of the first main body portion 11, on the lower part 1D of the closure 1, and are configured to secure the first housing 10 and the second housing 20 to each other (FIGS. 2 and 8). The positions of the latch engagement portions 15 correspond to the positions at which the latches 25 of the second housing 20 are provided. The number of latch engagement portions 15 matches the number of the latches 25 of the second housing 20, and in this embodiment, the first housing 10 has four latch engagement portions 15 that are spaced apart from each other. Each latch engagement portion 15 has a claw portion 151 that is convex downward from the first main body portion 11.

[0038] The elastic member 30 is provided in the upper portion 1U of the closure 1, between the first housing 10 and the second housing 20 (FIGS. 4 and 7). The elastic member 30 is housed in the housing portion 14 of the first housing 10, and extends in the longitudinal direction D1.

[0039] A plurality of fasteners 40 are provided on the upper portion 1U of the closure 1 to secure the first housing 10 and the second housing 20 to each other (FIG. 1). In this embodiment, the closure 1 has four fasteners 40 spaced apart from each other, but the number of fasteners 40 is not limited to four. The fasteners 40 may be provided near each of the two ends of the closure 1 in the longitudinal direction D1.

[0040] Fig. 9 is a bottom perspective view of one fastener 40. Fig. 9 is an enlarged projection view seen from bottom to top, showing the configuration of fastener 40. As illustrated in Fig. 9, each fastener 40 has a fastener main body 41 and a positioning portion 42. The fastener main body 41 is provided so as to be movable in the longitudinal direction D1 along the first rail portion 111 of the first housing 10 and the second rail portion 211 of the second housing 20.

[0041] The positioning portion 42 is provided inside the fastener main body 41 and extends along the short-side direction D2. The positioning portion 42, together with the fastener main body 41, is provided on the first rail portion 111 so as to be movable between a locked position P3 and an unlocked position P4. A locking recess 113 is formed in the first rail portion 111 at the locked position P3. An unlocking recess 114 is formed in the first rail portion 111 at the unlocked position P4. The locking recess 113 and the unlocking recess 114 have the same shape. The positioning portion 42 has a positioning protrusion 421 at one end in the short-side direction D2 that engages with the shape of each recess. When the positioning protrusion 421 engages with the lock recess 113 at the lock position P3, the positioning portion 42 is disposed in the short-side direction D2 across both the recess 112 of the first rail portion 111 and the protrusion 212 of the second rail portion 211, and the fitted state of the first housing 10 and the second housing 20 is maintained (FIGS. 7 and 9). On the other hand, when the positioning protrusion 421 engages with the unlock recess 114 at the unlock position P4, the positioning portion 42 is separated from the recess 112 and the protrusion 212 and disposed in the short-side direction D2 across only the first rail portion 111, and the fitted state of the first housing 10 and the second housing 20 is released (FIGS. 5 and 6).

[0042] The positioning portion 42 further has an operating portion 422 at an end in the short-side direction D2 opposite the end at which the positioning protrusion 421 is located. When the user presses the operating portion 422 rearward, the positioning portion 42 elastically deforms and the positioning protrusion 421 is displaced rearward, thereby releasing the engagement with the lock recess 113 or the unlock recess 114. In other words, with the operating portion 422 pressed rearward, the fastener 40 can be moved along the longitudinal direction D1.

[0043] Next, we will explain how to open and close the closure 1. The method for opening a closed closure 1 and the method for closing an open closure 1 are the same except that the order of the steps explained below is reversed, and therefore, here we will explain how to open a closed closure 1.

[0044] First, as an initial state, a description will be given of a state in which the first housing 10 and the second housing 20 are fitted together and the fitted state is maintained. The state in which the fitted state is maintained is a state in which the first housing 10 and the second housing 20 are fixed to each other by the multiple fasteners 40, the latch 25, and the latch engagement portion 15 (FIGS. 1, 2, 7, and 9). In the following description, the state in which the first housing 10 and the second housing 20 are fitted together and the fitted state is maintained is referred to as a locked state. When the first housing 10 and the second housing 20 are in the locked state, the shaft 22 is in the first position P1, the positioning portions 42 of the multiple fasteners 40 are in the locked position P3, and the latch opening 252 of the latch 25 is engaged with the claw portion 151 of the latch engagement portion 15.

[0045] First, the user disengages the latch 25 from the latch opening 252 of the latch 25 at the lower portion 1D of the closure 1 by disengaging the tab 151 of the latch engagement portion 15 (FIG. 8). Next, the user moves the positioning portion 42 of each of the fasteners 40 from the locked position P3 to the unlocked position P4. When the positioning protrusion 421 moves to the unlocked position P4, the positioning portion 42 moves away from the recess 112 of the first rail portion 111 and the protrusion 212 of the second rail portion 211 and is positioned only on the first rail portion 111. This releases the engagement between the first housing 10 and the second housing 20, i.e., allows the engagement to be easily released. In this manner, the locked state between the first housing 10 and the second housing 20 is released. In the following description, the state in which the engagement between the first housing 10 and the second housing 20 is released is referred to as the unlocked state.

[0046] Next, the user moves the shaft 22 of the second housing 20, which is in the unlocked state, from the first position P1 to the second position P2 along the guide portion 12 extending in the short-side direction D2 ( FIG. 6 ). As the shaft 22 moves, the first abutment surface 13 of the first housing 10 and the second abutment surface 23 of the second housing 20 move away from each other, and the second housing 20 becomes rotatable about the shaft 22 relative to the first housing 10. The user rotates the second housing 20 relative to the first housing 10 to access the inside of the closure 1 and perform the work of connecting the optical fiber cable. When the second housing 20 rotates relative to the first housing 10, the load during opening and closing may be applied mainly to the shaft 22 of the second housing 20.

[0047] As described above, the closure 1 of this embodiment includes the shaft 22 that can move between a first position P1, which can transition between a locked state and an unlocked state, and a second position P2, which allows the second housing 20 to rotate relative to the first housing 10. Therefore, when the shaft 22 is in the second position P2, the load during opening and closing is mainly applied to the shaft 22, whereas when the shaft 22 is in the first position, the load during the locked state is not applied to the shaft 22 but is mainly applied to the first abutment surface 13 and the second abutment surface 23. In this way, the parts to which the load during opening and closing is applied are different from the parts to which the load is applied during use (locked state), thereby improving the durability of the closure 1.

[0048] Additionally, in this embodiment, an elastic member 30 is provided between the first housing 10 and the second housing 20 and on the upper portion 1U of the closure 1. The second housing 20 has a protrusion 24 that presses the elastic member 30 in the direction along the short side direction D2 when the axis 22 is at the first position P1, further improving the waterproofness of the closure 1.

[0049] A plurality of fasteners 40 are provided on the upper portion 1U of the closure 1 to secure the first housing 10 and the second housing 20 to each other. This allows the first housing 10 and the second housing 20 to be continuously kept locked together.

[0050] In the above-described embodiment, the first housing 10 has a guide portion 12 and the second housing 20 has an axis 22, but the first housing 10 may have an axis extending in the longitudinal direction D1 and the second housing 20 may have a guide portion that guides the axis in the lateral direction D2.

[0051] In the above-described embodiment, the first housing 10 has the accommodation portion 14 that accommodates the elastic member 30, and the second housing 20 has the protrusion 24 that presses the elastic member 30, but the accommodation portion 14 and the protrusion 24 are not limited to this arrangement. The second housing 20 may have the accommodation portion 14, and the first housing 10 may have the protrusion 24 that presses the elastic member 30 accommodated in the accommodation portion.

[0052] The closure 1 in the above-described embodiment may further include ribs 50. In this embodiment, the closure 1 includes five ribs 50 spaced apart from one another, but the number of ribs 50 is not limited to five. The ribs 50 may be provided near each of the two ends of the closure 1 in the longitudinal direction D1.

[0053] Each rib 50 has a first rib 51 and a second rib 52. The first rib 51 is provided in the upper part 11U of the first housing 10, in the upper part 1U of the closure 1, near the fastener 40. The second rib 52 is provided in the upper part 21U of the second housing 20, in the upper part 1U of the closure 1, near the fastener 40.

[0054] The first rib 51 has a flat plate shape that convex upward from the upper portion 11U of the first housing 10. The second rib 52 has a flat plate shape that convex upward from the upper portion 21U of the second housing 20. When the shaft 22 is at the first position P1, the first rib 51 and the second rib 52 abut against each other to form a single outer shape on a plane perpendicular to the longitudinal direction D1. The outer shape of the rib 50 formed by the first rib 51 and the second rib 52 is, for example, a trapezoid with one pair of opposing sides parallel to the short direction D2.

[0055] In a projection onto a plane perpendicular to the longitudinal direction D1, the outer shape of the rib 50 is larger than the outer shape of the fastener 40. More specifically, the height H50 of the rib 50 extending upward from the upper portion 1U of the closure 1 is greater than the height H40 of the fastener 40 extending upward from the upper portion 1U of the closure 1 (FIGS. 5 and 7). The width W50 of the longest side of the rib 50 extending in the short direction D2 at the upper portion 1U of the closure 1 is greater than the width W40 of the fastener 40 extending in the short direction D2 at the upper portion 1U of the closure 1.

[0056] The closure 1 of this embodiment is an overhead closure, and an external cable may be wired near the closure 1. If the external cable were wired near the fastener 40, the external cable may come into contact with the fastener 40, which may damage the fastener 40. However, in this embodiment, the rib 50 is provided near the fastener 40, and the outer shape of the rib 50 is larger than the outer shape of the fastener 40. Therefore, even if the external cable is wired near the fastener 40, the external cable will come into contact with the rib 50 rather than the fastener 40, making the fastener 40 less likely to be damaged. [Explanation of symbols]

[0057] 1. Closures 1U top 1D bottom 10 First enclosure 11 First body part 11U upper part 11D Lower 111 First Rail Section 112 recess 113 Lock recess 114 Unlock recess 12 Information Department 121 First end 122 Second end 13 First contact surface 14 Storage section 15 Latch engagement part 151 Claw 20 Second enclosure 21 Second body part 21U top 21D lower part 211 Second rail section 212 Convex part 22 axes 23 Second contact surface 24 Convex part 25 Latch 251 Latch body 252 Latch opening 30 Elastic member 40 Fasteners 41 Fastener body 42 Positioning part 421 Positioning protrusion 422 Operation section 50 Ribs 51 First Rib 52 Second Rib D1 Longitudinal direction D2 Width direction P1 first position P2 2nd position P3 Lock position P4 Unlocked position W40, W50 width

Claims

1. A first housing; a second housing having an axis extending in a first direction and being rotatable relative to the first housing around the axis; a closure including an elastic member provided between the first housing and the second housing, the shaft is movable between a first position where the shaft can transition between a state where the fitted state between the first housing and the second housing is maintained and a state where the fitted state is released, and a second position where the second housing is rotatable relative to the first housing; the first housing and the second housing each have an abutment portion that abuts against each other when the shaft is at the first position; the first housing has a guide portion that guides the shaft to be movable between the first position and the second position along a second direction perpendicular to the first direction, The shaft, the guide portion, and the elastic member are provided on an upper portion of the closure.

2. 2. The closure of claim 1, wherein at least one of the first housing and the second housing has a convex portion that presses the elastic member in a direction along the second direction when the shaft is in the first position.

3. 3. The closure of claim 1, further comprising at least one fastener provided on the top portion of the closure for fastening the first housing and the second housing together.

4. further comprising at least one rib formed on the first housing and the second housing; The rib is provided near the fastener, The closure according to claim 3 , wherein the outer shape of the rib is larger than the outer shape of the fastener in a projection onto a plane perpendicular to the first direction.

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