JP2012197584A - Hinge with closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge with a closing mechanism for a door, which can arbitrarily set an open angle position to start a closing operation and has an excellent closing condition.SOLUTION: The hinge with the closing mechanism comprises two blades having two horizontal surfaces provided with a shaft center insertion hole and a vertical surface connecting them, a slide member provided with an abutting part in the state of energizing a plurality of compression springs in parallel is arranged on the vertical surface of one blade, and a center cam formed continuously by a curved surface and a circumferential surface is arranged on the other blade. Then, both blades are assembled through a shaft center in the state that the abutting part of the slide member is pressed to the curved surface of the center cam by the compression springs. Also, a spring force adjusting member is provided to adjust energizing force of the compression springs and closing force of the door. Also, the plurality of center cams having the curved surfaces in different shapes are arranged on the hinge to set the closing force in the state of dividing an angle range in the opening/closing operation of the door, and the closing condition is improved further.

Description

  The present invention relates to a hinge having a closing mechanism for a door.

  There are two types of conventional door hinges that do not have a complicated mechanism such as hydraulic pressure, and incorporate an extremely simple mechanism in the hinge to enable automatic closing. As the first type, as disclosed in JP-A-9-151663, a torsion spring is arranged along the hinge tube part, and the torsion spring is engulfed by the opening operation of the door, and the biasing force is applied to the door. There is a configuration to close. As a second type, as disclosed in JP 2000-17940, a cam having a continuous inclined surface is arranged around the shaft, and the door is lifted by the inclination of each cam surface by opening the door. There is a gravity hinge configured to obtain motion and then close by the dead weight of the door.

  However, in the configuration in which the closing force is obtained by winding the torsion spring in the prior art, the door is only closed by the urging force of the torsion spring, and the closing operation can be performed even from the stage of opening and closing only slightly. For this purpose, it is necessary to have a certain level of closing force even in the final stage of closing. As a characteristic of the torsion spring, the force becomes stronger in proportion to the torsion angle. Therefore, when the spring is fully opened, the force is very strong and the acceleration is applied. It becomes the closing condition that hits the door. Further, the opening / closing angle of the door during general traffic is 70 degrees to less than about 80 degrees, but it is a necessary condition that a normal indoor door can be opened by 180 degrees. If it is adapted to the degree of opening, it will be a problem that the power at the closing stage will become too large.

  Also, indoor doors are usually opened and held at an opening angle of about 80 to 90 degrees, and an operation to stop at a position near this is also required. can also be stopped at any angular position for closing mechanism is not if. However, in the configuration using the above-mentioned torsion spring, a force is always applied to close, and since it has a considerably large closing force when placed near the 90 degree position, in order to stop at this position In addition, a separate complicated mechanism must be used.

  And in the gravity hinge having a continuous inclined surface around the shaft, it is possible to set the closing force to only a necessary angle because it is configured to be closed at the continuous inclined surface around the shaft using the weight of the door. . However, the biggest feature of this mechanism is the structure that converts the dead weight of the door into a closing force, so it is indispensable to lift the door itself when it is opened. As a result, the upper end of the door approaches the upper frame along with the opening action. It will be. Therefore, although it is widespread in toilet doors where the gap between the upper frame and the door upper surface is relatively large, it cannot be used in indoor doors where the gap is small as a storage, and it is hardly spread.

  Here, as a separate configuration, there is a hinge for a folding door configured to fold two doors into a V shape, and an odd-shaped center as disclosed in Japanese Patent Application Laid-Open Nos. 2003-269031 and 2009-121169. The slide member having the inclined surface portion is pressed from the lateral direction with respect to the cam by the urging force of the compression spring. This configuration allows the upper rail to move when the door carriage moves and folds the folding door, so that it can be fully folded, can be temporarily held in the middle, or more securely closed when it is completely closed For this reason, it is set so that a force that moves the folding doors as it approaches each position. However, the angle range for moving the folding door in this configuration is a relatively small range, and its force is also weak, so that it is in a large angle range such as the configuration with the above-mentioned first torsion spring or the second gravity hinge. Therefore, it is assumed that it is difficult to always obtain a certain level of closing force.

JP-A-9-151663 JP 2000-17940 JP 2003-269031 A JP2009-121169A

  The present invention has been made to solve the above-described problems, and has an object to propose a hinge with a closing mechanism that can obtain a closing force only from a necessary angle and does not require a vertical movement of a door. . Further, it is another object of the present invention to have a mechanism capable of adjusting the entire closing force after construction and adjusting the closing force for each opening angle range.

  In the present invention, the following technical means are provided to solve the above problems. First, two U-shaped blades having two horizontal surfaces provided with shaft insertion holes and a vertical surface connecting the two horizontal surfaces are provided. At this time, the vertical plane is set long in the vertical direction. Then, on the vertical surface of one blade, a slide member having a contact portion at the tip is arranged so as to be linearly movable only in the lateral direction, and a plurality of compression springs are arranged in parallel to be urged by the slide member. deep. A spring force adjusting member may be provided so that the urging force of the compression spring can be adjusted.

  Next, it has a vertically long shape with substantially the same cross-section, and is provided with a center cam formed with an axial center insertion hole at the center in the vertical direction, and the longitudinal outer peripheral surface continuously formed by a curved surface and a circumferential surface. . The curved surface of the center cam is set in such a shape that the distance from the center position of the shaft center gradually changes, and the circumferential surface is set on the circumference with respect to the center position of the shaft center. A center cam is arranged on the vertical surface of the other blade.

  Then, in a state where the axial insertion holes on the horizontal plane of the two blades are aligned, the axial center is inserted through the axial insertion hole of the center cam and assembled. Then, the abutting portion of the slide member is in contact with the longitudinal outer peripheral surface of the center cam, and the abutting portion moves in contact with the curved surface and the circumferential surface of the center cam by the rotation of the blade. The contact portion of the slide member is pressed against the curved surface of the center cam by the compression spring.

  The shape of the curved surface of the center cam at this time is formed by a curved surface in which the distance from the center position of the shaft center to the curved surface gradually changes, and the closing direction, that is, the vertical surfaces of both blades are It is set so that the distance between the axis and the curved surface decreases as the position becomes parallel. Then, when the door is opened from the closed state where the vertical surfaces of both blades are parallel, the sliding member is pushed in while the compression spring is bent by the curved surface of the center cam, and the door is always in the stage where the opening operation is completed. An urging force in the direction of returning to the closed position is obtained.

  The contact portion of the slide member is set so as to move from the curved surface of the center cam to the circumferential surface when the door is opened to some extent. Then, when the contact portion of the slide member moves on the circumferential surface, no force in the closing direction is generated, and when the opening operation is stopped, an operation of stopping and holding the door at that position is obtained. The position where the door can be opened and held is arbitrary, but generally it should be set around an opening angle that is slightly smaller than the right angle position. In normal door opening and closing operations, it is closed as it is normally opened. In a state where the opening is intentionally close to 90 degrees, the position can be held.

  The shape of the curved surface of the center cam is a necessary condition that the urging force of the compression spring is obtained by pushing the slide member together with the opening operation, and may be a surface shape such as another linear inclined surface. Further, the outer peripheral surface of the slide member may have a shape in which a plurality of curved surfaces and circumferential surfaces are alternately arranged. Furthermore, the shape of the abutting portion of the slide member is also arbitrary, and an inclined surface shape or semi-circular shape that abuts on the curved surface and is slippery is suitable. The smaller the friction between the contact surfaces of the two, the more efficient the conversion of the force by which the compression spring pushes the slide member into the force that closes the door. Combinations of plated materials are excellent. Moreover, the structure which attaches a roller to the contact part of the slide member front-end | tip, and moves a curved surface, rotating a roller may be sufficient.

  Here, the urging force of the compression spring is strongest when it is greatly bent due to the characteristics of the spring, and its strength is approximately proportional to the amount of bending. Then, in order to reliably close the door even when it is only slightly opened, it must have some degree of closing force at that stage, and as a result, a very strong force is necessarily applied when it is opened largely. Will end up. Therefore, it is effective to set the shape of the curved surface of the center cam so that the closing force is small at the initial stage of closing and the closing force gradually increases as the closing is further performed. Further, a spring force adjusting member may be provided to adjust the strength of the compression spring, and the closing force may be appropriately set according to the size and weight of the door.

  However, in the above configuration, it is assumed that it is only insufficient to adjust the strength of the urging force uniformly in the entire closing angle range and is still insufficient. Therefore, a plurality of center cams having curved surfaces with different shapes and circumferential surfaces on one blade are arranged in the vertical direction and mounted at the same axis, and the other blades are attached to the respective center cams. A configuration in which the slide members are arranged together with the compression springs in a divided state and a spring force adjusting member is further provided on each slide member is considered to be more effective.

  As an example, a center cam having a curved surface of the above-mentioned shape and a center cam having a curved surface that bends the compression spring extremely only at the initial stage of opening, and moving to the circumferential surface at an early opening angle position. It is conceivable that the slide members are arranged above and below the blades and the slide members are urged by compression springs. As a result, it becomes possible to obtain the urging force at the final stage of closing, which tends to be inevitably weak, with the latter center cam, and the former center cam needs only an urging force that barely closes the door. Optimal closing conditions can be realized.

  In other words, it is advisable to arbitrarily set the boundary position where the curved surface and circumferential surface of the center cam are continuous, and arrange a plurality of center cams with different curved surface shapes and boundary positions in a vertical direction as appropriate. The closing force can be set arbitrarily with the whole angle range in the door opening and closing operation divided, and the closing force in each angle range can be adjusted separately by the spring force adjustment member, making the closing more ideal Conditions can be obtained. In addition, since the door is normally opened and closed by two hinges, it can be opened and closed by using different center cams with different curved surfaces as described above. The structure which arrange | positions the center cam which has a curved surface and circumferential surface of a shape may be sufficient.

  In addition, it is possible to adjust the urging force in each angle range at the time of closing by the above configuration, but in addition to the closing force by the hinge itself, an operation of releasing by hand or tilting by the wind is executed. However, the problem that the phenomenon that the closing speed becomes higher is more likely to occur remains as a problem. Therefore, in this respect, one blade is a straight cylinder type and oil is sealed inside, and when the tip of the compression pin is pushed, a large load is generated during high-speed immersion operation, and small during low-speed immersion operation. It is preferable to install a damper having a configuration that generates only a load, and to arrange the tip of the compression pin in contact with the other blade at the final stage of closing the door. As a result, even if the closing speed is slightly increased, it is possible to realize an operation of slowly closing to the final stage after deceleration by the damper.

  The shape of the curved surface of the center cam is a curved surface that gradually changes the distance from the center position of the shaft center to the curved surface, and the closing direction, that is, the vertical surfaces of both blades are parallel. If the distance between the axis and the curved surface is set smaller as it approaches the position, the sliding member is pushed in while the compression spring is bent by the curved surface of the center cam during the door opening operation. When the operation is completed, an urging force in the returning direction is always obtained, and the door can be reliably closed.

  By urging the slide member arranged in a state where a plurality of compression springs are juxtaposed to a longitudinal center cam, a strong urging force by the compression spring can be obtained inside the narrow hinge, It becomes possible to secure the closing force.

  In addition, since the spring force adjusting member is provided, the urging force of the compression spring can be adjusted according to the weight of the door, and the closing force can be adjusted even when the closing force is insufficient for some reason during long-term use. Because it is very effective.

  A stage in which the door is opened beyond the angle at which the abutting portion of the slide member contacts the circumferential surface by providing a center cam whose outer circumferential surface in the vertical direction is formed continuously from the curved surface and the circumferential surface. Can be stopped at that position, and can be held as it is in an open state.

  A plurality of center cams each having a curved surface and a circumferential surface having different shapes are arranged on one blade and mounted on the same shaft center in the vertical direction. If the slide members are arranged together with the compression springs in the divided state, and each spring member is provided with a spring force adjusting member, the entire opening / closing angle range of the door can be arbitrarily divided, and the closing force can be adjusted individually. It becomes possible to set detailed closing conditions.

  The force by which the compression spring pushes the slide member by reducing the friction of the contact surface between the slide member and the center cam made of a material made of a synthetic resin with good sliding properties and a metal plated hard metal. Can be converted into a force for closing the door, and the closing condition and durability can be improved. A configuration in which a roller is attached to the abutting portion at the tip of the slide member and the roller moves on the curved surface while rotating can further reduce friction and is more effective.

  One blade is a straight cylinder type and oil is sealed inside, and when the tip of the compression pin is pushed, a large load is generated during high-speed immersion operation, and a small load is generated during low-speed immersion operation. If a damper is installed and the tip of the compression pin is in contact with the other blade at the final stage of closing the door, even when the closing speed is slightly higher, the damper will slowly close to the final stage after deceleration. Can be realized.

  The overall configuration is relatively simple, and the number of parts is small and can be provided at low cost. Furthermore, since the quantity of the slide member and center cam can be increased or decreased in the vertical direction, the size can be further reduced with a certain closing force secured, so that the overall hinge width can be reduced. It can be provided in a form with excellent design.

It is a top view of the closed state which attached the hinge with a closure mechanism of this invention to the door. It is a front view of the door side blade | wing of the hinge with a closure mechanism of this invention. It is a top view of the door side blade | wing of the hinge with a closing mechanism of this invention. It is a front view of the frame side blade | wing of the hinge with a closing mechanism of this invention. It is a top view of the frame side blade | wing of the hinge with a closing mechanism of this invention. It is a perspective view of a slide member of a hinge with a closure mechanism of the present invention. It is a side view of the state which attached the slide member to the door side blade | wing of the hinge with a closure mechanism of this invention. It is a perspective view of the spring force adjustment member of the hinge with a closing mechanism of the present invention. It is a front view of the state which assembled | attached the door side blade | wing of the hinge with a closure mechanism of this invention. It is a perspective view of the center cam of the hinge with a closing mechanism of the present invention. It is a top view of the state which assembled | attached the center cam to the frame side blade | wing of the hinge with a closing mechanism of this invention. It is an upper surface sectional view of the closed state where the hinge with a closure mechanism of the present invention was attached to the door. It is a top view of one shape example of the curved surface and the circumferential surface of the center cam of the hinge with a closing mechanism of the present invention. It is an opening-and-closing locus | trajectory figure in the state using the center cam of the example of 1 shape of the hinge with a closure mechanism of this invention. It is a top view of another shape example of the curved surface and the circumferential surface of the center cam of the hinge with a closing mechanism of the present invention. It is an opening-and-closing locus | trajectory figure in the state using the center cam of another shape example of the hinge with a closure mechanism of this invention. It is a top view of the state which has arrange | positioned the roller to the contact part of the hinge with a closure mechanism of this invention. It is a top view of the structure which attached the damper to the hinge with a closure mechanism of this invention. It is a top view of the structure which provided the building adjustment mechanism of the hinge with a closure mechanism of this invention.

  Embodiments of a hinge with a closing mechanism according to the present invention will be described below with reference to the drawings. FIG. 1 is a top view of a closed state in which a hinge with a closing mechanism according to the present invention is attached to a door 27 and a frame body 28. The door-side blade 1, the frame-side blade 2, the slide member 3, the compression spring 4, and the spring force adjustment. The member 5, the center cam 6, and the shaft center 7 are constituted as main members. 2 is a front view of the door-side blade 1, and FIG. 3 is a top view of the door-side blade 1. The U-shape has two horizontal surfaces 9 each having an axial insertion hole 8 and a vertical surface 10 connecting the two horizontal surfaces. Thus, the vertical surface 10 is set long in the vertical direction, and the attachment holes 11 are provided in the vicinity of both end portions. Then, a plurality of guide members 12 are mounted on the vertical surface 10 and the end of the vertical surface 10 is bent at a right angle, and a plurality of female screw portions 13 are provided on the surface.

  FIG. 4 is a front view of the frame-side blade 2, and FIG. 5 is a top view of the frame-side blade 2. Similarly, the frame-side blade 2 has two horizontal planes 9 each having an axial insertion hole 8 and a vertical surface 10 connecting the horizontal planes. In the shape of a letter, the vertical surface 10 is set long in the vertical direction, and attachment holes 11 are provided in the vicinity of both end portions. And, the vertical horizontal plane 9 of the frame side blade 2 enters inside the vertical horizontal plane 9 of the door side blade 1 with a predetermined gap, and the axial insertion holes 8 of both blades are overlapped in a straight line. Form it.

  FIG. 6 is a perspective view of the slide member 3, which has a contact portion 14 at the tip, upper and lower guide grooves 15, and a plurality of spring insertion holes 16. FIG. 7 is a side view of a state in which the slide member 3 is attached to the door-side blade 1, and shows a state in which the guide groove 15 of the slide member 3 is fitted into the guide member 12 of the door-side blade 1 having a protrusion. . Therefore, the slide member 3 can linearly move only in the lateral direction on the vertical surface 10 of the door-side blade 1 along the guide member 12.

  FIG. 8 is a perspective view of the spring force adjusting member 5, which includes a spring holder 17 and a spring force adjusting screw 18. FIG. 9 is a front view showing a state in which the slide member 3, the compression spring 4, and the spring force adjusting member 5 are attached to the door-side blade 1, and the spring force adjusting screw 18 is screwed into the female screw portion 13 of the door-side blade 1. In this state, the spring holder 17 is arranged, the compression spring 4 is inserted into the spring insertion hole 16 of the slide member 3 and the spring holder 17 is covered. Therefore, the slide member 3 can be pushed together with the compression spring 4 by turning the spring force adjusting screw 18. Here, in FIG. 9, two slide members 3 are arranged on one door-side blade 1, and three compression springs 4 are provided on each slide member 3. The plurality of compression springs 4 are arranged in parallel in order to obtain a large force within the width direction of the narrow door blade 1. Further, the point that the slide member 3 is divided into two parts and arranged vertically is effective under the closing condition of the door 27, and will be described in detail later.

  FIG. 10 is a perspective view of the center cam 6. The center cam 6 has a vertically long shape having substantially the same cross section, and has an axial center insertion hole 8 at the center position in the vertical direction. The longitudinal outer peripheral surface is continuously formed by a curved surface 19 and a circumferential surface 20. . FIG. 11 is a top view of the state in which the center cam 6 is mounted on the frame-side blade 2. The curved surface 19 is arranged toward the vertical surface 10 side of the frame-side blade 2, and the circumferential surface 20 faces the outside. Is arranged. Further, the shape of both is set so that the center cam 6 is completely fixed to the frame side blade 2 without wobbling when the shaft center 7 is simultaneously inserted into the frame side blade 2 and the shaft insertion hole 8 of the center cam 6. It is good to keep.

  Then, in a state where the shaft center insertion holes 8 of the upper and lower horizontal surfaces 9 of the door side blade 1 and the frame side blade 2 are aligned, the shaft center 7 is passed through the shaft center insertion hole 8 of the center cam 6 and the both blades are assembled. Then, the abutting portion 14 of the slide member 3 is in contact with the longitudinal outer peripheral surface of the center cam 6, and the abutting portion 14 is in contact with the curved surface 19 and the circumferential surface 20 of the center cam 6 by the rotation of the blades. Will move. FIG. 12 is a cross-sectional view in the same closed state as FIG. 1 and shows the relationship among the center cam 6, the slide member 3, and the compression spring 4 in an easily understandable manner. In the closed state of the door 27, the contact portion 14 of the slide member 3 is in contact with the vicinity of the end of the curved surface 19 of the center cam 6, and the slide member 3 has a certain urging force by the force of the compression spring 4. It is preferable that the curved surface 19 is pressed. Then, due to the surface inclination of the curved surface 19 and the inclination of the contact portion 14 of the slide member 3, a force to further rotate the door side blade 1 in the frame side blade 2 direction is applied.

  FIG. 13 is a top view showing an example of the shape of the center cam 6, which has a long shaft insertion hole 8 at the top and bottom at the center, and the outer peripheral surface is constituted by a curved surface 19 and a circumferential surface 20. ing. A slight step 21 is provided at the boundary between the curved surface 19 and the circumferential surface 20. Here, the curved surface 19 has a shape in which the distance from the center position of the axial insertion hole 8 gradually changes. As the shape, the range from the position of the boundary transition from the circumferential surface 20 to the curved surface 19 to the vicinity of the position where the contact portion 14 of the slide member 3 shown in FIG. When the distance from the surface position of each curved surface 19 to the center of the axial center insertion hole 8 is A to E, it is set so that A> B> C> D> E. The circumferential surface 20 is set on the circumference with respect to the center position of the axis 7.

  FIG. 14 is a locus diagram showing the opening / closing operation of the door 27 in the state where the center cam 6 having the shape shown in FIG. 13 is used. 14 (a) is in the same closed state as FIG. 12, and as the door 27 is opened, the contact portion 14 of the slide member 3 is bent by the center cam 6 as shown in FIGS. 14 (b) to 14 (c). By moving along the surface 19 and changing the distance from the surface of the curved surface 19 to the center of the shaft center 7, the slide member 3 is gradually pushed and the compression spring 4 is bent. Then, when the vicinity of the boundary between the curved surface 19 and the circumferential surface 20 shown in FIG. 14D is passed, the contact portion 14 moves to the circumferential surface 20 as shown in FIG. The compression spring 4 is not compressed any more in step.

  Therefore, when the door 27 is opened from the closed state shown in FIG. 14 (a) where the vertical surfaces 10 of both blades are parallel, and then the opening operation is finished at an arbitrary position, the position is opened to the vicinity of FIG. 14 (d). In the angle range, the contact portion 14 of the slide member 3 pushes the curved surface 19 by the biasing force of the compression spring 4 that is greatly bent, and the door 27 is moved by the operation in which the door-side blade 1 returns to the closed position by the inclined surfaces. It will be closed naturally. Here, the opening angle of the door 27 that is opened when a person passes is generally about 70 degrees. Therefore, the angle at which the door 27 is naturally closed with the hand released after the opening operation is shown in FIG. 14 (d). If it is set to around 80 degrees as shown, the closing operation of the door 27 can be obtained as it is after normal passage.

  Further, normally, a mechanism for holding the door 27 open 90 degrees before is also required. In that respect, when the abutting portion 14 of the slide member 3 moves on the circumferential surface 20, no force in the closing direction is generated at the door 27, and the door 27 is completely opened 180 ° beyond FIG. 14 (e). In the opening angle range up to FIG. 14 (f), the operation of stopping the door 27 at the opening position is obtained. In this open range, the closing force does not increase. In addition, it is said that it is easier to understand when there is a click feeling when stopping and holding in the open state. As a means for this, a small step 21 is provided at the boundary between the curved surface 19 and the circumferential surface 20 as shown in FIG. It is good to keep. Then, when the door 27 is opened and the contact between the abutting portion 14 of the slide member 3 and the curved surface 19 is finished, a feeling of being slightly pulled in the opening direction by this step 21 is obtained, and the door is closed conversely. In the stage, a small load is once generated in front of the step 21, and a feeling of interlocking with the closing operation is obtained after a feeling of overcoming it.

  Here, the biasing force of the compression spring 4 is strongest when it is greatly bent due to the characteristics of the spring, and its strength is approximately proportional to the amount of bending. Therefore, in the condition where the door 27 is closed, the vicinity in FIG. 14D is the strongest, and the biasing force is inevitably weak at an opening angle smaller than that in FIG. However, since it is necessary to reliably close the door 27 even from a state where it is slightly opened, it is necessary to have a certain level of closing force even when the door 27 is opened slightly. Inevitably, a very strong force will be applied. In other words, the door 27 is only closed for the time being, and if it is possible to make a state where the door hits the door at the time of final closing, this configuration is sufficient, but if it is used for a general indoor door, It is assumed that more appropriate closing conditions are required.

  Therefore, it is preferable to set the shape of the curved surface 19 of the center cam 6 so that the closing force gradually increases as it is closed. In other words, a method is conceivable in which the distance difference between D and E is made larger than the distance difference between A and B after satisfying the condition of A> B> C> D> E in FIG. Then, the urging force in the final closing stage is somewhat increased. Then, the spring force adjusting screw 18 of the spring force adjusting member 5 is turned to adjust the strength of the compression spring 4, and the closing force may be appropriately set according to the size and weight of the door 27.

  However, in the above configuration, it is only necessary to uniformly adjust the strength of the urging force in the entire closing angle range. Also, from the viewpoint of design, it is considered that the center cam 6 is desired to be formed relatively small because it is not desired to extremely increase the thickness of the hinge itself. As a result, it is difficult to obtain a distance difference for each angle of the curved surface 19 that is so large, and it is assumed that this is still insufficient.

  Therefore, a plurality of center cams 6 each having a curved surface 19 and a circumferential surface 20 having different shapes are arranged on the door-side blade 1 in the vertical direction and mounted on the same axis 7. A configuration in which the same number of slide members 3 are arranged together with the compression springs 4 in a state where the individual center cams 6 are separated from each other, and a spring force adjusting member 5 is provided on each slide member 3 is considered to be more effective. As an example, there is provided a center cam 6 having a curved surface 19 that extremely deflects the compression spring 4 only at the initial opening stage shown in FIG. 15, and that moves to the circumferential surface 20 at an early opening angle position. The center cam 6 shown in FIG. 15 has a smaller angle range from the center of the shaft center insertion hole 8 occupied by the curved surface 19 than the center cam 6 shown in FIG. The distance is changed relatively large. That is, the distance difference between D and E in FIG. 15 is set larger than the distance difference between D and E in FIG. Further, the position of the circumferential surface 20 from the center of the axial insertion hole 8 is the same in both FIG. 13 and FIG.

  FIG. 16 is a trajectory diagram showing the opening and closing operation when the center cam 6 shown in FIG. 15 is used. When the door 27 is opened from the closed state of FIG. 16 (a) to the vicinity of FIG. 16 (c). When the compression spring 4 is bent and the vicinity of 45 degrees shown in FIG. 16D, the contact portion 14 of the slide member 3 has already shifted to the circumferential surface 20 and no closing force is generated. Therefore, the center cam 6 of FIG. 15 has a structure having a strong closing force around the opening initial range. Further, the boundary between the curved surface 19 and the circumferential surface 20 in the center cam 6 of FIG. 15 is not a position where the door 27 is opened and held, and therefore the step 21 is not necessary.

  Considering the closing condition of the entire area in the opening / closing operation of the door 27, the center cam 6 having the curved surface 19 shown in FIG. 13 and the center cam 6 having the curved surface 19 shown in FIG. As shown in FIG. 9, it is effective to arrange the two upper and lower slide members 3 and the spring force adjusting member 5 on the frame-side blade 2 and bias the compression spring 4 to each of them. Then, the closing force by the center cam 6 in FIG. 13 is only required to close the door 27 halfway, and the energizing force at the final stage of closing, which tends to be weakened by the above-described process, is the center cam 6 in FIG. And a wider range of closing conditions can be realized. Furthermore, by separately disposing the spring force adjusting member 5 on the center cam 6 of FIGS. 13 and 15, the urging force can be adjusted in each angle range, and further effects can be obtained.

  That is, the present invention is characterized in that the entire opening / closing angle range is divided and the setting is changed in each range to perform the closing operation. The curved cam 19 and the center cam 6 having various shapes with different boundary positions are provided. It is better to set them and arrange them arbitrarily in the vertical direction and arrange them on the door-side blade 1 as appropriate. Furthermore, the spring force adjustment member 5 can adjust the closing force in each angle range, making it more ideal closing Conditions can be obtained. In addition, since the door 27 is normally held by two upper and lower hinges so as to be opened and closed, not only a plurality of center cams 6 having different curved surfaces 19 are arranged in one hinge as described above, but also the upper and lower hinges. The center cam 6 having the curved surface 19 and the circumferential surface 20 having different shapes is arranged, for example, the center cam 6 of FIG. 13 is arranged on the upper hinge and the center cam 6 of FIG. 15 is arranged on the lower hinge. It may be a simple configuration.

  In addition, the inclined shape of the abutting portion 14 of the slide member 3 is arbitrary, and an inclined surface shape or semi-circular shape which is easy to slide on the curved surface 19 is suitable. The smaller the friction between the curved surface 19 and the contact surface 14 of the abutting portion 14 of the slide member 3, the more efficiently the compression spring 4 converts the force that pushes the slide member 3 into the force that the door 27 closes. A combination of a good synthetic resin molded product with a hard metal plated metal on the other side is excellent. Moreover, as shown in FIG. 17, the structure which mounts the roller 22 to the contact part 14 of the slide member 3 front-end | tip, and moves the curved surface 19 while the roller 22 rotates is also excellent.

  However, it is conceivable that, after the opening operation is finished, a situation in which the device is pushed out by hand and the closing operation is performed, or a wind is generated. In such a case, those forces are added to the closing force of the hinge itself, and it is assumed that the point that the closing speed is increased still remains a problem. Therefore, as shown in FIG. 18, the door-side blade 1 is a straight cylinder type and oil is sealed inside, and when the tip of the compression pin 24 is pushed, a large load is generated during a high-speed immersion operation, and a low-speed immersion is performed. A damper 23 having a configuration that generates only a small load during operation may be mounted and disposed so that the tip of the compression pin 24 abuts the inner surface of the frame-side blade 2 or the frame body 28 at the final stage of closing the door 27. Then, even if the closing speed is slightly increased, the operation of slowly closing to the final stage can be realized by the deceleration effect of the damper 23.

Further, in the indoor door, the hinge itself is usually provided with front / rear / right / left / up / down three-dimensional installation adjustment functions, and the hinge with the closing mechanism of the present invention is also required to have a construction adjustment mechanism. Most of the most common installation adjusting mechanisms perform left and right position adjustment by operating a hinge blade on a seesaw with respect to a fulcrum. However, it is assumed that the closing mechanism of the present invention affects the closing force when the angle of the blade in the closed state changes. Therefore, as shown in FIG. 19, the outer case 25 and the inner case 26 are provided so as to be dug in the frame 28, the frame-side blade 2 is attached to the inner case 26, and the inner case 26 is attached to the outer case 25. It is preferable that the frame side blades 2 move straight back and forth, and the frame side blades 2 move in the left-right direction while being parallel to the inner surface of the frame body 28 to adjust the installation.

DESCRIPTION OF SYMBOLS 1 Door side blade | wing 2 Frame side blade | wing 3 Slide member 4 Compression spring 5 Spring force adjustment member 6 Center cam 7 Axis center 8 Axis center insertion hole 9 Horizontal surface 10 Vertical surface 11 Mounting hole 12 Guide member 13 Female thread part 14 Contact part 15 Guide Groove 16 Spring insertion hole 17 Spring holder 18 Spring force adjusting screw 19 Curved surface 20 Circumferential surface 21 Step 22 Roller 23 Damper 24 Compression pin 25 Outer case 26 Inner case 27 Door 28 Frame

Claims (7)

A hinge for a door having a closing mechanism, two blades having a horizontal plane provided with an axial insertion hole and a vertical plane connecting the two, a slide member having a center cam and a contact portion, and a plurality of slide members The center cam has a curved surface whose shape gradually changes from the center position of the shaft center, and the center cam is arranged on one blade and the other blade on the other blade. Two slide members and a plurality of compression springs are arranged, and the shaft center is simultaneously inserted into the shaft insertion holes of both blades while the contact portion of the slide member is pressed against the curved surface of the center cam by the compression springs. When the door is opened from the closed state, the sliding member is pushed in while the compression spring is bent by the curved surface of the center cam, and the contact position between the contact portion and the center cam is on the curved surface. In a certain opening angle range, Closing mechanism with a hinge, characterized in that the closing operation of the door is obtained after the end of the operation. The center cam has a vertically long shape with substantially the same cross section, and has an axial center insertion hole at the center in the vertical direction. The longitudinal outer peripheral surface is formed continuously by a curved surface and a circumferential surface. The circumferential surface that follows is set on the circumference with respect to the center position of the shaft center, and the contact position of the sliding member and the center cam is on the circumferential surface within the entire opening angle range of the door. The hinge with a closing mechanism according to claim 1, wherein the door is stopped and held in the same position after the opening operation is finished. The slide member is disposed on the vertical surface of the blade in a state in which only a lateral linear movement is possible, and a plurality of compression springs are urged in parallel on the slide member, and a spring force adjusting member is provided to The hinge with a closing mechanism according to claim 1 or 2, wherein the abutting portion can adjust a force for pushing the curved surface and the circumferential surface of the center cam. A plurality of center cams each having a curved surface and a circumferential surface having different shapes are arranged in the vertical direction on one blade and mounted on the same axis, and the same number of slide members as the center cam are mounted on the other blade. The hinge with a closing mechanism according to any one of claims 1 to 3, further comprising a spring force adjusting member provided on each slide member. By arranging multiple center cams with curved surfaces and circumferential surfaces with different shapes in one hinge, it is possible to set the closing force individually with the whole opening angle in the door opening and closing operation divided The hinge with a closing mechanism according to any one of claims 1 to 4, wherein the closing force in each angle range can be adjusted separately by a spring force adjusting member. The roller which rolls to the contact part of the said slide member is mounted | worn, and the friction of the curved surface of the center cam and the contact part of a slide member at the time of the opening / closing operation | movement of a door is reduced. 5. A hinge with a closing mechanism according to any one of 5 above. One of the blades is a straight cylinder type, and oil is sealed inside, and when the tip of the compression pin is pushed, a large load is generated during a strong immersion operation and only a small load is generated during a weak immersion operation. A hinge with a closing mechanism according to any one of claims 1 to 6, characterized in that the damper is mounted so that the compression pin of the damper is immersed in the closing operation at the final stage of closing the door. .

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