Opening and closing structure

Abstract

To set the operational feel when opening and closing.SOLUTION: An opening / closing structure including an opening / closing door 2 that opens and closes an opening 1A of a main body 1, includes a flexible support portion 2A extending in a cantilevered manner on the opening / closing door 2, a support shaft 1B that rotatably supports the support portion 2A with respect to the main body 1, a convex portion 1C provided on the main body 1, and a recess 2C provided in the support portion 2A and fitted into the convex portion 1C, and the recess 2C includes a first recess 2Ca that fits into the convex portion 1C when moving in one of the opening and closing of the opening / closing door 2, and a second recess 2Cb that fits into the convex portion 1C when moving in the other of the opening and closing of the opening / closing door 2, and the first recess 2Ca and the second recess 2Cb have different fitting shapes with respect to the convex portion 1C.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an opening and closing structure. [Background technology]

[0002] For example, Patent Document 1 discloses a structure in which the front side of a connection terminal provided on the front surface of a main body case is covered with an openable lid. The openable lid has a lid body that covers the front side of the connection terminal, and a strip-shaped locking piece that is inserted into a locking hole in the main body case from one end of the lid body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-103594 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the cantilever-type opening / closing structure shown in Patent Document 1 has a support part that extends cantilevered from the opening / closing cover, and the opening / closing cover is rotated by supporting this support part at a fixed fulcrum. In such an opening / closing structure, it is desirable to provide an appropriate operating feel when the opening / closing cover is in the open state and when it is in the closed state.

[0005] An object of the present invention is to provide an opening / closing structure that allows the operational feel when opening and closing a cantilevered opening / closing cover to be set. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, one embodiment of the opening and closing structure of the present invention is an opening and closing structure including an opening and closing door that opens and closes an opening of a main body portion, and includes a flexible support portion that extends cantilevered from the opening and closing door, a support shaft that rotatably supports the support portion relative to the main body portion, a convex portion provided on the main body portion, and a concave portion that is provided on the support portion and fits into the convex portion, wherein the concave portion has a first concave portion that fits into the convex portion when the opening and closing door moves in one direction to open or close, and a second concave portion that fits into the convex portion when the opening and closing door moves in the other direction to open or close, and the first concave portion and the second concave portion have different fitting shapes with respect to the convex portion. [Effects of the Invention]

[0007] According to the present invention, the operational feel when opening and closing the door can be set. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing the closed state of the opening and closing structure of the embodiment. [Figure 2] FIG. 2 is a perspective view illustrating the open state of the opening and closing structure of the embodiment. [Figure 3] FIG. 3 is a perspective view showing a main body of the opening and closing structure of the embodiment. [Figure 4] FIG. 4 is a perspective view showing the opening and closing door of the opening and closing structure of the embodiment. [Figure 5] FIG. 5 is a cross-sectional development view showing the main part of the opening and closing structure of the embodiment. [Figure 6] FIG. 6 is a plan view showing a main part of another example of the opening and closing structure according to the embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing a main part of another example of the opening and closing structure according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, modes for carrying out the invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments. Furthermore, the components in the following embodiments include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the components disclosed in the following embodiments can be combined as appropriate.

[0010] 1 to 5 are applied to, for example, an electronic device 100 mounted inside a vehicle cabin. The electronic device 100 is, for example, an AV (Audio Visual) integrated car navigation device. In each figure, the X direction is the up-down direction, the Y direction is the left-right direction, and the Z direction is the front-rear direction.

[0011] The opening and closing structure of the embodiment includes a main body 1 and an opening and closing door 2, as shown in FIGS.

[0012] The main body 1 is disposed, for example, on an operation panel (not shown) of the electronic device 100, and has an opening 1A. A terminal connection portion 10 is disposed in the opening 1A. The terminal connection portion 10 is, for example, a USB (Universal Serial Bus) terminal connection portion. The opening 1A is formed in a rectangular shape extending in the vertical and horizontal directions to match the shape of the terminal connection portion 10. As shown in FIGS. 2 and 3 , the opening 1A is formed with a side inner wall 1Aa extending in the vertical direction and an upper inner wall 1Ab and a lower inner wall 1Ac extending in the horizontal direction so as to surround the terminal connection portion 10 therein.

[0013] The main body 1 has a support shaft 1B and a protrusion 1C inside the opening 1A. The support shaft 1B is provided on the upper inner wall 1Ab and the lower inner wall 1Ac and is formed in a cylindrical shape extending so as to face each other in the vertical direction. The protrusion 1C is provided on the upper inner wall 1Ab and the lower inner wall 1Ac and is formed to protrude so as to face each other in the vertical direction. The protrusion 1C is located on one side in the left-right direction of the support shaft 1B, and in this embodiment, is located on the side that moves from a closed state to an open state when the opening / closing door 2 is rotated around the support shaft 1B. The protrusion 1C protrudes from the base of a cylindrical shape and has a protruding end that narrows into a conical or hemispherical shape. Note that the protrusion 1C may be configured to be provided on either the upper inner wall 1Ab or the lower inner wall 1Ac.

[0014] The door 2 is formed in a rectangular plate shape extending in the vertical and horizontal directions so as to close the opening 1A. As shown in FIGS. 2 and 4 , the door 2 has a support portion 2A. The support portion 2A extends cantilevered from the upper and lower surfaces of the door 2 facing the opening 1A when the door 2 closes the opening 1A. The support portion 2A is provided in a plate shape along the upper inner wall 1Ab and the lower inner wall 1Ac, and is formed as a pair facing each other in the vertical direction. The support portion 2A is formed with a shaft hole 2B through which the support shaft 1B is inserted. Therefore, the door 2 is supported by the main body 1 so as to be rotatable about the support shaft 1B by inserting the support shaft 1B into the shaft hole 2B of the support portion 2A and assembling the door 2 to the main body 1. As a result, the door 2 can be moved between a closed state in which the door 2 closes the opening 1A of the main body 1 and covers the terminal connection portion 10, as shown in FIG. 1 , and an open state in which the door 2 opens the opening 1A of the main body 1 and exposes the terminal connection portion 10, as shown in FIG. 2 .

[0015] The opening / closing door 2 has recesses 2C formed in the support portion 2A. The recesses 2C are formed on the surface of the upper support portion 2A facing the upper inner wall 1Ab, and on the surface of the lower support portion 2A facing the lower inner wall 1Ac. The recesses 2C are formed symmetrically on the upper and lower support portions 2A and 2A, with the same plane coinciding in the vertical direction. FIG. 5 shows the recesses 2C in the upper support portion 2A. Note that the recesses 2C fit with the protrusions 1C. When the protrusions 1C are provided only on the upper inner wall 1Ab, the recesses 2C are formed only on the upper support portion 2A, and when the protrusions 1C are provided only on the lower inner wall 1Ac, the recesses 2C include a first recess 2Ca, a second recess 2Cb, and a third recess 2Cc.

[0016] 4, the first recess 2Ca is provided at a position where it fits into the protrusion 1C when the door 2 is rotated in one direction to open or close, in this embodiment, when the door 2 is moved to the closed state. The first recess 2Ca is formed in a cone-shaped or hemispherical depression so that the conical or hemispherical protruding end of the protrusion 1C fits into it.

[0017] 4, the second recess 2Cb is provided at a position where it fits into the protrusion 1C when the door 2 is rotated in the other direction for opening or closing, in this embodiment, when the door 2 is moved to the open state. The second recess 2Cb is formed in a cone-shaped or hemispherical depression so that the conical or hemispherical protruding end of the protrusion 1C fits into it.

[0018] The first recess 2Ca and the second recess 2Cb are arranged on a circular locus centered on the axial hole 2B. In this embodiment, the first recess 2Ca and the second recess 2Cb are arranged in a positional relationship of 90 degrees about the axial hole 2B in order to rotate the opening / closing door 2 by 90 degrees between the closed state and the open state. For example, when the opening / closing door 2 is rotated by 100 degrees between the closed state and the open state, the first recess 2Ca and the second recess 2Cb are arranged in a positional relationship of 100 degrees about the axial hole 2B.

[0019] 4 and 5, the first recess 2Ca and the second recess 2Cb are arranged such that, in the extension direction (front-rear direction (Z direction)) of the support part 2A extending in a cantilevered manner from the opening / closing door 2, the first recess 2Ca is arranged on the tip 2Ab side and the second recess 2Cb is arranged on the base end 2Aa side. The first recess 2Ca is arranged at a position distance L1 from the base end 2Aa of the support part 2A. The second recess 2Cb is arranged at a position distance L2 from the base end 2Aa of the support part 2A. Regarding the distances L1 and L2, the distance L1 of the first recess 2Ca is longer than the distance L2 of the second recess 2Cb.

[0020] 5, the first recess 2Ca has a bottom at a depth T1 from the plate surface of the support portion 2A. The second recess 2Cb has a bottom at a depth T2 from the plate surface of the support portion 2A. The depths T1 and T2 are such that the depth T1 of the first recess 2Ca is shallower than the depth T2 of the second recess 2Cb. These depths T1 and T2 are set so that when the protrusion 1C is fitted into the recesses 2Ca and 2Cb, the cantilevered support portion 2A bends in the vertical direction, which is the axial direction of the support shaft 1B. The bending of the support portion 2A allows the opening and closing door 2 to be positioned tightly relative to the main body 1 in both the closed and open states.

[0021] Furthermore, in the opening / closing door 2, the first recess 2Ca at a distance L1 far from the base end 2Aa of the support portion 2A is formed at a shallow depth T1, so that in the closed state where the protrusion 1C fits into the first recess 2Ca, the support portion 2A has a relatively large deflection amount W1. Also, in the opening / closing door 2, the second recess 2Cb at a distance L2 close to the base end 2Aa of the support portion 2A is formed at a deep depth T2, so that in the open state where the protrusion 1C fits into the second recess 2Cb, the support portion 2A has a relatively small deflection amount W2. As described above, in the opening / closing structure of the embodiment, the support portion 2A is a cantilever beam and is more likely to deflect the farther from the base end 2Aa and closer to the tip 2Ab, so the deflection amounts W1 and W2 of the support portion 2A are set by varying the depths T1 and T2 depending on the arrangement of the distances L1 and L2 of the recesses 2Ca and 2Cb. Therefore, in the opening and closing structure of the embodiment, the loads P1, P2 that deflect the support portion 2A are equivalent in the closed state and the open state of the opening and closing door 2, allowing the operator to perform the opening and closing operation with a natural operational feel. If it is desired to make the operational feel heavier in either the closed state or the open state, the depths T1, T2 of the corresponding recesses 2Ca, 2Cb can be made shallower, and conversely, if it is desired to make the operational feel lighter, the depths T1, T2 of the corresponding recesses 2Ca, 2Cb can be made deeper, thereby setting the amounts of deflection W1, W2 and appropriately setting the loads P1, P2 that deflect the support portion 2A.

[0022] Here, the deflection amounts W1 and W2, which are the amounts of interference between the recesses 2Ca and 2Cb and the protrusion 1C at each position, are defined as the deflection amount Wmax of the cantilever formed by the support portion 2A. The distance L1 and L2 between the recesses 2Ca and 2Cb is defined as the length L from the fulcrum of the cantilever (the base end 2Aa of the support portion 2A) to the force point (the recesses 2Ca and 2Cb). The loads P1 and P2 that deflect the support portion 2A are defined as the load P applied to the force point of the cantilever. When the cantilevers are made of the same material and have the same cross-sectional shape (cross-section perpendicular to the length), the load P is determined by the beam length L and the deflection amount Wmax using the following formula 1.

[0023]

number

[0024] In Equation 1, E is Young's modulus, b is the cross-sectional width of the cantilever beam, and h is the cross-sectional height of the cantilever beam. Because the load P depends on the cube of the beam length L, even a slight difference in the beam length L results in a large difference in the value of the load P, resulting in a difference in the operational feel between the closed and open states of the opening / closing door 2. Therefore, the opening / closing structure of the embodiment adjusts the depths T1 and T2 of the recesses 2Ca and 2Cb based on Equation 1 to set the deflection amounts W1 and W2, determine the loads P1 and P2, and appropriately set the operational feel. Note that in a structure in which the opening / closing door 2 pivots in a cantilevered manner relative to the main body 1, as in the opening / closing structure of the embodiment, adjusting the distances L1 and L2 is difficult, and the deflection amounts W1 and W2 are adjusted to adjust the loads P1 and P2.

[0025] As shown in Fig. 4, the third recess 2Cc connects the first recess 2Ca and the second recess 2Cb and is formed in an arc shape centered on the support shaft 1B (shaft hole 2B). Therefore, the third recess 2Cc is disposed on a path that the protrusion 1C follows while the opening / closing door 2 is moved between the closed state and the open state. In the opening / closing structure of the embodiment, the third recess 2Cc is formed so that the fitting shape with the protrusion 1C gradually differs between the first recess 2Ca and the second recess 2Cb. Specifically, as shown in Fig. 5, the third recess 2Cc is formed so that the depth T3 from the plate surface of the support portion 2A becomes shallower as it approaches the first recess 2Ca, which has a relatively shallow depth T1, and becomes deeper as it approaches the second recess 2Cb, which has a relatively deep depth T2. Therefore, as the opening / closing door 2 moves between the closed and open states, the deflection amounts W1 and W2 of the support portion 2A are adjusted, and the load P3 that deflects the support portion 2A becomes equal along the length of the third recess 2Cc, allowing the operator to perform opening and closing operations with a consistent operational feel between the first recess 2Ca and the second recess 2Cb. In the opening / closing structure of the embodiment, the depth T3 of the third recess 2Cc is shallower than the depths T1 and T2, and a step 2Cd is formed at the boundary where the third recess 2Cc connects to the first recess 2Ca and the second recess 2Cb. As a result, as the opening / closing door 2 reaches the closed and open states, the protrusion 1C fits into the first recess 2Ca and the second recess 2Cb via the step of the step 2Cd. Therefore, in the opening / closing structure of the embodiment, when the opening / closing door 2 is operated between the closed and open states and passes the step 2Cd, the protrusion 1C drops into the first recess 2Ca and the second recess 2Cb, providing the operator with a tactile response. If no tactile sensation is desired, the step 2Cd need not be provided, and the depth T3 may be set to the same dimension as the depths T1 and T2.

[0026] Fig. 6 is a plan view showing the main parts of another example of the opening and closing structure of the embodiment. Fig. 7 is a cross-sectional view showing the main parts of another example of the opening and closing structure of the embodiment. Figs. 6 and 7 show a recess 2D which is different from the recess 2C described above. The recess 2D includes a first recess 2Da, a second recess 2Db, and a third recess 2Dc.

[0027] The first recess 2Da is provided at a position where it fits with the protrusion 1C when the door 2 is rotated in one direction to open or close, in this embodiment, when the door 2 is moved to the closed state. The first recess 2Da is formed so that the middle of the conical or hemispherical protruding end of the protrusion 1C fits into the opening edge.

[0028] The second recess 2Db is provided at a position where it fits into the protrusion 1C when the door 2 is rotated in the other direction for opening or closing, in this embodiment, when the door 2 is moved to the open state. The second recess 2Db is formed so that the middle of the conical or hemispherical protruding end of the protrusion 1C fits into the opening edge.

[0029] The first recess 2Da and the second recess 2Db are arranged on a circular locus centered on the axial hole 2B. In this embodiment, the first recess 2Da and the second recess 2Db are arranged in a positional relationship of 90 degrees about the axial hole 2B in order to rotate the opening / closing door 2 by 90 degrees between the closed state and the open state. For example, when the opening / closing door 2 is rotated by 100 degrees between the closed state and the open state, the first recess 2Da and the second recess 2Db are arranged in a positional relationship of 100 degrees about the axial hole 2B.

[0030] Furthermore, the first recess 2Da and the second recess 2Db are arranged such that, in the extension direction (front-rear direction (Z direction)) of the support part 2A extending in a cantilevered manner from the opening / closing door 2, the first recess 2Da is arranged on the tip 2Ab side and the second recess 2Db is arranged on the base end 2Aa side. The first recess 2Da is arranged at a position distance L1 from the base end 2Aa of the support part 2A. The second recess 2Db is arranged at a position distance L2 from the base end 2Aa of the support part 2A. Regarding the distances L1 and L2, the distance L1 of the first recess 2Da is longer than the distance L2 of the second recess 2Db.

[0031] The first recess 2Da is formed in a circular shape, with the opening edge having a width H1 across. The second recess 2Db is formed in a circular shape, with the opening edge having a width H2 across. The widths H1 and H2 are such that the width H1 of the first recess 2Da is smaller than the width H2 of the second recess 2Db. These widths H1 and H2 are set so that the cantilevered support portion 2A bends in the vertical direction when the protrusion 1C fits into the recesses 2Da and 2Db. The bending of the support portion 2A allows the opening / closing door 2 to be positioned tightly relative to the main body 1 in both the closed and open states.

[0032] 6 and 7(a), the opening / closing door 2 has a first recess 2Da at a distance L1 far from the base end 2Aa of the support portion 2A, which is formed with a small width H1, so that in a closed state where the protrusion 1C fits into the first recess 2Da, the support portion 2A deflects by a relatively large amount W1 due to the engagement of the thin, tip-side end of the protrusion end of the protrusion 1C. Also, as shown in FIGS. 6 and 7(b), the opening / closing door 2 has a second recess 2Db at a distance L2 close to the base end 2Aa of the support portion 2A, which is formed with a large width H2, so that in an open state where the protrusion 1C fits into the second recess 2Db, the support portion 2A deflects by a relatively small amount W2 due to the engagement of the thick, base-side end of the protrusion end of the protrusion 1C. As described above, in the opening / closing structure of the embodiment, the support portion 2A is a cantilever beam, and the farther it is from the base end 2Aa and the closer it is to the tip 2Ab, the more easily it bends. Therefore, the widths H1 and H2 of the recesses 2Da and 2Db are varied depending on the distances L1 and L2 between the recesses 2Da and 2Db to set the deflection amounts W1 and W2 of the support portion 2A. Therefore, in the opening / closing structure of the embodiment, the loads P1 and P2 that deflect the support portion 2A are equivalent in the closed and open states of the opening / closing door 2, allowing the operator to perform opening and closing operations with a natural feel. Note that if a heavier operation feel is desired in either the closed or open state, the widths H1 and H2 of the corresponding recesses 2Da and 2Db are reduced. Conversely, if a lighter operation feel is desired, the widths H1 and H2 of the corresponding recesses 2Da and 2Db are increased to set the deflection amounts W1 and W2, and the loads P1 and P2 that deflect the support portion 2A can be appropriately set. In the embodiment, as shown in FIG. 6, the second recess 2Db is at the closest distance L2 from the base end 2Aa of the support portion 2A in the recess 2D, and when the deflection amount W2 is made smallest, the width H2 may be formed so that the protruding end of the convex portion 1C contacts the bottom of the second recess 2Db.

[0033] The third recess 2Dc connects the first recess 2Da and the second recess 2Db and is formed in an arc shape centered on the support shaft 1B (shaft hole 2B). Therefore, the third recess 2Dc is disposed on a path that the protrusion 1C follows while the opening / closing door 2 is moved between the closed state and the open state. In the opening / closing structure of the embodiment, the third recess 2Dc is formed so that the fitting shape with the protrusion 1C gradually differs between the first recess 2Da and the second recess 2Db. Specifically, the third recess 2Dc is formed so that the width H3 between the arc-shaped opening edges is smaller toward the first recess 2Da, which has a relatively small width H1, and is larger toward the second recess 2Db, which has a relatively large width H2. Therefore, as the opening / closing door 2 moves between the closed state and the open state, the deflection amounts W1 and W2 of the support portion 2A are adjusted, and the load P3 (see FIG. 5 ) that deflects the support portion 2A becomes equal along the length of the third recess 2Dc, allowing the operator to perform opening and closing operations with a consistent operational feel between the first recess 2Da and the second recess 2Db. In the opening / closing structure of the embodiment, the third recess 2Dc is formed with a width H3 smaller than the widths H1 and H2, and the boundary connecting it to the first recess 2Da or the second recess 2Db is formed as a narrowed portion 2Dd that is narrower than the widths H1 and H2. Therefore, as the opening / closing door 2 reaches the closed state and the open state, the protrusion 1C fits into the first recess 2Da or the second recess 2Db through the narrowed portion 2Dd. Therefore, in the opening / closing structure of the embodiment, as the opening / closing door 2 is operated between the closed state and the open state, the protrusion 1C passes through the narrowed portion 2Dd and falls into the first recess 2Da or the second recess 2Db, providing the operator with a tactile response. If no tactile sensation is desired, the narrowed portion 2Dd may not be provided, and the width H3 may be set to the same dimension as the widths H1 and H2.

[0034] Thus, the opening / closing structure of the embodiment is an opening / closing structure including an opening / closing door 2 that opens and closes the opening 1A of the main body 1, and includes a flexible support portion 2A that extends cantilever-like from the opening / closing door 2, a support shaft 1B that rotatably supports the support portion 2A relative to the main body 1, a convex portion 1C provided on the main body 1, and a concave portion 2C (2D) that is provided on the support portion 2A and engages with the convex portion 1C, the concave portion 2C (2D) having a first concave portion 2Ca (2Da) that engages with the convex portion 1C when the opening / closing door 2 moves in one direction to open or close, and a second concave portion 2Cb (2Db) that engages with the convex portion 1C when the opening / closing door 2 moves in the other direction to open or close, and the first concave portion 2Ca (2Da) and the second concave portion 2Cb (2Db) have different fitting shapes for the convex portion 1C.

[0035] The first recess 2Ca (2Da) and the second recess 2Cb (2Db) provided in the support portion 2A rotate around the support shaft 1B and engage with the protrusion 1C when the opening / closing door 2 moves to open or close. In the cantilevered support portion 2A, the first recess 2Ca (2Da) and the second recess 2Cb (2Db) have different distances L1 and L2 from the base end 2Aa of the support portion 2A, and therefore the loads due to the amount of deflection of the support portion 2A are different. Therefore, the operating feel transmitted to the operator when engaging with the protrusion 1C is different. In this regard, according to the opening / closing structure of the embodiment, the first recess 2Ca (2Da) and the second recess 2Cb (2Db) are configured to have different fitting shapes with respect to the protrusion 1C. Therefore, the opening / closing structure of the embodiment can adjust the amounts of deflection W1 and W2 of the support portion 2A to set the loads P1 and P2. Therefore, in the opening / closing structure of the embodiment, the loads P1 and P2 can be set appropriately, and the operational feeling transmitted to the operator when the first recess 2Ca (2Da) and the second recess 2Cb (2Db) are fitted into the protrusion 1C can be set.

[0036] In the opening / closing structure of the embodiment, the depths T1 and T2 of the first recess 2Ca and the second recess 2Cb are different, and the widths H1 and H2 of the first recess 2Da and the second recess 2Db are different.

[0037] In this opening / closing structure, the fitting shapes of the first recess 2Ca (2Da) and the second recess 2Cb (2Db) with respect to the protrusion 1C are varied depending on the depths T1, T2 and widths H1, H2, thereby adjusting the deflection amounts W1, W2 of the support portion 2A and setting the loads P1, P2. Note that in the opening / closing structure of the embodiment, the depths T1, T2 and widths H1, H2 of the first recess 2Ca and the second recess 2Cb may be different. That is, in the opening / closing structure of the embodiment, at least one of the depths T1, T2 and widths H1, H2 of the first recess 2Ca and the second recess 2Cb is different.

[0038] In the opening / closing structure of the embodiment, the first recess 2Ca (2Da) fits into the protrusion 1C when the opening / closing door 2 is closed, and the second recess 2Cb (2Db) fits into the protrusion 1C when the opening / closing door 2 is open.

[0039] This opening and closing structure allows the operator to set the operational feeling between the closed state and the open state of the opening and closing door 2.

[0040] In addition, in the opening and closing structure of the embodiment, the recess 2C (2D) further has a third recess 2Cc (2Dc) that connects the first recess 2Ca (2Da) and the second recess 2Cb (2Db) and is formed in an arc shape centered on the support axis 1B, and the fitting shape of the third recess 2Cc (2Dc) into the protrusion 1C gradually differs between the first recess 2Ca (2Da) and the second recess 2Cb (2Db).

[0041] This opening / closing structure can adjust the deflection amount W3 of the support portion 2A between the first recess 2Ca (2Da) and the second recess 2Cb (2Db) by using the third recess 2Cc (2Dc), and set the load P3. Therefore, the opening / closing structure of the embodiment can set the load P3 appropriately and set the operation feeling transmitted to the operator between the first recess 2Ca (2Da) and the second recess 2Cb (2Db).

[0042] In the opening / closing structure of the embodiment, the third recess 2Cc has a depth T3 that gradually changes between the first recess 2Ca and the second recess 2Cb. In the opening / closing structure of the embodiment, the third recess 2Dc has a width H3 that gradually changes between the first recess 2Da and the second recess 2Db.

[0043] In this opening / closing structure, the fitting shape of the third recess 2Cc (2Dc) between the first recess 2Ca (2Da) and the second recess 2Cb (2Db) with respect to the protrusion 1C is varied depending on the depth T3 and width H3, thereby adjusting the deflection amount W3 of the support portion 2A and setting the load P3. Note that in the opening / closing structure of the embodiment, the depth T3 and width H3 of the third recess 2Cc may be different between the first recess 2Ca and the second recess 2Cb. That is, in the opening / closing structure of the embodiment, at least one of the depth T3 and width H3 of the third recess 2Cc gradually varies between the first recess 2Ca and the second recess 2Cb. [Explanation of symbols]

[0044] 1 Main body 1A opening 1B Spindle 1C Convex part 2 Opening and closing doors 2A Support part 2C,2D recess 2Ca, 2Da First recess 2Cb, 2Db Second recess 2Cc, 2Dc Third recess T1, T2, T3 depth H1,H2,H3 width W1, W2, W3 deflection amount

Claims

1. An opening / closing structure including an opening / closing door that opens and closes an opening of a main body, a flexible support portion provided on the opening / closing door in a cantilevered manner; a support shaft that rotatably supports the support portion relative to the main body portion; a protrusion provided on the main body; a recess provided in the support portion and fitted into the protrusion; Including, An opening and closing structure in which the recess has a first recess that fits into the protrusion when the opening and closing door moves in one direction to open or close, and a second recess that fits into the protrusion when the opening and closing door moves in the other direction to open or close, and the first recess and the second recess have different fitting shapes with respect to the protrusion.

2. The opening and closing structure according to claim 1 , wherein at least one of the depth and width of the first recess and the second recess is different.

3. The opening and closing structure according to claim 1 or 2, wherein the first recess fits into the protrusion when the door is in a closed state, and the second recess fits into the protrusion when the door is in an open state.

4. 4. The opening and closing structure according to claim 1, wherein the recess further includes a third recess that connects the first recess and the second recess and is formed in an arc shape centered on the support shaft, and the fitting shape of the third recess into the convex portion gradually differs between the first recess and the second recess.

5. The opening and closing structure according to claim 4 , wherein at least one of a depth and a width of the third recess is gradually changed between the first recess and the second recess.

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