CN212344263U - Circuit board box sealing structure - Google Patents
Circuit board box sealing structure Download PDFInfo
- Publication number
- CN212344263U CN212344263U CN202021118252.1U CN202021118252U CN212344263U CN 212344263 U CN212344263 U CN 212344263U CN 202021118252 U CN202021118252 U CN 202021118252U CN 212344263 U CN212344263 U CN 212344263U
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- CN
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- Prior art keywords
- groove
- box body
- circuit board
- annular
- lid
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- 238000007789 sealing Methods 0.000 title claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000741 silica gel Substances 0.000 claims abstract description 11
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 11
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Casings For Electric Apparatus (AREA)
Abstract
The utility model discloses a circuit board box seal structure relates to an electric tool's circuit control box is sealed, and its structure is closed the lid of connecting on the box body by box body, lid to and sealed circuit board etc. of sealing between lid and box body constitute, mainly add the annular between lid and box body, this annular is that the cyclic annular contact surface along lid and box body extends the setting, packs silica gel in the annular and seals. Meanwhile, the annular groove is designed to be composed of an outer half groove and an inner half groove which are mutually buckled, and the bottom of the outer half groove is lower than the bottom of the inner half groove, so that a sealing line is additionally arranged in the annular groove, the sealing performance of the silica gel is further improved, and the selection requirement and the use cost of the silica gel are also reduced; therefore, compared with a sealing ring structure adopted in the prior art, the sealing structure with the silica gel filled in the ring groove can better prevent water vapor from entering from an annular contact surface between the box cover and the box body, and has the advantages of good sealing performance, reliable use and the like.
Description
Technical Field
The utility model relates to a seal structure specifically is a circuit board box seal structure.
Background
At present, a circuit board box of an electric tool is mainly composed of a box body, a box cover connected to the box body in a covering mode, a circuit board sealed between the box cover and the box body and the like. Traditional seal structure only sets up the sealing washer between lid and box body, has shortened the sealing washer for a long time and has reduced sealing performance because of reasons such as erosion, ageing easily, will influence the use reliability of circuit board box like this.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect and provide a circuit board box seal structure that sealing performance is good, use reliable.
The technical problem of the utility model is realized through following technical scheme:
the utility model provides a circuit board box seal structure, includes that box body, lid close the lid of connecting on the box body to and the sealed circuit board of sealing between lid and box body, lid and box body between be equipped with the annular, this annular extends the setting along the cyclic annular contact surface of lid and box body, pack the sealed silica gel of using in the annular.
The box body on be equipped with the mounting groove, circuit board and lid all inlay and adorn in the mounting groove.
The annular contact surface is formed by annularly contacting the inner peripheral surface of the mounting groove and the outer peripheral surface of the box cover.
The ring groove is formed by mutually buckling an outer half groove arranged at the top of the inner peripheral surface of the mounting groove and an inner half groove arranged at the top of the outer peripheral surface of the box cover.
The outer bottom of the outer half groove is lower than the inner bottom of the inner half groove.
The outer half groove is L-shaped and consists of a horizontal outer groove bottom and a straight groove wall vertical to the outer groove bottom.
The inner half groove consists of a horizontal inner groove bottom, a chute wall connected with the inner groove bottom and an arc groove wall connected with the chute wall.
Compared with the prior art, the utility model discloses mainly add the annular between the lid of interconnect and box body, this annular is extended along the cyclic annular contact surface of lid with the box body and is set up to pack silica gel in the annular and seal. Therefore, compared with a sealing ring structure adopted in the prior art, the sealing structure with the silica gel filled in the ring groove can better prevent water vapor from entering from an annular contact surface between the box cover and the box body, and has the advantages of good sealing performance, reliable use and the like.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is an enlarged view of fig. 1 at a.
Fig. 3 is an enlarged view of fig. 1 at a.
Fig. 4 is a schematic view of the external structure of fig. 1.
Fig. 5 is an exploded perspective view of fig. 4.
Fig. 6 is a schematic view of the structure of fig. 4 with the cover removed.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings.
As shown in fig. 1 to 6, 1 is a box body, 11 is an installation groove, 2 is a box cover, 3 is a circuit board, 4 is a ring groove, 41 is an outer half groove, 411 is an outer groove bottom, 412 is a straight groove wall, 42 is an inner half groove, 421 is an inner groove bottom, 422 is an inclined groove wall, 423 is an arc groove wall, 5 is an annular contact surface, and 6 is a self-tapping screw.
A circuit board box sealing structure is shown in figure 1 and mainly relates to a circuit control box seal of an electric tool, and the structure of the circuit board box sealing structure is composed of a box body 1, a box cover 2, a circuit board 3 and the like.
The box body 1 is provided with a mounting groove 11, the circuit board 3 is embedded and fixed in the mounting groove 11 through a plurality of self-tapping screws, and the box cover 2 is connected with the box body 1 in a covering manner through a plurality of self-tapping screws 6 and is also embedded and fixed in the mounting groove 11; thus, the circuit board 3 is hermetically sealed between the case cover 2 and the case body 1, that is, in the mounting groove 11.
Meanwhile, the sealing structure is specifically shown in fig. 4: an annular groove 4 is arranged between the box cover 2 and the box body 1, the annular groove extends along an annular contact surface 5 of the box cover 2 and the box body 1, and the annular contact surface 5 means that the inner circumferential surface of the mounting groove 11 is in annular contact with the outer circumferential surface of the box cover 2.
Therefore, the ring groove 4 is actually formed by fastening an outer half groove 41 formed at the top of the inner circumferential surface of the mounting groove 11 and an inner half groove 42 formed at the top of the outer circumferential surface of the box cover 2 as shown in fig. 2 and 3; the outer half-tank 41 is L-shaped and comprises a horizontal outer tank bottom 411 and a straight tank wall 412 perpendicular to the outer tank bottom, and the inner half-tank 42 comprises a horizontal inner tank bottom 421, a chute wall 422 connected to the inner tank bottom and an arc tank wall 423 connected to the chute wall.
Therefore, sealing between the box cover 2 and the box body 4 can be realized only by filling silica gel in the ring groove 4, namely, water vapor can be better prevented from entering from the annular contact surface 5 between the box cover 2 and the box body 1, and the using function of the circuit board 3 is prevented from being influenced.
In addition, the outer groove bottom 411 of the outer half groove 41 needs to be designed to be lower than the inner groove bottom 421 of the inner half groove 42, so that after a step surface similar to the height difference is formed at the groove bottom of the ring groove 4, a sealing line can be added more than that of the flat groove bottom of the ring groove, thereby not only further improving the sealing performance of the silica gel, but also reducing the selection requirement and the use cost of the silica gel.
The above description is only an embodiment of the present invention, and those skilled in the art should understand that any structural design similar to the embodiment is included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a circuit board box seal structure, includes box body (1), lid and closes lid (2) of connection on the box body to and circuit board (3) of sealed closure between lid (2) and box body (1), its characterized in that lid (2) and box body (1) between be equipped with annular (4), this annular extends the setting along cyclic annular contact surface (5) of lid and box body, packs the silica gel of sealed usefulness in annular (4).
2. A circuit board box sealing structure according to claim 1, characterized in that the box body (1) is provided with a mounting groove (11), and the circuit board (3) and the box cover (2) are both embedded in the mounting groove (11).
3. A circuit board box sealing structure according to claim 2, characterized in that the annular contact surface (5) is an annular contact surface between the inner peripheral surface of the mounting groove (11) and the outer peripheral surface of the box cover (2).
4. A circuit board box sealing structure according to claim 3, characterized in that the ring groove (4) is formed by mutually engaging an outer half groove (41) provided at the top of the inner peripheral surface of the mounting groove (11) and an inner half groove (42) provided at the top of the outer peripheral surface of the box cover (2).
5. A circuit board box sealing structure according to claim 4, characterized in that the outer slot bottom (411) of the outer half slot (41) is lower than the inner slot bottom (421) of the inner half slot (42).
6. A circuit board box sealing structure according to claim 4, characterized in that said outer half groove (41) is "L" shaped and is formed by a horizontal outer groove bottom (411) and a straight groove wall (412) perpendicular to the outer groove bottom.
7. A circuit board box sealing structure according to claim 4, characterized in that said inner half-groove (42) is formed by a horizontal inner groove bottom (421), a chute wall (422) connected to the inner groove bottom and an arc groove wall (423) connected to the chute wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118252.1U CN212344263U (en) | 2020-06-17 | 2020-06-17 | Circuit board box sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118252.1U CN212344263U (en) | 2020-06-17 | 2020-06-17 | Circuit board box sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212344263U true CN212344263U (en) | 2021-01-12 |
Family
ID=74077745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021118252.1U Active CN212344263U (en) | 2020-06-17 | 2020-06-17 | Circuit board box sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212344263U (en) |
-
2020
- 2020-06-17 CN CN202021118252.1U patent/CN212344263U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 315400 Chaoyang Road, Yuyao City, Ningbo, Zhejiang Province, No. 1 Patentee after: NINGBO DAYE GARDEN INDUSTRY Co.,Ltd. Address before: 315400 Chaoyang Road, Yuyao City, Ningbo, Zhejiang Province, No. 1 Patentee before: NINGBO DAYE GARDEN INDUSTRY Co.,Ltd. |
|
| CP03 | Change of name, title or address |