A special circuit breaker buckle structure is installed on the guide rail

Abstract

This utility model relates to the technical field of circuit breaker installation structures, specifically to a dedicated circuit breaker latching structure for mounting on a guide rail. Key technical features include contact surfaces between the latch, guide rail, and circuit breaker. These include latching grooves on the left and right sides above the contact surface between the circuit breaker housing and the guide rail, providing sliding space for the latch. The distance between the underside of the front face of the left and right latching grooves and the underside of the guide rail's locking surface along one side of the guide rail, which is secured to the circuit breaker housing, is a pre-reserved dimension according to the guide rail specifications. The front ends of the left and right latching grooves have a protruding, chamfered, trapezoidal upper surface, and the rear ends of the left and right latching grooves have an upper surface. Above the middle of the left and right latching grooves, two latching feet of the plastic spring slide past, successively contacting the front, middle, and rear faces to form triangular protrusions at different angles. This utility model, when mounted on a guide rail, provides a clamping and stabilizing function; it also provides an arc-blocking function during circuit breaker arc suppression; and it provides a stopping and limiting function during installation and disassembly.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit breaker installation structures, specifically to a dedicated circuit breaker clip structure for installation on a guide rail. Background Technology

[0002] Multi-pole electromagnetic residual current circuit breakers are very common in China. However, most domestic manufacturers produce circuit breakers with large swaying when the clips are mounted on the guide rail (35mm guide rail). When multiple circuit breakers are connected to the power cord, they result in an uneven arrangement, affecting aesthetics. In addition, when designing the circuit breaker, the left and right slots for the clip sliding are arranged below the contact surface between the circuit breaker housing and the guide rail, occupying the arc-extinguishing space and affecting the arc-extinguishing capability of the circuit breaker. When the circuit breaker is installed in a lighting box, the bottom of the clip is close to the metal shell of the lighting box. When the load line is short-circuited, the generated arc is directly discharged to the metal shell of the lighting box, which can easily cause secondary short circuits and sparks. Utility Model Content

[0003] To address the technical problems and shortcomings of existing technologies, this invention provides a dedicated circuit breaker clip structure for mounting on a guide rail. When mounted on a 35mm guide rail, it serves to clamp and stabilize the rail; it also provides arc-blocking during circuit breaker arc suppression; and it provides movement stop and limit during installation and disassembly.

[0004] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0005] A dedicated circuit breaker latching structure for mounting on a guide rail includes a latch, a guide rail, and a contact surface for contacting the circuit breaker. It includes latching grooves on the left and right sides above the contact surface between the circuit breaker housing and the guide rail, providing sliding space for the latch. The distance between the underside of the reverse side of the front end of the left and right latching grooves and the underside of the guide rail latching surface along one side of the guide rail that latches onto the circuit breaker housing is a pre-reserved dimension according to the guide rail specifications. Locking strips are provided on the inner sides of both sides of the latch.

[0006] It also includes: a protruding, beveled, trapezoidal upper surface at the front end of the left and right slots, and an upper surface at the rear end of the left and right slots.

[0007] The upper middle part of the left and right slots is provided with two locking feet of plastic springs that, when they slide through, contact the front, middle and rear surfaces of the locking feet in turn to form triangular protrusions at different angles.

[0008] Preferably, four buckle push-limiting surfaces are provided at the front and rear ends of the left and right slots above the contact surface between the circuit breaker and the guide rail, and there are left and right symmetrical buckle pull-out limiting surfaces and left and right symmetrical arc-removing holes.

[0009] Preferably, a locking strip is provided on the inner side of both sides of the buckle, and the locking strip includes short lines protruding from the front end, short lines recessed, and long lines protruding from the rear end, which are symmetrically arranged on the left and right sides.

[0010] The buckle head has four tongue-connected bevels, and four locking surfaces are located below the four tongues. The locking surfaces are engaged with the other side of the guide rail along the edge.

[0011] In the middle of the buckle, there are two symmetrical plastic spring feet, symmetrical stop surfaces at the front and rear of the push-in, symmetrical stabilizing surfaces for up-and-down swaying, and symmetrical stop points on the inclined surfaces to prevent the buckle from detaching from the circuit breaker and falling when pulled out. The oval hole at the end is for turning with a screwdriver.

[0012] When the circuit breaker is installed on the guide rail, the arc-extinguishing hole of the circuit breaker corresponds to the arc-blocking surface with arc-extinguishing space on the buckle.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, when installed on a specified guide rail, has the function of clamping and stabilizing the guide rail; it has the function of blocking arcs during circuit breaker arc extinguishing; and it has the function of stopping and limiting movement during installation and disassembly.

[0015] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or from practice of this application. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the snap-fit ​​installation on the circuit breaker according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of a circuit breaker installed on a guide rail;

[0019] Figure 3 This is a schematic diagram showing the latch being pulled out and stopped at the limit surface of the circuit breaker;

[0020] Figure 4 This is a 3D schematic diagram of a 35mm guide rail;

[0021] Figure 5 This is a three-dimensional schematic diagram of the first part of the circuit breaker slot surface;

[0022] Figure 6 This is a three-dimensional schematic diagram (and a partial enlarged view) of the second part of the circuit breaker slot surface;

[0023] Figure 7 This is a three-dimensional schematic diagram of the third part of the circuit breaker slot surface;

[0024] Figure 8 This is a 3D schematic diagram of the first part of the buckle;

[0025] Figure 9 This is a 3D diagram of the second part of the buckle;

[0026] Figure 10 This is a 3D diagram of the third part of the buckle.

[0027] Explanation of reference numerals for major components:

[0028] 1. Buckle;

[0029] 1a. A short protruding line 1a at the front end of the latching strip; 1b. A short protruding line 1b at the front end of the latching strip; 1c. A short line 1c recessed in the middle; 1d. A short line 1d recessed in the middle; 1e. A long protruding line 1e at the rear end; 1f. A long protruding line 1f at the rear end; 1g. An inclined surface 1g for the tongue connection; 1h. A locking surface 1h; 1i. A locking surface 1i; 1j. A locking surface 1j; 1k. A locking surface 1k; 1m. A locking foot 1m; 1n. A locking foot 1n; 1p. A stop surface for the front and rear end advances; 1 q, Stop surface 1q for front and rear end propulsion; 1r, Stop surface 1r for front and rear end propulsion; 1s, Stop surface 1s for front and rear end propulsion; 1t, Stable surface 1t on the buckle that sways symmetrically left and right and up and down; 1u, Stable surface 1u on the buckle that sways symmetrically left and right and up and down; 1v, Stable surface 1v on the buckle that sways symmetrically left and right and up and down; 1w, Stable surface 1w on the buckle that sways symmetrically left and right and up and down; 1x, Stop point 1x when the arc surface is pulled out; 1y, Oval hole at the end of the buckle for screwdriver to pry open; 1z, Arc-blocking surface 1z in the arc space;

[0030] 2. Guide rail;

[0031] 2a. One side of the guide rail; 2b. The other side of the guide rail;

[0032] 3. Outer shell;

[0033] 3a, Left and right slots 3a; 3b, Left and right slots 3b; 3c, Lower side of the reverse face of the front end of the left and right slots 3c; 3d, Lower side of the reverse face of the front end of the left and right slots 3d; 3e, Guide rail positioning surface 3e; 3f, Short line surface 3f; 3g, Short line surface 3g; 3h, Surface above the rear end of the left and right slots 3h; 3i, Surface above the rear end of the left and right slots 3i; 3j, Boss 3j, 3k, Boss 3k, 3m, Front and rear end pushing limiting surface 3m; 3n, Front and rear end pushing limiting surface 3n; 3p, Front and rear end pushing limiting surface 3p; 3q, Front and rear end pushing limiting surface 3q; 3r, Buckle pull-out limiting point 3r; 3s, Buckle pull-out limiting point 3s; 3t, Arc discharge hole 3t; 3u, Arc discharge hole 3u. Detailed Implementation

[0034] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. The following specific examples illustrate the embodiments of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0035] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0036] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, it should be noted that in the description of this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the invention based on the specific circumstances.

[0037] Example:

[0038] This invention relates to a dedicated circuit breaker clip structure for mounting on a 35mm guide rail. Combined with... Figure 1 - Figure 10 To understand.

[0039] This solution includes a contact surface between the latch, guide rail, and circuit breaker. The latch is positioned above the contact surface and includes slots on the left and right sides of the circuit breaker housing for sliding of the latch. The distance 3c and 3d below the reverse side of the front end of the left and right slots and 3e below the guide rail locking surface on one side of the guide rail along edge 2a is the reserved dimension for the guide rail specification. For a 35mm guide rail, a reserved dimension of 35.1mm can be provided. The other side of the guide rail is guide rail 2b. It first contacts and engages with the four tongues on the head of the buckle via the inclined surface 1g, and then contacts and engages with the clamping surfaces 1h, 1i, 1j, and 1k. The left and right slots 3a and 3b on the circuit breaker housing are formed by the short lines 1a and 1b protruding from the front end of the buckle, the short lines 1c and 1d recessed in the middle, and the long lines 1e and 1f protruding from the rear end, which engage and slide in sequence. The distance between the underside of the front end of the left and right slots 3c and 3d and the clamping surface 3e of the guide rail on one side 2a of the guide rail on the circuit breaker housing is 35.1mm, which restricts the left and right swaying of the guide rail. The short line surfaces 3f and 3g are provided above the front end of the left and right slots, and the surfaces 3h and 3i above the rear end of the left and right slots are symmetrical to the buckle. The swaying, stabilizing surfaces 1t, 1u, 1v, and 1w make zero contact to secure the buckle. The bosses 3j and 3k above the middle of the left and right slots make contact with the two locking feet 1m and 1n of the plastic spring on the buckle when they are pushed in. The limiting surfaces 3m, 3n, 3p, and 3q on the circuit breaker housing make contact with the stopping surfaces 1p, 1q, 1r, and 1s on the buckle when they are pushed in. When the buckle on the circuit breaker housing is pulled out, the limiting points 3r and 3s on the buckle contact the stopping point 1x on the arc surface of the buckle. The buckle has an elliptical hole 1y at the tail end for screwdriver to move. The symmetrical arc-expelling holes 3t and 3u on the circuit breaker housing and the arc-blocking surface 1z on the buckle with arc-expelling space are combined.

[0040] Operating Scenario 1: When the clip is installed on the circuit breaker, first, gradually insert the clip strips (including short protruding lines 1a and 1b at the front, short recessed lines 1c and 1d in the middle, and long protruding lines 1e and 1f at the rear) into the slots 3a and 3b on the left and right sides of the circuit breaker housing. At this time, the stop point 1x pulled out by the arc surface of the clip contacts the limit points 3r and 3s pulled out on the circuit breaker housing. Next, push the stop point 1x pulled out by the arc surface of the clip inward by hand until it slides past the limit points 3r and 3s pulled out on the housing. Then, push it inward forcefully until the plastic spring clips 1m and 1n on the clip slide. The protrusions 3j and 3k on the left and right inner sides of the circuit breaker housing are at their front and middle ends and then stop at the rear end. Finally, the stabilizing surfaces 1t, 1u, 1v, and 1w on the buckle, which symmetrically sway up and down, make zero contact with the short line surfaces 3f and 3g above the front end of the left and right slots, the surface 3h above the rear end of the left and right slots, and the surface 3i above the rear end of the left and right slots, thus achieving a stabilizing effect. The stopping surfaces 1p, 1q, 1r, and 1s on the buckle, which move forward and backward, contact the limiting surfaces 3m, 3n, 3p, and 3q on the circuit breaker housing and stop moving forward. The buckle installation is complete.

[0041] Operating Scenario 2: When the circuit breaker is installed on the guide rail, first, insert one side 2a of the guide rail into the locking surface 3e of the circuit breaker, and press the other side 2b of the guide rail onto the four tongue connecting inclined surfaces 1g of the buckle and press down firmly. Press down the locking surfaces 1h, 1i, 1j, and 1k of the buckle to contact and lock with the other side 2b of the 35mm guide rail along the edge. At this time, the two locking feet 1m and 1n of the plastic spring on the buckle will retract back to the middle of the left and right inner bosses 3j and 3k on the circuit breaker housing to form an expansion force. At the same time, the stop surfaces 1p, 1q, 1r, and 1s of the buckle at the front and rear ends of the push-in movement will retract slightly away from the corresponding push-in limiting surfaces 3m, 3n, 3p, and 3q on the circuit breaker housing. The circuit breaker installation is now complete.

[0042] Operation Scenario 3: When the circuit breaker needs to be removed from the guide rail, insert the screwdriver into the oval hole 1y at the end of the buckle and pull it backward; at this time, the arc surface on the buckle pulls out the stop point 1x and stops on the circuit breaker housing. The left and right symmetrical buckle pull-out limit points 3r and 3s prevent the buckle from falling off the circuit breaker. Finally, take out the circuit breaker according to the housing diagram.

[0043] Scenario 4: When a finished circuit breaker needs to be reworked, grasp the round end of the buckle with your hand and pull the buckle until the arc surface on the buckle stops at the 1x stop point and stops at the limit points 3r and 3s on the circuit breaker housing. At this time, the buckle is locked. Then, squeeze the buckle to the left or right. At this time, the short recessed lines 1c and 1d on the buckle will move aside. Then, push the end of the buckle upward with your hand and twist the buckle so that the arc surface on the buckle pulls the stop point 1x past the symmetrical limit points 3r and 3s on the circuit breaker housing. Finally, easily remove the buckle.

[0044] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dedicated circuit breaker latching structure for mounting on a guide rail, comprising a latch (1), a guide rail (2), and a contact surface for contacting the circuit breaker, characterized in that, The buckle (1) is set above the contact surface, including the buckle grooves (3a, 3b) on the left and right sides of the circuit breaker housing (3) for buckle sliding. The distance between the lower side (3c, 3d) of the front end face of the left and right buckle grooves and the lower side (3e) of the guide rail clamping surface on the circuit breaker housing along the edge of the guide rail is the reserved size of the guide rail specification. The buckle is provided with a clamping strip on the inner side of both sides. It also includes: a protruding, chamfered trapezoidal upper surface (3f, 3g) at the front end of the left and right card slots and an upper surface (3h, 3i) at the rear end of the left and right card slots. The upper middle part of the left and right slots is provided with two locking feet of plastic springs for the locking buckle to slide through and successively contact the front, middle and rear surfaces to form triangular protrusions (3j, 3k) at different angles.

2. The dedicated circuit breaker clip structure for mounting on a guide rail according to claim 1, characterized in that, There are four buckle push-in limiting surfaces (3m, 3n, 3p, 3q) at the front and rear ends of the left and right card slots, and there are left and right symmetrical buckle pull-out limiting surfaces (3r, 3s) and left and right symmetrical arc discharge holes (3t, 3u).

3. The dedicated circuit breaker clip structure for mounting on a guide rail according to claim 1, characterized in that, The card strip includes short lines (1a, 1b) that protrude from the front end, short lines (1c, 1d) that are recessed, and long lines (1e, 1f) that protrude from the rear end, which are symmetrically arranged on the left and right sides. The buckle (1) has four tongue-connected inclined surfaces (1g) at its head, and four locking surfaces (1h, 1i, 1j, 1k) below the four tongues. The locking surfaces (1h, 1i, 1j, 1k) are locked together with the other side of the guide rail along the edge. In the middle of the buckle (1), there are two symmetrical plastic spring feet (1m, 1n), symmetrical stop surfaces (1p, 1q, 1r, 1s) for pushing forward and backward, symmetrical stabilizing surfaces (1t, 1u, 1v, 1w) for swaying up and down, and symmetrical stop points (1x) for pulling out the inclined plane to prevent the buckle from detaching from the circuit breaker and falling when it is pulled out. The elliptical hole (1Y) at the tail end is for turning with a screwdriver. When the circuit breaker is installed on the guide rail (2), the arc-extinguishing hole of the circuit breaker corresponds to the arc-blocking surface (1z) with arc-extinguishing space on the buckle.

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