JPH07270847A - Mounting device for shake detecting means - Google Patents

Abstract

PURPOSE:To miniaturize a device and to remove mechanical vibration harmful to shake detecting sensors by interposing an elastic sheet between plural shake detecting sensors respectively held in a sensor case and a housing. CONSTITUTION:The shake detecting sensors 37p and 37y are housed in the sensor housing parts 54a and 54b of the sensor case 54 with the elastic sheets 55p and 55y made of urethane form in between, and fixed to be prevented from coming off with pawls 54c and 54d. Cylindrical rubber legs 46 are mounted in the holes 54e to 54g of the sensor case 54 housing the sensors 37p and 37y, and fixed to the projections 51b of a fixed barrel 51 with screws 57. Meanwhile, the sensors 37p and 37y are connected to a sensor base board 58 consisting of a flexible printed board, and the sensor base board 58 is connected to a lens base board 40 through a connector 59 on the lens base board 40. Thus, the device is miniaturized and the cost thereof is reduced, then the mechanical vibration harmful to the plural sensors 37p and 37y is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an improvement of an anti-vibration device provided with a plurality of anti-vibration devices for detecting anti-vibration in a housing, a vibration detection device mounting device arranged in a camera with anti-vibration function, etc. It is about.

[0002]

2. Description of the Related Art Conventionally, various devices for correcting image blur of a camera caused by camera shake have been proposed. A typical one of these image shake correction methods is a shake correction optical member in a photographing optical system that detects rotational shakes in a vertical direction and a horizontal direction generated in a camera by two shake detection means, and based on the shake signals. Is displaced in two directions to eliminate image blur. The shake detecting means for detecting camera shake include an angular displacement meter, an angular velocity meter, and an angular accelerometer. These shake detecting means are harmful vibrations other than camera shake, such as a quick return mirror of a single-lens reflex camera, There is a drawback that an erroneous signal other than the normal camera shake signal is output due to the impact of the operation of the shutter, the diaphragm mechanism, or the like, or the vibration of the video camera running the motor.

The propagation paths of the harmful vibrations are as follows: a) Vibrations propagating through structural members such as a camera or a lens housing from the vibration source to the shake detection means (hereinafter referred to as mechanical vibrations).

B) Vibration propagating in the air from the vibration source to the shake detection means (hereinafter referred to as acoustic vibration). There are two types. In general, low-frequency vibrations tend to propagate mainly as mechanical vibrations in the above a), and high-frequency vibrations tend to propagate mainly as acoustic vibrations in the above b).

Therefore, an application for a mounting method for removing these harmful vibrations has already been filed.

For example, as a measure to prevent propagation of mechanical vibration, 1) In JP-A-60-185110, a so-called vibration gyro case using a tuning fork is sandwiched via an elastic member to prevent propagation of harmful vibration.

2) In Japanese Unexamined Patent Publication No. 2-163612, a vibration gyro is attached via a diaphragm, the attachment rigidity around the shake detection sensitivity axis is not lowered, and the attachment rigidity in other directions is weakened to propagate harmful vibrations. Prevent.

3) In Japanese Utility Model Laid-Open No. 1-61662, an angular velocity meter is supported by a wire and a pulley so that the angular velocity meter does not rotate around the shake detection sensitivity axis and can be displaced in other directions to prevent harmful vibration. Prevent propagation.

4) In Japanese Patent Application Laid-Open No. 2-170058, the angular accelerometer is attached using a plurality of rubber bushes. The rubber bushes have the maximum support rigidity around the shake detection sensitivity axis of the angular accelerometer. By arranging them, the harmful vibration or the shock when dropped is mitigated.

5) In Japanese Unexamined Patent Publication No. 2-268219, a notch is provided in the tuning fork mounting base of the vibration gyro so that it functions as a leaf spring to prevent harmful vibration from propagating.

6) In Japanese Patent Laid-Open No. 5-107623, a shake detection sensor such as a vibration gyro is attached through an elastic sheet or a flexible printed board. Etc. have been filed.

On the other hand, as an application relating to prevention of propagation of acoustic vibration, a vibration gyro that is particularly sensitive to acoustic vibration is described in 7) Japanese Patent Laid-Open Nos. 5-18755 and 5-11333.
In No. 1, the vibrator of the vibration gyro is surrounded by a sound absorbing material.
Has been filed.

[0013]

However, each of the above-mentioned conventional examples has the following problems.

In the above 1), since the mounting rigidity of the vibrating gyro in the angular velocity detecting direction is weak, the ability to detect high-frequency vibration may decrease.

In the above 2) to 4), the structure is complicated and expensive.

In the above 5), there is no directivity for preventing harmful vibrations, that is, as in the above 1), the rigidity in the direction of shake detection may be low.

Further, as described above, at least two shake detecting means are required for detecting the shake of the camera or the like, but in all the embodiments except the above 4), one shake detecting means should be attached. Therefore, when two shake detecting means are mounted, two sets of mounting devices of each embodiment are required, which is an obstacle to cost reduction and miniaturization of the camera.

On the other hand, in the above 4), the two shake detecting means are attached to the housing substantially as one unit, but the shape of the shake detecting means also changes when the structure is complicated or the shape of the housing changes. However, it has a problem of poor versatility.

On the other hand, in the above-mentioned conventional example 7), the sound absorbing effect is incomplete because the entire circumference of the vibrator cannot be surrounded by the beam member that supports the vibrator and cannot be surrounded.

(Object of the Invention) A first object of the present invention is to achieve shake detection capable of removing harmful mechanical vibrations to a plurality of shake detection means while achieving downsizing and cost reduction of the apparatus. It is to provide a mounting device for means.

A second object of the present invention is to provide a shake detecting means mounting device capable of simultaneously reducing harmful vibration and maintaining transmission of shake vibration while reducing the number of elastic members.

A third object of the present invention is to provide an attachment device for shake detecting means which can facilitate the attachment work of the elastic member.

A fourth object of the present invention is to provide a shake detecting means mounting device which does not require a new elastic member and can achieve a further cost reduction.

A fifth object of the present invention is to provide a mounting device for shake detecting means which can reduce the number of parts and achieve cost reduction.

A sixth object of the present invention is to provide a shake detecting means mounting device which does not require a new holding means and can achieve further cost reduction.

A seventh object of the present invention is to enable the use of a soft elastic member having an excellent ability to remove harmful vibrations, and
It is an object of the present invention to provide an attachment device for shake detection means that can maintain shake vibration detection capability.

An eighth object of the present invention is to provide a shake detecting means mounting device capable of effectively blocking harmful vibrations transmitted to a flexible printed circuit board by using a calculating means as a weight member. .

A ninth object of the present invention is to provide a shake detecting means mounting device capable of detecting even minute vibrations.

A tenth object of the present invention is to provide a shake detecting means mounting device capable of effectively blocking acoustic vibration while achieving downsizing and cost reduction of the device.

An eleventh object of the present invention is to provide a shake detecting means mounting device capable of preventing mutual interference between the shake detecting means.

A twelfth object of the present invention is to provide a shake detecting means mounting device which can use a vibrating gyro which easily causes mutual interference as shake detecting means.

A thirteenth object of the present invention is to provide a shake detecting means mounting device capable of forming the holding means and the sealing member at low cost and enhancing the acoustic vibration isolation capability.

A fourteenth object of the present invention is to provide a shake detecting means mounting device capable of enhancing the effect of removing acoustic vibrations and improving the cost and assembly workability.

A fifteenth object of the present invention is to provide an attachment device for shake detection means which can further enhance the effect of eliminating acoustic vibration.

A sixteenth object of the present invention is to provide a plurality of shake detecting means having a vibrating member such as a vibrating gyro, in which mutual interference of the plurality of shake detecting means generated via the flexible printed circuit board can be easily and easily performed. An object of the present invention is to provide an attachment device for shake detection means that can be effectively removed.

A seventeenth object of the present invention is to provide an attachment device for shake detecting means which can facilitate the work of restraining a flexible printed circuit board.

An eighteenth object of the present invention is to provide a mounting device for shake detecting means which can further enhance the mutual interference removing effect.

A nineteenth object of the present invention is to provide a shake detecting means mounting device which does not require a new holding means and can achieve further cost reduction.

A twentieth object of the present invention is to provide a mounting device for shake detecting means which can further enhance the mutual interference removing effect.

[0040]

In order to achieve the first object, the present invention according to claim 1 is fixed to a housing,
A plurality of holding means for accommodating a plurality of shake detecting means for detecting shake generated in the housing, and an elastic member interposed between the housing and the plurality of shake detecting means are respectively held by the holding means. An elastic member is interposed between the shake detecting means and the housing.

In order to achieve the above-mentioned second object, the present invention according to claim 2 is characterized in that an elastic member is arranged between the housing and the holding means, and a plurality of shake detecting means are provided with respect to the housing by the elastic member. Also, the holding means are collectively floated and supported.

In order to achieve the third object, the present invention according to claim 3 arranges an elastic member between the shake detecting means and the holding means.

In order to achieve the fourth object, the present invention of claim 4 uses a flexible printed circuit board as an elastic member.

In order to achieve the fifth object, the present invention according to claim 5 is such that a plurality of shake detecting means fixed to the housing and for detecting shake occurring in the housing are housed, and partly elastic. A holding unit having a portion and an elastic member interposed between the housing and the plurality of shake detecting units are provided, and the plurality of shake detecting units are held by the elastic holding unit.

In order to achieve the sixth object, according to the present invention of claim 6, the flexible printed board is used as a holding means for preventing harmful vibration transmission.

In order to achieve the above-mentioned seventh object, the present invention according to claim 7 provides a holding means having at least three mounting portions with respect to the housing, wherein the first and the second mounting portions among the mounting portions are provided. The line segment connecting the second mounting portion and the line segment connecting the second and third mounting portions are substantially orthogonal to each other, and each line segment is also with respect to each shake detection sensitivity axis of the plurality of shake detecting means. It is arranged to be substantially orthogonal.

In order to achieve the eighth object, the present invention according to claim 8 is to provide an arithmetic means for arithmetically processing output signals of a plurality of shake detecting means for detecting shake generated in the casing, and the calculating means. A flexible printed board on which a plurality of shake detecting means and a computing means are mounted, and a printed board having a connecting portion connected to the terminal portion of the flexible printed board, An arithmetic means is mounted as a weight member in the middle of the flexible printed circuit board where harmful vibrations are transmitted.

In order to achieve the ninth object, the present invention according to claim 9 uses a vibration gyro as a plurality of shake detecting means.

In order to achieve the tenth object, the present invention according to claim 10 is a holding means having a space fixed to a housing and having a plurality of shake detecting means for detecting shake generated in the housing. And a sealing member that substantially seals the space, and the plurality of shake detecting means are sealed by a set of structural members including a holding means and a sealing member.

In order to achieve the above eleventh object, the present invention according to claim 11 forms a plurality of spaces in the holding means for accommodating a plurality of shake detecting means independently.

In order to achieve the above twelfth object, the present invention according to claim 12 uses a vibration gyro as a plurality of shake detecting means.

In order to achieve the above thirteenth object, the present invention according to claim 13 provides a metal die-cast, a fiber reinforced plastic, an inorganic material-filled plastic, which has a high degree of freedom in shape and a large effect of eliminating acoustic vibration. Alternatively, the holding means and the sealing member are formed of any one of liquid crystal polymers.

In order to achieve the fourteenth object, the present invention of claim 14 is to arrange an elastic member between the holding means and the sealing member.

In order to achieve the fifteenth object, the present invention according to claim 15 uses a foamed sheet having a sound absorbing function as the elastic member.

In order to achieve the sixteenth object, the present invention according to the sixteenth or seventeenth aspect is for detecting a shake generated in a housing, and comprises a plurality of vibrating gyros having a vibrating member. Holding means for fixing the shake detecting means to the housing, and an intermediate portion of a plurality of connecting portions of the flexible printed circuit board connected to the plurality of shake detecting means and connected to the plurality of shake detecting means. It is intended to prevent mutual interference of the plurality of shake detecting means via the flexible printed circuit board.

In order to achieve the seventeenth object, the present invention according to claim 18 comprises a holding means for fixing the shake detecting means by the first and second holding members, and the first and second holding members. The flexible printed circuit board is sandwiched and constrained by the two holding members.

In order to achieve the eighteenth object, the present invention according to claim 19 uses a screw to fasten and restrain the flexible printed circuit board.

In order to achieve the nineteenth object, the present invention according to claim 20 uses the flexible printed circuit board also as the holding means.

In order to achieve the twentieth object, according to the present invention of claim 21, the flexible printed circuit board is fastened and restrained by using a screw.

[0060]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

FIG. 6 is a conceptual diagram of a camera equipped with the shake detecting means mounting device of the present invention.

In FIG. 6, 11 is a camera body,
It is placed on the camera CPU 12 that controls the operation of the entire camera, the operation switch group 13 that triggers the start of various camera operations, the camera-side mount contact 14 that exchanges signals with the lens, the quick return mirror 15, and the image plane. Film 16 and the like.

Reference numeral 31 denotes an interchangeable lens that can be attached to and detached from the camera body 11, and a lens that communicates with the lens groups 32, 33 and 34 and the camera CPU 12 to control the focusing drive of the lens 31 and the image blur correction operation. CPU
35, a lens-side mount contact 36, a shake detection sensor 37 such as a vibration gyro that is sensitive to minute vibrations, a focusing actuator 38 that advances and retracts the lens group 32 in the optical axis direction, and a control element such as a lens CPU 35. A lens substrate 40 on which the lens is mounted, and a lens CPU 35 that controls the lens 33 in a two-dimensional direction in a plane perpendicular to the optical axis based on a camera shake signal detected by the camera shake detection sensor 37. An image blur correction actuator 39 for suppressing the image blur on the image plane is provided.

FIG. 1 is an exploded perspective view showing the essential structure of a camera equipped with a shake detecting means mounting device according to the first embodiment of the present invention, and is a view of the interchangeable lens 31 of FIG. 6 as seen from the mount side. Is.

Fixed cylinder 5 forming the base of the interchangeable lens 31
The mount 52 sandwiches the lens substrate 40 with respect to the projection 51 a of No. 1 and is fixed by the screw 53. Reference numeral 54 is a sensor case that holds the shake detection sensor 37.

Here, image shake of a camera or the like is rotational shake in the vertical direction (hereinafter referred to as pitch shake), rotational shake in the horizontal direction (hereinafter referred to as yaw shake), and rotational shake about the photographing optical axis ( In the following, this is referred to as roll runout) and three-dimensional runout occurs as a composite. Of these, roll shake correction can be omitted, but effective image stabilization cannot be achieved unless at least pitch shake and yaw shake are corrected at the same time. Therefore, in this embodiment, the pitch shake detection sensor 3
7p and a yaw shake detection sensor 37y, both sensors are housed in the sensor housing parts 54a and 54b of the case 54 via elastic sheets 55p and 55y such as urethane foam, and the claw 5
4c and 54d prevent it from coming off and being fixed.

Then, three holes 54e, 54f, 54 of the case 54 accommodating the shake detection sensors 37p, 37y are provided.
A cylindrical rubber foot 56 is attached to g, and is fixed to the protrusion 51b of the fixed cylinder 51 with a screw 57.

On the other hand, the shake detecting sensors 37p and 37y are soldered to a sensor substrate 58 formed of a flexible printed circuit board.
It is connected to the lens substrate 40 by a connector 59 on the top.

Reference numeral 60 denotes an arithmetic processing circuit element for arithmetically processing the output signals of the shake detection sensors 37p and 37y, which is composed of a filter for cutting unnecessary components of the shake signal, an operational amplifier having a function of signal amplification and the like.

The lens C described above is mounted on the lens substrate 40.
The PU 35 is mounted, and a flexible printed circuit board 61 for electrically connecting the above-described image blur correction actuator 39 is connected via a connector 62.

According to the above construction, the rubber foot 56, the sensor case 54, and the elastic sheets 55p and 55y are interposed between the fixed cylinder 51 and the shake detection sensors 37p and 37y.
Harmful high-frequency vibration caused by the operation of the quick return mirror 15 of the camera, the shutter, or the focusing actuator 38 of the lens is effectively blocked.

More specifically, the two shake detection sensors 3
Since the rubber feet 56, which are elastic members, are interposed between the 7p, 37y and the fixed cylinder 51, which is the housing, and the rubber feet 56 collectively support them in a floating manner.
It is possible to reduce the number of elastic members, and it is possible to achieve both elimination of harmful vibrations and maintenance of transmission of camera shake vibrations.
Further, since the elastic sheets 55p and 55y, which are elastic members, are interposed between the two shake detection sensors 37p and 37y and the sensor case forming the holding means, the harmful vibration removal and the hand shake vibration are prevented as described above. The transmission can be maintained at the same time, and the assembling work can be facilitated. Further, by adopting the above-mentioned structure, the mounting device can be downsized and the cost can be reduced.

On the other hand, the first and second mounting holes 54e and 54f of the sensor case 54 and the second and third mounting holes 54f.
And 54g are substantially orthogonal to each other, and the respective intervals have a length larger than the outer dimensions of the shake detection sensors 37p and 37y, and are substantially horizontal and substantially vertical (each shake). Since it is also orthogonal to the detection sensitivity axis), even if the rigidity of the rubber foot 56 is lowered, the shake detection sensor 37
As compared with the case where p and 37y are individually attached to the fixed cylinder 51, the supporting rigidity of the case 54 in the pitch shake and yaw shake directions can be made sufficiently high, and the shake detection characteristics in the band such as camera shake do not deteriorate.

Further, since the sensor board 58 made of a flexible printed board is used to extract the output signals of the shake detection sensors 37p and 37y, harmful vibrations from the lens board 40 can be obtained without using a new elastic member. It can be blocked effectively.

Furthermore, in the first embodiment, since the component (arithmetic processing circuit element 60) is mounted on the sensor substrate 58, the natural frequency of the sensor substrate 58 decreases due to the mass of the component. In addition, the effect of blocking the vibration from the lens substrate 40 is further enhanced, and the space of the lens substrate 40 is saved.

Although the elastic sheet 55 and the rubber foot 56 are used as members for blocking harmful vibrations in this embodiment, either one can be omitted depending on the degree of the blocking effect.

The same effect can be obtained by integrally molding the elastic sheet 55 or the rubber foot 56 with the sensor case 54.

(Second Embodiment) FIG. 2 is an exploded perspective view showing the essential structure of a camera equipped with a shake detecting means mounting device according to a second embodiment of the present invention. Similar to FIG. 1, this drawing is also a view of the interchangeable lens 31 of FIG. 6 viewed from the mount side, and the same components as those in FIG. 1 are denoted by the same reference numerals.

In FIG. 2, reference numeral 71 denotes a sensor case similar to that of the first embodiment shown in FIG.
1a, 71b, locking claws 71c, 71d, mounting holes 71e,
It has 71f and 71g.

On the other hand, the shake detection sensors 37p and 37y are connected to the sensor housing portion 7 via the first elastic sheets 72p and 72y.
1a, 71b, the sensor substrate 58 is soldered, and then is pressed by the pressing plate 74 via the second elastic sheets 73p, 73y. The pressing plate 74 is locked by the locking claws 71c, 71d of the sensor case 71. It will be fixed in place by locking. The above sensor unit is attached to the protrusion 51b of the fixed cylinder 51 with the screw 57 via the rubber foot 56.

As described above, in the second embodiment, the shake detecting sensors 37a and 37b are connected to the two elastic sheets 72p and 72p.
It is possible to obtain the same effect as that of the first embodiment, such as sandwiching it by y, 73p, 73y, and further attaching it to the sensor case 71 using the pressing plate 74 so as to both eliminate harmful vibration and maintain transmission of camera shake vibration. It is what

(Third Embodiment) FIG. 3 is an exploded perspective view showing the essential structure of a camera equipped with a shake detecting means mounting device according to a third embodiment of the present invention. Similar to FIG. 1, this drawing is also a view of the interchangeable lens 31 of FIG. 6 viewed from the mount side, and the same components as those in these drawings are denoted by the same reference numerals.

In FIG. 3, the sensor case 81 has a projection 81a, 81b, 81c having screw holes and a mounting hole 81.
e, 81f, 81g are provided.

On the other hand, the sensor board 82 formed of a flexible printed board has the protrusions 81a, 81b, 8
Holes 82a, 82b, and 82c are provided at positions facing 1c. Then, after the shake detection sensors 37p and 37y are soldered to the sensor board 82, the sensor board 82 is attached to the sensor case 81 with a screw 83.

When the sensor substrate 82 to which the shake detecting sensors 37p and 37y are soldered is attached to the sensor case 81, the shake detecting sensors 37p and 37y and the sensor case 81 are attached.
The elastic sheets 84p and 84y are sandwiched between them. This is because the shake detection sensors 37p and 37y have a cantilever structure with respect to the sensor substrate 82.
This is because it may resonate with camera shake of about 0 Hz or camera shake, so that it serves as a damper for preventing this resonance. Therefore, if the resonance is negligible, the elastic sheets 84p and 84y are of course used.
Can be abolished.

As described above, in the third embodiment, the shake detection sensors 37a and 37b are connected to the sensor substrate 8 having an elastic function.
It is attached to the sensor case 81 via the second member, and the same effect as that of the first embodiment is achieved, such as the elimination of harmful vibration and the maintenance of the transmission of camera shake vibration, without using a new elastic member. It is a thing.

(Fourth Embodiment) FIG. 4 is an exploded perspective view showing the essential structure of a camera equipped with a shake detecting means mounting device according to a fourth embodiment of the present invention. Similar to FIGS. 1 to 3, this drawing is also a view of the interchangeable lens 31 of FIG. 6 viewed from the mount side, and the same components as those in these drawings are denoted by the same reference numerals.

In FIG. 4, two shake detection sensors 37p and 37y are soldered and connected to a sensor substrate 91 formed of a flexible printed circuit board. The sensor substrate 91 is then screwed into holes 91a, 91b, 9
It is attached to the protrusion 51c of the fixed cylinder 51 via 1c.
At this time, the elastic sheets 92p and 92y are sandwiched between the shake detection sensors 37p and 37y and the fixed cylinder 51 for the same reason as in the third embodiment. In addition, the sensor substrate 9
In order to enhance the effect of blocking harmful high frequency vibrations from the mounting hole portions 91a, 91b, 91c of No. 1 to the shake detecting sensors 37p, 37y, the soldering portions of the mounting hole portions 91a, 91b, 91c and the shake detecting sensors 37p, 37y. There is a notch between them.

As described above, in the fourth embodiment, the sensor substrate 91 on which the shake detection sensors 37p and 37y are mounted is directly attached to the fixed cylinder 51. With such a structure, it is possible to eliminate the need for an elastic member such as an elastic sheet, a sensor case, or the like, as compared with the first to third embodiments described above. Therefore, the number of parts can be significantly reduced, and an effective vibration isolation effect can be provided.

(Fifth Embodiment) FIG. 5 is an exploded perspective view showing the main structure of a camera equipped with a shake detecting means mounting device according to a fifth embodiment of the present invention. Similar to FIGS. 1 to 4, this drawing is also a view of the interchangeable lens 31 of FIG. 6 viewed from the mount side, and the same components as those in these drawings are denoted by the same reference numerals.

In the first to fourth embodiments described above, the main purpose is to eliminate the mechanical vibration propagating through the housing such as the fixed cylinder 51. In this embodiment, Is to effectively cut off the acoustic vibration that propagates in the air from the vibration source to the vibration detection sensors 37a and 37b, which are shake detection means.

In FIG. 5, 101 is a sensor case corresponding to 54 of FIG. 1 or 71 of FIG.
The sensor storage portions 101a and 101b are formed for 01c. Unlike the first and second shapes, the sensor housings 101a and 101b are spaces surrounded by walls on all sides. The base 101c has mounting holes 101e, 101f, 10 for the rubber feet 56 in the same manner as in the above-described embodiment.
1g is provided, and the fixed cylinder 5 is provided by the rubber foot 56 and the screw 57.
It is attached to 1.

On the other hand, the shake detection sensors 37p and 37y are
Similar to the second embodiment described above, the first elastic sheet 72
It is housed in the sensor storage units 101a and 101b via p and 72y. Then, after soldering the sensor substrate 58 to cut off the extra protrusion of the soldering terminals of the shake detection sensors 37p and 37y, the second elastic sheets 73p and 73y are placed and the lid 102 is adhesively fixed to the case 101. To do. It should be noted that the minute step portions 101h and 101 for allowing the sensor substrate 58 to pass through are provided in a part of the walls of the sensor housing portions 101a and 101b.
i, 101j are provided.

According to the above configuration, the sensor case 101
Sensor housing 1 which is a closed space formed by a lid and a lid 102
The shake detection sensors 37p and 37y are hermetically housed in 01a and 101b, and the sensor output can be taken out through the substrate 58.

Here, as the material of the sensor case 101 and the lid 102, it is desirable to use a material having a high ability to effectively block or attenuate acoustic vibration.
A material having a high sound insulation effect is a material having a high rigidity (elastic modulus or hardness) and a high ability to reverberate sound waves. For example, metal such as zinc die cast or aluminum die cast, fiber reinforced plastic such as glass reinforced polycarbonate,
Alternatively, a plastic containing an inorganic material such as ferrite fine particles or silicon powder is suitable. On the other hand, as a material having a high sound attenuation effect, POM or liquid crystal polymer, which has a large internal loss for sound wave transmission, is suitable. In addition, it can be said that these have excellent shape flexibility and are relatively low in cost.

As described above, the shake detection sensors 37p, 37
By storing y in the sealed space of the sensor case 101 and attaching it to the fixed cylinder 51, harmful acoustic vibration due to the operation of various mechanisms of the camera or the lens is effectively blocked, and the sensor output by the sound is output. It is possible to reduce the echo and improve the camera shake detection ability.

Further, in this embodiment, since the two sensor accommodating portions 101a and 101b are independent spaces, the mutual interference of the two shake detection sensors 37a and 37b, which is a problem particularly in the vibration gyro where mutual interference is likely to occur, occurs. It also has a great effect on prevention. This mutual interference is a phenomenon in which when the vibration frequencies of the vibrators of the two vibration gyros that are shake detection sensors are deviated by a small amount, the frequency signal of the difference between the vibration frequencies appears as an error component in the shake detection output. is there. Therefore, when the sensor storage spaces are independent of each other as in this embodiment, this mutual interference can be effectively prevented.

Further, the elastic sheets 72p, 72y, 7
By using 3p and 73y as a foamed sheet having a sound absorbing effect, it is possible to further improve the acoustic effect, and to make the cost and assembly workability excellent.

Further, the fifth embodiment has the following effects.

Mutual interference between the two shake detection sensors 37p and 37y formed by the vibration gyro causes the two shake detection sensors to be in addition to the path in which the vibration of one vibrator is transmitted as a sound wave in the air to the other vibrator. There is also a path through the printed circuit board to be connected.

To solve this problem, in the fifth embodiment,
A flexible printed circuit board having excellent vibration damping characteristics, not a hard board, is used as the sensor board 58 for extracting the output signals of the two shake detection sensors, and a strip-shaped portion that connects the mounting portions of the two shake detection sensors 37p and 37y. 58a
(See FIG. 5) is a minute step portion 101 of the sensor case 101.
By sandwiching and restraining the i, 101j and the lid 102, the vibration propagating in the substrate 58 can be effectively blocked. Therefore, it is possible to effectively prevent the vibrations generated by the two shake detection sensors from interfering with each other via the substrate 58.

The method of restraining the sensor substrate 58 is as follows.
In addition to the sandwiching by the two plate parts described above, if the method of mounting and fixing the part between the two sensor mounting parts on the sensor substrate 58 as shown in FIG. 4 is used, the vibration isolation effect is further excellent. It will be a good thing. In order to apply this method to the fifth embodiment of FIG. 5, the band-shaped portion 58a of the sensor substrate 58 is partially widened to form a hole, and the sensor case 101 is provided with a screw hole stud at the opposite position. The substrate 58 may be fixed to the stud with a screw.

The constraint of the sensor substrate 58 described above is
It is needless to say that the effect is exerted also in the configuration of the fourth embodiment shown in FIG. That is, in the embodiment of FIG. 4, the two shake detection sensors 37p and 37y through the air are used.
However, the mutual interference via the sensor substrate 91 can be effectively prevented.

The fifth embodiment is mainly intended to block acoustic vibrations as described above. When mechanical vibration is relatively small, the rubber feet 56 are eliminated and the sensor case 101 is replaced. You may directly attach to the fixed cylinder 51 with the screw 57. Even in this case, if the structure is such that the entire back surface of the base 101c of the sensor case 101 is not brought into contact with the fixed cylinder 51 but only the tip end surface of the protrusion 51b shown in FIG. Vibration propagation can be minimized. The lid 102 is also screwed into the case 1 with screws 57.
By adopting a shape that can be attached to the fixed cylinder 51 integrally with 01, the step of adhering the lid 102 can be eliminated, and the assembling workability is improved.

According to the above first to fifth embodiments, the sensor case having the two shake detection sensors is attached to the fixed cylinder, and the elastic sheet is interposed between the shake detection sensor and the fixed cylinder. As a result, while saving space and reducing costs, it is possible to effectively block only harmful high-frequency vibrations without degrading the shake detection capability, so it can be used as a shake detection device such as a camera or a shake correction device. When applied,
Accurate shake detection is possible while reducing the size and cost of the camera.

Further, a flexible printed circuit board is used for extracting the shake signal from the shake detection sensor, and a circuit element for processing the shake signal is mounted on the flexible printed circuit board to detect the shake through the flexible printed circuit board. It is possible to effectively block harmful vibrations reaching the sensor.

Further, according to the fifth embodiment, since the shake detection sensor is arranged in the sealed space, it is possible to effectively block the acoustic vibration propagating in the air. Become.

(Correspondence between Invention and Embodiment) In this embodiment, the fixed cylinder 51 corresponds to the casing of the present invention, the shake detecting sensors 37p and 37y correspond to a plurality of shake detecting means of the present invention, and the elastic sheet. 55p, 55y, 72p, 72y, 73
p, 73y, 84p, 84y, 92p, 92y, the sensor substrate 82, and the rubber foot 56 correspond to the elastic member of the present invention, and the sensor substrate includes the sensor cases 54, 71, 81, 101 and the flexible printed circuit board. Reference numeral 58 corresponds to the holding means of the present invention.

Further, the sensor cases 54, 71, 81, 1
01 is the holding means described in claim 1, the sensor board 58 is a flexible printed circuit board is the holding means described in claims 5 to 7, and the sensor case 101 is claim 10, 13,
14 respectively correspond to the holding means. Further, the rubber foot 56 is provided on the elastic member according to claim 2, and the elastic sheet 55 is provided.
p, 55y, 72p, 72y, 84p, 84y, 92
p, 92y, and the sensor board 82 are the elastic member according to claim 3, the sensor board 82 made of a flexible printed board is the elastic member according to claim 4, and the elastic sheet 72.
p, 72y, 73p, and 73y correspond to the elastic member according to claim 15, respectively.

Further, the arithmetic processing circuit element 60 corresponds to the arithmetic means of the present invention, the sensor boards 58, 82 and 91 correspond to the flexible printed board according to claim 8, and the lens board 40 corresponds to the claim 8. It corresponds to a printed circuit board. Further, the lid 102 for closing the sensor case 101 is defined by claim 10.
13 corresponds to the sealing member.

The above is the correspondence relationship between each configuration of the embodiments and each configuration of the present invention, but the present invention is not limited to the configurations of these embodiments, and a configuration capable of achieving the functions shown in the claims. It goes without saying that it may be of any type.

(Modification) In the present invention, other than the vibration gyro, other angular velocity sensors and other sensors (displacement, angular displacement sensor, acceleration, angular acceleration sensor, area sensor, etc.) are used as the shake detecting means. May be.

Further, in each of the above-described embodiments, it is assumed that the image blur correction means performs image blur prevention by moving an unillustrated image blur correction optical member in a plane substantially perpendicular to the optical axis. However, other image blur prevention means such as a variable apex angle prism may be used.

Further, in this embodiment, the case where the present invention is applied to a camera such as a single-lens reflex camera, a lens shutter camera, a video camera, etc., but the present invention can also be applied to other optical devices and further other devices. .

Further, the shake detecting means and the image shake preventing means corresponding to the shake detecting means can be separately provided in a plurality of devices mountable to each other, for example, a camera and an interchangeable lens mountable thereto. .

Furthermore, the present invention may be constructed by appropriately combining the above-described embodiments or their techniques.

[0117]

As described above, according to the present invention as set forth in claim 1, a holding means for accommodating a plurality of shake detecting means for detecting shake occurring in a housing, a housing and a plurality of shake detecting means. The elastic member is interposed between the means, and the elastic member is interposed between the plurality of shake detecting means respectively held by the holding means and the housing.

Therefore, it is possible to eliminate harmful mechanical vibrations to a plurality of shake detecting means while achieving downsizing and cost reduction of the device.

According to the present invention of claim 2, an elastic member is arranged between the housing and the holding means, and the plurality of shake detecting means and the holding means are collectively floated with respect to the housing by the elastic member. I try to support it.

Therefore, while reducing the number of elastic members, it is possible to achieve both the elimination of harmful vibration and the maintenance of transmission of shake vibration.

According to the present invention of claim 3, an elastic member is arranged between the shake detecting means and the holding means.

Therefore, the work of attaching the elastic member can be facilitated.

According to the present invention of claim 4, the flexible printed circuit board is used as the elastic member.

Therefore, a new elastic member is not required and the cost can be further reduced.

Further, according to the present invention of claim 5, a holding means which is fixed to the housing and accommodates a plurality of shake detecting means for detecting the shake generated in the housing, and which has an elastic portion in part, An elastic member interposed between the housing and the plurality of shake detecting means is provided, and the plurality of shake detecting means are held by the elastic holding means.

Therefore, the number of parts can be reduced and the cost can be reduced.

According to the present invention of claim 6, the flexible printed circuit board is used as a holding means for preventing harmful vibration transmission.

Therefore, it is possible to achieve a further cost reduction without requiring a new holding means.

Further, according to the present invention of claim 7, a holding means having at least three mounting portions is provided on the housing, and the first and second mounting portions of the mounting portions are tied together. The line segment and the line segment connecting the second and third attachment portions are substantially orthogonal to each other, and each line segment is also substantially orthogonal to each shake detection sensitivity axis of the plurality of shake detecting means. .

Therefore, it is possible to use a soft elastic member having an excellent ability to remove harmful vibrations, and it is possible to maintain the ability to detect shake vibration.

According to the present invention of claim 8, arithmetic means for arithmetically processing the output signals of the plurality of shake detecting means for detecting shake generated in the housing, and a terminal for outputting the output signal of the calculating means. A flexible printed circuit board having a plurality of shake detection means and a plurality of calculation means, and a printed circuit board having a connection portion connected to a terminal portion of the flexible printed circuit board An arithmetic means is mounted as a weight member in the middle of.

Therefore, the harmful vibration transmitted to the flexible printed board can be effectively blocked.

According to the present invention of claim 9, a vibration gyro is used as the plurality of shake detecting means.

Therefore, even minute vibrations can be detected.

According to the tenth aspect of the present invention, the holding means having a space fixed to the housing for accommodating a plurality of shake detecting means for detecting shake generated in the housing, and the space are substantially provided. A sealing member for sealing is provided, and the plurality of shake detecting means are sealed by a set of structural members including a holding means and a sealing member.

Therefore, it is possible to effectively block acoustic vibrations while achieving downsizing and cost reduction of the device.

According to the present invention of claim 11, the holding means is formed with a plurality of spaces for accommodating the plurality of shake detecting means independently.

Therefore, mutual interference between the shake detecting means can be prevented.

According to the twelfth aspect of the present invention, the vibration gyro is used as the plurality of shake detecting means.

Therefore, the vibration gyro which easily causes mutual interference can be used as the shake detecting means.

According to the thirteenth aspect of the present invention, among the die-cast metal, the fiber reinforced plastic, the inorganic material-filled plastic, or the liquid crystal polymer, which has a high degree of freedom in shape and a large effect of eliminating acoustic vibrations. The holding means and the sealing member are formed by either of them.

Therefore, the holding means and the sealing member can be formed at low cost, and the acoustic vibration isolation capability can be enhanced.

According to the fourteenth aspect of the present invention, the elastic member is arranged between the holding means and the sealing member.

Therefore, it is possible to enhance the effect of eliminating the acoustic vibration, and to lower the cost and improve the workability of assembling.

According to the fifteenth aspect of the present invention, a foamed sheet having a sound absorbing function is used as the elastic member.

Therefore, a further acoustic vibration removing effect can be provided.

According to the sixteenth or seventeenth aspect of the present invention, the shake generated in the housing is detected, and a plurality of shake detecting means such as a vibration gyro having a vibrating member is provided in the housing. Holding means for fixing to, and a flexible printed circuit board connected to the plurality of shake detection means,
A restraint means for restraining an intermediate portion of a plurality of connecting portions connected to the plurality of shake detecting means, for preventing the plurality of shake detecting means from interfering with each other via the flexible printed board. Is.

Therefore, only one flexible printed circuit board is required, and mutual interference between the shake detecting means generated through the flexible printed circuit board can be easily and effectively removed.

According to the eighteenth aspect of the present invention, the holding means for fixing the shake detecting means is composed of the first and second holding members, and the first and second holding members are flexible printed. The board is clamped and restrained.

Therefore, the mutual interference removing effect can be further enhanced.

According to the nineteenth aspect of the present invention, the flexible printed circuit board is fastened and restrained by using screws.

Therefore, it is possible to achieve a further cost reduction without requiring a new holding means.

According to the twentieth aspect of the present invention, the flexible printed circuit board also serves as the holding means.

Therefore, it is possible to achieve a further cost reduction without requiring a new holding means.

According to the twenty-first aspect of the present invention, the flexible printed circuit board is fastened and restrained by using screws.

Accordingly, the flexible printed circuit board can be attached and restrained at the same time, and the assembling workability can be improved and mutual interference can be further prevented.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a main part of a camera equipped with a shake detecting means mounting device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a configuration of a main part of a camera equipped with a shake detecting means mounting device according to a second embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a main configuration of a camera equipped with a shake detecting means mounting device according to a third embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a main configuration of a camera equipped with a shake detecting means mounting device according to a fourth embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a main configuration of a camera equipped with a shake detecting means mounting device according to a fifth embodiment of the present invention.

FIG. 6 is a conceptual diagram of a camera equipped with the shake detecting means mounting device of the present invention.

[Explanation of symbols]

37p, 37y Shake detection sensor 40 Lens substrate 51 Housing 53, 56, 57 Screw 55p, 55y, 72p, 72y, 73p, 73y Elastic sheet 54, 71, 81, 101 Sensor case 56 Rubber foot 58, 82, 91 Sensor substrate 84p, 84y, 92p, 92y elastic sheet 60 arithmetic processing circuit element 102 lid

Claims (21)

[Claims] 1. A holding means fixed to a housing for accommodating a plurality of shake detecting means for detecting shake generated in the housing, and interposed between the housing and the shake detecting means. An attachment device for shake detection means comprising an elastic member. 2. The shake detecting means mounting device according to claim 1, wherein the elastic member is interposed between the housing and the holding means. 3. The shake detecting means mounting device according to claim 1, wherein the elastic member is interposed between the shake detecting means and the holding means. 4. The shake detecting means mounting device according to claim 3, wherein the elastic member is a flexible printed circuit board. 5. A plurality of shake detecting means for detecting shake generated in a housing, a holding means fixed to the housing and housing the plurality of shake detecting means, which partly has an elastic portion, and the housing. An attachment device for shake detection means comprising a body and an elastic member interposed between the plurality of shake detection means. 6. The shake detecting means mounting device according to claim 5, wherein the holding means is a flexible printed circuit board. 7. The holding means has at least three attachment portions with respect to the housing, and of these attachment portions, a line segment connecting the first and second attachment portions and a second and a second segment. 3. The line segments connecting the mounting portions of 3 are substantially orthogonal to each other, and each line segment is also substantially orthogonal to the shake detection sensitivity axes of the plurality of shake detecting means. Attachment device for shake detection means described in 2, 3, 4, 5 or 6. 8. A plurality of shake detecting means for detecting shake generated in a housing, a calculating means for calculating output signals of the plurality of shake detecting means, and a terminal section for outputting output signals of the calculating means. An apparatus for mounting shake detecting means, comprising: a flexible printed board having the plurality of shake detecting means and the arithmetic means mounted thereon; and a printed board having a connecting portion connected to a terminal portion of the flexible printed board. 9. The vibration gyroscope according to claim 1, wherein the plurality of shake detecting means are vibration gyros that detect angular velocities of shakes around at least two axes of the housing that are orthogonal to each other.
An attachment device for shake detection means described in 2, 3, 4, 5, 6, 7 or 8. 10. A plurality of shake detecting means for detecting shake generated in a housing, a holding means having a space fixed to the housing and housing the plurality of shake detecting means, and the space being substantially sealed. An attachment device for shake detection means, comprising: 11. The shake detecting means mounting device according to claim 10, wherein the holding means has a plurality of spaces for accommodating the plurality of shake detecting means independently. 12. The shake detecting means mounting device according to claim 10, wherein the plurality of shake detecting means are vibration gyros. 13. The holding means and the sealing member are made of any one of metal die-cast, fiber reinforced plastic, inorganic material-filled plastic, and liquid crystal polymer. Mounting device for shake detection means. 14. Between the holding means and the sealing member,
11. An elastic member is interposed between the elastic member and the elastic member.
Attachment device for shake detection means according to 1, 12 or 13. 15. The attachment device for shake detection means according to claim 14, wherein the elastic member is a foamed sheet. 16. A holding means for fixing a plurality of shake detecting means having a vibrating member to the case, and a shake detecting means for detecting shake generated in a housing, and the shake detecting means. An attachment device for shake detection means, comprising: a restraint means for restraining an intermediate portion of a plurality of connecting portions of the flexible printed circuit board connected to the shake detection means. 17. The shake detecting means mounting device according to claim 16, wherein the shake detecting means is a vibration gyro. 18. The holding means comprises a first holding member for accommodating the shake detecting means and a second holding member abutting against the first holding member, and the restraining means for the flexible printed circuit board. 2. The holding parts of the first and second holding means for sandwiching both surfaces of the first and second holding means.
Attachment device for shake detection means according to item 6. 19. The shake detecting means mounting device according to claim 16, wherein the restraint means is a screw and the holding means with which the screw is screwed or a screw fastening portion provided on the housing. 20. The shake detecting means mounting device according to claim 16, wherein the holding means is the flexible printed circuit board. 21. The shake detecting means mounting device according to claim 20, wherein the restraint means is a screw and a screw fastening portion provided on the housing with which the screw is screwed.