TWM583003U - Pressure rod - Google Patents

Abstract

A pressure rod includes an outer tube mechanism, a partitioning mechanism, a buffering mechanism, and an adjusting mechanism. The outer tube mechanism defines a main chamber. The partitioning mechanism is hermetically fixed in the main chamber, and divides the main chamber into a buffer space and an adjustment space. The buffer mechanism is mounted in the buffer space and can be driven to compress the buffer space. The adjusting mechanism is installed in the adjusting space, and includes an adjusting piston unit having a first-class track, and a control unit that can openly close the flow path, and the adjusting piston unit divides the adjusting space into one connected by the flow channel The first zone and the second zone, the adjustment piston unit can be driven to be telescopically displaced relative to the outer pipe mechanism when the flow path is opened. Therefore, the pressure bar simultaneously has the function of buffering and adjusting the amount of expansion and contraction.

Description

Pressure bar

The present invention relates to a damping device, and more particularly to a pressure bar utilizing fluid compression characteristics.

The existing pressure bar mainly comprises an outer tube defining a chamber, a piston axially movable within the chamber, and a piston rod connected to the piston. Depending on the application, it can be divided into various forms, one of which is to fill the chamber with gas. When the piston rod is driven by an external force, the shock can be generated by the gas being compressed.

Another form of pressure bar that divides the chamber into two subspaces, the piston having a flow path that communicates with the subspaces, the pressure bar also including a drive that can be driven to open or close the flow path control unit. The chamber can be filled with a fluid medium such as a liquid or a gas. The flow channel is opened by the control unit, and the pressure of the fluid medium filled therein can be balanced after the sub-spaces are connected, so that the piston can move in the chamber to adjust the piston rod to move axially The amount of elongation. After the control unit closes the flow channel, the piston is fixed by the pressure limit of the fluid medium in the sub-spaces because the sub-spaces are not connected, so that the elongation of the piston rod is fixed, and the pressure is adjusted. The function of the rod's elongation distance. Since the structure and the working principle of the above two types of pressure bars are different, if the function of buffering the shock absorber and adjusting the length of the telescopic length is required at the same time, in the currently commercially available products, there is a lack of products having similar dual functions.

It is an object of the present invention to provide a pressure bar that overcomes at least one of the disadvantages of the prior art.

Thus, the novel pressure bar comprises an outer tube mechanism, a partitioning mechanism, a buffering mechanism, and an adjusting mechanism. The outer tube mechanism defines a main chamber. The partitioning mechanism is hermetically fixed in the main chamber, and divides the main chamber into a buffer space and an adjustment space which are not communicated with each other and are axially spaced along the outer tube mechanism. The buffering mechanism is airtightly mounted on the buffer space and protrudes outwardly from the outer tubular mechanism, and can be driven into the outer tubular mechanism to compress the buffer space; the adjusting mechanism is installed in the adjusting space, and can be opposite to the adjusting space The outer tube mechanism is axially displaced, and the adjusting mechanism comprises an axially displaceable airtightly plugged adjustment piston unit protruding outwardly from the outer tube mechanism, and is disposed in the adjusting piston unit a control unit that divides the adjustment space into a first zone adjacent to the partitioning mechanism and a second zone adjacent to an end edge of the outer tubular mechanism, and has a communication between the first zone and the second zone In the flow channel, the control unit can be driven to open the flow channel, and the adjustment piston unit can be driven to be telescopically displaced relative to the outer tube mechanism when the control unit opens the flow channel.

The utility model has the advantages that the outer tube mechanism is divided into two mutually non-intersecting spaces by the separating mechanism, so that the buffering mechanism and the adjusting mechanism can be independently operated without being disturbed and simultaneously disposed on the outer tube mechanism. The pressure bar can simultaneously have the functions of buffering shock absorber and adjusting the length of the telescopic.

Referring to Figures 1 and 2, an embodiment of the present pressure bar is adapted to be mounted between a seat cushion of a bicycle (not shown) and the vehicle body, or between the front fork and the grip of the bicycle, or mounted on the chair. The seat cushion and the tripod (not shown) are not limited to the position. The pressure bar comprises an outer tube mechanism 1, a partitioning mechanism 2, a buffering mechanism 3, and an adjusting mechanism 4.

The outer tube mechanism 1 extends axially up and down, and includes a tube wall 11 defining a main chamber 10, and two airtight units 12 respectively airtightly disposed at opposite ends of the tube wall 11. The tube wall 11 has two axially spaced and radially inwardly projecting collar portions 111. Since the person having ordinary knowledge in the technical field of the present invention has the usual knowledge of installing and designing the airtight units 12, and the airtight units 12 are not the focus of the present invention, the description is omitted here.

The partitioning mechanism 2 is hermetically plugged in the tube wall 11 and is cooperatively positioned between the two by the convex ring portions 111, and the main chambers 10 are separated from each other and along the outer tube mechanism 1 A buffer space 101 and an adjustment space 102 are axially spaced apart. The partitioning mechanism includes a partitioning block 21 attached to the inner peripheral surface of the pipe wall 11, and a ring-shaped gasket 22. The outer peripheral surface of the partition block 21 is provided with a ring groove 210 for caulking the gasket 22. The washer 22 is made of an elastic material such as rubber or silicone, and is embedded in the ring groove 210 and elastically abuts against the tube wall 11.

The buffer mechanism 3 is hermetically mounted to the buffer space 101 and is axially displaceable relative to the outer tube mechanism 1. The buffer mechanism 3 includes a buffer piston member 31 that is hermetically sealed in the buffer space 101, and a buffer that connects the buffer piston member 31 and projects the axial direction of the outer tube mechanism 1 upwardly. Rod 32. The buffer rod 32 is driven to be axially retracted into the buffer space 101 with respect to the outer tube mechanism 1, and the buffer piston member 31 is driven to compress the buffer space 101.

Referring to Figures 1, 3 and 4, the adjustment mechanism 4 is hermetically mounted to the adjustment space 102 and is axially displaceable relative to the outer tube mechanism 1. The adjusting mechanism 4 includes an adjustable piston unit 41 that is axially displaceably airtightly mounted in the adjusting space 102 and protrudes outwardly from the outer tube mechanism 1, and a control disposed in the adjusting piston unit 41. Unit 42.

The adjusting piston unit 41 has a gas-tight plug in the outer tube mechanism 1, and divides the adjusting space 102 into a first area 401 adjacent to the partitioning mechanism 2 and a second area near the end edge of the outer tube mechanism 1. A piston portion 411 of the 402, and an extension pipe portion 412 projecting downward from the piston portion 411 in the axial direction of the outer tube mechanism 1 . The extension tube portion 412 has an extension 413 extending outside the outer tube mechanism 1, an enlarged portion 414 adjacent to the piston portion 411 and having an outer diameter larger than the outer diameter of the extension portion 413, and a portion 413 and the extension portion 413 The enlarged section 414 is constrained to the shoulder section 415 of one of the airtight units 12 when axially displaced downward.

The extension tube portion 412 defines a shaft hole 416 for the control unit 42 to pass through. The shaft hole 416 has a mounting portion 417 adjacent to the piston portion 411, and an aperture smaller than the mounting portion 417 aperture and from the mounting portion 417 A guiding portion 418 outside the extension tube portion 412 is connected.

The adjustment piston unit 41 also has a flow passage 403 that communicates the first zone 401 with the second zone 402. The flow channel 403 has an axial hole 404 extending axially through the piston portion 411 and communicating with the first region 401, and a radial passage through the extension tube portion 412 to communicate the axial hole 404 and the second region Radial bore 405 of 402.

The control unit 42 can be driven to open the flow channel 403, and has an opening and closing pin 421 that is axially movably disposed in the axial hole 404 and extends downward to the enlarged portion 414, and The lever 422 is inserted through the extension tube portion 412 in an axially movable manner. The opening and closing pin 421 has a caulking portion 423 that can be plugged to close the axial hole 404, and a first portion extending downwardly from the caulking portion 423 and passing through the mounting portion 417 of the shaft hole 416. Rod 424. The lever 422 has an aperture that is received in the mounting portion 417 and has an outer diameter larger than the diameter of the guiding portion 418, and is limited to be located in the mounting portion 417 when moving downward, and a The abutting portion 425 extends downwardly through the guiding portion 418 and protrudes outwardly from the second rod portion 426 of the extending portion 413.

Referring to Figures 1, 3 and 4, the present embodiment is used in the case of being mounted on a bicycle body and a seat cushion of a bicycle. The pressure bar is mounted on the vehicle body by the extension pipe portion 412 of the adjustment mechanism 4. The cushion pad 32 is used to mount the seat cushion, and the buffer space 101 is filled with air, and the adjustment space 102 is filled with hydraulic oil 6.

When the user rides on the seat cushion, since the air filled in the buffer space 101 is compressible, the buffer rod 32 is driven to be retracted into the outer tube mechanism 1 by gravity, and the buffer piston member is interlocked. 31 compresses the air filled in the buffer space 101 downward, thereby generating a shock absorbing effect.

The piston portion 411 of the adjustment piston unit 41 is incapable of being moved by the hydraulic oil 6 filled therein because the first region 401 is not in communication with the second region 402. When the user needs to adjust the height of the seat cushion, for example, by lowering the height of the seat cushion, the second lever portion 426 of the control rod 422 is pushed upward by operating an external pulling mechanism (not shown), and the arbitrage is upwardly coupled. The first portion 424 of the opening and closing pin 421 is pushed by the abutment portion 425 to move the caulking portion 423 upwardly and open the axial hole 404, thereby opening the flow channel 403 to communicate with the first region 401 and the second region. 402. The hydraulic oil 6 filled in the adjustment space 102 is circulated in the first zone 401 and the second zone 402. Further, the adjustment piston unit 41 can be moved upward in the axial direction relative to the outer tube mechanism 1 to reduce the height of the seat cushion. When the adjustment piston unit 41 moves toward the partition mechanism 2, since the volume in the adjustment space 102 is occupied by the adjustment piston unit 41, a recovery pressure is accumulated in the adjustment space 102. After being adjusted to an appropriate height of the seat cushion, the user removes the force applied to the second rod portion 426 through the pulling mechanism. At this time, the opening and closing pin 421 is not supported by the upward pushing force of the control rod 422, and The return pressure is pushed back to the position of the axial hole 404, and the flow path 403 is closed to prevent the adjustment piston unit 41 from moving relative to the outer tube mechanism 1.

To increase the height of the seat cushion, the control lever 422 is also pushed through the pulling mechanism to keep the flow passage 403 open, so that the adjustment piston unit 41 becomes movable, and the return pressure will adjust the adjustment piston. The unit 41 is pushed outwardly, and the user can drive the pulling mechanism to remove the force applied to the second rod portion 426 when moving to an appropriate height of the seat cushion, so that the flow passage 403 is closed to allow the adjusting piston unit 41 stops the downward displacement, or until the shoulder section 415 is stopped against the airtight unit 12, the pressure bar can be brought to the longest length, and the seat cushion is adjusted to the highest position.

It should be particularly noted that the partitioning mechanism 2 is not limited to being fixed in the tube wall 11 by the convex ring portions 111, and may be fixed by welding or other subsequent means, so that the partitioning mechanism 2 can be fixed to the same. The effect of dividing the main chamber 10 into two spaces within the tube wall 11 is achieved. The adjustment space 102 can also be filled with gas, and the adjustment mechanism 4 can achieve the purpose of adjusting the telescopic length of the extension tube portion 412 by controlling the communication between the first region 401 and the second region 402.

In summary, the function of the new pressure bar is to divide the main chamber 10 into the buffer space 101 for the buffer mechanism 3 by the partition mechanism 2, and the adjustment space 102 for the adjustment mechanism 4 to be installed. Therefore, the pressure bar has both the function of buffering shock absorber and adjusting the amount of expansion and contraction, and therefore, the purpose of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧External management agency

10‧‧‧ main chamber

101‧‧‧ buffer space

102‧‧‧Adjustment space

11‧‧‧ wall

111‧‧‧ convex ring

12‧‧‧Airtight unit

2‧‧‧Separating agency

21‧‧‧Separate block

210‧‧‧ Ring groove

22‧‧‧ Washer

3‧‧‧buffering agency

31‧‧‧buffer piston parts

32‧‧‧Bumper

4‧‧‧Adjustment agency

401‧‧‧First District

402‧‧‧Second District

403‧‧‧ flow path

404‧‧‧Axial hole

405‧‧‧radial holes

41‧‧‧Adjustment piston unit

411‧‧‧Piston Department

412‧‧‧Extension tube

413‧‧‧Extension

414‧‧‧ Expanded paragraph

415‧‧‧ shoulder section

416‧‧‧ shaft hole

417‧‧‧Installation Department

418‧‧‧Guidance

42‧‧‧Control unit

421‧‧‧Opening and closing

422‧‧‧Control lever

423‧‧‧Insert Department

424‧‧‧First pole

425‧‧‧Affiliation

426‧‧‧Second pole

6‧‧‧Hydraulic oil

Other features and effects of the present invention will be apparent from the following description of the drawings, in which:  Figure 1 is a cross-sectional view of one embodiment of the present pressure bar;  Figure 2 is an incomplete cross-sectional view showing that a partitioning mechanism is fixed within an outer tubular mechanism;  Figure 3 is an incomplete cross-sectional view showing a control unit of an adjustment mechanism enclosing a first-class road; and  Figure 4 is a view similar to Figure 3 illustrating the control unit being driven to open the flow path.  

Claims (6)

A pressure rod comprising: an outer tube mechanism defining a main chamber; a partitioning mechanism fixedly secured within the main chamber and separating the main chamber from each other and axially spaced along the outer tube mechanism a buffer space and an adjustment space; a buffer mechanism is airtightly mounted on the buffer space and protrudes outwardly from the outer tube mechanism, and can be driven into the outer tube mechanism to compress the buffer space; and an adjustment a mechanism mounted in the adjustment space and axially displaceable relative to the outer tube mechanism, the adjustment mechanism comprising an axially displaceable airtight plug in the adjustment space and protruding outwardly from the outer tube mechanism for adjustment a piston unit, and a control unit disposed in the adjustment piston unit, the adjustment piston unit partitioning the adjustment space into a first zone adjacent to the partition mechanism and a second zone adjacent to an edge of the outer pipe mechanism, and having a flow path connecting the first zone and the second zone, the control unit is slidably closed to close the flow channel, and the adjustment piston unit can be driven when the control unit opens the flow channel The outer telescopic tube displacement mechanism. The pressure rod of claim 1, wherein the outer tube mechanism includes a tube wall defining the main chamber, the tube wall having two axially spaced and radially inwardly engaging to cooperate to position the partitioning mechanism The inner convex part. The pressure bar according to claim 1, wherein the buffer mechanism comprises a cushioning piston member that is hermetically sealed in the buffer space, and a coupling piston rod member is coupled and protrudes outwardly along the axial direction of the outer tubular mechanism. Out of the external management Punch. The pressure rod of claim 1, wherein the adjustment piston unit has a piston portion that is hermetically sealed in the outer tube mechanism and separates the first portion from the second portion, and a portion from the piston portion The outer tube protrudes axially outwardly from the extension tube portion of the outer tube mechanism, the flow path has an axial hole extending axially through the piston portion to communicate with the first portion, and a radial passage through the extension tube And connecting the axial hole and the radial hole of the second zone, the control unit has an opening and closing pin which is inserted into the axial hole and can openly close the axial hole, and is disposed on the extension A control rod that can be driven in the tube portion to drive the opening and closing pin to axially displace relative to the piston portion to open the axial bore. The pressure bar of claim 1, wherein the partitioning mechanism comprises a partitioning block with a fixing and fixing limit in the outer tube mechanism, the outer ring surface of the partitioning block is concavely provided with a ring groove, and the partitioning mechanism further comprises a An annular gasket is inserted into the annular groove and elastically abuts the outer tubular mechanism. The pressure bar of claim 2, wherein the partitioning mechanism comprises a partitioning block attached to the inner circumferential surface of the pipe wall and fixedly spaced between the convex ring portions, the outer annular surface of the partitioning block being recessed There is a ring groove, and the partitioning mechanism further includes a gasket that is fitted into the ring groove and elastically abuts against the pipe wall.