CN213075672U

CN213075672U - Wrist strap type electrode

Info

Publication number: CN213075672U
Application number: CN202020998526.4U
Authority: CN
Inventors: 夏宇
Original assignee: Suzhou Repusi Electronics Co ltd
Current assignee: Suzhou Repusi Electronics Co ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-04-30
Anticipated expiration: 2030-06-01

Abstract

The utility model discloses a wrist strap formula electrode, including wrist strap, electrically conductive cloth, magic subsides, metal snap-fastener and lead the line, the wrist strap includes openly and the back, and electrically conductive cloth sets up at the back of wrist strap, and the one end of leading the line passes through metal snap-fastener electric connection with electrically conductive cloth, and the magic subsides include tapetum and barb face, and tapetum and barb face one of them sets up in the front of wrist strap, and tapetum and barb face two of them set up at the back of wrist strap. The utility model discloses a conducting cloth of wrist strap formula electrode has the flexibility, can be abundant with wrist electric contact, guaranteed interfering signal shielding validity, reliability and stability, do not have like the uncomfortable sense that traditional metal disk pressed and caused at the wrist.

Description

Wrist strap type electrode

Technical Field

The utility model relates to a human surface electromyogram signal acquisition field, in particular to wrist strap formula electrode.

Background

Electromyography refers to the bioelectrical pattern of muscles recorded by an electromyograph. Electromyography records bioelectrical signals of muscles at rest or during contraction, and is commonly used in medicine to examine nerve, muscle excitation, conduction functions, etc., to determine the functional status of peripheral nerves, neurons, neuromuscular junctions, and muscles themselves. The electromyographic current is a weak current signal, and is easily interfered to cause inaccurate measurement when the electromyographic current is measured. In operation, shielding electrodes are often used to eliminate interference signals. The conventional shielding electrode includes a metal wafer 100, lead wires 200, and a band 300. One end of the lead wire 200 is electrically connected, for example, welded, to the metal wafer 100, and the other end is provided with a connector adapted to the myoelectricity detection device. A slot 400 is provided near the edge of the metal disc 100 and the strap 300 passes through the slot 400. When in use, the metal disc 100 is attached to the skin of the wrist and then tightly bound by the binding band 300, so that the metal disc 100 is attached to the skin. The myoelectric signal on the surface of the skin of the human body is transmitted to the myoelectric detection device through the metal wafer 100 and the lead wire. The prior art has the disadvantage that the metal disc is rigid and the wrist of the person is often awkward. The surface of the wrist of a human body is not flat, and the metal wafer cannot be in complete contact with the wrist, so that the effectiveness and the stability of interference signal shielding are influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one defect of the prior art, the utility model discloses an aspect provides a wrist strap type electrode, including wrist strap, electrically conductive cloth, magic subsides, metal snap-fastener and lead the line, the wrist strap includes the front and the back, and electrically conductive cloth sets up the back at the wrist strap, and the one end of leading the line passes through metal snap-fastener electric connection with electrically conductive cloth, and the magic subsides include fluff face and barb face, and one of them sets up the front at the wrist strap with barb face, and two of them of fluff face and barb face set up the back at the wrist strap.

The application method of the embodiment is to tightly wind the wrist strap on the wrist to enable the conductive cloth to wind on the wrist and contact with the skin, then the back and the front of the wrist strap are connected through the magic tape to tie the wrist strap on the wrist, and the myoelectric signals on the surface of the wrist are conducted along the conductive cloth, the metal snap fasteners and the conducting wires. The beneficial effects of the embodiment are as follows: (1) the conductive cloth is conductive cloth as the name implies, namely has the flexible characteristic of the cloth, so that the conductive cloth can be fully in electrical contact with the wrist regardless of the shape and the thickness of the wrist of a person, and the effectiveness, the reliability and the stability of interference signal shielding are ensured; (2) the conductive cloth is flexible, and discomfort caused by pressing the traditional metal wafer on the wrist is avoided.

In some embodiments, the wristband has a length of 40-50cm and the conductive cloth has a length of 20-25 cm. Generally speaking, the circumference of the ankle of an adult is more than twenty centimeters, the circumference of the wrist is small, the length of the conductive cloth is selected to be 20-25cm, the conductive cloth can be basically wound around the wrist for one circle or more, and the flexibility and the reliability of the wrist strap type electrode in use are improved.

In some embodiments, the conductive cloth includes a substrate and a conductive material formed on the substrate, the conductive material being gold, silver, or copper.

In some embodiments, the metal snap fastener comprises a male snap and a female snap, the male snap is riveted on the middle of the wrist strap, and the male snap is in electrical contact with the conductive cloth.

In some embodiments, the sub-buckle has a conductive cloth on one side and a barbed surface on the other side, and the front surface of the wristband has a nap surface at least at a position opposite to the conductive cloth.

In some embodiments, the conductive cloth extends from the tab to one end of the wristband, the barbed surface extends from the tab to the other end of the wristband, and the fluffy surface extends from the tab to the end of the wristband. The advantage of this kind is that electrically conductive cloth and magic subsides all have sufficient length.

In some embodiments, the pile face extends from one end of the wristband to the other end. The advantage of this is that the magic tape has enough connection length even though the thickness of the wrists of different people is very different.

In some embodiments, the sub-buckle includes a circular portion, a protruding portion disposed on one side of the circular portion, and a riveting portion disposed on the other side of the circular portion, the protruding portion is riveted to an end portion of the conductive cloth after passing through the wrist strap and the conductive cloth in sequence from a front surface of the wrist strap, and the protruding portion has a constricted neck portion.

In some embodiments, the female fastener includes a second circular portion, a recess is formed in the center of the second circular portion, elastic members are respectively disposed on two sides of the recess, and after the protrusion of the male fastener is pressed into the recess of the female fastener, the two elastic members clamp the neck of the protrusion, so that the male fastener and the female fastener are engaged together.

Drawings

Fig. 1 is a schematic structural view of a conventional wrist electrode.

Fig. 2 is a side view of a wrist strap electrode according to an embodiment of the present invention.

FIG. 3 is an enlarged view of the middle portion of the wrist strap electrode shown in FIG. 2.

Fig. 4 is a front view of the wristband of fig. 3 with a female buckle fitted therein.

Fig. 5 is a back view of a female buckle adapted to the wrist band of fig. 3.

Fig. 6 is a cross-sectional view of a lead wire of a wrist strap electrode according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, a wrist strap type electrode includes a wrist strap 1, a conductive cloth 2, a hook and loop fastener, a metal snap fastener 4 and a lead wire 5.

The wristband 1 is a cloth tape having a front face 6 and a back face 7. The length of the wristband 1 may be 40-50 cm. The conductive cloth 2 is arranged on the back 7 of the wrist strap 1, and the conductive cloth 2 is preferably sewn on the wrist strap 1. One end of the conductive cloth 2 is aligned or substantially aligned with one end of the wristband 1. The length of the conductive cloth 2 can be half of the length of the wrist strap 1, for example, the length of the conductive cloth 2 is 20-25cm, so that when the conductive cloth 2 is wound on a wrist of a human body, the conductive cloth 2 has the largest contact area with the skin of the human body, and the sensitivity, effectiveness, reliability and stability of the wrist strap type electrode pair for shielding an interference signal are improved. The conductive cloth 2 is made of fiber cloth as a base material, and a metal material with high conductivity, such as gold, silver or copper, is deposited or plated on the base material.

Referring to fig. 2-3, the magic tape includes a fluff surface 8 and a hook surface 9, wherein the hook surface 9 is disposed on the back 7 of the wrist band 1, and the fluff surface 8 is disposed on the front 6 of the wrist band 1. When the wrist strap is used, after the wrist strap 1 is wound on the wrist of a human body, the conductive cloth 2 is opposite to the wrist, the hook of the hook surface 9 of the magic tape hooks the fluff of the fluff surface 8, and the wrist strap 1 is tightly bound on the wrist, so that the conductive cloth 2 is tightly attached to the skin of the human body. In some embodiments, it is also possible that the barbed surface 9 is provided on the back surface 7 of the wristband 1 and the pile surface 8 is provided on the front surface 6 of the wristband 1.

Referring to fig. 3-4, the metal snap fastener 4 includes a male snap 10 and a female snap 11. The male buckle 10 and the female buckle 11 are all metal, and are electrically connected after being buckled. The sub-buckle 10 is fixed in the middle of the wrist strap 1 and is arranged at one end of the conductive cloth 2, and the sub-buckle 10 is in electrical contact with the conductive cloth 2. The lead wire 5 and the conductive cloth 2 are electrically connected through the metal snap fastener 4, so that the lead wire and the conductive cloth can be detached from each other, can be in good electrical contact, and cannot fall off. One side of the sub-buckle 10 is provided with a conductive cloth 2, the other side is provided with a hook surface 9, and the front surface of the wrist strap 1 is provided with a fluff surface 8 at least at the position opposite to the conductive cloth 2. The conductive cloth 2 extends from the sub-buckle 10 to one end of the wrist strap 1, the barbed surface 9 extends from the sub-buckle 10 to the other end of the wrist strap 1, and the fluff surface 8 extends from the sub-buckle 10 to the end of the wrist strap 1. Further, the nap surface 8 extends from one end of the wrist band 1 to the other end, that is, the nap surface 8 covers the entire front surface 6 of the wrist band 1, which has an advantage that the velcro tape has a sufficient length to tighten the wrist band 1 even if the thickness of the wrist of different people is very different.

The metal snap fasteners 4 are widely used in the clothing industry, and therefore the metal snap fasteners 4 of the present disclosure have a wide source. The sub-buckle 10 includes a first circular portion 12, a protrusion portion 13 provided on one side of the first circular portion 12, and a rivet portion 14 provided on the other side of the first circular portion 12. The boss 13 has a constricted neck portion 15. The riveting part 14 penetrates the wrist strap 1 and the conductive cloth 2 in order from the front surface 6 of the wrist strap 1, and then is riveted at the end part of the conductive cloth 2, the riveting part 14 is contacted with the conductive cloth 2, and the bulge part 13 and the first circular part 12 are positioned at the side of the front surface 6 of the wrist strap 1. The female buckle 11 comprises a second circular part 16, a concave hole 17 is formed in the center of the second circular part 16, and elastic parts 18 are arranged on two sides of the concave hole 17 respectively. After the convex part 13 of the male snap 10 is pressed into the concave hole 17 of the female snap 11, the two elastic parts 18 clamp the neck part 15 of the convex part 13, so that the male snap 10 is embedded with the female snap 11. Referring to fig. 5, the elastic member 18 may be an S-shaped spring.

Referring to fig. 6, the lead wire 5 includes a wire 19, an insulating layer 20 covering the wire 19, a connector 21 disposed at one end of the wire 19 and electrically connected to the other end of the wire 19, and a female buckle 11 electrically connected to the other end of the wire 19. The female snap 11 is embedded in an insulating portion 22, and the insulating portion 22 and the insulating layer 20 are integrated and made of insulating resin.

The application method of the wrist strap type electrode is that the female button 11 at one end of the lead wire 5 is embedded with the sub button 10 on the wrist strap 1, the wrist strap 1 is tied on the wrist of the human body, and the conductive cloth 2 is tightly contacted with the wrist. The other end of the lead wire 5 is connected to the ground of the bioelectrical detection device by the connector 21. The interference electric signal is transmitted to the bioelectricity detection equipment through the conductive cloth 2, the metal snap fastener 4 and the lead 19 in sequence. The utility model discloses a wrist strap formula electrode has excellent sensitivity, reliability and stability.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The wrist strap type electrode is characterized by comprising a wrist strap, conductive cloth, a magic tape, a metal snap fastener and a lead wire, wherein the wrist strap comprises a front surface and a back surface, the conductive cloth is arranged on the back surface of the wrist strap, one end of the lead wire is electrically connected with the conductive cloth through the metal snap fastener, the magic tape comprises a fluff surface and an barbed surface, one of the fluff surface and the barbed surface is arranged on the front surface of the wrist strap, and the two of the fluff surface and the barbed surface are arranged on the back surface of the wrist strap.

2. The wrist-worn electrode according to claim 1, wherein the wrist band has a length of 40-50cm, and the conductive cloth has a length of 20-25 cm.

3. The wrist strap electrode according to claim 1, wherein the conductive cloth comprises a base material and a conductive material formed on the base material, the conductive material being gold, silver or copper.

4. The wrist strap electrode of claim 1, wherein said metal snap fastener comprises a male snap fastener and a female snap fastener, said male snap fastener is riveted to a middle portion of said wrist strap, said male snap fastener is in electrical contact with said conductive cloth.

5. The wrist strap electrode according to claim 4, wherein said conductive cloth is provided on one side of said sub-buckle, said barbed surface is provided on the other side, and said nap surface is provided on at least a position opposite to said conductive cloth on the front surface of said wrist strap.

6. The wrist-worn electrode according to claim 5, wherein the conductive cloth extends from the sub-clasp to one end of the wrist strap, the barbed surface extends from the sub-clasp to the other end of the wrist strap, and the napped surface extends from the sub-clasp to the end of the wrist strap.

7. The wrist-worn electrode according to claim 5, wherein the pile face extends from one end of the wrist strap to the other end.

8. The wrist strap electrode according to claim 4, wherein the sub-buckle includes a circular portion, a protruding portion provided on one side of the circular portion, and a riveting portion provided on the other side of the circular portion, the protruding portion having a constricted neck portion, passing through the wrist strap and the conductive cloth in this order from the front surface of the wrist strap and then being riveted to the end portion of the conductive cloth.

9. The wrist strap electrode according to claim 8, wherein the female buckle includes a second circular portion, a recess is formed in the center of the second circular portion, and elastic members are respectively disposed on both sides of the recess, and when the protrusion of the male buckle is pressed into the recess of the female buckle, the elastic members clamp the neck of the protrusion, so that the male buckle and the female buckle are engaged with each other.