CN113410940A - Low-frequency small-volume motor type transducer - Google Patents

Low-frequency small-volume motor type transducer Download PDF

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Publication number
CN113410940A
CN113410940A CN202110600571.9A CN202110600571A CN113410940A CN 113410940 A CN113410940 A CN 113410940A CN 202110600571 A CN202110600571 A CN 202110600571A CN 113410940 A CN113410940 A CN 113410940A
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CN
China
Prior art keywords
bevel gear
cover plate
gear shaft
shaft
small
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Pending
Application number
CN202110600571.9A
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Chinese (zh)
Inventor
黄东
马振
洪有财
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715th Research Institute of CSIC
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715th Research Institute of CSIC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 715th Research Institute of CSIC filed Critical 715th Research Institute of CSIC
Priority to CN202110600571.9A priority Critical patent/CN113410940A/en
Publication of CN113410940A publication Critical patent/CN113410940A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/132—Submersible electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/075—Means for converting reciprocating motion into rotary motion or vice versa using crankshafts or eccentrics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H02P1/30—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by progressive increase of frequency of supply to primary circuit of motor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention discloses a low-frequency small-volume motor type transducer, which relates to the field of transducers and comprises an upper shell and the like, wherein the upper shell is fixed on a lower shell, a supporting plate is arranged in the lower shell, a servo motor is fixedly arranged on the lower surface of the supporting plate, a motor shaft of the servo motor penetrates through the supporting plate and is connected with a small bevel gear shaft, and a large bevel gear is sleeved on the large bevel gear shaft; the top of going up the casing is equipped with the front shroud, and a front shroud connecting seat is respectively installed to the both sides of front shroud bottom, stretches out a connecting axle on the front shroud connecting seat, and a action wheel is respectively installed at the both ends of big bevel gear axle, and the one end that deviates from big bevel gear axle on the action wheel is equipped with the eccentric shaft, and connecting rod, front shroud are reciprocating motion from top to bottom under the eccentric shaft drives. The invention has small occupied space, is totally closed, and can be used in different water depths with pressure compensation; adopt motor drive, transmission simple structure, during the in-service use only need set for the converter frequency start can, convenient to use.

Description

Low-frequency small-volume motor type transducer
Technical Field
The invention relates to the field of transducers, in particular to a low-frequency small-volume motor type transducer.
Background
The electrodynamic transducer is an underwater low-frequency transmitting transducer. At present, the electrodynamic transducer can be divided into two types according to the driving mode, one is electromagnetic type, and the other is motor type. The electromagnetic transducer is also called moving-coil transducer, the coil of the transducer is fixedly connected with the radiation surface, when current passes through the coil, the coil can generate a magnetic field which acts with the fixed magnet to drive the radiation surface to vibrate. When the electromagnetic transducer is used, a signal source and a power amplifier are generally needed, and the system composition is complex. The motor type transducer is a transducer taking a motor as a driving mode, has a simple structure, and can generally realize very low frequency and high power transmission.
CN107731218A discloses a reciprocating underwater very low frequency sound source, which replaces the lower end of an electric impact rammer with an excitation rod and a piston, and converts the rotation motion of a motor into the linear reciprocating motion of the excitation rod and the piston by using a crankshaft, a speed reducing mechanism, a spring, etc. of the electric impact rammer motor to push the piston to reciprocate periodically underwater, thereby generating a very low frequency sound wave signal. The motor and transmission part of the whole device are covered by a shell to block sound, two air bags are arranged at the bottom of the shell, the whole device floats on the water surface by buoyancy generated by the air bags, the piston is placed in the water, and the reciprocating motion generates vibration. Although the driving mode of the device is a motor, the device is large in size and completely closed, and cannot work in different underwater depths.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a low-frequency small-volume electromechanical transducer which has the advantages of small volume and light weight.
The purpose of the invention is achieved by the following technical scheme: the low-frequency small-volume motor type transducer comprises an upper shell, a lower shell, a bottom cover plate, a pressure compensation air bag, a servo motor, a support plate and a guide rod, wherein the upper shell is fixed on the lower shell; the top of the upper shell is provided with a front cover plate, two sides of the bottom of the front cover plate are respectively provided with a front cover plate connecting seat, a connecting shaft extends out of the front cover plate connecting seats, two ends of the large bevel gear shaft are respectively provided with a driving wheel, one end of each driving wheel, which is far away from the large bevel gear shaft, is provided with an eccentric shaft, one end of each connecting rod is arranged on the connecting shaft, the other end of each connecting rod is arranged on the eccentric shaft, and the connecting rods and the front cover plate are driven by the eccentric shafts to reciprocate up and down; one end of the guide rod is fixed at the bottom of the front cover plate, the other end of the guide rod is arranged in the linear bearing in a sliding mode, and the guide rod and the linear bearing are arranged coaxially, so that the front cover plate is guaranteed to do reciprocating motion along a straight line all the time; the bottom cover plate is installed at the bottom of the lower shell in a sealing mode, the pressure compensation air bag is fixed on the bottom cover plate, and an air outlet of the pressure compensation air bag penetrates through the bottom cover plate and is communicated with an inner cavity of the lower shell to balance the internal pressure and the external pressure of the transducer, so that the work under different water depth environments is realized.
As a further technical scheme, the bottom of the upper shell is hermetically connected with the top of the lower shell through an O-shaped rubber ring A, and the bottom of the lower shell is hermetically connected with a bottom cover plate through an O-shaped sealing ring B; the top of the upper shell is provided with a front cover plate sealing rubber which seals the upper shell and the front cover plate.
As a further technical scheme, an annular step is arranged on the inner wall of the lower shell, and the support plate is fixed on the annular step through threads.
As a further technical scheme, a motor feedback signal watertight connector and a motor driving signal watertight connector are mounted on the outer wall of the lower shell, and a corresponding signal jack is also arranged on the driving motor and used for electrically connecting an external servo driver to realize control over the servo motor; and the outer wall of the lower shell is also provided with an inflation valve which is communicated with the air outlet of the pressure compensation air bag and is used for inflating high-pressure gas into the pressure compensation air bag.
As a further technical scheme, a bottom plate is arranged under the bottom cover plate, and a plurality of protection rods are arranged between the bottom plate and the bottom cover plate along the circumference, so that the pressure compensation air bag is positioned in a space surrounded by the protection rods to form protection.
As a further technical scheme, the large bevel gear and the large bevel gear shaft are connected through a flat key B and are locked and fixed by a locking nut to prevent circumferential rotation; the small bevel gear is connected with the small bevel gear shaft through a flat key A.
As a further technical scheme, the large bevel gear shaft is supported on a large bevel gear shaft bracket through a bearing B, and the small bevel gear shaft is supported on a small bevel gear bracket through a bearing A; a motor shaft of the servo motor is connected with the small bevel gear shaft through the elastic coupling for transmission.
As a further technical scheme, the driving wheel is connected with the large bevel gear shaft through a key, and is stopped and fixed by the baffle A, so that circumferential rotation is prevented.
As a further technical scheme, one end of the connecting rod is supported on the eccentric shaft through a bearing C and is fixed by a baffle B and a stop nut; the other end of the connecting rod is supported on the connecting shaft through a bearing C.
As a further technical scheme, the bottom of the linear bearing is fixed on an upper support, and two sides of the upper support are supported on a supporting plate through side supports.
The invention has the beneficial effects that: the occupied space is small, the whole body is closed, and the pressure compensation can be used under different water depths; adopt motor drive, transmission simple structure, during the in-service use only need set for the converter frequency start can, convenient to use.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 2.
Fig. 4 is a front view of the structure of the driving wheel.
Fig. 5 is a structural side view of the driving wheel.
Fig. 6 is a front view of the structure of the front cover plate connecting seat.
Fig. 7 is a structural side view of the front cover plate connecting seat.
Description of reference numerals: the device comprises an upper shell 1, a lower shell 2, a bottom cover plate 3, an O-shaped rubber ring A4, an O-shaped sealing ring B5, front cover plate sealing rubber 6, a pressure compensation air bag 7, a motor feedback signal watertight connector 8, a motor driving signal watertight connector 9, an inflation valve 10, a protection rod 11, a servo motor 12, a support plate 13, a small bevel gear shaft 14, an elastic coupling 15, a bearing A16, a small bevel gear bracket 17, a small bevel gear 18, a flat key A19, a large bevel gear 20, a large bevel gear shaft 21, a flat key B22, a locking nut 23, a large bevel gear shaft bracket 24, a bearing B25, a driving wheel 26, a key 27, a baffle A28, an eccentric shaft 29, a connecting rod 30, a bearing C31, a stopping nut 32, a baffle B33, a front cover plate connecting seat 34, a connecting shaft 35, a guide rod 36, a linear bearing 37, an upper bracket 38, a side bracket jack 39, a front cover plate 40, a signal 41 and a bottom plate 42.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in fig. 1 to 7, the low-frequency small-volume motor type transducer comprises an upper shell 1, a lower shell 2, a bottom cover plate 3, a pressure compensation air bag 7, a servo motor 12, a support plate 13 and a guide rod 36, wherein the upper shell 1 is fixed on the lower shell 2, the support plate 13 is arranged in the lower shell 2, an annular step is arranged on the inner wall of the lower shell 2, and the support plate 13 is fixed on the annular step through threads. A servo motor 12 is fixedly arranged on the lower surface of the supporting plate 13, a motor shaft of the servo motor 12 penetrates through the supporting plate 13 and is connected with and drives a small bevel gear shaft 14, the small bevel gear shaft 14 is supported on the supporting plate 13 through a small bevel gear support 17, a small bevel gear 18 sleeved on the small bevel gear shaft 14 is in meshing transmission with a large bevel gear 20, the large bevel gear 20 is sleeved on a large bevel gear shaft 21, and the large bevel gear shaft 21 is supported on the supporting plate 13 through a large bevel gear shaft support 24; the large bevel gear 20 is connected with the large bevel gear shaft 21 through a flat key B22 and is locked and fixed by a locking nut 23 to prevent circumferential rotation, and the small bevel gear 18 is connected with the small bevel gear shaft 14 through a flat key A19. Preferably, the large bevel gear shaft 21 is supported on the large bevel gear shaft bracket 24 by a bearing B25 (deep groove ball bearing), and the small bevel gear shaft 14 is supported on the small bevel gear bracket 17 by a bearing a16 (tapered roller bearing); the motor shaft of the servo motor 12 is connected with the small bevel gear shaft 14 for transmission through an elastic coupling 15.
The top of the upper shell 1 is provided with a front cover plate 40, two sides of the bottom of the front cover plate 40 are respectively provided with a front cover plate connecting seat 34, a connecting shaft 35 extends out of the front cover plate connecting seat 34, two ends of the large bevel gear shaft 21 are respectively provided with a driving wheel 26, the driving wheel 26 is connected with the large bevel gear shaft 21 through a key 27 and is stopped and fixed by a baffle A28 to prevent circumferential rotation. An eccentric shaft 29 is arranged at one end of the driving wheel 26, which is far away from the large bevel gear shaft 21, one end of a connecting rod 30 is arranged on the connecting shaft 35, the other end of the connecting rod 30 is arranged on the eccentric shaft 29, and the connecting rod 30 and the front cover plate 40 are driven by the eccentric shaft 29 to reciprocate up and down; one end of the guide rod 36 is fixed at the bottom of the front cover plate 40, the other end of the guide rod 36 is arranged in the linear bearing 37 in a sliding manner, and the two are arranged coaxially, so that the front cover plate 40 is ensured to do reciprocating motion along a straight line all the time; the linear bearing 37 is fixed at the bottom to an upper bracket 38, and both sides of the upper bracket 38 are supported on the support plate 13 through side brackets 39. Preferably, one end of the connecting rod 30 is supported on the eccentric shaft 29 through a bearing C31 (deep groove ball bearing) and fixed with a baffle B33 and a stop nut 32; the other end of the connecting rod 30 is supported on the connecting shaft 35 through a bearing C31.
The bottom cover plate 3 is hermetically installed at the bottom of the lower shell 2, the pressure compensation air bag 7 is fixed on the bottom cover plate 3, and an air outlet of the pressure compensation air bag 7 penetrates through the bottom cover plate 3 and is communicated with an inner cavity of the lower shell 2, so that the internal pressure and the external pressure of the transducer are balanced, and the work under different water depth environments is realized. Preferably, a bottom plate 42 is arranged right below the bottom cover plate 3, and a plurality of protection rods 11 are circumferentially arranged between the bottom plate 42 and the bottom cover plate 3, so that the pressure compensation air bag 7 is positioned in a space surrounded by the protection rods 11 to form protection.
Preferably, the bottom of the upper shell 1 is hermetically connected with the top of the lower shell 2 through an O-shaped rubber ring A4, and the bottom of the lower shell 2 is hermetically connected with the bottom cover plate 3 through an O-shaped sealing ring B5; the top of the upper shell 1 is provided with a front cover plate sealing rubber 6 for sealing the upper shell 1 and the front cover plate 40.
Preferably, the outer wall of the lower shell 2 is provided with a motor feedback signal watertight connector 8 and a motor driving signal watertight connector 9, and the driving motor 12 is also provided with a corresponding signal jack 41 for electrically connecting an external servo driver to realize the control of the servo motor 12; the outer wall of the lower shell 2 is also provided with an inflation valve 10, and the inflation valve 10 is communicated with the air outlet of the pressure compensation air bag 7 and is used for inflating high-pressure air into the pressure compensation air bag 7.
The working principle of the invention is as follows: when the bevel gear reducer works, the servo motor 12 rotates to drive the small bevel gear 18 to rotate, the small bevel gear 18 drives the large bevel gear 20 to rotate, and the reduction ratio of the small bevel gear 18 to the large bevel gear 20 is 2: 1. The rotation of the large bevel gear 20 drives the large bevel gear shaft 21 to rotate and further drives the driving wheels 26 at the two ends of the large bevel gear shaft 21 to rotate. Since the shaft on the driving wheel 26 is the eccentric shaft 29, the rotation of the driving wheel 26 drives the connecting rod 30 to make a periodic reciprocating motion. The other end of the connecting rod 30 is connected with the front cover plate 40, so that the front cover plate 40 is driven to do the periodic movement of up-and-down displacement to generate sound waves, and the frequency of the sound waves is 0-60 Hz. The displacement amplitude of the front cover plate 40 is plus or minus 11 mm. The front cover 40 moves linearly under the restriction of the guide mechanism consisting of the guide rod 36, the linear bearing 37, the upper bracket 38 and the side bracket 39. The lower shell 2 is provided with a motor driving signal watertight connector 9 and a motor feedback signal watertight connector 8 which are connected with a servo driver on the water surface to realize the control of a servo motor 12. An inflation valve 10 is arranged on the lower shell 2, and an air hole is formed in the center of the bottom cover plate 3 and is connected with the pressure compensation air bag 7. The protection bar 11 functions to protect the pressure compensation bladder 7. According to the working water depth of the transducer, the transducer is charged with specific pressure through the charging valve 10 to realize pressure compensation, so that the transducer can work in different water depths.
Take an electrodynamic transducer with an operating frequency of 20Hz to 500Hz and an acoustic source level of 164dB as an example. When the transducer works, the coil can provide Lorentz force of about 540N, the diameter of a radiation surface is about 200mm, the maximum stroke is +/-11 mm, and the weight is about 35 kg. If the motor is used for driving, the power of a servo motor is 2KW, the rated rotating speed is 3000r/min, the rated torque is 6.4 N.m, the weight is 4KG, and when the electric-mechanical conversion efficiency is 90 percent and the vibration displacement is 1 +/-11 mm, the 2000W motor can provide the maximum thrust which is not less than 1300N. From the torque angle calculation, for a rated torque of 6.4N · m, the thrust can be roughly calculated to be 3000/1200 × 100 × 6.4 — 1600N at 20Hz when the maximum displacement is ± 11 mm. From the above calculations, it can be seen that the electromechanical transducer has great advantages in terms of smaller size and weight.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.

Claims (10)

1. A low frequency small volume electromechanical transducer characterized in that: comprises an upper shell (1), a lower shell (2), a bottom cover plate (3), a pressure compensation air bag (7), a servo motor (12), a support plate (13) and a guide rod (36), the upper shell (1) is fixed on the lower shell (2), the supporting plate (13) is arranged in the lower shell (2), the servo motor (12) is fixedly arranged on the lower surface of the supporting plate (13), a motor shaft of the servo motor (12) penetrates through the supporting plate (13) and is connected with and drives the small bevel gear shaft (14), the small bevel gear shaft (14) is supported on the supporting plate (13) through the small bevel gear bracket (17), the small bevel gear (18) sleeved on the small bevel gear shaft (14) is in meshing transmission with the large bevel gear (20), the large bevel gear (20) is sleeved on the large bevel gear shaft (21), and the large bevel gear shaft (21) is supported on the supporting plate (13) through the large bevel gear shaft bracket (24); the top of the upper shell (1) is provided with a front cover plate (40), two sides of the bottom of the front cover plate (40) are respectively provided with a front cover plate connecting seat (34), a connecting shaft (35) extends out of the front cover plate connecting seat (34), two ends of the large-vertebra gear shaft (21) are respectively provided with a driving wheel (26), one end of the driving wheel (26) departing from the large-vertebra gear shaft (21) is provided with an eccentric shaft (29), one end of a connecting rod (30) is arranged on the connecting shaft (35), the other end of the connecting rod (30) is arranged on the eccentric shaft (29), and the connecting rod (30) and the front cover plate (40) are driven by the eccentric shaft (29) to do vertical reciprocating motion; one end of the guide rod (36) is fixed at the bottom of the front cover plate (40), the other end of the guide rod (36) is arranged in the linear bearing (37) in a sliding mode, and the guide rod and the linear bearing are arranged coaxially, so that the front cover plate (40) is guaranteed to do reciprocating motion along a straight line all the time; the bottom of the lower shell (2) is hermetically provided with a bottom cover plate (3), a pressure compensation air bag (7) is fixed on the bottom cover plate (3), and an air outlet of the pressure compensation air bag (7) penetrates through the bottom cover plate (3) and is communicated with the inner cavity of the lower shell (2) for balancing the internal and external pressures of the transducer and realizing the work under different water depth environments.
2. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: the bottom of the upper shell (1) is hermetically connected with the top of the lower shell (2) through an O-shaped rubber ring A (4), and the bottom of the lower shell (2) is hermetically connected with the bottom cover plate (3) through an O-shaped sealing ring B (5); the top of the upper shell (1) is provided with a front cover plate sealing rubber (6) which seals the upper shell (1) and the front cover plate (40).
3. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: an annular step is arranged on the inner wall of the lower shell (2), and the support plate (13) is fixed on the annular step through threads.
4. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: a motor feedback signal watertight connector (8) and a motor driving signal watertight connector (9) are installed on the outer wall of the lower shell (2), and a corresponding signal jack (41) is also arranged on the driving motor (12) and is used for electrically connecting an external servo driver to realize the control of the servo motor (12); an inflation valve (10) is further arranged on the outer wall of the lower shell (2), and the inflation valve (10) is communicated with an air outlet of the pressure compensation air bag (7) and is used for inflating high-pressure air into the pressure compensation air bag (7).
5. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: a bottom plate (42) is arranged under the bottom cover plate (3), and a plurality of protection rods (11) are arranged between the bottom plate (42) and the bottom cover plate (3) along the circumference, so that the pressure compensation air bag (7) is positioned in a space surrounded by the protection rods (11) to form protection.
6. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: the large bevel gear (20) is connected with a large bevel gear shaft (21) through a flat key B (22) and is locked and fixed by a locking nut (23) to prevent circumferential rotation; the small bevel gear (18) is connected with the small bevel gear shaft (14) through a flat key A (19).
7. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: the large bevel gear shaft (21) is supported on a large bevel gear shaft bracket (24) through a bearing B (25), and the small bevel gear shaft (14) is supported on a small bevel gear bracket (17) through a bearing A (16); the motor shaft of the servo motor (12) is connected with the small bevel gear shaft (14) through an elastic coupling (15) for transmission.
8. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: the driving wheel (26) is connected with the large bevel gear shaft (20) through a key (27) and is blocked and fixed by a baffle plate A (28) to prevent circumferential rotation.
9. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: one end of the connecting rod (30) is supported on the eccentric shaft (29) through a bearing C (31) and is fixed by a baffle B (33) and a stop nut (32); the other end of the link (30) is supported on a connecting shaft (35) via a bearing C (31).
10. A low frequency, small volume electromechanical transducer according to claim 1, characterized in that: the bottom of the linear bearing (37) is fixed on an upper bracket (38), and two sides of the upper bracket (38) are supported on the support plate (13) through side brackets (39).
CN202110600571.9A 2021-05-31 2021-05-31 Low-frequency small-volume motor type transducer Pending CN113410940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110600571.9A CN113410940A (en) 2021-05-31 2021-05-31 Low-frequency small-volume motor type transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110600571.9A CN113410940A (en) 2021-05-31 2021-05-31 Low-frequency small-volume motor type transducer

Publications (1)

Publication Number Publication Date
CN113410940A true CN113410940A (en) 2021-09-17

Family

ID=77675419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110600571.9A Pending CN113410940A (en) 2021-05-31 2021-05-31 Low-frequency small-volume motor type transducer

Country Status (1)

Country Link
CN (1) CN113410940A (en)

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