Seat tube structure of electric bicycle

Abstract

The utility model relates to the technical field of electric bicycles, in particular to an electric bicycle seat tube structure which comprises a seat tube arranged in a seat mounting tube on a bicycle frame. The seat pipe comprises a mounting branch pipe at the upper end, and a seat mounting and fixing structure is arranged at the upper end of the mounting branch pipe and used for mounting and arranging a seat; the seat tube further comprises a middle mounting tube, and a tube cover is detachably connected to the lower end of the mounting tube; a mounting space is formed in the mounting pipe and is used for mounting and arranging a storage battery; and a threading hole is further formed in the seat tube, so that a power supply wire harness of the storage battery can penetrate out of the threading hole. The seat has the characteristics that the battery can be hidden and arranged, the battery can be more conveniently disassembled and assembled, and the angle of the seat can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycles, in particular to a seat tube structure of an electric bicycle. Background Art

[0002] Electric bicycles are a combination of human and electric power. They look almost like bicycles and still retain the pedal design of bicycles. Electric bicycles are equipped with batteries and motors. The batteries provide electricity to drive the motors and provide power for the wheels to move forward.

[0003] In the existing electric bicycle structure, a mounting frame is usually set on the rear side of the seat tube on the frame to install and arrange the battery. This arrangement makes the overall structure complicated, affecting the overall appearance; and it is not convenient to disassemble and assemble the battery. In addition, in the existing structure, the seat installation and fixing structure at the upper end of the seat tube is not reasonably designed, which makes it inconvenient to adjust the front and rear tilt angle of the seat, and the tilt angle limit of the seat is not reliable enough.

[0004] Therefore, how to design an electric bicycle seat tube structure that can hide the battery, facilitate battery disassembly and assembly, and facilitate adjustment of the seat angle has become a technical problem to be solved by technical personnel in this field. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to design an electric bicycle seat tube structure that can conceal the battery, facilitate battery disassembly and assembly, and facilitate adjustment of the seat angle.

[0006] To achieve the above-mentioned purpose, the utility model provides a seat tube structure of an electric bicycle, including a seat tube installed and arranged in a seat mounting tube on a frame; the seat tube includes a mounting branch tube at an upper end, and a seat mounting fixing structure is provided at the upper end of the mounting branch tube and is used for installing and arranging the seat; it is characterized in that the seat tube also includes a mounting tube in a middle portion, and a tube cover is detachably connected and provided at the lower end of the mounting tube; the internal space of the mounting tube forms an installation space and is used for installing and arranging a battery; and a threading hole is also provided on the seat tube for the power supply harness of the battery to pass through to the outside.

[0007] Thus, in the above-mentioned electric bicycle seat tube structure, an installation space for installing and arranging the battery is formed in the installation tube in the middle of the seat tube; the battery can be installed and arranged in the installation space formed in the installation tube, and the entire battery is hidden and arranged to avoid exposure of the battery, making the entire structure more compact and more beautiful. When the battery needs to be disassembled, the tube cover at the lower end of the installation tube can be removed, and then the battery can be disassembled, which makes it more convenient to disassemble and assemble the battery.

[0008] As an optimization, the tube cover includes a tube cover body with an overall hemispherical shell structure design at the lower end, the upper end of the tube cover body is open, and the open end of the tube cover body has a connecting tube that is upwardly arranged and formed as one piece, an external thread is arranged on the connecting tube, and an internal thread is arranged on the inner circumference of the lower end of the mounting tube, and the connecting tube thread is connected to the inside of the lower end of the mounting tube.

[0009] In this way, the structural design of the pipe cover is simpler and more reasonable. Moreover, the pipe cover and the mounting pipe are connected by threaded matching, which makes it more convenient to disassemble and assemble the two.

[0010] As an optimization, a plurality of inner grooves evenly distributed along the horizontal circumferential direction are arranged on the outer peripheral surface of the tube cover body; a local position on the surface of the tube cover body is drawn upward and a supporting boss is formed inside the tube cover body and supported on the lower end surface of the battery in the installation tube.

[0011] In this way, by providing the inner groove, the structural strength of the tube cover can be increased on the one hand, and a fulcrum can be provided for more convenient disassembly on the other hand. The support boss provided can better support and limit the battery.

[0012] As an optimization, the mounting branch pipe includes a branch pipe plug-in section at the lower end which is inserted and installed inside the upper end of the mounting pipe; it also includes a branch pipe middle section which is in the middle and is integrally formed at the upper end of the branch pipe plug-in section; the upper end of the branch pipe middle section is integrally formed with a branch pipe inclined section which is arranged as a whole inclined toward the upper rear side, and a mounting block is also integrally formed at the upper end of the branch pipe inclined section, and the seat mounting fixing structure is arranged on the mounting block.

[0013] In this way, the structural design of the mounting branch pipe is simpler and more reasonable, and it is more convenient to install the seat and form mounting support for the seat.

[0014] As an optimization, the seat mounting and fixing structure includes a mating groove with an overall arc-shaped structural design set on the mounting block, a mating block is set in the mating groove, and the lower surface of the mating block is arched downward in an arc-shaped structural design; and a number of limiting teeth are respectively set on the bottom surface of the mating groove and the lower surface of the mating block and matched together; a clamping block is set on the mating block, and clamping grooves are respectively set in pairs on both sides of the relative surfaces of the mating block and the clamping block and are used for the seat fixing rod under the seat to be inserted; screw holes and adjusting fixing screws are set on the lower surface of the mounting block, and the threaded rod ends of the adjusting fixing screws pass through the first and second makeshift holes on the mating block and the clamping block in turn and extend to above the clamping block, and a fastening block is set above the clamping block, and the thread of the adjusting fixing screw is matched and set in the threaded hole of the fastening block.

[0015] In this way, the fixed structure design of the seat is simpler and more reasonable, and the seat can be better installed and fixed; and through the cooperation of the limiting teeth between the matching block and the mounting block, the inclination angle of the seat can be more conveniently adjusted, so as to better adapt to the riding of different people.

[0016] As an optimization, long strip-shaped protrusions are respectively arranged on the front and rear sides of the upper surface of the matching block, and clamping grooves are respectively arranged at both ends of the protrusions.

[0017] In this way, the structural design of the matching block is more reasonable, and it is more convenient to check whether the fixing rod on the seat is installed in place.

[0018] As an optimization, the first clearance hole and the second clearance hole are both designed as long strip holes.

[0019] In this way, the design is more reasonable and the seat tilt angle can be adjusted more conveniently.

[0020] As an optimization, the lower surface of the fastening block is designed as a downwardly arched arc-shaped structure; a first deformation groove is arranged on the end face of the mating block and runs through the left and right directions; a plurality of second deformation grooves are arranged on the end face of the clamping block and run through the front and back directions; and a hand-held operating groove for inserting fingers is arranged on the rear end face of the mounting block.

[0021] In this way, the structural design of the fastening block is more reasonable; and by designing the first deformation groove and the second deformation groove, the matching block and the pressing block have a certain deformation ability after being stressed, so as to better install and fix the seat.

[0022] As an optimization, a mounting opening is provided on the rear side of the middle section of the branch pipe, and a cover plate is provided on the mounting opening and is detachable by screws.

[0023] In this way, by setting the installation opening, a position for installing the rear taillight is reserved, and the design is more reasonable.

[0024] As an optimization, the threading hole is provided on the front side of the inclined section of the branch pipe.

[0025] In this way, the position layout of the threading holes is more reasonable.

[0026] In summary, in the above structure, the battery is hidden so as to make the whole structure more compact; the seat tube structure is designed to facilitate the disassembly and assembly of the battery; and the seat mounting and fixing structure is designed to make it easier to adjust the seat angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the electric bicycle seat tube structure in a specific implementation manner of the utility model.

[0028] Figure 2 yes Figure 1 A partial enlarged schematic diagram of position A in the middle.

[0029] Figure 3 yes Figure 1 Schematic diagram of the structure after rotation by an angle.

[0030] Figure 4 yes Figure 1 Schematic top view of .

[0031] Figure 5 yes Figure 1 Schematic diagram of the left side.

[0032] Figure 6 yes Figure 1 Schematic diagram of the right side.

[0033] Figure 7 yes Figure 6 BB cross-sectional view.

[0034] Figure 8 yes Figure 1 Schematic diagram of the main view.

[0035] Fig. 9 yes Figure 1 Schematic diagram of the structure of the tube cover. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] like Figures 1 to 9 The invention discloses a seat tube structure for an electric bicycle, comprising a seat tube installed in a seat mounting tube on a frame; the seat tube comprises a mounting branch tube 1 at an upper end, a seat mounting fixing structure is provided at the upper end of the mounting branch tube and is used for mounting and arranging the seat; the seat tube also comprises a mounting tube 2 in a middle portion, a tube cover 3 is detachably connected and provided at the lower end of the mounting tube; an installation space is formed in the internal space of the mounting tube and is used for mounting and arranging a battery 4; and a threading hole 5 is also provided on the seat tube for passing a power supply harness of the battery in the installation space to the outside.

[0038] Thus, in the above-mentioned electric bicycle seat tube structure, an installation space for installing and arranging the battery is formed in the installation tube in the middle of the seat tube; the battery can be installed and arranged in the installation space formed in the installation tube, and the entire battery is hidden and arranged to avoid exposure of the battery, making the entire structure more compact and more beautiful. When the battery needs to be disassembled, the tube cover at the lower end of the installation tube can be removed, and then the battery can be disassembled, which makes it more convenient to disassemble and assemble the battery.

[0039] In this specific embodiment, the tube cover includes a tube cover body 6 with an overall hemispherical shell structure design at the lower end, the upper end of the tube cover body is open, and the open end of the tube cover body has a connecting tube 7 that is upwardly arranged and formed in one piece, an external thread is arranged on the connecting tube, and an internal thread is arranged on the inner circumference of the lower end of the mounting tube, and the connecting tube thread is connected and arranged inside the lower end of the mounting tube.

[0040] In this way, the structural design of the pipe cover is simpler and more reasonable. Moreover, the pipe cover and the mounting pipe are connected by threaded matching, which makes it more convenient to disassemble and assemble the two.

[0041] In this specific embodiment, a plurality of inner grooves 8 evenly distributed along the horizontal circumferential direction are arranged on the outer peripheral surface of the tube cover body; a local position on the surface of the tube cover body is drawn upward and a supporting boss 9 is formed inside the tube cover body and supported on the lower end surface of the battery in the installation tube.

[0042] In this way, by providing the inner groove, the structural strength of the tube cover can be increased on the one hand, and a fulcrum can be provided for more convenient disassembly on the other hand. The support boss provided can better support and limit the battery.

[0043] In this specific embodiment, the mounting branch pipe includes a branch pipe plug-in section 10 at the lower end which is inserted and installed inside the upper end of the mounting pipe; it also includes a branch pipe middle section 11 in the middle which is integrally formed and arranged at the upper end of the branch pipe plug-in section; the upper end of the branch pipe middle section is integrally formed with a branch pipe inclined section 12 which is arranged as a whole inclined toward the upper rear side, and a mounting block 13 is also integrally formed at the upper end of the branch pipe inclined section, and the seat mounting fixing structure is arranged on the mounting block.

[0044] In this way, the structural design of the mounting branch pipe is simpler and more reasonable, and it is more convenient to install the seat and form mounting support for the seat.

[0045] In this specific embodiment, the seat installation and fixing structure includes a matching groove with an overall arc-shaped structural design set on the mounting block, a matching block 14 is set in the matching groove, and the lower surface of the matching block is arched downward in an arc-shaped structural design; and a plurality of limiting teeth are respectively set on the bottom surface of the matching groove and the lower surface of the matching block and matched together; a clamping block 15 is set on the matching block, and clamping grooves 16 are respectively set in pairs on both sides of the relative surfaces of the matching block and the clamping block and are used for the seat fixing rod under the seat to be inserted; screw holes are set on the lower surface of the mounting block and an adjusting fixing screw 17 is set, and the threaded rod ends of the adjusting fixing screw pass through the first and second clearance holes on the matching block and the clamping block in turn and extend to above the clamping block, and a fastening block 18 is set above the clamping block, and the thread of the adjusting fixing screw is matched and set in the threaded hole of the fastening block.

[0046] In this way, the fixed structure design of the seat is simpler and more reasonable, and the seat can be better installed and fixed; and through the cooperation of the limiting teeth between the matching block and the mounting block, the inclination angle of the seat can be more conveniently adjusted, so as to better adapt to the riding of different people.

[0047] In this specific embodiment, long strip-shaped protrusions 19 are respectively arranged on the front and rear sides of the upper surface of the matching block, and pressing grooves are respectively arranged at both ends of the protrusions.

[0048] In this way, the structural design of the matching block is more reasonable, and it is more convenient to check whether the fixing rod on the seat is installed in place.

[0049] In this specific implementation manner, the first clearance hole and the second clearance hole are both designed as long strip holes.

[0050] In this way, the design is more reasonable and the seat tilt angle can be adjusted more conveniently.

[0051] In this specific embodiment, the lower surface of the fastening block is designed as a downwardly arched arc structure; a first deformation groove 20 is arranged on the end face of the matching block and runs through the left and right directions; a plurality of second deformation grooves 21 are arranged on the end face of the clamping block and run through the front and rear directions; and an operating hand-held groove 24 for inserting fingers is arranged on the rear end face of the mounting block.

[0052] In this way, the structural design of the fastening block is more reasonable; and by designing the first deformation groove and the second deformation groove, the matching block and the pressing block have a certain deformation ability after being stressed, so as to better install and fix the seat.

[0053] In this specific embodiment, a mounting opening 22 is provided at the rear side of the middle section of the branch pipe, and a cover plate 23 is provided on the mounting opening and is detachable by screws.

[0054] In this way, by setting the installation opening, a position for installing the rear taillight is reserved, and the design is more reasonable.

[0055] In this specific implementation manner, the threading hole is provided on the front side of the inclined section of the branch pipe.

[0056] In this way, the position layout of the threading holes is more reasonable.

[0057] In summary, in the above structure, the battery is hidden so as to make the whole structure more compact; the seat tube structure is designed to facilitate the disassembly and assembly of the battery; and the seat mounting and fixing structure is designed to make it easier to adjust the seat angle.

[0058] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An electric bicycle seat tube structure, comprising a seat tube installed in a seat mounting tube on a frame; the seat tube comprises an upper mounting branch tube, the upper end of which is provided with a seat mounting fixing structure and used for mounting and arranging a seat; characterized in that: The seat tube also includes a mounting tube in the middle, with a tube cover detachably connected to the lower end of the mounting tube; the internal space of the mounting tube forms an installation space and is used to install and arrange the battery; and a threading hole is also provided on the seat tube for the power supply harness of the battery to pass through to the outside.

2. The electric bicycle seat tube structure according to claim 1, characterized in that: The tube cover includes a tube cover body with an overall hemispherical shell structure design at the lower end, the upper end of the tube cover body is open, and the open end of the tube cover body has a connecting tube that is upwardly arranged and formed in one piece, the connecting tube is provided with an external thread, the inner circumferential surface of the lower end of the mounting tube is provided with an internal thread, and the connecting tube thread is connected and arranged inside the lower end of the mounting tube.

3. The electric bicycle seat tube structure according to claim 2, characterized in that: A plurality of inner grooves evenly distributed along the horizontal circumferential direction are arranged on the outer peripheral surface of the tube cover; a local position of the surface of the tube cover is drawn upward and a supporting boss is formed inside the tube cover and supported on the lower end surface of the battery in the installation tube.

4. The electric bicycle seat tube structure according to claim 1, characterized in that: The mounting branch pipe includes a branch pipe plug-in section at the lower end which is inserted and installed inside the upper end of the mounting pipe; and also includes a branch pipe middle section which is in the middle and is integrally formed and arranged at the upper end of the branch pipe plug-in section; the upper end of the branch pipe middle section is integrally formed with a branch pipe inclined section which is arranged as a whole inclined toward the upper rear side, and a mounting block is also integrally formed at the upper end of the branch pipe inclined section, and the seat mounting fixing structure is arranged on the mounting block.

5. The electric bicycle seat tube structure as claimed in claim 4, characterized in that: The seat installation and fixing structure includes a matching groove with an overall arc-shaped structural design set on the mounting block, a matching block is set in the matching groove, and the lower surface of the matching block is arched downward with an arc-shaped structural design; and a plurality of limiting teeth are respectively set on the bottom surface of the matching groove and the lower surface of the matching block and matched together; a clamping block is set on the matching block, and clamping grooves are respectively set in pairs on both sides of the relative surfaces of the matching block and the clamping block and are used for the seat fixing rod under the seat to be inserted; screw holes are set on the lower surface of the mounting block and an adjusting fixing screw is set, and the threaded rod ends of the adjusting fixing screw pass through the first and second clearance holes on the matching block and the clamping block in turn and extend to above the clamping block, and a fastening block is set above the clamping block, and the thread of the adjusting fixing screw is matched and set in the threaded hole of the fastening block.

6. The electric bicycle seat tube structure according to claim 5, characterized in that: The front and rear sides of the upper surface of the matching block are respectively provided with long strip-shaped protrusions, and the two ends of the protrusions are respectively provided with pressing grooves.

7. The electric bicycle seat tube structure according to claim 5, characterized in that: The first clearance hole and the second clearance hole are both designed as long strip holes.

8. The electric bicycle seat tube structure according to claim 5, characterized in that: The lower surface of the fastening block is designed with a downwardly arched arc structure; a first deformation groove is arranged on the end surface of the matching block and runs through the left and right directions; a plurality of second deformation grooves are arranged on the end surface of the clamping block and run through the front and rear directions; and a hand-held operating groove for inserting fingers is arranged on the rear end surface of the mounting block.

9. The electric bicycle seat tube structure according to claim 4, characterized in that: A mounting opening is arranged at the rear side of the middle section of the branch pipe, and a cover plate is detachably arranged on the mounting opening through screws.

10. The electric bicycle seat tube structure according to claim 4, characterized in that: The threading hole is arranged on the front side of the inclined section of the branch pipe.

Images