CN114157262B - Packaging structure of surface acoustic wave filter - Google Patents
Packaging structure of surface acoustic wave filter Download PDFInfo
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- CN114157262B CN114157262B CN202210119568.XA CN202210119568A CN114157262B CN 114157262 B CN114157262 B CN 114157262B CN 202210119568 A CN202210119568 A CN 202210119568A CN 114157262 B CN114157262 B CN 114157262B
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- surface acoustic
- wave filter
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02834—Means for compensation or elimination of undesirable effects of temperature influence
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/08—Holders with means for regulating temperature
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
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- Acoustics & Sound (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The packaging structure of the surface acoustic wave filter comprises a surface acoustic wave filter chip and a shell, wherein an opening is formed in the top end of the shell, the surface acoustic wave filter chip is arranged in the opening, a sealing plate is arranged on the opening and connected with the top end of the shell, a binding post is arranged on the surface acoustic wave filter chip, one end of the binding post is connected with the surface acoustic wave filter chip, and the other end of the binding post penetrates through the sealing plate and extends to the position above the sealing plate. Through the encapsulation of closing plate, improved sealed effect, reduced steam or dust and entered into in the opening, the operational environment of sound surface filter chip is more stable, has delayed electron device's ageing rate, has improved the life of wave filter.
Description
Technical Field
The invention belongs to the technical field of filters, and particularly relates to a packaging structure of a surface acoustic wave filter.
Background
The filter is a filter circuit consisting of a capacitor, an inductor and a resistor. The filter can effectively filter the frequency point of the specific frequency in the power line or the frequencies except the frequency point to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency. The surface acoustic wave filter is formed by evaporating a metal film on a material substrate with piezoelectric effect, and then photoetching to form a pair of interdigital electrodes at two ends respectively. When signal voltage is applied to the transmitting transducer, an electric field is formed between the input interdigital electrodes, so that the piezoelectric material generates mechanical vibration and transmits the mechanical vibration to the left side and the right side in the form of ultrasonic waves, and the energy towards the edge side is absorbed by the sound absorption material. At the receiving end, the mechanical vibration is converted into an electric signal by the receiving transducer and then is output by the interdigital electrode. The surface acoustic wave filter has the characteristics of high working frequency, wide pass band, good frequency selection characteristic, small volume, light weight and the like, can adopt the production process the same as that of an integrated circuit, is simple to manufacture, has low cost and good consistency of frequency characteristics, and is widely applied to various electronic equipment. In the existing surface acoustic wave filter, as shown in fig. 1, a chip is packaged in a stainless steel shell 100, and a wiring cylinder 200 is exposed outside the stainless steel shell, so that water vapor or dust is easy to enter due to poor sealing performance of the packaging, the working performance of the surface acoustic wave filter is affected, and the service life of the filter is shortened.
Disclosure of Invention
Therefore, the invention aims to solve the problems that in the prior art, the sealing performance of the surface acoustic wave filter is influenced and the service life of the filter is shortened due to the fact that moisture or dust is easy to enter because of poor sealing performance of the package.
The packaging structure of the surface acoustic wave filter comprises a surface acoustic wave filter chip and a shell, wherein an opening is formed in the top end of the shell, the surface acoustic wave filter chip is arranged in the opening, a sealing plate is arranged on the opening and connected with the top end of the shell, a binding post is arranged on the surface acoustic wave filter chip, one end of the binding post is connected with the surface acoustic wave filter chip, the other end of the binding post penetrates through the sealing plate and extends to the position above the sealing plate, and a heat dissipation device is arranged in the shell.
Preferably, the sealing plate is bonded to the top end of the housing by glue.
Preferably, the top end of the shell is provided with a circular ring, the circular ring is in threaded connection with a cover, the cover is provided with a through hole, and the binding post penetrates through the through hole.
Preferably, the heat sink includes: the novel air spring comprises a spring, a stop block and a shell, wherein a first ventilation hole and a second ventilation hole in the horizontal direction are formed in the side wall of the opening at intervals, a diversion hole in the vertical direction is formed in the shell, the diversion hole is communicated with the opening through the first ventilation hole and the second ventilation hole, the spring is arranged in the diversion hole, one end of the spring is connected with the top of the inner wall of the diversion hole, the other end of the spring is connected with the upper end of the stop block, the stop block can be plugged in the first ventilation hole, the bottom of the shell is provided with the shell, the lower end of the stop block is connected with one end of a pressing rod, and the other end of the pressing rod extends into the shell.
Preferably, the first vent hole, the second vent hole, the diversion hole, the spring, the stopper and the pressure lever are symmetrically arranged in another group around the vertical central line of the opening.
Preferably, a base is arranged at the bottom end of the shell.
Preferably, the bottom end of the shell is provided with a heat dissipation port, and a dust filter screen is arranged on the heat dissipation port.
Preferably, the lower end of the pressure rod is provided with a pressing block, and the pressing block is hemispherical.
Preferably, the apparatus further comprises a driving device, the driving device comprising: a motor, a first rotating shaft, a first crank, a first disc, a second rotating shaft, a second crank, a second disc, a first ring, a second ring and a first connecting rod,
a motor is arranged on the inner wall of the shell, an output shaft of the motor is connected with one end of a first rotating shaft, the other end of the first rotating shaft is connected with one end of a first crank, a first disc is eccentrically connected to the first rotating shaft, a second rotating shaft parallel to the first rotating shaft is arranged on the inner wall of the shell, one end of the second rotating shaft is rotationally connected with the inner wall of the shell, the other end of the second rotating shaft is connected with one end of a second crank, the first crank is parallel to the second crank, a second disc is eccentrically arranged on the second rotating shaft, a first circular ring is rotationally connected to the first disc, a second circular ring is rotationally connected to the second disc, and the first circular ring is connected with the second circular ring through a first connecting rod;
a horizontal moving plate is arranged below the first connecting rod and can be contacted with the pressing block, two supporting plates are arranged on the moving plate at intervals, a third rotating shaft in the horizontal direction penetrates through the supporting plates and is rotationally connected with the supporting plates, the other end of a second crank is rotationally connected with the left end of the moving plate, a first bevel gear is arranged at the right end of the third rotating shaft, fan blades are arranged at the left end of the third rotating shaft, a fourth rotating shaft penetrates through the left end of the moving plate and is rotationally connected with the moving plate, one end of the fourth rotating shaft is connected with one end, far away from the first rotating shaft, of the first crank, the other end of the fourth rotating shaft is connected with a second bevel gear, and the first bevel gear is meshed with the second bevel gear;
the dust filter comprises a movable plate, a sleeve, a fixed shaft, a sliding sleeve, a dust filter screen and a dust filter screen, wherein the sleeve is arranged below the movable plate, the fixed shaft penetrates through the sleeve, the sleeve is connected with the fixed shaft in a sliding mode, two ends of the fixed shaft are connected with the inner wall of a shell through a supporting seat, the sliding sleeve is arranged on the outer wall of the sleeve in the vertical direction, one end of the sliding rod is connected with the movable plate, the other end of the sliding rod penetrates through the sliding sleeve, a sweeping brush is arranged below the sleeve, the sweeping brush is connected with the sliding sleeve through a second connecting rod, and the sweeping brush can be in contact with the dust filter screen.
Preferably, a temperature sensor is arranged in the shell, a control chip is arranged in the shell, the temperature sensor is electrically connected with the control chip, and the control chip is electrically connected with the motor.
The technical scheme of the invention has the following advantages: the packaging structure of the surface acoustic wave filter comprises a surface acoustic wave filter chip and a shell, wherein an opening is formed in the top end of the shell, the surface acoustic wave filter chip is arranged in the opening, a sealing plate is arranged on the opening and connected with the top end of the shell, a binding post is arranged on the surface acoustic wave filter chip, one end of the binding post is connected with the surface acoustic wave filter chip, and the other end of the binding post penetrates through the sealing plate and extends to the position above the sealing plate. The opening is sealed through the sealing plate, the sealing effect is improved, water vapor or dust is reduced from entering the opening, the working environment of the surface acoustic wave filter chip is more stable, the aging speed of electronic devices is delayed, and the service life of the filter is prolonged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a prior art diagram
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural diagram of a heat dissipation device according to the present invention;
FIG. 4 is a schematic view of the structure of the driving device of the present invention;
FIG. 5 is a schematic view of the structure of the moving plate of the present invention;
wherein, 1-surface acoustic wave filter chip, 2-shell, 3-opening, 4-sealing plate, 5-binding post, 6-ring, 7-cover, 8-through hole, 9-first ventilation hole, 10-second ventilation hole, 11-diversion hole, 12-spring, 13-block, 14-shell, 15-pressure bar, 16-base, 17-heat dissipation port, 18-dust filtration net, 19-pressing block, 20-motor, 21-first rotating shaft, 22-first crank, 23-first disk, 24-second rotating shaft, 25-second crank, 26-second disk, 27-first ring, 28-second ring, 29-first connecting rod, 30-moving plate, 31-supporting plate, 32-third rotating shaft, 33-first bevel gear, 34-fan blade, 35-fourth rotating shaft, 36-second bevel gear, 37-sleeve, 38-fixed shaft, 39-supporting seat, 40-sliding sleeve, 41-sliding rod, 42-sweeping brush, 43-second connecting rod, 44-control chip, 45-temperature sensor, 100-stainless steel shell and 200-wiring rod.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The packaging structure of the surface acoustic wave filter comprises a surface acoustic wave filter chip 1 and a shell 2, wherein an opening 3 is formed in the top end of the shell 2, the surface acoustic wave filter chip 1 is arranged in the opening 3, a sealing plate 4 is arranged on the opening 3, the sealing plate 4 is connected with the top end of the shell 2, a binding post 5 is arranged on the surface acoustic wave filter chip 1, one end of the binding post 5 is connected with the surface acoustic wave filter chip 1, the other end of the binding post 5 penetrates through the sealing plate 4 and extends to the position above the sealing plate 4, and a heat dissipation device is arranged in the shell 2.
The working principle and the beneficial technical effects of the technical scheme are as follows: in the opening 3 of sound surface filter chip 1 installed on casing 2, terminal 5 was used for connecting other electron device, sealed with opening 3 through closing plate 4, improved sealed effect, reduced steam or dust and entered into opening 3 in, the operational environment of sound surface filter chip is more stable, has delayed electron device's ageing speed, has improved the life of wave filter.
In one embodiment, the sealing plate 4 is bonded to the top end of the housing 2 by glue.
In one embodiment, the top end of the shell 2 is provided with a ring 6, the ring 6 is in threaded connection with a cover 7, the cover 7 is provided with a through hole 8, the terminal 5 penetrates through the through hole 8, the sealing performance can be further improved through the cover 7, and the protection effect is also achieved.
In one embodiment, as shown in fig. 3, the heat dissipating device includes: spring 12, dog 13, shell 14, the interval is provided with the first ventilation hole 9 and the second ventilation hole 10 of horizontal direction on the lateral wall of opening 3, be provided with the water conservancy diversion hole 11 of vertical direction in the casing 2, water conservancy diversion hole 11 with opening 3 is through first ventilation hole 9, second ventilation hole 10 intercommunication, be provided with spring 12 in the water conservancy diversion hole 11, spring 12 one end with water conservancy diversion hole 11 inner wall top is connected, the spring 12 other end with dog 13 upper end is connected, dog 13 can the shutoff first ventilation hole 9, 2 bottoms of casing are provided with shell 14, dog 13 lower extreme is connected with depression bar 15 one end, and the depression bar 15 other end extends to in the shell 14. The first vent hole 9, the second vent hole 10, the diversion hole 11, the spring 12, the stopper 13 and the pressure lever 15 are symmetrically arranged in another group about the vertical central line of the opening 3.
The working principle and the beneficial technical effects of the technical scheme are as follows: two second ventholes 10 through the opening both sides, the air current of being convenient for is at opening 3 inner loop, the circulation of air current has been improved, dispel the heat to SAW filter chip 1 during operation, when the chip generates heat than more serious, press depression bar 15, make dog 13 rebound, first ventilation hole 9 also is in the on-state, increase the circulation of air current, the heat dissipation efficiency is improved, it is little when the chip heat dissipation capacity, loosen depression bar 15, under spring 12's effect, dog 13 blocks up first ventilation hole 9, reduce the circulation of air current, also reduced on the SAW filter chip 1 is fallen to the dust, reduce the influence of dust to SAW filter chip working property.
In one embodiment, a base 16 is disposed at the bottom end of the housing 14 and functions to support the housing 14.
In one embodiment, the bottom end of the housing 14 is provided with a heat dissipating port 17, and the heat dissipating port 17 is provided with a dust filter 18 for filtering air and reducing dust.
In one embodiment, the lower end of the pressure rod 15 is provided with a pressing block 19, and the pressing block 19 is hemispherical, so that the contact surface is smoother, and the abrasion is reduced.
In one embodiment, as shown in fig. 4-5, further comprising a driving device, the driving device comprising: a motor 20, a first rotating shaft 21, a first crank 22, a first disk 23, a second rotating shaft 24, a second crank 25, a second disk 26, a first ring 27, a second ring 28, a first connecting rod 29,
the inner wall of the shell 14 is provided with a motor 20, an output shaft of the motor 20 is connected with one end of a first rotating shaft 21, the other end of the first rotating shaft 21 is connected with one end of a first crank 22, the first rotating shaft 21 is eccentrically connected with a first disk 23, the inner wall of the shell 14 is provided with a second rotating shaft 24 parallel to the first rotating shaft 21, one end of the second rotating shaft 24 is rotatably connected with the inner wall of the shell 14, the other end of the second rotating shaft 24 is connected with one end of a second crank 25, the first crank 22 is parallel to the second crank 25, the second rotating shaft 24 is eccentrically provided with a second disk 26, the first disk 23 is rotatably connected with a first ring 27, the second disk 26 is rotatably connected with a second ring 28, and the first ring 27 is connected with the second ring 28 through a first connecting rod 29;
a horizontal moving plate 30 is arranged below the first connecting rod 29, the moving plate 30 can contact with the pressing block 19, two supporting plates 31 are arranged on the moving plate 30 at intervals, a third rotating shaft 32 in the horizontal direction penetrates through the supporting plates 31 and is rotatably connected with the supporting plates 31, the other end of a second crank 25 is rotatably connected with the left end of the moving plate 30, a first bevel gear 33 is arranged at the right end of the third rotating shaft 32, fan blades 34 are arranged at the left end of the third rotating shaft 32, a fourth rotating shaft 35 penetrates through the left end of the moving plate 30 and is rotatably connected with the moving plate 30, one end of the fourth rotating shaft 35 is connected with one end, far away from the first rotating shaft 21, of the first crank 22, the other end of the fourth rotating shaft 35 is connected with a second bevel gear 36, and the first bevel gear 33 is meshed with the second bevel gear 36;
the lower part of the movable plate 30 is provided with a sleeve 37, a fixed shaft 38 penetrates through the sleeve 37, the sleeve 37 is in sliding connection with the fixed shaft 38, two ends of the fixed shaft 38 are connected with the inner wall of the shell 14 through a supporting seat 39, the inner wall of the shell 14 is connected with the inner wall of the shell 14, a sliding sleeve 40 in the vertical direction is arranged on the outer wall of the sleeve 37, one end of a sliding rod 41 is connected with the movable plate 30, the other end of the sliding rod 41 penetrates through the sliding sleeve 40, a sweeping brush 42 is arranged below the sleeve 37, the sweeping brush 42 is connected with the sliding sleeve 40 through a second connecting rod 43, and the sweeping brush 42 can be in contact with the dust filtering net 18.
The working principle and the beneficial technical effects of the technical scheme are as follows: when the heat productivity of the chip is very high, the motor 20 is started to drive the first crank 22 to rotate, and because the parallelogram link mechanism is formed by the first connecting rod 29, the second crank 25, the first crank 22 and the moving plate 30, the moving plate 30 keeps rotating horizontally, the first crank 22 drives the second bevel gear 36 to rotate, the third rotating shaft 32 is driven to rotate through the meshing of the second bevel gear 36 and the first bevel gear 33, and the third rotating shaft 32 drives the fan blades 34 to rotate; the movable plate is in the in-process that keeps horizontal rotation, when the movable plate strikes left briquetting 19, will make two first ventilation holes 9 on left switch on, the intake has been increased, simultaneously, two first ventilation holes 9 on right side, only one ventilation hole switches on, make the wind speed increase, when the movable plate strikes right briquetting 19, will make two first ventilation holes 9 on right side switch on, the intake has been increased, increase the wind speed, the wind direction becomes reverse, the continuous cyclic motion of movable plate, make the continuous increase of wind speed, reduce, the wind direction also constantly changes, strengthen the circulation of air in the opening 3, and the heat dissipation efficiency is improved.
In one embodiment, a temperature sensor 45 is disposed in the housing 14, a control chip 44 is disposed in the housing 14, the temperature sensor 45 is electrically connected to the control chip 44, and the control chip 44 is electrically connected to the motor 20. The temperature sensor 45 can detect the temperature, and when the temperature exceeds the warning value, the control chip 44 starts the motor 20, starts the heat dissipation structure, and cools the surface acoustic wave filter chip, so that the chip can be kept in a normal working temperature range.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The packaging structure of the surface acoustic wave filter is characterized by comprising a surface acoustic wave filter chip (1) and a shell (2), wherein an opening (3) is formed in the top end of the shell (2), the surface acoustic wave filter chip (1) is arranged in the opening (3), a sealing plate (4) is arranged on the opening (3), the sealing plate (4) is connected with the top end of the shell (2), a wiring terminal (5) is arranged on the surface acoustic wave filter chip (1), one end of the wiring terminal (5) is connected with the surface acoustic wave filter chip (1), the other end of the wiring terminal (5) penetrates through the sealing plate (4) and extends to the position above the sealing plate (4), and a heat dissipation device is arranged in the shell (2);
the heat dissipating device includes: a spring (12), a stop block (13) and a shell (14), wherein a first vent hole (9) and a second vent hole (10) in the horizontal direction are arranged on the side wall of the opening (3) at intervals, a flow guide hole (11) in the vertical direction is arranged in the shell (2), the flow guide hole (11) is communicated with the opening (3) through a first vent hole (9) and a second vent hole (10), a spring (12) is arranged in the diversion hole (11), one end of the spring (12) is connected with the top of the inner wall of the diversion hole (11), the other end of the spring (12) is connected with the upper end of the stop block (13), the stop block (13) can block the first vent hole (9), a shell (14) is arranged at the bottom end of the shell (2), the lower end of the stop block (13) is connected with one end of a pressure rod (15), and the other end of the pressure rod (15) extends into the shell (14);
a heat dissipation port (17) is formed in the bottom end of the shell (14), a dust filtering net (18) is arranged on the heat dissipation port (17), a pressing block (19) is arranged at the lower end of the pressing rod (15), and the pressing block (19) is hemispherical;
still include drive arrangement, drive arrangement includes: a motor (20), a first rotating shaft (21), a first crank (22), a first disc (23), a second rotating shaft (24), a second crank (25), a second disc (26), a first ring (27), a second ring (28) and a first connecting rod (29),
the inner wall of the shell (14) is provided with a motor (20), an output shaft of the motor (20) is connected with one end of a first rotating shaft (21), the other end of the first rotating shaft (21) is connected with one end of a first crank (22), a first disc (23) is eccentrically connected with the first rotating shaft (21), the inner wall of the shell (14) is provided with a second rotating shaft (24) parallel to the first rotating shaft (21), one end of the second rotating shaft (24) is rotationally connected with the inner wall of the shell (14), the other end of the second rotating shaft (24) is connected with one end of a second crank (25), the first crank (22) is parallel to the second crank (25), the second rotating shaft (24) is eccentrically provided with a second disc (26), the first disc (23) is rotationally connected with a first ring (27), the second disc (26) is rotationally connected with a second ring (28), the first ring (27) and the second ring (28) are connected through a first connecting rod (29);
a moving plate (30) in the horizontal direction is arranged below the first connecting rod (29), the moving plate (30) can be in contact with the pressing block (19), two supporting plates (31) are arranged on the moving plate (30) at intervals, a third rotating shaft (32) in the horizontal direction penetrates through the supporting plates (31) and is rotatably connected with the supporting plates (31), the other end of a second crank (25) is rotatably connected with the left end of the moving plate (30), a first bevel gear (33) is arranged at the right end of the third rotating shaft (32), fan blades (34) are arranged at the left end of the third rotating shaft (32), a fourth rotating shaft (35) penetrates through the left end of the moving plate (30) and is rotatably connected with the moving plate (30), one end of the moving plate (35) is connected with one end, far away from the first rotating shaft (21), of the first crank (22), of the moving plate, and the other end of the fourth rotating shaft (35) is connected with a second bevel gear (36), the first bevel gear (33) is meshed with the second bevel gear (36);
the below of movable plate (30) is provided with sleeve pipe (37), and fixed axle (38) pass sleeve pipe (37), sleeve pipe (37) with fixed axle (38) sliding connection, fixed axle (38) both ends with shell (14) inner wall pass through supporting seat (39) with the interior wall connection of shell (14), be provided with sliding sleeve (40) of vertical direction on the outer wall of sleeve pipe (37), slide bar (41) one end with movable plate (30) are connected, slide bar (41) other end passes sliding sleeve (40), sleeve pipe (37) below is provided with brush (42), brush (42) with sliding sleeve (40) are connected through second connecting rod (43), brush (42) can with dust screen (18) contact.
2. The package structure of surface acoustic wave filter according to claim 1, wherein the sealing plate (4) is bonded to the top end of the housing (2) by glue.
3. The packaging structure of the surface acoustic wave filter according to claim 1, wherein a circular ring (6) is arranged at the top end of the housing (2), a cover (7) is connected to the circular ring (6) in a threaded manner, a through hole (8) is arranged on the cover (7), and the terminal (5) penetrates through the through hole (8).
4. The SAW filter package structure of claim 1, wherein the first vent hole (9), the second vent hole (10), the pilot hole (11), the spring (12), the stopper (13), and the press rod (15) are symmetrically arranged in another group with respect to a vertical center line of the opening (3).
5. An encapsulation structure of a surface acoustic filter according to claim 1, characterized in that a base (16) is provided at the bottom end of the housing (14).
6. The package structure of surface acoustic wave filter according to claim 1, wherein a temperature sensor (45) is disposed in the housing (14), a control chip (44) is disposed in the housing (14), the temperature sensor (45) is electrically connected to the control chip (44), and the control chip (44) is electrically connected to the motor (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210119568.XA CN114157262B (en) | 2022-02-09 | 2022-02-09 | Packaging structure of surface acoustic wave filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210119568.XA CN114157262B (en) | 2022-02-09 | 2022-02-09 | Packaging structure of surface acoustic wave filter |
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| CN114157262A CN114157262A (en) | 2022-03-08 |
| CN114157262B true CN114157262B (en) | 2022-05-10 |
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| CN115326738A (en) * | 2022-10-17 | 2022-11-11 | 北京乐氏联创科技有限公司 | High-temperature infrared gas analyzer |
| CN115632631B (en) * | 2022-12-08 | 2023-04-25 | 深圳新声半导体有限公司 | Film acoustic wave filter with good heat dissipation effect |
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