CN217345295U - A hand tool for BGA pin is changed - Google Patents
A hand tool for BGA pin is changed Download PDFInfo
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- CN217345295U CN217345295U CN202220420918.1U CN202220420918U CN217345295U CN 217345295 U CN217345295 U CN 217345295U CN 202220420918 U CN202220420918 U CN 202220420918U CN 217345295 U CN217345295 U CN 217345295U
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Abstract
The utility model discloses a hand tool for BGA pin replacement, including nib, casing, metal pin and button, fixed connection between nib and the casing, the passageway is formed in nib and the casing, the metal pin is wholly installed in the passageway, the button is located the casing opening part, the certain length part of button extends to the outside of the casing; the two ends of the metal pin are respectively provided with a contact end and a stop block end, the contact end is positioned at the opening of the pen point, the stop block end is tightly attached to the button, the metal pin is sequentially sleeved with a blocking block, a magnet block and a spring, the front end of the blocking block abuts against the inner wall of the front end of the pen point, and the rear end of the spring abuts against the stop block end; the metal pin is made of a metal material capable of being magnetically adsorbed. Adopt the utility model discloses when changing the BGA pin, convenient and fast can accurately extract the pin that needs to be changed during the change, and when daily not using, the casing that also has the self preservation and protects is deposited.
Description
Technical Field
The utility model relates to a Ball Grid Array (BGA) packaging technology, concretely relates to hand tool for BGA pin is changed.
Background
BGA packages are a method of fully (or partially) encapsulating pins in a grid-like arrangement on a surface, in which I/O terminals of the BGA package are distributed under the package in an array of spherical or columnar solder joints, and are ball-connected modules. The BGA leads are steel, which may be bent, contaminated or damaged in an hvm (high Volume manufacturing) environment, and often need to be manually replaced by an operator.
The pins of the BGA are generally pin-shaped, and when the pins are replaced, an operator usually clamps the tops of the pins by using tweezers and replaces the pins after the pins are pulled out. Because the ball pitch of the BGA is usually less than 0.4mm, the pin pitch is less than 200um, and the operation space is very limited due to the excessively small pitch, the top of the pin is difficult to clamp accurately and/or the pin to be replaced is accurately pulled out; the pins are easily torn in the process of pulling out, or the pins beside the pins are easily abraded.
For operators, if the experience is insufficient, the damaged pins cannot be accurately and quickly pulled out, and then replacement is completed; for operators with replacement experience, the operators need to take the angle, force, proficiency of tool use and the like into consideration during operation to finish accurate pulling. But even an experienced operator needs to perform the replacement for a long time.
Therefore, a replacing tool convenient for manually and accurately pulling out the pins needs to be designed, the operating experience of the traditional replacing mode is not needed for operating personnel, and the replacing can be realized by pulling out the pins through the tool.
Disclosure of Invention
In order to overcome the defect that exists among the above-mentioned prior art and not enough, the utility model provides a hand tool for BGA pin is changed under the limited condition in space, can effectively, swiftly, easily extract the pin that needs to be changed.
A manual tool for BGA pin replacement comprises a pen point, a shell, a metal pin and a button, wherein the pen point and the shell are fixedly connected, a channel is formed in the pen point and the shell, the metal pin is integrally installed in the channel, the button is located at an opening of the shell, a part of the button with a certain length extends out of the shell, pressing of an operator is facilitated, and meanwhile, the diameter of the end part of the button located in the shell is larger than the diameter of the opening of the shell;
the two ends of the metal pin are respectively provided with a contact end and a stop block end, the contact end is positioned at the opening of the pen point, the stop block end is tightly attached to the button, the metal pin is sequentially sleeved with a blocking block, a magnet block and a spring, the front end of the blocking block abuts against the inner wall of the front end of the pen point, and the rear end of the spring abuts against the stop block end; when the button is pressed, the end of the stop block is pushed by the button, so that the metal pin integrally moves, the contact end is pushed out to the outside of the pen point, and the contact end can adsorb and pull out the pin to be replaced by utilizing the magnetism of the magnet block; when the button is released, the spring rebounds, the stop block end pushes the button to return to the original position, and the contact end is pulled back into the pen point; the metal pin is made of a material capable of being magnetically adsorbed.
For metal pins, steel pins may be used.
The further design of the blocking piece and the magnet piece is that: the inner diameter of the hollow part of the blocking block and the magnet block is matched with the outer diameter of the metal pin, and the metal pin can move in the hollow part of the blocking block and the magnet block.
The further design of the spring is:
the spring is a compression spring. When the button is pressed, the stop block end of the metal pin pushes the spring to compress towards the magnet block, and the contact end of the metal pin is gradually pushed out of the pen point. At this time, even if the center point of the metal pin subjected to the magnetic force is changed, it can be stabilized within the passage.
The areas of the contact surfaces of the spring and the magnet block are matched, so that the spring is positioned between the magnet block and the stop block end of the metal pin.
The outer diameter of the spring matches the inner diameter of the channel.
The front end of the spring is adsorbed on the magnet block, and due to the matching design of the outer diameter of the spring and the inner diameter of the channel, when the button is pressed down, the stop block end of the metal pin pushes the spring to compress towards the magnet block, and the contact end of the metal pin can be stably and slowly pushed out of the pen point.
Further designs for the metal pins are:
the surface area of the contact end is smaller than or equal to the surface area of the top of the pin, so that the contact end can accurately contact the top of the BGA pin to be replaced, and the BGA pin can be accurately pulled out by utilizing magnetism.
The metal pin may be in the form of a cylindrical pin, a rectangular parallelepiped, or a pin of another shape as a whole, provided that the surface area limitation is satisfied.
The contact end area may also be significantly smaller than the end area of the stop block, provided that the above surface area limitation is met, i.e. the metal pin may be nail-shaped or may be cone-shaped, with a nail-shaped, cone-shaped tip or apex serving as the contact end.
Synthesize above-mentioned design, the utility model discloses a concrete use as follows:
when the BGA pin needing to be replaced is found, an operator places the pen point above the BGA pin, presses the button, pushes the metal pin to move in the channel, the contact end of the metal pin is pushed out to the outer side of the pen point, the contact end can accurately touch the pin, the pin is adsorbed by the magnetism of the magnet block, and the pin can be quickly and successfully pulled out. After the replacement, the button is loosened, the compressed spring rebounds to the original position to drive the button to recover to the original position, so that the metal pin integrally returns to the channel, the contact end of the metal pin can be protected in a daily mode, the contact end cannot be damaged, and the contact end can be prevented from damaging operators or other parts and equipment on site.
Further ergonomic designs for the buttons are:
the top of the button can be provided with a first arc structure suitable for the thumb of a human body, so that the thumb of an operator can press the button conveniently.
The technical scheme of the utility model, the advantage that has includes:
(1) the utility model is designed as a magnetic tool with a core structure, and the BGA pin to be replaced is magnetically adsorbed by a thin metal pin, so that the pin can be effectively and quickly pulled out, and the pin replacing speed is greatly improved;
(2) the utility model can utilize the magnetism of the magnet block to make the metal pin have magnetism through the design of the button, the metal pin and the magnet block, and when the metal pin is pushed out of the pen head, the pin to be replaced can be adsorbed;
(3) the utility model discloses utilize compression spring's design, can effectively realize the removal and the resilience of metal round pin in the passageway, after finishing using, the contact jaw of metal round pin returns in the nib promptly, can not cause the injury because of causing external object or operating personnel, overall structure is stable, and the security is high;
(4) the utility model has the advantages of simple structure, long service life, low manufacturing cost and use cost, no requirement for the space between the pins, and suitability for the replacement of various BGA pins with small and thin space;
(5) the utility model discloses can also be used to the change or the installation of other miniature metal parts.
Drawings
Fig. 1 is a schematic view of the exploded structure of the present invention.
Wherein the reference numerals are: 1-pen point, 2-block, 3-magnet block, 4-metal pin, 5-spring, 6-block end, 7-shell and 8-button.
Detailed Description
The technical solution of the present invention will be further elaborated with reference to the drawings attached to the specification.
Example 1
As shown in fig. 1, this embodiment has designed a hand tool for BGA pin replacement, including nib 1, casing 7, metal pin 4 and button 8, threaded connection between nib 1 and the casing 7, the passageway is formed in nib 1 and the casing 7, metal pin 4 is installed in the passageway as a whole, button 8 is located the opening part of casing 7, a certain length part of button 8 extends to the outside of casing 7, the operating personnel of being convenient for press, simultaneously, the tip diameter of button 8 that is located inside casing 7 is greater than the opening diameter of casing 7.
The both ends of metal round pin 4 are contact jaw and dog end 6 respectively, and the contact jaw is located the opening part of nib 1, and dog end 6 closely laminates with button 8, has cup jointed sprue 2, magnet piece 3, spring 5 on the metal round pin 4 in proper order, and the front end of sprue 2 is contradicted in the toper position inner wall of nib 1 front end, and the rear end of spring 5 is contradicted in dog end 6.
The metal pin 4 may be a steel pin.
In the embodiment, in the process that the button 8 is pressed, the stop block end 6 is pushed by the button 8, so that the metal pin 4 integrally moves, the contact end is pushed out to the outside of the pen point 1, and the contact end can adsorb and pull out the pin to be replaced by utilizing the magnetism of the magnet block 3; when the button 8 is loosened, the spring 5 rebounds, the stop block end 6 pushes the button 8 to return to the original position, and the contact end is timely pulled back into the pen point 1, so that the contact end body can be effectively protected, other parts can be prevented from being acted on, and the operation safety of an operator is improved.
Example 2
As shown in fig. 1, in example 1, the block 2 and the magnet block 3 each have a hollow columnar structure, the inner diameters of the hollow portions of the block 2 and the magnet block 3 are matched with the outer diameter of the metal pin 4, and the metal pin 4 is movable in the hollow portions of the block 2 and the magnet block 3.
Example 3
As shown in fig. 1, the spring 5 may be a compression spring based on embodiment 1 or 2. When the button 8 is pressed, the stop end 6 of the metal pin 4 pushes the spring 5 to compress towards the magnet block 3, and the contact end of the metal pin 4 is gradually pushed out of the pen point 1. At this time, even if the center point of the magnetic force applied to the metal pin 4 is changed, it can be stabilized in the passage.
Further: the contact surface areas of the spring 5 and the magnet block 3 are matched, so that the spring 5 can be positioned between the magnet block 3 and the stop block end 6 of the metal pin 4; at the same time, the outer diameter of the spring 5 can be designed to match the inner diameter of the channel.
Due to the matching design of the outer diameter of the spring 5 and the inner diameter of the channel, the front end of the spring 5 is adsorbed on the magnet block 3, when the button 8 is pressed down, the stop end 6 of the metal pin 4 pushes the spring 5 to compress towards the magnet block 3, and the contact end of the metal pin 4 can be stably and slowly pushed out of the pen point 1.
Example 4
As shown in fig. 1, on the basis of any of embodiments 1-3, the surface area of the contact end of the metal pin 4 can be smaller than or equal to the surface area of the top of the pin, so as to facilitate accurate contact with the top of the BGA pin to be replaced, and avoid contact with the adjacent pin due to too large surface area, and then accurately extract the pin by using magnetism.
The metal pin 4 may be a cylindrical pin, a rectangular parallelepiped, or a pin having another shape as a whole, provided that the above surface area limitation is satisfied.
The contact end area may also be significantly smaller than the stop end 6 area, i.e. the metal pin 4 may be nail-shaped or may be cone-shaped, with a nail-shaped, cone-shaped tip or apex as the contact end, provided that the above surface area limitations are met.
Example 5
As shown in fig. 1, on the basis of the foregoing embodiment, in order to better conform to the industrial design concept, the top of the button 8 may be provided with a first arc-shaped structure suitable for the thumb of a human body, so as to be convenient for the thumb of an operator to press.
By combining the above embodiments 1-5, the utility model has the following specific application:
when finding that the BGA pin needs to be replaced, an operator places the pen point 1 above the BGA pin, presses the button 8, the button 8 pushes the metal pin 4 to move in the channel, the contact end of the metal pin 4 is pushed out to the outer side of the pen point 1, the contact end can accurately touch the pin, the pin is attracted by the magnetism of the magnet block 3, and the pin can be quickly and successfully pulled out. After the replacement, the button 8 is loosened, the spring 5 rebounds to the original position to drive the button 8 to recover to the original position, the metal pin 4 integrally returns to the channel, the storage is convenient, and the contact end cannot be damaged.
The utility model discloses an overall specification, size and operation requirement can be according to specific design of specific requirement.
Wholly speaking, the utility model discloses when carrying out artifical manual change BGA pin, can shorten traditional change time greatly, traditional change time generally is about 30 minutes, adopts this instrument after, only needs 1 minute at most, can accomplish the change. And simultaneously, the utility model discloses can also be used to other miniature metal parts's change or installation.
Claims (14)
1. A hand tool for BGA pin replacement, comprising: the pen comprises a pen point (1), a shell (7), a metal pin (4) and a button (8), wherein the pen point (1) and the shell (7) are fixedly connected, a channel is formed in the pen point (1) and the shell (7), the metal pin (4) is integrally installed in the channel, the button (8) is located at an opening of the shell (7), and at least part of the length of the button (8) extends to the outside of the shell (7);
the two ends of the metal pin (4) are respectively provided with a contact end and a stop block end (6), the contact end is positioned at the opening of the pen point (1), the stop block end (6) is tightly attached to the button (8), the metal pin (4) is sequentially sleeved with a blocking block (2), a magnet block (3) and a spring (5), the front end of the blocking block (2) is abutted against the inner wall of the front end of the pen point (1), and the rear end of the spring (5) is abutted against the stop block end (6);
the diameter of the end part of the button (8) positioned in the shell (7) is larger than the diameter of the opening of the shell (7);
the metal pin (4) is made of a metal material capable of being magnetically adsorbed.
2. The hand tool for BGA pin replacement of claim 1, wherein: the metal pin (4) is a steel pin.
3. The hand tool for BGA pin replacement of claim 1, wherein: the blocking block (2) and the magnet block (3) are both hollow columnar structures, and the inner diameters of the hollow parts of the blocking block (2) and the magnet block (3) are matched with the outer diameter of the metal pin (4).
4. The hand tool for BGA pin replacement of claim 1, wherein: the spring (5) adopts a compression spring.
5. The hand tool for BGA pin replacement of claim 1 or 4, wherein: the mutual contact surface area of the spring (5) and the magnet block (3) is matched.
6. The hand tool for BGA pin replacement of claim 1 or 4, wherein: the outer diameter of the spring (5) is matched with the inner diameter of the channel.
7. The hand tool for BGA pin replacement of claim 1, wherein: the surface area of the contact end is smaller than or equal to the surface area of the top of the pin.
8. The hand tool for BGA pin replacement of claim 7, wherein: the metal pin (4) is integrally a cylindrical pin.
9. The hand tool for BGA pin replacement of claim 8, wherein: the metal pin (4) is integrally cylindrical.
10. The hand tool for BGA pin replacement of claim 8, wherein: the metal pin (4) is in a cuboid shape or other polygonal shapes as a whole.
11. The hand tool for BGA pin replacement of claim 7, wherein: the area of the contact end is smaller than that of the stop block end (6).
12. The hand tool for BGA pin replacement of claim 11, wherein: the metal pin (4) is in a nail shape, and a nail-shaped pointed head or a pointed top is used as a contact end.
13. The hand tool for BGA pin replacement of claim 11, wherein: the metal pin (4) is in a cone shape, and a cone-shaped pointed head or a pointed top is used as a contact end.
14. The hand tool for BGA pin replacement of claim 1, wherein: the top of the button (8) is provided with an arc structure suitable for the thumb of a human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220420918.1U CN217345295U (en) | 2022-02-25 | 2022-02-25 | A hand tool for BGA pin is changed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220420918.1U CN217345295U (en) | 2022-02-25 | 2022-02-25 | A hand tool for BGA pin is changed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217345295U true CN217345295U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220420918.1U Active CN217345295U (en) | 2022-02-25 | 2022-02-25 | A hand tool for BGA pin is changed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217345295U (en) |
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2022
- 2022-02-25 CN CN202220420918.1U patent/CN217345295U/en active Active
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