Contactor

Abstract

Provided is a contactor. The device comprises a base which is internally provided with an electromagnetic mechanism; the base is internally provided with a plurality of groups of first accommodating cavities which are arranged side by side, and the first accommodating cavities are suitable for accommodating the moving contacts and the static contacts; a plurality of static contacts; the junction boxes are arranged at the two ends of the base, and a plurality of groups of second accommodating cavities are formed in the junction boxes; the base is internally provided with a storage space, the storage space comprises a concave groove integrally formed in the base and a baffle plate arranged at the front end of a static contact, the upper end of the baffle plate is provided with a convex rib arranged towards the static contact, and a gap is formed between the baffle plate and the front end of the static contact; the storage space is arranged on the base, so that abnormal phenomena such as power failure, action clamping stagnation noise and the like due to the fact that foreign matters such as dust and metal splashing fall on a silver point, a moving assembly or an iron core working pole face can be effectively avoided.

Description

Technical Field

[0001] The utility model specifically relates to a contactor. Background Art

[0002] A contactor refers to an electrical appliance that uses a coil to pass a current to generate a magnetic field in industrial electricity, so that the contact closes to control the load. Its working principle is as follows: when the contactor coil is energized, the coil current will generate a magnetic field. The generated magnetic field makes the static iron core generate electromagnetic suction to attract the plug core, driving the moving contact of the contactor to move, causing the normally closed contact to disconnect and the normally open contact to close. The two are linked; when the coil is de-energized, the electromagnetic suction disappears, and the plug core is released under the action of the release spring, restoring the contacts, the normally open contact disconnects, and the normally closed contact closes.

[0003] During the use of existing contactors, debris is generated due to mechanical friction and collision between components, silver contact splashes or particulate matter are formed during the electrical contact process. In addition, when wiring, especially when connecting multi-strand wires, it is easy for broken wires to fall into the product interior, and external dust falls on the silver points or the iron core pole faces. For example, a contactor and an electrical system disclosed in Chinese Patent CN218414414U, the particulate matter generated when the moving and static contacts are separated and combined will fall into the product interior, resulting in jamming of the moving components or noise in the product, seriously affecting the service life of the product and the customer experience. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a contactor.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A contactor, comprising:

[0007] A base, which is internally provided with an electromagnetic mechanism;

[0008] A base, internally provided with a plurality of groups of first accommodation cavities arranged side by side. The first accommodation cavities are adapted to accommodate moving contacts and static contacts, and the side wall of the base is correspondingly provided with a plurality of groups of lead-out holes communicating with the first accommodation cavities;

[0009] A plurality of static contacts, the first ends of which are placed in the first accommodation cavities, and the second ends of which extend to the outside through the lead-out holes;

[0010] A moving contact assembly, which includes a contact support and a plurality of moving contacts fixedly arranged by the contact support. The moving contacts are placed in the first accommodation cavities and are located above the static contacts, and the contact support can be driven by the electromagnetic mechanism to make the moving contacts move relative to the static contacts.

[0011] The base is provided with a storage space, which includes a recess formed integrally on the base and a baffle provided at the front end of the static contact. A rib is provided at the upper end of the baffle and extends towards the static contact, and there is a gap between the baffle and the front end of the static contact.

[0012] A through hole for the contact support to pass through is formed between the oppositely arranged baffles.

[0013] Both sides of the baffle extend towards the static contact to form two side edges, and protrusions are relatively provided on the inner sides of the side edges.

[0014] The recess is U-shaped.

[0015] At least one junction box is provided at any end of the base. Several groups of second accommodation cavities are provided inside the junction box. Through holes communicating with the second accommodation cavities are correspondingly formed on the side wall of the junction box facing the base. The second end of the static contact extends into the through holes, and several groups of wiring ports communicating with the second accommodation cavities are correspondingly formed on the junction box.

[0016] A boss is provided at the bottom of the side wall at the front end or / and the rear end of the base. The junction box is located above the boss and abuts against the boss. The bottom surface of the junction box is provided with clamping feet, and clamping grooves adapted to the clamping feet are correspondingly formed on the top surface of the boss. The clamping feet are snapped into the clamping grooves.

[0017] An avoidance space is provided between the side wall of the junction box and the side wall of the base, and the avoidance space communicates with the lead-out hole and the lead-in hole respectively.

[0018] The side wall of the junction box is provided with abutting feet facing the base, and the abutting feet are used to press the static contact against the base.

[0019] An arc extinguishing chamber is provided in the first accommodation cavity, and a heat dissipation hole is formed between the bottom of the arc extinguishing chamber and the static contact.

[0020] The contactor is further provided with a cover plate, which is fixedly connected to the base. An abutting seat for pressing the arc extinguishing chamber against the base is provided inside the cover plate.

[0021] The beneficial effects of the present utility model: A storage space is provided inside the base, which can effectively prevent foreign matters such as dust and metal splashes from falling on the silver points, moving components or the working surfaces of the iron cores, and avoid abnormal phenomena such as non-electrification, action jamming and noise. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the present utility model.

[0023] Figure 2 is a schematic cross-sectional diagram of the present utility model.

[0024] Figure 3 For Figure 2 The enlarged schematic view at position A in

[0025] Figure 4 The internal schematic view of the base of the present utility model.

[0026] Figure 5 The three-dimensional schematic view of the base of the present utility model.

[0027] Figure 6 The top view of the base of the present utility model.

[0028] Figure 7 The sectional schematic view of the base of the present utility model.

[0029] Figure 8 The structural schematic view of the junction box of the present utility model.

[0030] Figure 9 The sectional schematic view of the junction box of the present utility model.

[0031] Figure 10 The structural schematic view of the cover plate of the present utility model. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] As Figures 1 to 2 shown, the present utility model discloses a contactor, which can be fixedly mounted on an installation track in a wall-mounted manner, and it includes:

[0035] A base, which is internally provided with an electromagnetic mechanism;

[0036] A base 200, see Figure 4 , Figure 5 , Figure 6 and Figure 7, inside which there are several groups of first accommodation cavities 201 arranged side by side. The first accommodation cavities are adapted to accommodate moving contacts and static contacts 600. On the side wall of the base 200, there are several groups of lead-out holes 202 corresponding to and communicating with the first accommodation cavities. At the same time, on the side walls on both sides inside the lead-out holes, there are clamping grooves. The edges of the static contacts are placed in these clamping grooves, and their close contact with the base is restricted by the clamping grooves;

[0037] Several static contacts 600, which are bent parts. Their first ends are placed in the first accommodation cavities 201, and their second ends extend to the outside through the lead-out holes 202;

[0038] At least one junction box 300 is provided at any one end 300 of the base 200. Refer to Figure 8 and Figure 9 , in this embodiment, it is changed to two, which are respectively arranged at both ends of the base 200. Inside, there are several groups of second accommodation cavities 301. On the side wall of the junction box 300 facing the base, there are several groups of introduction holes 303 corresponding to and communicating with the second accommodation cavities 301. The second ends of the static contacts 600 extend into the introduction holes 303. On the junction box 300, there are several groups of wiring ports 302 corresponding to and communicating with the second accommodation cavities 301;

[0039] The moving contact assembly 700 includes a contact support 710 and several moving contacts 720 fixedly arranged by the contact support 710. The moving contacts 720 are placed in the first accommodation cavities 201 and are located above the static contacts 600. And the contact support 710 can be driven by the electromagnetic mechanism 500 so that the moving contacts move relative to the static contacts 600.

[0040] As Figure 3 shown, there is a storage space 900 inside the base 200. The storage space 900 includes a recessed groove 910 integrally formed on the base 200 and a baffle 920 arranged at the front end of the static contact 600. And at the upper end of the baffle 920, there is a rib 930 arranged in the direction towards the static contact 600. And there is a gap between the baffle 920 and the front end of the static contact 600. The depth of the recessed groove is 2.5, which can effectively block foreign objects generated when the moving and static contacts are separated and combined. And by using the rib, when it is vertically hung, the foreign objects in the recessed groove will not fall to the contact support 710;

[0041] A through hole 950 for the contact support to pass through is formed between the oppositely arranged baffles 920. Among them, with the design of the contact support combined with the baffle 920, the connection port inside the entire base to the base space is blocked, so that the objects in the storage space 900 will not enter the base.

[0042] On both sides of the baffle 920, extensions are formed towards the direction of the static contact to form two side edges 940. Oppositely arranged protrusions 941 are provided on the inner sides of the side edges 940. The two protrusions are arranged oppositely to limit the static contact and play a role in fixing the static contact. At the same time, when the contactor is vertically hung, the rib, combined with the baffle and the side edges, forms a storage groove arranged below the static contact, so that it can further ensure that foreign objects will not fall out of the storage space.

[0043] The recessed groove 910 is arranged in a U shape, so that foreign objects generated by the separation and combination of the static contact and the moving contact can better fall into the recessed groove.

[0044] In this embodiment, the static contact is a bent member. The first end of the static contact is placed in the first accommodation cavity of the base, and the second end of the static contact extends into the introduction hole of the junction box. A moving contact is also arranged in the first accommodation cavity of the base. When the moving contact is separated from the static contact, the arc energy generated between the contacts is discharged from the junction box along the bent static contact. The bent static contact can provide a longer cooling path for the arc, and the arc is not likely to extend out of the connection port, avoiding breakdown damage to the electronic products in the control cabinet and improving the product safety. In addition, the black residue generated by the arc is not likely to splash out directly, improving the user experience.

[0045] There is no specific limitation on the bent shape of the static contact. As an implementation manner, it can be a multi-level stepped shape or the "Z" - shaped structure in this embodiment.

[0046] There is no specific limitation on the number of groups of the first accommodation cavities of the base. It can be one group or multiple groups in this embodiment. Specifically, refer to Figure 4 、 Figure 5 and Figure 6 , the first accommodation cavity can be three groups. The three first accommodation cavities are arranged in parallel, and each first accommodation cavity contains two first accommodation chambers that are symmetric about the left and right (in the Figure 6 direction). Junction boxes are connected to both sides of the base.

[0047] A blocking strip is arranged between the connection ports of the junction box to protect the end face of the second end of the static contact.

[0048] Convex platforms 210 are provided at the bottom of the side walls at the front end or / and the rear end of the base. The junction box 300 is located above the convex platforms 210 and abuts against the convex platforms 210.

[0049] The bottom surface of the junction box 300 is provided with clamping feet 330, and clamping grooves 240 adapted to the clamping feet 330 are correspondingly opened on the top surface of the convex platforms 210. The clamping feet 330 are snapped into the clamping grooves 240.

[0050] As another embodiment, the two can be in the opposite design, that is, the clamping groove is arranged at the bottom of the junction box, and the clamping foot is arranged on the convex platform.

[0051] The cooperation of the two facilitates assembly.

[0052] Meanwhile, a slider 310 is provided at the upper end of the side wall of the junction box.

[0053] An avoidance space 220 is provided between the side wall of the junction box 300 and the side wall of the base 200. The avoidance space 220 is communicated with the lead-out hole 202 and the lead-in hole 303 respectively. A static contact passes through the avoidance space. When an arc is generated, the avoidance space between the base and the junction box can disperse the arc energy and improve the arc extinguishing effect.

[0054] The side wall of the junction box 300 is provided with an abutting foot 320 facing the base 200. The abutting foot 320 is used to press the static contact 600 onto the base 200. The arrangement of the abutting foot can simply and conveniently fix the position of the static contact. Refer to Figure 2 , taking the "Z"-shaped static contact as an example, the first end of the static contact extends into the first accommodating cavity and fits with the bottom of the first accommodating cavity. The second end of the static contact extends into the second accommodating cavity of the junction box. After the junction box is connected to the base, the abutting foot of the junction box presses the middle section of the static contact against the side wall of the base to fix the position of the static contact. The structure is simple and is conducive to the loading and unloading of the static contact.

[0055] No specific limitation is made on the shape of the abutting foot. As an implementation manner, each group of abutting feet is arranged in pairs, and a gap is left between each pair of abutting feet.

[0056] No specific limitation is made on the connection manner between the base and the junction box. As an implementation manner, the base and the junction box can be directly fixedly connected by screws. As another implementation manner, refer to Figure 1 and Figure 2 , a sliding groove 250 is formed in the side wall of the base, and a slider 310 adapted to the sliding groove 250 is correspondingly arranged on the side wall of the junction box. The base is slidably connected to the junction box, and the junction box is fixed by using a cover plate.

[0057] Meanwhile, the sliding connection method is more convenient when disassembling or assembling the junction box.

[0058] An arc extinguishing chamber 800 is arranged in the first accommodating cavity 201. A heat dissipation hole 230 is formed between the bottom of the arc extinguishing chamber 800 and the static contact 600. The arc passes through the avoidance space and then discharges the energy through a plurality of movement channels, so that the arc energy is not easy to accumulate, and the arc extinguishing effect is further improved.

[0059] See Figure 10, the contactor is further provided with a cover plate 400, which is fixedly connected to the base 200 and abuts against the junction box 300. Inside the cover plate 400, there is an abutting seat 410 for pressing the arc extinguishing chamber 800 against the base 200. An abutting platform extends out from the bottom end of the abutting seat. The abutting platform fits against the inner wall of the arc extinguishing part and is located on the side close to the contact support. The abutting seat is adapted to the top end and the inner wall of the arc extinguishing part, which can prevent the arc from escaping through the cover plate and is suitable for guiding the arc energy to be discharged from the base through the lead-out hole.

[0060] A partition plate 420 is arranged at the bottom of the cover plate. The partition plate 420 is located between the contact support and the arc extinguishing chamber, which can prevent the arc light from escaping through the cover plate and is suitable for guiding the arc energy to be discharged from the base through the lead-out hole.

[0061] When the moving contact is separated from the static contact, an arc is generated in the first accommodating cavity of the base. Part of the energy of the arc is discharged from the contactor along the surface of the bent static contact, and part of the energy is discharged from the contactor through the heat dissipation holes. The energy of the arc is quickly dispersed during the movement process, and it will not cause breakdown damage to the electronic products in the control cabinet. The product has higher safety. In addition, the black residue generated by the arc is not easily splashed out directly, which also improves the user experience. The black residue generated by the arc is completely isolated from the route into the base due to the existence of the storage space and then remains in the storage space, without affecting the electromagnetic mechanism in the base.

[0062] The embodiments should not be regarded as a limitation to the present invention, but any improvement based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A contactor, comprising: A base (100) having an electromagnetic mechanism (500) disposed therein; A base (200) having a plurality of groups of first accommodating cavities (201) arranged side by side therein, the first accommodating cavities being suitable for accommodating moving contacts and stationary contacts (600), and a plurality of groups of lead-out holes (202) communicating with the first accommodating cavities being correspondingly provided on the side walls of the base (200); a plurality of stationary contacts (600), wherein a first end of the stationary contacts is disposed in the first accommodating cavity (201), and a second end of the stationary contacts extends from the lead-out hole (202) to the outside; A moving contact assembly (700) comprising a contact support (710) and a plurality of moving contacts (720) fixedly arranged by the contact support (710), wherein the moving contacts (720) are disposed in the first accommodating cavity (201) and are located above the stationary contacts (600), and the contact support (710) can be driven by the electromagnetic mechanism (500) so that the moving contacts move relative to the stationary contacts (600). The invention is characterized in that: a storage space (900) is provided in the base (200), the storage space (900) comprises a recessed groove (910) integrally formed on the base (200) and a baffle (920) arranged at the front end of the stationary contact (600), and a convex rib (930) arranged in the direction of the stationary contact is provided at the upper end of the baffle (920), and a gap exists between the baffle (920) and the front end of the stationary contact (600).

2. A contactor according to claim 1, characterized in that: A through hole (950) through which the contact support can pass is formed between the baffles (920) arranged opposite to each other.

3. A contactor according to claim 1, characterized in that: Both sides of the baffle (920) extend towards the static contact to form two side edges (940), and protrusions (941) are arranged opposite to each other on the inner sides of the side edges (940).

4. A contactor according to claim 1, characterized in that: The recessed groove (910) is arranged in a U shape.

5. A contactor according to claim 1, characterized in that: At least one junction box (300) is provided at any end of the base (200), a plurality of groups of second accommodating cavities (301) are provided inside the junction box (300), a plurality of groups of introduction holes (303) communicating with the second accommodating cavities (301) are correspondingly provided on the side wall of the junction box (300) facing the base, the second end of the static contact (600) extends into the introduction hole (303), and a plurality of groups of wiring ports (302) communicating with the second accommodating cavities (301) are correspondingly provided on the junction box (300).

6. A contactor according to claim 5, characterized in that: A boss (210) is provided at the bottom of the side wall at the front end or / and the rear end of the base, the junction box (300) is located above the boss (210) and abuts against the boss (210), a clamping pin (330) is provided on the bottom surface of the junction box (300), a clamping slot (240) adapted to the clamping pin (330) is correspondingly provided on the top surface of the boss (210), and the clamping pin (330) is clamped into the clamping slot (240).

7. A contactor according to claim 5, characterized in that: An escape space (220) is provided between the side wall of the junction box (300) and the side wall of the base (200), and the escape space (220) is respectively connected to the lead-out hole (202) and the lead-in hole (303).

8. A contactor according to claim 7, characterized in that: A side wall of the junction box (300) is provided with an abutment foot (320) arranged toward the base (200), and the abutment foot (320) is used to press the static contact (600) against the base (200).

9. A contactor according to claim 1, characterized in that: An arc extinguishing chamber (800) is provided in the first accommodating cavity (201), and a heat dissipation hole (230) is formed between the bottom of the arc extinguishing chamber (800) and the static contact (600).

10. A contactor according to claim 9, characterized in that: The contactor is also provided with a cover plate (400) fixedly connected to the base (200), and an abutment seat (410) for pressing the arc extinguishing chamber (800) against the base (200) is provided inside the cover plate (400).

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