CN211294770U - Chip resistor - Google Patents

Abstract

The utility model relates to a chip resistor, including the resistance piece, resistance piece both ends are fixed with first inserted sheet and second inserted sheet respectively, first inserted sheet with including first short piece and first long piece, first short piece is fixed on the electrode of the one end of resistance piece, the one end of resistance piece is kept away from to first short piece is fixed to first long piece, the second inserted sheet includes second short piece and the long piece of second, the short piece of second is fixed in the one end of keeping away from first inserted sheet in the resistance piece, the one end fixed connection of resistance piece is kept away from to the long piece of second and the short piece of second, the position of first short piece and the short piece of second on the resistance piece is kept away from each other. The utility model has the advantages of the space that occupies is less on the PCB board when establishing ties.

Description

Chip resistor

Technical Field

The utility model belongs to the technical field of electronic component's technique and specifically relates to a chip resistor is related to.

Background

The resistor is a current limiting element, the resistance of the resistor is fixed, the resistor is generally two pins, and after the resistor is connected in a circuit, the resistor can limit the current passing through a branch connected with the resistor.

The existing chip resistor is one of metal glass glaze resistors. The resistor is prepared by mixing metal powder and glass glaze powder and printing the mixture on a substrate by a screen printing method, has the advantages of moisture resistance, high temperature resistance and small temperature coefficient, is generally used on a PCB (printed Circuit Board), can greatly save the space cost of a circuit and enables the design to be more refined.

The above prior art solutions have the following drawbacks: when people weld the chip resistor on the PCB, the situation that the chip resistor is too small sometimes occurs, people need to increase the size of the resistor by connecting a plurality of chip resistors in series, however, a plurality of independent chip resistors are connected in series and are all welded on the PCB, and the occupied space is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a chip resistor, it has the little advantage of occupation space when establishing ties on the PCB board.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a chip resistor, includes resistance block, resistance block both ends are fixed with first inserted sheet and second inserted sheet respectively, and first inserted sheet includes first short piece and first long piece, and first short piece is fixed on the electrode of the one end of resistance block, and the one end of resistance block is kept away from to first short piece is fixed to first long piece, and the second inserted sheet includes the short piece of second and the long piece of second, and the short piece of second is fixed in the one end of keeping away from first inserted sheet in resistance block, and the one end fixed connection of resistance block is kept away from to the short piece of second and second, and the position of first short piece and second short piece on resistance block is kept away from each other.

By adopting the technical scheme, the first long sheet of one chip resistor is inserted into the gap between the second long sheet of the other chip resistor adjacent to the first long sheet of the chip resistor and the resistor block, so that the two adjacent resistors can be fixedly connected.

The utility model discloses further set up to: the first inserting sheet and the second inserting sheet are centrosymmetric about the central axis of the resistor block, and the opening direction formed between the first long sheet and the resistor block is opposite to the opening direction formed between the second long sheet and the resistor block.

Through adopting above-mentioned technical scheme, the opening orientation of formation between first long piece and the resistance piece and the opening orientation of formation between second long piece and the resistance piece are opposite more convenient the second long piece that closes on and insert between current first long piece and the resistance piece, make people only need to weld the one end of chip resistor on the circuit board when fixed chip resistor, other chip resistors insert first long piece in proper order in the clearance between the second long piece of preceding chip resistor and the resistance piece, last long piece welding of second with last chip resistor can realize the series connection of a plurality of this chip resistors on the circuit board, because the welding point is less, so occupation space is littleer.

The utility model discloses further set up to: and a reinforcing component is arranged between the first long sheet and the second long sheet, and the plurality of resistance blocks are connected in series to form a large resistor through the reinforcing component.

Through adopting above-mentioned technical scheme, the reinforcement subassembly can make two adjacent chip resistor connect inseparabler, is difficult for droing.

The utility model discloses further set up to: consolidate the subassembly and include inserted bar and caulking groove, the inserted bar is fixed first long card is close to one side of resistance piece, the caulking groove is seted up the long card of second is close to one side of resistance piece, the inserted bar is arranged in the caulking groove on the adjacent resistance piece, and with the inner wall of caulking groove is contradicted each other.

Through adopting above-mentioned technical scheme, during the caulking groove of a preceding chip resistor is inserted to the inserted bar of a back chip resistor, can increase the area of contact between the first long piece of a back chip resistor and the second long piece of a preceding chip resistor, make the frictional force between two chip resistors bigger, more difficult separation, the inseparabler of connection.

The utility model discloses further set up to: the resistor block is characterized in that radiating fins are attached to the outer wall of the resistor block, insulating rings are fixed to two ends of each radiating fin, the radiating fins are fixed to four side faces of the resistor block, and the insulating rings are located between the radiating fins and the poles of the resistor block.

Through adopting above-mentioned technical scheme, resistance can produce heat when the circular telegram, and the fin can accelerate the heat-generating loss of resistance, and the insulating ring can prevent that the fin from direct and paster resistance's the contact of the two poles of the earth and causing the short circuit.

The utility model discloses further set up to: the first inserting piece and the second inserting piece are respectively and fixedly connected with the electrodes at the two ends of the resistance block.

Through adopting above-mentioned technical scheme, first inserted sheet and second inserted sheet respectively with the two poles of the earth fixed connection at resistance piece both ends, people are when welding this chip resistor, only need to weld the second inserted sheet of the last chip resistor of first inserted sheet of first chip resistor can realize the fixed of a plurality of chip resistors on the circuit board.

The utility model discloses further set up to: the first inserting piece and the second inserting piece are made of copper materials.

By adopting the technical scheme, the conductive performance of copper is better than that of common metal, the transmission of current is more facilitated, and the price is relatively low.

The utility model discloses further set up to: the insulating ring is made of ceramic, and the radiating fins are made of copper.

By adopting the technical scheme, the ceramic has good insulativity, and the copper has good heat conductivity and can accelerate the dissipation of resistance heat.

To sum up, the utility model discloses a beneficial technological effect does:

1. the first long sheet of one chip resistor is inserted into a gap between the second long sheet of the other chip resistor adjacent to the first long sheet of the one chip resistor and the resistor block, so that the contact area between the two chip resistors can be increased, the friction force between the two chip resistors is further increased, the two chip resistors are not easy to fall off, and the first inserting sheet of one chip resistor is abutted against the second inserting sheet of the other chip resistor, so that the two adjacent resistors can be electrically connected, and the resistor expansion is realized;

2. the radiating fins can accelerate the dissipation of heat in the resistance block, and the insulating rings can prevent the radiating fins from being in direct contact with two ends of the resistance block, so that short circuit is avoided.

Drawings

Fig. 1 is a schematic view of the overall structure of two serially connected devices of the present invention;

fig. 2 is a schematic view of two cross-sectional structures of the present invention after being connected in series;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure, 1, a resistance block; 2. a first tab; 3. a second insert; 21. a first tab; 22. a first long sheet; 31. a second tab; 32. a second long sheet; 4. a reinforcement assembly; 41. embedding a rod; 42. caulking grooves; 5. a heat sink; 6. an insulating ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a chip resistor, including resistance block 1, the both ends of resistance block 1 are provided with first inserted sheet 2 and second inserted sheet 3 respectively, the material of two kinds of inserted sheets all adopts copper, first inserted sheet 2 includes first short piece 21 and first long piece 22, second inserted sheet 3 includes second short piece 31 and second long piece 32, the one end fixed connection of first short piece 21 is in the one end of first long piece 22, the one end fixed connection of second short piece 31 is in the one end of second long piece 32, the one end that first long piece 22 was kept away from to first short piece 21 is fixed on one electrode of resistance block 1, the one end fixed connection that second long piece 32 was kept away from to second short piece 31 is on the electrode that first short piece 21 was kept away from to resistance block 1, the opening orientation that forms between first long piece 22 and the resistance block 1 is opposite with the opening orientation that forms between second long piece 32 and the resistance block 1.

The reinforcing component 4 is arranged between the first long piece 22 and the second long piece 32 which are adjacent to each other of the two adjacent chip resistors, the reinforcing component 4 comprises an embedded rod 41 and an embedded groove 42, the embedded rod 41 is fixed on one side, close to the resistor block 1 where the first long piece 22 is located, of the first long piece 22, the length direction of the embedded rod 41 is parallel to the length direction of the first long piece 22, the embedded groove 42 is formed in one side, close to the resistor block 1 where the second long piece 32 is located, of the second long piece 32, the length direction of the embedded groove 42 is parallel to the length direction of the second long piece 32, when the two adjacent resistor blocks 1 are connected together, the embedded rod 41 on the first long piece 22 on one resistor block 1 is inserted into the embedded groove 42 formed in the second long piece 32 on the other resistor block 1, and connection between the two resistor blocks 1 is achieved.

Referring to fig. 2 and 3, a heat sink 5 made of copper is attached to a side wall of the resistance block 1, insulating rings 6 made of ceramic are respectively sleeved at two ends of the resistance block 1, and the heat sink 5 is located between the insulating rings 6 at the two ends of the resistance block 1. The insulating ring 6 can prevent the heat sink 5 from contacting the welding end of the resistor block 1, and prevent the two ends of the resistor block 1 from short circuit due to contact with the heat sink 5.

The implementation principle of the embodiment is as follows: when using the chip resistor, a user can directly weld the chip resistor on the circuit board; when one chip resistor is not enough, a user can align the first long sheet 22 of one chip resistor to a gap between the second long sheet 32 of the other chip resistor and the other chip resistor, the embedded rod 41 corresponds to the embedded groove 42, the chip resistor is pressed to the other chip resistor, the embedded rod 41 is inserted into the corresponding embedded groove 42, the first long sheet 22 and the second long sheet 32 are enabled to be mutually abutted, the two chip resistors are connected in series, the resistance value of the chip resistor is increased, the included resistance value of the chip resistor is increased, and then the user can weld the chip resistors connected in series on the circuit board.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A chip resistor comprising a resistor block (1), characterized in that: resistance piece (1) both ends are fixed with first inserted sheet (2) and second inserted sheet (3) respectively, first inserted sheet (2) are including first short card (21) and first long card (22), first short card (21) are fixed on the electrode of the one end of resistance piece (1), first long card (22) are fixed and are kept away from the one end of resistance piece (1) in first short card (21), second inserted sheet (3) are including second short card (31) and second long card (32), the one end of keeping away from first inserted sheet (2) in resistance piece (1) is fixed in second short card (31), the one end fixed connection of keeping away from block (1) in second long card (32) and second short card (31), first short card (21) and the position of second short card (31) on resistance piece (1) are kept away from each other.

2. A chip resistor according to claim 1, wherein: the first inserting sheet (2) and the second inserting sheet (3) are centrosymmetric about the central axis of the resistor block (1), and the opening direction formed between the first long sheet (22) and the resistor block (1) is opposite to the opening direction formed between the second long sheet (32) and the resistor block (1).

3. A chip resistor according to claim 2, wherein: a reinforcing component (4) is arranged between the first long sheet (22) and the second long sheet (32), and the plurality of resistance blocks (1) are connected in series through the reinforcing component (4) to form a large resistor.

4. A chip resistor according to claim 3, wherein: consolidate subassembly (4) including inserted bar (41) and caulking groove (42), inserted bar (41) are fixed first long piece (22) are close to one side of resistance piece (1), caulking groove (42) are seted up second long piece (32) are close to one side of resistance piece (1), inserted bar (41) are arranged in caulking groove (42) on adjacent resistance piece (1), and with the inner wall of caulking groove (42) contradicts each other.

5. A chip resistor according to claim 1, wherein: the resistor block is characterized in that radiating fins (5) are attached to the outer wall of the resistor block (1), insulating rings (6) are fixed to the two ends of each radiating fin (5), the radiating fins (5) are fixed to the four side faces of the resistor block (1), and the insulating rings (6) are located between the radiating fins (5) and poles of the resistor block (1).

6. A chip resistor according to claim 5, wherein: the first inserting sheet (2) and the second inserting sheet (3) are fixedly connected with electrodes at two ends of the resistor block (1) respectively.

7. A chip resistor according to claim 6, wherein: the first inserting piece (2) and the second inserting piece (3) are made of copper materials.

8. A chip resistor according to claim 5, wherein: the insulating ring (6) is made of ceramic, and the radiating fins (5) are made of copper.

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