Universal circuit breaker frame

Abstract

The utility model relates to a universal circuit breaker frame, which comprises a top cover shell, an insulating bottom plate, a left side plate, a right side plate and a mounting seat, the left side plate and the right side plate are connected with the top cover shell and the insulating bottom plate, the mounting seat comprises a plurality of cross rods arranged in parallel and a plurality of support rods fixed between adjacent cross rods, and the side plates are fixedly connected with the cross rods. By adopting the above technical scheme, through the modularized mounting seat design of the plurality of cross rods arranged in parallel and the plurality of supporting rods fixed between the adjacent cross rods, the mounting seat of the circuit breaker frame can be expanded, when the number of poles needs to be increased, only the number of the cross rods and the number of the supporting rods need to be increased, a new integral mold does not need to be manufactured, and the production cost is reduced. At the same time, the design of the insulating separator plate and the driving device realizes the isolation and connection control of the contact assembly and the internal busbar of the circuit breaker, and ensures the safety of the modular structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to circuit breaker technical field, especially relate to a universal circuit breaker frame. BACKGROUND

[0002] The universal circuit breaker is a key distribution protection electric appliance, and its core functions include switching on, carrying and breaking current under normal circuit conditions, and switching on, carrying for a certain time and breaking current under specified abnormal conditions, and the contact system is the core component of the circuit breaker, and the design and manufacturing quality thereof is directly related to the performance, reliability and cost of the product.

[0003] In the prior art, the frame type circuit breaker is usually designed as different product models according to the number of poles and whether it is assembled, and in order to realize different pole numbers of products, manufacturers usually need to develop independent main body insulating frame molds for each pole number of circuit breakers corresponding to the installation of the contact system part, so that the cost is high. UTILITY MODEL CONTENTS

[0004] The utility model discloses a universal circuit breaker frame, which solves the problem of developing independent main body insulating frame molds for different pole numbers of circuit breakers to install the contact system.

[0005] The utility model discloses a universal circuit breaker frame, which solves the problem of developing independent main body insulating frame molds for different pole numbers of circuit breakers to install the contact system.

[0006] The installation seat is provided with a plurality of partition plate assemblies close to one side of the circuit breaker interior, the partition plate assembly includes an insulating partition plate that can slide relative to the installation seat and a driving device that drives the insulating partition plate, adjacent support rods and corresponding insulating partition plates have an insulating space for accommodating a contact assembly, the insulating partition plate slides to form a gap for the busbar inside the circuit breaker to pass into the insulating space, upper and lower wiring busbars are fixedly arranged between adjacent support rods, the upper and lower wiring busbars are connected with a contact assembly on the side of the circuit breaker interior, and T-shaped busbars are fixedly arranged on the side of the circuit breaker exterior of the upper and lower wiring busbars.

[0007] The above technical scheme is adopted, the modular mounting seat design of the parallel arrangement of the plurality of cross rods and the plurality of support rods fixed between adjacent cross rods is used, the mounting seat of the circuit breaker frame is expandable, when the pole number needs to be increased, the number of cross rods and support rods only needs to be increased, a new integral mold does not need to be manufactured for this, meanwhile, the design of the insulating partition plate and the driving device realizes the isolation and connection control of the contact assembly and the busbar inside the circuit breaker, and the safety of the modular structure is ensured.

[0008] The further setting of the utility model is that the side of the support rod protrudes with a mounting table, and the upper connection busbar or the lower connection busbar is fixedly arranged on the end face of the mounting table of the adjacent support rods.

[0009] The above further setting is adopted, the mounting table protruding from the side of the support rod provides a special and accurate installation positioning reference for the upper connection busbar and the lower connection busbar, ensures that all connection busbars can be accurately and firmly installed on the preset position, realizes the standardized docking between the modules, improves the assembly precision and efficiency, and ensures the reliability of the electrical connection.

[0010] The further setting of the utility model is that the upper connection busbar and the lower connection busbar are arranged in parallel along the length direction of the support rod.

[0011] The above further setting is adopted, the upper connection busbar and the lower connection busbar are arranged in parallel along the length direction of the support rod, so that the layout of the entire conductive loop is regular and compact, which is beneficial to optimizing the electromagnetic field distribution inside the circuit breaker, reducing the loop resistance, and realizing regular docking with the external T-shaped busbar, facilitating installation and maintenance.

[0012] The further further setting of the utility model is that each partition plate assembly comprises two insulating partition plates which are slidably arranged on the mounting seat, the two insulating partition plates are arranged in sequence along the direction of the mounting seat towards the inside of the circuit breaker, a strip-shaped hole is arranged on the insulating partition plate, and the driving device synchronously drives the two insulating partition plates to slide to overlap or stagger the strip-shaped holes on the two insulating partition plates.

[0013] The above further further setting is adopted, the two insulating partition plates with strip-shaped holes control the overlapping and staggering of the strip-shaped holes through the driving device, the opening or closing of the gap for the busbar inside the circuit breaker to enter the insulating space is realized, the control position is accurate, and the connection reliability is avoided.

[0014] The further further setting of the utility model is that the support rod is provided with a groove between the upper connection busbar and the lower connection busbar for embedding and fixing the driving device.

[0015] The above further further setting is adopted, the groove is arranged on the support rod for embedding and fixing the driving device, so that the driving device becomes an integrated part of the entire frame instead of an external component, space is saved, and the structure is more compact.

[0016] The utility model discloses still further setting: the top of the end face of support rod towards circuit breaker interior, bottom and the side of recess all are provided with limit structure, the limit structure includes with the sliding surface of upper and lower end surface contact or clearance cooperation of insulating partition and the limit block of protruding on the sliding surface, two insulating partitions are arranged on the side of limit block and deviate circuit breaker interior.

[0017] Adopt the limit structure of the further setting of above-mentioned, provide accurate movement guide and installation positioning for the sliding of insulating partition, together ensure that the sliding of insulating partition is stable, smooth, and will not occur jam or skew.

[0018] The utility model discloses still further setting: the drive arrangement includes presser and sets up a pair of limit strips on the end face of presser, the interval between a pair of limit strips is smoothly reduced along the direction towards circuit breaker interior, and the top or bottom of two insulating partitions is provided with the bayonet fitting of limit strip adaptation.

[0019] Adopt the further setting of above-mentioned, when presser is pushed, two limit strips can drive two insulating partitions to slide towards two sides opposite direction synchronously, equal distance, guarantee that two strip holes can be accurate and align.

[0020] The utility model discloses still further setting: the drive arrangement includes the casing, the casing is fixedly arranged in the recess, the presser protrudes towards circuit breaker interior side, the casing is provided with telescopic spring, and the presser extrudes telescopic spring and moves in the casing.

[0021] Adopt the further setting of above-mentioned, and the telescopic spring is arranged in the drive arrangement, realizes automatic reset function, when the external force of presser is pushed and is cancelled, under the condition that no busbar passes through strip hole and enters insulating space, the elasticity of telescopic spring can automatically push presser back to the original position, thereby drive insulating partition to close passageway. BRIEF DESCRIPTION OF DRAWINGS

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

[0023] Figure 2 It is the structure schematic drawing of the embodiment of the utility model in installation platform installation upper wiring busbar, lower wiring busbar;

[0024] Figure 3 It is the overall structure schematic drawing of the embodiment of the utility model in installation platform and insulating partition cooperation;

[0025] Figure 4 It is the overall structure schematic drawing of the embodiment of the utility model in installation platform;

[0026] Figure 5 It is the overall structure schematic view of another view angle of the mounting table in the embodiment of the utility model;

[0027] Figure 6 It is the overall structure schematic view of the support rod located in the middle of the mounting table in the embodiment of the utility model;

[0028] Figure 7 It is the overall structure schematic view of another view angle of the support rod located in the middle of the mounting table in the embodiment of the utility model;

[0029] Figure 8 It is the overall structure schematic view of the support rod located in the side of the mounting table in the embodiment of the utility model;

[0030] Figure 9 It is the overall structure schematic view of two insulating partition plates in the partition plate assembly in the embodiment of the utility model;

[0031] Figure 10 It is the overall structure schematic view of the driving device in the embodiment of the utility model.

[0032] In the figure: 1, top cover; 2, insulating bottom plate; 3, side plate; 4, mounting seat; 41, cross rod; 42, support rod; 421, mounting table; 5, contact assembly; 51, upper wiring busbar; 52, lower wiring busbar; 6, T-shaped bus; 7, insulating space; 8, insulating partition plate; 81, strip-shaped hole; 82, bayonet; 9, driving device; 91, shell; 92, pressing piece; 921, limiting strip; 93, extension spring; 10, recess; 11, sliding surface; 12, limiting block. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] It should be noted that, in the description of the utility model, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.

[0035] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] like Figures 1-10 As shown, a universal circuit breaker frame includes a top cover 1, an insulating base plate 2, side plates 3, and a mounting base 4. The mounting base 4 consists of two parallel crossbars 41 and a plurality of support rods 42 fixed between the two crossbars 41.

[0038] The support rod 42 includes a side support rod 42 and a middle support rod 42; an upper wiring busbar 51 and a lower wiring busbar 52 are fixedly arranged between adjacent support rods 42, including between the side support rod 42 and the middle support rod 42 and between the two middle support rods 42. Specifically, a mounting platform 421 protrudes from the side of the support rod 42, and the upper wiring busbar 51 and the lower wiring busbar 52 are fastened to the end faces of the mounting platforms 421 protruding towards each other by screws, and the upper wiring busbar 51 and the lower wiring busbar 52 are arranged parallel to each other along the length direction of the support rod 42.

[0039] The upper busbar 51 and the lower busbar 52 are connected to a T-shaped busbar 6 on the side facing the outside of the circuit breaker for connecting to the external circuit; the side facing the inside of the circuit breaker is used for clamping and connecting the contact assembly 5.

[0040] The support rod 42 is fixed to the crossbar 41 through the connection structure at both ends, and the crossbar 41 is connected to the left and right side plates 3 to form a sturdy and expandable skeleton structure. In this embodiment, a three-pole circuit breaker is used. The mounting base 4 of the three-pole circuit breaker frame contains four support rods 42, which form three independent mounting units between each other.

[0041] It should be noted that by simply adding a support rod 42 and a section of crossbar 41, the frame can be expanded into a four-pole circuit breaker without manufacturing a completely new integral housing mold. This allows for flexible combination of products with different pole numbers and models through standardized crossbar 41 and support rod 42 modules.

[0042] The mounting base 4 is provided with a plurality of partition assemblies near the side close to the inside of the circuit breaker, each of which comprises a slidable insulating partition 8 and a driving device 9, and the adjacent support rod 42 and the corresponding insulating partition 8 are provided with an insulating space 7 for accommodating the contact assembly 5, wherein each insulating space 7 can correspond to one partition assembly, or two insulating spaces 7 can correspond to one partition assembly. In the embodiment, three insulating spaces 7 provided with the upper busbar 51 correspond to one insulating assembly, and three insulating spaces 7 provided with the lower busbar 52 correspond to another insulating assembly.

[0043] In the embodiment, each partition assembly comprises two insulating partitions 8 which are slidably arranged on the mounting base 4, and the two insulating partitions 8 are arranged in sequence along the direction of the mounting base 4 towards the inside of the circuit breaker, and can be arranged in overlapping or gap cooperation. Each insulating partition 8 is provided with a plurality of strip holes 81 of the same number, and the driving device 9 synchronously drives the two insulating partitions 8 to slide to overlap or stagger the strip holes 81 on the two insulating partitions 8.

[0044] In the embodiment, the support rod 42 is provided with a groove 10 for embedding and fixing the driving device 9, and the driving device 9 can adopt a door opener, which specifically comprises a housing 91, a pressing piece 92 and an extension spring 93. The end surface of the pressing piece 92 is provided with a pair of limiting strips 921, and the distance between the pair of limiting strips 921 smoothly decreases along the direction towards the inside of the circuit breaker.

[0045] Further, the top or bottom of each insulating partition 8 is provided with a bayonet 82 matched with the limiting strips 921, and the limiting strips 921 drive the insulating partition 8 to move through the bayonet 82.

[0046] The top, bottom and side edge of the groove 10 of the end surface of the support rod 42 towards the inside of the circuit breaker are provided with limiting structures, which comprise a sliding surface 11 in contact with or gap cooperation with the upper and lower end surfaces of the insulating partition 8, and a limiting block 12 protruding from the sliding surface 11, and the two insulating partitions 8 are arranged on the side of the limiting block 12 away from the inside of the circuit breaker. The limiting structure provides precise movement guide and installation positioning for the sliding of the insulating partition 8.

[0047] Working process: on state: when the connection is needed, press the presser 92 of the driving device 9 inwardly, the limiting strip 921 moves, drives two insulation partitions 8 to slide synchronously, until the strip-shaped holes 81 completely coincide, form a complete channel, at this time, the busbar inside the circuit breaker can pass through the channel, extend into the insulation space 7 and reliably electrically connect with the contact assembly 5; isolation state: under the action of the spring force, the presser 92 is in the extended position, two insulation partitions 8 are pushed by the wedge-shaped limiting strip 921 and slide to both sides, the strip-shaped holes 81 on them are staggered, at this time, the insulation partition 8 insulates the contact assembly 5 inside from the busbar passage inside the circuit breaker, forms a safe insulation space 7.

[0048] Specifically, the modular design of the support rod 42 realizes the pole number scalability of the circuit breaker frame, fundamentally solves the industry problem that the mold needs to be repeatedly developed due to the change of the pole number, significantly reduces the cost and improves the production flexibility.

Claims

1. A frame of a universal circuit breaker comprising a top cover (1), an insulating base plate (2), left and right side plates (3) connecting the top cover (1) and the insulating base plate (2), and a mounting seat (4), characterized in that, The mounting base (4) comprises a plurality of horizontal rods (41) arranged in parallel and a plurality of support rods (42) fixed between adjacent horizontal rods (41), and the side plate (3) is fixedly connected with the horizontal rods (41); The mounting base (4) is provided with a plurality of partition plate assemblies near the side of the circuit breaker, the partition plate assembly comprises an insulating partition plate (8) capable of sliding relative to the mounting base (4) and a driving device (9) for driving the insulating partition plate (8), adjacent support rods (42) and corresponding insulating partition plates (8) are provided with an insulating space (7) for accommodating the contact assembly (5), and the insulating partition plate (8) is provided with a gap for the bus bar inside the circuit breaker to pass into the insulating space (7). The upper and lower bus bars (51) and (52) are connected with a contact assembly (5) on the side of the circuit breaker, and the upper and lower bus bars (51) and (52) are fixedly provided with T-shaped bus bars (6) on the side of the circuit breaker.

2. A universal circuit breaker frame according to claim 1, wherein, The support rod (42) is provided with a mounting table (421) on the side edge, and the upper and lower bus bars (51) and (52) are fixedly arranged on the end faces of the mounting tables (421) protruding towards each other of adjacent support rods (42).

3. A universal circuit breaker frame according to claim 1 or 2, wherein, The upper and lower bus bars (51) and (52) are arranged in parallel along the length direction of the support rod (42).

4. A universal circuit breaker frame according to claim 3 wherein, Each partition plate assembly comprises two insulating partition plates (8) slidingly arranged on the mounting base (4), the two insulating partition plates (8) are arranged in sequence on the mounting base (4) towards the inside of the circuit breaker, the insulating partition plate (8) is provided with a strip-shaped hole (81), and the driving device (9) synchronously drives the two insulating partition plates (8) to slide to overlap or stagger the strip-shaped holes (81) on the two insulating partition plates (8).

5. A universal circuit breaker frame according to claim 4, characterized in that, The support rod (42) is provided with a groove (10) for embedding and fixing the driving device (9) between the upper and lower bus bars (51) and (52).

6. A molded thermoplastic circuit breaker frame as defined in claim 5, wherein, The top, bottom and side edge of the groove (10) of the end face of the support rod (42) towards the inside of the circuit breaker are provided with a limiting structure, the limiting structure comprises a sliding surface (11) in contact with or gap-fitted with the upper and lower end faces of the insulating partition plate (8) and a limiting block (12) protruding from the sliding surface (11), and the two insulating partition plates (8) are arranged on the side of the limiting block (12) away from the inside of the circuit breaker.

7. A universal circuit breaker frame according to claim 5 wherein, The driving device (9) comprises a pressing piece (92) and a pair of limiting strips (921) arranged on the end face of the pressing piece (92), the distance between the pair of limiting strips (921) is smoothly reduced towards the inside of the circuit breaker, and the top or bottom of the two insulating partition plates (8) is provided with a bayonet (82) matched with the limiting strip (921).

8. A universal circuit breaker frame according to claim 7, characterized in that, The driving device (9) comprises a shell (91) fixedly arranged in the recess (10), the pressing piece (92) extends to the inside of the circuit breaker, and the shell (91) is provided with a telescopic spring (93), and the pressing piece (92) moves in the shell (91) by extruding the telescopic spring (93).

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