Fastening device and hook part

Abstract

Fastening device (10) in which a holding part (100) and a hook part (200) are rotatably coupled to one another about a rotation axis, the hook part (200) comprising: a hook main body (210); a latch (230) for closing the hook main body (210); and a coupled portion (270) to which a base end of the latch (230) is integrally coupled, wherein the coupled portion (270) extends from a connection point with the hook main body (210) in a direction along the rotation axis away from the hook main body (210) such that the coupling between the support part (100) and the hook part (200) is ensured, wherein the latch (230) has: a spring portion (240) arranged closer to the base end of the latch (230), the spring portion (240) being elastically configured to enable the latch (230) to be urged away from the hook main body (210); and a latch main body (250) coupled to the coupled portion (270) via the spring portion (240), and wherein the connection point of the snap lock (230) and the coupled portion (270) is further away from the hook main body (210) along the rotation axis than the connection point of the hook main body (210) and the coupled portion (270).

Description

Technical field

[0001] The present invention relates to a fastening device and to a hook part. State of the art

[0002] Various fastening devices have been developed so far. Patent Literature 1 discloses in its abstract that a hook part (23) is simply and firmly connected to a connecting body (11) attached to a belt. As further explained in Fig. 2 and Fig. 3 of the same document, an interior (16) of the connecting body (11) is shaped as a hemispherical cavity, and a coupling recess (15) with an insertion hole (19) is arranged at a base portion (18). A hook part (12) is provided with a spherical coupling portion (21), a hook part (23) with a locking portion (22) at a distal end extending from the coupling portion (21), and an additional latch (24) parallel to the hook part (23). When the hook part (23) of the hook part (12) is inserted into the coupling recess (15) of the connecting body (11), as shown in Fig. 2, the coupling region (21) of the hook part (12) engages in a hemispherical cavity (16) of the connecting body (11) and rotatably couples therewith.

[0003] Patent Literature 2 discloses in its Fig. 1 and Fig. 2 describes a structure in which a guide part (13), a locking part (14) with a projection (16), and a bridge (15) are arranged in a coupling region (10) of an annular claw body (2) used for coupling with a support body (1). The document describes that this structure allows the annular claw body to be assembled with the support body (1) through simple operation and can reduce backlash and maintain smooth rotation. State of the art documentsPatent literature Patent literature 1: JP H07-23 413 U Patent literature 2: JP H05-83 435 U Summary of the inventionTechnical problem

[0004] A resin part integrally formed with a hook part can be used as a latch of the hook part, thereby reducing the number of parts, facilitating easier assembly, and reducing product costs compared to a case where a separate metal part is used for the latch. However, when the resin part integrally formed with the hook part is used as the latch, there may be concerns that the "locking strength" may appear weaker than when the metal part is used.

[0005] In view of the aforementioned illustrative non-limiting concerns, the inventor of the present invention has discovered the importance of the structure capable of improving the appearance of the hook part or allowing functional additions. Solution to the problem

[0006] A fastening device (10) according to the invention can be a fastening device in which a holding part (100) and a hook part (200) are rotatably coupled to one another about an axis of rotation, wherein the hook part (200) has: a hook main body (210); a latch (230) for closing the hook main body (210); a coupled portion (270) to which a base end of the latch (230) is integrally coupled, the coupled portion (270) extending along the rotation axis away from the hook main body (210) such that the coupling between the support part (100) and the hook part (200) is ensured, wherein the latch (230) may have: a spring portion (240) arranged closer to the base end of the latch (230), the spring portion (240) being elastically configured to enable the latch (230) to be urged away from the hook main body (210); and a latch main body (250) coupled to the coupled portion (270) via the spring portion (240), and wherein the connection point of the snap lock (230) and the coupled portion (270) is further away from the hook main body (210) along the rotation axis than the connection point of the hook main body (210) and the coupled portion (270).

[0007] This configuration may allow for an improved appearance of the hook part or simpler functional additions. It should be noted that the extent of the dimension indicated by "wider" may be minor.

[0008] In a case where a right-left direction is defined as a direction orthogonal to a plane in which the latch (230) pivots about the spring portion (240) to open / close the hook main body (210), one of the hook main body (210) and the latch (230) may have at least one restricting portion (260, 267) for restricting the displacement of the other of the hook main body (210) and the latch (230) in the right-left direction. This can prevent the latch from detaching from the hook main body.

[0009] The restriction portion (260, 267) may preferably be configured to sandwich the hook main body (210) or the latch (230) in the right-left direction. This can better sufficiently prevent the latch from detaching from the hook main body.

[0010] The restriction portion (260) may preferably be engageable with the hook main body (210) or the latch (230) to restrict the displacement of the latch (230) in a direction away from the hook main body (210). This can better sufficiently prevent the latch from detaching from the hook main body.

[0011] The restriction portion (260) arranged on the hook main body (210) may have at least one first projection (263, 264), the latch (230) may have at least one second projection (253, 254), the second projection (253, 254) may be shaped to protrude in the right-left direction, and the first projection (263, 264) may extend in a direction other than the right-left direction to be engageable with the second projection (253, 254).

[0012] The restriction portion (260) arranged on the latch (230) may have at least one first projection (263, 264), the hook portion (210) has at least one second projection (253, 254), and the first projection (263, 264) and the second projection (253, 254), which are to be locked into engagement with each other, protrude in the right-left direction opposite to each other.

[0013] In a case where the restricting portion (260) has a left restricting wall (261) and a right restricting wall (262) arranged in the right-left direction so as to sandwich the hook main body (210) or the latch (230), the fastening device (10) may further comprise: a first projection (263, 264) arranged on at least one of the left restricting wall (261) and the right restricting wall (262); and a second projection (253, 254) engageable with the first projection (263, 264), wherein the locking engagement of the first projection (263, 264) and the second projection (253, 254) restricts the displacement of the latch (230) away from the hook main body (210). This can better prevent the latch from detaching from the hook main body.

[0014] In a case where the restriction portion (260) includes a left restriction wall (261) and a right restriction wall (262) arranged in the right-left direction so as to sandwich the hook main body (210) or the latch (230), the latch main body (250) includes a latch distal end (231) engaged with the hook distal end (211) of the hook main body (210), and a thickness of the latch distal end (231) in the right-left direction is greater than a thickness of a portion of the latch main body (250) sandwiched by the left restriction wall (261) and the right restriction wall (262) in the right-left direction. This can contribute to a more stable appearance of the hook part.

[0015] A recess may preferably be arranged at the coupled portion (270), and a base end of the spring portion (240) may preferably be coupled to a surface of the recess.

[0016] Preferably, a notch (R28) extending at least through the coupled region (270) from the surface of the recess to the hook main body (210) may be provided, and the notch (R28) may partially accommodate the latch (230). A pivoting movement of the latch (230) may preferably be ensured.

[0017] The hook part (200) can further comprise a support (280) between the coupled region (270) and the hook main body (210), the holding part (100) can sit on the support (280), wherein the connection point of the snap lock (230) and the coupled region (270) can be further away from the hook main body (210) along the rotation axis than the support (280).

[0018] The hook part (200) can further comprise a support (280) on which the retaining part (100) can sit, and the latch (230) can be shaped such that, together with the support (280), it can provide a support surface for the retaining part (100). The rotational movement of the retaining part on the hook part can thereby be further stabilized.

[0019] A hook part (200) according to another aspect of the present invention, which can be fastened to a support part (100) so as to be rotatable about a rotation axis, wherein the hook part (200) can comprise: a hook main body (210); a latch (230) for closing the hook main body (210); and a coupled portion (270) to which a base end of the latch (230) is integrally coupled, the coupled portion (270) extending along the rotation axis away from the hook main body (210) in such a way that the coupling between the support part (100) and the hook part (200) is ensured, wherein the latch (230) may comprise: a spring portion (240) arranged closer to the base end of the latch (230), the spring portion (240) being elastically configured to enable the latch (230) to be urged away from the hook main body (210); and a latch main body (250) coupled to the coupled portion (270) via the spring portion (240), and the connection point of the latch (230) and the coupled portion (270) is farther away from the hook main body (210) along the rotation axis than the connection point of the hook main body (210) and the coupled portion (270). Advantageous effects of the invention

[0020] The present invention can provide a structure capable of enabling improvement of an appearance of the hook part or easier functional additions. Brief description of the drawings [ Fig. 1] Fig. 1 is a perspective view of a fastening device according to a first embodiment of the present invention, illustrating a support part and a hook part before coupling. [ Fig. 2] Fig. 2 is a perspective view of the fastening device according to the first embodiment of the present invention, illustrating the support part and the hook part after coupling. [ Fig. 3] Fig. 3 is a schematic vertical cross-sectional view of the fastening device according to the first embodiment of the present invention and shows a schematic cross-sectional view in a plane orthogonal to the left-right direction. [ Fig. 4] Fig. Fig. 4 is a partially enlarged side view of the fastening device according to the first embodiment of the present invention, which is a partially enlarged side view of a portion corresponding to the dashed circle in Fig. 3 and represents the engagement of the projection of a restriction portion of the hook main body and the projection of the latch main body. [ Fig. 5] Fig. Fig. 5 is a part of a horizontal cross-sectional view of the fastening device according to the first embodiment of the present invention, which is a horizontal cross-section taken along the dashed line X5-X5 of the Fig. 4 represents. [ Fig. 6] Fig. 6 is a partial schematic vertical view of the fastening device according to the first embodiment of the present invention, showing a cross section of the support part and a side view of the hook part. [ Fig. 7] Fig. 7 is a schematic side view of the hook portion of the fastener according to the first embodiment of the present invention, illustrating an injection-molded latch in an initial position. [ Fig. 8] Fig. 8 is a schematic side view of the hook part of the fastening device according to the first embodiment of the present invention, illustrating a process in which the latch is pushed between a left restricting wall arranged in the hook main body and a right restricting wall. [ Fig. 9] Fig. Fig. 9 is a part of a horizontal cross-sectional view of the fastening device according to the first embodiment of the present invention, which is a horizontal cross-section taken along the dashed line X9-X9 of Fig. 8 represents. [ Fig. 10] Fig. 10 is a vertical schematic diagram of a fastening device according to a second embodiment of the present invention, showing a cross section of a support part and a side view of a hook part. [ Fig. 11] Fig. Fig. 11 is a horizontal schematic diagram of a fastening device according to the second embodiment of the present invention, showing a horizontal cross section along the chain line X11-X11 of Fig. 10 represents. [ Fig. 12] Fig. Fig. 12 is a horizontal schematic view of the fastening device according to the second embodiment of the present invention, which is a modification of the Fig. 11 represents. [ Fig. 13] Fig. 13 is a vertical schematic diagram of a fastening device according to a third embodiment of the present invention, illustrating a cross section of a silicone cover. [ Fig. 14] Fig. 14 is a perspective view of a silicone cover according to the third embodiment of the present invention. [ Fig. 15] Fig. 15 is a vertical schematic view of a fastening device according to a fourth embodiment of the present invention, illustrating a cross section of a support part and a side view of a hook part. Description of the embodiments

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The respective embodiments are not independent of each other; they can be appropriately combined by those skilled in the art without requiring detailed description, and synergistic effects from such combination can also be understood. Duplicated description among the embodiments is omitted in principle. Drawings to which reference should be made are intended in principle to describe the present invention and are simplified where appropriate.

[0022] The following embodiments are shown with the directions up-down, right-left and front-back as shown for reference in Fig. 1. The up-down direction is a direction parallel to the rotation axis of a bracket part and a hook part. The front-back direction and the right-left direction are directions orthogonal to the up-down direction and orthogonal to each other. The right-left direction is a direction orthogonal to the plane in which the latch pivots to open / close the hook main body. <Erste Ausführungsform>

[0023] A first embodiment is described with reference to the Fig. 1 to 9 described. Fig. 1 is a perspective view of a fastening device illustrating a bracket part and a hook part before coupling. Fig. 2 is a perspective view of the fastening device showing the bracket part and the hook part coupled together. Fig. 3 is a schematic vertical cross-sectional view showing a schematic cross-sectional view of the fastening device in a plane orthogonal to the left-right direction. Fig. Fig. 4 is a partially enlarged side view of the fastening device, which is a partially enlarged side view of a portion corresponding to the dashed circle in Fig. 3, and represents the engagement of a lug of a restriction portion of the hook main body and a lug of the latch main body. Fig. Figure 5 is a part of a horizontal cross-sectional view of the fastening device, which is a horizontal cross-section along the dashed line X5-X5 of the Fig. 4 represents. Fig. Figure 6 is a partial schematic vertical view of the fastening device showing a cross-section of the support part and a side view of the hook part. Fig. Figure 7 is a schematic side view of the hook portion of the fastener, illustrating an injection-molded latch in an initial position. Fig. 8 is a schematic side view of the hook part of the fastening device, illustrating a process in which the latch is pushed between a left restricting wall and a right restricting wall arranged in the hook main body. Fig. Figure 9 is a part of a horizontal cross-sectional view of the fastening device, which is a horizontal cross-section along the dashed line X9-X9 of the Fig. 8 represents.

[0024] The fastening device 10 may be a fastening device in which a support part 100 and a hook part 200 are rotatably coupled about a rotation axis (not shown) parallel to the up-down direction. The support part 100 may be a member to which a strap, such as a shoulder strap, can be attached. The support part 100 may be referred to as a "belt attachment part" or a "band attachment part." The hook part 200 may be a member that can be hooked onto a ring body, such as a metal or synthetic resin ring. The support part 100 and the hook part 200 in the present invention may be resin-formed parts and may be manufactured using a mold having a cavity of a desired shape.

[0025] By way of illustration and not limitation, the fastening device 10 can be used to attach a shoulder strap to a bag body. Note that the precise configuration and shape of the support portion 100 are arbitrary and may have a shape other than that of an annular element. The precise configuration and shape of the hook portion 200 are also arbitrary, and its hook shape may also be different from the illustrated shape.

[0026] As in the Fig. 1 to 3, the support member 100 may be an annular element having a belt attachment rod 110 and a shaft holding portion 120. The belt attachment rod 110 may be flat to facilitate / enable wrapping the belt. The shaft holding portion 120 may have a through-hole H12 penetrating the support member 100 at the top and bottom, as well as slots SL16, SL17 communicating with the through-hole H12 to allow expansion of the through-hole H12.

[0027] How to Fig. 6, the shaft holding portion 120 may be provided with an inner space having a gradually increasing width or configured to expand radially from top to bottom. In other words, the inner surface 125 of the shaft holding portion 120 may be configured to extend radially outward from top to bottom along the rotation axis. Note that the radial direction referred to here is understood with respect to the rotation axis of the support part 100 and the hook part 200. The inner surface 125 of the shaft holding portion 120 may contact the outer surface 275 of a shaft 270 described later, thereby preventing a separating movement of the support part 100 and the hook part 200 and ensuring stable rotation.

[0028] As in the Fig. As shown in FIGS. 1 to 3, the hook member 200 is provided with a hook main body 210, a latch 230 for closing the hook main body 210, and a shaft 270 to which the base end of the latch 230 is integrally coupled. The shaft 270 is an axially formed portion extending from the hook main body 210 to ensure coupling between the hook member 200 and the support member 100. A support 280 may be provided between the hook main body 210 and the shaft 270. Note that the "shaft" may be referred to as a "coupled portion" considering that the latch 230 is coupled to the shaft 270.

[0029] The hook main body 210 may be a J-shaped hook member with a desired stability and includes a distal hook end 211 and a hook base end 212. The hook main body 210 may include a main rod 213 extending downward from the hook base end 212, an arc portion 214 extending forward and upward to form an arc shape from the distal end of the main rod 213, and a sub-rod 215 extending upward from the distal end of the arc portion 214. The distal hook end 211 may be the same as the distal end of the sub-rod 215, and the hook base end 213 may be the same as the base end portion of the main rod 213.

[0030] The hook main body 210 may include at least one curved portion, e.g., the curved portion 214 of the present invention, which allows a metal or resin ring or the like of a pocket to be held in the hook main body 210. As shown in Fig. 7, the hook member 200 may be provided with a receiving portion H210 in which the metal or resin ring or the like is received, and may be provided with an opening H10 which is a passage allowing the metal or resin ring and the like to enter and exit from the receiving portion H210.

[0031] The shaft 270 may be disposed above the support 280 at the hook base end 212 of the hook main body 210. The support 280 may be a substantially disc-like portion upon which the retaining member 100 may sit. The shaft 270 may be an axially shaped portion extending from the support 280 in the up-down direction along the rotational axis of the retaining member 100 and the hook member 200, and in the present embodiment may include a lower shaft 272 and an upper shaft 274.

[0032] When the shaft 270 of the hook part 200 is inserted into the shaft holding portion 120 of the support part 100 and both are engaged with each other, the shaft holding portion 120 of the support part 100 is loosely sandwiched in the up-down direction by the upper shaft 274 located thereabove and the support 280 located therebelow, thereby ensuring smooth rotation of the support part 100 and the hook part 200 about the rotation axis.

[0033] The lower shaft 272 may be a portion having a gradually decreasing diameter as it extends from the hook main body 210, and may be disposed in the interior of the shaft holding portion 120 of the support member 100 and surrounded by the shaft holding portion 120. The lower shaft 272 is provided with a recess R27 having a depth direction corresponding to the rearward direction, and the lower shaft 272 may have a semi-cylindrical shape.

[0034] The upper shaft 274 may be a portion above the lower shaft 272 and may be configured in a plan view into an elliptical shape that is elongated in the front-back direction and narrowed in the right-left direction. Its peripheral portion may be configured into a tapered or curved surface. The upper shaft 274 may be a portion that will pass through the through-hole H12 of the shaft holding portion 120 and be disposed above the shaft holding portion 120 to ensure the coupling of the support part 100 and the hook part 200, and therefore may preferably be configured to easily pass through the interior of the shaft holding portion 120.

[0035] The recess R27 of the lower shaft 272 has an upper surface 1227, a lower surface 1327 and a base surface 1127, as shown in Fig. 3. The base surface 1127 connects the upper surface 1227 and the lower surface 1327, which are opposite to each other and spaced apart in the up-down direction. The base end of the latch 230 is connected to a joint of the upper surface 1227 and the base surface 1127, thereby ensuring appropriate elasticity of the latch without causing excessive deformation of a spring portion 240 described later. A notch R28 is provided extending through the lower shaft 272 and the support 280 from the lower surface 1327 of the recess R27. The latch 230 is disposed in the notch R28, thereby enabling appropriate pivotal movement of the latch 230. In an embodiment where the overlay 280 is not present, the notch R28 may penetrate at least the lower shaft 272 in the up-down direction.

[0036] As in Fig. 6, a sandwiching portion 267 may be arranged to sandwich the latch 230 housed in the notch R28 from both the left and right sides. The sandwiching portion 267 includes a left sandwiching portion 268 and a right sandwiching portion 269. The left sandwiching portion 268 includes a portion of the lower shaft 272 and a portion of the overlay 280. The right sandwiching portion 269 includes a portion of the lower shaft 272 and a portion of the overlay 280. The sandwiching portion 267 may suitably restrict leftward, rightward, or both left and right displacement of the latch 230 and may prevent the latch 230 from disengaging.The sandwiched area 267 can be understood as a restriction area that restricts right-left displacement of the latch 230. Note that the right-left direction may be a direction orthogonal to the plane in which the latch 230 pivots to open / close the hook main body 210.

[0037] The latch 230 may be arranged to close the opening H10 of the hook main body 210 and, when the latch pivots, to open / close the opening H10. The latch 230 may include the spring portion 240 and a latch main body 250 connected to the spring portion 240. The spring portion 240 may be elastically configured to allow the latch 230 to be urged toward an initial position of the latch 230. Note that "toward an initial position of the latch" may be an example of a direction away from the hook main body 210. Although not necessarily limited thereto, the latch main body 250 may be configured to be more stable than the spring portion 240; in other words, it may be configured to have a larger dimension or volume than the spring portion 240.The latch 230 is designed such that the spring region 240 and the latch main body 250 are each assigned a spring function and a closing function.

[0038] The latch main body 250 of the latch 230 may be shaped such that, together with the support 280, it forms a support surface for the support part 100. As shown in Fig. 3, a projection 236 may preferably be arranged in the latch main body 250, and the projection 236 preferably has a surface that is flush with the bearing surface S28 of the latch main body 250 shown in Fig. 1. Such a structure allows the support member 100 to rest on the support surface, which is substantially continuous in the circumferential direction, and can stabilize its rotation.

[0039] As from Fig. As can be seen from Fig. 7, which shows the hook part 200 removed from a mold, the initial position of the latch 230 may be substantially parallel to the front-to-back direction orthogonal to the repeatedly mentioned rotation axis. The latch 230 in the initial position can be pivoted downward and backward about the spring portion 240, and a latch distal end 231 of the latch 230 can be stopped by the hook distal end 211 of the hook main body 210. Although the latch 230 is urged toward the initial position due to the elasticity of the spring portion 240, its return is restricted by the hook distal end 211. In this state, even if an operating portion 235 of the latch 230 is pushed backward, the latch 230 will return to the state where the latch 230 is stopped by the distal hook end 211 due to the elasticity of the spring portion 240.

[0040] As in Fig. 2, arcuate recesses 215 are provided on respective front sides of a left restricting wall 261 and a right restricting wall 262, which form a restricting portion 260 described later. The operating portion 235 of the latch 230 protrudes forward from the recess 215, so that the latch 230 is easily displaced in the front-to-back direction by pushing in the restricting portion 235.

[0041] The latch 230 may be elongated in the up-down direction if the Fig. 1 to 3 is closed. The spring portion 240 of the latch 230 may be formed to have a narrower width and a thinner thickness than the latch main body 250. That is, the maximum width of the spring portion 240 may be less than the maximum width of the latch main body 250, and the maximum thickness of the spring portion 240 may be less than the maximum thickness of the latch main body 250.

[0042] In the present embodiment, the latch main body 250 may be integrally coupled to the shaft 270 via the spring portion 240. According to this configuration, an appearance change or functional addition to the latch main body 250 may be more easily achieved. For example, the shape of the latch 230 may be improved to present an actual or apparent "stronger latch force." Note that, in the present embodiment, the elasticity of the latch 230 may be mainly ensured by the spring portion 240, and the strength / rigidity of the latch 230 may be mainly ensured by the latch main body 250. The latch main body 250 may be configured to be much larger than the spring portion 240 to provide strength / rigidity and ensure the degree of shape freedom of the latch 230.

[0043] As in Fig. As shown in FIG. 1, a wider width portion 251, which is wide in the right-left direction, is arranged on the distal end side of the latch main body 250, and a narrower width portion 252, which is narrower than the wider width portion 251, is arranged on its base end side. The cutout in the hook main body 210 can be closed by the wider width portion, making it possible to ensure an actual or apparent "stronger stopping force."

[0044] The connection point of the latch, that is, the connection point of the base end of the spring portion 240 of the present invention, and the shaft 270 may be located farther away from the hook main body 210 along the rotation axis than the connection point of the hook main body 210 and the shaft 270. In this case, it may be possible to appropriately ensure the pivoting movement of the latch 230. Note that in the present invention, the connection point of the hook main body 210 and the shaft 270 is the position where the support 280 is arranged, since the support 280 is arranged between the hook main body 210 and the shaft 270. It can therefore be said that the connection point of the latch 230 and the shaft 270 is farther away from the hook main body 210 along the rotation axis than the support 280. In the Fig. 3, the spring portion 240 is disposed in the recess R27 of the lower shaft 272 and extends adjacent to the lower shaft 272 from the base end toward the latch main body 250 side.

[0045] The spring portion 240 may be mechanically or structurally weaker than the latch main body 250. Accordingly, as can be seen from Fig. 6, the spring portion 240 of the latch 230 is preferably surrounded and protected by the shaft holding portion 120 of the support member 100. The spring portion 240, in a bent state, is preferably prevented from contacting the inner surface 125 of the shaft holding portion 120. From this viewpoint, the base end of the spring portion 240 is preferably integrally coupled to the base side of the recess R27 of the lower shaft 272, i.e., near the base surface 1127.

[0046] The hook main body 210 may preferably include a restricting portion 260 for restricting the right-left displacement of the latch 230. The restricting portion 260 may be configured to sandwich the latch 230, that is, the narrow width portion 252 of the latch main body 210, and can thereby suppress countermovement of the latch 230 in the right-left direction and suppress detachment of the latch distal end 231 from the hook distal end 211 of the hook main body 210. In the present embodiment, the restricting portion 260 includes a left restricting wall 261 and a right restricting wall 262 spaced apart in the right-left direction to sandwich the latch 230.The left restricting wall 261 and the right restricting wall 262 are each configured to extend from the hook base end 212 of the hook main body 210 toward the distal hook end 211.

[0047] In order for the restricting portion 260 to restrict the return of the latch 230 to its position away from the hook main body 210, the restricting portion 260 and the latch 230 may preferably be engaged with each other. Various forms can be considered as a specific structure to achieve this goal, and an example is presented in which at least one first projection 263 or 264 is disposed on the restricting portion 260 and at least one second projection 253 or 254 is disposed on the latch 230. The second projection 253 or 254 is provided in a shape protruding in the right-left direction, and the first projection 263 or 264 extends in a direction different from the right-left direction, that is, downward in the present embodiment, to engage with the second projection 253 or 254.

[0048] As can be seen from the additional references to Fig. 4 and Fig. 5, the first lugs 263 and 264 are arranged on the left restricting wall 261 and the right restricting wall 262, respectively, and the second lugs 253 and 254 are arranged on the latch 230, which respectively engage the first lugs 263 and 264. The engagement of each first lug 263 or 264 and each second lug 253 or 254 prevents the latch 230 from moving back to a position closer to the initial position.

[0049] The first projection 263 may be a lower end of the left restriction wall 261, which is opposite to the distal hook end 211 and protrudes downward toward the side of the distal hook end 211. The first projection 264 may be a lower end of the right restriction wall 262, which is opposite to the distal hook end 211 and protrudes downward toward the side of the distal hook end 211. In the relationship between the first projection 263 and the first projection 264, the first projection 263 may be called a (first) left-side projection, and the first projection 264 may be called a (first) right-side projection.

[0050] The second protrusion 253 may be a leftward protrusion located on the left surface of the latch main body 250. The second protrusion 254 may be a rightward protrusion located on the right surface of the latch main body 250. In this way, the second protrusion 253 and the second protrusion 254 protrude opposite to each other in the right-left direction. Regarding the relationship between the second protrusion 253 and the second protrusion 254, the second protrusion 253 may be called a "(second) left-side protrusion" and the second protrusion 254 may be called a "(second) right-side protrusion."The engagement of the first lug 263 and the second lug 253 and the engagement of the first lug 264 and the second lug 254 can prevent pivotal movement of the latch 230 to the initial position and prevent detachment of the latch distal end 231 from the hook distal end 211 of the hook main body 210.

[0051] As in Fig. 5, a bottom surface S250 of the latch main body 250 of the latch 230, which contacts the left restriction wall 261 and the right restriction wall 262 when the latch 230 is pressed between the left restriction wall 261 and the right restriction wall 262, is shaped to have a curved surface. Furthermore, each part of the left restriction wall 261 and the right restriction wall 262 with which the latch 230 comes into contact when the latch 230 is pressed between the left restriction wall 261 and the right restriction wall 262 is provided with the recesses 265 and 266, respectively. Curved surfaces may also be provided instead of the recesses 265 and 266. As described with reference to FIG. Fig. 7 to 9, the above-described recesses 265 and 266 and the curved bottom S250 can facilitate the outward displacement of the left restricting wall 261 and the right restricting wall 262 and a concomitant increase in the distance between the left restricting wall 261 and the right restricting wall 262, as indicated by the dashed arrow in Fig. 9, when the latch 230, which is in an initial position, is pressed between the left restricting wall 261 and the right restricting wall 262.

[0052] As apparent from the above description, the latch 230 of the present embodiment may include the spring portion 240 disposed on the base end side of the latch 230 and the latch main body 250 coupled to the shaft 270 via the spring portion 240. This configuration may enhance the appearance of the latch main body 250 or enable / facilitate functional addition.

[0053] The spring portion 240 may preferably be elastically configured to enable the latch 230 to be urged toward the latch initial position. The connection point of the latch 230, i.e., the base end of the spring portion 240 of the present embodiment and the shaft 270, may preferably be located farther away from the hook main body 210 along the rotation axis than the connection point between the hook main body 210 and the shaft 270. In this case, it is possible to adequately ensure the pivoting movement of the latch 230.

[0054] The present embodiment allows the latch main body 250 to be made much larger, e.g., much larger than the spring portion 240, thereby facilitating / enabling the provision or presentation of a “stronger latch force.”

[0055] In the present embodiment, the spring portion 240 is arranged, which is mechanically and structurally weaker than the latch main body 250. However, the impression of a "weaker latch" need not be given. This is the case because the spring portion 240 is surrounded by the shaft holding portion 120 of the support portion 100, is sufficiently protected from external influences, and does not appear externally.

[0056] In the present embodiment, the wider width portion 251 can be arranged on the distal end side of the latch main body 250, and a more stable appearance can be presented.

[0057] In the case where the latch 230 is provided with the spring portion 240 as in the present invention, there may be a concern that the latch main body may pivot left or right around the spring portion 240, resulting in the latch 230 becoming more easily detached. Considering this problem, in the present embodiment, the hook main body 210 is provided with the left restricting wall 261 and the right restricting wall 262, which can sandwich the latch 230 to restrict the left and right displacement of the latch main body 250. This can reduce or suppress problems when the latch 230 is configured as described above. <Zweite Ausführungsform>

[0058] A second embodiment will be described with reference to the Fig. 10 to 12 described. Fig. 10 is a vertical schematic diagram of a fastening device showing a cross-section of its support part and a side view of its hook part. Fig. Figure 11 is a horizontal schematic view of the fastening device, showing a horizontal cross-section along the dot-dash line X11-X11 of the Fig. 10 represents. Fig. Figure 12 is a horizontal schematic representation of the fastening device, which is a modification of the Fig. 11 represents.

[0059] In the present embodiment, unlike the first embodiment, the restriction portion 260 for restricting the displacement of the latch 230 in the right-left direction is disposed not on the hook main body 210 but on the latch 230. In such a case, effects similar to those in the first embodiment can also be obtained.

[0060] Again, in the present invention, the latch main body 250 may be integrally coupled to the shaft 270 via the spring portion 240. It may be possible to ensure the elasticity of the latch 230 mainly by the spring portion 240 and to ensure the stability / rigidity of the latch 230 mainly by the latch main body 250. Furthermore, the connection point of the latch 230, that is, the connection point of the base end of the spring portion 240 of the present invention, and the shaft 270 may be located farther away from the hook main body 210 along the rotation axis than the coupling position of the hook main body 210 and the shaft 270, thereby appropriately ensuring the pivoting movement of the latch 230.

[0061] The latch main body 250 can be formed much larger than the spring portion 240 and can be provided with strength / rigidity, thereby ensuring a degree of shape freedom. According to this aspect, the shape of the latch 230 can be improved to present an actual or apparent "stronger latch force," which means that the restriction portion 260 can be arranged on the latch main body 250.

[0062] As in the Fig. 10 and Fig. 11, the restricting portion 260 may be configured to sandwich the hook main body 210, that is, the main rod 213 of the hook main body 210, thereby preventing the latch 230 from pivoting in the right-left direction and preventing the latch distal end 231 from disengaging from the hook distal end 211 of the hook main body 210. In the present embodiment, the restricting portion 260 includes the left restricting wall 261 and the right restricting wall 262 spaced apart from each other in the right-left direction to sandwich the main rod 213. The left restricting wall 261 and the right restricting wall 262 are each arranged to extend from the latch main body 210 toward the main rod 213.

[0063] The portion of the main rod 213 sandwiched by the left and right restriction walls 261 and 262 may be thinner. A decorative design may also be applied to both surfaces of the left and right restriction walls 261 and 262.

[0064] As in Fig. As shown in Fig. 10, when the latch 230 is stopped by the hook main body 210, a gap C280 is provided between the projection 236 and the support 280 disposed on the latch 230. This ensures a smooth pivoting movement of the latch 230.

[0065] Fig. 12 represents an amendment to the Fig. 11. Following the disclosure of the first embodiment, the first lugs 263 and 264 may be disposed on the left restricting wall 261 and the right restricting wall 262, respectively, and the second lugs 253 and 254, which respectively engage with the first lugs 263 and 264, may be disposed on the main rod 213 of the hook main body 210. The engagement of the first lugs 263 and 264 with the corresponding second lugs 253 and 254 restricts the return movement of the latch 230 to the initial position.In the present invention, the first projection 263 and the second projection 253 to be locked together have corresponding shapes that protrude opposite to each other in the right-left direction, and likewise, the first projection 264 and the second projection 254 to be locked together have corresponding shapes that protrude opposite to each other in the right-left direction.

[0066] The first projection 263 may be arranged in a shape projecting rightward from the inner surface of the left restriction wall 261 and may be aligned with the left surface of the main rod 213 in the manner shown in Fig. 12. The first projection 264 may be arranged in a shape projecting to the left from the inner surface of the right restriction wall 262 and may be in contact with the right surface of the main rod 213 in the state shown in Fig. 12. The second projection 253 may be disposed in a leftward protruding shape between the front surface and the left surface of the main rod 213. The second projection 254 may be disposed in a rightward protruding shape between the front surface and the right surface of the main rod 213. The engagement of the first projection 263 and the second projection 253, and the engagement of the first projection 264 and the second projection 254, may prevent pivotal movement of the latch 230 toward the initial position and may prevent disengagement of the latch distal end 231 from the hook distal end 211 of the hook main body 210. <Dritte Ausführungsform>

[0067] A third embodiment will be described with reference to the Fig. 13 and Fig. 14 described. Fig. Figure 13 is a vertical schematic view of a fastening device and shows a cross section of a silicone cover. Fig. 14 is a perspective view of the silicone cover.

[0068] In the present embodiment, instead of being surrounded by the shaft holding portion 120 of the support member 100 as in the first and second embodiments, the shaft 270 and the spring portion 240 of the hook member 200 are surrounded and protected by a separate protective member 300. In this case, effects similar to those of the aforementioned embodiments can also be obtained.

[0069] The protective element 300, which at least partially surrounds and protects the shaft 270 and the spring region 240, is, for example, an elastic cylindrical element and is made, for example, of silicone. A notch can preferably be arranged on the peripheral wall of the cylindrical protective element 300. This ensures easy attachment of the protective element 300 to the shaft 270. Of course, a continuous cylindrical protective element without such an interruption can also be used. A decorative design, such as characters, graphics, symbols, or a combination thereof, can also be applied to the outer peripheral surface of the protective element 300 and can enhance the aesthetic appearance of the fastening device 10. <Vierte Ausführungsform>

[0070] A fourth embodiment will be described with reference to Fig. 15 described. Fig.15 is a vertical schematic diagram of a fastening device showing a cross section of a support part and a side view of a hook part.

[0071] In the first embodiment, the left-right displacement of the latch 230 was restricted by both the sandwiched portion 267 and the restricting portion 260. In contrast, the left-right displacement of the latch 230 may be restricted only by the sandwiched portion 267, although this is not necessarily limited thereto. In this case, effects similar to those of the above-described embodiments can also be achieved. The sandwiched portion 267 may also be an embodiment of the restricting portion described in the first embodiment.

[0072] Based on the instructions described above, a person skilled in the art can add various modifications to each embodiment. The reference numerals included in the claims are for reference only and should not be relied upon under any circumstances to limit the scope of the claims. The specific configuration, shape, size, and material of the support part, the hook part, and the protective element are arbitrary. The specific configuration, shape, size, and material of the hook main body of the hook part, the shaft, the support, and the latch are arbitrary. The specific configuration, shape, size, and material of the spring part and the latch main body of the latch are arbitrary. The shaft may extend along an axis different from the rotation axis. The number of lugs and their specific configuration are arbitrary. List of reference symbols 10 Fastening device 100 bracket part 200 hook part 210 Hook main body 211 distal hook end 212 Hook base end 230 snap locks 231 distal latch end 235 operating area 240 spring range 250 latch main body 260 Restricted area 267 sandwich-like surrounding area 270 shaft

Claims

[1] Fastening device (10) in which a holding part (100) and a hook part (200) are rotatably coupled to one another about a rotation axis, the hook part (200) comprising: a hook main body (210); a latch (230) for closing the hook main body (210); and a coupled portion (270) to which a base end of the latch (230) is integrally coupled, wherein the coupled portion (270) extends from a connection point with the hook main body (210) in a direction along the rotation axis away from the hook main body (210) such that the coupling between the support part (100) and the hook part (200) is ensured, wherein the latch (230) has: a spring portion (240) arranged closer to the base end of the latch (230), the spring portion (240) being elastically configured to enable the latch (230) to be urged away from the hook main body (210); and a latch main body (250) coupled to the coupled portion (270) via the spring portion (240), and wherein the connection point of the snap lock (230) and the coupled portion (270) is further away from the hook main body (210) along the rotation axis than the connection point of the hook main body (210) and the coupled portion (270). [2] The fastening device (10) according to claim 1, wherein a right-left direction is defined as a direction orthogonal to a plane in which the latch (230) pivots about the spring portion (240) to open / close the hook main body (210), wherein one of the hook main body (210) and the latch (230) has at least one restricting portion (260, 267) for restricting the displacement of the other of the hook main body (210) and the latch (230) in the right-left direction. [3] The fastening device according to claim 2, wherein the restriction portion (260, 267) is adapted to sandwich the hook main body (210) or the latch (230) in the right-left direction. [4] The fastening device according to claim 3, wherein the restricting portion (260) is engageable with the hook main body (210) or the latch (230) to restrict the displacement of the latch (230) in a direction away from the hook main body (210). [5] Fastening device according to claim 3 or 4, wherein the restriction region (260) arranged on the hook main body (210) has at least one first projection (263, 264), the latch (230) has at least one second projection (253, 254), the second projection (253, 254) is shaped to protrude in the right-left direction and the first lug (263, 264) extends in a direction other than the right-left direction to be engageable with the second lug (253, 254). [6] Fastening device according to claim 3 or 4, wherein- the restriction region (260) arranged on the snap lock (230) has at least one first projection (263, 264), the hook main body (210) has at least one second projection (253, 254), and the first projection (263, 264) and the second projection (253, 254) which are to be engaged with each other protrude opposite to each other in the right-left direction. [7] The fastening device (10) according to any one of claims 3 to 6, wherein the restriction portion (260) comprises a left restriction wall (261) and a right restriction wall (262) arranged in the right-left direction so as to sandwich the hook main body (210) or the latch (230), the fastening device (10) further comprising: a first projection (263, 264) arranged on at least one of the left-hand restricting wall (261) and the right-hand restricting wall (262); and a second projection (253, 254) engageable with the first projection (263, 264), wherein the interlocking of the first lug (263, 264) and the second lug (253, 254) limits the displacement of the latch (230) away from the hook main body (210). [8] Fastening device (10) according to one of claims 3 to 7, wherein the restriction portion (260) has a left restriction wall (261) and a right restriction wall (262) arranged in the right-left direction so as to sandwich the hook main body (210) or the latch (230), wherein the latch main body (250) has a distal latch end (231) engaging the distal hook end (211) of the hook main body (210), and a thickness of the latch distal end (231) in the right-left direction is greater than a thickness of a portion of the latch main body (250) sandwiched by the left restriction wall (261) and the right restriction wall (262) in the right-left direction. [9] Fastening device according to one of claims 1 to 8, wherein the coupled portion (270) is provided with a recess and a base end of the spring portion (240) is coupled to a surface of the recess. [10] Fastening device according to claim 9, wherein a notch (R28) is arranged to extend at least through the coupled region (270) from the surface of the recess to the hook main body (210), and the notch (R28) can partially accommodate the latch (230). [11] Fastening device according to one of claims 1 to 10, wherein the hook part (200) further comprises a support (280) between the coupled region (270) and the hook main body (210), wherein the holding part (100) can sit on the support (280) and wherein the connection point of the snap lock (230) and the coupled portion (270) is further away from the hook main body (210) along the rotation axis than the support (280). [12] Fastening device according to one of claims 1 to 11, wherein the hook part (200) further comprises a support (280) on which the holding part (100) can sit, and the snap lock (230) is shaped such that, together with the support (280), it provides a support surface for the holding part (100). [13] Hook part (200) which can be fastened to a support part (100) so as to be rotatable about an axis of rotation, the hook part (200) comprising: a hook main body (210); a latch (230) for closing the hook main body (210); and a coupled portion (270) to which a base end of the latch (230) is integrally coupled, wherein the coupled portion (270) extends from a connection point with the hook main body (210) in a direction along the rotation axis away from the hook main body (210) such that the coupling between the support part (100) and the hook part (200) is ensured, wherein the latch (230) has: a spring portion (240) arranged closer to the base end of the latch (230), the spring portion (240) being elastically configured to enable the latch (230) to be urged away from the hook main body (210); and a latch main body (250) coupled to the coupled portion (270) via the spring portion (240), and wherein the connection point of the latch (230) and the coupled portion (270) is further away from the hook main body (210) along the rotation axis than the connection point of the hook main body (210) and the coupled portion (270).

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