Force value measuring device for pilates fitness equipment

Abstract

The utility model provides a pilates fitness equipment force value measuring device which comprises a force measuring plate and a plurality of springs, the two ends of the force measuring plate are fixedly connected with an end plate frame, the force measuring plate at least comprises a transverse plate and a vertical plate, the transverse plate and the vertical plate are alternately and fixedly connected to form a step shape, at least one transverse plate is hinged to one ends of the springs, and the other ends of the springs are hinged to the other ends of the springs. The middle part of at least one vertical plate is provided with a force-measuring batten hole along the length direction, and strain gauges are pasted on the front and back surfaces of two ends of the vertical plate. When the pilates fitness equipment is used, the spring is stretched, the vertical plate correspondingly generates bending moment of force, the bending moment on the vertical plate intensively acts on two end areas where the strain gauge is attached due to the fact that the middle of the vertical plate is provided with a force measuring plate strip hole, and the two ends of the vertical plate slightly deform, so that the strain gauge is compressed or stretched. By means of the processing circuit and the single-chip microcomputer, the magnitude of output force can be calculated, and data such as a force curve, the magnitude of force, the number of times of movement and calorie can be displayed on a screen.

Description

Technical Field

[0001] The utility model relates to the field of Pilates fitness equipment, in particular to a force value measuring device of Pilates fitness equipment. Background Art

[0002] In recent years, as Chinese people pay more and more attention to leisure activities, they can improve their physical fitness through sports and relieve daily stress. Among them, Pilates is one of the fitness exercises that people like, and more and more Pilates fitness equipment has also flooded into the market.

[0003] However, the existing Pilates fitness equipment does not have a force measuring mechanism, which means that the exerciser cannot maintain a certain constant exercise tension to achieve the goal of balanced intensity each time of exercise. Or it means that the patient in the recovery period cannot gradually and accurately increase the intensity of exercise as the physical condition improves during the recovery process. Utility Model Content

[0004] The utility model provides a force value measuring device for Pilates fitness equipment, which solves the problem that the existing Pilates fitness equipment lacks a force measuring mechanism.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A force value measuring device for Pilates fitness equipment comprises a force plate and a plurality of springs, wherein both ends of the force plate are fixedly connected with end plate frames, the force plate comprises at least one horizontal plate and one vertical plate, the horizontal plate and the vertical plate are alternately fixedly connected to form a step shape, at least one horizontal plate is hinged to one end of the plurality of springs, a force plate strip hole is opened in the middle of at least one vertical plate along the length direction, and strain gauges are attached to the front and back surfaces of both ends of the vertical plate.

[0007] Preferably, both ends of the force measuring plate are fixedly connected to the end plate frame by two bolts respectively.

[0008] Preferably, the end plate frame is a stepped plate.

[0009] Preferably, at least one end of the spring is a circular ring connecting end, and the circular ring connecting end is evenly hinged to the horizontal plate through a hinge column.

[0010] Preferably, an annular groove matching with the circular ring connecting end is provided in the middle of the circumferential side surface of the hinge column.

[0011] Preferably, there are three transverse plates and two vertical plates, a plurality of springs are hinged on the two lower transverse plates, and force measuring plate holes are provided on the vertical plates.

[0012] Preferably, six of the springs are hinged on each of the transverse plates.

[0013] Preferably, it further includes a processing circuit, which includes a resistance bridge and a differential amplifier. Two output terminals of the resistance bridge are electrically connected to two input terminals of the differential amplifier respectively.

[0014] Preferably, the resistance bridge includes two resistors and two strain gauges.

[0015] Preferably, it further includes a single-chip microcomputer. An output terminal of the differential amplifier is electrically connected to an AD interface of the single-chip microcomputer.

[0016] The beneficial effects of the present utility model: When the Pilates fitness equipment is used, the spring is stretched, and a bending moment of force is correspondingly generated on the vertical plate. And because a force-measuring plate strip hole is provided in the middle of the vertical plate, the bending moment on the vertical plate is concentrated on the two end regions where the strain gauges are attached, and slight deformations occur at both ends of the vertical plate, thereby causing the strain gauges to be compressed or stretched, and thus causing the resistance values of the strain gauges to change, resulting in a change in the voltage U AB at the two output terminals of the resistance bridge. This voltage U AB is amplified by the differential amplifier and then outputs U O . It is collected by the AD port of the single-chip microcomputer. The single-chip microcomputer analyzes this voltage signal, and then the magnitude of the force can be deduced, and data such as the force curve, the magnitude of the force, the number of movements, and calories are displayed on the screen. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a perspective view of the present utility model;

[0019] Figure 2 is a perspective view of the present utility model from another angle;

[0020] Figure 3 is a front view of the present utility model;

[0021] Figure 4 is a circuit diagram of the strain gauge in the present utility model.

[0022] The reference numerals in the drawings are: 1 - force-measuring plate, 2 - spring, 3 - end plate frame, 5 - strain gauge, 6 - hinge column, 7 - processing circuit, 11 - cross plate, 12 - vertical plate, 13 - force-measuring plate strip hole, 21 - circular ring connection end, 31 - bolt, 61 - annular groove, 71 - resistance bridge, 72 - differential amplifier. Detailed Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Referring to Figures 1-4 , a force value measuring device for a Pilates fitness equipment, comprising a force measuring plate 1 and a plurality of springs 2. Both ends of the force measuring plate 1 are fixedly connected with end plate frames 3. The force measuring plate 1 includes at least one horizontal plate 11 and one vertical plate 12. The horizontal plate 11 and the vertical plate 12 are alternately and fixedly connected to form a stepped shape. At least one horizontal plate 11 is hinged to one end of the plurality of springs 2. A force measuring plate strip hole 13 is provided in the middle of at least one vertical plate 12 along the length direction, and strain gauges 5 are attached to the front and back of both ends of the vertical plate 12.

[0025] As a preferred technical solution, both ends of the force measuring plate 1 are respectively fixedly connected to the end plate frame 3 through two bolts 31. The end plate frame 3 is a stepped plate.

[0026] As a preferred technical solution, at least one end of the spring 2 is a circular ring connection end 21. The circular ring connection end 21 is evenly hinged to the horizontal plate 11 through a hinge column 6. An annular groove 61 for cooperating with the circular ring connection end 21 is provided in the middle of the circumferential side of the hinge column 6.

[0027] As a preferred technical solution, there are three horizontal plates 11 and two vertical plates 12. A plurality of the springs 2 are hinged to both of the lower two horizontal plates 11, and force measuring plate strip holes 13 are provided in the vertical plates 12. Six of the springs 2 are hinged to each of the horizontal plates 11.

[0028] As a preferred technical solution, it further includes a processing circuit 7. The processing circuit includes a resistance bridge 71 and a differential amplifier 72. Two output ends of the resistance bridge 71 are respectively electrically connected to two input ends of the differential amplifier 72. The resistance bridge 71 includes two resistors and two strain gauges 5.

[0029] One of the connection methods is as follows: The resistance bridge 71 includes two parallel branches. Each branch includes a strain gauge 5 in series with a resistor. The strain gauges on the two branches are respectively the strain gauges 5 on the front and back of the same end face of the vertical plate 12.

[0030] As a preferred technical solution, it further includes a single chip microcomputer (not shown). The output end of the differential amplifier 72 is electrically connected to the AD interface of the single chip microcomputer.

[0031] The working principle of the present utility model:

[0032] When the Pilates fitness equipment is in use, the spring is stretched, and a bending moment of force is correspondingly generated on the vertical plate 12. Since a force measuring strip hole 13 is provided in the middle of the vertical plate 12, the bending moment on the vertical plate 12 is concentrated on the two end regions where the strain gauge 5 is attached, and slight deformations occur at both ends of the vertical plate 12, thereby causing the strain gauge 5 to be compressed or stretched, resulting in a change in the resistance value of the strain gauge 5, causing a change in the voltage UAB at the two output terminals of the resistance bridge 71. This voltage UAB is amplified by the differential amplifier 72 and then output as UO, which is collected by the AD port of the single-chip microcomputer. The single-chip microcomputer analyzes this voltage signal, and then the magnitude of the force can be deduced, and data such as the force curve, the magnitude of the force, the number of movements, and calories are displayed on the screen.

[0033] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A Pilates fitness equipment force value measuring device, characterized in that: It includes a force plate and a plurality of springs, both ends of the force plate are fixedly connected with end plate frames, the force plate includes at least one horizontal plate and one vertical plate, the horizontal plate and the vertical plate are alternately fixedly connected to form a step shape, at least one horizontal plate is hinged to one end of the plurality of springs, a force plate strip hole is opened in the middle of at least one vertical plate along the length direction, and strain gauges are attached to the front and back sides of both ends of the vertical plate.

2. The Pilates fitness equipment force value measuring device according to claim 1, characterized in that: The two ends of the force plate are fixedly connected to the end plate frame via two bolts respectively.

3. The Pilates fitness equipment force value measuring device according to claim 1, characterized in that: The end plate frame is a step-shaped plate.

4. The Pilates fitness equipment force value measuring device according to claim 1, characterized in that: At least one end of the spring is a circular ring connecting end, and the circular ring connecting end is evenly hinged on the horizontal plate through a hinge column.

5. The Pilates fitness equipment force value measuring device according to claim 4, characterized in that: An annular groove matching with the circular ring connecting end is provided in the middle of the circumferential side surface of the hinge column.

6. The Pilates fitness equipment force value measuring device according to claim 1, characterized in that: There are three transverse plates and two vertical plates. A plurality of springs are hinged on the two lower transverse plates, and force measuring plate holes are provided on the vertical plates.

7. The Pilates fitness equipment force value measuring device according to claim 6, characterized in that: Six of the springs are hinged on the transverse plate.

8. The Pilates fitness equipment force value measuring device according to any one of claims 1 to 7, characterized in that: The system also includes a processing circuit, which includes a resistance bridge and a differential amplifier. Two output ends of the resistance bridge are electrically connected to two input ends of the differential amplifier respectively.

9. The Pilates fitness equipment force value measuring device according to claim 8, characterized in that: The resistance bridge includes two resistors and two strain gauges.

10. The Pilates fitness equipment force value measuring device according to claim 9, characterized in that: It also includes a single-chip microcomputer, and the output end of the differential amplifier is electrically connected to the AD interface of the single-chip microcomputer.

Images