High-precision chip capacitor

Abstract

The utility model discloses a high-precision chip capacitor, which relates to the technical field of chip capacitors and comprises a U-shaped seat, two inner sides of the U-shaped seat are provided with sliding grooves, a sliding block is slidably connected in each sliding groove, the two sliding blocks are jointly provided with a capacitor body, and the two sliding grooves are jointly slidably connected with a top plate. When the capacitor is used, the two ends of the capacitor body are provided with the sliding blocks and then can slide into the sliding grooves, the capacitor body is limited through the top plate and the limiting mechanism, vibration impact received by the capacitor body is reduced through the damping pads, and therefore the service life of the capacitor body is prolonged, and the capacitor is easy to disassemble and assemble and high in practicability. And moreover, rapid heat dissipation can be realized, and the heat management capability of the capacitor body in use is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to patch capacitor technical field especially relates to a high accuracy patch capacitor. BACKGROUND

[0002] High accuracy patch capacitor is the electronic field vital electronic component. It adopts surface mount technology, and the volume is small and exquisite, and is convenient for installing on various precision circuit boards. Its high accuracy is reflected on the stability and accuracy of the capacitance value, can control error in the very small range, and general precision can reach even higher ±0.1%. This capacitor is often used in the circuit that the signal processing requirement is very high, such as communication equipment, high-end audio equipment, precision measuring instrument etc. With accurate capacitance value, it can stabilize filtering, coupling signal in these circuits, ensure that equipment accurate operation, guarantee signal not distortion, provide strong support for the high performance and stability of electronic equipment.

[0003] Traditional high accuracy patch capacitor is directly welded on PCB, when fixing is completed, cannot be conveniently replaced, needs to return to repair and repair, and the vibration generated by external equipment is easy to be transferred to the patch capacitor after the installation of high accuracy patch capacitor, since the structure of the patch capacitor is relatively fragile, it is easy to cause microcracks in the inside to influence the electrical performance of the capacitor, in view of this, the application proposes a kind of high accuracy patch capacitor. UTILITARIAN CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art, and proposes a kind of high accuracy patch capacitor.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of high accuracy patch capacitor, including U-shaped seat, the two inner sides of the U-shaped seat are provided with sliding slot, each the sliding block of being slidably connected in the sliding slot, two the capacitor body of being installed with sliding block, two the top plate of being slidably connected with sliding slot, the shock pad of being installed on the bottom surface of the top plate, and shock pad and the top surface of capacitor body are in resistance, the top surface of the top plate is equipped with limiting mechanism, the bottom surface of the capacitor body is equipped with heat conduction mechanism, the top surface of the U-shaped seat is equipped with heat dissipation mechanism, and heat dissipation mechanism and heat conduction mechanism are flexibly contacted.

[0007] Preferably, the heat conduction mechanism includes heat conduction sheet, and the heat conduction sheet is installed on the bottom surface of the capacitor body, a plurality of copper columns are installed in the heat conduction sheet, and the plurality of copper columns are distributed in rectangular array.

[0008] Preferably, the heat dissipation mechanism includes heat dissipation sheet, and the heat dissipation sheet is installed on the top surface of the U-shaped seat, the top surface of the heat dissipation sheet is installed with heat conduction silica gel pad, and the bottom end of each copper column is in resistance with the top surface of heat conduction silica gel pad.

[0009] Preferably, the limiting mechanism includes multiple limiting boxes, each limiting box having a slidably connected limiting post, and each limiting post being locked in a U-shaped seat. A fixing plate is fixedly installed on the outer side of each limiting post, and a spring is installed between the outer side of each fixing plate and the side wall of the limiting box corresponding to the position. A connecting rod is installed on the other end of the multiple limiting posts located on the same side.

[0010] Preferably, mounting plates are fixedly installed on both outer sides of the U-shaped base, and auxiliary plates are fixedly installed on both outer sides of the U-shaped base. Each mounting plate has multiple second openings on its top surface, and each auxiliary plate has multiple first openings on its outer side.

[0011] Preferably, the U-shaped seat has multiple limiting holes on both inner sides, and each limiting post is locked in a corresponding limiting box. Two sealing plates are symmetrically installed on both inner sides of the U-shaped seat.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model uses devices such as shock-absorbing pads, sliders, slide grooves, limiting mechanisms, and top plates to enable the capacitor body to slide into the slide groove after the sliders are installed at both ends. The capacitor body is limited by the top plate and the limiting mechanism. The shock-absorbing pads reduce the vibration and impact received by the capacitor body, thereby extending the service life of the capacitor body. It is also simple to disassemble and assemble, and easy to replace.

[0014] 2. This utility model, through devices such as a heat-conducting mechanism, a heat-dissipating mechanism, and a heat-conducting silicone pad, enables the heat generated by the capacitor body during operation to be conducted to the heat-conducting silicone pad through the heat-conducting mechanism, and then dissipated through the heat-dissipating mechanism. Furthermore, the heat-conducting silicone pad allows for flexible contact between the heat-conducting mechanism and the heat-dissipating mechanism, which can compensate for assembly tolerances and reduce contact resistance, thereby achieving rapid heat dissipation and improving the thermal management capability of the capacitor body during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a high-precision chip capacitor proposed in this utility model;

[0016] Figure 2 A schematic diagram of the groove opening structure of a high-precision surface mount capacitor proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of a copper pillar mounting structure for a high-precision surface mount capacitor proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the limiting mechanism structure of a high-precision surface mount capacitor proposed in this utility model.

[0019] In the diagram: 1. U-shaped base; 2. Mounting plate; 3. Auxiliary plate; 4. First opening; 5. Capacitor body; 6. Slide groove; 7. Limiting hole; 8. Second opening; 9. Sealing plate; 10. Thermal conductive silicone pad; 11. Heat sink; 12. Slider; 13. Top plate; 14. Shock-absorbing pad; 15. Thermal conductive sheet; 16. Copper pillar; 17. Limiting box; 18. Fixing plate; 19. Spring; 20. Limiting post; 21. Connecting rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] This utility model provides a technical solution: such as Figures 1-4 As shown, a high-precision surface mount capacitor includes a U-shaped base 1. Slide grooves 6 are provided on both inner sides of the U-shaped base 1. A slider 12 is slidably connected to each slide groove 6. The two sliders 12 together mount the capacitor body 5, and the sliders 12 can be welded to the capacitor body 5. A top plate 13 is slidably connected to the two slide grooves 6. A shock-absorbing pad 14 is installed on the bottom surface of the top plate 13, and the shock-absorbing pad 14 abuts against the top surface of the capacitor body 5. A limiting mechanism is provided on the top surface of the top plate 13, a heat-conducting mechanism is provided on the bottom surface of the capacitor body 5, and a heat dissipation mechanism is provided on the top surface of the U-shaped base 1. The heat dissipation mechanism and the heat-conducting mechanism are in flexible contact.

[0022] The top plate 13 can press the capacitor body 5 tightly, providing a limit and fixation for the capacitor body 5, and the shock-absorbing pad 14 absorbs vertical vibration energy, reducing the impact of vibration on the capacitor body 5.

[0023] Furthermore, the heat conduction mechanism includes a heat conduction sheet 15, which is installed on the bottom surface of the capacitor body 5. Multiple copper pillars 16 are installed inside the heat conduction sheet 15, and the multiple copper pillars 16 are distributed in a rectangular array. By attaching the heat conduction sheet 15 to the surface of the capacitor body 5, heat can be evenly distributed, and a high heat conduction path can be provided through the multiple copper pillars 16, and the symmetry of heat distribution can be ensured.

[0024] Furthermore, the heat dissipation mechanism includes a heat sink 11, which is mounted on the top surface of the U-shaped base 1. A thermally conductive silicone pad 10 is mounted on the top surface of the heat sink 11, and the bottom end of each copper pillar 16 abuts against the top surface of the thermally conductive silicone pad 10. Heat dissipation can be enhanced by liquid cooling through the heat sink 11, and the thermally conductive silicone pad 10 can fill the gap between the copper pillar 16 and the heat sink 11, compensate for tolerances, and reduce contact thermal resistance.

[0025] Furthermore, the limiting mechanism includes multiple limiting boxes 17, each limiting box 17 is slidably connected to a limiting post 20, and each limiting post 20 is locked in the U-shaped seat 1. A fixing plate 18 is fixedly installed on the outside of each limiting post 20. A spring 19 is installed between the outside of each fixing plate 18 and the side wall of the limiting box 17 corresponding to the position. A connecting rod 21 is installed on the other end of the multiple limiting posts 20 located on the same side. The spring 19 can make the limiting post 20 tightly locked in the U-shaped seat 1, thereby maintaining the limiting of the top plate 13.

[0026] Furthermore, mounting plates 2 are fixedly installed on both outer sides of the U-shaped base 1, and auxiliary plates 3 are fixedly installed on both outer sides of the U-shaped base 1. Each mounting plate 2 has multiple second openings 8 on its top surface, and each auxiliary plate 3 has multiple first openings 4 on its outer side. The mounting plates 2 and auxiliary plates 3 can enhance the stability of the U-shaped base 1 during installation, and the second openings 8 and first openings 4 can reduce the weight of the device.

[0027] Furthermore, multiple limiting holes 7 are provided on both inner sides of the U-shaped base 1, and each limiting post 20 is locked in the corresponding limiting box 17. Two sealing plates 9 are symmetrically installed on both inner sides of the U-shaped base 1. The sealing plates 9 can reduce the entry of external dust into the welding points of the slider 12 and the capacitor body 5.

[0028] This utility model provides a high-precision surface mount capacitor. The specific working principle is as follows: The operator first welds the U-shaped base 1 onto the PCB board through the mounting plate 2 and the auxiliary plate 3. Then, the slider 12 is welded to both ends of the capacitor body 5. After that, the capacitor body 5 is slid into the slide groove 6 by the two sliders 12, and the top plate 13 is slid into the slide groove 6. By pulling the connecting rod 21 outward, each limiting post 20 is moved into the limiting box 17. Then, under the elastic force of the spring 19, the limiting post 20 is firmly locked in the limiting hole 7, thereby completing the installation of the capacitor body 5. The installation and disassembly are convenient.

[0029] Furthermore, when the capacitor body 5 receives external vibrations, the vibration transmission to the capacitor body 5 can be reduced through the shock-absorbing pad 14. When the capacitor body 5 is working, the heat of the capacitor body 5 can be conducted out through the heat-conducting plate 15 and the copper pillar 16, and transferred to the heat sink 11 through the thermally conductive silicone pad 10 to achieve heat dissipation. The flexible contact between the copper pillar 16 and the heat sink 11 can compensate for assembly tolerances, reduce contact resistance, and allow the heat generated by the capacitor body 5 to be quickly conducted to the heat sink 11 for rapid heat dissipation. In addition, the thermally conductive silicone pad 10 has a certain degree of softness and can absorb part of the vibration energy of the capacitor body 5 through deformation.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-precision surface mount capacitor, comprising a U-shaped base (1), characterized in that, The U-shaped base (1) has two inner sides with sliding grooves (6), and each sliding groove (6) is slidably connected to a slider (12). The two sliders (12) are jointly installed with a capacitor body (5). The two sliding grooves (6) are jointly slidably connected with a top plate (13). The bottom surface of the top plate (13) is equipped with a shock-absorbing pad (14), and the shock-absorbing pad (14) abuts against the top surface of the capacitor body (5). The top surface of the top plate (13) is provided with a limiting mechanism. The bottom surface of the capacitor body (5) is provided with a heat-conducting mechanism. The top surface of the U-shaped base (1) is provided with a heat dissipation mechanism, and the heat dissipation mechanism and the heat-conducting mechanism are in flexible contact.

2. The high-precision surface mount capacitor according to claim 1, characterized in that, The heat conduction mechanism includes a heat conduction sheet (15), and the heat conduction sheet (15) is installed on the bottom surface of the capacitor body (5). Multiple copper pillars (16) are installed inside the heat conduction sheet (15), and the multiple copper pillars (16) are distributed in a rectangular array.

3. A high-precision surface mount capacitor according to claim 2, characterized in that, The heat dissipation mechanism includes a heat sink (11), and the heat sink (11) is installed on the top surface of the U-shaped base (1). A thermally conductive silicone pad (10) is installed on the top surface of the heat sink (11), and the bottom end of each copper pillar (16) abuts against the top surface of the thermally conductive silicone pad (10).

4. A high-precision surface mount capacitor according to claim 3, characterized in that, The limiting mechanism includes multiple limiting boxes (17), each limiting box (17) is slidably connected to a limiting post (20), and each limiting post (20) is locked in a U-shaped seat (1). A fixing plate (18) is fixedly installed on the outside of each limiting post (20). A spring (19) is installed between the outside of each fixing plate (18) and the side wall of the limiting box (17) corresponding to the position. A connecting rod (21) is installed on the other end of the multiple limiting posts (20) located on the same side.

5. A high-precision surface mount capacitor according to claim 4, characterized in that, Mounting plates (2) are fixedly installed on both sides of the U-shaped base (1), and auxiliary plates (3) are fixedly installed on both sides of the U-shaped base (1). Each mounting plate (2) has multiple second openings (8) on its top surface, and each auxiliary plate (3) has multiple first openings (4) on its outer side.

6. A high-precision surface mount capacitor according to claim 5, characterized in that, The U-shaped seat (1) has multiple limiting holes (7) on both inner sides, and each limiting post (20) is locked in the corresponding limiting box (17). Two sealing plates (9) are symmetrically installed on both inner sides of the U-shaped seat (1).

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