KR20140108142A - Door hinge closer having free stop function - Google Patents

Abstract

assignment
A door hinge closure having a main coil spring and an auxiliary coil spring and having a free stop function.
Solution
In the door hinge closure 100 in which the first coil spring 130 is disposed in the first cylindrical body 110 and the second coil spring 134 is provided in the second cylindrical body 220, the rotary elastic force of each coil spring is set / The first and second clutch mechanisms are provided. When the relative rotational movement position of the first cylinder and the second cylinder is smaller than the first rotational movement position, the first clutch mechanism hooks the first spring engaging member (170) with the other end of the first coil spring on the shaft (150) And when it is larger than the first rotational movement position, it is hooked to the second cylinder. When the relative rotational movement position is smaller than the second rotational movement position, the second clutch mechanism hooks the second spring engagement member (190) having one end of the second coil spring on the second cylinder, and when it is larger than the second rotational movement position I hang it on the shaft.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door hinge close-

The present invention relates to a door hinge. More specifically, in a door hinge in which two cylinders are coaxial and are vertically stacked and relatively rotatably connected, one of the cylinders is mounted on the door, and the other cylinder is mounted on the door frame, The coil spring set in the cylinder according to the present invention accumulates the rotational elastic force for closing the door (accumulates the spring elastic force), and if the door is opened more than a certain distance, the rotational elastic force does not act on the door, To a door hinge closure having a function (free stop function) that can be held in a position.

Conventionally, in a door hinge in which two cylinders are vertically stacked on a coaxial shaft so as to be relatively rotatable, one of the cylinders is mounted on the door, and the other cylinder is mounted on the door frame, The main and auxiliary coil springs accumulate the rotational elasticity as the door is opened when the door is opened. When the door is opened to some extent, the auxiliary coil spring is set by the clutch mechanism Only the main coil spring carries the rotational elasticity force because the rotational elastic force of the coil spring is stopped and the rotational elastic force does not act on the door so that the main coil spring acts at the time of closing the door, The auxiliary coil spring is also operated so that when the door is closed, these two coil springs The door is closed so that a greater force is known by hinged closure (Patent Document 1).

In addition, in the door hinge in which one coil spring is set in the cylinder, when the door is opened, the coil spring charges the rotary elastic force, and when the door is opened to some extent, There is known a door hinge closure having a free stop function so that the elastic force of the coil spring does not act on the door so that the door can be stopped at an arbitrary position (Patent Document 2).

Japanese Utility Model Publication No. 62-163279 Japanese Patent Application Laid-Open No. 9-158605

However, it is also possible to provide a function of providing an auxiliary coil spring for increasing the door closing force at the time of closing the door, and also capable of stopping the door at an arbitrary position with the door being opened, There is no hinge closure until now, and the necessity was acknowledged, but suitable thing was not developed.

The present invention relates to a door hinge closure having a free stop function that allows a door to be held at an arbitrary position when a door is opened to a certain degree while having a large door closing force at the time of closing by using a main coil spring and an auxiliary coil spring And to provide the above-mentioned objects.

That is,

A first cylinder having a first free end at one end and a first connecting end at the other end and being mounted on one of the door and the door frame,

A second connecting body having a second free end at one end and a second connecting end at the other end and being mounted on the other of the door and the door frame, the second connecting end being adjacent to the first connecting end, A second cylinder aligned in the direction of the longitudinal axis of the first cylinder with respect to the first cylinder and rotatably connected to the first cylinder,

A first end fixed to the first free end of the first tubular body, a second end adjacent to the second connection end in the second tubular body, and a second end extending from the first end into the first tubular body, A shaft extending in a concentric manner with respect to the one cylinder and having a shaft body extending to the second end,

A first spring engaging member disposed between the outer peripheral surface of the second end of the shaft and the inner peripheral surface of the second cylinder and rotatably disposed about the longitudinal axis with respect to the shaft and the second cylinder,

A second spring engaging member disposed between the outer circumferential surface of the second end of the shaft and the inner circumferential surface of the second cylinder and rotatably about the longitudinal axis with respect to the shaft and the second cylinder, A second spring engaging member disposed on the second free end side of the second cylinder with respect to the engaging member,

A first coil spring formed concentrically around the shaft body in the first cylinder, the first coil spring having one end engaged with the shaft and the other end engaged with the first spring engagement member;

A second coil spring formed in the second cylinder, the second coil spring having one end engaged with the second spring engagement member and the other end engaged with the second cylinder,

Wherein a relative rotational movement position of the first cylinder and the second cylinder about the longitudinal axis is set to an initial rotational position corresponding to a state in which the door is closed, The first spring engaging member is hooked to the second cylinder and when the first spring engaging member is in the first rotational movement position, the door is opened at a position corresponding to a state in which the door is largely opened A first clutch mechanism for releasing engagement between the first spring engagement member and the second cylinder and engaging the first spring engagement member with the shaft,

When the relative rotational movement position is between the initial rotational position and the second rotational position corresponding to the opened state by the second angle different from the first angle, When the second spring engagement member is in the position corresponding to the state in which the door is largely opened than when the second rotation movement position, the second spring engagement member is released from engagement with the shaft, And a second clutch mechanism for engaging the spring engagement member with the second cylinder.

In the door hinge closure having the free stop function, when the door is opened by a predetermined angle or more, the elastic force of the one coil spring does not act between the first and second cylinders, so that the door can be opened with a relatively weak force, When the door is further opened, the elastic force of both coil springs does not act between the first and second cylinders, and the door can be stopped at an arbitrary position. When the door is closed, the elastic force of the first and second coil springs acts between the first and second cylinders, so that it is possible to reliably close the door by a strong force.

Preferably, the first rotational position and the second rotational position are set such that the first angle is larger than the second angle.

Specifically,

A first housing disposed between the first spring engagement member and the second cylinder and fixed to the second cylinder,

A second housing disposed between the second spring engaging member and the second cylinder and fixed to the second cylinder,

Wherein the first spring engagement member has a first clutch element holding opening penetrating between the shaft and the first housing and a first clutch element held in the first clutch element holding opening,

The second spring engaging member has a second clutch element holding opening penetrating between the shaft and the second housing and a second clutch element held in the second clutch element holding opening,

In the first housing, a first outer clutch element retaining groove is formed on an inner peripheral surface,

The second housing has a second outer clutch element retaining groove formed on an inner peripheral surface thereof,

The first inner clutch element retaining groove and the second inner clutch element retaining groove are formed on the outer peripheral surface of the second end portion of the shaft,

The first clutch mechanism is configured such that when the relative rotational movement position is between the initial rotational position and the first rotational position, the first clutch element is engaged with the first outer clutch element engagement groove, When the spring engagement member is engaged with the first housing and the relative rotational movement position exceeds the first rotational movement position, the first clutch element is not engaged with the first outer clutch element engagement groove, The first clutch engaging member is engaged with the first inner clutch engaging groove to engage the first spring engaging member with the shaft,

The second clutch mechanism is configured such that when the relative rotational movement position is between the initial rotational position and the second rotational position, the second clutch element is engaged with the second outer clutch element engagement groove, When the spring engagement member is engaged with the first housing and the relative rotational movement position exceeds the second rotational movement position, the second clutch element is not engaged with the second outer clutch element engagement groove, And the second spring engaging member is engaged with the second inner clutch engaging groove so that the second spring engaging member is engaged with the shaft.

Further, a cylindrical intermediate spring seat fixed to the inner peripheral surface of the second cylinder and a third coil spring disposed in the second cylinder are further provided,

The other end of the second coil spring is engaged with the intermediate spring seat,

The second spring engaging member passes through the inner hole of the second coil spring and extends beyond the intermediate spring seat,

Wherein the third coil spring is formed between the intermediate spring seat and the second free end of the second cylinder and has one end engaged at a position over the intermediate spring seat of the second spring engagement member, 2 cylinder.

With this configuration, it is possible to further increase the elastic force at the time of closing the door.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a door hinge closure having a free stop function according to the present invention will be described below with reference to the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front sectional view of a door hinge closure having a free stop function according to a first embodiment of the present invention, and is a schematic view showing the orientation of the door hinge closure so that the configuration of the first and second clutch mechanisms can be seen.
Fig. 2A is a cross-sectional view taken along the line II-II in Fig. 1, and shows the state of the first clutch mechanism at the initial rotational movement position.
Fig. 2B is a view similar to Fig. 2A, showing the state of the first clutch mechanism in the first rotational movement position.
Fig. 2C is the same view as Fig. 2A, and shows the state of the first clutch mechanism when it exceeds the first rotational movement position.
Fig. 3A is a sectional view taken along the line III-III in Fig. 1, and shows the state of the second clutch mechanism in the initial rotational position.
Fig. 3B is a view similar to Fig. 3A, showing the state of the second clutch mechanism at the second rotational position. Fig.
Fig. 3C is the same view as Fig. 3A, and shows the state of the second clutch mechanism when it exceeds the second rotational movement position.
4 is a front sectional view of a door hinge closure having a free stop function according to a second embodiment of the present invention, and is a schematic view showing the orientation of the door hinge closure so that the configuration of the first and second clutch mechanisms can be understood.

1, a door hinge closure 100 having a free stop function according to the first embodiment of the present invention includes a first cylinder 112 to which a first wing 112 mounted on a door (not shown) And a second cylinder 120 to which a second wing 122 mounted on a door frame (not shown) is fixed are aligned in the direction of a longitudinal axis 118 extending in the vertical direction, And the second connecting end portion 124 of the second cylinder 120 are arranged adjacently to each other via the sliding bearing member 105. The first connecting end portion 114 of the first cylinder 120 and the second connecting end portion 124 of the second cylinder 120 are disposed adjacent to each other via the sliding bearing member 105. [ The first coil spring 130 is disposed in the first cylinder 110 and the second coil spring 134 is disposed in the second cylinder 120 as described later in detail, The first and second coil springs 130 and 134 are caused to rotate with respect to each other as the relative rotation occurs between the first and second cylinders 110 and 120 when the first and second cylinders 110 and 120 are opened, The first clutch mechanism 140 (Fig. 2A) and the second clutch mechanism 145 (Fig. 3A) constituted inside the second cylinder 120 form first and second The coil springs 130 and 134 are sequentially stopped and the action of the rotary elastic force on the door is stopped. When the door is opened at a predetermined angle or more, by stopping the action of both of the rotational elastic force of the first and second coil springs 130 and 134 and the elastic force of the door, the door can be stopped at an arbitrary position Respectively.

A shaft 150 is formed in the first cylinder 110 located on the upper side and the shaft 150 has a first end portion 151 located at the upper end of the shaft 150, The second end portion 152 fixed to the free end portion 116 is disposed so as to extend through the first connecting end portion 114 of the first tubular body 110 into the second tubular body 120 have. A cylindrical first housing (160) is formed at the second connecting end (124) of the second cylinder (120). The first housing 160 has a small diameter portion 162 located at an upper portion and a large diameter portion 164 located at a lower portion and the large diameter portion 164 is connected to a second connection And is fixed to the second cylinder 120 by being press-fitted into the end portion 124. The outer circumferential surface 163 of the small diameter portion 162 extending in the first tubular body 110 is formed on the inner circumferential surface 106 of the sliding bearing member 105 made of resin and formed between the first tubular body 110 and the second tubular body 120 And the first cylinder 110 and the second cylinder 120 are relatively rotatably connected to each other. A cylindrical first spring retaining member 170 is provided between the outer peripheral surface 156 of the second end 152 of the shaft 150 and the inner peripheral surface 165 of the first housing 160, And is rotatable about the longitudinal axis 118 with respect to the housing 160. The first coil spring 130 is set coaxially around the shaft body 153 between the first end 151 and the second end 152 of the shaft 150 in the first cylinder 110 The upper end 131 of the first coil spring 130 is engaged with the spring engagement groove 154 of the first end 151 of the shaft 150 and the lower end 132 of the first coil spring 130 is engaged with the first spring engagement member 170, As shown in Fig. A cylindrical second housing 180 is press-fitted and fixed at a position below the first housing 160 of the inner circumferential surface 125 of the second connecting end portion 124 of the second cylinder 120. The second spring latching member 190 extending downward from the second end 152 of the shaft 150 is configured such that its upper cylindrical portion 191 is positioned on the outer peripheral surface 156 of the second end 152 of the shaft 150, And is rotatable about the longitudinal axis 118 with respect to the axis 150 and the second housing 180. The second housing 180 is rotatable about the longitudinal axis 118, The upper end 135 of the second coil spring 134 that is set in the second tubular body 120 is caught by the spring retaining groove 194 of the lower shaft portion 192 of the second spring retaining member 190, 136 are engaged with the spring engagement grooves 186 of the spring seat 185 fixed to the second free end 126 of the second cylinder 120. A support shaft 199 is fitted between the spring seat 185 and the second spring engagement member 190. The support shaft 199 supports the second spring engagement member 190 from below, The position of the second spring latching member 190 is not shifted downward.

2A to 2C, the cylindrical first spring latching member 170 is provided with an inner circumferential surface 172 facing the shaft 150 at an outer circumferential surface 171 facing the first housing 160 Two first clutch-element retaining openings 174 are formed at diametrically opposed positions, and the first clutch-element 142 on the rollers is held in each of the first clutch-element retaining openings 174. [ The diameter of the first clutch element 142 is larger than the wall thickness of the portion where the first clutch element retaining opening 174 of the first spring retaining member 170 is formed so that a portion of the first clutch element 142 Is projected from at least one of the outer circumferential surface 171 or the inner circumferential surface 172 of the first spring engaging member 170. A first outer clutch element retaining groove 168 to be engaged with the first clutch element 142 is formed on the inner circumferential surface 165 of the first housing 160. A first inner clutch element retaining groove 158 is formed in the outer peripheral surface 156 of the second end 152 of the shaft 150 to engage with the first clutch element 142. By the first spring engaging member 170, the first clutch element 142, the first housing 160, and the shaft 150 thus formed, the distance between the first cylinder 110 and the second cylinder 120 A first clutch mechanism 140 for connecting and disconnecting the rotational elastic force of the first coil spring 130 is formed.

2A, the first wing 112 of the first cylinder 110 and the second wing 122 of the second cylinder 120 are oriented in the same direction, and the first wing 112 of the first cylinder 110 faces the first wing 112, The relative rotational movement position of the cylinder 110 and the second cylinder 120 is the initial rotational position (0 DEG) corresponding to the state in which the mounted door is closed with respect to the door frame. At this time, the first clutch mechanism 140 is configured such that the first clutch element 142 is engaged with the first outer clutch element engaging groove 168 formed on the inner circumferential surface 165 of the first housing 160, The engaging member 170 is engaged with the first housing 160. When the first cylinder 110 is rotated from the initial rotational position to the second cylinder 120 in the counterclockwise direction as viewed in the drawing around the longitudinal axis 118, The first spring engaging member 170 is fixed to the second cylinder 120 through the first housing 160 and does not rotate. The first coil spring 130 is engaged with the spring engagement groove 154 of the shaft 150 that rotates together with the first cylinder 110 and the lower end 132 is engaged with the second cylinder 120 The first tubular body 110 is twisted between its both ends so that the first tubular body 110 is elastically supported in the clockwise direction while the rotational elastic force in this direction is maintained We will pay more. The first clutch mechanism 140 is configured to allow the elastic force of the first coil spring 130 in the first cylinder 110 to be transmitted to the first housing member 160 in a state in which the first clutch element 142 is engaged with the first housing 160, As a rotational elastic force in the closing direction. The first inner cylinder member 110 is rotated further to a position where the relative angle is 90 degrees (Fig. 2B) The groove 158 comes to the inside of the first clutch element 142. [ The first clutch engaging member 170 receives a counterclockwise force from the first coil spring 130 as viewed in the figure and the first clutch engaging member 170 receives from the first spring engaging member 170 The first outer clutch element retaining groove 168 and the first inner clutch element retaining groove 158 are pushed inward along the first outer clutch element retaining grooves 168 by the urging force. 2C), the first clutch element 142 is completely extruded from the first outer clutch element engaging groove 168 and the first inner clutch element engaging groove 158 It is in a state of being engaged. As a result, the first spring retaining member 170 is engaged with the shaft 150 and rotates together with the first cylinder 110, so that the first coil spring 130 is no longer twisted. Since the elastic force of the first coil spring 130 does not act on the second cylinder 120, a force for rotating the first cylinder 110 in the clockwise direction with respect to the second cylinder 120, that is, The rotational elastic force by the first coil spring 130 in the closing direction is not applied. That is, when the door is opened and the relative rotational movement position of the first cylinder 110 with respect to the second cylinder 120 exceeds 90 degrees (first rotational movement position), the first clutch mechanism 140 closes the first The clutch element 142 is engaged with the shaft 150 to release the engagement between the first coil spring 130 and the second cylinder 120 in the first cylinder 110, So that the elastic force of the door does not act as a rotational elastic force in the door closing direction. The first clutch mechanism 140 is configured such that the relative rotational position of the first cylinder 110 with respect to the second cylinder 120 is between the initial rotational position 0 and the first rotational position 90, The first coil spring 130 shrinks the rotational elastic force and its rotational elastic force acts in the closing direction of the door. When the rotational force exceeds the first rotational position 90 °, The first coil spring 130 stops the rotation of the door 130 so as not to rotate the elastic force of the spring 130 and to stop the rotation of the first cylinder 110 and the second cylinder 120, It does not act to close.

As shown in Figs. 3A to 3C, the cylindrical second latching member 190 is provided with an inner circumferential surface 197 facing the shaft 150 at an outer circumferential surface 196 facing the second housing 180 Two second clutch-element retaining openings 198 are formed at diametrically opposed positions, and the second clutch-element retainer 147 on the rollers is held in the respective second clutch-element retaining openings 198. [ The diameter of the second clutch element 147 is larger than the wall thickness of the portion where the second clutch element retaining opening 198 of the second spring retaining member 190 is formed so that a portion of the second clutch element 147 Is projected from at least one of the outer circumferential surface (196) or the inner circumferential surface (197) of the second spring engaging member (190). A second outer clutch element retaining groove 184 engaging with the second clutch element 147 is formed on the inner circumferential surface 182 of the second housing 180. A second inner clutch element engaging groove 159 engaging with the second clutch element 147 is formed on the outer peripheral surface 156 of the second end portion 152 of the shaft 150. The second spring element 190, the second clutch element 147, the second housing 180, and the shaft 150 are disposed between the first and second cylinders 110 and 120, And a second clutch mechanism 145 for connecting / disconnecting the rotational elastic force of the second coil spring 134 is formed.

The second clutch mechanism 145 is configured such that the second clutch element 147 is located on the outer peripheral surface 156 of the shaft 150 in the state of the relative rotational movement in the initial rotational position And the second spring retaining member 190 is engaged with the second inner clutch element retaining groove 159 so that the second spring retaining member 190 is caught by the shaft 150. When the first cylinder 110 is rotated in the counterclockwise direction around the longitudinal axis 118 with respect to the second cylinder 120 from the initial rotational movement position by opening the door, (190) rotates with the shaft (150). The second coil spring 134 is engaged with the spring engagement groove 194 of the second spring engaging member 190 whose upper end 135 rotates together with the shaft 150 and the lower end 136 is engaged with the second cylindrical body 120 So that the first cylindrical body 110 is elastically supported in the clockwise direction while being twisted between both ends thereof to further increase the rotational elastic force in this direction . Therefore, the second clutch mechanism 145 is configured such that, in a state in which the second clutch element 147 is engaged with the shaft 150, the elastic force of the second coil spring 134 in the second cylinder 120 closes the door As shown in Fig. The second outer clutch element retaining groove 184 formed on the inner circumferential surface 182 of the second housing 180 is rotated by a predetermined angle so that the second cylinder 120 is rotated further to a position where the relative angle is 30 ° And comes to the outside of the second clutch element 147. The second clutch engaging member 190 receives the clockwise force from the second coil spring 134 as viewed in the figure and the second clutch engaging member 190 receives the pressing force from the second spring engaging member 190 And is engaged with the second inner clutch element retaining recess 159 and the second outer clutch element retaining recess 184 by the first and second inner clutch element retaining grooves 159 and 159, respectively. 3C), the second clutch element 147 is completely extruded from the second inner clutch element engaging groove 159, and the second outer clutch element engaging groove 184 It is in a state of being engaged. As a result, the second spring retaining member 190 is engaged with the second housing 180 and is fixed to the second cylinder 120, so that the second coil spring 134 is no longer twisted. In addition, since the elastic force of the second coil spring 134 does not act on the first cylinder 110, a force for rotating the first cylinder 110 in the clockwise direction with respect to the second cylinder 120, The rotational elastic force by the second coil spring 134 does not act in the closing direction. The second clutch mechanism 145 is configured such that when the door has a relative rotational movement position of the first cylinder 110 relative to the second cylinder 120 of approximately 30 degrees (second rotational position) The second coil spring 134 is engaged with the second housing 180 to release the engagement of the second coil spring 134 with the first cylinder 110 in the second cylinder 120, So that the elastic force of the door does not act as a rotational elastic force in the door closing direction. The second clutch mechanism 145 is configured such that the relative rotational movement position of the first cylinder 110 with respect to the second cylinder 120 is changed from the initial rotational position 0 ° to the second rotational position 30 °, The rotational elastic force acts on the second coil spring 134 in the closing direction of the door while the rotational elastic force acts on the second coil spring 134 in the closing direction of the door. The second coil spring 134 stops the rotation of the coil spring 134 so that the rotation of the coil spring 134 is stopped and the rotational elastic force is not applied between the first and second cylinders 110 and 120, As shown in Fig.

As described above, the first clutch mechanism 140 rotates the first coil spring 130 acting between the first cylinder 110 and the second cylinder 120 to the first rotational position And the second clutch mechanism 145 operates to release the rotational elastic force of the second coil spring 134 acting between the first cylinder 110 and the second cylinder 120 by the second rotational movement And is operated to release it when the position is exceeded. In the above embodiment, the first angle at which the first rotational movement position is set is set at about 90 degrees, and the second angle at which the second rotational movement position is set at about 30 degrees. Therefore, when the relative rotational movement position of the first cylinder 110 and the second cylinder 120 is between the initial rotational position (0 °) and the second rotational position (30 °), the first coil spring 130 And the second coil spring 134 are acting between the first cylinder 110 and the second cylinder 120 and the second rotational position 30 ° and the first rotational position The second coil spring 134 does not operate and the rotational elastic force of only the first coil spring 130 acts. When the first coil spring 130 exceeds the first rotational position 90 °, The rotational elastic force of the coil spring 130 does not act and the rotational elastic force is not applied between the first and second cylinders 110 and 120 so that the door can be stopped at an arbitrary position. 1, the first and second clutch mechanisms 140 and 145 are shown aligned with the direction in which the first and second clutch elements 142 and 147 are visible so that their structures are well known. However, The first clutch element 142 and the second clutch element 147 are disposed at different circumferential positions, as can be seen from Figs. 2A and 3A.

Since the first coil spring 130 functions as a main coil spring which is twisted over a relatively large angular range, it is preferable that the first coil spring 130 is constituted by a coil spring having a large number of windings so as to increase the effective twist angle. On the other hand, the second coil spring 134 functions as an auxiliary coil spring for assisting the insufficient elastic force at the time of closing the door of the first coil spring 130, and it is necessary to obtain a large force within a relatively small angular range Therefore, it is preferable to constitute a coil spring having a small number of windings. The characteristics of the first and second coil springs 130 and 134 may be adjusted by other conditions such as the material of the spring material, the thickness and the shape of the coil.

The door hinge closure 200 having the free stop function according to the second embodiment of the present invention shown in Fig. 4 further has a third coil spring 237 set in the second cylinder 220. Fig. A cylindrical intermediate spring seat 287 is fixed and a lower end 236 of the second coil spring 234 is fixed to an intermediate spring seat 287 at an intermediate position of the second cylinder 220 extending downward. And is fixed to the second cylinder 220 by being engaged with the spring engagement grooves 288 of the second cylinder 220. The lower shaft portion 292 of the second spring engaging member 290 extends from the upper spring retaining groove 294 through the interior of the second coil spring 234 and extends further toward the inside 289 of the intermediate spring seat 287 And extends beyond the intermediate spring seat 287. The upper end 238 of the third coil spring 237 is engaged with the lower spring retaining groove 299 at the lower end of the second spring retaining member 290 and the lower end 239 is engaged with the second spring retaining groove 299 of the second cylinder 220 And is engaged with the spring engagement groove 286 of the spring seat 285 fixed to the free end portion 226. The third coil spring 237 is set to function in parallel with the second coil spring 234 and acts the same as the second coil spring 234. That is, when the relative rotational movement position of the first cylinder 210 and the second cylinder 220 is within the range between the initial rotational position and the second rotational position by the action of the second clutch mechanism 245, The second spring retaining member 290 and the shaft 250 to impart rotational elasticity to the first cylinder 210 in the closing direction of the door, The second tubular body 220 is not twisted any more, and rotational elastic force is not applied to the second tubular body 220. [ By thus setting the two coil springs in parallel in the second cylinder 220, the rotational elastic force at the time of closing the door is further increased, and the door can be closed more reliably.

In the above embodiment, the first angle is set to about 90 degrees and the second angle is set to about 30 degrees, and these angles can be arbitrarily set. In the second embodiment, although the second and third coil springs 234 and 237 are set as the two auxiliary coil springs in the second cylinder 220, even if additional auxiliary coil springs are set in parallel do.

100: door hinge closure having free stop function (first embodiment)
105: sliding bearing member 106: inner peripheral surface
110: first cylinder 112: first wing
114: first connection end 116: first free end
118: longitudinal axis 120: second cylinder
122: second wing 124: second connecting end
125: inner peripheral surface 126: second free end
130: first coil spring 131: upper
132: lower end 134: second coil spring
135: upper 136: bottom
140: first clutch mechanism 142: first clutch element
145: second clutch mechanism 147: second clutch element
150: Axis 151: First end
152: second end portion 153: shaft body
154: spring catch groove (shaft) 156: outer peripheral surface
158: first inner clutch element engaging groove 159: second inner clutch element engaging groove
160: first housing 162: small-diameter portion
163: outer circumferential surface 164: large-
165: inner peripheral surface 168: first outer clutch element engaging groove
170: first spring engaging member 171: outer peripheral surface
172: inner peripheral surface 174: first clutch element holding opening
176: spring catch groove 180: second housing
182: inner peripheral surface 184: second outer clutch element engaging groove
185: spring seat
186: Spring catch groove (of spring seat)
190: second spring latching member 191: upper cylinder portion
192:
194: Spring latching groove (of the second spring latching member)
196: outer peripheral surface 197: inner peripheral surface
198: Second clutch element retaining opening 199:
200: door hinge closure having free stop function (second embodiment)
210: first cylinder 220: second cylinder
226: second free end 234: second coil spring
236: lower end 237: third coil spring
238: top 239: bottom
245: second clutch mechanism 250:
285: spring seat 286: spring catch groove
287: intermediate spring seat 288: spring catch groove
289: inner hole 290: second spring engaging member
292: lower shaft portion 294: upper spring catch groove
299: Lower spring catch groove

Claims (4)

A first cylinder having a first free end at one end and a first connecting end at the other end and being mounted on one of the door and the door frame,
A second connecting body having a second free end at one end and a second connecting end at the other end and being mounted on the other of the door and the door frame, the second connecting end being adjacent to the first connecting end, A second cylinder aligned in the direction of the longitudinal axis of the first cylinder relative to the first cylinder and connected to the first cylinder in a rotatable manner relative to the first cylinder,
A first end fixed to the first free end of the first tubular body, a second end adjacent to the second connection end in the second tubular body, and a second end extending from the first end into the first tubular body, A shaft extending in a concentric manner with respect to the one cylinder and having a shaft body extending to the second end,
A first spring engaging member disposed between the outer circumferential surface of the second end of the shaft and the inner circumferential surface of the second cylinder and disposed so as to be rotatable about the longitudinal axis with respect to the shaft and the second cylinder,
A second spring engaging member disposed between the outer circumferential surface of the second end of the shaft and the inner circumferential surface of the second cylinder and rotatably about the longitudinal axis with respect to the shaft and the second cylinder, A second spring engaging member disposed on the second free end side of the second cylinder with respect to the engaging member,
A first coil spring formed concentrically around the shaft body in the first cylinder, the first coil spring having one end engaged with the shaft and the other end engaged with the first spring engagement member;
A second coil spring formed in the second cylinder, the second coil spring having one end engaged with the second spring engagement member and the other end engaged with the second cylinder,
Wherein a relative rotational movement position of the first cylinder and the second cylinder about the longitudinal axis is set to an initial rotational position corresponding to a state in which the door is closed, The first spring engaging member is hooked to the second cylinder and when the first spring engaging member is in the first rotational position, the door is opened at a position corresponding to a state in which the door is largely opened A first clutch mechanism for releasing engagement between the first spring engagement member and the second cylinder and engaging the first spring engagement member with the shaft,
When the relative rotational movement position is between the initial rotational position and the second rotational position corresponding to the opened state by the second angle different from the first angle, When the second spring engagement member is in the position corresponding to the state in which the door is largely opened than when the second rotation movement position, the second spring engagement member is released from engagement with the shaft, And a second clutch mechanism configured to engage the spring engaging member with the second cylinder, the door hinge closure having a free stop function. The method according to claim 1,
Wherein the first rotational position and the second rotational position are set such that the first angle is larger than the second angle. The method according to claim 1,
A first housing disposed between the first spring engagement member and the second cylinder and fixed to the second cylinder,
A second housing disposed between the second spring engaging member and the second cylinder and fixed to the second cylinder,
Wherein the first spring engagement member has a first clutch element holding opening penetrating between the shaft and the first housing and a first clutch element held in the first clutch element holding opening,
The second spring engagement member has a second clutch element holding opening penetrating between the shaft and the second housing and a second clutch element held in the second clutch element holding opening,
In the first housing, a first outer clutch element retaining groove is formed on an inner peripheral surface,
The second housing has a second outer clutch element retaining groove formed on an inner peripheral surface thereof,
The first inner clutch element retaining groove and the second inner clutch element retaining groove are formed on the outer peripheral surface of the second end portion of the shaft,
The first clutch mechanism is configured such that when the relative rotational movement position is between the initial rotational position and the first rotational position, the first clutch element is engaged with the first outer clutch element engagement groove, When the spring engagement member is engaged with the first housing and the relative rotational movement position exceeds the first rotational movement position, the first clutch element is not engaged with the first outer clutch element engagement groove, The first clutch engaging member is engaged with the first inner clutch engaging groove to engage the first spring engaging member with the shaft,
The second clutch mechanism is configured such that when the relative rotational movement position is between the initial rotational position and the second rotational position, the second clutch element is engaged with the second outer clutch element engagement groove, When the spring engagement member is engaged with the first housing and the relative rotational movement position exceeds the second rotational movement position, the second clutch element is not engaged with the second outer clutch element engagement groove, And a second spring engaging member engaged with the second inner clutch element engaging groove so as to be engaged with the shaft. The method according to claim 1,
A cylindrical intermediate spring seat fixed to an inner peripheral surface of the second cylinder and a third coil spring disposed in the second cylinder,
The other end of the second coil spring is engaged with the intermediate spring seat,
The second spring engaging member passes through the inner hole of the second coil spring and extends beyond the intermediate spring seat,
Wherein the third coil spring is formed between the intermediate spring seat and the second free end of the second cylinder and has one end engaged at a position over the intermediate spring seat of the second spring engagement member, Door hinge closure with free stop function hanging on two cylinders.

Images