JPS592957B2 - pedometer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a pedometer that is worn on the human body to measure the amount of exercise such as walking, marathons, etc.

(Problems with the prior art) In general, the acceleration waveform of the human body is
Figure 3, and when doing light exercise, it looks like Figure 1, and in both cases the upper end of the waveform is distorted.In the conventional pedometer, the base is supported pivotably inside the main body case 1, as shown in Figure 3. At the same time, this movement was detected by a pendulum 5 whose tip end was elastically supported by a spring 6, and pendulum stoppers 11 provided above and below the tip end of the pendulum 5.

Therefore, when the pendulum 5 swings sharply due to intense movement as shown in FIG. is cut to create a distortion-free waveform that allows the pedometer to count accurately.

However, when the swing of the pendulum 5 is small due to light movement as shown in Figure 1, the pendulum 5 does not hit the pendulum stopper 11, so the operating waveform of the pendulum 5 is the same as the acceleration waveform of the human body, as shown in Figure 2. This is a distorted waveform, and the pedometer has the problem of not counting each step or counting twice.

(Purpose) The present invention was made in view of the above problems, and its purpose is to provide a pedometer that improves counting accuracy by adding viscous resistance to the pendulum to eliminate distortion of the pendulum's operating waveform. Our goal is to provide the following.

(Example) Examples of the present invention will be described below based on FIGS. 4 to 7.

1 is a main body case, 2 is a power switch, 3 is a reset switch, and 4 is a counter device.

Reference numeral 5 denotes a pendulum that reciprocates in synchronization with walking, and its base is pivotally supported within the main body case 1.

A spring 6 elastically supports the pendulum 5, and has one end fixed to the pendulum 5 and the other end fixed to the main body case 1.

A viscous resistance body 7 adds viscous resistance to the pendulum 5, and is made of a viscous material such as rubber and encloses the spring 6.

The counter device 4 includes a magnet 8 that is fixed to the tip of a pendulum 5 and reciprocates with the pendulum 5, and a reed that is disposed opposite the magnet 8 and detects changes in the magnetic field caused by the magnet 8 that moves when walking. It consists of a magnetic sensor 9 such as a switch or a Hall element, and a counter 10 that receives a signal from the magnetic sensor 9 and counts and displays the number of steps.

By adding viscous resistance to the pendulum 5 of the pedometer constructed as described above, the pendulum 5 no longer moves abruptly and the waveform of the movement is not distorted, resulting in a curve as shown in FIG.

In addition to the above-mentioned embodiments, the viscous resistor may be a dashpot, a pendulum housing chamber in the main body case 1 in which liquid is injected and the viscosity of the liquid is utilized, or a pendulum 5 with fins attached to the air. It may also be one that utilizes the viscosity of

Also, as shown in Fig. 7, attach the string 12 to the main body case 1, and
A similar effect can be obtained even if the pedometer is attached to the human body via 2.

(Effects) As described above, the present invention eliminates distortion of the operating waveform of the pendulum by adding viscous resistance to the pendulum, thereby eliminating errors in counting steps and improving counting accuracy.

[Brief explanation of drawings]

Fig. 1 shows the motion acceleration waveform of the human body, Fig. 2 shows the operating waveform of the pendulum of the conventional example, Fig. 3 is a front view of the case of the conventional example in cross section, and Figs. 4 to 7 show the embodiment of the present invention. 4 is a perspective view, FIG. 5 is a cross-sectional front view of the case, FIG. 6 is an operating waveform of the pendulum, and FIG. 7 is a diagram of a different embodiment. 1... Body case, 4... Counter device, 5... Pendulum, 6... Spring, r...
...Viscous resistor.

Claims (1)

[Claims] 1 The base is rotatably supported within the main body case, and
A pendulum whose tip is elastically supported by a spring and moves back and forth in synchronization with walking, a viscous resistance body that adds viscous resistance in the direction of the pendulum's back and forth movement, and a device that counts and displays the number of steps taken by detecting the back and forth movement of the pendulum. A pedometer comprising a counter device.