A mounting structure and circuit breaker

Abstract

The application belongs to the technical field of electric equipment, and discloses a mounting structure and a circuit breaker. The mounting structure comprises a base plate, a fixing shaft, a cover plate and an elastic member. The base plate is used for supporting an electrical accessory. The first end of the fixing shaft is fixed to the base plate. The cover plate is located above the electrical accessory. The second end of the fixing shaft penetrates the cover plate. The elastic member is arranged at the second end of the fixing shaft penetrating the cover plate. The elastic member is used for providing a force for pressing the cover plate, so that the cover plate presses the electrical accessory on the base plate. The circuit breaker comprises the mounting structure, a body and an operating mechanism. The base plate is fixed to the body. The operating mechanism is arranged on the body. The electrical accessory is used for driving the operating mechanism to close or open. The mounting structure and the circuit breaker can realize quick disassembly and assembly of the electrical accessory, avoid excessive extrusion of the electrical accessory, and ensure reliable fixation of the electrical accessory.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to an installation structure and a circuit breaker. Background Technology

[0002] Universal circuit breakers include electrical accessories such as shunt trip units and closing electromagnets. The shunt trip unit is used to open the circuit breaker, and the closing electromagnet is used to close the circuit breaker. When the circuit breaker needs to be opened or closed, the electrical accessories perform an action to trigger the closing or opening trigger of the operating mechanism, causing the operating mechanism to perform the opening or closing action.

[0003] In the existing technology, the common installation method for electrical accessories refers to Figure 1 As shown, base plate 1' is fixed to the circuit breaker body. Base plate 1' has a fixing shaft 2'. Electrical accessory 5' is supported on base plate 1'. A cover plate 3' is installed above the fixing shaft 2' and secured with bolts, causing the cover plate 3' to press the electrical accessory 5' against base plate 1', thus fixing the electrical accessory 5'. However, this fixing method requires frequent tightening of screws 4' during the replacement of electrical accessory 5', which is inconvenient. Furthermore, the force applied to manually tightening screws 4 is uncontrollable. If screws 4 are tightened too much, they will excessively compress electrical accessory 5', potentially causing it to fail. If screws 4 are tightened too loosely, they will not effectively fix electrical accessory 5', leading to movement or even detachment of the electrical accessory 5. Summary of the Invention

[0004] The purpose of this invention is to provide an installation structure that enables the rapid assembly and disassembly of electrical accessories, avoids excessive compression of electrical accessories, and ensures reliable fixation of electrical accessories.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An installation structure, comprising:

[0007] The substrate is used to support electrical accessories;

[0008] A fixed shaft, the first end of which is fixed to the substrate;

[0009] A cover plate is located above the electrical accessory, and the second end of the fixed shaft passes through the cover plate;

[0010] An elastic element is provided at the second end of the fixed shaft passing through the cover plate. The elastic element is used to provide a force that presses against the cover plate so that the cover plate presses the electrical accessory against the substrate.

[0011] Preferably, the outer peripheral wall of the second end of the fixed shaft is provided with a groove, the elastic element is provided with an insertion groove, the groove is located on the side of the cover plate away from the base plate, and the elastic element is inserted into the groove through the insertion groove.

[0012] Preferably, the number of slots is arranged at intervals along the axial direction of the fixed shaft.

[0013] Preferably, the elastic element includes a base and at least two elastic arms, the elastic arms are disposed on the base, the elastic arms extend obliquely toward one side of the cover plate, the extended end of the elastic arm is provided with an abutment for abutting against the cover plate, and two adjacent elastic arms together with the base form the insertion groove.

[0014] Preferably, the elastic element further includes a positioning protrusion disposed on the base, and the upper end face of the cover plate is provided with a corresponding positioning recess. The positioning protrusion is used to engage with the positioning recess when the insertion slot is inserted into the groove.

[0015] Preferably, the fixed shaft includes a first shaft portion and a second shaft portion arranged in a stepped manner from the first end to the second end, the shaft diameter of the second shaft portion is smaller than the shaft diameter of the first shaft portion, and a limiting stage is formed between the first shaft portion and the second shaft portion;

[0016] The cover plate is provided with a sleeve on the side facing the fixed shaft. The sleeve has a through hole extending to the upper surface of the cover plate. The second shaft passes through the through hole and is connected to the elastic element. The end of the sleeve away from the cover plate is used to abut against the limiting platform.

[0017] Preferably, the second shaft portion is configured as a non-circular column, and the perforation is a non-circular hole that is adapted to the shape of the second shaft portion.

[0018] Preferably, the cover plate has a positioning hole, and the upper end face of the electrical accessory is provided with a positioning protrusion, and the positioning hole is used for the positioning protrusion to be inserted.

[0019] Preferably, the elastic element further includes a positioning plug disposed on the base, and a corresponding positioning notch is provided on the cover plate, the positioning plug being used to insert into the positioning notch.

[0020] The present invention also provides a circuit breaker including the above-described mounting structure, which enables quick assembly and disassembly of electrical accessories, avoids excessive compression of electrical accessories, and ensures reliable fixation of electrical accessories.

[0021] A circuit breaker, comprising the mounting structure described in any one of the preceding claims, further comprising:

[0022] Electrical accessories;

[0023] The main body, wherein the substrate is fixed on the main body;

[0024] An operating mechanism is located on the main body, and the electrical accessories are used to drive the operating mechanism to close or open the circuit.

[0025] Beneficial effects:

[0026] The mounting structure provided by this invention supports the electrical accessory on a base plate. A cover plate passes through the second end of a fixed shaft, and then an elastic element is installed at the point where the second end of the fixed shaft passes through the cover plate. The elastic element provides an elastic force that presses against the cover plate, causing the cover plate to press the electrical accessory against the base plate, thus fixing the electrical accessory. Applying a pressing force through the elastic element facilitates quick assembly and disassembly of the electrical accessory. Compared to the fixing force applied by traditional screws, the elastic force applied by the elastic element avoids excessive compression of the electrical accessory while ensuring reliable fixation. Furthermore, the elastic force of the elastic element can be adjusted according to the degree of deformation, adapting to variations in the size of the electrical accessory within a certain range, ensuring applicability and compatibility.

[0027] The circuit breaker provided by the present invention includes the above-mentioned mounting structure, which enables the quick assembly and disassembly of electrical accessories, avoids excessive compression of electrical accessories, and ensures reliable fixation of electrical accessories. Attached Figure Description

[0028] Figure 1 This is an exploded view of the installation structure provided by existing technology;

[0029] Figure 2 This is a schematic diagram of the installation structure provided by the present invention;

[0030] Figure 3 This is an exploded view of the installation structure provided by the present invention;

[0031] Figure 4 This is a schematic diagram of the fixed shaft provided by the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the cover plate provided by the present invention;

[0033] Figure 6 This is a schematic diagram of the elastic element provided by the present invention from one perspective;

[0034] Figure 7 This is a structural schematic diagram of the elastic element provided by the present invention from another perspective;

[0035] Figure 8 This is a structural schematic diagram of the electrical accessory provided by the present invention;

[0036] Figure 9 This is a partial structural schematic diagram of the circuit breaker provided by the present invention.

[0037] In the picture:

[0038] 1' Base plate; 2' Fixed shaft; 3' Cover plate; 4' Screws; 5' Electrical accessories;

[0039] 1. Substrate; 11. Mounting holes; 12. Assembly slots;

[0040] 2. Fixed shaft; 21. Insert groove; 221. First shaft section; 222. Second shaft section; 223. Limiting platform; 23. Mounting head;

[0041] 3. Cover plate; 301. Perforation; 302. Positioning hole; 31. Positioning recess; 32. Positioning notch; 33. Sleeve;

[0042] 4. Elastic element; 401. Insertion groove; 41. Base; 42. Elastic arm; 43. Abutment; 44. Positioning protrusion; 45. Positioning plug; 46. Grip part;

[0043] 5. Electrical accessories; 51. Positioning protrusion; 52. Clearance groove; 53. Push rod; 54. Assembly head; 55. Support leg;

[0044] 6. Ontology;

[0045] 7. Operating mechanism; 71. Lever. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0050] This embodiment provides an installation structure. (Refer to...) Figures 2 to 8 As shown, the mounting structure includes a base plate 1, a fixing shaft 2, a cover plate 3, and an elastic element 4. The base plate 1 supports the electrical accessory 5; the first end of the fixing shaft 2 is fixed to the base plate 1; the cover plate 3 is located above the electrical accessory 5, and the second end of the fixing shaft 2 passes through the cover plate 3; the elastic element 4 is located at the second end of the fixing shaft 2 passing through the cover plate 3, and the elastic element 4 provides a force to press against the cover plate 3, so that the cover plate 3 presses the electrical accessory 5 against the base plate 1.

[0051] In this embodiment, the electrical accessory 5 is supported on the substrate 1. A cover plate 3 passes through the second end of the fixing shaft 2. Then, an elastic member 4 is installed at the point where the second end of the fixing shaft 2 passes through the cover plate 3. The elastic member 4 provides an elastic force to press against the cover plate 3, causing the cover plate 3 to press the electrical accessory 5 against the substrate 1, thus fixing the electrical accessory 5. By applying a pressing force through the elastic member 4, the electrical accessory 5 can be quickly assembled and disassembled. Compared with the fixing force applied by traditional screws, the elastic force applied by the elastic member 4 avoids excessive compression of the electrical accessory 5 while ensuring reliable fixing. Furthermore, the elastic force of the elastic member 4 can be adjusted according to the degree of deformation, adapting to changes in the size of the electrical accessory 5 within a certain range, ensuring applicability and compatibility.

[0052] In this embodiment, a groove 21 is provided on the outer peripheral wall of the second end of the fixed shaft 2, and an insertion groove 401 is provided on the elastic member 4. The groove 21 is located on the side of the cover plate 3 away from the base plate 1, and the elastic member 4 is inserted into the groove 21 through the insertion groove 401. See details. Figure 3 As shown, when the elastic element 4 is installed, the elastic element 4 moves along... Figure 3 The middle arrow direction is inserted into the groove 21 opened on the fixed shaft 2 to form a fit similar to a mortise and tenon structure, so as to effectively fix the elastic element 4 and the fixed shaft 2, and facilitate disassembly and assembly.

[0053] In this embodiment, the elastic member 4 includes a base 41 and at least two elastic arms 42. The elastic arms 42 are disposed on the base 41 and extend obliquely toward one side of the cover plate 3. The extended end of the elastic arm 42 is provided with an abutment 43 for abutting against the cover plate 3. Two adjacent elastic arms 42 and the base 41 together form an insertion groove 401. Specifically, in this embodiment, there are two elastic arms 42, and the insertion groove 401 is located between the two elastic arms 42. When the elastic member 4 is inserted into the fixed shaft 2, the abutment 43 at the end of the elastic arm 42 finally makes direct contact with the upper end surface of the cover plate 3. The elastic arm 42 provides elastic force, causing the abutment 43 and the cover plate 3 to press the electrical accessory 5 against the base plate 1, thereby fixing the electrical accessory 5.

[0054] In some other alternative embodiments, the elastic arm 42 may also be provided as three or more, and two adjacent ones of the three or more elastic arms 42 together with the base 41 form a insertion groove 401.

[0055] In some alternative implementations, refer to Figure 3 As shown, multiple slots 21 are spaced apart along the axial direction of the fixed shaft 2. By providing multiple slots 21, the elastic arm 42 can select different slots 21 for insertion according to actual needs, thereby realizing height adjustment and adjustment of the elastic force applied to the cover plate 3.

[0056] In this embodiment, the elastic member 4 further includes a positioning protrusion 44, which is disposed on the base 41. A positioning recess 31 is correspondingly provided on the upper end face of the cover plate 3. The positioning protrusion 44 is used to engage with the positioning recess 31 when the insertion slot 401 is inserted into the groove 21. Specifically, in this embodiment, the positioning protrusion 44 is a protrusion structure formed by bending on the base 41 towards the positioning recess 31. When the position between the elastic member 4 and the cover plate 3 is adjusted to the correct position, the positioning protrusion 44 is inserted into the positioning recess 31 on the cover plate 3, achieving positioning between the elastic member 4 and the cover plate 3 and preventing movement of the positioning shaft of the elastic member 4.

[0057] Furthermore, the elastic element 4 also includes a positioning plug 45 disposed on the base 41, and a corresponding positioning notch 32 is provided on the cover plate 3. The positioning plug 45 is used to insert into the positioning notch 32. Specifically, when the position between the elastic element 4 and the cover plate 3 is adjusted to the correct position, the positioning plug 45 is inserted into the positioning notch 32, thereby further realizing the effective positioning between the elastic element 4 and the cover plate 3.

[0058] Furthermore, the elastic member 4 also includes a gripping portion 46, which extends from one end of the base 41 and protrudes from the cover plate 3. The gripping portion 46 is provided for the operator to grip the elastic member 4 and apply a pulling force to the elastic member 4.

[0059] For example, the gripping part 46 may be a bent structure formed at the end of the base 41 to facilitate gripping by the operator.

[0060] In this embodiment, the base 41, elastic arm 42, abutment 43, positioning protrusion 44, positioning plug 45 and gripping part 46 are integrally formed.

[0061] In this embodiment, the fixed shaft 2 includes a first shaft portion 221 and a second shaft portion 222 arranged in a stepped manner from the first end to the second end. The shaft diameter of the second shaft portion 222 is smaller than that of the first shaft portion 221. A limiting platform 223 is formed between the first shaft portion 221 and the second shaft portion 222. A sleeve 33 is provided on the side of the cover plate 3 facing the fixed shaft 2. The sleeve 33 has a through hole 301 extending to the upper end face of the cover plate 3. The second shaft portion 222 passes through the through hole 301 and is connected to the elastic member 4. The sleeve 33 is used to abut against the limiting platform 223. Specifically, the fixed shaft 2 is configured as a stepped first shaft portion 221 and a second shaft portion 222. When the cover plate 3 is installed, the fixed shaft 2 is inserted through the cooperation of the second shaft portion 222 and the through hole 301. When the cover plate 3 is installed in place, the sleeve 33 abuts against the limiting platform 223, providing reliable and effective support for the cover plate 3 and ensuring that the cover plate 3 is installed reliably and stably.

[0062] Furthermore, the second shaft portion 222 is configured as a non-circular column, and the through hole 301 is a non-circular hole, with the shape of the through hole 301 matching that of the second shaft portion 222. This configuration is also to ensure that after the cover plate 3 passes through the second shaft portion 222, there is no deflection between the cover plate 3 and the fixed shaft 2, ensuring the reliability and effectiveness of the cover plate 3 in pressing against the electrical accessory 5, and preventing the cover plate 3 from shifting and causing misalignment between the cover plate 3 and the electrical accessory 5.

[0063] For example, in this embodiment, the outer periphery of the second shaft portion 222 is formed by the joint enclosure of a first arc surface and a first plane, and the inner peripheral wall of the through hole 301 is formed by the joint enclosure of a second arc surface and a second plane. The first arc surface and the second arc surface correspond one-to-one, and the first plane and the second plane correspond one-to-one.

[0064] Furthermore, the cover plate 3 has a positioning hole 302, and the upper end face of the electrical accessory 5 is correspondingly provided with a positioning protrusion 51. The positioning hole 302 is used for the positioning protrusion 51 to be inserted. Specifically, the mutual cooperation between the positioning hole 302 and the positioning protrusion 51 can also ensure reliable positioning between the cover plate 3 and the electrical accessory 5, prevent the cover plate 3 from deflecting from the fixed shaft 2, ensure the reliability and effectiveness of the cover plate 3 pressing against the electrical accessory 5, and prevent the cover plate 3 from deflecting from the electrical accessory 5.

[0065] Furthermore, a mounting head 23 is provided at the first end of the fixed shaft 2, that is, the end of the first shaft portion 221 away from the second shaft portion 222. A corresponding fixing hole (not shown) is provided on the substrate 1. The mounting head 23 is fixedly inserted into the fixing hole to realize the fixed installation between the fixed shaft 2 and the substrate 1. Optionally, the fixing hole and the mounting head 23 are configured as an interference fit.

[0066] Specifically, the substrate 1 has multiple assembly slots 12, and the bottom of the electrical accessory 5 has multiple assembly heads 54. When the electrical accessory 5 is installed on the substrate 1, the assembly head 54 is inserted into the corresponding assembly slot 12 to achieve fixed installation between the electrical accessory 5 and the substrate 1. Optionally, the assembly slots 12 and the assembly heads 54 are configured to have an interference fit.

[0067] This embodiment provides a circuit breaker. (Refer to...) Figures 2 to 9 As shown, the circuit breaker includes the aforementioned mounting structure, as well as electrical accessories 5, a body 6, and an operating mechanism 7. The base plate 1 is fixed to the body 6, the operating mechanism 7 is mounted on the body 6, and the electrical accessories 5 are used to drive the operating mechanism 7 to close or open the circuit. In this embodiment, the circuit breaker includes the aforementioned mounting structure, which enables quick assembly and disassembly of the electrical accessories 5, avoiding excessive compression of the electrical accessories 5 while ensuring reliable fixation. Furthermore, the elastic force of the elastic element 4 can be adjusted according to the degree of deformation, adapting to variations in the size of the electrical accessories 5 within a certain range, ensuring applicability and compatibility.

[0068] Specifically, the operating mechanism 7 is located below the base plate 1. The base plate 1 has mounting holes 11, and the lever 71 of the operating mechanism 7 is located within the mounting holes 11. The end of the electrical accessory 5 facing the operating mechanism 7 is provided with a push rod 53, which corresponds to the cylinder rod. Specifically, when the electrical accessory 5 performs its action, the push rod 53 extends and strikes the lever 71. If the push rod 53 is too long or the applied force is too great, the elastic element 4 provides reliable and effective cushioning, ensuring that the cylinder rod is not excessively impacted and preventing the lever 71 from breaking.

[0069] Furthermore, the side of the electrical accessory 5 has a clearance groove 52, within which the fixed shaft 2 can be placed, and the shape of the clearance groove 52 is adapted to the fixed shaft 2. The clearance groove 52 is provided to cooperate with the fixed shaft 2, forming a clearance for the fixed shaft 2 and avoiding interference with the layout of the positioning shaft 2.

[0070] Specifically, the bottom of the electrical accessory 5 is provided with multiple support feet 55, and the electrical accessory 5 is supported on the base plate 1 by the support feet 55, so as to be reliable and stable.

[0071] In summary, the installation structure and circuit breaker provided in this embodiment apply a pressing force to the cover plate 3 by setting the elastic element 4, ultimately pressing the cover plate 3 against the electrical accessory 5 on the base plate 1, thereby fixing the electrical accessory 5. The pressing force applied by the elastic element 4 facilitates the quick assembly and disassembly of the electrical accessory 5. Compared with the traditional fixing force applied by screws, it avoids excessive compression of the electrical accessory 5 while ensuring reliable fixing. Furthermore, the elastic force of the elastic element 4 can be adjusted according to the degree of deformation, adapting to the requirements of variations in the size of the electrical accessory 5 within a certain range, ensuring applicability and compatibility.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An installation structure, characterized in that, include: Substrate (1) is used to support electrical accessories (5); A fixed shaft (2) is fixed at its first end to the substrate (1); The cover plate (3) is located above the electrical accessory (5), and the second end of the fixed shaft (2) passes through the cover plate (3). An elastic element (4) is provided at the second end of the fixed shaft (2) passing through the cover plate (3). The elastic element (4) is used to provide a force to press against the cover plate (3) so that the cover plate (3) presses the electrical accessory (5) against the substrate (1).

2. The installation structure according to claim 1, characterized in that, The outer peripheral wall of the second end of the fixed shaft (2) is provided with a groove (21), and the elastic member (4) is provided with a insertion groove (401). The groove (21) is placed on the side of the cover plate (3) away from the base plate (1), and the elastic member (4) is inserted into the groove (21) through the insertion groove (401).

3. The installation structure according to claim 2, characterized in that, Along the axial direction of the fixed shaft (2), the number of slots (21) is arranged in multiple intervals.

4. The installation structure according to claim 2, characterized in that, The elastic element (4) includes a base (41) and at least two elastic arms (42). The elastic arms (42) are disposed on the base (41) and extend obliquely toward one side of the cover plate (3). The extended end of the elastic arm (42) is provided with an abutment (43) for abutting against the cover plate (3). Two adjacent elastic arms (42) together with the base (41) form the insertion groove (401).

5. The installation structure according to claim 4, characterized in that, The elastic element (4) further includes a positioning protrusion (44), which is provided on the base (41). The upper end face of the cover plate (3) is provided with a positioning recess (31). The positioning protrusion (44) is used to engage with the positioning recess (31) when the insertion groove (401) is inserted into the groove (21).

6. The installation structure according to claim 1, characterized in that, The fixed shaft (2) includes a first shaft portion (221) and a second shaft portion (222) arranged in a stepped manner from the first end to the second end. The shaft diameter of the second shaft portion (222) is smaller than the shaft diameter of the first shaft portion (221). A limiting stage (223) is formed between the first shaft portion (221) and the second shaft portion (222). The cover plate (3) has a sleeve (33) on the side facing the fixed shaft (2). The sleeve (33) has a through hole (301) that extends through to the upper surface of the cover plate (3). The second shaft part (222) passes through the through hole (301) and is connected to the elastic member (4). The end of the sleeve (33) away from the cover plate (3) abuts against the limiting platform (223).

7. The installation structure according to claim 6, characterized in that, The second shaft portion (222) is configured as a non-circular column, and the through hole (301) is a non-circular hole, which is adapted to the shape of the second shaft portion (222).

8. The installation structure according to claim 1, characterized in that, The cover plate (3) has a positioning hole (302), and the upper end face of the electrical accessory (5) is provided with a positioning protrusion (51). The positioning hole (302) is used for the positioning protrusion (51) to be inserted.

9. The installation structure according to claim 4, characterized in that, The elastic element (4) also includes a positioning plug (45) provided on the base (41), and a positioning notch (32) is provided on the cover plate (3) accordingly. The positioning plug (45) is used to be inserted into the positioning notch (32).

10. A circuit breaker, characterized in that, Including the mounting structure as described in any one of claims 1-9, it further includes: Electrical accessories (5); The main body (6) is fixed to the substrate (1); An operating mechanism (7) is provided on the main body (6), and the electrical accessory (5) is used to drive the operating mechanism (7) to close or open the circuit.

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