Auxiliary mechanism and circuit breaker
By providing a combination of a pressing member and a limiting member in the circuit breaker, the problem of difficulty in controlling the spindle deformation in the prior art is solved, and effective restrictions on the spindle and reliable control of the contact mechanism are achieved.
Patent Information
- Application Number
- CN202420272527.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-02-02
AI Technical Summary
The auxiliary mechanism in the prior art cannot effectively limit the deformation of the spindle, resulting in the deformation of the spindle being easily deformed, affecting the control of the contact mechanism.
By providing a pressing member and a limiting member, the pressing member pushes the spindle to prevent its deformation, and the limiting member provides support when the pressing member pushes the spindle, preventing the pressing member from being deflected by the spindle against the backward push.
It effectively limits the deformation of the spindle, improves the control accuracy of the contact mechanism, increases the contact pressure between the moving contact and the static contact, and improves the reliability of the contact.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power distribution equipment, and in particular to an auxiliary mechanism and a circuit breaker. Background Art
[0002] The frame circuit breaker includes a circuit breaker body and an operating mechanism; wherein a contact mechanism is arranged in the circuit breaker body; the operating mechanism is installed outside the circuit breaker body, and the operating mechanism is connected to the contact mechanism in the circuit breaker body through a main shaft, so as to control the connection or disconnection of the contact mechanism through the main shaft. When the operating mechanism controls the contact mechanism through the main shaft, the main shaft is easily deformed, which affects the control of the contact mechanism.
[0003] Based on this, the prior art sets an auxiliary mechanism to limit the spindle to reduce the deformation of the spindle. However, the prior auxiliary mechanism may be pushed back by the spindle during the process of limiting the spindle, and cannot effectively limit the spindle. Utility Model Content
[0004] In view of this, an embodiment of the present application provides an auxiliary mechanism and a circuit breaker, which can effectively limit the main shaft and reduce the deformation of the main shaft.
[0005] In a first aspect, an embodiment of the present application provides an auxiliary mechanism. The auxiliary mechanism is applied to a circuit breaker, and the circuit breaker includes a circuit breaker body and a main shaft connected to each other. The auxiliary mechanism includes a mounting frame, a clamping member, and a limiting member. Among them, the mounting frame is mounted on the circuit breaker body. The clamping member is mounted on the mounting frame and abuts the main shaft; the clamping member is used to prevent the main shaft from deforming in a direction away from the circuit breaker body. The limiting member is mounted on the mounting frame and connected to the clamping member; the limiting member is used to limit the clamping member when the clamping member abuts the main shaft.
[0006] Taking into account the technical problem that the auxiliary mechanism of the prior art cannot effectively limit the main shaft, the embodiment of the present application arranges a clamping member and a limiting member so that the clamping member can push the main shaft to prevent the main shaft from deforming in the direction away from the circuit breaker body. The limiting member can provide support for the clamping member when the clamping member pushes the main shaft to prevent the clamping member from being pushed in the opposite direction by the main shaft and deviating in the direction away from the circuit breaker body, so that the clamping member can effectively push the main shaft.
[0007] In a possible design, the limiting member includes a connecting shaft and a limiting plate connected to each other; the connecting shaft is installed on the mounting frame; and the limiting plate is connected to the clamping member to limit the clamping member.
[0008] Through the above scheme, the connecting shaft can provide support for the limit plate, and the limit plate can provide support for the clamping member when the clamping member pushes the main shaft to prevent the clamping member from being pushed in the opposite direction by the main shaft and deviating in the direction away from the circuit breaker body, so that the clamping member can effectively push the main shaft.
[0009] In a possible design, a gap is provided between the connecting shaft and the main shaft, or the connecting shaft abuts against the main shaft.
[0010] When a gap is set between the connecting shaft and the main shaft, the connecting shaft can provide support for the limit plate. When the connecting shaft abuts against the main shaft, the connecting shaft can provide support for the limit plate, and can also apply force to the main shaft toward the circuit breaker body to prevent the main shaft from deforming in a direction away from the circuit breaker body, and can also apply force to the main shaft to limit the main shaft.
[0011] In a possible design, the limiting member includes a connecting plate and a limiting plate connected to each other; the connecting plate is installed on the mounting frame; and the limiting plate is connected to the clamping member to limit the clamping member.
[0012] Through the above solution, the connection plate can provide support for the limit plate, and the limit plate can provide support for the clamping member when the clamping member pushes the main shaft, so as to prevent the clamping member from being pushed in the opposite direction by the main shaft and deviating in the direction away from the circuit breaker body, so that the clamping member can effectively push the main shaft. In addition, the connection plate can also isolate the clamping member from other components inside the circuit breaker to prevent other components from affecting the abutment of the clamping member on the main shaft.
[0013] In one possible design, the pressure element is configured as a bearing.
[0014] Through the above solution, the peripheral wall of the bearing can abut against the main shaft to prevent the main shaft from deforming in the direction away from the circuit breaker body. In addition, during the process of the bearing abutting against the main shaft, the bearing and the main shaft can be rollingly matched, and the friction resistance between the bearing and the main shaft is smaller than that of the sliding match. The bearing has less influence on the rotation of the main shaft, which is conducive to the main shaft smoothly driving the contact mechanism to connect or disconnect.
[0015] In a possible design, the clamping member is configured to include a rotating shaft and a clamping ring, wherein the clamping ring is sleeved outside the rotating shaft; the rotating shaft is mounted on a mounting frame and connected to the limiting member, and the clamping ring abuts against the main shaft.
[0016] Through the above scheme, the peripheral wall of the clamping ring can abut against the main shaft to prevent the main shaft from deforming in the direction away from the circuit breaker body. In addition, during the process of the clamping ring abutting against the main shaft, the clamping ring can rotate, or the rotating shaft and the clamping ring can both rotate, and the clamping ring and the main shaft can also be rolled together. The friction resistance between the clamping ring and the main shaft is smaller than that of the sliding fit, and the clamping ring has less influence on the rotation of the main shaft, which is conducive to the main shaft to smoothly drive the contact mechanism to connect or disconnect.
[0017] In a possible design, a plurality of pressing members are provided, and the plurality of pressing members are arranged along the circumference of the main shaft.
[0018] Through the above solution, the plurality of pressing members can push the main shaft in multiple directions to prevent the main shaft from deforming in a direction away from the circuit breaker body.
[0019] In one possible design, the clamping member includes a first sub-member and a second sub-member; the angle θ between the line L1 between the rotation center of the first sub-member and the axis center of the main shaft, and the angle θ between the line L2 between the rotation center of the second sub-member and the axis center of the main shaft is configured to satisfy: 10°≤θ≤50°.
[0020] Through the above solution, the first sub-component and the second sub-component can abut the main shaft within a range of 10° to 50° from the axis of the main shaft to the peripheral wall to limit the deformation of the main shaft in a direction away from the circuit breaker body.
[0021] In a second aspect, an embodiment of the present application further provides a circuit breaker, comprising a circuit breaker body, a main shaft and the auxiliary mechanism of the first aspect; the mounting frame is installed on the circuit breaker body; the clamping member abuts against the main shaft to prevent the main shaft from deforming in a direction away from the circuit breaker body.
[0022] On the basis that the auxiliary mechanism of the first aspect can effectively limit the main shaft, when the main shaft in the circuit breaker provided by this embodiment drives the moving contact in the contact mechanism to contact the stationary contact, the contact pressure between the moving contact and the stationary contact will increase, and the contact reliability will be improved.
[0023] In one possible design, the circuit breaker is a frame circuit breaker.
[0024] The beneficial effects provided in the above-mentioned second aspect and various possible designs of the above-mentioned second aspect can refer to the beneficial effects brought about by the above-mentioned first aspect and various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 This is a schematic diagram of a circuit breaker in some embodiments of the present application.
[0027] Figure 2 This is a cross-sectional view of a circuit breaker in some embodiments of the present application.
[0028] Figure 3 This is a schematic diagram of the auxiliary mechanism in some embodiments of the present application.
[0029] Figure 4 This is a schematic diagram of the first type of limiting member in some embodiments of the present application.
[0030] Figure 5This is a schematic diagram of a second type of limiting member in some embodiments of the present application.
[0031] Figure 6 This is a schematic diagram of the first type of pressing member in some embodiments of the present application.
[0032] Figure 7 This is a schematic diagram of a second type of pressing member in some embodiments of the present application.
[0033] Figure 8 for Figure 2 Magnified view of the middle O area.
[0034] Description of reference numerals:
[0035] 1-circuit breaker; 11-circuit breaker body; 12-main shaft; 13-auxiliary mechanism; 131-mounting frame; 131a-first side plate; 131b-second side plate; 131c-connecting rod; 132-pressing member; 132a-bearing; 132b-rotating shaft; 132c-pressing ring; 1321-first sub-component; 1322-second sub-component; 133-limiting member; 133a-connecting shaft; 133b-limiting plate; 133c-connecting plate; 134-energy storage spring. DETAILED DESCRIPTION
[0036] 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.
[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.
[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0039] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the structure of the present application. For example, in the description of the present application, the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.
[0040] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0041] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0042] Frame circuit breakers are usually installed in low-voltage power distribution systems to distribute power to low-voltage electrical equipment in the power distribution system and protect low-voltage electrical equipment from abnormal conditions such as overcurrent, undervoltage or short circuit. Specifically, frame circuit breakers distribute power to low-voltage electrical equipment when closed; frame circuit breakers open when the power distribution system fails to protect low-voltage electrical equipment.
[0043] The frame circuit breaker includes an operating mechanism, a main shaft and a contact mechanism. The operating mechanism and the contact mechanism are both connected to the main shaft. When the operating mechanism is actuated, the main shaft is driven to rotate, and when the main shaft rotates, the contact mechanism is driven to connect or disconnect. The contact mechanism includes a moving contact and a stationary contact; the moving contact is connected to the main shaft so as to contact or separate from the stationary contact as the main shaft rotates. When the moving contact contacts the stationary contact, the contact mechanism is connected and the frame circuit breaker is closed. When the moving contact separates from the stationary contact, the contact mechanism is disconnected and the frame circuit breaker is opened.
[0044] In the actual application of the frame circuit breaker, the technicians in this field found that when the operating mechanism drives the main shaft to rotate, the main shaft will be deformed due to its long length, which will affect the connection or disconnection of the contact mechanism. Based on this, the technicians in this field provided an auxiliary mechanism to limit the main shaft through the auxiliary mechanism to prevent the main shaft from deforming. However, in the application of the existing auxiliary mechanism, the inventor found that the component that limits the main shaft will be pushed in the opposite direction by the main shaft and offset, resulting in the main shaft cannot be effectively limited.
[0045] Based on this, the inventors have conducted in-depth research and provided an auxiliary mechanism that uses a limiter to limit the component (clamping member) that limits the main shaft, so as to prevent the component (clamping member) that limits the main shaft from being pushed in the opposite direction by the main shaft and being offset.
[0046] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0047] The auxiliary mechanism 13 provided in the embodiment of the present application is applied to the circuit breaker 1. The circuit breaker 1 may be the aforementioned frame circuit breaker. Figure 1 and Figure 2 The circuit breaker 1 includes a circuit breaker body 11 and a main shaft 12 connected to each other. The main shaft 12 is located outside the circuit breaker body 11 and is connected to a contact mechanism inside the circuit breaker body 11. The circuit breaker 1 also includes an operating mechanism, which is connected to the main shaft 12 to drive the main shaft 12 to rotate, so that the contact mechanism is turned on or off when the main shaft 12 rotates.
[0048] See also Figures 1 to 3 The auxiliary mechanism 13 provided in the embodiment of the present application includes a mounting frame 131, a pressing member 132 and a limiting member 133. The mounting frame 131 is mounted on the circuit breaker body 11. The pressing member 132 is mounted on the mounting frame 131 and abuts against the main shaft 12; the pressing member 132 is used to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11. The limiting member 133 is mounted on the mounting frame 131 and connected to the pressing member 132; the limiting member 133 is used to limit the pressing member 132 when the pressing member 132 abuts against the main shaft 12.
[0049] like Figure 3As shown, the mounting frame 131 may include a first side plate 131a and a second side plate 131b that are arranged opposite to each other, and the first side plate 131a and the second side plate 131b are connected by one or more connecting rods 131c. The first side plate 131a and the second side plate 131b are both provided with a bending portion, and the bending portion is connected to the circuit breaker body 11, so that the mounting frame 131 is installed on the circuit breaker body 11. Among them, the first side plate 131a and the second side plate 131b can be connected to the circuit breaker body 11 in an assembly connection (for example, screw connection). In addition, the first side plate 131a and the second side plate 131b are both provided with a notch on one side close to the circuit breaker body 11 to avoid the main shaft 12.
[0050] The clamping member 132 can be installed on the first side plate 131a and / or the second side plate 131b of the mounting frame 131. Exemplarily, the clamping member 132 and the mounting frame 131 can be connected in a fixed connection (e.g., integral connection) or an assembly connection (e.g., plug-in connection), and the embodiments of the present application do not specifically limit this. The clamping member 132 can be installed at a portion of the first side plate 131a close to the notch and / or a portion of the second side plate 131b close to the notch, so as to abut against the main shaft 12. One or two clamping members 132 can be installed on one mounting frame 131.
[0051] When the pressing member 132 abuts against the main shaft 12, the pressing member 132 can apply a force to the main shaft 12 toward the circuit breaker body 11 to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11. When the main shaft 12 does not deform in a direction away from the circuit breaker body 11, the moving contact in the contact mechanism will not be pulled away from the static contact by the main shaft 12, so that the moving contact is easy to contact with the static contact, and when the moving contact and the static contact are in contact, the contact pressure between the two will increase, and the reliability of the contact will be improved. In particular, when the circuit breaker 1 carries a short-circuit current (for example, a short-time withstand current or a short-time delay current), the moving contact and the static contact will be reliably in contact and will not be repelled.
[0052] When the limiter 133 is installed on the mounting frame 131, it can be installed on the first side plate 131a and / or the second side plate 131b of the mounting frame 131. Exemplarily, the limiter 133 and the mounting frame 131 can also be connected in a fixed connection (for example, an integral connection) or an assembly connection (for example, plug-in). When the limiter 133 is connected to the clamping member 132, the limiter 133 can be connected to the end of the clamping member 132 away from the mounting frame 131, or connected between the end of the clamping member 132 away from the mounting frame 131 and the end close to the mounting frame 131. The embodiment of the present application does not specifically limit this. The number of limiters 133 can be set based on the number of clamping members 132.
[0053] When the limiting member 133 abuts against the pressing member 132 , a force toward the circuit breaker body 11 can be applied to the pressing member 132 to prevent the pressing member 132 from being pushed in the opposite direction by the main shaft 12 and deviating in a direction away from the circuit breaker body 11 , so that the pressing member 132 can effectively push the main shaft 12 .
[0054] Specifically, when the main shaft 12 is deformed in a direction away from the circuit breaker body 11, the main shaft 12 may push the pressing member 132 in the opposite direction away from the circuit breaker body 11, so that the pressing member 132 as a whole deviates from the original position or one end of the pressing member 132 deviates from the original position and cannot effectively abut the main shaft 12. Based on this, the limiting member 133 of the embodiment of the present application can apply a force toward the circuit breaker body 11 to the pressing member 132 to push the limiting member 133, prevent the pressing member 132 from deviating in a direction away from the circuit breaker body 11, and enable the pressing member 132 to effectively abut the main shaft 12.
[0055] In some embodiments, the limiting member 133 may be configured in a variety of forms. For ease of understanding, possible forms of the limiting member 133 are exemplarily described below in conjunction with the accompanying drawings.
[0056] In the first example, see Figure 4 The limiting member 133 includes a connecting shaft 133a and a limiting plate 133b connected to each other; the connecting shaft 133a is installed on the mounting frame 131; the limiting plate 133b is connected to the pressing member 132 to limit the pressing member 132.
[0057] The connecting shaft 133a may be cylindrical or polygonal, etc., and the embodiment of the present application does not specifically limit this. When the connecting shaft 133a is installed on the mounting frame 131, for example, the connecting shaft 133a may be installed on the mounting frame 131 in an integral or plug-in manner, and the embodiment of the present application does not specifically limit this.
[0058] The limiting plate 133b may be a flat plate or an arc-shaped plate, etc., and the embodiments of the present application do not specifically limit this. When the limiting plate 133b is connected to the connecting shaft 133a, it can be connected in an integral connection or plug-in manner. When the limiting plate 133b is connected to the clamping member 132, it can also be connected in an integral connection or plug-in manner; and the limiting plate 133b can be connected to the end of the clamping member 132 away from the mounting frame 131, or, connected between the end of the clamping member 132 away from the mounting frame 131 and the end close to the mounting frame 131.
[0059] In this example, the connecting shaft 133a can provide support for the limit plate 133b, and the limit plate 133b can provide support for the clamping member 132 when the clamping member 132 pushes the main shaft 12, so as to prevent the clamping member 132 from being pushed in the opposite direction by the main shaft 12 and deviating in the direction away from the circuit breaker body 11, so that the clamping member 132 can effectively push the main shaft 12.
[0060] In this example, the positional relationship between the connecting shaft 133 a and the main shaft 12 can be various.
[0061] In one possibility, the connecting shaft 133a abuts against the main shaft 12. In this way, the connecting shaft 133a can provide support for the limiting plate 133b, and can also apply force to the main shaft 12 toward the circuit breaker body 11 to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11, and can also apply force to the main shaft 12 to limit the main shaft 12.
[0062] Specifically, when the limiting plate 133 b receives the force from the pressing member 132 , the connecting shaft 133 a can apply force to the limiting plate 133 b to support the limiting plate 133 b so that the limiting plate 133 b limits the pressing member 132 .
[0063] When the connecting shaft 133 a is located at a side of the main shaft 12 away from the circuit breaker body 11 , the connecting shaft 133 a can apply a force to the main shaft 12 toward the circuit breaker body 11 , thereby blocking the main shaft 12 .
[0064] When the connecting shaft 133a is located below the main shaft 12, see Figure 1 and Figure 2 The connecting shaft 133a can apply an upward force to the main shaft 12 to prevent the main shaft 12 from moving downward under the action of gravity, thereby limiting the main shaft.
[0065] In another possibility, a gap is provided between the connecting shaft 133a and the main shaft 12. In this way, when the limiting plate 133b is subjected to the force from the pressing member 132, the connecting shaft 133a can exert force on the limiting plate 133b to support the limiting plate 133b so that the limiting plate 133b limits the pressing member 132.
[0066] In the second example, see Figure 5 The limiting member 133 includes a connecting plate 133 c and a limiting plate 133 b connected to each other; the connecting plate 133 c is installed on the mounting frame 131 ; the limiting plate 133 b is connected to the pressing member 132 to limit the pressing member 132 .
[0067] The connecting plate 133c and the limiting plate 133b can be both configured as flat plates or arc-shaped plates. When the connecting plate 133c and the limiting plate 133b are connected, they can be connected integrally or by means of components such as screws, which is not specifically limited in the present embodiment.
[0068] When the connecting plate 133c is installed on the mounting frame 131, it can be installed on the first side plate 131a and / or the second side plate 131b of the mounting frame 131 by riveting, pin connection or screw connection, which is not particularly limited in the embodiment of the present application.
[0069] The connection method of the limiting plate 133b and the pressing member 132, and the position where the limiting plate 133b is connected to the pressing member 132 can be the same as the first example mentioned above, and will not be repeated here.
[0070] In this example, the connecting plate 133c can provide support for the limiting plate 133b, and the limiting plate 133b can provide support for the clamping member 132 when the clamping member 132 pushes the main shaft 12, so as to prevent the clamping member 132 from being pushed in the opposite direction by the main shaft 12 and deviating in the direction away from the circuit breaker body 11, so that the clamping member 132 can effectively push the main shaft 12.
[0071] In addition, the connecting plate 133 c can also isolate the pressing member 132 from other components inside the circuit breaker 1 to prevent other components from affecting the abutment of the pressing member 132 against the main shaft 12 .
[0072] In some embodiments, the pressing member 132 may be configured in a variety of forms. For ease of understanding, possible forms of the pressing member 132 are exemplarily described below in conjunction with the accompanying drawings.
[0073] For some examples, see Figure 6 , the pressing member 132 is configured as a bearing 132a.
[0074] One end of the bearing 132a may be mounted on the first side plate 131a and / or the second side plate 131b of the mounting frame 131. The other end of the bearing 132a may be connected to the aforementioned limiting member 133 (specifically, may be connected to the aforementioned limiting plate 133b).
[0075] In this example, the peripheral wall of the bearing 132 a may abut against the main shaft 12 to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11 .
[0076] In addition, during the process of the bearing 132a abutting against the main shaft 12, the bearing 132a and the main shaft 12 can be rolled together, and the friction resistance between the bearing 132a and the main shaft 12 is smaller than that of the sliding fit. The bearing 132a has less influence on the rotation of the main shaft 12, which is conducive to the main shaft 12 to smoothly drive the contact mechanism to connect or disconnect.
[0077] For other examples, see Figure 7 The pressing member 132 is configured to include a rotating shaft 132 b and a pressing ring 132 c, and the pressing ring 132 c is sleeved outside the rotating shaft 132 b; the rotating shaft 132 b is installed on the mounting frame 131 and connected to the limiting member 133, and the pressing ring 132 c abuts against the main shaft 12.
[0078] The clamping ring 132c can be interference-connected on the rotating shaft 132b or can be movably sleeved on the rotating shaft 132b. Based on the different connection methods between the clamping ring 132c and the rotating shaft 132b, the connection methods between the rotating shaft 132b and the mounting bracket 131 are also different. Exemplarily, when the clamping ring 132c is interference-connected on the rotating shaft 132b, the rotating shaft 132b is rotatably mounted on the first side plate 131a and / or the second side plate 131b. When the clamping ring 132c is movably sleeved on the rotating shaft 132b, the rotating shaft 132b is fixedly mounted on the first side plate 131a and / or the second side plate 131b.
[0079] When the rotating shaft 132b is installed on the limiting member 133, it can be installed on the limiting plate 133b. The method of installing the rotating shaft 132b on the limiting plate 133b can be the same as the method of installing it on the mounting frame 131, which will not be repeated here.
[0080] In this example, the peripheral wall of the clamping ring 132 c may abut against the main shaft 12 to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11 .
[0081] In addition, during the process of the clamping ring 132c abutting against the main shaft 12, the clamping ring 132c can rotate, or the rotating shaft and the clamping ring 132c can both rotate, and the clamping ring 132c and the main shaft 12 can also be rolled together. The friction resistance between the clamping ring 132c and the main shaft 12 is smaller than that of the sliding fit, and the clamping ring 132c has less influence on the rotation of the main shaft 12, which is conducive to the main shaft 12 to smoothly drive the contact mechanism to connect or disconnect.
[0082] In some embodiments, see Figure 8 The pressing members 132 are provided in plurality, and the plurality of pressing members 132 are arranged along the circumferential direction of the main shaft 12 .
[0083] When the plurality of pressing members 132 are distributed along the circumference of the main shaft 12 , for example, two adjacent pressing members 132 may fit together, or the plurality of pressing members 132 may be arranged at intervals, and the embodiment of the present application does not impose any special limitation on this.
[0084] In this embodiment, the plurality of pressing members 132 can push the main shaft 12 in multiple directions to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11 .
[0085] In some embodiments, see Figure 8 The clamping member 132 includes a first sub-member 1321 and a second sub-member 1322; the angle θ between the line L1 between the rotation center of the first sub-member 1321 and the axis of the main shaft 12, and the angle θ between the line L2 between the rotation center of the second sub-member 1322 and the axis of the main shaft 12 are configured to satisfy: 10°≤θ≤50°.
[0086] The first sub-component 1321 and the second sub-component 1322 can abut against the side of the main shaft 12 facing away from the circuit breaker body 11 and generate a component force in the direction toward the circuit breaker body 11 to push the main shaft 12 and prevent the main shaft 12 from deforming in the direction away from the circuit breaker body 11.
[0087] There may be many positions where the first sub-component 1321 abuts against the main shaft 12 and where the second sub-component 1322 abuts against the main shaft 12. Figure 8 Taking the placement state of the circuit breaker 1 as an example, in the up and down directions, the position where the first sub-component 1321 abuts against the main shaft 12 and the position where the second sub-component 1322 abuts against the main shaft 12 can be distributed on the same side of the axis of the main shaft 12, or, the position where the first sub-component 1321 abuts against the main shaft 12 and the position where the second sub-component 1322 abuts against the main shaft 12 can be distributed on both sides of the axis of the main shaft 12, and the embodiments of the present application do not make any special limitations on this.
[0088] In addition, the angle θ between the line L1 between the rotation center of the first sub-component 1321 and the axis center of the main shaft 12, and the angle θ between the line L2 between the rotation center of the second sub-component 1322 and the axis center of the main shaft 12 can be configured to be 10°, 20°, 30°, 40° or 50°, etc., and the embodiments of the present application do not impose any special limitations on this.
[0089] In this example, the first sub-component 1321 and the second sub-component 1322 can abut the main shaft 12 within a range of 10° to 50° from the axis of the main shaft 12 to the peripheral wall to limit the deformation of the main shaft 12 in a direction away from the circuit breaker body 11 .
[0090] It should be pointed out that, based on the structure of the aforementioned pressing member 132, when the limiting member 133 includes the connecting shaft 133a and the limiting plate 133b, and the connecting shaft 133a abuts against the main shaft 12, a smaller gap can be preset between the connecting shaft 133a and the main shaft 12. In this way, when the pressing member 132 abuts against the main shaft 12, the connecting shaft 133a may not interfere with the rolling fit relationship between the pressing member 132 and the main shaft 12; when the main shaft 12 deforms greatly, the connecting shaft 133a may push against the main shaft 12 to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11.
[0091] In addition, in some embodiments, see Figure 2 and Figure 8 The connecting shaft 133a can be set on the side of the second sub-component 1322 away from the first sub-component 1321, and the angle θ1 between the line L2 between the rotation center of the second sub-component 1322 and the rotation center of the main shaft 12, and the angle θ1 between the line L3 between the axis center of the connecting shaft 133a and the axis center of the main shaft 12 are configured to satisfy: 10°≤θ1≤50°.
[0092] Combined with the positional relationship between the first sub-component 1321 and the second sub-component 1322, the first sub-component 1321, the second sub-component 1322 and the connecting shaft 133a can be spaced apart in the range of 20° to 100° from the axis of the main shaft 12 to the peripheral wall, so as to abut the main shaft 12 from three directions to prevent the main shaft 12 from deforming in a direction away from the circuit breaker body 11.
[0093] In some embodiments, see Figure 3 The auxiliary mechanism 13 also includes an energy storage spring 134, one end of the energy storage spring 134 is connected to the cantilever of the main shaft 12, and the other end of the energy storage spring 134 is connected to the connecting rod 131c of the mounting frame 131.
[0094] When the contact mechanism of the circuit breaker body 11 is connected, the energy storage spring 134 can be compressed to store energy, and the energy storage spring 134 can press the main shaft 12, so that the main shaft 12 drives the moving contact and the static contact of the contact mechanism to reliably contact.
[0095] At the moment when the contact mechanism of the circuit breaker body 11 is disconnected, the energy storage spring 134 can release energy and pull the main shaft 12, so that the main shaft 12 drives the moving contact and the static contact to separate quickly.
[0096] It should be noted that one or more auxiliary mechanisms 13 provided in the embodiment of the present application may be provided. Exemplarily, when multiple auxiliary mechanisms 13 are provided, the multiple auxiliary mechanisms 13 may be distributed at different positions of the main shaft 12 to limit the main shaft 12 from deforming in a direction away from the circuit breaker body 11 .
[0097] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. An auxiliary mechanism, applied to a circuit breaker, the circuit breaker comprising a circuit breaker body and a main shaft connected to each other, characterized in that: The auxiliary mechanism includes: A mounting frame, mounted on the circuit breaker body; A pressing member, mounted on the mounting frame and abutting against the main shaft; the pressing member is used to prevent the main shaft from deforming in a direction away from the circuit breaker body; A limiting member is installed on the mounting frame and connected to the pressing member; the limiting member is used to limit the pressing member when the pressing member abuts against the main shaft.
2. The auxiliary mechanism according to claim 1, characterized in that: The limiting member comprises a connecting shaft and a limiting plate which are connected to each other; the connecting shaft is mounted on the mounting frame; and the limiting plate is connected to the pressing member to limit the pressing member.
3. The auxiliary mechanism according to claim 2, characterized in that: The connecting shaft abuts against the main shaft; Alternatively, a gap is provided between the connecting shaft and the main shaft.
4. The auxiliary mechanism according to claim 1, characterized in that: The limiting member includes a connecting plate and a limiting plate connected to each other; the connecting plate is installed on the mounting frame; the limiting plate is connected to the pressing member to limit the pressing member.
5. The auxiliary mechanism according to claim 1, characterized in that: The pressing element is configured as a bearing.
6. The auxiliary mechanism according to claim 1, characterized in that: The clamping member is configured to include a rotating shaft and a clamping ring, wherein the clamping ring is sleeved outside the rotating shaft; the rotating shaft is mounted on the mounting frame and connected to the limiting member, and the clamping ring abuts against the main shaft.
7. The auxiliary mechanism according to claim 5 or 6, characterized in that: The plurality of pressing members are arranged in a circumferential direction of the main shaft.
8. The auxiliary mechanism according to claim 7, characterized in that: The clamping member includes a first sub-member and a second sub-member; the angle θ between the line L1 between the rotation center of the first sub-member and the axis of the main shaft, and the angle θ between the line L2 between the rotation center of the second sub-member and the axis of the main shaft is configured to satisfy: 10°≤θ≤50°.
9. A circuit breaker, characterized in that: It comprises a circuit breaker body, a main shaft and an auxiliary mechanism as claimed in any one of claims 1 to 8; the mounting frame is mounted on the circuit breaker body; the pressing member abuts against the main shaft to prevent the main shaft from deforming in a direction away from the circuit breaker body.
10. The circuit breaker according to claim 9, characterized in that The circuit breaker is a frame circuit breaker.