Wiring terminal structure of molded case circuit breaker

Abstract

The utility model discloses a wiring terminal structure of a molded case circuit breaker, comprising a wiring frame which is internally provided with a wiring groove, the bottom of the wiring frame forms an arc-shaped section, and the arc-shaped section is bent upwards; the static contact comprises a wiring section, the wiring section is located on the arc-shaped section, the wiring section is in an arc shape matched with the arc-shaped section, and an opening of the wiring section faces the wiring groove; the wire pressing plate is located in the wiring groove, a screwing piece is arranged on the wire pressing plate, the screwing piece is connected to the upper portion of the wiring frame in a threaded mode, the screwing piece comprises a riveting part located in the wiring groove, a penetrating hole is formed in the wire pressing plate, the riveting part is sleeved with the wire pressing plate through the penetrating hole, the wire pressing plate is riveted with the riveting part, and the wire pressing plate is vertically limited by the riveting part in the vertical direction; and a gap is formed between the through hole of the wire pressing plate and the periphery of the riveting part. According to the utility model, the bottom of the wiring frame is arranged to be the arc-shaped section, and the wiring section of the static contact is arranged to be the matched arc-shaped section, so that the opening area of the wiring groove is increased, and a cable can be conveniently inserted for wiring.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field more specifically, relate to a kind of wiring terminal structure of moulded case circuit breaker. BACKGROUND

[0002] Prior art CN217822629U discloses a wiring terminal and circuit breaker, the wiring slot on the wiring frame is used to accommodate the conductive connecting piece, the baffle provided on the wiring frame can effectively avoid the conductive connecting piece from being inserted into the gap between the wiring frame and the circuit breaker shell, thereby avoiding wiring misoperation;The insulating piece is slidably connected with the baffle, and the sliding grooves at the opposite ends of the insulating piece can wrap the baffle, effectively playing an insulating role, providing good protection against electric shock and improving the safety performance of the circuit breaker during installation and use;The sliding grooves provided on both sides of the insulating piece can limit the lateral movement of the baffle, and the connection between the first clamping piece and the second clamping piece can prevent the baffle from being separated from the insulating piece in the vertical direction.

[0003] The wiring slot of the above-mentioned wiring terminal structure is a square opening, and during actual installation, if the cable is relatively thick, it may be difficult to install the cable when connecting it to the wiring slot due to the small opening of the wiring slot. SUMMARY

[0004] The utility model overcomes the deficiency of prior art, and its structure is reasonably designed, the bottom of the wiring frame is provided with an arc segment, and the wiring segment of the static contact is provided with an arc shape matching the arc segment, so that the opening area of the wiring slot is increased, and the insertion of the cable is facilitated.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A wiring terminal structure of a moulded case circuit breaker, comprising:

[0007] A wiring frame is provided with a wiring slot inside, and the bottom thereof is formed with an arc segment, which is curved upward;

[0008] A static contact includes a wiring segment, which is located on the arc segment and has an arc shape matching the arc segment, and the opening of the wiring segment is arranged towards the wiring slot;

[0009] A wire pressing plate is located in the wiring slot, and a screwing piece is provided on the wire pressing plate, which is threadedly connected above the wiring frame, the screwing piece includes a riveting part located in the wiring slot, the wire pressing plate is provided with a through hole, the wire pressing plate is sleeved on the riveting part through the through hole and is riveted with the riveting part, the wire pressing plate is vertically limited by the riveting part, and there is a gap between the through hole of the wire pressing plate and the outer periphery of the riveting part.

[0010] By adopting the above technical solution, and by setting the bottom of the wiring frame as an arc segment and setting the wiring segment of the stationary contact to an arc shape that matches the arc segment, the opening area of ​​the wiring slot is increased, facilitating cable insertion and wiring. Since the wiring segment is directly contacted and set on the arc segment, the cable placed in the wiring frame directly contacts and conducts through the wiring segment, reducing the need for other components to connect the wiring segment and the arc segment. This prevents the cable from needing to be electrically connected to the wiring segment through other components, reducing the temperature rise of the wiring plate and the stationary contact, resulting in better product performance and a longer service life. Furthermore, by providing a pressure plate and a tightening component, specifically a bolt threaded to the wiring frame with a riveted part at the bottom for riveting with the pressure plate, the tightening component and pressure plate can compress the cable located in the wiring frame. By rotating the tightening component, the pressure plate moves down until the cable is compressed.

[0011] Preferably, the pressure plate includes a downwardly curved main body, a perforation is provided on the main body, and a plurality of downwardly curved portions are provided on the outer peripheral edge of the main body. The bending angle of the curved portions is greater than the bending angle of the main body. The pressure plate is generally quadrilateral in shape, and the curved portions are located at the four corners of the main body.

[0012] By adopting the above technical solution, this setting allows the pressure plate to better cover the cable when pressing it, thus providing a certain degree of protection. Furthermore, since the cable has a circular cross-section, the shape of the pressure plate can better fit the outer circumference of the cable, resulting in a better pressing effect.

[0013] Preferably, a positioning structure is provided between the wiring segment and the arc segment so that the wiring segment is positioned and installed on the arc segment. The positioning structure includes a positioning hole provided on the arc segment and a positioning post provided on the wiring segment and inserted into the positioning hole.

[0014] By adopting the above technical solution, the positioning structure is also formed by the wiring segment and the arc segment themselves, rather than by connecting the wiring segment and the arc segment through other components. This can not only ensure the positioning stability between the wiring board and the arc segment, but also effectively reduce the temperature rise.

[0015] Preferably, the wiring segment is provided with anti-slip stripes.

[0016] By adopting the above technical solution, the anti-slip stripes increase the contact friction with the cable, thus better compressing the cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model;

[0018] Figure 2The utility model discloses a structure schematic diagram of the wiring frame is reflected to specific embodiment of the utility model.

[0019] Figure 3 The structure schematic diagram of the static contact is reflected to specific embodiment of the utility model Figure 1 ;

[0020] Figure 4 The structure schematic diagram of the static contact is reflected to specific embodiment of the utility model Figure 2 ;

[0021] Figure 5 The structure schematic diagram of the wiring plate is reflected to specific embodiment of the utility model;

[0022] Figure 6 The structure schematic diagram of the screwing part is reflected to specific embodiment of the utility model.

[0023] In the drawing: 1, wiring frame;11, wiring slot;12, arc section;2, static contact;21, wiring section;3, wiring plate;31, through hole;32, main body part;33, bending part;4, screwing part;41, riveting part;5, positioning structure;51, positioning hole;52, positioning column;6, antiskid stripe. Specific embodiments

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] As Figures 1-6 Indicated, a kind of wiring terminal structure of molded case circuit breaker, comprising: wiring frame 1, wiring slot 11 is provided in it, and its bottom forms arc section 12, arc section 12 is bent upwards and is arranged;Static contact 2, including wiring section 21, wiring section 21 is located on arc section 12, wiring section 21 is arc-shaped and is adapted to arc section 12, the opening of wiring section 21 is arranged towards wiring slot 11;Wiring plate 3, it is located in wiring slot 11, and it is provided with screwing part 4, screwing part 4 is screw-connected above wiring frame 1, screwing part 4 includes riveting part 41 in wiring slot 11, wiring plate 3 is provided with through hole 31, wiring plate 3 is set on riveting part 41 by through hole 31 and is riveted with riveting part 41, wiring plate 3 is limited by riveting part 41 in vertical direction, and there is gap between the through hole 31 of wiring plate 3 and the outer periphery of riveting part 41.

[0026] By adopting the technical scheme, the wiring frame 1 is specifically installed on the base of the molded case circuit breaker, and the base is provided with an arc-shaped groove, so as to be matched with the arc-shaped section 12 and to be fixedly installed with the wiring frame 1. In the wiring frame 1, the bottom is provided with the arc-shaped section 12, and the wiring section 21 of the static contact 2 is provided with an arc-shaped section matched with the arc-shaped section 12, so that the opening area of the wiring slot 11 is increased, and the insertion of the cable into the wiring is facilitated. Since the wiring section 21 is directly arranged on the arc-shaped section 12, the cable inserted into the wiring frame 1 directly contacts and conducts with the wiring section 21, the wiring section 21 and the arc-shaped section 12 are connected through other components, the cable needs to be electrically connected with the wiring section 21 through other components, the temperature rise of the wiring board and the static contact 2 is reduced, the product performance is better, and the service life is longer. In addition, the pressure plate 3 and the rotating part 4 are arranged, the rotating part 4 can be a bolt threadedly connected with the wiring frame 1, the bottom of the bolt is provided with a riveting part 41 riveted with the pressure plate 3, and the arrangement of the rotating part 4 and the pressure plate 3 can press the cable in the wiring frame 1, and the pressure plate 3 is lowered by rotating the rotating part 4 until the cable is pressed.

[0027] The pressure plate 3 includes a downwardly bent main body 32, a through hole 31 is arranged on the main body 32, and a plurality of downwardly bent bending parts 33 are arranged on the outer peripheral edge of the main body 32. The bending angle of the bending part 33 is greater than the bending angle of the main body 32, the pressure plate 3 is in a quadrilateral shape as a whole, and the bending part 33 is arranged at the four corners of the main body 32. In this way, when the pressure plate 3 presses the cable, it can better cover the cable and provide protection for the cable. Since the cable is circular in cross section, the pressure plate 3 is better adapted to the outer periphery of the cable, and the pressing effect on the cable is better.

[0028] In addition, the positioning structure 5 is arranged between the wiring section 21 and the arc-shaped section 12 to position and install the wiring section 21 on the arc-shaped section 12. The positioning structure 5 includes a positioning hole 51 arranged on the arc-shaped section 12 and a positioning column 52 arranged on the wiring section 21 and inserted into the positioning hole 51. The positioning structure 5 is formed by the wiring section 21 and the arc-shaped section 12 themselves, rather than by other components connecting the wiring section 21 and the arc-shaped section 12. This can ensure the positioning stability between the wiring board and the arc-shaped section 12 and reduce the temperature rise.

[0029] In addition, the wiring section 21 is provided with anti-skid stripes 6, which increase the contact friction with the cable and better press the cable.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A terminal structure of a molded case circuit breaker, characterized by, The utility model relates to a terminal block, which comprises: a terminal block (1) provided with a terminal slot (11) and an arc-shaped section (12) formed at the bottom of the terminal block (1) and bent upward; a stationary contact (2) comprising a terminal section (21) located on the arc-shaped section (12) and having an arc-shaped structure matching the arc-shaped section (12), wherein the opening of the terminal section (21) is arranged to face the terminal slot (11); a terminal pressing plate (3) located in the terminal slot (11) and provided with a screwing part (4) above the terminal block (1), wherein the screwing part (4) comprises a riveting part (41) located in the terminal slot (11), the terminal pressing plate (3) is provided with a through hole (31), the terminal pressing plate (3) is sleeved on the riveting part (41) through the through hole (31) and is riveted with the riveting part (41), the terminal pressing plate (3) is vertically limited by the riveting part (41) from top to bottom, and a gap is formed between the through hole (31) of the terminal pressing plate (3) and the outer periphery of the riveting part (41).

2. The terminal structure of a molded case circuit breaker according to claim 1, wherein The terminal pressing plate (3) comprises a main body (32) bent downward, the through hole (31) is arranged on the main body (32), and the outer periphery edge of the main body (32) is provided with a plurality of bent portions (33) bent downward.

3. The terminal structure of a molded case circuit breaker according to claim 2, wherein The bending angle of the bent portion (33) is greater than that of the main body (32).

4. The terminal structure of a molded case circuit breaker according to claim 2 or 3, wherein The terminal pressing plate (3) has a quadrilateral shape as a whole, and the bent portion (33) is arranged at the four corners of the main body (32).

5. The terminal structure of a molded case circuit breaker according to claim 1 or 2 or 3, wherein The terminal section (21) and the arc-shaped section (12) are provided with a positioning structure (5) to enable the terminal section (21) to be positioned and installed on the arc-shaped section (12).

6. The terminal structure of a molded case circuit breaker according to claim 5, wherein The positioning structure (5) comprises a positioning hole (51) arranged on the arc-shaped section (12) and a positioning column (52) arranged on the terminal section (21) and inserted into the positioning hole (51).

7. The terminal structure of a molded case circuit breaker according to claim 5, wherein The terminal section (21) is provided with anti-skid stripes (6).

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