Circuit breaker fixing device in electric cabinet

Abstract

A circuit breaker fixing device in an electric cabinet comprises a guide rail, a circuit breaker, a fixing base and a supporting mechanism, the guide rail is installed in a distribution box, the fixing base is inserted into a through groove formed in the guide rail in a penetrating mode, the fixing base is provided with a baffle and a positioning ring, the side face of the positioning ring is provided with a clamping claw to be clamped to the edge of the through groove, and the side face of the baffle is provided with an inserting groove. The supporting mechanism comprises a transverse plate, an inserting column, an arc-shaped plate, a foot plate, a contact disc and a protective pad, the inserting column is inserted into the inserting groove, and the supporting mechanism makes contact with the circuit breaker and continuously applies elastic force; according to the device, the problem that connection is not firm in a traditional installation mode can be avoided, rapid fixing is achieved through the positioning ring and the clamping claws, angle deviation is prevented through the regular polygon insertion connection structure, fitting performance is improved through continuous force application of the arc-shaped plates, and shock resistance and universality are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical equipment installation technical field, concretely relates to a circuit breaker fixing device in electric cabinet. BACKGROUND

[0002] As a common protection device in electrical system, circuit breaker is widely used in distribution box, electric control cabinet and other scenes, for realizing the connection and disconnection of circuit. In the process of electric cabinet installation, circuit breaker usually needs to be installed on the guide rail, so as to facilitate modular management and later maintenance. In the prior art, buckle type or bolt type structure is usually used to fix the circuit breaker on the guide rail. Among them, the buckle type installation method has certain convenience, but its structural stability is insufficient, often because of buckle wear, uneven stress or installation angle deviation, leading to loose connection of circuit breaker and guide rail, and there is the risk of loosening, tilting or even falling, which not only affects the service life, but also may affect the safety of electrical system.

[0003] In addition, most of the existing circuit breaker installation methods cannot adjust the structure according to the width of the circuit breaker, and cannot provide effective support according to different models of circuit breakers during installation, which is easy to cause installation angle error or assembly gap, further weakening the connection firmness. At the same time, part of the circuit breaker fixing mechanism is easy to cause loose connection and increase the maintenance frequency due to loose fixing angle or support deformation during bearing vibration or long-term operation of electric cabinet. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a circuit breaker fixing device in electric cabinet, which can realize the circuit breaker fixing device in electric cabinet with simple structure, firm connection, strong adaptability and convenient installation, so as to improve the connection stability between circuit breaker and guide rail and meet the installation requirements of different models of circuit breaker.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A circuit breaker fixing device in electric cabinet, comprising a guide rail installed in the inside of distribution box, wherein the guide rail is connected with a circuit breaker;

[0007] A fixing base and a supporting mechanism are arranged between the guide rail and the circuit breaker;

[0008] The fixing base is inserted into the through slot penetratingly arranged on the guide rail;

[0009] The supporting mechanism is symmetrically connected to the side surface of the fixing base by insertion, and the supporting mechanism and the circuit breaker are in close contact, and the supporting mechanism always applies elastic force to the circuit breaker.

[0010] Further, the fixed base comprises a baffle, the side surface of the baffle is fixedly connected with a positioning ring, and the positioning ring is inserted into a through groove provided through the guide rail.

[0011] Further, the side surface of the positioning ring is fixedly connected with a symmetrical clamping pawl, and the clamping pawl is clamped at the edge of the through groove provided through the guide rail.

[0012] Further, the side surface of the baffle is provided with a symmetrical insertion slot.

[0013] The support mechanism comprises a horizontal plate, one end of the horizontal plate is fixedly connected with an insertion column, and the insertion column is inserted into the insertion slot.

[0014] The shapes of the insertion slot and the insertion column are both set as regular polygons.

[0015] Further, the other end of the horizontal plate is fixedly connected with an arc-shaped plate, and one end of the arc-shaped plate is fixedly connected with a foot plate.

[0016] Further, the outer side surface of the arc-shaped plate is fixedly connected with a contact disc, and the side surface of the contact disc is fixedly connected with a protective pad.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses a fixed base is set up on the guide rail, and the positioning ring and the clamping pawl arranged on the fixed base are used to realize quick and stable installation, avoid the loosening problem caused by traditional screw connection, improve the connection firmness between the circuit breaker and the guide rail, and solve the risk that the existing circuit breaker fixing structure is loose in the use process due to vibration, impact and other factors.

[0019] The utility model discloses a plurality of insertion slots are arranged on the side surface of the fixed base, the horizontal plate of the support mechanism is connected with the insertion slot through the insertion column, and the insertion column and the insertion slot are all designed as regular polygons, so that the support angle is effectively prevented from deviating due to external force, the uncontrollable problem of the installation angle of the existing device is overcome, and the support structure keeps the angle stable in the pressure process of the circuit breaker.

[0020] The utility model discloses an arc-shaped plate, a foot plate, a contact disc and a protective pad are arranged in the support mechanism, the elastic deformation of the arc-shaped plate is used to continuously apply elastic force to the circuit breaker, and the buffer function of the protective pad is used, so that the close fit of the connection surface between the circuit breaker and the guide rail is improved, the abrasion and noise caused by direct contact are reduced, the problems of unstable support, uneven contact and vibration interference in the use process of the existing installation mode structure are solved.

[0021] The utility model discloses a support mechanism and the position relation between guide rail can be flexibly adjusted according to different width circuit breaker, has improved the adaptation ability of the device to multiple model circuit breaker, made up the deficiency that the general performance of existing circuit breaker fixing device is poor, and the adaptation range is limited. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic drawing of the utility model;

[0023] Figure 2 It is the split schematic drawing of the utility model;

[0024] Figure 3 It is the structure schematic drawing of the guide rail of the utility model;

[0025] Figure 4 It is the structure schematic drawing of the fixed base of the utility model;

[0026] Figure 5 It is the structure schematic drawing of the baffle of the utility model;

[0027] Figure 6 It is the structure schematic drawing of the support mechanism of the utility model;

[0028] Figure 7 It is the structure schematic drawing of the arc plate of the utility model.

[0029] In the drawing, the component list that each sign represents is as follows:

[0030] 1, guide rail;

[0031] 2, circuit breaker;

[0032] 3, fixed base;

[0033] 31, baffle; 311, plug-in slot;

[0034] 32, positioning ring; 321, clamping pawl;

[0035] 4, support mechanism;

[0036] 41, horizontal plate; 411, plug-in column;

[0037] 42, arc plate; 421, foot plate;

[0038] 43, contact disc; 431, protective pad. DETAILED DESCRIPTION

[0039] In order to make the purpose and the advantage of the utility model more clearly clear, the utility model is specifically explained below with examples. It should be understood that the following text is only used to describe one or several specific implementation manners of the utility model, and does not strictly limit the protection range of the utility model specific request.

[0040] Embodiment 1:

[0041] Referring to Figures 1-7 A circuit breaker fixing device in an electric cabinet, comprising a guide rail 1 installed inside a distribution box, and a circuit breaker 2 connected to the guide rail 1;

[0042] A fixing base 3 and a supporting mechanism 4 are arranged between the guide rail 1 and the circuit breaker 2;

[0043] The fixing base 3 is inserted into the through slot formed on the guide rail 1;

[0044] The supporting mechanism 4 is symmetrically connected to the side surface of the fixing base 3 by insertion, and is in close contact with the circuit breaker 2, and the supporting mechanism 4 always exerts elastic force on the circuit breaker 2;

[0045] By adding the supporting mechanism 4 to the back of the circuit breaker 2 and using the elastic deformation characteristics of the arc-shaped plate 42 to continuously provide elastic force to the circuit breaker 2, the problem of loose connection and poor stability of the traditional buckle installation method is effectively overcome;

[0046] At the same time, the position of the supporting mechanism 4 can be adjusted according to the width of the circuit breaker 2, so that the device is suitable for circuit breakers 2 of different specifications, improving the adaptability and practicality;

[0047] The overall structure of the device is simple, the installation method is quick and efficient, and the firmness and safety of the installation of the circuit breaker inside the electric cabinet are significantly improved.

[0048] Referring to Figures 1-4 The fixing base 3 comprises a baffle 31, and the side surface of the baffle 31 is fixedly connected with a positioning ring 32, which is inserted into the through slot formed on the guide rail 1;

[0049] The front surface of the baffle 31 is provided with a flat structure for closely fitting with the surface of the guide rail 1, thereby providing preliminary lateral support;

[0050] The positioning ring 32 is arranged at the middle position of the back surface of the baffle 31, and the size thereof is matched with the width of the through slot of the guide rail 1, so as to ensure that it can be smoothly inserted and stably fixed after being inserted;

[0051] This structure enables the fixing base 3 to be quickly connected with the guide rail 1, and serves as an important support platform for the connection of the supporting mechanism 4 in the subsequent installation process;

[0052] By introducing the structure design of the positioning ring 32 on the fixing base 3, the problem of structural looseness caused by screw installation is avoided, and the overall installation efficiency and stability are improved.

[0053] Referring to Figures 3-4The side surface of the positioning ring 32 is fixedly connected with a clamping pawl 321 in a symmetrical manner, and the clamping pawl 321 is clamped at the edge of the through groove of the guide rail 1;

[0054] The clamping pawl 321 has a hook-shaped structure, and the top part has a clamping part that is tightened inward. After the positioning ring 32 is inserted into the through groove of the guide rail 1, the clamping pawl 321 can be elastically embedded in the edge of the through groove and mechanically limited;

[0055] Through the engagement of the clamping pawl 321 and the edge structure of the through groove of the guide rail 1, the fixed base 3 will not be loose or slide when subjected to force, effectively enhancing the fixing reliability;

[0056] This structure can realize tool-free quick installation, improve the convenience and efficiency of the installation of internal elements of the electric cabinet, and also solve the problem of insufficient clamping strength during the installation of the traditional guide rail type circuit breaker.

[0057] Referring to Figures 4-7 The side surface of the baffle 31 is symmetrically provided with a plug-in groove 311; the support mechanism 4 comprises a horizontal plate 41, one end of the horizontal plate 41 is fixedly connected with a plug-in column 411, and the plug-in column 411 is inserted into the plug-in groove 311;

[0058] The shapes of the plug-in groove 311 and the plug-in column 411 are both set as regular polygons; the regular polygon structure design can prevent the support mechanism 4 from rotating after plugging under external force, thereby stabilizing the included angle between the support mechanism 4 and the fixed base 3, and enabling the support mechanism 4 to always maintain a vertical force state with the back of the circuit breaker 2;

[0059] This structure overcomes the problem of angle deviation caused by loose connection of the traditional adjustable support structure, and significantly improves the stability and consistency of the overall support of the device.

[0060] Referring to Figures 4-7 The other end of the horizontal plate 41 is fixedly connected with an arc-shaped plate 42, and one end of the arc-shaped plate 42 is fixedly connected with a foot plate 421;

[0061] The arc-shaped plate 42 is an arc surface structure with a certain elasticity, and the middle part of the structure is curved outward. During the process of the circuit breaker 2 approaching the guide rail 1, elastic deformation will occur, and a continuous counter supporting force will be provided after the deformation;

[0062] The foot plate 421 is arranged at the lower end of the arc-shaped plate 42, and is used to contact and support the guide rail 1 or other fixed elements inside the electric cabinet, so that the arc-shaped plate 42 has a stable reaction fulcrum when it is elastically compressed;

[0063] Through the cooperation of the arc-shaped plate 42 and the foot plate 421, the support mechanism 4 can always maintain a stable supporting state during the installation of the circuit breaker 2, significantly enhancing the close-fitting tightness of the circuit breaker 2 in the vertical direction, and improving the overall shock resistance and reliability of the equipment.

[0064] Referring to Figures 6-7 The outer side of the arc-shaped plate 42 is fixedly connected with a contact disc 43, and the side of the contact disc 43 is fixedly connected with a protective pad 431;

[0065] The contact disc 43 is provided in a disc-shaped structure, which has a large contact area with the back of the circuit breaker 2, can uniformly distribute the elastic force, and avoids local concentrated stress from causing deformation or wear of the circuit breaker;

[0066] The protective pad 431 is installed in close contact with the outer surface of the side of the contact disc 43 and is made of flexible rubber material, which has good buffering performance and anti-skid performance;

[0067] During installation of the circuit breaker 2 to the rail 1, the protective pad 431 can further improve the contact stability, reduce the vibration transmission caused by hard contact, and prolong the service life of the circuit breaker 2;

[0068] The structure effectively solves the wear and noise problems caused by too high rigidity of the contact surface in the installation of the traditional circuit breaker, and improves the overall operation reliability and user experience of the equipment.

[0069] Embodiment 2:

[0070] Referring to Figures 1-4 In this embodiment, the rail 1 is selected to be a TH35-7.5 standard type galvanized metal rail, the fixed base 3 is made of high-strength nylon material, the baffle 31 is an integral injection molding structure, the baffle 31 is fixedly provided with a positioning ring 32 on the side, and the positioning ring 32 is inserted into the through groove provided on the rail 1; The positioning ring 32 is provided with a clamping jaw 321 symmetrically on both sides, the clamping jaw 321 is made of high-elasticity polyformaldehyde material, and the top end is provided with an arc-shaped outer protrusion design, which can be elastically rebounded and clamped on the edge of the through groove after being inserted through the through groove of the rail 1; During installation, the fixed base 3 only needs to be aligned with the through groove and lightly pressed to realize automatic clamping and form stable connection; When disassembling, only needs to slide slightly along the rail 1 in the axial direction or press the clamping jaw 321 with a special wrench to release the fixation.

[0071] Comparative case:

[0072] The circuit breaker fixation structure adopting the traditional screw type installation method needs to manually fix the screws at both ends with the help of tools during installation, which is low in installation efficiency and easy to cause the screws to be loose due to vibration, thereby causing the risk of loose connection; In comparison, the plug-in clamping structure in this embodiment has higher assembly efficiency and stability, can be repeatedly plugged and unplugged without damaging the clamping port, and improves the service life and safety.

[0073] Embodiment 3:

[0074] Referring to Figures 4-5In this embodiment, the plug-in slot 311 on the fixed base 3 is designed as a regular hexagonal structure, the inner wall of the plug-in slot 311 is precisely processed by CNC, the plug-in column 411 is arranged at one end of the cross plate 41 of the supporting mechanism 4, the plug-in column 411 has a regular hexagonal shape corresponding to the plug-in slot 311, and both are made of glass fiber reinforced polyamide plastic (PA66-GF30) which has good toughness and thermal stability; during installation, the plug-in column 411 is tightly inserted into the plug-in slot 311, and due to the limiting effect of the polygonal side structure, when the supporting mechanism 4 is subjected to the rebound pressure of the circuit breaker 2, the rotation of the cross plate 41 can be effectively prevented, so that the supporting angle remains unchanged, thereby improving the supporting stability of the supporting mechanism 4 to the back of the circuit breaker 2.

[0075] Comparative case:

[0076] The traditional plug-in structure usually adopts a cylindrical fit, which cannot effectively limit rotation, and the angle of the supporting structure is easy to deviate in a long-term working state; and the embodiment uses a regular polygon fit structure to improve the connection rigidity, so that the angle of the device is constant under pressure, effectively prolonging the stable operation time of the supporting system.

[0077] Embodiment 4:

[0078] Reference Figures 5-6 In this embodiment, the arc-shaped plate 42 in the supporting mechanism 4 is made of 65Mn spring steel material with a thickness of 0.6 mm and is processed into an outwardly convex arc-shaped structure by hot bending process; the cross plate 41 and the arc-shaped plate 42 are connected by spot welding, the bottom end of the arc-shaped plate 42 is welded with a foot plate 421, the foot plate 421 is made of ABS injection molding material, and the bottom surface of the foot plate 421 is attached with a 3M high molecular buffer pad; during installation of the circuit breaker 2, when the circuit breaker 2 is pressed from above to the guide rail 1, the arc-shaped plate 42 elastically deforms and stores the deformation amount, after installation, the arc-shaped plate 42 continuously applies force to the back of the circuit breaker 2 through its own rebound force, so that the buckle of the circuit breaker 2 is always tightly attached to the guide rail 1, ensuring firm connection.

[0079] Comparative case:

[0080] The common circuit breaker installation structure only relies on buckles or spring sheets for limiting, and lacks continuous supporting force, and is easy to appear loose or shaking after vibration or temperature rise deformation; the embodiment provides continuous elastic force through the high-elasticity arc-shaped structure, so that the connection is more closely, and the anti-vibration performance and electrical safety are significantly enhanced.

[0081] Embodiment 5:

[0082] Reference Figures 6-7In the embodiment, the arc-shaped plate 42 is fixedly connected with a contact disc 43 outside, the contact disc 43 is an aluminum alloy anodic oxidation disc with a diameter of 30 mm, and the surface is sandblasted to improve the friction; the contact disc 43 is fixed with a protective pad 431 on the side through double-sided adhesive, the protective pad 431 is a 3 mm thick silica gel buffer layer with a hardness of Shore A30, which is soft and has excellent slip resistance and pressure resistance; after installation, the contact disc 43 is tightly attached to the back of the circuit breaker 2, and the protective pad 431 plays an effective buffering role when the circuit breaker 2 vibrates or thermally expands and contracts, preventing local stress or damage to the plastic shell caused by hard contact.

[0083] Comparative case:

[0084] In the circuit breaker installation system without a buffer pad structure, the support surface is a hard metal directly contacting the plastic shell of the circuit breaker, which is easy to cause vibration conduction and shell scratches; and the embodiment sets a flexible protective pad on the contact disc, which not only improves the connection and adhesion, but also reduces impact and noise, and enhances the use reliability and comfort.

[0085] The working principle of the utility model is:

[0086] In use, according to the position of the circuit breaker 2 to be installed, the fixed base 3 is connected in the through slot of the corresponding guide rail 1 on the back of the circuit breaker 2;

[0087] When connecting the fixed base 3 with the guide rail 1, only need to insert the positioning ring 32 into the through slot of the guide rail 1, and let the clamping pawl 321 be clamped to the edge of the through slot with the insertion of the positioning ring 32;

[0088] After the fixed base 3 is fixed on the guide rail 1, then adjust the included angle between the support mechanism 4 and the guide rail 1 according to the width of the circuit breaker 2;

[0089] Since the plug-in column 411 and the plug-in slot 311 are both set as regular polygons, the included angle between the support mechanism 4 and the fixed base 3 after connection can be avoided from changing;

[0090] Then install the circuit breaker 2 on the guide rail 1, when installing the circuit breaker 2, first let the recess on the back of the circuit breaker 2 above be clamped to the upper end of the guide rail 1, and press the circuit breaker 2, let the circuit breaker 2 be close to the guide rail 1, then push the buckle at the bottom of the back of the circuit breaker 2 upward, let the buckle be connected to the edge of the bottom of the guide rail 1;

[0091] In the process of the circuit breaker 2 approaching the guide rail 1, the arc-shaped plate 42 always provides elastic force to the circuit breaker 2, so that the support mechanism 4 always provides elastic force to the back of the circuit breaker 2 after the circuit breaker 2 is connected to the guide rail 1, thereby enabling the buckle at the bottom of the back of the circuit breaker 2 to be in closer contact with the guide rail 1, and thereby enabling the connection between the circuit breaker 2 and the guide rail 1 to be more firm.

[0092] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as falling within the scope of the present application. Structures, devices and operating methods not specifically described and explained in the present application, if not specifically described and limited, are implemented according to conventional means in the art.

Claims

1. A circuit breaker fixing device in an electrical cabinet, characterized in that: Includes a guide rail (1) installed inside the distribution box, on which a circuit breaker (2) is connected; A fixed base (3) and a support mechanism (4) are provided between the guide rail (1) and the circuit breaker (2); The fixed base (3) is inserted into the through slot opened on the guide rail (1); The support mechanism (4) is symmetrically connected to the side of the fixed base (3) by plugging, and the support mechanism (4) and the circuit breaker (2) are in close contact, and the support mechanism (4) always applies elastic force to the circuit breaker (2).

2. The circuit breaker fixing device in an electrical cabinet according to claim 1, characterized in that: The fixed base (3) includes a baffle (31), and a positioning ring (32) is fixedly connected to the side of the baffle (31). The positioning ring (32) is inserted into the through slot opened on the guide rail (1).

3. The circuit breaker fixing device in an electrical cabinet according to claim 2, characterized in that: The positioning ring (32) is symmetrically fixedly connected to the side with a locking claw (321), which engages with the edge of the through slot opened on the guide rail (1).

4. The circuit breaker fixing device in an electrical cabinet according to claim 2, characterized in that: The side of the baffle (31) is symmetrically provided with insertion slots (311); The support mechanism (4) includes a horizontal plate (41), and a plug-in post (411) is fixedly connected to one side of the horizontal plate (41), and the plug-in post (411) is inserted into the plug-in groove (311); The shapes of the insertion slot (311) and the insertion post (411) are both set as regular polygons.

5. The circuit breaker fixing device in an electrical cabinet according to claim 4, characterized in that: An arc-shaped plate (42) is fixedly connected to the other end of the horizontal plate (41), and a foot plate (421) is fixedly connected to one end of the arc-shaped plate (42).

6. The circuit breaker fixing device in an electrical cabinet according to claim 5, characterized in that: A contact plate (43) is fixedly connected to the outer side of the arc plate (42), and a protective pad (431) is fixedly connected to the side of the contact plate (43).

Images