Direct-push rack type electronic transmission for bicycle

Abstract

The direct-push rack type electronic transmission for the bicycle comprises a bottom box, a limiting groove is formed in the rear side of the bottom of an inner cavity of the bottom box, an inner cavity of the limiting groove is connected with a movable sliding strip in a sliding mode, and a rack is fixedly connected to the upper side of the front side wall of the movable sliding strip. A supporting plate is fixedly connected to the front side of the bottom of an inner cavity of the bottom box, a turbine is rotationally connected between the inner side walls of the supporting plate, the turbine and the rack rotate in a meshed mode, a supporting block is fixedly connected to the bottom of the inner cavity of the bottom box and located on the right side wall of the supporting plate on the right side, and a micro motor is fixedly connected to the top of the supporting block. According to the direct-push rack type electronic transmission for the bicycle, the rotation precision of the transmission can be accurately controlled, the speed can be changed in time, and the speed changing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmissions, in particular to a direct-push rack type electronic transmission for bicycles. Background Art

[0002] The bicycle transmission performs a gear shifting operation by switching a chain between a plurality of adjacent sprockets of a sprocket assembly of the bicycle. Since the plurality of sprockets have different sizes, the bicycle can achieve a gear shifting effect through the cooperation between the chain and the different sprockets.

[0003] The existing transmission changes gears by rotating a steel wire, which requires manual operation. The operation process cannot control the precise rotation accuracy, resulting in the transmission not shifting in time and reducing the efficiency of the shifting. For this reason, we propose a direct-push rack electronic transmission for bicycles. Utility Model Content

[0004] The utility model aims to provide a direct-push rack type electronic transmission for bicycles, so as to solve the problem in the above background technology that the transmission speed is not timely enough and the speed change efficiency is reduced.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a direct-push rack-type electronic transmission for a bicycle, comprising a bottom box, a limiting groove is opened on the rear side of the bottom of the inner cavity of the bottom box, a movable slide is slidably connected to the inner cavity of the limiting groove, a rack is fixedly connected to the upper side of the front side wall of the movable slide, a support plate is fixedly connected to the front side of the bottom of the inner cavity of the bottom box, a turbine is rotatably connected between the inner side walls of the support plate, the turbine meshes and rotates with the rack, a support block is fixedly connected to the bottom of the inner cavity of the bottom box and the right side wall of the support plate located on the right side, a micro motor is fixedly connected to the top of the support block, a gear box is fixedly connected to the left side wall of the micro motor, the input end of the gear box is fixedly connected to the output end of the micro motor, and the output end of the gear box is fixedly connected to the turbine.

[0006] As a further description of the above technical solution:

[0007] A connecting block is fixedly connected to the right side of the rear side wall of the movable slide bar, and a mounting hole is opened on the left side wall of the connecting block.

[0008] As a further description of the above technical solution:

[0009] A sensor is fixedly connected to the top of the micro motor.

[0010] As a further description of the above technical solution:

[0011] A through slot is provided on the right side of the rear side wall of the bottom box, the connecting block passes through the through slot and extends to the rear side wall of the bottom box, and a top cover is fixedly connected to the top of the bottom box.

[0012] As a further description of the above technical solution:

[0013] A circuit board is fixedly connected to the left side of the bottom of the inner cavity of the bottom box, and an electronic jitter detection module is electrically connected to the top of the circuit board.

[0014] As a further description of the above technical solution:

[0015] A bolt is screwed on the top of the fastening ring, a base is provided on the right side of the rear side wall of the fastening ring, an advance key is embedded in the left side of the top of the base, a reverse key is embedded in the right side of the top of the base, an adjusting nut is provided on the right side of the front side wall of the fastening ring, the adjusting nut is screwed to the base, and a circuit board and a battery are provided inside the base.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the bicycle uses a direct-push rack-type electronic transmission, which realizes the operation of shifting gears by operating the shift key and the shift key on the base, and controls the start of the micro motor. A sensor is installed on the micro motor, and the rotation angle and the number of rotations of the micro motor are controlled by the sensor. When the micro motor starts, it drives the turbine to rotate through the gear box, and the turbine and the rack are meshed and rotated, while driving the movable slide bar to move horizontally in the limit groove. At the same time, the movable slide bar drives the connecting block in the through groove, and the connecting block is connected to the speed change wire, thereby driving the transmission to change speed, so that the rotation accuracy of the transmission can be accurately controlled, the speed can be changed in time, and the speed change efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the exploded structure of a direct-push rack type electronic transmission for a bicycle proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a top view and cross-section structure of a direct-push rack type electronic transmission for a bicycle proposed by the utility model;

[0019] Figure 3 The utility model is a partial structural schematic diagram of a direct-push rack type electronic transmission for a bicycle.

[0020] In the figure: 100, bottom box; 110, limit groove; 111, movable slide bar; 112, rack; 113, connecting block; 120, support plate; 121, turbine; 130, support block; 131, micro motor; 133, sensor; 140, through groove; 150, top cover; 160, circuit board; 161, electronic jitter detection module; 200, fastening ring; 210, bolt; 220, base; 221, shift key; 222, shift back key; 230, adjusting nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The utility model provides a direct-push rack type electronic transmission for bicycles, which can accurately control the rotation accuracy of the transmission, can change speed in time, and improve the efficiency of speed change. Figure 1-3 , including a bottom box 100;

[0025] Please refer again Figure 1-3 A limiting groove 110 is opened at the rear side of the bottom of the inner cavity of the bottom box 100, and a moving slide bar 111 is slidably connected to the inner cavity of the limiting groove 110, and a rack 112 is fixedly connected to the upper side of the front side wall of the moving slide bar 111, and a support plate 120 is fixedly connected to the front side of the bottom of the inner cavity of the bottom box 100, and a turbine 121 is rotatably connected between the inner side walls of the support plate 120, and the turbine 121 is meshed and rotated with the rack 112, and a support block 130 is fixedly connected to the bottom of the inner cavity of the bottom box 100 and the right side wall of the right support plate 120, and a micro motor 131 is fixedly connected to the top of the support block 130, and a gear box 132 is fixedly connected to the left side wall of the micro motor 131, and the input end of the gear box 132 is fixedly connected to the output end of the micro motor 131 The output end of the gear box 132 is fixedly connected to the turbine 121. The forward and reverse gears are operated by operating the forward shift key 221 and the reverse shift key 222 on the operating base 220 to control the start of the micro motor 131. The micro motor 131 is equipped with a sensor 133. The rotation angle and the number of rotations of the micro motor 131 are controlled by the sensor 133. When the micro motor 131 is started, the turbine 121 is driven to rotate through the gear box 132. While the turbine 121 is meshed and rotated with the rack 112, it drives the movable slide bar 111 to move horizontally in the limit groove 110. At the same time, the movable slide bar 111 drives the connecting block 113 to move in the through groove 140. The connecting block 113 is connected to the speed change wire, thereby driving the transmission to change speed.

[0026] To sum up, the rotation accuracy of the transmission can be accurately controlled, the speed can be changed in time, and the efficiency of the speed change can be improved.

[0027] Please refer again Figure 1-3 A connecting block 113 is fixedly connected to the right side of the rear side wall of the movable slide bar 111, a mounting hole is opened on the left side wall of the connecting block 113, a sensor 133 is fixedly connected to the top of the micro motor 131, a through slot 140 is opened on the right side of the rear side wall of the bottom box 100, the connecting block 113 passes through the through slot 140 and extends to the rear side wall of the bottom box 100, a top cover 150 is fixedly connected to the top of the bottom box 100, and a circuit board 160 is fixedly connected to the left side of the bottom of the inner cavity of the bottom box 100. The circuit board The top of 160 is electrically connected to the electronic jitter detection module 161, the top of the fastening ring 200 is screwed with a bolt 210, a base 220 is provided on the right side of the rear side wall of the fastening ring 200, a forward shift key 221 is embedded in the left side of the top of the base 220, a reverse shift key 222 is embedded in the right side of the top of the base 220, an adjusting nut 230 is provided on the right side of the front side wall of the fastening ring 200, the adjusting nut 230 is screwed to the base 220, and a circuit board and a battery are provided inside the base 220.

[0028] In specific use, when using the electronic transmission, the technical personnel in this field install the bottom box 100 on the handlebar, install the battery, close the top cover 150, install the steel wire cable of the transmission on the connecting block 113, and adjust the tension before use. During riding, press the shift key 221 and the shift key 222 on the operating base 220 to realize the shift operation. Long pressing the shift forward or shift backward can change to the fastest or slowest, and control the micro motor 131 to start. The micro motor 131 is installed with a sensor 133. The rotation angle and number of rotations of the micro motor 131 are controlled by the sensor 133. The micro motor 131 starts The turbine 121 is driven to rotate, and the turbine 121 engages and rotates with the rack 112, while driving the movable slide bar 111 to move laterally in the limit groove 110. At the same time, the movable slide bar 111 drives the connecting block 113 in the through groove 140, and the connecting block 113 is connected to the speed change wire, thereby driving the transmission to change speed, and a circuit board 160 and an electronic jitter detection module 161 are installed inside the transmission, and the transmission is connected to the mobile phone via Bluetooth. When the mobile phone is connected to the transmission, no detection is output. When the mobile phone is away from the transmission for a certain distance, the transmission detects jitter and sends an alarm to the mobile phone terminal.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A direct-push rack type electronic transmission for bicycles, Features: The invention comprises a bottom box (100) and a fastening ring (200), wherein a limiting groove (110) is provided at the rear side of the bottom of the inner cavity of the bottom box (100), a movable slide bar (111) is slidably connected to the inner cavity of the limiting groove (110), a rack (112) is fixedly connected to the upper side of the front side wall of the movable slide bar (111), a support plate (120) is fixedly connected to the front side of the bottom of the inner cavity of the bottom box (100), a turbine (121) is rotatably connected between the inner side walls of the support plate (120), and the turbine (121) and the rack are connected to each other. (112) meshing and rotating, a support block (130) is fixedly connected to the bottom of the inner cavity of the base box (100) and the right side wall of the support plate (120) on the right side, a micro motor (131) is fixedly connected to the top of the support block (130), a gear box (132) is fixedly connected to the left side wall of the micro motor (131), an input end of the gear box (132) is fixedly connected to an output end of the micro motor (131), and an output end of the gear box (132) is fixedly connected to the turbine (121).

2. A direct-push rack type electronic transmission for a bicycle according to claim 1, Features: A connection block (113) is fixedly connected to the right side of the rear side wall of the movable slide bar (111), and a mounting hole is provided on the left side wall of the connection block (113).

3. A direct-push rack type electronic transmission for a bicycle according to claim 1, Features: A sensor (133) is fixedly connected to the top of the micro motor (131).

4. A direct-push rack type electronic transmission for a bicycle according to claim 2, Features: A through slot (140) is provided on the right side of the rear side wall of the base box (100); the connecting block (113) passes through the through slot (140) and extends to the rear side wall of the base box (100); and a top cover (150) is fixedly connected to the top of the base box (100).

5. The direct-push rack type electronic transmission for bicycle according to claim 1, Features: A circuit board (160) is fixedly connected to the left side of the bottom of the inner cavity of the bottom box (100), and an electronic jitter detection module (161) is electrically connected to the top of the circuit board (160).

6. A direct-push rack type electronic transmission for a bicycle according to claim 1, Features: A bolt (210) is screwed on the top of the fastening ring (200); a base (220) is provided on the right side of the rear side wall of the fastening ring (200); a shift-forward key (221) is embedded on the left side of the top of the base (220); a shift-back key (222) is embedded on the right side of the top of the base (220); an adjusting nut (230) is provided on the right side of the front side wall of the fastening ring (200); the adjusting nut (230) is screwed on the base (220); and a circuit board and a battery are provided inside the base (220).

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