JP2015219269A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting tool which can be easily assembled and can maintain a stable connecting state without loosening for a long period of time. SOLUTION: The connecting tool includes a connecting pin 1 having a tubular main body portion 10 and a connecting pin 2 having a columnar main body portion 20, and a columnar main body portion of the connecting pin 2 is provided in an opening of the tubular main body portion 10 of the connecting pin 1. 20 is inserted and combined to form an insertion surface formed by expanding the inner peripheral surface of the tubular main body 10 of the connecting pin 1 so that the inner diameter swells, and the columnar main body 20 of the connecting pin 2. A locking portion formed so as to bulge the outer diameter is arranged on the outer circumference so as to face each other, and the outer peripheral surface whose diameter is tapered toward the opening of the locking portion is tapered toward the opening of the insertion surface. It is set so that at least a part of it is in pressure contact with an inclined surface whose diameter is reduced in a shape. [Selection diagram] Fig. 1

Description

  The present invention relates to a connector for connecting members used for hinges, binding tools for documents, and the like.

  In the hinge, the top parts are connected to each other by a connecting tool such as a screw so as to be rotatable. However, in such a hinge, the turning operation of the top part is adjusted by tightening the screw. If the screw is tightened strongly, the frictional force between the frame parts increases and the rotation becomes heavy, and if the screws are loosened, the rotation of the frame part becomes light.

  However, when the members connected by the hinges move, the top portions come into pressure contact with each other and slide. Therefore, if the hinges turn heavy, it is difficult to realize a smooth member operation. If the movement becomes lighter, the member will move carelessly. For this reason, it is difficult to adjust by tightening the screw to achieve the optimum operation of the member, and when the operation of the member that rotates the top part is repeated, the frictional resistance against the rotation of the top part gradually decreases. Loosening occurs, and it is necessary to readjust the screw tightening.

  In order to deal with such a hinge problem, for example, in Patent Document 1, a resin pin is fitted into a pin hole provided in both hinge pieces constituting the hinge to serve as a shaft, and a screw is screwed into the center hole of the pin. It is described that the outer diameter of the pin is enlarged, and an appropriate surface pressure is applied to the pin hole of the butterfly piece to smooth the opening and closing operation of the vine.

  In addition, as a connecting tool for members, for example, in Patent Document 2, a claw is attached to the inside of one end of a hollow rod, a head is attached to the other end, and the outside of the rod inserted into the hollow rod is attached. A retractable binding tool having a groove corresponding to a claw and a locking portion for stopping the claw from being pulled out is described.

JP 2002-357794 A Japanese Utility Model Publication No. 60-175678

  In Patent Document 1 described above, a combination of a resin pin and a screw is used as the hinge connection shaft. However, loosening of the connection direction of the connection shaft is likely to occur, and readjustment is necessary. Further, in Patent Document 2, a hollow rod and a rod inserted into the hollow rod are combined to engage the claw of the hollow rod and the locking portion of the rod, but there is a looseness between the claw and the locking portion. It is unavoidable that it tends to occur, and it is difficult to realize a stable connection state over a long period of time.

  Then, an object of this invention is to provide the coupling tool which can be assembled easily and can maintain the stable connection state, without loosening over a long period of time.

  The connector according to the present invention includes a first connection pin having a cylindrical main body portion and a second connection pin having a columnar main body portion, and the second connection pin is provided in an opening of the cylindrical main body portion of the first connection pin. The columnar main body is inserted and combined, and the insertion tool is formed by expanding the inner peripheral surface of the cylindrical main body of the first connecting pin so that the inner diameter expands. A contact surface and a locking portion formed so that an outer diameter swells on the outer periphery of the columnar main body portion of the second connecting pin are disposed to face each other, and are tapered toward the opening of the locking portion. The outer peripheral surface that is reduced in diameter is set so that at least a part thereof is in pressure contact with the inclined surface that decreases in a taper shape toward the opening of the insertion surface. Furthermore, the front-end | tip of the said latching | butting part has contact | abutted to the edge part on the opposite side to the said opening of the said insertion surface. Furthermore, it is set so that the outer diameter of the outer peripheral surface is larger than the inner diameter of the inclined surface so as to be in pressure contact at a position where the locking portion and the insertion surface abut. .

  By having the above configuration, the present invention can be easily assembled and can maintain a stable connected state without loosening over a long period of time.

It is sectional drawing regarding the Example of the coupling tool which concerns on this invention. It is the front view and bottom view regarding a 1st connection pin. It is the front view and bottom view regarding a 2nd connection pin. It is explanatory drawing which shows the process of combining a connecting pin. It is a partially expanded sectional view which shows the press-contact state of the insertion surface in the state which combined the connecting pin, and the latching | locking part. It is a top view regarding the hinge structure of the spectacles frame which used the connection tool as a connection axis. It is an exploded view of a hinge structure. It is AA sectional drawing in FIG. It is explanatory drawing regarding the rotation operation | movement with respect to the armor of a temple.

  Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

  FIG. 1 is a cross-sectional view of an embodiment of a connector according to the present invention. The coupling tool is configured by combining a coupling pin 1 as a first coupling pin and a coupling pin 2 as a second coupling pin. In this example, the coupling tool is formed on two plate-like members 100 and 200 to be coupled, respectively. The connecting holes are overlapped, the connecting pin 1 is inserted from the connecting hole of the plate-like member 100, the connecting pin 2 is inserted from the connecting hole of the plate-like member 200, and the two connecting pins are combined to constitute a connecting tool. .

  FIG. 2 is a front view (FIG. 2A) and a bottom view (FIG. 2B) regarding the connecting pin 1. The connecting pin 1 has a cylindrical tubular body 10 and a disk-shaped head 11 formed at one end of the tubular body 10. The outer diameter of the cylindrical main body 10 is set to be substantially the same as or slightly smaller than the connecting hole formed in the member to be connected, and the head 11 is formed to have a larger diameter than the cylindrical main body 10. It is set so as to be fitted to a stepped portion formed around the connection hole. An engagement protrusion 12 is provided on the surface of the head 11 on the cylindrical main body 10 side, and the engagement protrusion is formed in the engagement hole formed in the step when the connection pin 1 is inserted into the connection hole. 12 is fitted and attached, and the connecting pin 1 is set so as not to rotate with respect to the member to be connected after insertion.

  The inner peripheral surface 13 of the cylindrical main body 10 is set to an inner diameter that is substantially the same as or slightly larger than the outer diameter of the columnar main body 20 so that the columnar main body 20 of the connecting pin 2 is inserted. A curved insertion surface 14 is formed at an intermediate portion of the inner peripheral surface 13 so as to expand the inner diameter. The insertion surface 14 is formed on an inclined surface that decreases in a tapered shape from the position of the maximum inner diameter toward the opening.

  FIG. 3 is a front view (FIG. 3A) and a bottom view (FIG. 3B) regarding the connecting pin 2. The connecting pin 2 has a columnar main body 20 and a disk-shaped head 21 formed at one end of the columnar main body 20. The outer diameter of the columnar main body 20 is set to be substantially the same as or slightly smaller than the inner diameter of the inner peripheral surface 13 of the cylindrical main body 10 of the connecting pin 1. The head portion 21 is formed to have a larger diameter than the cylindrical main body portion 20, and is set so as to be fitted to a step portion formed around the connection hole. An engagement protrusion 22 is provided on the surface of the head 21 on the columnar main body 20 side, and the engagement protrusion 22 is formed in the engagement hole formed in the step when the connection pin 2 is inserted into the connection hole. Is set so that the connecting pin 2 does not rotate with respect to the member to be connected after insertion.

  A locking portion 23 whose outer diameter bulges into a curved surface is formed in the middle portion of the outer periphery of the columnar body portion 20, and the locking portion 23 is plane-symmetric with respect to a plane passing through the maximum outer diameter. It is formed to become. And the shape of the outer peripheral surface of the latching | locking part 23 differs from the shape of the insertion surface 14 of the cylindrical main-body part 10 of the connection pin 1. FIG. That is, in a state where the columnar main body portion 20 of the connecting pin 2 is inserted into the cylindrical main body portion 10 of the connecting pin 1 and combined as a connecting tool, the shape is tapered toward the opening of the cylindrical main body portion 10 in the locking portion 23. The outer peripheral surface that is inclined so as to be reduced in diameter is set so that at least a part thereof is in pressure contact with the inclined surface that is reduced in diameter toward the opening of the insertion surface 14. Further, the outer peripheral surface other than the pressure contact portion of the locking portion 23 is set so as to have a gap without contacting the insertion surface 14. By forming the outer diameter of the outer peripheral surface to be slightly larger than the inner diameter of the inclined surface at the position where the outer peripheral surface on the locking portion 23 side and the inclined surface on the insertion surface 14 side abut, the outer peripheral surface Can be set to be in pressure contact with the inclined surface.

  FIG. 4 is an explanatory diagram showing a process of inserting the connecting pin 2 into the connecting pin 1 and combining them. First, in a state where the connecting hole 100a formed in one member 100 to be connected and the connecting hole 200a formed in the other member 200 are overlapped, the connecting pin 1 is inserted from the connecting hole 100a and connected from the connecting hole 200a. The pin 2 is inserted (FIG. 4 (a)). Since the outer diameter of the distal end portion of the columnar body portion 20 of the connecting pin 2 is substantially the same as the inner diameter of the opening portion of the inner peripheral surface 13 of the cylindrical body portion 10 of the connecting pin 1, the distal end portion of the columnar body portion 20 is It inserts in the inner peripheral surface 13, and it is inserted and attached to the position where the latching | locking part 23 strikes the opening part of the cylindrical main-body part 10 (FIG.4 (b)).

  Further, the columnar main body 20 is pushed into the cylindrical main body 10, and the locking portion 23 is deformed and inserted so as to expand the opening of the cylindrical main body 10. Such deformation of the cylindrical main body 10 is a reversible deformation such as elastic deformation by forming the connecting pins 1 and 2 with a known engineering plastic (for example, polycarbonate, polysulfone, polyamide, polyphenylene oxide, etc.). be able to. Then, the pushed-in locking portion 23 slides on the inner peripheral surface 13 of the cylindrical main body portion 10 to a position facing the insertion surface 14, and the distal end of the locking portion 23 is the head of the insertion surface 14. The combination is completed at the position where it reaches the end on the 11th side (the end opposite to the opening) (FIG. 4C).

  Therefore, the columnar main body 20 can be configured as a connector that connects a plurality of members simply by being inserted into the cylindrical main body 10 and assembled, and the connector can be easily assembled in a short time. .

  FIG. 5 is a partially enlarged cross-sectional view showing a pressure contact state of the insertion surface 14 and the locking portion 23 in a state where the connecting pins 1 and 2 are combined. The distal end of the locking portion 23 abuts against the end opposite to the opening of the insertion surface 14, and the outer periphery is inclined so as to be tapered toward the opening of the cylindrical main body portion 10 of the locking portion 23. The surface S is in a state of being in partial pressure contact with the inclined surface T whose diameter decreases in a tapered shape toward the opening of the insertion surface 14. And the insertion surface 14 and the latching | locking part 23 are in the state with a gap | interval, without contacting in parts other than the part which press-contacted.

  Since the outer peripheral surface S is formed to have a slightly larger diameter than the inclined surface T at the position where the outer peripheral surface S is in contact with the inclined surface T, the inclined surface T is expanded at the contact position. As the inclined surface T is deformed, the restoring force in the direction of reducing the diameter of the inclined surface T acts on the outer peripheral surface S. Such a restoring force acts on the inclined outer peripheral surface S so that a force for pulling the outer peripheral surface S in the insertion direction works, and the state where the columnar main body portion 20 is pulled into the cylindrical main body portion 10 is maintained. become. Therefore, the connecting pin 2 can be firmly assembled to the connecting pin 1 without rattling. And since the force of the direction pulled in in the cylindrical main-body part 10 will always work to the column-shaped main-body part 20, a several member can be connected without a connector loosening over a long period of time.

  When the tip of the locking portion 23 abuts against the end of the insertion surface 14 in the insertion direction, the columnar main body portion 20 cannot be pushed further into the cylindrical main body portion 10, so the locking portion 23 and the insertion surface By adjusting the setting position of 14, the length of the coupling tool after assembly can be accurately adjusted. Therefore, after inserting the connecting pin into the plurality of members and assembling the connecting tool, the connecting tool is not rattled and overtightened, and can be firmly connected in a stable state.

  FIG. 6 is a plan view of a hinge structure of a spectacle frame using the connector according to the present invention as a connecting shaft, and FIG. 7 is an exploded view of the hinge structure. FIG. 8 is a cross-sectional view taken along the line AA in FIG. The hinge structure is configured such that the eyeglass frame armor 30 and the temple 40 are pivotally coupled by a coupling shaft 3 that is a coupling tool, and a pair of frame parts 31a and 31b that are first frame parts provided on the armor 30 side. In addition, a frame portion 41 which is a second frame portion provided on the temple 40 side is provided. The frame portions 31a and 31b are respectively formed with shaft holes 33a and 33b, and the frame portion 41 is formed with an adjustment hole 43. The frame part 41 is inserted between the frame parts 31a and 31b so as to overlap each other, and the connecting shaft 3 is inserted into a through hole formed by aligning the shaft holes 33a and 33b and the adjustment hole 43. The connecting shaft 3 is configured by inserting the connecting pin 1 from the shaft hole 33a and inserting the connecting pin 2 from the shaft hole 33b and combining them. The temple 40 is connected to the armor 30 so as to be rotatable about the connecting shaft 3 as a rotating shaft. In the example shown in FIG. 6, the pair of top portions 31 a and 31 b and the top portion 41 are combined. However, the top portions on the side of the temple 30 and the temple 40 may be increased and combined. The number is not particularly limited. Further, a pair of top portions may be provided on the temple 40 side, and a single top portion may be provided on the armor 30 side, and the number of top portions provided respectively on the members to be connected can be appropriately set.

  The fitting portion 32 formed on the inner peripheral surface between the top portions 31 a and 31 b is formed with a plurality of concave portions arranged along the rotation direction of the temple 40. A receiving portion 42 is formed on the outer surface of the top portion 41 facing the fitting portion 32 by cutting out in a circular arc shape in plan view, and a spherical rotating member 50 is fitted into the receiving portion 42 so as to be able to roll. It is. The rotating member 50 partially protrudes outward from the receiving portion 42, and the recess formed in the fitting portion 32 is formed along the protruding portion of the rotating member 50. And the protrusion part of the rotation member 50 enters the recessed part of the fitting part 32, and can hold | maintain the temple 40 so that it may not rotate. The rotating member 50 may be formed in a shape other than a spherical shape as long as it can roll along the fitting portion 32. For example, the rotating member 50 may be formed in a columnar shape or a barrel shape. And the recessed part of the fitting part 32 should just be formed according to the shape so that the rotation member 50 can enter smoothly.

  FIG. 9 is an explanatory diagram relating to the rotation operation of the temple 40 with respect to the armor 30. 9A to 9C show a process in which the temple 40 is rotated counterclockwise with respect to the armor 30. FIG. In FIG. 9, in order to facilitate understanding of the engagement state of the rotating member 50 and the fitting portion 32, the top portion 31 a on the side of the armature 30 is omitted, and the connecting shaft 3 is also the main body portion of the connecting pin 1. The outer periphery is drawn with a circular cross section.

  In FIG. 9A, the temple 40 is set in an open state with respect to the armor 30, and the temple 40 side piece is placed on the abutting portion 34 on the inner peripheral surface between the piece parts 31 a and 31 b on the armor 30 side. The outer surface 44 of the part 41 is in contact. Therefore, the temple 40 is prevented from opening clockwise any further. In addition, the rotating member 50 enters and is held in the concave portion on the end side among the plurality of concave portions formed in the fitting portion 32.

  The adjustment hole 43 is formed in a shape in which a gap is generated in the direction in which the rotating member 50 is disposed with respect to the circular cross section of the connecting shaft 3. A portion 43 b of the adjustment hole 43 opposite to the rotating member 50 is formed so as to be along the circular cross section of the connecting shaft 3 and is set in a state of contacting the outer peripheral surface of the connecting shaft 3. The side portion 43 a is set to be slightly narrower than the width of the connecting shaft 3. For this reason, the connecting shaft 3 inserted into the adjustment hole 43 is held so as to be in close contact with the portion 43b on the side opposite to the rotating member 50, and a gap is formed in the direction in which the rotating member 50 is disposed. It is set so that the temple 40 does not rattle by moving in the direction of the rotating member 50 with respect to the shaft 3. The gap between the adjustment hole 43 and the connecting shaft 3 in the direction in which the rotating member 50 is disposed is set to be substantially the same as the height of the convex portion between the concave portions formed in the fitting portion 32. ing.

  FIG. 9B shows a state in which the temple 40 is rotated counterclockwise with respect to the armor 30 from the state of FIG. As the temple 40 rotates, the rotating member 50 moves while rolling along the fitting portion 32, and comes off the concave portion and rides on the convex portion. Therefore, the rotating member 50 is pressed so as to move in the direction of the connecting shaft 3, and the entire frame portion 41 acts so as to move from the receiving portion 42 toward the connecting shaft 3. Since a gap having substantially the same interval as the height of the convex portion is formed between the adjustment hole 43 and the connection shaft 3, the portion 43 a on the receiving portion 42 side of the adjustment hole 43 expands so as to be in close contact with the connection shaft 3. Thus, a gap is formed between the connecting portion 3 and the portion 43b on the opposite side of the receiving portion 42. Such deformation of the adjustment hole 43 can be made reversible deformation such as elastic deformation by forming the top portion 41 with a known engineering plastic (for example, polycarbonate, polysulfone, polyamide, polyphenylene oxide, etc.). Since the connecting shaft 3 is in close contact with the portion 43a of the adjustment hole 43 on the receiving portion 42 side, the temple 40 is held without rattling.

  FIG. 9C shows a state where the temple 40 is further rotated counterclockwise from the state of FIG. 9B. As the temple 40 rotates, the rotating member 50 riding on the convex portion of the fitting portion 32 moves so as to enter the next concave portion while rolling. Therefore, the top part 41 pressed against the connecting shaft 3 due to the deformation of the adjusting hole 43 acts so as to move toward the fitting part 32, and the adjusting hole 43 is restored to its original shape so that the connecting shaft 3 is The adjustment hole 43 comes into close contact with the portion 43b opposite to the receiving portion 42.

  As described above, with the rotation of the temple 40, the rotary member 50 on the top part 41 side rolls along the fitting part 32 formed between the top parts 31a and 31b and enters the recess. The ride on the convex portion is repeated, and the adjustment hole 43 is reversibly deformed accordingly, and the portion 43 a on the receiving portion 42 side or the portion 43 b on the opposite side comes into close contact with the connecting shaft 3. Therefore, the frictional force at the time of rotation is reduced by the rotation of the rotation member 50, and the rotation operation of the temple 40 can be performed smoothly. Further, the rotation position of the temple 40 can be maintained in a state where the rotation member 50 enters the recess, and the temple 40 can be stably rotated without inadvertent rotation.

  Then, the rotating member 50 is attached to the top portion 41 so as to be able to roll, and the fitting portion 32 is formed between the top portions 31a and 31b, and the shape of the adjustment hole 43 into which the connecting shaft 3 is inserted is reversibly deformed. Since it is formed to be possible, the conventional hinge structure can be incorporated into the internal structure without greatly changing, and the hinge structure can be made compact and lightweight. Therefore, the degree of freedom for designing the outer shape of the hinge structure in accordance with the design of the spectacle frame is increased. In addition, the shape of the adjustment hole 43, the size of the rotating member 50, and the shapes of the concave and convex portions of the fitting portion 32 can be appropriately set according to the resin material used for the hinge structure. And by using the connecting tool which combined the connecting pin mentioned above, it can set so that the fastening by the connecting tool with respect to a top part may be optimized, and a smooth and stable rotation operation can be performed.

  When assembling the hinge structure described above, the top 41 is inserted between the tops 31a and 31b after the rotating member 50 is mounted on the receiving part 42 of the top 41, and the adjustment hole 43 and the shaft holes 33a and 33b are inserted. And align. Then, by inserting the connecting pins 1 and 2 from the shaft holes 33a and 33b and combining them, the connecting shaft 3 can be assembled to the hinge structure, and the hinge structure can be easily assembled.

  Since the connection tool according to the present invention can be securely connected in a stable state without rattling and overtightening a plurality of members to be connected, in order to file documents and the like in addition to the hinge structure described above. It is used as a connection tool in various fields such as a stationery such as a binding tool for furniture, a connection tool for furniture members such as shelves, a connection tool for building materials, a transport tool, a lighting device, and a connection tool for members constituting an electrical device. It is possible.

DESCRIPTION OF SYMBOLS 1 ... Connection pin, 2 ... Connection pin, 3 ... Connection shaft, 10 ... Cylindrical main-body part, 13 ... Inner peripheral surface, 14 ... Insertion surface, 20 ... Columnar body part, 23 ... Locking part, 30 ... Yoroi, 31a, 31b ... Frame part, 32 ... Fitting part, 33a, 33b ... Shaft hole, 34 ... Contact Part, 40 ... temple, 41 ... frame part, 43 ... adjustment hole, 44 ... outer surface, 50 ... rotating member, S ... outer peripheral surface, T ... inclined surface

The connector according to the present invention includes a first connection pin having a cylindrical main body portion and a second connection pin having a columnar main body portion, and the second connection pin is provided in an opening of the cylindrical main body portion of the first connection pin. The columnar main body is inserted and combined, and the insertion tool is formed by expanding the inner peripheral surface of the cylindrical main body of the first connecting pin so that the inner diameter expands. A contact surface and a locking portion formed so that an outer diameter swells on the outer periphery of the columnar main body portion of the second connecting pin are disposed to face each other, and are tapered toward the opening of the locking portion. The outer peripheral surface that is reduced in diameter is set so that at least a part thereof is in pressure contact with the inclined surface that is tapered toward the opening of the insertion surface. The landing surface and the locking portion are not in contact with each other and have a gap . Furthermore, the front-end | tip of the said latching | locking part has contact | abutted to the edge part on the opposite side to the said opening of the said insertion surface. Further, at the position where the locking portion and the insertion surface abut, the outer diameter of the outer peripheral surface is set so as to be larger than the inner diameter of the inclined surface so as to be in pressure contact. Yes.

Claims (4)

  A first connection pin having a cylindrical main body portion and a second connection pin having a columnar main body portion, and the columnar main body portion of the second connection pin is inserted into an opening of the cylindrical main body portion of the first connection pin. And a second connecting pin formed by expanding the inner peripheral surface of the cylindrical main body of the first connecting pin so that the inner diameter is expanded. A locking portion formed so that an outer diameter of the columnar body portion bulges out on the outer periphery of the columnar main body portion, and an outer peripheral surface whose diameter decreases in a tapered shape toward the opening of the locking portion. A connector that is set so that at least a part thereof is in pressure contact with an inclined surface that is tapered toward the opening of the insertion surface.   The connector according to claim 1, wherein a tip end of the locking portion abuts against an end portion of the insertion surface opposite to the opening.   In the position where the locking portion and the insertion surface abut, the outer diameter of the outer peripheral surface is set to be larger than the inner diameter of the inclined surface so as to be in pressure contact. Item 3. A connector according to item 1 or 2.   A hinge structure comprising the connector according to claim 1 as a connecting shaft.

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