Release assembling structure for circuit breaker

Abstract

The utility model discloses a release assembling structure for a circuit breaker, which comprises a circuit breaker shell (1), a mounting groove (2) is arranged in the middle of the circuit breaker shell (1), one end of the mounting groove (2) is communicated with the outside and forms a mounting port (3), a positioning groove (4) is arranged on the circuit breaker shell (1) at the other end of the mounting groove (2), and an electromagnetic release (5) is buckled and connected in the mounting groove (2). The end part of the electromagnetic release (5) is buckled and connected with the positioning groove (4) through a positioning piece (6), and a middle cover (7) is detachably connected to the circuit breaker shell (1) on the outer side of the mounting opening (3). According to the utility model, the detection accuracy of the circuit breaker can be improved.

Description

Technical Field

[0001] The utility model relates to a circuit breaker, in particular to a release assembly structure for a circuit breaker. Background Art

[0002] The electromagnetic leakage protector is an electromagnetic release device added to the circuit breaker to detect leakage problems. When leakage occurs in the external circuit, the electromagnetic release device is pushed out and drives the actuator in the circuit breaker to operate, thereby realizing the leakage opening function of the circuit breaker. The existing installation method of the electromagnetic release device is to directly install the electromagnetic release device in the circuit breaker housing, and fix the electromagnetic release device by connecting the circuit breaker housings on both sides to each other, so that the electromagnetic release device cannot be taken out separately without disassembling the circuit breaker housing.

[0003] However, the defect of this structure is that, since the electromagnetic leakage protector contains both an electromagnetic coil with an overload protection function and an electromagnetic release with a leakage protection function, when the manufacturer performs a functional test on the assembled circuit breaker, the magnetic fields generated by the electromagnetic coil and the electromagnetic release will interfere with each other, thereby affecting the manufacturer's detection accuracy of the circuit breaker. On the other hand, since the electromagnetic coil will form a delayed protection when the circuit is overloaded, and the electromagnetic release will form an instantaneous protection when the circuit leaks, when the electromagnetic coil is in the delayed protection state, the magnetic field it generates will directly trigger the electromagnetic release to be ejected, so that the operator cannot determine whether the opening action of the circuit breaker is triggered by the electromagnetic coil in this state, which further reduces the detection accuracy of the circuit breaker.

[0004] Therefore, the existing circuit breaker has the problem of low detection accuracy. Utility Model Content

[0005] The purpose of the utility model is to provide a release assembly structure for a circuit breaker, which can improve the detection accuracy of the circuit breaker.

[0006] The technical solution of the utility model is as follows: a release assembly structure for a circuit breaker, comprising a circuit breaker housing, a mounting groove is provided in the middle of the circuit breaker housing, one end of the mounting groove is communicated with the outside and forms a mounting opening, a positioning groove is provided on the circuit breaker housing at the other end of the mounting groove, an electromagnetic release is buckled and connected in the mounting groove, the end of the electromagnetic release is buckled and connected to the positioning groove via a positioning piece, and an intermediate cover is detachably connected to the circuit breaker housing outside the mounting opening.

[0007] In the aforementioned assembly structure of a release for a circuit breaker, the circuit breaker housing is formed by detachably connecting a plurality of circuit breaker single shells, a placement cavity is formed between adjacent circuit breaker single shells, and the mounting groove is arranged in one of the placement cavities.

[0008] In the aforementioned assembly structure of a circuit breaker release, the placement cavity where the electromagnetic release is located is the first placement cavity, and the placement cavity adjacent to the first placement cavity is the second placement cavity. A transmission mechanism connected to the circuit breaker single shell is provided in the first placement cavity outside the electromagnetic release, and a circuit breaker assembly is provided in the second placement cavity on one side of the transmission mechanism. An actuator is provided in the circuit breaker assembly, and the transmission mechanism and the actuator are transmission-connected. When in use, the electromagnetic release pushes the transmission mechanism, and then the transmission mechanism triggers the actuator to open the circuit breaker assembly after being pushed.

[0009] In the aforementioned assembly structure of a release for a circuit breaker, slide grooves are provided on the circuit breaker housing on both sides of the installation opening, both sides of the middle cover are slidably connected in the slide grooves, and a fixing portion detachably connected to the circuit breaker housing is provided on the top of the middle cover.

[0010] In the aforementioned assembly structure of a release for a circuit breaker, the four sides of each circuit breaker single shell are connected to each other via a connecting piece to form a circuit breaker housing, and a connecting hole for the connecting piece to pass through is provided on the fixing portion.

[0011] In the aforementioned assembly structure of a release for a circuit breaker, a limiting surface for limiting the height of the intermediate cover is provided on the side wall of the circuit breaker housing, and the outer wall of the intermediate cover after installation is flush with the side wall of the circuit breaker housing.

[0012] Compared with the prior art, the utility model, through the structural cooperation between the circuit breaker housing and the middle cover, enables the circuit breaker to reserve an installation groove for installing the electromagnetic release after being assembled, so that the electromagnetic release can be directly buckled into the installation groove by plugging after wiring, that is, the electromagnetic release can be separately disassembled and assembled; and based on this structure, the manufacturer can first perform an overload test on the circuit breaker without the electromagnetic release installed during the test, thereby effectively avoiding the influence of the electromagnetic release on the test result; after the circuit breaker test is completed, the operator installs the electromagnetic release on the circuit breaker and performs a leakage test, thereby ensuring the assembly and test effect of the circuit breaker.

[0013] In addition, the utility model can position the electromagnetic release after installation through the structural cooperation of the positioning groove and the positioning piece, thereby ensuring the installation stability of the electromagnetic release; by limiting the connection structure of the middle cover and the circuit breaker housing, the middle cover can be connected and fixed to the circuit breaker housing through the connecting piece after insertion, thereby ensuring the assembly stability of the circuit breaker and avoiding the loosening and separation of the middle cover during later use.

[0014] Therefore, the utility model can improve the detection accuracy of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the structure of the utility model when the electromagnetic release is disassembled;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a side view of the utility model after the middle cover is installed.

[0018] The marks in the accompanying drawings are: 1-circuit breaker housing, 2-installation groove, 3-installation port, 4-positioning groove, 5-electromagnetic release, 6-positioning piece, 7-middle cover, 8-first placement cavity, 9-second placement cavity, 10-transmission mechanism, 11-actuator, 12-slide groove, 13-fixing part, 14-connecting hole, 15-limiting surface, 101-circuit breaker single shell. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] Embodiment. A circuit breaker release assembly structure, comprising: Figure 1 As shown, the circuit breaker housing 1 includes a mounting groove 2, a mounting groove 2 is provided in the middle of the circuit breaker housing 1, one end of the mounting groove 2 is connected to the outside and forms a mounting opening 3, a positioning groove 4 is provided on the circuit breaker housing 1 at the other end of the mounting groove 2, an electromagnetic release 5 is snap-fitted and connected in the mounting groove 2, and the end of the electromagnetic release 5 is snap-fitted and connected to the positioning groove 4 via a positioning member 6, and an intermediate cover 7 is detachably connected to the circuit breaker housing 1 outside the mounting opening 3.

[0021] The circuit breaker housing 1 is formed by detachably connecting a plurality of circuit breaker single shells 101 , and a placement cavity is formed between adjacent circuit breaker single shells 101 . The mounting groove 2 is disposed in one of the placement cavities.

[0022] The placement cavity where the electromagnetic release 5 is located is the first placement cavity 8, and the placement cavity adjacent to the first placement cavity 8 is the second placement cavity 9. The first placement cavity 8 outside the electromagnetic release 5 is provided with a transmission mechanism 10 connected to the circuit breaker single shell 101, and the second placement cavity 9 on one side of the transmission mechanism 10 is provided with a circuit breaker assembly, and the circuit breaker assembly is provided with an actuator 11. The transmission mechanism 10 and the actuator 11 are both selected from the transmission and actuator mechanisms of conventional leakage protectors. The transmission mechanism 10 and the actuator 11 are connected in transmission. When in use, the electromagnetic release 5 pushes the transmission mechanism 10, and then the transmission mechanism 10 triggers the actuator 11 to open the circuit breaker assembly after being pushed. An opening for connecting the two to each other can be provided on the circuit breaker single shell 101.

[0023] The wires of the circuit breaker assembly can extend through the circuit breaker single shell 101 to the first placement cavity 8, so that the operator can pull out the wires after the circuit breaker is assembled and connect the electromagnetic release 5, thereby achieving electrical connection between the electromagnetic release 5 and the circuit breaker assembly.

[0024] Slide grooves 12 are provided on the circuit breaker housing 1 at both sides of the installation opening 3 , and both sides of the middle cover 7 are slidably connected in the slide grooves 12 . A fixing portion 13 detachably connected to the circuit breaker housing 1 is provided on the top of the middle cover 7 .

[0025] The four sides of each circuit breaker single shell 101 are connected to each other through connecting pieces to form a circuit breaker housing 1. The fixing portion 13 is provided with a connecting hole 14 for the connecting piece to pass through. The connecting piece can be a rivet or a screw.

[0026] A limiting surface 15 for limiting the height of the intermediate cover 7 is provided on the side wall of the circuit breaker housing 1 . The outer wall of the intermediate cover 7 after installation is flush with the side wall of the circuit breaker housing 1 .

[0027] Working principle of the utility model: When the circuit breaker is assembled and functionally tested, the operator can first remove the electromagnetic release 5 and then test the overload protection of the circuit breaker, thereby effectively avoiding the electromagnetic release 5 from affecting the electromagnetic coil when the circuit is in an overload state, and improving its detection accuracy. After the overload protection test is completed, the operator connects the electromagnetic release 5 and inserts it into the installation slot 2 from the installation port 3, and buckles the middle cover 7 to fix it; then the circuit breaker is tested for leakage and short-circuit protection. Since the protection action of the electromagnetic release 5 is instantaneous protection, and the protection action of the electromagnetic coil is delayed protection, the operator can judge whether the electromagnetic release 5 is normal by the disconnection time of the circuit breaker, that is, to achieve the detection effect.

[0028] After the inspection is completed, the operator sequentially passes the connectors through each circuit breaker single shell 101 and the connecting holes 14 to connect the intermediate cover 7 and the circuit breaker housing 1 to each other, thereby achieving a fixing effect on the electromagnetic release 5 to prevent the electromagnetic release 5 from loosening and tripping.

Claims

1. A release assembly structure for a circuit breaker, characterized in that: The invention comprises a circuit breaker housing (1), wherein a mounting groove (2) is provided in the middle of the circuit breaker housing (1), one end of the mounting groove (2) is connected to the outside and forms a mounting opening (3), a positioning groove (4) is provided on the circuit breaker housing (1) at the other end of the mounting groove (2), an electromagnetic release (5) is buckled and connected in the mounting groove (2), an end of the electromagnetic release (5) is buckled and connected to the positioning groove (4) via a positioning piece (6), and an intermediate cover (7) is detachably connected to the circuit breaker housing (1) outside the mounting opening (3).

2. The circuit breaker release assembly structure according to claim 1, characterized in that: The circuit breaker housing (1) is formed by detachably connecting a plurality of circuit breaker single shells (101); a placement cavity is formed between adjacent circuit breaker single shells (101); and the mounting groove (2) is arranged in one of the placement cavities.

3. The circuit breaker release assembly structure according to claim 2, characterized in that: The placement cavity where the electromagnetic release (5) is located is referred to as the first placement cavity (8), and the placement cavity adjacent to the first placement cavity (8) is referred to as the second placement cavity (9). A transmission mechanism (10) connected to a circuit breaker single shell (101) is arranged in the first placement cavity (8) outside the electromagnetic release (5), a circuit breaker assembly is arranged in the second placement cavity (9) on one side of the transmission mechanism (10), and an actuator (11) is arranged in the circuit breaker assembly. The transmission mechanism (10) and the actuator (11) are transmission-connected. When in use, the electromagnetic release (5) pushes the transmission mechanism (10), and then the transmission mechanism (10) triggers the actuator (11) to operate after being pushed, so that the circuit breaker assembly is opened.

4. The circuit breaker release assembly structure according to claim 2, characterized in that: The circuit breaker housing (1) is provided with sliding grooves (12) on both sides of the installation opening (3), the two sides of the middle cover (7) are slidably connected in the sliding grooves (12), and the top of the middle cover (7) is provided with a fixing portion (13) that is detachably connected to the circuit breaker housing (1).

5. The circuit breaker release assembly structure according to claim 4, characterized in that: The four sides of each circuit breaker single shell (101) are connected to each other via a connecting piece to form a circuit breaker housing (1), and a connecting hole (14) for the connecting piece to pass through is provided on the fixing portion (13).

6. The circuit breaker release assembly structure according to claim 4, characterized in that: A limiting surface (15) for limiting the height of the intermediate cover (7) is provided on the side wall of the circuit breaker housing (1); the outer wall of the intermediate cover (7) is flush with the side wall of the circuit breaker housing (1) after installation.

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