JPH10159427A - Torque automatic adjustable hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hinge capable of adjusting torque. SOLUTION: The axial end 33 of an eccentric shaft 3 is connected to a fixed wing 2 through an intermediate ring 21 to stop the rotation of the shaft, and rotation between both curved parts 31 on both ends of the shaft is borne on a cylinder mounting the parts 31 to a rotational wing 1 through bearing 7, etc. The central part of the shaft is made as an eccentric section 32 to make a needle bearing 6 hole by the eccentric section, and when the rotational wing 1 and cylinder are rotated, the front ends of screws 4 and 5 mounted to them are so constituted that they are made to interfere with an outside ring 6a of the needle bearing 6. By the constitution, the rotational wing 1 is mounted to a door and is rotated, and when the screws 4 and 5 are rotated through the cylinder 11, the front ends of them are brought into contact with the outside ring 6a, the eccentric shaft 3 receives lateral-torsional load, and torque occurs between the eccentric shaft 3 and screws 4 and 5. When positions and projection quantity in the circumferential direction of the screws 4 and 5 are selected, torque having appropriate characteristics occurs through the screws 4 and 5 in the case the door is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge in which rotating blades fixed to a rotating body and fixed blades fixed to a main body are combined so as to be rotatable relative to each other. Hinges used for doors.

[0002]

2. Description of the Related Art A conventional hinge is a component which merely connects a main body such as a door frame and a rotating body such as a door so as to be relatively rotatable. Further, a hinge is known which has a constant resistance torque, such as a hinge of a cover of a copying machine, and prevents the cover from falling by gravity due to gravity. However, a hinge capable of applying a torque that changes with a rotational position so as to be suitable for opening and closing a door or the like has not been known.

On the other hand, in the automatic closing type door, a hydraulic torque adjusting device is attached separately from the hinge. However, such devices are bulky and require extra cost and space for mounting.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the prior art and to provide a hinge capable of applying a torque suitable for opening and closing a rotating body such as a door.

[0005]

In order to solve the above problems, the present invention combines a rotating blade fixed to a rotating body and a fixed blade fixed to a main body so as to be relatively rotatable between each other. In the hinge, an outer member integrated with either the rotating blade or the fixed blade, and both end portions forming a supporting relationship rotatable with the outer member, and an intermediate portion eccentric from the both end portions. An eccentric member including a portion and a torque transmitting portion for transmitting torque, and an engaging member integrated with either the fixed blade or the rotating blade and engaged with the torque transmitting portion so as to transmit torque. A joining member, a regulating member supported by the outer member and regulating relative rotation between the outer portion and the intermediate portion, and a rotating member forming the regulating member and the intermediate portion in a rolling contact relationship, Have The features.

[0006]

FIG. 1 shows an example of the structure of a hinge to which the present invention is applied, and FIGS. 2 to 4 show the components of the hinge.
The overall configuration of the hinge will be described with reference to FIG. 1 and other drawings. The hinge is configured by combining a rotating blade 1 fixed to a door 100 as a rotating body and a fixed blade 2 fixed to a frame 200 as a main body so as to be relatively rotatable between each other. It has 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 regulating members, a needle bearing 6 as a rotating member, and the like. Although FIG. 1 shows only one hypothetical position of the screws 4 and 5, these are actually provided at positions as shown in FIG. 6, for example.

As shown in FIG. 2, the rotary blade 1 includes a blade portion 1a and a mounting portion 1b for mounting the cylinder 11.
Each has an appropriate number of screw holes 1c for mounting. FIG. 2B shows a developed state before the semi-circular bending of the mounting portion 1b. In the present embodiment, the rotary blade 1 and the cylinder 11 are formed as separate bodies, and these are combined with each other by screws or the like, but may be formed as a single member.

As shown in FIG. 3, the fixed blade 2 includes a blade portion 2a and a mounting portion 2b for mounting the intermediate ring 21, and a suitable number of screw holes 2c are formed in each of them. In FIG. 3B, the blade portion 2a and the mounting portion 2
b shows a developed state before being bent at bending lines A and B, respectively. The bending angles at lines A and B are 45 ° and 90 °, respectively. In this example,
The fixed blades 2 and the intermediate ring 21 are separate bodies, and these are combined by screws or the like.
It may be formed of a member.

As shown in FIG. 4, the cylinder 11 has screw holes 11a and screws 4, 5 for being attached to the rotary blade 1.
And a screw hole 11b for screwing and supporting them.
Bearings 7 are attached to both ends of the cylinder 11. Thereby, the cylinder 11 forms a support relationship in which the cylinder 11 can be relatively rotated between both end portions (a curved portion 31 described later) of the eccentric shaft 3 via the bearing 7 and the intermediate ring 21. Although the outer member is formed as the cylinder 11 in this example, the outer member can support the screws 4 and 5 and form a support relationship that allows relative rotation between both ends of the eccentric shaft 3 via the bearing 7 and the like. The member may not necessarily be cylindrical as long as it can be formed.

The eccentric shaft 3 has a curved portion 31 as an end portion forming a rotatable support relationship with the cylinder 11 via the bearing 7 and the intermediate ring 3 as described above, and an eccentric portion as an intermediate portion eccentric from this portion. A portion 32, a shaft end portion 33 as a torque transmitting portion for transmitting torque, an intermediate shaft portion 34 connecting these components, and the like are provided. As a result, the eccentric shaft 3
Are rotatable relative to the cylinder 11 about a center O which is the center of the curved portion 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] eccentric portion 32 has a center O ₀ at a position eccentric from the center O by a distance e, needle bearing 6 of the outside, as a rotating member that contacting relationship rolling the eccentric portion and the screw 4, 5 Is installed. Therefore, the outer ring 6a of the needle bearing 6 can relatively rotate with the eccentric portion 32 by rolling.

The shaft end portion 33 has flat side surfaces and an end surface, and the eccentric shaft 3 is positioned in the axial direction when the end surface comes into contact with the front end surface of the cover ring 8. The cover ring 8 is fixed to the mounting portion 2b of the fixed blade 2 with screws together with the intermediate ring 21. In addition, the shaft end 33 for transmitting the 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, a hollow shaft or a shaft whose bending rigidity (corresponding to the second moment of area) changes depending on the bending direction may be used.

The intermediate ring 21 is attached to the fixed blade 2 and engages with the shaft end 33 so as to transmit torque. That is, the hole portion comes into 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 via this contact relationship. However, in this example, the rotation of the eccentric shaft 3 is restricted via the intermediate ring 21 by fixing the fixed blade 2 as described above. That is, the torque transmitting section only has an effect of preventing the rotation of the eccentric shaft 3. The tip projecting 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.

FIG. 5 shows an example of mounting a hinge, and FIG. 6 shows the mounting state of the screws 4 and 5 at this time. In FIG. 5, a hinged rotary blade 1 and a fixed blade 2 are a door 100 and a frame 2 that separate a room 400 having a wall 300 on one side from an outdoor 500.
00 respectively. The door 100 is in the fully closed position in the solid line, and about 110 ° from the two-dot chain line.
It is in the fully opened position. At this time, as shown in FIG. 1, the blade portion 2 a of the fixed blade 2 is located on the upper center line CL _1.
Fixed in the direction of the position, the rotary blade 1 is rotated between the position of the center line CL ₁ (fully closed) and the position of the line CL ₂ open it from 110 ° (fully open).

As shown in FIG. 6, in such an attached state of the hinge, the eccentric shaft 3 moves the eccentric portion 32 and the outer ring 6a to the center line CL when the outer ring 6a does not contact the screws 4 and 5. It is positioned by the fixed blade 2 so as to be centered on a center O ₀ that is separated from the center O by an amount of eccentricity e on the center ₁ . The position of the outer ring 6a at this time is represented by a solid circle C
Indicated by. This position is the same as the state in FIG. The screw 4 is provided at a position indicated by a center line CL ₃ which is rotated about 20 ° counterclockwise from the line CL ₂ when the rotary blade 1 is at the position of the line CL _{2 in} the fully opened state. Screw 5 is provided at a position of the center line CL ₁ rotated therefrom approximately 90 ° in the same direction (a position displaced from the screw 4 90 ° phase).

The screws 4 and 5 are supported by being screwed into the screw holes 11b of the cylinder 11 as described above, and regulate the 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 advance and retreat of the screws, and are set at positions protruding as illustrated. In the state shown in the figure, each of the right and left diagonal lines protrudes into the outer ring 6a. These rotate counterclockwise on circles C ₁ (the outer circle shown by the dashed line) and C ₂ (the inner circle shown by the two-dot chain line), respectively, along with the rotation of the rotary blade 1 and the cylinder 11. , The amount of projection changes as shown by a right diagonal line (dashed-dotted line) and a left diagonal line (two-dot chained line). The tips 4a and 5a are respectively formed by circles C ₁ and C ₂
If the angle 150 ° and 180 ° from the center line CL ₁ on both sides
Are set to protrude so as to intersect at points P, P and Q at the position of. In the following, screws 4 and 5 are each set to 150
° screw and 180 ° screw.

The hinge as described above has the following operational 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 each of 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.

At this time, assuming that the force F ₁ is supported by the spherical portions 31 at both ends of the eccentric shaft 3 and that only the bending load acts on the eccentric shaft, the eccentric shaft applies the bending load as a simple support beam having a span L. receiving will be deflected only [delta] ₁ and. In this case, pressure contact 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 ). In the figure, the magnitude of F ₁ is indicated by the same length as δ ₁ . The F ₁ and magnitude equal direction opposing force F ₁ 'acting on the tip 4a-1. However, since these forces F ₁ and F ₁ ′ are forces in the center O direction as described above,
As a result, no torque is generated to rotate the eccentric shaft 3 and the screw 4 and thus the cylinder 11.

At the position 4a-2 rotated by an angle θ from 4a-1, when the outer ring 6a is pushed by the screw 4, its center O ₀ is reached.
Center O There is a 4a-2 to O ₀ direction under the force approximate
Move to position ₂ . The amount of center movement at this time is δ ₂
It is. Assuming that δ ₂ is caused 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 distance d ₂ from the center O, the eccentric shaft 3 and the screw 4 and thus the cylinder 1
Torque for rotating 1 around the center O T ₂ = F ₂ d ₂ = Kδ ₂ d ₂ T ₂ ′ = F ₂ ′ d ₂ =
−Kδ ₂ d ₂ occurs. However, since the rotation of the eccentric shaft 3 is restricted by the fixed blade 2 via the intermediate ring 21, the rotating blade 1 receives torque and moves via the screw 4 and the cylinder 11. This torque is a clockwise torque, that is, a torque for rotating the rotary blade 1 in the opening direction.

Tip 4a-2 indicated by θ at about 45 °
In the position of the tip 4a-3 where θ is 90 ° with respect to the position of, d ₃ is d ₃ as shown in the drawing at T ₃ = Kδ ₃ d ₃ .
_Although slightly larger than ₂ , T ₃ is smaller than T ₂ because δ ₃ is about half of δ ₂ . θ is 150 °
In the position, the amount of projection of the tip 4a-4 of the screw 4 with respect to the outer ring 6a becomes 0, T ₄ becomes zero.

In the above description, when the outer ring 6a is pushed by the tip of the screw 4, the eccentric shaft 3 receives only the bending load, and the eccentric portion 32 is extended from the tip of the screw 4 in the direction O of the eccentric portion by the amount of protrusion of the screw 4. However, when the above-described torque is generated on the eccentric shaft 3, the eccentric portion 32 bends due to bending and torsion, and δ becomes bending torsion. As a result, the position at which the center O ₀ of the eccentric portion 32 moves shifts from the positions O ₂ and O ₃ shown in the left rotation direction. If the combined action of bending and torsion is taken into consideration, such a generated torque can be calculated with high accuracy, but the calculation is extremely complicated and will not be described.

FIG. 8 shows the results of experimentally measuring the torque generated by the above-described torque generating action. 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 indicates the torque generated on the rotary blade 1 at each screw angle, and the plus / minus sides indicate the closing torque / opening torque, respectively. Also, the measured values of the 150 ° screw and the 180 ° screw, in which the protrusion amount of the screw corresponds to the protrusion amounts of the screws 4 and 5, are indicated by open circles and black circles, respectively, and the measured values of the 120 ° screw and the 90 ° screw are indicated by triangles and squares. The respective torque curves are indicated by T-150 or the like.

In this experiment, when θ is around 45 °, the torque T
Is the largest. As described in FIG. 7, T∝δd
Therefore, the torque as a result of the experiment has the same tendency as the approximate torque that is diagrammatically obtained by considering only the bending.
In the hinge of this example, the 150 ° screw 4 is at the 90 ° position when the door is fully opened, the 180 ° screw 5 is at the 0 ° position 90 ° out of phase from this, and when the door is fully closed, the screw 4 is minus 20. The screw 5 is located at minus 110 ° in the position of °. Accordingly, the portion from fully open to fully closed with the torque curve T-150 of the screw 4 as a reference is indicated by a thick line, and the torque curve T-180 of the screw 5 is shifted by 90 ° to be overlapped with the screw 4 portion. Dotted torque curve T-180 / 90
, The combined torque curve by the screw 4 and the screw 5 is as shown by the solid line Tc.

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 maintained in the closed state without locking. When θ is about 10 ° to 70 ° (the door opening angle is 30 ° to 90 °), a not so large closing torque Tm is generated, and the door can be automatically closed at an appropriate speed. When θ is 90 ° (110 ° at the door opening angle), an appropriate opening torque T ₀ remains, the door can be maintained in the open state without full lock, and the door is closed by applying a slight force. Can be closed up.
Further, since the closing torque in the vicinity of the fully opened state is small, it is possible to prevent a problem when a simple spring is used, such as when the door is opened and the person exits, the door is suddenly closed and the ass of the person is hit.

In the above, an example has been shown in which the hinge of the present invention is used for a door having a full open angle of about 110 °. In this example, and two screws 4, 5 are used as the regulating member,
When the use is fixed like the above-mentioned door, it is not always necessary to use a regulating member whose protrusion amount can be adjusted like a screw. For example, the projection may be integral with the cylinder 11 or fixed thereto.

The number of regulating members is not limited to two, but may be one or three or more depending on the use of the hinge. For example, like the lid of a copy machine, 60
For applications in which it is sufficient to hold the open position at about °, one regulating member is used and the torque curve T shown in FIG.
A range R portion of -180 can be used. In that case, there is a closing torque in the closed position, and the closed state of the lid can be maintained,
At the time of full opening, a maximum opening torque against the natural falling force of the lid is generated, and the open state of the lid can be reliably maintained.

Further, for a hinge for a special use, the cross section of the intermediate shaft portion 34 of the eccentric shaft 3 is made elliptical or another special shape, and the second moment of area is changed depending on the rotational position, and the composite bending is performed. It is also possible to create a special torque curve with changes in Further, one or both of the screws 4 and 5 may be tilted so that the screw is tilted at a specific rotation angle, and the torque suddenly changes with respect to the rotation angle.

In the present embodiment, the needle bearing 6 is provided on the eccentric portion 32 as a rotating member that makes the screws 4, 5 and the eccentric portion 32 of the eccentric shaft 3 have a rolling contact relationship. The screws 4, 5 or the tip of the protruding member instead of the protruding member or the protruding member itself may be formed by a rotating member such as a roller. Although the eccentric member is also formed as an eccentric shaft in this example, it may be formed in a crank shape. Further, depending on the application, a configuration in which the eccentric portion 32 is closer to one side of the shaft than the center of the support portion at both ends is also possible.

In the above description, the eccentric shaft 3 is fixed by the fixed blade 2 and the cylinder 11 is rotated by the rotary blade 1. On the contrary, the rotary blade 1 and the cylinder 11 shown in FIG. Needless to say, the blade 1 and the eccentric shaft 3 may be rotated. In this case, the rotating blade 1 is attached to the frame 200, and the fixed blade 2 is attached to the door 100. Then, the rotary blade 1 is fixed to the position of the line CL ₁ in FIG. 6, it is set to a position of the 4 'showing a screw 4 by a two-dot chain line. Thus, opening and closing between the door fully open position CL ₂ and the fully closed position CL _1, to rotate the eccentric shaft 3 via an intermediate ring 31, when the eccentric rotating the eccentric portion 32 and the outer race 6a,
Just as when the cylinder 11 is rotated, a torque curve Tc shown in FIG. 8 can be obtained.

[0031]

As described above, according to the present invention, for example, the fixed blade and the engaging member are integrated, and this engaging member is engaged with the torque transmitting portion of the eccentric member so as to be able to transmit the torque. By fixing the eccentric member to a door frame or the like, a fixing torque can be transmitted to the eccentric member and the rotation of the eccentric member can be restricted. In addition, even if the rotation of the eccentric member is constrained, the rotation of the eccentric member is restricted by integrating the rotating blade attached to the door or the like and the outer member into a rotatable support relationship between the outer member and both ends of the eccentric member. And the outer member can be rotated.

On the other hand, the eccentric member has an intermediate portion eccentric from both end portions thereof, and the regulating member supported by the outer member regulates the relative rotation between the intermediate portion and the outer portion. When the intermediate member is rotated, the intermediate portion comes into contact with the regulating member, and the intermediate portion bends with respect to the support members on both sides, thereby avoiding the rotation of the regulating member. In this case, since the rotating member that makes the regulating member and the intermediate portion have a rolling contact relationship is provided, only the contact surface pressure is transmitted without friction between the regulating member and the intermediate portion.

Although the pressing force due to the contact surface pressure acts in the direction of the center of the intermediate portion, the center of the center portion is eccentric from the centers of the both end supporting portions of the eccentric member. Generates a torque for relatively rotating the eccentric member and the regulating member (therefore, the outer member) by the pressing force. In this case, the magnitude and direction of the pressing force differ depending on the rotational 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 the regulating member are interposed. The required 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, appropriate torque characteristics as an automatic closing door can be obtained.

Such a hinge is provided with an automatic opening / closing torque adjusting function as compared with a normal hinge having only a door supporting / guiding function. Therefore, a large hydraulic type is provided separately from the hinge. The switching device can be omitted. in this case,
The hinge of the present invention is, as compared with a normal hinge, that the supporting shaft is an eccentric member such as an eccentric shaft, the supporting member is provided with a regulating member, and the intermediate portion of the eccentric member and the regulating member. The only difference is that a rotating member is provided between the first and second members, and the structure is slightly complicated and the size is slightly increased. Therefore, when viewed as a whole device that can automatically close the door, it is possible to significantly reduce the size and weight, simplify the structure, and reduce the cost as compared with the related art.

[Brief description of the drawings]

FIG. 1 shows an example of the entire structure of a hinge to which the present invention is applied, wherein (a) is a longitudinal sectional view and (b) is a bottom view.

FIGS. 2A and 2B are sectional views of the hinged rotary blade, and FIG. 2B is a front view before bending.

3A and 3B show the 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 mounting the hinge.

FIG. 6 is an explanatory diagram 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]

 REFERENCE SIGNS LIST 1 rotating blade 2 fixed blade 3 eccentric shaft (eccentric member) 4, 5 screw (regulating member) 6 needle bearing (rotating member) 11 cylinder (outer member) 21 intermediate ring (engaging member) 31 curved surface portion (both ends) 32 Eccentric part (intermediate part) 33 Shaft end part (torque transmitting part) 100 Door (rotary body) 200 Frame (body part)

Claims (1)

[Claims] 1. 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 as to be relatively rotatable between each other, and the hinge includes one of the rotating blade and the fixed blade. An outer member integrated with the outer member; and both end portions forming a rotatable support relationship between the outer member and an intermediate portion eccentric from the both end portions, and a torque transmitting portion for transmitting torque. An eccentric member, an engaging member integrated with one of the fixed blade and the rotating blade and engaged so as to be able to transmit torque to the torque transmitting portion, and the outer portion supported by the outer member. A hinge comprising: a regulating member that regulates relative rotation between the intermediate portion and a rotating member that forms a rolling contact between the regulating member and the intermediate portion.