CN213948639U - Height adjusting mechanism and bicycle seat post structure - Google Patents

Abstract

The utility model provides a bicycle seat pole structure, it contains top tube, low tube and height adjustment mechanism. The lower pipe is used for movably inserting the upper pipe, and the height adjusting mechanism is arranged in the upper pipe and the lower pipe and comprises a lifting clamping box and an electric driving set. The lifting cassette comprises a tube body and an actuating rod, the actuating rod is inserted in the tube body, and the electric drive group is used for pushing and supporting the actuating rod and comprises a motor. The motor rotates to drive the actuating rod to be pushed, the lifting cassette actuates to allow the upper pipe to lift, and the lifting height of the upper pipe is controlled through the actuating time of the motor. Therefore, the lifting height of the upper pipe can be conveniently controlled.

Description

Height adjusting mechanism and bicycle seat post structure

Technical Field

The present invention relates to a height adjustment mechanism and a bicycle seat post structure, and more particularly, to a height adjustment mechanism and a bicycle seat post structure driven by a motor.

Background

The height adjusting mechanism can be provided with a pipe body, a piston and a valve, fluid such as air, oil or oil gas is contained in the pipe body, and the valve can enable the fluid to flow after being opened so as to change the height of the piston in the pipe body, so that the height adjusting mechanism can be widely applied to the fields of lifting chairs or bicycle seat posts and the like.

In the conventional mechanical operation mode, a wrench is used for driving the height adjusting mechanism, and the wrench is connected with a shifting lever of the height adjusting mechanism through a steel cable, so that the shifting lever can be interlocked to open the valve by operating the wrench. However, when the height adjusting mechanism is used for a bicycle seat post, it is difficult for a user to adjust the height of the seat cushion by operating the wrench with his hand while riding, which is inconvenient.

Therefore, an electric control mode is developed by those skilled in the art, and the electric driving set of the height adjusting mechanism can be controlled by arranging the remote controller on the handle to adjust the height. However, due to the space constraints of the bicycle seat post, it is an object of the related art to improve the structural configuration of the electric drive unit. In addition, how to more effectively control the lifting stroke (height) of the height adjusting mechanism is also one of the problems to be solved by the industry.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a height adjustment mechanism and a bicycle seat post structure, which can achieve the effect of saving labor and space by the structural configuration of an electric driving set, besides the lifting height of a controllable pipe.

According to an embodiment of the present invention, a height adjustment mechanism for driving a pipe to ascend and descend includes an ascending and descending cassette and a motor-driven unit. The lifting cassette comprises a tube body and an actuating rod, and the actuating rod is inserted in the tube body; the electric driving set is used for pushing the actuating rod and comprises a motor, a propping seat and a base, wherein the propping seat is positioned at a first position or a second position along one axial direction of the motor, and the base is positioned between the motor and the propping seat and corresponds to the propping seat. The motor drives one of the propping base and the base to rotate, the propping base and the base rotate relatively and are switched from a first position to a second position so as to push the actuating rod, the lifting cassette acts to allow the pipe fitting to lift, and the lifting height of the pipe fitting is controlled by the actuation time of the motor.

Therefore, the action rod can be pushed through the cooperation of the motor, the abutting seat and the base, the beneficial effects of simple structure and labor saving are achieved, the space configuration is facilitated, and the lifting height of the pipe fitting can be controlled through the action time of the motor.

According to the aforementioned height adjustment mechanism, the electric driving assembly may further include a spring disposed between the abutting base and the base, wherein the spring is deformed to store force when the abutting base is switched from the first position to the second position.

According to the aforementioned height adjustment mechanism, the electric driving assembly may further include a transmission member connected to an output shaft of the motor and including a clamping portion, the clamping portion being embedded in the protruding pillar of the abutting base, wherein the spring is sleeved on the protruding pillar.

According to the aforementioned height adjustment mechanism, the electric driving assembly may further include at least one ball disposed on the at least one groove of the base and in rolling contact with the abutting base.

According to the aforementioned height adjustment mechanism, the abutting base may comprise two first spiral guide surfaces symmetrically arranged, wherein an upper end of one first spiral guide surface is adjacent to a lower end of the other first spiral guide surface; the base can comprise two second spiral guide surfaces which are symmetrically arranged, wherein the upper end of one second spiral guide surface is adjacent to the lower end of the other second spiral guide surface; when the motor rotates to make the propping base and the base rotate relatively, the two first spiral guide surfaces are respectively guided by the two second spiral guide surfaces, so that the propping base climbs to the second position.

According to another embodiment of the present invention, a bicycle seat post structure comprises an upper tube, a lower tube and a height adjusting mechanism. The lower pipe is used for movably inserting the upper pipe, and the height adjusting mechanism is arranged in the upper pipe and the lower pipe and comprises a lifting clamping box and an electric driving set. The lifting cassette comprises a tube body and an actuating rod, the actuating rod is inserted in the tube body, and the electric drive group is used for pushing the actuating rod and comprises a motor, an abutting seat and a base. The propping base is located at a first position or a second position along an axial direction of the motor, and the base is located between the motor and the propping base and corresponds to the propping base. The motor drives one of the propping base and the base to rotate, the propping base and the base rotate relatively and are switched from a first position to a second position so as to push the actuating rod, the lifting cassette acts to allow the upper pipe to lift, and the lifting height of the upper pipe is controlled by the actuating time of the motor.

According to the above-mentioned bicycle seat post structure, wherein the abutting base can comprise a convex column protruding towards the motor, the electric driving set further comprises a spring and a transmission member, the spring is sleeved on the convex column and located between the abutting base and the base, the transmission member is connected with an output shaft of the motor and comprises a clamping portion, and the clamping portion is embedded in the convex column, wherein after the motor rotates, the transmission member is linked with the abutting base to be switched from a first position to a second position, and the spring deforms to store force.

According to the above-mentioned bicycle seat post structure, the abutting seat may comprise two first spiral guide surfaces symmetrically arranged, wherein an upper end of one first spiral guide surface is adjacent to a lower end of the other first spiral guide surface; the base comprises two second spiral guide surfaces which are symmetrically arranged, wherein the upper end of one second spiral guide surface is adjacent to the lower end of the other second spiral guide surface; when the motor rotates to make the propping base and the base rotate relatively, the two first spiral guide surfaces are respectively guided by the two second spiral guide surfaces, so that the propping base climbs to the second position.

According to the above-mentioned bicycle seat post structure, the electric driving unit may further include four balls, the base may further include four grooves respectively recessed in the two second spiral guide surfaces, each groove being for each ball to be disposed, and each ball being in rolling contact with the abutting base.

According to the aforesaid bicycle seat post structure, wherein the upper tube may further comprise an eccentric space and an axial groove, the eccentric space having a first central axis, the first central axis being non-collinear with a second central axis of the upper tube. The axial groove is located on the outer wall of the upper tube. The height adjusting mechanism further comprises a height detecting piece which is arranged in the axial groove and electrically connected with the electric driving set.

According to another embodiment of the present invention, a bicycle seat post structure comprises an upper tube, a lower tube and a height adjusting mechanism. The lower pipe is used for movably inserting the upper pipe, and the height adjusting mechanism is arranged in the upper pipe and the lower pipe and comprises a lifting clamping box and an electric driving set. The lifting cassette comprises a tube body and an actuating rod, the actuating rod is inserted in the tube body, and the electric drive group is used for pushing and supporting the actuating rod and comprises a motor. The motor rotates to drive the actuating rod to be pushed, the lifting cassette actuates to allow the upper pipe to lift, and the lifting height of the upper pipe is controlled through the actuating time of the motor.

Drawings

FIG. 1 is a perspective view of a bicycle seat post structure in accordance with an embodiment of the present invention;

FIG. 2 is an exploded view of the height adjustment mechanism of the embodiment of FIG. 1;

FIG. 3 is a perspective view of the base and the supporting base of the embodiment of FIG. 1;

FIG. 4 is a side cross-sectional view of the bicycle seat post structure of the embodiment of FIG. 1;

FIG. 5 is a partial side cross-sectional view of the bicycle seat post structure of the embodiment of FIG. 1; and

FIG. 6 is a perspective view of the upper tube and the height detecting element of the embodiment shown in FIG. 1.

Detailed Description

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. For the purpose of clarity, numerous implementation details are set forth in the following description. However, the reader should understand that these implementation details should not be used to limit the present invention. That is, in some embodiments of the present invention, these implementation details are not necessary. In order to simplify the drawings, some conventional structures and elements in the prior art are shown in the drawings in a simple schematic manner; and repeated elements will likely be referred to using the same or similar numbers.

In addition, when an element (or a mechanism or a module, etc.) is "connected," "disposed" or "coupled" to another element, it can be directly connected, disposed or coupled to the other element, or it can be indirectly connected, disposed or coupled to the other element, that is, there are other elements between the element and the other element. When an element is explicitly connected, directly disposed, or directly coupled to another element, it is intended that no other element is interposed between the element and the other element. The terms first, second, third, etc. are used merely to describe various elements or components, but the elements/components themselves are not limited, and thus, the first element/component may be alternatively referred to as the second element/component. And the combination of elements/components/mechanisms/modules herein is not a commonly known, conventional or prior art combination in this field, and it is not possible to determine whether the combination relationship is easily accomplished by those skilled in the art based on whether the elements/components/mechanisms/modules themselves are prior art.

Referring to fig. 1 and 2, fig. 1 is a perspective view of a bicycle seat post structure 10 according to an embodiment of the present invention, and fig. 2 is an exploded view of a height adjustment mechanism 300 of the embodiment of fig. 1. The bicycle seat post structure 10 includes a top tube 100, a down tube 200 and a height adjustment mechanism 300. The lower tube 200 is used for the upper tube 100 to be inserted movably, and the height adjusting mechanism 300 is disposed inside the upper tube 100 and the lower tube 200 and includes a lifting cassette 310 and a motor-driven set (not labeled). The lifting cassette 310 includes a tube 311 and an actuating rod 312, the actuating rod 312 is inserted into the tube 311, and the electric driving set is used for pushing the actuating rod 312 and includes a motor 320, a supporting base 350 and a base 340. The abutting seat 350 is located at the first position or the second position along an axial direction I3 (labeled in fig. 4) of the motor 320, and the base 340 is located between the motor 320 and the abutting seat 350 and corresponds to the abutting seat 350. The motor 320 drives one of the abutting base 350 and the base 340 to rotate, the abutting base 350 and the base 340 rotate relatively and are switched from the first position to the second position to push the actuating rod 312, the lifting cassette 310 operates to allow the upper pipe 100 to lift, and the lifting height of the upper pipe 100 is controlled by the actuation time of the motor 320.

Therefore, the lifting height of the upper tube 100 can be effectively controlled by the actuation time of the motor 320, and the supporting seat 350 can be lifted to control the lifting cassette 310 by the cooperation of the supporting seat 350, the base 340 and the motor 320 after the motor 320 rotates, so that the lifting cassette 310 has the advantages of simple structure and labor saving, and the details of the bicycle seat post structure 10 and the height adjusting mechanism 300 will be described in detail later. It should be noted that although the height adjusting mechanism 300 is applied to the bicycle seat post structure 10 in this embodiment, in other embodiments, the height adjusting mechanism can be applied to a rod member with lifting requirement, such as a lifting chair, and is not limited to the above disclosure.

Referring to fig. 3 and fig. 2, in which fig. 3 is a schematic perspective view illustrating the abutting base 350 and the base 340 of the embodiment of fig. 1. As shown in fig. 2, the electromotive driving set may further include a spring 360 located between the abutting seat 350 and the base 340, wherein the spring 360 is deformed and accumulated when the abutting seat 350 is switched from the first position to the second position. The electric driving set may further include a transmission member 380 connected to an output shaft 321 of the motor 320 and including a locking portion 381, the locking portion 381 is engaged with the protruding pillar 354 of the abutting base 350, the protruding pillar 354 may pass through the through hole 344 of the base 340, and the spring 360 is sleeved on the protruding pillar 354. In addition, the electric driving set may further include a cover 330 covering the transmission member 380.

Specifically, the output shaft 321 may be fixed within the transmission member 380, such that the transmission member 380 rotates concentrically with the motor 320. The abutting base 350 may further include an insertion hole 353 located on the protruding pillar 354, the shape of the insertion hole 353 is matched with the clip portion 381, so that the clip portion 381 is rotatably limited in the insertion hole 353, but the clip portion 381 and the insertion hole 353 are allowed to be relatively displaced along an axial direction I3 (shown in fig. 4). Therefore, when the motor 320 rotates, the transmission member 380 can drive the abutting base 350 to rotate, and the abutting base 350 is guided by the base 340 and can be displaced along the axial direction I3 relative to the transmission member 380 to switch from the first position to the second position.

The electric driving set may further comprise at least one ball 370 disposed on the at least one groove 343 of the base 340 and rolling-abutting against the abutting base 350. As shown in fig. 3, the abutting seat 350 may include two first spiral guide surfaces 351 symmetrically arranged, wherein an upper end 3512 of one first spiral guide surface 351 is adjacent to a lower end 3511 of the other first spiral guide surface 351; the base 340 may comprise two second spiral guiding surfaces 341 arranged symmetrically, wherein an upper end 3412 of one second spiral guiding surface 341 is adjacent to a lower end 3411 of the other second spiral guiding surface 341, the number of the balls 370 and the grooves 343 is four, and the four grooves 343 are respectively recessed in the two second spiral guiding surfaces 341. When the motor 320 rotates to make the abutting base 350 and the base 340 rotate relatively, the two first spiral guide surfaces 351 can be guided by the two second spiral guide surfaces 341 respectively, so that the abutting base 350 ascends to the second position.

The abutting base 350 may further include four first planes 352, and the two first planes 352 are connected to an upper end 3512 and a lower end 3511 of a first spiral guide surface 351, respectively. Similarly, the base 340 may further include four second planes 342, and the two second planes 342 are respectively connected to the upper end 3412 and the lower end 3411 of a second spiral guiding surface 341. Of the two balls 370 located on the same second helical guide surface 341, one ball 370 is adjacent to the upper end 3412, and the other ball 370 is adjacent to the lower end 3411.

Referring to fig. 4 and 5 and fig. 3, wherein fig. 4 is a schematic side sectional view of the bicycle seat post structure 10 in the embodiment of fig. 1, fig. 5 is a schematic partial side sectional view of the bicycle seat post structure 10 in the embodiment of fig. 1, and the operation group 400 in fig. 4 is omitted from fig. 1 for simplicity of the drawings, without limiting the present invention. When the upper end 3512 of the first spiral guide surface 351 corresponds to the lower end 3411 of the second spiral guide surface 341, the abutting seat 350 is located at the first position, which can be shown in fig. 4. When the motor 320 rotates, the abutting seat 350 rotates relative to the base 340, the first spiral guide surface 351 is guided by the second spiral guide surface 341 to make the abutting seat 350 ascend along the axial direction I3, the upper end 3512 of the first spiral guide surface 351 corresponds to the upper end 3412 of the second spiral guide surface 341, and the first plane 352 corresponds to the second plane 342 adjacent to the upper end 3412, so that the abutting seat 350 is located at the second position, as shown in fig. 5.

Thus, the actuating rod 312 is also pushed from the lower position to the upper position, and the valve of the elevator cartridge 310 is opened, so that the upper pipe 100 can be lifted or lowered.

When the motor 320 continues to rotate, the first plane 352 exceeds the second plane 342, and the abutting seat 350 is pulled back to the first position along the axial direction I3 by the restoring force of the spring 360. When the actuating rod 312 is lowered from the high position to the low position, the valve is closed and the relative height of the upper pipe 100 is fixed. If the motor 320 is still rotating, the abutting base 350 will rise and fall repeatedly, and the actuating rod 312 will be pushed repeatedly, so that the upper tube 100 can adjust the height relative to the lower tube 200 continuously until the motor 320 stops, and the control of the actuating time of the motor 320 can control the rising and falling height of the upper tube 100.

Referring to fig. 6 and fig. 4, in which fig. 6 is a schematic perspective view illustrating the upper tube 100 and the height detector 390 according to the embodiment of fig. 1. The upper tube 100 may further include an eccentric space S1 and an axial groove 110, the eccentric space S1 has a first central axis I1, the first central axis I1 is not collinear with the second central axis I2 of the upper tube 100, and in the present invention, a centroid is calculated by a peripheral wall (neglecting part of the unevenness) surrounding the space or an outer wall (neglecting part of the unevenness) of the tube body, and an axis passing through the centroid is defined as the central axis.

The axial groove 110 may be located on the outer wall of the upper tube 100, and the height adjusting mechanism 300 further includes a height detecting element 390 disposed in the axial groove 110 and electrically connected to the electric driving unit. As shown in fig. 4 and 6, the eccentric space S1 is not concentric with the upper tube 100, which can facilitate the provision of the axial groove 110 on the outer wall of the upper tube 100.

The height detector 390 may be, for example, an optical sensor, such as an optical ruler, capable of sensing the lifting of the upper tube 100 relative to the lower tube 200, i.e., sensing the lifting of the lifting cassette 310. The height detecting part 390 may be electrically connected to a controller (not shown) to feed back information, and the controller may stop the motor 320 according to the information, so as to achieve the advantage of controlling or memorizing the stroke and to control the lifting height more accurately. In other embodiments, the upper tube may also include a concentric space and an axial groove, but not limited thereto.

The bicycle seat post structure 10 may further include a control assembly 400 for controlling the operation of the height adjustment mechanism 300 and including a signal receiving terminal 410 and a signal transmitting terminal 420, wherein the signal transmitting terminal 420 transmits a control signal, and then the control signal is connected to the signal receiving terminal 410 and transmitted to the controller, so as to control the motor 320 to start and stop. The present invention may also be used with wired control and is not limited by the above disclosure.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

[ notation ] to show

10-bicycle seat post structure

100 upper pipe

110 axial groove

200 lower tube

300 height adjusting mechanism

310 lifting cassette

311 tube body

312 as an actuating rod

320 motor

321 output shaft

330, cover body

340 base

341 second spiral guide surface

3411 lower end

3412 upper end

342 the second plane

343 groove

344 through the hole

350 against base

351 the first spiral guide surface

3511 lower part

3512 upper end

352 first plane

353, embedding hole

354 convex column

360: spring

370 ball

380 transmission piece

381 clamping part

390 height detection piece

400 manipulation group

410 signal receiving terminal

420 signal transmitting terminal

I1 first center axis

I2 second center axis

I3 axial direction

And S1, eccentric space.

Claims (11)

1. The utility model provides a height adjustment mechanism for drive pipe fitting lift and its characterized in that contains:

the lifting cassette comprises a pipe body and an actuating rod, and the actuating rod is inserted in the pipe body; and

the electric driving set is used for pushing the actuating rod and comprises:

a motor;

an abutting seat, which is positioned at a first position or a second position along an axial direction of the motor; and

the base is positioned between the motor and the abutting seat and corresponds to the abutting seat;

the motor drives one of the abutting seat and the base to rotate, the abutting seat and the base rotate relatively and are switched from the first position to the second position to push the actuating rod, the lifting cassette acts to allow the pipe fitting to lift, and the lifting height of the pipe fitting is controlled through the actuation time of the motor.

2. The height adjustment mechanism of claim 1, wherein the motorized drive set further comprises:

the spring is positioned between the abutting seat and the base;

when the abutting seat is switched from the first position to the second position, the spring deforms to store force.

3. The height adjustment mechanism of claim 2, wherein the motorized drive assembly further comprises:

a transmission member connected to an output shaft of the motor and including a clamping portion engaged with the boss of the abutting base;

wherein, the spring is sleeved on the convex column.

4. The height adjustment mechanism of claim 1, wherein the motorized drive set further comprises:

and the ball is arranged on the at least one groove of the base and is in rolling contact with the abutting seat.

5. The height adjusting mechanism of claim 1, wherein the abutting base comprises two first spiral guide surfaces symmetrically arranged, wherein an upper end of one of the first spiral guide surfaces is adjacent to a lower end of the other first spiral guide surface; the base comprises two second spiral guide surfaces which are symmetrically arranged, wherein the upper end of one second spiral guide surface is adjacent to the lower end of the other second spiral guide surface; when the motor rotates to make the propping base and the base rotate relatively, the two first spiral guide surfaces are respectively guided by the two second spiral guide surfaces, so that the propping base climbs to the second position.

6. A bicycle seat post structure, comprising:

feeding a pipe;

the lower pipe is used for movably inserting the upper pipe; and

height adjustment mechanism sets up in this upper tube and this low tube and contains:

the lifting cassette comprises a pipe body and an actuating rod, and the actuating rod is inserted in the pipe body; and

the electric driving set is used for pushing the actuating rod and comprises:

a motor;

an abutting seat, which is positioned at a first position or a second position along an axial direction of the motor; and

the base is positioned between the motor and the abutting seat and corresponds to the abutting seat;

the motor drives one of the abutting seat and the base to rotate, the abutting seat and the base rotate relatively and are switched from the first position to the second position to push the actuating rod, the lifting cassette actuates to allow the upper pipe to lift, and the lifting height of the upper pipe is controlled through the actuation time of the motor.

7. The bicycle seat post structure of claim 6, wherein the abutting seat comprises a convex pillar protruding toward the motor, the electric driving unit further comprises:

the spring is sleeved on the convex column and positioned between the abutting seat and the base; and

a transmission member connected to an output shaft of the motor and including a locking portion engaged with the boss;

when the motor rotates, the transmission member is linked with the abutting base to be switched from the first position to the second position, and the spring deforms to store force.

8. The bicycle seat post structure of claim 6, wherein the abutting seat comprises two first spiral guide surfaces symmetrically arranged, wherein the upper end of one first spiral guide surface is adjacent to the lower end of the other first spiral guide surface; the base comprises two second spiral guide surfaces which are symmetrically arranged, wherein the upper end of one second spiral guide surface is adjacent to the lower end of the other second spiral guide surface; when the motor rotates to make the propping base and the base rotate relatively, the two first spiral guide surfaces are respectively guided by the two second spiral guide surfaces, so that the propping base climbs to the second position.

9. The bicycle seat post structure of claim 8, wherein the electric driving assembly further comprises four balls, the base further comprises four grooves respectively recessed in the two second spiral guide surfaces, each of the grooves is provided for each of the balls, and each of the balls is in rolling contact with the abutting seat.

10. The bicycle seat post structure of claim 6,

the upper tube further comprises:

an eccentric space having a first central axis that is non-collinear with a second central axis of the upper tubular; and

the axial groove is positioned on the outer wall of the upper pipe; and is

The height adjustment mechanism further comprises:

and the height detection piece is arranged in the axial groove and is electrically connected with the electric drive group.

11. A bicycle seat post structure, comprising:

feeding a pipe;

the lower pipe is used for movably inserting the upper pipe; and

height adjustment mechanism sets up in this upper tube and this low tube and contains:

the lifting cassette comprises a pipe body and an actuating rod, and the actuating rod is inserted in the pipe body; and

an electric driving set for pushing the actuating rod and including a motor;

the motor rotates to drive the actuating rod to be pushed, the lifting cassette actuates to allow the upper pipe to lift, and the lifting height of the upper pipe is controlled through the actuating time of the motor.

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