CN212660141U - Packaging structure of cylindrical crystal oscillator fixed by through hole welding pad - Google Patents
Packaging structure of cylindrical crystal oscillator fixed by through hole welding pad Download PDFInfo
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- CN212660141U CN212660141U CN202021626062.0U CN202021626062U CN212660141U CN 212660141 U CN212660141 U CN 212660141U CN 202021626062 U CN202021626062 U CN 202021626062U CN 212660141 U CN212660141 U CN 212660141U
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Abstract
The utility model discloses a packaging structure of fixed cylindrical crystal oscillator of through-hole pad among the PCB design technical field is equipped with first pad on the PCB board, the pin and the first pad welding of cylindrical crystal oscillator, its characterized in that still are equipped with the second pad on the PCB board, and the inside of second pad is equipped with the second through-hole, and the main part surface cover of cylindrical crystal oscillator has the mounting: and two ends of the fixing piece are welded on the second bonding pad, or two ends of the fixing piece are fixed together after penetrating through the second through hole. The utility model discloses well cylindrical crystal oscillator's upper and lower both ends all can obtain fixedly, not only can reduce the vertical space that cylindrical crystal oscillator occupy, also can place cylindrical crystal oscillator simultaneously and receive external influence and produce vibrations at the during operation, prevent its fracture that rocks pin position and lead to, guarantee the job stabilization nature of device, increase of service life.
Description
Technical Field
The utility model relates to a PCB designs technical field, specific saying so relates to a packaging structure of fixed cylindrical crystal oscillator of through-hole pad.
Background
Pcb (printed Circuit board), also called printed Circuit board, is an important electronic component, which is used as a support for electronic components and a carrier for electrical connection of electronic components. A crystal oscillator (collectively referred to as a crystal oscillator) plays an important role in the design process of a PCB as a common clock element, and is widely applied to various oscillating circuits such as color televisions, computers, remote controllers, and the like, and in communication systems for a frequency generator, generating a clock signal for data processing equipment, and providing a reference signal for a specific system.
The crystal oscillators are classified according to their shapes, and include an insert crystal oscillator in which a cylindrical crystal oscillator is one of the larger branches, and a patch crystal oscillator. The fixing mode of the cylindrical crystal oscillator on the PCB board is as follows: the pins of the cylindrical crystal oscillator are inserted into the through holes of the PCB and fixedly connected with the through hole welding pads through soldering tin, so that the cylindrical crystal oscillator can be fixed and can be electrically connected.
However, the main body of the cylindrical crystal oscillator is cylindrical and has a long length, and the height of the whole PCB electronic component is high due to the fact that the cylindrical crystal oscillator is vertically erected on the PCB. In addition, the center of gravity of the cylindrical crystal oscillator is high, so that the center of gravity is unstable, the bottom of the cylindrical crystal oscillator can be fixed only after welding, the top of the cylindrical crystal oscillator is not fixed with a PCB, the stability of the whole cylindrical crystal oscillator is poor, and the working of the whole crystal oscillator and the service life of devices can be influenced when the devices run. In some traditional pasting and fixing modes, the adhesion degree is poor, and the pasting part is easy to fall off under the influence of operation heating of components.
The above-mentioned drawbacks, worth improving.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, the utility model provides a packaging structure of fixed cylindrical crystal oscillator of through-hole pad.
The utility model discloses technical scheme as follows:
the utility model provides a packaging structure of fixed cylindrical crystal oscillator of through-hole pad, is equipped with first pad on the PCB board, first through-hole has been seted up to the inboard of first pad, and the pin of cylindrical crystal oscillator is inserted in the first through-hole, and with first pad welding, its characterized in that, still be equipped with the second pad on the PCB board, the inside of second pad is equipped with the second through-hole, the main part surface cover of cylindrical crystal oscillator has the mounting:
and two ends of the fixing piece are welded on the second bonding pad, or two ends of the fixing piece penetrate through the second through hole and then are fixed together.
According to the above scheme the utility model discloses, its characterized in that, the second pad is two, two the second pad distribute in the left and right sides that the position was emptyd to cylindrical crystal oscillator.
Further, the distance between the inner side edges of the two second bonding pads is equal to the diameter of the cylindrical crystal oscillator.
Further, the connecting line of the two second bonding pads is parallel to the connecting line between the two first bonding pads.
Further, in the projection area of the cylindrical crystal oscillator, the connecting line of the two second bonding pads is positioned at one end far away from the first bonding pad.
Furthermore, in the projection area of the cylindrical crystal oscillator, the connecting line of the two second bonding pads is positioned at the position of one third of one end far away from the first bonding pad.
According to above-mentioned scheme the utility model discloses, its characterized in that, the second through-hole with the second pad is circular.
Further, the size of the second through hole is the same as the size of the first through hole, and the size of the second pad is the same as the size of the first pad.
According to above-mentioned scheme the utility model discloses, its characterized in that, the second through-hole with the second pad is the oblong.
Further, the second through hole has a length of 120 mils and a width of 40 mils.
According to above scheme the utility model discloses, its characterized in that, the mounting is the wire, the wire cover is in cylindrical crystal oscillator's surface, its both ends welding are in on the second pad.
According to the above scheme the utility model discloses, its characterized in that, the mounting is the ribbon, the ribbon cover is in cylindrical crystal oscillator's surface, its both ends are passed bind together behind the second through-hole.
According to the above scheme the utility model discloses, a serial communication port, be equipped with the silk screen printing frame on the PCB board, cylindrical crystal oscillator falls into after empting in the silk screen printing frame.
Furthermore, the area of the screen printing frame is larger than the projection area of the cylindrical crystal oscillator after the cylindrical crystal oscillator is toppled.
Furthermore, the edge of the silk screen frame is flush with the outer edge of the first bonding pad.
According to the above scheme the utility model discloses, its beneficial effect lies in, the utility model discloses well cylindrical crystal oscillator lower extreme is fixed on the first pad of PCB board, and its upper end is fixed in the second pad department of PCB board through the mounting for cylindrical crystal oscillator's upper and lower both ends all can be fixed, not only can reduce the vertical space that cylindrical crystal oscillator occupy, also can place cylindrical crystal oscillator simultaneously and receive external influence and produce vibrations at the during operation, prevent that it from rocking pin position and the fracture that leads to, guarantee the job stabilization nature of device, increase of service life.
Drawings
FIG. 1 is a schematic structural diagram of a cylindrical crystal oscillator.
Fig. 2 is a schematic structural diagram of the first embodiment.
Fig. 3 is a schematic structural diagram of the second embodiment.
In the figure, 10-cylindrical crystal oscillator; 11-pin;
21-a first via; 22-a first pad;
31-a second via; 32-a second pad; 33-silk screen frame.
Detailed Description
The invention is further described with reference to the following figures and embodiments:
as shown in fig. 1 to fig. 3, in a package structure of a through hole pad fixed cylindrical crystal oscillator, a PCB is provided with a first pad 22, and a pin 11 of the cylindrical crystal oscillator 10 is soldered to the first pad 22. In the via hole design, a first through hole 21 is opened on the inner side of the first pad 22, and the pin 11 of the cylindrical crystal oscillator 10 is inserted into the first through hole 21 and welded with the first pad 22.
In order to fix the upper end of the cylindrical crystal oscillator, the cylindrical crystal oscillator is fixed on the PCB after being bent. The utility model discloses utilize the mounting to fix cylindrical crystal oscillator, make its upper and lower both ends all obtain fixedly, not only can reduce the vertical space that cylindrical crystal oscillator occupy, also can place cylindrical crystal oscillator simultaneously and receive external influence and produce vibrations at the during operation, prevent its fracture that rocks the pin position and lead to, guarantee the job stabilization nature of device, increase of service life.
As shown in fig. 1, each lead 11 of the cylindrical crystal oscillator 10 is provided with two bends, so that each lead 11 can not only be fully contacted and welded with the first pad 22, but also be convenient for the toppling and fixing of the cylindrical crystal oscillator 10.
As shown in fig. 2 and 3, a second bonding pad 32 is disposed on the PCB, a second through hole 31 is disposed inside the second bonding pad 32, and the through hole bonding pad is designed such that the cylindrical crystal oscillator can be fixed by a fixing member welded to the second bonding pad 32, or fixed by a fixing member passing through the second through hole 31. The fixing mode of the fixing piece for fixing the cylindrical crystal oscillator comprises the following steps: the mounting cover is on cylindrical crystal oscillator's main part surface, and its both ends lug weld is on second pad 32, and then fixes cylindrical crystal oscillator, also can pass second through-hole 31 after-fixing with the mounting both ends together to the realization is to cylindrical crystal oscillator's is fixed.
For the fixing purpose of the fixing member, there are two second pads 32, and the two second pads 32 are distributed on the left and right sides of the inclined position of the cylindrical crystal oscillator. In one embodiment, the fixing member is a metal wire, which is sleeved on the surface of the cylindrical crystal oscillator, and the two ends of the metal wire are welded on the second bonding pads 32; in another embodiment, the fixing member is a ribbon, and the ribbon is sleeved on the surface of the cylindrical crystal oscillator, and two ends of the ribbon are respectively bound together after passing through the second through hole 31.
The utility model discloses in, the interval between the inboard edge of two second pads 32 equals with the main part diameter size of cylindrical crystal oscillator, and the projection area edge coincidence after the inboard edge of two second pads 32 emptys with cylindrical crystal oscillator promptly. Therefore, even if the cylindrical crystal oscillator is inclined due to different welding heights of the pins, the fixing piece can stably penetrate through the surface of the cylindrical crystal oscillator, and the phenomenon that the fixing piece cannot be fixed due to the fact that the cylindrical crystal oscillator is inclined is avoided.
The connecting line of the two second bonding pads 32 is parallel to the connecting line between the two first bonding pads 22, so that the inclined position of the cylindrical crystal oscillator is more convenient for the fixing piece to bypass the surface of the cylindrical crystal oscillator.
In the projection area of the cylindrical crystal oscillator, the connection line of the two second pads 32 is located at one end far from the first pad 22. In the present embodiment, the connecting line of the two second pads 32 is located at a position one third away from one end of the first pad 22, i.e. the connecting line of the second pads 32 is located at a distance L from the outer end of the projected position of the cylindrical crystal oscillator, and the connecting line is located at a distance 2L from the inner end of the projected position of the cylindrical crystal oscillator. The position design of second pad 32 and second via hole 31 can be fixed cylindrical crystal oscillator upper end position, and the pin of cooperation cylindrical crystal oscillator is fixed simultaneously for cylindrical crystal oscillator wholly obtains more stable connection.
The shapes of the second through hole 31 and the second pad 32 in the present invention can be selected as needed.
In the embodiment shown in fig. 2, the second via hole 31 and the second pad 32 are both circular, wherein the size of the second via hole 31 is the same as the size of the first via hole 21, and the size of the second pad 32 is the same as the size of the first pad 22. In the embodiment shown in fig. 3, the second via hole 31 and the second pad 32 are both oblong, wherein the second via hole 31 has a length of 120 mils and a width of 40 mils. The shape of the embodiment shown in fig. 3 is selected to facilitate welding of the wires or binding of the straps.
Be equipped with the silk screen printing frame 33 that is used for sign cylindrical crystal oscillator position on the PCB board, the cylindrical crystal oscillator falls into in silk screen printing frame 33 after toppling over.
The area of the screen printing frame 33 is larger than the projection area of the cylindrical crystal oscillator after the cylindrical crystal oscillator is toppled. When the cylindrical crystal oscillator is inclined by the fixed height difference of the two pins instead of the completely vertical state, the cylindrical crystal oscillator can fall into the screen printing frame 33. The edge of the screen printing frame 33 in this embodiment is flush with the outer edge of the first pad 22, which not only reduces the space of the PCB board occupied by the screen printing frame 33, but also fully enlarges the display area of the screen printing frame 33.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
The above exemplary description of the present invention is made in conjunction with the accompanying drawings, and it is obvious that the present invention is not limited by the above manner, and various improvements made by the method concept and technical solution of the present invention or by directly applying the concept and technical solution of the present invention to other occasions without improvement are all within the protection scope of the present invention.
Claims (10)
1. The utility model provides a through-hole pad fixed cylindrical crystal oscillator's packaging structure, be equipped with first pad on the PCB board, cylindrical crystal oscillator's pin with first pad welding, a serial communication port, still be equipped with the second pad on the PCB board, the inside of second pad is equipped with the second through-hole, cylindrical crystal oscillator's main part surface cover has the mounting:
and two ends of the fixing piece are welded on the second bonding pad, or two ends of the fixing piece penetrate through the second through hole and then are fixed together.
2. The package structure of the through hole bonding pad fixed cylindrical crystal oscillator according to claim 1, wherein the number of the second bonding pads is two, and the two second bonding pads are distributed on the left side and the right side of the inclined position of the cylindrical crystal oscillator.
3. The package structure of the through hole pad fixed cylindrical crystal oscillator according to claim 2, wherein the connection line of the two second pads is located at one end far away from the first pad in the projection area of the cylindrical crystal oscillator.
4. The package structure of the through hole pad fixed cylindrical crystal oscillator as claimed in claim 3, wherein the connection line of the two second pads is located at a third position of one end far away from the first pad in the projection area of the cylindrical crystal oscillator.
5. The package structure of the through hole pad fixed cylindrical crystal oscillator according to claim 1, wherein the second through hole and the second pad are both circular.
6. The package structure of the through hole pad fixed cylindrical crystal oscillator according to claim 1, wherein the second through hole and the second pad are both oblong.
7. The package structure of the through hole pad fixed cylindrical crystal oscillator as claimed in claim 6, wherein the second through hole has a length of 120mil and a width of 40 mil.
8. The package structure of the through hole pad fixed cylindrical crystal oscillator of claim 1, wherein the fixing member is a metal wire, the metal wire is sleeved on the surface of the cylindrical crystal oscillator, and both ends of the metal wire are welded on the second pads.
9. The packaging structure of the through hole bonding pad fixed cylindrical crystal oscillator according to claim 1, wherein the fixing member is a ribbon, the ribbon is sleeved on the surface of the cylindrical crystal oscillator, and two ends of the ribbon are bound together after passing through the second through hole.
10. The structure for packaging a cylindrical crystal oscillator fixed by a through hole bonding pad as claimed in claim 1, wherein a screen printing frame is arranged on the PCB, and the cylindrical crystal oscillator falls into the screen printing frame after being toppled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021626062.0U CN212660141U (en) | 2020-08-07 | 2020-08-07 | Packaging structure of cylindrical crystal oscillator fixed by through hole welding pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021626062.0U CN212660141U (en) | 2020-08-07 | 2020-08-07 | Packaging structure of cylindrical crystal oscillator fixed by through hole welding pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212660141U true CN212660141U (en) | 2021-03-05 |
Family
ID=74770273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021626062.0U Active CN212660141U (en) | 2020-08-07 | 2020-08-07 | Packaging structure of cylindrical crystal oscillator fixed by through hole welding pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212660141U (en) |
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2020
- 2020-08-07 CN CN202021626062.0U patent/CN212660141U/en active Active
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