CN219611742U

CN219611742U - Crystal oscillator with dustproof function

Info

Publication number: CN219611742U
Application number: CN202320073489.XU
Authority: CN
Inventors: 向前; 余旖旎
Original assignee: Shenzhen Bofangda Technology Co ltd
Current assignee: Shenzhen Bofangda Technology Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-08-29
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a crystal oscillator with a dustproof function, which comprises a shell covered on an oscillator body, wherein a first side surface of the shell is flush with a first side surface of the oscillator body, and the crystal oscillator comprises: the second side surface and the third side surface of the shell are symmetrically provided with air inlets, the fourth side surface of the shell is provided with air outlets, fans are rotationally arranged in the air outlets, and the two air inlets are respectively communicated with the air outlets through a first air channel and a second air channel to form a heat dissipation air channel; a dust collecting box is arranged in the air outlet, two ends of the dust collecting box are communicated to form a flow cavity, and a filter screen is arranged at a first end opening of the flow cavity. The crystal oscillator with the dustproof function utilizes the shell, the dust collecting box and the fan which are arranged on the shell, and when the shell and the oscillator body are arranged on the circuit board, the shell completely covers the oscillator body, so that dust is prevented from falling into the oscillator body to damage the oscillator body.

Description

Crystal oscillator with dustproof function

Technical Field

The utility model relates to the technical field of crystal oscillators, in particular to a crystal oscillator with a dustproof function.

Background

The constant temperature control crystal oscillator is the crystal oscillator with the highest frequency stability and accuracy at present, and has very good performances in the aspects of aging rate, temperature stability, long-term stability, short-term stability and the like, so the constant temperature control crystal oscillator is often used as a precise time-frequency signal source and widely applied to electronic instruments such as a global positioning system, communication, metering, telemetry and remote control, frequency spectrum and network analyzers and the like.

According to publication number CN201584944U, publication (bulletin) day: 2010.09.15 the disclosed constant temperature control crystal oscillator comprises a crystal oscillation circuit, a temperature control circuit and a heating circuit, wherein the heating circuit is electrically connected with the crystal oscillation circuit and the temperature control circuit, the crystal oscillation circuit comprises a crystal oscillator and a heating device, the crystal oscillator comprises an oscillator shell, a base, pins, a wafer and a penetrating piece, the wafer is arranged in a cavity formed by the oscillator shell and the base, the pins are connected with the wafer and penetrate out of the base from the cavity, a through hole communicated with the cavity is formed in the oscillator shell, the penetrating piece is hermetically arranged in the through hole, the heating device generates electromagnetic waves, and the electromagnetic waves penetrate through the penetrating piece and irradiate on the wafer. The constant temperature control crystal oscillator has the characteristics of low power consumption and fast entering a stable state.

In the prior art including the above-mentioned patent, the oscillator housing is used to cover the wafer on the base and the penetrating piece, but since dust easily falls into the gap between the oscillator housing and the base, the crystal oscillator is damaged.

Disclosure of Invention

The utility model aims to provide a crystal oscillator with a dustproof function, which is used for solving the problem that dust easily falls into a gap between an oscillator shell and a base to cause damage to the crystal oscillator.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a crystal oscillator with dustproof function, includes the oscillator body, the first side of oscillator body is provided with the grafting foot, still including the shade in casing on the oscillator body, the first side of casing with the first side of oscillator body looks parallel and level, wherein:

air inlets are symmetrically formed in the second side face and the third side face of the shell, the air inlets are close to the first side face of the shell, an air outlet is formed in the fourth side face of the shell, a fan is rotatably arranged in the air outlet, and the two air inlets are communicated with the air outlet through a first air channel and a second air channel respectively to form a heat dissipation air channel;

the dust collecting box is arranged in the air outlet, two ends of the dust collecting box are communicated to form a flow cavity, a filter screen is arranged at a first end opening of the flow cavity, and a second end of the flow cavity is communicated with the air outlet.

Preferably, heating pipes for heating the oscillator body are symmetrically arranged in the shell, and first sides of the two heating pipes are respectively positioned in the first air duct and the second air duct.

Preferably, a protruding portion is arranged at the joint of the first air duct and the second air duct, the first side face and the second side face of the protruding portion are both concave arc-shaped to form a sharp angle end, and the sharp angle end faces the axis of the air outlet.

Preferably, the dust collecting box is symmetrically provided with sliding parts, the sliding parts are slidably arranged in the air outlet, and the sliding parts are driven to slide so that the dust collecting box extends out of the outer side of the shell.

Preferably, the housing is a stainless steel member.

Preferably, the dust collecting box is a stainless steel piece.

In the technical scheme, the crystal oscillator with the dustproof function has the following beneficial effects: utilize casing and dust-collecting box and fan that set up on it, the bottom surface of casing and the bottom surface parallel and level of oscillator body, when casing and oscillator body are installed on the circuit board, the casing is with the complete shade of oscillator body, avoid the dust to fall into the oscillator body and cause its damage, the air inlet of secondly casing is located its both sides, the air outlet up, it inhales from the air inlet and blows out from the air outlet through first wind channel and second wind channel to order about the wind when fan rotates, dispel the heat to the oscillator body, and the suction that the air inlet department produced can also inhale the dust that falls down between casing both sides and the circuit board and blow into in the dust-collecting box from the air outlet and collect, further avoid the dust to fall into the oscillator body and cause its damage.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a general cross-sectional view of a structure provided by an embodiment of the present utility model;

fig. 2 is a schematic enlarged view of a portion of a general body according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a housing; 11. an air inlet; 12. an air outlet; 13. a boss; 14. a first air duct; 15. a second air duct; 2. an oscillator body; 3. heating pipes; 4. a dust collection box; 41. a flow chamber; 42. a sliding part; 5. a fan; 6. and (5) a filter screen.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

As shown in fig. 1-2, a crystal oscillator with dustproof function includes an oscillator body 2, a first side of the oscillator body 2 is provided with a socket, and further includes a housing 1 covered on the oscillator body 2, the first side of the housing 1 is flush with the first side of the oscillator body 2, wherein: the second side surface and the third side surface of the shell 1 are symmetrically provided with air inlets 11, the air inlets 11 are close to the first side surface of the shell 1, the fourth side surface of the shell 1 is provided with air outlets 12, fans 5 are rotationally arranged in the air outlets 12, and the two air inlets 11 are respectively communicated with the air outlets 12 through a first air duct 14 and a second air duct 15 to form a heat dissipation air duct; the inside of the air outlet 12 is provided with a dust collecting box 4, two ends of the dust collecting box 4 are communicated to form a flow cavity 41, a first end opening of the flow cavity 41 is provided with a filter screen 6, and a second end of the flow cavity 41 is communicated with the air outlet 12.

Specifically, as shown in fig. 1, the bottom surface of the casing 1 is a first side surface, the left side surface is a second side surface, the right side surface is a third side surface, the top surface is a fourth side surface, the left end of the flow cavity 41 is a first end, the right end is a second end, air inlets 11 are respectively formed at one ends of the left side surface and the right side surface of the casing 1, which are close to the lower side, air outlets 12 are formed on the top surface of the casing 1, the air inlets 11 on the left side are communicated with the air outlets 12 through L-shaped first air channels 14, the air inlets 11 on the right side are communicated with the air outlets 12 through L-shaped second air channels 15, the ends of the first air channels 14 and the second air channels 15 are also communicated with each other, a fan 5 is rotationally arranged at the air outlets 12, the fan 5 is driven by a micro motor fixed in the casing 1, the outlet ends of the air outlets 12 are slidingly arranged at the dust collecting boxes 4, the flow chamber 41 right-hand member and the air outlet 12 of dust-collecting box 4 are linked together, the left end of flow chamber 41 is provided with filter screen 6, and the bottom surface of casing 1 and the bottom surface parallel and level of oscillator body 2, when casing 1 and oscillator body 2 are installed on the circuit board, casing 1 covers oscillator body 2 completely, avoid the dust to fall into oscillator body 2 and cause its damage, and when fan 5 is rotatory, fan 5 drives the wind and blows out from air outlet 12 from air inlet 11 suction and through first wind channel 14 and second wind channel 15, in order to dispel the heat to oscillator body 2, and the suction that the air inlet 11 department produced can also inhale the dust that falls down between casing 1 both sides and the circuit board and blow into dust-collecting box 4 from air outlet 12 in, further avoid the dust to fall into oscillator body 2 and cause its damage.

In the above technical scheme, utilize casing 1 and dust-collecting box 4 and fan 5 that set up on it, the bottom surface of casing 1 is parallel and level with the bottom surface of oscillator body 2, when casing 1 and oscillator body 2 install on the circuit board, casing 1 is with oscillator body 2 complete shade, avoid the dust to fall into oscillator body 2 and cause its damage, secondly, the air inlet 11 of casing 1 is located its both sides, the air outlet 12 is up, it is inhaled from air inlet 11 and is blown out from air outlet 12 through first wind channel 14 and second wind channel 15 to order to dispel the heat to oscillator body 2 when fan 5 rotates, and the suction that the air inlet 11 department produced can also inhale the dust that falls down between casing 1 both sides and the circuit board and blow into dust-collecting box 4 from air outlet 12 in, further avoid the dust to fall into oscillator body 2 and cause its damage.

As a further provided embodiment of the present utility model, the heating pipes 3 for heating the oscillator body 2 are symmetrically arranged in the housing 1, and the first sides of the two heating pipes 3 are respectively located in the first air duct 14 and the second air duct 15.

Specifically, as shown in fig. 1, the heating pipe 3 is symmetrically disposed in the casing 1, one side of the heating pipe 3 facing away from the oscillator body 2 is a first side, in some cases, in order to make the oscillator body 2 have better thermal stability, temperature compensation is required, if the environmental temperature is too low, the heating pipe 3 starts to heat the oscillator body 2 to perform temperature compensation, but if the environmental temperature is too high, the fan 5 rotates to enable air to be sucked from the air inlet 11 and blown out from the air outlet 12 through the first air duct 14 and the second air duct 15, so as to dissipate heat of the oscillator body 2, and the heating pipe 3 is a heat source, part of the two heating pipes is located in the first air duct 14 and the second air duct 15, and when the air passes through the first air duct 14 and the second air duct 15, the air directly passes through the surface of the heating pipe 3 to dissipate heat of the heat source, so that the overall heat dissipation efficiency is improved.

As a further provided embodiment of the present utility model, the junction of the first air duct 14 and the second air duct 15 is provided with a protruding portion 13, and the first side and the second side of the protruding portion 13 are both concave arc-shaped to form a pointed end, and the pointed end faces the axis of the air outlet 12.

Specifically, as shown in fig. 1, the connection part of the first air duct 14 and the second air duct 15 is provided with a protruding part 13, the upper left surface of the protruding part 13 is a first side surface, the upper right surface is a second side surface, the first side surface and the second side surface of the protruding part 13 are both concave arc-shaped to form sharp angle ends, when the fans 5 of the first air duct 14 and the second air duct 15 drive the air to flow towards the air outlet 12, the air in the first air duct 14 flows along the concave arc of the first side surface of the protruding part 13 and changes the direction to be consistent with the axial direction of the air outlet 12, the air in the second air duct 15 flows along the concave arc of the second side surface of the protruding part 13 and changes the direction to be consistent with the axial direction of the air outlet 12, the flow directions of the two concave arc surfaces on the protruding part 13 can change the air flow directions of the first air duct 14 and the second air duct 15, the air flow directions of the two air flows in the first air duct 14 and the second air duct 15 are prevented from being consistent with the axial direction of the air outlet 12, the air speed of the two air flows in the first air duct 14 and the second air duct 15 are prevented from being located at the position of the air duct 14 and the air duct 15, and the two air ducts are prevented from being connected to each other, and the heat dissipation efficiency is prevented from being reduced.

As a further provided embodiment of the present utility model, the dust collecting box 4 is symmetrically provided with a sliding portion 42, the sliding portion 42 is slidably disposed in the air outlet 12, and the sliding portion 42 is driven to slide so that the dust collecting box 4 extends out of the casing 1.

Specifically, as shown in fig. 2, the dust collecting box 4 is symmetrically provided with a sliding part 42, the sliding part 42 is located in the air outlet 12 to slide so that the dust collecting box 4 extends out of the casing 1, and the dust collecting box 4 can be taken out by sliding through the sliding part 42 to clean dust in the dust collecting box 4, so that the dust collecting box is convenient to maintain.

As a further provided embodiment of the present utility model, the housing 1 is a stainless steel member.

Specifically, the casing 1 made of stainless steel has relatively excellent hardness, compressive strength and relatively good corrosion resistance, the service life of the casing 1 can be prolonged, and secondly, the casing 1 made of stainless steel is covered on the oscillator body 2 to play a role of an electrostatic protection cover, so that the oscillator body 2 is prevented from being damaged due to electrostatic influence.

As a further provided embodiment of the present utility model, the dust collecting box 4 is a stainless steel member.

Specifically, the dust box 4 made of stainless steel has excellent hardness, compressive strength and corrosion resistance, and the service life of the dust box 4 can be prolonged.

Working principle: when the housing 1 and the oscillator body 2 are mounted on the circuit board, the housing 1 completely shields the oscillator body 2, if the ambient temperature is too low, the heating pipe 3 starts to heat the oscillator body 2 for temperature compensation, but if the ambient temperature is too high, the micro motor drives the fan 5 to rotate, the fan 5 rotates to suck air into the first air duct 14 and the second air duct 15 from the air inlet 11, the air in the first air duct 14 flows along the concave arc of the first side surface of the protruding part 13 and changes direction to be consistent with the axial direction of the air outlet 12, the air in the second air duct 15 flows along the concave arc of the second side surface of the protruding part 13 and changes direction to be consistent with the axial direction of the air outlet 12, then the air is discharged to the outside through the air outlet 12 and the flow cavity 41 of the dust collecting box 4 for heat dissipation, meanwhile, the suction force generated at the air inlet 11 can also collect dust suction air falling between the two sides of the housing 1 and the circuit board from the flow cavity 41 of the air outlet 12 into the dust collecting box 4, the dust is intercepted by the filter screen 6 in the dust collecting box 4, the dust is temporarily stored in the dust collecting box 4, and then the dust box 4 can be taken out by the sliding box 42 to clean dust in the dust collecting box 4.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a crystal oscillator with dustproof function, includes oscillator body (2), the first side of oscillator body (2) is provided with the grafting foot, its characterized in that still include mask in casing (1) on oscillator body (2), the first side of casing (1) with the first side of oscillator body (2) looks parallel and level, wherein:

air inlets (11) are symmetrically formed in the second side face and the third side face of the shell (1), the air inlets (11) are close to the first side face of the shell (1), an air outlet (12) is formed in the fourth side face of the shell (1), a fan (5) is rotationally arranged in the air outlet (12), and the two air inlets (11) are communicated with the air outlet (12) through a first air duct (14) and a second air duct (15) respectively to form a heat dissipation air duct;

the dust collection device is characterized in that a dust collection box (4) is arranged in the air outlet (12), two ends of the dust collection box (4) are communicated to form a flow cavity (41), a filter screen (6) is arranged at an opening of a first end of the flow cavity (41), and a second end of the flow cavity (41) is communicated with the air outlet (12).

2. A crystal oscillator with dustproof function according to claim 1, characterized in that heating pipes (3) for heating the oscillator body (2) are symmetrically arranged in the shell (1), and first sides of the two heating pipes (3) are respectively positioned in the first air duct (14) and the second air duct (15).

3. A crystal oscillator with dustproof function according to claim 1, characterized in that a protruding part (13) is arranged at the joint of the first air duct (14) and the second air duct (15), the first side surface and the second side surface of the protruding part (13) are both concave arc-shaped to form a sharp angle end, and the sharp angle end faces the axis of the air outlet (12).

4. A crystal oscillator with dustproof function according to claim 1, wherein the dust collecting box (4) is symmetrically provided with sliding parts (42), the sliding parts (42) are slidably arranged in the air outlet (12), and the sliding parts (42) are driven to slide so that the dust collecting box (4) extends out of the shell (1).

5. A crystal oscillator with dust-proof function according to claim 1, characterized in that the housing (1) is a stainless steel piece.

6. A crystal oscillator with dust-proof function according to claim 1, characterized in that the dust box (4) is a stainless steel piece.