CN208174123U - A kind of drawout breaker - Google Patents

Abstract

A kind of drawout breaker, the breaker includes breaker body and drawer chassis, the breaker body includes ontology outlet row, the drawer chassis includes drawer seat bottom frame, and the drawer seat bottom frame has touching bridge cavity, is equipped with drawer chassis busbar in the touching bridge cavity, the drawer chassis busbar includes at least two busbar electrical connection sections, one end of clamping touching bridge on the busbar electrical connection section, the other end and the ontology outlet row for touching bridge are mating, feature：Adjacent touching bridge is clamped on different electrical connection sections and position offsets one from another.By changing arrangement of the touching bridge in drawer seat bottom frame, so that the two sides of each touching bridge can be fully exposed to the air-flow of surrounding, to promote the radiating efficiency of touching bridge.

Description

A kind of drawout breaker

Technical field

The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of drawout breaker.

Background technique

Omnipotent breaker is well known circuit protection device, for distributing the mistake of electric energy and protection circuit and power-supply device Load, under-voltage, short circuit etc. lead to breaker temperature rise with higher usually because long-time loads the electric current of kilo-ampere.And compared with High temperature rise becomes the working condition of breaker badly, and it is many unfavorable to bring, as caused the premature aging of insulating part, contact The bad pernicious phenomenon such as accelerated oxidation, leverages the service life of breaker.In addition, in order to meet the miniaturization of breaker It is required that structure is more and more compacter, and so that the temperature rise in small space is effectively controlled becomes technological difficulties.

In existing open frame circuit breaker, touching bridge is equipped in drawer seat bottom frame, touching bridge one end is electrically connected breaker body Outlet row, the other end is electrically connected drawer chassis busbar, and be to guarantee to be abutted against by way of clamping at two electrical connections Touching.Therefore, touch bridge both ends calorific value it is very big, and touch bridge be usually located at it is intracavitary in the drawer seat bottom frame of a relative closure, although The connection drawer seat bottom frame inner cavity and external venthole are offered on the drawer chassis, but since existing touching bridge is in It is arranged side by side, heat dissipation effect is unsatisfactory.

Summary of the invention

The purpose of this utility model is to provide for a kind of drawout breaker, by changing touching bridge in drawer seat bottom frame Arrangement, so that the two sides of each touching bridge can be fully exposed to the air-flow of surrounding, to promote the radiating efficiency of touching bridge.

What the purpose of this utility model was such to reach, a kind of drawout breaker, the breaker includes open circuit Device ontology and drawer chassis, the breaker body include ontology outlet row, and the drawer chassis includes drawer seat bottom frame, described Drawer seat bottom frame have touching bridge cavity, drawer chassis busbar, the drawer chassis busbar are installed in the touching bridge cavity Including at least two busbar electrical connection sections, one end of clamping touching bridge on the busbar electrical connection section, touch the other end of bridge with The ontology outlet row is mating, it is characterised in that：Adjacent touching bridge be clamped on different electrical connection sections and position that This is staggered.

In a specific embodiment of the utility model, the electrical connection section is divided into the first electrical connection section and second Electrical connection section；First electrical connection section and the second electrical connection section is arranged in parallel, and adjacent touching bridge is clamped in the first electricity respectively On interconnecting piece and the second electrical connection section.

In another specific embodiment of the utility model, the touching bridge includes bracket, reed, support plate and touching Piece, the contact have two groups, and two groups of contacts are oppositely arranged and are resisted against in the support plate；The reed is two pieces, Two pieces of reeds are resisted against the outside of every group of contact, and bracket is then set in the outside of two pieces of reeds；The support plate is fixed on On the bracket.

Adjacent touching bridge due to being clamped on different electrical connection sections and position offsets one from another by the utility model, so that often The two sides of a touching bridge can be fully exposed to the air-flow of surrounding, to promote the radiating efficiency of touching bridge.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of drawer chassis described in the utility model.

Fig. 2 is touching bridge described in the utility model and drawer chassis busbar assembling schematic diagram.

Fig. 3 is the structural schematic diagram of drawer chassis busbar described in the utility model.

Fig. 4 is the structural schematic diagram of touching bridge described in the utility model.

Fig. 5 is the structural schematic diagram of breaker body outlet row described in the utility model.

Fig. 6 is the planar structure schematic diagram that circuit breaker internal described in the utility model touches the connection of bridge both ends.

In figure：1. drawer chassis, 11. touching bridges, 111. brackets, 112. reeds, 113. support plates, 114. contacts, 12. drawer chassis Busbar, 121. fixed station terrace edges, 1211. fixation holes, 122. electrical connection sections, 1221. electrical contact ends, 13. drawer seat bottom frames, 131. Touch bridge cavity, 132. busbar mounting holes；2. breaker body, 21. ontology outlet rows.

Specific embodiment

Applicant will below be described in detail specific embodiment of the present utility model in conjunction with attached drawing, but applicant is to reality The description for applying example is not limitation to technical solution, and any change in the form rather than substance according to the utility model design is all answered When being considered as the protection scope of the utility model.

A kind of drawout breaker, the breaker include drawer chassis 1 and breaker body 2, and breaker body 2 can push away Enter inside the drawer chassis 1, is electrically connected with the realization of drawer chassis 1.The breaker body 2 can also pull out described Drawer chassis 1 realizes the separation with the drawer chassis 1.Such is the essential structure of drawout breaker.

Such as Fig. 1, the drawer chassis 1 includes drawer seat bottom frame 13, the drawer being fixed on the drawer seat bottom frame 13 It seat busbar 12, the touching bridge 11 that is clamped on the drawer chassis busbar 12；The drawer seat bottom frame 13 is made of insulating materials, Usually DMC material or BMC material.There are the drawer seat bottom frame 13 two rows to touch bridge cavity 131, for three-phase break Device, the every row of touching bridge cavity 131 are three.And for four phase breakers, the every row of touching bridge cavity 131 is four. Usually the drawer chassis busbar 12 is made by copper, has excellent conducting function.The drawer chassis busbar 12 is in " Π " shape.The drawer chassis busbar 12 includes fixed station terrace edge 121, and fixation hole is equipped on the fixed station terrace edge 121 1211, screw passes through fixation hole 1211 and is screwed into drawer seat bottom frame 13, so that drawer chassis busbar 12 is fixed to drawer seat bottom frame On 13.And the busbar mounting hole 132 installed for drawer chassis busbar 12 is equipped on drawer seat bottom frame 13, the busbar installation Hole 132 is located at the bottom of the touching bridge cavity 131.After the drawer chassis busbar 12 is installed in place, the drawer chassis 12 side of busbar is exposed to the outside of drawer seat bottom frame 13, and the other side is exposed to the inside of drawer seat bottom frame 13.Drawer chassis is female Electrical connection section 122 on row 12 also with two stretchings, two electrical connection sections 122 are arranged in parallel in the form of sheets and relatively, described Electrical connection section 122 is used to be electrically connected with touching bridge 11.Multiple electrical contact ends 1221, Mei Yi electricity are equipped in the end of electrical connection section 122 The corresponding touching bridge 11 of contact jaw 1221, that is to say, that when a touching bridge 11 clips on the electrical connection section 122, only with one Electrical contact end 1221 contacts.Gap is equipped between adjacent electrical contact end 1221.The setting in the gap equally enables to gas Stream more fully touches the touching bridge 11, to improve the heat dissipation effect of touching bridge 11.

In the present invention, adjacent touching bridge 11 is clamped on different electrical connection sections 122, and example is electrically connected as mentioned Portion 122 divides for the first electrical connection section and the second electrical connection section；First electrical connection section and the second electrical connection section is arranged in parallel, Adjacent touching bridge 11 is clamped in respectively on the first electrical connection section and the second electrical connection section.Such as a touching bridge 11 is clamped in the first electricity On interconnecting piece, then touching bridge 11 adjacent thereto is clamped on the second electrical connection section, i.e., adjacent 11 position of touching bridge offsets one from another.

Such as Fig. 4, the touching bridge 11 includes bracket 111, reed 112, support plate 113 and contact 114, the contact 114 have two groups, and two groups of contacts 114 are oppositely arranged and are resisted against in the support plate 113.The reed 112 be two pieces, two Piece reed 112 is resisted against the outside of every group of contact 114, and bracket 111 is then set in the outside of two pieces of reeds 112.The branch Fagging 113 is fixed on the bracket 111.Wherein：The bracket 111 is square frame-shaped, and the reed 112 is leaf spring, The support plate 113 is the strip that metal plate bending is formed, and both ends snap fit onto the two sides of bracket 111 and achieve a fixed connection.

It is the structural schematic diagram of breaker body 2 such as Fig. 5, the breaker body 2 includes ontology outlet row 21, institute The ontology outlet row 21 stated divides for the two rows of and corresponding touching bridge 11, each ontology outlet row 21 be inserted into one it is corresponding Touch inside bridge 11, realize the ontology outlet row 21 with touch being electrically connected for bridge 11.

In the present invention, in the touching bridge cavity 131 with drawer chassis busbar 12 described in one, and it is every There are four the touching bridges 11 for clamping on a drawer chassis busbar 12.Two adjacent touching bridges 11 are separately fixed at different On the electrical connection section 122.By above-mentioned setting, touching bridge 11 is enabled more to be adequately exposed to be located at touching bridge cavity 131 Internal air-flow improves the heat dissipation effect of the touching bridge 11.

Claims (3)

1. a kind of drawout breaker, the breaker includes breaker body (2) and drawer chassis (1), the breaker Ontology (2) includes ontology outlet row (21), and the drawer chassis (1) includes drawer seat bottom frame (13), the drawer seat bottom frame (13) there is touching bridge cavity (131), drawer chassis busbar (12), the drawer are installed in the touching bridge cavity (131) Seat busbar (12) includes at least two busbar electrical connection sections (122), the clamping touching bridge on the busbar electrical connection section (122) (11) one end, the other end and the ontology outlet row (21) for touching bridge (11) are mating, it is characterised in that：Adjacent touching Bridge (11) is clamped on different electrical connection sections (122) and position offsets one from another.

2. a kind of drawout breaker according to claim 1, it is characterised in that the electrical connection section (122) is divided into One electrical connection section and the second electrical connection section；First electrical connection section and the second electrical connection section is arranged in parallel, adjacent touching bridge (11) it is clamped on the first electrical connection section and the second electrical connection section respectively.

3. a kind of drawout breaker according to claim 1, it is characterised in that the touching bridge (11) includes bracket (111), reed (112), support plate (113) and contact (114), the contact (114) have two groups, two groups of contact (114) phases To being arranged and be resisted against in the support plate (113)；The reed (112) is two pieces, and two pieces of reeds (112) are resisted against often The outside of group contact (114), and bracket (111) is then set in the outside of two pieces of reeds (112)；The support plate (113) is solid It is scheduled on the bracket (111).