CN218121242U - Packaging structure of buckle type pressure sensor - Google Patents
Packaging structure of buckle type pressure sensor Download PDFInfo
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- CN218121242U CN218121242U CN202222051756.1U CN202222051756U CN218121242U CN 218121242 U CN218121242 U CN 218121242U CN 202222051756 U CN202222051756 U CN 202222051756U CN 218121242 U CN218121242 U CN 218121242U
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Abstract
The utility model provides a buckle formula pressure sensor's packaging structure, including metal casing and plastic housing, be equipped with the circuit board of being connected with the forced induction component electricity in the metal casing, the plastic housing shroud is in metal housing's top, plastic housing with the metal casing buckle is connected, metal casing and plastic housing enclose synthetic cavity interior packing casting glue, a plurality of line holes of crossing have been seted up at plastic housing's top, and the wire of being connected with the circuit board electricity passes through cross the line hole and stretch out plastic housing, the wire with cross line hole one-to-one. The utility model provides a buckle formula pressure sensor's packaging structure, the leakproofness is good, and waterproof grade is high, is connected through guide structure buckle formula between metal casing and the plastic housing, assembles simple and conveniently, is difficult for appearing the problem that wire fracture, casting glue fracture, and contact pin and wire welding maneuverability are strong.
Description
Technical Field
The utility model relates to a pressure sensor technical field especially relates to a buckle formula pressure sensor's packaging structure.
Background
The pressure sensor is a detection device, along with the continuous popularization of the market, the pressure sensor can be used in various occasions, in the existing pressure sensor packaging structure, the problems of low waterproof grade and complex connection mode of a plastic shell and a metal shell exist, when the waterproof grade is low and the sealing performance is poor, the sensor is volatile and effective in environments such as corrosion, dirt, water vapor and the like, the plastic shell and the metal shell are generally in threaded connection or hot riveting, the threaded connection is complex in assembly, equipment needs to be invested in the hot riveting, and the equipment cost is high; in addition, in the existing pressure sensor packaging structure, the problem that lead-free tin welding of the lead and the contact pin is difficult to operate exists, when the waterproof grade is improved by adopting glue pouring sealing, due to the fact that no supporting structure is arranged above the lead after glue pouring is carried out on a welding point of the lead and the contact pin, when the lead extending out of the pouring sealing glue is twisted, bent and the like at a position close to the pouring sealing glue, risks such as lead fracture or pouring sealing glue cracking are easy to occur.
Therefore, there is a need to design a new package structure of a pressure sensor to overcome the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a buckle formula pressure sensor's packaging structure, the utility model discloses partial problem among the prior art has been solved at least.
The utility model discloses a realize like this:
the utility model provides a buckle formula pressure sensor's packaging structure, including metal casing and plastic housing, be equipped with the circuit board of being connected with the forced induction component electricity in the metal casing, the plastic housing shroud is in metal housing's top, plastic housing with the metal casing buckle is connected, metal casing and plastic housing enclose synthetic cavity internal packing casting glue, a plurality of line holes of crossing have been seted up at plastic housing's top, and the wire of being connected with the circuit board electricity passes through cross the line hole and stretch out plastic housing, the wire with cross line hole one-to-one.
Furthermore, a plurality of buckle structures are arranged on the inner wall of the plastic shell, and an annular groove matched and clamped with the buckle structures is formed in the metal shell.
Furthermore, the number of the buckle structures is four, and the buckle structures are distributed along the inner wall of the plastic shell at even intervals.
Furthermore, a wedge-shaped guide structure is arranged on the metal shell and located above the annular groove, and a wedge-shaped chamfer is arranged at the bottom of the buckle structure.
Furthermore, three wire through holes are formed in the top of the plastic shell and are arranged side by side.
Furthermore, the top of the plastic shell is also provided with a glue filling hole and an exhaust hole, and the wire passing hole is positioned between the glue filling hole and the exhaust hole.
Furthermore, the glue filling hole and the exhaust hole are both waist-shaped long holes, and the glue filling hole is larger than the exhaust hole.
Furthermore, the circuit board is an FPC flexible conditioning circuit module, the circuit board is positioned above the pressure sensing element in the metal shell, the top of the metal shell is blocked by an upper end cover, the contact pin is arranged on the upper end cover, and the lead is electrically connected with the circuit board through the contact pin.
Furthermore, the top of the metal shell is provided with a bending part for pressing the upper end cover.
Furthermore, a sheath is sleeved on the lead extending out of the plastic shell.
The utility model discloses following beneficial effect has:
1. the utility model discloses in, be connected through guide structure buckle formula between metal casing and the plastic housing, the assembly is succinct convenient.
2. The utility model discloses in, the wire passes plastic housing's line hole of crossing, owing to there is the three supporting role of crossing the line hole, the pencil twists reverse when guaranteeing the sensor use, buckle the back pencil can not fracture, and directly lead to the casting glue fracture of pencil (wire) and casting glue upper end contact department when having avoided the pencil to buckle.
3. Before the metal shell is connected with the plastic shell, a lead wire penetrates through the wire passing hole of the plastic shell and is connected with the contact pin in a lead-free tin soldering mode, the plastic shell is not connected with the metal shell, the contact pin is completely exposed outside, welding operation cannot be affected, welding operability is high, then the plastic shell is connected with the metal shell in a buckling mode, pouring sealant is injected from the pouring hole of the plastic shell, the pouring hole is of a kidney-round hole structure and is large in size, when the pouring sealant is injected, gas is exhausted from the exhaust holes on the other side of the three wire passing holes, no air hole is generated after pouring curing, sealing performance after pouring is excellent, the waterproof grade is high, procedures of arranging an O-shaped ring or applying sealant and the like at the leakage gap between the metal shell and the upper end cover are omitted, the risk of water entering under humid environments such as corrosion, dirt and water vapor and the like to cause short circuit inside the sensor is avoided, the pouring sealant can be bonded with the plastic shell and the metal shell after curing, the contact position can reach the sealing performance is good, and the waterproof grade can reach IP69.
4. The utility model provides a current pressure sensor packaging structure waterproof grade not high, the sensor is volatile in environment such as corruption, filth, steam and is imitated, and equipment input cost is high, the difficult scheduling problem of welding maneuverability. The utility model discloses the structure is succinct, and equipment input cost is low, and the process is few, and contact pin and wire welding maneuverability is strong, and the assembly is simple, and the outward appearance is pleasing to the eye, is suitable for popularization and application.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, obviously, the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a snap-in pressure sensor package structure provided in an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a snap connection between a plastic housing and a metal housing according to an embodiment of the present invention;
fig. 3 is a partial enlarged view of fig. 2 according to an embodiment of the present invention;
fig. 4 is a schematic view of an external structure of a metal shell according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an external shape of a plastic housing according to an embodiment of the present invention;
fig. 6 is a schematic view of an internal structure of a plastic housing according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a lead and a contact pin provided by the embodiment of the present invention after welding;
fig. 8 is a schematic diagram of a product appearance structure of the snap-in pressure sensor according to an embodiment of the present invention.
The reference numbers illustrate: 1. a metal housing; 2. a plastic housing; 3. pouring a sealant; 4. a sheath; 5. a wire; 6. an upper end cover; 7. inserting a pin; 101. a bending part; 102. an annular groove; 103. a wedge-shaped guide structure; 201. a buckle structure; 202. filling glue holes; 203. an exhaust hole; 204. a wire passing hole; 205. and (6) performing wedge chamfering.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1-8, the embodiment of the utility model provides a buckle formula pressure sensor's packaging structure, including metal casing 1 and plastic casing 2, be equipped with the circuit board of being connected with the forced induction component electricity in the metal casing 1, 2 shroud of plastic casing are in metal casing 1's top, plastic casing 2 with metal casing 1 buckle is connected, metal casing 1 and plastic casing 2 enclose synthetic cavity internal packing casting glue 3, a plurality of wire holes 204 of crossing have been seted up at plastic casing 2's top, and the wire 5 of being connected with the circuit board electricity passes through it stretches out to cross wire hole 204 plastic casing 2, wire 5 with cross wire hole 204 one-to-one. Be equipped with a plurality of buckle structures 201 on the 2 inner walls of plastic housing, set up on metal casing 1 with the annular groove 102 of buckle structure 201 cooperation joint, annular groove 102 sets up along metal casing 1's circumference. There are four snap structures 201, and the snap structures 201 are uniformly distributed along the inner wall of the plastic shell 2 at intervals. Be equipped with wedge guide structure 103 on metal casing 1, wedge guide structure 103 is located annular groove 102 top, and wedge guide structure 103 sets up along metal casing 1's circumference, buckle structure 201 bottom is equipped with wedge chamfer 205, and wedge guide structure 103, wedge chamfer 205 all are convenient for plastic housing 2 and metal casing 1's erection joint. Three wire through holes 204 are formed in the top of the plastic shell 2, and the wire through holes 204 are arranged side by side. The top of the plastic shell 2 is also provided with a glue filling hole 202 and an exhaust hole 203, and a wire passing hole 204 is positioned between the glue filling hole 202 and the exhaust hole 203. The glue filling hole 202 and the exhaust hole 203 are both waist-shaped long holes, and the glue filling hole 202 is larger than the exhaust hole 203.
The utility model discloses in, be connected through guide structure buckle formula between metal casing 1 and the plastic casing 2, the assembly is succinct convenient. The wire 5 passes through the wire passing holes 204 of the plastic shell 2, and due to the supporting effect of the three wire passing holes 204, the wire harness is prevented from being broken after the wire harness is twisted and bent when the sensor is used, and the cracking of the potting adhesive at the contact position of the wire harness (the wire) and the upper end of the potting adhesive is avoided when the wire harness is bent.
Before the metal shell 1 is connected with the plastic shell 2, the lead 5 firstly passes through the wire passing hole 204 of the plastic shell 2 and is in lead-free tin soldering with the contact pin 7, at the moment, the plastic shell 2 is not connected with the metal shell 1, the contact pin 7 is completely exposed, the soldering operation cannot be influenced, the soldering operability is strong, then the plastic shell 2 is in buckle connection with the metal shell 1, the pouring sealant is injected from the pouring hole 202 of the plastic shell 2, the pouring hole 202 is of a waist-round hole structure and is large in size, when the pouring sealant 3 is injected, the gas is discharged from the exhaust hole 203 on the other side of the three wire passing holes 204, no air hole is generated after the pouring and curing, the sealing performance after the pouring and the sealing is excellent, the waterproof grade is high, the procedures of arranging an O-shaped ring or applying the sealant at the leakage gap between the metal shell 1 and the upper end cover 6 are omitted, the risk of short circuit in the sensor caused by water inflow under the humid environments of corrosion, dirt, water vapor and the like is avoided, the sealing performance of the plastic shell 2 and the metal shell 1 after the pouring and the sealant 3 is cured, the sealing performance of the contact position is good, and the waterproof grade can reach 69.
To plastic housing itself from the area hold the chamber, the packaging structure of the current pressure sensor in the plastic housing outside of metal casing riveting, its plastic housing itself holds chamber opening size from the area little, and the lead-free tin soldering of wire and contact pin is inconvenient, and welding maneuverability is not strong the utility model discloses in, 2 shroud of plastic housing are in the 1 outside of metal housing, before plastic housing 2 is not connected with metal housing 1, contact pin 7 exposes outside completely, can not influence welding operation, and welding maneuverability is strong.
The circuit board is FPC flexible conditioning circuit module (FPC is flexible circuit board), in metal casing 1, the circuit board is located the forced induction component top, metal casing 1 top adopts upper end cover 6 shutoff, contact pin 7 is located on upper end cover 6, wire 5 is connected with the circuit board electricity through contact pin 7, still can set up anti electromagnetic interference's metal inner shield cover in the metal casing 1, the inner wall setting of metal casing 1 is hugged closely to the metal inner shield cover, metal casing 1 bottom is equipped with the medium through-hole that communicates the external world and forced induction component bottom forced induction district, the aforesaid is prior art, no longer give unnecessary details here. The top of the metal shell 1 is provided with a bending part 101 for pressing the upper end cover 6. The conducting wire 5 extending out of the plastic shell 2 is sleeved with a sheath 4.
The utility model provides a current pressure sensor packaging structure waterproof grade not high, the sensor is volatile in environment such as corruption, filth, steam and is imitated, and equipment input cost is high, the difficult scheduling problem of welding maneuverability. The utility model discloses the structure is succinct, and equipment input cost is low, and the process is few, and contact pin and wire welding maneuverability is strong, and the assembly is simple, and the outward appearance is pleasing to the eye, is suitable for popularization and application.
The utility model provides a buckle formula pressure sensor packaging structure, including metal casing 1, plastic housing 2, casting glue 3, sheath 4, wire 5, upper end cover 6, contact pin 7. As shown in fig. 2 to 4, the plastic housing 2 is provided with a body and a buckle structure 201, the bent portion 101 of the metal housing 1 presses the upper end cover 6, the upper portion of the metal housing 1 includes an annular groove 102, the buckle structure 201 of the plastic housing 2 is connected with the annular groove 102 of the metal housing in a snap fit manner, the plastic buckle structures 201 are uniformly distributed in an annular shape, preferably 4, and adjacent included angles are 90 °, the upper portion of the metal housing 1 further includes a wedge-shaped guide structure 103 at the upper end of the annular groove 102, and the lower half portion of the inner edge of the buckle structure 201 of the plastic housing 2 includes a wedge-shaped chamfer 205, which is both beneficial to the installation and connection of the plastic housing 2 and the metal housing 1; as shown in fig. 5-8, the contact pin 7 and the upper end cap 6 are sealed and formed into a whole, the contact pin 7 is soldered to the lead-free solder of the lead wire 5, the lead wire 5 passes through the wire through hole 204 of the plastic housing 2, and the upper end of the plastic housing 2 is provided with a glue filling hole 202, an air vent 203 and three wire through holes 204; contact pin 7, upper end cap 6, wire 5's partial structure set up the inside at plastic casing 2, plastic casing 2's inside is equipped with casting glue 3, casting glue 3 covers upper end cap 6 and contact pin 7 and extends to wire 5's downside, and casting glue 3 covers wire 5 downside 3-10mm, the casting glue is organic silicon resin casting glue, epoxy resin casting glue, room temperature vulcanized silica gel or polyurethane casting glue.
The glue filling holes 202 and the air exhaust holes 203 are all kidney-shaped long holes and are respectively positioned at two sides of the three wire passing holes 204, the size of the glue filling holes 202 is larger than that of the air exhaust holes 203, and the diameters of the three wire passing holes 204 are 1.6-2mm according to the wire harness requirement of a product.
The utility model provides a buckle formula pressure sensor can be applied to vehicle air conditioner, ventilation unit, commercial or domestic air conditioner especially variable frequency air conditioner.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a buckle formula pressure sensor's packaging structure which characterized in that: including metal casing and plastic housing, be equipped with the circuit board of being connected with the forced induction component electricity in the metal casing, the plastic housing shroud is in metal casing's top, plastic housing with the metal casing buckle is connected, metal casing and plastic housing enclose synthetic cavity and fill the casting glue, a plurality of line holes of crossing have been seted up at plastic housing's top, and the wire of being connected with the circuit board electricity passes through it stretches out to cross the line hole plastic housing, the wire with cross line hole one-to-one.
2. The package structure of a snap-on pressure sensor according to claim 1, wherein: the plastic shell is characterized in that a plurality of buckle structures are arranged on the inner wall of the plastic shell, and an annular groove matched and clamped with the buckle structures is formed in the metal shell.
3. The package structure of a snap-in pressure sensor according to claim 2, wherein: the number of the buckle structures is four, and the buckle structures are distributed along the inner wall of the plastic shell at even intervals.
4. The package structure of a snap-in pressure sensor according to claim 2, wherein: be equipped with wedge guide structure on the metal casing, wedge guide structure is located the annular groove top, buckle structure bottom is equipped with the wedge chamfer.
5. The package structure of a snap-on pressure sensor according to claim 1, wherein: three wire passing holes are formed in the top of the plastic shell and are arranged side by side.
6. The package structure of a snap-in pressure sensor according to claim 5, wherein: the top of the plastic shell is also provided with a glue filling hole and an exhaust hole, and the wire passing hole is positioned between the glue filling hole and the exhaust hole.
7. The package structure of snap-in pressure sensor according to claim 6, wherein: the glue filling hole and the exhaust hole are both waist-shaped long holes, and the glue filling hole is larger than the exhaust hole.
8. The package structure of a snap-in pressure sensor according to claim 1, wherein: the circuit board is an FPC flexible conditioning circuit module, the circuit board is positioned above the pressure sensing element in the metal shell, the top of the metal shell is blocked by an upper end cover, the contact pin is arranged on the upper end cover, and the lead is electrically connected with the circuit board through the contact pin.
9. The package structure of a snap-in pressure sensor according to claim 8, wherein: the top of the metal shell is provided with a bending part for compressing the upper end cover.
10. The package structure of a snap-on pressure sensor according to claim 1, wherein: the conducting wire extending out of the plastic shell is sleeved with a sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222051756.1U CN218121242U (en) | 2022-08-05 | 2022-08-05 | Packaging structure of buckle type pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222051756.1U CN218121242U (en) | 2022-08-05 | 2022-08-05 | Packaging structure of buckle type pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218121242U true CN218121242U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222051756.1U Active CN218121242U (en) | 2022-08-05 | 2022-08-05 | Packaging structure of buckle type pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218121242U (en) |
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2022
- 2022-08-05 CN CN202222051756.1U patent/CN218121242U/en active Active
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