Safe grounding AC motor capacitor

Abstract

The utility model relates to the technical field of power capacitors, in particular to a safe grounding alternating-current motor capacitor, which comprises a capacitor body, a protective frame and a buckle mechanism, and is characterized in that the capacitor body is arranged in the protective frame; the top of the capacitor body is provided with a threaded column, the protection frame is provided with a buckle groove, and the threaded column passes through the buckle groove. The buckle mechanism comprises a positioning plate, clamping plates and inclined struts, the clamping plates are arranged on the left side and the right side of the positioning plate, the bottoms of the clamping plates penetrate through the buckle grooves to abut against the bottom of the protection frame, and the inclined struts are arranged on the side walls of the clamping plates and abut against the top of the protection frame. The positioning plate is fixedly connected with the threaded column, and the positioning plate, the clamping plate and the inclined strut are made of metal conductive materials. According to the utility model, the capacitor body can be fixed in the protection frame, so that the capacitor is prevented from loosening or falling off during installation and use; moreover, the buckle mechanism made of a metal conductive material can achieve the grounding protection of the capacitor body. The installation of capacitor bodies with different sizes can be adapted; and the adaptability and flexibility of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of power capacitor technology, specifically a safe and groundable AC motor capacitor. Background Technology

[0002] In low-voltage power distribution, power capacitors are indispensable. Because the casing of a capacitor is made of metal, it is easy for induced charges to accumulate. If these induced charges are not released through a reliable grounding method, electric shock accidents can easily occur. Therefore, in order to ensure the safety of power capacitors and related personnel, reliable grounding of power capacitors must be guaranteed.

[0003] Chinese patent CN219085821U discloses a grounding structure for a power capacitor, including a grounding assembly on which a power capacitor body is detachably mounted. A recessed groove is centrally located on the lower end face of the power capacitor body, and grounding posts connected to the power capacitor body are symmetrically arranged on the top wall of the recessed groove. The grounding assembly includes a receiving seat with a centrally located track groove on its upper end face. A movable circular block is slidably mounted in the track groove, and positioning grooves are centrally located on both sides of the inner wall of the track groove. Positioning protrusions that can be inserted into the positioning grooves are symmetrically arranged on the outer edge of the movable circular block, and a grounding structure for the grounding post to be inserted into is provided on the upper end face of the movable circular block. The grounding structure includes a grounding end connected to the center of the upper end face of the movable circular block at its bottom.

[0004] However, this patent also has the following problems: when the power capacitor is installed inside the equipment, its grounding structure is not easy to connect with the internal power capacitor, which makes it impossible for the power capacitor inside the equipment to maintain a grounded state, affecting safety. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a safe and groundable AC motor capacitor, solving the problem of unstable grounding of internal power capacitors. The snap-fit ​​groove on the equipment (protective frame) ensures stable installation of the power capacitor while facilitating grounding.

[0006] To achieve the above objectives, a safe and groundable AC motor capacitor is provided according to an embodiment of the first aspect of this utility model, comprising a capacitor body, a protective frame, and a snap-fit ​​mechanism. The capacitor body is disposed within the protective frame. A threaded post is provided on the top of the capacitor body, and a snap-fit ​​groove is provided on the protective frame, through which the threaded post passes. The snap-fit ​​mechanism includes a positioning plate, a locking plate, and a diagonal brace. The locking plates are provided on the left and right sides of the positioning plate, and the bottom of the locking plates passes through the snap-fit ​​groove and abuts against the bottom of the protective frame. The diagonal brace is provided on the side wall of the locking plate and abuts against the top of the protective frame. The positioning plate is fixedly connected to the threaded post, and the positioning plate, locking plate, and diagonal brace are made of conductive metal.

[0007] As a further embodiment of this utility model: the positioning plate and the card plate are an integral structure, and the card plate and the positioning plate are elastically connected. The card plate has abutment interfaces at both ends of its side wall, and the abutment interfaces are provided with the diagonal brace at the top. The diagonal brace and the card plate are an integral structure, and the diagonal brace and the card plate are elastically connected.

[0008] As a further embodiment of this utility model: limiting plates are provided on the front and rear sides of the positioning plate, rectangular grooves are provided on both sides of the threaded column, and a support mechanism is provided on the side of the limiting plate near the rectangular groove, the support mechanism abutting against the side wall of the rectangular groove.

[0009] As a further embodiment of this utility model: the support mechanism includes a support plate, a guide rod, and a connecting plate. The support plate is disposed on the side of the limiting plate near the rectangular groove. One end of the support plate abuts against the side wall of the rectangular groove, and the other end is provided with the guide rod. The guide rod passes through the limiting plate and is fixedly connected to the connecting plate. The guide rod slides with the limiting plate. A spring is provided between the connecting plate and the limiting plate, and the spring is sleeved on the guide rod.

[0010] As a further embodiment of this utility model: the bottom of the support plate is provided with a relief groove, which is inclined relative to the threaded column.

[0011] As a further embodiment of this utility model: the bottom of the card plate is provided with a bending part, and the side of the bending part away from the positioning plate is provided with an abutting part, which abuts against the bottom of the protective frame.

[0012] As a further embodiment of this utility model, a through hole is provided at the connection between the card plate and the bent part.

[0013] As a further embodiment of this utility model: a threaded hole is provided at the top of the threaded column, a positioning hole is provided on the positioning plate, and a bolt is provided between the positioning hole and the threaded hole, the bolt passing through the positioning hole and threadedly engaging with the threaded hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through its snap-fit ​​mechanism design, ensures the capacitor body is stably fixed within the protective frame, preventing loosening or detachment during installation and use, thus improving the safety and reliability of the equipment. Simultaneously, the metal conductive snap-fit ​​mechanism provides grounding protection for the capacitor body, further enhancing equipment safety. Furthermore, due to the snap-fit ​​mechanism's elastic deformation capability, it can adapt to protective frames and capacitor bodies of different sizes. This design allows the capacitor to be widely used in various power systems, improving the adaptability and flexibility of the equipment.

[0016] 2. By setting up a support mechanism, the capacitor body can be more stably supported during installation, preventing loosening or falling off due to improper installation or external force. At the same time, the contact between the support plate and the rectangular groove, as well as the elastic support of the spring, jointly ensure the stability of the capacitor body within the protective frame and can adapt to threaded columns of different sizes, improving the adaptability and flexibility of the equipment.

[0017] 3. By setting an avoidance groove, this utility model can cleverly avoid the protruding part of the threaded column, ensuring that the support plate can slide smoothly into and fit against the side wall of the rectangular groove; at the same time, the inclined design of the avoidance groove not only provides enough space to avoid direct collision with the threaded column, but also plays a certain guiding role, guiding the support plate to move to the side wall of the rectangular groove in the correct direction. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a safe and groundable AC motor capacitor.

[0019] Figure 2 This is a schematic diagram showing the installation of the snap-fit ​​mechanism and the protective frame.

[0020] Figure 3 This is a schematic diagram showing the installation of the capacitor body and the protective frame.

[0021] Figure 4 This is a schematic diagram showing the installation of the capacitor body and the snap-fit ​​mechanism.

[0022] Figure 5 Schematic diagram of the three-dimensional structure of the latching mechanism Figure 1 .

[0023] Figure 6 Schematic diagram of the three-dimensional structure of the latching mechanism Figure 2 .

[0024] The attached figures are labeled as follows: 1. Capacitor body; 11. Threaded post; 12. Rectangular groove; 13. Threaded hole; 2. Protective frame; 21. Clip groove; 3. Positioning plate; 31. Positioning hole; 4. Clamping plate; 41. Abutment interface; 42. Diagonal brace; 5. Limiting plate; 6. Support plate; 61. Clearance groove; 62. Guide rod; 63. Connecting plate; 64. Spring; 7. Bending part; 71. Abutment part; 72. Through hole; 8. Bolt. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figures 1 to 6 As shown, a safe and groundable AC motor capacitor includes a capacitor body 1, a protective frame 2, and a snap-fit ​​mechanism. The capacitor body 1 is disposed inside the protective frame 2. A threaded post 11 is provided on the top of the capacitor body 1, and a snap-fit ​​groove 21 is provided on the protective frame 2. During installation, the capacitor body 1 is first placed inside the protective frame 2, and the threaded post 11 on the top of the capacitor body 1 passes through the snap-fit ​​groove 21 on the protective frame 2.

[0027] The buckling mechanism includes a positioning plate 3, a clamping plate 4, and a diagonal brace 42. The clamping plate 4 is provided on the left and right sides of the positioning plate 3. The bottom of the clamping plate 4 passes through the buckling groove 21 and abuts against the bottom of the protective frame 2. The diagonal brace 42 is provided on the side wall of the clamping plate 4 and abuts against the top of the protective frame 2. The positioning plate 3 and the clamping plate 4 are integral structures, and the clamping plate 4 is elastically connected to the positioning plate 3. The clamping plate 4 has abutment interfaces 41 at both ends of the side wall, and the diagonal brace 42 is provided on the top of the abutment interface 41. The diagonal brace 42 is integral with the clamping plate 4 and is elastically connected to the clamping plate 4.

[0028] The positioning plate 3 of the latching mechanism is fixedly connected to the threaded post 11. Since the positioning plate 3 has latching plates 4 on both sides, and the bottom of the latching plates 4 can pass through the latching groove 21 and abut against the bottom of the protective frame 2, the positioning plate 3 can drive the latching plates 4 to move downward and lock onto the protective frame 2 after it is fixed. At the same time, the diagonal brace 42 provided on the side wall of the latching plate 4 will abut against the top of the protective frame 2, further enhancing the stability of the latching mechanism.

[0029] The positioning plate 3, the clamping plate 4, and the diagonal brace 42 are made of conductive metal, thus the entire latching mechanism has good conductivity. When the capacitor body 1 needs to be grounded, it can be connected to the grounding device through the latching mechanism to achieve safe and reliable grounding protection.

[0030] The snap-fit ​​mechanism design ensures that the capacitor body 1 is stably fixed within the protective frame 2, preventing loosening or detachment during installation and use, thus improving the safety and reliability of the equipment. Simultaneously, the conductive metal snap-fit ​​mechanism provides grounding protection for the capacitor body 1, further enhancing equipment safety. Furthermore, the snap-fit ​​mechanism's elastic deformation capability allows it to adapt to different sizes of protective frames 2 and capacitor bodies 1. This design enables the capacitor to be widely used in various power systems, improving the equipment's adaptability and flexibility.

[0031] Limiting plates 5 are provided on the front and rear sides of the positioning plate 3. Rectangular grooves 12 are opened on both sides of the threaded column 11. A support mechanism is provided on the side of the limiting plate 5 near the rectangular groove 12. The support mechanism includes a support plate 6, a guide rod 62 and a connecting plate 63. The support plate 6 is located on the side of the limiting plate 5 near the rectangular groove 12. One end of the support plate 6 abuts against the side wall of the rectangular groove 12, and the other end is provided with the guide rod 62. The guide rod 62 passes through the limiting plate 5 and is fixedly connected to the connecting plate 63. The guide rod 62 slides with the limiting plate 5. A spring 64 is provided between the connecting plate 63 and the limiting plate 5. The spring 64 is sleeved on the guide rod 62.

[0032] Rectangular slots 12 are formed on both sides of the threaded post 11 of the capacitor body 1, and limiting plates 5 are set on the front and rear sides of the positioning plate 3. When the capacitor body 1 is placed in the protective frame 2 and the threaded post 11 passes through the snap-fit ​​slot 21, the limiting plate 5 will approach the rectangular slot 12. At this time, the support plate 6 is set on the side of the limiting plate 5 near the rectangular slot 12, with one end abutting against the side wall of the rectangular slot 12, playing a preliminary positioning role; the other end of the support plate 6 is provided with a guide rod 62, which passes through the limiting plate 5 and is fixedly connected to the connecting plate 63. Since the guide rod 62 slides with the limiting plate 5, the support plate 6 can move within a certain range to adapt to different sizes of threaded post 11 and rectangular slot 12; a spring 64 is set between the connecting plate 63 and the limiting plate 5, and the spring 64 is sleeved on the guide rod 62. When the support plate 6 abuts against the side wall of the rectangular slot 12, the spring 64 is compressed, providing additional support force for the support plate 6 and ensuring the stability of the capacitor body 1 in the protective frame 2.

[0033] By setting up a support mechanism, the capacitor body 1 can be more stably supported during installation, preventing loosening or falling off due to improper installation or external force. At the same time, the contact between the support plate 6 and the rectangular groove 12, as well as the elastic support of the spring 64, jointly ensure the stability of the capacitor body 1 within the protective frame 2, and can adapt to threaded columns 11 of different sizes, improving the adaptability and flexibility of the equipment.

[0034] The bottom of the support plate 6 is provided with a relief groove 61, which is inclined relative to the threaded post 11.

[0035] When the capacitor body 1 is placed inside the protective frame 2 and the threaded post 11 passes through the snap-fit ​​groove 21, the clearance groove 61 at the bottom of the support plate 6 can cleverly avoid the protruding part of the threaded post 11, ensuring that the support plate 6 can slide smoothly into and fit against the side wall of the rectangular groove 12.

[0036] The inclined design of the clearance groove 61 not only provides enough space to avoid direct collision with the threaded post 11, but also plays a certain guiding role, guiding the support plate 6 to move in the correct direction to the side wall of the rectangular groove 12.

[0037] The bottom of the card plate 4 is provided with a bending part 7, and an abutment part 71 is provided on the side of the bending part 7 away from the positioning plate 3. The abutment part 71 abuts against the bottom of the protective frame 2. A through hole 72 is provided at the connection between the card plate 4 and the bending part 7.

[0038] After the capacitor body 1 is placed inside the protective frame 2 and fixedly connected to the positioning plate 3 via the threaded post 11, the locking plate 4 moves downward and engages with the locking groove 21 of the protective frame 2. At this time, the bent part 7 and its abutment part 71 on the side away from the positioning plate 3 begin to function. The abutment part 71 abuts tightly against the bottom of the protective frame 2, providing additional fixing force for the capacitor body 1 and preventing it from moving in the vertical direction. This design enhances the stability of the capacitor body 1 within the protective frame 2.

[0039] The design of the bending portion 7 allows the locking plate 4 to undergo a certain degree of elastic deformation when it moves downward and engages with the locking slot 21. This deformation helps the locking plate 4 better adapt to the protective frame 2 and locking slot 21 of different sizes, ensuring that the capacitor body 1 can be stably fixed within them. Simultaneously, the elasticity of the bending portion 7 also provides a buffering effect when the locking plate 4 is subjected to external forces, protecting the capacitor body 1 from damage. The through-hole 72 at the connection between the locking plate 4 and the bending portion 7 not only reduces the weight of the locking mechanism but also improves its overall flexibility. The through-hole 72 allows the locking plate 4 to deform to a certain extent when subjected to external forces, thereby absorbing impact and protecting the capacitor body 1.

[0040] The threaded post 11 has a threaded hole 13 at its top, and the positioning plate 3 has a positioning hole 31. A bolt 8 is provided between the positioning hole 31 and the threaded hole 13. The bolt 8 passes through the positioning hole 31 and is threadedly engaged with the threaded hole 13.

[0041] The design of bolt 8 makes it easier and faster to disassemble or replace the capacitor body 1 when needed. The capacitor body 1 can be easily removed by simply unscrewing bolt 8 from the threaded hole 13 using appropriate tools.

[0042] The working principle of this utility model is as follows: During installation, the capacitor body 1 is first placed inside the protective frame 2. The threaded post 11 at the top of the capacitor body 1 passes through the snap-fit ​​groove 21 opened on the protective frame 2. Next, the positioning plate 3 of the snap-fit ​​mechanism is fixedly connected to the threaded post 11. Since the positioning plate 3 has snap-fit ​​plates 4 on its left and right sides, and the bottom of the snap-fit ​​plates 4 can pass through the snap-fit ​​groove 21 and abut against the bottom of the protective frame 2, the positioning plate 3 can drive the snap-fit ​​plates 4 to move downward and snap onto the protective frame 2 after it is fixed. At the same time, the diagonal brace 42 provided on the side wall of the snap-fit ​​plates 4 abuts against the top of the protective frame 2, further enhancing the stability of the snap-fit ​​mechanism. Because the positioning plate 3 and the clamping plate 4 are an integral structure, and the clamping plate 4 and the positioning plate 3 are elastically connected, the clamping plate 4 has a certain elastic deformation capacity during installation, which can better adapt to the protective frame 2 and capacitor body 1 of different sizes. At the same time, the abutment interfaces 41 opened at both ends of the side wall of the clamping plate 4 and the diagonal brace 42 set at the top ensure that the clamping plate 4 can maintain a stable abutment state when subjected to external forces, preventing the capacitor body 1 from loosening or falling off during installation. Since the positioning plate 3, the clamping plate 4, and the diagonal brace 42 are all made of conductive metal, the entire buckling mechanism has good conductivity. When the capacitor body 1 needs to be grounded, it can be connected to the grounding device through the buckling mechanism to achieve safe and reliable grounding protection.

[0043] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A safe, groundable AC motor capacitor, comprising a capacitor body (1), a protective frame (2), and a snap-fit ​​mechanism, wherein the capacitor body (1) is disposed within the protective frame (2); characterized in that, The capacitor body (1) is provided with a threaded post (11) at the top, and the protective frame (2) is provided with a snap-fit ​​groove (21). The threaded post (11) passes through the snap-fit ​​groove (21) and is located at the top of the protective frame (2). The buckling mechanism includes a positioning plate (3), a clamping plate (4), and a diagonal brace (42). The positioning plate (3) is provided with the clamping plate (4) on its left and right sides. The bottom of the clamping plate (4) passes through the buckling groove (21) and abuts against the bottom of the protective frame (2). The side wall of the clamping plate (4) is provided with the diagonal brace (42), which abuts against the top of the protective frame (2). The positioning plate (3) is fixedly connected to the threaded post (11). The positioning plate (3), the clamping plate (4), and the diagonal brace (42) are all made of conductive metal.

2. The safe, groundable AC motor capacitor according to claim 1, characterized in that, The positioning plate (3) and the card plate (4) are an integral structure, and the card plate (4) and the positioning plate (3) are elastically connected. The card plate (4) has abutment interfaces (41) at both ends of its side wall, and the abutment interface (41) is provided with the diagonal brace (42) at the top. The diagonal brace (42) and the card plate (4) are an integral structure, and the diagonal brace (42) and the card plate (4) are elastically connected.

3. A safe, groundable AC motor capacitor according to claim 1, characterized in that, The positioning plate (3) is provided with limiting plates (5) on the front and rear sides, and the threaded column (11) is provided with rectangular grooves (12) on both sides. The limiting plate (5) is provided with a support mechanism on the side near the rectangular groove (12).

4. A safe, groundable AC motor capacitor according to claim 3, characterized in that, The support mechanism includes a support plate (6), a guide rod (62), and a connecting plate (63). The support plate (6) is located on the side of the limiting plate (5) near the rectangular groove (12). One end of the support plate (6) abuts against the side wall of the rectangular groove (12), and the other end is provided with the guide rod (62). The guide rod (62) passes through the limiting plate (5) and is fixedly connected to the connecting plate (63). The guide rod (62) slides with the limiting plate (5). A spring (64) is provided between the connecting plate (63) and the limiting plate (5). The spring (64) is sleeved on the guide rod (62).

5. A safe, groundable AC motor capacitor according to claim 4, characterized in that, The support plate (6) is provided with a relief groove (61) at the bottom, and the relief groove (61) is inclined relative to the threaded column (11).

6. A safe, groundable AC motor capacitor according to claim 1, characterized in that, The bottom of the card plate (4) is provided with a bending part (7), and the side of the bending part (7) away from the positioning plate (3) is provided with an abutting part (71), which abuts against the bottom of the protective frame (2).

7. A safe, groundable AC motor capacitor according to claim 6, characterized in that, A through hole (72) is provided at the connection between the card plate (4) and the bent part (7).

8. A safe, groundable AC motor capacitor according to claim 1, characterized in that, The threaded column (11) has a threaded hole (13) at the top, and the positioning plate (3) has a positioning hole (31). A bolt (8) is provided between the positioning hole (31) and the threaded hole (13), and the bolt (8) passes through the positioning hole (31) and is threadedly engaged with the threaded hole (13).

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