Electric bicycle with middle motor

Abstract

The utility model discloses an electric bicycle with a built-in motor. The electric bicycle comprises a front frame, a rear frame and a connecting seat, the connecting seat comprises a main body, a bottom plate and an adjusting rod, the main body is provided with the connecting assembly, the connecting assembly is detachably connected with the front frame or the rear frame, and the main body is fixedly connected with the rear frame or the front frame; the bottom plate is fixedly connected with the main body, the adjusting rod is arranged between the main body and the bottom plate and is matched with the main body and the bottom plate to form a mounting groove, and the arrangement position of the adjusting rod on the main body and the bottom plate is adjustable; a middle motor is arranged in the mounting groove, a positioning assembly is arranged in the mounting groove, and the positioning assembly is in positioning fit with the middle motor. According to the utility model, the disassembly and assembly convenience of the mid-motor can be improved, and the maintenance and replacement convenience of the mid-motor can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycles, in particular to an electric bicycle with a centrally located motor. Background Art

[0002] Electric bicycles, also known as electric power-assisted bicycles, are a type of bicycle that is designed for power-assisted use. Traditional electric bicycles, especially those with hub motors, can become unstable or "drift" when traveling at high speeds or when loaded with heavy loads due to uneven front-to-back weight distribution.

[0003] In response to the defects of transmission electric bicycles, the company has researched and developed a mid-mounted motor structure that places the motor in the middle of the electric bicycle. By installing the mid-mounted motor near the center of gravity of the vehicle, it can maximize the front and rear balance of the electric vehicle and improve driving stability.

[0004] Although the existing mid-mounted motor style electric bicycles have solved the problem of uneven weight distribution of electric bicycles, they still need to disassemble a large number of parts when repairing and replacing the motor, which is complicated and time-consuming, causing inconvenience to users. Summary of the Invention

[0005] The purpose of the utility model is to provide an electric bicycle with a centrally mounted motor, which can improve the convenience of disassembling and assembling the centrally mounted motor, thereby improving the convenience of repairing and replacing the centrally mounted motor.

[0006] In order to achieve the above-mentioned purpose, the present invention provides an electric bicycle with a mid-mounted motor, and the specific implementation scheme is as follows:

[0007] An electric bicycle with a mid-motor, comprising a front frame, a rear frame and a connecting seat;

[0008] The connecting seat includes a main body, a bottom plate and an adjusting rod. The main body is provided with the connecting assembly, the connecting assembly is detachably connected to the front frame or the rear frame, and the main body is fixedly connected to the rear frame or the front frame;

[0009] The bottom plate is fixedly connected to the main body, the adjusting rod is arranged between the main body and the bottom plate, and cooperates with the main body and the bottom plate to form a mounting groove, and the setting position of the adjusting rod on the main body and the bottom plate is adjustable;

[0010] A central motor is provided in the installation slot, and a positioning assembly is provided in the installation slot. The positioning assembly is positioned and matched with the central motor.

[0011] The utility model discloses an electric bicycle with a mid-mounted motor. Compared with the prior art, the electric bicycle is provided with a front frame and a rear frame, and the front frame and the rear frame are detachably connected by a connecting assembly on the main body of the connecting seat. The connecting seat also includes a bottom plate and an adjusting rod. The bottom plate and the adjusting rod cooperate with the main body to form a mounting groove for mounting the mid-mounted motor, and the position of the adjusting rod is adjustable to adapt to the installation and use of mid-mounted motors of different sizes. At the same time, a positioning assembly is provided in the mounting groove to improve the connection stability of the mid-mounted motor in the mounting groove, so that the mid-mounted motor of the electric bicycle can be disassembled or repaired by simply removing the adjusting rod when repairing or replacing it, thereby improving the convenience of repairing and replacing the mid-mounted motor.

[0012] In some embodiments, the positioning assembly includes a positioning groove and a positioning protrusion, the positioning groove is provided on the inner wall of the mounting groove, and the positioning protrusion is provided on the motor housing of the center motor; or, the positioning groove is provided on the motor housing of the center motor, the positioning protrusion is provided on the inner wall of the mounting groove, and the positioning protrusion is positioned and matched with the positioning groove.

[0013] By adopting a structure in which the positioning protrusion and the positioning groove are positioned and matched, the central motor can be quickly positioned in the installation groove, thereby improving the installation convenience and stability of the central motor.

[0014] In some embodiments, the side of the connecting seat opposite to the positioning protrusion or positioning groove is open, and a sealing cover is hinged on the main body or the bottom plate near one end of the opening, and a locking buckle is provided at the other end of the sealing cover, and a locking block is provided on the bottom plate or the main body, and the locking block is locked with the locking buckle.

[0015] By arranging a sealing cover on the main body, the locking cooperation between the locking block and the locking buckle is used to realize the connection and fixation between the sealing cover and the main body or the base plate, thereby improving the sealing of the installation groove and thereby improving the sealing and safety of the use of the mid-mounted motor.

[0016] In some embodiments, a transmission assembly is provided on the front frame or the rear frame, a reduction gearbox is embedded in the main body, one end of the reduction gearbox is connected to the mounting slot or extends into the mounting slot, and when the mid-mounted motor is provided in the mounting slot, the motor shaft of the mid-mounted motor is connected to the reduction gearbox.

[0017] By adopting a reduction gearbox to connect the mid-mounted motor and the transmission components on the electric bicycle, the connection convenience and transmission stability are improved.

[0018] In some embodiments, a guide rail is provided on a side of the main body close to the mounting slot, and a plurality of positioning holes are provided on a side of the base plate close to the mounting slot; or a plurality of positioning holes are provided on a side of the main body close to the mounting slot, and a guide rail is provided on a side of the base plate close to the mounting slot, one end of the adjusting rod is provided in the guide rail and can slide in the guide rail, and the other end is plugged into and fitted with the positioning hole.

[0019] The position of the adjustment rod is adjusted by sliding the guide rail, which improves the convenience of the installation slot in adapting to mid-mounted motors of different sizes, and the structural stability of the installation slot is improved by positioning the positioning hole and the adjustment rod.

[0020] In some embodiments, the adjusting rod includes a fixed rod and a telescopic rod, a sliding protrusion is provided at the end of the fixed rod, the sliding protrusion is provided in the guide rail, and can slide in the guide rail, the telescopic rod is connected to the other end of the fixed rod, and a plug-in protrusion is provided on the other end of the telescopic rod, and the plug-in protrusion is plugged into the positioning hole.

[0021] By adopting the telescopic matching of the telescopic rod and the insertion of the plug-in protrusion and the positioning hole, the convenience of disassembly and assembly of the installation slot is improved, thereby improving the convenience of replacement and maintenance of the central motor.

[0022] In some embodiments, the connecting assembly includes a mortise and tenon groove and a mortise and tenon block, the mortise and tenon groove is provided on the outer wall of the main body, and the mortise and tenon block is provided on the front frame or the rear frame; or the mortise and tenon block is provided on the outer wall of the main body, the mortise and tenon groove is provided on the front frame or the rear frame, and the mortise and tenon block and the mortise and tenon groove are mortise and tenon connected.

[0023] The detachable connection between the front frame and the rear frame is achieved by adopting the mortise and tenon block and the mortise and tenon groove mortise and tenon connection structure, thereby improving the convenience of disassembling and assembling the front frame and the rear frame.

[0024] In some embodiments, a first through-hole is provided on the mortise and tenon block and passes through the mortise and tenon block, and a second through-hole is provided on the main body provided in the mortise and tenon groove, or the front frame or the rear frame and passes through itself and connects to the mortise and tenon groove. A connecting screw is also included, and the end of the connecting screw extends from one of the second through-holes, passes through the first through-hole and extends from the other second through-hole, and is sleeved with a fixing nut threadedly connected thereto.

[0025] By adopting a connecting screw rod to enter from one of the second through holes, pass through the first through hole and then exit from the other second through hole, and being screwed and fixed with a fixing nut, the connection stability between the mortise and tenon block and the mortise and tenon groove is improved, thereby improving the connection stability between the front frame and the rear frame.

[0026] Based on the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0027] The electric bicycle is divided into a front frame and a rear frame, and the front frame and the rear frame are detachably connected by a connecting component on the main body of the connecting seat, and the connecting seat also includes a base plate and an adjusting rod, and the base plate and the adjusting rod cooperate with the main body to form a mounting groove for mounting the mid-mounted motor, and the position of the adjusting rod is adjustable to adapt to the installation and use of mid-mounted motors of different sizes; at the same time, a positioning component is provided in the mounting groove to improve the connection stability of the mid-mounted motor in the mounting groove, so that the mid-mounted motor of the electric bicycle can be disassembled or repaired by simply removing the adjusting rod when repairing or replacing it, thereby improving the convenience of repairing and replacing the mid-mounted motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 It is a partial enlarged view of the utility model;

[0030] Figure 3 It is a cross-sectional view of the utility model;

[0031] Figure 4 This is a cross-sectional diagram of the utility model with the connecting base removed from the central motor;

[0032] Figure 5 This is a schematic diagram of the mid-mounted motor of the present invention.

[0033] Description of reference numerals:

[0034] 100, front frame; 200, rear frame; 300, connecting seat; 310, main body; 320, bottom plate; 330, adjusting rod; 331, fixing rod; 332, telescopic rod; 333, plug-in protrusion; 334, sliding protrusion; 340, mounting groove; 350, sealing cover; 351, locking buckle; 352, locking block; 360, positioning protrusion; 370, positioning groove; 380, positioning hole; 390, guide rail; 400, mortise and tenon block; 410, first through-hole; 500, mortise and tenon groove; 510, second through-hole; 600, mid-mounted motor; 700, reduction gearbox. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0036] Unless otherwise specified or defined, the "first, second..." used in this article is only used to distinguish names and does not represent a specific quantity or order.

[0037] Unless stated otherwise or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

[0039] like Figure 1-5 As shown, the present embodiment provides an electric bicycle with a mid-motor, comprising a front frame 100, a rear frame 200 and a connecting seat 300; the connecting seat 300 comprises a main body 310, a bottom plate 320 and an adjusting rod 330, the main body 310 is provided with the connecting assembly, the connecting assembly is detachably connected to the front frame 100 or the rear frame 200, and the main body 310 is fixedly connected to the rear frame 200 or the front frame 100; the bottom plate 320 is fixedly connected to the main body 310, the adjusting rod 330 is arranged between the main body 310 and the bottom plate 320, and cooperates with the main body 310 and the bottom plate 320 to form a mounting groove 340, and the setting position of the adjusting rod 330 on the main body 310 and the bottom plate 320 is adjustable; a mid-mounted motor 600 is provided in the mounting groove 340, and a positioning assembly is provided in the mounting groove 340, and the positioning assembly is positioned and matched with the mid-mounted motor 600.

[0040] In some embodiments, the positioning assembly includes a positioning groove 370 and a positioning protrusion 360, the positioning groove 370 is arranged on the inner wall of the mounting groove 340, and the positioning protrusion 360 is arranged on the motor housing of the center motor 600; or, the positioning groove 370 is arranged on the motor housing of the center motor 600, the positioning protrusion 360 is arranged on the inner wall of the mounting groove 340, and the positioning protrusion 360 is positioned and matched with the positioning groove 370.

[0041] By adopting the positioning and matching structure of the positioning protrusion 360 and the positioning groove 370, the central motor 600 can be quickly positioned in the installation groove 340, thereby improving the installation convenience and stability of the central motor 600.

[0042] In some embodiments, the side of the connecting seat 300 opposite to the positioning protrusion 360 or the positioning groove 370 is open, and a sealing cover 350 is hinged on the main body 310 or the bottom plate 320 near one end of the opening, and a locking buckle 351 is provided at the other end of the sealing cover 350, and a locking block 352 is provided on the bottom plate 320 or the main body 310, and the locking block 352 is locked with the locking buckle 351.

[0043] By setting a sealing cover 350 on the main body 310, the locking cooperation between the locking block 352 and the locking buckle 351 is used to realize the connection and fixation between the sealing cover 350 and the main body 310 or the base plate 320, thereby improving the sealing of the installation groove 340, thereby improving the sealing and safety of the central motor 600.

[0044] In some embodiments, a transmission assembly is provided on the front frame 100 or the rear frame 200, and a reduction gearbox 700 is embedded in the main body 310. One end of the reduction gearbox 700 is connected to the mounting slot 340 or extends into the mounting slot 340. When the mid-mounted motor 600 is disposed in the mounting slot 340, the motor shaft of the mid-mounted motor 600 is connected to the reduction gearbox 700.

[0045] The reduction gearbox 700 is used to connect the mid-mounted motor 600 and the transmission components on the electric bicycle, thereby improving connection convenience and transmission stability.

[0046] In some embodiments, a guide rail 390 is provided on a side of the main body 310 close to the mounting groove 340, and a plurality of positioning holes 380 are provided on a side of the base plate 320 close to the mounting groove 340; or a plurality of positioning holes 380 are provided on a side of the main body 310 close to the mounting groove 340, and a guide rail 390 is provided on a side of the base plate 320 close to the mounting groove 340, one end of the adjusting rod 330 is provided in the guide rail 390 and can slide in the guide rail 390, and the other end is plugged into and fits with the positioning hole 380.

[0047] The position of the adjustment rod 330 is adjusted by sliding the guide rail 390, thereby improving the convenience of the installation slot 340 in adapting to the central motor 600 of different sizes, and the structural stability of the installation slot 340 is improved by positioning the positioning hole 380 and the adjustment rod 330.

[0048] In some embodiments, the adjusting rod 330 includes a fixed rod 331 and a telescopic rod 332, and a sliding protrusion 334 is provided at the end of the fixed rod 331. The sliding protrusion 334 is provided in the guide rail 390 and can slide in the guide rail 390. The telescopic rod 332 is connected to the other end of the fixed rod 331, and a plug-in protrusion 333 is provided on the other end of the telescopic rod 332. The plug-in protrusion 333 is plugged into the positioning hole 380.

[0049] By using the telescopic rod 332 to telescope and fit the plug-in protrusion 333 and the positioning hole 380, the convenience of disassembly and assembly of the installation slot 340 is improved, thereby improving the convenience of replacement and maintenance of the central motor 600.

[0050] In some embodiments, the connection assembly includes a mortise and tenon groove 500 and a mortise and tenon block 400, the mortise and tenon groove 500 is provided on the outer wall of the main body 310, and the mortise and tenon block 400 is provided on the front frame 100 or the rear frame 200; or the mortise and tenon block 400 is provided on the outer wall of the main body 310, the mortise and tenon groove 500 is provided on the front frame 100 or the rear frame 200, and the mortise and tenon block 400 and the mortise and tenon groove 500 are connected by mortise and tenon.

[0051] The mortise and tenon connection structure of the mortise and tenon block 400 and the mortise and tenon groove 500 is adopted to realize the detachable connection between the front frame 100 and the rear frame 200, thereby improving the convenience of disassembly and assembly of the front frame 100 and the rear frame 200.

[0052] In some embodiments, a first through-hole 410 is provided on the mortise and tenon block 400 and passes through the mortise and tenon block 400 , and a second through-hole 510 is provided on the main body 310 provided in the mortise and tenon groove 500 , or on the front frame 100 or the rear frame 200 and passes through the main body 310 and communicates with the mortise and tenon groove 500 . A connecting screw is also included, and an end of the connecting screw extends from one of the second through-holes 510 , passes through the first through-hole 410 and extends from the other second through-hole 510 , and is sleeved with a fixing nut threadedly connected thereto.

[0053] By using a connecting screw to enter from one of the second through-holes 510, pass through the first through-hole 410, and then exit from the other second through-hole 510, and then be screwed and fixed with a fixing nut, the connection stability between the mortise and tenon block 400 and the mortise and tenon groove 500 is improved, thereby improving the connection stability between the front frame 100 and the rear frame 200.

[0054] The electric bicycle with a mid-mounted motor provided in this embodiment is different from the prior art in that the electric bicycle is configured as a front frame 100 and a rear frame 200, and the front frame 100 and the rear frame 200 are detachably connected by a connecting assembly on the main body 310 of the connecting seat 300, and the connecting seat 300 also includes a base plate 320 and an adjusting rod 330, and the base plate 320 and the adjusting rod 330 cooperate with the main body 310 to form a mounting groove 340 for mounting the mid-mounted motor 600, and the position of the adjusting rod 330 is adjustable to adapt to the installation and use of mid-mounted motors 600 of different sizes; at the same time, a positioning assembly is provided in the mounting groove 340 to improve the connection stability of the mid-mounted motor 600 in the mounting groove 340, so that the mid-mounted motor 600 of the electric bicycle can be disassembled or repaired by simply removing the adjusting rod 330 when repairing or replacing it, thereby improving the convenience of repairing and replacing the mid-mounted motor 600.

[0055] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. An electric bicycle with a mid-mounted motor, characterized in that: It comprises a front frame (100), a rear frame (200) and a connecting seat (300); The connecting seat (300) includes a main body (310), a bottom plate (320), and an adjusting rod (330); a connecting assembly is provided on the main body (310); the connecting assembly is detachably connected to the front frame (100) or the rear frame (200); and the main body (310) is fixedly connected to the rear frame (200) or the front frame (100); The bottom plate (320) is fixedly connected to the main body (310), the adjusting rod (330) is arranged between the main body (310) and the bottom plate (320), and is matched with the main body (310) and the bottom plate (320) to form a mounting groove (340), and the setting position of the adjusting rod (330) on the main body (310) and the bottom plate (320) is adjustable; A central motor (600) is provided in the installation slot (340), and a positioning assembly is provided in the installation slot (340), the positioning assembly being positioned and matched with the central motor (600).

2. The electric bicycle with a mid-motor as claimed in claim 1, characterized in that: The positioning assembly includes a positioning groove (370) and a positioning protrusion (360), wherein the positioning groove (370) is provided on the inner wall of the mounting groove (340), and the positioning protrusion (360) is provided on the motor housing of the central motor (600); or, the positioning groove (370) is provided on the motor housing of the central motor (600), and the positioning protrusion (360) is provided on the inner wall of the mounting groove (340), and the positioning protrusion (360) is positioned and matched with the positioning groove (370).

3. The electric bicycle with a mid-motor as claimed in claim 2, characterized in that: The side of the connecting seat (300) opposite to the positioning protrusion (360) or the positioning groove (370) is in an open shape, and a sealing cover (350) is hingedly connected to the main body (310) or the bottom plate (320) near one end of the opening, and a locking buckle (351) is provided at the other end of the sealing cover (350), and a locking block (352) is provided on the bottom plate (320) or the main body (310), and the locking block (352) is locked with the locking buckle (351).

4. The electric bicycle with a mid-motor according to any one of claims 1 to 3, characterized in that: A transmission assembly is provided on the front frame (100) or the rear frame (200), a reduction box (700) is embedded in the main body (310), one end of the reduction box (700) is connected to the installation slot (340) or extends into the installation slot (340), and when the central motor (600) is arranged in the installation slot (340), the motor shaft of the central motor (600) is connected to the reduction box (700).

5. The electric bicycle with a mid-motor according to any one of claims 1 to 3, characterized in that: A guide rail (390) is provided on a side of the main body (310) close to the mounting groove (340), and a plurality of positioning holes (380) are provided on a side of the bottom plate (320) close to the mounting groove (340); or a plurality of positioning holes (380) are provided on a side of the main body (310) close to the mounting groove (340), and a guide rail (390) is provided on a side of the bottom plate (320) close to the mounting groove (340), one end of the adjusting rod (330) is provided in the guide rail (390) and can slide in the guide rail (390), and the other end is plugged into and matched with the positioning hole (380).

6. The electric bicycle with a mid-motor as claimed in claim 5, characterized in that: The adjusting rod (330) includes a fixed rod (331) and a telescopic rod (332). A sliding protrusion (334) is provided at the end of the fixed rod (331). The sliding protrusion (334) is provided in the guide rail (390) and can slide in the guide rail (390). The telescopic rod (332) is connected to the other end of the fixed rod (331). A plug-in protrusion (333) is provided on the other end of the telescopic rod (332). The plug-in protrusion (333) is plugged into and matched with the positioning hole (380).

7. The electric bicycle with a mid-motor according to any one of claims 1 to 3, characterized in that: The connection assembly comprises a mortise and tenon groove (500) and a mortise and tenon block (400), wherein the mortise and tenon groove (500) is provided on the outer wall of the main body (310), and the mortise and tenon block (400) is provided on the front frame (100) or the rear frame (200); or the mortise and tenon block (400) is provided on the outer wall of the main body (310), and the mortise and tenon groove (500) is provided on the front frame (100) or the rear frame (200), and the mortise and tenon block (400) and the mortise and tenon groove (500) are connected by mortise and tenon.

8. The electric bicycle with a mid-motor as claimed in claim 7, characterized in that: The mortise and tenon block (400) is provided with a first through-hole (410) penetrating the mortise and tenon block (400), and a second through-hole (510) penetrating the main body (310) provided in the mortise and tenon groove (500), or the front frame (100) or the rear frame (200) is provided with. The second through-hole (510) penetrating the main body and communicating with the mortise and tenon groove (500) is also provided. A connecting screw is also included. The end of the connecting screw extends from one of the second through-holes (510), passes through the first through-hole (410), and extends from the other second through-hole (510), and is sleeved with a fixing nut screwed thereto.

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