Battery car seat height adjusting structure

Abstract

The utility model relates to the technical field of battery car seat, and disclose a battery car seat height adjusting structure, including fixed pipe, the top of fixed pipe is fixed with the connecting pipe, the inner wall sliding connection of fixed pipe has the bottom, the top of bottom is fixed with screw rod, the top of screw rod is fixed with the cushion, the outer surface of connecting pipe, screw rod installs protection subassembly and limiting component, this battery car seat height adjusting structure, when the height of cushion is adjusted, the compression spring no.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle seat technology, specifically to an electric vehicle seat height adjustment structure. Background Technology

[0002] Electric bicycles, also known as "electric vehicles," are purely electric vehicles powered by batteries and driven by electric motors (DC, AC, series, etc.). They have become very popular in my country in recent years. Most existing small electric bicycles have height-adjustable seats.

[0003] According to a public notice (Announcement No.: CN222291880U) of an electric bicycle seat height adjustment structure, when the worm gear rotates, the worm wheel meshing with the worm also rotates. Driven by the worm wheel, the movable tube begins to rotate. Through the interaction between the internal thread on the movable tube and the threaded rod, the threaded rod can move vertically inside the connecting tube. Through the transmission of the support rod, the seat cushion also moves accordingly. The internal thread on the movable tube can limit the threaded rod, thus preventing the seat cushion from shifting during use. When the second bolt and nut are fixed together, the clamp can hold the support rod, further increasing the stability of the fixed seat cushion. This adjustment structure is simple, easy to operate, and allows for convenient seat height adjustment. The adjusted seat has good positioning stability, effectively preventing seat shifting during use and improving the practicality of the electric bicycle seat.

[0004] However, in the aforementioned application, the continuous vibrations accompanying long-term riding, or unexpected external impacts or accidental contact, may cause the worm gear driving the lifting mechanism or the rotating block connected to it to loosen. Once the preload of the locking mechanism decreases, slight displacement may occur between the transmission pairs. Under the load (rider's weight), this can easily cause the saddle to slip unexpectedly and suddenly. This unexpected slip not only affects riding comfort and experience but also poses a serious safety hazard, potentially causing muscle strains, loss of balance, or even falls and injuries to the rider, thus posing a potential threat to driving safety. Summary of the Invention

[0005] The purpose of this utility model is to provide a height adjustment structure for electric vehicle seats to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a height adjustment structure for an electric bicycle seat, including a fixing tube, a connecting tube fixed to the top of the fixing tube, a base plate slidably connected to the inner wall of the fixing tube, a screw fixed to the top of the base plate, a seat cushion fixed to the top of the screw, and a protective component and a limiting component installed on the outer surfaces of the connecting tube and the screw. The protective component is used to improve the stability of the seat cushion after adjustment, and the limiting component is used to prevent accidental contact of the surface from affecting stability. The protection component includes: The fixed housing is used to stabilize the internal mechanisms. A circular ring is used to drive the synchronous radial movement of various mechanisms. Limit block, the limit block is used in conjunction with the limit slot to achieve unidirectional limit; The release mechanism is used to reset each mechanism.

[0007] Preferably, the fixing shell is fixed to the top of the connecting pipe. A ring is rotatably connected to the inner wall of the fixing shell. A connecting hole is formed on the outer surface of the ring. A short rod abuts against the inner wall of the connecting hole. A limit block is fixed to the outer surface of the short rod. The connecting hole is arc-shaped. Through the cooperation between the arc-shaped connecting hole and the short rod, the rotational motion of the ring is converted into the radial linear motion of the short rod and the limit block. When the ring rotates, the short rod slides along the arc-shaped connecting hole, forcing all short rods and limit blocks to move synchronously and uniformly towards the center or centrifugally, ensuring that multiple limit blocks can simultaneously engage or disengage from the limit grooves on the screw.

[0008] Preferably, a spring is fixed to the outer surface of the limiting block. The end of the spring away from the limiting block is fixed to the inner wall of the fixed shell. The end of the limiting block away from the spring penetrates the fixed shell, and the limiting block is slidably connected to the fixed shell. A limiting groove is formed on the outer surface of the screw. When the screw moves axially and the inclined surface at the end of the limiting block contacts the edge of the limiting groove, the inclined surface is subjected to force, causing the limiting block to compress the spring and retract radially, allowing the screw to pass through in one direction (upward). When the limiting block is aligned with the limiting groove, the restoring force of the spring pushes the limiting block to quickly lock into the groove, forming an effective one-way locking to prevent the seat cushion from falling unexpectedly.

[0009] Preferably, the release mechanism includes a connecting block fixed to the outer surface of the ring. One end of the connecting block, away from the ring, penetrates the fixing shell. A pull rod is fixed to the outer surface of the connecting block. A stabilizing column is slidably connected to the bottom inner side of the pull rod. A second spring is fixed to the top of the stabilizing column, and the top of the second spring is fixed to the top inner side of the stabilizing column. By pulling the pull rod, the connecting block and the ring can be rotated, thereby driving all the limiting blocks to move radially outward synchronously against the pressure of the first spring through the connecting hole and the short rod, disengaging them from the limiting groove of the screw. The stabilizing column, the second spring, and the pull rod form an internal sliding pair, providing a temporary positioning function for the pull rod, ensuring that the limiting state can be stably maintained in the released position when adjusting the seat cushion downwards, without requiring continuous force from the user.

[0010] Preferably, a long rod is fixed to the top of the stabilizing column, the top of which passes through the pull rod and is slidably connected to it. A connecting ring is fixed to the outer surface of the connecting tube, and two sets of stabilizing grooves are formed on the top of the connecting ring. The bottom of the stabilizing column is arc-shaped, and the end of the limiting block away from the first spring is set as an inclined surface. The arc-shaped design of the bottom of the stabilizing column allows it to smoothly slide out of one stabilizing groove when the pull rod is pulled. The second spring is compressed and stores energy during the movement of the stabilizing column. When the pull rod moves to the position corresponding to the other set of stabilizing grooves, the restoring force of the second spring pushes the stabilizing column so that its bottom is locked into the new stabilizing groove, thus temporarily fixing the position of the pull rod.

[0011] Preferably, the limiting component includes a groove formed at the top of the pull rod. A cylinder is rotatably connected to the inner wall of the groove. A groove is formed on the outer surface of the cylinder. A retaining plate is slidably connected to the inner wall of the groove. A spring is fixed to the outer surface of the retaining plate. The end of the spring away from the retaining plate is fixed to the inner wall of the groove. A retaining groove is formed on the inner wall of the groove. A baffle is fixed to the top of the cylinder. The cross-section of the end of the retaining plate away from the spring is triangular. Rotating the baffle can drive the cylinder to rotate within the groove. When the baffle is rotated, the retaining plate, under the action of the spring, engages in the retaining groove on the inner wall of the groove, preventing the cylinder from rotating accidentally.

[0012] Preferably, a worm gear is rotatably connected to the inner wall of the connecting pipe, the screw passes through the worm gear, and the worm gear is threadedly connected to the screw. A worm is rotatably connected to the inner wall of the connecting pipe, and the worm meshes with the worm gear. A knob is rotatably connected to the outer surface of the connecting pipe, the output shaft of the knob passes through the connecting pipe, and the output shaft of the knob is fixed to the outer surface of the worm. Rotating the knob drives the worm to rotate, and the worm drives the worm gear to rotate. Since the worm gear and the screw are threadedly connected, the rotation of the worm gear is converted into the axial movement of the screw, thereby driving the seat cushion to rise and fall. The self-locking characteristic of the worm gear prevents the seat cushion from sinking due to its own weight when the knob is turned without external force. Together with the limiting component, it forms a double guarantee, ensuring the stability of the seat cushion at any height position.

[0013] Compared with the prior art, this utility model provides a height adjustment structure for electric bicycle seats, which has the following advantages: 1. The height adjustment structure of this electric bicycle seat, through its protective components, ensures that when the seat height is adjusted, the screw rises, causing the limit block to be compressed back into the fixed shell by the inclined plane, compressing the first spring. This compression, along with the short rod, drives the ring to rotate, causing all limit blocks to move synchronously. When the limit block aligns with the limit groove, the first spring pushes the limit block into the groove, achieving one-way locking through planar contact, preventing the seat from falling unexpectedly and improving seat stability. To lower the seat, pulling the lever causes the limit block to disengage from the limit groove via the ring, allowing the knob to be rotated in reverse to lower the seat.

[0014] 2. The electric scooter's seat height adjustment structure, through a set limiting component, allows the baffle to be rotated to disengage from the long rod. The locking plate, via a spring, engages with the slot to prevent the cylinder from rotating. At this point, the knob can be operated for adjustment. After adjustment, rotating the baffle back to align with the top of the long rod restricts the movement of the lever, further enhancing stability. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of some of the protective components and limiting components of this utility model; Figure 4 This is a front view structural diagram of some of the protective components and limiting components of this utility model; Figure 5 This is a bottom view of some of the protective components and limiting components of this utility model; Figure 6 This is a front view schematic diagram of the connecting ring and stabilizing groove of this utility model; Figure 7 This is a cross-sectional exploded view of some of the protective components and limiting components of this utility model.

[0016] In the diagram: 1. Fixed tube; 2. Connecting tube; 3. Base plate; 4. Screw; 5. Worm gear; 6. Cushion; 7. Worm; 10. Knob; 8. Protective component; 80. Fixed shell; 81. Ring; 82. Connecting hole; 83. Short rod; 84. Limiting block; 85. Spring 1; 86. Limiting groove; 87. Release component; 870. Connecting block; 871. Pull rod; 872. Stabilizing column; 873. Spring 2; 874. Long rod; 875. Connecting ring; 876. Stabilizing groove; 9. Limiting component; 90. Groove; 91. Cylinder; 92. Slide groove; 93. Clamping plate; 94. Spring 3; 95. Clamping slot; 96. Baffle. Detailed Implementation

[0017] like Figures 1-7 As shown, this utility model provides a technical solution: a height adjustment structure for an electric bicycle seat, including a fixed tube 1, a connecting tube 2 fixed to the top of the fixed tube 1, a base plate 3 slidably connected to the inner wall of the fixed tube 1, a screw 4 fixed to the top of the base plate 3, a seat cushion 6 fixed to the top of the screw 4, and a protective component 8 and a limiting component 9 installed on the outer surfaces of the connecting tube 2 and the screw 4. The protective component 8 is used to improve the stability of the seat cushion 6 after adjustment, and the limiting component 9 is used to prevent accidental contact of the surface from affecting stability. The protective component 8 includes: a fixed shell 80, a ring 81, a connecting hole 82, a short rod 83, a limiting block 84, a first spring 85, a limiting groove 86, a release component 87, a connecting block 870, a pull rod 871, a stabilizing column 872, a second spring 873, a long rod 874, a connecting ring 875, and a stabilizing groove 876.

[0018] A fixed housing 80 is fixed to the top of the connecting pipe 2. A ring 81 is rotatably connected to the inner wall of the fixed housing 80. A connecting hole 82 is opened on the outer surface of the ring 81. A short rod 83 abuts against the inner wall of the connecting hole 82. A limit block 84 is fixed on the outer surface of the short rod 83. The connecting hole 82 is arc-shaped. A spring 85 is fixed on the outer surface of the limit block 84. The end of the spring 85 away from the limit block 84 is fixed to the inner wall of the fixed housing 80. The end of the limit block 84 away from the spring 85 passes through the fixed housing 80, and the limit block 84 is slidably connected to the fixed housing 80. A limit groove 86 is opened on the outer surface of the screw 4. The release component 87 includes a connecting block 870. The connecting block 870 is fixed to the outer surface of the ring 81. The end of the connecting block 870 away from the ring 81 passes through and is fixed. A pull rod 871 is fixed to the outer surface of the shell 80 and the connecting block 870. A stabilizing column 872 is slidably connected to the bottom inner side of the pull rod 871. A second spring 873 is fixed to the top of the stabilizing column 872. The top of the second spring 873 is fixed to the top inner side of the stabilizing column 872. A long rod 874 is fixed to the top of the stabilizing column 872. The top of the long rod 874 passes through the pull rod 871 and is slidably connected to the pull rod 871. A connecting ring 875 is fixed to the outer surface of the connecting tube 2. Two sets of stabilizing grooves 876 are opened on the top of the connecting ring 875. The bottom of the stabilizing column 872 is set as an arc. The end of the limiting block 84 away from the first spring 85 is set as an inclined surface. Rotating the knob 10 drives the screw 4 to rise through the worm gear 7 and the worm wheel 5, thereby adjusting the height of the seat cushion 6. When rising, the limiting block 84 is compressed back into the fixed shell 80 by the inclined plane, compressing the first spring 85, and driving the ring 81 to rotate through the short rod 83, so that all the limiting blocks 84 move synchronously. When the limiting block 84 is aligned with the limiting groove 86, the first spring 85 pushes the limiting block 84 into the groove, realizing one-way locking through planar contact to prevent the seat cushion 6 from falling unexpectedly. When lowering, pulling the lever 871, the ring 81 makes the limiting block 84 disengage from the limiting groove 86, and the knob 10 can be reversed to lower the seat cushion 6. When the lever 871 moves, the stabilizing column 872 is compressed back and compresses the second spring 873; when aligned with the adjacent stabilizing groove 876, it automatically springs back and locks, without needing to continuously pull the lever 871.

[0019] The limiting component 9 includes a groove 90, which is located at the top of the pull rod 871. A cylinder 91 is rotatably connected to the inner wall of the groove 90. A groove 92 is formed on the outer surface of the cylinder 91. A retaining plate 93 is slidably connected to the inner wall of the groove 92. A spring 94 is fixed to the outer surface of the retaining plate 93. The end of the spring 94 away from the retaining plate 93 is fixed to the inner wall of the groove 92. A retaining groove 95 is formed on the inner wall of the groove 90. A baffle 96 is fixed to the top of the cylinder 91. The cross-section of the end of the retaining plate 93 away from the spring 94 is triangular. Rotating the baffle 96 causes it to disengage from the long rod 874, simultaneously causing the cylinder 91 to rotate. During rotation, the retaining plate 93 is compressed back into the groove 92 by the inner wall of the retaining groove 95, and the spring 94 is compressed. When the retaining plate 93 is aligned with the retaining groove 95, the spring 94 pushes the retaining plate 93 to reset and engage, preventing the cylinder 91 from rotating. At this time, the knob 10 can be operated for adjustment. After adjustment, rotate the baffle 96 back to fit against the top of the long rod 874 to restrict the movement of the pull rod 871 and enhance overall stability.

[0020] A worm gear 5 is rotatably connected to the inner wall of the connecting pipe 2. A screw 4 passes through the worm gear 5 and is threadedly connected to the screw 4. A worm 7 is rotatably connected to the inner wall of the connecting pipe 2 and meshes with the worm gear 5. A knob 10 is rotatably connected to the outer surface of the connecting pipe 2. The output shaft of the knob 10 passes through the connecting pipe 2 and is fixed to the outer surface of the worm 7. Rotating the knob 10 will drive the worm 7 and the worm gear 5 to rotate. At this time, the screw 4, the base plate 3, and the seat cushion 6 will move upward, and the height can be adjusted.

[0021] When the height of the seat cushion 6 needs to be adjusted, rotate the baffle 96 to disengage it from the long rod 874. Simultaneously, as the baffle 96 rotates, the cylinder 91 rotates synchronously, and the outer surface of the locking plate 93 abuts against the inner wall of the locking groove 95. The locking plate 93 moves into the sliding groove 92, compressing the spring 3 94. When the locking plate 93 is parallel to the locking groove 95, the spring 3 94 releases, thus resetting the locking plate 93 into the locking groove 95, preventing the cylinder 91 from rotating. At this point, rotating the knob 10 will drive the worm gear 7 and worm wheel 5 to rotate. At this time, the screw 4, base plate 3, and seat cushion 6... Moving the screw 4 upwards adjusts the height. Simultaneously, as the screw 4 moves upwards, the inner wall of the limiting groove 86 abuts against the inclined surface of the limiting block 84, causing the limiting block 84 to move into the fixed housing 80. The spring 85 is compressed, and the limiting block 84 simultaneously drives the short rod 83 to move synchronously. The outer surface of the short rod 83 abuts against the inner wall of the connecting hole 82, causing the ring 81 to rotate. This allows all the short rods 83 and the limiting block 84 to move radially synchronously, improving the consistency of their movements. When the limiting block 84 is parallel to the limiting groove 86, the spring 85 is released, causing all mechanisms to reset, and the limiting block 84 moves into the fixed housing 80. When the seat cushion 6 is inserted into the limiting groove 86, the flat side of the limiting block 84 abuts against the inner wall of the limiting groove 86, which can unidirectionally limit the screw 4 and the seat cushion 6, further improving the stability of the seat cushion 6 and preventing accidental downward movement that could cause injury. When it is necessary to lower the seat cushion 6, pull the lever 871, and the connecting block 870 will drive the ring 81 to rotate synchronously, which will cause the limiting block 84 to disengage from the limiting groove 86. At this time, the knob 10 can be flipped to lower the seat cushion 6. At the same time, when the lever 871 moves, the outer surface of the stabilizing column 872 abuts against the inner wall of the stabilizing groove 876, which can keep the stabilizing column... When 872 moves into the pull rod 871, the second spring 873 is compressed, and at the same time, the stabilizing column 872 causes the long rod 874 to protrude. When the position of the stabilizing column 872 is parallel to another set of stabilizing grooves 876, the second spring 873 is released, which can drive the stabilizing column 872 to reset and enter the stabilizing groove 876. There is no need for personnel to hold the pull rod 871 for a long time. When the adjustment is completed, pull the pull rod 871 back and rotate the baffle 96 so that the outer surface of the baffle 96 abuts and fits against the top of the long rod 874. At this time, the pull rod 871 can no longer be pulled, further improving its stability.

[0022] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A height adjustment structure for an electric bicycle seat, comprising a fixing tube (1), characterized in that: The top of the fixed tube (1) is fixed with a connecting tube (2), the inner wall of the fixed tube (1) is slidably connected with a base plate (3), the top of the base plate (3) is fixed with a screw (4), the top of the screw (4) is fixed with a seat cushion (6), the outer surfaces of the connecting tube (2) and the screw (4) are equipped with a protective component (8) and a limiting component (9). The protective component (8) is used to improve the stability of the seat cushion (6) after adjustment, and the limiting component (9) is used to prevent the surface from being accidentally touched and affecting the stability. The protection component (8) includes: The fixed housing (80) is used to stabilize the internal mechanisms. The circular ring (81) is used to drive the synchronous radial movement of each mechanism; Limiting block (84) is used to cooperate with limiting groove (86) to achieve unidirectional limiting; Release component (87) is used to reset each mechanism.

2. The electric vehicle seat height adjustment structure according to claim 1, characterized in that: The fixed shell (80) is fixed to the top of the connecting pipe (2). The inner wall of the fixed shell (80) is rotatably connected to a ring (81). The outer surface of the ring (81) is provided with a connecting hole (82). The inner wall of the connecting hole (82) abuts against a short rod (83). The outer surface of the short rod (83) is fixed with a limit block (84). The connecting hole (82) is set to be arc-shaped.

3. The electric vehicle seat height adjustment structure according to claim 2, characterized in that: A spring (85) is fixed to the outer surface of the limiting block (84). The end of the spring (85) away from the limiting block (84) is fixed to the inner wall of the fixed shell (80). The end of the limiting block (84) away from the spring (85) passes through the fixed shell (80). The limiting block (84) and the fixed shell (80) are slidably connected. A limiting groove (86) is opened on the outer surface of the screw (4).

4. The electric vehicle seat height adjustment structure according to claim 2, characterized in that: The release component (87) includes a connecting block (870), which is fixed to the outer surface of the ring (81). One end of the connecting block (870) away from the ring (81) passes through the fixed shell (80). A pull rod (871) is fixed to the outer surface of the connecting block (870). A stabilizing column (872) is slidably connected to the bottom inner side of the pull rod (871). A second spring (873) is fixed to the top of the stabilizing column (872). The top of the second spring (873) is fixed to the top inner side of the stabilizing column (872).

5. The electric vehicle seat height adjustment structure according to claim 4, characterized in that: The top of the stabilizing column (872) is fixed with a long rod (874), the top of the long rod (874) passes through the pull rod (871), and the long rod (874) and the pull rod (871) are slidably connected. The outer surface of the connecting tube (2) is fixed with a connecting ring (875), and the top of the connecting ring (875) is provided with two sets of stabilizing grooves (876). The bottom of the stabilizing column (872) is set as an arc shape, and the end of the limiting block (84) away from the spring (85) is set as an inclined surface.

6. The electric vehicle seat height adjustment structure according to claim 4, characterized in that: The limiting component (9) includes a groove (90) which is opened on the top of the pull rod (871). A cylinder (91) is rotatably connected to the inner wall of the groove (90). A sliding groove (92) is opened on the outer surface of the cylinder (91). A retaining plate (93) is slidably connected to the inner wall of the sliding groove (92). A spring three (94) is fixed on the outer surface of the retaining plate (93). One end of the spring three (94) away from the retaining plate (93) is fixed on the inner wall of the sliding groove (92). A retaining groove (95) is opened on the inner wall of the groove (90). A baffle (96) is fixed on the top of the cylinder (91). The cross-section of the end of the retaining plate (93) away from the spring three (94) is triangular.

7. The electric vehicle seat height adjustment structure according to claim 1, characterized in that: The inner wall of the connecting pipe (2) is rotatably connected to a worm gear (5), the screw (4) passes through the worm gear (5), and the worm gear (5) is threadedly connected to the screw (4). The inner wall of the connecting pipe (2) is rotatably connected to a worm (7), the worm (7) meshes with the worm gear (5), and the outer surface of the connecting pipe (2) is rotatably connected to a knob (10). The output shaft of the knob (10) passes through the connecting pipe (2), and the output shaft of the knob (10) is fixed on the outer surface of the worm (7).

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