Sit-and-reach testing device

Abstract

The utility model discloses a sit-and-reach testing device which comprises a detection mechanism, a guide rail, a foot plate fixedly connected with the guide rail and a push plate slidably connected with the guide rail, the guide rail is further fixedly connected with a reset piece for resetting the push plate, the detection mechanism comprises a counter and a calibration assembly, and when the push plate is reset, the counter is connected with the calibration assembly. And the calibration component is used for returning the counter to zero. The sit-and-reach testing device is high in testing accuracy and consistency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sports equipment, in particular to a sitting forward bending test device. BACKGROUND

[0002] Sitting forward bending is a physical fitness test project in middle and primary schools. The test purpose is to measure the activity range of trunk, waist, hip and other joints in a static state, mainly reflecting the flexibility and elasticity of joints, ligaments and muscles of these parts and the development level of body flexibility. A sitting forward bending device is needed during testing to facilitate testing.

[0003] The existing sitting forward bending test device usually includes a fixed foot plate and a slidable push plate. The user completes the test by pushing the push plate. In order to ensure the accuracy of the test, a common method is to install a scale or an electronic sensor on the push plate to record the distance of the push plate movement.

[0004] The patent with publication number CN204582499U discloses a new sitting forward bending tester, which completely solves the problem of damage caused by resistance during motor transmission. This balancer can adjust the force at will and has a return buffer function, which is very good.

[0005] However, in specific application, the test result deviation will become larger and larger after repeated testing, and the test result of the latter will be better and better, which affects the fairness and accuracy of the test. CONTENT OF THE INVENTION

[0006] Therefore, the present application provides a sitting forward bending test device, which resets the counter after each test, improving the accuracy and consistency of the test.

[0007] The present application provides a sitting forward bending test device, which includes a detection mechanism, a guide rail, a foot plate fixedly connected with the guide rail, a push plate slidingly connected with the guide rail, and a reset member fixedly connected with the guide rail and configured to reset the push plate. The detection mechanism includes a counter and a calibration assembly. When the push plate is reset, the calibration assembly resets the counter.

[0008] By using the above technical solution, the reset member and the calibration assembly are used in cooperation to ensure that the counter is in a reset state before each test, avoiding the problem of inaccurate test caused by accumulated error of the counter. The tester only needs to push the push plate to perform the sitting forward bending test. After the test is completed, the push plate will be automatically reset, without the need for manual operation or adjustment of the counter, simplifying the test process.

[0009] In some embodiments, the calibration assembly comprises a reset sheet and a sensing piece, the reset sheet is fixedly connected with the push plate, the sensing piece is fixedly connected with the guide rail, when the push plate is reset, the sensing piece generates a reset signal after sensing the reset sheet, and the counter is reset to zero.

[0010] In some embodiments, the calibration assembly further comprises a processor, which resets the counter to zero after receiving the reset signal.

[0011] By adopting the above technical solution, when the push plate is reset to the initial reset position under the action of the reset piece, the reset sheet will contact or be within the detectable range of the sensing piece. At this time, the sensing piece will detect the presence of the reset sheet and generate a reset signal. The reset signal will be transmitted to the counter or the control system connected thereto. After receiving the reset signal, the control system will trigger the zero reset operation of the counter, and reset the reading of the counter to zero. Through the cooperation of the reset sheet and the sensing piece, the complete reset of the push plate can be more accurately detected. This avoids the problem of inaccurate test caused by incomplete reset of the push plate.

[0012] In some embodiments, one end of the reset piece is fixed to the guide rail, and the other end is connected with the push plate, and the guide rail is provided with a positioning piece, when the push plate is reset, the push plate abuts against the positioning piece.

[0013] By adopting the above technical solution, in the process of resetting the push plate, the reset piece will gradually release the stored elastic potential energy and push the push plate to move to the initial position. When the push plate abuts against the positioning piece, the reset process ends. At this time, the calibration assembly detects the abutting state of the push plate and the positioning piece, and generates a reset signal. After the processor receives the signal, it will execute the preset zero reset program to reset the current reading of the counter to zero.

[0014] In some embodiments, the detection mechanism further comprises a first grooved wheel and a second grooved wheel arranged at intervals, the first grooved wheel and the second grooved wheel are connected by a synchronous rope to realize synchronous rotation, and the position of the synchronous rope between the first grooved wheel and the second grooved wheel is fixedly connected with the push plate.

[0015] By adopting the above technical scheme, the synchronous rope is fixedly connected with the push plate at a certain position between the first grooved wheel and the second grooved wheel. When the push plate moves along the guide rail, it pulls the synchronous rope, thereby driving the first grooved wheel and the second grooved wheel to rotate synchronously. The rotation of the grooved wheel can be monitored by a sensor (such as an optical sensor, a Hall sensor, etc.) connected thereto. The sensor records the rotation angle or the number of turns of the grooved wheel, thereby indirectly calculating the moving distance of the push plate. Since the first grooved wheel and the second grooved wheel rotate synchronously through the synchronous rope, the angles or the number of turns of their rotation are equal. Therefore, no matter which direction the push plate moves, the displacement thereof can be accurately measured by monitoring the rotation of any one of the grooved wheels. The present scheme further improves the measurement accuracy, reliability and maintainability, and also enhances the adaptability and flexibility of the device.

[0016] In some embodiments, the synchronous rope is connected with an elastic member, which maintains a stable tension of the synchronous rope.

[0017] By adopting the above technical scheme, the elastic member (such as a spring, an elastic sheet, etc.) is connected with the synchronous rope, which functions to maintain the tension state of the synchronous rope. When the push plate moves and pulls the synchronous rope, the elastic member provides the necessary tension. Since the elastic member has a certain elastic range, it can absorb and buffer the impact and vibration generated when the push plate moves to a certain extent, thereby maintaining the stability and accuracy of the synchronous rope. The introduction of the elastic member enables the synchronous rope to maintain a stable tension, thereby reducing the measurement error caused by the slack or excessive tightness of the rope.

[0018] In some embodiments, the first grooved wheel or the second grooved wheel is drivingly connected with an encoder, which transmits the rotation data of the first grooved wheel or the second grooved wheel to the counter through a signal.

[0019] By adopting the above technical solution, the encoder is drivingly connected with the first or second grooved wheel in some way (such as direct connection, gear transmission, etc.). When the grooved wheel rotates, the encoder also rotates and generates corresponding signals. The signals (such as digital signals or pulse signals) generated by the encoder are transmitted to the counter through wires or other communication media. The counter is responsible for receiving, processing and storing these signals to update the displacement reading of the push plate. During signal transmission, signal amplifiers, filters and other electronic components may be used to enhance the stability and anti-interference ability of the signals. The selection and configuration of these components need to be based on actual testing needs. The encoder can accurately capture the rotation data of the grooved wheel and convert it into digital signals or pulse signals for transmission and processing. This enables the test device to more accurately measure the displacement of the push plate, thereby improving the accuracy of the test. The signals generated by the encoder are real-time, so the counter can update the displacement reading of the push plate in real time. This allows users to view the displacement changes during the test at any time, improving the real-time performance and dynamic response capability of the test.

[0020] In some embodiments, the encoder is connected with a second grooved wheel away from one side of the push plate.

[0021] In some embodiments, a display is further included, and when the push plate slides away from the reset position along the guide rail, the display displays the distance of the push plate from the reset position in real time.

[0022] By adopting the above technical solution, the display can display the displacement data of the push plate in real time, allowing users to intuitively understand the displacement changes during the test, thereby improving the transparency and user experience of the test. The display not only displays the displacement data in real time, but also records the data for subsequent analysis and processing.

[0023] In some embodiments, the display is wirelessly connected with the detection mechanism.

[0024] By adopting the above technical solution, after the detection mechanism captures the displacement data of the push plate, it sends these data to the display wirelessly. After receiving the data, the display processes it as necessary (such as format conversion, unit conversion, etc.) and presents it in an intuitive way (such as numbers, graphs, etc.). Wireless connection makes the layout between the display and the detection mechanism more flexible, and users can adjust the position of the display according to actual needs to better observe the test results. By adopting wireless connection, data transmission between the display and the detection mechanism is more flexible, convenient and secure.

[0025] In summary, the convenient operation cleaning brush of the present application has at least one of the following beneficial technical effects:

[0026] 1. Ensures that the counter is in the zero state before each test, avoiding the problem of inaccurate test caused by the cumulative error of the counter.

[0027] 2. Can display the displacement data of the push plate in real time, enabling the user to intuitively understand the displacement change in the test process, thereby improving the transparency of the test and the user experience.

[0028] 3. By adopting a wireless connection mode, the data transmission between the display and the detection mechanism is more flexible, convenient and secure. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic diagram of the sitting body forward bending test device of the present application;

[0030] Figure 2 is a structural schematic diagram of the internal structure of the sitting body forward bending test device of the present application;

[0031] Figure 3 is a structural schematic diagram of the first groove wheel end of the sitting body forward bending test device of the present application;

[0032] Figure 4 is a structural schematic diagram of the second groove wheel end of the sitting body forward bending test device of the present application;

[0033] Figure 5 is a circuit diagram of the reset module of the present application.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1. Guide rail; 11, display rack; 2, foot plate; 3, push plate; 31, push plate frame; 4, display; 5, door closer; 51, main body; 52, pull rope; 6, detection mechanism; 61, calibration assembly; 611, sensing piece; 612, reset sheet; 62, first groove wheel; 63, synchronous rope; 64, spring; 65, second groove wheel; 66, rotary encoder. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will make further detailed description of the present application in combination with the drawings. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood in the specific meaning of the utility model according to the specific circumstances.

[0039] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0040] The embodiments of the utility model will be described in detail below with reference to the drawings.In the case of no conflict, the features in the following examples can be combined with each other.

[0041] Example 1

[0042] Please refer to Figures 1-5 The sitting body forward bending test device provided by the embodiments of the present application includes a detection mechanism 6, a guide rail 1, a foot plate 2 fixedly connected with the guide rail 1, a push plate 3 slidingly connected with the guide rail 1, and a reset member connected with the guide rail 1 for resetting the push plate 3, and the reset member is a door closer 5.The detection mechanism 6 includes a counter and a calibration assembly 61, and the calibration assembly 61 resets the counter when the push plate 3 is reset.A display 4 is also arranged on the side of the guide rail 1 away from the push plate 3, and the display 4 displays the distance of the push plate 3 from the reset position in real time when the push plate 3 slides along the guide rail 1 from the reset position to the position away from the reset position.In order to be convenient, the display 4 is wirelessly connected with the detection mechanism 6, and in some embodiments, the display 4 can also be arranged in wired connection according to specific cost and other aspects.

[0043] Please refer to Figures 2-4 The push plate 3 is fixedly connected with a push plate frame 31, and the push plate frame 31 is slidingly connected with the guide rail 1.The calibration assembly 61 includes a reset sheet 612, a sensing member 611 and a processor, the reset sheet 612 is fixedly connected with the push plate frame 31, and the sensing member 611 is fixedly connected with the guide rail 1.When the push plate 3 is reset, the sensing member 611 generates a reset signal after sensing the reset sheet 612 and transmits it to the processor, and the processor resets the counter after receiving the reset signal.

[0044] The door closer 5 comprises a main body 51 fixed to the guide rail 1 and a pull rope 52 connected at one end to the main body 51 and at the other end to the push plate 3, the pull rope 52 always keeps the push plate 3 in the direction of the main body 51 to provide a reset force.

[0045] The detection mechanism 6 further comprises a first groove wheel 62 and a second groove wheel 65 arranged at intervals, the first groove wheel 62 and the second groove wheel 65 are rotationally connected to the two ends of the guide rail 1, the first groove wheel 62 and the second groove wheel 65 are connected by a synchronous rope 63 to realize synchronous rotation, the synchronous rope 63 is fixedly connected to the push plate frame 31 at a position between the first groove wheel 62 and the second groove wheel 65.

[0046] Please refer to Figure 4 The synchronous rope 63 is connected with an elastic member, the elastic member keeps the synchronous rope 63 in stable tension. The second groove wheel 65 end of the guide rail 1 is provided with a rotary encoder 66 and a display frame 11, the display 4 is inserted into the groove on the display frame 11. The second groove wheel 65 rotates to drive the rotary encoder 66 to rotate, the rotary encoder 66 converts the mechanical displacement into an electrical signal through photoelectric conversion, the rotary encoder 66 transmits the rotation data of the second groove wheel 65 to the processor, the processor converts the signal into displacement data of the push plate 3 and sends it to the counter, the counter displays the displacement data through the display 4.

[0047] Please refer to Figure 5 The sensing member 611 in the embodiment is a photoelectric sensing switch SX674, and the output end of the photoelectric sensing switch SX674 is directly connected to the MCU interrupt pin PB8 through the upper resistor R25.

[0048] The working principle of the embodiment is as follows: the push plate 3 is pushed along the guide rail 1, the push plate 3 drives the first groove wheel 62 and the second groove wheel 65 to rotate synchronously through the synchronous rope 63, the second groove wheel 65 drives the rotary encoder 66 to rotate, the signal of the rotary encoder 66 is converted into displacement data of the sliding of the push plate 3 by the processor and transmitted to the counter, and the displacement data of the push plate 3 is displayed by the display 4. After the test is completed, the push plate 3 is reset to the initial reset position under the action of the door closer 5, when the push plate 3 does not return to the reset position, the reset sheet 612 does not insert into the sensing groove of the sensing member 611, and the MCU interrupt pin PB8 is high; when the push plate 3 returns to the reset position, the reset sheet 612 inserts into the sensing groove of the sensing member 611 (photoelectric sensing switch SX674), the sensing member 611 outputs a low level to generate a reset signal, and the MCU resets the counter to zero according to the reset signal, and the next user operation starts counting again, ensuring that the tester's data is accurate every time.

[0049] The existing structure of the existing sitting and lying body precursor test device causes the rotary encoder 66 to reverse after rotating forward, and cannot return to the same position. By installing a photoelectric reset switch at the starting end of the test device, when the user releases the device and it automatically returns to the starting position, the MCU receives the reset switch signal, and defines the position of the rotary encoder 66 as the zero starting point, thereby solving the disadvantage of relying on the rotary encoder 66 signal to determine the starting point position.

[0050] Embodiment 2

[0051] The difference between this embodiment and embodiment one is that the guide rail 1 is provided with a positioning member, and when the push plate 3 is reset, the push plate 3 abuts against the positioning member, thereby realizing the reliability and consistency of the reset position.

[0052] Embodiment 3

[0053] The difference between this embodiment and the above embodiments is that the sensing member 611 can also use a micro switch to realize the reset signal. The disadvantage is that the reset spring force of the micro switch itself cannot reset sometimes, and the mechanical life is limited.

[0054] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model. The utility model can also have various changes, modifications, replacements and modifications without departing from the spirit and scope of the utility model. These changes, modifications, replacements and modifications all fall within the scope of the utility model claimed.

Claims

1. A seated body flexion testing device, characterized by, Including detection mechanism, guide rail, foot plate fixedly connected with the guide rail, push plate in sliding connection with the guide rail, the guide rail is also connected with the reset piece that resets the push plate, wherein, the detection mechanism includes counter and calibration assembly, when the push plate resets, the calibration assembly resets the counter.

2. The seated forward flexion test device of claim 1, wherein, The calibration assembly includes a reset sheet and a sensing element, the reset sheet is fixedly connected with the push plate, the sensing element is fixedly connected with the guide rail, when the push plate resets, the sensing element senses the reset sheet and generates a reset signal, and the counter is reset to zero.

3. The seated forward flexion test device of claim 2, wherein, The calibration assembly further includes a processor, which resets the counter to zero after receiving the reset signal.

4. The seated forward flexion test device of claim 1, wherein, One end of the reset piece is fixed to the guide rail, the other end is connected with the push plate, the guide rail is provided with a positioning element, when the push plate resets, the push plate abuts against the positioning element.

5. The seated forward flexion test device of claim 1, wherein, The detection mechanism further includes a first groove wheel and a second groove wheel arranged at intervals, the first groove wheel and the second groove wheel are connected by a synchronous rope to realize synchronous rotation, and the position of the synchronous rope between the first groove wheel and the second groove wheel is fixedly connected with the push plate.

6. The seated forward flexion test device of claim 5, wherein, The synchronous rope is connected with an elastic element, which maintains the stable tension of the synchronous rope.

7. The seated forward flexion test device of claim 5, wherein, The first groove wheel or the second groove wheel is drivingly connected with an encoder, and the encoder transmits the rotation data of the first groove wheel or the second groove wheel to the counter through a signal.

8. The seated forward flexion test device of claim 7, wherein, The encoder is connected with the second groove wheel away from the push plate.

9. The seated forward flexion test device of claim 1, wherein, It also includes a display, when the push plate slides away from the reset position along the guide rail, the display displays the distance between the push plate and the reset position in real time.

10. The seated forward flexion test apparatus of claim 9, wherein, The display is wirelessly connected with the detection mechanism.

Images