JP3988727B2 - Torsion spring hinge - Google Patents

Description

  The present invention relates to a torsion spring type hinge.

  As a hinge using a torsion spring, one using a torsion bar and one using a torsion spring are known.

  As a hinge using a torsion bar, for example, in Patent Document 1, a pair of fixed side blades, a pair of movable side blades that are rotatably connected to the fixed side blades by a pair of shaft pins, And a pair of holder cylinders fixed to one movable side blade, and a torsion bar in which both end portions are inserted into the holder cylinder and the bent portion engages with the rotation stop portion of the holder cylinder. A return biasing hinge has been proposed.

  As a hinge using a torsion spring, for example, Patent Document 2 discloses a mounting member having a substantially U-shaped cross section having a mounting plate and a side plate, and a pair of fixed shafts mounted so as to be orthogonal to the outside of the mounting member, A pair of support members each having a support plate and a side plate rotatably mounted on the free end side of the fixed shaft, and a pair of stoppers for restricting the rotation range of the support member on the free end side of the fixed shaft A torsion spring provided between the plate, the mounting member and the support member while being wound around the fixed shaft; and a first friction washer and a second friction washer provided between the support member and the fixed shaft; A tilt hinge comprising:

JP 2001-27073 A Japanese Patent Laid-Open No. 2000-289652

  By the way, in the hinges described in Patent Documents 1 and 2, when assembling the hinge, or when assembling the assembled hinge to a home appliance or the like, it is necessary to work in a state where the torsion bar or the torsion spring is twisted. There is a problem that the work becomes very complicated.

  An object of the present invention is to provide a torsion spring hinge that can be easily assembled or assembled.

Ribane hinges twisted Ru engaged to the present invention includes a first hinge component of a pair of the spaced mutually spacing, and a second hinge component that is disposed on between the first hinge component, A pair of shaft members that are assembled to the first hinge constituent members so as not to rotate relative to each other, and whose inner end portions are rotatably attached to the second hinge constituent members, so that the hinge constituent members are rotatably connected. A torsion spring comprising a torsion bar formed with an engaging portion that engages with the first hinge components at the both ends so as not to rotate relative to each other, and a pressing portion that protrudes outward in the middle portion; And a torsional force applying means capable of applying a torsional force to the torsion spring after the torsion spring is assembled by pressing the pressing portion of the torsion spring in the torsion direction. Is.

In the torsion spring type hinge, after the torsion spring is assembled, a necessary torsion force can be applied to the torsion spring by the torsion force applying means. Since the necessary torsional force can be applied to the torsion spring after the hinge is assembled to the hinge , etc., the hinge assembly work and the hinge assembly work for home appliances can be easily performed.

Here, in the torsion spring hinge, the axis forming assembly bore of larger diameter than the length of the engaging portion in the assembled position of the torsion spring in the member, the engagement portion at the back end of the assembly bore Forming an elongated engagement hole to be engaged; providing an operating resistance applying means for applying an operating resistance to relative rotation between the first hinge constituent member and the second hinge constituent member; and the first hinge constituent member It is a preferred embodiment to provide a rotation range limiting means for limiting the relative rotation range between the first hinge component and the second hinge component .

  In the torsion spring type hinge according to the present invention, the torsional force can be applied after the torsion spring is assembled with the simple structure of providing the torsion force applying means. Since the necessary torsional force can be applied to the torsion spring after assembling the hinge or assembling the hinge to the home appliance, etc., the assembly of the hinge and the assembly of the hinge to the home appliance can be performed easily. Become.

Here, an elongated engagement before forming the assembly bore of larger diameter than the length of the engaging portion in the assembled position of the torsion spring in Kijiku member, the engaging portion is engaged with the inner end of the assembly bore When the hole is formed, the moldability of the shaft member can be improved. That is, for example, a molded product made of a synthetic resin material is used as the shaft member. However, if a long and narrow hole having a cross-sectional shape suitable for the engaging portion is formed over the substantially entire length of the shaft member, the moldability of the shaft member is greatly increased. As for the assembly hole, an assembly hole having a diameter larger than the length of the engagement portion is formed, and an elongated engagement hole that engages with the engagement portion is formed only at the back end portion of the assembly hole. and Turkey is preferred.

  Embodiments of the present invention will be described below with reference to the drawings.

  In this embodiment, the present invention is applied to a hinge provided on a support base of a liquid crystal television. As shown in FIG. A support column 3 is fixed upright, and a pivot member 4 is supported at the upper end of the support column 3 so as to be pivotable about a pivot shaft 7 in the vertical direction. Is supported to be tiltable in the front-rear direction via a torsion spring type hinge 10, and the liquid crystal television 6 is detachably attached to the front side of the television support arm 5. However, the present invention can be similarly applied to hinges for supporting display devices and bulletin boards other than the liquid crystal television 6 so that they can be tilted and pivoted, and other household appliances or furniture hinges. It is.

  As shown in FIGS. 1 to 6, the hinge 10 includes a pair of first hinge constituent portions 11 (which correspond to first hinge constituent members) that are spaced apart from each other, and left and right first hinges. The second hinge component 12 (which corresponds to the second hinge component) disposed between the components 11 and the first hinge component 11 on the left and right sides are assembled so as not to rotate relative to each other, and the end portion is the first hinge. A pair of shaft members 13 rotatably attached to the two hinge constituent parts 12 and rotatably connecting the first hinge constituent parts 11 and the second hinge constituent parts 12, and left and right first hinge constituents at both ends. The torsion spring 14 composed of a torsion bar having an engaging portion 14a that engages with the portion 11 so as not to rotate relative to each other, and a pressing portion 14b that protrudes outward in the middle portion, and the second hinge constituting portion 12 are assembled. The pressing portion of the torsion spring 14 attached By pressing 4b in the torsional direction, a torsional force applying means 15 capable of applying a torsional force to the torsion spring 14 after the torsion spring 14 is assembled, the first hinge component 11 and the second hinge component 12 A rotation range limiting means 16 that limits the relative rotation range of the first hinge component 11 and an operation resistance applying unit 17 that applies an operation resistance to the relative rotation of the first hinge component 11 and the second hinge component 12. .

  A pair of first hinge components 11 are integrally formed on the lower frame 5a of the television support arm 5 so as to protrude downward with a left-right spacing, and the second hinge component 12 is located upward on the pivot member 4. The second hinge constituent part 12 is disposed so as to be integral with the left and right first hinge constituent parts 11 without any gap. The first hinge component 11 is formed with a first shaft hole 20 that is a through hole extending in the left-right direction, and the second hinge component 12 is formed from a pair of left and right bottomed holes that extend from the first shaft hole 20. A second shaft hole 21 is formed. A shaft member 13 is fitted into the inner half of the left and right first shaft holes 20 that are close to each other, and the shaft member 13 has a first hinge formed by a pair of substantially parallel engaging surfaces 22 formed on the outer peripheral surface thereof. The component 11 is assembled so as not to be relatively rotatable. The inner half portions of the left and right shaft members 13 that are close to each other are provided so as to protrude inward from the first hinge constituting portion 11 and are respectively fitted into the left and right second shaft holes 21 of the second hinge constituting portion 12 so as to be freely rotatable. The first hinge component 11 is rotatably supported by the second hinge component 12 via the left and right shaft members 13.

  Plugs 23 are fitted in the outer half portions of the left and right first shaft holes 20 that are spaced apart from each other, and the plug 23 is configured as a first hinge by a pair of substantially parallel engaging surfaces 24 formed on the outer peripheral surface thereof. It is assembled to the part 11 so as not to be relatively rotatable, and is assembled so as not to be movable in the axial direction by a screw member 18 screwed into the rear part of the first hinge constituting part 11.

  As shown in FIGS. 4 to 6, the torsion spring 14 includes a substantially Ω-shaped pressing portion 14b formed in the middle portion, a straight portion 14c extending from the pressing portion 14b to the left and right sides, and straight from the end of the straight portion 14c. An engaging portion 14a that is substantially orthogonal to the portion 14c and extends in the same direction as the pressing portion 14b, is manufactured by bending a metal rod having spring properties. However, the pressing portion 14b can be formed in an arbitrary shape as long as it has a portion eccentric with respect to the straight portion 14c. For example, the pressing portion 14b can be formed in a U shape or a U shape. Further, the torsion spring 14 can be divided into left and right portions in the pressing portion 14b.

  At the eccentric position of the left and right shaft members 13, a first assembly hole 25 made of a round hole-shaped through hole having a diameter larger than the length of the engaging portion 14 a of the torsion spring 14 is formed in the axial direction. The second assembly hole 26, which has a bottomed hole having the same diameter as the first assembly hole 25, is formed continuously to the first assembly hole 25, and is twisted at the back end of the second assembly hole 26. An elongated bottomed engagement hole 27 that is slightly wider than the diameter of the metal wire constituting the spring 14 is formed obliquely. The torsion spring 14 has the left and right straight portions 14c mounted in the first assembly hole 25 of the shaft member 13 and the second assembly hole 26 of the plug 23, respectively, and the engagement portion 14a is mounted in the engagement hole 27. 4 and 5, the shaft member 13 and the plug 23 are assembled so that the straight portion 14c is located on the upper side and the pressing portion 14b and the engaging portion 14a extend rearward and obliquely downward from the straight portion 14c. It is attached.

  The shaft member 13 and the plug 23 can be configured as a single member. However, since the assembly holes 25 and 26 are elongated in the axial direction and the moldability is lowered, it is preferable to configure them separately. In addition, the assembly holes 25 and 26 can be formed in a slender cross-sectional shape extending obliquely through which the engaging portion 14a can be inserted in the same manner as the engaging hole 27, but the moldability of the shaft member 13 and the plug 23 is improved. Therefore, it is preferable to form a round hole, an elliptical hole, or a square hole having a diameter slightly larger than the length of the engaging portion 14a. Further, as shown in FIG. 7, instead of the first assembly hole 25, a first assembly hole 25A having an elongated cross-sectional shape through which the engaging portion 14a can be inserted is formed in the shaft member 13 over the entire length, and the second assembly Instead of the attachment hole 26, a second assembly hole 26A having a keyhole shape through which the engaging portion 14a can be inserted is formed in the plug 23, and the first assembly hole 25A and the second assembly hole 26A are held in a round hole shape. The straight portion 14c may be held by the portion 41 and the straight portion 14c may not be tilted when the torsion spring 14 is twisted.

  The torsional force imparting means 15 will be described. As shown in FIGS. 3 and 4, a screw hole 28 extending obliquely downward to the front is formed at a position facing the pressing portion 14c in the rear part of the turning member 4, and this screw An adjustment screw 29 is screwed into the hole 28, and after the torsion spring 14 is assembled, as shown by a virtual line in FIG. 4, the adjustment screw 29 is screwed forward until the pressing portion 14b is substantially vertical. Thus, the straight portion 14c of the torsion spring 14 is twisted, and a rearward spring force indicated by an arrow A centering on the shaft member 13 acts on the engaging portion 14a.

  The spring force of the torsion spring 14 is set so that the weight of the liquid crystal television 6 and the television support arm 5 and the spring force are substantially balanced in a state where the liquid crystal television 6 is in a substantially vertical direction. That is, as shown in FIG. 1, since the center of gravity G of the liquid crystal television 6 and the television support arm 5 is located in front of the rotation center P of the shaft member 13, the liquid crystal television 6 and the television support arm 5 are connected by the torsion spring 14. By urging backward, the weight of the liquid crystal television 6 and the television support arm 5 and the spring force are balanced, and the operability when adjusting the angle of the liquid crystal television 6 can be improved.

  The rotation range limiting means 16 will be described. As shown in FIG. 4, the second hinge component 12 is formed with an engaging protrusion 30 extending upward, and is disposed between the left and right first hinge components 11. An engagement recess 31 for receiving the engagement protrusion 30 is formed on the lower surface of the lower frame 5 a of the support arm 5, and the engagement protrusion 30 engages with the front wall portion 32 of the engagement recess 31 to support the television. The rearward tilt of the arm 5 is restricted, and the engagement protrusion 30 is engaged with the rear wall 33 of the engagement recess 31 so that the forward tilt of the television support arm 5 is restricted. The television support arm 5 is configured to be able to tilt within the range of the angle θ shown by the phantom line in FIG.

  The operation resistance applying means 17 is for applying a certain operation resistance to the tilting operation of the television support arm 5 and holding the liquid crystal television 6 at a desired tilting operation position, and is configured as follows.

  A guide hole 35 extending in the vertical direction is formed in the middle of the lower frame 5a of the television support arm 5 in the left-right direction, and a nut member 36 is assembled in the upper part of the guide hole 35 so as not to be relatively rotatable. A guide groove 37 is formed on the upper surface of the second hinge component 12 so as to correspond to the guide hole 35, and the guide hole 35 is screwed to the substantially cylindrical pressing member 38, a pair of upper and lower disc springs 39, and the nut member 36. A matching pressing screw 40 is assembled. On the lower surface of the pressing member 38, a partial cylindrical surface that substantially matches the bottom surface of the guide groove 37 is formed. By tightening the pressing screw 40 and pressing the pressing member 38 to the bottom surface of the guide groove 37 via the disc spring 39, Appropriate operating resistance is applied to the television support arm 5 by the frictional resistance between them.

  Next, an example of a method for assembling the hinge 10 will be described. First, the television support arm 5 is turned upside down so that the pressing member 38 and the disc spring 39 are not dropped, and the operation resistance applying means 17 is attached to the television support arm 5. Assemble. Next, the second hinge component 12 is arranged between the left and right first hinge components 11, and the shaft holes 20, 21 of the two hinge components 12 in the natural state, that is, not twisted. Attach to. Next, the left and right shaft members 13 are assembled to the first hinge component 11 and the second hinge component 12 so that the torsion spring 14 is inserted through the first assembly hole 25, and the first hinge component 11 and the second hinge component 11 are assembled. A hinge member 12 is rotatably connected by a shaft member 13. Next, the left and right sides of the torsion spring 14 are inserted into the second assembly holes 26 of the plug 23 so that the engaging portions 14a at both ends of the torsion spring 14 are fitted into the engagement holes 27 of the left and right plugs 23. The plugs 23 are assembled to the first hinge component 11 respectively. Next, the adjustment screw 29 of the torsion force applying means 15 is screwed and the pressing portion 14b of the torsion spring 14 is rotated forward at the tip of the adjustment screw 29 to twist the straight portion 14c of the torsion spring 14. Thus, a spring force is applied to the torsion spring 14. As described above, in the hinge 10, the spring force can be applied to the torsion spring 14 by operating the adjustment screw 29, and it is not necessary to assemble the torsion spring 14 in a twisted state. it can.

The hinge according to the second embodiment uses a torsion spring as a torsion spring. Hereinafter, although the hinge of this Example 2 is demonstrated, the same code | symbol is attached | subjected to the same member as Example 1, and the detailed description is abbreviate | omitted. The second embodiment is not an embodiment of the present invention but a reference example.

  As shown in FIGS. 8 and 9, the hinge 50 includes a pair of first hinge components 11A arranged at a distance from each other, and a second hinge arranged between the left and right first hinge components 11A. The hinge component 12A and the left and right first hinge components 11A are assembled in a relatively non-rotatable manner, and the inner end is rotatably assembled to the second hinge component 12A. A pair of shaft members 51 for rotatably connecting the second hinge constituent part 12A, and arranged on both sides of the second hinge constituent part 12A, the outer ends engage with the first hinge constituent part 11A in a relatively non-rotatable manner. After assembling the torsion springs 52 by assembling the pair of torsion springs 52 made of the torsion springs and the second hinge component 12A and pressing the inner ends of the torsion springs 52 in the torsion direction, Pair with torsion spring 52 A torsional force applying means 53 for applying a torsional force, a rotation range limiting means 16 for limiting the relative rotation range of the first hinge constituent part 11A and the second hinge constituent part 12A, the first hinge constituent part 11A and the second Operation resistance applying means 17 is provided for applying operation resistance to the relative rotation with the hinge component 12A.

  A pair of first hinge constituent portions 11A are integrally formed on the lower frame 5a of the TV support arm 5 so as to protrude downward with a left-right interval, and the second hinge constituent portions 12A are formed upward on the turning member 4A. The second hinge component 12A is disposed between the left and right first hinge components 11A. A first shaft hole 20A extending in the left-right direction is formed in the first hinge constituting portion 11A, and a shaft member 51 is spline-fitted into the first shaft hole 20A so as not to be relatively rotatable, and the left and right shaft members 51 penetrate therethrough. The connecting shaft 54 is held by the second hinge component 12A so as not to drop off. A second shaft hole 55 in the left-right direction is formed in the second hinge component 12 </ b> A in a penetrating manner, and inner end portions of the left and right shaft members 51 that are close to each other are rotatably mounted in the second shaft hole 55. .

  An operating member 56 is rotatably mounted in the second shaft hole 55 of the second hinge constituting portion 12A between the left and right shaft members 51, and a bottomed spring accommodating portion 57 is axially disposed on the left and right shaft members 51. A torsion spring 52 is externally mounted on the connecting shaft 54 in the left and right spring accommodating portions 57. Straight ends 52a and 42b extending in the axial direction are formed at both ends of the left and right torsion springs 52, the outer straight portion 52a is mounted in the engagement hole 58 of the shaft member 51, and the inner straight portion 52b is the operating member. 56 engagement holes 59 are mounted.

  The torsional force imparting means 53 will be described. As shown in FIG. 8, a screw hole 28A extending diagonally forward and downward is formed at a position facing the operation member 56 at the rear portion of the turning member 4, and the screw hole 28A is formed in the screw hole 28A. The adjustment screw 29A is screwed, and the operation member 56 is formed with a notch 60 to which the adjustment screw 29A is engaged. As shown by the solid line in FIG. 8, the adjustment screw 29A is screwed to the front end position. The operating member 56 rotates in the direction of arrow B and the torsion spring 52 is twisted, and a predetermined spring force shown by the arrow A centering on the shaft member 51 acts on the straight portion 52a, and the liquid crystal television 6 This spring force is configured to balance with the weight of the liquid crystal television 6 and the television support arm 5 in a state where is in a substantially vertical direction.

  In the hinge 50, a spring force can be applied to the torsion spring 52 by operating the adjustment screw 29A, and it is not necessary to assemble the torsion spring 52 in a twisted state, so that the assemblability of the hinge 50 can be remarkably improved.

  It should be noted that the left and right torsion springs 52 can be formed of a single member. In this case, the operation member 56 is omitted, a straight portion is formed in the middle of the torsion spring 52, the straight portion is directly pressed by the adjusting screw 29A, and the torsion spring 52 is twisted to apply the biasing force. Can be provided.

  As the torsional force applying means, any configuration can be adopted as long as the urging force can be applied by twisting the torsion spring after the torsion spring is assembled. Further, in this embodiment, the hinges 10 and 50 are integrally incorporated in the turning member 4 and the television support arm 5, but are constituted by independent separate members, and the turning member 4 and the television support arm 5 are connected with screws or the like. It may be assembled.

Side view of LCD TV and its support Side view of TV support arm and swivel member Rear view of TV support arm and swivel member Sectional view taken along line IV-IV in FIG. Cross-sectional view taken along line V-V in FIG. Exploded perspective view of the main part of the hinge (A) is a longitudinal sectional view of a shaft member, and (b) is a longitudinal sectional view of a plug provided with assembly holes of other configurations. Main part longitudinal sectional view of TV support arm and swivel member incorporating hinges of other configurations IX-IX sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support stand 2 Leg part 3 Support pillar 4 Rotating member 5 Television support arm 5a Lower frame 6 Liquid crystal television 7 Rotating shaft 10 Hinge 11 1st hinge component 12 Second hinge component 13 Shaft member 14 Torsion spring 14a Engagement part 14b Press part 14c Straight part 15 Torsional force application means 16 Rotation range restriction means 17 Operation resistance application means 18 Screw member 20 First shaft hole 21 Second shaft hole 22 Engagement surface 23 Plug 24 Engagement surface 25 First assembly hole 26 Second assembly hole 27 Engagement hole 28 Screw hole 29 Adjustment screw 30 Engagement protrusion 31 Engagement recess 32 Front wall part 33 Rear wall part 35 Guide hole 36 Nut member 37 Guide groove 38 Press member 39 Belleville spring 40 Press screw 25A 1st assembly hole 26A 2nd assembly hole 41 Holding part 4A Turning member 11A 1st hinge structure part 12A 2nd hinge structure part 20A 1st shaft hole 28A G hole 29A Adjustment screw 50 Hinge 51 Shaft member 52 Torsion spring 52a Straight part 52b Straight part 53 Torsional force applying means 54 Connection shaft 55 Second shaft hole 56 Operation member 57 Spring accommodating part 58 First engagement hole 59 Second engagement Hole 60 Notch

Claims (4)

A pair of first hinge components spaced apart from each other;
A second hinge component disposed between the first hinge components;
A pair of shaft members that are assembled to the first hinge constituent members so as not to rotate relative to each other, and whose inner end portions are rotatably attached to the second hinge constituent members, so that the hinge constituent members are rotatably connected. When,
A torsion spring comprising a torsion bar formed on both end portions with engaging portions engaging with both first hinge components so as not to rotate relative to each other, and formed with a pressing portion projecting outward in the middle portion;
A torsional force applying means for applying a torsional force to the torsion spring after the torsion spring is assembled by pressing the pressing portion of the torsion spring in the torsion direction, assembled to the second hinge component;
A torsion spring type hinge characterized by comprising: An assembly hole having a diameter larger than the length of the engagement portion is formed at the assembly position of the torsion spring in the shaft member, and an elongated engagement hole is formed in the rear end portion of the assembly hole to engage the engagement portion. The torsion spring type hinge according to claim 1 . The torsion spring hinge according to claim 1 or 2, further comprising operation resistance applying means for applying operation resistance to relative rotation between the first hinge component and the second hinge component. The torsion spring hinge according to any one of claims 1 to 3 , further comprising a rotation range limiting means for limiting a relative rotation range between the first hinge component and the second hinge component.

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