Riding power measuring device

Abstract

The utility model relates to the technical field of power measurement, in particular to a riding power measuring device which comprises a main shaft, a chip and a spiral strain gauge. The main shaft is of a cylindrical structure, and one end of the main shaft is provided with a connecting structure used for being connected with external equipment. The spiral strain gauge is fixedly arranged at the end, close to the connecting structure, of the main shaft and used for detecting the strain condition of the main shaft in the riding process and sending measured strain data to the chip, and output power and power data are obtained through calculation of the chip and wirelessly transmitted to a user side. The spiral strain gauge is tightly attached to the main shaft, tiny strain changes in the riding process can be accurately captured, and accurate motion feedback is provided for a rider in combination with the computing power of a high-performance chip and real-time output power and power data.

Description

Technical Field

[0001] This application relates to the field of power measurement technology, and in particular to a cycling power measurement device. Background Technology

[0002] A cycling power meter is a device used to measure the power output generated by a cyclist during cycling. This device collects parameters such as the torque applied to the bicycle pedals and the pedaling time, calculates the power value, and displays it.

[0003] The technology of cycling power meters was applied to cycling in the late 1980s and tested in professional cycling competitions. In the mid-1990s, while professionals occasionally used such devices, they remained inaccessible to the general public due to price and technical limitations. However, about 20 years ago, the technology began to be widely used in cycling training and competition. The US national team first used power meters as a team in the 1994 DuPont Tour, and mountain bikes also used power meters for the first time in a test event held at the 1995 Atlanta Olympics.

[0004] The basic principle of a cycling power measurement device is to collect parameters such as the torque applied by the athlete to the bicycle pedals and the pedaling time during cycling. These parameters are then input into a microprocessor chip inside the device for calculation to obtain a power value. Power refers to the work or energy produced over a period of time, and the calculation formula is usually power = torque × rotational speed. Cycling power measurement devices transmit data wirelessly and can be paired with devices such as bicycle speedometers, smartphones, or smartwatches to provide athletes with real-time feedback and allow for more precise analysis of cycling performance.

[0005] Despite significant advancements in existing technologies, current cycling power measurement devices still have some drawbacks and limitations in terms of measurement accuracy, installation and maintenance, compatibility and portability, cost and price, and user experience. Utility Model Content

[0006] The purpose of this application is to provide a cycling power measurement device to solve at least one of the technical problems existing in the prior art.

[0007] To solve the above-mentioned technical problems, this application provides a cycling power measuring device, including a main shaft, a chip, and a spiral strain gauge;

[0008] The main shaft has a cylindrical structure, and one end of it is provided with a connection structure for connecting to external equipment.

[0009] The spiral strain gauge is fixedly mounted on one end of the main shaft near the connecting structure. It is used to detect the strain of the main shaft during riding, and send the measured strain data to the chip. The chip then calculates the output force and power data and wirelessly transmits it to the user terminal.

[0010] Furthermore, it also includes batteries;

[0011] The battery is electrically connected to the chip and the helical strain gauge and provides electrical energy to the chip and the helical strain gauge.

[0012] Furthermore, it also includes an outer protective shell;

[0013] The outer protective shell is disposed on the main shaft to wrap and protect a portion of the main shaft.

[0014] The battery, the chip, and the helical strain gauge are disposed inside the outer casing.

[0015] Furthermore, it also includes a charger;

[0016] The charger is housed inside the outer casing and is electrically connected to the battery.

[0017] Furthermore, the charger is provided with a charging port;

[0018] The outer casing has a charging hole at the position corresponding to the charging port, so that the charging port is exposed for connection to an external power source for charging.

[0019] Furthermore, the outer casing includes a top cover and a main body;

[0020] The top cover and the main body are connected by fasteners.

[0021] Furthermore, it also includes support pieces;

[0022] The support plate is disposed inside the outer protective shell and is provided with a connection hole;

[0023] The support piece is fixedly connected to the outer shell by fasteners passing through the connection hole;

[0024] The chip is disposed on the support plate.

[0025] Furthermore, the chip is ring-shaped and sleeved on the main shaft;

[0026] The chip has mounting holes;

[0027] The chip is fixedly connected to the outer casing via fasteners and the mounting holes.

[0028] Furthermore, the chip is also provided with clearance slots;

[0029] The clearance groove is positioned opposite to the connection hole, and the fasteners that connect the support piece to the outer shell pass through the clearance groove.

[0030] Furthermore, the spiral strain gauge is an integrated strain gauge, coiled on the main shaft.

[0031] Preferably, the spiral strain gauge is wound around the main shaft once.

[0032] By adopting the above technical solution, this application has the following beneficial effects:

[0033] (1) By tightly attaching the spiral strain gauge to the main shaft, it can accurately capture the minute strain changes during riding. Combined with the computing power of the high-performance chip, it can output force and power data in real time, providing accurate motion feedback for the rider.

[0034] (2) The outer shell design not only provides effective physical protection for the internal components and prevents the external environment from affecting the measurement accuracy, but also ensures the stability of the device and extends its service life through reasonable structural design (such as the fastener connection between the top cover and the main body).

[0035] (3) The built-in battery and charger configuration enables the device to power itself and easily connect to an external power source for charging through the charging port on the outer casing, simplifying the user's operation process and improving the ease of use.

[0036] (4) The clever design of the support plate and the chip, especially the chip adopting a ring structure and setting a clearance groove, not only saves space, but also ensures that all components can be installed firmly and compactly in the outer shell, improving the compactness and stability of the overall structure.

[0037] (5) The integrated spiral strain gauge is coiled on the main shaft, which not only simplifies the installation process, but also improves the measurement efficiency and data reliability due to its good strain transmission performance. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 A schematic diagram of the cycling power measurement device from a head-up view.

[0040] Figure 2 A three-dimensional structural diagram of a cycling power measurement device;

[0041] Figure 3 A top-down view of the structure of the cycling power measurement device;

[0042] Figure 4 A schematic diagram of the cycling power measurement device from a head-up view after removing the outer casing;

[0043] Figure 5 A top-down view of the cycling power measurement device after removing the outer casing.

[0044] Figure 6 A top-down structural diagram of the chip and its support sheet;

[0045] Figure 7 This is a schematic diagram of the chip's structure from a top-down view.

[0046] Figure 8 A schematic diagram of the structure of the support piece from a top-down view;

[0047] Figure 9 A schematic diagram of a spiral strain gauge mounted on the main shaft.

[0048] Figure label:

[0049] 1-Main shaft; 2-Chip; 3-Helical strain gauge; 4-Connecting structure; 5-Battery; 6-Outer shell; 7-Charger; 8-Charging port; 9-Charging hole; 10-Top cover; 11-Main body; 12-Support plate; 13-Connecting hole; 14-Assembly hole; 15-Allowing groove; 16-Fastener. Detailed Implementation

[0050] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed in this application to further explain the specific application content, and these settings can be combined or used in conjunction with each other.

[0054] The present application will be further explained below with reference to specific implementation methods.

[0055] like Figure 4 As shown, this embodiment provides a cycling power measurement device, which includes a main shaft 1, a chip 2, and a spiral strain gauge 3;

[0056] The main shaft 1 is a cylindrical structure, and one end of it is provided with a connection structure 4 for connecting with external equipment;

[0057] The spiral strain gauge 3 is fixedly mounted on the main shaft 1 at one end near the connecting structure 4. It is used to detect the strain of the main shaft 1 during riding and send the measured strain data to the chip 2. The chip 2 calculates the output force and power data and transmits it wirelessly to the user terminal.

[0058] The cycling power measuring device disclosed in this application has a main shaft 1 connected to a bicycle via a connecting structure 4. When the user rides, the main shaft 1 is strained due to the pedaling, and this strain is detected at the spiral strain gauge 3. The chip 2 processes and transmits the detected data, so that the user can query data such as the power during cycling on the user's end.

[0059] like Figure 4 As shown, as a further embodiment of this application, a battery 5 is also included;

[0060] The battery 5 is electrically connected to the chip 2 and the spiral strain gauge 3 and provides power to the chip 2 and the spiral strain gauge 3.

[0061] In a preferred embodiment of this application, the battery 5 is an embedded lithium battery.

[0062] like Figure 1-3As shown, as a further embodiment of this application, an outer protective shell 6 is also included;

[0063] The outer protective shell 6 is disposed on the main shaft 1 to wrap and protect a portion of the main shaft 1.

[0064] The battery 5, the chip 2, and the spiral strain gauge 3 are disposed inside the outer casing 6.

[0065] like Figure 2 , 4 As shown, as a further embodiment of this application, a charger 7 is also included;

[0066] The charger 7 is disposed inside the outer casing 6 and is electrically connected to the battery 5.

[0067] like Figure 4 As shown, as a further embodiment of this application, the charger 7 is provided with a charging port 8;

[0068] The outer casing 6 has a charging hole 9 at the position corresponding to the charging port 8, so that the charging port 8 is exposed to the outside for connection with an external power source for charging.

[0069] like Figure 2 As shown, as a further embodiment of this application, the charging port 8 is a magnetic contact charging port.

[0070] like Figure 2 As shown, as a further embodiment of this application, the outer shell 6 includes an upper cover 10 and a main body 11;

[0071] The upper cover 10 and the main body 11 are connected by fasteners 16.

[0072] like Figure 4-6 As shown in Figures 8 and 9, as a further embodiment of this application, a support piece 12 is also included;

[0073] The support piece 12 is disposed inside the outer shell 6 and is provided with a connection hole 13;

[0074] The support piece 12 is fixedly connected to the outer shell 6 by a fastener 16 passing through the connection hole 13;

[0075] The chip 2 is disposed on the support piece 12.

[0076] like Figure 7 As shown, in a further embodiment of this application, the chip 2 is ring-shaped and sleeved on the main shaft 1;

[0077] The chip 2 is provided with mounting holes 14;

[0078] The chip 2 is fixedly connected to the outer casing 6 via fastener 16 and the mounting hole 14.

[0079] like Figure 5-7 As shown, as a further embodiment of this application, the chip 2 is also provided with a clearance groove 15;

[0080] The position of the clearance groove 15 is opposite to the position of the connection hole 13, and the fastener 16 that connects the support piece 12 to the outer shell 6 passes through the clearance groove 15.

[0081] In addition, the clearance groove 15 can also serve as a positioning and limiting function.

[0082] like Figure 5 As shown, in a preferred embodiment of this application, the fastener 16 that passes through the clearance groove 15 and connects the support piece 12 and the outer shell 6 is the same fastener 16 that connects the upper cover 10 and the main body 11.

[0083] like Figure 9 As shown, as a further embodiment of this application, the spiral strain gauge 3 is an integrated strain gauge, which is coiled on the main shaft 1.

[0084] like Figure 9 As shown, in a preferred embodiment of this application, the spiral strain gauge 3 is wound around the main shaft 1 once.

[0085] Existing technology typically involves attaching multiple strain gauges to several planes on the pedal shaft. This requires first processing a portion of the pedal shaft into two parallel planes, and then attaching the strain gauges to each plane.

[0086] Compared to conventional strain gauges, the spiral strain gauge 3 disclosed in this application can receive force feedback from 360 degrees, thus more accurately measuring force changes at each angle. In other words, the spiral strain gauge 3 can detect force changes from different directions, and after comprehensive processing by the chip 2, it can obtain more accurate force data for the spindle 1. Furthermore, the spiral strain gauge 3 disclosed in this application can be directly attached to the spindle 1 without the need for machining a flat surface, reducing production difficulty and process costs.

[0087] By adopting the above technical solution, this application has the following beneficial effects:

[0088] (1) This cycling power measurement device achieves accurate measurement of power during cycling by combining a main shaft 1, a chip 2, and a spiral strain gauge 3. The main shaft 1 connects to the bicycle and bears the force during cycling. The spiral strain gauge 3 can receive the strain information of the main shaft 1 from all directions. Compared with traditional strain gauges, its 360-degree force feedback receiving capability improves the accuracy of the measurement, ensuring that the force change at each angle can be accurately captured. The chip 2 is responsible for processing this strain data, calculating the output force and power, and transmitting it to the user terminal wirelessly, so that the user can view the cycling data in real time.

[0089] (2) The device also integrates components such as battery 5, outer casing 6 and charger 7, which enhances its practicality and durability. Battery 5 provides power to the device and ensures long-term use; outer casing 6 protects key components from external damage; charger 7 facilitates charging of battery 5 and maintains the normal operation of the device. The design of fasteners 16, support plates 12 and clearance grooves 15 optimizes the internal structure of the device, making the connection of each component stable and easy to assemble and maintain.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cycling power measuring device, characterized in that, Includes the main shaft, chip, and spiral strain gauge; The main shaft has a cylindrical structure, and one end of it is provided with a connection structure for connecting to external equipment. The spiral strain gauge is fixedly mounted on one end of the main shaft near the connecting structure. It is used to detect the strain of the main shaft during riding, and send the measured strain data to the chip. The chip then calculates the output force and power data and wirelessly transmits it to the user terminal.

2. The cycling power measuring device according to claim 1, characterized in that, It also includes batteries; The battery is electrically connected to the chip and the helical strain gauge and provides electrical energy to the chip and the helical strain gauge.

3. The cycling power measuring device according to claim 2, characterized in that, It also includes the outer casing; The outer protective shell is disposed on the main shaft to wrap and protect a portion of the main shaft. The battery, the chip, and the helical strain gauge are disposed inside the outer casing.

4. The cycling power measuring device according to claim 3, characterized in that, It also includes a charger; The charger is housed inside the outer casing and is electrically connected to the battery.

5. The cycling power measuring device according to claim 4, characterized in that, The charger is equipped with a charging port; The outer casing has a charging hole at the position corresponding to the charging port, so that the charging port is exposed for connection to an external power source for charging.

6. The cycling power measuring device according to claim 3, characterized in that, The outer casing includes a top cover and a main body; The top cover and the main body are connected by fasteners.

7. The cycling power measuring device according to claim 3, characterized in that, It also includes a support plate; The support plate is disposed inside the outer protective shell and is provided with a connection hole; The support piece is fixedly connected to the outer shell by fasteners passing through the connection hole; The chip is disposed on the support plate.

8. The cycling power measuring device according to claim 7, characterized in that, The chip is ring-shaped and is sleeved on the main shaft; The chip has mounting holes; The chip is fixedly connected to the outer casing via fasteners and the mounting holes.

9. The cycling power measuring device according to claim 7, characterized in that, The chip is also provided with a clearance groove; The clearance groove is positioned opposite to the connection hole, and the fasteners that connect the support piece to the outer shell pass through the clearance groove.

10. The cycling power measuring device according to claim 1, characterized in that, The spiral strain gauge is an integrated strain gauge, coiled on the main shaft.

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