CN201233971Y - Wedge shaped automatic locking clamp - Google Patents

Abstract

The utility model provides a wedge-shaped automatic locking wire clamp, which relates to a binding clip used for splicing conducting wire connection in power engineering. The wedge-shaped automatic locking wire clamp comprises a C-shaped element and a wedge, wherein wire grooves for connecting a conducting wire are formed on two sides of the C-shaped element, a zigzag-shaped self-locking retaining groove clipped into the locking tongue is formed at the upper part of the C-shaped element or the lower part of the wedge, an elastic sheet or spring is arranged at the other end of the locking tongue, and a screw is arranged at the other end of the elastic sheet or spring; the locking tongue is positioned into the C-shaped element or the locking hole of the wedge, a gripping positioning piece is positioned on one side of the C-shaped element through a rotating pin, an arc-shaped groove inserted into the end of the gripping positioning piece is formed on the other side of the C-shaped element, the opening distance between two sides of the C-shaped element d (mm) is determined by the formula that d is equal to kf, wherein f is the pressure (N) borne by the conducting wire in the arc-shaped groove, and k is the distance-to-force conversion ratio. The wedge-shaped automatic locking wire clamp solves the problem of how to master the installation of the wedge-shaped wire clamp, so that the wire clamp can reach the optimal gripping state. By adopting the wire clamp, the conducting wire required to be connected can be tightly gripped and reliably locked. Furthermore, the wire clamp can be used repeatedly.

Description

Wedge shape automatic locking principal vertical line folder

Technical field

The utility model relates to a kind of power engineering binding clip that lead connects that continues that is used for.

Background technology

Having locking wire clamp that the C shape element, voussoir piece of spring function constitute has been widely used in circuit and has continued.As the applicant patent " wedge shape automatic locking principal vertical line folder " (Chinese patent 200620096465.2) is arranged, constitute by C shape element, chock, there is the wire casing that connects lead on C shape element both sides, the zigzag self-locking back stop slot that snaps in the locking tongue is arranged at C shape element top or chock bottom, the locking tongue other end has shell fragment or spring, the other end of shell fragment or spring has screw, and the locking tongue is arranged in the locking hole of C shape element or chock.For guaranteeing that the locking tongue accurately snaps in the zigzag self-locking back stop slot, on C shape element, the chock witness marker line is arranged, when two markings positions coincide, represent that promptly the locking tongue accurately snaps in the zigzag self-locking back stop slot.

The operation principle that C shape element wire clamp is arranged is to utilize voussoir to travel forward in C shape element to produce the power of oppressing both sides wire casing inside conductor, make C shape element produce elastic deformation, thereby the lead that needs to connect of holding with a firm grip makes it reliable contact.Simultaneously, be equipped with lockable mechanism, avoid metal because of expanding with heat and contract with cold or,, under the effect of the mechanical force that overhead wire windward lotus produces etc., voussoir being withdrawed from from C shape element as the electric power that sudden short circuit produces in external force.

Therefore the reliability of wedge clamp mainly is used for guaranteeing by the grip of C shape element and the retaining of lockable mechanism.Wherein the grip of C shape element can be determined with method of testing, but how to grasp the installation wedge clamp, makes it can reach best grip state, is a problem that is worth discussion.

Summary of the invention

The purpose of this utility model is to press from both sides existing problem at existing wedge-lock principal vertical line, aims to provide a kind of can closely holding with a firm grip and needs the lead of connection, and reliable locking, repeatedly used wedge shape automatic locking principal vertical line folder.

The implementation of the utility model purpose is; Wedge shaped automatic locking clamp; There is the wire casing that connects lead on C shape element both sides; The zigzag self-locking back stop slot that snaps in the locking tongue is arranged at C shape element top or voussoir bottom; The locking tongue other end has shell fragment or spring; The other end of shell fragment or spring has hold-down screw or control screw; The locking tongue is arranged in the locking hole of C shape element or voussoir; The grip spacer is positioned at C shape element on one side by rotational pin; C shape element another side has the deep-slotted chip breaker that inserts grip spacer termination

The extended distance d (mm) on C shape element both sides is determined by following formula:

d＝kf

In the formula: the pressure that f bears for the deep-slotted chip breaker inside conductor (N)

K is distance and power conversion coefficient.

How the utility model grasps the installation wedge clamp if having solved, make its problem that can reach best grip state, adopts the utility model, and can closely hold with a firm grip needs the lead of connection, and reliable locking.The utility model can use repeatedly.

Description of drawings

Fig. 1 is that the grip spacer is at C shape element the utility model contour structures schematic diagram on one side

Fig. 2 sticks into the utility model contour structures schematic diagram of deep-slotted chip breaker for grip spacer termination

Fig. 3 is the extended distance d on C shape element both sides and the graph of a relation of the pressure f that the deep-slotted chip breaker inside conductor bears

Embodiment

With reference to Fig. 1,2, the utility model is made of C shape element 1, voussoir 5, there is the wire casing that connects lead 4 on C shape element both sides, the zigzag self-locking back stop slot that snaps in the locking tongue is arranged at C shape element top or voussoir bottom, the locking tongue other end has shell fragment or spring, and the other end of shell fragment or spring has control screw 6, and the locking tongue is arranged in the locking hole of C shape element or voussoir, grip spacer 3 is positioned at C shape element on one side by rotational pin 2, and C shape element another side has the deep-slotted chip breaker 7 that inserts grip spacer termination.

Judging whether locking tongue of the present utility model accurately snaps in the zigzag self-locking back stop slot, is not to set the bit flag line on C shape element, voussoir, when two markings positions coincide, represents promptly whether the locking tongue accurately snaps in the zigzag self-locking back stop slot.But be provided with grip spacer 3.

During with the utility model locking lead, rotation grip spacer 3 makes the termination of grip spacer aim at deep-slotted chip breaker 7, knocks voussoir 5 afterbodys, makes the termination of grip spacer insert (see figure 2) in the deep-slotted chip breaker 7, lead reliably can be locked.

During dismounting, the locking tongue that turns clockwise control screw 6 is mentioned the locking tongue, oppositely knocks voussoir 5, and voussoir is withdrawed from, and inhour rotation locking tongue control screw 6 puts down the locking tongue, and is promptly reusable.

How the utility model grasps the installation wedge clamp if having solved, make it can reach best grip state.Narrate above, the grip of C shape element makes C shape element produce elastic deformation from the pressure to both sides wire casing inside conductor in the wedge block movement process, and not enough as the pressure that produces, then elastic module is not enough, and grip is just less than normal, and it is just unreliable that lead connects; Otherwise excessive as the pressure that produces, then C shape element produces expendable mechanical deformation, and grip will be hindered mistake.Therefore the grip of C shape element can reflect that in other words, the variation of C shape element opening size can reflect the size of grip with the elastic module of C shape element.The applicant confirms through handgrip exercise and measuring contact resistance, and the deformation quantity of C shape element opening size is when a certain amount of, and grip is less than normal, and contact resistance is bigger than normal; After a certain amount of, elastic deformation becomes expendable mechanical deformation gradually, and grip is also hindered mistake thereupon.

According to above-mentioned test, the applicant has determined that the extended distance d (mm) on C shape element both sides determines that by d=kf the pressure that f bears for the deep-slotted chip breaker inside conductor in the formula (N), k are distance and power conversion coefficient.And be provided with the grip spacer.In installation process, the lead in the C shape element wire casing is pushed by voussoir, makes C shape element produce elastic deformation, when the extended distance d on C shape element both sides reached set point, inserted in the deep-slotted chip breaker 7, at this moment the termination of grip spacer, be in place, the grip of C shape element is an optimum value.

Claims (1)

1, wedge shape automatic locking principal vertical line folder, there is the wire casing that connects lead on C shape element both sides, the zigzag self-locking back stop slot that snaps in the locking tongue is arranged at C shape element top or voussoir bottom, the locking tongue other end has shell fragment or spring, the other end of shell fragment or spring has hold-down screw or control screw, and the locking tongue is arranged in the locking hole of C shape element or voussoir, it is characterized in that the grip spacer is positioned at C shape element on one side by rotational pin, C shape element another side has the deep-slotted chip breaker that inserts grip spacer termination

The extended distance d (mm) on C shape element both sides is determined by following formula:

d＝kf

In the formula: the pressure that f bears for the deep-slotted chip breaker inside conductor (N)

K is distance and power conversion coefficient.

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