KR102109018B1 - circuit breaker having elastic frame type joint device - Google Patents

Abstract

The present invention relates to a circuit breaker having an elastic frame-type coupling device for user convenience and operation reliability improvement. The present invention includes: a coupling case portion connected to the lower portion of the circuit breaker switching electric line connection for current flow blockage in the event of an overcurrent exceeding a preset value, where each of a pair of first and second step portions extends and protrudes downward at one lower edge, an elastic frame insertion space is formed in the upper end portion of a facing inner wall surface so as to be open in the width direction between the first step portion and the second step portion with a stopper portion protruding, a third step portion extends and protrudes downward on the other lower side, a dean rail insertion space open on both sides in the width direction is formed between the first and second step portions and the third step portion, and a first locking protrusion portion extends and protrudes from the lower end of the inner wall surface of the third step portion toward the first and second step portions; a dean rail provided as a long and extended plate material, inserted into and penetrating the dean rail insertion space along the width direction of the coupling case portion, and having locking edges on both width-direction sides that are integrally bent and extend to be locked and restrained by the first locking protrusion portion; and an elastic frame inserted and disposed in the elastic frame insertion space, selectively sliding within a preset range, having a rear locking portion to be exposed to the outside of the coupling case portion, having a second locking protrusion portion where the locking edge is selectively locked and restrained with a sliding movement to the front end portion facing the first locking protrusion portion, and restrained by the stopper portion to perform elastic restoration.

Description

Circuit breaker having elastic frame type joint device

The present invention relates to a circuit breaker equipped with an elastic frame-type coupling device, and more particularly, to a circuit breaker equipped with an elastic frame-type coupling device that improves usability and operational reliability.

In general, the circuit breaker prevents damage to electrical products and lines connected to the load by blocking the flow of current by quickly switching the opening and closing operation of the electric line when an overcurrent exceeding a set value or a short circuit occurs in the circuit. Device. Such a circuit breaker is driven by manual or automatic operation, and preferably can be operated to automatically short circuit current when an overcurrent occurs.

In addition, electrical and electronic equipment such as an electronic contactor, a circuit breaker, a circuit protection circuit breaker, and a communication device in a distribution box or a switchboard includes a configuration for arranging and mounting a plurality of electrical and electronic components. Here, the circuit breaker is installed in the switchboard and is used in a state coupled to a DIN rail fixed to the switchboard, and the breaker is provided with a structure for coupling with the DIN rail.

Here, the DIN rail is an angle-shaped member having a long length, and is formed in a form in which flanges are spread on both sides, and a plurality of through holes are formed on the bottom.

And, the lower part of the circuit breaker is provided so that the lock lever is assembled in a slidable state and selectively moved to the outside of the circuit breaker but is restored to the inside of the circuit breaker by coil spring. In addition, between the lower portion of the breaker and the locking lever, a groove into which the DIN rail is inserted is formed so that the DIN rail is inserted, and flanges formed on both sides of the DIN rail are formed on the inner wall surface of the groove and the front end of the locking lever. Each of the locking projections to be jammed was formed.

Here, in order to connect the circuit breaker to the DIN rail, the other side of the flange is pressed against the inclined surface of the locking protrusion formed on the locking lever while one side of the flange is inserted into the locking protrusion formed on the inner wall surface of the groove. Accordingly, the lock lever is temporarily retracted to the outside of the breaker by the coil spring, so that the din rail is coupled to the groove.

In addition, a separate fixing device for sliding the locking protrusion formed on the lock lever to the outside of the breaker was provided to separate the breaker from the DIN rail. At this time, as the user pulls the lock lever through the fixing device toward the outside of the breaker, the DIN rail is separated from each locking protrusion and separated.

However, in the conventional fixing device, after separating the circuit breaker from the DIN rail, the locking lever must be restored to the inside of the circuit breaker by the elastic force of the coil spring, but the position is not restored when the coil spring is released. There is a problem in that durability is poor because the locking lever is maintained or even detached from the outside of the circuit breaker.

Accordingly, there is a problem in that the locking lever for fixing the circuit breaker to the DIN rail is not locked to the flange formed on both sides of the DIN rail, so that the circuit breaker cannot be fixed to the DIN rail.

Korea Registered Utility Model No. 20-0308088

In order to solve the above problems, the present invention is to solve the problem of providing a circuit breaker equipped with an elastic frame-type coupling device to improve the ease of use and operational reliability.

In order to achieve the above problem, the present invention is connected to the lower portion of the circuit breaker that switches the connection of the electric line so as to cut off the current flow when the overcurrent exceeds a preset value, a pair of first stepped portion and the first edge Each of the two stepped portions is protruded downwardly, and an elastic frame insertion space is opened between the first stepped portion and the second stepped portion protruding from the upper end of the opposite inner wall surface in the width direction, and a third stepped portion is provided at the lower side. While the additionally protruding downward, a din rail insertion space is formed between the first step portion and the second step portion and the third step portion with both sides opened in the width direction, and the first step portion is formed from the lower end of the inner wall surface. A coupling case portion in which a locking protrusion extends and protrudes in a direction toward the first stepped portion and the second stepped portion; A din rail formed of a long elongated plate material and inserted through the din rail insertion space along the width direction of the coupling case portion, being integrally bent and extended to both sides in the width direction to form a locking frame that is hung and restrained on the first catching protrusion. ; And it is inserted and disposed in the elastic frame insertion space is selectively moved in a predetermined range, the engaging portion is formed in the rear portion is exposed to the outside of the coupling case portion, the slide is moved to the front end facing the first engaging projection As it becomes possible, a second locking protrusion part to which the locking frame is selectively locked is formed, and includes an elastic frame restrained and elastically restrained by being bound to the stopper part, so that the stopper part limits the moving distance of the elastic frame. The first stepped portion and the second stepped portion have a front stopper and a rear stopper which are spaced apart from each other in the width direction at the upper end of the opposite inner wall surface, and the elastic frame is configured to limit movement to the front side by the front stopper. Fixed protrusion protruding, and bound to the rear stopper, deformed when moved backward, and then forward The elastic frame includes an elastic protrusion integrally formed to be elastically restored, and the elastic frame is formed in a lattice shape along an open border of the central portion, and a deformation guide groove for elastic deformation is formed on the front and rear sides of the elastic protrusion. Between the stopper and the rear stopper, the breaker equipped with an elastic frame-type coupling device, characterized in that the tilting escape groove in which the fixing protrusion and the elastic protrusion are escaped in an inclined state when the elastic frame is tilted and pressed is inclined. Provides

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Through the above solution, the present invention provides the following effects.

First, in the elastic frame insertion space between the first step portion and the second step portion, the elastic frame and its elastic support structure are stably protected so as not to be separated by the stopper portion, thereby improving durability and operational reliability.

Second, it is possible to reduce the material cost through the hollow lattice-like structure of the elastic frame, and reduce the need for additional parts such as springs through an integrated structure such as a fixed protrusion and an elastic protrusion, thereby improving fishiness and economic efficiency.

Third, in the original position, the fixing protrusion remains constrained to the front stopper, but when the elastic frame is moved to the rear side, the end of the elastic protrusion integrally formed with the elastic frame is deformed and deformed in an inclined shape to be constrained to the rear stopper to expel it. Since a structure providing a restoring force is adopted, the number of additional parts such as springs can be reduced to improve the productivity and economics of the product.

Fourth, as the tilting escape grooves are formed at the corners of the first step and the second step so that the fixing protrusion and the elastic protrusion are avoided in an inclined state when the tilting of the elastic frame is pressurized, the assembling property is improved. Productivity can be significantly improved by preventing damage during assembly.

1 is a perspective view showing a breaker equipped with an elastic frame-type coupling device according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a breaker equipped with an elastic frame-type coupling device according to an embodiment of the present invention.
Figure 3 is a perspective view showing the lower coupling state of the elastic frame-type coupling device and the DIN rail according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of the elastic frame-type coupling device and the DIN rail according to an embodiment of the present invention.
Figure 5 is an exploded perspective view showing a lower assembly process of the elastic frame-type coupling device according to an embodiment of the present invention.
Figure 6a and Figure 6b is a cross-sectional view showing a main portion of the operation of the elastic frame-type coupling device according to an embodiment of the present invention.

Hereinafter, a circuit breaker equipped with an elastic frame-type coupling device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a circuit breaker with an elastic frame-type coupling device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a circuit breaker with an elastic frame-type coupling device according to an embodiment of the present invention , Figure 3 is a perspective view showing the lower coupling state of the elastic frame-type coupling device and the DIN rail according to an embodiment of the present invention, Figure 4 is an elastic frame-type coupling device according to an embodiment of the present invention and the combination of the DIN rail 5 is an exploded perspective view showing a lower assembly process of a circuit breaker equipped with an elastic frame type coupling device according to an embodiment of the present invention, and FIGS. 6A and 6B are elastic frame types according to an embodiment of the present invention. It is a sectional view of main parts showing the operation of the coupling device.

As shown in Figures 1 to 6b, the breaker 100 is provided with an elastic frame-type coupling device according to an embodiment of the present invention the coupling case portion 110, the DIN rail 120, and the elastic frame 130 It includes.

Here, referring to FIGS. 1 to 2, the coupling case unit 110 is connected to the lower portion of the circuit breaker 1 that switches the connection of the electric line to cut off the current flow when an overcurrent exceeding a preset value occurs. At this time, the coupling case unit 110 is a device provided to mediate the connection between the circuit breaker (1) and the DIN rail (120).

In addition, a plurality of first fastening holes 1b are formed through the breaker 1 in the vertical direction, and a plurality of second fastenings at positions corresponding to the first fastening holes 1b are formed in the coupling case part 110. The hole 115 may be formed through the vertical direction. At this time, a thread may be formed on the inner circumference of the first fastening hole 1b and the second fastening hole 115, and as the separate fastening screws 1a are inserted and fastened in an aligned state, the breaker 1 ) And the coupling case portion 110 may be fixedly coupled to each other.

Here, a groove-shaped dinrail insertion space 110sa is formed across the width direction at a lower portion of the coupling case part 110, and the dinrail insertion space 110sa is formed on an inner wall surface of the switchboard (not shown). It is desirable to understand the opposite arrangement.

In detail, the din rail 120 is formed with a bent border 121 bent along the longitudinal direction on both sides of the bent, and both sides of the rim on the din rail insertion space 110sa formed under the coupling case part 110 ( 121) may be selectively mounted as each is fastened. At this time, it is preferable to understand that the DIN rail 120 is mounted in a switchboard (not shown) and disposed in a fixed state.

Here, the coupling case portion 110 may be injection molded from a synthetic resin material such as nylon, and the din rail 120 may be formed by being press-processed as a metal material.

In addition, a plurality of through-holes 122 may be formed to penetrate through the vertical rail 120 at predetermined intervals along the longitudinal direction. At this time, the breaker 1 and the coupling case unit (A) as a separate holder (not shown) is inserted into the through hole 122 while the coupling case unit 110 is locked to the DIN rail 120 110) may be blocked from sliding along the longitudinal direction of the DIN rail (120).

Meanwhile, referring to FIGS. 1 to 5, a pair of first stepped portion 111 and second stepped portion 112 are protruded downwardly at a lower side edge of the coupling case portion 110, respectively. 3 to 5 is a view showing the coupling case 110 as viewed from the bottom, it is preferable to understand the upper side in the drawing in the lower direction.

In addition, an elastic frame insertion space 110sb opened in the width direction is formed between the first stepped portion 111 and the second stepped portion 112. Here, the spring 150 is inserted into the spring groove 118 and disposed to be elastically deformed along the width direction.

In addition, a third stepped portion 113 protrudes downward from the other side of the coupling case portion 110. Thus, the first rail 111 and the second step 112 and the third step 113 is opened in both sides in the width direction, the DIN rail 120 is selectively mounted DIN rail insertion Space 110sa is formed. In addition, the first engaging projection 114 from the lower end of the inner wall surface of the third stepped portion 113 protrudes in the direction toward the first stepped portion 111 and the second stepped portion 112.

Here, the DIN rail 120 is provided with a long elongated plate material and is mounted along the width direction of the coupling case portion 110 in the DIN rail insertion space 110sa. At this time, the locking frame 121 on one side in the width direction is locked by the first locking protrusion 114.

On the other hand, the elastic frame 130 is inserted from the inside of the coupling case portion 110 in the elastic frame insertion space (110sb) selectively slides within a predetermined range to selectively move the Dean rail (120) To fix. Therefore, the elastic frame 130 and its elastic support structure deviate from the elastic frame 130 in the elastic frame insertion space 110sb between the first stepped portion 111 and the second stepped portion 112 by the stopper portions sta and stb. By being stably protected from being prevented, durability and operational reliability can be improved. At this time, the elastic frame 130 is preferably molded from a synthetic material such as acetal.

To this end, the rear portion 131 of the elastic frame 130 is exposed to the rear outside of the coupling case portion 110 so as to function as a locking portion or a hook that can be mounted in a pulled manner. In addition, a second catching protrusion 132 is formed on the front end of the elastic frame 130, which is disposed opposite to the first catching protrusion 114, to which the locking border 121 is selectively locked and restrained as the slide moves. .

That is, when the elastic frame 130 is pulled to the rear, the locking frame 121 of the din rail 120 by the second locking protrusion 132 is released and can be separated from each other. On the other hand, when the outer side of the second locking protrusion 132 is pushed into the first locking protrusion 114 by pushing the locking edge 121 on one side of the DIN rail 120 into the inside of the first locking protrusion 114. The second catching projection 132 is sporadically retracted and restored. In this process, the other side of the locking frame 132 is fixed to the inside of the second locking frame 132, and after restoring, the other side of the locking frame 121 is restrained by the second locking protrusion 132 while the DIN rail 120 ) Is mounted and fixed to the coupling case part 110.

3 and 5, so as to limit the moving distance of the elastic restoration of the elastic frame 130,

The stopper portion is a front stopper (sta) and a rear stopper (stb) that are spaced apart from each other in the width direction at the upper end of the inner wall surface opposite to each other between the first stepped portion 111 and the second stepped portion 112 Includes.

The front stopper (sta) and the rear stopper (stb) protrude at opposite positions of the first stepped portion 111 and the second stepped portion 112, respectively, or the first stepped portion 111 and the first It may be protruded from any one of the two stepped portions 112.

On the other hand, the elastic frame 130 is formed in a lattice shape along the rim of the central portion is opened, it is preferable that the fixing protrusion 135 and the elastic protrusion 136 are protruded integrally on the side of the elastic frame 130. . As described above, the material cost is reduced through the hollow lattice-like structure of the elastic frame 130, and the need for additional parts such as springs is reduced through the integral structure of the fixed protrusion 135 and the elastic protrusion 136. It can improve sex and economics.

Here, both of the fixed protrusion 135 and the elastic protrusion 135 are disposed in a space between the front stopper (sta) and the rear stopper (stb). At this time, the fixing projections 135 are disposed on the front side and the elastic projections 136 are provided spaced apart from each other on the rear side.

In detail, it is preferable that the fixing protrusion 135 protrudes such that movement to the front side is restricted and restrained by the rear end of the front stopper (sta). Then, the elastic projection 136 is constrained to the front end of the rear stopper (stb) is formed to extend to provide elastic recovery force forward after the elastic deformation when moving backward.

To this end, it is preferable that deformation guide grooves 136a for securing the length of the elastic protrusions for elastic deformation are formed on the front and rear sides of the elastic protrusions 136, respectively.

The assembly process of the elastic frame will be described with reference to FIG. 5 as follows.

5, one side of the elastic frame 130 is inserted into the inside of the elastic frame inserting space (110sb) one side stoppers (sta, stb) and the other side of the elastic frame 130 It is pressurized and passes between the other side stopper parts (sta, stb) to be seated inside the elastic frame insertion space (110sb).

At this time, in order to prevent interference between the fixed protrusion 135 and the elastic protrusion 136, an inclined escape groove (da, db) is formed at corners of the first step 111 and the second step 112. In detail, at the corner between the front stopper (sta) and the rear stopper (stb), the fixed projections 135 and the elastic projections 136 are respectively inclined when tilting and pressing the elastic frame 130 to each other. It is preferable that the inclined escape groove (da, db) to be inserted is formed to be inclined.

As such, the fixing protrusion 135 and the elastic protrusion 136 are escaped and inserted into the inclined escape groove (da, db) during the assembly process, thereby improving the assembly performance and preventing damage to the elastic frame 130 during the assembly process. This can significantly improve the productivity of the product.

Meanwhile, the operation of the elastic frame-type coupling device will be described with reference to FIGS. 6A and 6B. 6A to 6B are also views showing the coupling case portion 110 as viewed from the bottom, it is preferable that the upper side in the drawing is described in the downward direction of the circuit breaker.

As shown in FIG. 6A, in the state in which no external force is applied to the elastic frame 130, the second locking protrusion 132 may maintain a protruding state to restrain the locking frame of the DIN rail. At this time, both the fixed protrusion 135 and the elastic protrusion 136 are disposed in a space between the front stopper and the rear stopper (stb), and the fixed protrusion 135 has a front stopper (sta). It is restrained by the rear end and maintains a state in which excessive forward movement is restricted.

On the other hand, as shown in Figure 6b, when the second engaging projection 132 is pressed or retracted by the DIN rail exposed rear portion 131 is pulled back, the elastic frame 130 is moved to the rear side. At this time, the end of the elastic projection 136 may be deformed in a shape that is inclined and curved in a state constrained to the front end of the rear stopper (stb).

As described above, when the retracted movement of the elastic frame 130 is adopted, a structure supported by the elastic projection 136 integrally formed on the elastic frame 130 is adopted to reduce the number of additional parts such as springs, thereby reducing the productivity of the product and Economics can be improved.

Through the elastic support structure, when the external force applied to the second catching protrusion 132 to the elastic frame rear portion 131 is removed, the elastic frame 130 is restored to the original position at the front side.

In such a state that the assembly is completed, when the elastic frame 130 is pulled rearward, the locking frame 121 of the DIN rail 120 by the second locking protrusion 132 is released and can be separated from each other. have. On the other hand, when the outer side of the second locking protrusion 132 is pushed into the first locking protrusion 114 inside the first locking protrusion 121 of the one side of the DIN rail 120, The second catching protrusion 132 is retreated and restored sporadically. In this process, the other locking frame 121 is fixed to the inside of the second locking frame 132, and after restoring, the other locking frame 121 is restrained by the second locking protrusion 132 while the Dean rail 120 ) May be mounted and fixed to the coupling case part 110.

At this time, the terms "include", "compose" or "prepare" as described above means that the corresponding component can be intrinsic unless otherwise stated, and other components are excluded. It should not be interpreted as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person skilled in the art to which the present invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted as being consistent with the contextual meaning of the related art, and are not to be interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified by a person skilled in the art to which the present invention pertains without departing from the scope of the claims of the present invention. The implementation of such modifications is within the scope of the present invention.

100: breaker provided with an elastic frame-type coupling device 110: coupling case
110sa: DIN rail insertion space 110sb: Elastic frame insertion space
111: first stepped portion 112: second stepped portion
sta: front stopper stb: rear stopper
113: third stepped portion 114: first catching projection
120: DIN-rail 121: hanging border
130: elastic frame 132: second catching projection
135: fixed projection 136: elastic projection
136a: deformation guide groove da, db: tilt escape groove

Claims (5)

It is connected to the lower part of the circuit breaker that switches the connection of the electric line so as to cut off the current flow when the overcurrent exceeds a preset value, but a pair of first and second stepped portions are protruded downwardly at the lower one edge, respectively. An elastic frame inserting space is opened between the first stepped portion and the second stepped portion protruding from the upper end of the wall surface in the width direction, and the third stepped portion is protruded downwardly on the other side of the lower portion, and the first stepped portion is protruded downward. And a dinrail insertion space having both sides open in the width direction between the second stepped portion and the third stepped portion, and a first catching protrusion portion from the lower end of the inner wall surface of the third stepped portion to the first stepped portion and the first stepped portion. A coupling case part protruding in the direction toward the second stepped part;
A din rail formed of a long elongated plate material and inserted through the din rail insertion space along the width direction of the coupling case portion, being integrally bent and extended to both sides in the width direction to form a locking frame that is hung and restrained on the first catching protrusion. ; And
It is inserted into the elastic frame insertion space and is selectively moved within a predetermined range, but a locking portion is formed in the rear portion to be exposed to the outside of the coupling case portion, and the slide is moved to a front end portion opposite to the first locking projection portion. Accordingly, the second locking protrusion is formed to selectively engage and constrain the locking frame, and includes an elastic frame that is constrained and restored by the stopper.
In order to limit the elastic restoration distance of the elastic frame, the stopper portion includes a front stopper and a rear stopper spaced apart from each other in the width direction at the upper end of the opposite inner wall surface of the first stepped portion and the second stepped portion,
The elastic frame includes a fixed protrusion protruding so that movement to the front side is restricted by the front stopper, and an elastic protrusion integrally formed to be restrained by the rear stopper and to be elastically restored forward after deformation when moving backward,
The elastic frame is formed in a lattice shape along the rim where the central portion is opened, and a deformation inducing groove for elastic deformation is formed on the front and rear sides of the elastic protrusion,
An elastic frame-type coupling device is provided between the front stopper and the rear stopper to form an inclined escape groove in which the fixing protrusion and the elastic protrusion are escaped in an inclined state when the elastic frame is inclined and pressed. Breaker. delete delete delete delete

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