CN218996448U

CN218996448U - Chip resistor with high protective performance

Info

Publication number: CN218996448U
Application number: CN202223105288.8U
Authority: CN
Inventors: 李爱明
Original assignee: Xiamen Gaoming Electronics Co ltd
Current assignee: Xiamen Gaoming Electronics Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-05-09
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a chip resistor with high protection performance, which relates to the technical field of chip resistors and comprises a ceramic matrix, wherein a resistor body is arranged at the middle position of the top end of the ceramic matrix, inner electrodes are arranged on the outer sides of two ends of the ceramic matrix, auxiliary electrodes are arranged on the outer walls of the inner electrodes, outer electrodes are arranged on the outer sides of the auxiliary electrodes, a protective cover is arranged at the top end of the ceramic matrix, the center of the protective cover and the center of the resistor body are positioned on the same vertical line, and connecting sheets are arranged on one sides of the inner electrodes. According to the utility model, the bottom end of the protective cover is contacted with the bottom end of the ceramic matrix, and the inner wall of the protective cover is kept at a certain distance from the outer wall of the resistor body, so that the protective cover can bear a certain impact force, and meanwhile, the force can be prevented from being transmitted to the resistor body, and the resistor body is well mechanically protected.

Description

Chip resistor with high protective performance

Technical Field

The utility model relates to the technical field of chip resistors, in particular to a chip resistor with high protection performance.

Background

The chip resistor, also called a chip fixed resistor, is one of metal glass glaze resistors, and is a resistor manufactured by mixing metal powder and glass glaze powder and printing the mixture on a substrate by adopting a screen printing method, and the chip resistor is generally small in volume, can greatly save the space cost of a circuit and is more exquisite in design.

In the prior art, the outside of chip resistor can be provided with two-layer protective layer for protect chip resistor's resistance body, but its interior protective layer contacts with the resistance body, in transportation, screening detection etc. in-process, in case the protective layer of resistance body receives the striking, the protective layer can give the resistance body with the power transmission, leads to the resistance body to take place deformation to open circuit easily to cause the device to break down, and mechanical protection effect is relatively poor, and in view of this, to above-mentioned problem, intensive research has in progress the case and produces.

Disclosure of Invention

The utility model aims to provide a chip resistor with high protection performance, so as to solve the problem that a resistor body of the chip resistor proposed in the background art is easy to damage.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a chip resistor with high barrier property, includes ceramic matrix, the resistor is installed to ceramic matrix's top intermediate position department, and the outside at ceramic matrix both ends all is provided with the internal electrode, the outer wall of internal electrode all is provided with the auxiliary electrode, and the outside of auxiliary electrode is provided with the outer electrode, the safety cover is installed on ceramic matrix's top, and the center of safety cover and the center department of resistor are on same vertical line, the connection piece is all installed to one side of internal electrode, and the one end of connection piece all runs through to the inside of safety cover and be connected with one side of resistor, the outside of safety cover and outer electrode is provided with the protection shield.

Preferably, the first through hole has all been seted up to four corners on protection shield top, and the second through hole has all been seted up to the inside bottom of first through hole, the bottom of second through hole all extends to the below of protection shield, the dead lever is all installed to four corners on safety cover top, and the top of dead lever all runs through in the inside of second through hole, the top of dead lever all extends to the inside of dead lever, and the inside second through hole outer wall of dead lever all is fixed with the elastic sheet.

Preferably, the elastic sheet is arc-shaped, and the elastic sheet is distributed at equal angles on the outer wall of the fixing rod.

Preferably, a plurality of through grooves are formed in the top end of the protective cover, and the bottom ends of the through grooves extend to the top end inside the protective cover.

Preferably, two reinforcing ribs are fixed in the through grooves, and the shape of each reinforcing rib is X-shaped.

Preferably, grooves are formed in two sides of the inner wall of the protection plate, sealing rubber strips are adhered to the inner wall of the grooves, fixing strips are fixed to the top end and the front end and the rear end of the outer electrode, and one ends of the fixing strips extend to the inside of the grooves.

Preferably, the front end and the rear end of the inside of the protection plate are adhered with water-blocking rubber gaskets, one end of each water-blocking rubber gasket and one end of the ceramic matrix are positioned on the same vertical line, and two sides of each water-blocking rubber gasket and one side of the external electrode are positioned in the same vertical plane.

Compared with the prior art, the utility model has the beneficial effects that:

the bottom of the protective cover is contacted with the bottom of the ceramic matrix, and the inner wall of the protective cover is kept at a certain distance from the outer wall of the resistor, so that the protective cover can bear a certain impact force and simultaneously can avoid transmitting the force to the resistor, and the resistor is mechanically protected well.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic view of a partial top view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2B according to the present utility model;

fig. 5 is a schematic view of a three-dimensional appearance structure of the present utility model.

In the figure: 1. an external electrode; 2. a sub-electrode; 3. an inner electrode; 4. a protective plate; 5. a protective cover; 6. a resistor; 7. a connecting sheet; 8. a ceramic matrix; 9. a fixing strip; 10. a through groove; 11. reinforcing ribs; 12. a first through hole; 13. a fixed rod; 14. an elastic sheet; 15. a second through hole; 16. a groove; 17. a sealing rubber strip; 18. the water-blocking rubber cushion.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to fig. 1-5, a chip resistor with high protection performance comprises a ceramic matrix 8, wherein a resistor body 6 is arranged at the middle position of the top end of the ceramic matrix 8, inner electrodes 3 are arranged on the outer sides of two ends of the ceramic matrix 8, auxiliary electrodes 2 are arranged on the outer walls of the inner electrodes 3, an outer electrode 1 is arranged on the outer side of the auxiliary electrodes 2, and a protection cover 5 is arranged on the top end of the ceramic matrix 8;

a plurality of through grooves 10 are formed in the top end of the protective cover 5, and the bottom ends of the through grooves 10 extend to the top end inside the protective cover 5;

two reinforcing ribs 11 are fixed in the through grooves 10, and the shape of each reinforcing rib 11 is X-shaped;

specifically, as shown in fig. 2, the total weight of the protective cover 5 is reduced by providing the through groove 10, and the protective cover 5 is maintained in strength by providing the reinforcing rib 11 to complete the protective work.

The center of the protective cover 5 and the center of the resistor body 6 are positioned on the same vertical line, one side of the inner electrode 3 is provided with a connecting sheet 7, and one end of the connecting sheet 7 penetrates through the protective cover 5 to be connected with one side of the resistor body 6;

specifically, as shown in fig. 1, the bottom end of the protective cover 5 contacts with the bottom end of the ceramic matrix 8, and the inner wall of the protective cover 5 keeps a certain distance from the outer wall of the resistor 6, so that the protective cover 5 can bear a certain impact force and simultaneously can avoid transmitting the force to the resistor 6 to perform better mechanical protection on the resistor 6.

The outer sides of the protective cover 5 and the outer electrode 1 are provided with a protective plate 4;

grooves 16 are formed in two sides of the inner wall of the protection plate 4, sealing rubber strips 17 are adhered to the inner wall of the grooves 16, fixing strips 9 are fixed to the top ends, front ends and rear ends of the two external electrodes 1, and one ends of the fixing strips 9 extend into the grooves 16;

the front end and the rear end of the inside of the protection board 4 are adhered with water-blocking rubber gaskets 18, one end of the water-blocking rubber gaskets 18 and one end of the ceramic matrix 8 are positioned on the same vertical line, and two sides of the water-blocking rubber gaskets 18 and one side of the external electrode 1 are positioned in the same vertical plane;

specifically, as shown in fig. 1 and 2, the fixing strip 9 extrudes the sealing adhesive tape 17, the ceramic matrix 8 and the external electrode 1 to extrude the water-blocking rubber cushion 18, so that the sealing adhesive tape 17 and the water-blocking rubber cushion 18 can block corresponding gaps, and external moisture and humidity are prevented from entering from the gaps, and the connecting sheet 7 and the resistor 6 are protected.

The four corners at the top end of the protection plate 4 are respectively provided with a first through hole 12, the bottom end of the inside of the first through hole 12 is respectively provided with a second through hole 15, the bottom end of the second through hole 15 is respectively extended to the lower part of the protection plate 4, the four corners at the top end of the protection cover 5 are respectively provided with a fixing rod 13, the top end of the fixing rod 13 is respectively penetrated into the inside of the second through hole 15, the top end of the fixing rod 13 is respectively extended into the inside of the fixing rod 13, and the outer wall of the second through hole 15 in the inside of the fixing rod 13 is respectively fixed with an elastic sheet 14;

the elastic sheet 14 is arc-shaped, and the elastic sheet 14 is equiangular distributed on the outer wall of the fixed rod 13;

specifically, as shown in fig. 1 and 3, when the protection board 4 is installed, the fixing rod 13 can be directly inserted into the first through hole 12 through the second through hole 15, the elastic piece 14 is extruded by means of the second through hole 15, and the elastic piece 14 returns back after entering the first through hole 12, so that the protection board 4 is limited to return, the connection between the protection board 4 and the protection cover 5 can be quickly completed, and the connection can be conveniently detached when needed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a chip resistor with high protective properties, includes ceramic matrix (8), resistor (6) are installed to the top intermediate position department of ceramic matrix (8), and the outside at ceramic matrix (8) both ends all is provided with internal electrode (3), the outer wall of internal electrode (3) all is provided with auxiliary electrode (2), and the outside of auxiliary electrode (2) is provided with outer electrode (1), its characterized in that: the protection cover (5) is installed on the top of ceramic base member (8), and the center of protection cover (5) is in same vertical line with the center of resistance body (6), connection piece (7) are all installed to one side of inner electrode (3), and the one end of connection piece (7) all runs through to the inside of protection cover (5) and is connected with one side of resistance body (6), the outside of protection cover (5) and outer electrode (1) is provided with protection shield (4).

2. The chip resistor with high protection performance according to claim 1, wherein: the utility model discloses a protection shield, including protection shield (4), protection shield, dead lever (5), dead lever (13), first through-hole (12) have all been seted up at four corners on protection shield (4) top, and second through-hole (15) have all been seted up to the inside bottom of first through-hole (12), the bottom of second through-hole (15) all extends to the below of protection shield (4), dead lever (13) are all installed at four corners on protection shield (5) top, and the top of dead lever (13) all runs through in the inside of second through-hole (15).

3. The chip resistor with high protection performance according to claim 2, wherein: the top ends of the fixing rods (13) extend to the inside of the fixing rods (13), and elastic pieces (14) are fixed on the outer walls of the second through holes (15) in the fixing rods (13).

4. A chip resistor with high protection performance according to claim 3, wherein: the elastic piece (14) is arc-shaped, and the elastic piece (14) is distributed at equal angles on the outer wall of the fixed rod (13).

5. The chip resistor with high protection performance according to claim 1, wherein: a plurality of through grooves (10) are formed in the top end of the protective cover (5), and the bottom ends of the through grooves (10) extend to the top end inside the protective cover (5).

6. The chip resistor with high protection performance according to claim 5, wherein: two reinforcing ribs (11) are fixed in the through grooves (10), and the reinforcing ribs (11) are X-shaped.

7. The chip resistor with high protection performance according to claim 1, wherein: both sides of protection shield (4) inner wall have all been seted up recess (16), and the inner wall of recess (16) all bonds and have joint strip (17), two the top and the front and back both ends of outer electrode (1) are fixed with fixed strip (9), and the inside that one end of fixed strip (9) all extends to recess (16).

8. The chip resistor with high protection performance according to claim 1, wherein: the waterproof structure is characterized in that waterproof rubber gaskets (18) are adhered to the front end and the rear end of the inside of the protection plate (4), one end of each waterproof rubber gasket (18) and one end of each ceramic matrix (8) are located on the same vertical line, and two sides of each waterproof rubber gasket (18) and one side of the external electrode (1) are located in the same vertical plane.