TWM555818U - Improved valve structure of adjustable seatpost of bike - Google Patents

Description

Bicycle adjustable seat tube body structure improvement

The present invention relates to an improved structure of a bicycle adjustable seat tube body, and more particularly to a valve body structure fixed between a lifting pipe and an inner pipe, which can balance the damping oil volume between the chambers, and is easy to assemble. A person who can reduce the cost.

The bicycle seat cushion is mainly inserted into the seat tube of the bicycle by using a vertical pipe, which can adjust the rise and fall of the seat cushion riser relative to the seat tube, thereby adjusting the height of the seat cushion to meet the height, body shape or other needs of different riders. For the purpose of comfortable riding.

The adjustable seat tube structure for the adjustable seat cushion is generally divided into four types: mechanical type, hydraulic type, gas-oil mixing type and electric control type. Among them, "mechanical type" The design of the general mechanical structure is used to switch between the inner and outer tubes to adjust or position; the "oil pressure type" is set in the seat tube riser with the inner and outer tubes that can be relatively linearly displaced, and cooperates Oil chamber, oil circuit and floating piston are arranged to maintain the adjustable or positioned state between the inner and outer tubes; the "gas-oil-pressure mixing type" relies on the oil passage to compress and stop the seat tube, and the air pressure It is responsible for the rebound of the seat tube riser; the "electric control type" uses the remote control motor to control the hydraulic valve and the gas spring, so that the seat riser can be linearly displaced relative to the seat tube to be adjustable or positioned. Switcher.

The "adjustable seat tube" disclosed in the Japanese Patent No. 099221791, which comprises an outer tube and an inner tube, a tube head and an adjustment group, wherein: the inner tube system is axially displaceable relative to the outer tube and one end is disposed inside the outer tube; the seat tube head is assembled at one end of the inner tube exposed to the outer tube; The adjustment group is disposed on the seat tube head and the inner tube. The adjustment group includes a flow channel, a built-in tube fixed to the seat tube head and extending at one end to the inner tube, a shaft rod disposed on the inner tube, and a solid rod a fixing seat disposed at the end of the inner tube and located in the inner tube, a floating piston having an outer diameter of the inner tube and being vertically displaceable relative to the fixed seat, a set of gas valve members disposed on the seat tube head, and a pivoting member The tube head is connected with the handle of the shaft; the inner tube is separated from the fixed seat by a pair of oil chambers, and the end of the inner tube is separated from the fixed seat by a main oil chamber, and the flow channel is connected to the main oil. a chamber and a sub-oil chamber, wherein the flow passage is disposed in the inner tube, the inner tube and the fixed seat, and the floating piston and the seat tube head are separated by an air chamber; accordingly, the shaft is driven by the handle to open or close the flow passage, so that The damping oil can be pushed through the flow passage to the displacement of the floating piston relative to the fixed seat. While changing the main chamber and the sub-oil chamber both damping fuel oil, gas and compressed air chamber.

In the above-mentioned structure, the inner tube can be displaced up and down with respect to the outer tube, the inner tube extends inside the inner tube, and the shaft is inserted through the inner tube, and the inner tube is provided with a fixing seat in the inner tube. The outer diameter sleeve of the tube is provided with a floating piston, and the floating piston is vertically displaceable relative to the fixed seat. The end of the inner tube is spaced apart from the fixed seat by a main oil chamber, and the inner tube is separated from the fixed seat by a sub-oil chamber at the main oil. There is a flow passage between the chamber and the auxiliary oil chamber, and a floating chamber is arranged between the floating piston and the seat tube head. When the handle drives the shaft to open or close the flow passage, the damping oil can be pushed through the flow passage to the displacement of the floating piston relative to the fixed seat. At the same time, the damping oil amount of both the main oil chamber and the auxiliary oil chamber can be changed, and the gas in the compressed gas chamber can be compressed, and the lifting and lowering effect of the seat cushion can be achieved.

However, the gas-oil pressure mixing type adjustable seat tube structure design needs to be controlled in oil quantity. Very precise, and because of the complete barrier to oil and gas design, the floating piston needs to have a precise inner diameter and outer diameter size to match, which makes the cost high. Without the above-mentioned cooperation, it is easy to cause oil and gas mixing, and affect the seat tube lifting. The accuracy of the height adjustment, the overall structure does need to be improved.

The present invention provides a bicycle adjustable seat tube valve body structure improvement, which comprises: an outer tube, one end of which is set on a bicycle frame; a lifting tube, one end of which is disposed inside the outer tube, and the lifting tube The upper and lower sides of the outer tube are axially displaced upwardly, and the lifting tube is provided with a tube head at one end of the outer tube to set up a pad; a lifting and adjusting unit comprises an inner tube and a shaft, and the inner tube is disposed on the lifting Inside the tube, one end of the inner tube is fixed to the seat tube head, and a positioning portion is disposed at a predetermined position between the inner tube and the lifting tube, and at least one side hole is provided at a predetermined position of the end of the inner tube, the inner tube a fixing seat is formed at the end, a first chamber is formed between the inner tube and the fixing seat, and a second chamber is spaced between the lifting tube and the fixing seat and the inner tube, and the shaft is disposed in the inner tube, and the shaft is disposed a shaft is disposed at an end of the inner tube, and a piston is disposed at the inner end of the inner tube. The other end of the shaft is fixed inside the outer tube, wherein each of the first chamber and the second chamber is filled with a damping oil body; In the shape of a ring seat, the valve body sleeve is set at the positioning portion, and the valve body is There is a third chamber between the downcomers, wherein the third chamber is provided with a damping oil body and a gas; by the above member, when the user manipulates the lifting and adjusting unit to move the lifting tube up and down, by changing two The damping oil volume between the chambers and the gas in the compression chamber can be adjusted to suit the shock absorber effect of the rider and the riding road condition, and since the valve body is a soft rubber material, the lifting tube and the inner tube are matched. The inner and outer diameters have low precision requirements, are easy to set up and can effectively reduce costs, and have high durability, and are excellent in innovation and convenience.

The bicycle adjustable seat tube body structure of the present invention is improved, and the lifting tube is attached to the lifting tube A valve body is fixed between the inner tube and the inner tube. The valve body has the flange disposed in the damping oil body. When the user controls the lifting and adjusting unit to displace the lifting tube up and down, the first chamber is changed. The two chambers both dampen the amount of oil and compress the gas in the third chamber, and can adjust the shock absorber effect suitable for the rider and the riding condition. Since the valve body is a soft rubber material, the lifting is coordinated. The inner and outer diameters of the inner and outer tubes have low precision requirements, are easy to set up and can effectively reduce the cost, and have high durability, which is excellent in practicality and convenience; the valve body is in the shape of a ring and its outer diameter is ring-shaped. The flange is disposed, and the inner tube is provided with a first positioning portion having a groove, so that the valve body sleeve is disposed at the groove of the first positioning portion, and the flange abuts against the inner diameter of the lifting tube, and may also be The valve body inner ring is provided with a flange, and the inner diameter of the lifting pipe is provided with a second positioning portion having a groove, so that the valve body sleeve is disposed at the groove of the second positioning portion, and the flange abuts against The outer diameter of the inner tube, by the combination of the valve bodies, can also provide the effect of balancing the amount of oil in each of the chambers; The valve body is arranged to balance the damping oil amount of each of the second chamber and the third chamber. If the vehicle is dumped, the oil and gas will not be mixed, so that the height of the seat cushion is adjusted to a high degree of precision. Preferably, the controllability and the adjustment accuracy are arranged; the inner and outer diameters of the valve body are respectively arranged with a plurality of slots, and the first flow channel and the second flow channel are respectively arranged in the axial direction of the valve body, above the first flow channel Radially penetrating the valve body, and penetrating through the valve body and forming a first hole, the second flow passage is radially penetrated through the valve body, and the second flow passage passes above the valve body and forms a second hole, so that the valve body The first chamber is changed at the preset position of the inner tube. When the user manipulates the lifting and adjusting unit to move the lifting tube up and down, the first chamber is changed by the flow of the damping oil body in each of the first flow path and the second flow path. The second chamber can both dampen the amount of oil and compress the gas in the third chamber. The combination of the valve body can also provide the effect of balancing the amount of oil in each chamber.

10‧‧‧External management

20‧‧‧ Lifting tube

21‧‧‧ seat head

22‧‧‧Second Positioning Department

23‧‧‧ Groove

24‧‧‧ Third Positioning Department

25‧‧‧ Groove

251‧‧‧ Groove

26‧‧‧C-shaped buckle

30‧‧‧ Lifting adjustment unit

31‧‧‧Inside

32‧‧‧First Positioning Department

33‧‧‧ Groove

34‧‧‧ side holes

35‧‧‧ fixed seat

36‧‧‧First room

37‧‧‧Second room

38‧‧‧ shaft

39‧‧‧Piston

40‧‧‧ valve body

41‧‧‧Flange

42‧‧‧ third room

50‧‧‧ valve body

51‧‧‧Flange

60‧‧‧ valve body

61‧‧‧first slot

62‧‧‧second trough

63‧‧‧ third slot

64‧‧‧fourth slot

65‧‧‧Washers

66‧‧‧First runner

661‧‧‧ first hole

67‧‧‧Second runner

671‧‧‧ second hole

672‧‧‧ third hole

68‧‧‧ring

681‧‧‧ring

69‧‧‧ Third Runner

691‧‧‧ third hole

692‧‧‧ sphere

693‧‧‧Flexible parts

70‧‧‧Block

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is an exploded perspective view of a preferred embodiment of the present invention.

The third figure is a combined cross-sectional view of a preferred embodiment of the present invention.

The fourth figure is a schematic diagram 1 of the action of a preferred embodiment of the present invention.

The fifth figure is a schematic diagram 2 of the action of a preferred embodiment of the present invention.

The sixth drawing is an exploded perspective view of the second embodiment of the creation.

Figure 7 is a cross-sectional view of the combination of the second embodiment of the creation.

The eighth figure is an exploded perspective view of the third embodiment of the creation.

The ninth drawing is a partial exploded perspective view of the third embodiment of the creation.

The tenth figure is a schematic diagram 1 of the action of the third embodiment of the present creation.

The eleventh figure is a schematic diagram 2 of the action of the third embodiment of the present invention.

Fig. 12 is a partially exploded perspective view showing the fourth embodiment of the creation.

Figure 13 is a sectional view showing the combination of the fourth embodiment of the present invention.

The fourteenth figure is a schematic diagram 1 of the action of the fourth embodiment of the present invention.

The fifteenth figure is a schematic diagram 2 of the action of the fourth embodiment of the present invention.

Fig. 16 is a partially exploded perspective view showing the fifth embodiment of the creation.

Figure 17 is a sectional view showing the combination of the fifth embodiment of the creation.

The eighteenth figure is a schematic diagram 1 of the action of the fifth embodiment of the present invention.

The nineteenth figure is a second schematic diagram of the action of the fifth embodiment of the present invention.

First, please refer to the first to fifth figures. The bicycle adjustable seat tube body structure improved by the present invention mainly includes: an outer tube 10, an inner tube 20, a lifting adjustment unit 30, and a valve body. 40.

The outer tube 10 has one end assembled on the bicycle frame.

The lifting pipe 20 has one end disposed inside the outer pipe 10, and the lifting pipe 20 is axially displaceable relative to the outer pipe 10. The lifting pipe 20 is provided with a pipe head 21 at one end of the outer pipe 10 for A mat is set up.

The lifting and lowering adjustment unit 30 includes an inner tube 31, a shaft 38, and a piston 39. The inner tube 31 is disposed inside the lifting tube 20, and one end of the inner tube 31 is fixed in the seat tube head 21, A first positioning portion 32 is disposed on the outer diameter of the inner tube 31. The first positioning portion 32 is provided with a recess 33 in the outer diameter of the inner tube 31. The inner tube 31 has at least one predetermined position at the end. a side hole 34, a fixing seat 35 is fixed at the end of the inner tube 31, a first chamber 36 is formed between the inner tube 31 and the fixing base 35, and the lifting tube 20 is spaced apart from the fixing seat 35 and the inner tube 31. a second chamber 37; the shaft 38 is disposed inside the inner tube 31, and a shaft 39 is disposed at an end of the shaft 38 disposed inside the inner tube 31, and the other end of the shaft 38 is fixed to the outer tube 10 Internal; wherein each of the first chamber 36 and the second chamber 37 is filled with a damping oil body.

The valve body 40 has a ring shape, and a flange 41 is disposed on the outer ring of the valve body 40 so that the valve body 40 is disposed at the groove 33 of the first positioning portion 32 of the inner tube 31, and the flange 41 abuts against the lifting portion. The inner diameter of the tube 20 is such that a third chamber 42 is spaced between the valve body 40 and the riser tube 20. The third chamber 42 is provided with a damping oil body and gas, and the damping oil body is received by the earth. Under the influence of gravity, the damping oil system is located at the bottom of the third chamber 42 and the valve body 40 is accommodated between the damping oil bodies; wherein the valve body 40 is an application of the rubber material.

The lifting tube 20 and the inner tube 31 are indirectly provided with a valve body 40. The valve body 40 has a flange 41 accommodated in the damping oil body. When the user manipulates the lifting and adjusting unit 30, the lifting tube 20 is moved up and down. During the displacement, by changing the damping capacity of the first chamber 36 and the second chamber 37 and compressing the gas in the third chamber 42, the shock absorber suitable for the rider and the riding condition can be adjusted. And by the combination of the valve body 40, the damping oil amount of each of the second chamber 37 and the third chamber 42 can be balanced, the oil and gas are not mixed, and the accuracy of the seat cushion height adjustment is high, and The valve body 40 is a soft rubber material. Therefore, the precision of the inner and outer diameters of the lifting pipe 20 and the inner pipe 31 is not high, the cost can be effectively reduced, and the durability is high, so that the overall structure is extremely innovative and practical.

In order to further understand the characteristics of this creation, the use of technical means and the expected results, the use of this creation is described as follows: The creation of this creation is the first positioning of the valve body 40 in the inner tube 31 The inner tube 31 is inserted into the lifting tube 20, the flange 41 is abutted against the inner diameter of the lifting tube 20, and the lifting tube 20 is inserted into the outer tube 10, and The shaft 38 is passed through the inner tube 31, that is, the assembly is completed.

For the use of the present invention, please refer to the fourth figure. When the user manipulates the lifting and adjusting unit 30 to displace the lifting tube 20 downward, the damping oil body in the first chamber 36 flows to the second through the side hole 34. The chamber 37 pushes the fixed seat 35 relative to each other, and the damping oil body pushes the flange 41 and flows to the third chamber 42 while compressing the gas in the third chamber 42 and changing the first chamber 36. The amount of damping oil with the second chamber 37; When the lifting and lowering adjustment unit 30 moves the lifting pipe 20 upward, please refer to the fifth figure, that is, the relative movement of the fixing seat 35 is pushed, and the damping oil body in the second chamber 37 flows to the first volume through the side hole 34. a chamber 36, the third damping chamber 42 partially dampens the oil body to push the flange 41 and flows to the second chamber 37, by changing the damping capacity and compression of the first chamber 36 and the second chamber 37 The gas in the three-chamber chamber 42 can adjust the shock-absorbing effect suitable for the rider and the riding condition, and the valve body 40 can be used to balance the amount of oil in the chamber.

Please refer to the sixth embodiment, which is a second embodiment of the present invention, wherein a second positioning portion 22 is disposed at a predetermined position of the inner diameter of the lifting tube 20, and the second positioning portion 22 is attached to the lifting tube. The inner ring is provided with a recess 23, and the valve body 50 is in the shape of a ring. The inner ring of the inner ring is provided with a flange 51, so that the sleeve 50 is disposed at the recess 23 of the second positioning portion 22, and the The flange 51 abuts against the outer diameter of the inner tube 31, and the combination of the valve body 50 can also provide the effect of balancing the amount of oil in each of the chambers.

Please refer to the eighth embodiment of the present invention, which is a third embodiment of the present invention, wherein a third positioning portion 24 is disposed at a predetermined position of the outer diameter of the inner tube 31, and the third positioning portion 24 is attached. The outer ring of the tube 31 is provided with two grooves 25, 251, and the valve body 60 is in the shape of a ring seat, and the inner diameter of the tube 31 is annularly provided with a first groove 61 and a second groove 62 respectively, and the outer diameter thereof A third slot 63 and a fourth slot 64 are respectively disposed from the top to the bottom, and each of the first slot 61, the second slot 62, the third slot 63, and the fourth slot 64 is respectively provided with a washer 65. A first flow passage 66 and a second flow passage 67 are axially disposed at a predetermined position inside the valve body 60. The first flow passage 66 communicates with the first groove 61 in a radial direction, and the first flow passage 66 runs through the valve body. A first hole 661 is formed in the bottom of the 60, and the second flow channel 67 communicates with the fourth groove 64 in the radial direction, and the second flow channel 67 passes over the valve body 60 and forms a second hole 671. The valve body 60 is sleeved on the third positioning portion 24 of the inner tube 20, and a C-shaped buckle 26 is respectively disposed on each of the grooves 25 and 251 of the upper and lower portions of the valve body 60. The assembly is configured to clamp the valve body 60 to the third positioning portion 24; when the user manipulates the lifting adjustment unit 30 to displace the lifting tube 20 downward, please refer to the tenth figure to make the first chamber 36 The damping oil body flows to the second chamber 37 via the side hole 34, and pushes the fixed seat 35 to move relative to each other, and the damping oil body flows to the third chamber 42 through the first hole 661 and the first flow path 66 while compressing the The gas in the third chamber 42 changes the damping oil amount of the first chamber 36 and the second chamber 37; otherwise, when the lifting and adjusting unit 30 is manipulated to move the lifting tube 20 upward, please refer to the eleventh drawing. As shown, the relative movement of the fixing seat 35 is pushed, and the damping oil body in the second chamber 37 flows to the first chamber 36 via the side hole 34, and the damping oil body in the third chamber 42 is partially damped. The two holes 671 and the second flow path 67 flow to the second chamber 37, by changing the damping capacity of the first chamber 36 and the second chamber 37 and compressing the third volume The gas in the chamber 42 and the like, and by the combination of the valve body 60, can also provide the effect of balancing the amount of oil in each of the chambers.

Please refer to the twelfth to fifteenth drawings, which is a fourth embodiment of the present invention, wherein the inner diameter of the valve body 60 is respectively provided with a first groove 61 and a second groove 62 from top to bottom, and a third groove 63 is disposed in the upper ring of the outer diameter, and each of the first groove 61, the second groove 62 and the third groove 63 is respectively provided with a gasket 65, and the preset position of the valve body 60 is axially disposed respectively. a first channel 66 and a second channel 67, the first channel 66 communicates with the first slot 61 in a radial direction, and the first channel 66 extends below the bottom of the valve body 60 and is provided with a first hole 661, the second channel 67 is disposed above the valve body 60 and is provided with a second hole 671. The second flow path 67 extends radially outwardly through the valve body 60 and is provided with a third hole 672 at the upper and lower ends of the valve body 60. A ring recess 68, 681 is formed in each of the recesses, and a blocking piece 70 is disposed in each of the ring recesses 68, 681. The blocking piece 70 is in the shape of a ring, and the valve body 60 is sleeved on the inner tube 20. At the three positioning portions 24, a C-shaped buckle 26 is respectively sleeved on each of the grooves 25 and 251 of the valve body 60 to clamp the valve body 60 to the third positioning portion 24, and the blocking is The sheet 70 is arranged such that each of the blocking sheets 70 is respectively blocked by the first hole 661 and the second hole 671; wherein the blocking piece 70 is a rubber material application; when the user manipulates the lifting and adjusting unit 30 to make the lifting tube 20 is displaced downward, please refer to FIG. 14 to make the damping oil body in the first chamber 36 flow to the second chamber 37 via the side hole 34, and push the fixed seat 35 to move relatively, and the damping oil The body passes through the third hole 672, the second flow path 67 and the second hole 671 and pushes the blocking piece 70 to flow to the third chamber 42 while compressing the gas in the third chamber 42 and changing the first chamber 36. And the damping oil amount of the second chamber 37; conversely, when the lifting and adjusting unit 30 is manipulated to move the lifting tube 20 upward, please refer to the fifteenth figure, Pushing the fixed seat 35 relative to the movement, and the damping oil body in the second chamber 37 flows to the first chamber 36 via the side hole 34, and a portion of the damping oil body in the third chamber 42 passes through the first flow passage 66 and The first hole 661 pushes the blocking piece 70 to the second chamber 37, and by changing the damping capacity of the first chamber 36 and the second chamber 37, and compressing the gas in the third chamber 42, Moreover, by the combination of the valve body 60, it is also possible to provide an effect of balancing the amount of oil in each of the chambers.

Please refer to the figures of the sixteenth to nineteenth drawings, which are the fifth embodiment of the present invention, wherein the inner diameter of the valve body 60 is respectively provided with a first groove 61 and a second groove 62 from top to bottom, and a third groove 63 is disposed in the upper ring of the outer diameter, and each of the first groove 61, the second groove 62 and the third groove 63 is respectively provided with a gasket 65, and the preset position of the valve body 60 is axially disposed respectively. First class The first flow passage 66 communicates with the first groove 61 in the radial direction, and the first flow passage 66 penetrates the bottom of the valve body 60 and is provided with a first hole 661. The second flow passage 67 is provided. The upper portion penetrates the valve body 60 and is provided with a second hole 671. The second flow path 67 is axially disposed with a larger diameter and a third flow path 69 penetrating through the valve body 60. The third flow path is radially disposed. There is a third hole 691 extending through the outer diameter of the valve body 60. A ball 692 and an elastic member 693 are sequentially disposed in the third flow path 69, and a fixing member 694 is disposed at the bottom of the elastic member 693 to position the same. The ball 69 and the elastic member 693 are prevented from coming out of the third flow path 69. The elastic member 693 elastically resists the ball 692 to block the second flow path 67, so that the damping oil body of the second chamber 37 can be prevented from passing through the third hole 691. And the third flow passage 69 flows to the third chamber 42 so that the valve body 60 is sleeved at the third positioning portion 24 of the inner tube 20, and the grooves 25 and 251 are respectively disposed above and below the valve body 60. A C-shaped buckle 26 is provided to clamp the valve body 60 to the third positioning portion 24; when the user manipulates the lifting and adjusting unit 30 to displace the lifting tube 20 downward, please refer to FIG. The damping oil body in the first chamber 36 is caused to flow to the second chamber 37 via the side hole 34, and the fixed seat 35 is pushed to move relative to each other, and the damping oil body flows through the first hole 661 and the first flow path 66 to the first The three-chamber chamber 42 simultaneously compresses the gas in the third chamber 42 and changes the amount of damping oil of the first chamber 36 and the second chamber 37; otherwise, when the lifting and adjusting unit 30 is manipulated, the lift tube 20 is displaced upward Referring to FIG. 19, the relative movement of the fixing base 35 is pushed, and the damping oil body in the second chamber 37 flows to the first chamber 36 via the side hole 34, and the third chamber The inner damping oil body 42 pushes the ball 692 through the second hole 671 and the second flow path 67 and compresses the elastic member 693, and flows to the second chamber 37 via the third flow path 69 and the third hole 691, by changing the The first chamber 36 and the second chamber 37 both dampen the amount of oil and compress the gas in the third chamber 42. Moreover, by the combination of the valve body 60, it is also possible to provide an effect of balancing the amount of oil in each of the chambers.

The bicycle adjustable seat tube body structure of the present invention is improved, and a valve body 40 is fixed between the lifting pipe 20 and the inner pipe 31. The valve body 40 has a flange 41 accommodated in the damping oil body, when used When the lifting and lowering adjustment unit 30 is operated to vertically displace the lifting pipe 20, the amount of damping oil and the gas in the third chamber 42 can be adjusted by changing the damping capacity of the first chamber 36 and the second chamber 37. The shock absorber effect is suitable for the rider and the riding condition, and since the valve body 40 is a soft rubber material, the precision of the inner and outer diameters of the lifting pipe 20 and the inner pipe 31 is not high, and the assembly is easy and effective. The utility model has the advantages of low cost and high durability, and is excellent in practicality and convenience. Further, the valve body 40 has a ring shape, the outer diameter ring is provided with the flange 41, and the inner tube 31 is provided with The first positioning portion 33 of the groove 33 is disposed at the groove 33 of the first positioning portion 32, and the flange 41 abuts against the inner diameter of the lifting tube 20, and the valve body 50 can also be disposed. The inner ring is provided with a flange 51, and the inner diameter of the lifting pipe 20 is provided with a second positioning portion 22 having a groove 23, so that the valve body 50 is set at the first position. The positioning portion 22 is at the groove 23, and the flange 51 abuts against the outer diameter of the inner tube 31. By the combination of the valve bodies 40 and 50, the effect of balancing the amount of oil in each of the chambers can also be provided.

By the combination of the valve body 40, the damping oil amount of each of the second chamber 37 and the third chamber 42 can be balanced. If the vehicle is dumped, the oil and gas will not be mixed, so that the height of the seat cushion is adjusted with high precision. It is an excellent controllability and adjustment accuracy.

The valve body 60 may be respectively provided with a plurality of grooves on the inner and outer diameters of the valve body 60, and the first flow channel 66 and the second flow channel 67 are respectively disposed in the axial direction of the valve body 60, and the valve body is radially penetrated through the valve body. 60, and a valve body is formed below and a first hole 661 is formed. The second flow channel 67 extends radially through the valve body 60, and the second flow channel 67 passes over the valve body 60 and forms. a second hole 671, the valve body 60 is sleeved at a predetermined position of the inner tube 20, and when the user controls the lifting and adjusting unit 30 to move the lifting tube 20 up and down, the damping oil body is matched with each of the first flow paths 66 and The flow of the second flow path 67 changes the damping oil amount of the first chamber 36 and the second chamber 37 and compresses the gas in the third chamber 42 by the valve body 60. It can provide the effect of balancing the amount of oil in each compartment.

In summary, the "bike adjustable seat tube valve body structure improvement" disclosed in the present invention provides an adjustable seat tube structure with a valve body 40, and a valve body between the lift pipe 20 and the inner tube 31. 40, the valve body 40 has a flange 41 accommodated in the damping oil body, when the user manipulates the lifting and adjusting unit 30 to displace the lifting pipe 20 up and down, by changing the amount of damping oil between the two chambers and compressing the chamber In the manner of gas or the like, the shock absorber effect suitable for the rider and the riding road condition can be adjusted, and since the valve body 40 is a soft rubber material, the precision of the inner and outer diameters of the lifting pipe 20 and the inner pipe 31 is not high. It is easy to set up and can effectively reduce costs, and has high durability. It makes the whole industry practical and innovative, and its structure has not been seen in books or public use. It is in line with the requirements of new patent applications. As soon as the patent is granted, it is a prayer.

To be clear, the above is the specific embodiment of the creation and the technical principles applied. If the changes made according to the concept of this creation, the functional role produced by it does not exceed the spirit of the manual and the drawings. At the time, it should be combined with Chen Ming within the scope of this creation.

10‧‧‧External management

20‧‧‧ Lifting tube

21‧‧‧ seat head

30‧‧‧ Lifting adjustment unit

31‧‧‧Inside

32‧‧‧First Positioning Department

33‧‧‧ Groove

40‧‧‧ valve body

41‧‧‧Flange

Claims (8)

The bicycle adjustable seat tube body structure is improved, comprising: an outer tube, one end of which is set on the bicycle frame; a lifting tube, one end of which is disposed inside the outer tube, and the lifting tube can be relatively external The tube is vertically displaced, and the lifting tube is provided with a tube head at one end of the outer tube to set up a pad; a lifting and adjusting unit comprises an inner tube and a shaft, and the inner tube is disposed inside the lifting tube. And one end of the inner tube is fixed to the seat tube head, and a positioning portion is disposed at a predetermined position between the inner tube and the lifting tube, and at least one side hole is disposed at a predetermined position of the end of the inner tube, and the end of the inner tube is fixed a fixing seat is formed, a first chamber is formed between the inner tube and the fixing seat, and a second chamber is spaced between the lifting tube and the fixing seat and the inner tube, the shaft is inserted through the inner tube, and the shaft is arranged a piston is disposed at an inner end of the inner tube, and the other end of the shaft is fixed inside the outer tube, wherein each of the first chamber and the second chamber is filled with a damping oil body; and a valve body is a ring seat Shape, the valve body sleeve is set at the positioning portion, and between the valve body and the lifting tube A third spacer chamber, the third chamber is provided with damping oil content thereof and by gas. According to the first aspect of the invention, the bicycle adjustable seat tube body structure is improved, wherein the inner tube outer diameter is preset with a first positioning portion, and the first positioning portion is provided with a concave portion on the inner tube outer diameter ring. The groove body has a ring shape and a flange is disposed on the outer diameter ring thereof, so that the valve body sleeve is disposed at the groove of the first positioning portion of the inner tube, and the flange abuts against the inner diameter of the lifting tube. According to the scope of claim 1, the bicycle adjustable seat tube body structure is improved, wherein the valve body is an application of a rubber material. According to the first aspect of the patent application, the bicycle adjustable seat tube body structure is improved, wherein a second positioning portion is disposed at a predetermined position of the inner diameter of the lifting tube, and the second positioning portion is disposed on the inner diameter ring of the lifting tube. a groove, the valve body is in the shape of a ring and a ring is formed on the inner ring of the valve body, so that the valve body sleeve The setting is located at the groove of the second positioning portion, and the flange abuts against the outer diameter of the inner tube. According to the first aspect of the patent application, the bicycle adjustable seat tube body structure is improved, wherein a third positioning portion is disposed at a predetermined position of the outer diameter of the inner tube, and the third positioning portion is disposed on the inner tube outer diameter ring. a second groove, the valve body is in the shape of a ring seat and has a first groove and a second groove respectively from the top to the bottom, and the outer diameter of the ring is respectively provided with a third groove and a fourth ring from the top to the bottom. a slot is disposed in each of the first slot, the second slot, the third slot, and the fourth slot, and a first flow path and a second flow path are respectively axially disposed at predetermined positions inside the valve body. The first flow channel communicates with the first groove in a radial direction, and the first flow channel passes through the bottom of the valve body and forms a first hole. The second flow channel communicates with the fourth groove radially downward, and the second flow channel The upper part penetrates the valve body and forms a second hole, so that the valve body is sleeved on the third positioning portion of the inner tube, and a C-shaped buckle is respectively sleeved on the upper and lower sides of the valve body to be clamped Positioning the valve body at the third positioning portion. According to the first aspect of the patent application, the bicycle adjustable seat tube body structure is improved, wherein a third positioning portion is disposed at a predetermined position of the outer diameter of the inner tube, and the third positioning portion is disposed on the inner tube outer diameter ring. The second groove has a first groove and a second groove respectively from the top to the bottom, and a third groove is arranged on the outer ring of the outer diameter, and the first groove, the second groove and the third groove are respectively A first gasket is disposed in the inner portion of the valve body, and a first flow passage and a second flow passage are respectively disposed at a predetermined position inside the valve body. The first flow passage is vertically connected to the first groove, and the first flow passage is penetrated under the first flow passage. a second hole is disposed at the bottom of the valve body, and the second flow passage is disposed above the valve body and is provided with a second hole. The second flow passage is radially penetrated through the valve body and is provided with a third hole. The upper and lower ends are respectively recessed and formed with a ring recess, and each of the ring recesses is respectively provided with a blocking piece, and the blocking piece is in the form of a ring piece, so that the valve body is sleeved at the third positioning part of the inner tube, a C-shaped buckle is respectively sleeved on each of the upper and lower grooves of the valve body to clamp the valve body to the first The positioning portion. According to the sixth aspect of the patent application, the bicycle adjustable seat tube body structure is improved, wherein the barrier piece is a rubber material user. According to the first aspect of the patent application, the bicycle adjustable seat tube body structure is improved, wherein a third positioning portion is disposed at a predetermined position of the outer diameter of the inner tube, and the third positioning portion is disposed on the inner tube outer diameter ring. The second groove has a first groove and a second groove respectively from the top to the bottom, and a third groove is arranged on the outer ring of the outer diameter, and the first groove, the second groove and the third groove are respectively A first gasket is disposed in the inner portion of the valve body, and a first flow passage and a second flow passage are respectively disposed at a predetermined position inside the valve body. The first flow passage is vertically connected to the first groove, and the first flow passage is penetrated under the first flow passage. a second hole is disposed at the bottom of the valve body, and the second flow passage is disposed above the valve body and is provided with a second hole. The second flow passage is axially disposed with a larger diameter and a third flow passage through the valve body. And the third flow channel is provided with a third hole extending through the outer diameter of the valve body, and a ball body and an elastic member are sequentially disposed in the third flow channel, and the ball body abuts the second flow channel And a fixing member is disposed on the bottom of the elastic member to position the ball and the elastic member in the third flow path, The valve body is sleeved on the third positioning portion of the inner tube, and a C-shaped buckle is respectively sleeved on the upper and lower sides of the valve body to clamp the valve body to the third positioning portion.