JPH0522162Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a pulse meter sensor for measuring pulse rate, and particularly relates to improvements in a heart rate sensor that detects heartbeats based on changes in cardiac potential.

(b) Conventional technology Conventionally, as a heart rate sensor,
The one shown in No. 92735 is known. In other words,
The heart rate sensor shown in Japanese Patent Application Laid-open No. 60-92735 is
It consists of two disc-shaped electrodes placed inside a belt that wraps around the chest.

(c) Problems to be solved by the invention For example, when exercising using exercise equipment such as a training bicycle, a heart rate monitor is used to measure or manage the health condition during exercise.

As one form of heart rate monitor, for example,
As shown in No. 28404, there are devices in which an ear-type pulse sensor that captures pulse signals from the ear and a pulse meter that displays the pulse rate are connected by a cord. However, with this method of capturing pulse signals from the ear, most sensors are optical, and optical sensors have the problem of sunlight entering the sensor and interfering with pulse counting when used outdoors.

As a solution to this problem, there is a so-called heart rate monitor that detects changes in electrical potential from the heart, that is, electrocardiographic pulses, and counts the electrocardiographic pulses. In a heart rate monitor, electrodes that detect changes in the heart's potential need to come into contact with the chest or near the chest of the human body. However, in the heart rate sensor disclosed in Japanese Patent Application Laid-Open No. 60-92735, when the electrode is placed in the concave part of the chest, the electrode lifts up from the user's body and does not come into contact with the user. However, there were problems in that cardiac potential pulses could not be detected, or that the noise was greater than when the electrodes were in contact with the body.

This idea was made in view of the above circumstances, and it ensures that the electrodes for collecting the electrocardiogram signal of the user come into contact with the user's body, thereby detecting changes in the electrocardiogram, that is, electrocardiogram pulses. An object of the present invention is to provide a heart rate sensor capable of detecting the heart rate accurately and with less noise.

(d) Means for solving the problem This invention is a heart rate sensor comprising a loop that is wrapped around the user's chest and an electrode that elastically protrudes inside the loop for collecting cardiac potential signals. be.

The detailed structure consists of multiple electrodes made of conductive rubber that collect cardiac potential signals when they come into contact with the human chest or its vicinity, and a holding band that holds the multiple electrodes at predetermined intervals. , a connecting band having a band shape, both ends of which can be connected to both ends of the holding band to form a loop, and which can be wrapped around the user's chest; and the plurality of electrodes are connected to the inside of the loop. The heart rate sensor is arranged and held on the holding band as shown in FIG.

(E) Effect Even if there is a recess in the user's chest, if the electrode protruding inwardly from the loop in an arcuate manner is placed in contact with the recess, the electrode will elastically abut against the recess in the chest.

(f) Examples This invention will be explained in detail based on the examples shown in FIGS. 1 to 4. However, this invention is not limited thereby.

As shown in FIG. 1, the heart rate sensor 1 includes electrodes 2, 3, and 4, a holding belt 5, and a connecting belt 6.
is provided.

The electrodes 2, 3, and 4 are made of conductive rubber, and are used to contact the human chest or its vicinity to collect cardiac potential signals of the human body. electrode 2,
3 and 4 are arranged and held on the holding belt 5 so as to be located inside a loop (not shown) formed by the holding belt 5 and the connecting belt 6. 7
are electrode hooks for holding the electrodes 2, 3, and 4 on the holding belt 5. The electrodes 2 and 4 further include:
It is attached and fixed to the holding belt 5 with adhesive.

As shown in FIGS. 1 to 3, the electrode 3 includes an arcuate contact portion 8 that contacts the human body to be measured, and a support portion 9 that supports the arcuate protrusion of the contact portion 8. . Then, as shown in FIGS. 1 and 3, when a force in the direction of arrow B is applied to the contact part 8, the longitudinal end of the contact part 8 moves in the direction of arrow C, causing the electrode 3 to move in the direction of arrow C. The projecting distance from the holding belt 5 is reduced.

The connection between the holding belt 5 and the connecting belt 6 is made through a through hole 11 provided in the belt connecting part 10 of the holding belt 5.
This is done by latching the bent end 12 of the connecting belt 6.

Below, how to use the heart rate sensor 1 will be explained. First, the user connects the holding belt 5 and the connecting belt 6 at only one end, wraps the holding belt 5 and the connecting belt 6 in this state around the chest, and hooks the other ends to form a loop. Next, the user positions the electrode 3 in the chest cavity (not shown). Here heart rate sensor 1
In this case, the electrode 3 is in contact with the concave part of the chest, and the electrodes 2 and 4 are in contact with the convex part of the chest. Note that when the concavity of the chest is small, the electrode 3 receives a force in the direction of arrow B from the concavity at the abutment part 8, and the longitudinal end moves in the direction of arrow C, causing the electrode 3 to move in the direction of arrow C. Reduce the protrusion distance. Therefore, even if the person has a small chest cavity, the electrode 3
I don't feel like I'm under a lot of pressure. Further, the user hooks the transmitter 14 to the terminal hook 13 provided on the outer surface of the holding belt 5.

Note that the terminal hook 13 is electrically connected to the electrode hook 7 and can transmit electrical signals from the electrodes 2, 3, and 4 to the transmitter 14. Also, transmitting section 1
Reference numeral 4 sends the electrocardiogram signals received by the electrodes 2, 3, and 4, so-called electrocardiogram pulses, to the counting side.

Here, the user wears the heart rate sensor 1 as shown in FIG. 4, and becomes ready to count heartbeats.

The heart rate sensor 1 is configured as described above. Therefore, even if there is a recess in the user's chest, the electrode 3 will not come into contact with the recess and be lifted up, so problems such as inability to collect cardiac potential signals or excessive noise will not occur.
In addition, since the electrode 3 is constructed so that its protrusion distance can be reduced by applying a pressing force, the electrode 3 can reliably come into contact with the user's chest even if the depth of the recess in the user's chest varies. It is not affected by the degree of the dent. Furthermore, since the heart rate sensor 1 is configured using three electrodes 2, 3, and 4, it is possible to pick up cardiac potential pulses from a wide range, and it is possible to reduce errors associated with detected values.

(g) Effects of the device This device uses conductive rubber to detect the electrode that collects the cardiac potential signal, and also protrudes toward the recess so that the electrode makes sure to contact the recess in the user's chest. Due to its arcuate shape, it is a heart rate sensor that can reliably collect electrocardiogram signals and perform reliable measurements, as well as with less noise.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is a front view of a holding belt holding the electrodes of this embodiment, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4. FIG. 2 is a perspective view showing the state in which this embodiment is used. 1... Heart rate monitor sensor, 2, 3, 4... Electrode,
5... Holding belt, 6... Connection belt, 7... Electrode hook, 8... Contact part, 9... Support part.

Claims (1)

[Claims for Utility Model Registration] A plurality of electrodes made of conductive rubber that collect cardiac potential signals when they come into contact with the chest of a human body or its vicinity, and a holder that holds the plurality of electrodes at predetermined intervals. a band, and a connecting band which is belt-shaped and whose ends can be connected to both ends of the holding band to form a loop, and which can be wrapped around the user's chest, and the plurality of electrodes are connected to the loop. A heart rate sensor which is disposed and held by a holding band so as to be located on the inside, and one of the electrodes has a center portion or a portion near the center of the electrode that is separated from the holding band and protrudes in an arcuate direction towards the inside of the loop.