JPH028173Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to the improvement of the mounting shaft of instrument pointers, etc., and eliminates the need for a spiral spring, which was conventionally required to return the pointer to its original base point. It is something.

[Conventional technology]

As shown in FIG. 1, the mounting shaft of the conventional instrument pointer 6 has a spiral spring 4 wound around a movable shaft 1 via a fixing ring 3, and the outer end of the spiral spring 4 is attached to a support 5, frame, etc. By fixing it, the repulsive force of the spiral spring 4 can be used for control and return.

[Problem that the invention attempts to solve]

However, the work of assembling the spiral spring 4 is time-consuming and has been a major obstacle to improving productivity.

[Means for solving the problem] The mounting shaft for instrument pointers, etc. of this invention eliminates the above-mentioned drawbacks of the conventional example, and consists of a torsion band made of a leaf spring connected and fixed in the axial direction of the movable shaft, and this Supports arranged at predetermined intervals on the outer periphery of the torsion band, one end of which is slidably inserted into the lower end of the movable shaft, and the other end of which is fixed to a frame within the housing of the instrument, etc., along with the end of the torsion band. It is characterized by having a tube.

[Effect]

By doing this, there are no restrictions on the connection of the movable shaft 11 with the drive system, and the degree of freedom in terms of structure is greatly improved, making design extremely easy.

〔Example〕

Hereinafter, one embodiment of the mounting shaft for a meter pointer, etc. of this invention will be described in detail with reference to the drawings.

In the example shown in FIG. 2, the tip of a torsion band 12 made of a plate spring is fixed in the axial direction of the movable shaft 11, and the other end of this torsion band 12 is fixed to a frame 13. In this example, the movable coil 14 is suspended from the bottom surface of the movable shaft 11 in a cylindrical shape.
The movable shaft 11 and the torsion band 12 are regulated to be connected in a straight line by slidably fitting the upper ends of the support tubes 15, which are mounted on the outer periphery of the torsion band 12 at predetermined intervals, into the inside of the torsion band 12. . 16 is a guideline.

Next, FIG. 3 shows another embodiment, in which the attachment part of the movable shaft 11 side to the torsion band 12 is made to protrude, and this attachment part 17 is inserted into the cylinder from the upper surface of the support cylinder 15, and the outer circumference A bearing 18 mounted on the support cylinder 15 side is brought into contact with the movable shaft 11 and the torsion band 12 to connect them more firmly and to eliminate frictional resistance.

In the embodiment shown in FIG. 4, the tip of the attachment portion of the movable shaft 11 to which the torsion band 12 is attached protrudes above the pivot, and the pivot 19 is inserted into the support cylinder 15 from the upper surface thereof. It is pivotally supported by a pivot 20 formed with a through hole through which the torsion band 12 passes.

In the example shown in FIG. 5, the attachment part of the movable shaft 11 side to the torsion band 12 is protruded so as to have an enlarged diameter at the tip, and this enlarged diameter part 21 is inserted into the groove 22 formed on the inner periphery of the upper end of the support cylinder 15. Fitted in a slidable manner,
The expanded diameter portion 21 can be attached to the groove 22 by overlapping the support tube 15 cut in half into a cylindrical shape so that the expanded diameter portion 21 fits into the groove 22, and then fixing it with adhesive or the like. good.

Although the moving coil 14 is fitted onto the outer periphery of the support cylinder 15, the moving coil 14 may be formed at the upper part. Of course, in the structure shown, it is advantageous that the torsion band 12 can be made long. Further, instead of the moving coil 14, a conventional gear may be used.

[Effect of idea]

Since the mounting shaft for the instrument pointer, etc. of this invention is constructed as described above, it is possible to obtain wide-angle torque linearity, eliminate the need for a spiral spring, significantly save space, and achieve a significant simplification of the instrument. .

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a conventional example, and FIGS. 2 to 5 are cross-sectional views showing the mounting shaft of the instrument pointer, etc. of this invention. 11...Movable axis, 12...Twisted band, 13
... Frame, 15 ... Support cylinder, 17 ... Mounting part, 18
... Bearing, 19 ... Pivot, 20 ... Pivot bearing, 21 ... Expanded diameter section, 22 ... Concave groove.

Claims (1)

[Scope of utility model registration request] A torsion band 12 made of a leaf spring is connected and fixed in the axial direction of the movable shaft 11, and the torsion band 12 is arranged at a predetermined interval on the outer circumference of the torsion band 12, and the tip is slidably inserted into the lower end of the movable shaft 11, A mounting shaft for an instrument pointer, etc., characterized in that the other end thereof, together with the end of the above-mentioned torsion band 12, is provided with a support tube 15 fixed to a frame 13 within a housing of the instrument, etc.