CN216353929U

CN216353929U - Contact knife holder for fuse type isolating switch

Info

Publication number: CN216353929U
Application number: CN202122576114.9U
Authority: CN
Inventors: 李挺; 梁金星
Original assignee: Zhejiang Fritz Electric Technology Co ltd
Current assignee: Zhejiang Fritz Electric Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-19
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a contact knife holder for a fuse type isolating switch, which comprises a base, wherein abutting plates are oppositely arranged on the base, an insertion groove for inserting a contact knife is formed between the abutting plates at two sides, and the opening of the insertion groove is gradually reduced from one end close to the base to the direction far away from the base; and clamp springs are arranged between the abutting plates on the two sides, and two ends of each clamp spring are abutted against the side wall of the abutting plate, which is away from the insertion groove, of the adjacent abutting plate respectively. This application has ensured that touch the sword and can closely laminate with the conflict board, has strengthened the ability of the resistant plug deformation of conflict board, has prolonged the life's of conflict board effect.

Description

Contact knife holder for fuse type isolating switch

Technical Field

The utility model relates to the field of fuse type disconnecting switches, in particular to a contact knife holder for a fuse type disconnecting switch.

Background

The fuse type isolating switch is a fuse combined electrical appliance which combines a traditional fuse, an isolator and a switch into a whole, not only can be operated with load, but also has obvious current limiting characteristic and good selection characteristic, can realize the optimal protection of a circuit, and can be widely applied to a low-voltage distribution system. The fuse type disconnecting switch is used for line protection, so that the fuse type disconnecting switch not only has the characteristics of a fuse, but also has a better overcurrent protection effect, can be opened and closed under rated load, is very simple and convenient to put into operation again, and can realize a remote monitoring function in a low-voltage distribution network.

Fuse formula isolator among the correlation technique mainly includes the shell body, installs in the shell body to be used for playing the fuse body of protection to external circuit, is provided with on the fuse body to be used for with the contact sword of external circuit switch-on, still installs on the shell body and supplies respectively adjacent contact sword male contact blade holder. Contact blade seat one end is used for being connected with external circuit, inserts on the contact blade seat through the contact blade with on the fuse body, and fuse formula isolator has just accomplished the combined floodgate action this moment to the fuse body also will be successfully accessed in on external circuit.

To above-mentioned contact blade seat, the applicant thinks when touching the sword and inserting on the contact blade seat, only rely on the deformation power of touching blade seat self to carry out the centre gripping with touching the sword, and touch the sword at the in-process of frequent plug, touch the blade seat and can avoid the emergence deformation, in case the deformation volume of contact blade seat is too big, will directly lead to touching the blade seat and be difficult to closely laminate with touching the sword, finally influence the contact stability of contact blade seat and touch the sword.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the contact stability of a contact tool seat and a contact tool is easily poor in the process of frequently inserting and pulling the contact tool; the application provides a contact blade holder for a fuse type isolating switch.

A contact knife holder for a fuse type isolating switch comprises a base, wherein abutting plates are oppositely arranged on the base, an insertion groove for inserting a contact knife is formed between the abutting plates on two sides, and an opening of the insertion groove is gradually reduced from one end close to the base to the direction far away from the base; and clamp springs are arranged between the abutting plates on the two sides, and two ends of each clamp spring are abutted against the side wall of the abutting plate, which is away from the insertion groove, of the adjacent abutting plate respectively.

By adopting the technical scheme, because the opening of the insertion groove is gradually reduced from one end close to the base to the direction far away from the base, when the contact knife is inserted into the insertion groove, the contact knife pushes the abutting plates at the two sides to move towards the mutually separated direction, and the opening of the insertion groove is gradually opened; when the contact knife is completely inserted into the insertion groove, the contact knife can be tightly pressed in the insertion groove by the abutting plates on the two sides; thereby ensuring that the contact knife can be tightly attached to the touch plate, enhancing the plugging and pulling deformation resistance of the touch plate and prolonging the service life of the touch plate; when the contact knife is inserted into the insertion groove, the clamp springs arranged between the two side contact plates can apply pressure for overcoming self deformation to the contact plates, so that the service life of the contact plates can be further prolonged, and the contact knife can be more stably and firmly pressed by the contact plates.

Optionally, a guide block is arranged on the side wall of the contact plate far away from the base, and the guide block is bent towards the direction back to the opening of the insertion groove.

Through adopting above-mentioned technical scheme, when will touch the sword and insert to the inserting groove in, can play the effect of direction to touching the sword through the guide block that sets up on the conflict board to can guarantee to touch the sword and more smoothly must insert to the inserting groove in.

Optionally, a through separation groove is further formed in the contact plate, and the separation groove extends in the direction in which the contact blade is inserted into the insertion groove.

Through adopting above-mentioned technical scheme, the partition tank can separate into relatively independent two parts with the conflict board to when will touch the sword and insert to the inserting groove, guarantee to touch smooth deformation of board, ensure that the opening with the inserting groove that the sword can be more smooth struts.

Optionally, a clamping groove close to the clamp spring is formed in the touch panel, the clamp spring is inserted into the clamping groove, and the clamp spring and the inner side wall of the clamping groove are mutually abutted.

Through adopting above-mentioned technical scheme, block the jump ring in the draw-in groove of both sides to make jump ring and corresponding draw-in groove inside wall support tightly each other, can carry on spacingly with the jump ring at the effect of draw-in groove this moment, make the jump ring can be more stable and firm setting between both sides support the touch panel.

Optionally, a yielding groove is formed in the side wall of the contact plate, which is away from the insertion groove, and the end portions of the snap springs respectively abut against the inner side walls of the respective opposite yielding grooves.

By adopting the technical scheme, when the clamp spring is installed, the end parts of the clamp spring are abutted in the respective abdicating grooves, and the end parts of the clamp spring can be limited by the abdicating grooves, so that the end parts of the clamp spring can be more stably and firmly abutted on the abutting plates; when the touch plate deforms under the action of the touch knife, the end portion of the clamp spring is limited through the abdicating groove, and therefore the situation that the end portion of the clamp spring displaces can be prevented.

Optionally, the snap springs are at least provided with two groups, and the snap springs are symmetrically arranged on two sides of the abutting plate.

Through adopting above-mentioned technical scheme, set up the reset effect that the multiunit jump ring has further strengthened the touch panel to can further prolong the life of touch panel, ensure that the touch panel can closely laminate with the feeler tool.

Optionally, the base and the conflict board are formed with the through wires hole that supplies the cable to insert jointly, be provided with on the base with the communicating perforation of through wires hole.

By adopting the technical scheme, when the cable of the external circuit is connected with the base, the cable can be limited in the threading hole by inserting the cable into the threading hole through the base and the abutting plates on the two sides; and finally, the bolt is screwed in from the through hole, and the cable is tightly pressed on the inner side wall of the threading hole through the bolt, so that the connection work of the cable is completed, and the whole connection process is very convenient and fast.

Optionally, the base is further provided with extension ends symmetrically arranged on two sides of the threading hole, and the extension ends exceed the outer side wall of the base.

Through adopting above-mentioned technical scheme, when with the pedestal mounting on fuse formula isolator's shell body, through the extension end that will be located the base both sides and the inside wall laminating of shell body, just can carry on spacingly with the base under the effect of extension end, ensure that the base is stable and firm spacing in the shell body.

In summary, the present application includes at least one of the following beneficial technical effects:

the capacity of resisting plug deformation of the touch panel is enhanced, and the use time of the touch panel is prolonged; when the contact cutter is inserted into the insertion groove, the clamping spring arranged between the two side contact plates can apply pressure for overcoming self deformation to the contact plates, so that the service life of the contact plates can be further prolonged, and the contact cutter can be more stably and firmly pressed by the contact plates.

Drawings

Fig. 1 is a schematic view of the overall structure of the fuse type disconnecting switch mounted in the outer shell of the fuse type disconnecting switch according to the embodiment of the application.

Fig. 2 is a schematic overall structure diagram of the fuse contact blade in plug-in fit according to the embodiment of the application.

Fig. 3 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 4 is a partial structure schematic diagram of fig. 3 after the snap spring is hidden.

Description of reference numerals:

1. a base; 11. threading holes; 12. perforating; 13. an extension end; 2. a touch plate; 21. inserting grooves; 22. a guide block; 23. a separation tank; 24. a card slot; 25. a yielding groove; 3. and a clamp spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a contact knife holder for a fuse type isolating switch. Referring to fig. 1 and 2, the contact blade holder for the fuse type disconnecting switch comprises a base 1, two opposite contact plates 2 are integrally formed on the upper surface of the base 1, and the contact plates 2 on the two sides are obliquely arranged towards the direction close to each other. An inserting groove 21 for inserting the contact knife is formed between the abutting plates 2 at the two sides, and the opening of the inserting groove 21 is gradually reduced from one end close to the lower base 1 to the direction far away from the base 1.

As shown in fig. 3 and 4, the side wall of the abutting plate 2 away from the base 1 is integrally formed with a guide block 22, and the guide blocks 22 respectively located on the abutting plates 2 at two sides are bent toward the directions away from the openings of the inserting grooves 21. The contact plate 2 is further provided with a through separation groove 23, the separation groove 23 extends along the direction in which the contact knife is inserted into the insertion groove 21, and the separation groove 23 evenly separates the upper end of the contact plate 2 where the separation groove 23 is located into two mutually independent parts.

As shown in fig. 3 and 4, two sets of slots 24 close to the lower base 1 are disposed on the touch panel 2, and the slots 24 are symmetrically disposed on two sides of the touch panel 2. A clamp spring 3 used for extruding the contact plates 2 in the mutually approaching direction is arranged between the contact plates 2 at the two sides, and the clamp spring 3 is roughly in the shape of a semicircular ring with a notch. The clamp spring 3 is respectively pressed on the side wall of the two side contact plates 2 departing from the insertion groove 21 through the gap, the clamp spring 3 is provided with two groups in the embodiment, the clamp spring 3 is respectively inserted into the clamping grooves 24 of the two side contact plates 2 close to each other, and the clamp spring 3 is mutually abutted with the inner side walls of the clamping grooves 24 where the clamp spring 3 is respectively located. The outer side wall of the contact plate 2 departing from the insertion groove 21 is provided with two yielding grooves 25 respectively close to the adjacent clamp springs 3, and the end parts of the gaps of the clamp springs 3 are respectively abutted against the inner side walls of the corresponding yielding grooves 25.

As shown in fig. 3 and 4, the base 1 and the contact plates 2 on both sides form a threading hole 11 for inserting a cable, two through holes 12 communicated with the threading hole 11 are arranged on the base 1, the base 1 is penetrated through by the through holes 12, and the through holes 12 are used for screwing in a bolt and pressing the cable of the external circuit on the inner side wall of the threading hole 11. The base 1 is further integrally formed with extension ends 13 symmetrically arranged on two sides of the threading hole 11, and the extension ends 13 exceed the outer side walls of the respective adjacent bases 1.

The implementation principle of the contact blade holder for the fuse type isolating switch in the embodiment of the application is as follows:

because the opening of inserting groove 21 reduces from the one end that is close to base 1 to the direction of keeping away from base 1 gradually, when will touch the sword and insert in inserting groove 21, touch the sword and will promote the conflict board 2 of both sides and remove to the direction of mutual separation, the opening of inserting groove 21 will be strutted gradually this moment. When the contact knife is completely inserted into the insertion groove 21, the contact knife can be pressed in the insertion groove 21 by the abutting plates 2 on the two sides. Thereby ensured to touch the sword and can closely laminate with conflict board 2, strengthened the ability of conflict board 2 resistant plug deformation, prolonged conflict board 2's life. When the contact knife is inserted into the insertion groove 21, the clamp springs 3 arranged between the two side contact plates 2 can apply pressure for overcoming self deformation to the contact plates 2, so that the service life of the contact plates 2 can be further prolonged, and the contact knife is more stably and firmly pressed by the contact plates 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a fuse formula isolator is with touching blade holder, including base (1), be provided with relatively on base (1) and support touch panel (2), its characterized in that: an inserting groove (21) for inserting the contact knife is formed between the contact plates (2) on the two sides, and the opening of the inserting groove (21) is gradually reduced from one end close to the base (1) to the direction far away from the base (1); and clamp springs (3) are further arranged between the touch plates (2) on the two sides, and two ends of each clamp spring (3) are respectively abutted against the side wall of each adjacent touch plate (2) deviating from the insertion groove (21).

2. The contact blade holder for a fuse-type disconnecting switch according to claim 1, wherein: the side wall of the contact plate (2) far away from the base (1) is provided with a guide block (22), and the guide block (22) is bent towards the direction back to the opening of the insertion groove (21).

3. The contact blade holder for a fuse-type disconnecting switch according to claim 1, wherein: the contact plate (2) is further provided with a through separation groove (23), and the separation groove (23) extends along the direction in which the contact knife is inserted into the insertion groove (21).

4. The contact blade holder for a fuse-type disconnecting switch according to claim 1, wherein: a clamping groove (24) close to the clamp spring (3) is formed in the touch plate (2), the clamp spring (3) is inserted into the clamping groove (24), and the clamp spring (3) and the inner side wall of the clamping groove (24) are mutually abutted.

5. The contact blade holder for a fuse type disconnecting switch according to claim 4, wherein: the side wall of the contact plate (2) departing from the insertion groove (21) is provided with a yielding groove (25), and the end parts of the clamp springs (3) are respectively and tightly propped against the inner side walls of the corresponding yielding grooves (25).

6. The contact blade holder for a fuse type disconnecting switch according to claim 5, wherein: the clamp springs (3) are at least provided with two groups, and the clamp springs (3) are symmetrically arranged on two sides of the touch plate (2).

7. The contact blade holder for a fuse-type disconnecting switch according to claim 1, wherein: the base (1) and the touch plate (2) are jointly formed with a threading hole (11) for inserting a cable, and a through hole (12) communicated with the threading hole (11) is formed in the base (1).

8. The contact blade holder for a fusible disconnect switch of claim 7, wherein: the base (1) is further provided with extension ends (13) symmetrically arranged on two sides of the threading hole (11), and the extension ends (13) exceed the outer side wall of the base (1).