CN202259076U - Electrical connection structure for withdrawable circuit breaker - Google Patents

Abstract

The utility model relates to an electrical connection structure for a withdrawable circuit breaker. The structure comprises at least two pairs of contact chips which are arranged in pairs. The rear end of each contact chip is provided with a hole; the hole at the rear end of each contact chip and an elastic plate passing through the hole are hinged on a mounting hole of a part of a bus bar through a connecting pin to form a contact chip group; the elastic plates are used for providing contact pressure between the contact chips and the bus bar; a nip is formed at the front end of one contact chip group; a leaf spring is arranged on the outer lateral surface of each nip; the nips are connected with a slotting tool; and the leaf springs are used for providing contact pressure between the contact chip groups and the slotting tool. The nips at the rear ends of one pair of contact chips of the electrical connection structure disclosed by the utility model is in accurate surface contact with the bus bar. The electrical connection structure has the advantages of good conductivity and the like.

Description

The electric connection structure that is used for withdrawable circuit breaker

Technical field

The utility model relates to a kind of electric connection structure that is used to be electrically connected, and is specially adapted to withdrawable circuit breaker, belongs to electric field.

Technical background

Being electrically connected between withdrawable frame circuit breaker body and the drawer is through the smoking, insert and realize of conductive structure, this contact is usually by a busbar, a slotting tool with can the structure that realize between busbar and the slotting tool being electrically connected be realized.Generally speaking, busbar is installed on the drawer, and the one of which end is connected with bus-bar in the distribution loop, and the other end is connected with electric connection structure with drawer; And slotting tool is installed on the body of circuit breaker, and the one of which end is connected with the inner conductive structure of circuit breaker, and the other end is connected with electric connection structure with drawer, thereby realizes the conductive structure of breaker body inside and the connection between the bus-bar in the distribution loop.

From the above, drawer is the bus-bar that connects in intrinsic conductive structure of withdrawable circuit breaker and the distribution loop with the effect of electric connection structure.In addition; The body of withdrawable circuit breaker need plug in drawer; The conducting system of body can not adopt modes such as welding or bolted to be connected with bus-bar; And oxidation all possibly take place in the used metal of electric conductor in air, and conductive structure to bear electric current through the time electric repulsion, so adopt elastic construction to come the electric connection structure between body and the drawer is produced the syndeton mode that certain pressure is undoubtedly a kind of optimum.

According to above-mentioned requirement, confirm that the drawer type electric connection structure that withdrawable circuit breaker is used should have following characteristics:

1. this structure can the load-bearing breaker predetermined electric current;

2. slotting tool is inserted easily and extract out to realize being connected and separating of circuit breaker electric syndeton;

With being connected of slotting tool in certain pressure should be arranged so that it is cracked and make contact resistance minimum to make electric conductor be used for the oxide layer on surface of coupling part;

4. from the conforming as far as possible consideration of parts of circuit breaker design, the design of this electric connection structure seriation as much as possible is so that processing cost is minimum;

5. the error in the circuit breaker manufacture process makes the body of circuit breaker occur deviation when getting into drawer unavoidably; Possibly make the slotting tool of body not aim at the drawer conducting system according to design attitude; At this time just need the drawer conducting system can allow this deviation; Still keep good being electrically connected with slotting tool, promptly this conducting system should have certain centering capacity.

The utility model content

In view of above-mentioned, the utility model provides a kind of electric connection structure that is used for withdrawable circuit breaker, it can reach above-mentioned to the body of withdrawable circuit breaker and the requirement of the electric connection structure between the drawout chassis.

The purpose of the utility model realizes through following technical scheme:

A kind of electric connection structure that is used for withdrawable circuit breaker comprises that at least one is the contact chip group of U font, and each contact chip group is made up of through connecting pin is hinged two pairs of contact chips; Between connecting pin and contact chip; Also have an elastic component, be used to provide the contact pressure between the contact chip and first busbar, the lateral surface of each contact chip group is installed the sheet spring that is used to provide the contact pressure between contact group and the slotting tool; The outside of the sheet spring frame that is fixed limits; The contact chip group also comprises at least one first busbar, and first busbar is placed in the folder mouth of every pair of contact chip rear end formation, and is hinged through described connecting pin and contact chip.

Further:

Said first busbar is installed on second busbar.

Place supporting bracket in the groove between described contact chip inboard fluted, the two pairs of contact chips.

The said contact chip group outside also is equipped with a fixed frame with two stomidiums.

The two ends of described supporting bracket are placed in two stomidiums of fixed frame.

The utility model is provided with an elastic component between the folder mouth and busbar of a pair of contact chip rear end, this elastic component has guaranteed between the contact chip and first busbar certain pressure is arranged, thereby has guaranteed that first busbar and contact chip are that accurate face contacts.

The utlity model has advantage such as conduct electricity very well.

Description of drawings

Fig. 1 is the structural representation of a contact chip;

Fig. 2 is that two contact chips are installed back formation contact chip group relatively;

Fig. 3 is the sketch map of a pair of contact chip rear end folder mouth;

Fig. 4 is a leaf spring and crack sketch map;

Fig. 5 is the front view of electric connection structure;

Fig. 6 is an electric connection structure matching relationship sketch map;

Fig. 7 is whole assembling effect sketch map.

Among the figure: 1. contact chip; 2. pin; 3. flexure strip; 4. first busbar; 5. the contact chip front end presss from both sides mouth; 6. the hole on the pressing plate; 7. second busbar; 8. contact chip groove; 9. fixed frame; 10. leaf spring; 11. supporting bracket; 12. the hole of fixed frame; 13. contact chip rear end Jia Kou; 14. crack; 15. pressing plate; 16. screw; 17. screwed hole; 18. groove.

Embodiment

The utility model relates to a kind of electric connection structure that is used for withdrawable circuit breaker, comprises that at least one is the contact chip group of U font, and each contact chip group is made up of through connecting pin is hinged two pairs of contact chips; Between connecting pin and contact chip; Also have an elastic component, be used to provide the contact pressure between the contact chip and first busbar, the lateral surface of each contact chip group is installed the sheet spring that is used to provide the contact pressure between contact group and the slotting tool; The outside of the sheet spring frame that is fixed limits; The contact chip group also comprises at least one first busbar, and first busbar is placed in the folder mouth of every pair of contact chip rear end formation, and is hinged through described connecting pin and contact chip.

Said first busbar is installed on second busbar.

Place supporting bracket in the groove between described contact chip inboard fluted, the two pairs of contact chips.

The said contact chip group outside also is equipped with a fixed frame with two stomidiums.

The two ends of described supporting bracket are placed in two stomidiums of fixed frame.

Specify below in conjunction with accompanying drawing.

Like Fig. 1, shown in Figure 2; Two pairs of contact chips 1 are installed relatively; First busbar 4 is placed in the folder mouth 13 of two pairs of contact chip rear ends, uses pin 2 to rivet, and between the outside of pin 2 and contact chip 1, flexure strip 3 is installed; Flexure strip 3 makes between the contact chip 1 and first busbar 4 and produces thrust, forms the contact chip group of 1 U font.

In the contact chip group of a U font shown in Figure 3, its front end forms folder mouth 5, and the contact chip inboard has groove 8.

As shown in Figure 4, leaf spring 10 is the sheet body structure, and its front end has crack in a row 14 equably, forms the elasticity fingertip of many disjunctors.

Shown in Figure 5 is integrally-built sketch map: supporting bracket 11 is arranged in two stomidiums 12 of contact chip groove 8 and fixed frame 9, because the effect of leaf spring 10 makes contact chip groove 8 produce compressed deformation, groove 8 both sides is attached on the supporting bracket 11.

As shown in Figure 6, first busbar 4 places in the groove 18 of second busbar 7, pushes down the upper end of first busbar 4 with pressing plate 15, is spirally connected with screw 17 through the hole 6 that screw 16 is passed on the pressing plate 15, and first busbar 4 is fixed on second busbar 7.

What need statement is; The foregoing description only is used for the utility model is described but not the utility model is limited; Therefore; For a person skilled in the art, under the situation that does not deviate from the utility model spirit and scope, it is carried out various conspicuous changes, all should be within the protection range of the utility model.

Claims (5)

1. electric connection structure that is used for withdrawable circuit breaker is characterized in that comprising:

At least one is the contact chip group of U font, and each contact chip group is made up of through connecting pin is hinged two pairs of contact chips, between connecting pin and contact chip, also has an elastic component;

The lateral surface of each contact chip group is installed the sheet spring that is used to provide the contact pressure between contact group and the slotting tool;

Said contact chip group also comprises at least one first busbar, and first busbar is placed in the folder mouth of every pair of contact chip rear end formation, and is hinged through described connecting pin and contact chip.

2. the electric connection structure that is used for withdrawable circuit breaker as claimed in claim 1 is characterized in that:

Said first busbar is installed on second busbar.

3. the electric connection structure that is used for withdrawable circuit breaker as claimed in claim 1 is characterized in that:

Place supporting bracket in the groove between described contact chip inboard fluted, the two pairs of contact chips.

4. the electric connection structure that is used for withdrawable circuit breaker as claimed in claim 3 is characterized in that:

The said contact chip group outside also is equipped with a fixed frame with two stomidiums.

5. the electric connection structure that is used for withdrawable two stomidium circuit breakers as claimed in claim 4 is characterized in that:

The two ends of described supporting bracket are placed in two stomidiums of fixed frame.

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