JP6263784B1 - Pivoting mechanism for eyeglass frame, shaft member and elastic member - Google Patents

Abstract

[PROBLEMS] To reduce the overall size and eliminate the need for internal thread processing on the bracket and to easily assemble the structure, so that a stable lifting force can be maintained over a long period without loosening. Provides a pivoting mechanism. A spectacle frame pivot attachment mechanism 1 for pivotally connecting a first member 110 and a second member 120 constituting a spectacle frame, wherein a hole 112A formed in the first member is provided. In addition, the shaft 10 configured to be able to be inserted into the holes 122A and 123A formed in the second member and an intermediate position in the axial direction of the shaft in the radial direction about the axis of the shaft An elastic portion 20 that can be elastically deformed and has shaft portion engaging means for engaging with the shaft portion to restrict axial movement of the shaft portion, and the elastic portion includes the first member and The second member is configured to be in sliding contact with the inner peripheral surface of at least one of the holes while being biased with a predetermined pressing force or more. [Selection] Figure 2

Description

  The present invention relates to a pivoting mechanism, a shaft member, and an elastic member for a spectacle frame that can be easily assembled to a member.

  Conventionally, a hinge structure is used to rotate a pair of members in various situations. This hinge structure is often used, for example, as a structure for connecting a front part and a temple part of a frame of glasses. In the hinge structure, a female screw hole is formed in one bracket, a through hole is formed in the other bracket, and a fastening male screw is screwed into the female screw hole of one bracket through the through hole of the other bracket. . The rotating shaft of the hinge structure is carried by the cylindrical portion of the shaft portion of the male screw body.

When the hinge structure is repeatedly rotated, the male screw body may loosen. In order to suppress loosening of the male screw body, for example, a washer (washer) is inserted into a shaft portion of the male screw body.
For example, in addition to a general ring-shaped “flat washer”, the washer has protrusions extending in the radial direction on the inner circumference and outer circumference, and is engaged with a member to be fastened or a screw fastening body to prevent loosening. "Washer with tongue", "Washer with claw" where short claws bent in the axial direction engage with the object to be fastened, "Spring washer" which prevents loosening of the screw fastening body by elastic deformation, Teeth for biting into the fastening surface There is a “toothed washer” or the like provided around (see Non-Patent Document 1).

  Furthermore, as an application of this washer, the outer peripheral shape of the washer is made into a non-circular shape, and is engaged with the recessed portion of the member to be fastened in the circumferential direction. Further, a relative rotational force in the loosening direction acts between the washer and the male screw body. There is also a structure that forms an engagement mechanism in which the state of mutual engagement is maintained (see Patent Document 1).

JP 2014-105797 A

Japanese Industrial Standard JIS 1251 Spring Washer

  Since the conventional hinge structure of the spectacle frame has a high rotation frequency and a large amount of vibration and swing during use, the spring washer disclosed in Non-Patent Document 1 hardly obtains the effect of preventing the loosening of the male screw body. In addition, if the male screw body is loosened, the resistance applied when the hinge structure is opened and closed, the so-called piercing force, and the backlash of the hinge occur. It was very difficult to use.

  Further, in recent years, eyeglass frames are required to have a thin frame and a hinge structure that is extremely compact in order to meet the demand for improvement in design and weight reduction. Therefore, for reasons of space, it may be difficult to apply the reverse rotation prevention structure including the washer of Patent Document 1 to the hinge structure as it is. Furthermore, since the small-sized screws are used for the hinge structure of the eyeglass frame, it is necessary to perform female threading on one side of the bracket, which is expensive and requires a fine screwing work for assembly to the hinge structure. In short, there was a problem that assembly workability was poor.

  The present invention has been made by the inventor's diligent research in view of the above-mentioned problems, and has a structure that allows easy assembly while eliminating the need for processing the internal thread on the bracket while achieving overall compactness. An object of the present invention is to provide a pivoting mechanism, a shaft member, and an elastic member for a spectacle frame that can maintain a stable lifting force over a long period of time without causing loosening.

  The pivot attachment mechanism of the present invention is a pivot attachment mechanism for an eyeglass frame that connects the first member and the second member constituting the eyeglass frame so as to be pivotable, and includes a hole formed in the first member, In addition, the shaft portion configured to be able to be inserted into the hole formed in the second member and an intermediate position in the axial direction of the shaft portion can be elastically deformed in the radial direction with the shaft of the shaft portion as a substantial center. And an elastic portion having a shaft portion engaging means for engaging the shaft portion to restrict axial movement of the shaft portion, wherein the elastic portion is formed by the first member and the second member. The inner surface of at least one of the holes is configured to come into sliding contact while being urged with a predetermined pressing force or more.

  The elastic portion may include a portion interposed in a gap between the first member and the second member.

  The elastic portion may be configured to be capable of different elastic deformation at two different positions in the axial direction.

  The shaft member of the present invention is a shaft member used in a pivoting mechanism for a spectacle frame having a first member and a second member each having one or more engagement receiving portions. A hole formed in the first member, a shaft portion configured to be inserted into the hole formed in the second member, and a head having a large diameter compared to the shaft portion; The shaft portion is configured to be able to be inserted through an elastic portion that can be elastically deformed in a radial direction about the shaft of the shaft portion at an intermediate position in the axial direction, and when the shaft portion is inserted through the elastic portion, It has a locking part that can be locked to the locking piece of the elastic part and can restrict the movement of the shaft part in the withdrawal direction, and one or more engaging parts that engage with the engagement receiving part. It is characterized by that.

  The elastic member according to the present invention is for a spectacle frame including a hole formed in the first member and a hole formed in the second member so as to be inserted into the hole and having a shaft portion having a locking portion. An elastic member used in the pivot attachment mechanism, wherein the first member and the second member can be elastically deformed in the radial direction about the axis of the shaft portion at an intermediate position in the axial direction of the shaft portion. A body portion that is slidably contacted while being urged by at least a predetermined pressing force with respect to at least one of the first member, a portion interposed in a gap between the first member and the second member, and the locking portion of the shaft portion. A locking piece that can be locked to restrict movement of the shaft portion in the removal direction, and the locking piece is locked to the locking portion, thereby restricting relative rotation to the shaft portion. It is characterized by being.

  According to the present invention, although the entire structure can be made compact and the structure can be easily assembled, a stable lifting force can be maintained for a long period of time. Furthermore, unlike the conventional hinge structure using a screw, there is an effect that rattling due to loosening of the screw cannot occur.

It is a figure which shows the hinge to which the pivot attachment mechanism which concerns on 1st embodiment is applied. It is a figure which shows the components which comprise the hinge to which the pivot attachment mechanism which concerns on 1st embodiment is applied. It is a side view which shows the pin of a pivot attachment mechanism. It is a perspective view which shows the cylindrical elastic part of a pivot attachment mechanism. It is a figure which shows the cylindrical elastic part of a pivot attachment mechanism. It is sectional drawing which shows the hinge to which the pivot attachment mechanism is applied. It is a perspective view which shows the cylindrical elastic part of the pivot attachment mechanism which concerns on 2nd embodiment. It is sectional drawing which shows the cylindrical elastic part of the pivot attachment mechanism which concerns on 2nd embodiment. It is a figure which shows the cylindrical elastic part reduced in diameter. It is a figure which shows the other shape of a flange part. It is sectional drawing which shows the hinge to which the pivot attachment mechanism which concerns on 2nd embodiment is applied. It is a figure which shows a locking piece in sliding contact with a 1st through-hole in steps. It is a figure which shows the example of the uneven | corrugated shape formed in a pin side seat part and a fitting part. It is a figure which shows the pin side seat part which formed the taper surface. It is a figure which shows the other shape of a cylindrical elastic part. It is a perspective view which shows a helical leaf | plate spring. It is a figure which shows an example of a pin type pivot attachment member. It is a figure which shows the other example of a pin type pivot attachment member. It is sectional drawing which shows the pivot attachment mechanism by another structure.

  A pivot attachment mechanism according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a hinge to which a pivoting mechanism according to the first embodiment is applied, in which (A) is a perspective view and (B) is a plan view. FIG. 2 is a view showing components constituting a hinge to which the pivot attachment mechanism according to the first embodiment is applied.

  The pivot attachment mechanism 1 is applied to a hinge 100 used in an eyeglass frame or the like. That is, the hinge 100 of this embodiment includes a pair of brackets 110 and 120, and the first bracket 110 and the second bracket 120 are pivotally connected by the pivot attachment mechanism 1. The pivot attachment mechanism 1 has a pin 10 (shaft portion) and a cylindrical elastic portion 20 (elastic portion).

  FIG. 3 is a view showing the pin 10 of the pivot attachment mechanism 1. The pin 10 includes a pin head portion 12 and a pin shaft portion 14. The pin head portion 12 is not particularly limited, but here has a circular outer shape, is located on one end side of the pin shaft portion 14, and extends in the radial direction from the pin shaft portion 14. In addition, the pin side seat part 15 is formed in the pin shaft part 14 side of the pin head part 12, specifically, a part corresponding to a lower part or a root.

  The pin shaft portion 14 includes a columnar (or cylindrical) columnar portion 14a, an engagement portion 16 disposed on the outer peripheral surface of the columnar portion 14a on the pin head 12 side, and a recess 14b provided in the columnar portion 14a. It has the recessed latching | locking part 18 formed in this. In addition, the hollow 14b is formed over the perimeter of the cylindrical part 14a between the intermediate position and the front-end | tip of the cylindrical part 14a.

  The engaging portion 16 has a plurality of ribs 16a that protrude radially from the outer peripheral surface of the columnar portion 14a, and is configured by arranging the ribs 16a at a predetermined interval along the circumferential direction. The rib 16a has a tip positioned closer to the cylindrical portion 14a than the outer edge of the pin head 12. That is, the rib 16 a is formed so that the tip does not protrude outward from the outer edge portion of the pin head 12.

  The concave locking portion 18 has a plurality of radially projecting ribs 18a, and is configured by arranging the ribs 18a at predetermined intervals along the circumferential direction. The rib 18a is configured such that the tip portion is located in the recess 14b. That is, the rib 18a is formed such that the tip portion does not protrude outside the outer peripheral surface of the cylindrical portion 14a. Further, a stepped portion 19 is formed in the concave locking portion 18 at a boundary portion with the outer peripheral surface of the cylindrical portion 14a.

  4 is a perspective view showing the cylindrical elastic part 20 of the pivoting mechanism 1, FIG. 5 shows the cylindrical elastic part 20 of the pivoting mechanism 1, (A) is a side view, and (B) is a sectional view. It is. The cylindrical elastic part 20 has a body part 22, a flange part 24, and a locking piece 26 formed at the other end part of the body part 22.

  The trunk | drum 22 is hollow, and the external shape is formed in the substantially barrel shape which swells outside in the middle part. The body portion 22 has a longitudinal section 28 provided so as to extend in the axial direction of the wall surface (vertical direction in FIG. 5), and the longitudinal section 28 forms a gap extending in the entire axial direction in a part of the side wall. Is done. The body 22 is formed with a plurality of slits 29 extending from the other end (the lower end in FIG. 5) to the midway position along the axial direction. The longitudinal sections 28 and the slits 29 are formed at a predetermined interval over the entire circumference of the body portion 22, and are formed at equal intervals with a relative phase difference of 60 ° in the circumferential direction here. The number of slits 29 is not particularly limited, and may be singular. Further, the interval between the longitudinal section 28 and the slit 29 is not limited to an equal interval, and each interval may be different.

  Further, the body portion 22 is formed so that the pin 10 can be inserted into the hollow portion, and when the pin 10 is inserted, the gap of the longitudinal section 28 is expanded so that the outer periphery can be elastically expanded. Is done. That is, it is preferable that the hollow portion of the trunk portion 22 is set to a size such that the inner diameter is smaller than the outer diameter of the pin 10 and the barrel portion 22 can be deformed in the elastic region.

  The flange portion 24 protrudes outward in the radial direction over the entire circumference of one end portion (upper end portion in FIG. 5) of the body portion 22, and is formed so that the axial positions on the distal end side and the proximal end side are different. Yes. Here, the flange portion 24 is not particularly limited, but has a shape in which the distal end side is inclined downward in the axial direction from the proximal end side.

  The flange portion 24 is formed so as to be fitted into a space formed between the first bracket 110 and the second bracket 120 while being elastically deformed. Specifically, the flange portion 24 fits in the groove portion 116 (see FIG. 2) of the first bracket 110 and is interposed between the first bracket 110 and the second bracket 120 to be connected, and the first bracket 110 and the second bracket 120. The backlash of the 1st bracket 110 and the 2nd bracket 120 is suppressed by energizing to. Therefore, the flange portion 24 is preferably formed to have a thickness substantially equal to the size obtained by adding the size of the gap between the first bracket 110 and the second bracket 120 and the depth of the groove portion 116.

  The locking piece 26 has a tapered shape, and a plurality of locking pieces 26 are formed on the entire circumference of the other end portion of the body portion 22. Further, the locking piece 26 has a curved shape such that the distal end portion is closer to the central axis of the cylindrical elastic portion 20 than the proximal end portion. The plurality of locking pieces 26 are not particularly limited, but are formed so as to be arranged at equal intervals here.

  Next, returning to FIG. 2, the first bracket 110 and the second bracket 120 of the hinge 100 to which the pivot attachment mechanism 1 is applied will be described. The first bracket 110 has a first sleeve portion 112 and a first arm (base portion) 114 continuous to the first sleeve portion 112, and the first through hole 112 </ b> A drilled in the first sleeve portion 112 has a cylindrical elastic shape. Part 20 is inserted. A groove 116 into which the flange 24 is fitted is formed around the first through hole 112A. 112 A of 1st through-holes are formed in the magnitude | size which contact | abuts the outer periphery of the trunk | drum 22 to which the magnitude | size of the inner periphery elastically deformed. That is, the size of the inner periphery of the first through hole 112 </ b> A is set such that the first through hole 112 </ b> A is in sliding contact with the outer peripheral surface of the body portion 22 that is expanded by the pin 10. The body 22 may be configured to be elastically deformed and reduced in diameter when inserted into the first through hole 112A.

  The second bracket 120 is configured such that the pin 10 can be inserted therein, and a pair of second sleeve portions 122 and 123 arranged at a predetermined interval with respect to the axial direction of the inserted pin 10. , And a second arm (base) 124 that is continuous therewith. The second sleeve portion 122 is provided with a second through hole 122A, and the second sleeve 123 is provided with a third through hole 123A. A pin 10 is inserted into the second through-hole 122A and the third through-hole 123A, and the second arm 124 rotates around the pin 10 as a rotation axis.

  Of the pair of second sleeve portions 122 and 123, the pin head portion 12 is fitted around the second through hole 122A of the second sleeve portion 122 with which the pin side seat portion 15 of the pin head portion 12 abuts. A joint portion 126 is formed.

  The first sleeve portion 112 is disposed between the second sleeve portions 122 and 123. At this time, the flange portion 24 of the cylindrical elastic portion 20 that fits into the first through hole 112 </ b> A fits into the groove portion 116 and is thus sandwiched between the first sleeve portion 112 and the second sleeve portion 122.

  A sleeve side engagement receiving portion 128 is formed on the inner peripheral surface of the second through hole 122A. The sleeve side engagement receiving portion 128 is formed by forming a plurality of grooves extending in the axial direction (the number corresponding to the number of ribs 16a) along the circumferential direction on the inner peripheral surface of the second through hole 122A. Each groove of the sleeve side engagement receiving portion 128 allows the rib 16a of the first engagement portion 16 to enter along the axial direction and engages with the rib 16a so as to restrict circumferential movement. .

  Hereinafter, assembly of the hinge 100 will be described. First, the cylindrical elastic part 20 is inserted into the first through hole 112A of the first bracket 110, and the first bracket 110 and the second bracket 120 are combined. Thus, the first through hole 112A, the second through hole 122A, and the third through hole 123A are coaxial, and the first sleeve portion 112 is disposed between the pair of second sleeve portions 122 and 123. At this time, the flange portion 24 is interposed in the gap between the first bracket 110 and the second bracket 120 and exerts an urging force in the axial direction, thereby suppressing backlash between the first bracket 110 and the second bracket 120.

  Next, the pin 10 is inserted through the first through hole 112A, the second through hole 122A, and the third through hole 123A that are coaxial. Here, since the cylindrical elastic part 20 is fitted in the first through hole 112A, the pin 10 is inserted into the first through hole 112A via the cylindrical elastic part 20, and the tip part of the cylindrical elastic part 20 is inserted. Pass through and fit into the third through hole 123A.

  FIG. 6 is a cross-sectional view taken along line AA of FIG. 1B, and is a cross-sectional view showing a hinge 100 to which the pivot attachment mechanism 1 is applied. When the pin 10 is inserted, the body portion 22 of the cylindrical elastic portion 20 is positioned at a substantially intermediate position in the axial direction of the pin 10, and the inner peripheral surface receives a pressing force from the pin 10, and faces outward in the radial direction. Elastically deforms to spread. Accordingly, the body portion 22 is elastically deformed so that the gap of the longitudinal section 28 is pushed and expanded about the axis of the pin 10 as the center, and the outer peripheral surface of the body portion 22 pushes the inner peripheral surface of the first through hole 112A more than a predetermined amount. It makes sliding contact while being urged by pressure.

  Further, when the pin 10 enters a space surrounded by the plurality of locking pieces 26, the pin 10 presses the locking pieces 26 to be elastically deformed. The locking piece 26 is elastically deformed so as to bend outward in the radial direction of the cylindrical elastic portion 20, and further, when the pin 10 enters, fits into the recess 14 b of the pin 10 and is engaged with the concave locking portion 18. .

  When the locking piece 26 is engaged with the concave locking portion 18, if the pin 10 is moved in the removal direction (upward direction shown in FIG. 6), the locking piece 26 is stepped on the concave locking portion 18. It contacts the part 19. At this time, an external force that deforms toward the outside is applied to the body portion 22, but the deformation is restricted because it contacts the inner peripheral surface of the first through hole 112 </ b> A. Therefore, the locking piece 26 cannot get over the step portion 19, and the pin 10 cannot be removed from the cylindrical elastic portion 20. That is, the movement of the pin 10 in the removal direction is restricted by the cylindrical elastic portion 20.

  Further, the pin head 12 is fitted into the fitting portion 126 as the pin 10 is inserted. Further, each rib 16 a of the engaging portion 16 enters each groove of the sleeve side engagement receiving portion 128, and the engaging portion 16 engages with the sleeve side engagement receiving portion 128. Thus, the assembly of the hinge 100 is completed.

  According to the hinge 100 assembled as described above, the pin 10 and the second bracket 120 engage with each other such that the rib 16a of the engaging portion 16 fits into the groove of the sleeve side engagement receiving portion 128 so that they cannot rotate relative to each other. To do. Further, the pin 10 and the cylindrical elastic portion 20 restrict relative rotation of each other when the locking piece 26 is fitted between the ribs 18 a of the concave locking portion 18. Therefore, the pin 10, the cylindrical elastic part 20, and the second bracket 120 are combined so as to rotate integrally around the axis.

  In contrast, the first bracket 110 is in sliding contact with the cylindrical elastic portion 20 and the second bracket 120. Specifically, the first bracket 110 is in sliding contact with the inner peripheral surface of the first through hole 112 </ b> A being urged from the body portion 22. Further, the flange portion 24 is interposed in the gap between the first sleeve portion 112 and the second sleeve portion 122, and the first bracket 110 is arranged so that the first sleeve portion 112 is not substantially spaced from the pair of second sleeve portions 122. Therefore, it comes into sliding contact with the second bracket 120.

  As described above, the pivot mechanism 1 is constituted by the pin 10 and the cylindrical elastic portion 20, and therefore, it is easy to manufacture without requiring female thread processing and the like, and can be easily downsized. Furthermore, if such a pivot attachment mechanism 1 is applied, the whole hinge can be made compact. Moreover, the cylindrical elastic part 20 and the 2nd bracket 120 always slide with respect to the 1st bracket 110, and can maintain the stable lifting force for a long period of time.

  Further, the assembly of the hinge 100 is completed simply by combining the first bracket 110 into which the cylindrical elastic portion 20 is inserted with the second bracket 120 and inserting the pin 10 into the first through hole 112A and the second through hole 122A. As a result, a fine screwing operation is not required and assembly can be easily performed.

  Next, the pivot mechanism 1 according to the second embodiment will be described. In addition, the same code | symbol is attached | subjected about the part similar to said 1st embodiment, and the description is abbreviate | omitted. 7 is a perspective view showing the cylindrical elastic part 40 of the pivoting mechanism 1 according to the second embodiment, and FIG. 8 is a cross-sectional view showing the cylindrical elastic part 40 of the pivoting mechanism 1 according to the second embodiment. is there. The cylindrical elastic part 40 is fitted into the first through hole 112 </ b> A and includes a body part 42, a flange part 44, and a locking piece 26.

  The body portion 42 is hollow and has a substantially annular shape having an outer peripheral surface parallel to the axial direction, and the outer peripheral surface has an outer diameter larger than the inner diameter of the first through hole 112A. Further, a plurality of (here, three) slits 29 and one longitudinal section 48 are formed in the body portion 42, and the longitudinal section 48 is formed with a wider gap than the longitudinal section 28 in the first embodiment.

  Accordingly, when the body portion 42 is inserted into the first through hole 112A, the body portion 42 is elastically deformed so as to be reduced in diameter by being pressed by the inner peripheral surface of the first through hole 112A. Further, the vertical section 48 is set to a size that does not hinder the elastic deformation of the body portion 42 in the first through hole 112A.

  Here, FIG. 9 is a view showing the cylindrical elastic part 40 with a reduced diameter. In this embodiment, when the cylindrical elastic part 40 is fitted into the first through hole 112A, the longitudinal part 48 is shown in FIG. Elastically deforms so that a gap remains. Note that the longitudinal section 48 is not limited to a size such that a gap remains in the first through hole 112A. The longitudinal section 48 is formed by the longitudinal section 48 when the gap is just inserted into the first through hole 112A. You may form in the magnitude | size with which the made | formed two edge parts are attached.

  The flange portion 44 projects outward in the radial direction of the body portion 42, and is formed so that the position in the axial direction differs between the distal end side and the proximal end side. Here, the flange portion 44 is not particularly limited, but has a shape in which the distal end side is inclined upward in the axial direction from the proximal end side. Thereby, the flange part 44 can be elastically deformed and inserted in the space formed between the first bracket 110 and the second bracket 120. Moreover, the thickness of the flange part 44 is set to the thickness which can suppress the backlash between the 1st bracket 110 and the 2nd bracket 120 similarly to the flange part 24 of 1st embodiment.

  The flange portion 44 may have a curved shape from the proximal end side to the distal end side, and the axial positions of the distal end side and the proximal end side of the flange portion 44 are not limited to the above positions, and the distal end The side may be positioned below the base end side. Further, the flange portion 44 is curved in a wavy shape, for example, as shown in FIG. 10, the front end side is located above the base end side and the midway portion is located below the base end side. It may be a shape. Of course, the shape of the wave is not particularly limited, and the distal end side may be located below the proximal end side, and the midway portion may be located above the proximal end side. Further, the number of waves is not limited to one and may be plural.

  Hereinafter, assembly of the hinge 100 will be described. First, the cylindrical elastic part 40 is fitted into the first through hole 112 </ b> A of the first bracket 110. Here, since the outer diameter of the body part 42 is larger than the inner diameter of the first through hole 112A, the body part 42 is elastically deformed so as to reduce the diameter and presses the inner peripheral surface of the first through hole 112A.

  Next, the first bracket 110 is combined with the second bracket 120. Thus, the first through hole 112A, the second through hole 122A, and the third through hole 123A are coaxial, and the first sleeve portion 112 is disposed between the pair of second sleeve portions 122 and 123.

  The flange portion 44 provides an axial biasing force that presses the second bracket 120 against the first bracket 110. That is, when the flange portion 44 is sandwiched between the first bracket 110 and one of the second brackets 120, the flange portion 44 is pressed and elastically deformed by the one second sleeve portion 122 to urge the first bracket 110 in the axial direction. That is, it is biased toward the other second sleeve 123 side.

  Next, the pin 10 is inserted into the first through hole 112A, the second through hole 122A, and the third through hole 123A that are coaxial. Here, since the cylindrical elastic part 40 is fitted in the first through hole 112A, the pin 10 is inserted into the first through hole 112A via the cylindrical elastic part 40, and the tip part of the cylindrical elastic part 40 is inserted. Pass through and fit into the third through hole 123A.

  FIG. 11 is a cross-sectional view showing a hinge 100 to which the pivot attachment mechanism 1 according to the second embodiment is applied. As shown in FIG. 11, when the tip of the pin 10 passes through the cylindrical elastic part 40 and is inserted into the third through hole 123 </ b> A, the concave engaging part 18 engages with the locking piece 26. That is, when the tip of the pin 10 enters a space surrounded by the plurality of locking pieces 26, the locking piece 26 is pressed by the tips of the pins 10 and bent outward in the radial direction of the cylindrical elastic portion 40. It is elastically deformed. When the pin 10 further enters, the locking piece 26 is fitted in the recess 14 b and engaged with the concave locking portion 18. As a result, the pin 10 is restricted from moving in the removal direction by the cylindrical elastic portion 20.

  Further, the pin head 12 is fitted into the fitting portion 126 as the pin 10 is inserted. Further, each rib 16 a of the engaging portion 16 enters each groove of the sleeve side engagement receiving portion 128, and the engaging portion 16 engages with the sleeve side engagement receiving portion 128. Thus, the assembly of the hinge 100 is completed.

  According to the hinge 100 assembled as described above, the pin 10 and the second bracket 120 engage with each other such that the rib 16a of the engaging portion 16 fits into the groove of the sleeve side engagement receiving portion 128 so that they cannot rotate relative to each other. To do. Further, the pin 10 and the cylindrical elastic portion 40 restrict relative rotation of each other when the locking piece 26 is fitted between the ribs 18 a of the concave locking portion 18. Therefore, the pin 10, the cylindrical elastic part 40, and the second bracket 120 are combined so as to rotate integrally around the axis.

  In contrast, the first bracket 110 is in sliding contact with the cylindrical elastic portion 40 and the second bracket 120. Specifically, the first bracket 110 is in sliding contact with the inner peripheral surface of the first through hole 112 </ b> A being urged from the body portion 42. Further, since the flange portion 44 is elastically deformed and interposed in the gap between the first sleeve portion 112 and the second sleeve portion 122, the first bracket is slidably contacted while urging the second bracket 120 by the flange portion 44.

  Further, since the outer circumferential surface parallel to the axial direction is in sliding contact with the inner circumferential surface of the first through hole 112A in the entire area, the barrel portion 42 of the cylindrical elastic portion 40 is substantially barrel-shaped barrel according to the first embodiment. Compared with the portion 22, the sliding area to the first through hole 112 </ b> A is increased and the surface pressure can be distributed while being distributed, so that a stable lifting force can be maintained for a longer period of time.

  Further, since the flange portion 44 is formed so that the position in the axial direction is different between the distal end portion and the proximal end portion, the flange portion 44 is elastically deformed and fitted in the gap between the first bracket 110 and the second bracket 120. Then, the first bracket 110 is biased toward the second bracket 120 side. As a result, the frictional force acting on the contact surface between the first bracket 110 and the second bracket 120 increases, and the lifting force can be maintained for a longer period.

  In the second embodiment, the cylindrical portion 42 is slidably contacted with the inner peripheral surface of the first through hole 112A, but the locking piece 26 may be further slidably contacted. FIG. 12 is a diagram showing stepwise that the locking piece comes into sliding contact with the first through hole, (a) showing when the cylindrical elastic portion 40 is fitted into the first through hole 112A, and (b) FIG. 2C shows the time when the tip of the pin 10 has entered the cylindrical elastic portion 40, and FIG. 4C shows the time when the locking piece 26 comes into contact with the inner peripheral surface of the first through hole 112A. Here, in order to make the locking piece 26 slidably contact the first through hole 112A, the depth of the recess 14b is formed shallower than that of the recess 14b of the second embodiment. Moreover, the cylindrical elastic part 40 is inserted in the first through hole 112A in advance as shown in FIG.

  Next, the pin 10 is inserted into the coaxially formed first through hole 112A, second through hole 122A, and third through hole 123A. When the tip of the pin 10 enters the space surrounded by the locking piece 26, the locking piece 26 comes into contact with the pin 10 and expands in diameter as shown in FIG. , Elastically deform outward.

  When the tip of the pin 10 is inserted into the third through hole 123A, the locking piece 26 is fitted into the recess 14b and engaged with the concave locking portion 18 as shown in FIG. Here, since the recess 14b is formed shallower than the recess 14b of the second embodiment, the locking piece 26 expands in diameter compared with the second embodiment and engages with the concave locking portion 18. Is done. Therefore, since the locking piece 26 is in sliding contact with the inner peripheral surface of the first through hole 112A from the base end part to the middle part, the sliding area of the cylindrical elastic part 40 to the first through hole 112A is increased and the surface pressure is dispersed. Since it can be energized while being stable, it is possible to maintain a stable lifting force for a longer period of time.

  The cylindrical elastic portion 40 can be elastically deformed in the circumferential direction at the body portion 42, and can be elastically deformed in the radial direction at the locking piece 26. Thus, when the pin 10 is inserted in the first through hole 112A, the cylindrical elastic portion 40 can be elastically deformed in a manner in which two different positions in the axial direction are different from each other. As a result, the body portion 42 can function as a sliding contact portion that is in sliding contact with the first through hole 112 </ b> A, and the locking piece 26 mainly prevents the pin 10 from coming off in the axial direction and engages the cylindrical elastic portion 40 and the pin 10. It is possible to further function as a sliding contact surface that comes into sliding contact with the first through hole 112A.

  In each of the above embodiments, the pin 10 is engaged with the second bracket 120 so that the pin 10 cannot be rotated relative to the pin bracket 14, and an engagement portion 16 is formed on the pin shaft portion 14. Although the case where the sleeve side engagement receiving portion 128 is formed has been described as an example, the positions where the engagement portion 16 and the sleeve side engagement receiving portion 128 are formed are not particularly limited. The engaging portion 16 may be formed on the side surface of the pin, and the sleeve side engaging receiving portion 128 may be formed on the inner peripheral surface of the fitting portion 126 that contacts the side surface of the pin head 12. Further, the engaging portion 16 may be formed on the tip end side of the pin 10 and the sleeve side engagement receiving portion 128 may be formed on the inner peripheral surface of the third through hole 123A through which the tip end is inserted. Further, the engaging portions 16 are formed at a plurality of positions in the pin 10, and the sleeve side engagement receiving portions 128 are provided in the second through holes 122 </ b> A and / or the third through holes 123 </ b> A corresponding to the positions where the engaging portions 16 are formed. You may make it form.

  Further, the outer shape of the pin head 12 and the shape of the inner periphery of the fitting portion 126 are an elliptical shape, a polygonal shape such as a rectangle, a constant width figure such as a polygon of a rouleau, and the pin head 12 is fitted into the fitting portion 126. The pin 10 may be engaged with the second bracket 120 so as not to be relatively rotatable.

  In addition, a plurality of projections and depressions protruding in the axial direction are provided on the surface of the pin-side seat portion 15, and a plurality of projections and depressions are also provided on the bottom surface of the fitting portion 126 to fit the projections and recesses of the pin-side seat portion 15. By combining, the pin 10 may be engaged with the second bracket 120 so as not to be relatively rotatable. The shape of the unevenness formed on the pin side seat portion 15 and the fitting portion 126 is not particularly limited. For example, the shape of the sawtooth as shown in FIG. 13A or the unevenness shown in FIG. Any shape such as a chevron shape which is an inclined surface, and a corrugated shape where the unevenness shown in FIG. 13C is a curved surface may be used. The direction in which the unevenness is formed is not particularly limited. For example, the unevenness may be formed in the radial direction, or the unevenness may be formed in a spiral shape. Also, a so-called embossed shape in which a plurality of fine irregularities are formed on a plane may be used.

  Moreover, in each embodiment mentioned above, although the seat surface of the pin side seat part 15 becomes a surface extended in the direction substantially orthogonal to an axial direction, it is not limited to this, The direction orthogonal to an axial direction It may be a tapered surface inclined with respect to the angle. Specifically, as shown in FIG. 14, a tapered surface 15 a that is inclined in the radial direction is formed on the pin side seat portion 15. Since the taper surface 15a is inclined so that the center side approaches the distal end portion, as a result, a tapered conical shape is formed on the distal end side. In this case, it is preferable that the bottom surface of the fitting portion 126 of the second bracket is an inclined surface that comes into contact with the tapered surface 15a. Alternatively, the taper surface 15a and the fitting portion 126 may be engaged to engage the pin 10 with the second bracket 120 so that the pin 10 cannot be rotated relative to the second bracket 120. For example, the engagement portion 16 may be formed on the tapered surface 15 a, and the sleeve side engagement receiving portion 128 may be formed on the bottom surface of the fitting portion 126.

  Note that the cylindrical elastic portion is not limited to the one constituted by the body portion, the flange portion, and the plurality of locking pieces, and can be elastically deformed at least in the first through-hole 112A. Any shape that urges the inner peripheral surface of the through hole 112A may be used. For example, as shown in FIG. 15A, a cylindrical elastic portion 50 having a tapered outer peripheral surface 52 that is inclined so as to be reduced in diameter from one end to the other end may be used. Further, as shown in FIG. 15B, a cylindrical elastic portion 60 having an outer peripheral surface 62 that is parallel to the axial direction from one end to the middle portion and gradually decreases in diameter so that the lower end portion is narrowed from the middle portion may be used. . A plurality of notches 54 are formed at one end portions of the outer peripheral surfaces 52 and 62 so that the cylindrical elastic portions 50 and 60 can be elastically contracted or expanded in diameter.

  Further, instead of the cylindrical elastic portion, a spiral leaf spring 130 wound in a spiral shape as shown in FIG. 16 may be used. In this case, the pin 10 is fitted into the spiral central portion of the spiral leaf spring 130 in the first through hole 112A. The spiral leaf spring 130 is in sliding contact with the inner periphery of the first through hole 112A while being elastically deformed. Of course, the number of turns of the spiral leaf spring 130 is not particularly limited.

  In each of the above embodiments, the pivot mechanism is constituted by the pin and the cylindrical elastic portion. However, the pivot mechanism may be constituted by one member. That is, the first bracket 110 and the second bracket 120 may be pivotally connected by fitting a pivot member as a pivot mechanism formed in a pin shape into the first through hole 112A and the second through hole 122A. Good. Here, FIG. 17 shows an example of the pin-type pivot member 70, (A) is a perspective view, and (B) is a sectional view. The pivoting member 70 shown in FIG. 17 (A) has a sliding contact portion 72 that bulges a portion in sliding contact with the inner peripheral surface of the first through hole 112A on the outer peripheral surface 70a, and the other end (see FIG. 17 (A)). One or more slits 74 extending from the lower end (in the direction shown) to the bulging portion are formed, and the inside extends from the opening 76 formed on the other end surface to the vicinity of one end as shown in FIG. It is preferable to form the cavity 78. In this case, the sliding contact portion 72 can be elastically deformed so as to narrow the gap of the slit 74.

  Further, the shape of the pin-type pivot member 70 is not particularly limited, and may be a shape as shown in FIG. 18, for example. That is, instead of the slidable contact portion 72, a slidable contact portion 82 which is fixed to the other end portion side and opens in a reverse umbrella shape toward the axially central portion side of the outer peripheral surface 70a with the other end portion side as a top portion is formed. In addition, the sliding contact portion 82 may have one or more slits 84. In this case, the sliding contact portion 82 can be elastically deformed so as to narrow the gap of the slit 84.

  If the pivot member 70 as described above is applied, the hinge as a whole can be made compact in the same manner as when the pivot mechanism 1 of each embodiment described above is applied, and the sliding contact portion is attached to the first bracket. By sliding the, it is possible to maintain a stable lifting force for a long time. Further, the assembly of the hinge 100 is completed simply by combining the first bracket 110 with the second bracket 120 and inserting the pivot member 70 into the coaxial first through hole 112A, second through hole 122A and third through hole 123A. Therefore, as compared with the case where the pivot attachment mechanism 1 is applied, the assembly can be further facilitated.

  In addition, the shape of the barrel portion of the cylindrical elastic portion is not limited to the above. For example, the shape of the outer shape has a surface substantially parallel to the axial direction, or has a constriction in the middle portion along the axial direction. A curved shape may be used. The body portion is not limited to a cylindrical shape, and may be a cylindrical shape such as a rectangular tube or an elliptical tube.

  Moreover, you may comprise the pivot attachment mechanism 1 by the axial part which has the external thread spiral groove which formed the screw thread, and the elastic part arrange | positioned so that an axial part may be surrounded. Specifically, as shown in FIG. 19, the shaft portion 90 includes a head portion 92, a cylindrical portion 94, and a screw portion 96.

  The head portion 92 extends in the radial direction more than the cylindrical portion 94, and a plus groove is formed on the end surface, and can be rotated by engaging with a plus tool. It should be noted that the outer shape of the head 92 may be a polygon or the like so that the outer periphery is engaged with a spanner and rotated. The cylindrical portion 94 is surrounded by the elastic portion 98 and is in close contact with the inner peripheral surface of the elastic portion 98.

  A contact surface 93 formed in a direction orthogonal to the axial direction is formed between the head 92 and the cylindrical portion 94, and the contact surface 93 presses the elastic portion 98 along the axial direction. In addition, surface contact is made so that sliding contact is possible. The screw portion 96 has a male screw spiral groove formed with a plurality of screw threads.

  The elastic portion 98 is, for example, a rubber member such as natural rubber or synthetic rubber, or a cylindrical member that can be elastically deformed, such as the body portions 22 and 42, and surrounds the cylindrical portion 94. In 112A, it interposes between 112A of 1st through-holes, and the axial part 90. As shown in FIG. In addition, in order to prevent the elastic part 98 from sliding directly on the inner peripheral surface of the first through hole 112A, sliding that can express an appropriate sliding condition integrally or separately on the outer peripheral surface of the elastic part 98. A sliding surface having properties may be provided. Specifically, as the sliding surface integral with the elastic portion 98, it is preferable to apply a coating for improving the wear resistance on the outer peripheral surface of the elastic portion 98. Further, a substantially annular ring member may be provided on the outer peripheral surface of the elastic portion 98 as a separate sliding surface from the elastic portion 98. The ring member at this time is preferably a shape that does not hinder at least the elastic deformation of the elastic portion 98, for example, a C-shaped ring member.

  When the pivot attachment mechanism 1 including the shaft portion 90 and the elastic portion 98 is applied, the second through hole 122A has an inner circumference that allows the contact surface 93 and the cylindrical portion 94 to pass through. It has a size that restricts the movement of the head 92. The third through-hole 123 </ b> A has a female thread spiral 150 that is screwed into the male thread spiral groove of the thread portion 96.

  In the above-described configuration, the first bracket 110 and the second bracket are inserted in advance so that the elastic portion 98 is inserted through the first through-hole 112A and the first through-hole 112A, the second through-hole 122A, and the third through-hole 123A are coaxial. Combine with the bracket 120. Then, as shown in FIG. 19, the shaft portion 90 is fastened to the second bracket 120 by inserting and rotating the shaft portion 90 into the first through hole 112A, the second through hole 122A, and the third through hole 123A that are coaxially formed. In addition, a downward force in the axial direction indicated by an arrow a can be applied to the elastic portion 98, the first bracket 110, and the second bracket 120. At this time, the elastic portion 98 is compressed by being sandwiched between the contact surface 93 and the second bracket 120, elastically deformed outward in the radial direction indicated by the arrow b, and urges the inner peripheral surface of the first through hole 112A. While sliding.

  The elastic portion 98 may be inserted into a hole in which the second through hole 122A and the first through hole 112A are coaxially mounted after being previously attached to the cylindrical portion 94 of the shaft portion 90.

  Even when the shaft portion 90 having the screw portion 96 and the elastic portion 98 are used, a stable lifting force can be maintained for a long period of time as in the case where the pivot attachment mechanism 1 of each embodiment described above is applied. . Further, since the shaft portion 90 and the elastic portion 98 can be slidably contacted, that is, can be configured to be relatively rotatable, friction is generated between the shaft portion 90 and the elastic portion 98, so that a hoisting force is generated between them. It can also be generated.

  In addition, although the case where the pivot attachment mechanism 1 mentioned above is applied to the hinge 100 used with a spectacles frame etc. was demonstrated to the example, it is not limited to this, What has other hinges, for example, a door, a notebook computer, It may be applied to anything such as a trunk case. Moreover, you may apply to the rotation axis | shaft part of the joint of the articulated arm used for a desk stand etc.

  Moreover, in each of the above-described embodiments, the case where the cylindrical elastic portion is inserted into the first through hole has been described as an example. However, the cylindrical elastic portion is inserted into the second through hole or the third through hole. Also good. Also in this case, the pin is inserted into the first through hole, the second through hole, and the third through hole that communicate with each other. Moreover, the cylindrical elastic part may be inserted through a range extending from the first through hole, the second through hole, and / or the third through hole. In this case, the cylindrical elastic portion is formed to have a total length longer than at least the axial length of the first through hole. And by inserting the cylindrical elastic part into the first through hole, the second through hole, and the third through hole that have been communicated in advance, the cylindrical elastic part is connected to the first through hole, the second through hole, and / or It becomes possible to arrange | position in the range over a 3rd through-hole.

DESCRIPTION OF SYMBOLS 1 ... Pivoting mechanism, 10 ... Pin, 12 ... Pin head part, 14 ... Pin axial part, 14a ... Cylindrical part, 14b ... Depression, 15 ... Pin side seat part, 16 ... Engagement part, 18 ... Recessed latching part , 16a, 18a ... ribs, 19 ... stepped parts, 20, 40 ... cylindrical elastic parts, 22, 42 ... trunk parts, 24, 44 ... flange parts, 26 ... locking pieces, 28, 48 ... longitudinal sections, 29 ... Slit, 70, 80 ... Pivoting member, 72, 82 ... Sliding contact part, 74, 84 ... Slit, 76 ... Opening, 78 ... Hollow, 90 ... Shaft part, 92 ... Head part, 94 ... Cylindrical part, 96 ... Screw Part, 98 ... elastic part, 100 ... hinge, 110 ... first bracket, 112 ... first sleeve part, 112A ... first through hole, 114 ... first arm, 116 ... groove part, 120 ... second bracket, 122, 123 ... 2nd sleeve part, 122A ... 2nd through-hole, 123A ... 3rd through-hole, 1 4 ... second arm, 126 ... fitting portion 128 ... sleeve side engagement receiving portion

Claims (5)

A glasses frame pivotally connecting mechanism for pivotally connecting a first member and a second member constituting the glasses frame,
A shaft portion configured to be able to be inserted into a hole formed in the first member, and a hole formed in the second member;
A shaft that is elastically deformable in a radial direction about the axis of the shaft portion at an intermediate position in the axial direction of the shaft portion, and that engages with the shaft portion to restrict axial movement of the shaft portion. An elastic part having a part engaging means,
The elastic part is configured to slidably contact with the inner peripheral surface of at least one of the holes of the first member and the second member while being biased with a predetermined pressing force or more. A pivoting mechanism for eyeglass frames.   2. The eyeglass frame pivoting mechanism according to claim 1, wherein the elastic portion includes a portion interposed in a gap between the first member and the second member.   3. The eyeglass frame pivoting mechanism according to claim 1, wherein the elastic portion is configured to be capable of elastic deformation different from each other at two different positions in the axial direction. 4. . Either one is a shaft member used in a pivoting mechanism for a spectacle frame having a first member and a second member provided with one or more engagement receiving portions,
A shaft portion configured to be able to be inserted into a hole formed in the first member, and a hole formed in the second member;
It has a large-diameter head compared to the shaft part,
The shaft portion is configured to be able to be inserted into an elastic portion that can be elastically deformed in the radial direction about the shaft of the shaft portion at an intermediate position in the axial direction,
The shaft portion, when inserted into the elastic portion, can be locked to the locking piece of the elastic portion, and a locking portion capable of restricting movement of the shaft portion in the removal direction;
A shaft member comprising: one or more engaging portions that engage with the engagement receiving portion. An elastic member used for a pivoting mechanism for an eyeglass frame that is configured to be inserted into a hole drilled in the first member and a hole drilled in the second member and includes a shaft portion having a locking portion. Because
At an intermediate position in the axial direction of the shaft portion, the shaft portion can be elastically deformed in a radial direction about the axis of the shaft portion, and at least one of the first member and the second member has a predetermined pressing force or more A body part that slidably contacts while being energized with,
A portion interposed in a gap between the first member and the second member;
A locking piece capable of locking the locking portion of the shaft portion and restricting movement of the shaft portion in the removal direction;
The elastic member is characterized in that relative rotation with respect to the shaft portion is restricted by the locking piece being locked to the locking portion.

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