JP2605618Y2 - Laboratory stand and its accessories - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an experimental stand and its accessories used for chemical and physical experiments in schools.

[0002]

2. Description of the Related Art Conventionally used experimental stands have no means for holding a gas burner, or have means for holding a main body of a gas burner. In addition, to the base of the experimental stand, vinegar
Some of which means for fixing the Ke Lumpur is provided.

Further, the tip of a shaft screw for preventing the spread of the clip-type free scissors, which is an accessory of the experimental stand, is configured to abut on the flat inner wall surface of the other main body of the free-saw scissors. When the size of an instrument or the like to be inserted between the free scissors changes, the opening of the free scissors is adjusted by operating the shaft screw.

[0004]

The experimental stand according to the prior art described above tends to be unstable if there is no means for holding the gas burner, and is provided with means for holding the body of the gas burner itself. However, there is a drawback that when the type of gas burner used changes, the gas burner may become unusable.

[0005]

[0006] In addition, it is sometimes necessary to measure the length during the experiment. However, if the scale is fixed to the table, the length measurement is not only difficult, but the standard of measurement is arbitrary. There was a disadvantage that it could not be set. Furthermore , in the case of the clip-type free scissors, when the size of the device sandwiched between the free scissors changes greatly, the position of the shaft screw for preventing the spread must be largely changed, and the operability is poor and it is difficult to use. There were many disadvantages.

The present invention has been proposed in view of the above-mentioned conventional drawbacks, and provides an experimental stand which can stably hold a gas burner and which can be easily used for length measurement and the like. The operability of the parallel slide type scissors, which is a product, is improved, and even if the size of the device sandwiched between the clip type scissors changes greatly, the troublesome operation to greatly change the position of the shaft screw for preventing spread is difficult. It is not necessary and provides easy-to-use flexible scissors.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a groove for accommodating a hose of a gas burner is provided on a leg of a stand of a laboratory stand, and a hose for accommodating the hose accommodated in the groove is provided. A hose stopper for holding and releasing is provided.

Further, a tape measure mounting means is provided on the stand of the experimental stand instead of the scale.

Further , the inner wall surface of the other main body of the clip-type universal scissors, to which the tip of the shaft screw for preventing spread is abutted, is formed in an arc shape around the pivot point of the universal scissors. is there. In addition, a shaft screw for preventing the spread of the clip-type universal scissors is inserted into a hole provided in one main body of the universal scissors, and the distal end opening is freely disengaged from the shaft screw, and the diameter increases toward the distal end. A nut is screwed on the outer periphery of the split engagement cylinder having a U-shaped cross section, and the tip of the split engagement cylinder comes into contact with the shaft screw insertion hole of the free scissors body. A stopper having a tapered surface for reducing the diameter is provided.

[0011]

[Function] The experimental stand of the present invention and its accessories such as the parallel slide type free scissors and the clip type free scissors,
With such a configuration, the gas burner is stably held by housing the hose in the groove provided in the leg of the base and stopping it with the hose stopper.

Also, the tape measure is attached to the table via tape measure attaching means, and is used for measuring the length during the experiment.
In addition , the clip-type universal scissors can greatly change the opening of the universal scissors by slightly operating the shaft screw for preventing spread, and the tip of the shaft screw can be changed to the arc-shaped inner wall surface of the other body of the universal scissors. , So that spreading is prevented.

[0013] Further, the distal end of the split-type engaging cylinder that engages with the shaft screw of the clip-type free scissors abuts a stopper having a tapered surface and is reduced in diameter. When the nut to be screwed is tightened, the position of the shaft screw is fixed. When the nut is loosened, the engagement of the split engagement cylinder is released, and the shaft screw can be freely moved in a free state.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on an embodiment shown in the drawings. FIG. 1 is an exploded perspective view of an experimental stand showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a different use state of the experimental stand shown in FIG.

In FIG. 1, reference numeral 1 denotes a stand of an experimental stand, 2 denotes a column standing on the table 1, and the column 2 is divided into three equal parts. The divided portions of the column 2 are provided with a screw 3 on one side and a screw hole 4 on the other side so that they can be connected to each other. The height can be changed to 1/3 or 2/3. However, the columns 2 do not necessarily have to be equally divided, and other methods of connecting the columns can be adopted. If the length of the column 2 can be changed in this way, the length of the column 2 can be optimally set in accordance with the purpose of use in performing an experiment, which is extremely convenient.

Further, screw holes 5 are provided on the base 1 for erecting a plurality of columns 2 at predetermined intervals, and the plurality of columns 2 are provided depending on the purpose of the experiment to be performed. If necessary, it can be handled without preparing multiple experimental stands. The number and position of the columns 2 to be used at this time can be appropriately selected depending on the number and position of the screw holes 5 provided on the table 1, and the screw holes 5 are also provided on the legs 6 of the table 1. You may keep it. Further, the length of the column 2 to be used can also be appropriately selected.

However, the means for erecting the support 2 on the base 1 may employ other methods other than the screwing type of the screw 3 and the screw hole 5 provided at the lower end of the support 2, It is desirable to divide the column 2 so that it can be used in common with a means for connecting the two to each other.

FIG. 3 is a perspective view of a leg of an experimental stand according to an embodiment in which the leg of the stand is devised. In the figure, reference numeral 6 denotes one leg of the stand 1 of the experimental stand. The leg 6 has a V-shaped groove 7 for accommodating a hose of a gas burner.
It is provided across the leg 6. Reference numeral 8 denotes a hose stopper for holding and releasing the hose housed in the groove 7, which is formed by bending a round bar into a mountain shape corresponding to the V-shaped groove 7, and the base of which is a leg 6. A hose screw 8 is rotatably inserted into a hole 10 provided in a wall surface of a step portion 9 provided inside the stepped portion 9 and screwed into an upper surface of the leg portion 6.
Is pressed to prevent its rotation.

Therefore, to set the gas burner,
Loosen the set screw 11 and rotate the hose stopper 8 in the direction A so that the hose is housed in the V-shaped groove 7 and the hose stopper 8
When the set screw 11 is tightened after returning to the direction B, the shape of the hose is the same even if the type of gas burner is different, so that the gas burner can be stably held, which is very convenient. .

FIG. 4 is a perspective view of another embodiment in which the legs of the stand of the experimental stand are modified. Also in this embodiment, a V-shaped groove 7 for accommodating the hose of the gas burner is provided in the leg 6 across the leg 6, and is accommodated in the V-shaped groove 7. A hose stopper 8 ′ for holding and releasing the hose is formed by bending a flat plate into a mountain shape corresponding to the V-shaped groove 7, and its base is detachably attached to the leg 6 by a set screw 11. Have been. However, the shape of the groove for accommodating the hose, the shape of the hose stopper, and the like are not limited to the shapes and the like of the embodiment shown in FIGS. 3 and 4, and can be arbitrarily designed.

[0021]

Next, FIG. 5 is a perspective view of one embodiment showing a state where a tape measure is attached to a stand of an experimental stand. 1 in the figure
Reference numeral 5 denotes an accommodation groove for accommodating a tape measure 16 provided on a part of the back side of the base 1, and a base 17 of a tape measure retainer 18 is rotatable in a hole 17 provided on a side wall of the accommodation groove 15. , And the set screw 19 screwed to the upper surface of the base 1 is tightened to press the base of the tape measure retainer 18 to prevent its rotation.

Accordingly, the set screw 19 is loosened to rotate the tape measure holder 18 in the direction A, the tape measure 16 is accommodated in the accommodation groove 15, and the tape measure holder 18 is rotated in the direction B to press the tape measure 16. When the set screw 19 is tightened in this state, the tape measure 16
Can be mounted on the base 1 very easily. In addition,
At this time, if the base of the tape measure holder 18 can be moved in the direction C, the tape measure 16 can be attached and detached very easily, which is very convenient. However, the tape measure mounting means is not limited to the illustrated embodiment, and it goes without saying that various design changes can be made.

[0024]

[0025]

Next, FIG. 6 is a sectional view of a clip-type universal scissors showing an embodiment in which a clip-type universal scissors which is an accessory of the experimental stand is devised. In the figure, reference numeral 29 denotes a clip-type free scissors, which is fixed to the column 1 via a long arm 30. The flexible scissors 29 are assembled by pivotally supporting a pair of main bodies 31 and 32 with pins 33. Numeral 34 denotes a shaft screw for preventing spread, and an inner wall surface 35 of the other main body 31 of the free scissors 29 to which the tip thereof is abutted is provided with a pin 33 serving as a pivot point.
Is formed in an arc shape centered on the
When the shaft screw 34 screwed to one of the main bodies 32 is loosened, the other main body 31 freely rotates around the pin 33 ,
When the shaft screw 34 is tightened, the tip of the shaft screw 34 comes into contact with the inner wall surface 35, so that the rotation of the other main body 31 is prevented, and the spreading is prevented.

At this time, since the inner wall surface 35 is formed in an arc shape, the shaft screw 34 is only slightly rotated,
Since the rotation of the other main body 31 can be permitted or the spread can be prevented, even if the size of the device or the like sandwiched by the free scissors 29 changes greatly, the operation of the shaft screw 34 is only a little, which is very convenient. It is.

FIG. 7 is a sectional view showing an embodiment in which a means for moving and fixing a shaft screw for preventing the spread of the clip-type free scissors, which is an accessory of the experimental stand, is devised.
FIG. 8 is a sectional view showing a state in which the shaft screw is fixed by the moving and fixing means. In the drawing, reference numeral 34 denotes a shaft screw for preventing spread, which is inserted into a hole 36 provided in one main body 32 of the free-scissors. Reference numeral 37 denotes a split-type engagement cylinder having a cross section of which the opening at the distal end is freely disengageable from the shaft screw 34 and whose diameter increases toward the distal end, and a nut 38 is screwed onto the outer periphery thereof. I have. 39 is freely bus
With a stopper provided around the hole 36 provided in the main body 32 of the Sami, Its stopper 39, a tapered surface 40 which the distal end portion of the split engaging cylinder 37 is reduced in diameter in contact is provided .

[0029] Accordingly, in a state in which the split engaging cylinder 37 is disengaged from the shaft screw 34, as shown in FIG. 7, the shaft screw 34 is able to move within the bore 36 freely, Conversely, as shown in FIG. 8, when the distal end of the split-type engagement cylinder 37 is brought into contact with the tapered surface of the stopper 39, the diameter of the split-type engagement cylinder 37 is reduced, and the opening of the distal end is formed with a shaft screw. When the nut is engaged with the nut 34 and the nut 38 is tightened, the shaft screw 34 is fixed at the position of the stopper 39, and the movement is prevented. At this time, the tip of the shaft screw 34 comes into contact with the inner wall surface of the other main body 31 of the free scissors 29 to prevent the rotation of the main body 31 and prevent spreading. since freely by simply loosening the 38, also vary greatly in size of the instrument, such as sandwiching the universal shears 29, movement of the shaft screw 34 can be performed smoothly in a short time, it is very convenient and easy operation . The present invention is not limited to the structure of each embodiment shown in FIGS. 1 to 8 , and it goes without saying that the design can be changed as appropriate.

[0030]

As described above, in the experimental stand and its accessories according to the present invention, the gas burner accommodates the hose in the groove provided on the base, and the hose is held and released by the hose. It is made to be done with a stop,
Even if the type of gas burner changes, the gas burner can be set stably.

Further, since a tape measure is attached to the table, it is very easy to measure various lengths during the experiment. Furthermore , since the inner wall surface of the clip-type free-scissors to which the tip of the shaft screw comes in contact is in an arc shape, the opening of the free-scissors can be greatly changed just by turning the shaft screw a little, preventing spreading. You can do it right away.

Further, the tip of the split-type engaging cylinder is tapered by a specially-shaped split-type engaging cylinder that can be disengaged from the shaft screw of the clip-type free scissors and a nut that is screwed onto the outer periphery of the split-type engaging cylinder. Since it is made to abut against the stopper having a reduced diameter and tightened and fixed, the engagement of the split engagement cylinder can be immediately released just by loosening the nut, and the shaft screw can be freely moved, Even if the size of an instrument or the like sandwiched in the opening of the universal scissors changes greatly, it can be quickly responded. It has many advantages, and is extremely convenient for practical use.
The present invention can provide an experimental stand and a clip type scissors as an accessory thereof.

[0033]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a general experimental stand for explaining an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a different use state of the experimental stand shown in FIG. 1;

FIG. 3 is a perspective view of a leg of an experimental stand showing an embodiment in which the leg of the stand is devised.

FIG. 4 is a perspective view of a leg of an experimental stand according to another embodiment in which the leg of the stand is modified.

FIG. 5 is a perspective view of one embodiment showing a state where a tape measure is attached to a stand of an experimental stand.

FIG. 6 is a cross-sectional view of the clip-type universal scissors showing an embodiment in which a clip-type universal scissors which is an accessory of the experimental stand is devised.

FIG. 7 is a cross-sectional view showing an embodiment in which a means for moving and fixing a shaft screw for preventing spread of a clip-type free scissors, which is an accessory of the experimental stand, is devised.

8 is a cross-sectional view showing a state where a shaft screw is fixed by the moving and fixing means shown in FIG. 7 ;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand of experimental stand 2 Prop 3 Screw 4 Screw hole 5 Screw hole 6 Leg 7 V-shaped groove 8 Hose stopper 8 ′ Hose stopper 9 Step section 10 Hole 11 Set screw 15 Housing groove 16 Tape measure 17 Hole 18 Tape measure Holder 19 Set screw 29 Clip-type free scissors 30 Arm 31 A pair of free scissors main bodies 32 A pair of free scissors main bodies 33 Pin 34 Shaft screw 35 Inner wall surface 36 Hole 37 Divided engagement cylinder 38 Nut 39 Stopper 40 Tapered surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 56-57762 (JP, U) Japanese Utility Model Sho 49-48487 (JP, U) Japanese Utility Model Sho 55-122838 (JP, U) Japanese Utility Model Sho 11- 3157 (JP, Y1) Jigyo 89764 (JP, Y1) Jigyo 10-2148 (JP, Y1) Registered utility model 52197 (JP, Z1) Tokyo Scientific Instruments Association '80 / '81 (7th edition) September 15, 1980, page 311, page 559, page 733 (58) Fields investigated (Int. Cl. ⁷ , DB name) B01L 9/00

Claims (4)

(57) [Scope of request for utility model registration] 1. A groove for accommodating a hose of a gas burner is provided in a leg of a stand of an experimental stand, and a hose stopper for holding and releasing the hose accommodated in the groove is provided. An experimental stand to do. 2. An experimental stand, wherein a tape measure attaching means is provided on a stand of the experimental stand. 3. The inner wall surface of the other main body of the free scissors to which the tip of a shaft screw for preventing spread of the clip-type free scissors, which is an accessory of the experimental stand, is brought into contact with the pivot point of the free scissors. A clip-type free scissors formed in an arc shape . 4. A shaft screw for preventing spread of a clip-type universal scissors, which is an accessory of the experimental stand, is inserted into a hole provided in one main body of the universal scissors, and a tip end opening is connected to the shaft screw. The nut can be screwed around the outer periphery of the split-type engaging cylindrical body whose cross-section increases in diameter as it goes to the tip, and is divided around the hole for inserting the shaft screw of the body of the universal scissors. A clip-type free scissors provided with a stopper having a tapered surface which is reduced in diameter by abutment of a tip end portion of a mold engagement cylinder.