WO2019169752A1

WO2019169752A1 - Combined outlet device

Info

Publication number: WO2019169752A1
Application number: PCT/CN2018/088956
Authority: WO
Inventors: 朱鸿; 杨全兵; 戴罡; 仲鹏峰; 蔡君
Original assignee: 南京大全电气研究院有限公司; 大全集团有限公司; 南京大全电气有限公司
Priority date: 2018-03-09
Filing date: 2018-05-30
Publication date: 2019-09-12
Also published as: CN110247221A

Abstract

A combined outlet device, which belongs to the field of low-voltage power distribution and control, comprises a moving contact assembly (3) and a fixed contact assembly (4), and the fixed contact assembly comprises a contact (11) and a second conductor; the contact comprises two contact pieces (12), wherein the two contact pieces are symmetrically arranged by taking a fixing pin (14) as the center, thus forming a first open end in which one end is for being inserted in a first conductor and a second open end in which the other end is inserted in the second conductor; the two contact pieces achieve open-close clamping by means of an elastic clamping device, and protrusions (15) arranged opposite to each other are disposed at inner sides of the contact pieces near the first open end, such that an inserting end forms an opening (16) to be inserted; the moving contact assembly comprises a pre-tensioning device and the first conductor; and both the moving contact assembly and the fixed contact assembly are relatively movable, such that the contacts and the first conductor touch or separate. The combined and detachable outlet device is easy to install, and when the contacts are inserted in copper bars in a drawer, the contacts are guaranteed to not wear out, and the loss of energy is reduced.

Description

Combined outlet device

Technical field

The invention belongs to the field of low voltage power distribution and control, and in particular relates to a combined outlet device.

Background technique

In the field of low-voltage power distribution and control, the drawer type switchgear is a large-scale equipment, and the quality of the main circuit connector of the switchgear plays a decisive role in the safe and reliable operation of the switchgear, and the main circuit connector Whether the contact contact is reliable or not is an important indicator to measure the quality of the connector. It determines whether the drawer can withstand the impact of the motor starting current when the drawer is running, and whether the temperature rise is high when the load is running at full load.

The outlet device is connected to the outlet busbar in the low-voltage cabinet through its outlet row to derive the low-voltage cabinet current. The quality of the work is directly related to the performance and reliability of the electrical equipment.

In the prior art, the outlet device cannot be disassembled for post-maintenance after being fixed in the low-voltage cabinet. In addition, the contacts of the contact unit in the outlet device are directly inserted into the outlet row, which is easy to cause contact wear. When the drawer runs through current, the temperature rise between the contact and the conductor is high, causing corresponding electrical loss.

Summary of the invention

It is an object of the present invention to provide a combined, detachable, contactless, wear-free, modular outlet device.

Specifically, the present invention is implemented by the following technical solutions: including a moving contact assembly and a static contact assembly;

The static contact assembly comprises a contact and a second conductor; the contact comprises two contact pieces, the two contact pieces are symmetrically arranged around the fixing pin, forming a first open end for inserting with the first conductor, and the other end a second open end that is inserted into the second conductor, the two contact pieces are clampably clamped by the elastic clamping device, and the inner side of the contact piece near the first open end has opposite protrusions, so that the plug end forms a pre-form Plug the opening.

The moving contact assembly includes a pretensioning device and a first conductor;

Both the moving contact assembly and the stationary contact assembly are relatively movable to contact or separate the contacts from the first conductor.

It can be understood that the pre-tensioning opening distance of the static contact assembly is smaller than the pre-tensioning thickness of the moving contact assembly, the contact slides, and the moving contact assembly is first passed when the first conductor of the moving contact assembly is not contacted. The pre-tensioning separates the contacts from the sides such that the contacts ultimately make frictionless contact with the first conductor.

Further, the pretensioning device is pre-tensioned.

Further, the elastic clamping device comprises a fixing frame and an elastic piece, a first protruding column is arranged outside the contact piece near the first open end, and a second protruding column is arranged outside the contact piece near the second open end, and the elastic piece is abutted Connected between the first stud and the second stud and clamped by the fixing bracket.

Further, the movable contact assembly includes a contact box front insert and a contact box rear insert;

The front cover of the contact box includes a panel portion and a plug portion, and the plug portion is provided with a through groove extending up and down and extending to the rear edge of the plug portion, and a side surface of the plug portion is provided with a first fixing hole;

The rear cover of the contact box comprises a panel portion and a plug portion, and the upper side and the lower side of the plug portion are oppositely provided with a groove extending to the rear edge of the plug portion, and the upper and lower grooves are matched with each other to form a limit for the conductor and used a second fixing hole corresponding to the position of the first fixing hole of the front plug of the contact box is further disposed on the sliding portion through which the conductor passes;

A fastener is passed through the first fixing hole, the second fixing hole and the first conductor to realize a fixed connection of the contact box front insert, the contact box rear insert and the first conductor.

Further, the front end of the through groove is further provided with a card slot for matching the shape of the front end of the pretensioning device for limiting the pretensioning device.

Further, the static contact assembly includes a contact box front insert and a contact box rear insert;

The front insert of the contact box comprises a panel portion and a plug portion. The plug portion is provided with a through slot extending up and down and extending to the rear edge of the plug portion. The side of the plug portion is provided with a first fixing hole, and the two sides of the through slot are further The third fixing hole corresponding to the upper and lower sides is disposed, and the third fixing hole and the fixing pin cooperate with each other to realize the rotation limit of the contact;

The rear cover of the contact box comprises a panel portion and a plug portion, and the upper side and the lower side of the plug portion are oppositely provided with a groove extending to the rear edge of the plug portion, and the upper and lower grooves are matched with each other to form a limit for the conductor and used a second fixing hole corresponding to the position of the first fixing hole of the front plug of the contact box;

A fastener is inserted through the first fixing hole, the second fixing hole and the second conductor to realize a fixed connection of the front box of the contact box, the rear insert of the contact box, and the second conductor.

Further, a slot is further disposed behind the panel portion of the front plug of the contact box, and the panel portion of the rear plug of the contact box is provided with a 檐 insert protruding forward, and the 檐 insert is opposite to the slot on the front plug of the contact box. adaptation.

Further, a guard plate is further disposed at the entrance of the chute, so that the chute inlet has a rectangular shape adapted to the outer shape of the conductor, and the second fixing hole is disposed on the guard plate.

Further, the multi-level contacts are superimposed into a contact assembly.

It can be understood that various current level contact assemblies can be flexibly combined according to the magnitude of the current.

Further, one end of the contact or contact assembly is hinged to the stationary contact assembly.

The beneficial effects of the present invention are as follows: The combined outlet device of the present invention is convenient to install, and has no wear on the contacts, reduces energy loss and failure rate, and improves device service life and reliability.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the entire structure of the present invention.

Figure 2 is a state diagram of the present invention mounted on a sheet metal member.

3 is a left side view showing the overall structure of the front insert of the contact box of the present invention.

4 is a right side view showing the overall structure of the front insert of the contact box of the present invention.

Fig. 5 is a left side view showing the overall structure of the rear insert of the contact box of the present invention.

Figure 6 is a right side elevational view of the overall structure of the rear insert of the contact box of the present invention.

Figure 7 is a schematic view of the pre-tensioned structure of the present invention.

Figure 8 is a schematic view of the structure of the contact of the present invention.

Figure 9 is a schematic view showing the structure of the contact shell of the present invention.

Figure 10 is a schematic view showing the unconnected state of the present invention.

Figure 11 is a schematic view showing the state of connection of the present invention.

Reference numerals in the figure: 1-first copper row, 2-second copper row, 3-moving contact assembly, 4-static contact assembly, 5-contact box front insert, 6-contact box rear insert, 7 - contact assembly, 8-four fixing holes, 9-fixing pin, 10-pretensioning, 11-contact, 12-contact, 13-contact housing, 14-fixing pin, 15-bump, 16 - pre-plugged opening, 17-card slot, 18-slot, 19-station, 20-elastic, 21-first stud, 22-second stud, 23-slot, 24-pin, 25-first fixing hole, 26-second fixing hole, 27-third fixing hole, 28-sheet metal piece, 29-guard plate.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments and with reference to the accompanying drawings.

Example 1:

In one embodiment of the present invention, the first conductor in the embodiment is specifically a copper row in the drawer in the switch cabinet, and the second conductor in the embodiment is specifically a copper busbar outside the drawer in the switch cabinet. As shown in FIG. 1 , it is a combined outlet device, including a copper row in a drawer (hereinafter collectively referred to as a first copper row 1 ) and a copper tube outside the drawer (hereinafter collectively referred to as a second copper row 2 ), a moving contact assembly 3 and a static The contact assembly 4; FIG. 2 is a view showing a state of use of the combined cable outlet device of the present invention mounted on the sheet metal member 28.

The structure of the movable contact assembly 3 is as shown in FIGS. 1 and 2, and includes a contact box front insert 5 and a contact box rear insert 6.

The structure of the front box insert 5 of the contact box is as shown in FIG. 3 and FIG. 4, and includes a front panel portion and a rear plug portion. In the state of use, the plug portion is installed through the sheet metal member 28. The rear of the hole is located on the rear side of the sheet metal member 28, and the panel portion abuts against the front side of the sheet metal member. The insertion portion is provided with a through groove extending up and down and extending to the rear edge of the insertion portion, and the front end of the through groove is provided with a card slot 17 for engaging the pretensioning device with the shape of the front end of the pretensioning device, and the contact hole A slot 23 as shown in Fig. 4 is further provided behind the panel portion of the front card insert 5. The side of the plug portion of the front box insert 5 is provided with a first fixing hole 25 as shown in FIG.

The structure of the contact box rear insert 6 is as shown in FIG. 5 and FIG. 6 , and includes a front panel portion and a rear plug portion. The upper and lower positions of the panel portion are respectively provided with a forward protruding as shown in FIG. 5 . The cymbal insert 24 is adapted to the slot 23 on the front insert 5 of the contact box, and the upper side and the lower side of the plug portion are oppositely provided with grooves extending to the trailing edge of the plug portion, upper and lower The grooves cooperate to form a chute 18 that limits the copper row and is used to pass the copper row. At the entrance of the chute 18, a shield 29 as shown in FIG. 6 may be further disposed, so that the inlet of the chute 18 has a rectangular shape adapted to the shape of the copper strip, and the shield further defines the position of the copper row so that the copper row is The penetration process is more stable and reliable. A second fixing hole 26 as shown in FIG. 6 is also provided on the shield. The second fixing hole 26 corresponds to the position of the first fixing hole 25 of the contact box front insert 5. In the state of use, the contact box rear insert 6 is sleeved outside the plug portion of the front box insert 5 of the contact box, the panel portion abuts against the rear side of the sheet metal member, and the cymbal insert 24 is limited to the slot 23, tightly The fixing member (for example, the fixing pin) passes through the first fixing hole 25, the second fixing hole 26 and the copper row to realize the fixed connection of the contact box front insert 5, the contact box rear insert 6 and the copper row.

The structure of the static contact assembly 4 is as shown in FIG. 1 and FIG. 2, and its structure is similar to that of the movable contact assembly 3, including the contact box front insert 5 and the contact box rear insert 6. The difference is: (1) since the fixed contact assembly 4 does not need to fix the pretensioning device, the front end of the slot of the plug portion of the contact box front insert 5 does not need to be provided with a card for limiting the pretensioning device. a slot 17; (2) since the contact assembly 7 is required to be connected to the fixed contact assembly 4, a third fixing hole 27 corresponding to the upper and lower sides is further disposed on both sides of the through slot of the plug portion of the front plug 5 of the contact box. The three fixing holes 27 and the fixing pin 9 cooperate with each other to realize the rotation limit of the contact assembly 7, that is, the contact assembly 7 is opened and closed with the fixing pin 9 as a center of rotation.

In order to enhance the versatility of the contact assembly, the present embodiment preferably sets the movable contact assembly 3 and the fixed contact assembly 4 to the same structure, that is, the insertion portion of the contact box front insert 5 of the movable contact assembly 3 is also A third fixing hole 27 is provided, and the front end of the slot of the plug portion of the contact box front insert 5 in the fixed contact assembly 4 is also provided with a card slot 17 for limiting the pretensioning device. Thus, the contact box front insert 5 and the contact box rear insert 6 manufactured by only one set of molds can simultaneously adapt to the structural requirements of the movable contact assembly 3 and the static contact assembly 4, and can be selected according to actual needs.

As shown in FIG. 1 and FIG. 2, the movable contact assembly of the present invention is used for fixing, connecting and mounting the first copper strip 1 and the pretensioning device; the static contact assembly is used for the second copper strip 2, the contact assembly 7 fixed, connected and installed. among them:

The pretensioning device may preferably be a pretensioning 10 as shown in FIG. The structure of the pretensioning rib 10 is as shown in FIG. 7, and includes a plurality of arcuate sheet-like projections parallel to each other, and the number of the arcuate sheet-like projections is determined according to the number of contacts included in the contact assembly 7. The two ends of the pre-tensioning rib 10 are also respectively provided with outwardly convex bosses. When the pre-tensioning 10 is limited to the slot 17, the boss abuts against the rear edge of the card slot 17, thereby further limiting the position of the pre-tensioning 10. The pre-tensioning is a detachable structure for later maintenance.

It should be noted that the contact manner between the contact and the pretensioning device in the present invention is not limited to the exemplary sliding contact manner in the above embodiment, and may be other contact methods as long as the object of the present invention can be achieved. For example, the contacts can also be plugged in a rolling friction manner. When adopting the rolling plug structure: the pre-tensioning device can be set as a rolling pre-tensioning device with rolling elements such as balls or rollers; the convex portion of the contact can also be set with rolling parts such as balls or rollers. Rolling structure. The rolling plug structure allows the pre-tensioning device and the contact to be inserted by rolling friction, which can effectively reduce the friction of the plugged parts and reduce the wear of the contacts, thereby improving the service life of the product.

The structure of the contact assembly 7 is as shown in FIG. 8, and includes at least a primary contact 11 for flexibly combining a plurality of current level contact assemblies according to the magnitude of the current. The contact 11 includes two contact pieces 12, and the two contact pieces 12 are symmetrically disposed around the fixing pin 14 to form a first open end for inserting with the first copper strip 1 and the other end and the second copper. The second open end of the row 2 is inserted, the two contact pieces 3 are clampably clamped by the elastic clamping device, and the inner side of the contact piece 3 near the first open end has oppositely disposed protrusions 15 The plug end forms a pre-plug opening 16.

The structure of the elastic clamping device is as shown in FIG. 8 , and includes a fixing frame 19 and an elastic piece 20 . The first protruding post 21 is disposed outside the contact piece 12 adjacent to the first open end, and the outside of the contact piece 12 adjacent to the second open end is disposed. The second protrusion 22 is disposed between the first protrusion 21 and the second protrusion 22 and clamped by the fixing frame 19.

In order to effectively protect the contact piece, the present embodiment is further provided with a contact housing 13 which is sleeved on the contact piece 12 as shown in FIG. The contact housing 13 is sleeved on the contact piece 12, and the fourth fixing hole 8 is disposed on the side of the contact housing 13 near the second open end. In use, the fixing pin 9 passes through the third part of the plug-in portion of the front plug 5 of the contact box. The fixing hole 27 and the fourth fixing hole 8 are provided so that the contact 11 can be opened and closed with the fixing pin 9 as a center of rotation. The plurality of stages of the contacts 11 are superimposed into a contact assembly 7.

The working principle of the contacts is shown in Figures 10 and 11. The size of the pre-insertion opening 16 on the contact 11 is smaller than the thickness of the arcuate sheet-like protrusion on the pre-tensioning 10 in the movable contact assembly 3 corresponding thereto, and the movement of the cabinet moves the moving contact assembly 3 to the static direction. The direction of the contact assembly 4 is moved or moved away from the stationary contact assembly 4. When the movable contact assembly 3 moves in the direction of the fixed contact assembly 4, the contact is first passed through the pre-tensioning 10 in the movable contact assembly 3 when the contact does not contact the first copper bar 1 of the movable contact assembly 3. The 12 is separated from the two sides such that the contact 12 and the first copper strip 1 are finally brought into frictionless contact.

The use process of the present invention is as follows:

1. The movable contact assembly 3 is mounted: the insertion portion of the front box insert 5 of the contact box is passed through the mounting hole on the sheet metal member 28, so that the insertion portion is located at the rear side of the sheet metal member 28, and the panel portion is abutted against the 钣The front side of the gold member 28; the contact box rear insert 6 is sleeved from the rear side outside the plug portion of the contact box front insert 5, and the panel portion abuts against the rear side of the sheet metal member 28, and the 檐 insert 24 is limited Located in the slot 23, the first fixing hole 25 and the second fixing hole 26 are aligned, and the through slot of the contact box front insert 5 is aligned with the sliding slot 18 of the contact box rear insert 6; the pre-tensioning 10 is slid The slot 18 is inserted into the through hole; the first conductor 1 is inserted into the through hole from the rear of the plug portion along the chute 18, and the front end thereof pushes the pretensioning rib 10 to the position of the card slot 17 and abuts the pretensioning rib 10; Through the first fixing hole 25, the second fixing hole 26 and the first conductor 1, the fixed connection of the contact box front insert 5, the contact box rear insert 6 and the first conductor 1 is realized; meanwhile, the contact box front insert The panel portion of the fifth panel and the panel portion of the contact cartridge rear insert 6 cooperate to fix the movable contact assembly 3 to the sheet metal member 28.

2. The static contact assembly 4 is mounted: the insertion portion of the front box insert 5 of the contact box is passed through the mounting hole on the sheet metal member 28 such that the insertion portion is located on the rear side of the sheet metal member 28, and the panel portion is abutted against the crucible. a front side of the gold member 28; an end of the contact housing 13 including the fourth fixing hole 8 is inserted into the contact box front insert 5 from the front side, and the fourth fixing hole 8 and the contact box front insert 5 are inserted into the joint portion Corresponding to the position of the third fixing hole 27, the fixing pin 9 is passed through the third fixing hole 27 and the fourth fixing hole 8, so that the contact 11 can be opened and closed with the fixing pin 9 as a center of rotation; The contact box rear insert 6 is sleeved from the rear side of the plug-in portion of the contact box front insert 5, the panel portion abuts against the rear side of the sheet metal member 28, and the cymbal insert 24 is limited to the slot 23, first The fixing hole 25 and the second fixing hole 26 are aligned, and the through groove of the contact box front insert 5 is aligned with the chute 18 of the contact box rear insert 6; the second conductor 2 is inserted from the rear of the plug portion along the chute 18. a through hole; the fastener is passed through the first fixing hole 25, the second fixing hole 26 and the second conductor 2, and the fixed connection of the contact box front insert 5, the contact box rear insert 6 and the second conductor 2 is realized. . At the same time, the panel portion of the front plug 5 of the contact box and the panel portion of the rear insert 6 of the contact box cooperate to fix the fixed contact assembly 4 to the sheet metal member 28.

It should be noted that, in this embodiment, only the movement of the movable contact assembly 3 relative to the fixed contact assembly 4 is listed, but is not limited to this movement mode, the "moving contact assembly 3" and the "static contact assembly 4" The two technical terms are only used to distinguish, wherein "moving" and "static" are not used to limit the motion state of the assembly, and the movement of the fixed contact assembly 4 relative to the movable contact assembly 3 can also achieve the object of the present invention. Further, the conductor material in the present invention is not limited to the copper exemplified in the above embodiment, and may be aluminum, iron, or the like, as long as the purpose of electrical conduction can be achieved, and the conductor structure is not limited to the rectangular copper row structure exemplified in the above embodiment. As long as the installation requirements of the present invention can be achieved.

Although the invention has been disclosed above in the preferred embodiments, the embodiments are not intended to limit the invention. Any equivalent changes or modifications made without departing from the spirit and scope of the invention are also within the scope of the invention. Therefore, the scope of protection of the present invention should be defined by the content defined in the claims of the present application.

Claims

a combined outlet device, comprising: a moving contact assembly (3) and a static contact assembly (4);

The static contact assembly (4) includes a contact (11) and a second conductor; the contact (11) includes two contacts (12), and the two contacts (12) are fixed pins (14) a symmetrically disposed center, forming a first open end for inserting with the first conductor, and a second open end for inserting the other end with the second conductor, the two contacts (12) passing through the elastic clamping device The sleeve is clamped, and the inner side of the contact piece (12) adjacent to the first open end has opposite protrusions, so that the plug end forms a pre-plugging opening (16);

The moving contact assembly (3) includes a pretensioning device and a first conductor;

Both the movable contact assembly (3) and the fixed contact assembly (4) are relatively movable to contact or separate the contact (11) from the first conductor.
The combined cable outlet device of claim 1 wherein said pretensioning device is a pretensioning rib (10).
The combined cable outlet device according to claim 1, wherein the elastic clamping device comprises a fixing frame (19) and an elastic piece (20), and the outer side of the contact piece (12) adjacent to the first open end is provided with a first protruding post (21), a second protruding post (22) disposed on an outer side of the contact piece (12) adjacent to the second open end, the elastic piece (20) abutting the first protruding post (21) and the first Between the two studs (22) and clamped by the fixing frame (19).
The combined cable outlet device according to claim 1, wherein the movable contact assembly (3) comprises a contact box front insert (5) and a contact box rear insert (6);

The front cover insert (5) includes a panel portion and a plug portion, and the plug portion is provided with a through slot extending vertically and extending to a rear edge of the plug portion, and the side of the plug portion is provided with a first side a fixing hole (25);

The contact box rear insert (6) comprises a panel portion and a plug portion, and the upper side and the lower side of the plug portion are oppositely provided with a groove extending to the trailing edge of the plug portion, and the upper and lower grooves cooperate with each other. Forming a chute (18) for limiting the conductor and for passing the conductor, the plug portion further provided with a position corresponding to the position of the first fixing hole (25) of the front plug (5) of the contact box Second fixing hole (26);

Fastening of the contact box front insert (5), the contact box rear insert (6) and the first conductor by fasteners passing through the first fixing hole (25), the second fixing hole (26) and the first conductor connection.
The combined cable outlet device according to claim 4, wherein the front end of the through groove is further provided with a card slot (17) for matching the shape of the front end of the pretensioning device for limiting the pretensioning device.
The combined cable outlet device according to claim 1, wherein the static contact assembly (4) comprises a contact box front insert (5) and a contact box rear insert (6);

The front cover insert (5) includes a panel portion and a plug portion, and the plug portion is provided with a through slot extending vertically and extending to a rear edge of the plug portion, and the side of the plug portion is provided with a first side a fixing hole (25), a third fixing hole (27) corresponding to the upper and lower sides is further disposed on the two sides of the through groove, and the third fixing hole (27) and the fixing pin (9) cooperate with each other to realize the contact (11) Rotation limit;

The contact box rear insert (6) comprises a panel portion and a plug portion, and the upper side and the lower side of the plug portion are oppositely provided with a groove extending to the trailing edge of the plug portion, and the upper and lower grooves cooperate with each other. Forming a chute (18) for limiting the conductor and for passing the conductor, the plug portion further provided with a position corresponding to the first fixing hole (25) of the front insert (5) of the contact box Two fixing holes (26);

Fastening of the contact box front insert (5), the contact box rear insert (6) and the second conductor by fasteners passing through the first fixing hole (25), the second fixing hole (26) and the second conductor connection.
The combined cable outlet device according to claim 4 or 6, wherein a slot (23) is further arranged behind the panel portion of the front box insert (5), and the contact box rear insert (6) The panel portion is provided with a forwardly projecting jaw insert (24) which is adapted to the slot (23) on the contact box front insert (5).
The combined cable outlet device according to claim 4 or 6, characterized in that a guard plate (29) is further provided at the entrance of the chute (18), so that the inlet of the chute (18) is adapted to the shape of the conductor. A rectangular shape is provided, and the second fixing hole (26) is disposed on the shield (29).
The combined cable outlet device according to claim 1, characterized in that the plurality of stages of said contacts (11) are superimposed into a contact assembly (7).
A combined cable outlet device according to claim 1 or 9, characterized in that one end of the contact (11) or the contact assembly (7) is hinged to the stationary contact assembly (4).