Moulded case circuit breaker middle cover convenient to assemble and disassemble

Abstract

The utility model discloses a molded case circuit breaker middle cover convenient to assemble and disassemble, relates to the technical field of molded case circuit breakers, and aims to solve the technical problems that a current screw-fixed circuit breaker middle cover is inconvenient to disassemble, affects the maintenance efficiency, is easy to slip and abrade, and causes an unstable fixing phenomenon. Comprising a circuit breaker body, a first side cover, a connecting piece, a second side cover and a plug connector, an assembling opening is formed in the middle of the front end face of the circuit breaker body, an assembling frame is installed in the assembling opening, a circuit breaker is arranged in the assembling frame, guide pieces are arranged on the two sides of an opening of the assembling opening, and lock holes are distributed in the front end face of the circuit breaker body in an array mode. The connecting piece is installed on the front side of the assembly frame, the first side cover and the second side cover are connected with the guide piece, and an accessory groove is formed in the front side of the second side cover. The utility model has the advantages that the multi-point splicing and clamping installation are realized, the assembly and disassembly difficulty is reduced, and the fixing stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of molded case circuit breaker, more particularly to a molded case circuit breaker middle cover convenient to assemble and disassemble. BACKGROUND

[0002] Molded case circuit breaker is a kind of commonly used electrical protection device, and is widely applied in low-voltage distribution system.When short circuit occurs in circuit, short-circuit current will far exceed the rated current of circuit breaker, at this time, strong electromagnetic force will be generated in the coil of electromagnetic release, the counteracting force of spring is overcome, the release is rapidly operated, the operating mechanism is driven to separate the contact, the circuit is cut off, and short-circuit protection is realized.

[0003] The middle cover of molded case circuit breaker is usually provided with accessory groove, which can be used to install accessory modules such as auxiliary contact, alarm contact and auxiliary release, to meet different use requirements, realize various protection and control functions of circuit.The middle cover of existing molded case circuit breaker is fixed by simple screw, and although screw fixing is stable, the problem of inconvenient assembly and disassembly is very obvious in actual operation.When emergency maintenance or frequent replacement of accessories is needed, the work efficiency will be seriously affected by spending a lot of time in screwing screws.Repeatedly screwing screws may also cause screw thread to slip and wear, so that the middle cover is not fixed firmly, and the normal operation of circuit breaker is affected.In view of this, the utility model provides a molded case circuit breaker middle cover convenient to assemble and disassemble. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of prior art, adapting to actual needs, providing a molded case circuit breaker middle cover convenient to assemble and disassemble, to solve the technical problems that the middle cover of circuit breaker fixed by screw is inconvenient to disassemble, affects maintenance efficiency, is easy to slip and wear, and is not fixed firmly.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a molded case circuit breaker middle cover convenient to assemble and disassemble, including circuit breaker body, first side cover, connecting piece, second side cover and plug connector, the middle part of the front end face of circuit breaker body is provided with assembly opening, and assembly opening is installed with assembly frame in it, and circuit breaker switch is arranged in assembly frame, the both sides of assembly opening opening are provided with guide piece, and the front end face of circuit breaker body is provided with lock hole in array, the connecting piece is installed at the front side of assembly frame, the first side cover and second side cover are connected with guide piece, and the front side of second side cover is provided with accessory groove.

[0006] The utility model discloses when using, the assembly frame is installed in the assembly mouth, and the front end opening of connecting piece butt joint assembly frame, and the plug strip is inserted into the slot of the lower side of elastic pressure cover in the butt joint process, and the connection is fixed, at this moment, the first side cover and the second side cover are slid into the guiding piece of the two sides of the front end of the circuit breaker body respectively, and the guiding piece and the guiding groove complete butt joint, at this moment, the spring buckle and the card slot complete butt joint, at this moment, the first side cover and the second side cover are combined into the middle cover, and the butt joint mouth and the lock hole butt joint on the middle cover, and the two plug ends of the plug-in part are inserted into the lock hole from the butt joint mouth, and the rear side lock cylinder and the lock hole are locked and closed by rotating the knob, and the fixed is completed, and the preliminary locking of the middle cover is completed through the above-mentioned clamping and plug-in mode, and then the knob and the lock cylinder are rotated and locked with the lock hole, and the commonly used dismounting structure spring buckle and plug strip can cause abrasion, after abrasion, the slideable separation card strip completes the overall dismounting, the replacement of spring buckle and plug strip is completed, in the sliding process, the plug post in the sliding slot of connecting piece and the insertion hole of spring buckle and card strip connection are separated, and the dismounting is completed, and the convenient assembly mode reduces the overall operation difficulty, and simultaneously facilitates the installation of the first side cover and the second side cover into the middle cover and the circuit breaker body.

[0007] Preferably, the opening of the connecting piece is provided with elastic pressure covers on the upper and lower sides, and the connecting place of the elastic pressure cover and the connecting piece is provided with an insertion hole.

[0008] Preferably, the two sides of the connecting piece are slidably connected with assembly pieces, the assembly piece is composed of a card strip, the tail end of the card strip is fixed with a spring buckle, and the front end of the assembly piece is provided with a plug strip.

[0009] Preferably, the plug strip is inserted into the insertion hole of the elastic pressure cover and the connecting piece, the inner side of the first side cover and the second side cover is provided with a card slot, and the spring buckle is clamped in the corresponding card slot.

[0010] Preferably, the upper and lower sides of the first side cover and the second side cover are provided with butt joint mouths, and the butt joint mouth corresponds to the lock hole, the two plug-in ends of the plug-in part are provided with knobs, the plug-in end of the plug-in part is inserted into the lock hole through the butt joint mouth, and the lock cylinder of the knob is locked with the lock hole.

[0011] Preferably, the rear side of the first side cover and the second side cover is provided with a guiding groove, and the guiding groove is slidably installed on the corresponding guiding piece.

[0012] Preferably, the first side cover and the second side cover form a middle cover, and the middle cover is sleeved on the outer side of the connecting piece.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The utility model discloses a connecting piece is designed, and the assembly frame is installed in the assembly mouth, and the front end opening of the connecting piece is assembled to the assembly frame, and the insertion strip is inserted into the slot under the elastic cover in the docking process, and the connection is fixed, at this moment, the first side cover and the second side cover are slid into respectively from the guide piece of the front end of the circuit breaker body two sides, and the guide piece and the guide groove complete the docking, and at this moment, the spring buckle and the card slot complete the docking, and at this moment, the first side cover and the second side cover are combined into the middle cover, and the docking port on the middle cover is docked with the lock hole, and the two plug-in ends of the plug-in piece are inserted into the lock hole from the docking port, and the knob is rotated to make the rear side lock cylinder and the lock hole lock tightly and close, and the fixed is completed, and the preliminary locking of the middle cover is completed through the above-mentioned clamping and plug-in mode, and then the knob and the lock cylinder are rotated and locked with the lock hole, and through the convenient installation mode, the difficulty of later dismounting and maintenance is reduced.

[0015] 2. The utility model discloses still through design group connects spare, and the common dismounting structure spring buckle and insertion strip can cause abrasion, after abrasion, the slideable separation card strip completes the whole dismounting, and the replacement of spring buckle and insertion strip is completed, in the sliding process, the insertion post in the connecting piece sliding groove is separated with the insertion hole at the connection of spring buckle and card strip, and the dismounting is completed, and the convenient assembly mode reduces the operation difficulty of whole, and simultaneously is convenient for the installation of the first side cover and the second side cover composition middle cover and circuit breaker body, and reduces the operation difficulty. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the front structure schematic drawing of the utility model;

[0017] Figure 2 It is the assembly mouth structure schematic drawing of the utility model;

[0018] Figure 3 It is the unfolded structure schematic drawing of the utility model;

[0019] Figure 4 It is the plug-in piece structure schematic drawing of the utility model;

[0020] Figure 5 It is the assembly frame structure schematic drawing of the utility model;

[0021] Figure 6 It is the connecting piece structure schematic drawing of the utility model;

[0022] Figure 7 It is the second side cover structure schematic drawing of the utility model;

[0023] Figure 8 It is the group connects spare structure schematic drawing of the utility model.

[0024] Label explanation: 1, circuit breaker body; 101, guide piece; 102, assembly opening; 103, lock hole; 2, first side cover; 3, connecting piece; 301, adjusting opening; 4, second side cover; 401, accessory groove; 402, clamping groove; 403, guide groove; 5, plug-in piece; 501, knob; 6, butt joint; 7, assembly frame; 701, circuit breaker; 702, spring cover; 8, assembly piece; 801, spring buckle; 802, clamping strip; 803, insertion strip. DETAILED DESCRIPTION

[0025] As Figures 1 to 6 shown, the utility model relates to a kind of plastic shell circuit breaker middle cover convenient to assemble and disassemble, including circuit breaker body 1, first side cover 2, connecting piece 3, second side cover 4 and plug-in piece 5, the middle part of the front end surface of circuit breaker body 1 is equipped with assembly opening 102, and assembly opening 102 is equipped with assembly frame 7, and assembly frame 7 is equipped with circuit breaker 701, the both sides of the opening of assembly opening 102 are equipped with guide piece 101, the front end surface of circuit breaker body 1 is equipped with lock hole 103, the upper and lower sides of the opening of connecting piece 3 are equipped with spring cover 702, and spring cover 702 is equipped with socket at connecting piece 3 connection place, the middle part of connecting piece 3 is equipped with adjusting opening 301, and circuit breaker 701 is located in adjusting opening 301, the both sides of connecting piece 3 are slidably inserted with assembly piece 8, assembly piece 8 is made of clamping strip 802, and clamping strip 802 is fixed with spring buckle 801 at tail end, the front end outside of assembly piece 8 is equipped with insertion strip 803, insertion strip 803 is inserted into the socket of spring cover 702 and connecting piece 3, first side cover 2 and second side cover 4 are equipped with clamping groove 402 in the inside, and spring buckle 801 is clamped in corresponding clamping groove 402, assembly frame 7 is installed in assembly opening 102, connecting piece 3 is butt jointed with the front end opening of assembly frame 7, insertion strip 803 is inserted into the insertion slot of spring cover 702 in butt joint process, and connection is fixed, at this time, first side cover 2 and second side cover 4 are slid into from the guide piece 101 of the both sides of the front end of circuit breaker body 1 respectively, guide piece 101 and guide groove 403 are completed butt joint, at this time, spring buckle 801 and clamping groove 402 are completed butt joint, at this time, first side cover 2 and second side cover 4 are combined into middle cover, and butt joint 6 on middle cover is butt jointed with lock hole 103, two plug-in ends of plug-in piece 5 are inserted into lock hole 103 from butt joint 6, knob 501 is rotated to make rear side lock cylinder and lock hole 103 lock tightly closed, and fixed, the preliminary locking of middle cover is completed by the above-mentioned clamping and plug-in mode, then again through knob 501 and lock cylinder rotation and lock hole 103 locking, through the convenient installation mode, reduce the difficulty of later disassembly maintenance.

[0026] As Figures 2 to 8The utility model relates to a plastic -shell circuit breaker middle cover convenient to assemble and disassemble, including circuit breaker body 1, first side cover 2, connecting piece 3, second side cover 4 and plug connector 5, connecting piece 3 is installed in the front side of assembly frame 7, first side cover 2 and second side cover 4 are connected with the guide piece 101, and the front side of second side cover 4 is equipped with the accessory groove 401, and the upper and lower sides of first side cover 2 and second side cover 4 are all equipped with the butt joint 6, and the butt joint 6 corresponds with the lock hole 103, and the both plug ends of plug connector 5 are equipped with knob 501, and the plug end of plug connector 5 passes through butt joint 6 and inserts into the lock hole 103, and the lock cylinder of knob 501 is locked with the lock hole 103, and the rear side of first side cover 2 and second side cover 4 is all equipped with guide groove 403, and guide groove 403 is slidably installed on the corresponding guide piece 101, and first side cover 2 and second side cover 4 form middle cover, and middle cover is sleeved on the outside of connecting piece 3, and the spring buckle 801 and the insertion strip 803 of commonly used dismounting structure can cause abrasion, after abrasion, the slideable separation of the clamping strip 802 completes the overall dismounting, the replacement of the spring buckle 801 and the insertion strip 803 is completed, in the sliding process, the insertion column in the sliding slot of connecting piece 3 is separated from the insertion hole at the connecting place of the spring buckle 801 and the clamping strip 802, the dismounting is completed, and the convenient assembly mode reduces the overall operation difficulty, and simultaneously facilitates the installation of the middle cover formed by first side cover 2 and second side cover 4 and circuit breaker body 1, and reduces the operation difficulty.

[0027] Working principle: the utility model provides a plastic -shell circuit breaker middle cover convenient to assemble and disassemble, when using, assembly frame 7 is installed in the assembly mouth 102, connecting piece 3 is butt jointed with the front end opening of assembly frame 7, in the butt joint process, the insertion strip 803 is inserted into the insertion slot under the elastic pressing cover 702, and the connection and fixation are completed, at this moment, first side cover 2 and second side cover 4 are slid into the guide piece 101 from the both sides of the front end of circuit breaker body 1 respectively, and the guide piece 101 and guide groove 403 complete butt joint, at this moment, the spring buckle 801 and the clamping groove 402 complete butt joint, at this moment, first side cover 2 and second side cover 4 are combined into middle cover, and the butt joint 6 on the middle cover is butt jointed with the lock hole 103, and the both plug ends of plug connector 5 are inserted into the lock hole 103 from the butt joint 6, and the rear side lock cylinder is locked with the lock hole 103 and is closed by rotating knob 501, and the fixation is completed, the preliminary locking of middle cover is completed through the clamping and plug connection mode above, then the lock of lock hole 103 is locked through the rotation of knob 501 and lock cylinder, and the spring buckle 801 and the insertion strip 803 of commonly used dismounting structure can cause abrasion, after abrasion, the slideable separation of the clamping strip 802 completes the overall dismounting, the replacement of the spring buckle 801 and the insertion strip 803 is completed, in the sliding process, the insertion column in the sliding slot of connecting piece 3 is separated from the insertion hole at the connecting place of the spring buckle 801 and the clamping strip 802, the dismounting is completed, and the convenient assembly mode reduces the overall operation difficulty, and simultaneously facilitates the installation of the middle cover formed by first side cover 2 and second side cover 4 and circuit breaker body 1, and reduces the operation difficulty.

[0028] The utility model discloses an embodiment discloses the better embodiment, but is not limited to this, and the ordinary skill of the art, the spirit of the utility model is appreciated to the above -mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are in the protection range of the utility model.

Claims

1. A cover of a plastic case circuit breaker for facilitating assembly and disassembly, comprising a circuit breaker body (1), a first side cover (2), a connecting member (3), a second side cover (4) and a plug-in member (5), characterized in that: The front end surface of the circuit breaker body (1) is provided with an assembly opening (102) in the middle, and the assembly opening (102) is provided with an assembly frame (7), and the assembly frame (7) is provided with a circuit breaker (701), and the two sides of the opening of the assembly opening (102) are provided with guide pieces (101), and the front end surface of the circuit breaker body (1) is provided with lock holes (103), and the connecting piece (3) is installed in front of the assembly frame (7), and the first side cover (2) and the second side cover (4) are connected with the guide piece (101), and the front side of the second side cover (4) is provided with an accessory groove (401).

2. The cover of the plastic housing circuit breaker convenient to assemble and disassemble according to claim 1, characterized in that: The opening of the connecting piece (3) is provided with a spring cover (702) on the upper and lower sides, and the connecting piece (3) is provided with a socket at the connection, and the circuit breaker (701) is located in the adjusting opening (301).

3. The cover of claim 2 wherein: The two sides of the connecting piece (3) are slidably connected with a group connecting piece (8), the group connecting piece (8) is composed of a clamping strip (802), and the tail end of the clamping strip (802) is fixed with a spring buckle (801), and the front end of the group connecting piece (8) is provided with an insertion strip (803).

4. The cover of claim 3 wherein: The insertion strip (803) is inserted into the socket of the spring cover (702) and the connecting piece (3), the inner side of the first side cover (2) and the second side cover (4) is provided with a clamping groove (402), and the spring buckle (801) is clamped in the corresponding clamping groove (402).

5. The cover of claim 4 wherein: The upper and lower sides of the first side cover (2) and the second side cover (4) are provided with a butt joint (6), and the butt joint (6) corresponds to the lock hole (103), and the two insertion ends of the insertion piece (5) are provided with a knob (501), and the insertion end of the insertion piece (5) is inserted into the lock hole (103) through the butt joint (6), and the lock cylinder of the knob (501) is locked with the lock hole (103).

6. The cover of claim 5 wherein: The rear side of the first side cover (2) and the second side cover (4) is provided with a guide groove (403), and the guide groove (403) is slidably installed on the corresponding guide piece (101).

7. The cover of claim 6 wherein: The first side cover (2) and the second side cover (4) form a middle cover, and the middle cover is sleeved on the outside of the connecting piece (3).

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