CN108711477B - Structure of high-power precise chip resistor - Google Patents
Structure of high-power precise chip resistor Download PDFInfo
- Publication number
- CN108711477B CN108711477B CN201810510741.2A CN201810510741A CN108711477B CN 108711477 B CN108711477 B CN 108711477B CN 201810510741 A CN201810510741 A CN 201810510741A CN 108711477 B CN108711477 B CN 108711477B
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- fixedly connected
- chip resistor
- rubber shell
- resistor
- spring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/022—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being openable or separable from the resistive element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Resistors (AREA)
Abstract
The invention discloses a structure of a high-power precise chip resistor, which comprises a resistor body, wherein the lower surface of the resistor body is fixedly connected with the upper surface of a rubber shell, the upper surface of the rubber shell is fixedly connected with the lower surfaces of two fixing blocks, the fixing blocks are positioned on the right side of the resistor body, opposite surfaces of the two fixing blocks are respectively clamped with one surface far away from two bearings, and the opposite surfaces of the two bearings are respectively sleeved with two ends of a rotating shaft. According to the invention, through the matching among the protective shell, the bearing, the rotating shaft, the through hole, the sliding rod, the first limiting plate, the second limiting plate, the first spring, the sliding sleeve and the pull ring, people loosen the pull ring, the first spring pushes the first limiting plate to move rightwards by utilizing the elasticity of the first spring, the first limiting plate moves rightwards to drive the sliding rod to move rightwards to extend into the through hole formed in the left side surface of the protective shell, so that the protective shell is fixed above the resistor body, and the protective shell can shield dust.
Description
Technical Field
The invention relates to the technical field of electronic elements, in particular to a structure of a high-power precise chip resistor.
Background
The chip fixed resistor, commonly called as a chip resistor, is one of metal glass uranium resistors. The resistor is manufactured by mixing metal powder and glass uranium powder and printing the mixture on a substrate by a screen printing method. It is resistant to humidity and high temperature and has small temperature coefficient. The circuit space cost can be greatly saved, and the design is more refined.
In the internal resistor of the machine, the welding of the chip resistor is particularly important, the stability of the chip resistor can directly influence the working process of the whole circuit board, for example, Chinese patent discloses 'an improved structure of the chip resistor' (patent number: CN 206194469U), the technical problem solved by the patent is that the side surface of the chip resistor is fixedly connected with the upper surface of the welding surface by using liquid tin when the common chip resistor is welded, the welding has less contact surface between the chip resistor and the liquid tin and poor stability, the chip resistor achieves the effect of increasing the contact area with the liquid tin by arranging a first reinforcing rib, a second reinforcing rib, a third reinforcing rib and a fourth reinforcing rib, thereby achieving the stability of the chip resistor, but the chip resistor has no good heat dissipation effect, can emit a large amount of heat when the chip resistor works, and even can damage the circuit board when the heat is serious, inconvenience is brought to the use of the chip resistor by people.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a structure of a high-power precise chip resistor, which solves the problems that the chip resistor does not have a good heat dissipation effect, can dissipate a large amount of heat during working, can even damage a circuit board when the heat is serious, and brings inconvenience to people in using the chip resistor.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a structure of accurate chip resistor of high power, includes the resistance body, the lower surface of resistance body and the last fixed surface of rubber shell are connected, and the upper surface of rubber shell and the lower fixed surface of two fixed blocks are connected, and the fixed block is located the right side of resistance body, and the opposite face of two fixed blocks respectively with the one side joint that two bearings were kept away from mutually, and the opposite face of two bearings cup joints with the both ends of pivot respectively, the upper surface of pivot and the lower fixed surface on protective housing right side are connected, the first bleeder vent of a plurality of has been seted up respectively to the left and right sides face of protective housing.
The upper surface and the lower surface of the rubber shell are both provided with second air holes, the upper surface and the lower surface of the inner wall of the rubber shell are respectively fixedly connected with two ends of a second spring, the lower surface of the rubber shell is respectively fixedly connected with the upper surfaces of the supporting plates, the number of the supporting plates is four, the four supporting plates are distributed on the front side and the rear side of the lower surface of the rubber shell in pairs, the opposite surfaces of the two supporting plates are respectively fixedly connected with the left side surface and the right side surface of the reinforcing plate, the front surface of the reinforcing plate is provided with a ventilation opening, and the far sides of the two supporting plates are respectively fixedly connected with the opposite sides of the two guide rods, the lower parts of the guide rods are provided with a plurality of convex blocks, and a plurality of lugs are uniformly distributed on the surface far away from the two supporting plates, the lower surfaces of the supporting plates are welded with the upper surface of the liquid tin fixing cavity, and the lower surface of the liquid tin fixing cavity is fixedly connected with the upper surface of the circuit board.
Preferably, the through-hole has been seted up to the left surface of protective housing, and the inside of through-hole is provided with the slide bar, and the surface of slide bar has cup jointed first limiting plate, the right flank of first limiting plate and the left surface overlap joint of protective housing, the left surface of first limiting plate and the right-hand member fixed connection of first spring, the left end of first spring and the right flank fixed connection of bracing piece, the right flank joint of bracing piece has the sliding sleeve, and the sliding sleeve cup joints the surface at the slide bar, the left surface of sliding sleeve and the right flank overlap joint of second limiting plate, and the second limiting plate cup joints the surface at the slide bar, the left end of slide bar and the right flank fixed connection of pull ring.
Preferably, the bottom of bracing piece and the upper surface fixed connection of connecting block, and the right flank of connecting block and the left surface fixed connection of rubber shell.
Preferably, the liquid tin fixing cavity is rectangular, and the upper surface and the lower surface of the liquid tin fixing cavity are communicated.
Preferably, the number of the ventilation openings is four, and the four ventilation openings are respectively arranged on the front surfaces of the two reinforcing plates.
Preferably, the upper surface and the lower surface of the inner wall of the rubber shell are respectively and fixedly connected with two ends of the second springs, and the number of the second springs is a plurality.
(III) advantageous effects
The invention provides a structure of a high-power precise chip resistor, which has the following beneficial effects:
1. this structure of accurate chip resistor of high power, through the protective housing, the bearing, the apparatus further comprises a rotating shaft, the through-hole, the slide bar, first limiting plate, the second limiting plate, a first spring, cooperation between sliding sleeve and the pull ring, people drive the slide bar and move left through pulling the pull ring left, people's upset protective housing covers the resistance body, people loosen the pull ring, first spring utilizes self elasticity to promote first limiting plate and moves right, first limiting plate moves right and drives the slide bar and move right to stretching into in the through-hole that the protective housing left surface seted up, thereby fix the protective housing in the top of resistance body, the protective housing can shelter from the dust.
2. This structure of accurate chip resistor of high power through the cooperation between the fixed chamber of guide rod, lug and liquid tin, through setting up the lug, has increaseed the area of contact of liquid tin with the backup pad for the fixed more stable of resistance body on the circuit board.
3. According to the structure of the high-power precise chip resistor, the resistor body is elevated by the support plate through the first air hole, the second air hole, the vent hole and the support plate, so that the ventilation of the resistor body principle circuit board, the first air hole, the second air hole and the vent hole is enhanced, the heat dissipation of the resistor body is facilitated, and the high-power precise chip resistor is compact in structure, reasonable in design and high in practicability.
Drawings
FIG. 1 is a schematic cross-sectional view of the front view of the present invention;
fig. 2 is an enlarged schematic structural view at a point a of the present invention.
In the figure: 1 resistor body, 2 rubber shell, 3 fixed block, 4 bearings, 5 pivots, 6 protective cases, 7 first bleeder vent, 8 through-holes, 9 first limiting plate, 10 slide bars, 11 first spring, 12 bracing pieces, 13 sliding sleeves, 14 second limiting plates, 15 pull rings, 16 connecting blocks, 17 second springs, 18 second bleeder vents, 19 supporting plates, 20 reinforcing plates, 21 vent, 22 guide rods, 23 lugs, 24 liquid tin fixed cavities and 25 circuit boards.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides a technical solution: a structure of a high-power precise chip resistor comprises a resistor body 1, wherein the lower surface of the resistor body 1 is fixedly connected with the upper surface of a rubber shell 2, the upper surface and the lower surface of the inner wall of the rubber shell 2 are respectively fixedly connected with two ends of a second spring 17, the number of the second springs 17 is a plurality, the rubber shell 2 and the springs are arranged, so that the pressure borne by the resistor body 1 is reduced when people install the resistor body 1, the upper surface of the rubber shell 2 is fixedly connected with the lower surfaces of two fixed blocks 3, the fixed blocks 3 are positioned on the right side of the resistor body 1, the opposite surfaces of the two fixed blocks 3 are respectively clamped with one surface far away from two bearings 4, the opposite surfaces of the two bearings 4 are respectively sleeved with two ends of a rotating shaft 5, the upper surface of the rotating shaft 5 is fixedly connected with the lower surface on the right side of a protective shell 6, a plurality of first air vents 7 are respectively arranged on the left side surface, the left side surface of the protective shell 6 is provided with a through hole 8, a slide bar 10 is arranged in the through hole 8, the outer surface of the slide bar 10 is sleeved with a first limiting plate 9, the right side surface of the first limiting plate 9 is overlapped with the left side surface of the protective shell 6, the left side surface of the first limiting plate 9 is fixedly connected with the right end of a first spring 11, the left end of the first spring 11 is fixedly connected with the right side surface of a support bar 12, the right side surface of the support bar 12 is clamped with a sliding sleeve 13, the bottom end of the support bar 12 is fixedly connected with the upper surface of a connecting block 16, the right side surface of the connecting block 16 is fixedly connected with the left side surface of the rubber shell 2, the sliding sleeve 13 is sleeved on the outer surface of the slide bar 10, the left side surface of the sliding sleeve 13 is overlapped with the right side surface of a second limiting plate 14, the second limiting plate 14 is sleeved on the outer surface of the slide bar 10, people overturn the protective housing 6 and cover resistance body 1, and people loosen pull ring 15, and first spring 11 utilizes self elasticity to promote first limiting plate 9 and move right, and first limiting plate 9 moves right and drives slide bar 10 and move right to stretch into in the through-hole 8 that protective housing 6 left surface was seted up to fixing protective housing 6 in resistance body 1's top, protective housing 6 can shelter from the dust.
The upper and lower surfaces of the rubber shell 2 are both provided with second air holes 18, air can radiate the resistor body 1 through the second air holes 18 by arranging the second air holes 18, thereby playing a certain radiating role on the resistor body 1, the upper and lower surfaces of the inner wall of the rubber shell 2 are respectively fixedly connected with two ends of a second spring 17, the lower surface of the rubber shell 2 is respectively fixedly connected with the upper surfaces of supporting plates 19, the number of the supporting plates 19 is four, the four supporting plates 19 are distributed on the front and back sides of the lower surface of the rubber shell 2 in pairs, the opposite surfaces of the two supporting plates 19 are respectively fixedly connected with the left and right side surfaces of a reinforcing plate 20, the front surface of the reinforcing plate is provided with air vents 21, the number of the air vents 21 is four, the four air vents 21 are respectively arranged on the front surfaces of the two reinforcing plates 20, through arranging the air vents 21, the air can be more convenient to circulate, playing a certain, and the one side that two backup pads 19 kept away from mutually respectively with two guide bar 22 to opposite face fixed connection, the below of guide bar 22 is provided with lug 23, the quantity of lug 23 is a plurality of, through setting up lug 23, the area of contact of liquid tin with backup pad 19 has been increaseed, make the fixed more stable of resistor body 1 on circuit board 25, and a plurality of lug 23 evenly distributed is in the one side that two backup pads 19 kept away from mutually, the lower surface of backup pad 19 and the upper surface welding of the fixed chamber 24 of liquid tin, the shape of the fixed chamber 24 of liquid tin is the rectangle, and the upper surface and the lower surface of the fixed chamber 24 of liquid tin are linked together, through setting up the fixed chamber 24 of liquid tin, thereby make liquid tin get into the fixed chamber 24 of liquid tin and just can fix resistor body 1 on circuit board 25, the lower surface fixed connection of the fixed chamber 24 of liquid tin and the upper surface of.
During the use, people place resistance body 1 in the position that needs are fixed, people drip liquid tin to four drainage poles respectively, liquid tin flows into liquid tin fixed cavity 24 along drainage pole through lug 23, thereby fix resistance body 1 on circuit board 25, people drive slide bar 10 and move left through pulling pull ring 15 left, people upset protective housing 6 covers resistance body 1, people loosen pull ring 15, first spring 11 utilizes self elasticity to promote first limiting plate 9 and moves right, first limiting plate 9 moves right and drives slide bar 10 and move right to stretch into in the through-hole 8 that protective housing 6 left surface was seted up, can.
In conclusion, can obtain, 1, this structure of accurate chip resistor of high power, through the protective housing 6, the bearing 4, the pivot 5, through-hole 8, the slide bar 10, first limiting plate 9, second limiting plate 14, first spring 11, the cooperation between sliding sleeve 13 and the pull ring 15, people move left through pulling pull ring 15 drive slide bar 10 left side pulling left, people overturn protective housing 6 and cover resistance body 1, people loosen pull ring 15, first spring 11 utilizes self elasticity to promote first limiting plate 9 and moves right, first limiting plate 9 moves right and drives slide bar 10 and move right to stretch into in the through-hole 8 that protective housing 6 left surface was seted up, thereby fix protective housing 6 in the top of resistance body 1, protective housing 6 can shelter from the dust.
2. This structure of accurate chip resistor of high power through the cooperation between guide bar 22, lug 23 and the fixed chamber 24 of liquid tin, through setting up lug 23, has increaseed the area of contact of liquid tin with backup pad 19 for resistance body 1 is fixed more stable on circuit board 25.
3. According to the structure of the high-power precise chip resistor, the resistor body 1 is elevated by the support plate 19 through the first air hole 7, the second air hole 18, the vent hole 21 and the support plate 19, so that the circulation of air is enhanced by the principle circuit board 25 of the resistor body 1, the first air hole 7, the second air hole 18 and the vent hole 21, and the heat dissipation of the resistor body 1 is facilitated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a structure of accurate chip resistor of high power, includes resistance body (1), its characterized in that: the lower surface of the resistor body (1) is fixedly connected with the upper surface of the rubber shell (2), the upper surface of the rubber shell (2) is fixedly connected with the lower surfaces of the two fixing blocks (3), the fixing blocks (3) are positioned on the right side of the resistor body (1), opposite surfaces of the two fixing blocks (3) are respectively connected with one surface, away from the two bearings (4), of the two bearings in a clamping mode, opposite surfaces of the two bearings (4) are respectively sleeved with two ends of the rotating shaft (5), the upper surface of the rotating shaft (5) is fixedly connected with the lower surface of the right side of the protective shell (6), and a plurality of first air holes (7) are respectively formed in the left side surface and the right side surface of the protective shell (;
the upper surface and the lower surface of the rubber shell (2) are respectively provided with a second air hole (18), the upper surface and the lower surface of the inner wall of the rubber shell (2) are respectively fixedly connected with two ends of a second spring (17), the lower surface of the rubber shell (2) is respectively fixedly connected with the upper surfaces of the supporting plates (19), the number of the supporting plates (19) is four, every two of the four supporting plates (19) are distributed on the front side and the rear side of the lower surface of the rubber shell (2), opposite surfaces of the two supporting plates (19) are respectively fixedly connected with the left side surface and the right side surface of the reinforcing plate (20), the front surface of the reinforcing plate is provided with a vent (21), one surface, far away from the two supporting plates (19), of the two supporting plates is respectively fixedly connected with opposite surfaces of the two guide rods (22), the lower parts of the guide rods (22) are provided with convex blocks (23), the number of the convex blocks (23) is a plurality, and the convex blocks (23), the lower surface of the supporting plate (19) is welded with the upper surface of the liquid tin fixing cavity (24), and the lower surface of the liquid tin fixing cavity (24) is fixedly connected with the upper surface of the circuit board (25).
2. The structure of the high-power precise chip resistor as claimed in claim 1, wherein: a through hole (8) is arranged on the left side surface of the protective shell (6), a slide bar (10) is arranged in the through hole (8), and the outer surface of the sliding rod (10) is sleeved with a first limit plate (9), the right side surface of the first limit plate (9) is lapped with the left side surface of the protective shell (6), the left side surface of the first limit plate (9) is fixedly connected with the right end of the first spring (11), the left end of the first spring (11) is fixedly connected with the right side surface of the supporting rod (12), the right side surface of the supporting rod (12) is clamped with a sliding sleeve (13), and the sliding sleeve (13) is sleeved on the outer surface of the sliding rod (10), the left side surface of the sliding sleeve (13) is lapped with the right side surface of the second limit plate (14), and the second limit plate (14) is sleeved on the outer surface of the sliding rod (10), and the left end of the sliding rod (10) is fixedly connected with the right side surface of the pull ring (15).
3. The structure of the high-power precise chip resistor as claimed in claim 2, wherein: the bottom of bracing piece (12) and the last fixed surface of connecting block (16) are connected, and the right flank of connecting block (16) and the left surface fixed connection of rubber shell (2).
4. The structure of the high-power precise chip resistor as claimed in claim 1, wherein: the liquid tin fixing cavity (24) is rectangular, and the upper surface and the lower surface of the liquid tin fixing cavity (24) are communicated.
5. The structure of the high-power precise chip resistor as claimed in claim 1, wherein: the number of the ventilation openings (21) is four, and the four ventilation openings (21) are respectively arranged on the front surfaces of the two reinforcing plates (20).
6. The structure of the high-power precise chip resistor as claimed in claim 1, wherein: the upper surface and the lower surface of the inner wall of the rubber shell (2) are respectively fixedly connected with two ends of a second spring (17), and the number of the second springs (17) is a plurality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510741.2A CN108711477B (en) | 2018-05-24 | 2018-05-24 | Structure of high-power precise chip resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510741.2A CN108711477B (en) | 2018-05-24 | 2018-05-24 | Structure of high-power precise chip resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108711477A CN108711477A (en) | 2018-10-26 |
| CN108711477B true CN108711477B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810510741.2A Expired - Fee Related CN108711477B (en) | 2018-05-24 | 2018-05-24 | Structure of high-power precise chip resistor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112071536A (en) * | 2020-08-28 | 2020-12-11 | 吴佳昌 | Chip type thin film fixed resistor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4400105C2 (en) * | 1993-11-24 | 2000-01-20 | Eldis Ehmki & Schmid Ohg | Housing resistance |
| DE102009053145A1 (en) * | 2009-11-05 | 2011-05-12 | Phoenix Contact Gmbh & Co. Kg | Overvoltage protection device, has thermal expandable material arranged within housing such that pole of varistor does not stay in electrically conductive contact with connection elements |
| CN201576518U (en) * | 2010-01-19 | 2010-09-08 | 南京萨特科技发展有限公司 | High power precise chip resistor |
| CN201859726U (en) * | 2010-09-10 | 2011-06-08 | 东莞市福德电子有限公司 | Resistance box |
| CN103137274A (en) * | 2013-03-05 | 2013-06-05 | 东莞市晴远电子有限公司 | High-power chip resistor |
| CN105304241B (en) * | 2014-06-20 | 2017-11-17 | 昆山厚声电子工业有限公司 | Thick film high power low resistance patch resistor and its manufacture method |
| CN205159011U (en) * | 2015-12-04 | 2016-04-13 | 东莞市平尚电子科技有限公司 | Paster precision resistor |
| CN207250248U (en) * | 2017-09-06 | 2018-04-17 | 杨慧柳 | A kind of senior middle school physics teaching slide rheostat with protective device |
| CN207397826U (en) * | 2017-10-09 | 2018-05-22 | 惠州市大容电子科技有限公司 | A kind of paster type resistor of excellent radiation performance |
| CN107749330A (en) * | 2017-10-09 | 2018-03-02 | 惠州市大容电子科技有限公司 | A kind of paster type resistor of excellent radiation performance |
| CN107622845A (en) * | 2017-10-26 | 2018-01-23 | 梁溪区昊星工业设计工作室 | A kind of thermistor mount |
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2018
- 2018-05-24 CN CN201810510741.2A patent/CN108711477B/en not_active Expired - Fee Related
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