TWM506903U - Damper - Google Patents

Description

Damper

The present invention relates to a damper, and more particularly to a damper that can be mounted on a building, furniture or vehicle to provide a cushioning effect.

Referring to Fig. 1, a damper 1 disclosed in Taiwan Patent No. I451028 is for mounting on an animal product (not shown) such as a door, a cabinet door and a drawer, and includes: An outer tube 11 of a receiving space 111, a spring 12 mounted on the top of the receiving space 111, a spring seat 13 movably supported at the bottom of the spring 12, and a movable position below the spring seat 13 And abutting against the floating plug 14 of the spring seat 13, a piston 15 movably spaced below the floating plug 14, a ring 16 sleeved on the periphery of the piston 15, and a downward axial insertion The outer tube 11 is at the top and passes through the spring seat 13 and the center of the float 14 and is connected to the piston rod 17 of the piston 15. The float 14 divides the containment space 111 into a liquid zone 112 below which the liquid is contained, and a gas zone 113 above it. The piston 15 is located within the liquid zone 112.

When the animal can be switched, the piston 15 is driven by the piston rod 17 relative to the outer tube 11, moving downwardly and on the liquid Lifting pushes the float plug 14 and the spring seat 13 upwardly to press the closed position of the spring 12, and an upward movement and lowering of the liquid to release the spring force by the spring 12 to push the spring seat 13 and the float plug 14 downwardly. Axial slip between the open position (see Figure 2). Therefore, by the design of the damper 1, the animal product can be made to have a cushioning effect when it is closed.

Since the floating plug 14 is made of a soft material such as rubber or silicone rubber, in order to prevent the floating plug 14 from being deformed, warped or twisted directly by the urging force of the spring 12, it is necessary to provide for the support. The spring 12 is rigid and the spring seat 13 is rigid, and the floating plug 14 is abutted against the spring seat 13 to maintain balance, so that the piston rod 17 extending through the center of the float 14 is not biased. The ground moves axially. Therefore, the damper 1 needs to additionally provide the spring seat 13 above the floating plug 14, but the two are not integrated, which will cause the damper 1 to be less smooth in operation.

Therefore, the object of the present invention is to provide a damper that can be smoothly operated to have better damping performance.

Thus, the novel damper comprises an outer tube unit and a piston unit. The outer tube unit includes an outer tube defining an axially extending receiving space, the receiving space having a lower end portion, an upper end portion above the lower end portion, and a lower end portion An intermediate portion with the upper end portion. The piston unit includes an elastic member installed in the receiving space of the outer tube and located between the upper end portion and the intermediate portion, and a floating seat supported on the bottom of the elastic member and axially movable under pressure An axially movable mounting in the housing space and located in the floating a piston below the movable seat, and a piston rod axially inserted into the top of the outer tube and passing through the center of the floating seat and connecting the piston, the floating seat partitioning the housing space into a position below and housing a liquid region of the liquid, and a gas zone above it, wherein the piston is located in the liquid zone and partitions the liquid zone into a first liquid portion below it and a second portion above it Liquid section. The piston unit is movable relative to the outer tube unit between a closed position and an open position, wherein the piston moves downwardly toward the lower end, and the floating seat moves upwardly away from the intermediate portion and is pressed The elastic member causes it to accumulate an elastic force. In the open position, the piston moves up to the intermediate portion, and the elastic member releases the elastic force to push the floating seat downward to the intermediate portion.

2‧‧‧External tube unit

21‧‧‧External management

22‧‧‧Containing space

221‧‧‧ lower end

222‧‧‧ upper end

223‧‧Intermediary Department

224‧‧‧Liquid zone

225‧‧‧ gas zone

226‧‧‧First Liquid Department

227‧‧‧Second Liquid Department

3‧‧‧piston unit

31‧‧‧Flexible parts

32‧‧‧ floating seat

321‧‧‧oil seal body

322‧‧‧First O-ring

323‧‧‧Second O-ring

324‧‧‧First ring groove

325‧‧‧second ring groove

33‧‧‧Piston

331‧‧‧Piston body

332‧‧‧ ring

333‧‧‧ Groove

334‧‧‧ Large diameter hole

335‧‧‧ small diameter hole

34‧‧‧ piston rod

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a cross-sectional view of a damper disclosed in Taiwan Patent No. I451028, illustrating a piston unit. 2 is in a closed position relative to an outer tube unit; FIG. 2 is a view similar to FIG. 1 illustrating the piston unit in an open position relative to the outer tube unit; FIG. 3 is an embodiment of the present damper FIG. 4 is a cross-sectional view of the embodiment showing a piston unit in a closed position relative to an outer tube unit; FIG. 5 is an incomplete cross-sectional enlarged view of the embodiment, illustrating The flow of liquid during the process of moving to the closed position; Figure 6 is a view similar to Figure 4, illustrating the piston unit in an open position relative to the outer tube unit; and Figure 7 is an incomplete cross-sectional enlarged view of one of the embodiments illustrating movement to the open position The flow of liquid in the process.

Referring to FIG. 3, FIG. 4 and FIG. 5, an embodiment of the damper is installed on a building, a piece of furniture or a vehicle, for example, on an animal door (not shown) such as a door, a door and a drawer. To make the animal product cushion or shock absorption effect. The damper comprises an outer tube unit 2 and a piston unit 3.

The outer tube unit 2 includes an outer tube 21 defining an axially extending receiving space 22. The housing space 22 has a lower end portion 221, an upper end portion 222 positioned above the lower end portion 221, and an intermediate portion 223 positioned between the lower end portion 221 and the upper end portion 222.

The piston unit 3 includes an elastic member 31 mounted in the receiving space 22 of the outer tube 21 and located between the upper end portion 222 and the intermediate portion 223 and abutting against the top of the outer tube 21, and a support member a floating seat 32 at the bottom of the elastic member 31 and axially movable by pressure, a piston 33 axially movably spaced below the floating seat 32, and a top axially inserted into the top of the outer tube 21 And passing through the center of the floating seat 32 and connected to the piston rod 34 of the piston 33.

The floating seat 32 divides the containment space 22 into a liquid zone 224 below which the liquid is contained, and a gas zone 225 above it. The floating seat 32 floats as the pressure between the liquid and the gas fluctuates The movement, that is, the size of the space of the liquid zone 224 and the gas zone 225, relatively changes as the floating seat 32 is displaced up and down. In the present embodiment, the liquid in the liquid zone 224 is oil, and the gas in the gas zone 225 is air. The piston 33 is positioned within the liquid zone 224 and partitions the liquid zone 224 into a first liquid portion 226 below it and a second liquid portion 227 above it. Moreover, the piston 33 is driven by the piston rod 34 to move up and down, that is, the space of the first liquid portion 226 and the second liquid portion 227 is relatively changed as the piston 33 moves up and down, of course, As the piston 33 moves, liquid also flows between the first liquid portion 226 and the second liquid portion 227.

The detailed configuration of the piston unit 3 will be further examined below. The elastic member 31 is a compression spring. Of course, the elastic member 31 can be replaced with other elastic structures, and even the number of compression springs is increased, so the design is not limited to the embodiment.

The floating seat 32 has an oil seal body 321 which is hollow and has a piston rod 34 extending therethrough, a first O-ring 322 which is embedded in the oil seal body 321 and abuts against the piston rod 34, and an embedded A second O-ring 323 is disposed on the periphery of the oil seal body 321 and adjacent to the outer tube 21. The oil seal body 321 is a ring-shaped body, and has a first ring groove 324 recessed on an inner circumferential surface and embedded by the first O-ring 322, and a ring is recessed on an outer circumferential surface and a second ring groove 325 for the second O-ring 323 to be embedded. The oil seal body 321 is made of a non-deformable rigid material such as metal or thermosetting plastic. The first O-ring 322 and the second O-ring 323 are both made of a deformable flexible material such as rubber or silicone. Must be stated Therefore, the first O-ring 322 and the second O-ring 323 can be selected from commercially available O-rings, so that the cost of mold development can be omitted.

The piston 33 has a piston body 331 and a ring 332 sleeved around the periphery of the piston body 331. The piston body 331 has a groove 333 which is recessed radially inwardly on an outer peripheral surface, a large diameter hole 334 which is recessed axially upward from a bottom surface and communicates with the groove 333, and a large diameter hole 334 from the large diameter hole 334 The tip end is radially outwardly communicated to the small diameter hole 335 of the outer peripheral surface. The diameter of the large diameter hole 334 is larger than the diameter of the small diameter hole 335. Moreover, the diameter of the piston body 331 above the recess 333 is larger than the diameter of the lower portion, so that the upper gap between the upper portion and the outer tube 21 is smaller than the lower gap between the lower portion and the outer tube 21, thus The flow of liquid through the lower side slit will be greater than the flow rate through the upper side slit. The ring 332 is an O-ring made of rubber or silicone material and is sleeved in the groove 333 so as to be movable up and down.

In use, when the piston unit 3 is moved relative to the outer tube unit 2 by a closed position as shown in FIGS. 4 and 5 to an open position as shown in FIGS. 6 and 7, the piston 33 is used by the piston rod. 34 moves up and moves up to the intermediate portion 223, and at the same time, the liquid pressure pushing the floating seat 32 gradually disappears due to the downward flow of the liquid, and the elastic member 31 releases the elastic force to be in an extended state, thereby the floating seat 32 is obtained. The mediator 223 is moved down. When the piston unit 3 is moved back relative to the outer tube unit 2 by the open position as shown in FIGS. 6 and 7 to the closed position as shown in FIGS. 4 and 5, the piston 33 is acted upon by the piston rod 34. Driving downwardly and moving closer to the lower end portion 221, and the floating seat 32 is pushed upward by the upward flowing liquid to move upwards therefrom The intermediate portion 223 presses the elastic member 31 to cause the elastic member 31 to be in a compressed state to accumulate elastic force.

It should be noted that, as shown in FIGS. 6 and 7, the ring 332 moves downward when the piston 33 moves upward, and the liquid in the second liquid portion 227 is not only the small diameter hole 335. The large diameter hole 334 flows into the first liquid portion 226, and the gap between the ring 332 and the outer tube 21 flows downward into the first liquid portion 226, so that the liquid flows down a large amount rapidly. This allows the animal to be opened at a faster rate. As shown in FIGS. 4 and 5, the ring 332 moves upward when the piston 33 moves downward. At this time, the ring 332 is pressed by a large amount of liquid flowing into the groove 333, so that it is slightly flattened and deformed. The fluid in the first liquid portion 226 can only flow into the second liquid portion 227 through the small diameter hole 335 through the large diameter hole 335, so that the liquid is blocked and the flow velocity is slowed down. The cushioning effect can be achieved, allowing the animal product to be closed at a slower speed.

In summary, the damper directly supports the elastic member 31 by the floating seat 32, and can be used to ensure that the elastic member 31 can be axially telescopically moved without biasing, which is equivalent to the patent No. I451028 of FIG. The floating plug 14 and the spring seat 13 function, and the floating seat 32 is designed to stably surround the first O-ring 322 to hold the piston rod 34, and let the second O-ring 323 The piston rod 34 is stably adjacent to the outer tube 21, so that the piston rod 34 can be stably positioned by the floating seat 32 by the top of the outer tube 21 and the piston 33, and can be presented in the upper, middle and lower directions. Three-point positioning, so that the axial direction is not offset when moving, so that the piston unit 3 is more smooth in operation, so as to have better damping performance, so the damper is Different from the previous innovative design, it can provide consumers with more diversified choices to enhance the purchase of gas and promote the development of the industry, so it can achieve the purpose of this new type.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

2‧‧‧External tube unit

21‧‧‧External management

22‧‧‧Containing space

221‧‧‧ lower end

222‧‧‧ upper end

223‧‧Intermediary Department

224‧‧‧Liquid zone

225‧‧‧ gas zone

226‧‧‧First Liquid Department

227‧‧‧Second Liquid Department

3‧‧‧piston unit

31‧‧‧Flexible parts

32‧‧‧ floating seat

33‧‧‧Piston

34‧‧‧ piston rod

Claims (6)

A damper comprising: an outer tube unit, comprising an outer tube defining an axially extending receiving space, the receiving space having a lower end portion and an upper portion above the lower end portion And an intermediate portion between the lower end portion and the upper end portion; and a piston unit including an elastic member mounted in the receiving space of the outer tube and located between the upper end portion and the intermediate portion, a floating seat supported at the bottom of the elastic member and axially movable by pressure, a piston axially movably mounted in the receiving space and located below the floating seat, and a downward axial direction a piston rod inserted into the top of the outer tube and passing through the center of the floating seat and connecting the piston, the floating seat partitioning the housing space into a liquid area below the liquid and containing a liquid area above it And the piston is located in the liquid zone, and partitions the liquid zone into a first liquid portion below the bit, and a second liquid portion above the bit; the piston unit is relative to the outer tube unit In a closed Positioned between an open position in which the piston moves downwardly toward the lower end, and the floating seat moves upwardly away from the intermediate portion and presses the elastic member to accumulate elastic force, in the open position The piston moves up to the intermediate portion, and the elastic member releases the elastic force to push the floating seat downward to the intermediate portion. The damper of claim 1, wherein the floating seat of the piston unit has a hollow body for the piston rod to extend through the piston rod, a first O-ring embedded in the body of the oil seal and adjacent to the piston rod, and a second O-ring embedded in the periphery of the oil seal body and adjacent to the outer tube. The damper of claim 2, wherein the oil seal body is a ring-shaped body, and has a first ring groove recessed in an inner circumferential surface and embedded by the first O-ring, and A ring is recessed in an outer peripheral surface and a second annular groove is formed by the second O-ring. The damper according to claim 2 or 3, wherein the oil seal body is made of a non-deformable rigid material, and the first O-ring and the second O-ring are made of a deformable flexible material. to make. The damper according to claim 1, wherein the piston of the piston unit has a piston body, and a ring sleeved on a periphery of the piston body, the piston body having a recess concavely disposed on an outer peripheral surface a groove, the ring is sleeved up and down in the groove, and the ring moves downward when the piston moves upward, and the ring moves upward and closes when the piston moves downward The outer tube. The damper of claim 5, wherein the piston body further has a large diameter hole that is recessed upward from a bottom surface, and a small diameter hole that is radially outwardly communicated from the top end of the large diameter hole to the outer circumferential surface. The diameter of the large diameter hole is larger than the diameter of the small diameter hole.