TWI572792B - Pressure bar barrier structure - Google Patents

Description

Pneumatic bar resistance structure

The invention relates to a gas pressure rod, in particular to a gas pressure rod which is used as a buffering and adjusting height.

The gas pressure bar is mainly used to change the state of the gas during the compression process in the cylinder tube, and can be widely applied to appliances requiring high and low adjustment, such as, but not limited to, a chair.

Referring to Figures 7 and 7A, the prior art gas pressure bar includes a sleeve (5) having a hollow chamber (50); and axially extending through the first end of the sleeve (5). a telescopic rod (6) inside and outside the wall (51), the telescopic rod (6) is close to the inner edge of the sleeve (5) by a piston member (61); and the tube wall of the sleeve (5) is respectively The hollow chamber (50) communicates with an inlet (501) and an outlet (502), and the casing (5) is provided with an air passage (503) communicating with the inlet (501) and the outlet (502). .

And the sleeve (5) is opposite to the second end wall (52) of the first end wall (51), and a pressing member (71) is disposed, and the pressing member (71) is axially inwardly spaced apart from the pressing member (71). a valve plug (72) (the seventh figure shows a press contact state), the middle portion of the valve plug (72) is provided with a narrow neck section (721) for facilitating gas circulation, the valve The bolt (72) is disposed through a hole (504) fixed to the fixing seat (505) in the sleeve (5), and the outlet (502) communicates with the hole (504), the pressing member (71) The valve plug (72) is operatively pressed to raise and lower to open and close the opening (504) to open and close the outlet (502); however, as can be seen from the seventh aspect, the prior art air passage (503) is The exit (502) is outside the path of the tunnel (504), and there is also a direction toward the second end wall (52). The flow, even along the inner wall surface of the casing (5), is escaping from the outer edge of the pressing member (71), and the gas bar loses its function when deflated, so the prior art is in the casing (5) The rubber seat of the fixing seat (505) is filled with a rubber gasket (506). However, the fixing seat (505) needs to provide a fixing function, so the material is relatively rigid, and the leakage preventing gasket (501) ), rubber is used, the two materials will inevitably produce "gap", and the venting gasket (506) may gradually lose its resistance due to aging and frequent wear of the material, and the components are relatively cumbersome, so it is not ideal.

In view of the prior art, the inventors believe that there should be an improved configuration for which a gas pressure bar venting configuration is provided, comprising a sleeve having a hollow chamber; and axially extending through the first end wall of the sleeve. a telescopic rod, the telescopic rod is close to the inner edge of the sleeve by a piston member; and the sleeve tube wall is respectively provided with an inlet and an outlet communicating with the hollow chamber, and the sleeve tube wall is provided with a The inlet and the outlet are all connected to the air passage; and the sleeve is opposite to the second end wall of the first end wall, and a pressing member is disposed, and a valve plug is disposed axially inwardly from the pressing member, the valve plug Passing through a hole fixed in the fixing seat of the sleeve, and the outlet is in communication with the hole, the pressing member is operatively pressed and restored to open and close the hole to open and close the outlet; wherein the sleeve a first blocking block is disposed between the fixing seat and the second end wall, and the first blocking block integrally extends a liner between the tube walls of the sleeve to make the sleeve tube The wall boundary is divided into an outer tube and an inner tube, the air channel is located between the inner tube and the liner, and the fixing seat is oriented Inner tube end wall of the second end wall.

Due to the design of the present invention, when the air flow is directed from the inlet along the air passage toward the second end wall, and to the direction of the outlet, due to the first block and the liner The structure is integrally extended and enclosed on the outer side of the airflow, and the structure is simple, and there is no so-called "gap" to form a better venting effect.

(1)‧‧‧ casing

(1A)‧‧‧External management

(1B) ‧ ‧ inner management

(1C)‧‧‧ liner

(10) ‧‧‧ hollow room

(101)‧‧‧ Import

(102)‧‧‧Export

(103)‧‧‧ Airway

(104) ‧‧‧ Hole

(105)‧‧‧ Fixed seat

(11) ‧‧‧First end wall

(111)‧‧‧First mat

(112)‧‧‧Second blocking block

(112A) ‧ ‧ Peaks

(112B) ‧ ‧ peak

(113)‧‧‧Second mat

(114)‧‧‧ ring mat

(12)‧‧‧Second end wall

(2) ‧‧‧ Telescopic rod

(21)‧‧‧ piston parts

(31)‧‧‧Pressing parts

(32)‧‧‧ valve plug

(321)‧‧‧ neck section

(4) ‧‧‧first block

(5) ‧‧‧ casing

(50) ‧‧‧ hollow room

(501)‧‧‧ Import

(502)‧‧‧Export

(503) ‧ ‧ airways

(504) ‧‧‧ Holes

(505)‧‧‧ Fixed seat

(506)‧‧‧Resistance washers

(51)‧‧‧First end wall

(52) ‧‧‧second end wall

(6) ‧‧‧ Telescopic rod

(61)‧‧‧ piston parts

(71)‧‧‧Pressing parts

(72) ‧‧‧ valve plug

(721)‧‧‧ neck section

The first figure is an exploded view of the present invention

The second figure shows a perspective view of the first end wall forming of the present invention.

The third figure is a sectional view of the combination of the present invention

The third A picture is a partial enlarged view of the third part of the third picture

The third B picture is a partial enlarged view of the third part B

The fourth figure is a schematic diagram of the effect of the present invention

The fifth figure is another effect diagram of the present invention.

The sixth figure shows another effect diagram of the present invention with two convex peaks

Figure 7 is a cross-sectional view of a prior art plane

The seventh A picture is a partial enlarged view of the seventh part of the seventh picture

The technical content, features and embodiments of the present invention will be described below with the aid of the drawings, so that you can have a better understanding of the case.

Referring to the third figure, in conjunction with the first figure, the present invention relates to a gas pressure bar damming structure comprising: a sleeve (1) having a hollow chamber (10); and axially extending through the sleeve (1) a telescopic rod (2) inside and outside the first end wall (11), the telescopic rod (2) is close to the inner edge of the sleeve (1) by a piston member (21); In order to express the three-dimensional decomposition, the first end wall has not been bent, please refer to the second figure to form the first end wall.

And the casing (1) pipe wall is respectively provided with an inlet (101) and the hollow chamber (10) An outlet (102), and the tube (1) tube wall is provided with an air passage (103) communicating with the inlet (101) and the outlet (102); and the sleeve (1) is opposite to the first end wall (11) one of the second end walls (12) is provided with a pressing member (31), and a valve plug (32) is axially spaced inwardly from the pressing member (31), and the middle portion of the valve plug (32) is provided There is a narrow neck section (321) for facilitating gas circulation, and the valve plug (32) is disposed through a fixing seat (105) fixed in the sleeve (1). a channel (104), and the outlet (102) communicates with the channel (104), the pressing member (31) operatively presses and recovers to open and close the channel (104) to open and close the outlet (102) This part is a general technique and does not describe other detailed structures and actuation states.

In the present invention, in particular, a first blocking block (4) is filled between the fixing seat (105) and the second end wall (12) in the sleeve (1), and the first blocking block (4) The axially extending a liner (1C) is disposed between the tube walls of the sleeve (1) such that the tube wall boundary of the sleeve (1) is divided into an outer tube (1A) and an inner tube (1B). The air passage (103) is located between the inner tube (1B) and the liner (1C), and the fixing seat (105) is an end wall of the inner tube (1B) facing the second end wall (12).

Please cooperate with the third figure and the third A and fourth figures, because the first seat (105) and the second end wall (12) in the sleeve (1) of the present invention are filled with a first a blocking block (4), the first blocking block (4) integrally extending a liner (1C) axially between the tube walls of the sleeve (1) to define the tube wall boundary of the sleeve (1) An outer tube (1A) and an inner tube (1B), the air passage (103) is located between the inner tube (1B) and the liner (1C), and the fixing seat (105) faces the second end wall (12) Inner tube (1B) end wall. Therefore, when the air flow is directed from the inlet (101) along the air passage (103) toward the second end wall (12), and to the direction of the outlet (102), the first blocking block (4) and the The liner (1C) is integrally enclosed on the outer side of the airflow, and a simple structure can form a "blocking and deflation" retaining wall.

One of the preferred embodiments of the present invention, wherein the first blocking block (4) and the integral extension The liner (1C) is made of a plastic material to facilitate forming and is not susceptible to deterioration.

Please refer to the third figure and the third figure B and the fifth figure. One of the preferred embodiments of the present invention provides a first pad body (111) on the inner side of the first end wall (11) for enhancing the barrier effect. The inside of the pad body (111) is provided with a second blocking block (112) made of one of plastic, rubber and silicone materials, and as shown in the fifth figure, the second blocking block The top edge of (112) is a convex peak portion (112A), or a convex peak portion (112B) is added to the top edge as shown in the sixth figure, and the inner side of the second blocking block (112) (in the legendary top edge) Above) a second pad (113) is provided. Since the second stagnation block (112) is made of a plastic, rubber or silicone material, and the convex portion (112A) or the two convex peak portions (112A) and (112B) are pressed when pressed, The deformation amount of the extension is generated, and the material is soft and easy to be deformed. Therefore, when the air balance pressure in the upper and lower axial directions and the pressure of the first end wall (11) are mutually opposite and opposite, the second leakage is performed. The block (112) is easily deformed in the radial direction by the amount of deformation (the excess is generated due to the flattening), and can be closely attached to the outer tube (1A), and the telescopic rod can also be attached (2). ) fits to form a barrier. In addition, the second pad body (113) has a ring pad (114) embedded in the axial direction on the inner side to further increase the function of preventing deflation.

In summary, the present invention is indeed in line with industrial utilization, and is not found in publications or publicly used before application, nor is it known to the public, and has non-obvious knowledge, conforms to patentable requirements, and patents are filed according to law. . However, the above description is a preferred embodiment of the industry of the present invention, and all the equivalent changes made by the scope of the patent application of the present invention are within the scope of the claim.

(1)‧‧‧ casing

(1A)‧‧‧External management

(1B) ‧ ‧ inner management

(1C)‧‧‧ liner

(101)‧‧‧ Import

(102)‧‧‧Export

(103)‧‧‧ Airway

(104) ‧‧‧ Hole

(105)‧‧‧ Fixed seat

(111)‧‧‧First mat

(112)‧‧‧Second blocking block

(113)‧‧‧Second mat

(114)‧‧‧ ring mat

(12)‧‧‧Second end wall

(2) ‧‧‧ Telescopic rod

(21)‧‧‧ piston parts

(31)‧‧‧Pressing parts

(32)‧‧‧ valve plug

(321)‧‧‧ neck section

(4) ‧‧‧first block

Claims (6)

The utility model relates to a gas pressure bar venting structure, comprising: a sleeve having a hollow chamber; and a telescopic rod extending axially inside and outside the first end wall of the sleeve, the telescopic rod being close to the sleeve by a piston member The casing wall is respectively provided with an inlet and an outlet communicating with the hollow chamber, and the casing wall is provided with an air passage communicating with the inlet and the outlet; and the sleeve is opposite to the first a second end wall of the end wall is provided with a pressing member, and a valve plug is disposed axially inwardly from the pressing member, and the valve plug is disposed in a hole fixed in the fixing seat in the sleeve, and The outlet is in communication with the tunnel, and the pressing member is operatively pressed and restored to open and close the opening to open and close the outlet; wherein a first space is filled between the fixing seat and the second end wall in the sleeve a blocking block, the first blocking block has an axial integral extending between the tube wall of the sleeve, and the casing wall is divided into an outer tube and an inner tube by the liner, the air channel is located The inner tube is interposed between the inner tube and the inner tube end wall facing the second end wall. The gas pressure bar venting structure according to claim 1, wherein the first damming block and the liner extending integrally are made of plastic material. The gas pressure bar venting structure according to claim 1, wherein the inner tube is made of a plastic material. The gas pressure bar venting structure according to claim 1, wherein a first pad body is disposed inside the first end wall, and a inner side of the pad body is made of one of plastic, rubber and silicone materials. The second blocking block has a second pad body disposed on the inner side of the second blocking block. The gas pressure bar venting structure according to claim 4, wherein the second cushion body A ring pad is embedded in the axial direction. The gas pressure bar venting structure according to claim 4, wherein a top edge of the second damming block is provided with a convex peak.