Fixing structure for base block in lower pipe of bicycle

Abstract

The utility model provides a base block fixing structure in a bicycle lower tube, which relates to the technical field of bicycles, and comprises a lower tube, an upper base block and a lower base block, the upper base block and the lower base block are respectively arranged at two ends in the lower tube, an inner cavity is arranged in the side wall of the top in the lower tube, a guide rod is arranged on one side in the inner cavity, and the guide rod is connected with the upper base block and the lower base block. A rail groove communicated with the inner cavity is formed in the upper portion of the interior of the lower pipe, the upper base block and the lower base block are both movably arranged on the rail groove, the top of the upper base block and the top of the lower base block are each provided with a guide block and a screw block, and the guide blocks penetrate through the rail groove and are movably installed with the guide rods; a double-thread lead screw is rotationally arranged on one side of the interior of the inner cavity. According to the utility model, an adjustable structure is adopted, the double-thread screw rod is driven to rotate by rotating the knob and matching with the linkage assembly, and the upper base block and the lower base block can be driven to move out of the cavities at the two ends along the guide rod and the track groove and reach the position of a top cover opening under the action of the screw block, so that the maintenance and overhaul are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a base block fixing structure in a bicycle down tube. Background Art

[0002] An electric bicycle is a vehicle that uses batteries as auxiliary energy and is equipped with a motor, controller, battery, turning handle, brake handle and other operating components and a display instrument system on the basis of an ordinary bicycle. The battery box on the electric bicycle is fixed by installing a base fixing block inside the lower tube of the electric bicycle, and the base is installed through the base fixing block. The base is used for battery installation and power supply, and then the lower tube is locked;

[0003] In the prior art, for example, the authorization announcement number CN 219277702 U discloses a "base block fixing structure in a bicycle down tube", and specifically discloses: an upper base fixing block and a lower base fixing block are fixed in a bicycle down tube by a first positioning assembly and a second positioning assembly, so that a battery box is fixed in the bicycle down tube, and the upper base fixing block and the lower base fixing block are welded to the bicycle down tube before heat treatment, so that the bicycle down tube is not affected by the heat treatment, will not be deformed, and will not affect the locking of the battery box; however, in the above technology, the upper base fixing block and the lower base fixing block are fixed in the cavities at both ends of the bicycle down tube by a first positioning assembly and a second positioning assembly, and are welded and locked to fix, and such base fixing block is very troublesome to operate during maintenance because it is retracted in the cavity, and there is a certain tolerance in the installation of the battery and the base, and the above technology cannot fine-tune the position of the base fixing block, and it is difficult to adapt to installations under different tolerances. Therefore, the utility model proposes a base block fixing structure in a bicycle down tube to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes a base block fixing structure inside the lower tube of a bicycle. The base block fixing structure inside the lower tube of the bicycle drives a double-threaded screw to rotate by turning a knob and cooperating with a linkage assembly. The upper base block and the lower base block can be driven to move along the guide rod and the track groove by utilizing the action of the screw block, and move out of the cavities at both ends to the top cover position, which is convenient for maintenance and inspection.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a base block fixing structure in a bicycle lower tube, comprising a lower tube, an upper base block, and a lower base block, wherein the upper base block and the lower base block are respectively arranged at two ends of the lower tube, an inner cavity is arranged in the side wall at the top of the lower tube, and a guide rod is arranged on one side of the inner cavity, a track groove communicating with the inner cavity is arranged above the lower tube, the upper base block and the lower base block are both movably arranged on the track groove, and the tops of the upper base block and the lower base block are both provided with guide blocks and screw blocks, and the guide blocks pass through the track groove and are movably installed with the guide rod;

[0006] A double-threaded screw is rotatably provided on one side of the inner cavity, and the screw blocks of the upper base block and the lower base block pass through the track grooves and are respectively adapted to the threads at both ends of the double-threaded screw. An opening is provided at one end of one side of the lower tube, and a knob is rotatably provided in the opening, and the knob drives the double-threaded screw to rotate through a linkage assembly.

[0007] Further improvements are: a linkage chamber is provided inside the lower tube at one end of the inner cavity, the linkage assembly includes a rotating shaft and a first bevel gear, the rotating shaft is rotatably arranged inside the linkage chamber, and the rotating shaft is connected to the knob, the first bevel gear is arranged on the rotating shaft, one end of the double-threaded screw rod extends into the linkage chamber, and one end of the double-threaded screw rod is provided with a second bevel gear matched with the first bevel gear.

[0008] A further improvement is that a hexagonal hole is provided on the outer side of the knob, and the hexagonal hole is compatible with a hexagonal wrench.

[0009] A further improvement is that a top cover opening is provided at the bottom of the lower tube, and the top cover opening is used to install the top cover, fixing grooves are provided on the lower tube at both ends of the top cover opening, and the fixing grooves are long grooves, and the bottoms of the upper base block and the lower base block are provided with first screw holes that are compatible with the fixing grooves.

[0010] A further improvement is that the inner ends of the upper base block and the lower base block are each provided with a second screw hole, and the upper inner sides of the upper base block and the lower base block are each provided with a third screw hole, and the second screw hole and the third screw hole are used to cooperate with bolts to install the base of the adapter battery.

[0011] A further improvement is that wiring holes are provided inside the upper base block and the lower base block, and the wiring holes are used for connecting the base of the adapter battery to the power line.

[0012] A further improvement is that: a front joint and a rear pipe are respectively provided at both ends of the down tube, and the down tube is connected to the front frame and the rear frame of the bicycle through the front joint and the rear pipe.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model adopts an adjustable structure. By turning the knob and cooperating with the linkage assembly to drive the double-threaded screw to rotate, the upper base block and the lower base block can be driven to move along the guide rod and the track groove, and move out of the cavities at both ends to the top cover position, which is convenient for maintenance and repair.

[0015] 2. When installing the battery and the base, the utility model drives the double-threaded screw to rotate by turning the knob, which can drive the upper base block and the lower base block to move and fine-tune to compensate for the tolerance. After determining the position, the upper base block and the lower base block can be fixed by the first screw hole and the fixing groove in conjunction with the screw. Since the fixing groove is a long groove, it can adapt to the fixation of the upper base block and the lower base block after fine-tuning the position, and it is more reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an internal schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the inner cavity of the utility model;

[0018] Figure 3 It is a schematic diagram of the linkage assembly of the utility model;

[0019] Figure 4 It is a schematic diagram of the upper base block and the lower base block of the utility model;

[0020] Figure 5 It is a schematic diagram of the appearance of the utility model.

[0021] Among them: 1. lower tube; 2. upper base block; 3. lower base block; 4. inner cavity; 5. guide rod; 6. track groove; 7. double-threaded screw; 8. opening; 9. knob; 10. linkage cavity; 11. rotating shaft; 12. first bevel gear; 13. second bevel gear; 14. top cover opening; 15. fixing groove; 16. first screw hole; 17. second screw hole; 18. third screw hole; 19. wiring hole; 20. front joint; 21. rear connecting pipe. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0023] Embodiment 1

[0024] according to Figure 1 , 2 As shown in Figures 3, 4 and 5, this embodiment proposes a base block fixing structure in a bicycle lower tube, comprising a lower tube 1, an upper base block 2 and a lower base block 3, wherein the upper base block 2 and the lower base block 3 are respectively arranged at two ends of the lower tube 1, an inner cavity 4 is arranged in the side wall at the top of the inner cavity 4, and a guide rod 5 is arranged on one side of the inner cavity 4, a track groove 6 communicating with the inner cavity 4 is arranged above the inner portion of the lower tube 1, the upper base block 2 and the lower base block 3 are both movably arranged on the track groove 6, and guide blocks and screw blocks are arranged on the tops of the upper base block 2 and the lower base block 3, and the guide blocks pass through the track groove 6 and are movably installed with the guide rod 5;

[0025] A double-threaded screw 7 is rotatably provided on one side of the inner cavity 4, and the screw blocks of the upper base block 2 and the lower base block 3 pass through the track groove 6 and are respectively adapted to the threads at both ends of the double-threaded screw 7. An opening 8 is provided at one end of one side of the lower tube 1, and a knob 9 is rotatably provided in the opening 8. The knob 9 drives the double-threaded screw 7 to rotate through a linkage assembly. When in use, the knob 9 is turned to cooperate with the linkage assembly to drive the double-threaded screw 7 to rotate. By using the screw block, the upper base block 2 and the lower base block 3 can be driven to move along the guide rod 5 and the track groove 6, and move out of the cavities at both ends to the position of the top cover opening 14, which is convenient for maintenance and repair. When installing the battery and the base, the double-threaded screw 7 can be driven to rotate by turning the knob 9, and the upper base block 2 and the lower base block 3 can be driven to move fine-tuned to make up for the tolerance.

[0026] A linkage chamber 10 is provided inside the lower tube 1 at one end of the inner chamber 4, and the linkage assembly includes a rotating shaft 11 and a first bevel gear 12. The rotating shaft 11 is rotatably arranged inside the linkage chamber 10, and the rotating shaft 11 is connected to the knob 9. The first bevel gear 12 is arranged on the rotating shaft 11. One end of the double-threaded screw 7 extends into the linkage chamber 10, and one end of the double-threaded screw 7 is provided with a second bevel gear 13 adapted to the first bevel gear 12. When in use, the knob 9 is turned, and the knob 9 drives the rotating shaft 11 to rotate, drives the first bevel gear 12 to rotate, drives the second bevel gear 13 to rotate, and makes the double-threaded screw 7 rotate. By utilizing the function of the screw block, the upper base block 2 and the lower base block 3 can be driven to move along the guide rod 5 and the track groove 6.

[0027] The outer side of the knob 9 is provided with a hexagonal hole, and the hexagonal hole is adapted to a hexagonal spanner. When in use, a hexagonal spanner is prepared and inserted into the hexagonal hole, and the knob 9 can be turned. A specific tool is required to prevent random rotation by an outsider.

[0028] The two ends of the down tube 1 are respectively provided with a front joint 20 and a rear pipe 21, and the down tube 1 is connected to the front frame and the rear frame of the bicycle through the front joint 20 and the rear pipe 21. The front joint 20 and the rear pipe 21 are prior art, and are used to install the down tube 1 on the bicycle frame. The front joint 20 can be a joint pipe, etc., for connecting the front frame of the frame, and the rear pipe 21 is used to connect the rear frame of the frame.

[0029] Embodiment 2

[0030] according to Figure 1 , 2As shown in Figures 3, 4 and 5, this embodiment proposes a base block fixing structure in a bicycle lower tube, comprising a lower tube 1, an upper base block 2 and a lower base block 3, wherein the upper base block 2 and the lower base block 3 are respectively arranged at two ends of the lower tube 1, an inner cavity 4 is arranged in the side wall at the top of the inner cavity 4, and a guide rod 5 is arranged on one side of the inner cavity 4, a track groove 6 communicating with the inner cavity 4 is arranged above the inner portion of the lower tube 1, the upper base block 2 and the lower base block 3 are both movably arranged on the track groove 6, and guide blocks and screw blocks are arranged on the tops of the upper base block 2 and the lower base block 3, and the guide blocks pass through the track groove 6 and are movably installed with the guide rod 5;

[0031] A double-threaded screw 7 is rotatably provided on one side of the inner cavity 4, and the screw blocks of the upper base block 2 and the lower base block 3 pass through the track groove 6 and are respectively adapted to the threads at both ends of the double-threaded screw 7. An opening 8 is provided at one end of one side of the lower tube 1, and a knob 9 is rotatably provided in the opening 8. The knob 9 drives the double-threaded screw 7 to rotate through a linkage assembly. When in use, the knob 9 is turned to cooperate with the linkage assembly to drive the double-threaded screw 7 to rotate. By using the screw block, the upper base block 2 and the lower base block 3 can be driven to move along the guide rod 5 and the track groove 6, and move out of the cavities at both ends to the position of the top cover opening 14, which is convenient for maintenance and repair. When installing the battery and the base, the double-threaded screw 7 can be driven to rotate by turning the knob 9, and the upper base block 2 and the lower base block 3 can be driven to move fine-tuned to make up for the tolerance.

[0032] The bottom of the lower tube 1 is provided with a top cover opening 14, and the top cover opening 14 is used to install the top cover. The lower tube 1 at both ends of the top cover opening 14 is provided with a fixing groove 15, and the fixing groove 15 is a long groove. The bottom of the upper base block 2 and the lower base block 3 are provided with a first screw hole 16 adapted to the fixing groove 15. When installing the battery and the base, the double-threaded screw 7 is driven to rotate by turning the knob 9, and the upper base block 2 and the lower base block 3 can be driven to move and fine-tune to make up for the tolerance. After determining the position, the upper base block 2 and the lower base block 3 can be fixed by the first screw hole 16 and the fixing groove 15 with the screw. Since the fixing groove 15 is a long groove, it can adapt to the fixation of the upper base block 2 and the lower base block 3 after the position is fine-tuned.

[0033] The inner ends of the upper base block 2 and the lower base block 3 are each provided with a second screw hole 17, and the upper inner sides of the upper base block 2 and the lower base block 3 are each provided with a third screw hole 18, and the second screw hole 17 and the third screw hole 18 are used to cooperate with bolts to install the base of the adapter battery. The interior of the upper base block 2 and the lower base block 3 are each provided with a wiring hole 19, and the wiring hole 19 is used for the base of the adapter battery to connect the power cord. When in use, the base of the battery is installed on the upper base block 2 and the lower base block 3, and the base is fixed to the second screw hole 17 and the third screw hole 18 by screws, and the power cord is routed through the wiring hole 19.

[0034] The two ends of the down tube 1 are respectively provided with a front joint 20 and a rear pipe 21, and the down tube 1 is connected to the front frame and the rear frame of the bicycle through the front joint 20 and the rear pipe 21. The front joint 20 and the rear pipe 21 are prior art, and are used to install the down tube 1 on the bicycle frame. The front joint 20 can be a joint pipe, etc., for connecting the front frame of the frame, and the rear pipe 21 is used to connect the rear frame of the frame.

[0035] The fixing structure of the base block in the lower tube of the bicycle adopts an adjustable structure. By turning the knob 9 and cooperating with the linkage component to drive the double-threaded screw 7 to rotate, the upper base block 2 and the lower base block 3 can be driven to move along the guide rod 5 and the track groove 6 by utilizing the action of the screw block, and move out of the cavities at both ends to the position of the top cover opening 14, which is convenient for maintenance and repair. When installing the battery and the base, the double-threaded screw 7 can be driven to rotate by turning the knob 9, so that the upper base block 2 and the lower base block 3 can be driven to move and fine-tune to make up for the tolerance. After the position is determined, the upper base block 2 and the lower base block 3 can be fixed by the first screw hole 16 and the fixing groove 15 in cooperation with the screw. Since the fixing groove 15 is a long strip groove, it can be adapted to the fixation of the upper base block 2 and the lower base block 3 after the position is finely adjusted, and it is more reliable to use.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bicycle lower tube inner base block fixing structure, comprising a lower tube (1), an upper base block (2), and a lower base block (3), characterized in that: The upper base block (2) and the lower base block (3) are respectively arranged at the two ends of the lower tube (1); an inner cavity (4) is arranged in the side wall at the top of the lower tube (1); a guide rod (5) is arranged on one side of the inner cavity (4); a track groove (6) communicating with the inner cavity (4) is arranged at the top of the lower tube (1); the upper base block (2) and the lower base block (3) are both movably arranged on the track groove (6); and guide blocks and screw blocks are arranged at the top of the upper base block (2) and the lower base block (3); the guide blocks pass through the track groove (6) and are movably installed with the guide rod (5); A double-threaded screw (7) is rotatably provided on one side of the inner cavity (4); the screw blocks of the upper base block (2) and the lower base block (3) pass through the track grooves (6) and are respectively adapted to the threads at both ends of the double-threaded screw (7); an opening (8) is provided at one end of one side of the lower tube (1); and a knob (9) is rotatably provided in the opening (8); the knob (9) drives the double-threaded screw (7) to rotate through a linkage assembly.

2. The bicycle down tube inner base block fixing structure according to claim 1, characterized in that: A linkage chamber (10) is provided inside the lower tube (1) at one end of the inner chamber (4); the linkage assembly comprises a rotating shaft (11) and a first bevel gear (12); the rotating shaft (11) is rotatably arranged inside the linkage chamber (10), and the rotating shaft (11) is connected to the knob (9); the first bevel gear (12) is arranged on the rotating shaft (11); one end of the double-threaded screw rod (7) extends into the linkage chamber (10), and one end of the double-threaded screw rod (7) is provided with a second bevel gear (13) matched with the first bevel gear (12).

3. The bicycle down tube inner base block fixing structure according to claim 2, characterized in that: The outer side of the knob (9) is provided with a hexagonal hole, and the hexagonal hole is adapted to a hexagonal wrench.

4. The bicycle down tube inner base block fixing structure according to claim 1, characterized in that: The bottom of the lower tube (1) is provided with a top cover opening (14), and the top cover opening (14) is used to install the top cover, and the lower tube (1) is provided with fixing grooves (15) at both ends of the top cover opening (14), and the fixing grooves (15) are long grooves, and the bottoms of the upper base block (2) and the lower base block (3) are provided with first screw holes (16) adapted to the fixing grooves (15).

5. The bicycle down tube inner base block fixing structure according to claim 4, characterized in that: The inner ends of the upper base block (2) and the lower base block (3) are both provided with a second screw hole (17), and the upper inner sides of the upper base block (2) and the lower base block (3) are both provided with a third screw hole (18), and the second screw hole (17) and the third screw hole (18) are used to cooperate with bolts to install the base of the adapter battery.

6. The bicycle down tube inner base block fixing structure according to claim 5, characterized in that: The upper base block (2) and the lower base block (3) are both provided with wiring holes (19) inside, and the wiring holes (19) are used for connecting a power line to a base of an adaptable battery.

7. The bicycle down tube inner base block fixing structure according to claim 1, characterized in that: The two ends of the lower tube (1) are respectively provided with a front joint (20) and a rear pipe (21), and the lower tube (1) is connected to the front frame and the rear frame of the bicycle via the front joint (20) and the rear pipe (21).

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