JPS6053822A - Vibration detecting apparatus - Google Patents

Abstract

PURPOSE:To make it possible to provide the light axis of a photoelectric device in perpendicular to the vibrating direction readily, by providing amplitude measuring scale lines and wedge-type amplitude measuring scales comprising two after-image forming lines on the casing surface of a vibration detecting apparatus. CONSTITUTION:On the surface of a casing 13 of an amplitude detecting device 11 enclosing a photoelectric device 1, a plurality of amplitude measuring scale lines 37, which are in parallel with the vibrating direction, and wedge-type amplitude measuring lines comprising two after-image forming lines 38 and 39, which are extended at an opening angle alpha with respect to a central line C, are provided. The detecting device is attached to a vibration feeder so that the light axis of the photoelectric device becomes correctly perpendicular to the vibrating direction. Then bands 40 and 41 having a light black color are yielded by the after-image forming lines 38 and 39. A triangle region 42 having a deep black color is formed at the overlapped part. When the light axis is not perpendicular, the after image is blurred. Therefore the light axis of the photoelectric device can be readily provided in perpendicular to the vibrating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration detection device, and particularly to a device for electrically detecting amplitude.

(1) This type of device consists of a casing and a vibration detection device built into the casing and supported so that it can vibrate in a predetermined direction relative to the casing, and fixes the casing to a vibrating object to be detected. There is a vibration detection device that detects the vibration of the vibrating object to be detected by detecting the relative vibration of the vibration detection Nlf obtained by the casing. In order to detect VC, it is necessary to fix the casing to the vibrating object to be detected so that the direction of vibration of the vibration detecting member matches the direction of vibration of the vibrating object to be detected.

An object of the present invention is to provide a vibration detection device that can easily meet the above demands. According to the present invention, this object comprises a casing and a vibration detecting member built in the casing and supported so as to be able to vibrate in a predetermined direction relative to the casing, and fixing the casing to a vibrating object to be detected. Detecting the relative vibration of the vibration detecting member with respect to the casing obtained by (2) In the vibration detecting device that detects all vibrations of the vibrating object to be detected, the vibration is applied to the outer surface of the casing. Wedge-type shaking machine consisting of a plurality of amplitude measurement scale lines parallel to the vibration direction of the detection member, and two afterimage formation lines having a predetermined crossing angle with the center line being a line perpendicular to the amplitude measurement scale lines. A vibration detection device characterized by displaying a measurement scale;
achieved by.

The details of the present invention will be explained below based on the illustrated embodiments.

First, a photoelectric device applied to a first embodiment of the present invention will be described. FIG. 1 is an enlarged perspective view of a photoelectric device (1) commercially available under trade names such as "photomicrosensor" and "photointerrupter." and a second support part (3) are arranged at a predetermined interval and each has a phototransistor (4) and a light emitting diode (5) mounted thereon. The first support part (2) and the second support part (3) are integrally formed on the substrate (6), and the electrode bins (7), (8) and (9) (
10 protrudes downward.

The photoelectric device (1) configured as described above has a length of about 40 mm.
mm % Height is approximately 3 including pin (7) ~01
Although it is extremely small with a diameter of approximately 10 mm in 0 mm, the light emitted from the light emitting diode (5) to the photo transistor (4) is normally blocked by a light shield that goes in and out between the photo transistor (4) and the light emitting diode (5). It is used to obtain 1H of "l#, 11031" from the phototransistor (4) by blocking or passing infrared rays.

Figure 2 is a graph showing a typical example of the detection position Iu characteristics of such a photoelectric device (11).As is clear from this graph, there is an intermediate region between the "1#" state and the "0" state. This means that the distance between the optical axis and the tip of the light shield a is approximately ±
It exists in a range of 1.5 mm, but changes linearly. Especially in the vicinity of the optical axis, the linearity is remarkable. The existence of such an intermediate region is thought to be due to the fact that the light emitting diode (5) is not strictly a point light source but has a certain size, and also because of the diffraction phenomenon of light at the tip of the light shield a. In this embodiment, such a distance is considered to be temporary. That is, the trough of an electromagnetically driven vibratory feeder typically has a maximum swing width of approximately I mm (thus a stroke of approximately 2 mm).
mm), so extremely good linearity can be used to detect the oscillation width of this type of feeder.

FIG. 3 is an enlarged view of the entire swing width detection device 0υ according to the first embodiment of the present invention.
There is a wedge-type amplitude measuring scale α according to the present invention on the front part of the
a is displayed. Further, cables O and l1il are led out from the casing.

As shown in Figures 4 to 6, the above-mentioned photoelectric device (1) is built into the casing α field.However, the electrode pins (7) to 00 are cut short and placed on the printed circuit board. The light shielding member αη is, for example, 5US3040.
It is made of stainless steel spring steel such as No. 8, and has a cross-shaped shape. When the casing (to) is fixed to the support plate (6), one arm portion (17a) is attached to the photoelectric device ( 1)
The phototransistor is located between the first support part (2) and the second support part (3), and the tip of the arm part (17a) is supported by the first support part (5) and the second support part (2). (4) and a light emitting diode (
5) so that it is on the optical axis connecting the other arm part (1
7b) is fixed to the inner wall of the casing 03.

Further, an IC for signal amplification is fixed on the printed circuit board QI. Although a wiring pattern is not shown on the printed circuit board 00, as shown in FIG. 8, ICaa is electrically connected to a phototransistor (4) and a light emitting diode (5). The ICQJC is connected to a power supply conductor (2 gloss), an output signal conductor (261), and a ground conductor (271), and these can be connected to various external control circuits with a cable (G), even though they are not shown in the figure. It will be destroyed.

As shown in Fig. 6, a U-shaped notch QQI is formed in one end wall of the casing (2), and
It is led out through the box. In addition, a pair of protrusions (E) (21J) are formed on both end walls H1i of the casing (to), and correspondingly, a pair of slits [6m] are formed at both ends of the support plate (2). There is. Projection (E) (
The casing 03 is fixed to the support plate Q (6) by fitting it into the slot (211) 6 (11611) and bending it as shown in FIG. A mounting hole (12
a) (12b) is formed.

Width measurement scale αΦ displayed on the front part of casing 03
The details are shown in FIG. 10A7, and although it is also called a "width nameplate" and is well known in itself, it will be briefly explained below.

In FIG. 10A, a plurality of scale lines 0η are displayed at equal intervals perpendicular to the center line C. In addition, two afterimage formation lines (to) (31) extending from point 0 at an opening angle α are displayed.Such amplitude measurement scale α4)'Ir As shown in Figure 10B, the direction b, that is, the scale line (When vibrating in the direction of the three forces, the afterimage formation line C3a FIC is displayed in black).A relatively dark black band (41 (41)) with a width proportional to the vibration width is formed.These bands (41 (41) The overlapped part forms a relatively dark black triangular area (44).The length of this triangular area (44) is proportional to the amplitude, and is the width of this area.The amplification rate is the afterimage formation line. [It is determined by the opening angle α between 1 and the scale line (to) is graduated corresponding to the amplification rate. In this example, one scale is 0.1 ynm.

The center line C of the amplitude measurement scale α→ configured as described above is parallel to the optical axis of the photoelectric device (1), that is, the straight line connecting the phototransistor (4) and the light emitting diode (5). The photoelectric device [IJ is fixed on the printed circuit board OQ, and the intermediate part (17c) of the light shielding member (11f)
) is parallel to the optical axis of the photoelectric device f(1) or the center line C of the amplitude measurement scale αΦ.
17b) is fixed to the casing 03.

If the entire light shielding member (171 is made of spring steel and the amplitude detection device f01 as shown in FIG. 7) of this embodiment is vibrated in the direction a, vibrations will occur as shown by the solid line, one-dot chain line, and two-dot chain line. However, it is assumed that the natural frequency fo of this vibration system is sufficiently smaller than the frequency f of the vibrating object to be detected. natural frequency fo
is determined by the length Zs+lis thickness of the intermediate portion (17) of the light shielding member η, the material, the mass of the first arm portion (17a), etc.

The first embodiment of the present invention is constructed as described above, and its operation will be explained below.

First, before explaining the entire operation, an electromagnet-driven vibrating feeder (2&) as a vibrating object to be detected to which the present amplitude detecting device 0η is attached will be explained with reference to FIG.

In Fig. 9, a pair of vane plates are integrally fixed to the bottom of the trough (21), and the electromagnet driving part Oυ and the coupling part ((
4). The trough (c) is supported by the support (3
The electromagnet drive unit c3 is supported on the paddle via a spring.
1) is supported on the support base 01 via a spring c3i. As is well known, the electromagnet drive unit 01) consists of an electromagnet, a plate, etc., and the coil of the electromagnet is connected to a commercial power source (for example, 50 Hz).
When the voltage is half-wave rectified and energized, the trough head vibrates in the direction of arrow a at 50 Hz.

The amplitude detecting device aη of this embodiment is mounted on the blade plate (7) of the vibration feeder as described above. In this case, the optical axis of the photoelectric device (1) in the amplitude detection device CIη is
, in other words, it is necessary to attach the supporting plate (b) of the swing width detection device c1 to the blade plate (7) so as to be perpendicular to the vibration direction a of the trough (21). Vertical setting can be easily performed by using the swing width measuring scale α→ displayed on the front part of the casing. Insert the port l- into the holes (x2a) (12b) and insert the wing plate (to)
) may be installed by screwing into the screw hole formed in the support plate (b), as shown in Figure 5.
A permanent magnet m may be fixed to the back side of the permanent magnet m, and the amplitude detection device 0v may be attached to the vane plate (7) made of an iron phase by this magnetic force.

Drive the feeder and shake [1] Measuring scale α4) is the first
In the state shown in Figure 0B, the amplitude detection device Qυ is correctly set vertically, but in the state shown in Figure 10C, the optical axis of the photoelectric device (1) is in the trough. (Not perpendicular to the vibration direction a of 2gl.

In other words, if each scale line (3η of the oscillation width measurement scale Q4) is not parallel to the vibration direction a of the trough (21), the scale line (3) will appear thick due to an afterimage, and the IJ C81C31o afterimage band (41'
(41)'+7) 31 Null area (43 is an irregularly shaped triangle with shading. Therefore, when the amplitude measurement scale a< exhibits a state as shown in Fig. 10C, the amplitude detection device o'U' (r Adjust the mounting position so that it is in the state shown in Figure 10B by rotating it slightly clockwise or counterclockwise. In this case, it is easy to adjust when it is mounted due to the magnetic force of the permanent magnet m. However, even if the permanent magnet m is not used and it is attached with bolts, the direction of non-verticality can be read on the amplitude measurement scale (14), so the attachment is within the range of the holes (12a) (12b). Adjusting vertically is not that difficult.

Now, the operation of the present swing width detection device 0υ will be theoretically explained with reference to FIG.

In other words, Fig. 11 shows a principle diagram of the vibration system in the amplitude detection device C1υ, which represents a so-called "forced vibration system due to displacement", and the support A is attached to the casing (G) with a spring constant. is the repulsion constant of the intermediate part (17c) of the light shielding member ◇η, C is the internal friction and air resistance of the material of the intermediate part (17C), and m is the first arm ff1l (17
It can be made to correspond to the mass of a).

If the displacement fx of the mass m from the equilibrium position when the support body A vibrates at )(, -3 cos ωt), the equation of motion is as follows.

mx+c(x-x,)+k(x-xL)==0 When this equation is solved, x = xocos (ωt-α-a).

Here, tan a −cω/ (k−mω”), tan a
=-cω/k or more is when viewed from the stationary coordinates,
The equation of motion when viewed from support A is Xr=X−Xl
As, m'ir + cxr + kxr = y(';, ω"
aisωt. Solving this gives xr=xoωS (ω is one δ) tanδ: Cω/ (k −77Lω').

In dimensionless representation, xo / a - λ1 // vote level, tan δ - 2 γ
λ/(1-1”), λ=ω/ω01ωo = 7shi; r=C/Cc=
2L-cho.

In the above, XO/a represents the relative displacement amplitude ratio between the mass m and the support a, but as is clear from the above equation, when λ is sufficiently larger than 1, in other words, the vibration system of FIG. When the natural circular frequency ω0 is sufficiently smaller than the circular frequency ω of the support A, it becomes 1 in xo/a. In other words,
The amplitude of the mass m is equal to the amplitude of the support A.

As is clear from the above explanation, if the amplitude detection device Qυ is attached to the blade plate (30) of the vibrating feeder (to) as described above, the first arm part (17a) of the light shielding member (1?) As shown in Figure 7, it vibrates with the same amplitude as the blade OQ of the vibrator. Since the photoelectric device (1) has all the characteristics shown in Figure 2, a current proportional to the amplitude of the first arm (17a) is obtained from the phototransistor (4), and this is increased by the IC (to). It is then supplied to an external control circuit. This control circuit drives the drive unit 61 of the vibration feeder example.
) is controlled, and the amplitude of the trough is automatically controlled to a predetermined value. That is, this embodiment is applied to constant vibration width control of a vibration feeder.

Next, before explaining the second embodiment of the present invention, m12
The principle of the amplitude detection device of this embodiment will be explained with reference to the drawings.

(13) In FIG. 12, the first light shielding plate 61) and the second light shielding plate are disposed facing each other, but are shown side by side in a plane for easy understanding. n pairs of light emitting element board and light receiving element 6 are arranged in parallel with both light shielding plates (51) 52Th interposed therebetween. A large number of slits 551 are formed on the first light shielding plate 6υ at a predetermined pitch P, and n slits (7) are formed on the second light shielding plate 62 at a predetermined pitch S. The optical axis t connecting each light emitting element and the light receiving element 54 passes through each slit (g) of the second light shielding plate (53). There is the following relational expression between the predetermined pitches S and P. .

5=Np±-(N: integer)・・・・・・・・・・・・
...(1) Now, when the first light shielding plate 5D is vibrated in the direction of the arrow a at the frequency f and the amplitude A1 and therefore the stroke by two people, n
Each of the light receiving elements 5a sequentially receives light from the light emitting element (T), and the number NA of any one of the light receiving elements 5a receiving light during a certain period of time T can be expressed as follows.

f 2A, n = −X f'l' ・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・(2)(14) From the above formula, the number of times NA1 of light reception by any one of the light receiving elements (54), that is, the number of pulses NA obtained from the light receiving element 6a is the stroke It can be seen that it is proportional to 2A.

According to this embodiment, the amplitude of the vibrating body is detected by counting the above-mentioned pulse number NA' for a certain period of time T. Also, if the frequency f is constant, any of the light receiving elements 54)
The amplitude may be detected from the pulse interval since it is inversely proportional to the stroke.

Furthermore, from the above equation (2), it can be seen that if the pitch P is made smaller and n is made larger, the sensitivity of amplitude detection increases. In reality, there is a manufacturing limit to reducing the pitch Pk, so the sensitivity can be increased by increasing n.

The swinging width detection device (71) of the second embodiment includes all the swinging width detection sections based on the above-described principle, and the overall appearance is the same as that shown in FIG. 3. Note that parts corresponding to those in the first embodiment are given the same reference numerals.

That is, as shown in FIGS. 13 to 15, a vibration 11J detection section (91) is built into the casing (one casing).

Shaking width detection ff1j (91) i, l: 141 support 1f
ll (!13, m2 support capital (931, 1st support department (9
It consists of a fixed light shielding member (9) and a vibration light shielding member fixed to the first support part (94), and the first support part (94 supports three light receiving elements (one station), and a 3
The light emitting elements ((g)) are supported by the second support part (93). It also supports the lead wires to be connected and is fixed on the printed circuit board (7Q).The vibration light shielding member aη is made of stainless steel spring steel such as 80S304C8, and has a vertices shape. When the casing (13) is fixed to the support plate a, one arm part (77a) is located between the first support part (9) and the second support part (1) 1, and this arm part (77
a) is a light-receiving element, such as a phototransistor (a) supported by the first support part (!13), and a second support part (!13).
A light emitting element, for example a light emitting diode (9
The other arm portion (77b) is fixed to the inner wall of the casing θ] so as to be perpendicular to the optical axis connecting the casing θ. Printed circuit board (7 (e) has I for signal amplification)
The printed circuit board (IC+78, although the wiring pattern is not shown in the figure) is electrically connected to the phototransistor (961) and the light emitting diode (951). A conducting wire, an output signal conducting wire, and a grounding conducting wire are connected, and these are guided to various external control circuits through a cable OQ even if not shown all together.

As shown in FIG. 15, the arm part (77a) of the vibration light shielding member ση is formed with a large number of sulins (115) at a predetermined pitch P, and is a fixed light shielding member fixed to the first support part (!12). In (94), light receiving elements (three (n=3) sulin facing each tooth) (116) are formed at a predetermined pitch S.

This embodiment also operates on the same operating principle as the first embodiment, and has the same vibration direction and first arm as the vibration feeder. It can be easily set to match the vibration direction of l1 (77a). That is, the first arm portion (7?) of the vibration light shielding member (7?)
7a) is the blade plate of the top of the vibrating feeder (
It vibrates with the same amplitude as 7).

Therefore, from the phototransistor (OA) for a certain period of time T(1
7) A number of pulses proportional to the amplitude are obtained within the vibration feeder (II), and these are counted by various external control circuits connected by the cable (II). Alternatively, the intervals between these pulses are measured. The swing width can be detected.

FIG. 17 shows the amplitude detection device (1) according to the m3 embodiment of the present invention.
80), but in this example, a slit-shaped opening (182,) (18
3) is formed, one opening (182) K has the first printed circuit board (184) inserted in a loosely fitted state, and the other opening (183) K has the second printed circuit board (186) inserted in the same way. It is inserted loosely into the Casing (1,81)
Inside, the first printed circuit board (IS4) has three light receiving elements (
185) is attached, and the second printed circuit board (186)
Three light emitting elements (, 189) are attached to face each of these light receiving elements (185). The printed circuit boards (184) (, 186) are connected to the control box (194) outside the casing (181). Control box (194)
It includes all amplifiers, counters, control circuits, etc., and is supported on the ground (192) by a support system (1'lQ). The support device (190) consists of a support column (18) (1, 191) and a support shaft (193) attached to the tip thereof, and the control box (194) consists of a support shaft (193).
), that is, in the direction of arrow e, and is fixed at a desired position. Further, a cable (, 195) is led out from the control box (194) and connected to a feeder drive circuit (not shown).

A first light shielding member (187) is fixed inside the casing (181), and a large number of slits similar to those in the second embodiment are formed at a predetermined pitch P in this.

Also, inside the casing (181), the second printed circuit board (18
A second light shielding member (188) is fixed to 6), and three slits are formed at a predetermined pitch S as in the second embodiment. These three slits face the light emitting element (, 189). Also, the casing (18
1) A width measurement scale α fathom as shown in FIG. 10A is formed on the outer wall surface.

The casing (181) is attached to the blade plate (30) of the vibratory feeder as in the first embodiment. In this example, the casing (
181) It is necessary to attach it to the k wing plate (7), and for this purpose, the swing 1j measurement scale θ4) displayed on the outer wall surface of the casing (181) is used. That is, the control box (19
4) Adjust the rotation of the entire casing (18) around the spindle (-193). Although it is static 111, the printed circuit board (1, 84) (186) and casing (18
1,) so that the openings (182 and 183) do not interfere with each other.
] The width shall be sufficiently large. On the other hand, the casing (
181) and the printed circuit boards (184) and (186) as shown in the figure.

Pulses from the light receiving element (185) are counted within the control box (194) for a predetermined time T, and an output corresponding to this count value is supplied to the feeder drive control circuit via the cable (195)e. This control circuit controls the vibration feeder (
The amount of current applied to the electromagnetic coil in the drive unit (31) of 281 is controlled, and the swing width of the trough is automatically controlled to a predetermined value. That is, this embodiment is also applied to constant vibration width control of a vibrating feeder like the above embodiments.

Although FIG. 18 shows a swing width detection device (river) according to a fourth embodiment of the present invention, parts corresponding to FIG. 17 of the third embodiment are given the same reference numerals.

That is, in this embodiment, the control box (194) of the third embodiment
A control casing (196) containing the same components is attached to the frame of the feeder drive part t31).

An output cable (1) is connected to the control casing (196).
97) derived it. A width measurement scale (b) is also displayed on the outer wall surface of the casing (196). In the case of this embodiment, since the drive unit r31) also vibrates in the direction of the arrow f (same as the vibration direction of the blade (to)), the detected amplitude is the relative vibration between the blade (to) and the drive Tf11c111. Regarding the width, the weight of the drive section 6υ is generally very large compared to the weight of the trough side, and each swing width is inversely proportional to the weight, so the swing width of the drive section (31J is very small and can be ignored. There are many cases.

In the case of this embodiment as well, by using the amplitude measuring scale α41, it is possible to easily attach the optical axis to the vibrating body so that it extends perpendicularly to the vibration direction. Since the vibration directions a1 (21) and f are parallel, the two casings (181) (1
96) may be adjusted and installed at the same time.

Although the embodiments of the present invention have been described above, the present invention is of course not limited thereto, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiments, a spring wire plate spring is shown, but a coil spring may be used instead. In this case, for example, a coil spring may be attached to the side wall of the casing OI located near the gap between the supporting parts (2) and (3).

Further, although an electromagnet-driven vibrating feeder has been described as the vibrating body to be detected, the present invention is of course not limited to this.

Furthermore, the vibration amplitude detection unit built into the casing is not limited to the above embodiment, and may include a vibration detection member that is supported so as to be able to vibrate in a predetermined direction relative to the casing. Any vibration detecting unit may detect the vibration of the object to be detected by detecting all of the relative vibration of the vibration detecting member to the casing obtained by fixing the vibration detecting member to the casing (22). The present invention is also applicable to

As described above, the vibration detection device of the present invention can be easily set so that the vibration direction of the vibration detection member coincides with the vibration direction of the vibrating object to be detected.

Further, the amplitude-output can be calibrated using the amplitude scale plate.

[Brief explanation of the drawing]

FIG. 1 is an enlarged perspective view of a photoelectric device applied to the first embodiment of the present invention, FIG. 2 is a graph showing the characteristics of the device, and FIG.
The figures are an enlarged perspective view of the swing width detection device according to the first embodiment of the present invention, FIG. 4 is a partially cutaway plan view of the same device, FIG. 5 is a sectional view taken along the line ■-v in FIG. 4, and FIG. Fig. 7 is a partially exploded perspective view of the device, Fig. 7 is a partially enlarged plan view of the main parts of the device to explain the operation of the device, Fig. 8 is a circuit diagram of the device, and Fig. 9 is an electromagnet with the device attached. A side view of the drive-type vibration feeder, FIG. 10A is an enlarged plan view showing details of the amplitude measurement scale in FIG. 3, and FIGS. 10B and 110C.
The figure is an enlarged plan view to show the function of the same scale, FIG. 11 is a principle diagram to explain the operating principle of the first embodiment, and FIG.
The figure shows the principle of the amplitude detection device according to the second embodiment of the present invention. f:
To clarify, Fig. 13 is a partially cutaway plan view of the same device, Fig. 14 is a view of the device in the direction of XIv-XIV in Fig. 13, and Fig. 15 is an exploded view of the same device. Perspective view, 1st. (17
The figure is a partial cross-sectional side view of a vibration width detection apparatus according to the third embodiment of the present invention, and FIG. In the figure, (])・・・・・・・・・・・・・・・Photoelectric device (4)・・・・・・・・・・・・・・・・・・・・・
Phototransistor (5)・・・・・・・・・・・・
......Light-emitting diode (1 house...)
......... Shake 11] Detection device 1th'
:(If9・・・・・・・・・・・・・・・・・・
・ Support version (c) (18], )・・・・・・・・・
Casing 0→・・・・・・・・・・・・・・・・・・
・・・Graduation width Ii＋＋＋ Fixed scale 07) ・・・・・・・・・
......... Light shielding member (,17a)...
・・・・・・・・・・・・ 1st Arm Capital (17c)
・・・・・・・・・・・・・・・ Middle part ・・・
・・・・・・・・・・・・・・・・・・ Electromagnet-driven vibration feeder D ・・・・・・・・・・・・・・・
...... Between the swing width measurement scale lines (31...
...... Afterimage formation line (77) (187)
...... Vibration light shielding member (185)...
・・・・・・・・・・・・Light emitting element (189)...
......... Light receiving element (,115) (11
6) ...Slit (,145)...
・・・・・・・・・・・・Light emitting element (146)...
・・・・・・・・・・Engraving of Yasuo Iisaka's drawing of the photodetector agent (no changes in content) JP-A-Sho GO-53822 (8) Fig. 3 72a 7″ 2 ＼ 13 1 No. et al. 2 Figure 7 II !□: Keito... ri+ 't+ sa!〉J - Procedural amendment to Konkai Determination November 9, 1980 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1 Indication of matter 1! 1982 Patent Application No. 162194 2, Title of Invention: Vibration Detection Device 3, Relationship with Amendment Case: Patent Applicant 4, Agent

Claims (1)

[Claims] Consisting of a casing and a vibration detection member built into the casing and supported so as to be able to vibrate in a predetermined direction relative to the casing, detecting vibrations obtained by fixing the casing to a vibrating object to be detected. In the vibration detection device, the outer surface of the casing has a plurality of amplitude measurement scale lines parallel to the vibration direction of the vibration detection member, and a predetermined line with a center line perpendicular to the amplitude measurement scale lines. A vibration detection device characterized by displaying a wedge-type amplitude measurement scale consisting of two afterimage forming lines having an intersection angle of .