JPH0733148Y2 - Thermal analysis balance sample attachment / detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sample attachment / detachment device for a thermal analysis balance, which detects a weight change associated with a temperature change in an arbitrary liquid or solid sample.

In such a balance for thermogravimetric analysis, a sample suspended on one arm is inserted into an electric furnace, and an electric element for detecting temperature and other physical quantities is attached to the sample part, and a lead wire is attached to the balance. It is necessary to pull it out from the fulcrum part. For this reason, it is necessary to connect a long auxiliary arm having a probe for detecting a sample, temperature and the like to the end of one arm of the balance and to provide an electrical signal connector including a plug and an outlet at the connecting portion. However, the conventional device has a drawback that the arm and the connector are not easily attached and detached and a large force is required, and the device is easily damaged.
Therefore, the present invention provides a device in which the arm and the electrical connector can be attached and detached very easily, there is no risk of damaging the device, and the number of electrical circuits connected by the connector can be easily increased. It is a thing.

The present invention attaches a sample and an electrical detection element for temperature or other physical quantity to the tip, and attaches either a plug or an outlet of an electric circuit connector to the base end of an arm for inserting this into an electric furnace and a balance. The other end is attached to the tip of the arm, the arm is arranged so as to be inserted and removed in the direction perpendicular to the arm of the balance, and the lever used for disconnecting the connector is provided. Therefore, by connecting the connector by pressing the arm in a direction perpendicular to the arm with the arm of the balance fixed to the clamp, the arm of the electric circuit can be connected. Further, when detached, the sample or the like is easily detached by operating the lever.

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is an enlarged view of a part of FIG. 1, and a further vertical section thereof, and FIG. 3 is a sectional view taken along the line AA of FIG. . Thus, the fulcrum 3 is provided on the base 2 in the case 1, and the arm 4 of the balance is suspended. A multi-terminal outlet 5 for an electric circuit is fixed to one end of the arm, and a plug 7 for fitting to the outlet is fixed to the base end of an arm 6 having a sample for thermogravimetric analysis attached to the tip, which is not shown. . Moreover, the arm 4 of the balance is provided with a concave portion 8 on the side of the outlet 5, and a dogleg-shaped portion 10 at one end of a lever 9 made of a strip-shaped leaf spring is inserted. Further, a portion 11 adjacent to this is U-shaped. It is bent to be inserted into the gap between the arms 4 and 6, and the tip 12 thereof is further projected upward.
The plug 7 is provided with a plurality of plug-in electric terminals 13, 13 ... And the outlet 5 is provided with tubular contacts 14, 14 ... To which the pins are fitted. Further, as shown in FIG. 1, a clamp 15 for fixing the arm 4 of the balance is provided on the base 2, a window 16 is formed on the case 1 so as to face the lever 9, and a cover plate 17 that can be detached is used to cover the window 16. Is. Further, the side wall is provided with an insertion hole 18 for the arm 6, and a protective tube is provided through an O-ring 19.
The openings of 20 are connected, and the electric furnace 21 is fitted into this protection tube. Although not shown, the sample attached to the tip of the arm 6 is arranged in the center of the electric furnace.

In the above-mentioned device, when exchanging the sample, the lid plate 17 is removed, and the clamp 15 is tightened.
When 12 is pushed in the direction shown by the arrow p in FIG. 3, the arm 6 is pushed upward by the bending of the leaf spring forming this lever 9, and the plug 7 is detached from the outlet 5. Therefore, the arm 6 can be taken out and the sample can be exchanged, and at the time of mounting the arm 6, the arm 6 can be connected to the arm 4 of the balance simply by pushing the arm 6 from above and fitting the plug 7 into the outlet 5. it can. As described above, in the device of the present invention, the arms of the balance are connected by using the outlet and the plug for connecting the electric circuit. Therefore, the structure is extremely simple and the lever 9 facilitates the disconnection. You can In addition, since the plug is only pressed from above when connecting, the sample exchange operation is extremely easy.

[Brief description of drawings]

1 is a front view of an embodiment of the present invention, FIG. 2 is an enlarged view of a part of FIG. 1, and a part thereof is longitudinally cut, and FIG. 3 is a sectional view taken along line AA of FIG. . In the figure, 1 is a case, 2
Is a base, 3 is a balance fulcrum, 4 is a balance arm, 5 is an outlet, 6 is a sample support arm, 7 is a plug, 9 is a lever, 15 is a clamp, 16 is a window, 17 is a window cover plate. .

Claims (1)

[Scope of utility model registration request] 1. A plug having a plurality of inserting electric terminals and one of outlets for fitting the plugs are fixed to the tip of an arm of a balance so that the arm is orthogonal to the inserting direction of the plug. A sample attachment / detachment device for a thermal analysis balance in which a lever for fixing the other of the plug and the outlet to the base end of an arm that supports the sample at the tip and attaching the plug to the outlet is attached to the arm of the balance.