JPH0320767Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention provides a method for using the PH measuring electrode when measuring or calibrating the sensitive part of the PH measuring electrode etc. by immersing it in a liquid to be measured or a standard calibration solution. The present invention relates to an electrode stand suitable for holding objects such as the like.

(Prior Art) In _a conventional electrode stand, for example, as shown in _FIG .
Spring S ₁ and S ₂ are provided on both sides of L ₁ , and springs S ₃ and S ₄ are provided on both sides of movable connecting rods L ₃ and L ₄ .

(Problems to be solved by the invention) In a conventional electrode stand, for example, a spring _S1 is provided only on one side of the movable connecting rod _L1 , and only a spring _S3 , for example, is provided on one side of the movable connecting rods _L3 and _L4 . In this case, the movable connecting rods _L1 to _L4 will be strained by the elasticity of the springs _S1 and _S3 , which will hinder the smooth rotation of the movable connecting rods. Spring S ₁ and S ₂ on both sides of ₁
In addition, springs S ₃ and S ₄ are provided on both sides of the movable connecting rods L ₃ and L ₄ to prevent distortion of the movable connecting rods. Movable connecting rod L ₁ or in the intermediate support MS requires a large number of springs
Coupled with the fact that _L4 has four pinning points, the overall configuration becomes complicated.

(Means for Solving the Problems, Embodiments) The object of the present invention is to eliminate the above-mentioned conventional drawbacks and realize an electrode stand with a simple structure.

FIG. 1 is a side view with a partial cross section showing an embodiment of the present invention, in which numerals 1 to 4 are movable connecting rods each having a U-shaped cross section, and 5 a lower support member having a U-shaped cross section. , the lower ends of the movable connecting rods 1 and 2 inserted into the upwardly directed concave portions are rotatably supported around support shafts 6 and 7. Reference numeral 8 denotes a support base, and the lower support 5 is fixed by inserting a support shaft 10 protruding from the bottom of the lower support 5 into a support hole 9 bored in the center of the support base.
is rotatably supported around a support shaft 10. Reference numeral 11 denotes an intermediate support, which has a U-shaped cross section and a substantially triangular side shape, and allows the upper ends of the movable connecting rods 1 and 2 inserted into the recesses to be rotated around respective support shafts 12 and 13. Support freely. In addition, movable connecting rod 1
and 2 are installed so that the respective groove-like recesses face each other, whereas the movable connecting rods 3 and 4 are installed so that the respective groove-like recesses both face downward, and the respective bases are attached to the recesses of the intermediate support 11. The base of the movable connecting rod 3 is rotatably supported by a support shaft 14, and the base of the movable connecting rod 4 is rotated around the support shaft 12 using the support shaft 12 in common. It is supported so that it can move freely.
For this purpose, the width and depth of the groove-like concave portion of the movable connecting rod 4 are set appropriately so that the upper end portion of the movable connecting rod 1 is stacked so as to fit into the concave portion at the base of the movable connecting rod 4. Reference numeral 15 denotes an electrode support, as shown in the plan view in FIG. The tips of the movable connecting rods 3 and 4 inserted into the recesses of the support shafts 18 and 1
It is rotatably supported around 9. Although the figure shows an example in which the electrode support notches 16 and 17 are provided on both sides of the flat plate-shaped portion of the electrode support 15, it is preferable to make one electrode support hole in the center of the flat plate-shaped portion. You can. Reference numeral 20 denotes a spring, one end of which is fixed by, for example, a support shaft 7, and the other end of which is a stopper 2 protruding from the middle inner bottom surface of the groove-shaped recessed portion of the movable connecting rod 1.
1 fixed, movable connecting rods 1 and 2 and spring 2
0 are formed in the same plane. 22 is also a spring; one end is fixed to, for example, the support shaft 14, and the other end is fixed to a stopper 23 protruding from the upper surface of the middle part of the movable connecting rod 4. It is formed so that it lies within the plane. Reference numeral 24 denotes a crimping force adjustment screw, which is comprised of a female thread that engages with a male thread cut into the outer end of the support shaft 6, and an operating knob provided at the outer end of this female thread. 25
It is a crimp force adjustment screw with the same structure as 24, and the support shaft 12
It is screwed into a male thread cut into the outer end of the

Incidentally, instead of providing the spring 20 as shown, it may be provided diagonally from the lower end of the movable connecting rod 1 to the middle part of the movable connecting rod 2.
Also, instead of being provided as shown, a movable connecting rod 4 is provided.
The movable connecting rod 3 may be provided obliquely from the base to the middle of the movable connecting rod 3. Also, instead of screwing the pressure adjustment screw 24 onto the support shaft 6, the pressure adjustment screw 2 is attached to a male thread provided at the outer end of the support shaft 7 at the lower end of the movable connecting rod 2.
The present invention can also be carried out by screwing 4 together.

(Function) In the electrode stand of this invention, the spring 22
The elasticity of the spring 20 makes it easy to rotate the movable connecting rods 3 and 4 upward, and the elasticity of the spring 20 also makes it easy to tilt the movable connecting rods 1 and 2 backward, while resisting the elasticity of the spring 22. When rotating the movable connecting rods 3 and 4 downward, the electrode support 15 and the movable connecting rods 3 and 4
When the movable connecting rods 1 and 2 are tilted forward, rotation can be made smooth and easy with the help of the dead weight of the electrode (including the dead weight of the electrode if the electrode is supported by the electrode support 15). Similarly, the electrode support 15, movable connecting rods 3 and 4, etc. can be rotated smoothly and easily by their own weight, and the lower support 5 can rotate 360 degrees around the support shaft 10. Therefore, the electrode supported by the electrode support 15 can be smoothly moved to any position. The electrode support 15 has each end connected to the support shafts 12, 14, 1.
Since it is supported by movable connecting rods 3 and 4 which are rotatably supported by electrodes 8 and 19, the flat plate of the electrode support 15 can be The shaped part is always kept horizontal, and therefore the electrode supported by it can always be kept vertical.

In addition, by appropriately tightening the crimping force adjustment screw 24, the side wall of the lower support 5 is crimped to the lower end of the movable connecting rod 1, and this crimping force and the spring 20
The movable connecting rods 1 and 2 can be fixed in a desired forward or backward tilted state by balancing the rotational force of the movable connecting rod 1 caused by the elasticity of the movable connecting rods 3, 4, the weight of the electrode support 15, etc. , crimping force adjustment screw 25
By suitably tightening the movable connecting rods 3 and 4, the movable connecting rods 3 and 4 can likewise be fixed at the desired angular position, so that the electrode supported on the electrode support 15 can be fixed at any desired position.

(Effects of the present invention) In the electrode stand of the present invention, the spring 20
Since the movable connecting rods 1 and 2 are provided in the same plane, even one spring does not cause distortion to the movable connecting rods 1 and 2, and therefore, their rotation becomes smooth. Similarly, since the spring 22 is disposed in the same plane as the movable connecting rods 3 and 4, the rotation thereof can be made smoothly without causing any strain on the movable connecting rods 3 and 4. I can tighten it.

Furthermore, since the upper end of the movable connecting rod 1 and the base of the movable connecting rod 4 are supported by a common support shaft 12, and the number of support shafts in the intermediate support 11 is three, Coupled with the fact that only two springs are required, the overall configuration can be simplified.

Furthermore, since a crimping force adjustment screw 25 is screwed onto the common support shaft 12, by tightening this, the side wall of the intermediate support 11 is crimped to the upper end of the movable connecting rod 1 and the base of the movable connecting rod 4. At the same time, the lower end of the movable connecting rod 1 or 2 can be fixed by tightening the crimping force adjusting screw 24, so that the electrode can be reliably fixed in any desired position.

Furthermore, since the upper end of the movable connecting rod 1 and the base of the movable connecting rod 4 are supported by the common support shaft 12 as described above, when the movable connecting rods 3 and 4 are rotated downward, The movable connecting rod 1 can be stacked so as to fit into the groove-like recess of the movable connecting rod 4, and the spring 22 can fit into the groove-like recess of the movable connecting rod 3 to bring the movable connecting rods 3 and 4 into close contact with each other. It is convenient for carrying, storing, etc. because it can be converted into

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2 is a plan view of the electrode support portion thereof, and Fig. 3 is a diagram showing an example of a conventional electrode stand. Connecting rod, 5: Lower support, 6, 7, 1
2, 13, 14, 18 and 19: support shaft, 8: support stand, 9: support hole, 10: support shaft, 11: intermediate support, 15: electrode support, 16 and 17: electrode support notch, 20 and 22: spring, 21 and 23: stopper, 24 and 25: crimping force adjustment screw,
L ₁ to L ₄ : Movable connecting rod, MS: Intermediate support, S ₁
or S ₄ : Spring.

Claims (1)

[Scope of utility model registration request] First and second movable connecting rods, each of which has a lower end inserted into a recess of a lower support having a U-shaped cross section, and a first and second movable connecting rod having each upper end inserted into a recess of an intermediate support having a U-shaped cross section; A third movable connecting rod is inserted into the concave part of the intermediate support, and the third movable connecting rod is inserted into the concave part of the support having a U-shaped cross section and whose tip end is provided at the base of the electrode support. the upper end of the first movable connecting rod is inserted into the base recess;
a fourth movable connecting rod whose tip end is inserted into a recess of a support provided at the base of the electrode support;
and a support shaft that rotatably supports each lower end of the second movable connecting rod on the lower support, and a support shaft that rotatably supports the upper end of the second movable connecting rod on the intermediate support. a common support shaft that independently rotatably supports the upper end of the first movable connecting rod and the base of the fourth movable connecting rod on the intermediate support; a support shaft that rotatably supports the base of the movable connecting rod on the intermediate support; and a support shaft that rotatably supports the base of the movable connecting rod on the intermediate support; and a support shaft that rotatably supports the third and fourth movable connecting rods on the support of the electrode support. a support shaft to support, a spring provided obliquely between the first and second movable connecting rods in the same plane as the first and second movable connecting rods, and the third and fourth movable connecting rods. a spring provided obliquely between the third and fourth movable connecting rods in the same plane as the first or second movable connecting rod;
A crimp force adjustment screw screwed into a male thread provided on the outer end of the support shaft at the lower end of the movable connecting rod, and a common base between the upper end of the first movable connecting rod and the fourth movable connecting rod. An electrode stand comprising: a crimping force adjusting screw screwed into a male screw provided at the outer end of a support shaft; and a support base rotatably supporting the lower support.