JPH0544730Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a pedometer that is attached to a part of the body and counts the number of steps by sensing vibrations when walking. In this digital electronic pedometer, for example, the number of steps is counted by a weight descending and contacting a contact point that converts it into a digital signal. In this case, the number of steps is displayed by sampling/holding an electrical signal corresponding to a step including noise, converting it into a one-pulse signal, and outputting it.

(Prior art) Conventional electronic walking that counts the number of steps by electrically measuring the reciprocating motion of the pendulum when walking, using a rotatable pendulum with a weight at its tip and biased by a spring. In order to regulate the range of rotation of the pendulum's reciprocating motion, a stopper must be specially installed in the meter, and by bringing the weight of the pendulum into contact with a contact point that converts it into a digital signal, an electric circuit is opened and closed, and the number of steps is counted. In the counting type, the contact points had to be made robust to serve as a stopper, which resulted in high costs and a large number of parts, which required time to assemble.

(Problems to be solved by the invention) In view of the above-mentioned drawbacks, the present invention eliminates the need to separately provide a stopper for regulating the rotation range of the reciprocating motion of the pendulum, and also makes the contact point robust so that the stopper It is an object of the present invention to provide a step counting mechanism in an electronic pedometer that is economical and easy to assemble and does not require a replacement.

(Means for Solving the Problems) In order to achieve this purpose, the present invention uses a spring to bias a rotatable pendulum with a weight at the tip, and electrically controls the reciprocating motion of the pendulum when walking. In electronic pedometers that count the number of steps by measuring the number of steps, the weight of a reciprocating pendulum is formed on one side of the outer circumferential surface of the battery so that the weight of a reciprocating pendulum is in contact with the outer peripheral surface of the battery. It is characterized by counting the number of steps by opening and closing an electric circuit through contact between a battery and a weight during exercise, and the battery serves as a stopper to restrict the range of rotation of the pendulum.

(Example) An example of the present invention will be described below based on the drawings.

FIG. 1 is a plan view showing the internal structure of the present invention.

A is a walking sensor that detects walking and converts it into an electrical signal.A pendulum 1 has its end rotatably supported in a box, and a weight 2 is attached to the tip of the pendulum 1, which is normally biased upward. The spring 3 is installed so that the spring 3 when walking is
The weight 2 descends against the force of , and contacts the contact 4 that converts it into a digital signal.

The spring 3 is connected to the electric circuit of the circuit board 5, and the electricity supplied from the battery 6 is connected to the circuit board 5.
The energy is transmitted to the spring 3, and further transmitted to the metal pendulum 1 and the weight 2.

A battery 6 is sandwiched between an upper case 7 and a lower case 8 at the bottom of the weight 2, and a contact 4 is provided between the battery 6 and the weight 2 in contact with the outer peripheral surface 9 of the battery 6. It is being When walking, this contact point 4 causes the weight 2 and the battery 6 to come into contact with each other due to the up and down reciprocating movement of the pendulum 1.
This is to prevent the battery 6 from being damaged.

The battery 6 has a negative pole at the center and a positive pole at the outer circumference, a battery receiving spring 20 and a battery side pressure spring 21, both of which are connected to the circuit board 5.

A protrusion 10 is provided on the upper part of the weight 2, which is integrally molded with the upper case 7. When walking, the weight 2 reciprocates while contacting the protrusion 10 and the contact point 4. Reference numeral 11 denotes a crystal oscillator, 12 denotes a digital display of the number of steps, and 13 denotes a digital display of the number of steps.
and a reset button for resetting the number of steps displayed on the digital display.

B is a hold circuit that extracts the electrical signal containing noise from the walking sensor A, converts it into a one-pulse signal, and outputs it. and a rectangular wave output circuit 31 including a transistor Tr. The waveform shown in Fig. 5a is a plurality of electrical signals including noise output from contact 4, and the waveform shown in Fig. 5b is an extraction period set with a time constant determined by the capacitor c of the integrating circuit and the variable resistor VR. In the output waveform of the integrating circuit, V _TH is the threshold voltage level of transistor _Tr . The waveform shown in FIG. 5c is the waveform of the rectangular wave output circuit 31 of the transistor T _r , and the electrical signal containing noise input during the extraction period corresponding to one step is converted into a one-pulse signal and output.

C is a counter that receives an electrical signal from the walking sensor A via a hold circuit B and counts and displays the number of steps.

When the electronic walking device of the present invention configured as described above is attached to the top of the foot or near the ankle, the pendulum 1 is biased against the spring 3 by the weight 2 every time the foot moves up and down. It reciprocates between the protrusion 10 and the contact 4. Each time the normally attached foot takes a step, the pendulum swings 1
oscillates multiple times and the weight 2 contacts the contact point 4, but the number of steps taken by the wearer is counted through a hold circuit B which extracts the noise-containing electrical signal from the walking sensor A, converts it into a one-pulse signal, and outputs it. Since the input signal of the counter that counts and displays the number of steps is a noise-free rectangular wave, miscounts are removed, and the number of steps corresponding to one step is displayed on the display section 12.

(Effects of the invention) As described above, the pedometer counting mechanism in the electronic pedometer of the invention does not have a stopper for regulating the rotation range of the reciprocating motion of the pendulum like in the past, A pendulum weight is placed against the surface to act as a stopper. Therefore, since there is no need to separately provide a stopper, the number of parts is reduced, and the entire device can be made smaller. Furthermore, since the number of assemblies is reduced, costs are lower and assembly itself is easier.

In this example, a contact was provided between the weight and the battery in contact with the outer circumferential surface of the battery, but this is to prevent the battery from being damaged. There is no change in the above effect.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the internal structure of the present invention;
The figure is a plan view of the inside of the lower case, Figure 3 is an external view, and Figure 4 is a plan view of the inside of the lower case.
The diagram shows the configuration block of the present invention, and FIG. 5 is a diagram of signal waveforms before and after passing through the hold circuit. 1... Pendulum, 2... Weight, 3... Spring, 6...
Battery, A...Walking sensor, B...Hold circuit,
C...Counter.

Claims (1)

[Scope of utility model registration request] In an electronic pedometer that counts steps by electrically measuring the reciprocating motion of the pendulum when walking, using a rotatable pendulum with a conductive weight at the tip of the pendulum, which is biased by a spring. The weight of the pendulum is formed so that one side of its reciprocating movement is stopped by a protrusion of the case, and the other side of the reciprocating movement is stopped by the outer periphery of the battery fixed to the case, and the weight of the pendulum is stopped by the outer periphery of the battery fixed to the case. A step counting mechanism in an electronic pedometer, characterized in that an open/close switch is formed between the weight and the electric signal generated is counted as the number of steps.