JPS5813608Y2 - Onsashindoushi - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tuning fork vibrator used in piezoelectrically driven tuning forks, electromagnetic, driven tuning forks, and the like.

Conventionally, this type of tuning fork vibrator is attached to a substrate 3 by a support rod 2 integrally formed at the base of the tuning fork vibrator 1, as shown in FIG. It was installed so that the tuning fork vibrator 1 was housed therein.

However, according to this, the vibration energy of tuning fork vibrator 1 is
Since it is transmitted from the support rod 2 to the substrate 3 and to the case 4 with an open end, it resonates with the case 4 with an open end.
There was a drawback that spurious vibrations as shown in the third fixed station C were excited.

Furthermore, this limits the usable frequency range and makes it impossible to increase the number of channels.

The present invention eliminates these conventional drawbacks, and
With the letter-shaped support upright, one end of it is fixed to the substrate for mounting a tuning fork vibrator, and the support is positioned within an area surrounded by the vibrating piece and the base of the tuning fork vibrator. The other end is fixed or integrated with the inner surface or edge of the base of the tuning fork vibrator.

The present invention provides a tuning fork vibrator that is small and suppresses spurious vibrations.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 10 denotes a tuning fork vibrator having a piezoelectric element (not shown) attached to its node.
is joined to a U-shaped support 30 by welding or the like at its base.

In this case, the U-shaped support 30 is attached to a substrate 40 and serves as a ground terminal.

Reference numerals 50 and 60 indicate input/output terminals attached to a part of the board 40, respectively, to which the input/output lead wires of the tuning fork vibrator 100 are connected.

Reference numeral 70 denotes a case with one end open, which is attached to the substrate 40 so that the tuning fork vibrator 10 is housed therein.

In other words, in the present invention constructed as described above, the vibration energy of the one-tuning fork vibrator 10 is absorbed by the U-shaped support 30, and spurious vibrations are suppressed as shown in FIG. 3B.

Furthermore, both vibrating elements vibrate in one direction with the base of the tuning fork vibrator 10 as the center of rotation at a frequency that is half the fundamental resonant frequency, resulting in spurious noise (so-called 1/2 f).
o Sufu.

Rias), it's hard to happen with this invention.

This is because the U-shaped support 30 must be twisted in order to generate such vibrations, but its structure makes it difficult to twist.

Note that this invention is not limited to the embodiments described above, and the position and means for joining the support body 30 to the inside of the base of the tuning fork vibrator 100 are not particularly limited.

For example, as shown in FIG. 4, a U-shaped support 30 may be joined to a projecting piece 90 protruding from the tuning fork vibrator 10.

Furthermore, as shown in FIG. In this state, one end of the support body is fixed to the tuning fork vibrator mounting board, the support body is positioned within the area surrounded by the vibrating piece and the base of the tuning fork vibrator, and the other end of the support body is fixed to the tuning fork vibrator mounting board. 1l inside the base
Since it is fixed or integrated on the lu surface or the edge, it is small, spurious vibrations are suppressed, a wide frequency band can be used, and a large number of channels can be provided.

In addition, since the structure is simple, it is easy to mass produce and can be manufactured at low cost, making it a very practical idea.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing a conventional example of the present invention, Fig. 2 is a side sectional view showing an embodiment of the present invention, Fig. 3 is an attenuation-frequency characteristic diagram, Figs. The diagram is. FIG. 3 is a side sectional view showing another embodiment of the present invention. 10... Tuning fork vibrator, 30... U-shaped support. 40... Mounted on the board, 50, 60...
- Input/output lead wire, 70...Case with one end open 90...Protruding piece.

Claims (1)

[Scope of utility model registration request] With the U-shaped support upright, one end thereof is fixed to the substrate for mounting the tuning fork vibrator, and the support is positioned within an area surrounded by the vibrating piece and the base of the tuning fork vibrator. A tuning fork vibrator characterized in that the other end is fixed or integrated with the inner surface or edge of the base of the tuning fork vibrator.