JPH0464568B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pointer used in a meter, and particularly to a pointer using a balance weight for balancing the pointer.

[Conventional technology]

In recent years, various designs have been required for various instruments, and as a result, the shape of the pointer has also increased, and most of them change depending on the model in which the instrument is installed or each so-called minor change of that model.

By the way, in order to improve the index characteristics of pointer-indicating instruments, or to turn off the power,
In many cases, a balance weight is provided in order to maintain the instruction given immediately beforehand, as shown in, for example, Japanese Utility Model Application No. 60-92127 and No. 60-27320.

[Problems with conventional technology]

Conventionally used guidelines have been made by molding the balance weight into a predetermined shape from a material such as a lead alloy with an appropriate specific gravity, or by pressing it as a single piece, depending on its shape and placement position. One set of molds and press molds are required for each type of balance weight, and as mentioned above, if the shape of the pointer varies, the number of molds for the balance weight increases, and if there is a problem with accuracy, It is necessary to modify the mold, and when automating the production line with robots, etc., it is necessary to have something that can handle many types of balance weights, which is one of the obstacles to providing products at low prices. There is.

[Means to solve the problem]

In view of the above-mentioned problems, the present invention provides a balance weight for an instrument pointer, in which a balance weight placement portion is provided on the pointer or a member that is integrated with the pointer. It is characterized in that a predetermined amount of non-solid balance weight material is placed, and this balance weight material becomes solid and acts as a balance weight.

[Effect]

The balance weight material placed in a predetermined amount becomes solid and becomes a balance weight.

〔Example〕

1 and 2 are an exploded perspective view and a partial sectional view showing a first embodiment of the present invention.

In the figure, reference numeral 1 denotes a pointer, which is composed of an indicator portion 2 and a base portion 3. The base portion 3 is integrally formed with a pointer shaft press-fit hole 4 for press-fitting and fixing a pointer shaft extending from a meter (not shown). A hole 6 is formed to engage with a heat welding pin 5 provided in the portion 2, and the base portion 3 has a recess 7 on the pointer shaft side, and this recess 7 serves as a balance weight placement portion. Reference numeral 8 denotes a balance weight material, which is a non-solid material made by adding powdered lead to epoxy resin, for example, and is inserted into the indicator portion of the concave portion 7 of the base portion 3 from a pipe 9 whose amount can be controlled by appropriate means. 2 is injected in the opposite direction to the extending direction.

Balance weight material 8 injected in this way
becomes solid over time and becomes integrated with the base 3, acting as a balance weight. Note that the pointer 1 may be formed by integrally molding the indicating portion 2 and the base portion 3.

FIG. 3 shows a second embodiment of the present invention, and shows an example in which the present invention is applied to a device using a pointer cap.

In the figure, reference numeral 11 is a pointer, in which an indicator 12 and a base 13 are integrally formed.
A cap 14, which is a member integrated with the pointer 11, is placed over the base 13 of the needle.
The cap 14 has a generally concave portion corresponding to the pointer base 13, and a balance weight installation portion 15 is formed at the portion corresponding to the base 13 on the opposite side to the extending direction of the indicator portion 12. A balance weight material 16 is placed in the balance weight placement portion 15. In this case, since the balance weight material 16 is located between the pointer base 13 and the cap 14, it may be a material that becomes an elastically deformable balance weight. It may be one that is not integrated with 14.

FIG. 4 is a partial sectional view showing a third embodiment of the present invention. In this case, the pointer 21 is not provided with a base, the balance weight arrangement part 23 is formed at the lower part in the direction opposite to the extending direction of the indicator part 22, the pointer shaft press-fit hole 24 is formed at the center of rotation, and the above-mentioned When the balance weight is placed in a solid state at the balance weight placement part 23, the pointer 21
A balance weight material 25 is placed therein to be integrated with the balance weight material 25.

5 and 6 show a fourth embodiment of the present invention, with FIG. 5 being an exploded perspective view and FIG. 6 being a partial sectional view after assembly.

In the figure, reference numeral 31 denotes a pointer in which an indicator 32 and a base 33 are integrally formed, and the base is on the opposite side to the direction in which the indicator 32 extends on the side where the pointer shaft press-fit hole 34 is not provided, that is, on the front side. 33 is provided with a recess 35 serving as a balance weight placement portion, a balance weight material 36 is placed in the recess 35, and a lid member 37 is placed over the balance weight material 36. The lid member 37 is of the same color as the pointer 31, and is provided to eliminate the discomfort caused by directly viewing the balance weight when the balance weight material 36 becomes solid and is used as a balance weight. However, if the base of the pointer cannot be seen due to the endpaper etc. arranged on the instrument, it is not necessary to provide it.

According to each of the embodiments described above, the balance weight of the pointer is not formed singly using a molding die or a press die, so that the cost associated with manufacturing, changing, and correcting the die is unnecessary. In addition, when automating needle production,
There is no need to deal with balance weights of many different shapes, making automation much easier than before. Furthermore, there is an advantage that it is easy to change the weight depending on the type of pointer, or to change the weight for changes or corrections.

Note that the balance weight material according to the guidelines of the present invention includes epoxy resin mixed with powdered lead as described in the first embodiment (in that case, the specific gravity can be set by changing the mixing ratio), The adhesive may be a mixture of metal powder or other materials, or two different materials may be supplied in a predetermined ratio to the pointer or to the balance weight installation portion of a member that is integrated with the pointer. It may be a material that is cured at a fixed amount or a predetermined weight, and if balance weight materials with multiple specific gravity are prepared in advance, it is also possible to select the appropriate specific gravity from among them depending on the type of pointer. It is.

〔Effect of the invention〕

According to the present invention, since the balance weight of the pointer is not formed singly by molding or pressing, it becomes possible to form the pointer easily and inexpensively, and when automating the manufacturing of the pointer, it becomes a pointer suitable for that. Furthermore, it has the effect of making it easier to respond to changes in the weight of the balance weight of the pointer.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the first embodiment of the present invention, FIG. 2 is a partial sectional view of the assembled state, FIG. 3 is a partial sectional view of the second embodiment of the present invention, and FIG. 4 is a partial sectional view of the second embodiment of the present invention. FIG. 5 is an exploded perspective view of the fourth embodiment of the invention, and FIG. 6 is a partial sectional view of the fourth embodiment of the invention when assembled. 1, 11, 21, 31...guideline, 2, 12, 2
2, 32... Indication part, 3, 13, 33... Pointer base, 7, 15, 23, 35... Balance weight arrangement part, 8, 16, 25, 36... Balance weight material, 14... Pointer Cap.

Claims (1)

[Claims] 1. In instruments in which a balance weight is provided for the pointer, a balance weight placement part is provided on the pointer or a member that is integrated with the pointer, and a predetermined amount of non-solid balance weight is attached to this balance weight placement part. An instrument pointer characterized in that a material is positioned and the balance weight material becomes solid and acts as a balance weight.