CN213213880U - Low-voltage PTC heater - Google Patents
Low-voltage PTC heater Download PDFInfo
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- CN213213880U CN213213880U CN202021787572.6U CN202021787572U CN213213880U CN 213213880 U CN213213880 U CN 213213880U CN 202021787572 U CN202021787572 U CN 202021787572U CN 213213880 U CN213213880 U CN 213213880U
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- ptc heater
- inserted sheet
- circuit board
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Abstract
The utility model provides a low pressure PTC heater, including PTC heater inserted sheet, connection piece and circuit board, first through-hole has been seted up at the connection piece middle part, be equipped with inserted sheet through-hole and pad on the circuit board, the connection piece with the pad welding, be equipped with the second through-hole on the pad, first through-hole and second through-hole are all just right the inserted sheet through-hole, the second through-hole is located first through-hole with between the inserted sheet through-hole, first through-hole is equipped with a plurality of elasticity turn-ups towards one side of circuit board, each the elasticity turn-ups all runs through second through-hole and inserted sheet through-hole, the PTC heater inserted sheet includes the boss of inserting of being connected with the circuit board electricity, insert behind boss run through first through-hole, second through-hole and inserted sheet through-hole. The utility model provides a low-voltage PTC heater, when circuit board and inserted sheet equipment, saved flatiron welded process, it is high to have the reliability, and the security is high, and production efficiency is high, advantage such as with low costs.
Description
Technical Field
The utility model relates to a heater field especially relates to a low pressure PTC heater.
Background
At present, the PTC heater inserting piece and the circuit board are connected by soldering iron soldering tin, and the current of the PTC heater is large during the operation, so that the PTC heater inserting piece is as wide and as thick as possible when the width and the thickness of copper foil on the circuit board are designed, otherwise, the resistance of the circuit board is large, and the temperature is high during the operation. The design also leads to better heat dissipation capability of the circuit board, and finally leads to longer welding time and higher welding temperature when the circuit board is welded in a production line. When in welding, the high temperature of the soldering iron easily damages electronic components on the circuit board, and the function of the low-voltage PTC heater fails.
It is therefore desirable to design a low voltage PTC heater 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 low pressure PTC heater, solved the partial problem among the prior art at least.
The utility model discloses a realize like this:
the utility model provides a low pressure PTC heater, including PTC heater inserted sheet, connection piece and circuit board, first through-hole has been seted up at the connection piece middle part, be equipped with inserted sheet through-hole and pad on the circuit board, the connection piece with the pad welding, be equipped with the second through-hole on the pad, first through-hole and second through-hole are all just right the inserted sheet through-hole, the second through-hole is located first through-hole with between the inserted sheet through-hole, first through-hole is equipped with a plurality of elasticity turn-ups towards one side of circuit board, each the elasticity turn-ups all runs through second through-hole and inserted sheet through-hole, the PTC heater inserted sheet includes the boss of inserting of being connected with the circuit board electricity, insert behind boss run through first through-hole, second through-hole and inserted sheet through-hole.
Preferably, the connecting sheet is provided with a positioning claw, and the circuit board is provided with a positioning hole correspondingly matched with the positioning claw.
Preferably, the number of the positioning claws and the number of the positioning holes are two, the two positioning claws are distributed in an oblique diagonal manner, and the two positioning holes are arranged along the oblique diagonal of the pad.
Preferably, the PTC heater inserted sheet still includes the spacing boss that plays limiting displacement during the riveting, the connection piece is located between spacing boss and pad.
Preferably, the number of the elastic flanging is three, and the three elastic flanging are arranged in a triangular shape.
Preferably, the connecting sheet and the bonding pad are rectangular.
The utility model discloses following beneficial effect has:
the utility model provides a low pressure PTC heater when circuit board and inserted sheet equipment, has saved flatiron welded process, has avoided the welding difficulty, and the problem that weld time is long and welding temperature is high also can not appear simultaneously because of rosin joint, leak the condition that leads to the product out of work or intermittent type nature inoperative that welds, the utility model provides a low pressure PTC heater has the reliability height, and the security is high, and production efficiency is high, and advantage such as with low costs can guarantee the security of PTC at the biggest shelves during operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description 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 partial exploded view of a low-voltage PTC heater according to an embodiment of the present invention;
fig. 2 is a schematic view of a connecting sheet according to an embodiment of the present invention;
fig. 3 is a schematic view of a circuit board provided in an embodiment of the present invention;
fig. 4 is a schematic view of a PTC heater insert provided by an embodiment of the present invention.
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.
Referring to fig. 1-4, the embodiment of the present invention provides a low-voltage PTC heater, which comprises a PTC heater insert 1, a connecting piece 2 and a circuit board 3, a first through hole 4 is arranged in the middle of the connecting sheet 2, an inserting sheet through hole (not shown) and a bonding pad 5 are arranged on the circuit board 3, the connecting sheet 2 is welded with the bonding pad 5, a second through hole 6 is arranged on the bonding pad 5, the first through hole 4 and the second through hole 6 are both right opposite to the inserting sheet through hole, the second through hole 6 is positioned between the first through hole 4 and the insert through hole, a plurality of elastic flanges 7 are arranged on one side of the first through hole 4 facing the circuit board, each elastic flange 7 penetrates through the second through hole 6 and the insert through hole, the PTC heater inserted sheet includes the boss 8 that inserts of being connected with the circuit board electricity, insert behind boss 8 runs through first through-hole 4, second through-hole 6 and inserted sheet through-hole with each elasticity turn-ups 7 riveting fixed connection.
Traditional PTC heater inserted sheet and circuit board adopt flatiron soldering tin to connect, because the copper facing area is great on the circuit board, the heat dissipation is fast, lead to the welding difficulty, the soldering time is long and welding temperature is high, secondly, in welding process, there may exist rosin joint, leak the condition of welding, can lead to the product out of work or intermittent type nature is out of work, in addition, low pressure PTC is at the biggest shelves during operation, the electric current is great, the poor contact resistance grow that probably leads to of welding finally leads to PCB to burn out.
The utility model provides a low pressure PTC heater when circuit board and inserted sheet equipment, has saved flatiron welded process, has avoided the welding difficulty, and the problem that weld time is long and welding temperature is high also can not appear simultaneously because of rosin joint, leak the condition that leads to the product out of work or intermittent type nature inoperative that welds, the utility model provides a low pressure PTC heater has the reliability height, and the security is high, and production efficiency is high, and advantage such as with low costs can guarantee the security of PTC at the biggest shelves during operation.
The connecting piece 2 is provided with a positioning claw 9, and the circuit board 3 is provided with a positioning hole 10 correspondingly matched with the positioning claw 9. The number of the positioning claws 9 and the number of the positioning holes 10 are two, the two positioning claws 9 are distributed in an oblique diagonal manner, and the two positioning holes 10 are arranged along the oblique diagonal of the bonding pad 5.
PTC heater inserted sheet 1 still plays limiting displacement's spacing boss 11 during including the riveting, connection piece 2 is located between spacing boss 11 and pad 5.
In this embodiment, there are three elastic cuffs 7, and three elastic cuffs 7 are arranged in a triangular shape. The connecting sheet 2 and the bonding pad 5 are both rectangular.
The utility model provides a connecting structure of a low-voltage PTC heater inserting piece and a circuit board, wherein the low-voltage PTC heater comprises a brass inserting piece (PTC heater inserting piece 1), a connecting piece 2 and a circuit board 3; the connecting piece 2 is provided with two positioning claws 9, the middle of the connecting piece 2 is provided with a first through hole 4 and a plurality of tooth-shaped elastic arm structures (elastic flanging 7); the circuit board 3 is provided with the inserted sheet through-hole, the other pad 5 that is provided with of inserted sheet through-hole, 5 diagonal angles of pad be provided with the locating hole 10 that connection piece locating claw 9 is connected. The circuit board bonding pad 5 is printed with solder paste, the connecting piece 2 is placed on the circuit board bonding pad 5, and the connecting piece 2 and the circuit board 3 are fixed together through a positioning claw 9; then the connecting sheet 2 and the circuit board 3 are welded together by SMT reflow soldering; then riveting the inserting sheet into the connecting sheet assembly on the circuit board 3 through a tool; a plurality of dentate spring arm structures of the connecting sheet 2 are permanently deformed under the pressure action of the riveting machine, so that the brass inserting sheets are firmly fixed. The utility model discloses an inserted sheet and circuit board adopt the riveting to connect, the utility model discloses a reliability has, and the security is high, and production efficiency is high, advantage such as with low costs
In the utility model, a bonding pad 5 and a positioning hole 10 are arranged on the circuit board 3, and a limit boss 11 and an insertion boss 8 are arranged on the PTC heater insertion piece 1; printing solder paste on a pad 5 of the circuit board 3 by a solder paste screen printing machine, placing the connecting sheet 2 on the pad 5 of the circuit board, and placing the connecting sheet into a positioning hole 10 of the circuit board for positioning by a positioning claw 9 of the connecting sheet; then, the assembled circuit board 3 and the connecting sheet 2 are welded together through reflow soldering; then, riveting the insertion boss 8 of the PTC heater insertion piece 1 into the circuit board and the connection piece assembly through a tool, and completing the riveting when the insertion piece limiting boss 11 is contacted with the connection piece 2; the inserting boss 8 of the inserting piece is in interference fit with the elastic flanging 7 of the connecting piece, and the elastic flanging 7 of the connecting piece and the inserting boss 8 of the inserting piece are elastically deformed under the pressure action of the riveting machine; after the pressure of the riveting press is released, the elastic flanging 7 of the connecting sheet is firmly fixed by the inserting boss 8.
The above description is only a 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 (6)
1. A low-voltage PTC heater, characterized in that: including PTC heater inserted sheet, connection piece and circuit board, first through-hole has been seted up at the connection piece middle part, be equipped with inserted sheet through-hole and pad on the circuit board, the connection piece with the pad welding, be equipped with the second through-hole on the pad, first through-hole and second through-hole are all just right the inserted sheet through-hole, the second through-hole is located first through-hole with between the inserted sheet through-hole, first through-hole is equipped with a plurality of elasticity turn-ups towards one side of circuit board, each the elasticity turn-ups all runs through second through-hole and inserted sheet through-hole, the PTC heater inserted sheet includes the boss of inserting of being connected with the circuit board electricity, insert behind first through-hole, second through-hole and the inserted sheet through-hole with each.
2. A low-voltage PTC heater according to claim 1, wherein: the connecting sheet is provided with a positioning claw, and the circuit board is provided with a positioning hole correspondingly matched with the positioning claw.
3. A low-voltage PTC heater according to claim 2, wherein: the positioning claws and the positioning holes are two, the two positioning claws are distributed in an oblique diagonal manner, and the two positioning holes are arranged along the oblique diagonal of the bonding pad.
4. A low-voltage PTC heater according to claim 1, wherein: the PTC heater inserted sheet still plays limiting displacement's spacing boss during including the riveting, the connection piece is located between spacing boss and pad.
5. A low-voltage PTC heater according to claim 1, wherein: the number of the elastic flanging is three, and the elastic flanging is arranged in a triangular shape.
6. A low-voltage PTC heater according to claim 1, wherein: the connecting sheet and the bonding pad are both rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021787572.6U CN213213880U (en) | 2020-08-25 | 2020-08-25 | Low-voltage PTC heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021787572.6U CN213213880U (en) | 2020-08-25 | 2020-08-25 | Low-voltage PTC heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213213880U true CN213213880U (en) | 2021-05-14 |
Family
ID=75841186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021787572.6U Active CN213213880U (en) | 2020-08-25 | 2020-08-25 | Low-voltage PTC heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213213880U (en) |
-
2020
- 2020-08-25 CN CN202021787572.6U patent/CN213213880U/en active Active
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