CN213183808U

CN213183808U - Arrayed non-inductive cement resistor for automobile audio

Info

Publication number: CN213183808U
Application number: CN202022270208.9U
Authority: CN
Inventors: 丘振杰; 王福来; 林裕彬
Original assignee: World Alliance Electronics Huizhou Co ltd
Current assignee: World Alliance Electronics Huizhou Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-05-11
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses a car is arrangement noninductive cement resistance for stereo set belongs to cement resistance technical field, including the resistive element, the resistive element contains three to five resistance pieces, three to five the structural connection of resistance piece adoption series arrangement type, three to five PIN feet, per two are installed to the lower extreme of resistive element the resistance value of resistance piece between the PIN foot is convertible, and the mode that adopts spot welding is connected between chip and tinned copper clad steel or the tinned copper wire PIN, the resistive element outside is packaged with the ceramic shell, in the resistive element inserts ceramic shell upside down, three to five through-holes have been beaten to the below sealed end of ceramic shell, every the PIN foot of resistive element runs through the through-hole that corresponds the position on the ceramic shell and exposes in the through-hole from the ceramic shell. This cement resistor is through establishing ties three to five resistance blocks to corresponding installation PIN foot makes the resistance between per two PIN feet all different, and is small, with low costs, and the PIN foot is stable, and the encapsulation thick liquids is not hard up, and the reliability is high.

Description

Arrayed non-inductive cement resistor for automobile audio

Technical Field

The utility model belongs to the technical field of the cement resistance technique and specifically relates to a car stereo set is with arrangement noninductive cement resistance is related to.

Background

The element of the non-inductive cement resistor is made of precise alloy materials, a sheet resistance core is manufactured through a special process, and the non-inductive cement resistor is formed by packaging a high-frequency ceramic shell, is widely applied to circuits such as televisions, displays, computer peripheral equipment, automatic control systems, variable frequency air conditioners, power supply equipment, high-grade sound equipment and the like, and the resistor suitable for automobile sound equipment is designed.

The cement resistor without the inductive chip used in the current market has the following problems:

firstly, the cement resistor of the non-inductive chip is a resistance value of 2 pins, and 2-4 resistors are needed to be connected in series and in parallel for use in some special occasions, so that the occupied area is large, and the plug-in material and labor cost are high.

Secondly, the alloy sheet in the ceramic cement resistor is punched by adopting an iron-chromium-aluminum alloy strip material, the iron alloy can be slowly oxidized and the resistance value can be increased when the ceramic cement resistor is electrified for a long time at high temperature, meanwhile, the temperature coefficient of the product is larger, generally +/-350 to +/-1000 PPM/DEG C, and the reliability is poorer.

Thirdly, the opening direction of the ceramic shell faces to the PCB, and the phenomenon that the packaging slurry is loosened and even falls off easily occurs due to the long-term vibration of the product in the running process of an automobile.

Fourthly, because the pin is in the ceramic shell opening direction, the foot distance is not fixed well, so can not paste the board completely when the customer installs, and product pin vibration resistance is relatively poor, needs to use the fixed mode of production of point gluing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car stereo set is with arrangement noninductive cement resistance to solve area occupied among the prior art big, with high costs, the reliability is poor, and the encapsulation thick liquids easily drops, the relatively poor technical problem of pin shock resistance.

The utility model provides a car stereo set is with arrangement noninductive cement resistance, including the resistive element, the resistive element contains three to five resistance pieces, three to five the structural connection of series arrangement type is adopted to the resistance piece.

Furthermore, the resistance block adopts a manganin, constantan, nickel-chromium or cammar alloy belt punching non-inductive chip.

Furthermore, three to five PIN PINs are installed at the lower end of the resistor body, the resistance value of the resistance block between every two PIN PINs is changeable, and the chip is connected with the tinned copper clad steel or tinned copper wire PINs in a spot welding mode.

Furthermore, the outer side of the resistor body is sealed by a ceramic shell, the ceramic shell is made of talc ceramic, and the upper end opening and the lower end of the ceramic shell are sealed.

Furthermore, the resistor body is inversely inserted into the ceramic shell, three to five through holes are formed in the sealing end below the ceramic shell, the through holes are of a structure with a large top and a small bottom, the hole distance between every two adjacent through holes is fixed, a PIN0 PIN of each resistor body penetrates through the through hole in the corresponding position on the ceramic shell and is exposed out of the through hole of the ceramic shell, and the contact surface of the PIN PIN and the through hole is filled with packaging slurry.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the resistor body is of a structure that a plurality of resistor blocks are arranged in series, the resistor body is provided with three to five resistor blocks, the resistance value between every two resistor blocks is different, the resistor body can be changed according to the requirements of customers, the occupied area is small, the plug-in material and labor cost is low, and the application range is wide.

Secondly, the resistor body adopts a non-inductive chip stamped by manganin, constantan, nickel-chromium and a Kalma alloy belt, is not easy to oxidize at high temperature, and can solve the problem that the resistor body is not high-temperature resistant and can not be oxidized; meanwhile, the temperature coefficient of the product is relatively small, and is generally +/-50- +/-200 PPM/DEG C.

Thirdly, this resistance adopts the sealed end of ceramic shell to punch out the mode of foot, and the PIN foot of resistance exposes from the ceramic shell through-hole, stops the not hard up possibility of PIN on the one hand, and the not hard up phenomenon that drops even of encapsulation thick liquids can not appear, and on the other hand is because the pitch-row is fixed, and resistance can cooperate with the PCB jack well in the assembly.

Fourthly, the packaging ceramic shell of the resistor is made of talc ceramic, has good hardness and heat dissipation performance, can absorb heat generated by electrifying the resistor core in time, and ensures that the resistance value of the resistor is not damaged.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the three PIN resistors along the central axis of the present invention;

FIG. 2 is a cross-sectional view of the five PIN resistors along the central axis of the present invention;

FIG. 3 is a circuit diagram of a three PIN PIN resistor of the present invention;

FIG. 4 is a circuit diagram of a five-PIN PIN resistor edge of the present invention;

fig. 5 is a cross-sectional view of the ceramic shell along the central axis in the three PIN resistor of the present invention;

FIG. 6 is a top view of the ceramic shell in the three PIN resistor of the present invention;

fig. 7 is a cross-sectional view of the ceramic shell along the central axis in the five PIN resistors of the present invention;

fig. 8 is a top view of the ceramic shell in the five PIN resistor of the present invention.

Reference numerals: the resistor comprises a resistor body 1, a resistor block 2, a PIN PIN 3, a ceramic shell 4, a through hole 5 and packaging slurry 6.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following combines fig. 1 to fig. 8 to show, the embodiment of the utility model provides an arrangement type noninductive cement resistor for car audio, including the resistive element 1, resistive element 1 contains three to five resistance blocks 2, three to five resistance block 2 adopts the structural connection of series arrangement type, directly will three to five like this resistance block 2 establishes ties, and area is little to plug-in materials, cost of labor are low.

The resistance block 2 adopts a non-inductive chip stamped by a manganin, constantan, nickel-chromium or Kalma alloy belt, is not easy to oxidize at high temperature, and can solve the problem that the resistance block cannot resist high temperature and is oxidized; meanwhile, the temperature coefficient of the product is smaller, generally +/-50 to +/-200 PPM/DEG C, the sectional area of the alloy sheet is designed to be the largest, the largest power margin is used for meeting the surge current which is possibly met by the product, and the temperature coefficient of the material is smaller than that of the iron-chromium-aluminum alloy material.

The resistor is characterized in that three to five PIN PINs 3 are mounted at the lower end of the resistor body 1, the resistance value of the resistor block 2 between every two PIN PINs 3 is changeable, the chip is connected with the tinned copper clad steel or tinned copper wire PINs in a spot welding mode, three to five support legs of the resistor body 1 are provided with a resistance value R1 from 1# leg to 2# leg, and a resistance value R2 from 2# leg to 3# leg are provided with a resistance value R2. The 1# pin to the 3# pin are resistance values R1, the 1# pin to the 4# pin are resistance values r2... so on, wherein the relationship among R1, R2, R3 and R4 is that R1 ═ R2 ═ R3 ≠ R4 or R1 ≠ R2 ≠ R3 ≠ R4, and meanwhile, the power designs of R1, R2, R3 and R4 may also be different, and specifically may be designed according to customer requirements.

The outer side of the resistor body 1 is packaged by a ceramic shell 4, the ceramic shell 4 is made of talc ceramic, the ceramic shell has good hardness and heat dissipation performance, heat generated by electrifying the resistor core can be absorbed in time, resistance of the resistor is guaranteed not to be damaged, and the lower end of an opening at the upper end of the ceramic shell 4 is sealed.

The resistor body 1 is inversely inserted into the ceramic shell 4, three to five through holes 5 are punched at the lower sealing end of the ceramic shell 4, the through holes 5 are of a structure with a large upper part and a small lower part, the hole distance between every two adjacent through holes 5 is fixed, the PIN0 PIN of each resistor body 1 penetrates through the through hole 5 at the corresponding position on the ceramic shell 4 and is exposed out of the through hole 5 of the ceramic shell 4, the PIN PIN 3 of the resistor body 1 is exposed out of the through hole 5 of the ceramic shell, and the contact surface of the PIN PIN 3 and the through hole 5 is filled with the packaging slurry 6, so that the possibility of PIN looseness is avoided, the phenomenon that the packaging slurry 6 is loosened and even falls off is avoided, and the resistor can be well matched with a PCB jack in assembly due to the fixed hole distance.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The arrayed non-inductive cement resistor for the automobile audio is characterized by comprising a resistor body (1), wherein the resistor body (1) comprises three to five resistor blocks (2), and the three to five resistor blocks (2) are connected in a series array type structure.

2. The arrayed noninductive cement resistor for the automobile audio system as claimed in claim 1, wherein the resistor block (2) is made of manganin, constantan, nichrome or cammar alloy with punched noninductive chip.

3. The arrayed noninductive cement resistor for the automobile audio system as claimed in claim 1, wherein the lower end of the resistor body (1) is provided with three to five PIN PINs (3), the resistance value of the resistor block (2) between every two PIN PINs (3) can be changed, and the chip is connected with the tinned copper clad steel or tinned copper wire PIN in a spot welding manner.

4. The cement resistor of claim 2, wherein the resistor (1) is enclosed by a ceramic shell (4), the ceramic shell (4) is made of steatite ceramic, and the ceramic shell (4) is sealed at the upper end and the lower end.

5. The arrayed non-inductive cement resistor for the automobile audio according to claim 3, wherein the resistor body (1) is inserted into the ceramic shell (4) in an inverted manner, three to five through holes (5) are formed in the lower sealed end of the ceramic shell (4), the through holes (5) are of a structure with a large top and a small bottom, the hole distance between every two adjacent through holes (5) is fixed, the PIN (3) of each resistor body (1) penetrates through the through hole (5) at the corresponding position on the ceramic shell (4) and is exposed out of the through hole (5) of the ceramic shell (4), and the contact surface between the PIN (3) and the through hole (5) is filled with the packaging slurry (6).