JP2015177846A - clip electrode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform assembly safely and easily in a short time without using a jig.SOLUTION: A clip electrode comprises: first and second plate pieces 10, 20 having bearing parts 11, 21; a shaft rod 40 inserted into shaft holes 12, 22 of the bearing parts 11, 21 provided in the first plate piece 10 and the second plate piece 20; a spring 30 having a first end 31 in contact with the first plate piece and a second end 32 in contact with the second plate piece; a spring placing part 16 provided in the first plate piece for placing the spring at a position that matches the shaft holes; a positioning part 17 for positioning the first end of the spring 30 placed on the spring placing part 16; a movement suppressing part for suppressing the movement of the spring placed on the spring placing part 16; and an electrode 50 provided in an organism holding part.

Description

  The present invention relates to a clip electrode that can be applied to an electrode such as an electrocardiograph.

  Patent Document 1 discloses an electrocardiograph clip electrode having a configuration in which two clamping plates are coupled by a pivot shaft, a spring is provided on the pivot shaft, and a living body is clamped by the two clamping plates. Has been. The process of assembling the electrocardiograph clip electrode will be described with reference to FIG. The shaft holes 103, 103 formed in the bearing portions 102, 102 of the holding plate 101 are aligned with the shaft core 105 of the coil spring 104. Further, one end 104a of the coil spring 104 is brought into contact with the sandwiching plate 101, and the other end 104b of the coil spring 104 is pressed in the direction of the arrow X, so that the other sandwiching plate (not shown) paired with the sandwiching plate 101 is positioned upward in the figure. Put on.

  The shaft holes 103 and 103 of the sandwiching plate 101 are matched with the shaft holes of the other sandwiching plate (not shown) and the shaft 105 of the coil spring 104. In this state, the shaft is inserted into the shaft hole from the outside of the bearing portion to complete the assembly.

Japanese Utility Model Publication No. 1-17290

  As described above, the conventional clip electrode has a lot of labor for assembling work. This assembly work is almost difficult to perform without using a jig. For example, even if the work is performed without using a jig, it takes a lot of time and there is a possibility that the end of the spring may damage the product.

  The present invention has been made to solve the problems of the clip electrode as described above. An object of the present invention is to provide a clip electrode that can be easily and safely assembled in a short time without using a jig.

  The clip electrode according to the present invention includes first and second plate pieces including a bearing portion, a shaft rod penetrating through a shaft hole of a bearing portion provided in the first plate piece and the second plate piece, and A spring having a first end abutting against the first plate piece and a second end abutting against the second plate piece; and a spring provided on the first plate piece, A spring placement portion placed at a position coinciding with the shaft hole; a first positioning portion for positioning a first end portion of the spring placed on the spring placement portion; and the spring placement portion The movement suppression part which suppresses the movement of the said spring mounted in the body, and the electrode provided in the biological body clamping part are comprised.

  In the clip electrode of the present invention, the movement suppressing portion is a second positioning portion that positions the second end portion of the spring.

  In the clip electrode of the present invention, the movement suppressing portion is a pressing member that presses the spring from the side facing the spring placement portion.

  In the clip electrode according to the present invention, the positioning portion is a recess, and a rib is provided in the vicinity of the recess so as to prevent contact between the spring main body and the finger.

  According to the clip electrode of the present invention, when the first plate piece and the second plate piece are assembled, the movement of the spring is suppressed when the spring is placed on the spring placement portion so as to match the shaft hole. Since it is restrained by the part, it is possible to easily and safely assemble without using a special jig.

The assembly perspective view showing the composition of the embodiment of the clip electrode of the present invention. The perspective view which shows the 1st board piece of embodiment of the clip electrode of this invention. The perspective view which shows the 2nd board piece of embodiment of the clip electrode of this invention. The perspective view which shows the structure of the assembly process of embodiment of the clip electrode of this invention. The principal part expansion perspective view which shows the structure of embodiment of the clip electrode of this invention. The principal part expansion perspective view which shows the structure of embodiment of the clip electrode of this invention. The perspective view of embodiment of the clip electrode of this invention. The principal part perspective view which shows the principal part structure of 2nd Embodiment of the clip electrode of this invention. The perspective view which shows the principal part structure of the conventional clip electrode.

  Embodiments of a clip electrode of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted. As shown in FIG. 1, the clip electrode of the embodiment includes a first plate piece 10, a second plate piece 20, a coil spring 30, a shaft rod 40, and an electrode 50.

  The 1st board piece 10 and the 2nd board piece 20 are comprised by the board | plate of insulating materials, such as elongate resin. The first plate piece 10 includes bearing portions 11 and 11, and a shaft hole 12 is formed in the center portion of the bearing portion 11. An arcuate sliding guide portion 13 is provided on the outer base portion of the bearing portion 11.

  The first plate piece 10 on the side where the distance from the bearing portion 11 to the end portion is long constitutes a living body holding portion 14 that holds a living body. The first plate piece 10 on the side where the distance from the bearing portion 11 to the end portion is short constitutes a knob portion 15 that is operated by a finger or the like. A stopper 19, which is a protrusion that prevents the electrode 50 from falling off, is provided at the end of the living body sandwiching portion 14, and the electrode 50 is provided from the stopper 19 toward the bearing portion 11.

  The coil spring 30 has a first end 31 and a second end 32 protruding from the main body (body). Spring mounting portions 16 and 16 on which the main body portion of the coil spring 30 is mounted are formed on the first plate piece 10 between the bearing portion 11 and the bearing portion 11. The spring placement portion 16 places the shaft core 33 of the coil spring 30 at a position that coincides with the shaft hole 12. The spring mounting portion 16 can have a part of a polygonal outer shape that contacts the main body of the coil spring 30, an arc shape, or a U shape.

  As shown in FIG. 2, the first end portion 31 of the coil spring 30 placed on the spring placement portion 16 is positioned on the first plate piece 10 closer to the knob portion 15 than the spring placement portion 16. A (first) positioning portion 17 is formed. The positioning part 17 can be a rectangular hole that is a recess. A rib 18 that prevents the finger from coming into contact with the main body of the coil spring 30 is provided on the side edge near the center of the positioning portion 17 so as to prevent the finger from entering the shaft portion. The rib 18 is coupled to one spring mounting portion 16 and is formed taller as it approaches the spring mounting portion 16.

  As shown in FIG. 3, bearing portions 21 and 21 are provided at positions of the second plate piece 20 facing the bearing portions 11 and 11 of the first plate piece 10. A shaft hole 22 is formed in the center of the bearing portion 21. An arcuate sliding guide portion 23 is provided on the inner base portion of the bearing portion 21.

  The second plate piece 20 on the side where the distance from the bearing portion 21 to the end portion is long constitutes a living body holding portion 24 that holds the living body. The second plate piece 20 on the side where the distance from the bearing portion 21 to the end portion is short constitutes a knob portion 25 that is operated by a finger or the like.

  Corresponding to the positioning portion 17 of the first plate piece 10, a (second) positioning portion 27 for positioning the second end portion 32 of the coil spring 30 is formed on the second plate piece 20. Yes. The positioning part 27 can be a rectangular hole that is a recess. A rib 28 is provided on the side edge near the center of the positioning portion 27 so as to prevent the finger from coming into contact with the main body portion of the coil spring 30 so as to prevent entry into the shaft portion. The ribs 28 may be formed so as to be taller as they approach the bearing portion 21 along one side of the positioning portion 27 and bend at a right angle from a predetermined position so as to extend to the far bearing portion 21 side by a predetermined dimension. it can.

  The process of assembling the clip electrode having the above configuration will be described. As shown in FIG. 4, the coil spring 30 is placed on the spring placement portion 16. At this time, the first end portion 31 of the coil spring 30 is placed in the positioning portion 17 and positioned. With respect to the coil spring 30 in this state, the second plate piece 20 is held so that the positioning portion 27 faces downward as shown in FIG. 3, and the second end portion 32 of the coil spring 30 is accommodated in the positioning portion 27.

  As described above, the second plate piece 20 in contact with the second end portion 32 of the coil spring 30 is pressed in the direction of the first plate piece 10 so that the bearing portion 21 is accommodated in the sliding guide portion 13. The part 11 is fitted in the sliding guide part 23. At this time, the positioning portion 27 presses the second end portion 32 of the coil spring 30 placed on the spring placement portion 16 before the shaft rod 40 passes through, so that the coil spring 30 enters an appropriate biased state. When guided to the position (when the first plate piece 10 and the second plate piece 20 are coupled), it functions as a movement suppressing unit that suppresses the movement of the coil spring 30. The position where the proper urging state is achieved can be the position of the coil spring 30 when the distal end of the living body sandwiching portion 14 and the distal end of the living body sandwiching portion 24 come into contact with each other.

  At this time, as shown in FIG. 5, the first end portion 31 of the coil spring 30 has its tip portion 31 a slightly lifted, but is in a state where the movement is prevented by contacting the wall portion of the positioning portion 17 as a whole. Thus, assembly work can be performed without using a special jig. In addition, as shown in FIG. 6, the second end portion 32 of the coil spring 30 has a state in which the tip end portion 32a slightly floats, but is in contact with the wall portion of the positioning portion 27 as a whole and is prevented from moving. Thus, assembly work can be performed without using a special jig.

  As shown in FIG. 7, when the bearing portion 21 is accommodated in the sliding guide portion 13 and the bearing portion 11 is accommodated in the sliding guide portion 23, the shaft 40 is moved from one bearing portion 21 to the other bearing portion 21. Let go. When passing through, the coil spring 30 is mounted on the spring mounting portion 16, and the shaft core 33 of the coil spring 30 coincides with the shaft hole 12 (22). For this reason, the shaft rod 40 can be passed through easily and accurately. The electrode 50 can be fitted to the first plate piece 10 before or after this operation. The shaft rod 40 is provided with a groove for fitting the E-ring, and the shaft rod 40 passed through the bearing portions 21 and 21 is fixed by the E-ring.

  FIG. 8 is a perspective view of a main part of the second plate piece 20 used for the clip electrode of the second embodiment. The second plate piece 20 has a pressing member 80. The pressing member 80 has a height for pressing the main body portion of the coil spring 30 from the side facing the spring mounting portion 16 so as to be accommodated in the spring mounting portion 16. The pressing member 80 is a rod-like member, but may be a rib shape as with the spring mounting portion 16. The size is not particularly limited as long as it does not hinder the function of the clip.

  The pressing member 80 functions as a movement suppressing unit that suppresses the movement of the coil spring 30. Therefore, if the second plate piece 20 has the pressing member 80, the positioning portion 27 for positioning the second end portion 32 may be omitted. In each of the above embodiments, a coil spring is used as a spring. However, a spring having a similar action may be used, and a leaf spring or the like may be used.

DESCRIPTION OF SYMBOLS 10 1st board piece 11 and 21 Bearing part 16 Spring mounting part 17 and 27 Positioning part 18 and 28 Rib 20 2nd board piece 30 Coil spring 40 Shaft bar 50 Electrode 80 Pressing member

Claims (4)

First and second plate pieces each having a bearing portion;
A shaft bar penetrating through a shaft hole of a bearing portion provided in the first plate piece and the second plate piece;
A spring having a first end abutting against the first plate piece and a second end abutting against the second plate piece;
A spring mounting portion provided on the first plate piece and mounting the spring at a position coinciding with the shaft hole;
A first positioning part for positioning the first end of the spring placed on the spring placing part;
A movement restraining part for restraining the movement of the spring placed on the spring placing part;
A clip electrode comprising: an electrode provided in a living body clamping unit.   The clip electrode according to claim 1, wherein the movement suppressing unit is a second positioning unit that positions the second end of the spring.   The clip electrode according to claim 1, wherein the movement suppressing unit is a pressing member that presses the spring from a side facing the spring mounting unit.   The clip electrode according to any one of claims 1 to 3, wherein the positioning portion is a concave portion, and a rib for preventing contact between the main body portion of the spring and the finger is provided in proximity to the concave portion.

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