JP3763913B2 - Torque automatic adjustment type hinge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge in which a rotating blade fixed to a rotating body and a fixed blade fixed to a main body portion are combined so that they can be rotated relative to each other, and more particularly to a hinge used for a self-closing door. .
[0002]
[Prior art]
Conventional hinges are usually components that simply connect a main body side such as a door frame and a rotating body side such as a door so as to be relatively rotatable. Further, a hinge having a certain resistance torque and preventing the natural fall and closing due to the gravity of the cover, such as a cover hinge of a copy machine, is known. However, a hinge that can give a torque that changes at a rotational position so as to be suitable for opening and closing a door or the like has not been known.
[0003]
On the other hand, in the automatic closing door, a hydraulic torque adjusting device is attached separately from the hinge. However, such a device is large and requires extra cost and space for installation.
[0004]
[Problems to be solved by the invention]
This invention solves the said problem in a prior art, and makes it a subject to provide the hinge which can provide a torque so that it may be suitable for opening and closing of rotary bodies, such as a door.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention relates to a hinge that combines a rotating blade fixed to a rotating body and a fixed blade fixed to a main body portion so that they can be rotated relative to each other.
An outer member integrated with either the rotating blade or the fixed blade, an engaging member integrated with either the rotating blade or the fixed blade, and the engaging member and the outer member A bearing provided between the two end portions, an end portion supported by the engaging member, an intermediate portion eccentric from the both end portions, and a torque transmitting portion engaged so as to transmit torque to the engaging member. An eccentric member, a regulating member that is supported by the outer member and regulates relative rotation between the outer member and the intermediate portion, and the regulating member is in contact with the intermediate portion via the rotating member. And the rotating member provided at the intermediate portion .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a configuration example of a hinge to which the present invention is applied, and FIGS. 2 to 4 show diagrams of the components. The overall configuration of the hinge will be described with reference to FIG. 1 and other drawings.
The hinge is configured by combining the rotary blade 1 fixed to the door 100 as a rotating body and the fixed blade 2 fixed to the frame 200 as a main body portion so that they can be rotated relative to each other. A cylinder 11 as a member, an eccentric shaft 3 as an eccentric member, an intermediate ring 21 as an engaging member, screws 4 and 5 as a regulating member, a needle bearing 6 as a rotating member, and the like. In FIG. 1, only one hypothetical position of the screws 4 and 5 is shown, but these are actually provided at positions as shown in FIG. 6, for example.
[0007]
As shown in FIG. 2, the rotary blade 1 includes a blade portion 1 a and a mounting portion 1 b for mounting the cylinder 11, and an appropriate number of mounting screw holes 1 c are provided in each. In FIG.2 (b), the expansion | deployment state before the semicircle bending process of the attachment part 1b is shown. In this example, the rotary blade 1 and the cylinder 11 are separated and combined with each other with a screw or the like, but the whole may be formed of one member.
[0008]
As shown in FIG. 3, the fixed blade 2 includes a blade portion 2 a and an attachment portion 2 b for attaching the intermediate ring 21, and an appropriate number of screw holes 2 c for attachment are provided in each. FIG. 3B shows the unfolded state before the blade portion 2a and the attachment portion 2b are bent along the folding lines A and B, respectively. The bending angles at lines A and B are 45 ° and 90 °, respectively. In this example, the fixed blade 2 and the intermediate ring 21 are separated from each other and joined together by screws or the like, but the whole may be formed of one member.
[0009]
As shown in FIG. 4, the cylinder 11 includes a screw hole 11 a for attaching to the rotary blade 1 and a screw hole 11 b that is screwed with and supports the screws 4 and 5. Bearings 7 are attached to both ends of the cylinder 11. Thereby, the cylinder 11 forms a support relationship capable of relative rotation with both end portions (curved portion 31 described later) of the eccentric shaft 3 via the bearing 7 and the intermediate ring 21. In this example, the outer member is formed as the cylinder 11. However, the screws 4 and 5 can be supported, and a support relationship is formed so as to be relatively rotatable with both ends of the eccentric shaft 3 via the bearing 7 and the like. Any member that can be used is not necessarily cylindrical.
[0010]
The eccentric shaft 3 includes a curved surface portion 31 as both end portions that form a rotatable support relationship with the cylinder 11 via the bearing 7 and the intermediate ring 3 as described above, an eccentric portion 32 as an intermediate portion that is eccentric from this portion, A shaft end portion 33 as a torque transmitting portion for transmitting torque, an intermediate shaft portion 34 for coupling them, and the like are provided. As a result, the eccentric shaft 3 is rotatable relative to the cylinder 11 around the center O, which is the center of the curved portions 31 at both ends and the center of the cylinder 11. However, in this example, when the fixed blade 2 is fixed, the eccentric shaft 3 cannot rotate and the cylinder 11 rotates.
[0011]
The eccentric portion 32 has a center O ₀ at a position eccentric from the center O by a distance e, and a needle bearing 6 as a rotating member that makes the eccentric portion and the screws 4 and 5 in rolling contact with each other is mounted on the outer side thereof. ing. For this reason, the outer ring 6 a of the needle bearing 6 can rotate relative to the eccentric portion 32 by rolling.
[0012]
The shaft end portion 33 includes both side surfaces and end surfaces that are flat surfaces, and the eccentric shaft 3 is positioned in the axial direction when the end surface comes into contact with the tip surface of the cover ring 8. The cover ring 8 is fixed to the attachment portion 2b of the fixed blade 2 together with the intermediate ring 21 with screws. Note that the shaft end portion 33 for transmitting torque may be a keyway, a square hole, or the like. The intermediate shaft portion 34 is a solid cylindrical shaft. However, depending on the application, it may be a hollow shaft or a shaft whose bending rigidity (corresponding to the second moment of section) varies depending on the bending direction.
[0013]
The intermediate ring 21 is attached to the fixed blade 2 and engages with the shaft end portion 33 so that torque can be transmitted. That is, the hole portion is in contact with both side surfaces of the shaft end portion 33, and torque is transmitted between the fixed blade 2 and the eccentric shaft 3 through this contact relationship. However, in this example, the rotation of the eccentric shaft 3 is restrained via the intermediate ring 21 by fixing the fixed blade 2 as described above. That is, the torque transmission part only serves to prevent the eccentric shaft 3 from rotating. The tip protruding portion of the intermediate ring 21 transmits the shaft end reaction force of the bending load generated on the eccentric shaft 3 to the cylinder 11 via the bearing 7.
[0014]
FIG. 5 shows an example of attachment of hinges, and FIG. 6 shows a mounting state of the screws 4 and 5 at this time. In FIG. 5, the hinged rotary blade 1 and fixed blade 2 are respectively attached to a door 100 and a frame 200 that partition the room 400 having the wall 300 on one side and the outdoor 500. The door 100 is in the fully closed position in the solid line, and is in the fully open position rotated about 110 ° from now in the two-dot chain line. At this time, the blade portion 2a of the fixed blade 2 as shown in FIG. 1 is fixed in the upper center line CL ₁ direction position, the rotary blade 1, the position of the center line CL ₁ (fully closed) and which from 110 ° rotates between the position of the open line CL ₂ (fully open).
[0015]
As shown in FIG. 6, in such a hinge mounting state, the eccentric shaft 3 has the eccentric portion 32 and the outer ring 6 a on the center line CL ₁ when the outer ring 6 a is assumed not to contact the screws 4 and 5. It is positioned by the fixed blade 2 so as to be centered on a center O ₀ which is separated from the center O by an eccentric amount e. The position of the outer ring 6a at this time is indicated by a solid circle C. This position is the same as in the state of FIG. The screw 4 is provided at a position indicated by a center line CL ₃ rotated about 20 ° counterclockwise from the line CL ₂ when the rotary blade 1 is at the position of the fully open line CL ₂ . The screw 5 is provided at the position of the center line CL ₁ (position shifted by 90 ° from the screw 4) rotated about 90 ° in the same direction.
[0016]
The screws 4 and 5 are supported by being screwed into the screw holes 11b of the cylinder 11 as described above, and restrict rotation of the cylinder 11, the eccentric portion 32, and the outer ring 6a. Therefore, the tips 4a and 5a of the screws 4 and 5 are adjusted by the advancement and retraction of the screws, and are respectively set at the protruding positions as illustrated. In the state shown in the figure, each region protrudes into the outer ring 6a by a range indicated by a right oblique line and a left oblique line. These are counterclockwise on the circles C ₁ (outer circles indicated by a one-dot chain line) and C ₂ (inner circles indicated by a two-dot chain line) centering on the center O, respectively, with the rotation of the rotary blade 1 and the cylinder 11. Therefore, the amount of protrusion changes as shown by a right oblique line (one-dot chain line) and a left oblique line (two-dot chain line). Then, the tip 4a and 5a, respectively, the circle C ₁ and C ₂ are protruded so as to intersect the circle C and a point from the center line CL ₁ of the position of the angle of 150 ° and 180 ° on both sides P, P and Q Set to position. Hereinafter, the screws 4 and 5 are referred to as a 150 ° screw and a 180 ° screw, respectively.
[0017]
The above hinge has the following effects.
FIG. 7 is a view for explaining the operation when torque is generated in the screw 4 and the cylinder 11 when the screw 4 rotates together with the cylinder 11 and the tip of the screw reaches the positions 4a-1 to 4a-4. FIG.
[0018]
When the screw 4 is at the center line CL _1, the tip 4a-1 Press outer ring 6a in the force F ₁ as shown. In this case, since the outer ring 6a is rotatable relative to the eccentric portion 32, the tip 4a-1 Press eccentric portion 32 is an outer ring 6a integrally with the center O ₀ direction. At the position of this tip, the pushing direction is the center O direction, and the eccentric portion 32 is pushed by the protrusion amount δ ₁ of the screw 4 in that direction and moves to the O ₁ position.
[0019]
At this time, if it is assumed that the force F ₁ is supported by the spherical portions 31 at both ends of the eccentric shaft 3 and only the bending load acts on the eccentric shaft, the eccentric shaft receives the bending load as a simple support beam of the span L and receives δ. Only ₁ will bend. At this time, the pressing force F ₁ acting between the screw 4 and the outer ring 6a is
F ₁ = 48EIzδ ₁ / L ³ = Kδ ₁ (K = 48EIz / L ₃ )
become. In the figure, the size of F ₁ is indicated by the same length as δ ₁ . A force F ₁ ′ having the same magnitude as F ₁ and the opposite direction acts on the tip 4a-1. However, since these forces F ₁ and F ₁ ′ are forces in the direction of the center O as described above, torque for rotating the eccentric shaft 3 and the screw 4 and thus the cylinder 11 is not generated.
[0020]
When the outer ring 6a is pushed by the screw 4 at the position of 4a-2 rotated by an angle θ from 4a-1, the center O ₀ receives a force in the O ₀ direction from 4a-2 and is approximately the center O ₂ . Move to position. At this time, the movement amount of the center is δ ₂ . If this δ ₂ is generated only by the bending load, the forces F ₂ and F ₂ ′ acting between the outer ring 6a and the tip 4a-2 can be calculated by the above equation. In this case, since F ₂ and F ₂ ′ act at a position away from the center O by a distance d _2, torque T ₂ = F ₂ d for rotating the eccentric shaft 3 and the screw 4 and thus the cylinder 11 around the center O. ₂ = Kδ ₂ d ₂ T ₂ ′ = F ₂ ′ d ₂ = −Kδ ₂ d ₂
Occurs. However, since the eccentric shaft 3 is restrained from rotating by the fixed blade 2 through the intermediate ring 21, the rotating blade 1 moves by receiving torque through the screw 4 and the cylinder 11. This torque is clockwise torque, that is, torque that rotates the rotary blade 1 in the opening direction.
[0021]
At the position of the tip 4a-3 where θ is 90 ° with respect to the position of the tip 4a-2 shown with θ being about 45 °, as shown in the drawing, d ₃ is equal to d _{2 at} T ₃ = Kδ ₃ d ₃ . Although slightly larger, δ ₃ is about half of δ ₂ , so T ₃ is smaller than T ₂ . At the position where θ is 150 °, the protrusion amount of the tip 4a-4 of the screw 4 with respect to the outer ring 6a is zero, so T ₄ is zero.
[0022]
In the above, when the outer ring 6a is pushed at the tip of the screw 4, the eccentric shaft 3 receives only the bending load, and the eccentric portion 32 is bent from the tip of the screw 4 in the direction of the center O of the eccentric portion by the protruding amount of the screw 4. However, when the torque as described above is generated in the eccentric shaft 3, the eccentric portion 32 is bent due to bending as well as bending due to bending, and δ becomes bending twisting and bending. As a result, the position at which the center O ₀ of the eccentric portion 32 moves is shifted in the counterclockwise direction from the positions O ₂ and O ₃ shown in the figure. If the combined action of bending torsion is taken into consideration, such generated torque can be calculated with high precision, but the calculation is omitted because it is extremely complicated.
[0023]
FIG. 8 shows the result of experimental measurement of the torque generated by the torque generating action as described above.
In the figure, the position of the angle 0 is the center of the horizontal axis, four screws with protruding amount represents the state in which on the center line CL ₁ of FIG. 7, plus / minus angles are then threaded clockwise respectively / Indicates the angle rotated counterclockwise. The vertical axis represents the torque generated in the rotary blade 1 at each screw angle, and the plus / minus side represents the closing torque / opening torque, respectively. Also, the measured values of the 150 ° and 180 ° screws corresponding to the protruding amount of the screws 4 and 5 are indicated by white and black circles, respectively, and the measured values of the 120 ° and 90 ° screws are indicated by triangles and squares. Each torque curve is indicated by T-150 or the like.
[0024]
In this experiment, the torque T is maximum when θ is around 45 °. As described with reference to FIG. 7, since T∝δd, the torque of the experimental result has the same tendency as the approximate torque obtained by drawing in consideration of only bending. In the hinge of this example, the 150 ° screw 4 is at the 90 ° position when the door is fully opened, and the 180 ° screw 5 is at the 0 ° position shifted by 90 ° from this, and the screw 4 is minus 20 when the door is fully closed. The screw 5 is in the position of minus 110 ° in the position of °. Accordingly, the portion from the fully open to the fully closed state is indicated by a thick line with reference to the torque curve T-150 of the screw 4, and the torque curve T-180 of the screw 5 is overlaid on the screw 4 portion with a 90 ° phase shift. When indicated by a dotted torque curve T-180 / 90, the combined torque curve of the screw 4 and the screw 5 is indicated by a solid line Tc.
[0025]
According to this Tc, when the door is fully closed at θ = −20 °, a considerable amount of closing torque Ts remains, and the door is kept closed even without being locked. When [theta] is about 10 [deg.] to 70 [deg.] (30 [deg.] to 90 [deg.] as the door opening angle), the closing torque Tm is not so large, and the door can be automatically closed at an appropriate speed. When θ is 90 ° (the door opening angle is 110 °), an appropriate opening torque T ₀ remains, the door can be kept open without being fully locked, and the door is closed by applying a slight force. Can be closed. In addition, since the closing torque in the vicinity of the fully open position is small, it is possible to prevent problems when a simple spring is used, such as when the person opens the door and exits, the door suddenly closes and hits the person's bottom.
[0026]
In the above, the example which uses the hinge of this invention for the door of the full open angle of about 110 degrees was shown. In this example, the two screws 4 and 5 are used as the restricting member. However, when the application is fixed like the door, a restricting member whose protrusion amount can be adjusted is necessarily used like a screw. There is no need. For example, the convex part integral with the cylinder 11 or fixed to this may be sufficient.
[0027]
Of course, the number of restriction members is not limited to two, and may be one or three or more depending on the use of the hinge. For an application where it is sufficient to hold the open position at about 60 °, such as a lid of a copy machine, for example, the range R portion of the torque curve T-180 in FIG. Can be used. In that case, there is a closing torque at the closed position, and the closed state of the lid can be maintained. When the lid is fully opened, a maximum opening torque is generated against the natural drop force of the lid, and the open state of the lid can be reliably maintained. .
[0028]
Furthermore, for hinges for special applications, the cross section of the intermediate shaft portion 34 of the eccentric shaft 3 is made elliptical or other special shape, the secondary moment of the section is changed depending on the rotational position, and the bending composition is also changed. It is also possible to create a special torque curve. Alternatively, either or both of the screws 4 and 5 may be tilted so that the torque is tilted when a specific rotation angle is reached, and the torque changes suddenly with respect to the rotation angle.
[0029]
In this example, the needle bearing 6 is provided in the eccentric portion 32 as a rotating member that makes a rolling contact relationship between the screws 4 and 5 and the eccentric portion 32 of the eccentric shaft 3, but instead of such a configuration, the screw 4, 5 or the tip portion of the protruding member or the protruding member itself may be formed of a rotating member such as a roller. The eccentric member is also an eccentric shaft in this example, but it may be formed in a crank shape. Further, depending on the application, it is possible to adopt a configuration in which the eccentric portion 32 is brought closer to one side instead of the center of the both end support portions of the shaft.
[0030]
In the above description, the eccentric shaft 3 is fixed by the fixed blade 2 and the cylinder 11 is rotated by the rotating blade 1. On the other hand, the rotating blade 1 and the cylinder 11 shown in FIG. Of course, the eccentric shaft 3 may be rotated. In this case, the rotary blade 1 is attached to the frame 200 and the fixed blade 2 is attached to the door 100. In FIG. 6, the rotary blade 1 is fixed at the position of the line CL ₁ , and the screw 4 is set at the position of 4 ′ indicated by a two-dot chain line. Accordingly, when the door is opened and closed between the fully open position CL ₂ and the fully closed position CL ₁ , the eccentric shaft 3 is rotated via the intermediate ring 31, and the eccentric portion 32 and the outer ring 6 a are eccentrically rotated, the cylinder 11 The torque curve Tc shown in FIG. 8 can be obtained in exactly the same manner as rotating the.
[0031]
【The invention's effect】
As described above, according to the present invention, for example, the fixed blade and the engaging member are integrated, the engaging member is engaged with the torque transmitting portion of the eccentric member so that torque can be transmitted, and the fixed blade is attached to the door frame or the like. By fixing, a fixed torque can be transmitted to the eccentric member and the rotation of the eccentric member can be restricted. Further, even if the rotation of the eccentric member is constrained by integrating the rotary blade attached to the door or the like with the outer member so that the outer member and both end portions of the eccentric member can rotate, the rotary blade And the outer member can be rotated.
[0032]
On the other hand, the eccentric member has an intermediate portion eccentric from both end portions thereof, and the relative rotation between the intermediate portion and the outer portion is regulated by the regulating member supported by the outer member, so that the outer member is forcibly rotated. When, the intermediate portion is in contact with the regulating member, by the intermediate portion is bent with respect to both end portions, thus avoiding rotation regulating of the regulating member. In this case, since the rotating member is provided in a rolling contact relationship between the regulating member and the intermediate portion, only the contact surface pressure is transmitted between the regulating member and the intermediate portion without friction.
[0033]
The pressing force due to the contact surface pressure acts in the center direction of the intermediate portion, but since the center of the intermediate portion is eccentric from the center of both end portions of the eccentric member, the pressure contact force is not used except when the regulating member is at a specific position. As a result, a torque that relatively rotates between the eccentric member and the regulating member (and thus the outer member) is generated. In this case, the magnitude of the pressure contact force and the direction thereof vary depending on the rotation position of the regulating member. Therefore, by adjusting the rotation of the regulating member and the magnitude and direction of the generated torque, the outer member and Necessary torque can be applied to the rotating blades. Further, by providing a plurality of regulating members, the relationship between the rotational position of the rotary blade and the magnitude and direction of the generated torque can be finely adjusted according to the purpose. As a result, for example, an appropriate torque characteristic as an automatic closing door can be obtained.
[0034]
Such hinges have an automatic opening and closing torque adjustment function compared to normal hinges that have only a door support and guidance function, so a large hydraulic opening and closing device provided separately from the hinges. Can be omitted. In this case, in the hinge of the present invention, the support shaft is an eccentric member such as an eccentric shaft, a restriction member is provided on the support member, and an intermediate portion of the eccentric member, compared to a normal hinge. Since the only difference is that the rotating member is provided between the control member and the regulating member, the structure is slightly complicated and the size is slightly increased. Therefore, when viewed as an entire apparatus capable of automatically closing the door, it is possible to achieve a reduction in size and weight, simplification of the structure, and cost reduction as compared with the conventional apparatus.
[Brief description of the drawings]
FIG. 1 shows an example of the overall structure of a hinge to which the present invention is applied, wherein (a) is a longitudinal sectional view and (b) is a bottom view.
FIG. 2 shows the hinge blade of the hinge, wherein (a) is a cross-sectional view and (b) is a front view before bending.
3A and 3B show a fixed blade of the hinge, wherein FIG. 3A is a top view and FIG. 3B is a front view before bending.
FIGS. 4A and 4B are a front view and a top view of the hinge cylinder, respectively.
FIG. 5 is an explanatory view showing an example of attaching the hinge.
FIG. 6 is an explanatory view showing a mounting state of the hinge screw.
FIG. 7 is an explanatory view of a torque generating action by rotation of the hinge screw.
FIG. 8 is a curve diagram of torque characteristics when the hinge screw is rotated.
[Explanation of symbols]
1 Rotating blade 2 Fixed blade 3 Eccentric shaft (eccentric member)
4, 5 Screw (Regulator)
6 Needle bearing (rotating member)
11 Cylinder (outer member)
21 Intermediate ring (engagement member)
31 Curved parts (both ends)
32 Eccentric part (intermediate part)
33 Shaft end (torque transmission)
100 Door (Rotating body)
200 frame (main part)

Claims (1)

In the hinge that combines the rotating blade fixed to the rotating body and the fixed blade fixed to the main body portion so that they can rotate relative to each other,
An outer member integrated with either the rotating blade or the fixed blade, an engaging member integrated with either the rotating blade or the fixed blade, the engaging member, and the outer member A bearing provided between the two ends, an end portion supported by the engaging member, an intermediate portion eccentric from the both end portions, and a torque transmitting portion engaged so as to be able to transmit torque to the engaging member. An eccentric member, a regulating member supported by the outer member and regulating relative rotation between the outer member and the intermediate portion, and the regulating member is in contact with the intermediate portion via the rotating member. And a rotating member provided at the intermediate portion .

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