KR102109012B1 - circuit breaker having bow type joint device - Google Patents

Abstract

The present invention relates to a circuit breaker having a bow-type coupling device for 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, a fixing device insertion space is formed so as to be open in the width direction between the first step portion and the second step portion, a third step portion extends and protrudes downward on the other lower side, a dean rail insertion space open on both sides in the longitudinal 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 longitudinal direction, 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 a fixing device inserted into the fixing device insertion space from the outside of the coupling case portion, selectively sliding within a preset range, having a rear end locking ring 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 provided with a bow elastic portion made of an elastic material, formed so as to be bent in the middle portion, and locked and restrained by the inner wall surfaces of the first step portion and the second step portion.

Description

Circuit breaker having bow type joint device

The present invention relates to a circuit breaker equipped with a bow-type coupling device, and more particularly, to a circuit breaker equipped with a bow-type coupling device with improved 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 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 the lock lever is kept exposed to the outside of the breaker or even detached.

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 a bow-type coupling device having improved operational reliability.

In order to solve the above problems, 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 a first edge The second stepped portion is protruded downwardly, respectively, and a fixing device insertion space opened in the width direction is formed between the first stepped portion and the second stepped portion, and the third stepped portion is protruded downwardly on the other side of the lower portion. Between the stepped portion and the second stepped portion and the third stepped portion, a din rail insertion space having both sides open in the longitudinal direction is formed, and a first catching portion is formed from the lower end of the inner wall surface of the third stepped portion to the first stepped portion and A coupling case portion extending and protruding in a direction toward the second stepped portion; A din rail provided with a long elongated plate material and inserted through the length of the din rail insertion space along a longitudinal direction, and integrally bent and extended to both sides in the width direction to form a locking frame that is locked to the first catching protrusion; And it is inserted from the outside of the coupling case portion in the fixing device insertion space and is selectively moved to slide within a predetermined range, a hook ring is formed at the rear end is exposed to the outside of the coupling case portion, facing the first catching projection portion As the slide is moved to the front end portion, a second locking protrusion portion to which the locking frame is selectively locked and restrained is formed, and it is formed to be bent in the center portion to be elastically inserted into the inner wall surfaces of the first step portion and the second step portion. It includes a fixing device provided with a bow elastic portion, wherein the bow elastic portion includes a fixed end formed in the lower center of the fixing device, and a pair of elastic bends connected to the fixed end and provided with multiple bends to be freely deformed, The elastic bent portion extends symmetrically from the fixed end to a predetermined radius of curvature. A pair of first elastic bent portions convexly formed toward the inner wall surfaces of the first stepped portion and the second stepped portion, and continuously bent from each of the first elastic bent portions so as to have a predetermined radius of curvature. It includes a pair of second elastic bends that are formed concave in the direction and free ends are respectively formed at the ends, wherein each outer surface of the first elastic bend is elastic to each inner wall surface of the first step and the second step. Pressed, each of the free ends is elastically pressed to the inner wall surfaces of the first step portion and the second step portion, the width between each of the free ends is formed to exceed the width of the fixing device insertion space, the first At the lower end of each inner wall surface of the first stepped portion and the second stepped portion, each free end is elastically inserted so that the fixing device is automatically retracted to the front in the retracted state. Inclined depression grooves are deeply recessed to the both sides in the width direction as they go to the side, respectively, and slide guide grooves partitioned in the vertical direction apart from the inclined restoration grooves at the upper ends of the inner wall surfaces of the first stepped portion and the second stepped portion Recessed on both sides in the width direction, a stopper step portion is formed on both sides in the front and rear direction of the slide guide groove, and a plurality of stoppers are inserted into the slide guide grooves on both sides in the width direction of the fixing device and constrained to the stopper step portion. The protrusion is protruded, and the stopper protrusion includes a first stopper protrusion and a second stopper protrusion formed on the rear side and the front side of the fixing device with the bow elastic portion interposed therebetween, and the stopper stepped portion is the first stepped portion. And a first stopper step portion and a second stopper step portion respectively formed at the front end and the front end of the second step portion. However, the distance between the first stopper step portion and the second stopper step portion is formed to exceed the gap between the first stopper protrusion portion and the second stopper protrusion portion, and the first stopper protrusion portion has the first stopper step portion When the jam is inserted, a plurality of slit grooves are recessed forward in the rear part so as to be elastically deformed inward in the width direction, and in the first stopper protrusion part, an inclined insert surface is formed that extends outward in the width direction so that both sides are inclined toward the rear from the front side. , The second stopper protrusion is spaced apart from the inner wall surface of the slide guide groove at a predetermined distance, and the extension length of the first stopper step is less than the predetermined distance, and the extension length of the second stopper step Provides a circuit breaker equipped with a bow-type coupling device characterized in that it is formed in excess of the predetermined interval.

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

First, each free end of the elastic elastic bow elastic portion formed in the center portion of the fixing device is elastically inserted into the inclined restoration grooves formed on the inner wall surfaces of the first step portion and the second step portion of the coupling case portion, so that the fixing device is retracted. Since the slide is automatically restored to the front, the attachment and detachment with the DIN rail is quickly and conveniently performed, and the usability of use can be significantly improved.

Second, smooth and continuous impact deformation is formed through a bow elastic portion which is formed symmetrically from the fixed end of the fixing device and is convexly formed at a predetermined radius of curvature and the second elastic bend portion formed concavely is continuously bent. It is possible to improve the usability and the durability of the product can be significantly improved.

Third, at the lower end of each inner wall surface of the first stepped portion and the second stepped portion, each free end of the bow elastic portion is formed in the inclined restoration groove so that the inclined restoration grooves are recessed from the rear side to the front side to deepen the depression depth in both sides in the width direction. Since it is elastically inserted and flows smoothly, the usability is enhanced and the operational precision can be significantly improved.

Fourth, a plurality of stopper protrusions are extended and protruded on both sides of the fixing device, and are moved along slide guide grooves recessed on the inner wall surfaces of the first step and the second step, but stopper stepped portions formed on both sides in the front and rear directions of the slide guide groove. Since movement and departure are limited by, the operation precision can be significantly improved when the DIN rail is selectively detached.

1 is a perspective view showing a breaker equipped with a bow-type coupling device according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a breaker equipped with a bow-type coupling device according to an embodiment of the present invention.
Figure 3 is a perspective view showing the lower coupling state of the circuit breaker equipped with a bow-type coupling device according to an embodiment of the present invention.
Figure 4 is an exploded perspective view showing the lower coupling state of the circuit breaker equipped with a bow-type coupling device according to an embodiment of the present invention.
Figure 5a and 5b is a top view showing the state of use of the circuit breaker equipped with a bow-type coupling device according to an embodiment of the present invention.
Figures 6a and 6b is a cross-sectional example showing a state of use of the breaker equipped with a bow-type coupling device according to an embodiment of the present invention.

Hereinafter, a circuit breaker equipped with a bow-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 a bow-type coupling device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a circuit breaker with a bow-type coupling device according to an embodiment of the present invention, 3 is a perspective view showing a lower engagement state of a breaker equipped with a bow-type coupling device according to an embodiment of the present invention, and FIG. 4 is a lower engagement state of a circuit breaker equipped with a bow-type coupling device according to an embodiment of the present invention It is an exploded perspective view showing, Figures 5a and 5b is a top view showing the state of use of the circuit breaker equipped with a bow-type coupling device according to an embodiment of the present invention, Figures 6a and 6b is an embodiment of the present invention It is a cross-sectional example showing the state of use of the breaker equipped with a bow-type coupling device according to.

1 to 6B, the breaker 100 equipped with a bow-type coupling device according to an embodiment of the present invention includes a coupling case part 110, a DIN rail 120, and a fixing device 130. Includes.

Here, referring to Figure 1, the coupling case unit 110 is connected to the lower portion of the circuit breaker (1) for switching the connection of the electric line to cut off the current flow when the overcurrent exceeds a preset value. 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 fixed to each other.

On the other hand, referring to Figures 2 to 4, the lower portion of the coupling case portion 110 may be selectively mounted as it is fastened to the DIN rail 120. 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.

In detail, a pair of the first stepped portion 111 and the second stepped portion 112 are preferably protruded downward from the lower one side edge of the coupling case portion 110, respectively. In addition, it is preferable that the third stepped portion 113 is protruded downward to a height corresponding to the first stepped portion 111 and the second stepped portion 112 on the other lower side of the coupling case portion 110. . Here, it is preferable to understand that the lower surfaces of the first stepped portion 111, the second stepped portion 112, and the third stepped portion 113 are disposed opposite to the inner wall surface of the switchboard (not shown).

In addition, between the first stepped portion 111 and the second stepped portion 112, a fixing device insertion space s1 having both sides opened along the width direction n of the din rail portion 120 is formed. . At this time, the fixing device 130 is disposed in the fixing device insertion space s1.

In addition, between the first stepped portion 111 and the second stepped portion 112 and the third stepped portion 113, the sides are opened along the longitudinal direction (m) of the DIN rail portion 120 The rail insertion space s2 is formed. At this time, the DIN rail 120 is selectively disposed in the DIN rail insertion space s2. Here, the fixing device insertion space (s1) and the DIN rail insertion space (s2) is preferably understood as a space formed between the lower portion of the coupling case portion 110 and the switchboard (not shown).

In addition, at least one first catching projection 114 from the lower end of the inner wall surface of the third stepped portion 113 is provided on the coupling case portion 110, the first stepped portion 111 and the second stepped portion 112. ).

On the other hand, the din rail 120 is provided with a long elongated plate material is inserted through the longitudinal rail (m) in the din rail insertion space (s2), the width direction (n) is integrally bent extending on both sides of the agent A locking frame 121 is formed to be locked to each of the one catching protrusion 114 and the second catching protrusion 132 to be described later.

Here, the locking frame 121 may be formed to be bent in a form in which the ends extending obliquely upward from both ends in the width direction (n) of the DIN rail 120 extend in both directions in the width direction (n). At this time, the engaging case portion 110 is the DIN rail as the lower surface of the end portion of the locking frame 121 is selectively connected to the upper portion of the first locking projection 114 and the second locking projection 132. It can be fixed to 120.

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 moving along the longitudinal direction of the DIN rail (120).

On the other hand, the fixing device 130 is inserted from the outside of the coupling case portion 110 in the fixing device insertion space (s1) and is selectively moved to slide within a predetermined range.

In addition, a locking ring 131 is formed through the vertical direction of the rear end portion of the fixing device 130 to be exposed to the outside of the coupling case portion 110. At this time, the locking ring 131 is exposed to the outside of the coupling case portion 110 even when the fixing device 130 slides within a predetermined range toward the DIN rail 120 and is inserted to the maximum. It is desirable to understand.

In addition, the fixing device 130 is a second locking stone that is selectively locked and constrained by the locking frame 121 as the slide is moved toward the DIN rail 120 at the front end portion opposite to the first locking protrusion 114. The base 132 is formed. At this time, it is preferable that the lower surface of the locking frame 121 is selectively connected to the upper surface of the second locking protrusion 132.

Moreover, the lower portion of the second catching protrusion 132 may be formed to be inclined such that the width in the vertical direction becomes narrower toward the front end. Accordingly, when the DIN rail 120 is pressed against the inclined surface of the lower portion of the second locking protrusion 132 and inserted into the DIN rail insertion space s2, the fixing device 130 is coupled to the coupling case 110 After temporarily retreating to the outside of the can be re-advanced by the elastic restoring force.

Here, when the user pulls the locking ring 131, the second locking projection 132 is the Dean as the fixing device 130 slides outwardly of the coupling case 110 within a predetermined range. It is separated from the locking frame 121 of the rail 120. Accordingly, the coupling case portion 110 can be easily separated from the DIN rail 120.

Then, when the external force acting on the locking ring 131 is released in the state where the DIN rail 120 is disposed in the DIN rail insertion space s2, through the bow elastic portion 133 of the fixing device 130. The fixing device 130 is automatically restored to the slide toward the DIN rail (120). Through this, the locking frame 121 may be fixedly connected to the first locking projection 114 and the second locking projection 130.

On the other hand, referring to Figures 3 to 5b, the bow elastic portion 133 is formed to be bent in the central portion of the fixing device 130 of the first step 111 and the second step 112 It is preferably provided to be elastically inserted into the inner wall surface. The bow elastic portion 133 is preferably provided with an elastic material.

In addition, the bow elastic portion 133 is a fixed end (133a) formed extending in the front-rear direction in the lower center of the fixing device 130, and a pair of elastic bending parts that are integrally connected to the fixed end (133a) to be freely deformed It is preferable to include (133b, 133c). At this time, each of the elastic bent portion (133b, 133c) is integrally extended so as to be symmetrical to both sides from the front end of the fixed end (133a), each free end (133d) is the first step portion 111 and the second step portion It is preferable that it is elastically pressed to each inner wall surface of (112).

Here, it is preferable that each of the elastic bent portions 133b and 133c is integrally extended so as to be symmetrical to both sides from the fixed end 133a and bent and extended toward the outer direction of the coupling case portion 110. In addition, the width between each free end 133d of the bow elastic portion 133 extending bent toward the outside direction of the coupling case portion 110 is formed to exceed the width of the fixing device insertion space s1. This is preferred. In addition, it is preferable that each free end 133d of the bow elastic portion 133 is elastically pressed to each inner wall surface of the first step portion 111 and the second step portion 112.

In detail, each of the elastic bent portions 133b and 133c is formed in an 'S' shape so that an end side fixed during elastic deformation is integrally connected to the fixed end 133a, and an elastically moved end during elastic deformation, that is, the It is preferable that each free end 133d of the bow elastic portion 133 is elastically inserted into the inclined restoration grooves 111a and 112a.

In addition, the elastic bent portions 133b and 133c are formed to extend integrally and symmetrically from the fixed end 133a, but the first step portion 111 and the second step portion 112 have a predetermined radius of curvature. It is preferable to include a pair of first elastic bent portions 133b formed convexly toward each inner wall surface. At this time, each outer surface of the first elastic bent portion 133b may be elastically pressed to each inner wall surface of the first stepped portion 111 and the second stepped portion 112.

In addition, the elastic bent portions 133b and 133c include a pair of second elastic bent portions 133c that are integrally extended from each of the first elastic bent portions 133b and concavely formed in opposite directions so as to have a predetermined radius of curvature. Preferably. At this time, the mutually opposite directions of the second elastic bent portion 133c are preferably understood in the same direction as the inner side in the width direction of the fixing device 130 and the inner side in the longitudinal direction (m) of the coupling case portion. Here, the ends of each of the second elastic bent portions 133c are preferably formed as free ends 133d which are freely deformed as they are elastically pressed.

At this time, in one embodiment of the present invention, the elastic bent portion (133b, 133c) is illustrated and described as an example in which the first elastic bent portion (133b) and the second elastic bent portion (133c) is configured to be bent in a double way. It is not limited. For example, the elastic bent portion may be configured to be bent multiple times.

In addition, each free end 133d of the second elastic bent portion 133c may be formed as an outer contour with a round outer contour so as to be smoothly moved while being elastically inserted into the inclined restoration grooves 111a and 112a described later. At this time, the free end 133d of the bow elastic portion 133, the free end 133d of the elastic bending portions 133b and 133c, and the free end 133d of the second elastic bending portion 133c mean the same portion.

Accordingly, the elastic bent portions 133b and 133c are formed symmetrically from the fixed end 133a of the fixing device 130, but concavely formed with a pair of first elastic bent portions 133b convexly formed to have a predetermined radius of curvature. As a pair of second elastic bent portions 133c, it extends to bend continuously. Accordingly, since the fixing device 130 continuously provides a stable elastic restoring force that is automatically returned to the initial position in the retracted state of the coupling case portion 110, the operational reliability of the product can be remarkably improved. In addition, through the bow elastic portion 133 in which a pair of first elastic bent portions 133b and a pair of second elastic bend portions 133c are continuously bent and extended, a smooth and continuous elastic deformation is possible, thereby improving the usability and improving the product. The durability of can be significantly improved.

In addition, since the coil springs are separately provided and mounted, the elastic bent portions 133b and 133c are integrally provided in the fixing device 130, so that the separation of the coil springs is prevented beforehand, so the usability of the product is significantly improved. Can be.

And, at the lower end of each inner wall surface of the first stepped portion 111 and the second stepped portion 112, the inclined restoring groove deepens the depression depth from the rear side to the front side toward both sides in the width direction of the fixing device 130 ( It is preferable that 111a and 112a) are recessed, respectively.

In this case, the inclined restoration grooves 111a and 112a are recessed in the inner wall surface of the first inclined restoration groove 111a and the second inclined restoration part 111a, which are recessed in the inner wall surface of the first stepped part 111. It is preferable to include a second inclined restoration groove (112a) is formed. In addition, the first inclined restoration groove (111a) and the second inclined restoration groove (112a) is formed in a symmetrical position with each other is preferably disposed opposite to each other with the fixing device insertion space (s1) therebetween.

Accordingly, as each free end 133d of the bow elastic portion 133 is elastically inserted into the inclined restoration grooves 111a and 112a, the fixing device 130 is coupled to the coupling case portion 110 by elastic restoration force. ) Can be automatically restored to the front in the retracted state to the outside.

Therefore, as the inclined restoration grooves 111a and 112a move from the rear side to the front side at the bottom of each inner wall surface of the first stepped portion 111 and the second stepped portion 112, the depth of depression in both sides in the width direction becomes deeper. Each recess is formed, and each free end 133d of the bow elastic portion 133 is elastically inserted into the inclined restoring grooves 111a and 112a to flow smoothly, so that the usability is enhanced and the operation precision can be remarkably improved.

In detail, referring to FIG. 5A, the second locking protrusion 132 is inserted into the DIN rail insertion space s2 while the fixing device 130 is advanced forward toward the DIN rail insertion space s2. do.

At this time, it is preferable that each free end 133d of the bow elastic portion 133 is disposed on the front end side of each of the inclined restoration grooves 111a and 112a to be locked. Moreover, it is preferable that the front end of each of the inclined restoration grooves 111a and 112a is formed with a matching engagement groove with an inner surface contour corresponding to the outer surface contour of each free end 133d of the bow elastic portion 133.

Through this, the fixing device 130 slides toward the DIN rail 120 so that each of the bow elastic portions 133 while the second catching protrusion 132 is hooked to the locking border 121 The free end 133d may be fixed to the mold engaging groove.

In addition, referring to FIG. 5B, when the user pulls the locking ring 131, each free end of the bow elastic portion 133 while the fixing device 130 is retracted outward of the coupling case portion 110. It is preferable that (133d) is disposed at the rear end side of each of the inclined restoration grooves 111a and 112a.

Here, as each of the inclined restoration grooves 111a and 112a goes from the rear side to the front side, the depth of depression of the fixing device 130 toward both sides in the width direction becomes deeper, so that the fixing device 130 of the coupling case portion 110 Each free end 133d of the bow elastic portion 133 is elastically deformed in the width direction as it retreats outward. At this time, each free end 133d of the bow elastic portion 133 is elastically deformed inward in the width direction, and elastic restoring force in both sides in the width direction acts.

Accordingly, when the external force that the fixing device 130 is pulled out of the coupling case portion 110 is released, each free end of the bow elastic portion 133 by the elastic restoring force of the bow elastic portion 133 The fixing device 130 may be advanced forward toward the din rail insertion space s2 in a state where (133d) is elastically pressed to each of the inclined restoration grooves 111a and 112a.

As described above, each free end 133d of the elastic elastic bow elastic portion 133 formed to be bent in the central portion of the fixing device 130 includes the first step 111 and the second step 112. It is elastically inserted into the inclined restoration grooves 111a and 112a formed on the inner wall surface. Accordingly, since the fixing device 130 is automatically restored to the front in the retracted state, the attachment and detachment between the breaker 1 and the DIN rail 120 can be quickly and conveniently performed, thereby significantly improving usability.

Meanwhile, referring to FIGS. 3 to 4 and FIGS. 6A and 6B, the inclined restoring grooves 111a and 112a are formed at the top of each inner wall surface of the first stepped portion 111 and the second stepped portion 112. And it is preferable that the slide guide grooves 111b and 112b spaced apart in the vertical direction are recessed in both sides in the width direction.

At this time, the slide guide groove (111b, 112b) is a first slide guide groove (111b) that is recessed formed on the top of the inner wall surface of the first stepped portion (111), and the top of the inner wall surface of the second stepped portion (112) It is preferable to include a second slide guide groove (112b) formed in the depression.

Here, each of the slide guide grooves 111b and 112b is preferably formed to extend along the front-rear direction at the top of each inner wall surface of the first stepped portion 111 and the second stepped portion 112. At this time, it is preferable that a plurality of stopper step portions 111c, 111d, 112c, and 112d are formed on both sides of the slide guide grooves 111b, 112b in the front-rear direction.

In detail, the stopper step portions 111c, 111d, 112c, and 112d are first stopper step portions 111c, 112c formed on the rear and front sides of the first step portion 111 and the second step portion 112, respectively. ) And the second stopper step portions 111d and 112d. In this case, the first stopper step portions 111c and 112c may be integrally extended in the width direction from the rear end of the first step portion 111 and the second step portion 112, respectively. Further, the second stopper step portions 111d and 112d may extend integrally in the width direction from the front end of the first step portion 111 and the second step portion 112, respectively.

Here, it is preferable that the length in the width direction of the first stopper step portions 111c and 112c is less than the length in the width direction of the second stopper step portions 111d and 112d. That is, the interval between the first stopper steps 111c and 112c respectively formed on each rear side of the first stepper part 111 and the second stepper part 112 is the first stepper part 111 and the It is preferable that it is formed larger than the interval between each of the second stopper step portions 111d and 112d formed on each front side of the second step portion 112. In this case, an interval between the second stopper step portions 111d and 112d may be formed at an interval substantially corresponding to the width of the second catching protrusion 132.

On the other hand, a plurality of stopper protrusions (134a, 134b) that are inserted into the slide guide grooves (111b, 112b) on both sides in the width direction of the fixing device 130 and are constrained to the stopper step portions (111c, 111d, 112c, 112d). , 135a, 135b) is preferably extended protruding.

Here, the stopper protrusions (134a, 134b, 135a, 135b) is the first stopper protrusions (134a, 134b) are formed on the rear and front sides, respectively, of the fixing device 130 with the bow elastic portion (133) therebetween. ) And the second stopper protrusions 135a and 135b. At this time, the first stopper protrusions 134a and 134b are formed on the rear side of the fixing device 130, and the second stopper protrusions 135a and 135b are preferably formed on the front side of the fixing device 130. In addition, it is preferable that the length of the first stopper protrusions 134a and 134b exceeds the length of the second stopper protrusions 135a and 135b.

At this time, as the stopper protrusions 134a, 134b, 135a, and 135b are inserted and guided in each of the slide guide grooves 111b and 112b, the fixing device 130 selectively moves in the forward and backward directions within a predetermined range. Can be. In addition, as the stopper protrusions 134a, 134b, 135a, and 135b are inserted into each of the slide guide grooves 111b and 112b, the fixing device 130 is constrained in the vertical direction and the lower side of the coupling case portion 110 It can be prevented from deviating.

In addition, a plurality of slit grooves 134c, 134d are provided at the rear side so as to be elastically deformed in the width direction when the first stopper protrusions 134a, 134b are inserted into the first stopper step portions 111c, 112c. It is preferred that the depression is formed.

In addition, it is preferable that the first stopper protrusions 134a and 134b are formed with inclined inserting surfaces extending from the front side to the rear side so as to be inclined to the outside in the width direction.

Accordingly, when the fixing device 130 is inserted into the fixing device insertion space s1 from the outside of the coupling case portion 110, the inclined insertion surfaces formed on both side surfaces of the first stopper protrusions 134a and 134b are formed. When pressed by the first stopper step portions 111c and 112c, both sides of the first stopper protrusions 134a and 134b may be elastically contracted inward in the width direction by the slit grooves 134c and 134d.

In addition, when the first stopper protrusions 134a and 134b are completely inserted into the slide guide grooves 111b and 112b, both sides of the first stopper protrusions 134a and 134b may be elastically restored to the outside in the width direction. Therefore, when the fixing device 130 is inserted into the fixing device insertion space s1, assembly can be easily performed with minimal external force, thereby improving assembly and manufacturing convenience.

Through this, the rear rim of the first stopper protrusions 134a and 134b is selectively caught on the front surface of the first stopper protrusions 134a and 134b so that the fixing device 130 is outside the coupling case portion 110. Deviation can be prevented.

In addition, the second stopper protrusions 135a and 135b have a front surface selectively locked to the rear surface of the second stopper step portions 111d and 112d, so that the second locking protrusion 132 is the DIN rail insertion space (s2). The degree of insertion into can be limited.

In addition, it is preferable that the second stopper protrusions 135a and 135b are spaced apart at predetermined intervals from the inner wall surfaces of the slide guide grooves 111b and 112b. Here, the extended length of the first stopper stepped portions 111c and 112c is formed to be less than the predetermined gap, which is an interval between the second stopper protrusions 135a and 135b and the inner wall surfaces of the slide guide grooves 111b and 112b. This is preferred. Moreover, the breaker with a bow-type coupling device is characterized in that the extended lengths of the second stopper step portions 111d and 112d are formed in excess of the predetermined interval.

Accordingly, when the fixing device 130 is inserted into the fixing device insertion space s1 from the outside of the coupling case portion 110, the second stopper protrusions 135a and 135b are provided with the first stopper step portion ( It may be disposed on the rear side of the second stopper step portion (111d, 112d) passing through the inner side in the width direction of 111c, 112c).

Meanwhile, an interval between the first stopper step portions 111c, 112c and the second stopper step portions 111d, 112d is such that the fixing device 130 slides selectively along the front-rear direction within a predetermined range. The first stopper protrusions 134a, 134b and the second stopper protrusions 135a, 135b are preferably formed to exceed the distance between them.

In detail, referring to FIG. 6A, the second locking protrusion 132 is inserted into the DIN rail insertion space s2 while the fixing device 130 is advanced forward toward the DIN rail insertion space s2. do.

Here, as the front surface of the second stopper protrusions 135a and 135b is in contact with the rear surface of the second stopper stepped portions 111d and 112d, the second catching protrusion 132 is inserted into the DIN rail insertion space ( s2) may be limited.

In addition, referring to FIG. 6B, when the user pulls the locking ring 131, the first stopper protrusions 134a and 134b are rear rims as the fixing device 130 is retracted to the outside of the coupling case part 110. May be caught on the front surfaces of the first stopper protrusions 134a and 134b. Accordingly, it can be prevented that the fixing device 130 is separated from the outside of the coupling case portion 110.

Accordingly, a plurality of stopper protrusions 134a, 134b, 135a, and 135b are extended and protruded on both sides in the width direction of the fixing device 130, so that each of the first step 111 and the second step 112 is extended. It slides along the slide guide grooves 111b and 112b that are recessed at the top of the inner wall surface, but is moved by the stopper step portions 111c, 111d, 112c, and 112d formed on both sides of the slide guide grooves 111b and 112b. Since the separation is limited, the operation precision can be remarkably improved when the DIN rail 120 is selectively detached from the lower portion of the coupling case portion 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: a breaker equipped with a bow-type coupling device 110: coupling case unit
111: first stepped portion 111a: first slope restoration groove
111b: First slide guide groove 112: Second step
112a: 2nd slope restoration home 112b: 2nd slide guide home
113: third stepped portion 114: first catching projection
120: DIN-rail 121: hanging border
130: fixing device 131: hook
132: second catching projection 133: bow elastic part
134c, 134d: slit groove

Claims (5)

It 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 predetermined value, a pair of the first step portion and the second step portion is protruded downwardly, respectively, on the lower side edge, A fixing device insertion space opened in a width direction is formed between the first step portion and the second step portion, and the third step portion is protruded downwardly on the other side of the lower portion, and the first step portion, the second step portion, and the second step portion are protruded downward. A din rail insertion space having both sides open in the longitudinal direction between the three stepped portions is formed, and a first catching protrusion is protruded from the lower end of the inner wall surface of the third stepped portion toward the first stepped portion and the second stepped portion. Coupling case unit;
A din rail provided with a long elongated plate material and inserted through the length of the din rail insertion space along a longitudinal direction, and integrally bent and extended to both sides in the width direction to form a locking frame that is locked to the first catching protrusion; And
It is inserted into the fixing device insertion space from the outside of the coupling case portion and selectively slides within a predetermined range, a locking ring is formed at the rear end, exposed to the outside of the coupling case portion, and facing the first catching projection portion. As the slide is moved to the front end, a second locking projection is formed to selectively engage and constrain the locking frame, and is formed to be bent in the center, and elastically inserted into the inner wall surfaces of the first step and the second step. It includes a fixing device provided with a bow elastic portion,
The bow elastic portion includes a fixed end formed in the lower center of the fixing device, and a pair of elastic bending portions connected to the fixed end and provided with multiple bends to be freely deformed,
The elastic bent portion extends symmetrically from the fixed end but has a pair of first elastic bent portions formed convexly toward the inner wall surfaces of the first step portion and the second step portion so as to have a predetermined radius of curvature, and each of the first It includes a pair of second elastic bends which are formed to be concave in mutually opposite directions so as to have a predetermined radius of curvature that is continuously bent from the elastic bends, and a free end is formed at the ends, respectively, and each other of the first elastic bends The side surface is elastically pressed to each inner wall surface of the first stepped portion and the second stepped portion,
Each of the free ends is elastically pressed to each inner wall surface of the first step portion and the second step portion, and the width between each free end is formed to exceed the width of the fixing device insertion space, and the first step portion And an inclined restoration groove in which the depression depth from the rear side to the front side becomes deeper toward the front and rear sides so that the free ends are elastically inserted and the slides are automatically retracted in the retracted state at the bottom of each inner wall surface of the second stepped portion. Each of which is recessed,
At the upper end of each inner wall surface of the first step portion and the second step portion, the slide guide grooves spaced apart in the vertical direction from the inclined restoration grooves are recessed in both sides in the width direction, and stopper step portions are provided in both front and rear directions of the slide guide grooves. Each of which is formed, and a plurality of stopper protrusions inserted into the slide guide grooves and constrained to the stopper step portions are protruded on both sides in the width direction of the fixing device,
The stopper protrusion includes a first stopper protrusion and a second stopper protrusion formed on the rear side and the front side of the fixing device with the bow elastic portion therebetween, and the stopper step portion includes the first step portion and the second step portion. It includes a first stopper step portion and a second stopper step portion formed on the front end and the front end, respectively, the distance between the first stopper step portion and the second stopper step portion is a gap between the first stopper protrusion and the second stopper protrusion Is formed to exceed,
A plurality of slit grooves are recessed forward in the rear portion so as to be elastically deformed inward in the width direction when the first stopper protrusion is inserted into the first stopper protrusion portion. The inclined insert surface is formed to extend outwardly in the width direction.
The second stopper protrusion is spaced apart from a predetermined distance from the inner wall surface of the slide guide groove, and the extension length of the first stopper step is less than the predetermined distance, and the extension length of the second stopper step is A breaker equipped with a bow-type coupling device, characterized in that it is formed in excess of the predetermined interval. delete delete delete delete

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