High-stability chip resistor

Abstract

The high-stability chip resistor comprises a support, a chip resistor body, a tin block, a pressing plate, a fixing sleeve, an isolation ring and fins, the chip resistor body is placed at the top end of the support, and through the tin block, the pressing plate, the support and the isolation ring which are arranged, when a device is installed and fixed, a welding gun is used for heating the pressing plate; at the moment, when heat is transferred to the tin block, the tin block melts and then flows into the groove in the bottom of the support, then the molten tin liquid connects the support, the pressing plate, the electrode and the chip resistor together, the tin block is further melted by heating the pressing plate, and the chip resistor is heated. Then quantitative tin liquid flows to the groove at the bottom of the bracket under the isolation of the isolation ring to connect the electrode with the connecting end of the chip resistor, so that the mounting and fixing difficulty of the chip resistor is reduced, and meanwhile, the phenomenon of short circuit caused by more tin liquid and the phenomenon of open circuit caused by less tin liquid are avoided; therefore, the stability of the chip resistor in use is better.

Description

Technical Field

[0001] The utility model relates to the technical field of chip resistors, in particular to a high-stability chip resistor. Background Art

[0002] Chip resistors, also known as name card fixed resistors, are a type of metal glass glaze resistors. Chip resistors are made by mixing metal powder and glass glaze powder and printing them on a substrate using screen printing. They are resistant to moisture and high temperature, have a small temperature coefficient, and can greatly save circuit space costs, making the design more refined. When installing existing chip resistors, the operator usually holds a welding gun and a tin bar at the soldering point to melt a part of the tin bar on a soldering point, then holds the chip resistor with tweezers in one hand and sticks one end of it to the soldering point, and holds the welding gun in the other hand to melt the solder at the soldering point, so as to first melt one end of the chip resistor. The two ends of the chip resistor are connected, and then the welding gun and tin bar are used to weld the other end of the chip resistor. Since the operation is cumbersome when fixing the chip resistor, and the amount of solder liquid used is often not accurately controlled, and because the chip resistor is small in size, the operation is difficult in the process of welding the two ends of the chip resistor. When the two sides are connected together with more solder liquid, a short circuit will occur. When the two sides are less solder liquid, the welding between the electrode and the soldering point will be unreliable, and then the circuit breakage will easily occur, thereby affecting the stability of the chip resistor when used. Therefore, a high-stability chip resistor is proposed to address the above problems. Utility Model Content

[0003] The technical problem to be solved by the utility model overcomes the existing defects and can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A high-stability chip resistor comprises a bracket, a chip resistor, a tin block, a pressure plate, a fixing sleeve, an isolation ring and a fin, wherein the chip resistor is placed on the top of the bracket, tin blocks with through holes on the inside are placed on both left and right ends of the inner side of the bracket, the top of the tin block contacts the pressure plate, and the pressure plate is slidably connected to the bracket, the top of the pressure plate contacts the fixing sleeve, and the fixing sleeve contacts the chip resistor.

[0006] As a further improvement of the present invention, grooves are provided on both left and right sides of the bottom end of the bracket, and the grooves at the bottom end of the bracket are symmetrically provided at the bottom of the bracket.

[0007] As a further improvement of the present invention, an isolation ring is provided at the edge of the groove at the bottom of the bracket, and the isolation ring is made of high-temperature resistant rubber material, and the isolation ring is slidably connected to the bracket.

[0008] As a further improvement of the present invention, a fin is provided at the center of the inner side of the bracket, and the fin is fixedly connected to the bracket.

[0009] As a further improvement of the utility model, both left and right sides of the top outer side of the bracket are provided with external threads, the inner side of the fixing sleeve is provided with internal threads, and the fixing sleeve is spirally connected to the bracket.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. A high-stability chip resistor, through the provision of a tin block, a pressure plate, a bracket and an isolation ring, when the device is installed and fixed, a welding gun is used to heat the pressure plate, at this time when the heat is transferred to the tin block, the tin block will melt, and then flow to the bottom groove of the bracket, and then the melted tin liquid will connect the bracket, the pressure plate, the electrode and the chip resistor together, and by heating the pressure plate, the tin block is further melted, and then a certain amount of tin liquid is made to flow to the groove at the bottom of the bracket under the isolation of the isolation ring to connect the electrode with the connection end of the chip resistor, thereby reducing the difficulty of installing and fixing the chip resistor, and avoiding the short circuit phenomenon caused by too much tin liquid and the open circuit phenomenon caused by too little tin liquid, thereby making the chip resistor more stable when used.

[0012] 2. A high-stability chip resistor, through the set fixing sleeve and bracket, when the chip resistor is fixed and installed, first put the tin block and the pressure plate at both ends of the inner side of the bracket, then put the chip resistor on the top of the bracket, and then rotate the fixing sleeve to connect with the bracket spirally, which is convenient for fixing the tin block and the pressure plate in the bracket, and at the same time, it is convenient to stably connect the chip resistor to the top of the bracket, thereby facilitating the subsequent fixed installation of the chip resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a high-stability chip resistor.

[0015] Figure 2 This is a schematic diagram of the main structure of a high-stability chip resistor of the utility model.

[0016] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a high-stability chip resistor.

[0017] In the figure: 1. bracket; 2. chip resistor; 3. tin block; 4. pressure plate; 5. fixing sleeve; 6. isolation ring; 7. fin. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent. In order to better illustrate the specific implementation methods of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific implementation methods in the utility model, all other specific implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] like Figure 1-3 As shown, a high-stability chip resistor comprises a bracket 1, a chip resistor 2, a tin block 3, a pressure plate 4, a fixing sleeve 5, an isolation ring 6 and a fin 7, wherein the chip resistor 2 is placed on the top of the bracket 1, and tin blocks 3 with through holes on the inside are placed on both the left and right ends of the inner side of the bracket 1, the top of the tin block 3 contacts with the pressure plate 4, and the pressure plate 4 is slidably connected to the bracket 1, and the top of the pressure plate 4 contacts with the fixing sleeve 5, and the fixing sleeve 5 contacts with the chip resistor 2.

[0021] Example 2

[0022] like Figure 3 As shown, in order to solve the problem that it is inconvenient for the melted tin block 3 to connect the electrode and the connection end of the chip resistor 2 together, grooves are provided on both sides of the bottom end of the bracket 1, and the grooves at the bottom end of the bracket 1 are symmetrically provided at the bottom of the bracket 1. By providing grooves on the left and right sides of the bottom of the bracket 1 respectively, after the chip resistor 2 is connected to the top end of the bracket 1, it is convenient for the melted tin block 3 to connect the electrode and the connection end of the chip resistor 2 together.

[0023] Example 3

[0024] like Figure 2-3 As shown, in order to solve the problem that the tin liquid easily flows from the groove at the bottom of the bracket 1 to the bottom of the bracket 1 in large quantities, an isolation ring 6 is provided at the edge of the groove at the bottom of the bracket 1, and the isolation ring 6 is made of high-temperature resistant rubber material. The isolation ring 6 is slidably connected to the bracket 1. By providing the isolation ring 6 made of high-temperature resistant rubber material at the edge of the groove at the bottom of the bracket 1, the phenomenon that the tin liquid flows from the groove at the bottom of the bracket 1 to the bottom of the bracket 1 in large quantities is avoided.

[0025] Example 4

[0026] like Figure 2-3As shown, in order to solve the problem of poor heat dissipation effect of the SMD resistor 2 when in use, a fin 7 is provided at the inner center of the bracket 1, and the fin 7 is fixedly connected to the bracket 1. By arranging the heat dissipation fin 7 at the bottom of the SMD resistor 2, the heat dissipation effect of the SMD resistor 2 when in use is better.

[0027] Example 5

[0028] like Figure 1-3 As shown, in order to solve the problem that it is inconvenient to limit the chip resistor 2 at the top of the bracket 1 and it is inconvenient to limit the tin block 3 and the pressure plate 4 in the bracket 1, the left and right sides of the outer top of the bracket 1 are provided with external threads, and the inner side of the fixing sleeve 5 is provided with an internal thread. The fixing sleeve 5 is spirally connected with the bracket 1. After placing the tin block 3 and the pressure plate 4 in the bracket 1 and placing the chip resistor 2 on the top of the bracket 1, the fixing sleeve 5 is spirally connected with the bracket 1 by rotating it, which makes it convenient to limit the chip resistor 2 at the top of the bracket 1 and to limit the tin block 3 and the pressure plate 4 in the bracket 1.

[0029] In this embodiment, when the chip resistor 2 is fixed and installed, the tin block 3 and the pressure plate 4 are first placed at both ends of the inner side of the bracket 1, and then the chip resistor 2 is placed on the top of the bracket 1, and then the fixing sleeve 5 is rotated to be spirally connected with the bracket 1. At this time, the tin block 3 and the pressure plate 4 are fixed in the bracket 1, and it is convenient to stably connect the chip resistor 2 to the top of the bracket 1. After completing the above operations, when the device is installed and fixed, the pressure plate 4 is heated by a welding gun. At this time, when the heat is transferred to the tin block 3, the tin block 3 will melt and then flow into the groove at the bottom of the bracket 1. Then the melted tin liquid will connect the bracket 1, the pressure plate 4, the electrode and the chip resistor 2 together. By allowing a certain amount of tin liquid to flow to the groove at the bottom of the bracket 1 under the isolation of the isolation ring 6 made of high-temperature resistant rubber material, the electrode is connected to the connection end of the chip resistor 2, thereby reducing the difficulty of installing and fixing the chip resistor 2, and avoiding the short circuit phenomenon caused by more tin liquid and the open circuit phenomenon caused by less tin liquid, thereby making the chip resistor 2 more stable when used.

[0030] The above is a preferred implementation mode of the utility model. The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Technical personnel in this industry should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-stability chip resistor, comprising a bracket (1), a chip resistor (2), a tin block (3), a pressing plate (4), a fixing sleeve (5), an isolation ring (6) and a fin (7), characterized in that: A chip resistor (2) is placed at the top of the bracket (1), and tin blocks (3) with through holes on the inside are placed at both left and right ends of the inside of the bracket (1). The top of the tin block (3) contacts a pressure plate (4), and the pressure plate (4) is slidably connected to the bracket (1). The top of the pressure plate (4) contacts a fixing sleeve (5), and the fixing sleeve (5) contacts the chip resistor (2).

2. A high stability chip resistor according to claim 1, characterized in that: The left and right sides of the bottom end of the bracket (1) are both provided with grooves, and the grooves at the bottom end of the bracket (1) are symmetrically arranged at the bottom of the bracket (1).

3. A high stability chip resistor according to claim 2, characterized in that: An isolation ring (6) is provided at the edge of the groove at the bottom of the bracket (1), and the isolation ring (6) is made of high-temperature resistant rubber material. The isolation ring (6) is slidably connected to the bracket (1).

4. The high stability chip resistor according to claim 1, characterized in that: A fin (7) is provided at the center of the inner side of the bracket (1), and the fin (7) is fixedly connected to the bracket (1).

5. The high stability chip resistor according to claim 1, characterized in that: The left and right sides of the top of the outer side of the bracket (1) are both provided with external threads, and the inner side of the fixing sleeve (5) is provided with internal threads, and the fixing sleeve (5) is spirally connected to the bracket (1).

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