ES2546300T3 - Adjustable angle hinge and sofa - Google Patents

Adjustable angle hinge and sofa Download PDF

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Publication number
ES2546300T3
ES2546300T3 ES13194611.3T ES13194611T ES2546300T3 ES 2546300 T3 ES2546300 T3 ES 2546300T3 ES 13194611 T ES13194611 T ES 13194611T ES 2546300 T3 ES2546300 T3 ES 2546300T3
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Spain
Prior art keywords
gear
inclination
wedge
state
floating wedge
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Active
Application number
ES13194611.3T
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Spanish (es)
Inventor
Tadanobu Yamashita
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Koyo Giken KK
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Koyo Giken KK
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Filing date
Publication date
Priority to JP2013027347A priority Critical patent/JP5555341B1/en
Priority to JP2013027347 priority
Application filed by Koyo Giken KK filed Critical Koyo Giken KK
Application granted granted Critical
Publication of ES2546300T3 publication Critical patent/ES2546300T3/en
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/026Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/38Support for the head or the back for the head

Abstract

An adjustable angle hinge having a construction in which: a first element (1) and a second element (2) having a gear portion (4) pivot so that they oscillate; a floating wedge element (6) is provided, of which one face is a serrated face (7) coupled with the gear portion (4) and another face is a contact face (9) that makes contact with a wedge face (8) formed on the side of the first element (1); the relative oscillation of the first element (1) and the second element (2) in a direction of inclination (B) is restricted in a coupled state in which the toothed face (7) and the gear portion (4) are coupled; a collected state is obtained by moving the floating wedge element (6) so that it separates from the gear portion (4) to release the engagement of the toothed face (7) and the gear portion (4) by the relative oscillation of the first element (1) and the second element (2) in a vertical direction (A) to a final vertical position (P0); and the relative oscillation of the first element (1) and the second element (2) in the direction of inclination (B) is made possible in the collected state: characterized in that recovery means (10) are provided, to recover the element of floating wedge (6) of the state collected to the state coupled with the gear portion (4) by a return action (M2) of a predetermined small angle (θ) in the vertical direction (A) during a tilt action (M1) to oscillate relatively the first element (1) and the second element (2) from the final vertical position (P0) in the direction of inclination (B).

Description

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DESCRIPTION
Adjustable angle hinge and sofa
5 This invention relates to an adjustable angle hinge and a sofa. A hinge that is similar to that of the invention is described in EP 1510150 A2.
A chair without legs, shown in a perspective view in Figure 19, for example, having a seat part 31 and a backrest part 32, is provided with an articulation hinge (adjustable angle hinge) having a mechanism for adjusting the angle between the backrest part 32 and the seat part 31 to adjust the angle of inclination of the backrest part 32.
The applicant of the present invention proposed an adjustable angle hinge constructed so as to randomly adjust the angle formed by a first element of the side of the seat part 31 and a second element of the side of
15 the backing part 32 (referring to Japanese patent No. 5091362).
The adjustable angle hinge disclosed by Japanese Patent No. 5091362 is constructed to enable the oscillation of the second element towards the first element in the sense of vertical position and to maintain a desired inclination angle with restriction of the oscillation in the direction of inclination with multiple stages
The conventional adjustable angle hinge is provided with a gear portion formed in the second element and a floating wedge element of which one side is a serrated face that engages with the gear portion and another side is a contact face that makes contact with a wedge face of the first element and the oscillation of the second element towards the first element in the direction of inclination is restricted by the function
25 wedge of the floating wedge element. In a final vertical position in which the angle formed by the first element and the second element is approximately 90 °, the coupling of the floating wedge element and the gear portion is released, the aforementioned wedge function is canceled and the Second element swings freely in the direction of inclination.
However, when the coupling of the floating wedge element and the gear portion is released and the wedge function of the floating wedge element is canceled, the wedge function cannot be recovered until a horizontal opening state in which the angle formed by the first element and the second element is 180º. When a sufficient space cannot be maintained behind the backrest part of the chair without legs of Figure 19, the backrest part cannot be opened horizontally and has to be forcefully opened by raising the part of
35 seat This causes the disadvantage of misuse and laborious operation.
Therefore, it is an object of the present invention to provide an adjustable angle hinge with which the restricted oscillation state recovers easily in a random position during the oscillation of the backing part from the final vertical position to the state Horizontal opening and angle adjustment occurs quickly and smoothly.
This object is solved in accordance with the present invention by an adjustable angle hinge that includes features of claim 1. In addition, detailed embodiments are described in dependent claims 2 and 3.
The present invention will be described with reference to the accompanying drawings, in which:
Figure 1 is an exploded perspective view showing an embodiment of the present invention; Figure 2 is a perspective view of an adjustable angle hinge of the present invention in an assembled and in use state; Figure 3 is a perspective view of a main portion in which a first element and a cover element are omitted; Figure 4 is a cross-sectional view of a main portion of the adjustable angle hinge of the present invention;
Figure 5 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 6 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 7 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 8 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 9 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention;
Figure 10 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention;
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Figure 11 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 12 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention;
Figure 13 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 14 is a cross-sectional view of the main portion of the adjustable angle hinge of the present invention; Figure 15 is an exploded perspective view showing another embodiment of the present invention; Figure 16 is a perspective view of the other embodiment of the present invention in an assembled and in use state; Figure 17 is a front view of the other embodiment of the present invention in which a cover element is omitted;
Figure 18 is a perspective view showing a sofa of the present invention; and Figure 19 is a perspective view showing a chair without legs.
Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.
An adjustable angle hinge of the present invention, for example, used for a sofa having a reclining support part as shown in a perspective view of Figure 18, has an angle adjustment mechanism for adjusting the angle of inclination. of the support part. Or, the adjustable angle hinge is arranged in a connection portion 33 between a seat part 31 and a back part 32 to adjust the angle of
25 inclination of the backrest part 32 in a chair without legs having the seat part 31 and the backrest part 32 as shown in figure 19 and can be used as an articulation hinge (connection hinge) to connect the seat part 31 and the back part 32. The adjustable angle hinge 30, in addition to the sofa and the chair without legs, can be used to connect seat parts and backrest parts to a bed, reclining chair, etc. ., or use as hinge of articulation in headrests, footrests, etc.
As shown in Figures 1 to 3, the adjustable angle hinge of the present invention, in which a first element 1 and a second element 2 having a gear portion 4 are connected so that they oscillate around a first axis C1, is provided with a floating wedge element 6 of which one side is a serrated face 7 coupled with the gear portion 4 and another side is a contact face 9 for making contact with a wedge face 8
35 formed on the side of the first element 1.
As shown in Figure 4, in a coupled state in which the contact face 9 of the floating wedge element 6 makes contact with the wedge face 8 and the toothed face 7 and the gear portion 4 are coupled, the oscillation of the first element 1 and the second element 2 relatively in a direction of inclination (opening direction) B is restricted (stopped). And the first element 1 and the second element 2 oscillate relatively in a vertical direction (folding direction) A to a vertical end position P0 as shown in figure 10 so that it constitutes a collected state in which the floating wedge element 6 moves and separates from the gear portion 4 to release the engagement of the gear portion 4 and the toothed face 7, and the first element 1 and the second element 2 oscillate freely in the direction of inclination B in the collected state .
The first element 1 has a housing portion 23 having a pair of facing wall portions 17 and a cylindrical joint portion 18. A through hole 21 in which a pivot shaft 24 and a wedge-shaped window portion 5 are inserted to movably support the floating wedge element 6 are formed in the housing portion 23 (facing wall portions 17) . The wedge-shaped window portion 5 has the wedge-shaped face 8 in an arc-shaped outward direction when viewed taking the side of the first axis C1 as the center. The wedge-shaped window portion 5 has a collection space 15 for storing the floating wedge element 6 separated from the gear portion 4.
The second element 2 has two mutually parallel gear plate portions 45 and a joint portion
Cylindrical 55 19. The gear portion 4 is formed in an arc peripheral edge portion of the gear plate portion 45 of which its center is the first axis C1 for a range of, for example, an angle of centered from 100º to 120º. The floating wedge element 6 and the gear portion 4 are coupled in two positions in the sense of width and all the teeth of the toothed face 7 are coupled simultaneously with the gear portion 4. An protruding portion 14 is formed in a start portion and at an end portion of the gear portion 4. A receiving hole of the shaft 22 is formed in the gear plate portion 45 to insert the rotation shaft 24. And 13 to 20 teeth are formed in the serrated face 7 of the floating wedge element 6 and more than 40 teeth, more preferably between 45 and 65 teeth, are formed in the gear portion 4. Thus, the number of angle adjustment stages can be made to be greater than 40
65 And the first element 1 is provided with a spring element 16 for making contact and elastically pushing the floating wedge element 6 in one direction to be pressed against the gear portion 4.
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The adjustable angle hinge of the present invention is provided with recovery means 10 which recover the floating wedge element 6 in the collected state to the state coupled with the gear portion 4 by means of a return action M2 of a predetermined small angle  in the vertical direction A during the tilting action M1 in which the first element 1 and the second element 2 in the vertical end position P0
5 oscillate relatively in the direction of inclination B.
In the embodiment shown in Figures 1 to 14, the recovery means 10 are provided with a compressed friction plate 13 pressurized with a small frictional force with the second element 2 so that it slides and limited to the first element 1 so that it rotates within a range of the predetermined small angle  and a lever element 3 whose end 3a is connected (pivots so that it oscillates a small angle) to the compressed friction plate 13 and swings freely in a predetermined range of angles with an intermediate portion such as fulcrum 42 and another end 3b is arranged to be pressed against the floating wedge element 6 in the collected state.
15 In the collected state shown in Figures 10 to 12, the floating wedge element 6 maintains the collected state (held in an uncompressed position V1 in which the end 3b of the lever element 3 does not press the floating wedge element 6 ) during the tilting action M1 of the first element 1 and the second element 2 in the direction of inclination B. By the return action M2 in the vertical direction A, as shown in figure 13, the compressed friction plate 13 is rotates by frictional force with the second element 2 at a predetermined small angle  and the lever element 3 (moved to a compressed position V2 in which the end 3b presses the floating wedge element 6) presses the floating wedge element 6 up to make the gear portion 4 and the toothed face 7 engage.
The lever element 3 is composed of high rigidity metal (or resin) formed approximately in shape
25 V. The end 3a has a short cylindrical head, fitted in an arc-shaped concave portion of the compressed friction plate 13 and held so that it oscillates freely. The lever element 3 is formed so that a lower face of the intermediate portion contacts the first element 1 in the fulcrum 42 and when the end 3a moves up and down as a rocker, the corresponding end 3b is move opposite down and up.
A turning hole 25 into which the rotating shaft 24 is inserted is formed in the center of the compressed friction plate 13 and an elongated hole 26 is formed through an overhang 43 that projects from a portion of the peripheral edge. And the compressed friction plate 13 has a pair of convex sliding portions 26 projecting on left and right side faces and plural portions of sliding part 27 curved in the direction of
35 left and right that bend in turn.
In the assembled and in use state, the compressed friction plate 13 is inserted into the inner faces of the gear plate portions 45 of the second element 2 to be compressed, the gear plate portions 45 conform to the wall portions facing each other 17 (housing portion 23) of the first element 1 to be held and the first element 1, the second element 2 and the compressed friction plate 13 rotate by inserting the rotation shaft 24 into the housing portion 23. An element of stopper pin 28 fixed to the first element 1 is inserted into the elongated hole 29 of the compressed friction plate 13 and the compressed friction plate 13 is joined so that it rotates around the first axis C1 as a center within the range of the small angle default .
45 And a resin cover element 20 is provided which surrounds the housing portion 23 of the first element 1.
The cover element 20, which has a bottom wall portion 20A covering the lower faces of the first element 1 and the second element 2, side wall portions 20B covering left and right side faces and a roof wall portion 20C covering portions such as the floating wedge element 6 in a unified manner, is fixed to the first element 1 by a metal hitch piece 35 having insertion holes
39. A slot-shaped opening portion 36 into which the second element 2 can be introduced when it oscillates in the vertical direction A is formed in a portion of the ceiling wall portion 20C and a lip 37 of a thin piece, whose width can be widened to slide in the second element 2, is arranged in both
55 extreme edges of the opening portion 36. The side wall portion 20B contacts or approaches the lateral end face of the floating wedge element 6 to prevent its fall and has a hole portion 38 in a position corresponding to the hole through 21. The hitch piece 35 is attached to the housing portion 23 of the first element 1 surrounded by the cover element 20 so as to support the side wall portions 20B with an elastic force, in addition, the axis of rotation 24 is inserts into the insertion holes 39, the hole portion 38, the receiving hole of the shaft 22, the turning hole 25 and the receiving hole of the shaft 22 to connect the first element 1, the second element 2, the element of cover 20 and the hitch piece 35. The bottom wall portion 20A may have a flexible tongue portion 40 separated from the side wall portion 20B and which can swing up and down.
65 The method of use (function) of the adjustable angle hinge of the present invention described above is explained.
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In the coupled state shown in Figure 4, the toothed face 7 of the floating wedge element 6 is coupled with the gear portion 4 and the contact face 9 contacts the wedge face 8 to restrict (stop) the relative oscillation of the first element 1 and the second element 2 in the direction of inclination B (even if an external force is given in the direction of inclination B to the second element 2) by the wedge function of the wedge element
5 floating 6.
Next, as shown in Figure 5, when a vertical positioning action M0 is initiated to oscillate the first element 1 and the second element 2 in the vertical direction A, the floating wedge element 6 moves slightly downward within the window portion 5 and the contact face 9 is separated from the wedge face 8 to form a slight gap d. In this case, the compressed friction plate 13 rotates in the direction of the arrow N (counterclockwise in the figures) by the friction force of the second element 2. The rotation of the compressed friction plate 13 is stopped by the pin element of stop 28 which makes contact with one end of the elongated hole 29.
15 As shown in Figure 6 and Figure 7, when the second element 2 oscillates in the vertical direction A in addition, the toothed face 7 of the floating wedge element 6 is separated from the gear portion 4 by the gap d and the serrated face 7 passes over the gear portion 4 with a clicking sound.
As in Figure 8, even if the second element 2 is oscillated in the direction of inclination B to the first element 1 during the vertical positioning action M0, the oscillation is restricted by the wedge function of the floating wedge element 6 and the inclination angle of the first element 1 and the second element 2 is retained (held fixed).
And in figure 9, the vertical positioning action M0 continues, the toothed face 7 passes repeatedly over the
25 gear portion 4 to the end of the gear portion 4 and the projecting portion 14 makes contact with the upper end of the floating wedge element 6.
As shown in Figure 10, when the first element 1 and the second element 2 oscillate in the vertical direction A even further to the final vertical position P0 in the state in which the projecting portion 14 makes contact with the floating wedge element 6, the floating wedge element 6 moves down (pushed down by the protruding portion 14) to the collection space 15 for storage and the toothed face 7 is separated from the gear portion 4. This is called been picked up In this case, the other end 3b of the lever element 3 is pushed by the lower end of the floating wedge element 6 and swings around the fulcrum 42 as a center for descending. This position of the lever element 3 is the uncompressed position V1. The element
Lever 3 35 oscillates to the uncompressed position V1, the end 3a prints a rotational force to the compressed friction plate 13 and the compressed friction plate 13 rotates in the direction of the arrow R (clockwise in the figures) only in the small angle . The lower end of the floating wedge element 6 hits the lower face of the wedge-shaped window portion 5 to stop and the second element 2 no longer oscillates in the vertical direction A beyond the final vertical position P0.
In the collected state, the floating wedge element 6 is stored in the collection space 15 and the coupling of the toothed face 7 and the gear portion 4 is released. Therefore, the blocking (restriction) in the direction of inclination B is released and the relative oscillation of the first element 1 and the second element 2 in the direction of inclination B (free state) is made possible.
45 Next, as shown in Figure 11, the tilting action M1 is started to oscillate the first element 1 and the second element 2 in the direction of inclination B, the rotation of the compressed friction plate 13, which stops it receives a frictional force (in the direction of the arrow R) with the left and right gear plate portions 45 of the second element 2, by the stopper pin 28 which makes contact with another end of the elongated hole 29. That is, the lever element 3 is held in the uncompressed position V1. Thus, during the tilting action M1 of the first element 1 and the second element 2 in the direction of inclination B, the end 3b of the lever element does not push the floating wedge element 6 upwards to maintain the collected state.
55 As shown in Figure 12, in the collected state, the wedge function of the floating wedge element 6 is canceled and the second element 2 is swung freely in the direction of inclination B to the first element 1 and opened in a desired angle of inclination.
In Fig. 13, when the return action M2 in the direction A for the predetermined small angle  is carried out during the oscillation (the inclination action M1) of the second element 2 in the direction of inclination B from the final vertical position P0 until the horizontal opening state, the compressed friction plate 13 rotates by the friction force of the second element 2 in the direction of the arrow N (counterclockwise direction in the figures). The compressed friction plate 13 pushes down the end 3a of the lever element 3 and the other end 3b presses (pushes down) the lower end of the floating wedge element 6. As described above, the lever element 3 in the uncompressed position V1 moves to the compressed position V2 together with the rotation of the compressed friction plate 13. The lever element 3 pushes the floating wedge element 6
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outside the collection space 15 upwards. The floating wedge element 6 pushed out of the collection space 15 is converted to (recovers the) coupled state in which the toothed face 7 engages with the gear portion 4.
5 In Figure 14, similar to Figure 4, the coupled state has been carried out, in which the toothed face 7 of the floating wedge element 6 is coupled with the gear portion 4 and the contact face 9 makes contact with the wedge face 8, the wedge function of the floating wedge element 6 is recovered and the relative oscillation of the first element 1 and the second element 2 in the direction of inclination B in the intermediate inclined position between the oscillation can be restricted (limited) final vertical P0 and the horizontal opening state.
In the present invention, which can be modified, a plate-shaped element can be used, for example, to press the contact face 9 of the floating wedge element 6 instead of the wedge-shaped window portion 5. AND the design and the dimensional ratio of the cover element 20 can be varied.
Especially, the lever element 3 described with Figures 1 to 14, as well as a connecting element for moving and pushing (carrying or bringing) the floating wedge element 6 out of the state collected in the opposite direction (clockwise) together with the rotation of the compressed friction plate 13 (counterclockwise) for the small angle  of figure 12 to figure 13, various designs can be modified.
Next, another embodiment of the adjustable angle hinge of the present invention is described with Figures 15 to 17.
The embodiment in Figures 15 to 17 is provided with a pair of circular shaped wall portions 62 whose center is an oscillating axis L, four wedge-shaped window portions 65 arranged symmetrically
Rotational 25 whose axis of symmetry is the oscillation axis L in each of the wall portions 62, a pair of movable floating wedge elements 6 in the wedge-shaped window portions (two of four) 65, arranged in positions with 180 ° rotational symmetry with the oscillation axis L as the symmetry axis and having a serrated face 7 on one side, a pair of arc-shaped gear portions 4 arranged between the wall portions 62 and formed as external teeth which are coupled with the toothed face 7 around the oscillation axis L as the center and spring wires 66 to always elastically push the floating wedge elements 6 towards the gear portions 4.
A first element 1 is composed of facing plate pieces 61 and formed so as to include the gear portions 4 between the wall portions 62. And a concentric central hole is formed with the axis of
35 oscillation L through the wall portion 62. A second element 2 has the gear portions 4 in a joined part portion disposed between the wall portions 62 and a non-circular hole 73 is formed through the central portion of the part portion joined in correspondence with the central hole of the wall portion 62. The first element 1 and the second element 2 are connected by a turning element 63 so that they oscillate around the oscillation axis L. The turning element 63 has a non-circular portion 86 that can be adjusted in the non-circular hole 73.
In the wedge-shaped window portion 65, whose inner side near the oscillation axis L is an arcuate face, an arc-shaped wedge face 8 is formed on an outer side. The wedge face 8 is eccentric from the oscillation axis L and is formed as a gap between the wedge face 8 and the gear portion 4 is made
45 gradually smaller (closes) towards the clockwise direction in Figure 17. And the wedge-shaped window portion 65, in which a floating stepped portion is formed to guide the floating wedge element 6 protruding from the face arched on the inner side, it has a collection space 15 for storing the floating wedge element 6 in a state released from the engagement of the toothed face 7 and the gear portion 4.
Each of the pair of floating wedge elements 6 is inserted respectively into each of the wedge-shaped window portions 65 arranged with 180 ° rotational symmetry. The floating wedge elements 6 are formed slightly larger than the interval dimension of the wall portions 62 and both end portions protrude from the outer faces of the wall portions 62 when inserted into the wedge-shaped window portion 65 In the floating wedge element 6, one side is the serrated face 7, another side is a contact face
55 9 for making contact with the wedge face 8 and on a rear edge portion of the toothed face 7 an inclined guide face 64 is formed to make contact with the floating stepped portion of the inner side of the window-shaped portion of wedge 65 and guide itself in a sense of separation with respect to the gear portion 4.
The pair of gear portions 4 is formed as external teeth in positions with rotational symmetry at 180 ° with the oscillation axis L as an axis of symmetry in the arc-shaped exhaust window portions 68 in which the wedge elements are inserted floating 6 and having a configuration with which hardly a concentration of tensions is generated in the portion of the joined piece that has the non-circular hole 73. An overhanging introduction portion for pushing the floating wedge element 6 into the collection space 15 is formed on one side of the end portion (coupling end portion) of the gear portion 4 and an overhanging extraction portion for removing the floating wedge element 6 from the collection space 15 is formed on another
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end portion side (coupling start portion).
The spring wire 66, of which one end is straight and the other end is curved in a hook or circle, is attached to a support pin that protrudes from the outer side face of the wall portion 62. The wire
5 spring 66, pressed against the contact face 9 of the floating wedge element 6 and elastically deformed in an arc, always elastically pushes the elastic wedge element 6 (with a recovery force) in a direction towards the gear portion 4.
The adjustable angle hinge of the present invention is provided with recovery means 70 that recover the floating wedge element 6 from the collected state to the state coupled with the gear portion 4 by means of a return action M2 of a predetermined small angle  in the vertical direction A during the tilting action M1 in which the first element 1 and the second element 2 in the final vertical position oscillate relatively in the direction of inclination B.
The recovery means 70 are provided with a washer element 72 that rotates towards the wall portion 62 in a range of the predetermined small angle , an oscillation element 71 whose end 71a is locksably connected to the washer element 72 and freely oscillates in a range of the predetermined angle with an intermediate portion such as fulcrum and another end 71b is arranged to be pressed against the floating wedge element 6 in the collected state and a compressed friction element 75, which has an adjustment hole 69 not circular in which the turning element 63 is adjusted and an elastic portion 74 that rotates with the rotating element 63 and slides in the washer element 72 with an elastic thrust in an internal axial direction.
In the collected state in which the coupling of the toothed face 7 of the floating wedge element 6 and the gear portion 4, the floating wedge element 6 maintains the collected state (maintained in a position in which the
25 end 71b of the swing element 71 does not press the floating wedge element 6) during the tilting action M1 of the first element 1 and the second element 2 in the direction of inclination B. By the return action M2 in the vertical direction A , the washer element 72 is rotated by frictional force with the elastic portion 74 at the predetermined small angle  and the oscillation element 71 (which moves to a position where the end 71b presses the floating wedge element 6 ) press the floating wedge element 6 (so that it is removed from the collection space 15) to obtain the coupling of the gear portion 4 and the toothed face 7.
As shown in FIG. 15, the washer element 72 is in the form of a washer with a circular hole portion 82 into which the pivot member 63 is inserted and which has a hook hole portion 84 which
35 corresponds to a small projection 83 protruding from the outer side face of the wall portion 62 and an arc-shaped split portion 85 at a peripheral edge. The small protrusion of the washer element 72 engages in a movable manner in the hitch hole portion 84 (with a slack) and rotating around the oscillation axis L as a center in a range of the predetermined small angle .
The oscillation element 71 is composed of high-rigidity metal (or resin) approximately V-shaped. The end 71a (shaped like a short cylinder) is fitted in the split arc-shaped portion 85 and locksably connected to the washer element 72. A pivot hole portion 81 is formed in an intermediate portion of the swing member 71 and a pivot shaft portion 67 protruding from the outer side face of the wall portion 62 is inserted into the portion of turning hole 81. For example, the swinging element 71 rotates in (the face
45 outer side of) the wall portion 62 so that the end 71a of the oscillation element 71 moves up and down like a rocker, the corresponding end 71b moves in an opposite way down and up.
In Fig. 15, the elastic portion 74 is in the form of a washer and a plurality of small convex portions 87 protrude from an end face. The elastic portion 74 is composed of an elastically deformable resin (or metal) and another end face of the elastic portion 74 is a sliding face 79 (which elastically pushes in the internal axial direction in an assembled and in use state described below) which is slide over the washer element 72.
55 The compressed friction element 75 is in the form of a washer and a plurality of small concave portions 88 are formed in correspondence with the small convex portions 87 of the elastic portion 74. The elastic portion 74 is joined by inserting the plurality of convex portions small 87 in the small concave portions 88 so that they rotate as a unit (rotate together) with the compressed friction element 75. And it is also preferable to form the elastic portion 74 with the compressed friction element 75 as a unit.
The compressed friction element 75 is disposed on an outer side of the washer element 72 and the elastic portion 74 makes contact with the external face of the washer member 72. The sliding face 79 of the elastic portion 74 is arc-shaped in a state uncompressed The compressed friction element 75 is supported by
65 thin disk cover elements 90 from the outer side in the direction of the oscillation axis L.
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The wall portions 62, the gear portions 4, the washer elements 72 and the compressed friction elements 75 are surrounded by the cover elements 90 and are concentrically rotated by means of a coupling element 89 in both end portions of the turn 63.
5 The function of the adjustable angle hinge shown in Figures 15 to 17 is explained.
In the coupled state shown in Figure 17, the toothed face 7 of the floating wedge element 6 is coupled with the gear portion 4 and the contact face 9 contacts the wedge face 8 to restrict (stop) the relative oscillation of the second element 2 with respect to the first element 1 in the direction of inclination B.
Then, when the second element 2 swings in the vertical direction A, the floating wedge element 6 moves slightly in the window portion 5 and the contact face 9 separates from the wedge face 8 to form a slight gap d. When the second element 2 oscillates further in the vertical direction A, the inclined guide face 64 of the floating wedge element 6 ascends the stepped portion of the window portion 65, the serrated face
15 7 of the floating wedge element 6 is separated from the gear portion 4 by the gap d and the toothed face 7 passes over the gear portion 4 with a clicking sound. Even if the second element 2 is swung in the direction of inclination B to the first element 1, the oscillation is restricted (stopped) by the wedge function of the floating wedge element 6 and the posture of the second element 2 is preserved ( keep fixed). In the oscillation in the vertical direction A, although a rotational force in the counterclockwise direction in the figures by the force of friction with the elastic portion 74 (the compressed friction element 75) acts on the washer element 72, the element of washer 72 remains engaged by the contact of the small projection 83 with the concave (engaging) portion 84. When the first element 1 swings further in the vertical direction A, the serrated face passes repeatedly over the gear portion 4 and the portion protruding thrust disposed on one side of the end portion (a coupling side of the end portion) of the gear portion 4 makes contact with the floating wedge element 6.
25 Although not shown in the figures, when the second element 2 swings further in the vertical direction A to obtain a vertical position free of blockage, in the state in which the protruding thrust portion makes contact with the wedge element floating 6, the floating wedge element 6 is pushed by the protruding thrust portion and moved to the collection space 15 for storage and the toothed face 7 is separated from the gear portion 4 (the collection state is obtained). In this case, the other end 71b of the swing element 71 is pushed by the floating wedge element 6 and swung, the end 71a of the swing element 71 pushes the washer element 72 and the washer element 72 rotates only at the small angle  in the clockwise direction of the figures.
35 In the collected state, the floating wedge element 6 is stored in the collection space 15 and the coupling of the toothed face 7 and the gear portion 4 is released. Thus, the blockage (oscillation restriction) is released. in the direction of inclination B and free oscillation of the second element 2 in the direction of inclination B is possible.
Next, the washer element 72, although receiving the rotational force in the clockwise direction by the frictional force with the elastic portion 74 when the second element 2 is oscillated in the direction of inclination B, is engaged by the contact of the small projection 83 with the concave (engaging) portion 84. That is, the oscillation element 71 is maintained without oscillation in the inclination action M1 of the second element 2 in the direction of inclination B and the floating wedge element 6 is maintained in The collected status.
45 When the return action M2 in the direction A for the small angle  is carried out during the tilting action M1 of the second element 2 in the direction of inclination B, the washer element 72 is rotated upon receiving the rotational force in the counterclockwise direction by frictional force with the elastic portion 74. The end 71a of the oscillation element 71 is pushed by the washer element 72 and the other end 71b of the oscillation element 71 pushes the floating wedge element 6 so that exit the collection space 15. The floating wedge element 6 removed from the collection space 15, which is pressed against the gear portion 4 by the spring wire 66, becomes in a coupled state in which the serrated face 7 is couples with the gear portion 4 (returns to the locked state).
55 In Figure 16, the coupled state is obtained, in which the toothed face 7 of the floating wedge element 6 is coupled with the gear portion 4 and the contact face 9 makes contact with the wedge face 8, is recovered the wedge function of the floating wedge element 6 and the oscillation of the second element 2 in the direction of inclination is restricted
B. As described above, the locked state is easily recovered in a random intermediate inclined position during the oscillation of the second element 2 in the direction of inclination B from the final vertical position and an angle adjustment is initiated by the oscillation from the intermediate inclined position in the vertical direction A.
In the adjustable angle hinge, which can be modified, a plate-shaped element can be used, for example, to press the contact face 9 of the floating wedge element 6 instead of the window portion (in
65 wedge shape) 65. And the design and dimensional relationship of the cover element 90 can be varied.
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Likewise, the number of gear teeth of the toothed face 7 and of the gear portion 4 can be increased by a number greater than the aforementioned and conversely, it can be decreased below the number mentioned above, depending on the case. The procedure for forming the gear teeth can be selected from various plastic forming (pressing), molding, roulette forming, etc.
5 Especially, the oscillation element 71 as shown in Figure 18, insofar as it is a connecting element for moving and pushing (carrying or bringing) the floating wedge element 6 out of the state collected in the opposite direction ( clockwise) together with the rotation of the washer element 72 (in a counterclockwise direction) to the small angle , it can be modified for various designs.
The turning element 63 has a regular hexagonal shaft portion and the non-circular hole 73 of the fixing part of the second element 2 is correspondingly regular hexagonal. The turning element 63 and the non-circular hole 73, insofar as they mutually adjust in a non-circular manner, can be various polygons, or other configurations.
15 The adjustable angle hinge of the present invention on a sofa having support parts 51 such as headrests, armrests and footrests as shown in Figure 18, is very convenient since the lock (tilt stop) in the direction of inclination B is recovered by the return action M2 in the direction A at the predetermined small angle  performed during the inclination action M1 of the support part 51 which oscillates from the final vertical position in the direction of inclination B and the part of support 51 is maintained in the intermediate inclined posture.
On the sofa, as shown in Figure 18, the weight of a person can be concentrated on the headrest and armrest and in many cases excessive external force is loaded on the frame element and the element
Frame 25 such as the headrest and armrest could be curved in the direction of inclination B. Conventional adjustable angle hinges present a problem since the lock (inclination stop) in the direction of inclination B cannot be recovered unless The headrest and armrest are tilted beyond the horizontal open posture due to the generation of a plastic deformation in the frame element.
With the adjustable angle hinge of the present invention, even when used on a sofa, the headrest and armrest can be held in the intermediate inclined posture by return in the vertical direction A during the tilting action M1 even if the element The frame is deformed plastically and bends in the direction of inclination B because the lock (tilt stop) can be recovered without the inclination of the headrest and the armrest beyond the horizontal open posture.
Also, the adjustable angle hinge of the present invention is used for a chair without legs, as shown in Figure 19, which has a seat part 31 and a back part 32 and provided with an adjustable angle hinge 30 which has the function of adjusting the angle in a connection portion 33 of the seat part 31 and the back part 32 so as to adjust the angle of inclination of the back part 32. With the adjustable angle hinge 30, it allows the oscillation of the back part 32 towards the seat part 31 in the vertical direction A, the oscillation of the back part 32 in the direction of inclination B is restricted and the oscillation (free) of the back part 32 is allowed in the direction of inclination B when releasing the restriction causing the backrest part 32 to be approximately vertical with respect to the seat part 31 to obtain a final vertical position T0, in addition, the restriction (stop of i nclination) in the direction of inclination B recovers
45 by means of the return action M2 in the direction A for the predetermined small angle  performed during the tilting action M1 of the backing part 32 which oscillates from the final vertical position T0 in the direction of inclination B and the backing part 32 remains in the intermediate inclined posture T1.
As described above, the adjustable angle hinge corresponding to the present invention can cause the floating wedge element 6 to certainly engage with the gear portion 4 and restrict the oscillation of the first element 1 and the second element 2 in the sense of inclination B by the small return action in the vertical direction A in a random position during the oscillation of the first element 1 and the second element 2 from the final vertical position P0 in the direction of inclination B since in the hinge of adjustable angle corresponding to the present invention, the first element 1 and the second element 2
55 having the gear portion 4 rotate so that they oscillate, the floating wedge element 6 is disposed, of which one face is the toothed face 7 coupled to the gear portion 4 and another face is the contact face 9 which makes contact with the wedge face 8 formed on the side of the first element 1, the relative oscillation of the first element 1 and the second element 2 in the direction of inclination B is restricted in the coupled state in which the toothed face 7 and portion of gear 4 are coupled, the collected state is realized by moving the floating wedge element 6 so that it separates from the gear portion 4 to release the engagement of the toothed face 7 and the gear portion 4 by the relative oscillation of the first element 1 and from the second element 2 in the vertical direction A to the final vertical position P0, the relative oscillation of the first element 1 and the second element 2 in the direction of inclination B in the collected state is made possible; and the recovery means 10 are provided, to recover the floating wedge element 6 from the collected state to the state coupled with the gear portion 4
65 by the return action M2 of the predetermined small angle  in the vertical direction A during the tilting action M1 to relatively oscillate the first element 1 and the second element 2 from the vertical position
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end P0 in the direction of inclination B. That is, once the coupling of the floating wedge element 6 and the gear portion 4 is released, the first element 1 and the second element 2 can be easily maintained with an inclination angle desired before the first element 1 and the second element 2 open horizontally to form an angle of 180 °.
5 Likewise, the floating wedge element 6 maintains the collected state without errors during the tilting action M1 and the floating wedge element 6 certainly moves by the return action M2 in the vertical direction A to obtain the coupled state of the portion of gear 4 and the toothed face 7 because the recovery means 10 are arranged with the compressed friction plate 13 slidably adjusted with the second
10 element 2 and restricted so that it rotates within a range of the predetermined small angle  and the lever element 3 of which one end 3a is connected to the compressed friction plate 13 and oscillates around the intermediate portion as a fulcrum within a predetermined angle range and another end 3b is arranged so that it presses against the floating wedge element 6 in the collected state and the floating wedge element 6 maintains the collected state during the tilting action M1 of the first element 1 and the second
15 element 2 in the direction of inclination B and the compressed friction plate 13 rotates by friction force with the second element 2 at the predetermined small angle  by the return action M2 in the vertical direction A and the lever element 3 press and move the floating wedge element 6 so that it engages with the gear portion 4 and the toothed face 7.
Also, the sofa of the present invention can maintain the support part 51 with a desired angle by a simple operation during the oscillation in the direction of inclination B once the support part 51 becomes the final vertical position since The sofa has the reclining support part 51 which uses the adjustable angle hinge described above to adjust the angle of inclination of the support part 51. Thus, it is very convenient to easily adjust the support part 51 to an inclination angle. desired even in the case
25 in which the lock (tilt stop) in the direction of inclination cannot be recovered without tilting the support part 51 such as a headrest or an armrest beyond the horizontal open posture due to the plastic deformation generated in the frame of the support part 51.

Claims (3)

  1. 1. An adjustable angle hinge that has a construction in which:
    5 a first element (1) and a second element (2) having a gear portion (4) pivot so that they oscillate;
    a floating wedge element (6) is provided, of which one face is a serrated face (7) coupled with the gear portion (4) and another face is a contact face (9) that makes contact with a wedge face (8) formed on the side of the first element (1);
    10 the relative oscillation of the first element (1) and the second element (2) in a direction of inclination (B) is restricted in a coupled state in which the toothed face (7) and the gear portion (4) are coupled ;
    a collected state is obtained by moving the floating wedge element (6) so that it separates from the gear portion (4) to release the engagement of the toothed face (7) and the gear portion (4) by the relative oscillation of the first element (1) and the second element (2) in a vertical direction (A) to a final vertical position
    15 (P0); and the relative oscillation of the first element (1) and the second element (2) in the direction of inclination (B) is made possible in the collected state: characterized in that recovery means (10) are provided, to recover the element of floating wedge (6) of the state collected to the state coupled with the gear portion (4) by a return action
    20 (M2) of a predetermined small angle () in the vertical direction (A) during an inclination action (M1) to relatively oscillate the first element (1) and the second element (2) from the final vertical position (P0 ) in the direction of inclination (B).
  2. 2. The adjustable angle hinge according to claim 1, wherein:
    The recovery means (10) are provided with a compressed friction plate (13) slidably pressed with the second element (2) and restricted so that it rotates within a range of the predetermined small angle () and a lever element (3) from which one end (3a) is connected to the compressed friction plate (13) and is swung around an intermediate portion as a fulcrum within a range of
    30 predetermined angle and another end (3b) is arranged to be pressed against the floating wedge element (6) in the collected state; Y
    the floating wedge element (6) maintains the state collected during the tilting action (M1) of the first element (1) and the second element (2) in the direction of inclination (B) and the compressed friction plate (13) rotated by frictional force with the second element (2) at the predetermined small angle () by the action of
    35 return (M2) in the vertical direction (A) and the lever element (3) presses and moves the floating wedge element
    (6) to fit the gear portion (4) and the toothed face (7).
  3. 3. A sofa that has a reclining support part (51) characterized by using the adjustable angle hinge of the
    claim 1 or claim 2 for adjusting an angle of inclination of the support part (51). 40
    eleven
ES13194611.3T 2013-02-15 2013-11-27 Adjustable angle hinge and sofa Active ES2546300T3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013027347A JP5555341B1 (en) 2013-02-15 2013-02-15 Angle adjustment bracket and seat chair
JP2013027347 2013-02-15

Publications (1)

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ES2546300T3 true ES2546300T3 (en) 2015-09-22

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Application Number Title Priority Date Filing Date
ES13194611.3T Active ES2546300T3 (en) 2013-02-15 2013-11-27 Adjustable angle hinge and sofa

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EP (1) EP2767188B1 (en)
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ES (1) ES2546300T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5555341B1 (en) * 2013-02-15 2014-07-23 直伸 山下 Angle adjustment bracket and seat chair
JP5611416B1 (en) * 2013-05-20 2014-10-22 山下 直伸 Angle adjustment bracket
CN104172768B (en) * 2014-08-28 2017-01-11 浙江凯帝家具有限公司 Soft chair with adjustable backrest angle
KR101538031B1 (en) * 2014-12-31 2015-07-22 허남요 The chair that have a variable armrest
EP3058850A1 (en) * 2015-02-23 2016-08-24 Koyo Giken Kabushiki Kaisha Angular adjustment tool and sofa
JP6105102B2 (en) * 2015-02-23 2017-03-29 向陽技研株式会社 Angle adjustment bracket and sofa
CN106037320A (en) * 2016-06-24 2016-10-26 周海梅 Quickly locked row-seating device
CN105996523A (en) * 2016-06-24 2016-10-12 周海梅 Row seat device allowing independent adjustment of sitting posture
CN106108446A (en) * 2016-06-24 2016-11-16 周海梅 A kind of novel platoon seat realizing quick lock in
DE102017110246A1 (en) * 2017-05-11 2018-11-15 Hettich Franke Gmbh & Co. Kg Swivel fitting and furniture

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Publication number Priority date Publication date Assignee Title
JP3766669B2 (en) * 2003-08-29 2006-04-12 直伸 山下 Angle adjustment bracket
JP4519555B2 (en) * 2004-07-28 2010-08-04 株式会社ヒカリ Joint device
JP4296223B1 (en) * 2008-05-23 2009-07-15 直伸 山下 Angle adjustment bracket
JP4418519B1 (en) * 2009-05-22 2010-02-17 直伸 山下 Angle adjustment bracket
JP5584087B2 (en) * 2010-10-19 2014-09-03 向陽技研株式会社 Angle adjustment bracket for seat and connecting structure for seat
JP5091362B1 (en) * 2012-03-21 2012-12-05 直伸 山下 Angle adjustment bracket
JP5555341B1 (en) * 2013-02-15 2014-07-23 直伸 山下 Angle adjustment bracket and seat chair

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CN103989339A (en) 2014-08-20
EP2767188B1 (en) 2015-07-15
JP5555341B1 (en) 2014-07-23
EP2767188A1 (en) 2014-08-20
CN203662307U (en) 2014-06-25
JP2014155570A (en) 2014-08-28
CN103989339B (en) 2017-05-10

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