CN219017540U - Contactor plug-in terminal structure capable of ensuring reliable connection - Google Patents

Abstract

The utility model discloses a contactor plug-in terminal structure for ensuring reliable connection, which is used for realizing the electrical connection between a coil of a contactor and an external power supply, and comprises the following components: the lead-out needle framework is provided with a framework body and at least two contact pins which are integrally injection molded in the framework body and mutually insulated, one ends of the contact pins extend out of the framework body and are connected with the wiring terminals of the coils in a one-to-one correspondence manner, and the other ends of the contact pins are exposed out of the framework body and are used for forming electric conduction with external opposite plug-in units when the plug-in units are plugged. The contactor plug-in terminal structure which ensures reliable connection adopts the lead-out needle framework to be connected with the wiring terminal of the coil, and meanwhile, the plug-in port of the lead-out needle framework or the upper end of the lead-out needle framework is matched with the upper cover of the contactor to form the plug-in end, so that the contactor plug-in terminal structure can ensure reliable connection with the outside, is convenient to assemble and reduces the manufacturing cost.

Description

Contactor plug-in terminal structure capable of ensuring reliable connection

Technical Field

The utility model relates to the technical field of contactors, in particular to a contactor plug-in terminal structure capable of guaranteeing reliable connection.

Background

The working principle of the contactor is that after a contactor coil is electrified, coil current can generate a magnetic field, and the generated magnetic field enables a static iron core to generate electromagnetic attraction to attract a movable iron core and drive a movable contact of the contactor to act to be in contact conduction with two static contacts; when the coil is powered off, the electromagnetic attraction force disappears, and the movable contact is restored under the action of the release spring.

The two ends of the coil need to be led out of the contactor and used for being connected with an external power supply so as to control the power supply and the power failure of the coil. At present, coils of single or multiple contactors existing in the market are generally led out directly through a wire harness mode, the wire harness penetrates through a contactor shell to extend out, the wire harness is easy to scratch in the assembly or use process, potential risks exist, the length of the wire harness needs to be controlled in the assembly process, labor cost is increased, and the use cost of the wire harness is correspondingly increased.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a contactor plug-in terminal structure for ensuring reliable connection, which adopts a lead-out needle framework to be connected with a wiring terminal of a coil, and meanwhile, the lead-out needle framework is matched with an upper cover of a contactor to form a plug-in end, so that not only can unnecessary troubles brought by adopting a wire harness lead-out mode be avoided, but also the assembly is convenient, the cost is reduced, and the reliable connection with the outside can be ensured.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a contactor plug terminal structure for ensuring reliable connection for realizing electrical connection of a coil of a contactor and an external power supply, comprising: the lead-out needle framework is provided with a framework body and at least two contact pins which are integrally injection molded in the framework body and mutually insulated, one ends of the contact pins extend out of the framework body and are connected with the wiring terminals of the coils in a one-to-one correspondence manner, and the other ends of the contact pins are exposed out of the framework body and are used for forming electric conduction with external opposite plug-in units when the plug-in units are plugged.

As a further improvement of the utility model, a butt joint accommodating cavity is arranged on one side of the upper cover of the contactor, the upper end of the leading-out needle framework is inserted into the butt joint accommodating cavity, and the other end of the contact pin is positioned in the butt joint accommodating cavity, so that a plug-in end is formed on the upper cover.

As a further improvement of the utility model, one side of the upper cover is provided with a butt-joint protective cover for enclosing the butt-joint accommodating cavity, and the butt-joint protective cover is provided with a first buckle.

As a further improvement of the utility model, the opposite insert shield protrudes outwards from a corresponding side surface of the upper cover, and the outline formed by the opposite insert shield is matched with the external opposite insert.

As a further improvement of the utility model, the butt joint accommodation chamber is formed by extending downwards from the top of the upper cover in a manner of opening at the upper and lower ends.

As a further improvement of the utility model, a plurality of convex ribs for limiting the framework body are arranged on the inner peripheral wall of the butt joint accommodating cavity.

As a further improvement of the utility model, the extraction needle framework is also provided with a plug-in port connected to the top of the framework body, and the other ends of the contact pins extend into the plug-in port, so that a plug-in end is formed.

As a further improvement of the utility model, the upper cover of the contactor is provided with a containing groove at one side thereof, and the plug-in port is inserted into the containing groove.

As a further improvement of the utility model, lugs are arranged on two sides of the plug-in port, slots are arranged on two sides of the upper cover, which are positioned on the accommodating groove, and the plug-in port is inserted into the corresponding slots through the lugs on the plug-in port to be fixed with the upper cover.

As a further improvement of the utility model, the outer side surface of the plug-in port protrudes out of the corresponding side surface of the upper cover, and a second buckle is arranged on the outer side surface.

As a further improvement of the utility model, a coil framework for winding the coil is arranged in the contactor, a first boss horizontally extends out of one side of the coil framework, which is close to the lead-out needle framework, and the bottom of the framework body is borne on the first boss.

As a further improvement of the utility model, the wiring terminal is integrally injection-molded in the coil framework, one end of the wiring terminal extends out of the coil framework to be connected with the coil, the other end of the wiring terminal is exposed out of the coil framework and is provided with a pin hole, and one end of each pin is respectively inserted into the corresponding pin hole and is welded and fixed.

As a further improvement of the utility model, the rear side of the skeleton body is provided with a second boss which is carried on one step surface inside the contactor.

As a further improvement of the utility model, more than two coils are arranged in the contactor, and more than three pins are arranged on the corresponding lead-out pin framework; the framework body is provided with a transverse part and a longitudinal part extending upwards from the middle part of the transverse part, two ends of the transverse part extend to the outer sides of the corresponding coils respectively along the transverse direction, one ends of the contact pins extend downwards from the positions, corresponding to the coils, of the bottoms of the transverse part respectively, and the other ends of the contact pins extend upwards from the tops of the longitudinal parts.

The beneficial effects of the utility model are as follows: the utility model provides a contactor plug-in terminal structure which ensures reliable connection, adopts a lead-out needle framework to be welded with a wiring terminal of a coil, and simultaneously, a plug-in port of the lead-out needle framework or the upper end of the lead-out needle framework is matched with an upper cover of a contactor to form a plug-in end, so that the use requirement of a customer is met, reliable connection with the outside can be ensured, the accuracy of plug-in with the outside is improved, the defects of poor contact, firing pin, needle withdrawal and the like in the use process are reduced, some unnecessary troubles caused by adopting a wire harness lead-out mode are avoided, the manufacturing cost is reduced, and the assembly is simpler.

Drawings

FIG. 1 is a perspective view of a first embodiment of the present utility model;

FIG. 2 is a top view of a first embodiment of the present utility model;

FIG. 3 is a perspective view of the first embodiment of the utility model with the upper cover and housing removed;

FIG. 4 is a perspective view of a lead frame according to a first embodiment of the present utility model;

FIG. 5 is a perspective view of an upper cover according to a first embodiment of the present utility model;

FIG. 6 is a perspective view of a second embodiment of the present utility model;

FIG. 7 is a top view of a second embodiment of the present utility model;

FIG. 8 is a perspective view of a second embodiment of the present utility model with the upper cover and housing removed;

FIG. 9 is a perspective view of an upper cover and a pin frame assembly in accordance with a second embodiment of the present utility model;

FIG. 10 is a perspective view of a lead frame in a second embodiment of the present utility model;

FIG. 11 is a perspective view of a second embodiment of the present utility model showing an alternative view of the pin frame;

FIG. 12 is a top view of a lead frame in a second embodiment of the utility model;

fig. 13 is a perspective view of an upper cover in a second embodiment of the present utility model.

The following description is made with reference to the accompanying drawings:

1. a coil; 2. a needle frame is led out; 201. a skeleton body; 2011. a second boss; 202. a contact pin; 203. a plug port; 2031. a lug; 2032. a second buckle; 3. a connection terminal; 4. an upper cover; 401. docking the accommodating cavity; 4011. convex ribs; 402. an opposite-plug shield; 4021. a first buckle; 403. a receiving groove; 4031. a slot; 5. a coil bobbin; 501. a first boss.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1 to 5, the present utility model provides a contactor socket terminal structure for ensuring reliable connection, which is used for electrically connecting a coil 1 of a contactor with an external power source. The utility model provides a contactor plug-in terminal structure ensuring reliable connection, comprising: the lead-out needle framework 2 is arranged in the shell of the contactor and is positioned at one side of the top of the coil 1. The lead frame 2 has a frame body 201 and at least two pins 202 integrally injection-molded in the frame body 201 and insulated from each other. The lower ends of the pins 202 extend out of the framework body 201 and are connected with the wiring terminals 3 of the coil 1 in a one-to-one correspondence manner, and the upper ends of the pins 202 are exposed out of the upper end of the framework body 201 and are used for forming electric conduction with an external opposite plug-in unit during opposite plug-in.

Since the contactor in this embodiment is a duplex contactor, which includes two coils 1, the pins 202 in this embodiment have two pairs, i.e., four pairs. Of course, three pins 202 may be provided, and one of them may be used as a common pin for the two coils 1. Referring to fig. 3 and 4, the skeleton body 201 has a transverse portion and a longitudinal portion extending upward from a middle portion of the transverse portion, two ends of the transverse portion extend to outer sides of top portions of the two coils 1 in a transverse direction, and lower ends of the two pairs of pins 202 extend downward from positions of bottom portions of the transverse portion corresponding to the coils 1, respectively; the upper ends of each of the two pairs of pins 202 protrude upward from the top of the longitudinal portion.

Further, two coil bobbins 5 are provided in the contactor, and are respectively used for winding two coils 1. Two coil bobbins 5 are close to the equal horizontal extension of one side of drawing forth needle skeleton 2 respectively and have first boss 501, and the horizontal portion bottom of skeleton body 201 bears on this first boss 501, can play the locate function when the installation to drawing forth needle skeleton 2 on the one hand, on the other hand in the in-process of inserting with outside to the plug-in components, supports skeleton body 201 through first boss 501 and makes the atress more stable, is difficult to damage.

The two pairs of connection terminals 3 are also arranged corresponding to the two coils, the two pairs of connection terminals 3 are uniformly molded in the coil skeleton 5, one ends of the two pairs of connection terminals 3 extend out of the coil skeleton 5 and are connected with the corresponding coils 1, the other ends of the two pairs of connection terminals 3 are respectively exposed from the first boss 501 on the coil skeleton 5, pinholes are respectively arranged on the exposed other ends, and the lower ends of the two pairs of pins 202 are respectively inserted into the corresponding pinholes and are welded and fixed.

Furthermore, the upper end of the lead-out needle framework 2 extends into the upper cover 4 of the contactor, and a plug-in end is formed on the upper cover 4 for external plug-in insertion.

Specifically, referring to fig. 1, 2 and 5, the upper cover 4 is provided with a docking accommodating cavity 401 at a front side thereof, and the docking accommodating cavity 401 is formed by extending downward from a top of the upper cover 4 in a manner of opening at upper and lower ends; the front side of the upper cover 4 is provided with an opposite-inserting shield 402 for enclosing an opposite-inserting accommodating cavity 401, the opposite-inserting shield 402 protrudes outwards from the front side surface of the upper cover 4, and the formed outline of the opposite-inserting shield is matched with an external opposite-inserting piece; the longitudinal part of the lead-out needle framework 2 is inserted into the butt joint accommodating cavity 401 from the inside of the upper cover 4 from bottom to top, and the upper ends of the two pairs of pins 202 are positioned in the butt joint accommodating cavity 401 and are vertically distributed, so that the pins 202, the butt joint accommodating cavity 401 and the butt joint shield 402 are matched to form a plug-in end, the use requirement of a customer is met, the reliability of connection is ensured, meanwhile, the manufacturing cost is reduced, and the assembly is simpler.

Referring to fig. 5, a first buckle 4021 is provided on a front surface of the opposite-plug-in protection cover 402, and the opposite-plug-in protection cover is mutually clamped by the first buckle 4021 in the process of opposite-plug-in connection with the outside, is not easy to separate, and plays a foolproof role to prevent reverse plug-in. In addition, in this embodiment, a plurality of ribs 4011 are vertically disposed on an inner peripheral wall of the docking accommodating cavity 401, and the ribs 4011 are used for limiting the skeleton body 201 inserted into the docking accommodating cavity 401, and meanwhile, in the process of inserting the plug-in unit with the outside, the ribs 4011 play a guiding role.

Example two

The difference from the first embodiment is that: in this embodiment, the structure of the lead-out needle frame 2 and the upper cover 4 is different from those of the first embodiment, so that the formed insertion ends are also different.

Specifically, referring to fig. 6 to 13, the pin-out skeleton 2 is further provided with a plugging port 203 located at the top of the skeleton body 201. Preferably, the plugging port 203 and the skeleton body 201 are integrally injection molded; of course, the connecting device can also be split and connected in a fixed mode. The plugging port 203 is in an open upper end shape, and the upper ends of the two pairs of pins 202 extend into the plugging port 203 and are not covered by the plugging port 203. The upper cover 4 is provided with a receiving groove 403 at a front side thereof, the receiving groove 403 being formed to extend downward from a top of the upper cover 4 in such a manner that both upper and lower ends thereof are opened; the plug-in port 203 is inserted into the accommodating groove 403 from the inside of the upper cover 4 from bottom to top, the outer side surface of the plug-in port 203 protrudes out of the front side surface corresponding to the upper cover 4, and the formed outline is matched with the external plug-in unit, so that the plug-in port 203 and the pin 202 therein form a plug-in end, thereby meeting the use requirement of customers, ensuring the reliability of connection, reducing the manufacturing cost and simplifying the assembly.

In addition, three baffles are arranged inside the plugging port 203 in the embodiment, so that the plugging port 203 is divided into four sockets, the upper ends of the two pairs of pins 202 are respectively positioned in the four sockets, and the accuracy of plugging with the external plugging device can be further improved by adopting the structural design, so that the defects of poor contact, firing pins, pin withdrawal and the like in the using process are reduced.

Referring to fig. 9 to 13, the two sides of the plugging port 203 are respectively provided with a lug 2031, the two sides of the upper cover 4 located in the accommodation groove 403 are respectively provided with a slot 4031, and in the process that the plugging port 203 is inserted into the accommodation groove 403 from the inside of the upper cover 4 from bottom to top, the two lugs 2031 are inserted into the two slots 4031 in a one-to-one correspondence manner, so that the plugging port 203 and the upper cover 4 are fixed.

The second fastening buckle 2032 is provided on the outer surface of the plugging port 203, and is fastened to each other by the first fastening buckle 4021 during the process of plugging with the external plugging component, so that the plugging port is not easy to be separated.

It should be noted that, referring to fig. 8 and 11, the present embodiment further provides a second boss 2011 at the rear side of the skeleton body 201, specifically, the second boss 2011 is located at the upper portion of the transverse portion thereof, and two ends of the second boss 2011 extend to two ends of the transverse portion respectively, wherein the second boss 2011 is just a space-avoiding section for the longitudinal portion. The bottom of the transverse portion of the skeleton body 201 is carried on the first boss 501, and the second boss 2011 of the skeleton body 201 is carried on a step surface inside the contactor, which may be the upper surface of the magnetic pole plate of the contactor or the upper surface of the connection ring in this embodiment. According to the embodiment, the second boss 2011 is arranged, so that the positioning and supporting effects on the lead-out needle framework 2 can be achieved, the creepage distance between the high voltage and the low voltage of the contactor can be increased, and the high-voltage and low-voltage insulation performance of the contactor is improved.

It should be emphasized that, although the two embodiments described in the present application are all duplex contactors, the present application can be applied to a single contactor or to three or more duplex contactors, and the shape of the pin frame 2 and the number of the pins 202 are properly adjusted to meet the use requirement of the corresponding contactor.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (14)

1. A contactor plug terminal structure ensuring reliable connection for realizing electrical connection of a coil (1) of a contactor and an external power supply, characterized by comprising: the lead-out needle framework (2), lead-out needle framework (2) have skeleton body (201) and integrative injection molding in skeleton body (201) in and two at least contact pins (202) of mutual insulation, the one end of contact pin (202) all extends skeleton body (201) and with binding post (3) one-to-one of coil (1) is connected, the other end of contact pin (202) all expose in skeleton body (201) for form electric conduction when inserting to the plug-in components with outside.

2. The contact-making terminal structure for ensuring reliable connection according to claim 1, wherein: the upper cover (4) of the contactor is provided with a butt joint accommodating cavity (401) at one side of the upper cover, the upper end of the lead-out needle framework (2) is inserted into the butt joint accommodating cavity (401) and the other end of the contact pin (202) is positioned in the butt joint accommodating cavity (401), so that a plug-in end is formed on the upper cover (4).

3. The contact-making terminal structure for ensuring reliable connection according to claim 2, wherein: one side of the upper cover (4) is provided with an opposite-inserting shield (402) for enclosing the opposite-inserting accommodating cavity (401), and the opposite-inserting shield (402) is provided with a first buckle (4021).

4. A contact-making terminal structure for ensuring reliable connection according to claim 3, wherein: the opposite plug-in shield (402) protrudes outwards from one side surface corresponding to the upper cover (4), and the outline formed by the opposite plug-in shield is matched with an external opposite plug-in.

5. The contact-making terminal structure for ensuring reliable connection according to claim 2, wherein: the butt joint accommodating cavity (401) is formed by extending downwards from the top of the upper cover (4) in a mode of opening at the upper end and the lower end.

6. The contact-making terminal structure for ensuring reliable connection according to claim 2, wherein: a plurality of convex ribs (4011) used for limiting the framework body (201) are arranged on the inner peripheral wall of the butt joint accommodating cavity (401).

7. The contact-making terminal structure for ensuring reliable connection according to claim 1, wherein: the lead-out needle framework (2) is also provided with a plug-in port (203) connected to the top of the framework body (201), and the other ends of the contact pins (202) extend into the plug-in port (203) so as to form plug-in ends.

8. The contact-making terminal structure for ensuring reliable connection according to claim 7, wherein: an accommodating groove (403) is formed in one side of the upper cover (4) of the contactor, and the plug-in port (203) is inserted into the accommodating groove (403).

9. The contact-making terminal structure for ensuring reliable connection according to claim 8, wherein: the two sides of the plug-in port (203) are provided with lugs (2031), the two sides of the upper cover (4) located on the containing groove (403) are provided with slots (4031), and the plug-in port (203) is inserted into the corresponding slots (4031) through the lugs (2031) on the plug-in port to be fixed with the upper cover (4).

10. The contact-making terminal structure for ensuring reliable connection according to claim 8, wherein: the outer side surface of the plug-in port (203) protrudes out of one side surface corresponding to the upper cover (4), and a second buckle (2032) is arranged on the outer side surface.

11. The contact-making terminal structure for ensuring reliable connection according to claim 1, wherein: be provided with in the contactor and be used for coiling establish coil skeleton (5) of coil (1), coil skeleton (5) are close to one side level of drawing forth needle skeleton (2) is extended and is had first boss (501), the bottom of skeleton body (201) bears on this first boss (501).

12. The contact-making terminal structure for ensuring reliable connection according to claim 11, wherein: the wiring terminal (3) is integrally injection molded in the coil framework (5), one end of the wiring terminal (3) extends out of the coil framework (5) and is connected with the coil (1), the other end of the wiring terminal (3) is exposed out of the coil framework (5) and is provided with a pin hole, and one ends of the contact pins (202) are respectively inserted into the corresponding pin holes and are welded and fixed.

13. The contact-making terminal structure for ensuring reliable connection according to claim 1, wherein: the rear side of the skeleton body (201) is provided with a second boss (2011), and the second boss (2011) is borne on one step surface inside the contactor.

14. The contact-making terminal structure for ensuring reliable connection according to claim 1, wherein: more than two coils (1) are arranged in the contactor, and more than three pins (202) are arranged on the corresponding lead-out pin framework (2); the framework body (201) is provided with a transverse portion and a longitudinal portion extending upwards from the middle of the transverse portion, two ends of the transverse portion extend to the outer side of the corresponding coil (1) along the transverse direction respectively, one end of each contact pin (202) extends downwards from the bottom of the transverse portion to the position corresponding to the coil (1), and the other end of each contact pin (202) extends upwards from the top of the longitudinal portion.

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