TW201925640A - Air pressure balancing apparatus of bicycle shock absorber including an outer tube, an inner tube, a core rod, a floating seat, a sleeve and a balancing valve, and capable of rapidly achieving an air pressure balance of two air chambers - Google Patents

Abstract

This invention relates to an air pressure balancing apparatus of a bicycle shock absorber, which includes an outer tube, an inner tube, a core rod, a floating seat, a sleeve and a balancing valve, wherein the floating seat respectively divides the inner tube into a first air chamber and a second air chamber between an inflating valve and a penetrating seat, and the sleeve usually pushes the balancing value of the floating seat, so that the balancing valve opens for communicating the first air chamber and the second air chamber. As such, an air pressure balance of the two air chambers may be rapidly achieved.

Description

Bicycle shock absorber pressure balance device

The invention relates to a shock absorber for a bicycle, in particular to a pneumatic shock absorber having two air chambers having mutual pressure balance with each other.

The basic case of claiming domestic priority is Taiwan Patent Application No. 10614297 (filed on December 6, 2017), which is the basis of the priority of the present invention.

Bicycles generally consist of frame components, steering, transmission, braking, shock absorbers and other related components. Their use has become a favorite sport from modern vehicles, and even evolved into exclusive competitions.

The importance of bicycles in terms of comfort and stability in driving is mainly dependent on shock absorbers. For example, shock absorbers absorb the vibration force from the road surface to help improve driving control, and help the driving stability to maintain the stability of the vehicle. Most of the road surface vibrations are absorbed by the shock absorbers, which can reduce the burden and fatigue that is transmitted to the rider's muscles, especially in rugged road conditions (extensive mountain roads or suburbs, repaired roads).

Generally, the bicycle shock absorbers are mainly designed such that the inner and outer tubes are interpenetrated, and can be used as a telescopic displacement relative to each other, and combined with internal gas, oil pressure, spring or the combination of the foregoing to form a composite type, which is pressed by the telescopic displacement. Fluid or spring The strength of the cushioning can absorb the vibration force from the ground in general, and the pneumatic shock absorber is sensitive and lightweight, and is favored by many players.

The invention relates to a bicycle shock absorber air pressure balance device, in particular to a gas shock absorber, wherein two air chambers are in a normal state of communication with each other, and the air pressure balance can be achieved.

The utility model relates to a bicycle shock absorber air pressure balancing device, which comprises an outer tube, an inner tube, a core rod, a floating seat, a sleeve and a balance valve: the two ends of the outer tube are respectively a set end and a closed The two ends of the inner tube are respectively an air inlet end and a through end, and the through end of the inner tube is disposed in the sleeve end of the outer tube, so that the sleeve end of the outer tube is inside The inlet end of the tube and the end of the tube are slid, and an inflation valve is disposed at the inlet end, and the piercing end is provided with a piercing seat; the two ends of the core rod are respectively a fixed end and a limiting end, the fixed end of the core rod is disposed at the closed end of the outer tube, and the limiting end of the core rod extends through the wearing seat into the inner tube; the floating seat set is disposed at a limiting end of the core rod, the floating seat is slidably disposed inside the inner tube and located between the inflation valve and the wearing seat, and the floating seat respectively separates the inner tube from the inflation valve and the wearing seat Dividing into a first air chamber and a second air chamber, the floating seat is provided with a through hole penetrating through the floating seat, and an inner ring of the upper hole end of the through hole is provided with an inverted cone hole segment The through hole end edge of the through hole is provided with a large hole segment, and the large hole segment and the reverse tapered hole segment are connected to each other; the limiting end of the core rod extends in the second gas chamber; the sleeve is sleeved in the hole a core rod, and the two ends of the sleeve are respectively a mating end and a triggering portion, the sleeve The mating end of the tube is disposed on the wearing seat, and the triggering portion of the sleeve is directed toward the inflation valve and abuts against the bottom surface of the floating seat; the balancing valve is disposed in the through hole of the floating seat, the balance The valve includes a opening and closing seat, an inverted cone bolt, and an opening and closing rod. The opening and closing seat assembly is disposed in the large hole section of the through hole, and the opening and closing rod top end penetrates the opening and closing seat and the inverted cone bolt Fixedly engaging, and the triggering portion of the sleeve normally abuts against the bottom end of the opening and closing rod, so that the opening and closing rod is axially displaced from the large hole portion toward the reverse tapered hole portion, and is driven by the top end of the opening and closing rod The inverted cone bolt is in a disengaged state with respect to the inverted cone hole segment, and the first air chamber and the second air chamber are in a state of being in communication with each other to achieve a gas pressure balance of the two air chambers.

1‧‧‧ bicycle front fork

2‧‧‧External management

21‧‧‧Set end

22‧‧‧closed end

3‧‧‧Inside

301‧‧‧First air chamber

302‧‧‧Second chamber

31‧‧‧ intake end

32‧‧‧ wearing the end

33‧‧‧Inflator valve

34‧‧‧ wearing a seat

4‧‧‧core rod

41‧‧‧ fixed end

42‧‧‧limit end

421‧‧‧Limited Column

5‧‧‧ floating seat

51‧‧‧through hole

511‧‧‧ inverted cone section

512‧‧‧ large hole section

52‧‧‧ bottom side slot

53‧‧‧Limited holes

54‧‧‧ outer ring groove

55‧‧‧ airtight ring

6‧‧‧ casing

61‧‧‧ Adapter

62‧‧‧Trigger

7‧‧‧balance valve

71‧‧‧Starting and closing seat

711‧‧‧ orifice

72‧‧‧ inverted cone bolt

73‧‧‧Starting and closing pole

731‧‧‧ ring convex

74‧‧‧ Spring

The first figure is a perspective view of the present invention applied to the front fork.

The second figure is a schematic exploded view of the floating seat and the balance valve of the present invention.

The third figure is a schematic cross-sectional view of the first line segment IIIIII.

The fourth figure is a partially enlarged schematic view of the third figure.

The fifth figure is a schematic cross-sectional view of the installation floating seat of the present invention.

The sixth drawing is a partially enlarged schematic view of the fifth drawing of the present invention.

Referring to the first figure, the figure shows that the present invention is applied to the bicycle front fork 1 as an example, and is located at the right lower fork position in the drawing. Referring to Figures 1 to 4, the bicycle shock absorber air balance device of the present invention comprises an outer tube 2, an inner tube 3, a core rod 4, a floating seat 5, a sleeve 6 and a Balance valve 7: the two ends of the outer tube 2 are respectively a set end 21 and a closed end 22; The two ends of the inner tube 3 are respectively an air inlet end 31 and a through end 32, and the through end 32 of the inner tube 3 is inserted into the sleeve end 21 of the outer tube 2, so that the outer tube 2 The sleeve end 21 slides between the inlet end 31 of the inner tube 3 and the end of the insertion end 32, and an inflation valve 33 is disposed at the inlet end 31, and the insertion end 32 is assembled. a fixing seat 34 is disposed at each end of the core rod 4; the fixed end 41 of the core rod 4 is disposed at the closed end 22 of the outer tube 2, and the core rod The limiting end 42 of the fourth end of the inner tube 3 is inserted through the through hole 34; the floating seat 5 is disposed at the limiting end 42 of the core rod 4, and the floating seat 5 is slidably disposed inside the inner tube 3 and Located between the inflation valve 33 and the insertion seat 34, the floating seat 5 and the inflation valve 33 and the insertion seat 34 respectively divide the inner tube 3 into a first air chamber 301 and a second air. The floating seat 5 is provided with a through hole 51 extending axially through the floating seat 5, and the inner ring of the upper end of the through hole 51 is provided with an inverted taper hole 511, and the lower end of the through hole 51 The edge is provided with a large hole section 512; the large hole section 512 and the inverted cone hole section 511 are connected to each other; the core The limiting end 42 of the sleeve 4 extends in the second air chamber 302; the sleeve 6 is sleeved on the core rod 4, and the two ends of the sleeve 6 are respectively a mating end 61 and a triggering portion 62. The mating end 61 of the sleeve 6 is disposed on the wearing seat 34, and the triggering portion 62 of the sleeve 6 faces the inflating valve 33 and abuts against the bottom surface of the floating seat 5; the triggering portion 62 of the sleeve 6 The annular structure of the sleeve 6 is expanded from the inside to the outside; the balancing valve 7 is disposed in the through hole 51 of the floating seat 5. The balancing valve 7 includes an opening and closing seat 71, an inverted cone 72, and a The opening and closing lever 73 is disposed in the large hole section 512 of the through hole 51. The opening and closing lever 73 is disposed at the top end of the opening and closing seat 71. The reverse taper 72 is fixedly coupled, and the triggering portion 62 of the sleeve 6 normally abuts against the bottom end of the opening and closing lever 73, so that the opening and closing lever 73 is axially displaced from the large hole section 512 toward the reverse tapered hole section 511. And the reverse taper 72 is driven away from the reverse taper hole 511 by the top end of the opening and closing lever 73, and the first air chamber 301 and the second air chamber 302 are connected by the through hole 51. The pass state reaches the air pressure balance of the two air chambers.

It can be seen from the above description that the triggering portion 62 of the sleeve 6 normally abuts against the bottom end of the opening and closing rod 73, so that the opening and closing rod 73 is axially displaced from the large hole portion 512 toward the reverse tapered hole portion 511, and The top end of the closing rod 73 drives the reverse cone bolt 72 to be disengaged from the reverse cone hole segment 511. At this time, the first air chamber 301 and the second air chamber 302 are in communication with each other through the through hole 51. The air pressure balance of the two air chambers (the first air chamber 301 and the second air chamber 302) can be quickly reached.

It should be noted that the present invention is applied to a pneumatic shock absorber, and the axial direction of its operation is not matched with any remaining cushioning effect. For example, the first air chamber 301 and the second air chamber 302 of the present invention do not include The oil pressure buffer and the spring mechanical buffer do not have oil pressure buffer and spring mechanical buffer between the closed end 22 of the outer tube 2 and the through end 32 of the inner tube 3.

It is worth mentioning that the opening and closing seat 71 has a first-class hole 711 and communicates with the through hole 51. The opening and closing rod 73 is disposed in the flow hole 711, and the opening and closing rod 73 and the flow hole 711 are still In the gap, the gas on both sides of the first gas chamber 301 and the second gas chamber 302 can reach the gas pressure balance state of the two gas chambers through the through hole 51 and the flow hole 711. In addition, the bottom end of the floating seat 5 is provided with a bottom side groove 52 and communicates with the through hole 51, and the bottom side groove 52 penetrates toward the outer peripheral side of the floating seat 5 and communicates with the second air chamber 302, particularly the sleeve. 6 When the triggering portion 62 abuts against the bottom end of the opening and closing lever 73, the bottom side groove 52 is only partially shielded, that is, the maximum outer diameter of the triggering portion 62 of the sleeve 6 does not exceed the outer diameter of the floating seat 5, so that the bottom portion The side slots 52 can still be in communication with the second plenum 302.

The balance valve 7 further includes a spring 74. The spring 74 is sleeved on the opening and closing lever 73, and one end of the spring 74 is elastically abutted against a ring protrusion 731 at the bottom end of the opening and closing lever 73, and one end of the spring 74 is elastically engaged. The bottom portion of the opening and closing seat 71; when the triggering portion 62 of the sleeve 6 abuts against the bottom end of the opening and closing lever 73, the spring 74 is received between the ring convex portion 731 and the opening and closing seat 71 of the opening and closing lever 73. compression; The bottom end of the floating seat 5 is provided with a limiting hole 53 , and the limiting end 42 of the core rod 4 has a limiting post 421 positioned on the limiting hole 53 . In addition, a plurality of outer ring grooves 54 are disposed on the outer peripheral side of the floating seat 5, and the plurality of outer ring grooves 54 are sleeved with a plurality of airtight rings 55 and are in contact with the inner wall surface of the inner tube 3, thereby improving the mutual gas. Dense effect.

Referring to the fifth and sixth figures, the installation of the floating seat 5 is disclosed. The floating seat 5 is slidably disposed inside the inner tube 3, and the first air chamber 301 is inflated by the inflation valve 33 so that the The floating seat 5 is pressed and positioned at the limit end 42 of the core rod 4 (the positioning state is as shown in the third and fourth figures). Or a fixture is pushed against the floating seat 5 to be positioned at the limiting end 42 of the core rod 4 (not shown).

Claims (8)

The utility model relates to a bicycle shock absorber air pressure balancing device, which comprises an outer tube, an inner tube, a core rod, a floating seat, a sleeve and a balance valve: the two ends of the outer tube are respectively a set end and a closed The two ends of the inner tube are respectively an air inlet end and a through end, and the through end of the inner tube is disposed in the sleeve end of the outer tube, so that the sleeve end of the outer tube is inside The inlet end of the tube and the end of the tube are slid, and an inflation valve is disposed at the inlet end, and the piercing end is provided with a piercing seat; the two ends of the core rod are respectively a fixed end and a limiting end, the fixed end of the core rod is disposed at the closed end of the outer tube, and the limiting end of the core rod extends through the wearing seat into the inner tube; the floating seat set is disposed at a limiting end of the core rod, the floating seat is slidably disposed inside the inner tube and located between the inflation valve and the wearing seat, and the floating seat respectively separates the inner tube from the inflation valve and the wearing seat Dividing into a first air chamber and a second air chamber, the floating seat is provided with a through hole penetrating through the floating seat, and an inner ring of the upper hole end of the through hole is provided with an inverted cone hole segment The through hole end edge of the through hole is provided with a large hole segment, and the large hole segment and the reverse tapered hole segment are connected to each other; the limiting end of the core rod extends in the second gas chamber; the sleeve is sleeved in the hole a core rod, and the two ends of the sleeve are respectively a mating end and a triggering portion, the mating end of the sleeve is disposed on the wearing seat, and the triggering portion of the sleeve is oriented toward the inflation valve The balance valve is disposed on the through hole of the floating seat, and the balance valve includes an opening and closing seat, an inverted cone bolt, and an opening and closing lever, wherein the opening and closing seat is coupled to the through hole Large hole section, the The top end of the opening and closing rod is inserted through the opening and closing seat to be fixedly coupled with the inverted cone bolt, and the triggering portion of the sleeve normally abuts against the bottom end of the opening and closing rod, so that the opening and closing rod is directed downward from the large hole portion The taper hole section is axially displaced, and the top end of the opening and closing rod drives the reverse cone bolt to be disengaged from the reverse cone hole section, and the first air chamber and the second air chamber are connected by the through hole. The pass state reaches the air pressure balance of the two air chambers. The bicycle shock absorber air pressure balance device of claim 1, the balance valve further comprising a spring, the spring is sleeved on the opening and closing lever, and one end of the spring is biased against a ring protrusion at the bottom end of the opening and closing lever, The spring is elastically attracted to the bottom of the opening and closing seat; when the triggering portion of the sleeve abuts the bottom end of the opening and closing lever, the spring is compressed by the ring convex portion and the opening and closing seat of the opening and closing lever And the trigger portion does not abut the bottom end of the opening and closing rod, and the spring is naturally stretched to drive the opening and closing rod to be displaced from the inverted cone hole segment toward the large hole portion, and the reverse cone bolt is synchronously displaced with the opening and closing rod The outer peripheral side is adhered to the inner peripheral side of the inverted tapered hole section. The bicycle shock absorber air pressure balance device of claim 2, wherein the bottom end of the floating seat is provided with a limiting hole, and the limiting end of the core rod has a limiting column positioned at the limiting hole. The bicycle shock absorber air pressure balancing device according to claim 3, wherein the opening and closing seat has a first-class hole and communicates with the through hole, the opening and closing rod is disposed in the flow hole, and the opening and closing rod and the flow hole are There are still gaps between them. The bicycle shock absorber air pressure balancing device according to claim 4, wherein the bottom end of the floating seat is provided with a bottom side groove and communicates with the through hole, and the bottom side groove penetrates and communicates with the outer peripheral side of the floating seat. Second air chamber. The bicycle shock absorber air pressure balancing device according to any one of claims 1 to 5, wherein the trigger portion of the sleeve is an annular structure that is expanded from the inside to the outside by the sleeve. The bicycle shock absorber air pressure balancing device according to claim 6, wherein the outer peripheral side of the floating seat is provided with a plurality of outer ring grooves, and the plurality of outer ring groove rings are sleeved with a plurality of airtight rings and are opposite to the inner wall surface of the inner tube contact. The utility model relates to a bicycle shock absorber air pressure balancing device, which comprises an outer tube, an inner tube, a core rod, a floating seat, a sleeve and a balance valve: the two ends of the outer tube are respectively a set end and a closed The two ends of the inner tube are respectively an air inlet end and a through end, and the through end of the inner tube is disposed in the sleeve end of the outer tube, so that the sleeve end of the outer tube is inside The inlet end of the tube and the end of the tube are slid, and an inflation valve is disposed at the inlet end, and the piercing end is provided with a piercing seat; the two ends of the core rod are respectively a fixed end and a limiting end, the fixed end of the core rod is disposed at the closed end of the outer tube, and the limiting end of the core rod penetrates the wearing seat into the inner tube; the floating seat is slidably disposed The inner tube is located between the inflation valve and the wearing seat, and the floating seat separates the inner tube into a first air chamber and a second air chamber, respectively. The floating seat is provided with a through hole penetrating through the floating seat, and an inner ring of the upper hole end of the through hole is provided with an inverted taper hole section, and a hole of the lower hole end of the through hole is provided with a large hole The large hole section and the inverted cone hole section are connected to each other; the limiting end of the core rod extends in the second gas chamber; the sleeve is sleeved on the core rod, and the two ends of the sleeve are respectively matched Pick-up and touch The mating end of the sleeve is disposed on the wearing seat, and the triggering portion of the sleeve is directed toward the inflation valve and abuts against the bottom surface of the floating seat; the balancing valve is disposed on the floating seat a through hole, the balancing valve includes an opening and closing seat, an inverted cone bolt, and an opening and closing rod, wherein the opening and closing seat is disposed in a large hole section of the through hole, and the opening and closing rod top end penetrates the opening and closing seat Fixingly coupled with the inverted cone bolt, and the inverted cone bolt is normally in contact with the reverse cone hole segment, thereby blocking gas circulation between the first air chamber and the second air chamber; the first air chamber is blocked by the inflation valve Inflating so that the floating seat is pressed and positioned at the limiting end of the core rod, and the triggering portion of the sleeve normally abuts against the bottom end of the opening and closing rod, so that the opening and closing rod is directed from the large hole segment toward the reverse tapered hole The segment is axially displaced and is driven by the top end of the opening and closing lever to be in a disengaged state from the opposite conical hole segment, and the through hole is formed between the first air chamber and the second air chamber The connected state reaches the air pressure balance of the two air chambers.