JPS6272880A - Damper hinge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a damper hinge that adjusts the opening/closing speed of a door by hydraulic pressure (vA).

[Conventional technology]

As a conventional damper hinge, one shown in FIG. 3 is known. An upper hinge cylinder 101 having an upper hinge blade 100 and a lower hinge cylinder 103 having a lower hinge blade 102 are arranged adjacent to each other on the circumferential axis, and the upper hinge cylinder 101 has a hollow shaft body. 104 is provided. A protruding portion of the shaft body 104 that protrudes to the outside of the hinge cylinder 101 is rotatably inserted into the other hinge cylinder 103 having a cylindrical shape with a bottom. A bearing portion 105 is provided at the opening of the hinge cylinder 103 to rotatably support the shaft body 104 and to close the opening. Oil is sealed inside the solid hinge cylinder 103 with a bottom. Shaft body 10
A piston 106 is splined to the tip of the protrusion 4. That is, a large number of key grooves are cut in the tip of the shaft body 104, and the inner peripheral surface of the piston 106 (fitting hole 10
9) is cut with a groove that fits into the peak between the key grooves. Therefore, the shaft body 104 can move in the axial direction on the shaft, and the rotational force of the shaft body 104 can be transmitted to the piston 106. A male threaded portion 107 is formed on the outer periphery of the piston 106, and a female threaded portion 108 into which the male threaded portion 107 is screwed is formed on the inner peripheral surface of the hinge cylinder 103. The spline engagement portion is configured to allow sealed oil to flow therethrough. A regulating passage 110 and a valve passage 111 communicating with the outside of the piston 10'6 are formed at the bottom of the fitting hole 109 of the piston 106 into which the shaft body 104 is fitted. A check valve 112 is provided on the outside of this valve passage 111. A speed rod 113 is rotatably inserted into the hollow portion of the shaft body 104. A tapered portion 114 is formed at the tip of the regulating rod 113, and this tapered portion 114 is inserted into the regulating passage 110. Oil is sealed in the fitting hole 109, the damper chamber 115 formed on the tip end side of the piston, and the intersection 116 on the base end side of the piston 106 to control the flow rate of oil movement between the fitting hole 109 and the damper chamber 115. The door closing speed is i+IJviB.

That is, the upper hinge I! When 101 is rotated in the door opening direction, the piston 106 provided in the lower hinge cylinder 103 moves upward for screw fitting, and the oil in the fitting hole 109 opens the check valve 112. damper chamber 11
Flows into 5. Next, due to the biasing force of the spring,
When the upper hinge cylinder 1°1 rotates in the door closing direction, the piston 106 provided in the lower hinge cylinder 103 moves downward and reduces the damper chamber 115, so that the check valve 112 closes the valve passage 111. Dunbar 11 will be closed.
The oil in the speed control passage 1 is regulated by the speed control rod 113.
10 and flows into the fitting hole 109. As the piston 106 moves downward, the passage area of the regulating passage 110 is temporarily narrowed, so that the flow rate of oil movement is reduced, and the movement of the piston 106 is braked. In this way, the rotational speed of the upper hinge cylinder 101 in the door closing direction,
In other words, the door closing speed is braked.

[Problem to be solved]

Conventional damper hinges cannot cope with changes in the viscosity of oil in the oil chamber due to temperature changes. In other words, when the temperature is high, the viscosity of the oil decreases, causing the door to close abruptly, and conversely, when the temperature is low, the viscosity of the oil increases, resulting in excessive braking.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a damper hinge that can always close a door at a constant speed in response to changes in viscosity caused by changes in temperature of oil in an oil chamber.

Means for Solving Problem C] In order to achieve the above-mentioned object, the present invention includes a pair of hinge bodies each provided with a hinge blade provided on the circumferential axis, and a hinge provided on one of the hinge cylindrical bodies. The hollow shaft body and the protruding portion of the shaft body protruding to the outside of the hinge cylinder are rotatably inserted into the other hinge cylinder, which is a bottomed cylinder, so that the opening of the other hinge cylinder is closed. an oil chamber formed in the other hinge cylinder in which oil is sealed, a piston that is spline-engaged with the tip of the protrusion of the shaft body, and the other side that is screwed into the outer peripheral male thread of the piston. An oil passage is formed between a female thread formed on the inner periphery of the piston, a fitting hole formed inside the piston into which the tip of the protrusion of the shaft fits, and the protrusion of the piston shaft. a sliding hole, a speed regulating passage and a valve passage formed at the tip of the piston so as to communicate from the fitting hole to the outside of the piston, a check valve provided on the outer cloth side of the valve passage, and a hollow space in the shaft body. A speed control rod rotatably inserted into the speed control section, and a material that is attached to this speed control rod and inserted into the speed control passage, has a tapered side surface, and is capable of expanding and contracting in a predetermined manner according to changes in oil temperature. It consists of a valve body selected from

(Function) In this invention, when the viscosity of the oil in the oil decreases due to an increase in temperature, the volume of the valve body increases, narrowing the gap in the regulating passage, and controlling the closing speed to prevent sudden closing. At the same time, when the temperature drops and the viscosity of the oil in the oil valve increases, the valve body reduces its volume and enlarges the opening of the regulating passage, causing the closing speed to become slower than necessary. It will not become.

(Example) Preferred examples of actual sushi according to the present invention will be described below with reference to the drawings.

A pair of hinge cylinders 1 and 2 each provided with a hinge blade 3.4 provided on the circumferential axis, a hollow shaft body 5 provided on one hinge cylinder 1, and a hinge cylinder of the shaft body 5. In order to rotatably insert the protrusion projecting to the outside of one hinge cylinder 2 into the other hinge cylinder 2, which is a bottomed cylinder, the opening of the other hinge cylinder 2 is
A bearing part 6 provided so as to be similar to Ii, and oil chambers 7 to 10 in which oil is sealed and formed in the other hinge cylinder body 2.
A piston 1 is engaged with a spline at the tip of a protrusion of a shaft body 5
1 and a female threaded part 13 formed inside the other hinge cylinder 2 which is screwed into the outer peripheral male threaded part 12 of the piston 11, as in the conventional example.

A gap where the shaft body 3 and the piston 11 are spline-engaged forms a sliding hole 14 that serves as an oil passage.

Note that 91 sliding holes may be formed to accommodate the gaps at the spline engagement portions. The oil chamber 9 is also a fitting hole into which the tip of the protrusion of the shaft body 5 fits. A regulating passage 15 and a valve passage 16 are formed at the tip of the piston 11 so as to communicate from the fitting hole (oil chamber) 9 to the outside of the piston 11. A check valve 17 is provided on the outside of the valve passage 16. A speed regulating shaft 18 is rotatably provided in the hollow portion 5A of the shaft body 5.
is inserted. The regulating rod 18 is rotatably supported on one end side of the shaft body 5, and on the upper end side in the drawing, and a hollow m5 is provided.
The support member 19 that closes A is the attachment. The tip of the 11th speed rod 18 protrudes from the tip of the shaft body 5, and the valve body 20 is attached to this protruding portion. The valve body 20 has a mounting piece part 2OA,
It consists of a main body part 20B inserted into the regulating passage 15,
This main body portion 20B is formed with a tapered portion 20C that becomes thinner toward the tip, and a male threaded portion 20D is formed on the outer circumferential surface other than the tapered portion 2°C. A stopper 21 is attached to the tip of the main body portion 20B. A female threaded portion 15A is formed on the inner surface of the regulating passage 15 and is screwed into the male threaded portion 20D. A notch 18A is formed at the tip of the regulating rod 18, and the mounting piece 2OA of the valve body 20 fits into this notch 18A. Speed regulating rod 18
By rotating the valve body 20, the height position of the valve body 20 within the regulating passage 15 is changed. In other words, by rotating the regulating rod 18 to either the left or right, the valve body 20
The main body portion 20B is raised or lowered in the drawing, and the opening area of the regulating passage 15 is changed. This valve body 2o
At least the main body portion 20B is selected from a material that can expand and contract in a predetermined manner according to changes in the temperature of the oil. For example, a material that expands at a predetermined ratio at high temperatures and contracts at a predetermined ratio at low temperatures is selected from among synthetic resin materials, metals, and the like.

Using the damper hinge configured in this way, when the upper hinge cylinder 1 rotates in the door opening direction, the piston 11 moves upward in the drawing, and the oil in the oil chamber 7 passes through the sliding hole 14 and is fitted. It reaches the joint hole (oil chamber) 9, roughly opens the check valve 17, and flows into the oil chamber (which becomes a damper chamber) 10. When closing the door, the door opens due to the force of the unspoken spring, but at the beginning of this closing period, the piston 11 descends from the state shown in the first factor, so the damper chamber (oil chamber) 1
The oil in 0 cannot flow out from the valve passage 16 closed by the check valve 17 to the fitting hole (oil chamber) 9, and passes through the regulating passage 15. At this time, 7--t<part 2 of the valve body 20
Since the flow area of the regulating passage 15 is reduced by 0C, sudden closing is prevented.

Control IR matching is possible by adjusting the position of the valve body 20 in the speed regulating passage 15 by adjusting the speed governor rod 18 .

(Effects) As explained above, in this invention, the valve body attached to the regulating rod is inserted into the regulating passage, is formed into a tapered shape on its side, and expands and contracts in a predetermined manner according to changes in oil temperature. The valve body expands or contracts in volume to follow changes in oil viscosity caused by temperature changes. It can always ensure a smooth melosal action without being affected by winter temperature differences. In addition, if a female thread is formed on the inner surface of the regulating passage, and a male thread is formed on the outer periphery of the valve body, excluding a tapered part, to screw into the female thread of the regulating passage, you can adjust the closing speed to your preference. It becomes easy to make multiple choices.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing a preferred embodiment of the present invention, and FIG.
The figure is a bottom view of the valve body, and FIG. 3 is a longitudinal sectional view showing a conventional example. 1.2... Hinge cylinder body, 3.4... Hinge blade, 5... Shaft body, 5A... Hollow part, 6... ... Bearing part, 7.8, 9.10 ... Oil and air, 11 ... Piston, 12 ... Male thread part, 13 ... Female thread part, 14...Sliding hole, 15...Governing passage, 16:...Valve passage, 17...Check valve, 18... Speed regulator, 20... Valve body, 20C... Part of the taper. 1 Figure 3 3rd L＜+100

Claims (1)

[Claims] 1. A pair of hinge cylinders each provided with a hinge blade provided on the circumferential axis, a hollow shaft provided in one of the hinge cylinders, and an outside of the hinge cylinder of the shaft. a bearing portion provided to close the opening of the other hinge cylinder in order to rotatably insert the protrusion projecting into the other hinge cylinder; an oil chamber in which oil is sealed; a piston spline-engaged with the tip of the protrusion of the shaft body; a female threaded part formed on the periphery of the other hinge cylinder that is threadedly engaged with the male threaded part on the outer periphery of the piston; A fitting hole formed inside into which the tip of the protruding part of the shaft fits, a sliding hole formed between the piston and the protruding part of the shaft and serving as an oil passage, and a passage from the fitting hole to the outside of the piston. A speed control passage and a valve passage formed at the tip of the piston so as to communicate with each other, a check valve provided on the outside of the valve passage, a speed control rod rotatably inserted into the hollow part of the shaft body, and a speed control rod. A damper hinge that is attached to a rod and inserted into a regulating passage, and is formed with a tapered side surface and is made of a valve body selected from a material that can expand and contract in a predetermined manner according to changes in oil temperature. . 2. A female threaded part is formed on the inner surface of the speed regulating passage, and a male threaded part is formed on the outer periphery of the valve body, excluding the tapered part, to be screwed into the female threaded part of the speed regulating passage. The damper hinge according to item 1.