CN219778716U - Terminal fixing structure of micro switch - Google Patents

Abstract

A terminal fixing structure of a micro switch is characterized in that a mounting groove is formed at the upper end of a stop block body, a mounting through hole is formed in the center of an adapter plate frame, the adapter plate frame is clamped at the mounting groove through the mounting through hole, a first terminal interface is formed at one end of the adapter plate frame, and a second terminal interface is formed at the other end of the adapter plate frame; the micro-switch body is arranged below the adapter plate frame and is provided with a plurality of leading-out terminals which are inserted into the first terminal interface; the auxiliary terminal elastic sheet is connected to the second terminal interface, and the external terminal is connected with the auxiliary terminal elastic sheet; the first terminal interface and the second terminal interface are electrically connected through a conductor, and the lead-out terminal is electrically connected with the external terminal through the first terminal interface, the conductor, the second terminal interface and the auxiliary terminal elastic sheet. According to the utility model, after the micro switch body and the stop block body are assembled, the micro switch body and the stop block body are fixed and limited in the three-dimensional direction, so that tin balls are not easy to leave in the inner cavity of the ceramic, the pollution to the inside of the ceramic is reduced, and the reliability of the contactor is improved.

Description

Terminal fixing structure of micro switch

Technical Field

The utility model relates to a terminal fixing structure of a micro switch, and belongs to the technical field of contactors.

Background

The contactor is a device capable of rapidly cutting off an alternating current and direct current main loop and frequently switching on and off a large current control (up to 800A) circuit, is often applied to a motor as a control object, and can also be used for controlling electric loads such as factory equipment, an electric heater, a working master machine, various electric power units and the like, and the contactor not only can switch on and off the circuit, but also has a low-voltage release protection effect.

Currently, in some types of contactors, a micro switch is used to perform an on signal, but the micro switch is fixed to the contactor by soldering. The technical scheme has the defects that when the micro switch is soldered, the micro switch is easy to topple over and cannot be soldered and fixed rapidly, and meanwhile, when the ceramic inner cavity is soldered, tin balls are easily left in the ceramic inner cavity, so that the working performance of the contactor is reduced.

Disclosure of Invention

The utility model aims to provide a terminal fixing structure of a micro switch, which solves the problem of poor working reliability of a traditional contactor.

The technical scheme for solving the technical problems is as follows: a terminal fixing structure of a micro switch comprises a stop block body, a transfer plate frame, a micro switch body, an auxiliary terminal spring piece and an external terminal;

the upper end of the stop block body is provided with a mounting groove, the center of the transfer plate frame is provided with a mounting through hole, the transfer plate frame is clamped at the mounting groove through the mounting through hole, one end of the transfer plate frame is provided with a first terminal interface, and the other end of the transfer plate frame is provided with a second terminal interface;

the micro-switch body is arranged below the adapter plate frame and is provided with a plurality of leading-out terminals, and the leading-out terminals are inserted into the first terminal interface; the auxiliary terminal elastic sheet is connected to the second terminal interface, and the external terminal is connected with the auxiliary terminal elastic sheet;

the first terminal interface is electrically connected with the second terminal interface through a conductor, and the lead-out terminal is electrically connected with the external terminal through the first terminal interface, the conductor, the second terminal interface and the auxiliary terminal elastic sheet.

As the terminal fixing structure optimization scheme of the micro-switch, the transfer plate frame adopts a PCBA circuit board, and the conductor is integrated on the PCBA circuit board.

As a preferable mode of the terminal fixing structure of the micro switch, a bulge is arranged in the center of the mounting groove, and the bulge is inserted into the mounting through hole.

As a terminal fixing structure preferable scheme of the micro switch, a fixing hole is formed at one end of the transfer plate frame close to the second terminal interface, a fixing column is arranged at the position of the mounting groove corresponding to the fixing hole, and the fixing column is inserted into the fixing hole.

As a terminal fixing structure preferable scheme of the micro switch, an embedding head is formed at the bottom of the auxiliary terminal elastic sheet and extends into the second terminal interface.

As the terminal fixing structure optimization scheme of the micro-switch, the auxiliary terminal elastic sheet is U-shaped, a bayonet is formed on the auxiliary terminal elastic sheet, and the external terminal is inserted into the bayonet.

The utility model has the beneficial effects that the utility model is provided with a stop block body, a transfer plate frame, a micro switch body, an auxiliary terminal spring plate and an external terminal; the upper end of the stop block body is provided with a mounting groove, the center of the transfer plate frame is provided with a mounting through hole, the transfer plate frame is clamped at the mounting groove through the mounting through hole, one end of the transfer plate frame is provided with a first terminal interface, and the other end of the transfer plate frame is provided with a second terminal interface; the micro-switch body is arranged below the adapter plate frame and is provided with a plurality of leading-out terminals which are inserted into the first terminal interface; the auxiliary terminal elastic sheet is connected to the second terminal interface, and the external terminal is connected with the auxiliary terminal elastic sheet; the first terminal interface and the second terminal interface are electrically connected through a conductor, and the lead-out terminal is electrically connected with the external terminal through the first terminal interface, the conductor, the second terminal interface and the auxiliary terminal elastic sheet. According to the utility model, after the micro switch body and the stop block body are assembled, the micro switch body and the stop block body are fixed and limited in the three-dimensional direction, tin balls are not easy to leave in the inner cavity of the ceramic, the pollution to the inside of the ceramic is reduced, meanwhile, the auxiliary terminal spring plate is used for connecting the micro switch body, the loop resistance of the micro switch body is reduced, the creepage distance between the contact and the micro switch body is increased, and the reliability of the contactor is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the scope of the utility model.

Fig. 1 is a schematic diagram of a terminal fixing structure of a micro switch according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a block body in a terminal fixing structure of a micro switch according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a combination of a transfer board frame, a micro switch body, an auxiliary terminal spring and an external terminal in a terminal fixing structure of a micro switch according to an embodiment of the present utility model;

fig. 4 is a schematic view of a terminal fixing structure of a micro switch according to an embodiment of the present utility model.

In the figure, 1, a stop block body; 2. a transfer plate frame; 3. a micro-switch body; 4. an auxiliary terminal spring plate; 5. an external terminal; 6. a mounting groove; 7. mounting through holes; 8. a first terminal interface; 9. a second terminal interface; 10. a lead-out terminal; 11. a conductor; 12. a protrusion; 13. a fixing hole; 14. fixing the column; 15. an embedding head; 16. a bayonet.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

It should be noted that, in this embodiment, the contactor structure inside the stopper body (illustrated in fig. 1) belongs to the existing technology, which is not the focus of the technical proposal, and a contactor with a moving plate arc extinguishing structure is disclosed in the related art, which is provided with a base, a cover body, a static binding post, a core rod assembly, a fixing piece, a lower yoke iron frame, a moving contact plate and a spring body; the base is connected with the cover body, a wiring hole is formed at the top of the cover body, and the static binding post is connected with the wiring hole; the static binding post is matched with the movable contact piece; the core rod assembly is positioned in the cover body and comprises a movable contact bracket, an insulating bush and a core rod body, a mounting hole is formed in the side part of the movable contact bracket, the end part of the fixing sheet is connected with the mounting hole, the insulating bush is connected to the bottom of the movable contact bracket, and a spring clamping groove is formed in the upper part of the insulating bush; the core rod body is connected below the insulating bush and extends out to the lower part of the base; the lower yoke frame is arranged below the fixing sheet, the movable contact sheet is positioned in the lower yoke frame, and arc extinguishing grooves which are symmetrical to each other are formed on the upper surface of the movable contact sheet; the upper end of the spring body contacts the bottom of the lower yoke iron frame, and the lower end of the spring body is positioned in the spring clamping groove. When the movable contact head and the static wiring post of the contactor are carried and cut off, the bottom surfaces of the movable contact head and the static wiring post of the movable contact piece are changed into a cutting off state from a contact state, and an arc is generated due to cutting off, and an arc extinguishing space is increased due to the concave design of the arc extinguishing groove, so that the arc has an elongated space, and can be extinguished rapidly. When the lower extreme of spring body passes through the bottom of contact spring draw-in groove, spacing protruding through-hole at spring body center, and then make the lower extreme of spring body more stable through spacing protruding.

On the basis of the related technology of the contactor, referring to fig. 1, 2, 3 and 4, the embodiment of the utility model provides a terminal fixing structure of a micro switch, which comprises a stop block body 1, a transfer plate frame 2, a micro switch body 3, an auxiliary terminal spring plate 4 and an external terminal 5;

wherein, the upper end of the block body 1 is formed with a mounting groove 6, the center of the adapter plate frame 2 is provided with a mounting through hole 7, the adapter plate frame 2 is clamped at the mounting groove 6 through the mounting through hole 7, one end of the adapter plate frame 2 is formed with a first terminal interface 8, and the other end of the adapter plate frame 2 is formed with a second terminal interface 9;

the micro-switch body 3 is arranged below the adapter plate frame 2, the micro-switch body 3 is provided with a plurality of leading-out terminals 10, and the leading-out terminals 10 are inserted into the first terminal interface 8; the auxiliary terminal elastic sheet 4 is connected to the second terminal interface 9, and the external terminal 5 is connected with the auxiliary terminal elastic sheet 4;

the first terminal interface 8 and the second terminal interface 9 are electrically connected through a conductor 11, and the lead-out terminal 10 is electrically connected to the external terminal 5 through the first terminal interface 8, the conductor 11, the second terminal interface 9 and the auxiliary terminal spring piece 4.

In this embodiment, the adapter board frame 2 adopts a PCBA circuit board, and the conductor 11 is integrated on the PCBA circuit board; the center of the mounting groove 6 is provided with a bulge 12, the bulge 12 is inserted into the mounting through hole 7, one end of the adapter plate frame 2 close to the second terminal interface 9 is provided with a fixing hole 13, the mounting groove 6 is provided with a fixing column 14 corresponding to the fixing hole 13, and the fixing column 14 is inserted into the fixing hole 13. The bottom of the auxiliary terminal spring plate 4 is formed with an embedding head 15, and the embedding head 15 extends into the second terminal interface 9. The auxiliary terminal spring 4 is U-shaped, the auxiliary terminal spring 4 is provided with a bayonet 16, and the external terminal 5 is inserted into the bayonet 16.

Specifically, the adapter plate frame 2 is clamped in the mounting groove 6 at the upper end of the stop block body 1 through the mounting through hole 7, meanwhile, the embedding head 15 is matched with the second terminal interface 9, soldering and fixing are simultaneously carried out after assembly, limiting on the direction of the adapter plate frame 2X, Y can be achieved, after the fixing column 14 is matched with the fixing hole 13, thermal welding deformation is carried out on the fixing column 14, and limiting on the Z direction of the adapter plate frame 2 can be achieved. In addition, after the lead-out terminal 10 is inserted into the first terminal interface 8, soldering is performed, and at the same time, X, Y, Z shaft fixing of the micro switch body 3 is completed, and the external terminal 5 is inserted into the U-shaped bayonet 16 of the auxiliary terminal spring plate 4, and the lead-out terminal 10 connected with the first terminal interface 8 is conducted through the conductor 11. The micro-gap switch body 3 and the stop block body 1 are integrally fixed and limited in the XYZ three-dimensional direction after being assembled, tin balls are not easy to leave in the inner cavity of the ceramic, pollution to the inside of the ceramic is reduced, meanwhile, the micro-gap switch body 3 and the external terminal 5 are connected through the auxiliary terminal elastic sheet 4, the resistance of the micro-gap switch body 3 is reduced, the creepage distance between a contact and the micro-gap switch body 3 is increased, and the reliability of a contactor is improved.

In summary, the utility model is provided with a stop block body 1, an adapter plate frame 2, a micro switch body 3, an auxiliary terminal spring plate 4 and an external terminal 5; the upper end of the stop block body 1 is provided with a mounting groove 6, the center of the adapter plate frame 2 is provided with a mounting through hole 7, the adapter plate frame 2 is clamped at the mounting groove 6 through the mounting through hole 7, one end of the adapter plate frame 2 is provided with a first terminal interface 8, and the other end of the adapter plate frame 2 is provided with a second terminal interface 9; the micro-switch body 3 is arranged below the adapter plate frame 2, the micro-switch body 3 is provided with a plurality of leading-out terminals 10, and the leading-out terminals 10 are inserted into the first terminal interface 8; the auxiliary terminal elastic sheet 4 is connected to the second terminal interface 9, and the external terminal 5 is connected with the auxiliary terminal elastic sheet 4; the first terminal interface 8 and the second terminal interface 9 are electrically connected through a conductor 11, and the lead-out terminal 10 is electrically connected to the external terminal 5 through the first terminal interface 8, the conductor 11, the second terminal interface 9 and the auxiliary terminal spring piece 4. The adapter plate frame 2 is clamped in the mounting groove 6 at the upper end of the stop block body 1 through the mounting through hole 7, meanwhile, the embedded head 15 is matched with the second terminal interface 9, soldering and fixing are carried out simultaneously after assembly, limiting on the direction of the adapter plate frame 2X, Y can be achieved, after the fixing column 14 is matched with the fixing hole 13, thermal welding deformation is carried out on the fixing column 14, and limiting on the direction of the adapter plate frame 2Z can be achieved. In addition, after the lead-out terminal 10 is inserted into the first terminal interface 8, soldering is performed, and at the same time, X, Y, Z shaft fixing of the micro switch body 3 is completed, and the external terminal 5 is inserted into the U-shaped bayonet 16 of the auxiliary terminal spring plate 4, and the lead-out terminal 10 connected with the first terminal interface 8 is conducted through the conductor 11. The micro-gap switch body 3 and the stop block body 1 are integrally fixed and limited in the XYZ three-dimensional direction after being assembled, tin balls are not easy to leave in the inner cavity of the ceramic, pollution to the inside of the ceramic is reduced, meanwhile, the micro-gap switch body 3 and the external terminal 5 are connected through the auxiliary terminal elastic sheet 4, the resistance of the micro-gap switch body 3 is reduced, the creepage distance between a contact and the micro-gap switch body 3 is increased, and the reliability of a contactor is improved. According to the utility model, after the micro switch body 3 and the stop block body 1 are assembled, the micro switch body 3 is fixed and limited in the three-dimensional direction, tin balls are not easy to leave in the inner cavity of the ceramic, the pollution to the inside of the ceramic is reduced, meanwhile, the auxiliary terminal spring plate 4 is used for connecting the micro switch body 3, the loop resistance of the micro switch body 3 is reduced, the creepage distance between a contact and the micro switch body 3 is increased, and the reliability of a contactor is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (6)

1. The terminal fixing structure of the micro switch is characterized by comprising a stop block body (1), an adapter plate frame (2), a micro switch body (3), an auxiliary terminal elastic sheet (4) and an external terminal (5);

the novel connector is characterized in that a mounting groove (6) is formed in the upper end of the stop block body (1), a mounting through hole (7) is formed in the center of the adapter plate frame (2), the adapter plate frame (2) is clamped at the mounting groove (6) through the mounting through hole (7), a first terminal interface (8) is formed at one end of the adapter plate frame (2), and a second terminal interface (9) is formed at the other end of the adapter plate frame (2);

the micro-switch body (3) is arranged below the adapter plate frame (2), the micro-switch body (3) is provided with a plurality of leading-out terminals (10), and the leading-out terminals (10) are inserted into the first terminal interface (8); the auxiliary terminal elastic piece (4) is connected to the second terminal interface (9), and the external terminal (5) is connected with the auxiliary terminal elastic piece (4);

the first terminal interface (8) and the second terminal interface (9) are electrically connected through a conductor (11), and the lead-out terminal (10) is electrically connected with the external terminal (5) through the first terminal interface (8), the conductor (11), the second terminal interface (9) and the auxiliary terminal elastic sheet (4).

2. The terminal fixing structure of the micro switch according to claim 1, wherein the adapter plate frame (2) adopts a PCBA circuit board, and the conductor (11) is integrated on the PCBA circuit board.

3. A terminal fixing structure of a micro switch according to claim 2, characterized in that the center of the mounting groove (6) is provided with a protrusion (12), and the protrusion (12) is inserted into the mounting through hole (7).

4. A terminal fixing structure of a micro switch according to claim 3, wherein a fixing hole (13) is formed at one end of the adapter plate frame (2) near the second terminal interface (9), a fixing column (14) is arranged at a position of the mounting groove (6) corresponding to the fixing hole (13), and the fixing column (14) is inserted into the fixing hole (13).

5. The terminal fixing structure of a micro switch according to claim 4, wherein an embedding head (15) is formed at the bottom of the auxiliary terminal spring piece (4), and the embedding head (15) extends into the second terminal interface (9).

6. The terminal fixing structure of a micro switch according to claim 5, wherein the auxiliary terminal spring piece (4) is U-shaped, the auxiliary terminal spring piece (4) is formed with a bayonet (16), and the external terminal (5) is inserted into the bayonet (16).