Direct current contactor

Abstract

The utility model discloses a direct current contactor, which comprises a main loop assembly at the top, two electrified fasteners respectively positioned on two sides of the main loop assembly, and an electromagnet assembly positioned on the lower side of the main loop assembly, and comprises a U-shaped iron yoke and a bracket, the U-shaped iron yoke is arranged on the periphery of the electromagnet assembly in a sleeving mode. The support comprises a mounting plate, supporting plates on the two sides of the mounting plate and first side lugs perpendicularly connected to the ends, away from the mounting plate, of the supporting plates so as to form an n-shaped structure, and the opening end of the U-shaped iron yoke is connected to the mounting plate. The main loop assembly is connected to one of the U-shaped iron yoke and the support, and the connecting line of the electrified fasteners on the two sides is perpendicular to the connecting line of the two first side lugs. According to the invention, two original supports are combined into one support, the installation of the contactor can be completed through one support, and the connecting line of the two first side lugs for installation of the support is perpendicular to the connecting line of the two electrified fasteners, so that the support can adapt to the installation mode required by operators, and the cost of manufacturing the support can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric control device design, especially relates to a direct current contactor. BACKGROUND

[0002] Contactors are divided into AC contactors and DC contactors, which are applied to power, power distribution and power utilization. A contactor is an electric appliance that uses the magnetic field generated by the current flowing through the coil to close the contacts in industrial electricity to control the load. The DC contactor can frequently connect and disconnect the DC main circuit, has the characteristics of large control capacity, remote operation, etc., and is widely used in automatic control circuits.

[0003] The existing contactors shown in Figure 1 and Figure 2 When installing, two L-shaped supports 01 are first connected to the two sides of the U-shaped yoke 02 below the contactor, and then the other side of the L-shaped support 01 is fixedly installed at the predetermined position, and the two power supply fasteners 03 on the upper side of the contactor are connected to the corresponding copper plates. The connection between the two power supply fasteners 03 is parallel to the connection of the two fixing screws at the bottom of the contactor. In this way, when the two screw connection lines for fixing the L-shaped support 01 below the contactor are perpendicular to the two power supply fastener connection lines, the existing contactor cannot be installed. Moreover, the existing contactor needs to install two L-shaped supports 01 first, and then install the fixing screws on the L-shaped supports 01, which makes the installation more troublesome and increases the cost.

[0004] Therefore, how to provide a DC contactor to at least partially solve the above-mentioned drawbacks is a technical problem that needs to be solved by those skilled in the art at present. INVENTION CONTENTS

[0005] The utility model aims at providing a DC contactor which can reduce the parts required during installation and can also adapt to new installation requirements, that is, it can meet the installation when the power supply fastener connection line is perpendicular to the fixing screw connection line.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A DC contactor, comprising a main circuit assembly at the top, power supply fasteners on both sides of the main circuit assembly, and an electromagnet assembly below the main circuit assembly, comprising:

[0008] A U-shaped yoke is sleeved on the outer periphery of the electromagnet assembly;

[0009] A support comprises a mounting plate, support plates on both sides of the mounting plate, and a first side ear connected perpendicularly to the end of the support plate away from the mounting plate, forming a few character-shaped structure, and the open end of the U-shaped yoke is connected to the mounting plate.

[0010] The main circuit assembly is connected to one of the U-shaped iron yoke and the support, and the two side power fastener lines are perpendicular to the two first side ear lines.

[0011] Preferably, the open end of the U-shaped iron yoke is connected to the upper side of the mounting plate, and the end of the U-shaped iron yoke away from the open end is connected to the lower side of the main circuit assembly.

[0012] Preferably, the second side ears are arranged staggered on both sides of the end of the U-shaped iron yoke away from the open end, and the first connecting holes are arranged on the second side ears.

[0013] Preferably, the two first side ears are both semicylindrical structures, and the axis of one of the first side ears is provided with a second connecting hole, and the axis of the other first side ear is provided with a connecting slot.

[0014] Preferably, the two side plates of the U-shaped iron yoke are both provided with lead-out wire fixing holes.

[0015] Preferably, the open end of the U-shaped iron yoke is connected to the lower side of the mounting plate, the U-shaped iron yoke is arranged in the accommodating cavity between the two support plates, and the mounting plate is connected to the lower side of the main circuit assembly.

[0016] Preferably, the mounting plate is provided with third connecting holes, and the support is connected to the lower side of the main circuit assembly through the third connecting holes by fixing screws.

[0017] Preferably, the support plates are both T-shaped structures, and the two first side ears are both semicylindrical structures, and the axes of the two first side ears are both provided with second connecting holes.

[0018] Preferably, the two support plates are both provided with lead-out wire fixing holes.

[0019] Preferably, the mounting plate is provided with riveting holes, and the open end of the U-shaped iron yoke is riveted into the riveting holes of the mounting plate.

[0020] With respect to the above background technology, the DC contactor provided by the utility model comprises a main circuit assembly at the top, two power fasteners respectively at the two sides of the main circuit assembly, and an electromagnet assembly at the lower side of the main circuit assembly, and comprises a U-shaped iron yoke and a support; the U-shaped iron yoke is sleeved on the outer periphery of the electromagnet assembly; the support comprises a mounting plate, support plates at the two sides of the mounting plate, and first side ears vertically connected to the end of the support plates away from the mounting plate, so as to form a few-shaped structure, and the open end of the U-shaped iron yoke is connected to the mounting plate; the main circuit assembly is connected to one of the U-shaped iron yoke and the support, and the two side power fastener lines are perpendicular to the two first side ear lines.

[0021] Specifically, in this application, the original two brackets are combined into one bracket, and the DC contactor can be installed with one bracket. Moreover, the connection between the two first side ears of the bracket used for installation in this application is perpendicular to the connection between the two energized fasteners. This not only adapts to the installation method required by the operator, but also saves the cost of manufacturing the bracket. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a DC contactor structure in the prior art;

[0024] Figure 2 This is a schematic diagram of the installation structure of a DC contactor in the prior art;

[0025] Figure 3 This is a schematic diagram of the DC contactor structure provided in an embodiment of the present utility model;

[0026] Figure 4 for Figure 3 The main view;

[0027] Figure 5 for Figure 3 Side view;

[0028] Figure 6 for Figure 3 A view from bottom to top;

[0029] Figure 7 This is a schematic diagram of the electromagnet assembly structure provided in an embodiment of the present utility model;

[0030] Figure 8 This is a front view of another embodiment of the present utility model;

[0031] Figure 9 for Figure 8 Side view;

[0032] Figure 10 for Figure 8 Top view of the central support.

[0033] in:

[0034] 01-L-shaped bracket, 02-U-shaped yoke, 03-Electrified fastener, 04-Main circuit assembly, 05-Electromagnet assembly;

[0035] 100-U-shaped yoke, 110-second side lug, 120-first connecting hole, 130-riveting hole;

[0036] 200-Bracket, 210-Mounting plate, 211-Third connecting hole, 220-Support plate, 230-First side ear, 231-Second connecting hole, 232-Connecting groove;

[0037] 300 - Lead wire fixing hole. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] In the description of this utility model, it should be understood that the terms "upper", "lower", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0041] The purpose of this invention is to provide a DC contactor that can reduce the number of parts required during installation and can also adapt to new installation requirements, namely, it can meet the installation requirements when the wiring of the energized fastener is perpendicular to the wiring of the fixing screw.

[0042] To achieve the above objectives, the present invention provides the following technical solution:

[0043] Please see Figures 3 to 10, this embodiment provides a DC contactor, including a main circuit component at the top, two energized fasteners respectively located on both sides of the main circuit component, and an electromagnet component located on the lower side of the main circuit component, including: a U-shaped yoke 100 and a bracket 200; the U-shaped yoke 100 is sleeved on the outer periphery of the electromagnet component; the bracket 200 is in a "J" shape structure, including a mounting plate 210, support plates 220 on both sides of the mounting plate 210, and first side ears 231 vertically connected to the ends of the support plates 220 away from the mounting plate 210, and the open end of the U-shaped yoke 100 is connected to the mounting plate 210; the main circuit component is connected to one of the U-shaped yoke 100 and the bracket 200, and the line connecting the two energized fasteners is perpendicular to the line connecting the two first side ears 231.

[0044] Among them, the U-shaped yoke 100 can just be sleeved on the outer periphery of the electromagnet component, and the bracket 200 is in an overall "J" shape structure. Its top horizontal part is the mounting plate 210, the two vertical parts on both sides connected to the ends of the mounting plate 210 are the support plates 220, and the bottom ends of the support plates 220 are respectively connected with first side ears 231 towards the left and right sides. The first side ears 231 are also horizontally arranged, and the bracket 200 is an integral structure; therefore, in this embodiment, only one bracket 200 is needed during installation to achieve the expected fixing effect, and the open end of the U-shaped yoke 100 is connected to the mounting plate 210, that is, the two side plates of the U-shaped yoke 100 are perpendicular to the mounting plate 210; it should be noted that whether the main circuit component in this embodiment is connected to the U-shaped yoke 100 or to the mounting plate 210 of the bracket 200, the line connecting the two first side ears 231 needs to be perpendicular to the line connecting the two energized fasteners.

[0045] Specifically, in this application, the original two brackets 200 are combined into one bracket 200. The installation of the DC contactor can be completed through one bracket 200, and the line connecting the two first side ears 231 for installation on the bracket 200 in this application is perpendicular to the line connecting the two energized fasteners. This can not only adapt to the installation method required by the operator, but also save the cost of manufacturing the bracket 200.

[0046] In one embodiment, the open end of the U-shaped yoke 100 is connected to the upper side of the mounting plate 210, and the end of the U-shaped yoke 100 away from its open end is connected to the lower side of the main circuit component.

[0047] Specifically, as shown in the figure to Figure 6As shown, the two support plates 220 of the bracket 200 are relatively low, and the opening of the U-shaped yoke 100 is installed upside down on the upper side of the mounting plate 210 to ensure the fixation of the electromagnet assembly inside. Therefore, in this embodiment, the connection between the electromagnet assembly, the U-shaped yoke 100 and the bracket 200 and the main circuit assembly is through the bottom plate at the opening of the U-shaped yoke 100. That is, the end of the U-shaped yoke 100 that is away from the opening is installed to the lower side of the main circuit assembly by screws or other means.

[0048] Furthermore, the U-shaped iron yoke 100 has second side ears 110 staggered on both sides of the end opposite to the outlet end, and the second side ears 110 are provided with first connecting holes 120.

[0049] To facilitate the connection between the U-shaped yoke 100 and the main circuit assembly, a second side lug 110 is provided on each of the left and right sides of the top of the U-shaped yoke 100. A first connecting hole 120 is provided on the second side lug 110, through which screws can pass to connect the U-shaped yoke 100 to the main circuit assembly, as detailed below. Figure 7 As shown; it should also be noted that the two first side ears 231 are diagonally distributed. This arrangement can achieve a good fixed installation effect while reducing the number of steps and parts required for installation, and also reducing the manufacturing cost of the U-shaped iron yoke 100.

[0050] Based on the above embodiments, both first side ears 231 are semi-cylindrical structures, with a second connecting hole at the center of one and a connecting groove 232 at the center of the other.

[0051] like Figure 6 As shown, the cross-sections of both first side ears 231 from top to bottom are semi-circular, meaning that the first side ears 231 are generally semi-cylindrical structures. It should be noted that not both first side ears 231 are provided with through holes. To increase the convenience of bracket 200 installation, in this embodiment, one of the two first side ears 231 is provided with a circular second connecting hole at the axial position, while the other first side ear 231 is provided with an open connecting groove 232. Moreover, the extension direction of the connecting groove 232 coincides with the straight line formed by the two axial centers. In this way, even if there is an error in the gap between the two mounting screws, the bracket 200 can still be installed.

[0052] Preferably, both sides of the U-shaped yoke 100 are provided with lead wire fixing holes 300.

[0053] In this embodiment, two lead wire fixing holes 300 are respectively provided on the two side plates of the U-shaped yoke 100. These holes can be used to wind the lead wires of the electromagnet assembly and the lead wires of the micro switch located on the main circuit assembly, which makes the DC contactor more aesthetically pleasing.

[0054] In another embodiment, the open end of the U-shaped yoke 100 is connected to the lower side of the mounting plate 210, the U-shaped yoke 100 is located in the receiving cavity between the two support plates 220, and the mounting plate 210 is connected to the lower side of the main circuit assembly.

[0055] Specifically, such as Figures 8 to 10 As shown, the two support plates 220 of the bracket 200 are higher, while the open end of the U-shaped yoke 100 is directly connected to the lower side of the mounting plate 210. At this time, the electromagnet assembly will be located in the receiving cavity formed by the two support plates 220. In this way, the whole formed by the electromagnet assembly, the U-shaped yoke 100 and the bracket 200 will be connected to the main circuit assembly through the mounting plate 210. Of course, the connection method can be selected according to the actual situation.

[0056] Furthermore, the mounting plate 210 is provided with several third connection holes 211, and the bracket 200 is connected to the lower side of the main circuit assembly by fixing screws passing through the third connection holes 211.

[0057] To facilitate the connection between the bracket 200 and the main circuit assembly, multiple third connection holes 211 are provided on the mounting plate 210, as shown in the figure below. Figure 10 As shown, the bracket 200 can be installed by inserting screws through the third connecting hole 211, which makes installation and disassembly very convenient.

[0058] Furthermore, the support plate 220 has an overall T-shaped structure, and the two first side ears 231 are both semi-cylindrical structures, with a second connecting hole provided at the axis of each of the two first side ears 231.

[0059] To enhance the overall strength of the bracket 200, the two support plates 220 in this embodiment are T-shaped, which strengthens the support for the mounting plate 210. In addition, each of the first side ears 231 on the outer side of the two support plates 220 is provided with a second connecting hole, through which screws can be inserted to fix the bracket 200.

[0060] Based on the above embodiment, the dimensions of the two support plates 220 in the height direction are larger than the dimensions of the U-shaped iron yoke 100 in the height direction, and the middle of both support plates 220 is provided with lead wire fixing holes 300.

[0061] Understandably, in order for the U-shaped yoke 100 and the electromagnet assembly to be installed in the cavity formed between the two support plates 220, the height of the support plate 220 needs to be greater than the height of the U-shaped yoke 100. Similarly, in order to facilitate wire winding, a lead wire fixing hole 300 is provided in the middle of the support plate 220.

[0062] Based on the above two embodiments, the mounting plate 210 is provided with a first connecting hole 130, and the open end of the U-shaped yoke 100 is riveted to the first connecting hole 130 on the mounting plate 210.

[0063] Specifically, such as Figure 6 and Figure 10 As shown, the U-shaped yokes 100 are all riveted to the mounting plate 210. The mounting plate 210 is provided with a first connecting hole 130 corresponding to the open end of the U-shaped yoke 100, and the open end of the U-shaped yoke 100 is provided with a corresponding plug. Regardless of whether the U-shaped yoke 100 is installed on the upper side or the lower side of the mounting plate 210, the plug at its open end is inserted into the first connecting hole 130 for riveting. Of course, the U-shaped yoke 100 can also be connected to the mounting plate 210 in other ways, such as welding, which is not specifically limited in this article.

[0064] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A DC contactor, comprising a main circuit assembly (04) located at the top, energized fasteners (03) located on both sides of the main circuit assembly (04), and an electromagnet assembly (05) located on the lower side of the main circuit assembly (04), characterized in that, include: A U-shaped iron yoke (100) is fitted around the outer periphery of the electromagnet assembly (05); The bracket (200) includes a mounting plate (210), support plates (220) located on both sides of the mounting plate (210), and a first side ear (230) vertically connected to the support plate (220) away from the end of the mounting plate (210) in a Z-shaped structure, and the open end of the U-shaped yoke (100) is connected to the mounting plate (210). The main circuit assembly (04) is connected to either the U-shaped yoke (100) or the bracket (200), and the line connecting the two energized fasteners (03) is perpendicular to the line connecting the two first side ears (230).

2. The DC contactor according to claim 1, characterized in that, The open end of the U-shaped yoke (100) is connected to the upper side of the mounting plate (210), and the end of the U-shaped yoke (100) opposite to its open end is connected to the lower side of the main circuit assembly (04).

3. The DC contactor according to claim 2, characterized in that, The U-shaped yoke (100) has second side ears (110) staggered on both sides of the end opposite to the opening end, and the second side ears (110) are provided with first connecting holes (120).

4. The DC contactor according to claim 3, characterized in that, Both first side ears (230) are semi-cylindrical in shape, with a second connecting hole (231) at the center of one and a connecting groove (232) at the center of the other.

5. The DC contactor according to claim 4, characterized in that, Both sides of the U-shaped yoke (100) are provided with lead wire fixing holes (300).

6. The DC contactor according to claim 1, characterized in that, The open end of the U-shaped yoke (100) is connected to the lower side of the mounting plate (210), the U-shaped yoke (100) is located in the receiving cavity between the two support plates (220), and the mounting plate (210) is connected to the lower side of the main circuit assembly (04).

7. The DC contactor according to claim 6, characterized in that, The mounting plate (210) is provided with a plurality of third connection holes (211), and the bracket (200) is connected to the lower side of the main circuit assembly (04) by means of fixing screws passing through the third connection holes (211).

8. The DC contactor according to claim 7, characterized in that, The support plate (220) has a T-shaped structure, and the two first side ears (230) are semi-cylindrical structures. A second connecting hole (231) is provided at the axis of each of the two first side ears (230).

9. The DC contactor according to claim 8, characterized in that, The dimensions of the two support plates (220) in the height direction are larger than those of the U-shaped iron yoke (100) in the height direction, and the middle of the two support plates (220) is provided with lead wire fixing holes (300).

10. The DC contactor according to claim 2 or 6, characterized in that, The mounting plate (210) is provided with a riveting hole (130), and the open end of the U-shaped yoke (100) is riveted to the riveting hole (130) on the mounting plate (210).

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