阅读说明：本技术 一种万能式框架断路器的触头系统新结构 (contact system new structure of universal frame circuit breaker ) 是由 陈炳新 刘廷良 陈奔 刘成国 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种万能式框架断路器的触头系统新结构,包括安装壳体,所述安装壳体内部左端包括有固定基座,且固定基座外侧固定连接有定位卡合块,所述定位卡合块内侧预留有卡合槽,所述安装壳体内部右端固定连接有底板,所述动触头通过触头弹簧与触头支持活动连接,所述底板上端固定连接有静触头,所述固定基座下端固定连接有支架,且支架外侧固定连接有压缩弹簧,所述压缩弹簧与母线一端相互连接,且母线通过压缩弹簧与支架活动连接。该万能式框架断路器的触头系统新结构,保证整体可以稳定的运行,且实现万能式断路器大大降低生产成本,改善加工工艺,达到绿色环保的要求,同时大大缩小空间降低生产成本,达到绿色环保要求。(The invention discloses a novel structure of a contact system of an universal frame circuit breaker, which comprises an installation shell, wherein the left end inside the installation shell comprises a fixed base, the outer side of the fixed base is fixedly connected with a positioning clamping block, a clamping groove is reserved on the inner side of the positioning clamping block, the right end inside the installation shell is fixedly connected with a bottom plate, a moving contact is movably connected with a contact support through a contact spring, the upper end of the bottom plate is fixedly connected with a fixed contact, the lower end of the fixed base is fixedly connected with a support, the outer side of the support is fixedly connected with a compression spring, the compression spring is mutually connected with one end of a bus, and the bus is movably connected with the support through the compression. This universal frame circuit breaker's contact system new construction guarantees whole operation that can be stable, and realizes universal circuit breaker greatly reduced manufacturing cost, improves processing technology, reaches green's requirement, reduces space reduction in production cost simultaneously greatly, reaches green requirement.)

1. the utility model provides a conventional frame circuit breaker's contact system new construction, includes installation casing (1), its characterized in that: the left end in the installation shell (1) comprises a fixed base (2), the outer side of the fixed base (2) is fixedly connected with a positioning clamping block (3), a clamping groove (4) is reserved in the inner side of the positioning clamping block (3), the right end in the installation shell (1) is fixedly connected with a bottom plate (5), the lower end in the bottom plate (5) is movably connected with a bus (6), the outer side of the bus (6) is movably connected with a connecting plate (7), the upper end of the connecting plate (7) is fixedly provided with a contact support (8), the contact support (8) is movably connected with the inner wall of the installation shell (1), the outer side of the contact support (8) is fixedly connected with a contact spring (9), the outer side of the contact spring (9) is fixedly connected with a movable contact (10), and the movable contact (10) is movably connected with the contact support (8) through the contact spring (, the fixed contact (11) is fixedly connected to the upper end of the bottom plate (5), the support (12) is fixedly connected to the lower end of the fixed base (2), a compression spring (13) is fixedly connected to the outer side of the support (12), the compression spring (13) is connected with one end of the bus (6) in an interconnecting mode, and the bus (6) is movably connected with the support (12) through the compression spring (13).

2. The new structure of contact system of universal frame circuit breaker as claimed in claim 1, wherein: the shape and size of the clamping groove (4) on the inner side of the positioning clamping block (3) are matched with the shape and size of the left end of the contact support (8), a clamping plate (14) is fixedly connected to the outer side of the contact support (8), and the clamping plate (14) is located on the outer sides of the contact spring (9) and the moving contact (10).

3. The new structure of contact system of universal frame circuit breaker as claimed in claim 2, wherein: first locating hole (15) have been seted up to generating line (6) inside, and generating line (6) outside fixedly connected with rack (16), reserve between rack (16) and have tooth's socket (17), compression spring (13) are fixed in tooth's socket (17) between rack (16).

4. The new structure of contact system of universal frame circuit breaker as claimed in claim 1, wherein: a second positioning hole (18) is formed in the connecting plate (7), a first connecting shaft (19) is fixedly connected to the inner portion of the second positioning hole (18), and the first connecting shaft (19) penetrates through the second positioning hole (18) and the first positioning hole (15) to be connected with the inner portion of the mounting shell (1) in a rotating mode.

5. the new structure of contact system of universal frame circuit breaker as claimed in claim 1, wherein: the upper end of the connecting plate (7) is movably connected with a second connecting shaft (20), the second connecting shaft (20) is fixedly connected with the contact support (8), and the second connecting shaft (20) is rotatably connected with the inner part of the mounting shell (1).

6. The new structure of contact system of universal frame circuit breaker as claimed in claim 5, wherein: the moving contact (10) is of a rectangular special-shaped structure, the moving contact (10) is overlapped with the horizontal center line of the contact support (8), and two groups of clamping plates (14) are symmetrically distributed on the horizontal center line of the moving contact (10).

7. The new structure of contact system of universal frame circuit breaker as claimed in claim 5, wherein: tooth grooves (17) between the compression springs (13) and the rack teeth (16) are distributed at equal intervals correspondingly, and the compression springs (13) are not attached to each other.

8. The new structure of contact system of universal frame circuit breaker as claimed in claim 1, wherein: the second positioning hole (18) is consistent with the first positioning hole (15) in specification, and the second positioning hole (18) is matched with the first positioning hole (15) and the first connecting shaft (19).

Technical Field

The invention relates to the technical field of low-voltage electrical apparatus structures, in particular to a novel structure of a contact system of a universal frame circuit breaker.

Background

The universal circuit breaker is mainly used for distributing electric energy, protecting circuits and power supply equipment from damage caused by faults such as overload, short circuit and undervoltage, reliably ensuring the safety of electric equipment and human bodies, and having direct relation with the universal circuit breaker on whether the circuits and the power supply equipment can safely operate. The contact system of the traditional universal circuit breaker adopts a copper braided wire (soft joint) to connect a moving contact and a bus, and the temperature rise of the universal circuit breaker is directly influenced by the quality of the copper braided wire (soft joint), the quality between the copper braided wire (soft joint) and the moving contact and the quality of the welding quality between the copper braided wire (soft joint) and the bus.

However, the universal circuit breaker is mostly connected by a moving contact and a soft joint and a bus by using a brazing welding mode, so that the whole welding process can be influenced by the condition that the brazing welding area can not meet the requirement, meanwhile, the universal circuit breaker can often generate the soft joint woven by copper wires in the welding process, the whole soft joint is hardened in the welding process, toxic and harmful gases are generated in the welding process of the moving contact and a copper braided wire (soft joint) and the welding process of the bus and the copper braided wire (soft joint), and the like, the damage to the surrounding environment and human body is caused, and the whole environmental protection and practicability are reduced.

Disclosure of Invention

The invention aims to provide a novel structure of a contact system of a universal frame circuit breaker, which aims to solve the problems that the conventional circuit breaker mostly adopts a mode that a moving contact is connected with a soft joint and the soft joint is connected with a bus in a brazing welding mode, so that the whole welding process may have the condition that the brazing welding area cannot meet the requirement, the normal use of the whole is influenced, meanwhile, the universal circuit breaker often generates the soft joint woven by copper wires in the welding process, the whole soft joint becomes hard in the welding process, toxic and harmful gases are generated in the welding process of the moving contact and a copper braided wire (soft joint) and the welding process of the bus and the copper braided wire (soft joint), the surrounding environment and the human body are damaged, and the whole environmental protection and practicability are reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a novel structure of a contact system of an universal frame circuit breaker comprises an installation shell, wherein the left end inside the installation shell comprises a fixed base, a positioning clamping block is fixedly connected to the outer side of the fixed base, a clamping groove is reserved on the inner side of the positioning clamping block, a bottom plate is fixedly connected to the right end inside the installation shell, a bus is movably connected to the lower end inside the bottom plate, a connecting plate is movably connected to the outer side of the bus, a contact support is fixedly installed at the upper end of the connecting plate and is movably connected with the inner wall of the installation shell, a contact spring is fixedly connected to the outer side of the contact support, a moving contact is fixedly connected to the outer side of the contact spring and is movably connected with the contact support through the contact spring, a static contact is fixedly connected to the upper end of the bottom plate, a support is fixedly connected to the lower, the compression spring is connected with one end of the bus, and the bus is movably connected with the support through the compression spring.

Preferably, the shape and size of the clamping groove at the inner side of the positioning clamping block are matched with the shape and size of the left end of the contact support, a clamping plate is fixedly connected to the outer side of the contact support, and the clamping plate is positioned at the outer sides of the contact spring and the moving contact.

Preferably, a first positioning hole is formed in the bus, the outer side of the bus is fixedly connected with the rack teeth, tooth grooves are reserved between the rack teeth, and the compression spring is fixed in the tooth grooves between the rack teeth.

Preferably, a second positioning hole is formed in the connecting plate, a first connecting shaft is fixedly connected to the inner portion of the second positioning hole, and the first connecting shaft penetrates through the second positioning hole and the first positioning hole to be rotatably connected with the inner portion of the mounting shell.

Preferably, the upper end of the connecting plate is movably connected with a second connecting shaft, the second connecting shaft is fixedly connected with the contact support, and the second connecting shaft is rotatably connected with the inside of the mounting shell.

Preferably, the moving contact is of a rectangular special-shaped structure, the horizontal center lines supported by the moving contact and the contacts are overlapped, and two groups of clamping plates are symmetrically distributed on the horizontal center line of the moving contact.

Preferably, the tooth spaces between the compression springs and the rack teeth are distributed at equal intervals correspondingly, and the compression springs are not attached to each other.

Preferably, the second positioning hole is consistent with the first positioning hole in specification, and the second positioning hole is matched with the first positioning hole and the first connecting shaft.

The invention has the beneficial effects that:

1. The new structure of the contact system of the universal frame circuit breaker, through connecting 2 pieces of connecting plates with the bus for a moving contact, can better utilize the reliable connection of the connecting plates and the moving contact, reduce the contact resistance, reduce the temperature rise; the bus and the connecting plate are in surface contact, so that the contact area is increased, and the compression spring is added between the connecting plate and the bus to increase the contact pressure between the connecting plate and the bus, so that the integral connection is more stable, and the integral stable operation is ensured;

2. The new structure of the contact system of the universal frame circuit breaker adopts the connecting plate to replace the original soft connection, and adopts the soldering welding between the original moving contact and the soft connection and between the soft connection and the bus, thereby solving the problem that the soldering welding area can not meet the requirement;

3. the new structure of the contact system of the universal frame circuit breaker uses the connecting plate to replace a copper braided wire (soft connection), can meet the design requirement without welding processing, utilizes the integral design of the connecting plate, changes the original soft connection braided by a plurality of 0.05mm copper wires, reduces the hardening of the soft connection in the welding process, achieves the aim of reducing the operation force, greatly reduces the space, reduces the production cost and meets the requirement of environmental protection.

Drawings

FIG. 1 is a schematic view of the disconnected state structure of the present invention;

FIG. 2 is a schematic structural view of the present invention in a closed state;

FIG. 3 is a schematic view of the front structure of the bus bar of the present invention;

FIG. 4 is a front view of the coupling plate of the present invention;

FIG. 5 is a schematic diagram of the front structure of the movable contact of the present invention;

FIG. 6 is a schematic side view of a bus bar according to the present invention;

Fig. 7 is a schematic view of the installation structure of the compression spring of the present invention.

In the figure: 1. installing a shell; 2. a fixed base; 3. positioning the clamping block; 4. a clamping groove; 5. a base plate; 6. a bus bar; 7. a coupling plate; 8. a contact support; 9. a contact spring; 10. a moving contact; 11. static contact; 12. a support; 13. a compression spring; 14. a splint; 15. a first positioning hole; 16. rack teeth; 17. a tooth socket; 18. a second positioning hole; 19. a first connecting shaft; 20. and a second connecting shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

referring to fig. 1-7, the present invention provides a technical solution: a new structure of a contact system of a universal frame circuit breaker comprises a mounting shell 1, wherein the left end inside the mounting shell 1 comprises a fixed base 2, the outer side of the fixed base 2 is fixedly connected with a positioning clamping block 3, the inner side of the positioning clamping block 3 is reserved with a clamping groove 4, the right end inside the mounting shell 1 is fixedly connected with a bottom plate 5, the lower end inside the bottom plate 5 is movably connected with a bus 6, the outer side of the bus 6 is movably connected with a connecting plate 7, the upper end of the connecting plate 7 is fixedly provided with a contact support 8, the contact support 8 is movably connected with the inner wall of the mounting shell 1, the outer side of the contact support 8 is fixedly connected with a contact spring 9, the outer side of the contact spring 9 is fixedly connected with a moving contact 10, the moving contact 10 is movably connected with the contact support 8 through the contact spring 9, the upper end of the bottom plate 5 is fixedly connected with a static contact, the compression spring 13 is connected with one end of the bus bar 6, and the bus bar 6 is movably connected with the bracket 12 through the compression spring 13.

Furthermore, the shape and size of the clamping groove 4 on the inner side of the positioning clamping block 3 are matched with the shape and size of the left end of the contact support 8, the clamping plate 14 is fixedly connected to the outer side of the contact support 8, the clamping plate 14 is located on the outer side of the contact spring 9 and the outer side of the movable contact 10, the clamping groove 4 in the positioning clamping block 3 can be used for placing and clamping the contact support 8, the whole body can keep good stability under the condition of circuit breaking, and the stability and the practicability of the whole body are improved.

Further, first locating hole 15 has been seted up to bus 6 inside, and bus 6 outside fixedly connected with rack 16, reserve tooth's socket 17 between the rack 16, compression spring 13 is fixed in the tooth's socket 17 between the rack 16, the rack 16 in the bus 6 outside can make things convenient for compression spring 13 to install, thereby make whole operation that can be stable, first locating hole 15 makes things convenient for bus 6 and connecting plate 7 to install simultaneously, thereby the degree of difficulty of integral erection has been reduced, and make whole operation that can be stable.

Further, second locating hole 18 has been seted up to gusset plate 7 inside, and the inside fixedly connected with first connecting axle 19 of second locating hole 18, first connecting axle 19 passes second locating hole 18 and first locating hole 15 and is connected with the inside rotation of installation casing 1, second locating hole 18 and first locating hole 15 can make things convenient for whole to install first connecting axle 19, and make first connecting axle 19 be connected with generating line 6 and gusset plate 7, thereby make generating line 6 can drive gusset plate 7 and remove, thereby control holistic switch effect, holistic practicality has been increased.

Further, there is second connecting axle 20 coupling plate 7 upper end swing joint, and second connecting axle 20 and contact support 8 fixed connection, and second connecting axle 20 and the inside rotation of installation casing 1 are connected, second connecting axle 20 and contact support 8 fixed connection, thereby it is rotatory to make contact support 8 take place to drive second connecting axle 20 when removing, so that adjust the angle of coupling plate 7, thereby drive moving contact 10 and remove, control holistic switch, stability when having increased overall control.

Furthermore, the moving contact 10 is a rectangular special-shaped structure, the moving contact 10 is overlapped with a horizontal center line of the contact support 8, two groups of clamping plates 14 are symmetrically distributed about the horizontal center line of the moving contact 10, the moving contact 10 with the rectangular special-shaped structure can be touched with the static contact 11, the whole circuit is powered on, otherwise, the whole circuit is powered off, the whole circuit breaker is controlled, the purpose of reducing the operating force is achieved, the space is greatly reduced, the production cost is reduced, and the requirement of environmental protection is met.

Furthermore, the tooth grooves 17 between the compression springs 13 and the rack teeth 16 are correspondingly distributed at equal intervals, the compression springs 13 are not attached to each other, the compression springs 13 are connected with the rack teeth 16 to control the moving contact 10, the reliable connection between the connecting plate 7 and the moving contact 10 can be better utilized, the contact resistance is reduced, and the temperature rise is reduced; the bus 6 and the connecting plate 7 are in surface contact, the contact area is increased, and the compression spring 13 is added between the connecting plate 7 and the bus 6, so that the contact pressure between the connecting plate 7 and the bus 6 is increased.

Furthermore, the specification of the second positioning hole 18 is consistent with that of the first positioning hole 15, the second positioning hole 18 is matched with the first positioning hole 15 and the first connecting shaft 19, the connecting plate 7 is used for replacing the original soft coupling, the purpose that the brazing welding area cannot meet the requirement is solved, the production cost is reduced, the processing process is improved, meanwhile, the soft coupling is reduced to be hardened in the welding process, the purpose of reducing the operating force is achieved, the space is greatly reduced, the production cost is reduced, and the requirement of environmental protection is met.

the working principle is as follows: firstly, a first connecting shaft 19 passes through a second positioning hole 18 and a first positioning hole 15 to be rotatably connected with the inside of an installation shell 1, so that the first connecting shaft 19 fixes a bus 6 and a connecting plate 7, the bus 6 drives the connecting plate 7 to move, meanwhile, a second connecting shaft 20 is used for connecting the connecting plate 7 with a contact support 8, so that the bus 6 can move leftwards and rightwards in the installation shell 1 for a moving contact 10 with the outer side of the contact support 8, the disconnection and connection of a fixed contact 11 of the moving contact 10 are controlled, the whole body can stably operate, the connecting plate 7 is used for replacing a copper braided wire (soft connection), the design requirement can be met without welding processing, the whole design of the connecting plate is utilized, the original soft connection braided by a plurality of 0.05mm copper wires is changed, and the hardening of the soft connection in the welding process is reduced, when the device is used, the bus 6 is controlled to move inwards, so that the first connecting shaft 19 is driven to rotate, the connecting plate 7 deflects, the contact support 8 moves, the moving contact 10 at the front end of the contact support 8 is controlled to attach the static contact 11, so that the whole body is electrified, the bus 6 is loosened, the bus 6 rebounds under the action of the compression spring 13 and drives the connecting plate 7 and the contact support 8 to return to the original position, the whole body returns to the disconnected state, the whole stable operation is ensured, when the moving contact 10 attaches the static contact 11, the contact spring 9 increases the pressure of the moving contact 10 to prevent the whole body from falling off, and when the connecting plate 7 and the contact support 8 return to the original position, the left end of the connecting plate 7 is mutually clamped with the positioning clamping block 3 in the fixed base 2, so that the whole body keeps good stability, and perfect control of a circuit is finished, moreover, the reliable connection between the connecting plate 7 and the moving contact 10 can be better utilized, the contact resistance is reduced, and the temperature rise is reduced; the surface contact is adopted between the bus 6 and the connecting plate 7, the contact area is increased, the compression spring 13 is added between the connecting plate 7 and the bus 6, the contact pressure between the connecting plate 7 and the bus 6 is increased, the aim that the brazing welding area cannot meet the requirement is fulfilled, and the safety and reliability of the circuit breaker in the operation are greatly improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.