Safe grounding AC motor capacitor

Abstract

The invention relates to the technical field of power capacitors, in particular to a safe grounding alternating-current motor capacitor which comprises a capacitor body, a protection frame and a buckle mechanism, and the capacitor body is arranged in the protection 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 invention, 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] The invention relates to the technical field of power capacitors, in particular to a safe groundable AC motor capacitor. Background Art

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

[0003] Chinese patent CN219085821U discloses a grounding structure for a power capacitor, including a grounding component on the top of which a power capacitor body is detachably mounted, a recessed groove is centrally provided on the lower end face of the power capacitor body, and a grounding column connected to the power capacitor body is symmetrically provided on the top wall of the recessed groove, the grounding component includes a receiving seat with a track groove centrally provided on the upper end face, a movable round block is slidably installed in the track groove, and positioning grooves are centrally provided on both sides of the inner wall of the track groove, positioning protrusions that can be plugged and installed in the positioning groove are symmetrically configured on the outer edge surface of the movable round block, and a grounding structure for plugging and installing the grounding column is provided on the upper end face of the movable round block, and the grounding structure includes a grounding terminal connected to the center of the upper end face of the movable round block with a bottom structure.

[0004] However, this patent still has the following problem: when the power capacitor is installed inside the device, its grounding structure is not easy to connect with the internal power capacitor, resulting in the power capacitor inside the device being unable to maintain a grounded state, affecting safety. Summary of the invention

[0005] The purpose of this application is to provide a safe and groundable AC motor capacitor, which solves the problem that the power capacitor inside the equipment cannot be stably grounded. The snap-on groove opened on the equipment can keep the power capacitor installed stably while facilitating grounding.

[0006] To achieve the above-mentioned objectives, the present application provides a safe and groundable AC motor capacitor, comprising a capacitor body, a protective frame and a snap mechanism, wherein the capacitor body is arranged in the protective frame; a threaded column is arranged on the top of the capacitor body, a snap groove is opened on the protective frame, and the threaded column passes through the snap groove; it is located at the top of the protective frame; the snap mechanism comprises a positioning plate, a card plate and a diagonal brace, the card plates are arranged on the left and right sides of the positioning plate, the bottom of the card plate passes through the snap groove and abuts against the bottom of the protective frame, the side wall of the card plate is arranged with the diagonal brace, and the diagonal brace abuts against the top of the protective frame; the positioning plate is fixedly connected to the threaded column, and the positioning plate, the card plate and the diagonal brace are made of metal conductive material.

[0007] As a further solution of the present invention: the positioning plate and the card plate are an integral structure, and the card plate is elastically connected to the positioning plate, abutment interfaces are provided at both ends of the card plate side walls, the diagonal brace is provided on the top of the abutment interface, and the diagonal brace and the card plate are an integral structure, and the diagonal brace is elastically connected to the card plate.

[0008] As a further solution of the present invention: limiting plates are arranged on the front and rear sides of the positioning plate, rectangular grooves are opened on both sides of the threaded column, and a supporting mechanism is arranged on the side of the limiting plate close to the rectangular groove, and the supporting mechanism abuts against the side wall of the rectangular groove.

[0009] As a further solution of the present invention: the supporting mechanism includes a supporting plate, a guide rod and a connecting plate, the supporting plate is arranged on one side of the limiting plate close to the rectangular groove, one end of the supporting 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 is slidably matched with the limiting plate, a spring is arranged between the connecting plate and the limiting plate, and the spring is sleeved on the guide rod.

[0010] As a further solution of the present invention: an avoidance groove is arranged at the bottom of the support plate, and the avoidance groove is arranged obliquely relative to the threaded column.

[0011] As a further solution of the present invention: a bending portion is provided at the bottom of the card plate, and an abutting portion is provided at a side of the bending portion away from the positioning plate, and the abutting portion abuts against the bottom of the protective frame.

[0012] As a further solution of the present invention: a through hole is provided at the connection between the clamping plate and the bending portion.

[0013] As a further solution of the present invention: a threaded hole is provided on the top of the threaded column, a positioning hole is provided on the positioning plate, a bolt is provided between the positioning hole and the threaded hole, and the bolt passes through the positioning hole and is threadably engaged with the threaded hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention uses the design of the buckle mechanism to stably fix the capacitor body in the protective frame, preventing the capacitor from loosening or falling off during installation and use, and improving the safety and reliability of the equipment; at the same time, the buckle mechanism made of metal conductive material can also achieve grounding protection of the capacitor body, further enhancing the safety of the equipment; further, because the buckle mechanism has a certain elastic deformation ability, it can adapt to protective frames and capacitor bodies of different sizes. This design enables the capacitor to be widely used in various power systems, improving the adaptability and flexibility of the equipment.

[0016] 2. By setting up a supporting mechanism, the present invention can provide more stable support for the capacitor body during the installation process to prevent loosening or falling off due to improper installation or external force; at the same time, the abutment between the support plate and the rectangular groove and the elastic supporting effect of the spring jointly ensure the stability of the capacitor body in the protective frame, and can adapt to threaded columns of different sizes, thereby improving the adaptability and flexibility of the equipment.

[0017] 3. The present invention can cleverly avoid the raised part of the threaded column by setting the avoidance groove, ensuring that the support plate can smoothly slide into and fit on the side wall of the rectangular groove; at the same time, the inclined design of the avoidance groove not only provides sufficient 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The invention is a three-dimensional structural schematic diagram of a safe groundable AC motor capacitor.

[0020] Figure 2 This is a schematic diagram of the installation of the snap mechanism and the protective frame.

[0021] Figure 3 This is a schematic diagram of the installation of the capacitor body and the protective frame.

[0022] Figure 4 This is a schematic diagram of the installation of the capacitor body and the snap-on mechanism.

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the buckle mechanism Figure 1 .

[0024] Figure 6 Schematic diagram of the three-dimensional structure of the buckle mechanism Figure 2 .

[0025] The reference numerals in the figure are: 1. capacitor body; 11. threaded column; 12. rectangular groove; 13. threaded hole; 2. protective frame; 21. snap groove; 3. positioning plate; 31. positioning hole; 4. clamping plate; 41. abutment interface; 42. diagonal brace; 5. limit plate; 6. support plate; 61. avoidance groove; 62. guide rod; 63. connecting plate; 64. spring; 7. bending portion; 71. abutment portion; 72. through hole; 8. bolt. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] 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 mechanism, wherein the capacitor body 1 is arranged in the protective frame 2; a threaded column 11 is arranged on the top of the capacitor body 1, and a snap groove 21 is opened on the protective frame 2. During installation, the capacitor body 1 is first placed in the protective frame 2, and the threaded column 11 on the top of the capacitor body 1 passes through the snap groove 21 opened on the protective frame 2.

[0028] The buckle mechanism includes a positioning plate 3, a clamping plate 4 and a diagonal brace 42. The clamping plate 4 is arranged on the left and right sides of the positioning plate 3. The bottom of the clamping plate 4 passes through the buckle 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, and the diagonal brace 42 abuts against the top of the protective frame 2. The positioning plate 3 and the clamping plate 4 are an integral structure, and the clamping plate 4 is elastically connected to the positioning plate 3. Abutment interfaces 41 are provided at both ends of the side wall of the clamping plate 4, and the diagonal brace 42 is arranged on the top of the abutment interface 41. The diagonal brace 42 is an integral structure with the clamping plate 4, and the diagonal brace 42 is elastically connected to the clamping plate 4.

[0029] The positioning plate 3 of the buckle mechanism is fixedly connected to the threaded column 11. Since the clamping plates 4 are arranged on the left and right sides of the positioning plate 3, and the bottom of the clamping plates 4 can pass through the clamping grooves 21 and abut against the bottom of the protection frame 2, the positioning plate 3 can drive the clamping plates 4 to move downward and clamp on the protection frame 2 after being fixed. At the same time, the diagonal braces 42 arranged on the side walls of the clamping plates 4 will abut against the top of the protection frame 2, further enhancing the stability of the buckle mechanism.

[0030] The positioning plate 3, the clamping plate 4 and the diagonal brace 42 are made of metal conductive material, so the entire buckle mechanism has good conductive performance. When the capacitor body 1 needs to be grounded, it can be connected to the grounding device through the buckle mechanism to achieve safe and reliable grounding protection.

[0031] Through the design of the snap mechanism, the capacitor body 1 can be stably fixed in the protective frame 2, preventing the capacitor from loosening or falling off during installation and use, and improving the safety and reliability of the equipment. At the same time, the snap mechanism of the metal conductive material can also realize the grounding protection of the capacitor body 1, further enhancing the safety of the equipment. At the same time, because the snap mechanism has a certain elastic deformation ability, it can adapt to protective frames 2 and capacitor bodies 1 of different sizes. This design enables the capacitor to be widely used in various power systems, improving the adaptability and flexibility of the equipment.

[0032] Limiting plates 5 are provided on the front and rear sides of the positioning plate 3, and rectangular grooves 12 are opened on both sides of the threaded column 11. A supporting mechanism is provided on the side of the limiting plate 5 close to the rectangular groove 12, and the supporting mechanism includes a supporting plate 6, a guide rod 62 and a connecting plate 63. The supporting plate 6 is provided on the side of the limiting plate 5 close to the rectangular groove 12, one end of the supporting 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 with the connecting plate 63, the guide rod 62 is slidably matched with the limiting plate 5, a spring 64 is provided between the connecting plate 63 and the limiting plate 5, and the spring 64 is sleeved on the guide rod 62.

[0033] A rectangular groove 12 is provided on both sides of the threaded column 11 of the capacitor body 1, and a limit plate 5 is provided on both sides of the front and rear of the positioning plate 3. When the capacitor body 1 is placed in the protective frame 2, and the threaded column 11 passes through the buckle groove 21, the limit plate 5 will be close to the rectangular groove 12. At this time, the support plate 6 is arranged on the side of the limit plate 5 close to the rectangular groove 12, and one end thereof abuts against the side wall of the rectangular groove 12, which plays a role in preliminary positioning; a guide rod 62 is provided at the other end of the support plate 6, and the guide rod 62 passes through the limit plate 5 and is fixedly connected to the connecting plate 63. Since the guide rod 62 and the limit plate 5 are slidably matched, the support plate 6 can move within a certain range to adapt to threaded columns 11 and rectangular grooves 12 of different sizes; a spring 64 is provided between the connecting plate 63 and the limit 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 groove 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.

[0034] By setting up a supporting mechanism, the capacitor body 1 can obtain more stable support during the installation process to prevent loosening or falling off due to improper installation or external force; at the same time, the abutment between the support plate 6 and the rectangular groove 12 and the elastic supporting effect of the spring 64 jointly ensure the stability of the capacitor body 1 in the protective frame 2, and can adapt to threaded columns 11 of different sizes, thereby improving the adaptability and flexibility of the equipment.

[0035] The bottom of the support plate 6 is provided with an escape groove 61 , and the escape groove 61 is inclined relative to the threaded column 11 .

[0036] When the capacitor body 1 is placed in the protective frame 2 and the threaded column 11 passes through the snap groove 21, the avoidance groove 61 at the bottom of the support plate 6 can cleverly avoid the raised part of the threaded column 11, ensuring that the support plate 6 can slide smoothly and fit on the side wall of the rectangular groove 12.

[0037] The inclined design of the avoidance groove 61 not only provides sufficient space to avoid direct collision with the threaded column 11 , but also plays a certain guiding role, guiding the support plate 6 to move to the side wall of the rectangular groove 12 in the correct direction.

[0038] The bottom of the clamping plate 4 is provided with a bending portion 7, and a side of the bending portion 7 away from the positioning plate 3 is provided with an abutting portion 71, and the abutting portion 71 abuts against the bottom of the protection frame 2. A through hole 72 is provided at the connection between the clamping plate 4 and the bending portion 7.

[0039] When the capacitor body 1 is placed in the protective frame 2 and fixedly connected to the positioning plate 3 by the threaded column 11, the clamping plate 4 moves downward and snaps into the buckle groove 21 of the protective frame 2. At this time, the bending portion 7 and the abutment portion 71 on the side away from the positioning plate 3 begin to play a role. The abutment portion 71 is tightly abutted against the bottom of the protective frame 2, providing additional fixing force for the capacitor body 1 to prevent it from moving in the vertical direction. This design enhances the stability of the capacitor body 1 in the protective frame 2.

[0040] The design of the bending portion 7 allows the card plate 4 to produce a certain elastic deformation when it moves downward and snaps into the snap groove 21. This deformation helps the card plate 4 to better adapt to the protective frames 2 and snap grooves 21 of different sizes, ensuring that the capacitor body 1 can be stably fixed therein; at the same time, the elastic effect of the bending portion 7 also allows the card plate 4 to produce a certain buffering effect when subjected to external forces, protecting the capacitor body 1 from damage. The through hole 72 opened at the connection between the card plate 4 and the bending portion 7 not only reduces the weight of the snap mechanism, but also improves its overall flexibility. The through hole 72 allows the card plate 4 to produce a certain deformation when subjected to external forces, thereby absorbing the impact force and protecting the capacitor body 1.

[0041] A threaded hole 13 is formed on the top of the threaded column 11 , a positioning hole 31 is formed on the positioning plate 3 , 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 threadably engaged with the threaded hole 13 .

[0042] The design of the bolt 8 makes it more convenient and quick to disassemble or replace the capacitor body 1. The capacitor body 1 can be easily removed by simply unscrewing the bolt 8 from the threaded hole 13 using an appropriate tool.

[0043] Working principle of the present invention: During installation, first place the capacitor body 1 in the protective frame 2. The threaded column 11 on the top of the capacitor body 1 passes through the snap groove 21 provided on the protective frame 2. Next, the positioning plate 3 of the snap mechanism is fixedly connected to the threaded column 11. Since the positioning plate 3 is provided with a card plate 4 on the left and right sides, and the bottom of the card plate 4 can pass through the snap groove 21 and abut against the bottom of the protective frame 2, the positioning plate 3 can drive the card plate 4 to move downward and clamp on the protective frame 2 after being fixed. At the same time, the diagonal brace 42 provided on the side wall of the card plate 4 will abut against the top of the protective frame 2, further enhancing the stability of the snap mechanism. Since the positioning plate 3 and the card plate 4 are an integrated structure, and the card plate 4 and the positioning plate 3 are elastically connected, the card plate 4 has a certain elastic deformation ability during the installation process, and can better adapt to the protective frame 2 and the capacitor body 1 of different sizes. At the same time, the abutment interfaces 41 opened at both ends of the side wall of the card plate 4 and the diagonal brace 42 set on the top enable the card plate 4 to maintain a stable abutment state when subjected to external forces, preventing the capacitor body 1 from loosening or falling off during the installation process. Since the positioning plate 3, the card plate 4 and the diagonal brace 42 are all made of metal conductive materials, the entire snap mechanism has good conductive properties. When the capacitor body 1 needs to be grounded, it can be connected to the grounding device through the snap mechanism to achieve safe and reliable grounding protection.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safe and groundable AC motor capacitor, comprising a capacitor body (1), a protective frame (2) and a snap mechanism, wherein the capacitor body (1) is arranged in the protective frame (2); characterized in that: A threaded column (11) is provided on the top of the capacitor body (1), a buckle groove (21) is provided on the protection frame (2), and the threaded column (11) passes through the buckle groove (21) and is located on the top of the protection frame (2); The snap mechanism comprises a positioning plate (3), a clamping plate (4) and an oblique support (42); the clamping plate (4) is arranged on the left and right sides of the positioning plate (3); the bottom of the clamping plate (4) passes through the clamping groove (21) and abuts against the bottom of the protective frame (2); the side wall of the clamping plate (4) is provided with the oblique support (42), and the oblique support (42) abuts against the top of the protective frame (2); the positioning plate (3) is fixedly connected to the threaded column (11); the positioning plate (3), the clamping plate (4) and the oblique support (42) are all made of metal conductive material.

2. A 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) is elastically connected to the positioning plate (3); abutment ports (41) are provided at both ends of the side wall of the card plate (4); the oblique brace (42) is provided at the top of the abutment port (41); the oblique brace (42) and the card plate (4) are an integral structure, and the oblique brace (42) is elastically connected to the card plate (4).

3. A safe groundable AC motor capacitor according to claim 1, characterized in that: Limiting plates (5) are arranged on the front and rear sides of the positioning plate (3), rectangular grooves (12) are opened on both sides of the threaded column (11), and a supporting mechanism is arranged on the side of the limiting plate (5) close to the rectangular groove (12).

4. A safe groundable AC motor capacitor according to claim 3, characterized in that: The support mechanism comprises a support plate (6), a guide rod (62) and a connecting plate (63); the support plate (6) is arranged on a side of the limiting plate (5) close to the rectangular groove (12); one end of the support plate (6) abuts against the side wall of the rectangular groove (12); 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) and the limiting plate (5) are slidably matched; 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 bottom of the support plate (6) is provided with an avoidance groove (61), and the avoidance groove (61) is arranged obliquely relative to the threaded column (11).

6. A safe groundable AC motor capacitor according to claim 1, characterized in that: The bottom of the clamping plate (4) is provided with a bending portion (7), and a side of the bending portion (7) away from the positioning plate (3) is provided with an abutment portion (71), and the abutment portion (71) 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 clamping plate (4) and the bending portion (7).

8. A safe groundable AC motor capacitor according to claim 1, characterized in that: A threaded hole (13) is provided at the top of the threaded column (11), a positioning hole (31) is provided on the positioning plate (3), 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 threadably engaged with the threaded hole (13).

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