WO2015027942A1

WO2015027942A1 - Fixing structure of auxiliary connecting plate of breaker

Info

Publication number: WO2015027942A1
Application number: PCT/CN2014/085519
Authority: WO
Inventors: 李江龙
Original assignee: 德力西电气有限公司
Priority date: 2013-08-30
Filing date: 2014-08-29
Publication date: 2015-03-05
Also published as: BR212016002936U2; BR212016002936Y1; CN203386676U; RU164961U1

Abstract

A fixing structure of the auxiliary connecting plate of a breaker, the fixing structure comprising a base (1), an auxiliary connecting plate (2) and a stopper (3); the base (1) is provided with a first polarity cavity (11) and a second polarity cavity (12) separated from and communicating with each other, the second polarity cavity (12) being used for installing a connecting plate (4); the stopper (3) is detachably installed in the first polarity cavity (11); an accommodation cavity (5) for accommodating the auxiliary connecting plate (2) is disposed between the stopper (3) and the first polarity cavity (11); the auxiliary connecting plate (2) and the connecting plate (4) are not installed in polarity cavities located at the same side of the breaker and having the same polarity, thus enabling an operator to remove the stopper (3) and the auxiliary connecting plate (2) when the breaker needs back-panel wiring, so as to effectively install a terminal; simultaneously, the terminal used for back-panel wiring directly contacts the silvered connecting plate (4), thus effectively avoiding a high rise in temperature at a junction.

Description

Circuit breaker auxiliary connecting plate fixing structure

The utility model belongs to the technical field of circuit breakers, in particular to a circuit breaker auxiliary connecting plate fixing structure. Background technique

The contact system of the circuit breaker and the arc extinguishing chamber of the operating mechanism are mounted on the base of the circuit breaker, and one end of the contact system is electrically connected to the connecting plate. When the connecting plate is electrically connected to the incoming and outgoing lines through the connecting terminal, the circuit breaker can be connected The contact system is electrically connected to the main circuit, so that the circuit breaker can protect the normal operation of the circuit. When an abnormal current occurs, the current can be cut off in time to prevent the load electric appliance from being affected by the abnormal current. In order to fix the terminal block, it is necessary to fix the auxiliary connecting plate on the base.

In addition, when the external connecting plate or the connecting nose is bolted to the main body of the circuit breaker, in order to ensure sufficient contact pressure at the junction of the two to ensure that the temperature rise of the contact is not too high, an auxiliary connecting plate is generally used. The auxiliary connecting plate is detachably mounted at the connection between the circuit breaker body and the wiring nose through the card locking device to meet the auxiliary connecting plate insertion type and the rear plate wiring mode.

For example, Chinese Patent Publication No. CN202183345U discloses a circuit breaker auxiliary connection row fixing structure, which comprises a base, an auxiliary terminal block mounted on the base and a terminal fixing block also mounted on the base, and the pole side walls of the base And a projection on each of the face-to-face positions of the side walls, and a groove on each of the side walls of the other side corresponding to the boss also at the face-to-face position, the auxiliary wiring row having a pair a step that is symmetrical to each other, the terminal fixing block has a pair of protruding ends, and the protruding end is matched with the boss through the groove, and after the auxiliary terminal block is fixed, respectively, the protruding end and the boss are contacted, thereby performing the terminal fixed.

However, in the circuit breaker auxiliary connection row fixing structure disclosed in the patent document, the auxiliary terminal block is located on one side of the terminal block, and when the fixed block is fixed, the auxiliary terminal block is exposed to the outside; secondly, such a fixed structure is on the board of the circuit breaker. In the post wiring mode, in order to reduce the resistance, the temperature rise is not too high, generally The method is to plate silver on the auxiliary connecting plate, but this method is easy to increase the material cost of the product; or directly remove the auxiliary wiring, but this method will make the wiring block and the base have a larger Porosity, in appearance and use, has certain defects. Utility model content

The problem to be solved by the utility model is that the existing circuit breaker auxiliary connecting row fixing structure has technical problems inconvenience in the post-board wiring manner, thereby providing a post-installation on the binding post and the breaking circuit after the auxiliary connecting plate is removed. The connecting plates of the circuit breakers are directly connected, and the temperature rise between the two is not excessively high.

In order to achieve the above object, the present invention provides a circuit breaker auxiliary connecting plate fixing structure, comprising a base, an auxiliary connecting plate and a plug, the base having a first polarity cavity separated and communicated and a connecting connecting plate a second polarity chamber; the plug is detachably mounted in the first polarity chamber, and a receiving cavity for accommodating the auxiliary connecting plate is between the plug and the first polarity chamber.

The two side walls of the first polar cavity respectively have protrusions that do not extend to the top surface of the first polar cavity; the protrusions form the receiving cavity with the top surface; A groove that cooperates with the protrusion is provided on a side that cooperates with the two side walls.

A retaining means is formed on the recess and/or the projection to enable both of the recesses to engage when the recess is engaged with the projection.

The two side walls of the first polar cavity respectively have grooves that do not extend to the top surface of the first polar cavity; the side of the plug that cooperates with the two side walls has a fit with the groove a protrusion having a thickness greater than a depth of the groove, such that when the two are mated, the protrusion may be higher than the groove and formed toward the end surface of the top surface and the top surface The accommodation chamber is described.

A retaining means is formed on the groove and/or the projection to enable both of the grooves to be engaged when the groove is engaged with the projection.

The outer side wall of the plug has an extension, and the extension is installed when the plug is mounted on the first When in the polar chamber, the opening of the receiving chamber can be closed.

The height of the receiving chamber is the same as the thickness of the auxiliary connecting plate.

The face-facing sides of the second polar chamber each have a guide projection for guiding the web.

Compared with the prior art, the above technical solution of the utility model has the following advantages:

The circuit breaker auxiliary connecting plate fixing structure of the utility model, the auxiliary connecting plate is not installed in the polar cavity on the same side of the same polarity of the circuit breaker as the connecting plate, so when the circuit breaker needs the rear wiring of the board, it can be beneficial The operator removes the plug and the auxiliary connecting plate, and the terminal is conveniently and efficiently installed. At the same time, the terminal of the rear wiring of the board is directly in contact with the silver-plated connecting plate, thereby effectively ensuring that the temperature rise of the product wiring is not too high.

The circuit breaker auxiliary connecting plate fixing structure of the utility model has two protrusions on the two side walls of the auxiliary connecting plate having protrusions not extending to the top surface thereof, and the end faces of the protrusions facing the top surface are formed with the top surface A receiving cavity for accommodating the auxiliary connecting plate. The receiving chamber can be closed by the extension on the plug so that the auxiliary connecting plate is not exposed to the outside in other ways than the post-board wiring.

The circuit breaker auxiliary connecting plate fixing structure of the utility model has guiding lugs on the face-to-face side of the polar cavity for mounting the connecting plate, so that the guiding plate can be guided and positioned when the connecting plate is installed, so that the assembly alignment is facilitated . DRAWINGS

In order to make the content of the utility model more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings, wherein

1 is a perspective view showing an exploded structure of a circuit breaker auxiliary connecting plate according to an embodiment of the present invention;

Figure 2 is a perspective view showing the base of the circuit breaker auxiliary connecting plate fixing structure of Figure 1;

Figure 3 is a perspective view showing the plug of the circuit breaker auxiliary connecting plate fixing structure of Figure 1;

4 shows a fixed structure of a circuit breaker auxiliary connecting plate provided by an embodiment of the present invention Stereo picture.

Description of the reference numerals

1-base, 2-auxiliary connection plate, 3-plug, 4-connector plate, 5-accommodating chamber, 11-first polarity chamber, 12-second polarity chamber, 111-side wall, 112-top surface , 113-protrusion, 31-side, 32-groove, 33-extension, 121-side, 122-guide projection, 6-inclined projection. detailed description

The fixing structure of the circuit breaker auxiliary connecting plate provided by the specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1, 2 and 4, the circuit breaker auxiliary connecting plate fixing structure comprises a base 1, an auxiliary connecting plate 2 and a plug 3, wherein

As shown in FIG. 2, the base 1 has a first polarity cavity 11 that is separated and communicated with a second polarity cavity 12 for mounting the connection plate 4;

The plug 3 is detachably mounted in the first polar chamber 11, and a receiving chamber 5 for accommodating the auxiliary connecting plate 2 is disposed between the plug 3 and the first polar chamber 11.

With the above structure, since the auxiliary connecting plate 2 is not mounted in the polar cavity on the same side of the same polarity as the connecting plate 4, when the circuit breaker requires post-board wiring, the operator can facilitate the disassembly of the plug 3 and The auxiliary connecting plate 2 is simply and efficiently installed into the binding post; at the same time, the terminal post-connecting terminal will directly contact the silver-plated connecting plate 4, effectively ensuring that the temperature rise of the product wiring is not too high.

The two forms of the accommodating chamber 5 will be described in detail below, but it should be understood that the form of the accommodating chamber 5 is not limited thereto, and equivalent changes, substitutions or modifications may be made by those skilled in the art as long as the auxiliary connection can be realized. The function that the board and the connecting board are not installed at the same position and the fixing of the connecting terminal can be achieved falls within the protection scope of the claims of the present invention, specifically:

method one

In the first mode, as shown in FIG. 2, the two side walls 111 of the first polar cavity 11 face each have a height direction extending, but do not extend to the top of the first polarity cavity 11. Face 112 a protrusion 113; the protrusion 113 and the top surface 112 form the receiving cavity 5; correspondingly, as shown in FIG. 3, the side surface 31 of the plug 3 that cooperates with the two side walls 111 There is a recess 32 that cooperates with the projection 113.

Thus, the auxiliary connecting plate 2 is first inserted into the accommodating cavity 5 to be in contact with the top surface of the projection 113, and then the plug 3 is inserted into the first polar cavity 111 along the fit of the recess 32 and the projection 113, Thereby, the auxiliary connecting plate 2 is fixedly mounted.

Of course, the positions of the protrusions 113 on the two side walls 111 of the first polar cavity 11 may correspond to each other as shown in FIG. 2, or may be staggered without corresponding. Correspondingly, the recess 32 needs to cooperate with the projection 113.

Further, as shown in FIG. 3, the groove 32 and/or the protrusion 113 are formed with a clamping device, such as an inclined protrusion 6 at the bottom of the groove 32, in the groove 32 and the When the projections 113 are engaged, the bottom wall of the projections 113 will be caught on the inclined projections 6, so that the plugs 3 and the base 1 can be clamped to prevent the plugs 3 from coming off.

In the first method, the structure of the projection 113 avoids the ejection mode of the side core in the die-casting mold or the plastic mold, and can effectively realize the functional requirements while greatly reducing the mold cost.

Way two

In the second embodiment, the two side walls U 1 of the first polar cavity 11 respectively extend along the height direction thereof, but do not extend to the top surface 112 of the first polar cavity 11 . a slot (not shown in the drawings, but can be understood by those skilled in the art according to the description and the drawings), correspondingly, the side surface 31 of the plug 3 that cooperates with the two side walls 111 has a fit with the slot a protrusion (not shown in the drawings, but having a shape similar to the protrusion 113), the protrusion having a thickness greater than the depth of the groove, such that when the two are fitted, that is, when the protrusion fits in the groove, the protrusion The receiving cavity 5 may be formed with the top surface 112 at an end surface of the top surface 112 that is higher than the groove.

Thus, the auxiliary connecting plate 2 is first inserted into the accommodating chamber 5 so as to be in contact with the protruding body The end faces of the upper portion of the groove are contacted, and then the plug 3 is inserted into the first polar cavity 111 along the fit of the groove and the projection, thereby fixing the auxiliary connecting plate 2 in a fixed manner.

Of course, the positions of the slots on the two side walls 111 of the first polar cavity 11 may correspond to the positions of the protrusions 113 as shown in FIG. 2, or may be staggered without corresponding correspondence. . Correspondingly, the protrusions need to cooperate with the grooves.

Further, a clamping device is formed on the groove and/or the protrusion to clamp the plug 3 and the base 1 when the groove is engaged with the protrusion to prevent the plug 3 from leaking.

It should be noted that the clamping device in the second method can be the same as the clamping device in the first method, and will not be specifically described herein.

Furthermore, as shown in Figures 3 and 4, the outer side wall of the plug 3 has an extension 33 which can enclose the accommodation when the plug 3 is mounted in the first polar chamber 11. The opening of the cavity 5 forms a complete enclosed space and tightly wraps the auxiliary connecting plate 2 so that the auxiliary connecting plate 2 is not exposed to the outside and is prevented from slipping off.

Therefore, in the two structures of the first mode and the second mode, the base 1, the auxiliary connecting plate 2 and the plug 3 cooperate with each other to provide an effective locking force for the external wiring of the circuit breaker. At the same time, when the circuit breaker needs to use the rear wiring of the board, it can facilitate the operator to disassemble the plug 3 and the auxiliary connecting board 2, and the wiring post can be easily and efficiently installed; at the same time, the terminal post wiring of the board will be directly connected with the silver plated connecting plate 4 Contact, effectively ensure that the temperature rise of the product wiring is not too high.

In addition, the height of the accommodating cavity 5 is the same as the thickness of the auxiliary connecting plate 2, so that after the auxiliary connecting plate 2 is mounted, the upper surface thereof can be in contact with the top surface 112, and the lower surface and the protrusion 113 The end faces or the end faces of the protrusions are in contact with each other to facilitate the mounting and fixing of the auxiliary connecting plate 2.

In addition, as shown in FIG. 2, the side faces 121 of the second polar cavity 12 respectively have guiding protrusions 122 for guiding the connecting plate 4, so that the connecting plate 4 can be guided and positioned when the connecting plate 4 is mounted. It is easy to assemble and align.

Obviously, the above embodiments are merely examples for clarity of explanation, and are not limited to the embodiments. Set. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. The obvious changes or variations derived therefrom are still within the scope of protection created by the present invention.

Claims

A circuit breaker auxiliary connecting plate fixing structure comprising a base (1), an auxiliary connecting plate (2) and a plug (3), characterized in that

The base (1) has a first polarity chamber (U) that is separated and communicated, and a second polarity chamber (12) for mounting the connection board (4);

The plug (3) is detachably mounted in the first polar cavity (11), and the plug (3) and the first polar cavity (11) are provided between the plug and the first polar cavity (11) for accommodating the auxiliary connection The receiving chamber (5) of the plate (2).

The circuit breaker auxiliary connecting plate fixing structure according to claim 1, wherein the two side walls (111) of the first polar cavity (11) respectively have no extension to the first polarity a protrusion (113) of a top surface (112) of the cavity (11); the protrusion (113) and the top surface (112) form the receiving cavity (5);

The side surface (31) of the plug (3) that cooperates with the two side walls (111) has a recess (32) that cooperates with the protrusion (113).

The circuit breaker auxiliary connecting plate fixing structure according to claim 2, wherein the groove (32) and/or the protrusion (113) are formed with a clamping device to be in the concave When the groove (32) is engaged with the projection (113), both can be clamped.

The circuit breaker auxiliary connecting plate fixing structure according to claim 1, wherein the two side walls (111) of the first polarity cavity (11) respectively have no extension to the first polarity a groove of the top surface (112) of the cavity (11);

The side surface (31) of the plug (3) that cooperates with the two side walls (111) has a protrusion that cooperates with the groove, and the protrusion has a thickness greater than the depth of the groove to match the two The protrusion may be higher than the groove and form the receiving cavity (5) with the top surface (112) facing the end surface of the top surface (112).

The circuit breaker auxiliary connecting plate fixing structure according to claim 4, wherein the groove and/or the protruding body are formed with a clamping device to cooperate when the groove is engaged with the protruding body Both can be stuck.

The circuit breaker auxiliary connecting plate fixing structure according to any one of claims 1 to 5, wherein an outer side wall of the plug (3) has an extending portion (33), and the extending portion (33) is When the plug (3) is installed in the first polar chamber (11), the opening of the accommodating chamber (5) can be closed.

7. The circuit breaker auxiliary connecting plate fixing structure according to claim 6, wherein the height of the receiving cavity (5) is the same as the thickness of the auxiliary connecting plate (2).

8. The circuit breaker auxiliary connecting plate fixing structure according to claim 6, wherein the face-to-face side faces (121) of the second polar cavity (12) respectively have guiding the connecting plates

(4) Guide bump (122).