Thick-film non-inductive resistor

Abstract

The invention relates to the technical field of resistors, in particular to a thick-film non-inductive resistor which comprises an aluminum oxide ceramic substrate, two thick-film resistor bodies are electrically mounted on the upper surface of the aluminum oxide ceramic substrate, and two resistor terminal electrodes are electrically mounted between the two thick-film resistor bodies. Four mounting holes are uniformly formed in the surface of the aluminum oxide ceramic substrate, four limiting blocks are uniformly arranged on the side wall of the aluminum oxide ceramic substrate in a sleeving manner, every two limiting blocks form a group, supporting rods are fixedly mounted on the side walls of the two limiting blocks, and a plurality of threaded holes are uniformly formed in the surface of each supporting rod; sleeves are arranged on the two sides of the aluminum oxide ceramic substrate, threaded rods are arranged at the two ends of the sleeves in a threaded and penetrating mode, the size of the threaded rods is matched with the size of the threaded holes, and check blocks are fixedly installed on the side walls of the threaded rods. According to the invention, the problem of low use intensity of the resistor in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of resistor technology, and in particular to a thick film non-inductive resistor. Background Art

[0002] Resistors are generally called resistors in daily life. They are current limiting components. When a resistor is connected to a circuit, it can limit the current passing through the branch it is connected to. Resistors with unchangeable resistance values ​​are called fixed resistors, and resistors with variable resistance values ​​are called potentiometers or variable resistors. Thick film non-inductive resistors are a type of resistor.

[0003] The substrate of the resistor is usually made of aluminum oxide ceramic, which has a brittle structure. During use, when the resistor on the circuit board needs to be disassembled, violent disassembly can easily cause the side of the resistor to bend and break, reducing the strength of the resistor.

[0004] Therefore, the present invention provides a thick film non-inductive resistor. Summary of the invention

[0005] The purpose of the present invention is to solve the disadvantage of low usage intensity of resistors in the prior art and to propose a thick film non-inductive resistor.

[0006] In order to achieve the above-mentioned purpose, the patent of the present invention adopts the following technical scheme: a thick-film non-inductive resistor, comprising an aluminum oxide ceramic substrate, two thick-film resistor bodies are electrically installed on the upper surface of the aluminum oxide ceramic substrate, two resistor terminal electrodes are electrically installed between the two thick-film resistor bodies, four mounting holes are evenly opened on the surface of the aluminum oxide ceramic substrate, four limit blocks in groups of two are evenly sleeved on the side wall of the aluminum oxide ceramic substrate, support rods are fixedly installed on the side walls of the two limit blocks, and a number of threaded holes are evenly opened on the surface of the support rods, sleeves are provided on both sides of the aluminum oxide ceramic substrate, screws are threaded through both ends of the sleeve, the size of the screw is matched with the size of the threaded hole, and a stopper is fixedly installed on the side wall of the screw.

[0007] The effect achieved by the above components is: the limit blocks on the two support rods are respectively put on both sides of the alumina ceramic substrate, which can realize the preliminary support work of the side wall of the alumina ceramic substrate, take out the sleeve, rotate the screw inside the sleeve, and thread the screw to the inner wall of the corresponding threaded hole. A rectangular frame structure is formed between the screw, sleeve and support rod, which facilitates the reinforcement work of the side of the alumina ceramic substrate.

[0008] Preferably, two bolts are threadedly passed through the interior of the sleeve, and a positioning head with a truncated cone structure is fixedly mounted on the end side of the screw.

[0009] The effects achieved by the above components are: the two bolts inside the rotating sleeve are pressed against the side wall of the alumina ceramic substrate, further improving the stability of reinforcing the side of the alumina ceramic substrate, and the setting of the truncated cone-shaped structure positioning head improves the positioning efficiency between the screw and the threaded hole.

[0010] Preferably, the inner side of the limit block is a "U"-shaped notch, and an elastic pad is glued to the inner wall of the limit block.

[0011] The effect achieved by the above components is that the provision of the elastic pad improves the stability of the limit block being stuck on the side wall of the aluminum oxide ceramic substrate.

[0012] Preferably, the inner wall of the mounting hole is slidably covered with a protective ring, and the protective ring is an aluminum ring.

[0013] The effects achieved by the above components are: the protective ring of the aluminum ring structure reduces the wear of the inner wall of the mounting hole on the aluminum oxide ceramic substrate when installing the screws, and further improves the use strength of the aluminum oxide ceramic substrate.

[0014] Preferably, two rotating blocks are rotatably mounted on both ends of the protective ring, and the rotating blocks are long sheet structures.

[0015] The effect achieved by the above components is: rotate the rotating block to retract the inner ring of the protective ring, put the protective ring on the inner wall of the installation hole, and then rotate the rotating block located at the inner ring of the protective ring, so that the inner side of the installation hole can be covered.

[0016] Preferably, a rubber pad is glued to the surface of the rotating block, and the rubber pad is a truncated cone structure.

[0017] The effects achieved by the above components are: the rubber pad with a truncated cone structure facilitates the rotation out of the inner ring of the protective ring, and the rubber pad is filled between the aluminum oxide ceramic substrate and the rotating block, further improving the stability of the protective ring during use.

[0018] In summary:

[0019] 1. In the present invention, a rectangular frame structure is formed between the screw, the sleeve and the support rod, which facilitates the reinforcement of the side of the alumina ceramic substrate. By setting the above structure, the reinforcement of the side of the alumina ceramic substrate is facilitated, and the bending and fracture of the side of the resistor caused by violent disassembly is reduced, thereby improving the overall strength of the alumina ceramic substrate to a certain extent.

[0020] 2. In the patent of the present invention, the rotating block is rotated to retract the inner ring of the protective ring. After the protective ring is put on the inner wall of the mounting hole, the rotating block located at the inner ring of the protective ring is rotated out. At this time, the inner side of the mounting hole can be covered, reducing the twisting between the screw and the inner side of the mounting hole, which easily leads to greater wear on the inner side of the mounting hole. By setting the above structure, the wear of the inner wall of the mounting hole on the alumina ceramic substrate when installing the screw is reduced, and the use strength of the alumina ceramic substrate is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the plane structure of the patent of this invention;

[0022] Figure 2 It is a structural schematic diagram of the support rod in the patent of this invention;

[0023] Figure 3 It is a schematic diagram of the structure of the sleeve in the patent of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the protective ring in the patent of this invention.

[0025] Legend: 1. Aluminum oxide ceramic substrate; 2. Thick film resistor body; 3. Resistor terminal electrode; 4. Mounting hole; 5. Protective ring; 6. Sleeve; 7. Support rod; 8. Limit block; 9. Elastic pad; 10. Bolt; 11. Screw; 12. Stop block; 13. Turn block; 14. Rubber pad; 15. Positioning head; 16. Threaded hole. DETAILED DESCRIPTION

[0026] Reference Figure 1 As shown, the patent of the present invention provides a technical solution: a thick film non-inductive resistor, including an aluminum oxide ceramic substrate 1, two thick film resistor bodies 2 are electrically installed on the upper surface of the aluminum oxide ceramic substrate 1, two resistor terminal electrodes 3 are electrically installed between the two thick film resistor bodies 2, and four mounting holes 4 are evenly opened on the surface of the aluminum oxide ceramic substrate 1.

[0027] The following is a detailed description of its overall specific settings and functions.

[0028] Reference Figure 1-Figure 3As shown, in this embodiment: the side wall of the aluminum oxide ceramic substrate 1 is evenly sleeved with four limit blocks 8 in groups of two, the side walls of the two limit blocks 8 are fixedly installed with support rods 7, and the surface of the support rods 7 is evenly opened with a number of threaded holes 16, and sleeves 6 are provided on both sides of the aluminum oxide ceramic substrate 1, and screws 11 are threadedly penetrated at both ends of the sleeve 6, and the size of the screw 11 is adapted to the size of the threaded hole 16, and the side wall of the screw 11 is fixedly installed with a stopper 12. The limit blocks 8 on the two support rods 7 are respectively sleeved on both sides of the aluminum oxide ceramic substrate 1, which can achieve the preliminary support work of the side wall of the aluminum oxide ceramic substrate 1, take out the sleeve 6, rotate the screw 11 inside the sleeve 6, and thread the screw 11 to the inner wall of the corresponding threaded hole 16, and a rectangular frame structure is formed between the screw 11, the sleeve 6 and the support rod 7, which facilitates the reinforcement work of the side of the aluminum oxide ceramic substrate 1.

[0029] The inside of the sleeve 6 is threaded with two bolts 10, and a truncated cone-shaped positioning head 15 is fixedly installed on the end side of the screw rod 11. The two bolts 10 inside the sleeve 6 are rotated, and the bolts 10 are against the side wall of the alumina ceramic substrate 1, which further improves the stability of reinforcing the side of the alumina ceramic substrate 1. The setting of the truncated cone-shaped positioning head 15 improves the positioning efficiency between the screw rod 11 and the threaded hole 16. The inner side of the limit block 8 is a "U"-shaped notch, and the inner wall of the limit block 8 is glued with an elastic pad 9. The setting of the elastic pad 9 improves the stability of the limit block 8 stuck on the side wall of the alumina ceramic substrate 1.

[0030] Reference Figure 1 and Figure 4 As shown, specifically, the inner wall of the mounting hole 4 is slidably covered with a protective ring 5, and the protective ring 5 is an aluminum ring. The protective ring 5 with an aluminum ring structure reduces the wear condition of the inner wall of the mounting hole 4 on the alumina ceramic substrate 1 when installing the screw, and further improves the use strength of the alumina ceramic substrate 1. Two rotating blocks 13 are rotatably installed at both ends of the protective ring 5, and the rotating block 13 is a long sheet structure. The rotating block 13 is rotated to retract the inner ring of the protective ring 5, and after the protective ring 5 is sleeved on the inner wall of the mounting hole 4, the rotating block 13 located at the inner ring of the protective ring 5 is rotated out, and the inner side of the mounting hole 4 can be covered.

[0031] The surface of the rotating block 13 is glued with a rubber pad 14, which is a truncated cone structure. The truncated cone-shaped rubber pad 14 facilitates the work of rotating out from the inner ring of the protective ring 5. The rubber pad 14 is filled between the aluminum oxide ceramic substrate 1 and the rotating block 13, further improving the stability of the protective ring 5 during use.

[0032] Working principle: The thick film electronic paste is printed on the ceramic substrate by screen printing, and then sintered and solidified. The terminal electrodes are reserved on the ceramic substrate. The thick film resistor body 2 has a symmetrical structure that reciprocates back and forth. The electromagnetic fields completely cancel each other out, and the inductance can be close to zero. The limit blocks 8 on the two support rods 7 are respectively sleeved on both sides of the alumina ceramic substrate 1 to achieve preliminary support for the side wall of the alumina ceramic substrate 1. The sleeve 6 is taken out, and the screw 11 inside the sleeve 6 is rotated. The screw 11 is threadedly connected to the inner wall of the corresponding threaded hole 16. The setting of the truncated cone-shaped positioning head 15 improves the positioning efficiency between the screw 11 and the threaded hole 16. The screw 11 and the sleeve 6 are A rectangular frame structure is formed between the support rod 7, which facilitates the reinforcement of the side of the alumina ceramic substrate 1. The setting of the elastic pad 9 improves the stability of the limit block 8 stuck in the side wall of the alumina ceramic substrate 1. At this time, the two bolts 10 inside the rotating sleeve 6 are against the side wall of the alumina ceramic substrate 1, further improving the stability of the reinforcement of the side of the alumina ceramic substrate 1. By setting the above structure, the reinforcement of the side of the alumina ceramic substrate 1 is facilitated, and the situation that violent disassembly easily causes bending and fracture of the side position of the resistor is reduced, and the overall use strength of the alumina ceramic substrate 1 is improved to a certain extent.

[0033] By rotating the rotating block 13 to retract the inner ring of the protective ring 5, and after the protective ring 5 is put on the inner wall of the mounting hole 4, the rotating block 13 located at the inner ring of the protective ring 5 is rotated out. At this time, the inner side of the mounting hole 4 can be covered, reducing the twisting between the screw and the inner side of the mounting hole 4, which may easily cause the inner side of the mounting hole 4 to become more worn, further improving the stability of the later installation and use of the alumina ceramic substrate 1, and the truncated cone-shaped rubber pad 14 facilitates the rotation out of the inner ring of the protective ring 5. The rubber pad 14 is filled between the alumina ceramic substrate 1 and the rotating block 13, further improving the stability of the protective ring 5 during use. By setting the above structure, the wear of the inner wall of the mounting hole 4 on the alumina ceramic substrate 1 when installing the screw is reduced, and the use strength of the alumina ceramic substrate 1 is further improved.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A thick film non-inductive resistor, comprising an aluminum oxide ceramic substrate (1), characterized in that: Two thick film resistors (2) are electrically mounted on the upper surface of the aluminum oxide ceramic substrate (1), and two resistor terminal electrodes (3) are electrically mounted between the two thick film resistors (2). Four mounting holes (4) are evenly arranged on the surface of the aluminum oxide ceramic substrate (1). Four limit blocks (8) are evenly sleeved on the side wall of the aluminum oxide ceramic substrate (1) in groups of two. Support rods (7) are fixedly mounted on the side walls of the two limit blocks (8). A plurality of threaded holes (16) are evenly arranged on the surface of the support rods (7). Sleeves (6) are arranged on both sides of the aluminum oxide ceramic substrate (1), and screws (11) are threadedly penetrated at both ends of the sleeves (6). The size of the screws (11) matches the size of the threaded holes (16), and a stopper (12) is fixedly mounted on the side wall of the screw (11).

2. A thick film non-inductive resistor according to claim 1, characterized in that: Two bolts (10) are threadedly inserted into the interior of the sleeve (6), and a positioning head (15) with a truncated cone structure is fixedly mounted on the end side of the screw rod (11).

3. The thick film non-inductive resistor according to claim 1, characterized in that: The inner side of the limit block (8) is a "U"-shaped notch, and the inner wall of the limit block (8) is glued with an elastic pad (9).

4. The thick film non-inductive resistor according to claim 1, characterized in that: The inner wall of the mounting hole (4) is slidably covered with a protective ring (5), and the protective ring (5) is an aluminum ring.

5. The thick film non-inductive resistor according to claim 4, characterized in that: Two rotating blocks (13) are rotatably mounted on both ends of the protective ring (5), and the rotating blocks (13) are long sheet structures.

6. The thick film non-inductive resistor according to claim 5, characterized in that: A rubber pad (14) is glued to the surface of the rotating block (13), and the rubber pad (14) is a truncated cone structure.

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