A low voltage circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to a low-voltage circuit breaker. The low-voltage circuit breaker is assembled on a support plate, and a slide rail is arranged on the support plate. The low-voltage circuit breaker comprises a first body, two first clamping springs, a second body, at least two clamping mechanisms, two pushing parts and a positioning mechanism. The first end of the first clamping spring is suspended, and the second end is arranged on the first body. The first clamping spring can swing around the second end in a direction away from the slide rail under the action of its own elasticity. The pushing part is configured to drive the first clamping spring to swing around the second end in a direction close to the slide rail when the second body approaches the first body, so as to fix the second body on the slide rail through the two first clamping springs. The positioning mechanism is used to change the position of the second body on the first body, so as to change the relative position between the pushing part and the first clamping spring, so as to realize the rapid assembly and disassembly of the low-voltage circuit breaker by pressing, fixing and unlocking.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a low-voltage circuit breaker. Background Art

[0002] Low-voltage circuit breakers usually refer to circuit breakers with rated voltages below AC 1200V and DC 1500V. They are important low-voltage electrical equipment. Their main functions include controlling the on and off of circuits, overload protection, short-circuit protection, undervoltage protection, and leakage protection. They are widely used in low-voltage power distribution systems.

[0003] In the related art, for example, Chinese patent CN217114269U discloses a low-voltage circuit breaker with a reinforcement mechanism. When in use, the low-voltage circuit breaker with a reinforcement mechanism is connected to the bracket by screws passing through the mounting holes, and the circuit breaker is installed on the bracket. The moving slide drives the support block, the second screw and the clamping plate to move vertically, and the clamping plate is adjusted to the rear side of the bracket. The rotating bolt is in close contact with the support rail to fix the slide. The second knob is rotated to drive the second screw to rotate, so that the second screw drives the clamping plate to move forward, and the clamping plate moves to clamp and fix the bracket, thereby reinforcing the circuit breaker.

[0004] Although the above-mentioned low-voltage circuit breaker with a reinforcement mechanism can improve the connection stability between the circuit breaker and the bracket, it is found that during the actual disassembly and assembly process, it is necessary to turn both the screw and the second screw, which makes the disassembly and assembly process not only cumbersome but also extremely time-consuming and labor-intensive, thereby greatly reducing the installation efficiency and maintenance efficiency. Summary of the invention

[0005] Based on this, it is necessary to provide a low-voltage circuit breaker to address the problems of troublesome operation and time-consuming and labor-intensive operation during the disassembly and assembly process of the current low-voltage circuit breaker.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A low-voltage circuit breaker is configured to be assembled on a support plate, and a slide rail is provided on the support plate; the low-voltage circuit breaker comprises:

[0008] The first body is sleeved on the slide rail when installed and can slide along the slide rail;

[0009] Two first clamping springs are both arranged on the first body and are respectively located on both sides of the slide rail, the first end of the first clamping spring is suspended, and the second end is arranged on the first body, and the first clamping spring can swing around the second end in a direction away from the slide rail under the action of its own elasticity;

[0010] A second body, disposed on the first body, and capable of moving in a direction perpendicular to the plate surface of the support plate to move away from or closer to the first body;

[0011] At least two clamping mechanisms are disposed on the second body and are both configured to clamp a cable and to form an electrical connection with the cable;

[0012] Two pushing parts are both arranged on the second body and are respectively arranged corresponding to the first clamping spring pieces, and are both configured to drive the first clamping spring piece to swing around the second end toward the direction close to the slide rail when the second body approaches the first body, so as to fix the second body on the slide rail through the two first clamping spring pieces;

[0013] The position adjustment mechanism is configured to change the position of the second body on the first body so as to change the relative position between the pushing portion and the first clamping spring.

[0014] Furthermore, the positioning mechanism includes two positioning components, each of which includes a limit block, a limit hole, a bidirectional elastic telescopic rod and two guide grooves, the third end of the limit block is hinged on the first body, and the fourth end is suspended and can form a stopper with the second body to limit the maximum distance that the second body moves in the direction close to the first body; the limit hole is arranged on the second body and extends in a direction parallel to the extension direction of the slide rail; the bidirectional elastic telescopic rod is inserted in the limit hole, and can slide in a direction perpendicular to the extension direction of the slide rail under the limiting action of the limit hole; the two guide grooves are arranged on the first body, and are respectively arranged at both ends of the limit hole, and are both connected to the limit hole, the guide groove is a closed structure connected end to end, and the two telescopic parts of the bidirectional elastic telescopic rod are respectively slidably inserted in the two guide grooves.

[0015] Furthermore, the clamping mechanism comprises two second clamping springs, the second clamping springs are arc-shaped structures, the convex surfaces of the two second clamping springs are arranged opposite to each other, and a clamping area for clamping the cable is formed between the two second clamping springs.

[0016] Furthermore, the two second clamping springs are arranged at intervals along the extension direction of the slide rail, and one of the second clamping springs is fixed, and the other second clamping spring can slide elastically along the extension direction of the slide rail; the clamping mechanism also includes an adjustment component, and the adjustment component is configured to be able to adjust the clamping force of the two second clamping springs on the cable according to the cross-sectional size of the cable, so that when the cross-sectional sizes of the cable are different, the clamping forces of the two second clamping springs on the cable can be made consistent.

[0017] Furthermore, the adjustment assembly includes a mounting block, a movable groove and a guide block, the mounting block is arranged on the second slidable clamping spring piece; the movable groove is arranged on the mounting block, the movable groove includes a first sub-groove and a plurality of second sub-grooves, the first sub-groove extends along an extension direction parallel to the slide rail; the second sub-groove is inclined, the plurality of second sub-grooves are arranged at intervals along the extension direction parallel to the slide rail, and are all connected to the first sub-groove, and the inclination of the second sub-groove gradually increases along the direction away from the second slidable clamping spring piece; the guide block is inserted in the second body, and can slide in a direction perpendicular to the plate surface of the support plate, and can form a stop fit with the first body, and a sliding protrusion is provided on the guide block, and the sliding protrusion is slidably inserted in the movable groove.

[0018] Furthermore, the clamping mechanism also includes two elastic members, which are connected between the second slidable clamping spring sheet and the second body. Under the action of the elastic members, the second slidable clamping spring sheet has a tendency to move toward the direction approaching the other second clamping spring sheet.

[0019] Furthermore, the elastic member is a first compression spring.

[0020] Furthermore, an anti-slip portion is provided on the convex surface of the second clamping spring sheet.

[0021] Furthermore, the anti-slip portion includes a plurality of convex strips, and the plurality of convex strips are arranged at intervals.

[0022] Furthermore, the first clamping spring is a hook-shaped structure, and the second end is the hook end of the first clamping spring, and a hook-shaped groove structure is provided on the surface where the slide rail and the first clamping spring contact, and the groove structure can form a snap-fit ​​with the hook end of the first clamping spring.

[0023] The beneficial effects of the present invention are:

[0024] In the process of using a low-voltage circuit breaker provided by the present invention, initially, the second body is arranged away from the first body, and at this time, the first clamping spring is maintained at a position away from the slide rail under the action of its own elasticity; when the low-voltage circuit breaker is installed on the support plate, the first body is firstly sleeved on the slide rail, and then the first body is moved to a suitable position along the slide rail, and then the position of the second body on the first body is adjusted by the adjustment mechanism, so that the second body is arranged close to the first body. During the adjustment process of the adjustment mechanism, the push part synchronously moves with the second body, and drives the first clamping spring to swing around the second end in the direction close to the slide rail, so as to pass through the two first clamping The spring clip fixes the second body on the slide rail, thereby achieving quick installation; when the low-voltage circuit breaker is removed from the support plate, the position of the second body on the first body is first adjusted by the positioning mechanism so that the second body is arranged away from the first body. During the positioning process of the positioning mechanism, the pushing part synchronously moves with the second body, and the first clamping spring clip can swing around the second end in the direction away from the slide rail under the action of its own elasticity, so that the two second clamping spring clips no longer clamp the slide rail. At this time, the second body can be removed from the support plate together with the first body, thereby achieving quick disassembly; in this way, not only the disassembly and assembly steps can be simplified, but also the disassembly and assembly efficiency can be improved.

[0025] Furthermore, by providing an adjustment component, when the cross-sectional dimensions of the cable are different during use, the clamping forces of the two second clamping springs on the cable can be made consistent under the action of the adjustment component, thereby avoiding unstable clamping and over-clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a low-voltage circuit breaker provided by an embodiment of the present invention when it is assembled on a support plate;

[0027] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a low-voltage circuit breaker provided by an embodiment of the present invention when assembled on a support plate;

[0028] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a second body of a low-voltage circuit breaker provided in an embodiment of the present invention;

[0029] Figure 4 A schematic three-dimensional cross-sectional structural diagram of a part of the structure of a low-voltage circuit breaker provided in an embodiment of the present invention;

[0030] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0031] Figure 6 A schematic cross-sectional view of the assembly of a first body, a limit block and a first clamping spring of a low-voltage circuit breaker provided by an embodiment of the present invention;

[0032] Figure 7 for Figure 6 A schematic diagram of the partially enlarged structure at B in the middle;

[0033] Figure 8 A schematic diagram of the three-dimensional structure of the low-voltage circuit breaker provided by an embodiment of the present invention when two second clamping springs, an anti-slip portion, a mounting block, a moving groove and a first compression spring are assembled;

[0034] Fig. 9 A schematic diagram of the three-dimensional structure of a guide block of a low-voltage circuit breaker provided in an embodiment of the present invention;

[0035] Fig.10 A schematic diagram of the three-dimensional structure of a pushing portion of a low-voltage circuit breaker provided in an embodiment of the present invention.

[0036] in:

[0037] 1. first body; 101. first boss; 102. first sink;

[0038] 2. The first clamping spring;

[0039] 3. Second body; 301. Second boss; 302. Wire mounting groove; 303. Second sink groove; 304. Mounting groove; 305. Fourth sink groove;

[0040] 401, second clamping spring; 4011, convex strip; 4021, mounting block; 4022, moving groove; 40221, first sub-groove; 40222, second sub-groove; 4023, guide block; 40231, sliding protrusion; 403, first compression spring;

[0041] 5. Pushing part;

[0042] 6011, limit block; 6012, limit hole; 6013, bidirectional elastic telescopic rod; 6014, guide groove; 60141, first guide sub-groove; 60142, second guide sub-groove; 60143, third guide sub-groove; 60144, fourth guide sub-groove;

[0043] 7. Support plate; 701. Slide rail; 7011. Hook groove. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] Figure 1 The up-down, left-right, and front-back directions shown are directions of the overall viewing angles of all embodiments of the present invention.

[0048] like Figures 1 to 10As shown, the low-voltage circuit breaker provided in the embodiment of the present invention is configured to be assembled on the support plate 7, and a slide rail 701 is arranged on the support plate 7; the low-voltage circuit breaker is arranged to include a first body 1, two first clamping springs 2, a second body 3, at least two clamping mechanisms, two pushing parts 5 and a positioning mechanism. The first body 1 is sleeved on the slide rail 701 during installation and can slide along the slide rail 701; the two first clamping springs 2 are both arranged on the first body 1, and are respectively located on both sides of the slide rail 701, the first end of the first clamping spring 2 is suspended, and the second end is arranged on the first body 1, and the first clamping spring 2 can swing around the second end in a direction away from the slide rail 701 under the action of its own elasticity; the second body 3 is arranged on the first body 1, and can move in a direction perpendicular to the plate surface of the support plate 7 to move away from or close to the first body 1; the clamping mechanism is arranged on the second body 3, and is configured to be able to clamp the cable, and both can form an electrical connection with the cable; the two pushing parts 5 are both arranged on the second body 3, and are respectively arranged corresponding to the first clamping spring piece 2, and are both configured to drive the first clamping spring piece 2 to swing around the second end toward the direction close to the slide rail 701 when the second body 3 is close to the first body 1, so as to fix the second body 3 on the slide rail 701 through the two first clamping spring pieces 2; the positioning mechanism is configured to be able to change the position of the second body 3 on the first body 1, so as to change the relative position between the pushing part 5 and the first clamping spring piece 2.

[0049] Specifically in this embodiment, the support plate 7 is set horizontally as an example. Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the slide rail 701 is arranged on the top of the support plate 7 and extends in the front-to-back direction; in order to facilitate the sliding sleeve on the slide rail 701, a first notch is opened at the bottom of the first body 1, and the first body 1 is slidably sleeved on the slide rail 701 through the first notch when installed; in order to facilitate the installation of the second body 3 and guide the movement of the second body 3, a second notch is opened at the bottom of the second body 3, and a first boss 101 is arranged on the top of the first body 1. The second body 3 is slidably sleeved on the first boss 101 through the second notch when installed. Two first sink grooves 102 are opened on the top of the first body 1, and the two first sink grooves 102 are symmetrically arranged about the first boss 101. Two second bosses 301 are arranged at the bottom of the second body 3, and the two second bosses 301 are symmetrically arranged about the second notch, and are respectively slidably inserted in the first sink grooves 102, and the second bosses 301 are respectively slidably inserted in the first sink grooves 102. Under the guidance of the first sink 102, the second body 3 can only slide in the up and down direction to move away from or approach the first body 1; the two first clamping springs 2 are symmetrically arranged at the first notch, and both extend in the front-to-back direction, the upper end of the first clamping spring 2 is the second end, and the lower end is the first end, and the upper end of the first clamping spring 2 is arranged on the upper wall of the first notch when installed; in order to allow the first clamping spring 2 to have the freedom to swing around the upper end, the first clamping spring 2 and the side wall of the first notch are spaced apart; the two pushing parts 5 are symmetrically arranged at the bottom of the second body 3, and are respectively located between the second boss 301 and the second notch, and extend downward into the first notch, and the pushing parts 5 are simultaneously located between the first clamping spring 2 and the side wall of the first notch, so that when the second body 3 moves in the direction close to the first body 1, it can drive the first clamping spring 2 to swing around its own upper end in the direction close to the slide rail 701.

[0050] Optionally, the push portion 5 can be set as a plate-like structure, and the plate surface is perpendicular to the plate surface of the support plate 7 and extends in the front-back direction. In this way, when the second body 3 moves in the direction close to the first body 1, the push portion 5 can fully contact the first clamping spring piece 2, so as to evenly distribute the push force on the first clamping spring piece 2, so that the first clamping spring piece 2 is subjected to a relatively balanced force in the process of swinging around its upper end, avoiding the situation where the first clamping spring piece 2 is deformed unevenly due to excessive local force, thereby ensuring that the first clamping spring piece 2 can stably and reliably swing around the upper end in the direction close to the slide rail 701, and effectively fix the first body 1 on the slide rail 701.

[0051] Optionally, the clamping mechanism can adopt an existing bolt. In this way, the cable can be fixed by screwing in and out of the bolt.

[0052] Optionally, when there are two clamping mechanisms, the two clamping mechanisms can be respectively arranged on the left and right side walls of the first body 1 .

[0053] Specifically, in order to facilitate the insertion of cables, cable grooves 302 are opened on the left and right side walls of the first body 1 .

[0054] Initially, the second body 3 is disposed away from the first body 1 , and at this time, the first clamping spring 2 is maintained at a position close to the side wall of the first notch under the action of its own elasticity.

[0055] When installing the low-voltage circuit breaker on the support plate 7, firstly, the first body 1 is sleeved on the slide rail 701 from top to bottom through the first notch, and then the first body 1 is moved to a suitable position along the slide rail 701. The first body 1 synchronously drives the second body 3 to move to a suitable position, and then the position of the second body 3 on the first body 1 is adjusted by the positioning mechanism, so that the second body 3 is arranged close to the first body 1. During the positioning process of the positioning mechanism, the pushing part 5 synchronously follows the movement of the second body 3 and is inserted between the first clamping spring piece 2 and the side wall of the first notch. As the second body 3 moves, the pushing part 5 synchronously pushes the first clamping spring piece 2 to swing around the second end toward the slide rail 701, so as to fix the second body 3 on the slide rail 701 through the two first clamping spring pieces 2, thereby realizing quick installation; then the cable can be placed in the cable groove 302, and the cable can be fixed to the second body 3 by tightening the bolts.

[0056] When the low-voltage circuit breaker is removed from the support plate 7, first loosen the bolts, and then remove the cables from the wiring groove 302; then adjust the position of the second body 3 on the first body 1 through the positioning mechanism, so that the second body 3 is set away from the first body 1. During the positioning process of the positioning mechanism, the pushing part 5 synchronously follows the movement of the second body 3 and gradually disengages from the first clamping spring piece 2 and the side wall of the first notch. As the second body 3 moves, the first clamping spring piece 2 can swing around the second end away from the slide rail 701 under the action of its own elasticity, so that the two second clamping spring pieces 401 no longer clamp the slide rail 701. At this time, the second body 3 can be removed from the support plate 7 together with the first body 1, so that quick disassembly can be achieved; in this way, not only the disassembly and assembly steps can be simplified, but also the disassembly and assembly efficiency can be improved.

[0057] Further, the positioning mechanism can be configured to include two positioning components, each of which includes a limit block 6011, a limit hole 6012, a bidirectional elastic telescopic rod 6013 and two guide grooves 6014, the third end of the limit block 6011 is hinged on the first body 1, and the fourth end is suspended and can form a stopper with the second body 3 to limit the maximum distance that the second body 3 moves in the direction close to the first body 1; the limit hole 6012 is provided on the second body 3 and extends in a direction parallel to the slide rail 70 1; the bidirectional elastic telescopic rod 6013 is inserted in the limiting hole 6012, and can slide in the extending direction perpendicular to the slide rail 701 under the limiting action of the limiting hole 6012; two guide grooves 6014 are arranged on the first body 1, and are respectively arranged at both ends of the limiting hole 6012, and are both connected to the limiting hole 6012, the guide groove 6014 is a closed structure connected end to end, and the two telescopic parts of the bidirectional elastic telescopic rod 6013 are respectively slidably inserted in the two guide grooves 6014.

[0058] Specifically in this embodiment, the two positioning components are symmetrically arranged along the left and right directions; the two limit blocks 6011 are symmetrically arranged about the first boss 101, taking the limit block 6011 on the left side as an example, Figure 2 and Figure 3 As shown, to facilitate the installation of the limit block 6011, a second groove 303 is opened on the left side wall of the second body 3 and below the wire loading groove 302, and the second groove 303 is also set to pass through the bottom of the second body 3. A third groove is opened on the left side wall of the first body 1, and the third groove is also set to pass through the top of the first body 1. The limit block 6011 is inserted into the second groove 303 and the third groove at the same time during installation, and the upper end of the limit block 6011 is set to the fourth end, and the lower end is set to the third end. When the limit block 6011 rotates around its lower end until it coincides with the second groove 303 and the third groove at the same time, the upper end of the limit block 6011 abuts against the upper wall stop of the second groove 303 to limit the maximum distance that the second body 3 moves in the direction close to the first body 1.

[0059] Optionally, the limiting block 6011 may be configured as an inverted L-shaped structure.

[0060] The limiting hole 6012 is opened on the second boss 301 and passes through the front and rear side walls of the second boss 301; the bidirectional elastic telescopic rod 6013 is configured to be composed of a base part located in the middle and a telescopic part inserted at both ends of the base part, and a second compression spring is arranged between the telescopic part and the base part. Under the action of the second compression spring, the telescopic part has a tendency to extend outward.

[0061] Optionally, the bidirectional elastic telescopic rod 6013 can be set as a columnar structure, so that the base part can be set as a cylindrical structure and the telescopic part can be set as a round rod structure.

[0062] Specifically, in order to enable the bidirectional elastic telescopic rod 6013 to slide only in the extension direction perpendicular to the slide rail 701, the limiting hole 6012 is configured to consist of a first sub-hole located in the middle and two second sub-holes located at both ends of the first sub-hole, and the cross-sectional shapes of the first sub-hole and the second sub-hole are both configured to be rounded rectangles. When installing the bidirectional elastic telescopic rod 6013, the base part is inserted in the first sub-hole, and the telescopic part is inserted in the second sub-hole, and the width of the first sub-hole is equal to the outer diameter of the base part, and the width of the second sub-hole is equal to the diameter of the telescopic part, so that a step surface is formed at the junction of the first sub-hole and the two second sub-holes, and the bidirectional elastic telescopic rod 6013 can only slide in the extension direction perpendicular to the slide rail 701 under the clamping of the two step surfaces.

[0063] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, two guide grooves 6014 are correspondingly opened on the front and rear side walls of the first sink 102; the guide grooves 6014 are set to a rectangular structure. Taking the guide groove 6014 located on the left as an example, for the convenience of description, the upper part of the guide groove 6014 is named as the first guide sub-groove 60141, the left part of the guide groove 6014 is named as the second guide sub-groove 60142, the lower part of the guide groove 6014 is named as the third guide sub-groove 60143, and the right part of the guide groove 6014 is named as the fourth guide sub-groove 60144, wherein the first guide sub-groove 60141 and the third guide sub-groove 60143 are both horizontally arranged, the second guide sub-groove 60142 and the fourth guide sub-groove 60144 are both vertically arranged, and the first guide sub-groove 60141 is set to have two sections of slope structure. The slope structure on the right side is set to increase the groove depth from right to left, and the slope structure on the left side is set to decrease the groove depth from right to left, and the upper wall of the first guide slot 60141 is set to a convex structure, and the lower wall of the first guide slot 60141 is set to a concave structure, and the corresponding positions of the convex structure and the concave structure are located on the right side of the junction of the two slope structures, and it is set that when the telescopic part of the bidirectional elastic telescopic rod 6013 is located at the junction of the two slope structures, the second compression spring is in the original length state, and then when the low-voltage circuit breaker vibrates, under the joint action of the two slope structures and the second compression spring, the bidirectional elastic telescopic rod 6013 can only move left and right at the junction of the two slope structures, thereby preventing the bidirectional elastic telescopic rod 6013 from moving into other guide slots and affecting the subsequent installation process.

[0064] The second guide slot 60142 is configured to be composed of a slope structure, and the slope structure has a gradually decreasing groove depth from top to bottom, and the groove depth of the upper end of the slope structure is greater than the groove depth of the left end of the first guide slot 60141, so as to form a step structure to avoid the bidirectional elastic telescopic rod 6013 from entering the first guide slot 60141 from the second guide slot 60142; the third guide slot 60143 is configured to be composed of a slope structure, and the slope structure has a gradually increasing groove depth from left to right, and the groove depth of the left end of the slope structure is greater than the groove depth of the lower end of the second guide slot 60142, so as to form a step structure to avoid the bidirectional elastic telescopic rod 6013 from entering the first guide slot 60141 from the second guide slot 60142. The elastic telescopic rod 6013 enters the second guide sub-groove 60142 from the third guide sub-groove 60143; the fourth guide sub-groove 60144 is configured to be composed of a slope structure, and the slope structure has a groove depth that gradually decreases from bottom to top, and the groove depth at the upper end of the slope structure is less than the groove depth at the right end of the first guide sub-groove 60141, so as to form a step structure, thereby avoiding the situation where the bidirectional elastic telescopic rod 6013 enters the fourth guide sub-groove 60144 from the first guide sub-groove 60141, and the lower wall of the fourth guide sub-groove 60144 is configured to be a Z-shaped structure, with the left side higher and the right side lower, so as to lock the position of the bidirectional elastic telescopic rod 6013.

[0065] Initially, the telescopic part of the bidirectional elastic telescopic rod 6013 is located at the junction of the two slope structures of the first guide groove 60141, and the limit block 6011 is inserted as a whole into the second groove 303 and the third groove; at this time, the second body 3 is set away from the first body 1, and the first clamping spring 2 is maintained in a position close to the side wall of the first notch under its own elastic action.

[0066] After the first body 1 moves to a suitable position along the slide rail 701, the second body 3 is pulled upward. Taking the guide groove 6014 on the left as an example, under the joint action of the limiting hole 6012 and the upper wall of the first guide sub-slot 60141, the telescopic part moves to the left while compressing the second compression spring until it moves into the second guide sub-slot 60142; then the second body 3 is pressed downward, and the second body 3 synchronously drives the bidirectional elastic telescopic rod 6013 to move downward along the second guide sub-slot 60142 through the limiting hole 6012, and the telescopic part synchronously compresses the second compression spring inward under the top push of the slope structure of the second guide sub-slot 60142 until the bidirectional elastic telescopic rod 6013 moves to the third guide sub-slot 6 0143, and due to the existence of the limit block 6011, the second body 3 can only move to the upper edge of the second sub-hole and the left lower edge of the lower wall of the third guide sub-slot 60143 to coincide with each other, and then the second compression spring is released, and under the guidance of the third guide sub-slot 60143, the bidirectional elastic telescopic rod 6013 is driven to move rightward to the slope transition of the lower wall of the third guide sub-slot 60143, so as to lock the position of the second body 3 on the first body 1. The unchanged position of the second body 3 makes the position of the pushing part 5 unchanged, and further makes the position of the first clamping spring piece 2 unchanged, thereby realizing automatic locking and preventing the first body 1 and the second body 3 from loosening and affecting the connection stability of the cables.

[0067] When disassembly is required, rotate the limit block 6011 so that the limit block 6011 is disengaged from the second sink groove 303 and the third sink groove, and then press the second body 3 downward to make the second body 3 and the first body 1 completely contact. At this time, the upper edge of the second sub-hole coincides with the lower edge of the right side of the lower wall of the third guide sub-slot 60143, and the second compression spring continues to be released, and under the guidance of the third guide sub-slot 60143, the bidirectional elastic telescopic rod 6013 is driven to move rightward to the fourth guide sub-slot 60144; then pull the second body 3 upward, and the second body 3, on the one hand, synchronously drives the bidirectional elastic telescopic rod 6013 to move upward along the fourth guide sub-slot 60144 through the limit hole 6012, and the telescopic part is synchronously at the top of the slope structure of the fourth guide sub-slot 60144 The second compression spring is pushed down and compressed inward until the bidirectional elastic telescopic rod 6013 moves into the first guide slot 60141, and then the second compression spring is released, and under the guidance of the first guide slot 60141, the bidirectional elastic telescopic rod 6013 is driven to move left to the intersection of the two slope structures of the first guide slot 60141, and on the other hand, the pushing part 5 is simultaneously driven to move upward, so that the pushing part 5 gradually disengages from the first clamping spring piece 2 and the side wall of the first notch. As the second body 3 moves, the first clamping spring piece 2 can swing around the second end in the direction away from the slide rail 701 under the action of its own elasticity, so that the two second clamping spring pieces 401 no longer clamp the slide rail 701, so that the second body 3 can be removed from the support plate 7 together with the first body 1.

[0068] In some embodiments, the clamping mechanism can be configured to include two second clamping springs 401, the second clamping springs 401 are arc-shaped structures, the convex surfaces of the two second clamping springs 401 are arranged opposite to each other, and a clamping area for clamping the cable is formed between the two second clamping springs 401.

[0069] Specifically in this embodiment, the two second clamping springs 401 are inserted into the same wire installation groove 302 during installation.

[0070] Optionally, the second clamping spring 401 may extend along the left-right direction.

[0071] During use, the cable is inserted into the cable groove 302, and as the cable is inserted, the two second clamping springs 401 gradually move away from each other under the push of the cable, and tend to approach each other under the action of their own elasticity, so as to clamp the cable.

[0072] In a further embodiment, the cross-sectional dimensions of the cables are different, resulting in different deformations of the second clamping springs 401, which in turn result in different clamping forces on the cables. The larger the cross-sectional dimensions of the cables, the larger the deformations of the two second clamping springs 401, which results in greater clamping forces of the two second clamping springs 401 on the cables, which may result in over-clamping. Similarly, the smaller the cross-sectional dimensions of the cables, the smaller the deformations of the two second clamping springs 401, which results in smaller clamping forces of the two second clamping springs 401 on the cables, which may result in unstable clamping. To solve this problem, two second clamping springs 401 are arranged at intervals along the extension direction of the slide rail 701, and one of the second clamping springs 401 is fixed, and the other second clamping spring 401 can slide elastically along the extension direction of the slide rail 701; the clamping mechanism also includes an adjustment component, which is configured to adjust the clamping force of the two second clamping springs 401 on the cable according to the cross-sectional size of the cable, so that when the cross-sectional sizes of the cables are different, the clamping forces of the two second clamping springs 401 on the cables can be consistent. In this way, when the two second clamping springs 401 are used to clamp cables of different cross-sectional sizes, the clamping forces of the two second clamping springs 401 on the cables of different cross-sectional sizes can be consistent under the action of the adjustment component, thereby avoiding unstable clamping and over-clamping.

[0073] Further, the adjustment assembly can be configured to include a mounting block 4021, a moving groove 4022 and a guide block 4023, wherein the mounting block 4021 is disposed on the second clamping spring piece 401 capable of sliding; the moving groove 4022 is disposed on the mounting block 4021, and the moving groove 4022 includes a first sub-groove 40221 and a plurality of second sub-grooves 40222, wherein the first sub-groove 40221 extends in a direction parallel to the extension direction of the slide rail 701; the second sub-groove 40222 is disposed obliquely, and the plurality of second sub-grooves 402 22 are arranged at intervals along the extension direction parallel to the slide rail 701, and are all connected to the first sub-slot 40221, and the slope of the second sub-slot 40222 gradually increases along the direction away from the second clamping spring piece 401 that can slide; the guide block 4023 is inserted in the second body 3, and can slide along the direction perpendicular to the plate surface of the support plate 7, and can form a stop fit with the first body 1, and a sliding protrusion 40231 is provided on the guide block 4023, and the sliding protrusion 40231 is slidably inserted in the movable groove 4022.

[0074] Specifically in this embodiment, Figure 8 As shown, the second clamping spring piece 401 located on the rear side remains stationary, and the second clamping spring piece 401 located on the front side is a second clamping spring piece 401 that can slide; the mounting block 4021 is vertically arranged on the front side wall of the second clamping spring piece 401 on the front side, and extends in the front-to-back direction; the moving groove 4022 is arranged on the left side wall of the mounting block 4021, and the part of the moving groove 4022 extending in the front-to-back direction is the first sub-groove 40221, and the part of the moving groove 4022 inclined to the front side is the second sub-groove 40222, the second sub-groove 40222 is located above the first sub-groove 40221, and along the direction from the back to the front, the slope of the second sub-groove 40222 gradually increases to adapt to cables with different cross-sectional sizes; as shown Fig. 9 As shown, the guide block 4023 extends in the up-down direction, and a third notch is opened at the top of the guide block 4023, and the sliding protrusion 40231 is arranged on the side wall of the third notch. When installing, the guide block 4023 is sleeved on the mounting block 4021 through the third notch so that the sliding protrusion 40231 can be slidably inserted in the movable groove 4022.

[0075] Specifically, to facilitate installation of the mounting block 4021, as Figure 3 As shown, a mounting groove 304 is provided in the second body 3 , the mounting groove 304 extends in the front-to-back direction and is connected to the wiring groove 302 , and the mounting block 4021 is slidably inserted into the mounting groove 304 during installation.

[0076] More specifically, to facilitate installation of the guide block 4023, as Figure 3As shown, a fourth groove 305 is provided at the bottom of the second body 3 and between the second boss 301 and the second groove 303. The fourth groove 305 extends in the up-down direction and is connected to the mounting groove 304. The guide block 4023 is slidably inserted into the fourth groove 305 during installation.

[0077] During use, before moving the second body 3, the cable is first inserted into the cable loading groove 302, and as the cable is inserted, the second clamping spring piece 401 located on the front side gradually moves in the direction away from the second clamping spring piece 401 on the rear side under the push of the cable, and the two second clamping spring pieces 401 tend to approach each other under the elastic action, so that the cable can be initially clamped, and the smaller the cross-sectional size of the cable, the closer the distance between the two second clamping spring pieces 401, so that the sliding protrusion 40231 moves forward along the first sub-groove 40221. The distance is closer to the second sub-groove 40222 with a smaller slope; similarly, the larger the cross-sectional size of the cable, the greater the distance between the two second clamping spring pieces 401, so that the sliding protrusion 40231 moves forward along the first sub-groove 40221. The distance is longer, so that the sliding protrusion 40231 moves forward along the first sub-groove 40221. The distance is longer to the second sub-groove 40222 with a larger slope.

[0078] In the process of the second body 3 moving toward the direction close to the first body 1, the guide block 4023 first contacts the first body 1, and moves upward relative to the second body 3 under the push of the first body 1, and the guide block 4023 simultaneously drives the sliding protrusion 40231 to slide along the second slot 40222, and the installation block 4021 drives the second clamping spring piece 401 on the front side to move toward the direction close to the second clamping spring piece 401 on the rear side under the drive of the sliding protrusion 40231, so as to clamp the cable; and when the cross-sectional size of the cable is smaller, since the sliding protrusion 40231 moves in the second slot 40222 with a smaller slope, the sliding protrusion 40231 moves in the second slot 40222 with a smaller slope, Driven by the sliding protrusion 40231, the mounting block 4021 drives the front second clamping spring piece 401 to move closer to the rear second clamping spring piece 401. The longer the distance, the clamping force on the cable can be improved to avoid the problem of unstable clamping. When the cross-sectional size of the cable is larger, since the sliding protrusion 40231 moves in the second slot 40222 with a larger slope, the mounting block 4021 drives the front second clamping spring piece 401 to move closer to the rear second clamping spring piece 401. The longer the distance, the clamping force on the cable can be reduced to avoid the problem of excessive clamping.

[0079] In addition, the guiding cooperation between the second slot 40222 and the sliding protrusion 40231 enables the second body 3 to move downward a small distance to reduce the distance between the two larger second clamping springs 401, thereby greatly improving the clamping force on the cable and facilitating improving the crimping efficiency of the cable.

[0080] In a further embodiment, in order to improve the transmission stability between the sliding protrusion 40231 and the movable groove 4022, it is configured that the movable groove 4022 is provided on the left and right side walls of the mounting block 4021, and the sliding protrusion 40231 is provided on the two side walls of the third notch, and the two sliding protrusions 40231 are respectively slidably inserted into the two movable grooves 4022 during installation.

[0081] In other embodiments, in order to improve the adjustment stability of the adjustment component, the number of the adjustment components can be set to two, such as Figure 4 As shown, the two adjustment components are symmetrically arranged along the left-right direction.

[0082] In other embodiments, the clamping mechanism is configured to also include two elastic members, which are connected between the slidable second clamping spring piece 401 and the second body 3. Under the action of the elastic members, the slidable second clamping spring piece 401 has a tendency to move toward the direction close to the other second clamping spring piece 401.

[0083] Specifically in this embodiment, the elastic member can be set as a first compression spring 403, and connected between the slidable second clamping spring 401 and the second body 3. Under the action of the first compression spring 403, the slidable second clamping spring 401 has a tendency to move toward the direction close to another second clamping spring 401, thereby achieving preliminary positioning of the cable.

[0084] In a further embodiment, Figure 8 As shown, the first compression spring 403 can be inserted into the mounting block 4021 during installation and extend along the front-to-back direction.

[0085] In other embodiments, in order to improve the stability of the second clamping spring piece 401 when clamping the cable, an anti-slip portion is provided on the convex surface of the second clamping spring piece 401 .

[0086] Specifically in this embodiment, the anti-slip portion can be configured to include a plurality of convex strips 4011, and the plurality of convex strips 4011 are arranged at intervals, such as Figure 8 As shown, the convex strips 4011 are arranged to extend in the up-down direction and are arranged at intervals in the left-right direction. In this way, when the two second clamping springs 401 clamp the cable, the setting of the convex strips 4011 increases the surface roughness of the second clamping springs 401. According to the friction formula F=μN (where F is the friction force, μ is the friction coefficient, and N is the positive pressure), when the positive pressure remains unchanged, the friction coefficient μ will increase due to the existence of the convex strips 4011, which significantly enhances the friction between the second clamping springs 401 and the cable, thereby greatly improving the stability of the clamping.

[0087] In addition, since the cable is inserted into the cable groove 302 in the left-right direction, the convex strip 4011 extending in the up-down direction can better fit the external force that the cable may be subjected to in the vertical direction, such as the cable's own gravity and the vertical force component caused by factors such as vibration; and the interval arrangement in the left-right direction ensures that in the horizontal direction, when the cable is subjected to external forces such as pulling, it can also obtain uniform friction support, thereby avoiding the cable tilting or escaping from the clamping area due to local uneven force.

[0088] In other embodiments, the anti-slip portion may also be configured as a knurled structure.

[0089] In other embodiments, in order to further improve the stability of the first clamping spring 2 when clamping the slide rail 701, the first clamping spring 2 is set to be a hook-shaped structure, and the second end is the hook end of the first clamping spring 2, and a hook-shaped groove structure is provided on the surface where the slide rail 701 and the first clamping spring 2 contact, and the groove structure can form a snap-fit ​​with the hook end of the first clamping spring 2.

[0090] Specifically in this embodiment, Figure 1 As shown, two hook grooves 7011 are symmetrically arranged on the left and right side walls of the slide rail 701, and the hook grooves 7011 can form a snap fit with the hook end of the first clamping spring piece 2. In this way, when the hook grooves 7011 and the hook end of the first clamping spring piece 2 form a snap fit, it can use the hooking characteristics of the hook to provide additional anchoring force during the clamping process, thereby enhancing the connection stability between the first clamping spring piece 2 and the slide rail 701.

[0091] In other embodiments, in order to save materials and reduce manufacturing costs, such as Fig.10 As shown, the push portion 5 can be configured as a comb-teeth plate structure with the comb-teeth section on top. In this way, the material used for the push portion 5 can be reduced, and the uniform pushing effect of the push portion 5 on the first clamping spring sheet 2 can be avoided.

[0092] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A low voltage circuit breaker, characterized in that: The low-voltage circuit breaker is configured to be assembled on a support plate, and a slide rail is provided on the support plate; the low-voltage circuit breaker comprises: The first body is sleeved on the slide rail when installed and can slide along the slide rail; Two first clamping springs are both arranged on the first body and are respectively located on both sides of the slide rail, the first end of the first clamping spring is suspended, and the second end is arranged on the first body, and the first clamping spring can swing around the second end in a direction away from the slide rail under the action of its own elasticity; A second body, disposed on the first body, and capable of moving in a direction perpendicular to the plate surface of the support plate to move away from or closer to the first body; At least two clamping mechanisms are disposed on the second body and are both configured to clamp a cable and to form an electrical connection with the cable; Two pushing parts are both arranged on the second body and are respectively arranged corresponding to the first clamping spring pieces, and are both configured to drive the first clamping spring piece to swing around the second end toward the direction close to the slide rail when the second body approaches the first body, so as to fix the second body on the slide rail through the two first clamping spring pieces; a position adjustment mechanism, configured to change the position of the second body on the first body, so as to change the relative position between the pushing portion and the first clamping spring; The positioning mechanism includes two positioning components, each of which includes a limit block, a limit hole, a bidirectional elastic telescopic rod and two guide grooves, the third end of the limit block is hinged on the first body, and the fourth end is suspended, the limit block can form a stop cooperation with the second body to limit the maximum distance that the second body moves in the direction close to the first body; the limit hole is arranged on the second body and extends in a direction parallel to the extension direction of the slide rail; the bidirectional elastic telescopic rod is inserted in the limit hole, and can slide in a direction perpendicular to the extension direction of the slide rail under the limiting action of the limit hole; the two guide grooves are arranged on the first body, and are respectively arranged at both ends of the limit hole, and are both connected to the limit hole, the guide groove is a closed structure connected end to end, and the two telescopic parts of the bidirectional elastic telescopic rod are respectively slidably inserted in the two guide grooves.

2. The low voltage circuit breaker according to claim 1, characterized in that: The clamping mechanism comprises two second clamping springs, the second clamping springs are arc-shaped, the convex surfaces of the two second clamping springs are arranged opposite to each other, and a clamping area for clamping the cable is formed between the two second clamping springs.

3. The low voltage circuit breaker according to claim 2, characterized in that: The two second clamping springs are arranged at intervals along the extension direction of the slide rail, and one of the second clamping springs is fixed, and the other second clamping spring can slide elastically along the extension direction of the slide rail; the clamping mechanism also includes an adjustment component, and the adjustment component is configured to adjust the clamping force of the two second clamping springs on the cable according to the cross-sectional size of the cable, so that when the cross-sectional sizes of the cable are different, the clamping forces of the two second clamping springs on the cable can be consistent.

4. The low voltage circuit breaker according to claim 3, characterized in that: The adjustment assembly includes a mounting block, a movable groove and a guide block, the mounting block is arranged on the second slidable clamping spring piece; the movable groove is arranged on the mounting block, the movable groove includes a first sub-groove and a plurality of second sub-grooves, the first sub-groove extends along an extension direction parallel to the slide rail; the second sub-groove is inclined, the plurality of second sub-grooves are arranged at intervals along the extension direction parallel to the slide rail, and are all connected to the first sub-groove, and the inclination of the second sub-groove gradually increases along the direction away from the second slidable clamping spring piece; the guide block is inserted in the second body, and can slide in a direction perpendicular to the plate surface of the support plate, and can form a stop fit with the first body, and a sliding protrusion is provided on the guide block, and the sliding protrusion is slidably inserted in the movable groove.

5. The low voltage circuit breaker according to claim 3, characterized in that: The clamping mechanism also includes two elastic members, which are connected between the second slidable clamping spring sheet and the second body. Under the action of the elastic members, the second slidable clamping spring sheet has a tendency to move toward the direction approaching the other second clamping spring sheet.

6. The low voltage circuit breaker according to claim 5, characterized in that: The elastic member is a first compression spring.

7. The low voltage circuit breaker according to claim 2, characterized in that: An anti-slip portion is arranged on the convex surface of the second clamping elastic sheet.

8. The low voltage circuit breaker according to claim 7, characterized in that: The anti-slip portion includes a plurality of convex strips, and the plurality of convex strips are arranged at intervals.

9. The low voltage circuit breaker according to claim 1, characterized in that: The first clamping spring is a hook-shaped structure, and the second end is the hook end of the first clamping spring. A hook-shaped groove structure is provided on the surface where the slide rail and the first clamping spring contact, and the groove structure can form a snap-fit ​​with the hook end of the first clamping spring.

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