Electric bicycle fastening device with reinforcing structure

Abstract

The utility model discloses an electric bicycle fastening device with a reinforcing structure, which comprises a bicycle frame and a transverse frame positioned at the bottom of the bicycle frame, the end part of the transverse frame is connected with a connecting frame, the connecting frame is connected with a rotating shaft through an elastic locking mechanism, and the elastic locking mechanism comprises a clamping groove, a reinforcing sheet, a conical elastic sleeve, a fixing ring and a locking bolt. The connecting frame has the advantages that the connecting frame is connected with the rotating shaft through the elastic locking mechanism, disassembly and assembly are convenient, the rotating shaft centering precision is higher through the elastic locking mechanism, the loosening phenomenon is not prone to occurring, and therefore stable connection of the hub rotating shaft of the electric bicycle and stable connection and installation of the whole rear wheel are guaranteed; connection reliability and safety of the rear wheel structure of the electric bicycle are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric bicycle device field, concretely is a kind of electric bicycle fastening device with reinforcing structure. BACKGROUND

[0002] Electric bicycle is with vehicle-mounted battery as auxiliary energy, has pedal riding ability, can realize electric assist or electric drive function two-wheeled bicycle, belongs to non-motor vehicle.Electric bicycle frame is the important component of bearing itself structural component and additional rated load weight, installs various operating equipment.

[0003] Electric bicycle hub rotating shaft is fixed on connecting frame by square card cooperation nut, to prevent the rotation of the middle shaft of stator.In the prior art with application number CN 202221356382.8, a kind of electric bicycle fastening device with reinforcing structure is disclosed, the overall rotating shaft is further stabilized by the installation of reinforcing sheet, the inside of connecting frame, to ensure the stable connection and installation of rear wheel, realize the connection reliability and safety of electric bicycle rear wheel structure.However, reinforcing sheet is rigidly connected with connecting frame by bolt, resulting in low rotating shaft centering accuracy, and prone to loosening phenomenon, thereby affecting the normal connection use of rotating shaft.

[0004] It should be noted that the above content belongs to the technical cognition of the inventor and does not necessarily constitute the prior art. CONTENT OF UTILITY MODEL

[0005] In view of the above defects, the utility model provides an electric bicycle fastening device with reinforcing structure to solve the problem of electric bicycle hub rotating shaft connection.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electric bicycle fastening device with reinforcing structure, comprising a frame and a crossbar at the bottom of the frame, the crossbar end is connected with a connecting frame, the connecting frame is connected with the rotating shaft through an elastic locking mechanism;

[0008] The elastic locking mechanism comprises a clamping groove, a reinforcing sheet, a conical elastic sleeve, a fixed ring and a locking bolt, the clamping groove is opened on the outside of the connecting frame, the reinforcing sheet is sleeved in the clamping groove, the conical elastic sleeve is fixedly installed on the outer end of the rotating shaft, the fixed ring is fixedly embedded in the reinforcing sheet, and the locking bolt is suspended in the conical elastic sleeve.

[0009] Further, the connecting frame top is provided with a connecting barrel through a connecting bolt, and a damping mechanism is arranged in the connecting barrel.

[0010] Further, the rotating shaft forms a clamping structure between the reinforcing sheet and the connecting frame.

[0011] Further, the locking bolt comprises a conical head and a threaded rod, and the conical head is internally provided with an internal hexagonal head.

[0012] Further, the inner bottom of the conical elastic sleeve is tapped with a threaded groove corresponding to the threaded rod, and the outer surface of the front end of the conical elastic sleeve is uniformly provided with a plurality of strip-shaped grooves.

[0013] The utility model provides a kind of electric bicycle fastening device with reinforcing structure, with following beneficial effects, connecting frame is connected with rotating shaft by elastic locking mechanism, convenient to disassemble and assemble, the elastic locking mechanism rotating shaft centring precision is higher, and it is not prone to loosening phenomenon, to ensure that electric bicycle hub rotating shaft is stably connected, and the stable connection installation of rear wheel whole, realize the connection reliability and safety of electric bicycle rear wheel structure. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a kind of electric bicycle fastening device with reinforcing structure described in the utility model schematic diagram.

[0015] Figure 2 It is the utility model Figure 1 It is the utility model A place local amplification diagram.

[0016] Figure 3 It is the utility model elastic locking mechanism schematic diagram.

[0017] Figure 4 It is the utility model conical elastic sleeve sectional view.

[0018] Figure 5 It is the utility model locking bolt schematic diagram.

[0019] In the drawing: 1, frame;2, cross frame;3, connecting frame;4, rotating shaft;5, clamping groove;6, reinforcing sheet;7, conical elastic sleeve;8, fixed ring;9, locking bolt;10, connecting bolt;11, connecting barrel;12, conical head;13, threaded rod;14, internal hexagonal head;15, threaded groove;16, strip-shaped groove. DETAILED DESCRIPTION

[0020] The utility model will be specifically described below in conjunction with the drawings, such as Figures 1-5As shown: a kind of electric bicycle fastening device with reinforcing structure, including frame 1 and the crosspiece 2 at the bottom of frame 1, the end of crosspiece 2 is connected with connecting frame 3, the connecting frame 3 is connected with rotating shaft 4 by elastic locking mechanism;Elastic locking mechanism includes clamping groove 5, reinforcing sheet 6, conical elastic sleeve 7, fixed ring 8 and locking bolt 9, the clamping groove 5 is opened in the outside of connecting frame 3, the reinforcing sheet 6 is sleeved in clamping groove 5, the conical elastic sleeve 7 is fixedly installed in the outer end of rotating shaft 4, the fixed ring 8 is fixedly embedded in reinforcing sheet 6, the locking bolt 9 is suspended in conical elastic sleeve 7;The connecting frame 3 top is installed with connecting barrel 11 by connecting bolt 10, and damping mechanism is provided in connecting barrel 11;The rotating shaft 4 forms clamping structure between connecting frame 3 and reinforcing sheet 6;The locking bolt 9 includes conical head 12 and threaded rod 13, and internal hex head 14 is provided in conical head 12;Screw groove 15 corresponding to threaded rod 13 is formed in the bottom of conical elastic sleeve 7, and a plurality of strip grooves 16 are uniformly opened on the outer surface of the front end of conical elastic sleeve 7.

[0021] The working principle of the embodiment is as follows: the connecting frame 3 top is installed with connecting barrel 11 by connecting bolt 10, and damping mechanism is provided in connecting barrel 11, the damping mechanism includes spring and connecting piece, which can effectively resolve the vibration of the whole device, which is prior art;

[0022] When installing: the clamping groove 5 is opened in the outside of connecting frame 3, the reinforcing sheet 6 is sleeved in clamping groove 5, the conical elastic sleeve 7 is fixedly installed in the outer end of rotating shaft 4, the fixed ring 8 is fixedly embedded in reinforcing sheet 6, and the locking bolt 9 is suspended in conical elastic sleeve 7;The connecting frame 3 top is installed with connecting barrel 11 by connecting bolt 10, and damping mechanism is provided in connecting barrel 11;The rotating shaft 4 forms clamping structure between connecting frame 3 and reinforcing sheet 6;The locking bolt 9 includes conical head 12 and threaded rod 13, and internal hex head 14 is provided in conical head 12;Screw groove 15 corresponding to threaded rod 13 is formed in the bottom of conical elastic sleeve 7, and a plurality of strip grooves 16 are uniformly opened on the outer surface of the front end of conical elastic sleeve 7, as shown in Figure 3 — Figure 5 As shown in the figure;

[0023] The motor of the electric bicycle is composed of a stator and a rotor, wherein the rotor is a wheel hub and a tire, and the stator is a coil, which can generate a magnetic field after being electrified. According to the property of the magnet, same poles repel each other, and different poles attract each other. Therefore, the magnetic steel on the wheel hub rotates under the action of the magnetic force of the coil. The middle of the stator is a rotating shaft 4, and the two ends are used to be fixedly connected with the connecting frame 3 on the vehicle body. During installation, the user first passes the two ends of the stator rotating shaft 4 through the clamping grooves 5 of the connecting frame 3 respectively, then, the reinforcing sheet 6 is sleeved in the clamping groove 5, and the fixing ring 8 on the reinforcing sheet 6 is sleeved outside the conical elastic sleeve 7 at the front end of the rotating shaft 4, then, the locking bolt 9 is suspended, the conical head 12 is extruded to expand the conical elastic sleeve 7, and the locking is completed in cooperation with the fixing ring 8. By fixing the two ends of the rotating shaft 4 and adopting the elastic locking mechanism, the centering accuracy of the rotating shaft is higher, and the loosening phenomenon is less likely to occur, so that the stable connection of the wheel hub rotating shaft of the electric bicycle and the stable connection and installation of the whole rear wheel of the vehicle are ensured, and the connection reliability and safety of the rear wheel structure of the electric bicycle are realized.

[0024] The above technical scheme only embodies the preferred technical scheme of the technical scheme of the utility model, and some changes made by the person skilled in the art to some parts of the utility model all embody the principle of the utility model and belong to the protection scope of the utility model.

Claims

1. A power-assisted bicycle fastening device with a reinforcing structure, comprising a frame (1) and a cross frame (2) at the bottom of the frame (1), the end of the cross frame (2) being connected with a connecting frame (3), characterized in that, The connecting frame (3) is connected with the rotating shaft (4) through an elastic locking mechanism. The elastic locking mechanism comprises a clamping groove (5), a reinforcing sheet (6), a conical elastic sleeve (7), a fixing ring (8) and a locking bolt (9). The clamping groove (5) is opened on the outer side of the connecting frame (3). The reinforcing sheet (6) is sleeved in the clamping groove (5). The conical elastic sleeve (7) is fixedly installed on the outer end of the rotating shaft (4). The fixing ring (8) is fixedly embedded in the reinforcing sheet (6). The locking bolt (9) is suspended in the conical elastic sleeve (7).

2. The electric bicycle fastening device with a reinforcing structure according to claim 1, characterized in that, The top of the connecting frame (3) is provided with a connecting cylinder (11) through a connecting bolt (10). The connecting cylinder (11) is provided with a damping mechanism.

3. The electric bicycle fastening device with a reinforcing structure according to claim 1, characterized in that, The rotating shaft (4) and the connecting frame (3) form a clamping structure through the reinforcing sheet (6).

4. The electric bicycle fastening device with a reinforcing structure according to claim 1, characterized in that, The locking bolt (9) comprises a conical head (12) and a threaded rod (13). The conical head (12) is provided with an internal hexagonal head (14).

5. The electric bicycle fastening device with a reinforcing structure according to claim 1, characterized in that, The inner bottom of the conical elastic sleeve (7) is provided with a threaded groove (15) corresponding to the threaded rod (13). The outer surface of the front end of the conical elastic sleeve (7) is uniformly provided with a plurality of strip-shaped grooves (16).

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