CN218827860U - Bolt subassembly, plug and consumer - Google Patents

Abstract

The application relates to a bolt subassembly, plug and electrical apparatus, belongs to the electrical technology field. The bolt component comprises a support body, a bolt and a power line; the bolt comprises an inserting piece and a connecting part, the bolt is fixed on the support body, and the inserting piece and the connecting part are positioned on two sides of the support body; the exposed wire core of the power line is positioned on the surface of the connecting part, which is back to the support body, and the connecting part and the exposed wire core are connected through resistance welding. Adopt this application, can reduce the clearance of bolt and power cord at the junction, and then reduce resistance, promote the electric connection stability.

Description

Bolt subassembly, plug and electrical apparatus

Technical Field

The application relates to the technical field of electricity, in particular to a bolt component, a plug and an electrical appliance.

Background

A plug, such as a plug of an electrical device or a plug of a strip, structurally comprises a pin, a pin holder and a power cord, a connection portion of the pin for electrical connection with the power cord, and an end portion of the power cord for electrical connection with the pin being located in the pin holder.

Under the general condition, bolt and power cord realize the electricity through the riveting mode and connect, and the riveting belongs to physical contact and connects, and bolt and power cord have the clearance in the riveting position, lead to electrical connection unstable, and junction resistance is great.

SUMMERY OF THE UTILITY MODEL

The application provides a bolt subassembly, plug and use electrical apparatus, can overcome the problem that exists among the correlation technique. The technical scheme is as follows:

in one aspect, a latch assembly is provided according to the present application, the latch assembly including a support, a latch, and a power cord;

the plug pin comprises an inserting piece and a connecting part, the plug pin is fixed on the supporting body, and the inserting piece and the connecting part are positioned on two sides of the supporting body;

the exposed wire core of the power line is positioned on the surface of the connecting part, which is back to the support body, and the connecting part and the exposed wire core are connected through resistance welding.

In one possible embodiment, the support body has a notch at a position corresponding to the connecting portion, and the notch is used for enabling the electrode to pass through the notch and to contact with the connecting portion when the connecting portion and the exposed wire core are subjected to resistance welding.

In a possible embodiment, the shape of the latch is L-shaped, the insertion piece is located on one side of the support body, and the connection portion is sheet-shaped, is arranged on the other side of the support body, and is parallel to the support body.

In a possible embodiment, the width of the insertion sheet is greater than the width of the connecting portion, and a space is provided between the insertion sheet and the side edge of the connecting portion on the same side in the width direction.

In one possible embodiment, the exposed wire core has a solder plane matching the connection portion.

In one possible embodiment, the exposed wire core is flat or square cylindrical in shape.

In a possible embodiment, the upper surface of the supporting body has a protrusion protruding from the surface, and the upper surface of the supporting body is a surface facing away from the insert.

In a possible embodiment, the lower surface of the support body has a recess at a position corresponding to the projection.

In a possible embodiment, the first and second sides of the support body each have a planar structure, the two planar structures being parallel and located opposite;

the length of the planar structures, and the spacing between two planar structures, are related to the gripping range of the robot used to process the plug.

In a possible embodiment, the two planar structures are equal in length and are in the range of 8 to 15 mm;

the spacing between two of said planar structures is in the range 18 to 30 mm.

In a possible embodiment, the support body is injection-molded onto the plug by means of an injection molding process.

In one possible embodiment, the upper surface of the support body has a blind hole on at least one side of the connection portion in the width direction;

the top end of the inserting piece is exposed through the blind hole.

In a possible embodiment, the blind hole has a depth and a diameter both greater than 1 mm.

In another aspect, a plug is provided according to the present application, the plug including a cladding and the plug pin assembly described above;

the plug pin assembly is located in the cladding body, and the inserting piece and the power line extend out of the cladding body.

In a possible embodiment, the outer surface of the envelope, on both sides of the power supply line, has L-shaped cut planes;

the vertical tangent plane of the L-shaped tangent plane is intersected with the bottom surface of the cladding body, the transverse tangent plane of the L-shaped tangent plane is positioned between the top surface and the bottom surface of the cladding body, and the bottom surface of the cladding body is the surface adjacent to the insert.

In a possible embodiment, the thickness of the plug is in the range 11 to 14 mm.

In one possible embodiment, the distance between the surface of the exposed wire core facing away from the connecting portion and the top surface of the jacket is greater than or equal to 6.8 mm.

In a possible embodiment, the cover is injection-molded onto the plug assembly by an injection molding process.

In another aspect, an electrical appliance is provided according to the present application, and the electrical appliance includes the plug described above.

In this application embodiment, between the bolt of this bolt subassembly and the power cord, weld through resistance and realize the electricity and connect, and resistance welds and realizes the electricity and connect, compares in riveting and realizes the electricity and connect, can reduce contact gap, and then reduces resistance, promotes electric connection stability, compares in soldering realization electricity and connects, need not the solder, and is friendly to the environment, and then can save cost and environmental protection.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In the drawings:

FIG. 1 is a schematic diagram of a latch assembly according to an embodiment;

fig. 2 is a schematic structural view of a support body to which a latch is fixed according to an embodiment;

FIG. 3 is a schematic diagram of a latch according to an embodiment;

fig. 4 is a schematic structural view illustrating a support body to which a latch is fixed according to an embodiment;

FIG. 5 is a schematic diagram of a latch according to an embodiment;

FIG. 6 is a schematic structural diagram of a support body according to an embodiment;

FIG. 7 is a schematic structural view of a support body according to an embodiment;

FIG. 8 is a schematic view of a support according to an embodiment;

FIG. 9 is a schematic diagram of a plug according to an embodiment;

FIG. 10 is a schematic diagram of a plug according to an embodiment;

FIG. 11 is a schematic structural diagram illustrating a header of a plug according to an embodiment;

FIG. 12 is a cross-sectional schematic view of a head of a plug according to an embodiment;

FIG. 13 is a schematic diagram of a plug according to an embodiment;

fig. 14 is a schematic view of a manufacturing process flow of a plug pin assembly according to an embodiment.

Description of the drawings

1. A support body; 11. a notch; 12. a bump; 13. a groove; 14. blind holes; 15. and a through hole.

2. A bolt; 21. inserting sheets; 22. a connecting portion.

3. A power line; 31. and exposing the wire core.

4. A cladding body; 41. l-shaped tangent plane.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The terminology used in the description of the embodiments of the present disclosure is for the purpose of describing the embodiments of the present disclosure only and is not intended to be limiting of the present disclosure. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The application relates to a plug pin component of a plug, wherein the plug can be a plug of an electrical appliance, the electrical appliance can be electrical equipment, and the electrical appliance can also be a socket and a power strip. The plug may be a two-pole plug (i.e., including two plugs) or a three-pole plug (i.e., including three plugs), and in the drawings in this embodiment, a three-pole plug may be used for example, and the two-pole plug is similar to the three-pole plug, and is not described in detail again. The plug may be a 10A plug (i.e., rated current of 10A), a 16A plug (i.e., rated current of 16A), or the like.

At present, the connection mode of a bolt component and a power line is mostly in a riveting mode, the part of the bolt used for being connected with the power line needs to be processed into a tubular shape, a wire core of the power line is inserted into the tube of the tubular structure of the bolt, then axial force is applied to the tubular structure, the tube opening of the tubular structure is upset to form a nail head, and therefore connection of the bolt and the wire core of the power line is achieved.

Above-mentioned riveting connection mode belongs to the physical contact and connects, exists the clearance between tubular structure and the sinle silk, leads to electrical connection unstable, and junction resistance is great.

In addition, the bolt includes tubular structure, and general tubular structure is inside the plug, along the vertical placement of the thickness direction of plug, can lead to the thickness of plug than higher like this, and the plug is comparatively heavy, is unfavorable for ultra-thinning development.

Moreover, in the process of manufacturing the plug pin, in order to form the tubular structure, a transition area in a triangular shape needs to be manufactured between the insert of the plug pin and the tubular structure, and therefore, the plug pin consumes more material and increases the material cost.

In addition, in the process of processing the plug pin, the processing procedures such as thinning, cutting, curling and riveting are required, so that the processing technology of the plug pin is complex, and the production cycle of the plug is long.

The utility model provides a bolt subassembly, the sinle silk of bolt and power cord is in the junction, and electrical connection is stable, and resistance is little, and bolt and sinle silk are highly less in the junction moreover, make the plug of processing out thinner, are favorable to the ultra-thin development of plug, and the simple structure of bolt uses material fewly, and the processing of being convenient for can also save the materials cost.

As shown in fig. 1, the plug pin assembly includes a support body 1, a plug pin 2 and a power line 3, the plug pin 2 includes a plug sheet 21 and a connecting portion 22, the plug pin 2 is fixed on the support body 1, and the plug sheet 21 and the connecting portion 22 are located at two sides of the support body 1, for example, the plug sheet 21 is located below the support body 1, and the connecting portion 22 is located on the upper surface of the support body 1. With continued reference to fig. 1, the exposed core 31 of the power line 3 is located on the surface of the connecting portion 22 opposite to the support body 1, and the connecting portion 22 and the exposed core 31 are connected by resistance welding.

The support body 1, which may also be referred to as a bracket, is used to support the plug 2, and is made of an insulating material, which may be made of a PC (Polycarbonate) material.

As shown in fig. 1, the support body 1 has a plate shape, and may be a separately processed member or a member that is injection-molded on the plug 2 by an injection molding process, which will be described later on.

As shown in fig. 1, the plug 2 includes an insert 21 and a connecting portion 22, the insert 21 and the connecting portion 22 are integrally formed by a stamping technique, the insert 21 is used for being inserted into a hole of a socket, and the connecting portion 22 is used for being electrically connected with the power line 3.

With continued reference to fig. 1, the power cord 3 is stripped to expose the live, neutral and ground wires, and the live, neutral and ground wires are stripped to expose the conductive core, which may be referred to as the exposed core 31. The exposed wire core 31 is positioned on the surface of the connecting part 22, which is back to the supporting body 1, and the exposed wire core 31 and the connecting part 22 are electrically connected through resistance welding.

In resistance welding, an electrode is applied to the surface of the connection portion 22 facing away from the exposed core 31, an electrode is applied to the surface of the exposed core 31 facing away from the connection portion 22, and then a voltage is applied to a circuit including the two electrodes, so that resistance heat is generated between the two electrodes by a current, and the connection portion 22 and the exposed core 31 are welded together.

The resistance welding mode realizes welding without filling metal such as tin, can reduce materials, save material cost and avoid the environmental problem caused by tin soldering.

And, the connecting portion 22 of the plug 2 and the exposed wire core 31 of the power line 3 are electrically connected by resistance welding, compared with the riveting method, obviously, the resistance welding method has better contact between the connecting portion 22 and the exposed wire core 31, small gap between the two, small resistance at the connecting position and good connection stability.

In the resistance welding, in order to increase the contact area between the connection portion 22 and the exposed wire core 31 and also to increase the contact area between the electrode and the exposed wire core 31, accordingly, as shown in fig. 1, the exposed wire core 31 has a welding plane matching with the connection portion 22. For example, the exposed core 31 may be flat or square cylindrical in shape to form a bonding plane.

In one example, the cylindrical exposed wire core 31 may be flattened prior to resistance welding, such that the exposed wire core 31 is flat or square cylindrical. Thus, the contact area between the connection portion 22 and the exposed core 31 can be increased, and the contact area between the exposed core 31 and the electrode can also be increased.

Also, in order to increase the contact area between the electrode and the connection portion 22, the connection portion 22 may have a plate shape or a plate shape, and as shown in fig. 2, the connection portion 22 has a plate shape or a plate shape and is parallel to the upper surface of the support body 1. Thus, when the flaky connecting part 22 is contacted with the flat or square-column-shaped exposed wire core 31, the contact area between the two is larger, the welding is firmer, and the electric connection stability is improved.

Since the insertion piece 21 of the insert pin 2 is formed in a sheet shape and the connection part 22 is formed in a sheet shape, the insert pin 2 can be formed into the insertion piece 21 and the connection part 22 by bending, and accordingly, as shown in fig. 3, the insert pin 2 is formed in an L-shape.

The shape of the latch 2 is L-shaped, so that the latch 2 can be hung on the support body 1, the sheet-shaped connecting part 22 is hung on one side of the support body 1, and the inserting piece 21 is positioned on the other side of the support body 1. As shown in fig. 4, the sheet-like connection portion 22 is hung on the upper surface of the support body 1, and the insertion piece 21 is positioned below the support body 1.

The connecting portion 22 is a sheet-shaped plug pin, and compared with a plug pin with a tubular connecting portion, it is obvious that the connecting portion is a sheet-shaped plug pin, and the height of the plug pin is smaller, so that the overall height of a plug pin assembly including the plug pin is smaller, and once the overall height of the plug pin assembly is smaller, the thickness of a plug manufactured by the plug pin assembly is also thinner, thereby facilitating the ultra-thinning development of the plug.

Since the sheet-shaped connecting portion 22 is hung on the upper surface of the supporting body 1 so that the lower surface of the connecting portion 22 is in contact with the upper surface of the supporting body 1, in order that the electrode can be in contact with the lower surface of the connecting portion 22 in resistance welding, correspondingly, referring to fig. 2, the supporting body 1 has a notch 11 at a position corresponding to the connecting portion 22, wherein the notch 11 is used for the connecting portion 22 and the exposed wire core 31 to pass through the notch 11 to be in contact with the connecting portion 22 in resistance welding.

For example, as shown in fig. 2, the connecting portion 22 is hung on the surface of the support body 1 at a position close to the bend, and the other position of the connecting portion 22 is opposed to the notch 11.

As described above, the support body 1 may be formed through an injection molding process, and accordingly, the plug pins 2 may be placed in a support body lower mold, wherein the support body lower mold has plug pin holes, the plug pins 21 of the plug pins 2 may be located in the plug pin holes, and the connection portions 21 of the plug pins 2 hang at the hole edges of the plug pin holes, then the support body upper mold is covered above the connection portions 22, then injection molding liquid is injected between the support body lower mold and the support body upper mold, and after the injection molding liquid is solidified and demolded, the support body 1 may be formed, and the support body 1 is fixed with the plug pins 2.

The sheet-shaped connecting part 22 is hung at the hole edge of the insert hole of the lower mold of the support body, and in the injection molding liquid, the injection molding liquid flows, so that the insert 21 floats upwards, that is, the insert 21 may move upwards, thereby causing the exposed lengths of the three inserts 21 to be different, or the exposed length of the insert 21 does not meet the specification.

Then, in order to avoid the floating up of the inserting pieces 21 during the injection molding of the support body 1, accordingly, as shown in fig. 5, the width of the inserting pieces 21 is larger than the width of the connecting portion 22, and the side edges of the inserting pieces 21 and the connecting portion 22 on the same side in the width direction have a distance d1 therebetween.

Wherein the spacing d1 may be in a range of greater than or equal to 0.5 mm.

Thus, in the process of injecting the support body 1, the upper mold of the support body has ejector pins, and after the upper mold of the support body is covered on the lower mold of the support body, the ejector pins of the upper mold of the support body can press the top ends of the insertion pieces 21, namely the end parts of the connection parts 22. Thus, the inserting pieces 21 are difficult to move upwards and float upwards under the pressure of the mould on the supporting body, the exposed length of the inserting pieces 21 can meet the specified requirement, and the exposed lengths of the three inserting pieces 21 can be basically consistent.

It should be noted that, since the end of the insert 21 is pressed by the thimble of the mold on the support, the injection liquid is difficult to flow into the thimble press-contact position, and therefore, after demolding, the blind hole 14 is formed on the support 1 at the position corresponding to the thimble, as shown in fig. 2.

Since the top ends of the insertion pieces 21 are pressed by the ejector pins at two positions in the width direction, after the injection molding of the support body is completed, blind holes 14 are formed in the upper surface of the support body 1 on both sides of the connecting portion 22 in the width direction, and referring to fig. 2, a partial region of the top ends of the insertion pieces 21 is exposed through the blind holes 14.

Of course, a certain position of the top end of the insert 21, such as an end position or an intermediate position, may be pressed by an ejector pin, so that after the injection molding of the support body is completed, a blind hole 14 is formed on the upper surface of the support body 1 near the connecting portion 22.

The size of the blind hole 14 may be greater than 1 mm × 1 mm, that is, the depth of the blind hole 14 is greater than 1 mm, and the diameter is greater than 1 mm.

While the ejector pins of the mold on the support body are pressed at two positions along the width direction of the top end of the insert 21, in another example, the connecting portion 22 and the insert 21 may have the same width but different thicknesses, for example, as shown in fig. 5, the thickness of the insert 21 is greater than that of the connecting portion 22, so that the insert 21 and the connecting portion 22 have a distance d2 in the thickness direction, and then the ejector pins may be pressed in the region of the distance d 2.

Therefore, since the top end of the insert 21 is pressed by the thimble in the injection molding of the support body, at least one blind hole 14 is formed on the upper surface of the support body 1 in the vicinity of the connecting portion 22 after the injection molding of the support body is completed.

It should be noted that the thickness and width of the connecting portion 22 and the inserting piece 21 are different, and are also related to a safety factor, for example, the connecting portion 22 can be as thin and as narrow as possible on the basis of satisfying the safety factor, so as to save materials and avoid material redundancy as much as possible.

The length of the connecting portion 22 is related to resistance welding and encapsulation of the cover 4, for example, if the connecting portion 22 is too short, resistance welding is inconvenient, and if the connecting portion 22 is too long, encapsulation is required too much, so that the cover 4 is oversized, which is not favorable for miniaturization development of the plug.

For example, the width of the connecting portion 22 may range from 3 to 5.4 millimeters, including 3 millimeters and 5.4 millimeters, and the length of the connecting portion 22 may range from 3.5 to 6 millimeters, including 3.5 millimeters and 6 millimeters.

In one example, the plug may be processed by automation to improve productivity, wherein the automated processing is typically handled by a robot. In order to facilitate the gripping of the support body 1 by the robot, correspondingly, as shown in fig. 2 and 4, the first side portion and the second side portion of the support body 1 each have a planar configuration, the planar configuration of the first side portion and the planar configuration of the second side portion are parallel and located opposite to each other, and the length of each planar configuration, as well as the spacing between two of said planar configurations, are related to the gripping range of the robot for processing the plug.

For example, referring to fig. 2, the spacing a between the two planar structures may range from 18 to 30 millimeters, the length B of the two planar structures may be equal, and may range from 8 to 15 millimeters.

In one example, the plug to which the plug pin component belongs comprises a coating body coated outside the plug pin component, wherein the coating body can be formed on the plug pin component through injection molding. In the injection molding coating body, the injection molding liquid can be controlled to flow uniformly and uniformly on the plug pin assembly, so that the cycle of the injection molding coating body is shortened, and the production efficiency of the plug is improved.

When the coating body is injection-molded on the plug pin component, in order to control the injection molding liquid to flow uniformly and uniformly, correspondingly, as shown in fig. 4, the upper surface of the support body 1 is provided with a convex block 12 protruding out of the surface, and the upper surface of the support body 1 is the surface back to the insert 21.

In one example, the protrusion 12 protrudes from the upper surface of the supporting body 1, and serves as a rib of the supporting body 1 to support the injection molding liquid. Due to the existence of the bump 12, the injection molding liquid of the injection molding cladding body basically does not collapse after being solidified, and further injection molding is not required for repairing the collapse for many times, so that the injection molding period can be shortened, and the injection molding efficiency is improved.

Moreover, the lug 12 can also play a role in limiting and shunting, so that injection molding liquid of the injection molding cladding body uniformly flows on the surface of the support body 1 at a constant speed, solidified cross-over traces can be reduced or even avoided, and further injection molding is not required for repairing the cross-over traces, so that the period of the injection molding cladding body can be shortened, and the efficiency of the injection molding cladding body is improved.

In one example, the shape of the bump 12 may be any arrangement, for example, it may be a bar shape as shown in fig. 4, and for example, it may be a square or rectangle shape as shown in fig. 6.

In order to reduce the material used for the bumps 12 and also to avoid the support body 1 from being weighted due to the presence of the bumps 12, correspondingly, as shown in fig. 7, the lower surface of the support body 1, i.e. the surface facing away from the connecting portion 22, is provided with the grooves 13 at the positions corresponding to the bumps 12.

For example, as shown in fig. 7 and 8, the projections 12 and the grooves 13 have the same area, and the grooves 13 are formed on the lower surface of the support body 1 by the projections 12 protruding toward the upper surface.

For another example, as shown in fig. 8, the lower surface of the support body 1 is provided with a plurality of grooves 13 at positions corresponding to the projections 12.

In one example, the number of the protrusions 12 may be multiple, and the protrusions 12 may be disposed between the connection portions 22 of two adjacent plugs 2, so that the protrusions 12 may electrically isolate the two adjacent connection portions 22.

For example, as shown in fig. 4, the tab 12 may be disposed between the connection portion 22 of the line bolt and the connection portion 22 of the ground bolt, and the tab 12 may also be disposed between the connection portion 22 of the neutral bolt and the connection portion 22 of the ground bolt.

The reason why the projection 12 is not arranged between the connection part 22 of the live bolt and the connection part 22 of the neutral bolt is that, as shown in fig. 1, between the connection part 22 of the live bolt and the connection part 22 of the neutral bolt there is a ground wire extending to the connection part 22 of the ground bolt, which is located on the upper surface of the support body 1 and also functions as a projection 12.

In order to increase the strength of the envelope 4 in one example, the support body 1 has through holes 15 extending through its thickness, as shown in fig. 6 and 7, respectively. When the cladding body 4 is injection-molded, the injection molding liquid can flow into the through hole 15, and after the injection molding liquid is solidified, a cylinder is formed in the through hole 15, so that the function of reinforcing the strength of the cladding body 4 is achieved.

Based on the aforesaid, realize the electricity through resistance welding between this bolt subassembly's the bolt and the power cord and connect, resistance welding is compared in riveting and is realized the electricity and connect, can reduce contact gap to reduce resistance, can also promote the electricity connection stability, compare in the soldering realization electricity and connect, resistance welding connects, need not the solder, and is friendly to the environment, and then saves cost and environmental protection.

Because the connected mode between the connecting portion of bolt and the expose sinle silk of power cord is resistance welding, so, connecting portion can be the slice, and then the shape of bolt can be the L type. The L-shaped plug pin can reduce the overall thickness of the plug and is beneficial to the ultra-thin development of the plug.

The shape of bolt is the L type, and simple structure adds man-hour, after accomplishing the punching press attenuate, only need buckle can, need not curling and riveting etc. processing technology is simple, and then can shorten the production cycle of plug, improves the production efficiency of plug.

Because the width of inserted sheet is less than the width of connecting portion, has the interval between the inserted sheet and the side of connecting portion along width direction with one side for in the supporter of moulding plastics, mould pressure is on the top of inserted sheet on through the supporter, thereby makes in moulding plastics, and the phenomenon of floating can not take place basically for the inserted sheet, and then can make the inserted sheet expose the length and accord with the regulation, and the length that exposes of each inserted sheet is equal basically.

The upper surface of the support body is provided with the convex block, the convex block can be used as a rib to play a supporting role in the injection molding coating body, the situation of collapse after the injection molding liquid is solidified is avoided, and then multiple times of injection molding for repairing the collapse is not needed, so that the injection molding period can be shortened, and the production efficiency of the plug is improved.

The upper surface of supporter has the lug, in the cladding body of moulding plastics, can also be to moulding plastics liquid current-limiting and reposition of redundant personnel for the liquid of moulding plastics is at the uniform velocity and flow on the surface of supporter uniformly, reduces and avoids handing-over vestige even, need not to mould plastics many times in order to restore handing-over vestige, and then can shorten the cycle of moulding plastics, promotes production efficiency.

Embodiments of the present application further provide a plug, as shown in fig. 9 and 10, and referring to fig. 1, the plug may include a covering body 4 and the plug pin assembly described above, the plug pin assembly is located in the covering body 4, and both the plug blade 21 and the power line 3 of the plug pin assembly extend out of the covering body 4.

Wherein the insertion piece 21 protrudes from the wrapping body 4, for example, as shown in fig. 9, the end of the insertion piece 21 close to the connecting portion 22 and the portion adjacent to the end are located in the wrapping body 4, and the rest of the insertion piece 21 protrudes from the wrapping body 4, and the portion protruding from the wrapping body 4 is referred to as the exposed portion of the insertion piece 21 for being inserted into the insertion hole of the socket.

In which the power cord 3 protrudes from the cover 4, for example, as shown in fig. 9 and 10, and with reference to fig. 1, the portion of the power cord 3 protruding into the surface of the supporting body 1 and the portion of the power cord 3 not protruding into the surface of the supporting body 11 but adjacent to the supporting body 11 are both located in the cover 4, while the rest of the power cord 3 protrudes from the cover 4, and the end of the power cord 3 protruding from the cover 4 is used for connecting to an electrical appliance.

Regarding the features of the cover 4, in one example, the cover 4 may be boxed, including a base and a lid, with the head of the plug assembly located in a box-in space formed by the base and the lid.

In another example, the covering body 4 may be formed on the plug assembly by an injection molding process, and the supporting body 1, the connecting portion 22 and the portion of the power line 3 extending into the surface of the supporting body 1 are covered therein.

For example, the cladding 4 may be injection molded by placing the plug pin assembly in a cladding mold, injecting an injection molding liquid into the cladding mold, solidifying, and demolding to obtain the plug shown in fig. 9.

The coating body 4 is formed into a plug by injection molding on the plug pin assembly or is assembled with the plug pin assembly to form the plug after being produced separately, and the thickness of the plug is thinner.

For example, the plug including the plug pin assembly has a low height of the L-shaped plug pin, so that the thickness h1 of the manufactured plug is in a range of 11 to 14 mm, which may include 11 mm and 14 mm, as shown in fig. 11. The connecting part is a plug pin with a tubular structure, and the height of the plug pin is higher, so that the thickness of the processed plug pin is usually more than 16 mm. Therefore, the plug processed by the plug with the connecting part in a sheet shape can be thinned by 2 to 5 millimeters compared with the plug processed by the plug with the connecting part in a tubular structure.

In addition, since the connecting portion 22 of the plug pin 2 is sheet-shaped and is parallel to the upper surface of the supporting body 1, the height of the plug pin 2 is low, and thus, the distance h2 between the upper surface of the exposed core 31 and the top surface of the covering body 4 can be increased (as shown in fig. 12), without worrying about the increase of the thickness h1 of the plug due to the increase of the distance h 2.

The upper surface of the exposed core 31 is the surface facing away from the connecting portion 22, and the top surface of the cover 4 is the surface facing away from the insert 21, as shown in fig. 12.

The larger the distance h2 between the upper surface of the exposed wire core 31 and the top surface of the cladding 4 is, the better the electrical isolation degree of the plug is, and the higher the safety is.

For example, the chip-shaped connecting portion 22 may be formed such that a distance h2 between the upper surface of the exposed core 31 and the top surface of the cover 4 is 6.8 mm or more.

And the connecting part is a plug pin with a tubular structure, and after the connecting part is riveted with the exposed wire core, the distance between the riveting position and the top surface of the plug is usually less than or equal to 2.8 mm.

Therefore, the connecting portion 22 is a flaky plug pin, so that the distance h2 between the exposed wire core of the power line and the top surface of the coating body can be increased, the larger the distance h2 is, the higher the safety of the plug is, and the safety of the plug can be further improved.

In application, in order to facilitate a user to insert and extract the plug into and from the jack of the socket, that is, in order to facilitate the user to use, correspondingly, as shown in fig. 13, the outer surface of the cladding body 4, on both sides of the power line 3, has L-shaped cut planes 41; the vertical tangent plane of the L-shaped tangent plane 41 is intersected with the bottom surface of the cladding body 4, the transverse tangent plane of the L-shaped tangent plane 41 is positioned between the top surface and the bottom surface of the cladding body 4, and the bottom surface of the cladding body 4 is the surface adjacent to the inserting piece 21. In fig. 13, the power supply line 3 is not shown.

Therefore, when a user plugs and unplugs the plug, the fingers are buckled at the transverse tangent plane of the L-shaped tangent plane 41, the plug can be easily inserted into the jack of the socket, and the plug can also be easily pulled out of the jack of the socket.

Moreover, because the fingers of the user are buckled at the transverse tangent plane of the L-shaped tangent plane 41, the danger of electric shock caused by the fact that the fingers of the user extend to the inserting pieces 21 can be avoided, and the use safety of the plug can be further improved.

In this application embodiment, this plug includes bolt subassembly and cladding body, welds through resistance between this bolt subassembly's the bolt and the power cord and realizes the electricity and connect, and resistance welds and compare in riveting and realize the electricity and connect, can reduce the contact gap to reduce resistance, promote the electric connection stability, compare in soldering and realize the electricity and connect, need not the solder, friendly to the environment, and then save cost and environmental protection.

The embodiment of the application also provides an electrical appliance, which can comprise the plug, wherein the electrical appliance can be electrical equipment, and also can be a socket and a power strip.

The embodiment of the application also provides a manufacturing process of the bolt component, and the bolt component can be the bolt component.

The execution main body of the manufacturing process can be a mechanical arm so as to realize automatic production and processing of the plug pin assembly.

Fig. 14 is a schematic flow chart of the manufacturing process.

In step 1401, the insert piece 21 of the insert pin 2 is inserted into the insert piece hole of the support body lower mold.

Wherein the connecting part 22 of the bolt 2 is hung on the hole edge of the inserting sheet hole.

In step 1402, the upper mold of the support body is placed on the lower mold of the support body, and the ejector pins of the upper mold of the support body press the top ends of the inserts 21.

Wherein, the top of the inserting piece 21 is one end connected with the connecting part 22.

In step 1403, injection molding liquid is injected into the lower support mold and the upper support mold to obtain the support 1 to which the plug pins 2 are connected.

Wherein, the surface of the supporting body 1 is formed with a blind hole 14 at the position corresponding to the thimble, and the local area of the top end of the inserting piece 21 is exposed through the blind hole 14.

For example, if the top ends of the insertion pieces 21 are pressed by the ejector pins at two positions in the width direction, after the injection molding of the support body is completed, blind holes 14 are formed on the upper surface of the support body 1 on both sides of the connecting portion 22 in the width direction, and as shown in fig. 2, the bottom of the blind hole 14 has the top ends of the insertion pieces 21.

For another example, if a certain position (such as the middle position or the end position) of the top end of the insert 21 is pressed by a thimble, a blind hole 14 is formed on the upper surface of the support body 1 near the connecting portion 22 after the injection molding of the support body is completed.

The size of the blind hole 14 may be greater than 1 mm × 1 mm, that is, the depth of the blind hole 14 is greater than 1 mm, and the diameter is greater than 1 mm.

In step 1404, the exposed core 31 of the power line 3 is resistance welded to the surface of the connecting portion 22 opposite to the support body 1 to obtain the plug pin assembly.

For example, one electrode is applied to the surface of the connection portion 22 facing away from the exposed core 31, the other electrode is applied to the surface of the exposed core 31 facing away from the connection portion 22, and then a voltage is applied to the circuit of the two electrodes, so that a current flows between the exposed core 31 and the connection portion 22, and resistance heat is generated, so that the exposed core 31 and the connection portion 22 are welded together.

In the embodiment of the application, the pin assembly processed by the manufacturing process is electrically connected with the power line through resistance welding, and compared with riveting, the pin assembly can reduce contact gaps, further reduce resistance, improve electrical connection stability, and compared with soldering, the pin assembly is electrically connected, does not need solder, is environment-friendly, and further saves cost and protects environment.

According to the plug pin component processed by the manufacturing process, because the top end of the insert is pressed by the mould on the support body in the injection molding support body, the insert basically cannot float in the injection molding support body, so that the length of the exposed part of the insert meets the specification, and the length of the exposed part of each insert is basically equal.

The embodiment of the application also provides a manufacturing process of the plug, and the plug can be the plug.

The execution main body of the manufacturing process can be a mechanical arm so as to realize automatic production and processing of the plug.

The manufacturing process may include placing the plug pin assembly in a clad mold and then injecting an injection molding liquid into the clad mold to obtain the plug.

Compared with a box-packed wrapping body comprising a box base and a box cover, the wrapping body formed by the injection molding process is low in cost and simple in processing process.

In the embodiment of the application, the plug processed by the manufacturing process is electrically connected with the power line through resistance welding, the resistance welding is compared with riveting to achieve electric connection, contact gaps can be reduced, resistance is reduced, electric connection stability can be improved, and compared with tin soldering to achieve electric connection, resistance welding is achieved, welding flux is not needed, the plug is environment-friendly, and cost is saved and environmental protection is achieved.

The above description is only an example of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the principles of the present application should be included in the scope of the present application.

Claims (19)

1. The bolt component is characterized by comprising a support body (1), a bolt (2) and a power line (3);

the plug pin (2) comprises an inserting piece (21) and a connecting part (22), the plug pin (2) is fixed on the support body (1), and the inserting piece (21) and the connecting part (22) are positioned on two sides of the support body (1);

the exposed wire core (31) of the power line (3) is positioned on the surface of the connecting part (22) back to the support body (1), and the connecting part (22) and the exposed wire core (31) are connected through resistance welding.

2. Plug pin assembly according to claim 1, in which the support body (1) has notches (11) at positions corresponding to the connection portions (22), the notches (11) being adapted to allow the electrodes to pass through the notches (11) and to come into contact with the connection portions (22) when the connection portions (22) and the exposed wire core (31) are resistance welded.

3. The bolt assembly according to claim 1, characterized in that the bolt (2) is L-shaped, the insert (21) is located on one side of the support body (1), and the connecting portion (22) is sheet-shaped, is arranged on the other side of the support body (1), and is parallel to the support body (1).

4. The latch pin assembly of claim 3, characterized in that the width of the tab (21) is greater than the width of the connecting portion (22), and the tab (21) and the side edge of the connecting portion (22) on the same side in the width direction have a space therebetween.

5. The plug pin assembly of claim 1, wherein said exposed wire core (31) has a soldering plane that mates with said connecting portion (22).

6. The plug pin assembly of claim 5, wherein the exposed wire core (31) is flat or square cylindrical in shape.

7. The latch assembly according to claim 1, characterized in that the upper surface of the support body (1) has a projection (12) protruding from the surface, and the upper surface of the support body (1) is the surface facing away from the insert (21).

8. The latch assembly according to claim 7, characterized in that the lower surface of the support body (1) has a recess (13) at a position corresponding to the projection (12).

9. The latch assembly according to claim 1, characterized in that the first and second sides of the support body (1) each have a planar configuration, the two planar configurations being parallel and located opposite;

the length of the planar structures, and the spacing between two of the planar structures, are related to the gripping range of the robot used to process the plug pin assembly.

10. The latch assembly of claim 9, wherein said two planar structures are equal in length and are in the range of 8 to 15 mm;

the spacing between the two planar structures is in the range of 18 to 30 mm.

11. The plug pin assembly according to any one of claims 1 to 10, characterized in that the support body (1) is injection-molded on the plug pin (2) by an injection molding process.

12. The latch assembly according to claim 11, characterized in that the upper surface of the supporting body (1) has, on at least one side of the connecting portion (22) in the width direction, a blind hole (14);

the top end of the inserting piece (21) is exposed through the blind hole (14).

13. The plug pin assembly according to claim 12, characterized in that the depth and the diameter of the blind hole (14) are both greater than 1 mm.

14. A plug, characterized in that it comprises a cover (4) and a plug pin assembly according to any one of claims 1 to 13;

the plug pin assembly is located in the cladding body (4), and the inserting piece (21) and the power line (3) extend out of the cladding body (4).

15. Plug according to claim 14, characterised in that the outer surface of the cover (4), on both sides of the power cord (3), has L-shaped cut planes (41);

the vertical tangent plane of the L-shaped tangent plane (41) is intersected with the bottom surface of the cladding body (4), the transverse tangent plane of the L-shaped tangent plane (41) is positioned between the top surface and the bottom surface of the cladding body (4), and the bottom surface of the cladding body (4) is the surface adjacent to the insertion piece (21).

16. The plug of claim 14 wherein the thickness of the plug is in the range of 11 to 14 millimeters.

17. Plug according to claim 14, characterised in that the spacing between the surface of the exposed core (31) facing away from the connection (22) and the top surface of the cladding (4) is greater than or equal to 6.8 mm.

18. Plug according to any of claims 14 to 17, characterised in that the cover (4) is injection moulded onto the plug pin assembly by means of an injection moulding process.

19. An electrical consumer, characterized in that it comprises a plug according to any one of claims 14 to 18.

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