TWI617475B - Adjustable and bufferable elevating device - Google Patents

Abstract

The invention provides an adjustable and cushionable lifting device, comprising: an outer tube, a guiding rod, a movable tube, a sleeve, a spring, a guiding positioning member and a manipulation switch. The guide rod is fixed in the outer tube; the movable tube is movably disposed in the outer tube, and the sleeve is engaged with the end of the movable tube; the spring is sleeved on the guide rod for holding on the sleeve; guiding the positioning member The sleeve is in rolling contact with the guiding rod; the operating switch is operated between a first position and a second position. In the first position, the operating switch restricts the guiding positioning member from rotating relative to the guiding rod, so that the movable tube is The positioning is formed relative to the outer tube. In the second position, the steering switch releases the guiding positioning member to enable the guiding positioning member to quickly rotate along the guiding rod, thereby causing the movable tube to be raised relative to the outer tube.

Description

Adjustable and cushionable lifting device

The invention relates to a lifting device, in particular to an adjustable and cushionable lifting device, which is characterized by mechanical adjustment and lifting, which has the characteristics of good reliability and convenient operation.

In order to conform to the user's body shape, many products are equipped with lifting devices for the user to adjust the height of the position according to the height of the body, so as to increase the comfort of use.

For example, if the height adjustment of the bicycle seat cushion is to provide the rider with better force and support when riding, to avoid the seat cushion position being too high, the arm burden is too large, and the seat cushion position is too low. The burden on the buttocks is too large; and the height adjustment of the seat is to provide the user's foot with better stretchability in order to conform to the height and shape, and to avoid the foot being uncomfortable due to the inappropriate seat height.

However, most of the lifting devices currently in use use the structure of a hydraulic cylinder or a pneumatic cylinder to adjust the height position of the product by telescopic expansion. However, the hydraulic cylinder and the pneumatic cylinder have the risk of oil leakage and air leakage, especially After using for a period of time, due to the influence of oil leakage and air leakage, the use gap is easy to occur, so that the supporting force of the lifting device is insufficient, which is not reliable in use, and often there is still a downward movement after positioning, and the effect is used. Therefore, it is weakened and does not meet the expectations of the market.

In order to solve the above problems, the present invention discloses an adjustable and cushionable lifting device, which is a mechanical adjustment, which can adjust the activity by guiding the card beads in the positioning member to engage with the guide bar and through the control switch. The lifting position of the tube and the outer tube is characterized by good reliability and convenient operation.

In order to achieve the above object, the present invention provides an adjustable and cushionable lifting device, comprising: an outer tube; a guiding rod fixed in the outer tube; a spiral groove is arranged around the circumference of the guiding rod; The activity is disposed in the outer tube and can be displaced along the guide rod, and one end of the movable tube can be used to engage a sleeve; a spring is sleeved on the guide rod, the spring is used to hold the sleeve; and a guiding positioning member is The sleeve is disposed on the sleeve and is rotatably sleeved on the guide rod, the guide positioning member has a card ball for rollingly contacting the spiral groove; and a control switch is disposed at a first position and a second position During the first position, the card is locked in the spiral groove, and the guiding positioning member cannot rotate relative to the guiding rod, so that the movable tube forms a positioning with respect to the outer tube, and in the second position, the control switch releases the guiding position. And enable the guiding and positioning member to quickly rotate along the spiral groove to urge the movable tube to be raised relative to the outer tube.

Thereby, the present invention guides the positioning member by guiding the positioning member and the matching groove of the guiding rod and the spiral groove, when the guiding positioning member is not jammed, and at the same time, by the spring preloading, the positioning member is guided. The guide rod can be quickly and smoothly rotated, so that the movable tube can quickly adjust the height position relative to the outer tube. Conversely, when the guiding positioning member is jammed, the guiding positioning member and the guiding rod form a positioning.

Therefore, the present invention is a mechanical adjustment structure, which not only has the convenience of operation, but also has better reliability and can maintain a certain supporting force, so that the present invention can be applied to a bicycle or a seat, and provides a user. Adjust the lift according to the body shape.

In addition, the adjustable and cushionable lifting device of the present invention further includes a spacer ring disposed at one end of the guide rod, a spring disposed between the spacer ring and the sleeve, and a spacer member disposed at an end of the spacer ring and the guide rod. When the movable tube carries the load, the elastic force of the cushioning member is supported by the spacer ring, so as to be used as a buffer for the movable tube to be loaded and lowered, and if used on the bicycle seat tube, the rider can be provided. buffer.

10‧‧‧External management

20‧‧‧guides

21‧‧‧First Fixed Department

22‧‧‧Second fixed department

23‧‧‧Spiral groove

24‧‧‧First stop

25‧‧‧Second stop

251‧‧‧through slot

30‧‧‧ Activity tube

31‧‧‧ positioning groove

32‧‧‧Threaded Department

33‧‧‧ gap

40‧‧‧ sleeve

41‧‧‧ bumps

42‧‧‧Perforation

43‧‧‧ accommodating slots

44‧‧‧through holes

50‧‧‧Sets

51‧‧‧ accommodating space

52‧‧‧Opening

60‧‧‧ spacer ring

61‧‧‧Non-round holes

62‧‧‧ Spring

63‧‧‧ cushioning parts

70‧‧‧ Guided positioning parts

71‧‧‧ 内孔

72‧‧‧ card beads

73‧‧‧Kakong

74‧‧‧radial holes

75‧‧‧Parts

80‧‧‧Control switch

81‧‧‧Steel cable

82‧‧‧Handles

83‧‧‧Clock Department

90‧‧‧Retaining components

91‧‧‧Limited parts

911‧‧‧ screw hole

912‧‧ ‧ rim

92‧‧‧Dust cover

93‧‧‧Locking parts

94, 95‧‧‧ elastic washers

100‧‧‧ bicycle

200‧‧‧ seats

Fig. 1 is a schematic view showing the appearance of the present invention.

Fig. 2 is an exploded view of the structure of the present invention.

Fig. 3 is a schematic cross-sectional view showing the present invention.

Fig. 4 is a partial cross-sectional view showing the present invention.

[Fig. 5] is a schematic view showing the cooperation of the guide positioning member and the guide rod of the present invention.

[Fig. 6] is a schematic diagram (1) of the lifting operation of the present invention.

[Fig. 7] is a schematic diagram (2) of the lifting operation of the present invention.

Fig. 8 is another embodiment of the present invention.

Fig. 9 is a schematic view of the bicycle used in the present invention.

Fig. 10 is a schematic view of the present invention applied to a seat.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. The various items in the examples are drawn to scale in the description and not to the actual elements, and are described in the foregoing.

Referring to Figures 1 to 10, the adjustable and cushionable lifting device of the present invention comprises: an outer tube 10, one end of which can be inserted into a joint to be joined, such as a bicycle seat tube or a seat tube The other end can be joined to a waiting piece such as a bicycle seat cushion or a seat cushion.

A guide rod 20 is provided with a non-circular first fixing portion 21 and a second fixing portion 22 at both ends. A spiral groove 23 having a rectangular shape is disposed between the first fixing portion 21 and the second fixing portion 22. The first fixing portion 21 of the guiding rod 20 is connected with a first stopping member 24 for fastening the guiding rod 20 to the outer tube 10. The first stopping member 24 is screwed to the outer tube. 10, and the end of the first fixing portion 21 of the guiding rod 20 can hold a C buckle to prevent the first stopping member 24 from being disengaged.

A movable tube 30 is disposed in the outer tube 10 and is displaceable along the guide rod 20. The outer circumference of the movable tube 30 is provided with a plurality of positioning grooves 31, and each positioning groove 31 is along the movable tube 30. The axial end of the movable tube 30 has a threaded portion 32. The end of the threaded portion 32 is provided with two notches 33. The second fixing portion 22 of the guiding rod 20 is fixed with a second stopping member 25, The second stopper 25 is received in the movable tube 30, and the second stopper 25 has a through hole 251 at the periphery.

A sleeve 40 has a pair of protrusions 41 at one end for engaging with the notch 33. The sleeve 40 is axially disposed with a through hole 42. One end of the through hole 42 is provided with a receiving groove 43. Further, parallel to the through hole 42 and the hole 42 The groove 43 is provided with a uniform perforation 44.

A set of 50 is a cylindrical shape, and has an internal thread for screwing into the threaded portion 32 of the movable tube 30. The sleeve 50 has a receiving space 51 for accommodating the sleeve 40, and a perforation. 42, The receiving groove 43 is provided with the opening 52 of the same axial center, so that the sleeve 40 is connected to the end of the movable tube 30, so that the guiding rod 20 passes through the through hole 42, the receiving groove 43 and the opening 52 to hold the sleeve 40 At the end of the movable tube 30.

A spacer ring 60 has a non-circular hole 61 for receiving the first fixing portion 21 of the guide rod 20, and a spring 62 is disposed between the spacer ring 60 and the sleeve member 50. The spring 62 is sleeved on the sleeve 62. The guide rod 20 is mounted on the guide member 50.

A buffering member 63 is sleeved on the guiding rod 20 and located between the spacer ring 60 and the first stopping member 24, and the buffering member 63 can be a compression spring for borrowing the weight when the movable tube 30 carries the load. The elastic force of the cushioning member 63 is held by the spacer ring 60 as a buffer for the movable tube 30 to be moved downward by the load.

A guiding positioning member 70 is disposed in the receiving groove 43 of the sleeve 40 and is rotatably sleeved on the guiding rod 20. The guide positioning member 70 has an inner hole 71 through which the guide rod 20 is bored, and an inner wall surface of the inner hole 71 is embedded with a bead 72 so that the bead 72 is inserted by the inner hole 71 and mechanically The method is embedded and protrudes from the wall surface of the inner hole 71 to be in rolling contact with the spiral groove 23 of the guide rod 20. As shown in FIG. 5, in the embodiment of the present invention, the ball beads 72 are three and equidistant rings are disposed on the wall surface of the inner hole 71, and the inner wall surface of the inner hole 71 is recessed with three bead grooves for the card beads 72 to be embedded. In order to stably contact the spiral groove 23. In addition, the guiding and positioning member 70 is provided with a plurality of engaging holes 73 in the outer peripheral ring, and the axial line of the engaging hole 73 is parallel to the inner hole 71.

A control switch 80 includes a cable 81 disposed in the movable tube 30 and a handle 82 for moving the movable cable 80 in the movable tube 30. The end of the cable 81 has a latching portion 83 for The through hole 44 of the sleeve 40 is inserted to selectively engage the engaging portion 83 in one of the latching holes 73 of the guiding and positioning member 70. The handle 82 can be disposed on the movable tube 30, and the cable 81 can be The through groove 251 of the second stopper 25 is inserted to prevent the wire rope 81 from shaking.

A holding component 90 includes a limiting member 91, a dust cover 92, a locking member 93 and two elastic washers 94, 95. The limiting member 91 is sleeved at one end of the outer tube 10 and has a screw at the other end. The hole 911 and the flange 912 disposed on the inner side of the screw hole 911 are configured to correspond to the positioning groove 31 of the movable tube 30, so that the movable tube 30 cannot rotate relative to the outer tube 10, so that when the movable tube 30 is adjusted and lifted relative to the outer tube 10, The dust cover 92 is locked to the screw hole 911, and a resilient washer 94 is disposed between the dust cover 92 and the limiting member 91. The locking member 93 locks the limiting member 91 different from the dustproof cover. The end of the 92, and another elastic washer 95 is disposed between the locking member 93 and the limiting member 91, wherein the dustproof cover 92 is opposite to the rotating direction of the locking member 93 to be tightly fixed to the movable tube 30 and the outside. Between the tubes 10.

Referring to FIG. 3 and FIG. 4 , which is a schematic diagram of the positioning state of the present invention, the engaging portion 83 of the cable 81 is clamped to a card hole 73 of the guiding member 70 by the control switch 80 being in the first position. The guiding positioning member 70 can not be rotated relative to the guiding rod 20, and the ball 72 can be locked in the spiral groove 23, so that the movable tube 30 does not axially displace relative to the outer tube 10, so that the movable tube 30 is positioned relative to the outer tube 10. At the same time, the spring 62 maintains a certain elastic force against the sleeve 50.

Referring to FIG. 6 and FIG. 7 , it is a schematic diagram of the lifting operation of the present invention, wherein when the steering switch 80 is moved from the first position to the second position, the cable 81 is pulled, so that the engaging portion 83 of the cable 81 is engaged. When the card hole 73 of the guiding and positioning member 70 is pulled away, the guiding and positioning member 70 is no longer jammed, and at the same time, due to the spring 62 being prestressed on the sleeve member 50, the elastic force of the spring 62 is released. The guiding and positioning member 70 can enable the guiding and positioning member 70 to rapidly rotate along the spiral groove 23 of the guiding rod 20 by the contact relationship between the ball and the ball 72 and the spiral groove 23, so that the guiding and positioning member 70 can be changed. The position on the guide rod 20, in this way, the movable tube 30 can be adjusted relative to the outer tube 10 as it moves, as shown in FIG.

As shown in FIG. 8, another embodiment of the present invention is different from the foregoing embodiment in that the inner hole 71 of the guiding member 70 and a communicating radial hole 74 are provided, and the inner hole 71 is worn by the guiding rod 20. It is provided that the radial hole 74 is inserted into the bead 72 and abutted against a top abutting member 75 to protrude from the wall surface of the inner hole 71 to be in contact with the spiral groove 23. Wherein, the radial hole 74 is a screw hole, and the abutting member 75 is a bolt.

Therefore, the present invention can be applied to the bicycle seat tube of the bicycle 100. As shown in FIG. 9, the above-mentioned structural adjustment can change the height position of the bicycle seat cushion to meet the riding body and provide better riding. Sex.

Furthermore, the present invention can also be applied to the seat tube of the seat 200, as shown in FIG. 10, and similarly, through the foregoing structural adjustment, the height position of the seat cushion can be changed to conform to the user's body. Provide better usability.

In summary, the adjustable lifting device of the present invention can be applied to a bicycle 100 seat tube or a seat tube of the seat 200, etc., and the guiding position of the guiding switch 70 can be selectively locked by the manipulation action of the control switch 80. Whether or not the movable tube 30 can be adjusted relative to the outer tube 10 for lifting movement, the structure of the invention does not need to use gas or hydraulic cylinders, so there is no problem of air leakage or oil leakage, so as to ensure that the supporting force is not caused. Reduced consumption and better reliability.

Furthermore, the present invention utilizes the ball 72 of the guiding positioning member 70 to be in rolling contact with the spiral groove 23 of the guiding rod 20, and has the effect of reducing the friction force, so that when the guiding positioning member 70 is not jammed, the invention can simultaneously borrow Because the spring 62 is pre-stressed, the guiding and positioning member 70 can be quickly rotated relative to the guiding rod 20, and the rotation process is extremely smooth, so that the movable tube 30 can quickly adjust the height position relative to the outer tube 10, which is quite convenient. .

While the invention has been described in terms of the foregoing embodiments, various modifications may be The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications or changes made without departing from the spirit of the invention are within the scope of the invention.

Claims (10)

An adjustable and cushionable lifting device comprises: an outer tube; a guiding rod fixed in the outer tube, a spiral groove is arranged around the circumference of the guiding rod; and a movable tube is arranged to be outside the movable tube Inside the tube, and can be displaced along the guiding rod, and one end of the movable tube can be used to engage a sleeve; a spring is sleeved on the guiding rod, the spring is used to hold the sleeve; a guiding positioning member The sleeve is disposed on the sleeve and is rotatably sleeved on the guide rod, the guide positioning member has a card ball for rollingly contacting the spiral groove; and a control switch including a threading device for the activity a cable in the tube and a handle for controlling the movement of the cable in the movable tube, the end of the cable has a latching portion, and the operating switch is operated between a first position and a second position, the first Positioning, the engaging portion of the cable is engaged with the guiding positioning member, the bead is locked in the spiral groove, and the guiding positioning member cannot rotate relative to the guiding rod, so that the movable tube is opposite to the outer tube Forming a positioning, in which the engagement portion of the cable is disengaged from the guiding position The manipulation of the switch is released the guiding member to enabling positioning of the guide member can be quickly swirled along the spiral groove, causes the movable tube raised position relative to the outer tube. The adjustable and cushionable lifting device of claim 1, wherein the guiding positioning member has an inner hole for the guide rod to be inserted, and the card bead is embedded on the wall surface of the inner hole and protrudes into contact with In the spiral groove. The adjustable and cushionable lifting device of claim 1, wherein the guiding positioning member has an inner hole and a communicating radial hole, the inner hole is for the guiding rod to be pierced, and the radial direction The hole is inserted into the bead and is abutted against a top abutting member to protrude from the inner wall surface to contact the spiral groove. The adjustable and cushionable lifting device of claim 2, wherein the card beads are three and equidistant rings are disposed on the inner wall surface. The adjustable and cushionable lifting device of claim 1, further comprising a spacer ring disposed at one end of the guiding rod, the spring being disposed between the spacer ring and the sleeve. The adjustable and cushionable lifting device of claim 5, wherein the first end of the guiding rod is connected to the first stopping member, and the first stopping member is screwed into the outer tube. A buffer member is disposed between the stopper and the spacer ring. The adjustable and cushionable lifting device of claim 6, wherein the other end of the guiding rod is provided with a second stopping member for preventing the movable tube from being disengaged from the outer tube. The adjustable and cushionable lifting device of claim 1, further comprising a set of components for receiving the sleeve to connect the sleeve to the movable tube. The adjustable and cushionable lifting device of claim 1, wherein the outer peripheral ring of the guiding positioning member is provided with a plurality of card holes, and the cable is operated by the handle for selectively engaging the guiding device. One of the card holes of the positioning member. The adjustable and cushionable lifting device of claim 9, wherein a holding component is disposed between the movable tube and the outer tube for preventing the movable tube from being deflected relative to the outer tube when the movable tube is moved.