JPH0252122B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a holder that is mainly used in medical equipment and holds a held object made of a tubular member such as a separator or a column.

<Prior Art> FIGS. 3 and 4 are cross-sectional views of the structure of a conventional example of the above-mentioned holder. In the figures, 1 is a held body that is, for example, a tubular shape whose interior is filled with a sample, etc., and 2a and 2b are, for example, Holder pieces 3a and 3b are formed by bending the tip of one spring plate into a semicircular shape.
2b is a spring for pressing each; 4 is a case for storing springs 3a, 3b, etc.; 5 is a rotating shaft for rotating the holder pieces 2a, 2b; 6 is a positioning groove located toward the center of the rotating shaft 5; The rotary body 7 provided engages with the groove of the rotary body 6 to rotate the rotary body 6.
A leaf spring 8 determines the position of the rotating shaft 5.
A case 9 is supported by a plate 9 having a plurality of holes bored in the circumferential direction and a rotary shaft 5 fixed to the center thereof, and 10a and 10b are sunk into the holes of the plate to position the plate 9. ball,
11a and 11b are springs for pressing the balls 10a and 10b against the plate 9; 12a and 12b are push screws; and 13 is a shaft stopper. In the holder configured as shown in FIG. 3, the click position is determined by the engagement of the groove of the rotating body 6 and the plate spring 7, and the holder piece 2 is moved by the elastic force of the springs 3a and 3b.
The pressing forces a and 2b are determined.
Further, in the holder configured as shown in FIG. 4, the click position is determined depending on which hole in the plate 9 the balls 10a, 10b sink into, and the holder pieces 2a, 2a, 2b are moved by the elastic force of the springs 3a, 3b. 2
The pressing force of b is determined.

<Problems to be Solved by the Invention> However, in the embodiment described above, the leaf spring 7 and the spring 11a for click positioning are used separately from the springs 3a and 3b that determine the pressing force of the holder pieces 2a and 2b. , 11b, the disadvantage is that the number of parts increases and the size also increases. The present invention has been made in view of the drawbacks of the conventional example, and its object is to provide a holder with a simple structure in which a mechanism for determining the pressing force of the holder pieces 2a, 2b and a mechanism for determining the click position are integrated. Our goal is to provide the following.

<Means for Solving the Problems> A feature of the present invention that solves the above-mentioned problems is that in the holder, the spring that restores the movement of the linear axis has a holding force that presses the ball and determines the click position. This is because the holder piece has a holder holding force that presses the object to be held.

<Example> Hereinafter, the present invention will be explained in detail using figures. 1 and 2 are cross-sectional views of the structure of an embodiment of the present invention. In the figures, the same symbols as in FIGS. 3 and 4 have the same meanings, and redundant explanation will be omitted here. In addition, 15 is a linear axis that performs linear movement in the left and right direction on the paper surface of FIGS. 3 and 4;
6 is a nut, 17a and 17b are spring guides, 18 is a spring, 19 is a case for housing the spring 18, etc., and 20 is provided with a plurality of click holes in the circumferential direction, and the center is penetrated by the linear shaft 15. Plate, 21a, 21b are balls, 22 is holder case, 23a, 23b
is a hinge, 24 is a stopper made of, for example, a plate-like member, and 25 is an E-ring. In the embodiment of the present invention having such a configuration, when the held object 1 is held, it is in a state as shown in FIG. 1, and the linear shaft 15 is pulled to the right in FIG. 1 by the elasticity of the spring 18. It's dark. In addition, the balls 21a, 21b
The clip position is determined by which clip hole in the plate 20 the clip is sunk into.
In this state, a force as shown by the bold line arrow in FIG. ing. Furthermore, removal and attachment of the held object 1 are performed as follows. That is, force is applied to the holder pieces 2a, 2b with fingers or the like, for example, as shown by the thin arrows in FIG. This force causes the hinges 23a, 23b, the holder piece 2a,
2b rotates, the linear shaft 15 moves to the left on the plane of FIG. 2, resulting in the state shown in FIG. In this state, while continuing to apply force to the holder pieces 2a and 2b as indicated by the thick arrows in FIG.
are removed and installed. Furthermore, the first
When the case 22 is rotated around the linear axis 15 in the state shown in the figure, the holder piece 2 is attached to the case.
a, 2b, plate 20, etc. are rotated, and balls 21a, 21b are sunk into click holes provided in plate 20 after rotation, and a new click position is determined. .

<Effects of the Invention> According to the present invention as described in detail above, since the spring 18 is configured to generate the holder retention force and also generate the retention force for determining the click position, the holder pieces 2a and 2b are A holder with a simple structure in which a mechanism for determining the force for pressing the object 1 to be held and a mechanism for determining the click position are integrated is realized. In addition, holder pieces 2a and 2b
When the plate 22 is rotated, the balls 21a, 21b are placed on the parts of the plate 22 other than the click holes, so the balls 21a, 21b are placed on the click holes.
Compared to when stopped when b is depressed, spring 1
The elastic force of 8 increases and ultimately the holder piece 2
The force with which a and 2b hold the object 1 increases.
Therefore, there is an advantage that the held object 1 can be effectively prevented from slipping off when the holder pieces 2a, 2b are rotated.

[Brief explanation of drawings]

1 and 2 are sectional views of the structure of an embodiment of the present invention, and FIGS. 3 and 4 are sectional views of the structure of a conventional example. 1... object to be held, 2a, 2b... holder piece,
15... Straight axis, 16... Nut, 18... Spring, 19, 22... Case, 20... Plate, 21a, 21b... Ball, 23a, 23b
... Hinge, 24 ... Stopper.

Claims (1)

[Claims] 1. A pair of holder pieces that press and hold an object to be held, a hinge that rotates in response to the movement of the holder pieces, and a linear motion that moves in a straight line in response to the rotation of the hinge. A shaft, a stopper that fixes the end of the holder piece to the tip of the linear shaft, a spring that restores the movement of the linear shaft, and a plurality of click holes provided in the circumferential direction, It is equipped with a plate through which a shaft is inserted, and a ball that sinks into a click hole in the plate to determine the click position, and a holding force that presses the ball to determine the click position, and the holder piece is attached to the held object. A holder characterized in that the spring provides a holder holding force that presses the holder. 2. The holder according to claim 1, wherein the stopper is a plate-like member.