Capacitor

Abstract

The utility model is applied to the field of electronic components, and particularly relates to a capacitor, which comprises an insulator with a cavity inside; the first conductor is of a cylindrical structure, and the first conductor is installed outside one end of the insulator; the end plate is arranged at the other end of the insulator, a through hole is formed in the end plate, a guide structure is fixed on the end plate and extends into the insulator, a guide groove is formed in the guide structure, and the extension direction of the guide groove is the same as the distribution direction of the first conductor and the end plate on the insulator; the second conductor is of a cylindrical structure, the guide structure is sleeved with the second conductor, a limiting plate is arranged on the second conductor, and the limiting plate is assembled in the guide groove in a sliding mode; the adjusting rod is arranged in the through hole in a penetrating mode and extends into the guiding structure, the extending direction of the adjusting rod is the same as the extending direction of the guiding groove, the adjusting rod is in threaded connection with the second conductor, the adjusting rod is used for driving the second conductor to move in the axial direction of the adjusting rod, and the capacitor can reduce the space occupancy rate and is smaller in size.

Description

Technical Field

[0001] The utility model is used in the field of electronic components, in particular to a capacitor. Background Art

[0002] At present, adjustable capacitors can play a fine-tuning role in the filtering or coupling circuit in the circuit, so as to achieve the high-precision effect of the circuit. The capacitor with adjustable capacitance is also called a variable capacitor, which is usually used as a tuning capacitor. Its principle is to adjust the capacitance by changing the relative effective area between the plates. The internal structure of the current adjustable capacitance capacitor is generally to set two relative plates, one of which can move, so as to increase or decrease the relative effective area between the two plates. When the two plates are completely opposite, the capacitance is the largest, and when the two plates are completely staggered, the capacitance is the smallest, close to zero. However, the plates occupy more space inside the capacitor, resulting in a larger structural volume of the capacitance and low space utilization. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the utility model provides a capacitor, and the technical solution adopted is as follows.

[0004] A capacitor comprising

[0005] An insulator, wherein the insulator has a cavity inside;

[0006] A first conductor, the first conductor is a cylindrical structure, and the first conductor is installed outside one end of the insulator;

[0007] an end plate, the end plate being arranged at the other end of the insulator, the end plate being provided with a through hole, a guide structure being fixed on the end plate, the guide structure extending into the interior of the insulator, a guide groove being provided on the guide structure, and an extension direction of the guide groove being the same as a distribution direction of the first conductor and the end plate on the insulator;

[0008] A second conductor, wherein the second conductor is a cylindrical structure, the second conductor is sleeved on the guide structure, a limiting plate is provided on the second conductor, and the limiting plate is slidably assembled in the guide groove;

[0009] An adjusting rod, wherein the adjusting rod is passed through the through hole and extends into the guide structure, the extension direction of the adjusting rod is the same as the extension direction of the guide groove, the adjusting rod can rotate relative to the end plate, the adjusting rod is threadedly connected to the second conductor, and the adjusting rod is used to drive the second conductor to move along the axial direction of the adjusting rod.

[0010] The capacitor according to the embodiment of the utility model has at least the following beneficial effects: when the capacitance of the capacitor needs to be adjusted, the adjusting rod is rotated, and the adjusting rod drives the second conductor to move back and forth along the axial direction of the adjusting rod, and the purpose of capacitance adjustment is achieved by changing the relative effective area between the first conductor and the second conductor. The first conductor and the second conductor of this capacitor are both cylindrical structures. Therefore, compared with capacitors with flat-plate structures, the cylindrical structure of the conductor in the present application can save more space, reduce space occupancy, and the volume of the entire capacitor is also smaller.

[0011] According to some other embodiments of the capacitor of the present invention, a first connecting sleeve is provided on the second conductor, and the first connecting sleeve is threadedly connected to the adjusting rod.

[0012] According to other embodiments of the capacitor of the present invention, a second connecting sleeve aligned with the through hole is provided on the end plate, a first assembly channel is provided in the second connecting sleeve, and the first connecting sleeve is movably fitted in the first assembly channel.

[0013] According to other embodiments of the capacitor of the present invention, an outer wall of the second connecting sleeve is provided with an external thread, the external thread extends from one end to the other end of the second connecting sleeve, and a fixing nut is connected to the second connecting sleeve.

[0014] According to other embodiments of the capacitor of the present invention, a first assembly step is provided on the insulator, a collar is mounted on the first assembly step, and the collar is pressed tightly between the end plate and a step surface of the assembly step.

[0015] According to some other embodiments of the capacitor of the present invention, a first clamping plate is provided on the first assembly step, a first clamping groove is provided on the sleeve ring, and the first clamping plate is embedded in the first clamping groove.

[0016] According to some other embodiments of the capacitor of the present invention, the insulator is provided with a second assembly step, the second assembly step is provided with a second clamping plate, the first conductor is provided with a second clamping groove inside, the first conductor is sleeved on the second assembly step, and the second clamping plate is embedded in the second clamping groove.

[0017] According to some other embodiments of the capacitor of the present invention, a limiting end plate and a fastener are provided at one end of the adjusting rod extending into the guide structure, the fastener is fixed to the end of the adjusting rod, the limiting end plate is rotatably matched with the adjusting rod, and the limiting end plate is defined between the fastener and the end face of the guide structure.

[0018] According to other embodiments of the capacitor of the present invention, the adjusting rod has a threaded segment and a polished rod segment, the threaded segment is connected to one end of the polished rod segment, the diameter of the threaded segment is smaller than the diameter of the polished rod segment, the threaded segment is threadedly connected to the first connecting sleeve, the threaded segment is located inside the insulator, and the polished rod segment is movably fitted in the second connecting sleeve and extends outward.

[0019] According to some other embodiments of the capacitor of the present invention, a second assembly channel is provided in the second connecting sleeve relative to the first assembly channel, the diameter of the second assembly channel is larger than the diameter of the first assembly channel, the light rod segment is movably assembled in the second assembly channel, and a sealing ring is provided between the end face of the light rod segment and the second assembly channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of an insulator in one embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the second conductor in one embodiment of the utility model;

[0025] Figure 5 It is a partial structural schematic diagram of an embodiment of the utility model;

[0026] Figure 6 It is a partial structural schematic diagram of an embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the structure of a first conductor in one embodiment of the utility model;

[0028] Figure 8 It is a structural schematic diagram of an adjusting rod in one embodiment of the utility model. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the concept and technical effects of the utility model in combination with the embodiments, so as to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model.

[0030] In the description of the embodiments of the present invention, if orientation descriptions are involved, the orientations or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected", or "installed" on another feature, it may be directly set, fixed, or connected on the other feature, or it may be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than", or "exceeds" is involved, it should be understood as not including the number itself, and if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] At present, adjustable capacitors can play a fine-tuning role in the filtering or coupling circuit in the circuit, so as to achieve the high-precision effect of the circuit. The capacitor with adjustable capacitance is also called a variable capacitor, which is usually used as a tuning capacitor. Its principle is to adjust the capacitance by changing the relative effective area between the plates. The internal structure of the current adjustable capacitance capacitor is generally to set two relative plates, one of which can move, so as to increase or decrease the relative effective area between the two plates. When the two plates are completely opposite, the capacitance is the largest, and when the two plates are completely staggered, the capacitance is the smallest, close to zero. However, the plates occupy more space inside the capacitor, resulting in a larger structural volume of the capacitance and low space utilization.

[0033] See also Figures 1 to 8The utility model provides a capacitor, including an insulator 100, a first conductor 200, an end plate 300, a second conductor 400 and an adjusting rod 500. The insulator 100 has a cavity 201 inside. The first conductor 200 is a cylindrical structure. The first conductor 200 is installed outside one end of the insulator 100. The end plate 300 is arranged at the other end of the insulator 100. A through hole is provided on the end plate 300. A guide structure 310 is fixed on the end plate 300. The guide structure 310 extends into the interior of the insulator 100. A guide groove 311 is provided on the guide structure 310. The extension direction of the guide groove 311 is parallel to the first conductor 200 and the end plate 300. The plates 300 are distributed in the same direction on the insulator 100. The second conductor 400 is a cylindrical structure. The second conductor 400 is sleeved on the guide structure 310. A limit plate 401 is provided on the second conductor 400. The limit plate 401 is slidably assembled in the guide groove 311. The adjustment rod 500 is penetrated in the through hole and extends into the guide structure 310. The extension direction of the adjustment rod 500 is the same as the extension direction of the guide groove 311. The adjustment rod 500 can rotate relative to the end plate 300. The adjustment rod 500 is threadedly connected to the second conductor 400. The adjustment rod 500 is used to drive the second conductor 400 to move along the axial direction of the adjustment rod 500.

[0034] When the capacitance of the capacitor needs to be adjusted, the adjusting rod 500 is rotated, and the adjusting rod 500 drives the second conductor 400 to move back and forth along the axial direction of the adjusting rod 500, and the purpose of capacitance adjustment is achieved by changing the relative effective area between the first conductor 200 and the second conductor 400. The first conductor 200 and the second conductor 400 of this capacitor are both cylindrical structures. Therefore, compared with capacitors with flat-plate conductors, the cylindrical conductor of the present application can save more space, reduce space occupancy, and the volume of the entire capacitor is also smaller.

[0035] The insulator 100 is a cylindrical tube structure, the first conductor 200 is a tube structure with one end closed and the other end open, and the second conductor 400 is a tube structure with both ends open.

[0036] In some embodiments, a second assembly step 110 is provided on the insulator 100 , a second clamping plate 111 is provided on the second assembly step 110 , a second clamping groove 201 is provided inside the first conductor 200 , the first conductor 200 is installed on the second assembly step 110 , and the second clamping plate 111 is embedded in the second clamping groove 201 .

[0037] Specifically, a second assembly step 110 is provided on the outer wall of the insulator 100, and a second clamping plate 111 extending along the axial direction of the insulator 100 is provided on the step surface of the second assembly step 110. A second clamping groove 201 extending along the axial direction of the first conductor 200 is provided on the inner wall of the first conductor 200. During the installation process, the first conductor 200 is sleeved on the second assembly step 110 and the first conductor 200 is adhered to the second assembly step 110 with instant adhesive, and the second clamping plate 111 is embedded in the second clamping groove 201. The cooperation between the second clamping plate 111 and the second clamping groove 201 prevents the first conductor 200 from rotating relative to the insulator 100.

[0038] In some embodiments, a first assembly step 120 is provided on the insulator 100 , and a collar 600 is installed on the first assembly step 120 . The collar 600 is pressed tightly between the end plate 300 and the step surface of the first assembly step 120 .

[0039] Specifically, the first assembly step 120 is provided on the outer peripheral surface of the insulator 100 near one end of the end plate 300, the sleeve ring 600 is assembled on the first assembly step 120, the end plate 300 is welded and fixed to one end surface of the sleeve ring 600, and the other end surface of the sleeve ring 600 is bonded to the step surface of the first assembly step 120 by instant adhesive.

[0040] Furthermore, a first clamping plate 121 is provided on the first assembly step 120 , a first clamping groove is provided on the collar 600 , and the first clamping plate 121 is embedded in the first clamping groove.

[0041] Specifically, the first clamping plate 121 is fixed on the step surface of the first assembly step 120, and the first clamping plate 121 extends along the axial direction of the insulator 100. The first clamping groove is provided on the inner wall of the ring 600, and the first clamping groove extends along the axial direction of the ring 600. When the ring 600 is installed on the first assembly step 120, the first clamping plate 121 is embedded in the first clamping groove to prevent the ring 600 from rotating relative to the first assembly step 120.

[0042] The end plate 300 is a circular plate structure with a through hole in the middle of the end plate 300. A guide structure 310 is horizontally fixed on one side of the end plate 300. The guide structure 310 is two semi-cylinders arranged horizontally and spaced apart from each other. The adjustment rod 500 passes through the through hole on the end plate 300 and extends between the two semi-cylinders. The distance between the two semi-cylinders is the guide groove 311.

[0043] In some embodiments, a first connecting sleeve 402 is disposed on the second conductor 400 , and the first connecting sleeve 402 is threadedly connected to the adjusting rod 500 .

[0044] Specifically, the limit plate 401 is arranged at one end of the second conductor 400, the first connecting sleeve 402 is vertically fixed in the middle of the limit plate 401, and the limit plate 401 is provided with a hole communicating with the first connecting sleeve 402. The adjusting rod 500 is threadedly connected to the inside of the first connecting sleeve 402 and passes through the hole on the limit plate 401 and then extends into the guide structure 310. The limit plate 401 is assembled in the guide groove 311 and can slide along the guide groove 311.

[0045] In some embodiments, a second connecting sleeve 320 is provided on the end plate 300 and aligned with the through hole. A first assembly channel is provided in the second connecting sleeve 320 , and the first connecting sleeve 402 is movably fitted in the first assembly channel.

[0046] Specifically, the second connecting sleeve 320 is transversely fixed on one side of the end plate 300, the second connecting sleeve 320 and the guide structure 310 are separated on both sides of the end plate 300, the first assembly channel extends from one end of the second connecting sleeve 320 to the middle of the second connecting sleeve 320, the inner diameter of the first assembly channel is the same as the diameter of the through hole on the end plate 300, the outer diameter of the first connecting sleeve 402 is smaller than the inner diameter of the first assembly channel, and the first connecting sleeve 402 at one end of the second conductor 400 is movably assembled in the first assembly channel, thereby realizing the matching connection between the second conductor 400 and the end plate 300, and the overall structure is more compact.

[0047] To facilitate installation of the entire capacitor, in some embodiments, an outer wall of the second connecting sleeve 320 is provided with an external thread extending from one end of the second connecting sleeve 320 to the other end, and a fixing nut 700 is connected to the second connecting sleeve 320 .

[0048] When the capacitor of the present application needs to be installed, the capacitor is moved to the installation platform, the mounting plate on the installation platform is embedded into the gap between the fixing nut 700 and the end plate 300, and then the nut is turned to clamp the mounting plate between the fixing nut 700 and the end plate 300.

[0049] In order to prevent the second conductor 400 from detaching from the guide structure 310, in some embodiments, a limiting end plate 801 and a fastener 802 are provided at one end of the adjusting rod 500 extending into the guide structure 310, and the fastener 802 is fixed to the end of the adjusting rod 500, and the limiting end plate 801 is rotatably matched with the adjusting rod 500, and the limiting end plate 801 is limited between the guide structure 310 and the end face of the guide structure 310.

[0050] Specifically, the fastener 802 is a nut, which is welded and fixed to the end of the adjusting rod 500. An assembly hole is provided in the middle of the limiting end plate 801. The limiting end plate 801 is sleeved on the adjusting rod 500 through the assembly hole, and the limiting end plate 801 can rotate relative to the adjusting rod 500. A limiting step is provided on the limiting end plate 801, and the limiting step cooperates with the end face of the guide structure 310, and the limiting end plate 801 and the fastener 802 are in contact with each other.

[0051] During the rotation of the adjusting rod 500, the limiting end plate 801 is always limited between the guide structure 310 and the fastener 802. When the adjusting rod 500 drives the second conductor 400 to move to the end of the guide structure 310, the limiting end plate 801 will block the limiting plate 401 on the guide structure 310 to prevent the second conductor 400 from moving further.

[0052] In some embodiments, the adjusting rod 500 has a threaded segment 502 and a polished rod segment 501, the threaded segment 502 is connected to one end of the polished rod segment 501, the diameter of the threaded segment 502 is smaller than the diameter of the polished rod segment 501, the threaded segment 502 is threadedly connected to the first connecting sleeve 402, the threaded segment 502 is located inside the insulator 100, and the polished rod segment 501 is movably fitted in the second connecting sleeve 320 and extends outward.

[0053] In order to ensure the sealing of the capacitor, in some embodiments, a second assembly channel is provided in the second connecting sleeve 320 relative to the first assembly channel, the diameter of the second assembly channel is larger than the diameter of the first assembly channel, the light rod segment 501 is movably assembled in the second assembly channel, and a sealing ring is provided between the end face of the light rod segment 501 and the second assembly channel.

[0054] Specifically, the second assembly channel extends from one end of the second connecting sleeve 320 to the middle of the second connecting sleeve 320, one end of the light rod segment 501 extends into the first assembly channel for sliding assembly, and a sealing ring is arranged between the end face of the light rod segment 501 and the second assembly channel to prevent water from entering, and the other end of the light rod segment 501 extends outward from the second connecting sleeve 320.

[0055] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A capacitor, characterized in that: include An insulator, wherein the insulator has a cavity inside; A first conductor, the first conductor is a cylindrical structure, and the first conductor is installed outside one end of the insulator; an end plate, the end plate being arranged at the other end of the insulator, the end plate being provided with a through hole, a guide structure being fixed on the end plate, the guide structure extending into the interior of the insulator, a guide groove being provided on the guide structure, and an extension direction of the guide groove being the same as a distribution direction of the first conductor and the end plate on the insulator; A second conductor, wherein the second conductor is a cylindrical structure, the second conductor is sleeved on the guide structure, a limiting plate is provided on the second conductor, and the limiting plate is slidably assembled in the guide groove; An adjusting rod, wherein the adjusting rod is passed through the through hole and extends into the guide structure, the extension direction of the adjusting rod is the same as the extension direction of the guide groove, the adjusting rod can rotate relative to the end plate, the adjusting rod is threadedly connected to the second conductor, and the adjusting rod is used to drive the second conductor to move along the axial direction of the adjusting rod.

2. The capacitor according to claim 1, characterized in that: The second conductor is provided with a first connecting sleeve, and the first connecting sleeve is threadedly connected to the adjusting rod.

3. The capacitor according to claim 2, characterized in that: The end plate is provided with a second connecting sleeve aligned with the through hole, the second connecting sleeve is provided with a first assembly channel, and the first connecting sleeve is movably fitted in the first assembly channel.

4. The capacitor according to claim 3, characterized in that: An outer wall of the second connecting sleeve is provided with an external thread, and the external thread extends from one end to the other end of the second connecting sleeve. A fixing nut is connected to the second connecting sleeve.

5. The capacitor according to claim 2, characterized in that: The insulator is provided with a first assembly step, a collar is mounted on the first assembly step, and the collar is pressed tightly between the end plate and the step surface of the assembly step.

6. The capacitor according to claim 5, characterized in that: A first clamping plate is provided on the first assembly step, a first clamping groove is provided on the sleeve ring, and the first clamping plate is embedded in the first clamping groove.

7. The capacitor according to claim 1, characterized in that: The insulator is provided with a second assembly step, the second assembly step is provided with a second clamping plate, the first conductor is provided with a second clamping groove inside, the first conductor is sleeved on the second assembly step, and the second clamping plate is embedded in the second clamping groove.

8. The capacitor according to claim 1, characterized in that: One end of the adjusting rod extending into the guide structure is provided with a limiting end plate and a fastener, the fastener is fixed to the end of the adjusting rod, the limiting end plate is rotatably matched with the adjusting rod, and the limiting end plate is defined between the fastener and the end face of the guide structure.

9. The capacitor according to claim 3, characterized in that: The adjusting rod has a threaded segment and a polished rod segment, the threaded segment is connected to one end of the polished rod segment, the diameter of the threaded segment is smaller than the diameter of the polished rod segment, the threaded segment is threadedly connected to the first connecting sleeve, the threaded segment is located inside the insulator, and the polished rod segment is movably fitted in the second connecting sleeve and extends outward.

10. The capacitor according to claim 9, characterized in that: A second assembly channel is provided in the second connecting sleeve relative to the first assembly channel, the diameter of the second assembly channel is larger than the diameter of the first assembly channel, the polished rod segment is movably assembled in the second assembly channel, and a sealing ring is provided between the end face of the polished rod segment and the second assembly channel.

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