JP7079980B2 - Pivot attachment mechanism - Google Patents

Description

The present invention relates to a pivoting mechanism that is easy to assemble to a member.

Conventionally, a hinge structure has been 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 portion and a temple portion of a frame of eyeglasses. The hinge structure forms a female threaded hole in one bracket, a through hole in the other bracket, and a male thread for fastening is screwed into the female threaded hole in one bracket through the through hole in the other bracket. .. The rotating shaft of the hinge structure is carried by the cylindrical portion in the shaft portion of the male screw body.

Repeated rotation of the hinge structure may loosen the male thread. In order to suppress the loosening of the male screw body, for example, a washer (washer) is inserted into the shaft portion of the male screw body.
For example, in addition to the general ring-shaped "flat washer", the washer has protrusions that extend in the radial direction on the inner and outer circumferences, and engages with the members to be fastened and the screw fasteners 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" to prevent loosening of the screw fastener by elastic deformation, Teeth for biting into the fastening surface There is a "toothed washer" or the like provided around the surface (see Non-Patent Document 1).

Further, as an application of this washer, the outer peripheral shape of the washer is set to be a non-circular shape, and the washer is engaged with the concave 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 engaging mechanism that maintains the state of being engaged with each other (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-105797

Japanese Industrial Standard JIS 1251 Spring washer

Since the conventional hinge structure of the eyeglass frame rotates frequently and vibrates and swings greatly during use, the spring washer disclosed in Non-Patent Document 1 can hardly obtain the effect of preventing the male screw body from loosening. In addition, if the male screw body becomes loose, the resistance applied when opening and closing the hinge structure, the so-called lifting force, will decrease, and the hinge will rattle. It was very difficult for me to use.

Further, in recent years, eyeglass frames are required to have a thin frame and an extremely compact hinge structure in order to meet the demands for design improvement and weight reduction. Therefore, for space reasons, 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 hinge structure of the eyeglass frame is a small screw, it is necessary to process one of the brackets with a female screw, which is costly and requires fine screwing work for assembly to the hinge structure. In short, there was a drawback that the workability of assembly was poor.

The present invention has been made by the inventor's diligent research in view of the above problems, and has a structure that eliminates the need for processing of female threads on the bracket and can be easily assembled while making the whole compact. It is an object of the present invention to provide a pivoting mechanism capable of maintaining a stable striking force for a long period of time without causing loosening.

The present invention is a pivoting mechanism that pivotally connects the first member and the second member, and can be inserted into a hole drilled in the first member and a hole drilled in the second member. The shaft portion is provided with an elastic portion that 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, and the elastic portion is a first member and a second member. Among them, it is characterized in that it is configured to be in sliding contact with at least one of them while being urged with a pressing force of a predetermined value or more.

The elastic portion has a portion located in at least one of the first member and the second member, and is configured to be in sliding contact with the inner peripheral surface of the hole while being urged with a pressing force of a predetermined value or more. It is characterized by being done.

The elastic portion has a portion interposed in the gap between the first member and the second member, and is configured to be in sliding contact with the first member and / or the second member while being urged by a pressing force equal to or higher than a predetermined value in the gap. It is characterized by that.

A shaft member having a shaft portion and an elastic member having an elastic portion are provided, and the shaft member and the elastic member are configured as separate bodies.

The shaft portion has a locking portion that can be inserted into the elastic portion and can lock the locking piece of the elastic portion at the time of insertion, and the elastic portion is elastically deformed at the time of insertion of the shaft portion and is a part of the shaft portion. The locking piece is locked to the locking portion, and the movement of the shaft portion in the detachment direction can be restricted.

The shaft portion has one or more engaging portions, and one or more of the first member and the second member is provided with one or more engaging receiving portions into which the engaging portions are engaged so as not to rotate relative to each other. It is characterized by that.

The locking piece of the elastic portion is characterized in that the relative rotation with respect to the shaft portion is restricted by being locked to the locking portion.

It is characterized in that an fitting space that can be fitted by elastically deforming the flange portion of the elastic portion is formed between the first member and the second member.

The shaft portion has a male screw spiral groove forming a thread, and a female screw portion screwed with the male screw spiral groove is formed in a hole of a first member and / or a hole of a second member. ..

The shaft portion and the elastic portion are configured to be rotatable relative to each other with the axis of the shaft portion as a substantially center, and are configured to be in sliding contact with the shaft portion while being urged by a pressing force equal to or higher than a predetermined value by the elastic action of the elastic portion. It is characterized by being done.

The shaft portion has a shaft portion side engaging portion that engages with one of the first member and the second member in a relative non-rotatable manner, and the elastic portion is relative to the other of the first member and the second member. It is characterized by having an elastic portion side engaging portion that engages non-rotatably.

The elastic portion is characterized in that each can be elastically deformed in different directions at two different positions in the axial direction.
In the elastic portion, the inner peripheral surface is in sliding contact with the shaft portion, both ends in the axial direction are in sliding contact with one of the first member and the second member, and the elastic portion rotates integrally with the other of the first member and the second member. The shaft portion is characterized in that it rotates integrally with one of the first member and the second member.

According to the present invention, it is possible to maintain a stable lifting force for a long period of time while having a structure that can be made compact as a whole and can be easily assembled. Furthermore, unlike the hinge structure using conventional screws, it has the effect that rattling due to loosening of screws cannot occur.

It is a figure which shows the hinge which applied the pivoting mechanism which concerns on 1st Embodiment. It is a figure which shows the component which comprises the hinge to which the pivoting mechanism which concerns on 1st Embodiment is applied. It is a side view which shows the pin of the pivoting mechanism. It is a perspective view which shows the tubular elastic part of a pivoting mechanism. It is a figure which shows the tubular elastic part of a pivoting mechanism. It is sectional drawing which shows the hinge which applied the pivoting mechanism. It is a perspective view which shows the tubular elastic part of the pivoting mechanism which concerns on 2nd Embodiment. It is sectional drawing which shows the tubular elastic part of the pivoting mechanism which concerns on 2nd Embodiment. It is a figure which shows the diameter-reduced tubular elastic part. It is a figure which shows the other shape of a flange part. It is sectional drawing which shows the hinge which applied the pivoting mechanism which concerns on 2nd Embodiment. It is a figure which shows stepwise that a locking piece slides in contact with a 1st through hole. It is a figure which shows the example of the concavo-convex shape formed in the pin side seat portion and the fitting portion. It is a figure which shows the pin side seat part which formed the tapered surface. It is a figure which shows the other shape of the tubular elastic part. It is a perspective view which shows the spiral leaf spring. It is a figure which shows an example of a pin type pivoting member. It is a figure which shows another example of a pin type pivoting member. It is sectional drawing which shows the pivoting mechanism by another structure. It is a figure which shows the other pin type pivoting member. It is a figure which shows the tubular elastic part which has a constriction in the middle part in the axial direction. It is sectional drawing which shows the hinge which applied the pivoting mechanism which provided the tubular elastic part with a constriction.

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

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

FIG. 3 is a diagram showing a pin 10 of the pivoting mechanism 1. The pin 10 includes a pin head 12 and a pin shaft portion 14. The pin head 12 is not particularly limited, but here, it has a circular outer shape, is located on one end side of the pin shaft portion 14, and extends radially from the pin shaft portion 14. The pin side seat portion 15 is formed on the pin shaft portion 14 side of the pin head 12, specifically, on the portion corresponding to the lower portion to the base.

The pin shaft portion 14 is formed in a cylindrical (or cylindrical) cylindrical portion 14a, an engaging portion 16 arranged on the outer peripheral surface of the cylindrical portion 14a on the pin head 12 side, and a recess 14b provided in the cylindrical portion 14a. It has a concave locking portion 18 formed in. The recess 14b is formed over the entire circumference of the cylindrical portion 14a between the intermediate position and the tip of the cylindrical portion 14a.

The engaging portion 16 has a plurality of ribs 16a protruding radially from the outer peripheral surface of the cylindrical portion 14a, and the ribs 16a are arranged along the circumferential direction at predetermined intervals. The tip of the rib 16a is located closer to the cylindrical portion 14a than the outer edge portion of the pin head 12. That is, the rib 16a is formed so that the tip thereof does not protrude outward from the outer edge portion of the pin head 12.

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

4A and 4B show a perspective view showing a tubular elastic portion 20 of the pivoting mechanism 1, FIG. 5 shows a tubular elastic portion 20 of the pivoting mechanism 1, FIG. 4A is a side view, and FIG. 5B is a cross-sectional view. Is. The tubular elastic portion 20 has a body portion 22, a flange portion 24, and a locking piece 26 formed at the other end of the body portion 22.

The body portion 22 is hollow and is formed in a substantially barrel shape whose outer shape bulges outward in the middle portion. Further, the body portion 22 has a vertical section 28 extending in the axial direction of the wall surface (vertical direction in FIG. 5), and the vertical section 28 forms a gap extending in the entire axial direction in a part of the side wall. Will be done. Further, a plurality of slits 29 extending from the other end (lower end in FIG. 5) to the middle position along the axial direction are formed in the body portion 22. The longitudinal portion 28 and the slit 29 are formed at a predetermined interval over the entire circumference of the body portion 22, and here, they are formed at equal intervals with a relative phase difference of 60 ° in the circumferential direction. The number of slits 29 is not particularly limited and may be singular. Further, the distance between the vertical section portion 28 and the slit 29 is not limited to an equal distance, and the distance between the vertical portion 28 and the slit 29 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 between the longitudinal portions 28 can be expanded and the outer circumference can be elastically deformed so as to expand the diameter. Will be done. That is, it is preferable that the hollow of the body portion 22 is set so that the size of the inner diameter is smaller than the size of the outer diameter of the pin 10 and the body portion 22 can be deformed in the elastic region.

The flange portion 24 is formed so as to project 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 to have different axial positions on the tip end side and the base end side. There is. Here, the flange portion 24 is not particularly limited, but has a shape in which the tip end side is inclined downward in the axial direction with respect to the proximal end side.

The flange portion 24 is formed so that it can be fitted into the space formed between the first bracket 110 and the second bracket 120 while being elastically deformed. Specifically, the flange portion 24 fits into 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 are interposed. By urging to, the backlash between the first bracket 110 and the second bracket 120 is suppressed. Therefore, it is preferable that the flange portion 24 is 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 pieces 26 have a tapered shape, and a plurality of locking pieces 26 are formed on the entire circumference at the other end of the body portion 22. Further, the locking piece 26 has a shape in which the tip end portion is curved so as to be closer to the central axis of the tubular elastic portion 20 than the base end portion. Further, the plurality of locking pieces 26 are not particularly limited, but are formed here so as to be arranged at equal intervals.

Next, returning to FIG. 2, the first bracket 110 and the second bracket 120 of the hinge 100 to which the pivot 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 thereto, and has a tubular elasticity in the first through hole 112A drilled in the first sleeve portion 112. The portion 20 is fitted. Further, a groove 116 into which the flange 24 is fitted is formed around the first through hole 112A. The first through hole 112A is formed so that the size of the inner circumference abuts on the outer circumference of the elastically deformed body portion 22. That is, the size of the inner circumference of the first through hole 112A is set so as to be in sliding contact with the outer peripheral surface of the body portion 22 expanded by the pin 10. The body portion 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 to allow the pin 10 to be inserted, and has a pair of second sleeve portions 122, 123 which are arranged at a predetermined interval with respect to the axial direction of the inserted pin 10. , It has a second arm (base) 124 continuous with it. A second through hole 122A is formed in the second sleeve portion 122, and a third through hole 123A is formed in the second sleeve 123. 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 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 12 abuts. The joint 126 is formed.

The first sleeve portion 112 is arranged between the second sleeve portions 122 and 123. At this time, since the flange portion 24 of the tubular elastic portion 20 that fits into the first through hole 112A fits into the groove portion 116, it is sandwiched between the first sleeve portion 112 and the second sleeve portion 122.

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

The assembly of the hinge 100 will be described below. First, the tubular elastic portion 20 is fitted into the first through hole 112A of the first bracket 110, and the first bracket 110 and the second bracket 120 are combined. As a result, 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 arranged 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 to exert an urging force in the axial direction to prevent rattling between the first bracket 110 and the second bracket 120.

Next, the pin 10 is inserted into the coaxial first through hole 112A, second through hole 122A, and third through hole 123A. Here, since the tubular elastic portion 20 is fitted into the first through hole 112A, the pin 10 is inserted into the first through hole 112A via the tubular elastic portion 20, and the tip portion inserts the tubular elastic portion 20. It passes through and is inserted into the third through hole 123A.

FIG. 6 is a cross-sectional view taken along the line AA of FIG. 1B, and is a cross-sectional view showing a hinge 100 to which the pivoting mechanism 1 is applied. When the pin 10 is inserted, the body portion 22 of the tubular elastic portion 20 is located 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 is outward in the radial direction. Elastically deforms to spread. Therefore, the body portion 22 is elastically deformed so that the gap of the longitudinal portion 28 is expanded around the axis of the pin 10, and the outer peripheral surface of the body portion 22 pushes the inner peripheral surface of the first through hole 112A by a predetermined value or more. Sliding contact while urging with pressure.

Further, when the tip portion of the pin 10 enters the space surrounded by the plurality of locking pieces 26, the pin 10 presses the locking piece 26 and elastically deforms it. The locking piece 26 is elastically deformed so as to bend outward in the radial direction of the tubular elastic portion 20, and when the pin 10 further enters, the locking piece 26 fits into the recess 14b 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, when the pin 10 is moved in the withdrawal direction (upward direction shown in FIG. 6), the locking piece 26 is stepped on the concave locking portion 18. It abuts on the portion 19. At this time, an external force that deforms the body portion 22 toward the outside is applied, but the deformation is restricted because it comes into contact with the inner peripheral surface of the first through hole 112A. Therefore, the locking piece 26 cannot get over the stepped portion 19, and the pin 10 cannot be removed from the tubular elastic portion 20. That is, the pin 10 is restricted from moving in the detachment direction by the tubular elastic portion 20.

Further, with the insertion of the pin 10, the pin head 12 fits into the fitting portion 126. Further, each rib 16a of the engaging portion 16 enters each groove of the sleeve-side engaging receiving portion 128, and the engaging portion 16 engages with the sleeve-side engaging receiving portion 128. This completes the assembly of the hinge 100.

According to the hinge 100 assembled as described above, the pin 10 and the second bracket 120 are non-rotatably engaged with each other by fitting the rib 16a of the engaging portion 16 into the groove of the sleeve-side engaging receiving portion 128. do. Further, the pin 10 and the tubular elastic portion 20 regulate their relative rotation with each other by inserting the locking piece 26 between the ribs 18a of the concave locking portion 18. Therefore, the pin 10, the tubular elastic portion 20, and the second bracket 120 are combined so as to rotate integrally with the center of the axis.

On the other hand, the first bracket 110 is in sliding contact with the tubular elastic portion 20 and the second bracket 120. Specifically, the first bracket 110 is slidably contacted with the inner peripheral surface of the first through hole 112A 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 sleeve portion 112 is arranged with the first sleeve portion 112 with respect to the pair of second sleeve portions 122 without any gap. Therefore, it is in sliding contact with the second bracket 120.

As described above, since the pivoting mechanism 1 is composed of the pin 10 and the tubular elastic portion 20, it does not require female threading or the like, is easy to manufacture, and can be easily miniaturized. Further, if such a pivoting mechanism 1 is applied, the entire hinge can be made compact. Further, by always sliding the tubular elastic portion 20 and the second bracket 120 with respect to the first bracket 110, it is possible to maintain a stable striking force for a long period of time.

Further, the hinge 100 can be assembled simply by combining the first bracket 110 into which the tubular elastic portion 20 is fitted with the second bracket 120 and inserting the pin 10 into the first through hole 112A and the second through hole 122A. Assembling can be done easily without the need for fine screwing work.

Next, the pivoting mechanism 1 according to the second embodiment will be described. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. FIG. 7 is a perspective view showing the tubular elastic portion 40 of the pivoting mechanism 1 according to the second embodiment, and FIG. 8 is a cross-sectional view showing the tubular elastic portion 40 of the pivoting mechanism 1 according to the second embodiment. be. The tubular elastic portion 40 is fitted into the first through hole 112A and has a body portion 42, a flange portion 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 (three in this case) slits 29 and one longitudinal portion 48 are formed in the body portion 42, and the longitudinal portion 48 is formed with a wider gap than the longitudinal portion 28 in the first embodiment.

Therefore, when the body portion 42 is inserted into the first through hole 112A, the body portion 42 is pressed against the inner peripheral surface of the first through hole 112A and elastically deforms so as to reduce the diameter. Further, the longitudinal portion 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 diagram showing a tubular elastic portion 40 having a reduced diameter. In the present embodiment, when the tubular elastic portion 40 is fitted into the first through hole 112A, the tubular elastic portion 40 has a longitudinal portion 48 as shown in FIG. Elastically deforms so that a gap remains. The vertical section 48 is not limited to a size that leaves a gap in the first through hole 112A, and the gap is just closed when the gap is inserted into the first through hole 112A, that is, the vertical section portion 48 is formed. It may be formed to a size in which the two end portions are joined together.

The flange portion 44 is formed so as to project outward in the radial direction of the body portion 42 and to have different axial positions on 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 tip end side is inclined upward in the axial direction with respect to the proximal end side. As a result, the flange portion 44 can be elastically deformed and fitted into the space formed between the first bracket 110 and the second bracket 120. Further, the thickness of the flange portion 44 is set to a thickness capable of suppressing rattling between the first bracket 110 and the second bracket 120, similarly to the flange portion 24 of the first embodiment.

The flange portion 44 may have a curved shape from the proximal end side to the distal end side, and the axial position between the distal end side and the proximal end side of the flange portion 44 is not limited to the above position and is not limited to the above position. The side may be located below the proximal side. Further, the flange portion 44 has a wavy curved shape, for example, as shown in FIG. 10, the flange portion 44 is curved in a wavy shape so that the tip side is located above the proximal end side and the intermediate portion is located below the proximal end side. It may be in shape. Of course, the shape of the wave is not particularly limited, and the tip side may be located below the proximal end side and the intermediate portion may be located above the proximal end side. Further, the number of waves is not limited to one, and may be a plurality.

The assembly of the hinge 100 will be described below. First, the tubular elastic portion 40 is fitted into the first through hole 112A of the first bracket 110. Here, since the outer diameter of the body portion 42 is larger than the inner diameter of the first through hole 112A, the body portion 42 elastically deforms 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. As a result, 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 arranged between the pair of second sleeve portions 122 and 123.

The flange portion 44 applies an axial urging 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 by one of the second sleeve portions 122 to be elastically deformed, and the first bracket 110 is urged in the axial direction. That is, it urges the other second sleeve 123 side.

Next, the pin 10 is inserted into the coaxial first through hole 112A, the second through hole 122A, and the third through hole 123A. Here, since the tubular elastic portion 40 is fitted into the first through hole 112A, the pin 10 is inserted into the first through hole 112A via the tubular elastic portion 40, and the tip portion passes through the tubular elastic portion 40. It passes through and is inserted into the third through hole 123A.

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

Further, with the insertion of the pin 10, the pin head 12 fits into the fitting portion 126. Further, each rib 16a of the engaging portion 16 enters each groove of the sleeve-side engaging receiving portion 128, and the engaging portion 16 engages with the sleeve-side engaging receiving portion 128. This completes the assembly of the hinge 100.

According to the hinge 100 assembled as described above, the pin 10 and the second bracket 120 are non-rotatably engaged with each other by fitting the rib 16a of the engaging portion 16 into the groove of the sleeve-side engaging receiving portion 128. do. Further, the pin 10 and the tubular elastic portion 40 regulate relative rotation with each other by fitting the locking piece 26 between the ribs 18a of the concave locking portion 18. Therefore, the pin 10, the tubular elastic portion 40, and the second bracket 120 are combined so as to rotate integrally with the center of the axis.

On the other hand, the first bracket 110 is in sliding contact with the tubular elastic portion 40 and the second bracket 120. Specifically, the first bracket 110 is slidably contacted with the inner peripheral surface of the first through hole 112A being urged from the body portion 42. Further, since the flange portion 44 is elastically deformed and intervened 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, the body portion 42 of the tubular elastic portion 40 has a substantially barrel-shaped body according to the first embodiment because the outer peripheral surface parallel to the axial direction is in sliding contact with the inner peripheral surface of the first through hole 112A in substantially the entire area. Compared with the portion 22, the sliding area to the first through hole 112A is increased and the surface pressure can be dispersed and urged, so that a stable lifting force can be maintained for a longer period of time.

Further, since the flange portion 44 is formed so as to have different positions in the axial direction between the tip portion and the base 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 urged toward the second bracket 120. As a result, the frictional force acting on the contact surface between the first bracket 110 and the second bracket 120 is increased, and the striking force can be maintained for a longer period of time.

In the second embodiment, the tubular portion 42 is slidably contacted with the inner peripheral surface of the first through hole 112A, but the locking piece 26 may be slidably contacted. 12A and 12B are views showing stepwise sliding contact of the locking piece with the first through hole, FIG. 12A shows the case where the tubular elastic portion 40 is fitted into the first through hole 112A, and FIG. 12B shows the case where the tubular elastic portion 40 is fitted into the first through hole 112A. The tip of the pin 10 enters the tubular elastic portion 40, and (c) indicates when the locking piece 26 abuts on the inner peripheral surface of the first through hole 112A. Here, in order to bring the locking piece 26 into sliding contact with the first through hole 112A, the depth of the recess 14b is formed to be shallower than that of the recess 14b of the second embodiment. Further, the tubular elastic portion 40 is previously fitted into the first through hole 112A as shown in FIG. 12 (a).

Next, the pin 10 is inserted into the coaxial first through hole 112A, second through hole 122A, and third through hole 123A. Here, when the tip of the pin 10 enters the space surrounded by the locking piece 26, the locking piece 26 abuts on the pin 10 and expands in diameter as shown in FIG. 12 (b). , Elastically deforms outward.

Then, when the tip end portion of the pin 10 is fitted 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. 12 (c). Here, since the recess 14b is formed shallower than the recess 14b of the second embodiment, the locking piece 26 has a larger diameter than that of the second embodiment and engages with the concave locking portion 18. Will be 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 portion to the middle portion, the sliding area of the tubular elastic portion 40 to the first through hole 112A increases and the surface pressure is dispersed. Since it is possible to urge while doing so, it is possible to maintain a stable striking force for a longer period of time.

Further, the tubular elastic portion 40 may be elastically deformed in the circumferential direction in the body portion 42, and may be elastically deformed in the radial direction in the locking piece 26. As described above, when the pin 10 is fitted in the first through hole 112A, the tubular elastic portion 40 can be elastically deformed in two different positions in the axial direction in different modes. As a result, the body portion 42 can function as a sliding contact portion that is in sliding contact with the first through hole 112A, and the locking piece 26 mainly prevents the pin 10 from coming off in the axial direction and engages the tubular elastic portion 40 with the pin 10. It is possible to function as a sliding contact surface that is in sliding contact with the first through hole 112A as an auxiliary function.

In each of the above embodiments, in order to engage the pin 10 with the second bracket 120 so as not to rotate relative to each other, an engaging portion 16 is formed on the pin shaft portion 14 and is formed on the inner peripheral surface of the second through hole 122A. Although the case where the sleeve-side engaging receiving portion 128 is formed has been described as an example, the positions where the engaging portion 16 and the sleeve-side engaging receiving portion 128 are formed are not particularly limited, and for example, the pin head 12 is formed. The engaging portion 16 may be formed on the side surface of the pin head 12, and the sleeve-side engaging receiving portion 128 may be formed on the inner peripheral surface of the fitting portion 126 in contact with 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 engaging receiving portion 128 may be formed on the inner peripheral surface of the third through hole 123A through which the tip portion is inserted. Further, the engaging portions 16 are formed at a plurality of positions on the pin 10, and the sleeve-side engaging receiving portions 128 are provided in the second through hole 122A and / or the third through hole 123A corresponding to the positions where the engaging portions 16 are formed. It may be formed.

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

Further, the surface of the pin side seat portion 15 is provided with a plurality of irregularities protruding in the axial direction, and the bottom surface of the fitting portion 126 is also provided with a plurality of irregularities into which the irregularities of the pin side seat portion 15 are fitted so that the irregularities of each other are fitted. By engaging the pins 10, the pins 10 may be engaged with the second bracket 120 so as not to rotate relative to each other. The shape of the unevenness formed on the pin side seat portion 15 and the fitting portion 126 is not particularly limited, and for example, the saw blade shape as shown in FIG. 13A and the unevenness shown in FIG. 13B are formed. Any shape may be used, such as a chevron shape having an inclined surface, a corrugated shape having an uneven surface shown in FIG. 13C, and the like. Further, the direction in which the unevenness is formed is not particularly limited, and for example, the unevenness may be formed in the radial direction, or the unevenness may be formed in a spiral shape (spiral shape). Further, it may be a so-called embossed shape in which a plurality of fine irregularities are formed on a flat surface.

Further, in each of the above-described embodiments, the seat surface of the pin side seat portion 15 is a surface extending in a direction substantially orthogonal to the axial direction, but the present invention is not limited to this, and the direction is orthogonal to the axial direction. It may be a tapered surface that is inclined with respect to the surface. Specifically, as shown in FIG. 14, a tapered surface 15a inclined in the radial direction is formed on the pin side seat portion 15. Since the tapered surface 15a is inclined so that the center side approaches the tip portion, the result is a conical shape that is convex toward the tip 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 abuts on the tapered surface 15a. Further, the tapered surface 15a and the fitting portion 126 may be engaged to engage the pin 10 with respect to the second bracket 120 so as not to rotate relative to each other. For example, the engaging portion 16 may be formed on the tapered surface 15a, and the sleeve-side engaging receiving portion 128 may be formed on the bottom surface of the fitting portion 126.

The tubular elastic portion is not limited to the one composed of a body portion, a flange portion, and a plurality of locking pieces, and can be elastically deformed at least in the first through hole 112A. The shape may be any shape that urges the inner peripheral surface of the through hole 112A. For example, as shown in FIG. 15A, a tubular elastic portion 50 having a tapered outer peripheral surface 52 that is inclined so as to reduce the diameter from one end to the other end may be used. Further, as shown in FIG. 15B, a tubular 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 reduces in diameter so that the lower end portion is narrowed from the middle portion may be used. .. The tubular elastic portions 50 and 60 are formed with a plurality of notches 54 at one ends of the outer peripheral surfaces 52 and 62 so that the diameters can be elastically reduced or expanded.

Further, instead of the tubular elastic portion, a spiral leaf spring 130 wound in a spiral shape as shown in FIG. 16 may be used. In this case, in the first through hole 112A, the pin 10 is fitted into the central portion of the spiral of the spiral leaf spring 130. The spiral leaf spring 130 is in sliding contact with the inner circumference 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 pivoting mechanism is configured by the pin and the tubular elastic portion, but the pivoting mechanism may be configured by one member. That is, even if the first bracket 110 and the second bracket 120 are pivotally connected by fitting the pin-shaped pivoting member as the pivoting mechanism into the first through hole 112A and the second through hole 122A. good. Here, FIG. 17 shows an example of a pin-shaped pivoting member 70, (A) is a perspective view, and (B) is a sectional view. The pivot member 70 shown in FIG. 17A has a sliding contact portion 72 in which a portion of the outer peripheral surface 70a that is in sliding contact with the inner peripheral surface of the first through hole 112A is bulged, and the other end (FIG. 17A). One or more slits 74 extending from the lower end in the indicated direction) 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. 17 (B). It is also preferable to form a cavity 78. In this case, the sliding contact portion 72 may be elastically deformed so as to narrow the gap between the slits 74.

The shape of the pin-shaped pivot member 70 is not particularly limited, and may be, for example, the shape shown in FIG. That is, instead of the sliding contact portion 72, a sliding contact portion 82 fixed to the other end side and opened in an inverted umbrella shape toward the axial center portion side of the outer peripheral surface 70a with the other end side as the top is formed. Moreover, the sliding contact portion 82 may have one or more slits 84. In this case, the sliding contact portion 82 may be elastically deformed so as to narrow the gap of the slit 84.

If the pivoting member 70 as described above is applied, the entire hinge can be made compact as in the case where the pivoting mechanism 1 of each embodiment described above is applied, and the hinge is slidably contacted with the first bracket 110. By sliding the portion, a stable hinge force can be maintained for a long period of time. Further, the assembly of the hinge 100 is completed only 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, the assembly can be performed more easily as compared with the case where the pivot mechanism 1 is applied.

Further, the shape of the body of the tubular elastic portion is not limited to the above, and for example, the outer shape may have a surface substantially parallel to the axial direction, or may have a constriction in the middle portion along the axial direction. It may have a curved shape. Further, the body portion is not limited to a cylindrical shape, and may be a cylindrical shape such as a square cylinder or an elliptical cylinder.

Further, the pivoting mechanism 1 may be composed of a shaft portion having a male screw spiral groove forming a thread and an elastic portion arranged so as to surround the shaft portion. 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 92 is radially expanded from the cylindrical portion 94, has a plus groove formed on the end face, and can be rotated by engaging with the plus tool. By making the outer shape of the head 92 a polygon or the like, the outer circumference may be engaged with a spanner to be 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.

Further, a contact surface 93 formed in a direction orthogonal to the axial direction is formed between the head portion 92 and the cylindrical portion 94, and the contact surface 93 presses the elastic portion 98 along the axial direction. And make surface contact so that they can be slidably contacted. The threaded portion 96 has a male threaded spiral groove forming a plurality of threads.

The elastic portion 98 is a rubber member such as natural rubber or synthetic rubber, or an elastically deformable tubular member such as the body portions 22, 42, etc., and the first through hole surrounds the cylindrical portion 94. In 112A, it is interposed between the first through hole 112A and the shaft portion 90. In order to prevent the elastic portion 98 from directly sliding on the inner peripheral surface of the first through hole 112A, sliding that can exhibit an appropriate sliding condition integrally or separately on the outer peripheral surface of the elastic portion 98. A sliding surface having properties may be provided. Specifically, as the sliding surface integrated with the elastic portion 98, it is preferable to apply a coating for improving wear resistance to the outer peripheral surface of the elastic portion 98. Further, as a sliding surface separate from the elastic portion 98, a substantially annular ring member may be installed on the outer peripheral surface of the elastic portion 98. At this time, the ring member preferably has a shape that does not hinder the elastic deformation of the elastic portion 98, for example, a C-shaped ring member.

When the pivoting mechanism 1 including the shaft portion 90 and the elastic portion 98 is applied, the size of the inner circumference of the second through hole 122A is such that the contact surface 93 and the cylindrical portion 94 can pass through. It has a size that regulates the movement of the head 92. The third through hole 123A has a female threaded spiral thread 150 screwed with the male threaded spiral groove of the threaded portion 96.

In the above configuration, the elastic portion 98 is previously inserted through the first through hole 112A, and the first bracket 110 and the second through hole 112A and the second through hole 123A are coaxial with each other. Combine with bracket 120. Then, as shown in FIG. 19, the shaft portion 90 is fitted to the first through hole 112A, the second through hole 122A, and the third through hole 123A and rotated to fasten the shaft portion 90 to the second bracket 120. At the same time, the axial downward force indicated by the 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 sandwiched between the contact surface 93 and the second bracket 120 and compressed, and elastically deforms outward in the radial direction indicated by the arrow b to urge the inner peripheral surface of the first through hole 112A. While sliding.

The elastic portion 98 may be attached to the cylindrical portion 94 of the shaft portion 90 in advance, and then inserted into the hole in which the second through hole 122A and the first through hole 112A are coaxialized.

Even if 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 pivoting mechanism 1 of each of the above-described embodiments 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, and a striking force is applied between them. It is also possible to generate it.

Here, FIG. 20 is a diagram showing another pin-type pivoting member 160. The pivot member 160 has a head portion 162, a sliding contact portion 164, and a tip portion 166. On the outer peripheral surface of the head 162, a plurality of head-side engaging portions 162a that engage with the sleeve-side engaging receiving portion 128 formed on the inner peripheral surface of the second through hole 122A are formed. That is, the plurality of head-side engaging portions 162a extend in the axial direction and are arranged at predetermined intervals along the circumferential direction on the outer peripheral surface of the head 162.

The sliding contact portion 164 is configured to be able to fit into the first through hole 112A, and is formed so as to be in sliding contact with the inner peripheral surface of the first through hole 112A. The tip portion 166 has a tip side engaging portion 166a that engages with the inner peripheral surface of the third through hole 123A. The tip-side engaging portion 166a has a knurled shape, but is not limited to this. For example, when the inner peripheral surface of the third through hole 123A has a plurality of grooves extending in the axial direction substantially similar to the sleeve-side engaging receiving portion 128, the tip-side engaging portion 166a is formed in the groove. It may be anything, such as one consisting of a plurality of ridges to be engaged.

Further, the pivot member 160 is formed with a longitudinal portion 168 along the axial direction. The longitudinal portion 168 is formed in an engraved shape in which a plurality of peaks and valleys are alternately arranged along the axial direction. Of course, the longitudinal portion 168 may be formed in a straight line or in a wavy shape in which peaks and valleys are alternately arranged. By forming the longitudinal portion in this way, the pivoting member 160 can be elastically deformed or plastically deformed so that the diameter can be reduced or expanded.

Here, the pivot member 160 is elastically deformed so as to reduce its diameter, that is, elastically deforms so as to narrow the gap of the longitudinal portion 168, and is fitted into the first through hole 112A, the second through hole 122A, and the third through hole 123A. It is configured to do. As a method of such a configuration, the pivoting member 160 may be formed in a substantially cylindrical shape. That is, the pivot member 160 is formed so as to form a substantially flat plate shape, and the pivot member 160 is rolled so as to form a cylindrical shape. For example, at this time, a thickness difference, a notch, a slit, or the like that define each other may be provided in the region forming the head 162, the sliding contact portion 164, and the tip portion 166.

Further, in the pivot member 160, the head 162 is press-fitted into the second through hole 122A and / or the tip portion 166 is press-fitted into the third through hole 123A in order to prevent the first bracket 110 and the second bracket 120 from coming off. It is configured to be press-fitted. That is, the outer diameter of the head 162 is equal to or greater than the inner diameter of the second through hole 122A, and / or the outer diameter of the tip portion 166 is equal to or greater than the inner diameter of the third through hole 123A.

FIG. 21 is a diagram showing a tubular elastic portion having a constriction in the middle portion, and shows a tubular elastic portion 170 having an outer diameter and an inner diameter having different diameters along the axial direction so that the midway portion in the axial direction is constricted. .. The tubular elastic portion 170 has a hollow body portion 172 and a rotation restricting end portion 174 that regulates rotation along the circumferential direction.

The body portion 172 has a constriction so that the outer diameter and the inner diameter are the largest at one end or both ends and the smallest at the center. That is, the outer diameter and inner diameter of the tubular elastic portion 170 are set so as to be the smallest in the central portion in the axial direction, gradually increase in the axial direction from the central portion, and the largest diameter at one end or both ends. To. Further, the body portion 172 has a vertical section portion 176 in which the wall surface is cut in the axial direction (longitudinal direction). A gap extending in the entire axial direction is formed in a part of the wall surface of the body portion 172 by the longitudinal portion 176. The number of constrictions in the body portion 172 is not particularly limited and may be plural.

The rotation-restricted end portion 174 has a wavy shape over the entire end surface extending in the circumferential direction, and is formed at both ends in the axial direction. That is, the rotation-restricted end portion 174 is formed of a plurality of irregularities along the circumferential direction on the end surface of the body portion 172. Further, the tip of the rotation restricting end portion 174 is inclined outward with respect to the axial direction of the tubular elastic portion 160. Further, the upper rotation restricting end portion 174 shown in FIG. 20 can be fitted into the space formed between the first bracket 110 and the second bracket 120 while being elastically deformed, similarly to the flange portion 44 described above. For example, the rotation-restricted end 174 is elastically deformed so that its tip is orthogonal to the axial direction, and fits into the space between the first bracket 110 and the second bracket 120.

The lower rotation-restricted end portion 174 may be elastically deformed so that the tip thereof is orthogonal to the axial direction, as in the upper rotation-restricted end portion 174. Further, the tip of the rotation restricting end portion 174 does not necessarily have to be elastically deformed so as to be orthogonal to the axial direction.

FIG. 22 is a cross-sectional view showing a hinge 100 to which a pivoting mechanism including a tubular elastic portion 170 is applied. When the tubular elastic portion 170 is located between the second sleeves 122 and 123 shown in FIG. 21, the second sleeves 122 and 123 are slidably contacted while applying a pressing force for urging the second sleeves 122 and 123 in the axial direction. 174 is in contact with the inner peripheral surface of the first through hole 112A, and preferably the tip surface of each rotation restriction end portion 174 is substantially in contact with the inner peripheral surface of the first through hole 112A. Each end portion 174 functions as a rotation stopper that suppresses relative rotation with respect to the first bracket 110 by abutting a plurality of irregularities on the inner peripheral surface of the first through hole 112A.

When the pin 180 is inserted, the tubular elastic portion 170 elastically deforms into an enlarged diameter state in which the gap due to the longitudinal portion 176 expands, and presses the outer peripheral surface of the pin 180. That is, here, a pin 180 having an outer diameter larger than the inner diameter of the central portion, which can expand the central portion having the smallest diameter of the tubular elastic portion 170, is inserted. Here, the pin 180 has a fitting recess 182 having a concave cross section formed over the entire circumference of the outer peripheral surface instead of the recess 14b with respect to the pin 10 described above. The components of the pin 180 similar to those of the pin 10 are designated by the same reference numerals and the description thereof will be omitted.

The fitting recess 182 is formed at a position facing the central portion of the body portion 172 so that the central portion can be fitted and can be slidably contacted with the inner peripheral surface of the body portion 172. Therefore, the positions of the tubular elastic portion 170 and the pin 180 do not change relative to each other in the axial direction.

When the tubular elastic portion 170 and the pin 180 are applied to the hinge 100, the tubular elastic portion 170 rotates relative to the first bracket 110 because the end portion 174 abuts on the inner peripheral surface of the first through hole 112A. It becomes impossible and can rotate integrally with the first bracket 110. Further, the end portion of the tubular elastic portion 170 in the axial direction is in sliding contact with the second sleeves 122 and 123.

On the other hand, the pin 180 is in a state where the engaging portion 16 engages with the sleeve-side engaging receiving portion 128 so that the pin 180 cannot rotate relative to the second bracket 120 and can rotate integrally with the second bracket 120.

Therefore, both ends of the tubular elastic portion 170 are in sliding contact with the second sleeves 122 and 123, and the central portion is in sliding contact with the pin 180, so that a lifting force can be generated. Moreover, since the tubular elastic portion 170 presses the outer peripheral surface of the pin 180, the state of pressing the pin 180 is maintained even if it is worn due to the sliding contact with the pin 180, so that a stable striking force for a long period of time is maintained. Can be maintained.

The case where the above-mentioned pivoting mechanism 1 is applied to a hinge 100 used in a spectacle frame or the like has been described as an example, but the present invention is not limited to this, and a device having another hinge, for example, a door, a notebook computer, or the like. It may be applied to anything such as a trunk case. Further, it may be applied to a rotation shaft portion of a joint of an articulated arm used for a desk stand or the like.

Further, in each of the above-described embodiments, the case where the tubular elastic portion is inserted into the first through hole has been described as an example, but the tubular elastic portion is inserted into the second through hole or the third through hole. May be 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. Further, the tubular elastic portion may be inserted in a range extending over the first through hole, the second through hole and / or the third through hole. In this case, the tubular elastic portion is formed to have a total length longer than at least the axial length of the first through hole. Then, by inserting the tubular elastic portion into the first through hole, the second through hole, and the third through hole that have been communicated with each other in advance, the tubular elastic portion can be made into the first through hole, the second through hole, and / or. It can be arranged in a range extending over the third through hole.

1 ... pivot mechanism, 10 ... pin, 12 ... pin head, 14 ... pin shaft part, 14a ... cylindrical part, 14b ... recess, 15 ... pin side seat part, 16 ... engaging part, 18 ... concave locking part , 16a, 18a ... Ribs, 19 ... Steps, 20, 40 ... Cylindrical elastic parts, 22, 42 ... Body parts, 24, 44 ... Flange parts, 26 ... Locking pieces, 28, 48 ... Longitudinal parts, 29 ... Slit, 70, 80 ... pivot member, 72, 82 ... sliding contact part, 74, 84 ... slit, 76 ... opening, 78 ... cavity, 90 ... shaft part, 92 ... head, 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 ... second sleeve portion, 122A ... second through hole, 123A ... third through hole, 124 ... second arm, 126 ... fitting portion, 128 ... sleeve side engagement receiving portion

Claims (15)

It is a pivoting mechanism that pivotally connects the first member and the second member.
A hole drilled in the first member and a shaft portion configured to be inserted into the hole drilled in the second member.
At an intermediate position in the axial direction of the shaft portion, an elastic portion capable of elastically deforming in the radial direction with the axis of the shaft portion as a substantially center is provided.
The elastic portion is configured to be in sliding contact with at least one of the first member and the second member while being urged with a predetermined or higher pressing force .
The elastic portion is a pivoting mechanism characterized by having a portion interposed in a gap between the first member and the second member . It is a pivoting mechanism that pivotally connects the first member and the second member.
It is configured so that it can be inserted into the hole drilled in the first member and the hole drilled in the second member. With the shaft part
At the intermediate position in the axial direction of the shaft portion, the bullet is radially centered on the axis of the shaft portion. Equipped with an elastic part that can be sexually deformed,
The elastic portion is more than a predetermined value with respect to at least one of the first member and the second member. It is configured to be in sliding contact while being urged by the pressing pressure of
The shaft portion can be inserted into the elastic portion, and the locking piece of the elastic portion can be locked at the time of insertion. Has a stop,
The elastic portion elastically deforms when the shaft portion is inserted to surround a part of the shaft portion, and the locking piece. Is locked to the locking portion, and is characterized in that the movement of the shaft portion in the withdrawal direction can be restricted. mechanism. It is a pivoting mechanism that pivotally connects the first member and the second member.
It is configured so that it can be inserted into the hole drilled in the first member and the hole drilled in the second member. With the shaft part
At the intermediate position in the axial direction of the shaft portion, the bullet is radially centered on the axis of the shaft portion. Equipped with an elastic part that can be sexually deformed,
The elastic portion is more than a predetermined value with respect to at least one of the first member and the second member. It is configured to be in sliding contact while being urged by the pressing pressure of
The shaft portion has one or more engaging portions and has one or more engaging portions.
The engaging portion is non-rotatably engaged with either the first member or the second member. A pivoting mechanism characterized in that one or more engaging receiving portions are provided. It is a pivoting mechanism that pivotally connects the first member and the second member.
It is configured so that it can be inserted into the hole drilled in the first member and the hole drilled in the second member. With the shaft part
At the intermediate position in the axial direction of the shaft portion, the bullet is radially centered on the axis of the shaft portion. Equipped with an elastic part that can be sexually deformed,
The elastic portion is more than a predetermined value with respect to at least one of the first member and the second member. It is configured to be in sliding contact while being urged by the pressing pressure of
The flange portion of the elastic portion is elastically deformed and fitted between the first member and the second member. A pivoting mechanism characterized by forming a possible fitting space. The elastic portion has a portion of the first member and the second member located in at least one of the holes, and is urged against the inner peripheral surface of the hole with a pressing force of a predetermined value or more. The pivoting mechanism according to any one of claims 1 to 4, wherein the mechanism is configured to be in sliding contact. The elastic portion has a portion interposed in the gap between the first member and the second member , and the first member and / or the second member is urged by a pressing force equal to or higher than a predetermined value in the gap. The pivoting mechanism according to any one of claims 1 to 5, which is configured to be in sliding contact. The invention according to any one of claims 1 to 6 , wherein the shaft member having the shaft portion and the elastic member having the elastic portion are provided, and the shaft member and the elastic member are configured as separate bodies. The described pivot member. The shaft portion has a locking portion that can be inserted into the elastic portion and can lock the locking piece of the elastic portion at the time of insertion.
The elastic portion elastically deforms when the shaft portion is inserted to surround a part of the shaft portion, and the locking piece is locked to the locking portion to restrict the movement of the shaft portion in the detachment direction. The pivoting mechanism according to any one of claims 1 to 7 , wherein the mechanism can be formed. The pivoting mechanism according to claim 1 or 8 , wherein the locking piece of the elastic portion is locked to the locking portion to regulate relative rotation with respect to the shaft portion. The invention according to any one of claims 1 to 9 , wherein an fitting space is formed between the first member and the second member so that the flange portion of the elastic portion can be elastically deformed and fitted. Pivot attachment mechanism. The shaft portion has a male screw spiral groove forming a thread, and has a male screw spiral groove.
The pivot according to any one of claims 1 to 9 , wherein a female screw portion screwed with the male screw spiral groove is formed in the hole of the first member and / or the hole of the second member. Wearing mechanism. It is a pivoting mechanism that pivotally connects the first member and the second member.
A hole drilled in the first member and a shaft portion configured to be inserted into the hole drilled in the second member .
At an intermediate position in the axial direction of the shaft portion, an elastic portion capable of elastically deforming in the radial direction with the axis of the shaft portion as a substantially center is provided.
The elastic portion is configured to be in sliding contact with at least one of the first member and the second member while being urged with a predetermined or higher pressing force.
The shaft portion and the elastic portion are configured to be rotatable relative to each other with the axis of the shaft portion as a substantially center, and the elastic action of the elastic portion urges the shaft portion with a predetermined or higher pressing force. A pivoting mechanism characterized by being configured to be in sliding contact. The shaft portion has a shaft portion side engaging portion that engages with one of the first member and the second member so as not to rotate relative to each other.
The elastic portion has an elastic portion-side engaging portion that is non-rotatably engaged with a member of the first member and the second member that the shaft portion-side engaging portion is not engaged with. 12. The pivoting mechanism according to claim 12 . The pivoting mechanism according to any one of claims 1 to 13 , wherein the elastic portion is configured so that each of the elastic portions can undergo different elastic deformations at two different positions in the axial direction. It is a pivoting mechanism that pivotally connects the first member and the second member.
A hole drilled in the first member and a shaft portion configured to be inserted into the hole drilled in the second member .
At an intermediate position in the axial direction of the shaft portion, an elastic portion capable of elastically deforming in the radial direction with the axis of the shaft portion as a substantially center is provided.
The elastic portion is configured to be in sliding contact with at least one of the first member and the second member while being urged with a predetermined or higher pressing force.
In the elastic portion, the inner peripheral surface is in sliding contact with the shaft portion and rotates integrally with one of the first member and the second member.
The shaft portion is a pivoting mechanism characterized in that it rotates integrally with the other of the first member and the second member.

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