CN104979141B - Breaker - Google Patents

Abstract

The present invention provides a kind of breaker, and the terminal being connected with electric wire of the breaker can also ensure that assembling property, and be able to ensure that the degree of being adjacent to screw mode peer-level when using with same press mode in the prior art.The terminal is in L-shaped, between the electric wire being connected positioned at moving contact or static contact with corresponding breaker, and fixed by press mode, portion is conformed with the bending section of the terminal, the jut is extended out by the surface co-planar that is connected with said wires, the extended surface of above-mentioned projection and the top of protuberance are set with coming close to or in contact with, and the docking that the protuberance is docked by cover portion and said base is stated upwardly base side and protruded.

Description

Breaker

Technical field

The present invention relates to the breaker of wiring breaker and electric leakage breaker etc. (Circuit Breaker), in detail For thin, it is related to the technology that a kind of terminal to for being connected with external cable is improved.

Background technology

For example, in order to prevent from causing the electricity because the electric current from transformer (Transfer) to the electric wire of loading robotics is excessive Line and loading robotics are burned out, and known method is to configure breaker in the midway of the corresponding electric wire arranged.The breaker With terminal, circuit that the number of poles of the terminal is constituted with by electric wire is i.e. single-phase, three-phase or three-phase and four-line etc. are corresponding, passes through The terminal, the breaker can (from the point of view of breaker, correspondence electric wire be " external cable ", hereinafter referred to as " electricity with corresponding electric wire Line ") connection.

The connection method of known breaker and electric wire for example has fast connecting terminal mode and insertion (Plug-in) mode Deng fast connecting terminal mode i.e., by terminal is configured to leaf spring, and the contact of terminal and electric wire, insertion side are kept with the elastic force Formula i.e., electric wire is configured to be referred to as bus (bus bar) conductor, breaker is connected with the conductor.In addition, needing one In the case of the current-carrying capacity for determining degree, or to saving the engineering time and in the case of having no special requirements, following manner is wide It is general to use, i.e. by the pad (washer) of screw (screw) or pressure line terminal that are arranged at terminal with provided with pressure connection terminal The electric wire or electric wire of son are connected in itself.

However, in the case of being provided with multiple above-mentioned breakers in point electric cabinet etc., because installation space is to the electric cabinet of this point Restriction so that point electric cabinet is autologous to be needed to minimize (downsizing), and then built-in breaker is also required to miniaturization, respectively Producer (maker) all for realize the miniaturization and effort.In addition, in order to by overcurrent detecting device and switching mechanism (i.e. The mechanism of above-mentioned " preventing electric wire and loading robotics to be burned out "), arc-control device (be used for extinguish produced along with circuit breaker Electric arc (arc)) etc. be installed in correspondence breaker, and improve the performance of breaker simultaneously, be also necessary the not direct shadow of concern Ring the part that breaker performance is improved.

Thus, it is well known in the art, by the way that the side that above-mentioned terminal is configured on the casing of breaker gabarit will be used as Method, press mode is changed to by screw mode of the prior art, the configuration space that can be saved needed for screw mode, will saved Save the space be used for improve performance or maintain equal performance in the case of, can reach the gabarit miniaturization (for example, With reference to patent document 1).

【Patent document 1】Japanese Laid-Open Patent Publication invention 2000-21284 (page 3 row of right column the 28th~49 row)

But, due to the terminal object that to be construction of cable run operator of interest when connecting electric wire, thus the terminal Can reduction, i.e. its be not allowed to the reduction of the degree of being adjacent to of casing.But, although in order to obtain and above-mentioned screw mode Equal degree of being adjacent to, and take and for example set longer press-in holding section to grade measure, it is only to be pressed into casing still Pushing force increase, it is possible to cause assembling property to deteriorate, also because press-in is acted casing can be caused damaged sometimes.

The content of the invention

In view of the foregoing, it is an object of the invention to provide a kind of breaker, what the breaker had connects with electric wire The terminal connect, when using with identical press mode in the prior art, can also have while assembling property is ensured There is the degree of being adjacent to screw mode peer-level.

Breaker involved in the present invention have casing, open-close mechanism section, transverse arm (cross bar, moving contact supporting arm), Moving contact, static contact, arc-control device and binding post.Wherein, casing is by the cover portion (cover) and pedestal that are formed with insulator (base) constitute；Open-close mechanism section is configured between the frame plate of relative configuration (frame plate), with what is stretched out by cover portion Operation handle (handle)；Transverse arm links and rotated with open-close mechanism section；Moving contact links with transverse arm, and its at least one end has Movable contact；Static contact has stationary contact, and the stationary contact can be contacted and separated with the movable contact, and the contact of the two is with separating It can be switched；Arc-control device is used to cut off the electric arc produced between the stationary contact and the movable contact；Binding post is in L Font, positioned at static contact and corresponding breaker connect electric wire between, or positioned at moving contact and with corresponding breaker connection Electric wire between, fixed by being pressed into pedestal.Portion is conformed with the bending section of the binding post of above-mentioned L-shaped, should Jut has by the coplanar extended surface that extends out of ground of the table being connected with electric wire, the extended surface of the jut and protuberance Top is come close to or in contact with, and the docking that the protuberance is docked by cover portion and pedestal is protruded towards pedestal side.

As described above, using the present invention, using the teaching of the invention it is possible to provide the breaker of a kind of stay in grade as follows, i.e. it is not only Assembling property is excellent, cost is relatively low, and when construction of cable run operator connects electric wire with the terminal of corresponding breaker, the end Son will not produce movement.

Brief description of the drawings

Fig. 1 is the stereoscopic figure of the breaker involved by embodiments of the present invention 1.

Fig. 2 is stereogram of the breaker before cover portion is installed in Fig. 1.

Fig. 3 is the sectional view of the line A-A cutting along along Fig. 1.

Fig. 4 is the enlarged drawing of the binding post in Fig. 1.

Fig. 5 is the stereogram equivalent to Fig. 2 in variation.

【Description of reference numerals】

1：Cover portion；1b：Protuberance；2：Pedestal；3：Operation handle；4：Mains side binding post；5：Load side lug terminal； 5b：First surface；5c：Second surface；5f：Jut；6：Stationary contact；7：Static contact；8：Movable contact；10：Transverse arm；11：It is dynamic to touch Head；51：Open-close mechanism section；52：Arc-control device；100：Breaker.

Embodiment

【Embodiment 1】

Fig. 1 and Fig. 2 are the profiles of the breaker involved by the embodiments of the present invention 1 in (trip) state of dropout Figure, specifically, Fig. 1 are installation state, and Fig. 2 is the state before installation cover portion.In addition, Fig. 3 is the line A-A along along Fig. 1 The sectional view of cutting, Fig. 4 is the outline drawing of the wire conductors as significant points.

In figs. 1 to 3, the insulation box of 3 pole breakers 101 is made up of cover portion 1 and pedestal 2, wherein, on the base 2 Open-close mechanism section 51, arc-control device 52 and overcurrent protection 53 are configured with, wherein, open-close mechanism section 51 has operation handle 3, the number (being herein 3) of arc-control device 52 is corresponding with the number of poles of terminal.Operation handle 3 by cover portion 1 handle window 1a It is protruding, so as to which by ON or OFF direction operations, this is known prior art.Further, since arc-control device 52 With the relation of the position of overcurrent protection 53, binding post 4 is the mains side being connected with power side wire (not shown) Binding post, binding post 5 is the load side binding post being connected with load side electric wire (not shown), and this is also known.Separately Outside, when being connected with each electric wire, with the screw of belt washer etc. at screw hole 4a, 5a of each binding post 4,5, securely to connect Electric wire or the crimp type terminal for being crimped on electric wire top (front end).

In addition, open-close mechanism section 51, arc-control device 52 and overcurrent protection 53 are also using known technology.That is, Static contact 7 and moving contact 11 are provided with breaker 101, wherein, static contact 7 is extended out by mains side binding post 4 and formed, Its one end has stationary contact 6, and moving contact 11 is a part for constituting open-close mechanism section 51, and it is by for example, resin-molded component Transverse arm 10 keep, and be connected by moving contact supporting member 8 and overcurrent protection 53 with load side lug terminal 5, Its one end has movable contact 9.The contact of static contact 7 and moving contact 11 can be switched with separating, especially, in the two separation When, electric arc can be produced between stationary contact and movable contact, the electric arc is cut off by arc-control device 52.In addition, the separation of the two is logical Cross following manner progress, i.e. separate the two from the operation to OFF directions of operation handle 3, or, overcurrent protection dress Put 53 to be acted according to the current overload state generation of circuit, open-close mechanism section makes respective action, separates the two.Moreover, by It is the leakage with known zero phase current transformer 12 and earth leakage protective device 54 in the breaker 101 involved by present embodiment 1 Electrical circuit breakers, thus when the leakage current of the circuit is more than setting, also carry out above-mentioned separating action.These known dresses It is not pith of the invention to put, thus description is omitted.

Below, for the pith as the present invention each binding post, especially load side lug terminal 5 is (following Referred to as terminal 5) illustrate.As shown in figure 4, the profile of terminal 5 is substantially in alphabetical L-shaped, electric wire or electric wire is crimped on The crimp type terminal on top is close on first surface 5b, and first surface 5b is the bottom surface of the L-shaped, by by screw (not shown) It is securely mounted in screw hole 5a, electric wire is electrically connected with terminal 5.In addition, relative to first surface 5b settings, longer Second surface 5c and the 3rd shorter surface 5d have a pair of the bellying 5e bloated by these faces respectively, by the way that terminal 5 is inserted Enter in the insertion groove 2a (reference picture 3) set on pedestal 2, to realize that so-called press-in is installed.In addition, second surface 5c is also end The solder side or terminal 5 and positioned at second surface 5c and static contact 7 of son 5 and conductor 13 through zero phase current transformer 12 Conductor (not shown) solder side.

Portion 5f is conformed with bending section between the first surface 5b and second surface 5c of the terminal 5 of the L-shaped, should Jut 5f is extended out and coplanar with first surface 5b by first surface 5b, i.e., constitute same plane with the 1st surface 5b.Separately Outside, as shown in Fig. 2 being provided with protuberance 1b in cover portion 1, protuberance 1b by cover portion 1 and the docking docked of pedestal 2 towards base 2 sides of seat are protruded.Both, i.e., jut 5f and protuberance 1b position relationship are as shown in figure 3, protuberance 1b positions on paper It is arranged close in jut 5f top, and with jut 5f.Therefore, it is not only able to ensure there are enough spaces to be used to connect Electric wire or the crimp type terminal for being crimped on electric wire top, that is, be able to ensure that the first surface 5b of abundance space, also, in circuit After electric wire and terminal 5 are fastenedly connected by construction operation person, such as when extraction is inserted in the screwdriver of screw head, and because of certain The origin of an incident and during to electric wire imposed load when, terminal 5 can be prevented to be moved upward (or deformation).Therefore for terminal 5 To insertion groove 2a insertion, its press-in situation can be determined from the angle of assembleability, it is advantageously ensured that stay in grade, and Assembling expense can be greatly lowered.Here, " close " refers to, and in chimeric cover portion 1 and pedestal 2, the protuberance 1b being oppositely arranged It is nearer distance with the distance between jut 5f, but the distance will not interfere the two and hinder cover portion 1 and pedestal 2 It is chimeric.That is, the protuberance 1b and jut 5f of relative configuration nearer distance spaced apart, the setting of the distance is based on protrusion Portion 1b has the consideration of dimensional tolerance.Certainly, as long as not hindering the chimeric of cover portion 1 and pedestal 2, protuberance 1b and jut 5f also may be used To be in contact.

In addition, as shown in Figure 3 or Figure 4, jut 5f top and second surface 5c are coplanar, i.e. jut 5f is not protruded from Second surface 5c, it is thus possible to more ensure the leakage detecting circuit 12a's that the zero phase current transformer 12 for example shown in Fig. 2 has Insertion space, is preferably mode.In addition, in the present embodiment, protuberance 1b is integrally formed with cover portion 1, but example Such as can also as shown in Figure 5, protuberance is other part, that is, consists of partition 14 and contacted with jut 5f, special Not, when countermeasure is taken in the gas discharge produced when cutting off electric arc to arc-control device 52, by itself and power supply side terminal Son 4 is applied in combination better.As partition 14, in the case where setting protuberance as other part, by base When seat 2 is located at lower section and configures breaker, protuberance 1b is contacted due to deadweight with jut 5f.In addition, in configuration breaker When, protuberance 1b deadweight and not towards jut 5f sides in the case of, protuberance 1b can not also be in contact with jut 5f. That is, it is identical with forming protuberance 1b situation in cover portion 1, as long as protuberance 1b (partition 14) and jut 5f is arranged close to i.e. Can.

Claims (3)

1. a kind of breaker, has：

Casing, it is made up of the cover portion and pedestal formed with insulator；

Open-close mechanism section, it is configured between the frame plate of relative configuration, with the operation handle stretched out by the cover portion；

Transverse arm, it links and rotated with the open-close mechanism section；

Moving contact, it links with the transverse arm, and its at least one end has movable contact；

Static contact, it has stationary contact, and the stationary contact can be contacted and separated with the movable contact, and the contact of the two is with dividing From allowing hand over；

Arc-control device, it is used to be breaking at the electric arc produced between the stationary contact and the movable contact；

Binding post, it is in L-shaped, between the electric wire being connected positioned at the static contact and with breaker, or positioned at described dynamic Between contact and the electric wire being connected with breaker, fixed by being pressed into the pedestal,

Characterized in that,

Portion is conformed with the bending section of the binding post of the L-shaped, the jut has by being connected with the electric wire The extended surface that extends out of surface co-planar ground, the extended surface of the jut and the top of protuberance come close to or in contact with, described The docking that protuberance is docked by the cover portion and the pedestal is protruded towards the pedestal side.

2. breaker according to claim 1, it is characterised in that

The surface formed after the surface curvature being connected with electric wire of the binding post and the top of the jut are coplanar.

3. breaker according to claim 1 or 2, it is characterised in that

The protuberance is integrally formed with the cover portion.