Shape-adaptive member

Abstract

To provide a shape adaptive member that can maintains a high fit even if the shape and size of an adherend changes and suppress a fallout and deviation of a wearer.SOLUTION: A member includes a core material 11 for determining the shape in cooperation with an elastic member 12 fitted to a hollow hole 12a of the elastic member 12, the core member 11 is formed in a curved shape in advance along the shape of the wearer as a reference in cooperation with the elastic member 12 as the elastic member 12 is in contact with a certain length with respect to the wearer, an elastic force acting on the elastic member 12 has an elastic force acting in the opposite direction, and a plurality of elastic deformation portions 111, 112, 113 elastically deformed are provided so as to maintain a contact state of a constant length to the wearer in cooperation with the elastic member 12.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a member that can fit a mounting portion of a wearable such as glasses, accessories, etc. to a wearer such as the head of a glasses wearer, the arm, neck, etc. of a person wearing accessories, or the body of an animal, a device, or other articles. In particular, the present invention relates to a shape-adaptive member that can maintain a fitting state by deforming following a change even when the shape and size of the wearer change.

Background Art

[0002] As an example of a member that requires the shape of the mounting portion of the wearable to adapt to the shape and size of the wearer when mounting the wearable on the wearer, a temple of a glasses frame can be cited. The temple suppresses the dropping and slipping off of the glasses frame (wearable) by fitting to the temporal region (wearer) of the glasses wearer. However, since glasses frames are generally mass-produced according to unified standards, when the shape and size of the head of the glasses wearer change, there is a problem that the temple and the modern do not fit properly on the head of the glasses wearer. In order to solve such a problem, fine adjustment of the glasses frame to the glasses wearer is performed at glasses stores.

[0003] Also well-known are spring hinge glasses that attempt to prevent dropping and displacement by providing spring properties to the hinge portion at the base of the temple and pressing the temple against the temporal region by the spring force of the hinge portion. FIG. 5 is a diagram for explaining the operation of a glasses frame having spring properties in the hinge portion. Temples T are foldably attached to both left and right ends of a front frame F that holds lenses by hinges C. Springs are incorporated in the hinges C, and spring forces are applied to the left and right temples T, T so as to sandwich the head H of the glasses wearer.

[0004] In a spectacle frame equipped with a spring hinge C of this type, when a wearer with a head H2 having a head width L2 (L1 < L2) wears a spectacle frame in which the shape of the temple T and the width between the left and right temples T, T are adjusted to fit the head H1 with a head width L1, the width between the left and right temples T, T expands according to the head width L2, and clamps the wearer's head H2 from both left and right sides.

[0005] However, since the left and right temples T, T only linearly expand with the spring hinge C as the fulcrum when the head width changes from L1 to L2, as shown by the phantom line in FIG. 5, there is a problem that the contact length between the head H2 and the expanded temple T decreases and the fitting feeling deteriorates. In addition, when the width between the left and right temples T, T expands to L2 according to the head H2, the clamping force of the spring of the hinge C also increases accordingly, causing inconveniences such as giving a sense of discomfort to the spectacle wearer.

[0006] In order to solve such problems, for example, like the spectacle frame described in Patent Document 1, an elastic portion (the portion indicated by reference numeral 45 in Patent Document 1) is provided on the temple, and the temple (elastic temple) elastically deforms at the elastic portion according to the width of the wearer's head, so that a spectacle frame that improves the fitting feeling while suppressing the sense of discomfort even for spectacle wearers with different head widths is also known.

[0007] In a spectacle frame equipped with such an elastic temple, when the head width of the wearer changes from L1 to L2 as in the case shown in FIG. 5, the elastic portion elastically deforms according to the stress acting on the portion. The form of the deformation is not a linear one like the spring hinge C having spring properties in FIG. 5, but an arcuate one curved inward. Therefore, even when the size and shape of the head change, there is an advantage that a relatively long contact length can be maintained between the spectacle wearer's heads H1, H2. In addition, if the rear end portion of the elastic temple is pre-curved greatly along the heads H1, H2 of the spectacle wearer, there is an advantage that the contact length can be further extended.

[0008] However, even in this type of spectacle frame, there is still a problem that the contact state of the portion contacting the temporal region is insufficiently maintained, and it partially becomes a point contact state, causing discomfort to the spectacle wearer. Further, in this type of spectacle frame, since the elastic portion (the portion indicated by reference numeral 45 in Patent Document 1) is exposed, it is necessary to design the shape of the elastic portion while considering the design of the spectacle frame, and there is also a problem that it is difficult to design an elastic portion having sufficient fitness. Therefore, in such an elastic template, there has also been proposed a spectacle frame that attempts to compensate for suppression of dropping and displacement with a hinge having spring properties while suppressing the pressing force of the portion contacting the temporal region as a whole.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0010] The present invention has been made in view of the problems of the above-described conventional technologies, and an object thereof is to provide a shape-adaptive member that can maintain high fitness by maintaining a good contact state even when the shape, size, etc. of the object to be worn change, and can effectively suppress dropping and displacement of the worn object.

Means for Solving the Problems

[0011] As described above, if elasticity is imparted to the temple using a material such as β-titanium as in the spectacle frame described in Patent Document 1, even if the shape and size of the head of the spectacle wearer change somewhat, the change in the contact length between the temple (elastic temple) and the temporal region of the spectacle wearer can be suppressed to some extent, and fitness can be maintained. However, as described above, there is still a problem that the fitness of such a conventional elastic temple is insufficient. As a result of the inventors of the present invention's intensive studies, it was concluded that the reasons for the insufficient fitness in the above-described conventional elastic temples are that the part responsible for elasticity is only the front half of the elastic temple, and the part responsible for elasticity is exposed and subject to design constraints. Therefore, the inventors conceived the present invention, believing that if the elasticity can be controlled over the entire length of the temple and the core material is covered with other members so that the core material is not conspicuous in appearance and is not subject to design constraints, even if the shape and size of the wearer's head change slightly, a temple for an eyeglass frame can be obtained that can maintain a contact length of a certain level or more, does not give the wearer a sense of discomfort, and can effectively suppress dropping and displacement.

[0012] Furthermore, the inventors of the present invention focused on an elastic member such as a coil spring in achieving the object of the present invention. An elastic member such as a coil spring has a restoring force that always acts to return to its original shape. And, although it is difficult for an elastic member such as a coil spring to maintain an arbitrary shape by itself, when combined with a core material, it has the advantages that not only can its shape be made into an arbitrary shape, but also it is easy to maintain that shape. From such advantages of a coil spring, the inventors of the present invention conceived the present invention by combining it with a core material having elasticity.

[0013] Specifically, as described in claim 1, the present invention is a shape-adaptive member used for the temple of glasses, which ensures that when changing from a reference glasses wearer to another glasses wearer with a different head size and shape, the contact state of a certain length of the temple with respect to the head does not change. The shape-adaptive member includes an elastic member formed in a hollow shape and a core material inserted into the hollow hole of the elastic member, which cooperates with the elastic member to determine the shape of the elastic member. The core material is inserted into at least the portion of the elastic member that contacts the head. Due to the bending force acting when worn by the glasses wearer, an elastically deformable portion that elastically deforms in a curved shape and a non-deformable portion that does not deform are alternately arranged in the axial direction of the elastic member. Also, in order for the elastic member to contact the head of the reference glasses wearer at a certain length and for the pressing force distribution at the contact portion to be uniform, a part or all of it is formed in a curved shape in advance and a plurality of the core materials are inserted in the axial direction of the hollow hole of the elastic member, or the plurality of the core materials are arranged and inserted in the radial direction of the hollow hole It has such a configuration.

[0014] According to this configuration, for an elastic member such as a coil spring having an elastic force in a direction trying to return to a linear shape, for the core material, a material having an elastic force in a direction trying to conform to the shape of the object to be worn, such as the head of the glasses wearer, is used. Then, the core material is plastically deformed in advance to match the reference shape of the reference object to be worn, and the elastic member and the core material are made to match the reference shape in cooperation with the elastic force of the elastic member having an elastic force in the reverse direction. In this way, in the object to be worn with the reference shape, the elastic member and the object to be worn are made to contact at a certain length, and by providing one or more elastically deformable portions with different elastic deformation amounts when a certain bending force is applied to the core material, it is possible to maintain the contact state of the certain length even when the elastic member is worn on another object to be worn with different shapes and sizes. The form and arrangement of the elastically deformable portions vary depending on the type, shape, or degree of change in size of the object to be worn, but can be obtained through experiments and empirical rules. Since the core material of the shape-adaptive member of the present invention is covered by the elastic member, the shape of the core material does not appear on the appearance. Therefore, the shape of the core material can be freely selected There are advantages

[0015] Claim 2As described in [reference], as the elastic member, for example, a winding wire obtained by winding a metal wire in a coil shape, a twisted wire obtained by twisting a plurality of metal wires, or a braided wire obtained by braiding a plurality of metal wires can be used. Alternatively, a combination of two or more of these may be used. As such an example, for example, a structure in which the twisted wire or the braided wire is covered on the outside of the winding wire can be mentioned. The arrangement of the elastic deformation portions in one core material may include an arrangement in which portions that are easily elastically deformed and portions that are difficult to elastically deform are alternately arranged. In addition to this, claim 3 As described in [reference], in one elastic deformation portion, by changing at least one of the cross-sectional diameter, cross-sectional shape, material, and hardness in the length direction, when a certain bending force is applied to the core material, the elastic deformation amount may be made non-uniform in the length direction.

[0016] In the present invention, the elasticity of the shape-adaptive member is determined by the cooperation of the elastic force of the elastic member and the elastic force of the core material. Therefore, as described in claim 4 at least one of the elastic member and the core material can be made replaceable, and it is also possible to obtain an optimal combination by variously changing the combination of the elastic member and the core material. For example, when the shape-adaptive member of the present invention is applied to the temple of an eyeglass frame, and it is desired to adjust the pressing force by the temple to be stronger or weaker during normal use and during exercise, one or both of the elastic member and the core material may be replaced.

Advantages of the Invention

[0017] According to the present invention, even if the shape and size of the object to be worn, such as the head of an eyeglass wearer, change with respect to the reference shape and reference size, the wearing body contacts the object to be worn at a constant length in response to this change, and it becomes possible to provide a shape-adaptive member that fits moderately. When the present invention is applied to, for example, the temple of an eyeglass frame, due to the cooperation of the core material and the elastic member, the temple can always be brought into contact with the head of the eyeglass wearer at an optimal contact length, and it becomes possible to provide an eyeglass frame that is difficult to shift and difficult to fall off.

[0018] Furthermore, for example, in an eyeglass store, by preparing several types of temple eyeglass frames that match the reference head shape and size, or by appropriately combining multiple types of elastic members and core materials, the number of times the shape of the temple needs to be finely adjusted according to each individual eyeglass wearer can be reduced, and the burden on the eyeglass store can be significantly alleviated. The shape-adaptive member of the present invention is applicable not only to eyeglass frames but also to bracelets, other accessories worn on the body, or other wearable items.

Best Mode for Carrying Out the Invention

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1(a) is a diagram showing an embodiment of the shape-adaptive member of the present invention, (b) is a diagram showing an example of the core material used in the shape-adaptive member of (a), and (c)(i)(ii)(iii) are diagrams showing an example of the cross-sectional shape in the I-I direction of (a), and (d)(i)(ii)(iii) are diagrams showing an example of the cross-sectional shape of the elastic deformation part in the II-II direction of (b). In the following description, the shape-adaptive member is described as being used for the temple of an eyeglass frame as the wearing body, and when the eyeglass frame is worn on the head of an eyeglass wearer as the body to be worn, the shape of the temple elastically deforms so as to adapt to the head of the eyeglass wearer.

[0020] In the example of FIG. 1, the shape-adaptive member 1 has a winding 12 as an elastic member and a linear core material 11 inserted into the hollow hole 12a of the winding 12. The diameter of the hollow hole 12a is not particularly limited as long as the core material 11 can be inserted, but it is preferably substantially the same as the maximum outer diameter of the core material 11. The winding 12 is in the shape of a coil spring formed by tightly winding a metal wire in a coil shape, and has a shape along a straight axis Z (the shape in Fig. 1(a)) as its basic shape. As the metal wire, in addition to metals having elasticity such as stainless steel, spring steel, Ti or Ti alloy, NT alloy, and beryllium copper, resin materials such as superelastic resin can also be used. When a bending force is applied to the winding 12 in a direction crossing the axis Z to bend it, an elastic force that tries to return to the basic shape is generated in the winding 12. The magnitude of the elastic force in the return direction generated in the winding 12 can be adjusted according to the material and wire diameter of the metal wire, etc. The cross-sectional shape of the winding 12 is not limited to a circular shape as shown in Fig. 1(c)(i), and may be, for example, an elliptical shape as shown in (c)(ii) or a rectangular shape as shown in (c)(iii).

[0021] The core material 11 can be formed of a resin material such as superelastic resin, in addition to metals having elasticity such as stainless steel, spring steel, Ti or Ti alloy, NT alloy, and beryllium copper, similar to the winding 12. The core material 11 cooperates with the winding 12 to maintain a contact state of the temple over a certain length with respect to the head due to the bending force generated when the glasses frame is worn on the head of the glasses wearer, and generates an elastic force in the temple to sandwich the head from the left and right. Here, the "certain length" when the shape-adaptive member of the present invention is applied to the glasses frame refers to the length that the temple contacts from the temple part to the back of the head of the glasses wearer.

[0022] In order to maintain the contact state of the fixed length even when the size and shape of the head change, as shown in Fig. 1(b), the core material 11 of this embodiment is elastically deformed in a curved shape by the bending force generated when the spectacle frame is worn on the head of the spectacle wearer, with elastic deformation portions 111, 112, 113... of lengths S1, S2, S3... and non-deformed portions 114, 115, 116... of lengths H1, H2, H3... that hardly deform due to the bending force being alternately arranged. In this embodiment, the diameter of the elastic deformation portions 111, 112, 113... is made smaller than the diameter of the non-deformed portions 114, 115, 116..., and by appropriately selecting the dimensions of the lengths S1, S2, S3... and the lengths H1, H2, H3..., the deformation form of the core material 11 is adjusted so that the contact state of the fixed length can be maintained.

[0023] In order to adjust the deformation form of the core material 11 and maintain the contact state of the fixed length, not only the cross-sectional diameter of the elastic deformation portions 111, 112, 113... as described above, but also the cross-sectional shape is possible. Fig. 1(d) shows an example of the cross-sectional shape of the II-II portion. The elliptical or rectangular cross-sectional shape as in (ii) and (iii) makes the core material 11 more difficult to bend, that is, the elasticity can be increased, compared to the circular cross-sectional shape as in (i). Also, by appropriately selecting the cross-sectional shape, there is an advantage that the bending direction can be regulated.

[0024] That is, the elastic deformation portions 111, 112, 113... having a circular cross-sectional shape as shown in Fig. 1(d)(i) can be elastically deformed in all directions. On the other hand, if the cross-section of the elastic deformation portions 111, 112, 113... is made elliptical as shown in Fig. 1(d)(ii), the elastic deformation of the elastic deformation portions 111, 112, 113... is restricted in some directions (the vertical direction in the illustrated example), and if it is made rectangular as in Fig. 1(d)(iii), the direction of elastic deformation is almost limited to one direction (the left-right direction in the illustrated example). In this way, by combining the diameter, length, cross-sectional shape of the elastic deformation parts 111, 112, 113 ···, and the material of the metal forming the elastic deformation parts 111, 112, 113 ···, etc., it is possible to freely adjust the degree and direction of elastic deformation of the elastic deformation parts 111, 112, 113 ···.

[0025] Of course, in each of the elastic deformation parts 111, 112, 113 ···, the cross-sectional diameter and cross-sectional shape may be constant over the entire lengths S1, S2, S3 ···, or the cross-sectional diameter and cross-sectional shape may be changed at intermediate parts of the lengths S1, S2, S3 ···. The material of each of the elastic deformation parts 111, 112, 113 ··· may be changed, or the elasticity may be changed by annealing or the like. The elastic deformation parts 111, 112, 113 ··· as described above can be formed by swaging, pressing, or cutting an intermediate part of the core material 11.

[0026] By inserting the core material 11 with the above configuration into the hollow hole 12a of the winding 12 as an elastic member and fixing both ends of the winding 12 to the core material 11, the shape-adaptive member 1 is formed. Prior to inserting the core material 11 into the hollow hole 12a of the winding 12, the core material 11 is plastically deformed in accordance with a preset shape, for example, the shape of the head of a reference glasses wearer. Since the winding 12 is in the shape of a coil spring, by inserting the plastically deformed core material 11 into the hollow hole 12a of the winding 12, the winding 12 takes a shape following the shape of the core material 11. Note that the shape of the shape-adaptive member 1 is determined by the cooperation between the elastic force with which the winding 12 attempts to restore to a straight shape and the elastic force of the core material 11 that attempts to restore to a preset shape. Therefore, for the shape of the core material 11 after plastic deformation, a shape is selected such that the shape-adaptive member 1 composed of the core material 11 and the winding 12 contacts the head of the reference glasses wearer over the entire length of the contact part.

[0027] The winding 12 can be fixed to the temple of the spectacle frame by means of brazing, welding, adhesion, etc. It can be made detachable from the temple by means of a screw such as a bolt or a nut, or the core material 11 can be fixed to the temple and made insertable and removable with respect to this core material 11, so that it is possible to replace the winding 12 with different elasticity and shape. Also, the core material 11 may be inserted into the winding 12 and fixed at both ends thereof, or the core material 11 may be fixed to the temple. Examples of the fixing method include brazing, welding, adhesion, a screw such as a bolt or a nut, or a stopper. By using a screw such as a bolt or a nut or a stopper, etc., the core material 11 can be made replaceable with respect to the winding 12. In this way, by making either one or both of the winding 12 and the core material 11 replaceable, for example, it is possible to switch the magnitude of the pressing force on the head of the spectacle wearer according to the difference in use such as for sports and daily use, replace the winding 12 with different designs, colors, patterns, etc., or replace the winding 12 with another elastic member such as a twisted wire or a braided wire.

[0028] Furthermore, another winding 12 may be externally fitted in one or more layers around the winding 12, or another elastic member such as a twisted wire or a braided wire may be externally fitted. Also, a decorative material or a covering material that can be deformed integrally with the shape adaptability member 1 may be provided. For example, a heat shrinkable pipe may be fitted around the winding 12 and heat shrunk.

[0029] Incidentally, when a spectacle frame in which the shape adaptability member 1 of this embodiment is applied to the temple portion is worn on the head of another spectacle wearer with different size and shape from the head of the reference spectacle wearer, in order to maintain a constant contact length between the head and the temple for any spectacle wearer, it is necessary to appropriately select the form of elastic deformation of the core material 11. The form of the elastic deformation of the core material 11 can be obtained through experiments and experience. For example, a plurality of pressing force measurement points are provided at the contact portion between the temple and the head. From the change in the pressing force at each pressing force measurement point before and after the shape and size of the head change, the form of the elastic deformation of the core material 11, that is, the shape of the core material 11 (the position, length, cross-sectional shape, cross-sectional diameter, etc. of the elastic deformation portions 111, 112, 113) can be determined. Figure 2 is a diagram showing an embodiment in which the shape adaptable member 1 of the present invention is applied to the temple of a spectacle frame, and is a plan view of the spectacle frame showing the state when the temple elastically deforms in response to changes in the size and shape of the head of the spectacle wearer. A plurality (five in the illustrated example) of pressing force measurement points A to E are provided at equal intervals between one end and the other end of the contact portion of the temple T. Figure 3(a) is a graph showing the distribution of the pressing forces at the pressing force measurement points A to E on the temple T of the spectacle frame in Figure 2, and (b) is based on the graph in (a) Equal a schematic diagram showing an example of the shape of the core material for making the distribution of the pressing forces at the pressing force measurement points A to E.

[0030] The shape of the core material 11 is determined in advance and plastically deformed so that the pressing force at each part of the pressing force measurement points A to E at the contact portion where the temple T contacts the head H1 (width L1) of the reference spectacle wearer becomes a substantially uniform reference value. If the pressing force at each part of the pressing force measurement points A to E is substantially uniform, it can be said that the temple T is in contact with the head H1 of the spectacle wearer over the entire length of the contact length Z1 at the contact portion. Next, the spectacle frame is worn on the head H2 (width L2) of another spectacle wearer, and the change in the pressing force at each part of the pressing force measurement points A to E is measured. The graph in Figure 3(a) is a graph of the change amount of the pressing force at each part of the pressing force measurement points A to E with respect to the reference value. That is, it is assumed that the pressing forces at the pressing force measurement points A, C, and E become stronger by P1, P2, and P3 respectively, the pressing force at the pressing force measurement point B is approximately the reference value, and the pressing force at the pressing force measurement point D becomes weaker by P4.

[0031] Therefore, at the pressing force measurement points A, C, and E, the diameter of the core material is reduced before and after these points so that the pressing force becomes smaller. Also, at the pressing force measurement point D, it can be estimated that the temple floats (is not in contact) from the head H2 due to bending. Therefore, by reducing the diameter of the core material at the pressing force measurement point D, it becomes easier to cause elastic deformation and ensure contact with the head H2 even at the pressing force measurement point D. Fig. 3(b) schematically shows the shape of the core material 11 formed based on the results of these considerations. After selecting a shape as shown in Fig. 3(b), the spectacle frame should be attached to the reference head H1 again, and the shape of the core material 11 should be adjusted so that the pressing forces at each part of the pressing force measurement points A to E become substantially equal. By repeating the above procedure, even when the width of the head changes from L1 to L2, the contact lengths Z1 and Z2 between the temple T and the heads H1 and H2 can be made to hardly change.

[0032] Thus, in the present invention, for example, in the temple T of a spectacle frame, even when the shape and size of the head change to a size and shape different from the reference, the contact length between the temple T and the heads H1 and H2 can be kept constant. Therefore, it is possible to obtain a higher fit than that of the elastic temple described in Patent Document 1. Also, a linear member can be used as the core material 11, and since this core material 11 is inserted into the hollow hole 12a of the winding wire (elastic member) 12, the core material 11 does not appear on the exterior of the spectacle frame, and it becomes possible to obtain a higher fit by freely selecting the form of the core material 11. Therefore, in a spectacle store or the like, it is sufficient to prepare a plurality of types of spectacle frames equipped with temples T having reference shapes and sizes, reducing the fine adjustment work according to the spectacle wearers in a spectacle store or the like and lightening the burden on the spectacle store or the like.

[0033] Figure 4 is a cross-sectional view showing another embodiment of the shape-adaptive member of the present invention. In Figure 4, the core material 11 is hatched to make the presence of the space S easily understandable. In this embodiment, the case where the shape-adaptive member 1 is applied to the temple M of the glasses is taken as an example. The temple M of this embodiment has a straight portion 12b of length X in the middle part. Since the coil-shaped winding 12 has an elastic force in the direction of returning to the straight state, in this embodiment, a space S without the core material 11 is provided in the straight portion 12b by utilizing this elastic force. Such a space S can be formed by dividing the core material 11 on the front side and the rear side of the temple M, or by inserting a plurality (two in the illustrated example) of core materials 11 separated at the portion of the space S into the temple M.

[0034] Although the preferred embodiments of the present invention have been described, the present invention is not limited to the above description. For example, in the above description, a winding formed by winding a metal wire in a coil shape has been described as an example of the elastic member, but a twisted wire formed by twisting a plurality of metal wires or a braided wire formed by braiding a plurality of metal wires may be used as the elastic member. Further, an elastic member may be constituted by combining two or more of these. Also, in the above description, the shape-adaptive member of the present invention has been described as being applied to the temple of the glasses frame, but it can also be applied to other parts such as the bridge, the temple, the modern, and the rim. Further, it is applicable not only to the glasses frame but also to accessories such as bracelets. Furthermore, the object to be worn is not limited to the human body, and it can also be applied to objects to be worn such as the bodies of animals such as dogs and cats, devices, and other articles that are required to fit the wearing body following the change even if they vary slightly from the reference shape and size. Furthermore, in the other embodiment in Figure 4, the space S is formed only in the straight portion 12b which is the shape (straight in the case of the coil-shaped winding 12) to which the elastic member tries to return. However, the space S is not limited to such a straight portion 12b, and may be appropriately formed at a portion where the elastic force of the elastic member such as the winding 12 is to be directly utilized.

Brief Description of the Drawings

[0035]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Explanation of Reference Numerals

[0036] 1 Shape-adaptive member 11 Core material 111, 112, 113 Elastic deformation parts 114, 115, 116 Non-deformation parts 12 Coil (elastic member) 12a Hollow hole 12b Straight part C Hinge F Front frame S Space T Temple H1, H2 Head L1, L2 Width of the head Z1, Z2 Contact length X Length of the space S

Claims

1. A shape - adaptable member used for the temple of glasses, which ensures that when changing from a reference glasses - wearer to another glasses - wearer with different head sizes and shapes, the contact state of a certain length of the temple with respect to the head does not change. The shape - adaptable member comprises: An elastic member formed in a hollow shape; A core material inserted into the hollow hole of the elastic member, which cooperates with the elastic member to determine the shape of the elastic member. The core material: Is inserted into at least the portion of the elastic member that contacts the head. When worn by the glasses - wearer, due to the bending force acting, an elastically - deformable portion that elastically deforms in a curved shape and a non - deformable portion that does not deform are alternately arranged in the axial direction of the elastic member. Also, in order for the elastic member to contact the head of the reference glasses - wearer with a certain length and for the pressing force distribution at the contacting portion to be uniform, a part or all of it is pre - formed in a curved shape. A plurality of the core materials are inserted in the axial direction of the hollow hole of the elastic member, or a plurality of the core materials are arranged and inserted in the radial direction of the hollow hole. A shape - adaptable member, characterized by the above.

2. The shape - adaptable member according to Claim 1, wherein the elastic member is a wound wire formed by winding a metal wire in a coil shape, a twisted wire formed by twisting a plurality of metal wires, a braided wire formed by braiding a plurality of metal wires, or a combination of two or more of these.

3. In one of the elastically - deformable portions, by changing at least one of the cross - sectional diameter, cross - sectional shape, material, and hardness in the length direction, the amount of elastic deformation when a certain bending force is applied to the core material is made non - uniform in the length direction. The shape - adaptable member according to Claim 1 or 2, characterized by the above.

4. The shape - adaptable member according to any one of Claims 1 to 3, characterized in that at least one of the elastic member and the core material is replaceable. ​

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