Metal film resistor with high temperature resistance and low temperature coefficient
By designing a combination of impact-resistant layer and high-temperature-resistant layer and heat-dissipation layer in metal film resistors, the problem of lack of protection and heat dissipation in the prior art is solved, reducing replacement costs and improving the protection and heat dissipation effect of the resistor.
Patent Information
- Application Number
- CN202420444531.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The existing metal film resistors lack protective structures, which leads to deformation caused by external collision or extrusion during installation, increasing replacement costs, and poor heat dissipation effect, because the external heat dissipation plate is far away from the resistor body, so it is impossible to first place. Time to perform heat dissipation.
A metal film resistor including a shell, a high-temperature resistant layer and a heat-dissipation layer is designed. The shell is equipped with an impact-resistant layer and a shock-absorbing spring. The combination of the high-temperature resistant layer and a heat-dissipation layer can be used to make a collision or squeeze. Provides first-time protection and heat dissipation.
The combination of the impact-resistant layer and the shock-absorbing spring reduces the replacement cost, and the protection and heat-dissipation effect of the resistor are significantly improved by the arrangement of the high-temperature resistant layer and the heat-dissipation layer.
Smart Images
Figure CN222145914U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal film resistors, in particular to a metal film resistor with high temperature resistance and low temperature coefficient. Background Art
[0002] With the rapid development of the electronics industry, electronic equipment has higher and higher requirements for high-precision, high-stability and high-reliability electronic components, and the demand has also increased accordingly, especially for resistors and capacitors. However, due to the small size of metal film resistors, they do not have a protective function to prevent deformation caused by external collision or extrusion during installation. The device sets an impact-resistant layer inside the protective shell. When the resistor body is impacted by the outside, it needs to be protected on the outside as soon as possible, so that the protection effect is better. In addition, since the metal film resistor is not provided with a high-temperature resistant layer, it simply dissipates heat through an external heat sink. The external heat sink is at a certain distance from the resistor body. When the resistor body dissipates high temperature, the heat sink cannot dissipate heat in the first time due to the distance. The metal film resistor in the prior art does not have the functions of good protection and good heat dissipation.
[0003] It is known that a high temperature resistant and low temperature coefficient metal film resistor (publication number CN217640826U) is disclosed. This high temperature resistant and low temperature coefficient metal film resistor can protect the pins by setting a protective component to prevent the pins from being damaged during the bending process due to the pins being too hard or the installer using too much force, thereby causing the metal film resistor to lose its function, thereby increasing the service life of the metal film resistor. However, although the above technical solution can play a good role in increasing the service life of the metal film resistor, at present, due to the small size of the metal film resistor, it does not have a protective function to prevent it from being hit or squeezed by the outside world during the installation process. Deformation, the device sets an impact-resistant layer inside the protective shell. When the resistor body is impacted by the outside, it needs to be protected on the outside in the first time, so that the protection effect is better. The device is not equipped with relevant protection structure, which leads to increased replacement cost. In addition, since the metal film resistor is not equipped with a high-temperature resistant layer, it simply dissipates heat through the heat sink arranged outside. The external heat sink is at a certain distance from the resistor body. When the resistor body dissipates high temperature, the heat sink cannot dissipate heat in the first time due to the distance. The device does not have a relevant heat dissipation layer arranged nearby on the outside of the resistor body, which leads to poor heat dissipation effect. For this reason, we provide a high-temperature resistant and low-temperature coefficient metal film resistor. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a high-temperature resistant and low-temperature coefficient metal film resistor, which solves the problems of increased replacement costs due to the lack of a relevant protective structure in the device and poor heat dissipation effect due to the lack of a relevant heat dissipation layer nearby the outside of the resistor body of the device.
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-temperature resistant and low-temperature-coefficient metal film resistor, a shell, a resistor body is arranged inside one end of the shell, a high-temperature resistant layer is arranged outside one end of the resistor body, a heat dissipation layer is arranged outside one end of the high-temperature resistant layer, a mounting plate is arranged on one side of the top of the shell, a damper is arranged in the middle of the top of the mounting plate, a shock-absorbing spring is arranged in the middle of the top of the damper, a pressure plate is arranged in the middle of the top of the shock-absorbing spring, a fixed block is arranged in the middle of the lower end of the pressure plate, a movable rod is arranged in the middle of one end of the fixed block, a slider is movably connected to the bottom of the movable rod, a slide rod is connected through one end of the slide, and a mounting plate is arranged in the middle of one end of the slide.
[0006] Preferably, a support plate is provided in the middle of one end of the shell.
[0007] Preferably, a pin is connected through one end of the support plate.
[0008] Preferably, a circular ring is disposed outside one end of the pin, a fixing plate is disposed outside one end of the circular ring, a supporting plate is disposed in the middle of one end of the circular ring, and a fixing plate is disposed in the middle of one end of the supporting plate.
[0009] Preferably, a groove is provided on the other side of the top end of the shell, and a limiting rod is provided inside one end of the groove.
[0010] Preferably, one end of the limiting rod extends through the interior of the supporting plate, and the limiting rod and the supporting plate are in a 90-degree vertical state as a whole.
[0011] The working principle and beneficial effects of the utility model are:
[0012] 1. The utility model moves downward when the pressure plate is impacted or squeezed from the outside, and the pressure plate squeezes the shock-absorbing spring and the fixed block while moving downward. A damper is arranged at the bottom of the shock-absorbing spring. When the shock-absorbing spring is impacted or squeezed by the pressure plate, it starts to shrink. The shock-absorbing spring plays a first buffering effect in the process of shrinking. The fixed block moves downward when it is impacted or squeezed by the pressure plate. The fixed block starts to squeeze the movable rod to extend to both ends in the process of moving downward. The movable rod slides outward along one end of the slide rod in the process of extending to both ends, thereby playing a second buffering effect, thereby reducing the replacement cost.
[0013] 2. The utility model is provided with a high temperature resistant layer on the outside of one end of the resistor body, and a heat dissipation layer on the outside of one end of the high temperature resistant layer. Through the arrangement of the high temperature resistant layer and the heat dissipation layer, the high temperature generated by the resistor body can be transmitted to the inside of the heat dissipation layer through the high temperature resistant layer in the first time, and then the heat is dissipated through the heat dissipation layer, thereby achieving a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0015] Figure 1 This is a structural schematic diagram of the slider in the utility model;
[0016] Figure 2 This is a schematic diagram of the "explosion" structure of the slide bar in the utility model;
[0017] Figure 3 It is a cross-sectional structural schematic diagram of the fixing block in the utility model;
[0018] Figure 4 This is a front view structural diagram of the housing in the utility model;
[0019] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.
[0020] In the figure: 1. mounting plate; 2. damper; 3. slider; 4. slide bar; 5. pressure plate; 6. movable rod; 7. shock-absorbing spring; 8. resistor body; 9. groove; 10. limit rod; 11. heat dissipation layer; 12. high temperature resistant layer; 13. fixing plate; 14. support plate; 15. ring; 16. pin; 17. fixing block; 18. casing. DETAILED DESCRIPTION
[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1 , Figure 2 and Figure 4 The utility model provides a technical solution: a metal film resistor with high temperature resistance and low temperature coefficient, comprising a shell 18, a resistor body 8 is arranged inside one end of the shell 18, a high temperature resistant layer 12 is arranged outside one end of the resistor body 8, a heat dissipation layer 11 is arranged outside one end of the high temperature resistant layer 12, a mounting plate 1 is arranged on one side of the top of the shell 18, a damper 2 is arranged in the middle of the top of the mounting plate 1, a shock absorbing spring 7 is arranged in the middle of the top of the damper 2, a pressure plate 5 is arranged in the middle of the top of the shock absorbing spring 7, a fixed block 17 is arranged in the middle of the lower end of the pressure plate 5, a movable rod 6 is arranged in the middle of one end of the fixed block 17, a slider 3 is movably connected to the bottom of the movable rod 6, a slider 4 is connected to the inside of one end of the slider 3, and a mounting plate 1 is arranged in the middle of one end of the slider 4, so that the slider 3 slides outward along one end of the slider 4 in the process of extending to both ends by the movable rod 6, thereby playing a secondary buffering effect, thereby playing an effect of reducing replacement costs.
[0023] See also Figure 1 , Figure 3 and Figure 5 A support plate 14 is provided in the middle of one end of the shell 18, a pin 16 is connected to the inside of one end of the support plate 14, a ring 15 is provided on the outside of one end of the pin 16, a fixing plate 13 is provided on the outside of one end of the ring 15, and a support plate 14 is provided in the middle of one end of the ring 15, and a fixing plate 13 is provided in the middle of one end of the support plate 14. A groove 9 is provided on the other side of the top of the shell 18, a limiting rod 10 is provided inside one end of the groove 9, one end of the limiting rod 10 is externally penetrated into the inside of the support plate 14, and the limiting rod 10 and the support plate 14 are in a vertical state of ninety degrees as a whole, and a good limiting effect is achieved through the setting of the limiting rod 10.
[0024] When in use, first, the pin 16 is passed through the interior of the support plate 14, so that the limiting rod 10 passes through the limiting hole inside the support plate 14, and then the support plate 14 is connected to the shell 18, and then the ring 15 and the fixing plate 13 are passed through the interior of the pin 16, and then the pin 16 is fixed. When the pressure plate 5 is impacted or squeezed from the outside, it moves downward. The pressure plate 5 squeezes the shock-absorbing spring 7 and the fixing block 17 while moving downward. The damper 2 is provided at the bottom of the shock-absorbing spring 7. When the shock-absorbing spring 7 is impacted or squeezed by the pressure plate 5 and starts to contract, the shock-absorbing spring 7 plays a first buffering effect during the contraction process, and the fixing block 17 is impacted or squeezed by the pressure plate 5 and moves downward. In the process of moving downward, the fixed block 17 begins to squeeze the movable rod 6 to extend it to both ends. In the process of extending to both ends, the movable rod 6 causes the slider 3 to slide outward along one end of the slide rod 4, thereby achieving a second buffering effect, thereby reducing the replacement cost. A high-temperature resistant layer 12 is arranged on the outside of one end of the resistor body 8, and a heat dissipation layer 11 is arranged on the outside of one end of the high-temperature resistant layer 12. Through the arrangement of the high-temperature resistant layer 12 and the heat dissipation layer 11, the high temperature generated by the resistor body 8 can be transmitted to the inside of the heat dissipation layer 11 through the high-temperature resistant layer 12 in the first time, and then the heat is dissipated through the heat dissipation layer 11, thereby achieving a better heat dissipation effect, thereby completing the work of a high-temperature resistant and low-temperature coefficient metal film resistor.
[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high temperature resistant and low temperature coefficient metal film resistor, comprising a housing (18), characterized in that: A resistor body (8) is arranged inside one end of the shell (18), a high temperature resistant layer (12) is arranged outside one end of the resistor body (8), a heat dissipation layer (11) is arranged outside one end of the high temperature resistant layer (12), a mounting plate (1) is arranged on one side of the top end of the shell (18), a damper (2) is arranged in the middle of the top end of the mounting plate (1), a shock absorbing spring (7) is arranged in the middle of the top end of the damper (2), a pressure plate (5) is arranged in the middle of the top end of the shock absorbing spring (7), a fixed block (17) is arranged in the middle of the lower end of the pressure plate (5), a movable rod (6) is arranged in the middle of one end of the fixed block (17), a slider (3) is movably connected to the bottom of the movable rod (6), a slider (4) is connected to one end of the slider (3), and a mounting plate (1) is arranged in the middle of one end of the slider (4).
2. The high temperature resistant and low temperature coefficient metal film resistor according to claim 1, characterized in that: A support plate (14) is provided at the middle of one end of the housing (18).
3. A high temperature resistant and low temperature coefficient metal film resistor according to claim 2, characterized in that: A pin (16) is connected and penetrated inside one end of the support plate (14).
4. The high temperature resistant and low temperature coefficient metal film resistor according to claim 3, characterized in that: A circular ring (15) is disposed outside one end of the pin (16), a fixing plate (13) is disposed outside one end of the circular ring (15), a supporting plate (14) is disposed in the middle of one end of the circular ring (15), and a fixing plate (13) is disposed in the middle of one end of the supporting plate (14).
5. The high temperature resistant and low temperature coefficient metal film resistor according to claim 2, characterized in that: A groove (9) is provided on the other side of the top end of the housing (18), and a limiting rod (10) is provided inside one end of the groove (9).
6. The high temperature resistant and low temperature coefficient metal film resistor according to claim 5, characterized in that: The outside of one end of the limiting rod (10) passes through the inside of the supporting plate (14), and the limiting rod (10) and the supporting plate (14) are in a vertical state of 90 degrees as a whole.