Contactor

Abstract

The utility model relates to a contactor, and relates to the technical field of control electric appliances, the contactor comprises a shell and a control structure located in the shell, the shell comprises a base, a middle seat installed on the base, and an upper cover fixed on the middle seat; a mounting notch is formed in one side of the base, an adjusting plate used for blocking the mounting notch is detachably mounted on the side face of the base, and a mounting through hole for a wiring board to penetrate through is formed in the adjusting plate; due to the cooperative arrangement of the mounting through hole and the adjusting plate, when the wiring board and the electromagnetic assembly are mounted, a user can take down the adjusting plate and splice the adjusting plate with the wiring board independently, then the adjusting plate, the wiring board and the electromagnetic assembly are integrally mounted on the base, and finally, the adjusting plate is fixed on the base, so that the corresponding mounting time is shortened, and the mounting efficiency is improved. And the corresponding installation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of controlling electrical appliances, and in particular to a contactor. Background Art

[0002] AC contactors, as core components in the field of electrical control, are widely used in electric traction and automation control systems. Based on the electromagnetic principle, they precisely control the opening and closing of contacts by turning the coil on and off, thus achieving efficient on-off management of the circuit. AC contactors have played an important role in the field of modern electrical control with their advantages such as large-capacity control, remote control convenience, timing operation function, high reliability, long life and low cost.

[0003] In the prior art, a typical AC contactor design includes a housing and an internal precision control structure. The housing is assembled by stacking a base, a middle base and an upper cover to provide protection for the internal components. The control structure integrates electromagnetic components (including electromagnetic coils, static iron cores and moving iron cores), contact components (main contacts and auxiliary contacts) and efficient arc extinguishing components. The latter uses a variety of advanced arc extinguishing technologies such as double-break electric, longitudinal slits or grids to ensure that the arc is extinguished quickly and reduce energy loss.

[0004] During the installation of the internal control structure, some require the corresponding structure to be installed inside the base, and some require the terminal block to pass through the side wall of the base and extend to the outside of the shell. However, some designs pre-fix the terminal block and the electromagnetic assembly, resulting in the need to separate the two first during actual installation so that the terminal block can be led through the side wall of the base to the outside and then re-fixed to the electromagnetic assembly after completion. This process is not only cumbersome and time-consuming, but also increases the risk of installation errors, and there is obviously room for improvement. Utility Model Content

[0005] The purpose of the present application is to provide a contactor to solve the problem in the above-mentioned related art that the assembly of the wiring board and the electromagnetic assembly takes too long.

[0006] The contactor provided in this application adopts the following technical solution:

[0007] A contactor comprises a shell and a control structure located in the shell, wherein the shell comprises a base, a middle base mounted on the base, and an upper cover fixed on the middle base; a mounting notch is provided on one side of the base, an adjustment plate for blocking the mounting notch is detachably mounted on the side of the base, and a mounting through hole is provided on the adjustment plate for a wiring board to pass through.

[0008] By adopting the above technical solution, when installing the terminal block and the electromagnetic assembly, due to the matching arrangement of the mounting through hole and the adjustment plate, the user can remove the adjustment plate and splice it with the terminal block separately, and then install the adjustment plate, the terminal block and the electromagnetic assembly as a whole on the base, and finally fix the adjustment plate on the base, thereby reducing the corresponding installation time and improving the corresponding installation efficiency.

[0009] Optionally, the base is provided with a recessed groove on the outer opening edge of the mounting notch for the adjustment plate to be placed in, the adjustment plate is provided with a locking through hole for the screw to pass through, and the bottom side of the recessed groove is provided with a locking screw hole that can overlap with the locking through hole and for the screw to be screwed in.

[0010] By adopting the above technical scheme, due to the provision of the yielding groove, the locking through hole and the locking screw hole, the user can place the adjustment plate inside the yielding groove, and at the same time make the locking through hole and the locking screw hole coincide with each other, and then pass the corresponding screw through the locking screw hole and screw it into the locking screw hole, so as to achieve the installation and fixation of the adjustment plate; the installed adjustment plate can be initially limited by the yielding groove, thereby improving the installation stability of the adjustment plate.

[0011] Optionally, a guiding slope is provided on the opening edge of the locking through hole facing outwards.

[0012] By adopting the above technical solution, due to the setting of the guiding bevel, when the screw is used to pass through the locking through hole and screwed into the locking screw hole, the screw can be inserted into the corresponding locking through hole along the guiding bevel, thereby improving the fixing efficiency of the adjustment plate.

[0013] Optionally, a positioning strip is fixedly provided on the side of the adjustment plate away from the middle seat, and a positioning slot for inserting the positioning strip is provided on the base.

[0014] By adopting the above technical solution, when the locking through hole and the locking screw hole on the adjustment plate coincide with each other, due to the matching setting of the positioning strip and the positioning slot, the positioning strip is inserted into the corresponding positioning slot, thereby further limiting the adjustment plate and improving the stability of the adjustment plate after installation.

[0015] Optionally, a guide arc surface is fixedly provided on the side edge of the positioning clip away from the adjustment plate.

[0016] By adopting the above technical solution, due to the provision of the guide arc surface, it is convenient for the positioning card strip to be inserted into the corresponding positioning card slot along the guide arc surface.

[0017] Optionally, a protective sleeve is fixedly provided on the outer edge of the mounting through hole of the adjustment plate, and the protective sleeve is sleeved on the outer periphery of the wiring board extending to the outside.

[0018] By adopting the above technical solution, the part of the terminal block extending to the outside is protected, thereby reducing the possibility of danger caused by accidental touch by unintentional persons.

[0019] Optionally, a plurality of fixing ears are fixedly provided on the bottom side of the base away from the middle seat, and fixing through holes are provided on the fixing ears.

[0020] By adopting the above technical solution, when the contactor is fixed on a certain installation surface, the screw is passed through the fixing through hole and then threadedly fixed on the surface to be installed, so that the contactor can be quickly installed and fixed, thereby facilitating the subsequent installation and fixation of the contactor.

[0021] Optionally, a supporting protrusion is fixedly provided on the bottom side of the fixing ear.

[0022] By adopting the above technical solution, the gap between the housing and the surface to be installed can be increased. When the surface to be installed is in a humid area, the support protrusion is used to raise the height of the contactor when it is installed and fixed, which can reduce the impact of moisture or water on the surface to be installed on the contactor.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Due to the coordinated setting of the mounting through hole and the adjustment plate, when installing the terminal block and the electromagnetic assembly, the user can remove the adjustment plate and splice it with the terminal block alone, and then install the adjustment plate, the terminal block and the electromagnetic assembly as a whole on the base, and finally fix the adjustment plate on the base, thereby reducing the corresponding installation time and improving the corresponding installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 is a schematic diagram of the explosion structure of an embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of the structure of the base and the fixing ears installed in the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the structure of the installation distribution of the adjustment plate and the base in the embodiment of the present application;

[0030] Figure 5It is a partial cross-sectional structural schematic diagram of the installation and matching of the adjustment plate and the base in the embodiment of the present application;

[0031] Figure 6 It is a schematic diagram of a partial cross-sectional structure showing the distribution of locking through holes and locking screw holes according to an embodiment of the present application.

[0032] In the figure, 1, base; 11, fixing ear; 111, fixing through hole; 112, supporting protrusion; 12, installation notch; 13, recessed groove; 131, locking screw hole; 14, positioning slot; 2, middle seat; 3, upper cover; 4, electromagnetic assembly; 5, electric shock assembly; 6, arc extinguishing assembly; 7, adjustment plate; 71, installation through hole; 72, protective sleeve; 73, locking through hole; 731, guide slope; 74, positioning card strip; 741, guide arc surface. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0034] Example:

[0035] Reference Figure 1 and Figure 2 A contactor includes a shell and a control structure located in the shell, the shell includes a base 1, a middle base 2 installed on the base 1, and an upper cover 3 fixed on the middle base 2; wherein the base 1, the middle base 2 and the upper cover 3 are fixedly connected by screws, which is a conventional fixing method and will not be repeated here.

[0036] The control structure includes an electromagnetic assembly 4, a contact assembly and an arc extinguishing assembly 6; the electromagnetic assembly 4 includes an electromagnetic coil, a static iron core and a moving iron core, the contact assembly includes a main contact and an auxiliary contact, and the arc extinguishing assembly 6 usually adopts a grid arc extinguishing method, which are all conventional internal structures of control electrical appliances and are not described here. When the electromagnetic coil is energized, an electromagnetic force is generated to attract the moving iron core to move toward the static iron core, thereby driving the contact assembly to move.

[0037] Reference Figure 2 and Figure 3 Four fixing ears 11 are integrally formed on the bottom side of the base 1 away from the middle base 2, and fixing through holes 111 are opened on the fixing ears 11; when the contactor is fixed on a certain installation surface, the screws are passed through the fixing through holes 111 and then threadedly fixed on the installation surface, so that the contactor can be quickly installed and fixed.

[0038] A supporting protrusion 112 is integrally formed on the bottom side of the fixing ear 11, and is used to raise the height of the contactor when it is installed and fixed, increase the gap between the shell and the surface to be installed, and when the surface to be installed is in a humid area, reduce the impact of moisture or water on the surface to be installed on the contactor.

[0039] Reference Figure 4 and Figure 5 A mounting notch 12 is provided on one side of the base 1, and an adjusting plate 7 for blocking the mounting notch 12 is detachably installed on the side of the base 1, and two mounting through holes 71 for the wiring board to pass through are provided on the adjusting plate 7; when the wiring board and the electromagnetic assembly 4 are installed, the user can remove the adjusting plate 7 and splice it with the wiring board alone, and then assemble the adjusting plate 7, the wiring board and the electromagnetic assembly 4 (see Figure 2 ) is installed as a whole on the base 1, and finally the adjustment plate 7 is fixed on the base 1.

[0040] Reference Figure 5 The regulating plate 7 is integrally formed with a protective sleeve 72 on the outer edge of the mounting through hole 71. The protective sleeve 72 is sleeved on the outer periphery of the terminal block extending to the outside, so as to protect the portion of the terminal block extending to the outside and reduce the possibility of danger caused by accidental touch by unauthorized persons.

[0041] Reference Figure 5 and Figure 6 The base 1 is provided with a recessed groove 13 for the adjustment plate 7 to be placed on the outer opening edge of the installation notch 12, and the adjustment plate 7 is provided with two locking through holes 73 for screws to pass through, wherein the bottom side of the recessed groove 13 is provided with a locking screw hole 131 that can overlap with the locking through hole 73 and for screws (not shown in the figure) to be screwed in, and a guiding inclined surface 731 is provided on the opening edge of the locking through hole 73 facing the outside;

[0042] The user first places the adjustment plate 7 inside the recess 13 so that the locking through hole 73 and the locking screw hole 131 coincide with each other, and then passes the corresponding screw through the locking screw hole 131 along the guiding slope 731 and then screws it into the locking screw hole 131, thereby achieving the installation and fixation of the adjustment plate 7.

[0043] Reference Figure 5 and Figure 6 A positioning strip 74 is integrally formed on the side of the adjustment plate 7 away from the middle seat 2, and a guide arc surface 741 is fixedly provided on the side edge of the positioning strip 74 away from the adjustment plate 7, and a positioning slot 14 for inserting the positioning strip 74 is opened on the base 1; with this arrangement, when the locking through hole 73 and the locking screw hole 131 on the adjustment plate 7 coincide with each other, the positioning strip 74 is inserted into the corresponding positioning slot 14, so as to further limit the adjustment plate 7 and improve the stability of the adjustment plate 7 after installation.

[0044] The implementation principle of the embodiment of the present application is:

[0045] When installing the terminal block and the electromagnetic assembly 4, the user can remove the adjustment plate 7 and splice it with the terminal block separately, and then install the adjustment plate 7, the terminal block and the electromagnetic assembly 4 as a whole on the base 1, so that the adjustment plate 7 is placed inside the yielding groove 13, and the positioning strip 74 is inserted into the corresponding positioning groove 14, the locking through hole 73 and the locking screw hole 131 overlap, and finally the corresponding screw is passed through the locking screw hole 131 along the guide bevel 731 and then screwed into the locking screw hole 131, so as to achieve the installation and fixation of the adjustment plate 7.

[0046] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A contactor, comprising a housing and a control structure located in the housing, wherein the housing comprises a base (1), a middle base (2) mounted on the base (1), and an upper cover (3) fixed on the middle base (2); It is characterized in that A mounting notch (12) is provided on one side of the base (1), an adjustment plate (7) for blocking the mounting notch (12) is detachably mounted on the side of the base (1), and a mounting through hole (71) for a wiring board to pass through is provided on the adjustment plate (7).

2. A contactor according to claim 1, characterized in that: The base (1) is provided with a recessed groove (13) on the outer opening edge of the mounting notch (12) for the adjustment plate (7) to be placed therein, the adjustment plate (7) is provided with a locking through hole (73) for the screw to pass through, and the bottom side of the recessed groove (13) is provided with a locking screw hole (131) which can overlap with the locking through hole (73) and for the screw to be screwed into.

3. A contactor according to claim 2, characterized in that: A guiding inclined surface (731) is provided on the opening edge of the locking through hole (73) facing the outside.

4. A contactor according to claim 1, characterized in that: A positioning clip (74) is fixedly provided on the side of the adjustment plate (7) away from the middle seat (2), and a positioning clip groove (14) for inserting the positioning clip (74) is provided on the base (1).

5. A contactor according to claim 4, characterized in that: A guide arc surface (741) is fixedly provided on the side edge of the positioning clip (74) away from the adjustment plate (7).

6. A contactor according to claim 1, characterized in that: The adjustment plate (7) is fixedly provided with a protective sleeve (72) on the outer edge of the mounting through hole (71), and the protective sleeve (72) is sleeved on the outer periphery of the wiring board extending to the outside.

7. A contactor according to claim 1, characterized in that: A plurality of fixing ears (11) are fixedly arranged on the bottom side of the base (1) away from the middle seat (2), and fixing through holes (111) are provided on the fixing ears (11).

8. A contactor according to claim 7, characterized in that: A supporting protrusion (112) is fixedly provided on the bottom side of the fixing ear (11).

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