KR20070009911A - A door damper with a torsion spring - Google Patents

Abstract

A door damper with a torsion spring is provided to close a door stably by operating hydraulic pressure and torsion in shutting the door, to cut down cost by modifying the structure, and to improve appearance by reducing the size. A door damper(1000) with a torsion spring(600) includes a hollow housing(100), a hydraulic regulator(200) combined with a lower part of the housing and provided with an oil storage hole, a guide member with a spline part, an oil passage communicated with a body through the oil storage hole and a hydraulic adjusting screw regulating oil flow, a piston(300) engaged with the spline part, moved up and down and provided with a screw hole and a check valve, a cover(400) covering an upper part of the housing and having a central guide hole, a shaft(500) turned and contacted by a slide unit and provided with a screw part thread-connected to the screw hole of the piston, an expansion part(520) contacted to an upper part of the guide member and a polygonal part, and the torsion spring fastened to a lower part of the expansion part of the shaft by surrounding the guide member and combined with an upper part of the hydraulic regulator. The slide unit is formed of a bushing.

Description

DOOR DAMPER WITH A TORSION SPRING}

1 is a cross-sectional view of a state of use of the door closed state as a door shock absorber having a torsion spring according to the present invention.

Figure 2 is a cross-sectional view of the use state of the door open state as a door shock absorber having a torsion spring according to the present invention,

3 is a plan sectional view taken along the line “A-A” of FIG. 1.

<Description of the symbols for the main parts of the drawings>

1000: door shock absorber

100: housing

200: hydraulic regulator

210: body 220: guide member

222: oil storage hole 224, 324: spline

230: Hydraulic adjusting screw

300: piston

310: screw hole 320: check valve

400: cover body

500: shaft

510: screw portion 520: extension

600: torsion spring

The present invention relates to a door shock absorber, and more particularly, a spring provided to the door shock absorber has a torsional force to open and close the door, thereby improving the opening and closing force of the door, and the structure of the door shock absorber. The present invention relates to a door shock absorber having a torsion spring that can be simply designed and manufactured to significantly reduce the economic cost.

In general, the door shock absorber is installed between the door and the door frame to provide a hydraulic shock absorbing force when opening and closing the door through the spring and the hydraulic force provided therein.

Many of these door shock absorbers have been proposed and implemented, and for example, the domestic patent registration No. 2003-403366 "door open and close shock absorber" has been released.

In summary, the fixing plate to be fixed to the door frame, the rotating plate fixed to the door to rotate, the housing fixed to the lower portion of the rotating plate and the buffer buffer, the shaft to be connected to the fixing plate, the shaft A piston which flows up and down in the housing according to the rotation of the piston and provides hydraulic power through the flow path, a compression spring having elastic force to restore the piston to its initial state, and a hydraulic adjustment screw for sealing the housing and adjusting the hydraulic pressure. It is configured to include a cap having a.

The door opening and closing shock absorber, the compression spring has a compressive force through the lifting operation of the piston through the shaft when the door rotates, and has a self-closing function through the restoring force of the compression spring and the hydraulic buffer force through the flow path during the closing operation of the door. do.

In other words, when the door is opened and closed, the hydraulic pressure through the flow path and the compression spring restoring force is provided to the hydraulic buffer force. When the compression force of the compression spring is large, the hydraulic force is controlled so that the door can be stably closed. do.

However, in the case of the door opening / closing shock absorber, the closing force of the door is performed by the restoring force of the compression spring. In order to increase the closing force of the door, the length of the compression spring must be increased, and in this case, the length of the housing must be increased. The length of the housing is larger than that of the door, and there is a problem in that the appearance is not beautiful.

In addition, the recent door has a structure in which the closing speed is gradually closed in a state in which the closing speed is controlled in multiple stages to prevent injury at the moment of closing of the door, so that the restoring force of the spring must be operated even at the closing time of the door. When the spring is applied, the restoring force is greatly reduced when the speed of the door is closed, and thus the door is not completely closed due to the weakening of the closing force of the door.

In addition, in order to solve this problem, when the size of the compression spring is increased, the size of the housing is relatively large as described above.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide a stable closing force of the door by allowing the door shock absorber for opening and closing the door with a buffer force to open and close the door by the torsion spring. will be.

Another object of the present invention is to improve the structure so that the movement path of the hydraulic pressure in the internal structure of the door shock absorber can be made in the minimum section to reduce the cost and minimize its size.

In order to achieve the above object, the present invention, in the door shock absorber which is provided on the hinge bracket provided on the door and the door frame to provide a cushioning force when opening and closing the door,

A hollow housing; The body is fixedly coupled to the lower end of the housing, an oil storage hole in the center of the upper surface of the body and a pipe-shaped guide member for forming a spline on the upper side of the oil storage hole protrudes, and through the bottom surface of the oil storage hole A hydraulic regulator having an oil passage communicating with the outside of the body and a hydraulic adjustment screw for adjusting an oil movement amount of the oil passage on a bottom thereof; A piston having an upper portion engaged with the spline portion and moving only up and down in the oil storage hole of the guide member, having a screw hole open upward along the axial direction at the center thereof, and having a check valve at a lower bottom surface thereof; A cover body covering an upper end of the housing and having a central guide hole; A threaded portion is formed to be screwed into the screw hole of the piston at the lower end portion, and is passed through the guide hole of the cover body at the middle portion thereof and is caught on the bottom thereof so as to be rotatably adhered by a known slide means and at the same time the upper end of the guide member. Is formed in the expansion portion is in close contact, the upper portion of the screw portion and the lower portion of the shaft sequentially formed; And a torsion spring surrounding the guide member and having an upper end fixed to the bottom of an extension of the shaft, and a lower end fixed to the upper surface of the hydraulic regulator.

The slide means is a known bushing.

Hereinafter, a door shock absorber having a torsion spring according to the present invention will be described with reference to the accompanying drawings. In describing the configuration of the present invention, the presently well-known part will be described in detail when it is determined that the gist of the present invention can be clouded. Will be omitted.

1 to 3, the present invention relates to a door shock absorber 1000 which is applied to a hinge hole of a hinge bracket installed on a door and a door frame, and provides a cushioning force when the door is opened and closed.

The door shock absorber 1000 includes a housing 100 coupled to the door side hinge bracket, a hydraulic regulator 200 inserted into and coupled to the housing 100, and a lifted inside the hydraulic regulator 200. It includes a piston 300, a cover 400, a shaft 500 for elevating the piston 400, and a torsion spring 600 for generating a torsion force when the door rotates.

The housing 100 is formed of a hollow pipe member, and screw portions 110 and 120 are formed on upper and lower portions thereof, and the cover portions 400 and hydraulic pressure control are provided on the screw portions 110 and 120. Sieves 200 are respectively fixed and fixed.

The hydraulic regulator 200 is composed of a body 210, a guide member 220 is built up and fixed in the center of the upper surface of the body 210, the body 210 is a lower threaded portion of the housing 100 120 is fixed and coupled. In addition, the guide member 220 is erected and fixed in the center of the upper surface of the body 210, the guide member 220 is formed in an oil storage hole 222 opened upwards in the pipe shape, the oil The storage hole 222 has a spline portion 224 formed on the upper inner wall up and down a predetermined section. In addition, an oil passage 212 is formed on the bottom surface of the oil storage hole 222 to communicate with the outside of the body 210 through the bottom surface, and the oil passage 212 at the center of the body 210. The hydraulic adjustment screw 230 to adjust the amount of oil movement is coupled.

Here, the screw adjusting portion 232 of the hydraulic adjustment screw 230 is exposed to the outside of the housing as known techniques can be rotated according to the user's selection.

In addition, an oil channel 226 is formed at an upper side of the guide member 220 to guide the oil.

The piston 300 is located in the oil storage hole 222 of the guide member 220, the lower side slides up and down in the oil storage hole 222 of the guide member 220, the upper outer diameter of the guide The spline portion 324 is formed to be engaged with the spline portion 224 of the member 220 to move only up and down. In addition, a screw hole 310 is opened upwardly along the axial direction at the center thereof, and a one-way check valve 320 is provided on the lower bottom surface to prevent the inflow of oil. An O-ring is provided along the circumference of the lower outer circumferential surface of the piston 300 to maintain airtightness when the piston 300 moves up and down.

The cover body 400 is a ring-shaped member is screwed to the upper threaded portion 110 of the housing 100 through a threaded portion formed on its outer peripheral surface, the guide hole 410 is formed in the center thereof. In addition, the inner circumferential wall surface of the guide hole 410 is provided with an O-ring to perform the airtight maintenance function when the slide of the shaft 500 to be described later.

The shaft 500 has a threaded portion 510 formed at a lower end thereof so as to be screwed into the threaded hole 310 of the piston 300, and through the guide hole 410 of the cover body 400 at the middle portion thereof. It is caught by the bottom surface is rotatably contacted by a known slide means and at the same time the upper end of the guide member 220 is formed an extension 520 is in close contact. In addition, the upper portion passing through the guide hole 410 of the cover 400, the screw portion 530 and the polygonal portion 540 is formed sequentially on the lower side to prevent the departure from the hinge bracket. .

Here, it is preferable that the bushing is provided in the extension part 520 of the shaft 500 and the cover body 400 closely contacted with the shaft 500 such that the cover body 400 and the shaft 500 are in sliding contact with each other.

In addition, an O-ring is provided on the inner circumferential surface of the guide hole 410 of the cover body 400 to maintain the airtightness when contacted with the outer surface of the shaft 500.

The torsion spring 600 is inserted into the housing 100 in a state of enclosing the guide member 220, and an upper end thereof is provided with a fixing groove formed at the bottom of the extension part 520 of the shaft 500. 521, and the other end of the lower side is fixedly coupled to the fixing groove 214 formed on the upper surface of the body 210 of the hydraulic regulator 200 to torsional force during the relative movement of the shaft 500 and the housing 600. Will occur.

Referring to the assembly and operation of the door shock absorber according to the present invention configured as described above are as follows.

When assembling, first, the hydraulic regulator 200 is fixedly coupled to the lower end of the housing 100 as shown in FIG. 1. Then, the piston 300 is inserted into the guide member 220 of the hydraulic regulator 200 such that the piston 300 and the guide member 220 are splined as shown in FIG. 3. Thereafter, the torsion spring 600 is wrapped around the guide member 220, and the lower end thereof is fixed to the fixing groove 214 formed on the upper surface of the body 210 of the hydraulic regulator 200, and the piston ( After screwing the threaded portion 510 of the shaft 500 to the threaded hole 310 of the 300, the torsion spring 600 of the torsion spring 600 is formed in the fixing groove 521 formed at the bottom of the extension 520 of the shaft 500. Make sure the top is fixed. Then, when the cover body 400 is fixedly coupled to the upper end of the housing 100, the assembly of the door shock absorber 1000 is completed, and the door shock absorber 1000 is connected to the hinge bracket provided on the door and the door frame.

At this time, if the upper end of the housing 100 is fixedly coupled to the bottom of the door side hinge bracket and at the same time the upper end of the shaft 500 is fixedly coupled to the door frame side hinge bracket, installation of the door shock absorber 1000 is completed.

In operation, when the door is opened in the state shown in FIG. 1, the housing 100 is first rotated to generate an elastic force in the torsion spring 600, and at the same time, the piston 300 is a threaded portion of the shaft 500. 510 and the tightening direction is elevated and at this time the oil inside the piston 300 is moved quickly through the check valve 320 to the oil storage hole 222 of the guide member 220, even if the hydraulic force does not significantly act As shown in 2, the door can be easily opened.

Subsequently, when the external force of the door is removed, a restoring force is generated in the torsion spring 600, thereby closing the door, and the piston 300 screwed to the shaft 500 moves downward in the release direction. At this time, the oil is moved to the outside of the guide member 220 through the oil passage 212 by the blockage of the check valve 320 as shown in Figure 1 and at the same time the oil passage provided on the top of the guide member 220 ( It is guided to the inside of the piston 300 through 226.

Here, the oil amount of the oil passage 212 may be adjusted through the hydraulic adjustment screw 230, and at this time, the hydraulic force can be adjusted.

Therefore, the door shock absorber having a torsion spring according to the present invention, the spring of the door shock absorber that provides a closing force when opening and closing the door is made of a torsion spring and the hydraulic force is operated along with the torsion force during the closing operation of the door. It has the effect of being able to close stably.

In addition, the structure of the door shock absorber to improve the structure so that the movement path of the hydraulic can be made in the minimum section has the effect of minimizing the size with cost reduction.

That is, there is an effect that can achieve the maximum cost savings by simplifying the parts.

In addition, the size can be reduced by the simplification of the component has the effect of achieving a beautiful appearance.

Claims (2)

In the door shock absorber is installed on the hinge bracket provided on the door and the door frame to provide a cushioning force when opening and closing the door, A hollow housing; The body is fixedly coupled to the lower end of the housing, an oil storage hole in the center of the upper surface of the body and a pipe-shaped guide member for forming a spline on the upper side of the oil storage hole protrudes, and through the bottom surface of the oil storage hole A hydraulic regulator having an oil passage communicating with the outside of the body and a hydraulic adjustment screw for adjusting an oil movement amount of the oil passage on a bottom thereof; A piston having an upper portion engaged with the spline portion and moving only up and down in the oil storage hole of the guide member, having a screw hole open upward along the axial direction at the center thereof, and having a check valve at a lower bottom surface thereof; A cover body covering an upper end of the housing and having a central guide hole; A threaded portion is formed to be screwed into the screw hole of the piston at the lower end portion, and is passed through the guide hole of the cover body at the middle portion thereof and is caught on the bottom thereof so as to be rotatably adhered by a known slide means and at the same time the upper end of the guide member. Is formed in the expansion portion is in close contact, the upper portion of the screw portion and the lower portion of the shaft sequentially formed; And a torsion spring surrounding the guide member, the upper end of which is fixed to the bottom surface of the extension part of the shaft, and the other end of which is fixed to the upper surface of the hydraulic regulator. The method according to claim 1, The slide means is a door buffer having a torsion spring, characterized in that the bushing.

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