JP2014052396A - Temple connection structure of spectacle frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temple connection structure of a spectacle frame, which is free of backlash or the like.SOLUTION: A pair of elastic arms 23 and 23 elastically deformable in a vertical direction are formed at a front end part of a temple 20, and hinge pins 25 and 25 projecting outward in the vertical direction are provided at respective front ends of both of elastic arms 23 and 23. Both of elastic arms 23 and 23 are elastically deformed toward each other and, in this posture, are fitted to void parts 5 of a columnar bearing 4 provided in a connection part of a wraparound endpiece 3, and both of elastic arms 23 and 23 are brought into contact with and retained on support surfaces 11 adjacent to cam projections 12 and 13 of the columnar bearing 4 by elastic resilience when the hinge pins 25 and 25 are freely turnably engaged with a pair of shaft holes 8 and 8, whereby the temple 20 is attached to the wraparound endpiece 3. The temple connection structure is configured so as to give a click feeling each time when front end parts of the elastic arms 23 and 23 are elastically deformed to get over the cam projections 12 and 13 and are brought into press contact with and retained on the adjacent support surfaces 11 by turning the temple 20 from a folding position to an opening position.

Description

  The present invention relates to a temple connecting structure for a spectacle frame in which a temple is rotatably attached to a connecting portion of an armor provided on both sides of a front portion of the spectacle frame without using a screw hinge.

  Conventionally, various types of temple coupling structures that do not use a screw hinge have been proposed (see, for example, Patent Documents 1 to 4).

  The temple connection structure described in Patent Document 1 (Japanese Patent Laid-Open No. 2011-27828) has a problem that it has a large number of parts, requires time for assembly work, and is expensive to manufacture.

  The temple connecting structure described in Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-122919) is a protrusion that is rotatably prevented by a ring provided at a connecting portion of the armor and supports the temple rotatably. The body structure is complex and the number of parts is large.

  The temple connecting structure described in Patent Document 3 (Japanese Patent Laid-Open No. 11-1943060) also has the same problem as that of Patent Document 2.

  Furthermore, in the temple connection structure described in Patent Document 4 (Japanese Patent Laid-Open No. 9-325303), a spring pin is provided on one side of the connection part, and a ring that presses and holds the spring pin rotatably is provided on the other side. The temples cannot be easily replaced.

  The present invention has been made in view of the above-described conventional problems, has a small number of parts, can be easily attached to a temple, can be easily removed, and has a backlash and a flutter. An object of the present invention is to provide a temple connecting structure for a spectacle frame without attachment.

  In order to solve the above problems, the present invention employs the following technical means.

  The invention according to claim 1 is an eyeglass frame temple connecting structure in which a temple is rotatably attached to a connecting portion of an eyelid provided on both sides of a front portion of the eyeglass frame without using a screw hinge. A cylindrical bearing is provided, and the cylindrical bearing is formed with a cavity portion in which an intermediate side portion of the cylindrical main body is cut out to fit the distal end portion of the temple, and the cavity portion is sandwiched therebetween. A pair of upper and lower support portions are formed, and the pair of support portions are provided with a pair of shaft holes penetrating in the axial direction, respectively, and the rotation range of the temple around the shaft hole And a plurality of cams opposed to each other at a predetermined interval in the circumferential direction with the shaft hole as a center on the support surfaces opposite to each other above and below the pair of support portions. The protrusion is protruding The temple is provided with a pair of elastic arms which are provided with a notch extending in the axial direction from the tip, and can be elastically deformed in the vertical direction, and hinge pins projecting outward in the vertical direction at the tips of the pair of elastic arms, respectively. The pair of elastic arms are fitted into the cavity in a posture that is elastically deformed by pressing the tip portions of the pair of elastic arms so as to approach each other, and the hinge pins of the pair of elastic arms are connected to the pair of shaft holes. Are engaged with the support surfaces of the pair of support portions by the elastic restoring force of the pair of elastic arms at a position adjacent to the cam projection. When the temple is rotated and moved from the folded position to the open position with respect to the front portion, the distal end portions of the pair of elastic arms are elastically deformed to cause the cap. Over the protrusion, characterized by being configured to click feeling every time be locked pressed against and engaged with the said support surface adjacent obtained.

  The invention according to claim 2 is characterized in that the pair of elastic arms of the temple are formed in a tapered shape that gradually increases in width toward the tip, and a thin shaft portion that fits into the space portion projects from the tip portion. The hinge pin is provided at the tip of the shaft portion.

  According to a third aspect of the present invention, the cylindrical bearing is provided with an inclined guide groove for guiding the tip end portions of the pair of elastic arms on the support surface adjacent to the side wall defining the folding position of the temple. It is characterized by being.

  The invention according to claim 4 is characterized in that the cylindrical bearing is constituted by a single part.

  The temple connecting structure of the present invention configured as described above is the pair of elastic arms that are elastically deformable in the vertical direction provided in the temple in the space portion of the cylindrical bearing provided in the connecting portion of the armor. The temples can be pivotally attached to the connecting portion of the armor and can be easily removed and replaced by simply fitting them in a posture that is elastically deformed by pressing their tip portions close to each other. . Therefore, there is an advantage that the design of the temple can be diversified.

  Moreover, the tip portions of the pair of elastic arms of the temple assembled to the columnar bearing are pressed and locked to the support surfaces of the pair of support portions of the columnar bearing by its elastic restoring force. When the temples are rotated from the folded position to the open position, the tip portions of the pair of elastic arms are elastically deformed to get over the cam projections and to be pushed and locked to the adjacent support surfaces. A click feeling that makes a sound is obtained, the temple opening and closing operation can be performed smoothly and reliably, and the temple does not rattle or flutter.

  In addition, the cylindrical bearing can be manufactured as a single part, and the pair of elastic arms can be integrally formed with the temple. Yes.

It is a principal part side view of the spectacles frame to which the temple connection structure by this invention is applied. It is a principal part top view of a spectacles frame same as the above. It is explanatory drawing of the temple opening / closing operation | movement of a spectacles frame same as the above, (a) shows a temple folding position, (b) shows the temple opening / closing operation middle position, (c) shows the temple opening position. It is a perspective view of the cylindrical bearing provided in the connection part of the alloy which comprises the principal part of the temple connection structure which concerns on this invention. It is a front view of a cylindrical bearing same as the above. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. It is a top view of the temple principal part of the temple connection structure which concerns on this invention. It is a side view of a temple main part same as the above. It is a perspective view of a pair of elastic arms which comprise the principal part of a temple same as the above. It is explanatory drawing of the operation | work process of assembling | attaching a pair of said elastic arm to the said cylindrical bearing. It is explanatory drawing which shows the state which assembled | attached the said pair of elastic arm to the said cylindrical bearing same as the above.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG.1 and FIG.2 has shown the principal part of the spectacles frame 1 provided with the temple connection structure which concerns on this invention. The spectacle frame 1 has a pair of bifurcated shapes provided at a connecting portion of a temple 20 on a cylindrical bearing 4 provided at a connecting portion of an armor 3 (only one of them is shown) provided on both sides of a front portion 2. The elastic arms 23 and 23 are fitted and rotatably attached. The specific configuration of the columnar bearing 4 and the pair of elastic arms 23, 23 will be described later. The temple 20 attached to the columnar bearing 4 so as to be freely rotatable is in a folded position during the opening / closing operation shown in FIG. In (a), the intermediate position (b), and the open position (wearing position) (c), a click feeling that makes a click and a click sound is obtained, and can be opened and closed smoothly and reliably.

  4 to 6 show the cylindrical bearing 4. The cylindrical bearing 4 is manufactured and processed as a single part from a metal material or a plastic material, and a space portion into which the pair of elastic arms 23 and 23 of the temple 20 are fitted by cutting out an intermediate portion of the cylindrical body 5. 6 is formed, and a pair of support portions 7 and 7 that are vertically opposed to each other with the void portion 6 interposed therebetween are formed. The pair of support portions 7, 7 are provided with a pair of shaft holes 8, 8 penetrating in the axial direction of the columnar body 5, respectively, and two side walls 9, 10 that define the rotation range of the temple 20. Is provided. The narrow angle around the shaft hole 8 of the two side walls 9 and 10 is designed to be about 90 degrees. Further, two cam projections 12 which are arranged at predetermined intervals in the circumferential direction around the shaft hole 8 and are opposed to each other on the support surfaces 11, 11 opposed to the upper and lower sides of the pair of support portions 7, 7. , 13 are projected. The cam protrusions 12 and 13 have a mountain shape in cross section, and are arranged at a phase angle of about 30 degrees between the two side walls 9 and 10 with the shaft hole 8 as the center, and the folding position of the temple 20 shown in FIG. (A), an intermediate position (b) and an open position (c) are defined. An inclined guide groove 14 is formed on the support surface 11 adjacent to the side wall 9 defining the folding position (a) of the temple 20 and the cam projection 12 for guiding and guiding the tip portions of a pair of elastic arms 23 and 23 to be described later. Has been. The cylindrical bearing 4 having such a configuration is fixed to the connecting portion of the armor 3 by welding or brazing.

  7 to 9 show the main part of the temple 20. The temple 20 is manufactured by processing a spring metal material, and a pair of elastic arms that are elastically deformable in the vertical direction by providing a notch 22 extending in the axial direction from the tip at the tip connecting portion of the temple body 21. 23, 23 are formed. The pair of elastic arms 23, 23 are formed in a tapered shape with a gradually wider width from the temple body 21 toward the tip, and the hollow portion 6 of the cylindrical bearing 4 is formed at the tip. The thin shaft portions 24 and 24 to be fitted are projected, and hinge pins 25 and 25 projecting outward in the vertical direction are provided at the tips of the shaft portions 24 and 24, respectively. Each shaft portion 24 and the hinge pin 25 have a lateral thickness (t) formed between the two side walls 9 and 10 of the cylindrical bearing 4 and the two cam protrusions 12 and 13, and a guide slope. The width of the groove 14 is designed to be approximately the same. The pair of elastic arms 23, 23 having such a configuration is formed integrally with the temple body 21 and is configured as a single component. The pair of elastic arms 23, 23 may be configured separately and joined to the temple body 21.

  10 and 11 show a work process in which the temple 20 is rotatably attached to the columnar bearing 4 fixed to the connecting portion of the armor 3. First, as shown in FIG. 10, the tip portions of the pair of elastic arms 23, 23 of the temple 20 are pressed in the direction indicated by the arrow P with a pinch tool or fingers (not shown) so that the elastic arms 23, 23 approach each other. To be elastically deformed. The distance M between the top ends of the hinge pins 25, 25 of the elastically deformed elastic arms 23, 23 is larger than the distance N between the front end opening edges of the pair of inclined guide grooves 14, 14 facing each other in the cylindrical bearing 4. The hinge pins 25 and 25 are fitted into the inclined guide grooves 14 and 14 in a posture in which they are elastically deformed until they become slightly small, and the hinge pins 25 and 25 are aligned with the pair of shaft holes 8 and 8 of the cylindrical body 5. When the pressing force of both elastic arms 23 and 23 is released, both hinge pins 25 and 25 are rotatable to both shaft holes 8 and 8 by the elastic restoring force of both elastic arms 23 and 23 as shown in FIG. And the shafts 24 and 24 at the tip portions of the elastic arms 23 and 23 are supported on the support surfaces 11 and 11 (the bottom surfaces of the both inclined guide grooves 14 and 14) sandwiched between the side wall 9 and the cam projection 12. Pressed and locked, temple 0 is pivotally attached to the folding position relative to the cylindrical bearing 4.

  When the temple 20 locked and held in the folded position with respect to the cylindrical bearing 4 is rotated about the shaft hole 8 toward the opening position indicated by the arrow A in FIG. 11, both elastic arms 23, 23 is elastically deformed so that both shaft portions 24 and 24 get over the cam projections 12 and 12 and are pushed onto the support surface 11 between the cam projection 12 and the cam projection 13 at an intermediate position (b) in FIG. At the same time, the click feeling that makes a clicking sound is obtained. Further, when the temple 20 is rotated in the direction of arrow A, the tip portions of both elastic arms 23, 23 are elastically deformed again, so that both shaft portions 24, 24 get over the cam projections 13, 13, and the open position of FIG. In (c), at the same time as being pressed and locked to the support surface 11 between the cam projection 13 and the side wall 10, a click feeling that makes a clicking sound is obtained.

  As described above, by turning the temple 20, the temple 20 can be clicked with a click sound in three stages of the folding position (a), the intermediate position (b) and the opening position (c) shown in FIG. Since it is latched and held by the cylindrical bearing 4, the opening and closing operation of the temple 20 is smooth and reliable, and no rattling or fluttering occurs. Moreover, the connection structure of the temple 20 is simple, the temple 20 can be easily attached to the connection part of the armor 3 and can be removed and replaced.

  In the above-described embodiment, the two cam protrusions 12 and 13 are provided on the columnar bearing 4, but three or more or one cam protrusion may be provided. Further, the cross-sectional shape of the cam protrusion is not limited to the illustrated chevron shape, and a semicircular shape or other appropriate cross-sectional shape can be adopted. Furthermore, although the cylindrical bearing 4 is a single component, it may have a structure in which a plurality of components are combined.

DESCRIPTION OF SYMBOLS 1 Eyeglass frame 2 Front part 3 Yoroi 4 Cylindrical bearing 5 Cylindrical main body 6 Cavity part 7,7 A pair of support part 8,8 A pair of axial hole 9,10 Side wall 11 Support surface 12,13 Cam protrusion 14 Inclination guide groove DESCRIPTION OF SYMBOLS 20 Temple 21 Temple main body 22 Notch part 23, 23 A pair of elastic arm 24, 24 A pair of axial part 25, 25 A pair of hinge pin

JP 2011-27828 A JP 2002-122819 A Japanese Patent Application Laid-Open No. 11-1943060 JP 9-325303 A

Claims (6)

A temple frame connecting structure for a spectacle frame that is rotatably attached to a connecting portion of an armor provided on both sides of the front part of the spectacle frame without using a screw hinge,
A cylindrical bearing is provided at the connecting portion of the armor,
The columnar bearing is formed with a cavity portion in which an intermediate side portion of the columnar body is cut out to fit the distal end portion of the temple, and a pair of support portions opposed to each other up and down across the cavity portion. The pair of support portions are provided with a pair of shaft holes penetrating in the axial direction, respectively, and two side walls defining the rotation range of the temple around the shaft hole. Furthermore, a plurality of cam projections facing each other at a predetermined interval in the circumferential direction centering on the shaft hole are provided on the support surfaces opposite to each other above and below the pair of support portions,
The temple is provided with a pair of elastic arms that are provided with a notch extending in the axial direction from the tip to be elastically deformable in the vertical direction, and a hinge pin that protrudes outward in the vertical direction is provided at the tip of the pair of elastic arms. Being
The tip portions of the pair of elastic arms are fitted into the space in a posture that is elastically deformed by pressing them close to each other, and the hinge pins of the pair of elastic arms are rotatably engaged with the pair of shaft holes. When combined, at a position where the tip portions of the pair of elastic arms are adjacent to the cam projection, the pair of elastic arms are assembled by being pressed and locked to the support surfaces of the pair of support portions by the elastic restoring force of the pair of elastic arms,
When the temple is rotated from the folded position to the open position with respect to the front portion, the tip portions of the pair of elastic arms are elastically deformed to overcome the cam protrusion and are pressed against and locked to the adjacent support surface. A structure for connecting temples of a spectacle frame, characterized in that a click feeling can be obtained each time.   The pair of elastic arms of the temple are formed in a taper shape that is gradually wider toward the tip, and a thin shaft portion that is fitted into the cavity portion is protruded from the tip portion, and the tip of the shaft portion is protruded. The temple connecting structure for a spectacle frame according to claim 1, wherein the hinge pin is provided.   The columnar bearing is provided with an inclined guide groove for guiding a tip portion of the pair of elastic arms on the support surface adjacent to the side wall defining a folding position of the temple. 3. A temple connecting structure for eyeglass frames according to 1 or 2.   The temple connecting structure for eyeglass frames according to claim 1, 2 or 3, wherein the cylindrical bearing is constituted by a single part.   The temple connecting structure for a spectacle frame according to any one of claims 1 to 4, wherein the pair of elastic arms and the hinge pin of the temple are integrally formed with a temple body.   The temple connecting structure for a spectacle frame according to any one of claims 1 to 4, wherein the pair of elastic arms and the hinge pin of the temple are configured separately from the temple body.

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