Speed monitoring system of electric bicycle and electric bicycle

Abstract

The utility model provides a speed monitoring system of an electric bicycle, the electric bicycle comprises a frame and wheels rotatably connected to the frame, and the speed monitoring system of the electric bicycle comprises a detection sheet, a speed acquisition device, a CPU and a display; the detection piece is fixedly connected to the wheel, the outline of the detection piece is cylindrical, the axis of the detection piece coincides with the axis of the wheel so that the detection piece can be driven by the wheel to rotate synchronously with the wheel, at least two detection marks are arranged on the end face of the detection piece, and the at least two detection marks are arranged in a circular array with the axis of the detection piece as the center. When the detection sheet is driven by a wheel to rotate, the moving track of the detection mark forms an annular detection area; the CPU is electrically connected with the speed acquisition device and the display respectively, and the speed acquisition device is fixedly connected to the frame and corresponds to the detection area. According to the invention, the scanning frequency of the speed acquisition device on the detection mark can be improved, so that the monitoring result is more accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycle manufacturing, and particularly relates to a speed monitoring system for an electric bicycle and an electric bicycle. Background Art

[0002] At present, for the monitoring of the running speed of an electric bicycle, the rotational speed information of a specific mark set on the wheel is collected by a speed acquisition device, and the linear speed of the wheel rotation is calculated through the rotational speed information. In the prior art, there is only one specific mark set on the wheel, and the speed acquisition device can collect the rotational speed information of the specific mark only when the specific mark rotates into the range that can be scanned by the speed acquisition device. In this way, when the wheel rotates one circle (the specific mark rotates one circle), the specific mark can only be effectively scanned by the speed acquisition device on a specific arc. When it is in other positions, the speed acquisition device cannot effectively collect its rotational speed. Therefore, there is a disadvantage that the scanning frequency of the speed acquisition device for the specific mark (the number of times the speed acquisition device scans the specific mark per unit time) is low, resulting in inaccurate monitoring results. Content of the Utility Model

[0003] The purpose of the utility model is to provide a speed monitoring system for an electric bicycle and an electric bicycle, which can improve the scanning frequency of the speed acquisition device for the detection mark, and further make the monitoring results more accurate and reliable.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A speed monitoring system for an electric bicycle, the electric bicycle includes a frame and a wheel rotatably connected to the frame, and the speed monitoring system of the electric bicycle includes: a detection piece, a speed acquisition device, a CPU, and a display;

[0006] The detection piece is fixedly connected to the wheel, the outer contour shape of the detection piece is cylindrical, and the axis coincides with the axis of the wheel, so as to make a synchronous rotational movement with the wheel under the drive of the wheel. At least two detection marks are arranged on the end face of the detection piece, and at least two of the detection marks are arranged in a circular array centered on the axis of the detection piece. When the detection piece rotates under the drive of the wheel, the running tracks of the detection marks form an annular detection area;

[0007] The CPU is electrically connected to the speed acquisition device and the display respectively. The speed acquisition device is fixedly connected to the vehicle frame and corresponds to the detection area, so that the speed acquisition device can collect the moving speed of any one of at least two of the detection marks in real time and send it to the CPU. The CPU calculates the linear speed of the wheel according to the moving speed of any one of at least two of the received detection marks and sends the linear speed value to the display for display.

[0008] Preferably, the detection mark is a long strip hole that penetrates the end faces on both axial sides of the detection piece and whose long axis extends along the radial direction of the detection piece.

[0009] Preferably, it further includes a mounting seat and a connecting screw;

[0010] The wheel has a hub. The mounting seat is fixedly installed on the hub, and a connecting screw hole matching the connecting screw is provided on the surface of the mounting seat facing away from the hub. A connecting through hole is provided on the detection piece. The connecting screw passes through the connecting through hole and is threadedly connected into the connecting screw hole.

[0011] Preferably, the number of the connecting screw holes is at least two. At least two of the connecting screw holes are arranged in a circular array centered on the axis of the wheel. The number of the connecting through holes is equal to the number of the connecting screw holes and corresponds one by one. The number of the connecting screws is equal to the number of the connecting screw holes and corresponds one by one.

[0012] Preferably, the wheel further includes a wheel shaft that is arranged inside the hub and whose end side extends out from the axial end face of the hub. A central hole is provided on the detection piece, so that the detection piece can be sleeved on the part of the wheel shaft that extends out from the axial end face of the hub through the central hole.

[0013] Preferably, it further includes a connecting rod and a connecting base;

[0014] One end of the connecting rod is fixedly connected to the vehicle frame, and the other end is in a free state. The connecting base is fixed to the free end of the connecting rod, and the speed acquisition device is detachably connected to the connecting base.

[0015] Preferably, it further includes a fixing screw;

[0016] A fixing screw hole matching the fixing screw is provided on the connecting base. A first fixing through hole is provided on the speed acquisition device. The fixing screw passes through the first fixing through hole and is threadedly connected into the fixing screw hole to fix the speed acquisition device on the connecting base.

[0017] Preferably, it further includes a fixing nut;

[0018] A second fixing through hole is provided on the speed acquisition device, and a fixing stud matching the fixing nut is provided on the connection base. The fixing stud passes through the second fixing through hole and extends from the side of the speed acquisition device facing away from the connection base. The fixing nut is threadedly connected to the part of the fixing stud extending from the side of the speed acquisition device facing away from the connection base to fix the speed acquisition device on the connection base.

[0019] Preferably, a first clamping groove is provided on the speed acquisition device, and a first clamping hook is provided on the connection base. The first clamping hook is clamped within the first clamping groove to fix the speed acquisition device on the connection base;

[0020] Alternatively, a second clamping hook is provided on the speed acquisition device, and a second clamping groove is provided on the connection base. The second clamping hook is clamped within the second clamping groove to fix the speed acquisition device on the connection base.

[0021] An electric bicycle includes a speed monitoring system of an electric bicycle having any of the above technical features.

[0022] The speed monitoring system of the electric bicycle of the present invention can improve the scanning frequency of the speed acquisition device for the detection marks by adopting the technical solution of providing at least two detection marks on the end face of the detection piece, and at least two of the detection marks are arranged in a circular array centered on the axis of the detection piece, thereby making the monitoring result more accurate and reliable. Description of the Drawings

[0023] Figure 1 is a schematic diagram of an embodiment of the speed monitoring system of the electric bicycle of the present invention;

[0024] Figure 2 is a circuit schematic diagram of the speed monitoring system of the electric bicycle of the present invention;

[0025] Figure 3 is Figure 1 a schematic diagram of the detection piece in

[0026] Figure 4 is Figure 1 a schematic diagram of the A-A cross-section in

[0027] Figure 5 is Figure 1 a schematic diagram of the B-B cross-section in (the first connection method between the speed acquisition device and the connection base)

[0028] Figure 6 is Figure 1Schematic diagram of the second connection method between the speed acquisition device and the connection base in

[0029] Figure 7 is Figure 1 Schematic diagram of the third connection method between the speed acquisition device and the connection base in

[0030] In the figure: 1 - vehicle frame; 2 - wheel; 3 - detection piece; 4 - speed acquisition device; 5 - CPU; 6 - display; 7 - detection mark; 8 - mounting seat; 9 - connecting screw; 10 - wheel hub; 11 - connecting screw hole; 12 - connecting through hole; 13 - wheel axle; 14 - center hole; 15 - connecting rod; 16 - connection base; 17 - fixing screw; 18 - fixing screw hole; 19 - first fixing through hole; 20 - first protrusion; 21 - second protrusion; 22 - fixing nut; 23 - second fixing through hole; 24 - fixing stud; 25 - first card slot; 26 - first catch. Specific implementation manners

[0031] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the speed monitoring system and electric bicycle of the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] Such as Figure 1 、 2As shown in the figure, a speed monitoring system for an electric bicycle. The electric bicycle includes a frame 1 and a wheel 2 rotatably connected to the frame 1. The speed monitoring system of the electric bicycle includes: a detection piece 3, a speed acquisition device 4, a CPU 5, and a display 6. The detection piece 3 is fixedly connected to the wheel 2. The outer contour shape of the detection piece 3 is cylindrical, and its axis coincides with the axis of the wheel 2, so as to make a rotational movement synchronous with the wheel 2 under the drive of the wheel 2. At least two detection marks 7 are provided on the end face of the detection piece 3. The at least two detection marks 7 are arranged in a circular array centered on the axis of the detection piece 3. When the detection piece 3 rotates under the drive of the wheel 2, the running track of the detection mark 7 forms an annular detection area (not shown in the figure). The CPU 5 is electrically connected to the speed acquisition device 4 and the display 6 respectively. The speed acquisition device 4 is fixedly connected to the frame 1 and corresponds to the detection area, so that the speed acquisition device 4 can collect the movement speed of any one of the at least two detection marks 7 in real time (the movement speed is the angular velocity or linear velocity of the rotation of the detection mark 7) and send it to the CPU 5. The CPU 5 calculates the linear velocity of the wheel 2 according to the movement speed of any one of the at least two detection marks 7 received, and sends the linear velocity value to the display 6 for display. Among them, the CPU 5 calculates the linear velocity of the wheel 2 according to the movement speed of the detection mark 7, which is not the invention point of the present utility model, but an existing technology. The present utility model only utilizes this existing technology and does not intend to improve it. Therefore, this calculation method will not be elaborated here one by one. By adopting the above technical solution, the scanning frequency of the speed acquisition device 4 for the detection mark 7 can be improved, and thus the monitoring result can be more accurate and reliable.

[0033] In actual production, such as Figure 1 , 3 As shown, the detection mark 7 is a long strip hole that penetrates the end faces on both axial sides of the detection piece 3, and the long axis extends along the radial direction of the detection piece 3. It should be noted that the shape of the long strip hole can be rectangular or trapezoidal, but is not limited thereto. This can make the radial width of the detection area larger, making it easier for the speed acquisition device 4 to accurately correspond to it. Furthermore, it can prevent the speed acquisition device 4 from being unable to collect the movement speed of the detection mark 7 due to a deviation in the corresponding position with the detection area.

[0034] The connection method between the detection piece 3 and the wheel 2 can be as shown in Figure 1 , 3 , 4. It further includes a mounting seat 8 and a connecting screw 9. The wheel 2 has a hub 10. The mounting seat 8 is fixedly installed on the hub 10, and a connecting screw hole 11 matching the connecting screw 9 is provided on the surface of the mounting seat 8 facing away from the hub 10. A connecting through hole 12 is provided on the detection piece 3. The connecting screw 9 passes through the connecting through hole 12 and is threadedly connected into the connecting screw hole 11. In actual production, such as Figure 1 , 3As shown in the figure, the wheel 2 further includes a wheel axle 13 that is inserted into the hub 10 and whose end side extends from the axial end face of the hub 10. A central hole 14 is provided on the detection piece 3 so that the detection piece 3 can be sleeved on the part of the wheel axle 13 that extends from the axial end face of the hub 10 through the central hole 14. This can avoid interference between the detection piece 3 and the wheel axle 13 during the installation of the detection piece 3.

[0035] Furthermore, the number of connecting screw holes 11 is at least two, and at least two connecting screw holes 11 are arranged in a circular array centered on the axis of the wheel 2. The number of connecting through holes 12 is equal to the number of connecting screw holes 11 and they correspond one by one. The number of connecting screws 9 is equal to the number of connecting screw holes 11 and they correspond one by one. This can ensure the firmness and stability of the installation of the detection piece 3.

[0036] As an implementable manner, as Figure 1 shown, it further includes a connecting rod 15 and a connecting base 16. One end of the connecting rod 15 is fixedly connected to the vehicle frame 1, and the other end is in a free state. The connecting base 16 is fixed to the free end of the connecting rod, and the speed acquisition device 4 is detachably connected to the connecting base 16.

[0037] The following introduces several optional connection methods between the speed acquisition device 4 and the connecting base 16:

[0038] The first method

[0039] As Figure 5 shown, it further includes a fixing screw 17. A fixing screw hole 18 matching the fixing screw 17 is provided on the connecting base 16, and a first fixing through hole 19 is provided on the speed acquisition device 4. The fixing screw 17 passes through the first fixing through hole 19 and is threadedly connected to the fixing screw hole 18 to fix the speed acquisition device 4 on the connecting base 16. In actual production, as shown in Figure 5 , a first protrusion 20 is provided on the connecting base 16, the first fixing through hole is provided on the first protrusion 20, and at the same time, a second protrusion 21 is provided on the connecting base 16, and the fixing screw hole 18 is provided on the second protrusion 21. This can ensure the firmness of the installation of the speed acquisition device 4 on the connecting base 16, and at the same time, it is also convenient for the speed acquisition device 4 to be disassembled or installed.

[0040] The second method

[0041] As Figure 6As shown, it further includes a fixing nut 22. A second fixing through hole 23 is provided on the speed acquisition device 4, and a fixing stud 24 matching the fixing nut 22 is provided on the connecting base 16. The fixing stud 24 passes through the second fixing through hole 23 and extends from the side of the speed acquisition device 4 facing away from the connecting base 16. The fixing nut 22 is threadedly connected to the part of the fixing stud 24 extending from the side of the speed acquisition device 4 facing away from the connecting base 16 to fix the speed acquisition device 4 on the connecting base 16. In this way, the firmness of the installation of the speed acquisition device 4 on the connecting base 16 can be ensured, and at the same time, it is also convenient for the speed acquisition device 4 to be disassembled or installed.

[0042] The third method

[0043] As Figure 7 shown, a first card slot 25 is provided on the speed acquisition device 4, and a first catch 26 is provided on the connecting base 16. The first catch 26 is snapped into the first card slot 25 to fix the speed acquisition device 4 on the connecting base 16, wherein the first catch 26 is made of an elastic material; alternatively, a second catch (not shown in the figure) is provided on the speed acquisition device 4, and a second card slot (not shown in the figure) is provided on the connecting base 16. The second catch is snapped into the second card slot to fix the speed acquisition device 4 on the connecting base 16, wherein the second catch is made of an elastic material. By adopting such a method, it is convenient to install or disassemble the speed acquisition device 4.

[0044] To achieve the invention purpose, the present utility model further provides an electric bicycle, including the speed monitoring system of the electric bicycle described in any of the above embodiments.

[0045] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A speed monitoring system for an electric bicycle, the electric bicycle comprising a frame (1) and a wheel (2) rotatably connected to the frame (1), characterized in that: The speed monitoring system of the electric bicycle comprises: a detection piece (3), a speed acquisition device (4), a CPU (5) and a display (6); The detection piece (3) is fixedly connected to the wheel (2), the outer contour shape of the detection piece (3) is cylindrical, and the axis coincides with the axis of the wheel (2) to make a rotational movement synchronous with the wheel (2) under the drive of the wheel (2). At least two detection marks (7) are arranged on the end face of the detection piece (3), and at least two of the detection marks (7) are arranged in a circular array centered on the axis of the detection piece (3). When the detection piece (3) rotates under the drive of the wheel (2), the running track of the detection mark (7) forms an annular detection area; The CPU (5) is electrically connected to the speed acquisition device (4) and the display (6) respectively. The speed acquisition device (4) is fixedly connected to the frame (1) and corresponds to the detection area, so that the speed acquisition device (4) can collect the movement speed of any one of at least two detection marks (7) in real time and send it to the CPU (5). The CPU (5) calculates the linear speed of the wheel (2) according to the movement speed of any one of the at least two received detection marks (7), and sends the linear speed value to the display (6) for display.

2. The speed monitoring system of the electric bicycle according to claim 1, characterized in that: The detection mark (7) is a long hole that penetrates the end faces on both axial sides of the detection piece (3), and the long axis extends along the radial direction of the detection piece (3).

3. The speed monitoring system of the electric bicycle according to claim 1, characterized in that: It further comprises a mounting seat (8) and a connecting screw (9); The wheel (2) has a hub (10), the mounting seat (8) is fixedly installed on the hub (10), and a connecting screw hole (11) matching the connecting screw (9) is arranged on the surface of the mounting seat (8) facing away from the hub (10). A connecting through hole (12) is arranged on the detection piece (3), and the connecting screw (9) passes through the connecting through hole (12) and is threadedly connected into the connecting screw hole (11).

4. The speed monitoring system of the electric bicycle according to claim 3, characterized in that: The number of the connecting screw holes (11) is at least two, and at least two of the connecting screw holes (11) are arranged in a circular array centered on the axis of the wheel (2). The number of the connecting through holes (12) is equal to the number of the connecting screw holes (11) and corresponds one by one. The number of the connecting screws (9) is equal to the number of the connecting screw holes (11) and corresponds one by one.

5. The speed monitoring system of the electric bicycle according to claim 3, characterized in that: The wheel (2) further includes a wheel axle (13) that is disposed within the hub (10) and has an end side extending from an axial end face of the hub (10). A central hole (14) is provided on the detection piece (3) so that the detection piece (3) can be sleeved on a portion of the wheel axle (13) that extends from the axial end face of the hub (10) through the central hole (14).

6. The speed monitoring system for an electric bicycle according to any one of claims 1 to 5, characterized in that: It further includes a connecting rod (15) and a connecting base (16); One end of the connecting rod (15) is fixedly connected to the frame (1), and the other end is in a free state. The connecting base (16) is fixed to the free end of the connecting rod, and the speed acquisition device (4) is detachably connected to the connecting base (16).

7. The speed monitoring system for an electric bicycle according to claim 6, characterized in that: It further includes a fixing screw (17); A fixing screw hole (18) matching the fixing screw (17) is provided on the connecting base (16), and a first fixing through hole (19) is provided on the speed acquisition device (4). The fixing screw (17) passes through the first fixing through hole (19) and is threadedly connected to the fixing screw hole (18) to fix the speed acquisition device (4) to the connecting base (16).

8. The speed monitoring system for an electric bicycle according to claim 6, characterized in that: It further includes a fixing nut (22); A second fixing through hole (23) is provided on the speed acquisition device (4), and a fixing stud (24) matching the fixing nut (22) is provided on the connecting base (16). The fixing stud (24) passes through the second fixing through hole (23) and extends from a side of the speed acquisition device (4) facing away from the connecting base (16). The fixing nut (22) is threadedly connected to a portion of the fixing stud (24) that extends from the side of the speed acquisition device (4) facing away from the connecting base (16) to fix the speed acquisition device (4) to the connecting base (16).

9. The speed monitoring system for an electric bicycle according to claim 6, characterized in that: A first card slot (25) is provided on the speed acquisition device (4), and a first catch (26) is provided on the connecting base (16). The first catch (26) is snapped into the first card slot (25) to fix the speed acquisition device (4) to the connecting base (16); Alternatively, a second catch is provided on the speed acquisition device (4), and a second card slot is provided on the connecting base (16). The second catch is snapped into the second card slot to fix the speed acquisition device (4) to the connecting base (16).

10. An electric bicycle, characterized in that: It includes the speed monitoring system for an electric bicycle according to any one of claims 1 to 9.

Images