JP6185782B2 - Hinge - Google Patents

Description

  The present invention relates to hinge technology.

  Various techniques relating to a hinge that rotatably connects a second connection object to the first connection object are known. Among them, there is known a hinge that is reduced in size and weight by generating a friction torque between a first member and a second member (see Patent Document 1 and Patent Document 2).

JP 2004-225780 A JP 2005-30463 A

  In the hinges described in the respective patent documents, the shaft portion of the first member is inserted into the cylindrical portion of the second member, and a spring pin is interposed between the shaft portion and the cylindrical portion. Then, using the elastic force of the spring pin, a frictional force is generated between the inner peripheral surface of the spring pin and the outer peripheral surface of the shaft portion, and a friction torque is generated between the first member and the second member. ing.

  According to the configuration in which the spring pin is inserted between the shaft portion and the cylindrical portion as in the prior art, the outer diameter of the hinge is increased by the thickness of the spring pin. That is, since the spring pin for obtaining the friction torque is arranged around the shaft portion, it has been an obstacle to the reduction in size and weight of the hinge.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a hinge that can be reduced in size and weight by reducing the outer diameter of the hinge.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, according to the first aspect of the present invention, a shaft portion that is formed in a substantially cylindrical shape and has a through-hole that penetrates in the diameter direction in the middle portion thereof, and a first portion that is continuous with the shaft portion in the axial direction of the shaft portion. A first member having a support portion, a bottomed cylindrical case portion into which the shaft portion is inserted, and a second support portion continuous with the case portion in the axial direction of the case portion. The through-hole is opened as a long hole whose longitudinal direction is the axial direction of the shaft portion, and the through-hole is formed in the middle portion of the axial portion in the axial direction. A portion between one end and the other end in the longitudinal direction is provided with a large-diameter portion formed so as to protrude radially outward, and the middle portion of the shaft portion is inserted into the case portion in a state of contracting radially inward. As a result, the inner peripheral surface of the case portion is moved forward by the elastic force of the shaft portion. Wherein the shaft portion with the outer peripheral surface of the large diameter portion is pressed, the second member is intended to be relatively rotatable while receiving the sliding resistance relative to the first member.

  According to a second aspect of the present invention, a spring pin contracted inward in the radial direction of the shaft portion is inserted into the through hole.

According to a third aspect of the present invention , a lubricating groove is formed on the outer peripheral surface of the large-diameter portion in the circumferential direction of the shaft portion.

According to a fourth aspect of the present invention, a cam groove is formed on the inner peripheral surface of the case portion, and a cam portion that engages with the cam groove is formed on the outer peripheral surface of the large diameter portion so as to protrude outward. .

As effects of the present invention, the following effects can be obtained.
That is, according to the hinge according to the present invention, it is possible to reduce the size and weight by reducing the outer diameter of the hinge.

The perspective view which showed the hinge which concerns on 1st embodiment. The exploded perspective view of a hinge similarly. (A) And (b) is the partially notched front view and partially notched top view which respectively showed the hinge. AA line sectional view in Drawing 3 (a). The disassembled perspective view which showed the hinge which concerns on 2nd embodiment. The disassembled perspective view which showed the hinge which concerns on 3rd embodiment. The middle part sectional view of the hinge concerning a third embodiment.

  First, the hinge 10 which concerns on 1st embodiment of this invention is demonstrated using FIGS. 1-4. In this specification, the direction of the arrow shown in each figure is demonstrated as a direction in a hinge. That is, the hinge 10 according to the present embodiment is formed as a shaft-like member whose axial direction is directed to the left and right, and a first member 20 and a second member 50, which will be described later, are centered on the axial center directed to the lateral direction. As a relatively rotatable structure. In addition, the dashed-dotted line in FIG.2, FIG.5 and FIG.6 has shown the positional relationship at the time of connecting each member.

  The hinge 10 is used as a connector for rotatably connecting two members such as a main body portion and a display portion of a notebook personal computer, for example. Hereinafter, the two members connected by the hinge 10 will be described as a “first connection object” and a “second connection object”.

  As shown in FIGS. 1 to 4, the hinge 10 includes a first member 20 and a second member 50 as main components.

The first member 20 is a metal member fixed to the first connection object. The first member 20 includes a shaft portion 21 and a first support portion 22 that is continuous with the shaft portion 21 on the left side of the shaft portion 21.
The shaft portion 21 is formed in a cylindrical shape with an enlarged middle portion in the left-right direction, and the upper and lower surfaces of the enlarged middle portion are cut off by a pair of planes. And in the midway part of the axial part 21, the through-hole 21a which penetrates the axial part 21 is opened by the diameter direction (up-down direction) orthogonal to an up-and-down plane. By this through hole 21a, the middle portion of the shaft portion 21 is configured to be elastically deformable in the front-rear direction (can be reduced in width in the front-rear direction by an external force).

  On the left side of the shaft portion 21, a first support portion 22 fixed to the first connection object is formed. The first support portion 22 is formed in a shape in which the upper and lower surfaces of a columnar shape are cut out by a pair of planes. A fixing hole 22a is opened in the first support portion 22 through a pair of planes. The first support portion 22 is fixed to the first connection object by fixing the fixing tool to the first connection object in a state where a fixing tool such as a bolt is inserted into the fixing hole 22a.

  Between the shaft portion 21 and the first support portion 22, an engaged portion 23 whose diameter is increased outward in the radial direction is formed. The first member 20 and the second member 50 are connected by engaging the engaged portion 23 with an engaging portion 51c in the second member 50 described later.

The second member 50 is a resin member fixed to the second connection object. The second member 50 includes a case part 51 and a second support part 52 that is continuous with the case part 51 on the right side of the case part 51.
The case portion 51 is a bottomed cylindrical member whose right side is closed and whose left side is open. Cutouts 51 b are formed in the upper and lower portions of the left end portion of the case portion 51. Further, an engagement portion 51 c that protrudes inward in the radial direction is formed on the inner peripheral surface of the left end portion of the case portion 51. When the shaft portion 21 of the first member 20 is inserted into the case portion 51, the left end portion of the case portion 51 is elastically deformed by the engaged portion 23 so that the diameter thereof is increased. And the engaging part 51c engages with the to-be-engaged part 23, and the 1st member 20 and the 2nd member 50 are connected.

  On the right side of the case part 51, a second support part 52 fixed to the second connection object is formed. The 2nd support part 52 is formed in the shape by which the cylindrical upper and lower surfaces were cut off by a pair of planes. A fixing hole 52a is opened in the second support portion 52 through a pair of planes. The second support portion 52 is fixed to the second connection object by fixing the fixing tool to the second connection object in a state where a fixing tool such as a bolt is inserted into the fixing hole 52a.

  When the hinge 10 is formed, a force is applied inward in the radial direction with respect to the middle portion of the shaft portion 21 of the first member 20 to reduce the width in the front-rear direction. In this state, the shaft portion 21 is inserted into the case portion 51 of the second member 50.

  As described above, when the shaft portion 21 is inserted into the case portion 51 to form the hinge 10, the middle portion of the shaft portion 21 in which the through hole 21 a is formed is inserted into the case portion 51 in a state of being contracted radially inward. Is done. As a result, as shown by an arrow F in FIG. 4, a pressing force from the outer peripheral surface of the shaft portion 21 is applied to the inner peripheral surface of the case portion 51 by the elastic force of the shaft portion 21. In other words, the outer peripheral surface of the shaft portion 21 is pressed on the inner peripheral surface of the case portion 51 by the elastic force of the shaft portion 21. As described above, the second member 50 is rotatable relative to the shaft portion 21 while receiving sliding resistance. That is, the first member 20 and the second member 50 can rotate around the axis while receiving friction torque due to sliding resistance between the shaft portion 21 and the inner peripheral surface of the case portion 51.

  As described above, according to the hinge 10 according to the present embodiment, the through hole 21a is opened in the middle portion of the shaft portion 21, and the frictional force is generated using the elastic force of the middle portion of the shaft portion 21. Therefore, other parts such as spring pins are not used. For this reason, the hinge 10 can make an outer diameter small compared with the structure which arrange | positions a spring pin around the axial part and generates a frictional force. That is, by using the shaft portion 21 having the through hole 21a opened to obtain the friction torque, no other parts are provided between the shaft portion 21 and the case portion 51, so that the hinge can be reduced in size and weight. Is possible.

  Next, the hinge 110 which concerns on 2nd embodiment of this invention is demonstrated using FIG. In the hinges described in the following embodiments, the same reference numerals are given to the components common to the hinges 10 according to the first embodiment, the description thereof is omitted, and different components will be mainly described.

  In the hinge 110 according to the present embodiment, a through hole 121a that penetrates the shaft portion 121 in the vertical direction is opened in the middle portion of the shaft portion 121. By the through hole 121a, the middle part of the shaft part 121 is configured to be elastically deformable in the front-rear direction. Then, the spring pin 30 in a contracted state on the inner side in the radial direction of the shaft portion 121 is inserted into the through hole 121a.

  Specifically, as illustrated in FIG. 5, an insertion hole 121 b having substantially the same diameter as the spring pin 30 is opened from the right end side to the midway portion in the axial center portion of the shaft portion 121. Then, with the spring pin 30 contracted radially inward, the spring pin 30 is inserted into the insertion hole 121b of the shaft portion 121 from the right side, and the shaft portion 121 is further inserted into the case portion 51. Thereby, a pressing force is applied to the inner peripheral surface of the case portion 51 from the outer peripheral surface of the shaft portion 121 by the elastic force of the spring pin 30 in addition to the elastic force of the shaft portion 121. In other words, the outer peripheral surface of the shaft portion 121 is pressed on the inner peripheral surface of the case portion 51 by the resultant force of the elastic force of the shaft portion 121 and the elastic force of the spring pin 30. As described above, the second member 50 is rotatable relative to the shaft 121 while receiving sliding resistance.

  As described above, according to the hinge 110 according to the present embodiment, the through hole 121a is opened in the middle portion of the shaft portion 121, and not only the elastic force of the middle portion of the shaft portion 121 but also the elastic force of the spring pin 30 is provided. It is configured to generate frictional force using it. For this reason, the hinge 110 can obtain the friction torque more efficiently as compared with the configuration in which the friction force is generated using the elastic force of only the shaft portion. In other words, the stability of the friction torque in the hinge 110 can be improved, and the durability of the hinge 110 can be further improved. In addition, even when a desired friction torque is required, it is not necessary to increase the diameter of the hinge 110, so that the hinge 110 can be reduced in size and weight.

  Further, in the hinge 110 according to the present embodiment, grooves 121 c and 121 c are formed on the outer peripheral surface of the shaft portion 121 in the circumferential direction of the shaft portion 121. The grease, which is a lubricant, accumulates in the grooves 121c and 121c, so that sliding performance and durability performance between the inner peripheral surface of the case portion 51 and the outer peripheral surface of the shaft portion 121 can be improved. That is, the sliding performance and the durability performance when the first member 120 and the second member 50 are rotated while receiving the friction torque due to the sliding resistance can be improved.

  Next, the hinge 210 which concerns on 3rd embodiment of this invention is demonstrated using FIG.6 and FIG.7. In the hinge 210 according to the present embodiment, a cam groove 251a is formed on the inner peripheral surface of the case portion 251 in the axial direction (left-right direction), and the cam portion is engaged with the cam groove 251a on the outer peripheral surface of the shaft portion 221. 221b is formed to protrude outward. Therefore, when the shaft portion 221 is inserted into the case portion 251 to form the hinge 210 and the first member 220 and the second member 250 are relatively rotated, the cam portion 221b is cammed as shown in FIG. A click feeling can be given to the user when engaged with the groove 251a.

  In the hinge 210 according to the present embodiment, as in the hinge 110 in the second embodiment, a configuration in which a spring pin is inserted into the shaft portion 221 or a configuration in which a groove is formed in the circumferential direction on the outer peripheral surface of the shaft portion 221. It is also possible to do.

DESCRIPTION OF SYMBOLS 10 Hinge 20 1st member 21 Shaft part 21a Through-hole 50 Second member 51 Case part

Claims (4)

A first part having a substantially cylindrical shape and having a shaft part in which a through-hole penetrating in the diameter direction is opened in the middle part thereof, and a first support part continuous with the shaft part in the axial direction of the shaft part. Members,
A hinge comprising: a bottomed cylindrical case portion into which the shaft portion is inserted; and a second member having a second support portion continuous with the case portion in the axial direction of the case portion,
The through-hole is opened as a long hole whose longitudinal direction is the axial direction of the shaft portion,
A portion between the one end and the other end in the longitudinal direction of the through hole is provided in the middle portion in the axial direction of the shaft portion, and a large diameter portion is formed so as to protrude radially outward.
By inserting the intermediate portion of the shaft portion into the case portion in a state where the intermediate portion of the shaft portion contracts radially inward, the large diameter portion of the shaft portion is formed on the inner peripheral surface of the case portion by the elastic force of the shaft portion. And the second member is capable of relative rotation while being subjected to sliding resistance with respect to the first member.   The hinge according to claim 1, wherein a spring pin in a contracted state is inserted into the through hole in a radially inner side of the shaft portion. The hinge according to claim 1 or 2, wherein a groove for lubrication is formed on an outer peripheral surface of the large-diameter portion in a circumferential direction of the shaft portion. 4. A cam groove is formed on the inner peripheral surface of the case portion, and a cam portion engaging with the cam groove is formed on the outer peripheral surface of the large diameter portion so as to protrude outward. The hinge according to any one of claims.

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