Bicycle seat tube lifting device and bicycle seat tube

Abstract

The utility model discloses a bicycle seat tube lifting device and bicycle seat tube, bicycle seat tube includes seat tube body and lifting device, and the bottom of seat tube body is connected with the top of lifting device, and the casing of lifting device is the cylindrical cavity cooperation with seat tube body, and the cavity is equipped with guiding mechanism, pressing mechanism and drive mechanism, and pressing mechanism moves upward along guiding mechanism under the drive of drive mechanism, and is abutted with the air valve switch of bicycle seat tube bottom, and the lifting device of the present application adopts screw rod drive, can more stable open close air valve, and the internal structure is more compact, can have space for damping, heat dissipation, and the lifting process is more labor saving, more stable, thereby increases device life, and maintenance installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of bicycle seat post lifting technology, and in particular to a bicycle seat post lifting device and a bicycle seat post. Background Technology

[0002] The bicycle seatpost is the mechanism that connects the saddle and the frame. Adjusting the seatpost allows for saddle height adjustment to meet the needs of riders of different heights and usage habits. Traditional seatpost fixing methods typically use clips, requiring the user to manually adjust the seatpost to the appropriate height and then lock it in place, which is inconvenient for riding. Existing technologies also use manual cable-operated seatpost fixing methods. Pulling the cable actuates levers and wedges inside the seatpost, triggering the air valve to adjust the seatpost's height by inflating or deflating it. However, this type of structure uses abrupt changes for adjustment, subjecting the internal components to repeated instantaneous impacts. This places higher demands on materials and connection structures to maintain a certain lifespan. Furthermore, this type of adjustment method requires significant radial space, necessitates a battery for power connection, further increases space requirements, and necessitates a custom frame design to accommodate additional space. Summary of the Invention

[0003] To address the shortcomings of existing technologies and achieve a more effortless, compact, and stable lifting mechanism for bicycle seatposts, while extending the lifespan of the lifting device, improving vibration damping and heat dissipation, and enhancing waterproofing, this utility model adopts the following technical solution: A bicycle seatpost lifting device is used to adapt to a gas valve switch installed inside the seatpost. The device includes a housing, which is a cylindrical cavity that mates with the bicycle seatpost. The cavity is provided with a guide mechanism, a pressing mechanism, and a driving mechanism. Under the drive of the driving mechanism, the pressing mechanism moves along the guide mechanism to press the gas valve switch.

[0004] Furthermore, the pressing mechanism includes a slider and a lead screw. The top of the slider corresponds to the air valve switch, one side of the slider is configured to cooperate with the guide mechanism, and a threaded hole at the bottom of the slider is fitted onto the thread of the lead screw, allowing the slider to move axially along the lead screw. The lead screw is configured to cooperate with the drive mechanism. Through the threaded engagement between the slider and the lead screw, the lead screw rotates under the drive of the drive device, causing the slider to move along the guide mechanism, thereby enabling the slider to move stably and uniformly to press the air valve switch. Compared with the lever or ramp sliding structure commonly used in the prior art, this can extend the service life of the component structure.

[0005] Furthermore, the inner wall of the housing is provided with an inner fixing layer, and a limiting platform is provided in the middle of the inner fixing layer, dividing the cavity into an upper cavity and a lower cavity. A fixing hole is provided on one side of the upper cavity, and the guide mechanism is configured to cooperate with the fixing hole. The drive mechanism includes a reducer and a motor. The reducer is fixedly installed in the lower cavity, and the motor is fixedly connected to the reducer. The motor shaft is connected to the lead screw through the reducer. The lead screw passes through the limiting platform from the lower cavity and connects to the slider in the upper cavity. The drive mechanism is suspended from the housing through the inner fixing layer. This suspended design increases the space at the bottom of the housing for vibration damping, heat dissipation, and accommodating external circuits, while improving the stability of the various structures inside the housing. Moreover, placing the motor shaft and the smaller reducer in the lower cavity and the larger motor below the inner fixing layer improves space utilization.

[0006] Furthermore, an axially arranged circuit board is provided inside the housing, and a radially mounted connecting plate is provided on the lower side of the circuit board, with the upper part of the connecting plate connected to the motor.

[0007] Furthermore, the circuit board has a planar structure. On the side of the inner fixing layer, there is a flat section for placing the circuit board. As the inner fixing layer of the housing, its shape is also a cylindrical cavity. Therefore, there is a gap between the side of the inner fixing layer and the plane on which the circuit board is placed, which can play a certain role in shock absorption and heat dissipation for the circuit board. Since there is a connecting plate below the circuit board, the gap can also be connected with the space below the connecting plate, further improving the shock absorption and heat dissipation effect.

[0008] Furthermore, a magnet is provided on the side of the slider, and a Hall sensor that cooperates with the magnet is provided on the circuit board. The magnet and the Hall sensor are in the same radial direction. The magnet moves up and down with the slider. When it moves into the range of the Hall sensor, it is identified, thereby determining that it has moved into place, and the judgment signal is transmitted through the circuit board.

[0009] Furthermore, the top of the slider is provided with a push valve part, and one side of the slider is provided with a guide groove. The top of the housing is provided with a valve switch hole. The guide mechanism is a guide post set on one side of the housing. The push valve part is configured to cooperate with the valve switch that extends into the valve switch hole. The guide post is configured to cooperate with the guide groove. The push valve switch of the bicycle seat post passes through the valve switch hole and enters the interior of the housing. The drive mechanism drives the lead screw to rotate, which drives the slider to move upward along the guide post, so that the push valve part abuts against the push valve switch, thereby triggering the valve to open.

[0010] Furthermore, the thread inside the slider adopts a multi-start thread, and the corresponding lead screw also adopts a multi-start lead screw structure, and its lead is increased, or the helix angle is increased (>60 degrees), thereby reducing the static friction force that the motor drive needs to overcome and reducing the self-locking force of the thread.

[0011] Furthermore, a bottom cover is sealed at the bottom of the housing; the bottom cover is connected to the bottom of the housing or to the inner fixing layer. The bottom cover is provided with an electrical outlet and a sealing mechanism around the electrical outlet; this is used to improve the sealing effect of the inner ring at the bottom, thereby preventing water from entering the inside of the bottom cover from below. The circuit opening inside the bottom cover is surrounded by a glue groove for holding glue. The circuit board is connected to the external circuit through the circuit opening via a connecting wire. The retaining ring is used to secure the connecting wire and prevent it from being accidentally pulled out or broken when the seat post is removed. Glue is applied inside the glue groove to ensure a sealing effect, thereby ensuring the stability of the circuit connection inside the bicycle seat post lifting device.

[0012] And / or, a sealing mechanism is provided on the outer circumferential surface of the bottom cover. This prevents water from entering the inside of the bottom cover from below.

[0013] A bicycle seatpost includes a seatpost body and a lifting device. The bottom of the seatpost body is connected to the top of the lifting device. An air valve switch located at the center of the bottom of the seatpost body abuts against a pressing mechanism of the lifting device that moves up and down.

[0014] The advantages and beneficial effects of this utility model are as follows: The present invention provides a bicycle seatpost lifting device and a bicycle seatpost, which replaces the existing wire-type structure with a screw structure, making the lifting structure more compact and leaving some space for vibration reduction and heat dissipation. The lifting process is more labor-saving and more stable, and has a better waterproof effect, thereby increasing the service life of the device and making maintenance and installation convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device in this utility model.

[0016] Figure 2a This is a bottom view of the shell in this utility model.

[0017] Figure 2b This is a cross-sectional view of the shell in this utility model.

[0018] Figure 3a This is a top view of the inner fixing layer in this utility model.

[0019] Figure 3b This is a cross-sectional view of the inner fixing layer in this utility model.

[0020] Figure 4 This is a schematic diagram of the slider in this utility model.

[0021] Figure 5 This is a schematic diagram of the circuit board structure in this utility model.

[0022] Figure 6 This is a detailed cross-sectional view of the bottom of the device in this utility model.

[0023] Figure 7 This is a cross-sectional view of another implementation.

[0024] Figure 8 This is a schematic diagram of the external connection structure of the device in this utility model.

[0025] The components are as follows: 1. Air valve switch, 2. Slider, 3. Magnet, 4. Hall sensor, 5. Reducer, 6. Circuit board, 7. Motor, 8. Connecting plate, 9. Inner fixing layer, 10. Motor shaft, 11. Housing, 12. Lead screw, 13. Guide column, 14. Seat tube housing, 15. Air valve switch hole, 16. Motor clearance groove, 17. Fixing hole, 18. Push valve part, 19. Magnet mounting hole, 20. Guide groove, 21. Threaded hole, 22. Fixing ring, 23. Glue groove, 24. Housing bottom cover, 25. Control button, 26. Battery and electronic control unit, 27. Sealing mechanism one, 28. Sealing mechanism two. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. However, this does not limit the present invention to the scope of the described embodiments.

[0027] like Figure 1 As shown, a bicycle seatpost lifting device includes a housing 11, an inner fixing layer 9, a guide post 13, a slider 2, a lead screw 12, a reducer 5, a motor 7, a circuit board 6, a power supply, and a controller.

[0028] like Figure 2a , Figure 2b As shown, the housing 11 is installed on the lower side of the seat tube housing 14. The housing 11 has a thread on its upper side, which is connected to the thread on the lower side of the seat tube housing 14 (or by welding or other connection methods). The inner top of the housing 11 is provided with a valve switch hole 15. After being connected to the seat tube housing 14, the push-button switch of the valve passes through the valve switch hole 15, and the bottom is lower than the valve switch hole 15, so that the raised slider 2 can touch it. The valve switch hole 15 is smaller than the upper surface of the slider 2, thereby ensuring the top limit.

[0029] The inner fixing layer 9 is bolted to the inner side of the housing 11, such as... Figure 3a , Figure 3bAs shown, the inner fixing layer 9 is provided with fixing holes 17 for fixing the guide post 13. The number of fixing holes 17 can be one or more, ensuring that the guide post 13 and the fixing holes 17 match. Three threaded holes are provided on one side of the fixing hole 17 for fixing the reducer 5, and two threaded holes on the outer periphery are used for connecting the inner fixing layer 9 to the housing 11. In this design, a planetary reducer is preferably used. Planetary reducers are conventional existing technology, and any reducer can be selected as long as its dimensions and transmission ratio meet the requirements of this design.

[0030] like Figure 4 As shown, the slider 2 is provided with a guide groove 20 and a magnet mounting hole 19. The magnet mounting hole 19 is located on the side of the slider 2, and the magnet 3 is located inside the magnet mounting hole 19. The guide groove 20 is sleeved on the guide post 13. The bottom of the slider 2 is provided with a threaded hole 21 sleeved on the outside of the threaded screw 12. The slider 2 is not located on the central axis of the seat tube (therefore, the push valve part 18 of the slider 2 is cam-shaped to ensure contact with the air valve switch 1). Space is left on the side for mounting the circuit board 6. The circuit board 6 is provided with a Hall sensor 4. The magnet 3 and the Hall sensor 4 are in the same radial direction. The magnet 3 can be detected when it moves into the range of the Hall sensor 4. This is used to determine whether the slider 2 has moved to the required position. After reaching the position, a signal is output to the motor to stop its rotation, thereby stopping the movement of the slider 2.

[0031] The lead screw 12 and the slider 2 are connected by a thread, preferably a four-start thread, and the lead of the four-start thread is greater than that of a conventional thread. This design has the advantage over existing conventional threads in that it avoids the situation where, after a conventional thread reverses to its final position, the slider 2 fails to stop in time due to the motor 7 or other reasons, causing it to become overly tightened with the lead screw 12. This could lead to excessive friction preventing it from moving upwards properly when rotating forward again, potentially causing damage to the motor 7. The use of a four-start thread with an increased thread angle between the slider 2 and the lead screw 12 avoids this problem.

[0032] The motor shaft 10 of the motor 7 is connected to the reducer 5 and is connected to the slider 2 through the lead screw 12. The reducer 5 is fixed together with the motor 7, so that the entire motor 7 and the reducer 5 are connected and installed in the housing 11 through the inner fixing layer 9, thereby suspending the entire inner fixing layer 9, the motor 7 and the reducer 5, leaving a certain space at the bottom of the housing 11 for accommodating the required circuit 9.

[0033] Preferably, in order to allow the motor 7 to be better arranged on the side without affecting the installation of the circuit board 6 on the side, a motor clearance groove 16 is provided at the bottom of the housing 11 to ensure the side positioning of the motor 7 without reducing the overall strength of the housing 11.

[0034] like Figure 5As shown, the circuit board 6 has a connecting plate 8 at the bottom, which is fixed to the bottom of the motor 7. The circuit board 6 has circuits, including power lines and data lines, which are connected to the battery and the electronic control unit 26 (ECU, Electronic Control Unit) respectively. Since the circuit board 6 is in the form of a flat plate, the arc-shaped space on its rear side and the space below it can assist in heat dissipation to a certain extent and provide a buffer space for the large amount of vibration during bicycle use, thereby ensuring the safe use of the circuit board 6.

[0035] like Figure 6 As shown, the bottom of the housing 11 is provided with a bottom cover 24, which is connected to the housing 11 by welding or screwing to ensure a seal and prevent water and dust from entering the bottom and affecting the internal electronic components.

[0036] Preferably, the bottom circuit is provided with a metal retaining ring 22 and a glue groove 23. The metal retaining ring 22 makes the circuit stable and will not be accidentally pulled out or broken when the seat tube is removed. The glue groove 23 is used for applying glue to ensure the effect of fixing the circuit and sealing the circuit.

[0037] like Figure 7 As shown, in another embodiment, a bottom cover 24 is sealed at the bottom of the housing 11; the bottom cover 24 is connected to the inner fixing layer 9. The bottom cover 24 has a circuit port and a sealing mechanism 27 around the circuit port to improve the sealing effect of the inner ring at the bottom, thereby preventing water from entering the inside of the bottom cover 24 from below. A glue groove 23 is provided around the circuit port on the inner side of the bottom cover 24 to hold glue. The circuit board 6 is connected to the external circuit through the circuit port via a connecting wire. A retaining ring 22 is used to secure the connecting wire, preventing it from being accidentally pulled out or broken when the seat post is removed. Glue is applied inside the glue groove 23 to ensure a sealing effect, thereby ensuring the stability of the circuit connection within the bicycle seat post lifting device. And / or, a second sealing mechanism 28 is provided on the outer circumference of the bottom cover 24. This prevents water from entering the inside of the bottom cover 24 from below. In other words, waterproofing is added to both the inner and outer sides of the bottom cover 24, preventing water from entering when the bicycle passes through flooded areas, thus affecting the normal operation of the motor 7, circuit board 6, etc. The sealing mechanism 27 and the second sealing mechanism 28 can use common sealing mechanisms such as O-rings or C-rings.

[0038] The method of using the lifting device includes the following steps: Step 1: A control button 25 connected to the lifting device is provided on the bicycle handlebars or other parts, such as... Figure 8As shown (of course, according to other preferred settings, the control button 25 can also be set in other positions on the vehicle), in the initial unadjusted state of the bicycle, the slider 2 does not move. At this time, the magnet 3 is within the recognition range of the Hall sensor 4. When it is necessary to adjust the seat post to rise or fall, the operation of continuously pressing the control button 25 sends a command to start the motor 7 to rotate. The motor 7 drives the slider 2 to move upward, triggering the air valve switch 1. After the slider 2 reaches the displacement limit, it will no longer move upward. At this time, because the air valve switch 1 is open, high-pressure gas enters the seat post. If the external pressure is less than the air pressure (such as when the rider leans lightly against the saddle or leaves the saddle), the telescopic tube section inside the seat post will be raised. If the downward pressure is greater than the lifting force of the air pressure (such as when the rider sits on the saddle), the seat post will be lowered, thereby realizing the raising and lowering adjustment operation of the seat post.

[0039] Step 2: When resetting, releasing the control button 25 will issue a reverse command. At this time, the program will control the motor 7 to reverse and return the slider 2 to its original position. When the Hall sensor 4 senses the magnet 3, it will send a signal to stop the reverse rotation of the motor 7.

[0040] Due to the cooperation between the guide groove 20 and the guide post 13 of the slider 2, the slider 2 will only move vertically, thereby achieving the control effect.

[0041] This utility model is not limited to the above-described embodiments. Any changes made to its shape or structure fall within the protection scope of this utility model. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A bicycle seatpost lifting device for adapting to a gas valve switch (1) disposed inside the seatpost, comprising a housing (11), characterized in that, The housing (11) is a cylindrical cavity that mates with the bicycle seat post. The cavity is equipped with a guide mechanism, a pressing mechanism, and a driving mechanism. Under the drive of the driving mechanism, the pressing mechanism moves along the guide mechanism and presses the air valve switch (1). The pressing mechanism includes a slider (2) and a lead screw (12). The top of the slider (2) corresponds to the air valve switch (1), and one side of the slider (2) is fitted with the guide mechanism. The threaded hole (21) at the bottom of the slider (2) is fitted onto the thread of the lead screw (12). Driven by the lead screw (12), the slider (12) moves axially along the lead screw (12). The lead screw (12) is fitted with the driving mechanism.

2. The bicycle seatpost lifting device according to claim 1, characterized in that, The inner wall of the housing (11) is provided with an inner fixing layer (9), and a limiting platform is provided in the middle of the inner fixing layer (9), which divides the cavity into an upper cavity and a lower cavity. The upper cavity is provided with at least one fixing hole (17). The guide mechanism is configured to cooperate with the fixing hole (17). The drive mechanism includes a reducer (5) and a motor (7). The reducer (5) is fixedly installed in the lower cavity. The motor (7) is fixedly connected to the reducer (5). The motor shaft (10) of the motor (7) is connected to the lead screw (12) through the reducer (5). The lead screw (12) passes through the limiting platform from the lower cavity and is connected to the slider (2) in the upper cavity.

3. A bicycle seatpost lifting device according to claim 2, characterized in that, An axially arranged circuit board (6) is provided inside the housing (11), and a radially mounted connecting plate (8) is provided on the lower side of the circuit board (6). The upper part of the connecting plate (8) is connected to the motor (7).

4. A bicycle seatpost lifting device according to claim 3, characterized in that, The circuit board (6) has a planar structure. On the side of the inner fixing layer (9), there is a plane for placing the circuit board (6).

5. A bicycle seatpost lifting device according to claim 3, characterized in that, A magnet (3) is provided on the slider (2), and a Hall sensor (4) for identifying the magnet (3) is provided on the circuit board.

6. A bicycle seatpost lifting device according to claim 1, characterized in that, The top of the slider (2) is provided with a push valve part (18), and the side of the slider (2) is provided with a guide groove (20). The top of the housing (11) is provided with a valve switch hole (15). The guide mechanism is a guide post (13) provided on the side of the housing (11). The push valve part (18) is configured to cooperate with the valve switch (1) extending into the valve switch hole (15). The guide post (13) is configured to cooperate with the guide groove (20).

7. A bicycle seatpost lifting device according to claim 1, characterized in that, The thread inside the slider (2) is a multi-start thread, and the corresponding lead screw (12) also adopts a multi-start lead screw structure.

8. A bicycle seatpost lifting device according to claim 1, characterized in that, A bottom cover (24) is provided at the bottom of the housing (11) for sealing purposes; the bottom cover (24) is connected to the bottom of the housing (11); The bottom cover (24) is provided with an electrical port and a sealing mechanism (27) around the electrical port; The circuit port on the inner side of the bottom cover (24) is provided with a glue groove (23), which is used to place glue; And / or, a sealing mechanism two (28) is provided on the outer peripheral surface of the bottom cover (24).

9. A bicycle seatpost, comprising a seatpost body and a lifting device, characterized in that, The lifting device is a bicycle seatpost lifting device according to any one of claims 1 to 8, wherein the bottom of the seatpost body is connected to the top of the lifting device, and the air valve switch (1) provided at the bottom of the seatpost body abuts against the pressing mechanism of the lifting device that moves up and down.

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