TWM596568U - Elevating device - Google Patents

Abstract

A lifting device is applied to a bicycle tube body. The lifting device includes an outer tube, an inner tube, a tight fitting and a seal. The inner tube is displaceably sleeved inside the outer tube. The tight fitting is connected to one end of the outer tube. The tightening member includes a first recess and a second recess. The first concave portion surrounds one of the outer peripheral surfaces of the outer tube and forms an accommodating space with the outer peripheral surface of the outer tube. The tightening member tightly tightens the bicycle tube body in the accommodating space. The sealing member is connected to the second recess of the tight-fitting member. One surface of the sealing member abuts the outer peripheral surface of the inner tube, thereby closing a gap between the inner tube and the outer tube. In this way, the tight fitting and honey sealing pieces are integratedly arranged, which can increase the freedom of displacement of the inner tube and reduce the difficulty of assembling the lifting device and the bicycle tube body.

Description

Lifting device

The present invention relates to a lifting device, in particular to a lifting device that integrates a tight-fitting member and a sealing member.

Many activities require the user to maintain a long sitting posture. For example, many activities such as riding a motorcycle, bicycle, driving a car, office work, meeting, dining, or even fitness, medical treatment, etc., require the user to sit in a sitting position. In order to carry the weight of the user, the user does not have to spend a lot of effort to maintain a sitting position. In the above-mentioned activities, seat cushions or seats are arranged so that the user can sit on it. Therefore, many seat cushions or seats improve the comfort and accuracy of the user's sitting posture by improving the ergonomic structure. In some more intense sports situations, such as bicycle competition, the user must maintain a certain sitting posture for a long time, and because the correct sitting posture is related to the result, the comfort and correctness of the sitting posture are particularly required. Therefore, in addition to improving the geometric shape of the seat cushion itself, more importantly, the height of the seat cushion needs to be adjusted according to different body shapes of the user, so a lifting device capable of adjusting the height of the seat cushion has been developed.

Generally, the lifting device such as a bicycle seat cushion can be roughly divided into a mechanical drive, a hydraulic drive, a pneumatic drive, and an oil-air hybrid drive according to its different driving methods. Mechanical drive, hydraulic drive and pneumatic drive have been widely used. However, many problems still need to be further improved. For example, The mechanical driving method is limited by its mechanism, and its adjustment method has paragraphs, which cannot achieve the smoothness of instant and stepless adjustment. Pneumatic drive has poor response speed and accuracy, and its output power is small. The hydraulic drive needs to consider the problem of the oil seal, which increases the complexity of its structure. Therefore, a hybrid drive of oil and gas was developed. The oil-gas hybrid drive is generally filled with oil bodies and gases in mutually interlocking tube groups. The tube body group includes a plurality of tube bodies that can be relatively linearly displaced. Cooperate with the displacement of the pipe body and the pressure balance of oil pressure and air pressure to achieve the function of positioning and adjusting the pipe body.

In the above-mentioned oil-gas hybrid-driven lifting device, the tightening member for combining the lifting device with the bicycle tube body and the oil seal member for preventing oil or gas leakage are usually provided separately, causing the two components to occupy a certain position , Resulting in a restricted travel range of the bicycle tube. Furthermore, because they are separately installed on different bicycle tubes, the complexity of the mutual assembly of the structures is increased. Therefore, it is an important goal to improve the structure of the above mentioned lifting device and bicycle tube assembly.

One object of the present invention is to provide a lifting device that can be easily assembled with a bicycle tube body, so as to achieve the effects of extending the lifting stroke, simplifying assembly complexity, and reducing manufacturing costs.

According to an embodiment of the present invention, a lifting device is provided, which is applied to a bicycle tube body. The lifting device includes an outer tube, an inner tube, a tight fitting and a seal. The inner tube is displaceably sleeved inside the outer tube. The tight fitting is connected to one end of the outer tube, and includes a first concave portion and a second concave portion. First concave The portion surrounds one of the outer peripheral surfaces of the outer tube, and forms an accommodating space with the outer peripheral surface of the outer tube. The tightening member tightens the bicycle tube body in the accommodating space through the first recess. The sealing member is connected to the second recess of the tight-fitting member. One surface of the sealing member abuts the outer peripheral surface of the inner tube, thereby closing a gap between the inner tube and the outer tube.

In the lifting device of the above embodiment, the first concave portion of the tightening member may have a ring shape, and the first concave portion may form opposite two fixed arms. An opening is correspondingly formed on each of the two fixed arms.

The lifting device of the above embodiment may further include a locking member, which is set through an opening on each fixed arm, so that the two fixed arms are close to tighten.

In the lifting device of the above embodiment, the sealing member may be made of an elastic material.

In the lifting device of the above embodiment, the sealing member may have a ring shape.

The lifting device of the above embodiment may further include a pressing member disposed between the tightening member and the outer tube.

In the lifting device of the above embodiment, the bicycle tube body may be a single tube.

The lifting device of the above embodiment further includes an inner sleeve, a piston, an oil passage, a needle valve and a switch. The inner sleeve is movably disposed in the inner tube. The piston is movably disposed in the inner sleeve. The oil passage is set in the piston. The needle valve is arranged on one of the circulation paths of the oil passage to open or close the oil passage. The switch is used to open or close the needle valve, wherein the switch can be arranged on the inner tube or the outer tube. When the needle valve is opened through the switch, the oil passage is opened, and one of the oil bodies of the inner casing displaces the piston through the oil passage to change the relative position of the inner pipe and the outer pipe.

The lifting device of the above embodiment may further include a shock absorber rod, which is movably disposed at one end of the inner sleeve. When the suspension rod is stressed, the suspension rod is displaced relative to the inner casing and compresses a gas in the inner casing, and the inner and outer pipes are relatively displaced.

The lifting device of the above embodiment may further include a control lever. One end of the control rod is connected to one end of the inner sleeve, and the other end of the control rod is connected to the outer pipe. The needle valve is displaceably installed on the control rod and extends into the piston, thereby opening or closing the oil passage.

In the lifting device of the above embodiment, one end of the inner tube may further include a mounting seat, which can be used to mount a bicycle seat cushion.

The lifting device of the above embodiment may further include a first bush and a second bush. The first bushing is disposed on the outer tube, and is located relatively below the tight fitting. The second bushing is disposed on the inner tube and is located relatively below the first bushing.

In the lifting device of the above embodiment, the first bushing includes a plurality of concave portions, the second bushing includes a plurality of convex portions, and each convex portion corresponds to each concave portion. When the inner tube is displaced relative to the outer tube, each convex portion passes through each concave portion.

The lifting device of the above embodiment may further include a groove, an anti-rotation member and a sliding channel. The groove is formed on the inner tube and is located above the second bush. The anti-rotation member is correspondingly arranged in the groove. The sliding channel is formed between the outer tube and the inner tube and corresponds to the position of the anti-rotation member. When the inner tube is displaced relative to the outer tube, the anti-rotation member can be displaced in the sliding channel.

100‧‧‧Lifting device

110‧‧‧Outer tube

111‧‧‧ shock absorber

170‧‧‧Oil

180‧‧‧ Needle valve

190‧‧‧ switch

112‧‧‧Control lever

120‧‧‧Inner tube

121‧‧‧Groove

122‧‧‧slide channel

130‧‧‧Tightening

131‧‧‧First recess

131a‧‧‧fixed arm

131b‧‧‧fixed arm

132‧‧‧Second recess

140‧‧‧Seal

150‧‧‧Inner casing

160‧‧‧piston

210‧‧‧Mount

220‧‧‧Bike seat cushion

230‧‧‧Lock firmware

240‧‧‧ Urgent

250‧‧‧First bush

251‧‧‧recess

260‧‧‧Second bushing

261‧‧‧Convex

270‧‧‧Anti-rotation parts

300‧‧‧seat

S‧‧‧accommodation space

O‧‧‧opening

FIG. 1A is a schematic structural diagram of a lifting device according to an embodiment of the present invention; FIG. 1B is a structural schematic diagram of a lifting device according to another embodiment of the present invention; FIG. 2 is a schematic drawing of FIG. 1A Structure diagram of the tightening member of the lifting device; Figure 3 is a schematic diagram showing the structure of the gas-hydraulic drive structure of the lifting device in Figure 1A; Figure 4 is a diagram showing the structure of the first bushing in Figure 1A Schematic diagram; Figure 5 is a schematic diagram showing the structure of the second bushing in Figure 1A; Figure 6 is a schematic diagram showing the structure of the first bushing, second bushing and anti-rotation member in Figure 1A; FIG. 7 is a perspective view showing the present invention of the lifting device set on a bicycle seat tube; and FIG. 8 is an enlarged schematic view of a part of the structure of FIG. 7.

In the following description, specific embodiments of the present invention will be described with reference to the accompanying drawings. Many practical details will be explained together in the following description. However, these practical details should not be used to limit the new model. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the diagram, some conventional structures and components will be shown in the diagram simply. It is shown in an intentional way; and duplicate elements will probably be represented using the same number.

Please refer to Figures 1A, 1B, 2 and 3 together. FIG. 1A is a schematic structural diagram of a lifting device 100 according to an embodiment of the invention. FIG. 1B is a schematic structural diagram of a lifting device 100 according to another embodiment of the present invention. FIG. 2 is a schematic structural diagram of the tightening member 130 of the lifting device 100 in FIG. 1A. FIG. 3 is a schematic structural diagram of the gas-hydraulic driving structure of the lifting device 100 in FIG. 1A. As shown in the embodiment of FIG. 1A, the lifting device 100 of the present invention includes an outer tube 110, an inner tube 120, a tightening member 130 and a sealing member 140. The inner tube 120 is movably sleeved in the outer tube 110. The tight fitting 130 is connected to one end of the outer tube 110. The tightening member 130 includes a first concave portion 131 and a second concave portion 132. The first concave portion 131 surrounds an outer peripheral surface of the outer tube 110 and forms an accommodating space S with the outer peripheral surface of the outer tube 110. When the lifting device 100 is assembled with the bicycle tube body, the bicycle tube system is sleeved in the accommodating space S, and tightly tightens the bicycle tube body in the accommodating space S through the first recess 131 of the tightening member 130. The sealing member 140 is connected to the second recess 132 of the tightening member 130. One surface of the sealing member 140 abuts an outer peripheral surface of the inner tube 120, thereby closing a gap between the inner tube 120 and the outer tube 110. The sealing member 140 may be made of an elastic material, and may have a ring shape for the inner tube 120 to pass through. The function of the sealing member 140 is to prevent oil or gas from leaking through the gap between the inner tube 120 and the outer tube 110. In other embodiments, the sealing member 140 may use an oil seal structure, or may be made of one or more materials, and there is no particular limitation. In other embodiments, as shown in FIG. 1B, the lifting device 100 may further include a pressing member 240 disposed between the tightening member 130 and the outer tube 110. The pressing member 240 can cooperate with the tightening member 130 to reinforce and fix the bicycle tube body and the outer tube 110. When the tight fitting 130 Second, when the fixing arms 131a and 131b are tightened, the pressing member 240 is also squeezed, so that the outer tube 110 can be more firmly fixed to the bicycle tube body. In detail, in the embodiment of FIG. 2, the first concave portion 131 of the tightening member 130 may have a ring shape, and the first concave portion 131 correspondingly forms two fixed arms 131a and 131b. The two fixing arms 131a and 131b are respectively provided with corresponding openings O. The lifting device 100 further includes a lock 230. After the bicycle tube body is sleeved in the accommodating space S, the locking member 230 (for example: a screw) can be inserted through the opening O on the two fixing arms 131a and 131b for locking. In this way, the two fixed arms 131a and 131b can be tightened closer to tighten the bicycle tube body and the outer tube 110.

The operation mechanism of the displacement of the inner tube 120 relative to the outer tube 110 in the lifting device 100 of the present invention will be explained. In the embodiment shown in FIG. 1A, the lifting device 100 of the present invention uses a gas-hydraulic drive structure, so that the inner tube 120 can be displaced relative to the outer tube 110, and can also have a shock-absorbing effect. As shown in FIG. 3, the lifting device 100 may include an inner sleeve 150, a piston 160, an oil passage 170, a needle valve 180, and a switch 190. The inner sleeve 150 is movably disposed in the inner tube 120. The piston 160 is movably disposed in the inner sleeve 150. The oil passage 170 is provided in the piston 160. The needle valve 180 is disposed on one of the circulation paths of the oil passage 170 to open or close the oil passage 170. The switch 190 is used to open or close the needle valve 180, wherein the switch 190 can be disposed on the inner tube 120 or the outer tube 110. When the needle valve 180 is opened through the switch 190, the oil passage 170 is opened, and one of the oil bodies of the inner sleeve 150 moves the piston 160 through the oil passage 170 to change the relative positions of the inner tube 120 and the outer tube 110.

The lifting device 100 may further include a shock-absorbing rod 111. The suspension rod 111 is movably disposed at one end of the inner sleeve 150. When the shock lever 111 is stressed, avoid The shock rod 111 is displaced relative to the inner sleeve 150 and compresses a gas in the inner sleeve 150, and the inner tube 120 and the outer tube 110 are relatively displaced. In this way, a cushioning effect can be provided.

In detail, the inner sleeve 150 can contain gas and oil bodies. The gas is adjacent to one end of the inner sleeve 150, and the oil body is adjacent to the other end of the inner sleeve 150. Since the gas is compressible and its pressure increases as the volume becomes smaller, when the shock absorber rod 111 is stressed, it can extend into the inner sleeve 150 to compress the gas and achieve the shock absorber effect.

The lifting device 100 may further include a control rod 112. One end of the control rod 112 is connected to one end of the inner sleeve 150, and the other end of the control rod 112 is connected to the outer tube 110. The needle valve 180 is movably disposed on the control rod 112 and can extend into the piston 160. Thereby, the oil passage 170 can be opened or closed.

According to the above, when using, the user can operate the switch 190 to push the needle valve 180 to open the oil path 170. After the oil passage 170 is opened, the oil body can pass through. At this time, the piston 160 can be displaced to adjust the relative position of the inner tube 120 and the outer tube 110. When the inner tube 120 is displaced to the preset position relative to the outer tube 110, the user can operate the switch 190 to close the oil path 170. At this time, the position of the inner tube 120 can be fixed. In addition, when the unevenness of the road surface causes the inner tube 120 to be stressed, the shock absorber rod 111 may relatively enter the compressed gas in the inner sleeve 150 to provide a cushioning and shock absorber function. Therefore, the lifting device 100 of the present invention can have the functions of height adjustment and shock absorption.

Please continue to refer to Figure 4 to Figure 6. FIG. 4 is a schematic structural diagram of the first bushing 250 in FIG. 1A. FIG. 5 is a schematic structural diagram of the second bush 260 in FIG. 1A. FIG. 6 is a schematic structural diagram of the first bush 250, the second bush 260, and the anti-rotation member 270 in FIG. 1A. During the displacement of the inner tube 120 relative to the outer tube 110, they often interfere or rotate with each other, causing the inner tube 120 The displacement is not smooth or cannot be positioned correctly, and may cause problems that cannot prevent oil and gas leakage. Therefore, in the present invention, a variety of mechanisms are provided between the outer tube 110 and the inner tube 120 to prevent the inner tube 120 from rotating relative to the outer tube 110 and involving oil and gas leakage. In the embodiment shown in FIG. 1A, the lifting device 100 of the present invention further includes a first bushing 250 and a second bushing 260. The first bushing 250 is disposed on the outer tube 110 and is located relatively below the tightening member 130. The second bushing 260 is disposed on the inner tube 120 and is located relatively below the first bushing 250. The first bush 250 includes a plurality of concave portions 251, and the second bush 260 includes a plurality of convex portions 261, and each convex portion 261 corresponds to each concave portion 251. When the inner tube 120 is displaced relative to the outer tube 110, each convex portion 261 passes through each concave portion 251. This prevents the inner tube 120 from interfering with each other when the inner tube 120 is displaced relative to the outer tube 110. At the same time, the first bushing 250 and the second bushing 260 can cooperate with the original sealing member 140 to completely seal the gap between the inner tube 120 and the outer tube 110 to achieve the effect of preventing oil and gas leakage.

As shown in Figure 6, and please refer to Figure 1A. A groove 121 may be formed on the inner tube 120, which is located above the second bush 260. An anti-rotation element 270 can be correspondingly disposed in the groove 121. A sliding channel 122 is formed between the inner tube 120 and the outer tube 110. The sliding channel 122 corresponds to the position of the anti-rotation member 270. When the inner tube 120 is displaced relative to the outer tube 110, the anti-rotation element 270 can be displaced in the sliding channel 122. Thereby, the rotation preventing member 270 can provide the effect of preventing the outer tube 110 or the inner tube 120 from rotating. The number of the groove 121, the anti-rotation member 270 and the sliding channel 122 is not particularly limited, and can be adjusted according to different conditions. The anti-rotation element 270 can be a rod-shaped structure, but not limited thereto.

Please refer to Figure 7 and Figure 8 together. FIG. 7 is a perspective view showing that the lifting device 100 of the present invention is installed on a seat tube 300 of a bicycle. Figure 8 An enlarged schematic view of a part of the structure in FIG. 7 is shown. In the embodiment shown in FIG. 7, the bicycle tube body may be a seat tube 300, but it must be noted that the lifting device 100 of the present invention can also be applied to other bicycle tube bodies, not limited to the seat tube 300. In FIG. 7, the lifting device 100 is set on the seat tube 300 of the bicycle so that it can correspond to the height and posture of different riders when riding. In detail, one end of the inner tube 120 of the lifting device 100 is provided with a mounting seat 210, and the bicycle seat cushion 220 can be mounted on the mounting seat 210. When assembling the lifting device 100 and the seat tube 300, please refer to FIG. 1A together, and fit the seat tube 300 in the accommodating space S formed between the first recess 131 of the tightening member 130 and the outer tube 110, and The outer tube 110 and the seat tube 300 are tightly fixed through the tightening member 130. Since the present invention integrates the sealing member 140 (oil seal member) of the lifting device 100 and the tightening member 130, the sealing member 140 is fixed and does not move during the displacement stroke of the inner tube 120 relative to the outer tube 110, so it will not suffer any Obstacles, making the freedom of displacement travel higher Moreover, the lifting device 100 and the bicycle tube body (seat tube 300) can be assembled in a simple manner, which not only provides flexibility in assembly, but also reduces manufacturing costs.

Although the present invention has been disclosed as above by way of implementation, it is not intended to limit the present invention. Anyone who is familiar with this art can make various changes and retouching without departing from the spirit and scope of the present invention, so the protection of the present invention The scope shall be determined by the scope of the attached patent application.

100‧‧‧Lifting device

110‧‧‧Outer tube

120‧‧‧Inner tube

121‧‧‧Groove

122‧‧‧slide channel

132‧‧‧Second recess

140‧‧‧Seal

250‧‧‧First bush

260‧‧‧Second bushing

270‧‧‧Anti-rotation parts

130‧‧‧Tightening

131‧‧‧First recess

S‧‧‧accommodation space

O‧‧‧opening

Claims (14)

A lifting device, which is applied to a bicycle tube body, includes: an outer tube; an inner tube, which is rotatably sleeved in the outer tube; and a tightening member, which is connected to one end of the outer tube, The tightening member includes a first concave portion and a second concave portion, the first concave portion surrounds an outer peripheral surface of the outer tube, and forms an accommodating space with the outer peripheral surface of the outer tube, the tight binding member passes through the The first recess tightens the bicycle tube body in the accommodating space; and a seal is connected to the second recess of the tightening member, and a face of the seal abuts an outer peripheral surface of the inner tube, thereby closing A gap between the inner tube and the outer tube. The lifting device as described in item 1 of the patent application range, wherein the first concave portion of the tightening member has a ring shape, and the first concave portion forms opposite two fixed arms, and each of the two fixed arms has an opening corresponding to it . The lifting device as described in item 2 of the scope of the patent application further includes: a locking member, which is set through the opening on each of the fixing arms, so that the two fixing arms are tightened closer. The lifting device as described in item 1 of the patent application scope, wherein the sealing member is made of an elastic material. The lifting device as described in item 1 of the patent application scope, wherein the sealing member has a ring shape. The lifting device as described in item 1 of the scope of the patent application further includes: a pressing member disposed between the tightening member and the outer tube. The lifting device as described in item 1 of the patent application scope, wherein the bicycle tube body is a tube. The lifting device as described in item 1 of the patent application scope further includes: an inner sleeve displaceably arranged in the inner tube; a piston displaceably arranged in the inner sleeve; an oil passage, provided In the piston; a needle valve is provided on a flow path of the oil passage to open or close the oil passage; and a switch is used to open or close the needle valve, wherein the switch is provided on the inner tube Or the outer tube; Wherein, when the needle valve is opened through the switch, the oil passage is opened, and an oil body of the inner sleeve displaces the piston through the oil passage to change the relative position of the inner pipe and the outer pipe. The lifting device as described in item 8 of the patent application scope further includes: a shock absorber rod, which is movably disposed at one end of the inner sleeve; when the shock absorber rod is stressed, the shock absorber rod is opposite to the inner sleeve The tube displaces and compresses a gas in the inner sleeve, and the inner tube and the outer tube are relatively displaced. The lifting device as described in item 8 of the patent application scope further includes: a control rod, one end of the control rod is connected to one end of the inner sleeve, the other end of the control rod is connected to the outer tube, and the needle valve can The displacement rod is penetrated through the control rod and extends into the piston, thereby opening or closing the oil passage. The lifting device as described in item 1 of the patent application scope, wherein one end of the inner tube further includes: a mounting seat for mounting a bicycle seat cushion. The lifting device as described in item 1 of the patent application scope further includes: A first bushing is disposed on the outer tube and is located relatively below the tightening member; and a second bushing is disposed on the inner tube and is located relatively below the first bushing. The lifting device as described in item 12 of the patent application range, wherein the first bushing includes a plurality of concave portions, and the second bushing includes a plurality of convex portions, each convex portion corresponding to each concave portion, when the inner tube is opposite to the outer tube During displacement, each convex portion passes through each concave portion. The lifting device as described in item 12 of the patent application scope further includes: a groove formed on the inner tube, the groove being located above the second bushing; and an anti-rotation element corresponding to the groove Inner; and a sliding channel formed between the outer tube and the inner tube, and corresponding to the position of the anti-rotation member, when the inner tube is displaced relative to the outer tube, the anti-rotation member is displaced in the sliding channel.

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