JPH04182U

JPH04182U -

Info

Publication number: JPH04182U
Application number: JP1990037362U
Authority: JP
Priority date: 1990-04-09
Filing date: 1990-04-09
Publication date: 1992-01-06

Description

[Brief explanation of the drawing]

第１図乃至第６図はこの考案に係る超音波リニ
アモータの実施例を示し、第１図は本考案の直線
帯状振動体を示す平面図、第２図は同直線帯状振
動体を示す側面図、第３図は同直線帯状振動体を
示す正面図、第４図は同直線帯状振動体の支持部
を示す正面図、第５図及び第６図は同実施例の作
用を示す部分正面図である。主な符号の説明、１……直線帯状弾性体、１ａ
，１ｂ，１ｃ，１ｄ……突起部、２……導電性接
着剤、３ａ，３ｂ，３ｃ，３ｄ……圧電振動子、
４……導電線材、５……移動体、６ａ，６ｂ，６
ｃ，６ｄ……ねじ穴、７，８……超音波電気信号
源。 1 to 6 show an embodiment of the ultrasonic linear motor according to the invention, FIG. 1 is a plan view showing the linear band-shaped vibrating body of the invention, and FIG. 2 is a side view showing the linear band-shaped vibrating body. Fig. 3 is a front view showing the linear band-shaped vibrating body, Fig. 4 is a front view showing the support part of the linear band-shaped vibrating body, and Figs. 5 and 6 are partial front views showing the operation of the same embodiment. It is a diagram. Explanation of main symbols, 1... Straight band-shaped elastic body, 1a
, 1b, 1c, 1d... protrusion, 2... conductive adhesive, 3a, 3b, 3c, 3d... piezoelectric vibrator,
4... Conductive wire material, 5... Moving body, 6a, 6b, 6
c, 6d... screw hole, 7, 8... ultrasonic electric signal source.

Claims

[Claims for Utility Model Registration] 1. A linear band-shaped elastic body is obtained by applying an ultrasonic electrical signal to the piezoelectric vibrator of a linear band-shaped vibrating body obtained by joining a plurality of piezoelectric vibrators at equal intervals to a linear band-shaped elastic body. In an ultrasonic linear motor that vibrates and presses a movable body against a plurality of protrusions provided on this linear band-shaped elastic body and moves the movable body by frictional force, the piezoelectric vibrators are divided into two sets with the same polarity, and each Ultrasonic electric signals having a phase difference of π/2 are applied to the piezoelectric vibrators of the set, and a standing wave having a phase difference of π/2 is generated in the linear band-shaped elastic body.
An ultrasonic linear motor characterized in that by changing the sign of the phase difference between two ultrasonic electric signals, the traveling direction of a traveling wave generated by combining standing waves is changed, thereby switching the traveling direction of a moving body. 2. The projections and the piezoelectric vibrator are in one-to-one correspondence, and the projections are arranged in the same direction from the end of the piezoelectric vibrator at 1/40th the length of the piezoelectric vibrator. The ultrasonic linear motor according to claim 1. 3. Claim 1, characterized in that the positions of the nearest nodes from both ends of the linear band-shaped elastic body are supported by supports.
Or the ultrasonic linear motor described in 2.