Breaker moving contact structure and breaker

Abstract

The application discloses a circuit breaker movable contact structure and a circuit breaker. The circuit breaker movable contact structure comprises a contact support body, movable contact pieces, contact springs and a cover. The movable contact pieces are rotatably arranged on the contact support body. There is at least one movable contact piece, and each movable contact piece corresponds to at least one contact spring. The movable contact pieces are arranged on one side of the contact support body, the cover is arranged on the other side of the contact support body, the contact springs pass through the contact support body, one end of the contact spring is in contact with or connected to the movable contact piece, and the other end of the contact spring is in contact with or connected to the cover. An adjusting structure is arranged between the cover and the contact support body, and the adjusting structure can adjust the position of the cover relative to the contact support body, so that the deformation amount of the contact spring is adjustable. The circuit breaker movable contact structure reduces the installation difficulty of the contact spring, facilitates the maintenance, repair and adjustment of the whole structure, and realizes the adjustable contact final pressure.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, and more specifically, to a circuit breaker moving contact structure and a circuit breaker. Background Technology

[0002] Currently, in universal circuit breakers, the moving contact structure mainly includes a contact support, a moving contact piece rotatably mounted on the contact support, and a contact spring connecting the moving contact piece and the contact support.

[0003] In the above-mentioned moving contact structure, the final compression of the contact spring cannot be adjusted, which makes it impossible to adjust the final contact pressure, resulting in poor breaking capacity of the circuit breaker.

[0004] During installation, the contact spring must first be placed on the contact support. Then, the moving contact pieces are installed one by one, so that one end of the contact spring abuts against the contact support and the other end of the contact spring abuts against the moving contact piece. Finally, the moving contact piece is pressed down and installed on the contact support through the connecting component. Because the moving contact piece can rotate, this installation method is quite difficult.

[0005] The aforementioned moving contact structure is prone to contact spring misalignment during installation, which can lead to contact spring failure and ultimately, the failure of the entire circuit breaker. Furthermore, improper installation of the contact spring during installation can easily damage the moving contact and reduce the overall service life of the circuit breaker.

[0006] In summary, how to design the moving contact structure to simplify installation and make the final contact pressure adjustable is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, an object of the present invention is to provide a circuit breaker moving contact structure to simplify installation and make the final contact pressure adjustable. Another object of the present invention is to provide a circuit breaker including the above-described circuit breaker moving contact structure.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A circuit breaker moving contact structure, comprising:

[0010] Contact support, moving contact plate, contact spring, and housing;

[0011] The movable contact piece is rotatably disposed on the contact support body;

[0012] There is at least one movable contact piece, and each movable contact piece corresponds to at least one contact spring;

[0013] The movable contact piece is located on one side of the contact support body, the cover is located on the other side of the contact support body, the contact spring passes through the contact support body, one end of the contact spring contacts or is connected to the movable contact piece, and the other end of the contact spring contacts or is connected to the cover body;

[0014] An adjustment structure is provided between the cover and the contact support, which can adjust the position of the cover relative to the contact support so that the deformation of the contact spring is adjustable.

[0015] Optionally, the adjustment structure includes a threaded screw and a nut, wherein the screw passes through the contact support and the cover, and the position of the cover relative to the contact support is adjustable in the axial direction of the screw so that the deformation of the contact spring is adjustable.

[0016] Optionally, there are at least two screws, located at both ends of the contact support in the direction of the rotation axis of the moving contact piece.

[0017] Optionally, the cover is provided with a guide positioning groove, which corresponds one-to-one with the contact spring. One end of the contact spring is positioned and engaged with the guide positioning groove, and the guide positioning groove guides the contact spring along the axial direction of the contact spring.

[0018] Optionally, any two adjacent guide positioning slots are not connected at their slot sidewalls.

[0019] Optionally, the cover includes: a cover plate, and a guide positioning sleeve fixed to the cover plate; wherein the inner cavity of the guide positioning sleeve forms the guide positioning groove, and the guide positioning sleeve and the guide positioning groove correspond one-to-one.

[0020] Optionally, the cover plate and the guide positioning sleeve are an integral structure.

[0021] Optionally, the contact support body is provided with a first positioning hole, the first positioning hole for the contact spring to pass through the contact support body, and the first positioning hole corresponds one-to-one with the contact spring and is positioned and engaged.

[0022] Optionally, any two adjacent first positioning holes are not connected at their hole walls.

[0023] Optionally, the contact support includes: a contact support, two support side plates, and a mounting shaft;

[0024] One of the supporting side plates is fixed to one side of the contact support, and the other supporting side plate is fixed to the other side of the contact support;

[0025] One end of the mounting shaft is fixed to one of the supporting side plates, and the other end of the mounting shaft is fixed to another supporting side plate;

[0026] The movable contact piece is rotatably disposed on the mounting shaft, and the movable contact piece is located between the two supporting side plates;

[0027] The adjustment structure is disposed between the cover and the contact support, and the adjustment structure can adjust the position of the cover relative to the contact support so that the deformation of the contact spring is adjustable.

[0028] Optionally, the circuit breaker moving contact structure further includes a moving contact cover, which covers the moving contact piece on the side away from the contact spring, and the moving contact cover is fixedly connected to the support side plate.

[0029] Optionally, the moving contact cover includes: a moving contact cover horizontal plate, and moving contact cover side plates fixed to both ends of the moving contact cover horizontal plate; wherein the moving contact cover side plates and the supporting side plates are fixedly connected, the moving contact cover side plates are provided with a second positioning hole, and the mounting shaft protrudes from the end of the supporting side plate and is positioned and engaged with the second positioning hole.

[0030] Based on the circuit breaker moving contact structure provided above, the present invention also provides a circuit breaker including a moving contact structure, wherein the moving contact structure is any of the circuit breaker moving contact structures described above.

[0031] The circuit breaker moving contact structure provided by this invention utilizes a housing and a moving contact plate to mount the contact spring. Compared to existing technologies, this effectively reduces the installation difficulty of the contact spring and facilitates the maintenance, repair, and adjustment of the entire structure. Furthermore, by adjusting the position of the housing relative to the contact support, the deformation of the contact spring can be adjusted, i.e., the final compression of the contact spring can be controlled. This adjusts the pressure of the contact spring on the moving contact plate, achieving adjustable final contact pressure. Therefore, the aforementioned circuit breaker moving contact structure reduces installation difficulty and achieves adjustable final contact pressure. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 An exploded view of the moving contact structure of a circuit breaker provided in an embodiment of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the structure shown from another direction;

[0035] Figure 3 This is a schematic diagram of the moving contact structure of a circuit breaker provided in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the casing in the moving contact structure of the circuit breaker provided in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the contact support structure in the moving contact structure of the circuit breaker provided in an embodiment of the present invention.

[0038] Figures 1-5 middle:

[0039] 1 is the contact support body, 2 is the moving contact piece, 3 is the contact spring, 4 is the cover, 5 is the screw, 6 is the nut, 7 is the moving contact cover, 8 is the first fastener, and 9 is the second fastener.

[0040] 11 is a contact support, 12 is a support side plate, 13 is a mounting shaft, 14 is a first positioning hole, and 15 is a first fixing hole;

[0041] 41 is the cover plate, 42 is the guide positioning sleeve, 43 is the guide positioning groove, and 44 is the second fixing hole;

[0042] 71 is the horizontal plate of the moving contact cover, 72 is the side plate of the moving contact cover, 73 is the second positioning hole, and 74 is the third fixing hole. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In existing circuit breakers, one end of the contact spring abuts against the contact support, and the other end abuts against the moving contact piece. The contact spring is rotatably mounted on the contact support. Therefore, the final compression of the contact spring cannot be adjusted. It can be understood that the final compression of the contact spring refers to the compression when the moving contact piece rotates to its maximum angle away from the contact spring.

[0045] To address the aforementioned problems, embodiments of the present invention provide a circuit breaker moving contact structure. For example... Figures 1-3 As shown, the moving contact structure of the circuit breaker includes: a contact support 1, a moving contact piece 2, a contact spring 3, and a cover 4.

[0046] The aforementioned moving contact piece 2 is rotatably disposed on the contact support body 1. It can be understood that the rotation axis of the moving contact piece 2 is perpendicular to the moving contact piece 2; or the rotation axis of the moving contact piece 2 is approximately perpendicular to the moving contact piece 2, for example, the angle between the rotation axis of the moving contact piece 2 and the moving contact piece 2 is less than 90° and greater than 85°.

[0047] At least one movable contact piece 2 is provided, and each movable contact piece 2 corresponds to at least one contact spring 3. In some embodiments, there are multiple movable contact pieces 2, which are sequentially distributed along the rotation axis of the movable contact pieces 2.

[0048] The aforementioned moving contact piece 2 is located on one side of the contact support body 1, the cover 4 is located on the other side of the contact support body 1, the contact spring 3 passes through the contact support body 1, one end of the contact spring 3 is in contact with or connected to the moving contact piece 2, and the other end of the contact spring 3 is in contact with or connected to the cover 4.

[0049] In some embodiments, the contact springs 3 are arranged in two rows, with any two contact springs 3 in each row distributed sequentially along the distribution direction of the moving contact piece 2. The two rows of contact springs 3 are distributed sequentially along the height direction of the contact support 1, which may be perpendicular to the distribution direction of the moving contact piece 2. In this case, each moving contact piece 2 corresponds to two contact springs 3.

[0050] In other embodiments, the contact springs 3 may be arranged in at least three rows, that is, each moving contact piece 2 corresponds to three contact springs 3; or, the contact springs 3 may be arranged in one row, with the moving contact piece 2 and the contact spring 3 corresponding one-to-one.

[0051] An adjustment structure is provided between the cover 4 and the contact support 1. This adjustment structure can adjust the position of the cover 4 relative to the contact support 1 so that the deformation of the contact spring 3 is adjustable. It can be understood that when the contact spring 3 is in a compressed state, the adjustable deformation of the contact spring 3 means that the adjustable compression of the contact spring 3 is equivalent to the adjustable compression of the contact spring 3.

[0052] In the circuit breaker moving contact structure provided in the above embodiment, the contact spring 3 is installed using the housing 4 and the moving contact piece 2. Compared with the prior art, this effectively reduces the installation difficulty of the contact spring 3 and facilitates the maintenance, repair and adjustment of the entire structure. Moreover, the deformation of the contact spring is adjusted by adjusting the position of the housing 4 relative to the contact support 1, that is, adjusting the final compression of the contact spring 3. This adjusts the pressure of the contact spring 3 on the moving contact piece 2, thus realizing adjustable final contact pressure.

[0053] It should be noted that the final compression of the contact spring 3 refers to the compression of the contact spring 3 when the moving contact piece 2 rotates to its maximum angle in the direction away from the contact spring 3.

[0054] In the circuit breaker moving contact structure provided in the above embodiment, during installation, the cover 4 compresses the contact spring 3 towards the contact support 1, which effectively reduces the probability of the contact spring 3 not being installed properly, reduces the probability of the circuit breaker moving contact structure being damaged, and improves the service life of the entire circuit breaker.

[0055] In some embodiments, to facilitate the adjustment of the position of the housing 4 relative to the contact support 1 so that the deformation of the contact spring 3 is adjustable, the adjustment structure includes a threaded screw 5 and a nut 6; wherein the screw 5 passes through the contact support 1 and the housing 4, and the position of the housing 4 relative to the contact support 1 is adjustable in the axial direction of the screw 5 so that the deformation of the contact spring 3 is adjustable. In this case, the housing 4 and the contact support 1 are detachably fixedly connected by the screw 5 and the nut 6.

[0056] It is understandable that the axis of screw 5 is aligned with the axis of contact spring 3, meaning one end of screw 5 is close to one end of contact spring 3, and the other end of screw 5 is close to the other end of contact spring 3. During the rotation of the moving contact piece 2, the axis of contact spring 3 changes. When the moving contact piece 2 rotates to its limit position towards the side closer to the cover 4, the axis of screw 5 can be chosen to be parallel or approximately parallel to the axis of contact spring 3. Approximate parallelism between the axis of screw 5 and the axis of contact spring 3 can be understood as the angle between their axes being close to zero. When the moving contact piece 2 rotates to its limit position away from the cover 4, there is an angle between the axis of screw 5 and the axis of contact spring 3, and this angle is acute.

[0057] Specifically, the contact support 1 is provided with a first fixing hole 15 for the screw 5 to pass through, and the cover 4 is provided with a second fixing hole 44 for the screw 5 to pass through. The nut 6 can be located on the side of the second fixing hole 44 away from the contact support 1. To improve aesthetics, the second fixing hole 44 can be a countersunk hole, and the nut 6 is located in the larger hole of the countersunk hole. For ease of installation, the larger hole of the countersunk hole can be open, for example, the larger hole of the countersunk hole has a U-shaped structure, but this embodiment does not limit this.

[0058] In the above structure, by loosening the nut 6, the position of the cover 4 relative to the contact support 1 can be adjusted axially along the screw 5, thereby adjusting the deformation of the contact spring 3, i.e., adjusting the final contact pressure. This simplifies the adjustment, achieves stepless adjustment, and improves the adjustment accuracy.

[0059] The number of screws 5 can be selected according to actual needs. To improve stability, at least two screws 5 can be selected, located at both ends of the contact support 1 along the rotation axis of the moving contact piece 2. This can be understood as: along the rotation axis of the moving contact piece 2, at least one screw 5 is located at one end of the contact support 1, and at least one screw 5 is located at the other end of the contact support 1. This improves the connection stability between the cover 4 and the contact support 1; simultaneously, the cover 4 can be moved more smoothly, resulting in a more uniform deformation of all springs and improving the adjustment effect of the final contact pressure.

[0060] In practical applications, one screw (5) can be selected instead of the above-described structure.

[0061] In practical applications, the adjustment structure can also be other structures. For example, the adjustment structure includes: a fixing position provided on the contact support 1 for fixing the cover 4, and a fixing component that detachably fixes the contact support 1 and the cover 4 at the fixing position; wherein there are at least two fixing positions, the cover 4 is fixed at different fixing positions, and the deformation of the contact spring 3 is different when the position of the cover 4 relative to the contact support 1 is different.

[0062] In some embodiments, for ease of installation, such as Figure 4 As shown, the cover 4 is provided with a guide positioning groove 43, which corresponds one-to-one with the contact spring 3. One end of the contact spring 3 is positioned and engaged with the guide positioning groove 43, and the guide positioning groove 43 guides the contact spring 3 along the axial direction of the contact spring 3.

[0063] It is understandable that the distribution of the guide positioning groove 43 is consistent with the distribution of the contact spring 3. Since the axial direction of the contact spring 3 changes during the rotation of the moving contact piece 2, in order to ensure the guidance and positioning of the guide positioning groove 43, there is space between the guide positioning groove 43 and the contact spring 3 for the axial direction of the contact spring 3 to change.

[0064] In the above structure, the guide positioning groove 43 guides and limits one end of the contact spring 3, reducing the probability of misalignment of the contact spring 3 during installation and skew during compression, greatly reducing the installation difficulty of the moving contact spring 3, simplifying installation, and facilitating maintenance and repair.

[0065] In practical applications, given sufficient space, the greater the depth of the guide positioning groove 43, the better the guiding and positioning effect. The depth of the guide positioning groove 43 is set according to actual needs, and this embodiment does not impose any limitations on it.

[0066] The shape of the guide positioning groove 43 can be selected according to actual needs, such as a square groove or a circular groove. In order to reduce the volume of the cover 4 and to ensure that there is space between the guide positioning groove 43 and the contact spring 3 for the contact spring 3 to change axially, the guide positioning groove 43 can be selected as a square groove.

[0067] Two adjacent guide positioning grooves 43 may or may not be connected at their groove sidewalls. In some embodiments, any two adjacent guide positioning grooves 43 are not connected at their groove sidewalls, that is, any two adjacent guide positioning grooves 43 are completely separated by their groove sidewalls. In this way, any two guide positioning grooves 43 are relatively independent, reducing the swaying of the contact spring 3 within the guide positioning groove 43, thereby improving the guiding positioning effect and guiding positioning accuracy.

[0068] To facilitate the setting of guide positioning groove 43, such as Figure 4 As shown, the cover 4 includes: a cover plate 41 and a guide positioning sleeve 42 fixed on the cover plate 41; wherein, the inner cavity of the guide positioning sleeve 42 forms a guide positioning groove 43, and the guide positioning sleeve 42 and the guide positioning groove 43 correspond one-to-one.

[0069] In practical applications, a groove can also be directly formed on the cover plate 41, which serves as the guide positioning groove 43. This requires the cover plate 41 to be relatively thick to meet the depth requirements of the guide positioning groove 41.

[0070] In the aforementioned housing 4, the housing plate 41 and the guide positioning sleeve 42 can be either an integral structure or a separate structure. To simplify installation and facilitate production, the housing plate 41 and the guide positioning sleeve 42 can be selected as an integral structure.

[0071] If the cover 4 is fixedly connected to the contact support 1 by screws 5 and nuts 6, then the second fixing hole 44 of the cover 4 is located on the cover plate 41.

[0072] In some embodiments, for ease of installation, such as Figure 5 As shown, the contact support 1 is provided with a first positioning hole 14, which allows the contact spring 3 to pass through the contact support 1, and the first positioning hole 14 corresponds one-to-one with the contact spring 3 and is positioned and engaged.

[0073] It is understandable that the distribution of the first positioning holes 14 is consistent with the distribution of the contact springs 3, and the guide positioning grooves 43 correspond one-to-one with the first positioning holes 14. Since the axial direction of the contact springs 3 changes during the rotation of the moving contact piece 2, in order to ensure the positioning of the first positioning holes 14, there is space between the first positioning holes 14 and the contact springs 3 for the axial direction of the contact springs 3 to change.

[0074] In the above structure, the contact spring 3 is positioned by the first positioning hole 14, which is beneficial to the accurate positioning of the contact spring 3 during the installation process and effectively reduces the probability of the contact spring 3 being skewed due to uneven force during compression, thus facilitating and simplifying the installation.

[0075] In the above structure, the first positioning hole 14 and the guide positioning groove 43 can be selected at the same time. In this way, dual positioning of the contact spring 3 can be achieved, which further reduces the probability of the contact spring 3 being skewed due to uneven force during compression.

[0076] For ease of installation, when the moving contact piece 2 is rotated to its limit position towards the side closer to the cover 4, the guide positioning groove 43 is concentric with the first positioning hole 14, that is, the axis of the guide positioning groove 43 in the depth direction is collinear with the axis of the first positioning hole 14 in the depth direction. In this case, when the moving contact piece 2 is rotated to its limit position towards the side closer to the cover 4, the axis of the screw 5 is parallel to the axis of the contact spring 3.

[0077] In practical applications, given sufficient space, the greater the depth of the first positioning hole 14, the better the positioning effect. The depth of the first positioning hole 14 is set according to actual needs, and this embodiment does not impose any limitations on it.

[0078] The shape of the first positioning hole 14 can be selected according to actual needs, such as a square groove or a circular groove. In order to reduce the volume of the contact support 1 and to ensure that there is space between the first positioning hole 14 and the contact spring 3 for the contact spring 3 to change axially, the first positioning hole 14 can be selected as a square groove.

[0079] Two adjacent first positioning holes 14 may or may not be connected at the hole walls. To improve the positioning effect, any two adjacent first positioning holes 14 are not connected at their hole walls, that is, any two adjacent first positioning holes 14 are completely separated by the hole walls. In this way, any two first positioning holes 14 are relatively independent, reducing the wobbling of the contact spring 3 within the first positioning hole 14, thereby improving the positioning effect.

[0080] In the above-described circuit breaker moving contact structure, the specific structure of the contact support 1 is selected according to actual needs. For ease of installation, such as... Figure 1-3As shown, the contact support 1 includes: a contact support 11, two support side plates 12, and a mounting shaft 13; wherein, one support side plate 12 is fixed to one side of the contact support 11, and the other support side plate 12 is fixed to the other side of the contact support 11; one end of the mounting shaft 13 is fixed to one support side plate 12, and the other end of the mounting shaft 13 is fixed to the other support side plate 12; the movable contact piece 2 is rotatably disposed on the mounting shaft 13, and the movable contact piece 2 is located between the two support side plates 13. Specifically, the movable contact piece 2 is provided with a mounting hole, the mounting shaft 13 passes through the mounting hole, and the mounting shaft 13 and the mounting hole are rotatably engaged.

[0081] The aforementioned circuit breaker moving contact structure forms a contact support body 1 through a contact support 11, a support side plate 12, and a mounting shaft 13, which improves the structural reliability and stability. At the same time, the contact support 11 and the two support side plates 12 partially surround the contact spring 3, which protects the contact spring 3 and reduces the damage to the contact spring 3 caused by high-temperature electric arcs or metal particles.

[0082] In the above structure, the first fixing hole 14 of the contact support 1 is located on the contact support 1.

[0083] In the above structure, the adjustment structure is disposed between the cover 4 and the contact support 1. The adjustment structure can adjust the position of the cover 4 relative to the contact support 1 so that the deformation of the contact spring 3 is adjustable.

[0084] To protect the moving contact piece 2, the circuit breaker moving contact structure also includes a moving contact cover 7. This cover 7 is positioned on the side of the moving contact piece 2 furthest from the contact spring 3, and is fixedly connected to the support side plate 12. In this way, the moving contact cover 7 partially surrounds the contact spring 3, thus protecting it and reducing the risk of damage from high-temperature arcs or metal particles.

[0085] For ease of installation and maintenance, the moving contact cover 7 and the support side plate 12 can be detachably and fixedly connected, and the support side plate 12 and the contact support 1 can be detachably and fixedly connected. Specifically, the moving contact cover 7 and the support side plate 12 are detachably and fixedly connected by fasteners, and the support side plate 12 and the contact support 1 are detachably and fixedly connected by fasteners.

[0086] like Figure 3 As shown, the support side plate 12 and the contact support 1 are detachably fixedly connected by the first fastener 8 and the second fastener 9, and the moving contact cover 7 and the support side plate 12 are detachably fixedly connected by the first fastener 8. In this way, the first fastener 8 that fixes the support side plate 12 and the contact support 1 also fixes the moving contact cover 7 and the support side plate 12. The moving contact cover 7, the support side plate 12, and the contact support 1 are fixedly connected by the first fastener 8, which effectively reduces the number of fasteners and simplifies the installation.

[0087] In some embodiments, to simplify installation, the moving contact cover 7 includes: a moving contact cover horizontal plate 71, and moving contact cover side plates 72 fixed to both ends of the moving contact cover horizontal plate 71; wherein, the moving contact cover side plates 72 and the supporting side plate 12 are fixedly connected, and the moving contact cover side plates 72 are provided with second positioning holes 73, and the mounting shaft 13 protrudes from the end of the supporting side plate 12 and is positioned and engaged with the second positioning hole 72. It can be understood that the moving contact cover side plates 72 are located on the side of the supporting side plate 12 away from the moving contact piece 2.

[0088] In the above embodiments, the installation of the moving contact cover 7 is facilitated by the positioning and engagement of the mounting shaft 13 and the second positioning hole 72, thereby simplifying the installation of the entire structure.

[0089] In practical applications, the moving contact cover horizontal plate 71 and the moving contact cover side plate 72 can be an integral structure or a separate structure. To simplify installation, the moving contact cover horizontal plate 71 and the moving contact cover side plate 72 can be selected as an integral structure.

[0090] The installation method of the circuit breaker moving contact structure provided in the above embodiments is as follows:

[0091] Pass the mounting shaft 13 through the mounting holes of all the moving contact pieces 2 in sequence; then place the mounting shaft 13 with the moving contact pieces 2 in the corresponding position of the contact support 11; align the shaft hole of one support side plate 12 with the mounting shaft 13 and insert it into the corresponding position of the contact support 11, fix the support side plate 12 and the contact support 11, and ensure that it is installed in place; perform the same assembly action on the other support side plate 12; cover the moving contact piece 2 with the moving contact piece 2 away from the contact spring 3, and place the moving contact cover side plate 72 of the moving contact cover 7 in the corresponding position on the side of the support side plate 12 away from the moving contact piece 2, fix the moving contact cover side plate 72 and the support side plate 12, and ensure that it is installed in place;

[0092] Several contact springs 3 are passed through the first positioning hole 14 on the contact support 11. The cover 4 compresses the contact springs 3 to an appropriate position in the direction closer to the contact support 11, ensuring that the guide positioning groove 43 on the cover 4 is concentric and corresponds one-to-one with the first positioning hole 14 on the contact support 11. The screw 5 is passed through the first fixing hole 15 on the contact support 11 and the second fixing hole 44 on the cover 4. The nut 6 is tightened to an appropriate position to fix the cover 4 and the contact support 11.

[0093] The circuit breaker moving contact structure provided in the above embodiments simplifies the installation of the entire structure, enables faster assembly and facilitates installation and maintenance, and correspondingly saves labor; at the same time, it can flexibly adjust the final contact pressure, which can improve the breaking capacity of the circuit breaker to a certain extent.

[0094] Based on the circuit breaker moving contact structure provided in the above embodiments, this embodiment also provides a circuit breaker, which includes a moving contact structure, and the moving contact structure is the circuit breaker moving contact structure described in the above embodiments.

[0095] Since the circuit breaker moving contact structure provided in the above embodiments has the above-mentioned technical effects, and the circuit breaker provided in the above embodiments includes the above-mentioned moving contact structure, the circuit breaker provided in the above embodiments also has the corresponding technical effects, which will not be repeated here.

[0096] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit breaker moving contact structure, characterized in that, include: Contact support, moving contact plate, contact spring, and housing; The movable contact piece is rotatably disposed on the contact support body; There is at least one movable contact piece, and each movable contact piece corresponds to at least one contact spring; The movable contact piece is located on one side of the contact support body, the cover is located on the other side of the contact support body, the contact spring passes through the contact support body, one end of the contact spring contacts or is connected to the movable contact piece, and the other end of the contact spring contacts or is connected to the cover body; An adjustment structure is provided between the cover and the contact support, the adjustment structure being able to adjust the position of the cover relative to the contact support so that the deformation of the contact spring is adjustable; The adjustment structure includes a threaded screw and a nut, wherein the screw passes through the contact support and the cover, and the position of the cover relative to the contact support is adjustable in the axial direction of the screw so that the deformation of the contact spring is adjustable; The cover is provided with guide positioning grooves, which correspond one-to-one with the contact springs. One end of the contact spring is positioned and engaged with the guide positioning groove, and the guide positioning groove guides the contact spring along the axial direction of the contact spring.

2. The circuit breaker moving contact structure according to claim 1, characterized in that, There are at least two screws, located at both ends of the contact support body in the direction of the rotation axis of the moving contact piece.

3. The circuit breaker moving contact structure according to claim 1, characterized in that, Any two adjacent guide positioning slots are not connected at their slot sidewalls.

4. The circuit breaker moving contact structure according to claim 3, characterized in that, The cover includes: a cover plate, and a guide positioning sleeve fixed to the cover plate; wherein the inner cavity of the guide positioning sleeve forms the guide positioning groove, and the guide positioning sleeve and the guide positioning groove correspond one-to-one.

5. The circuit breaker moving contact structure according to claim 4, characterized in that, The cover plate and the guide positioning sleeve are an integral structure.

6. The circuit breaker moving contact structure according to claim 1, characterized in that, The contact support is provided with a first positioning hole, through which the contact spring passes, and the first positioning hole corresponds one-to-one with the contact spring and is positioned and engaged.

7. The circuit breaker moving contact structure according to claim 6, characterized in that, Any two adjacent first positioning holes are not connected at their hole walls.

8. The circuit breaker moving contact structure according to any one of claims 1-7, characterized in that, The contact support includes: a contact support, two support side plates, and a mounting shaft; One of the supporting side plates is fixed to one side of the contact support, and the other supporting side plate is fixed to the other side of the contact support; One end of the mounting shaft is fixed to one of the supporting side plates, and the other end of the mounting shaft is fixed to another supporting side plate; The movable contact piece is rotatably disposed on the mounting shaft, and the movable contact piece is located between the two supporting side plates; The adjustment structure is disposed between the cover and the contact support, and the adjustment structure can adjust the position of the cover relative to the contact support so that the deformation of the contact spring is adjustable.

9. The circuit breaker moving contact structure according to claim 8, characterized in that, It also includes a moving contact cover, which covers the moving contact piece on the side away from the contact spring, and the moving contact cover and the support side plate are fixedly connected.

10. The circuit breaker moving contact structure according to claim 9, characterized in that, The moving contact cover includes: a moving contact cover horizontal plate, and moving contact cover side plates fixed to both ends of the moving contact cover horizontal plate; wherein, the moving contact cover side plates and the supporting side plates are fixedly connected, the moving contact cover side plates are provided with a second positioning hole, and the mounting shaft protrudes from the end of the supporting side plate and is positioned and engaged with the second positioning hole.

11. A circuit breaker, comprising a moving contact structure, characterized in that, The moving contact structure is the circuit breaker moving contact structure as described in any one of claims 1-10.

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