CN219739422U - Connector assembly - Google Patents

Abstract

Disclosed herein is a connector assembly comprising a terminal body and an insulating connection assembly; the terminal body comprises a connecting part and contact parts respectively extending from two ends of the connecting part, the contact parts are provided with through holes for a fastener to pass through, the insulating connecting component is connected with the contact parts in a matched mode to limit the fastener, and the terminal body is electrically connected with the butt joint end through the fastener. According to the connector assembly, the electric connection of the cables can be conveniently and rapidly realized, the occupied space is small, and the arrangement is flexible.

Description

Connector assembly

Technical Field

The present disclosure relates to the field of electrical connectors, and more particularly to a connector assembly.

Background

The new energy automobile mainly uses a vehicle-mounted battery pack to provide core energy for the automobile, and the transmission of electric energy is responsible for transmission by a high-voltage electric system. The vehicle-mounted battery pack is an important component part of the high-voltage electric system, and has the main effects of distributing external high-voltage cables through the cable junction box and controlling the power supply of other power distribution units of the new energy electric vehicle, so that energy is reasonably distributed to all power utilization devices, power supply distribution such as driving and steering is realized, and all parts of the new energy electric vehicle are driven to normally operate. The existing branching scheme in the current market realizes branching/doubling functions through connecting terminals and inscribed copper bar connecting wires. Therefore, the device has the defects of multiple parts, complex structure, high cost, large volume, occupied space, high layout requirement and inflexibility.

Disclosure of Invention

The purpose of this document is to provide a connector assembly, can conveniently, swiftly realize the electricity of cable and connect, and occupation space is less, the flexible arrangement.

A connector assembly is provided herein that includes a terminal body and an insulating connection assembly; the terminal body comprises a connecting part and contact parts respectively extending from two ends of the connecting part, the contact parts are provided with through holes for a fastener to pass through, the insulating connecting component is connected with the contact parts in a matched mode to limit the fastener, and the terminal body is electrically connected with the butt joint end through the fastener.

Therefore, only the terminal body and the insulating connecting component are matched, and the electric connection between the cables can be realized through the fasteners.

Preferably, the contact portion comprises a first contact portion and a second contact portion, the insulating connecting assembly comprises a first insulating connecting assembly arranged on the first contact portion and a second insulating connecting assembly arranged on the second contact portion,

the first insulating connecting assembly surrounds the first contact part to form a matching cavity, and a first electric appliance is electrically connected with the first contact part in the matching cavity;

the second insulating connecting assembly surrounds the second contact portion to form a protruding matching end, and the protruding matching end stretches into the second electric appliance to enable the second contact portion to be electrically connected with the second electric appliance.

Therefore, the first contact part and the second contact part of the terminal body are respectively provided with different insulating connection assemblies, and different types of butting electrical appliances can be matched.

Preferably, the second contact portion includes a third contact surface facing the second electrical apparatus, a second limiting step protruding from the third contact surface, the second limiting step being disposed around the through hole of the second contact portion, and the second insulating connecting assembly surrounding the second limiting step to be configured as the protruding mating end.

Preferably, the outer surface of the protruding fitting end is provided with an annular rib for interference fit with the inside of the second electrical appliance.

Therefore, the stable connection between the second contact part of the terminal body and the second electric appliance can be realized through the annular convex rib.

Preferably, the fastener passes through the through hole of the second contact part and extends out of the second limit step to be electrically connected with the second electric appliance.

Thereby, the electrical connection of the second contact portion of the terminal body with the second electrical consumer can be achieved by the fastener.

Preferably, the connection comprises at least one bending section.

Through setting up at least one section of bending, the connecting portion of this connector assembly can take place the elastic deformation in the reasonable within range more easily, consequently when cable and cable/butt joint electric connector carry out the assembly connection, can cushion the assembly force when assembling, also make the cable more nimble of arranging in electric automobile simultaneously.

Preferably, the bending section is made of flexible material.

Preferably, the ratio of the unfolding length of the bending section to the linear distance between two ends of the bending section is 1:0.12-1:0.98.

Preferably, the through holes at two ends of the bending section are a first mounting hole and at least one second mounting hole which is movable relative to the first mounting hole, and the ratio range of the movable distance of the center point of the second mounting hole relative to the center point of the first mounting hole to the diameter of the first mounting hole is: 0.28:1-1.75:1.

preferably, the connecting portion is covered with an insulating layer, and at least the surface of the insulating layer on the bending section is covered with a wear-resistant layer.

Preferably, the insulating connecting assembly comprises a first insulating connecting piece and a second insulating connecting piece which are matched with each other and are mounted on two sides of the first contact part, and the fastener is movably mounted in a space formed by the first insulating connecting piece and the second insulating connecting piece.

Therefore, through the mutual matching installation of the first insulating connecting piece and the second insulating connecting piece on the first contact part, the holding and the limiting of the fastener can be realized.

Preferably, the first contact portion has a first contact surface facing the abutting end, and a second contact surface disposed opposite to the first contact surface, the first insulating connector is mounted to the first contact surface, and the second insulating connector is snapped to the first insulating connector from one side of the second contact surface.

Therefore, the first insulating connecting piece is connected with the second insulating connecting piece in a clamping mode, and the matching mode is simple and the installation is quick.

Preferably, the first limiting step protrudes from the first contact surface to form a cylindrical first limiting step, the first limiting step surrounds the through hole of the first contact part to form a first butt joint cavity, the first insulating connecting piece is provided with a first sleeve matched with the first limiting step, and the first sleeve and the end face of the first limiting step form a second butt joint cavity.

Thus, the fastener is received in the first mating cavity from the second contact surface through the through hole, and the conductive portion (e.g., the electrical conductor at the end of the cable, the terminal of the mating electrical connector, etc.) that mates with the connector assembly may be received in the second mating cavity and mate with the end face of the first stop step; the butted conductive part can further protrude, and the protruding part can extend into the first butting cavity to be electrically connected with the fastener, so that the area of electrical connection is increased, and the stability of electrical connection is ensured.

Preferably, the surface of the first limiting step is provided with a conductive wear-resistant layer.

Preferably, the conductive wear-resistant layer is made of one of gold, silver, nickel, tin-lead alloy, zinc, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver and silver-gold-zirconium alloy.

Preferably, the first insulating connector is further provided with a second sleeve arranged radially outwards with respect to the first sleeve, a third abutment cavity being formed between the second sleeve and the first sleeve.

Therefore, after the electric connection assembly is electrically connected with the butt joint end, waterproof materials can be arranged in the third butt joint cavity for filling so as to ensure sealing and waterproof performance.

Preferably, the first insulating connector includes a first connector body and a first fastening portion extending from an outer edge of the first connector body, the first connector body covers the first contact surface, and the first fastening portion fastens a side edge of the first contact portion.

Therefore, the first insulating connecting piece basically covers the first contact surface, and the terminal body can be protected from being corroded and damaged by the external environment.

Preferably, the first connector body, the first fastening portion, the first sleeve and the second sleeve are integrally injection molded.

Thereby, the first insulating connector can be directly molded with a simple process.

Preferably, the first buckling part is provided with a plurality of bulges which are arranged at intervals in the circumferential direction, and the second insulating connecting piece is provided with clamping grooves which are matched with the bulges one by one.

Therefore, the connection between the first insulating connecting piece and the second insulating connecting piece can be realized through the simple matching of the protrusion and the clamping groove.

Preferably, the second insulating connector includes a second connector body and a second fastening portion extending from an outer edge of the second connector body, the second connector body covers the second contact surface, and the second fastening portion fastens a side edge of the first contact portion.

Therefore, the second insulating connecting piece basically covers the second contact surface, and the terminal body can be protected from being corroded and damaged by the external environment.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic structural view of a connector assembly of the preferred embodiments herein;

fig. 2 is a schematic structural view of a terminal body according to another embodiment;

FIG. 3 is a perspective view of a first insulating connection assembly in a connector assembly according to the preferred embodiments herein;

FIG. 4 is a perspective view of a second insulated connector in a connector assembly of the preferred embodiments herein;

fig. 5 is a perspective view of a terminal body of yet another embodiment.

The figures are marked as follows:

110. a terminal body; 111. a connection part; 112. a bending section; 113. a first contact portion; 114. a second contact portion; 115. a through hole; 116. a first contact surface; 117. a fourth contact surface; 118. a first limit step; 119. a first docking chamber; 120. a second docking chamber; 131. a first insulating connector; 132. a second insulating connector; 133. a first sleeve; 134. a second sleeve; 135. a third docking chamber; 136. a first connector body; 137. a first buckling part; 138. a protrusion; 139. a clamping groove; 140. a second connector body; 141. a second buckling part; 150. a fastener; 160-a second limiting step; 161-annular ribs; 162-third insulated connector.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

As shown in fig. 1 to 5, there is provided a connector assembly including a terminal body 110 and an insulating connection assembly; the terminal body 110 includes a connection portion 111 and contact portions extending from two ends of the connection portion 111, the contact portions are provided with through holes 115 through which the fasteners 150 pass, the insulating connection assembly is connected with the contact portions in a matching manner to limit the fasteners 150, and the terminal body 110 is electrically connected with the butt ends via the fasteners 150.

It will be appreciated that the mating end may be a cable or a mating electrical connector. The docked cable or docking electrical connector may connect to the battery pack.

Thus, only the mating of the terminal body 110 and the insulating connection assembly is required to achieve an electrical connection between the cables or mating electrical connectors by the fasteners 150.

As shown in fig. 1, the contact portion includes a first contact portion 113 and a second contact portion 114, the insulating connection assembly includes a first insulating connection assembly disposed on the first contact portion 113 and a second insulating connection assembly disposed on the second contact portion 114,

the first insulating connecting assembly surrounds the first contact portion 113 to form a matching cavity in which the first electrical appliance is electrically connected with the first contact portion 113;

the second insulating connecting member surrounds the second contact 114 to form a protruding mating end that extends into the second electrical consumer to electrically connect the second contact 114 to the second electrical consumer.

It will be appreciated that the first insulating connecting member forms a mating cavity (which may be understood as a recessed cavity) and the second insulating connecting member forms a protruding mating end, whereby different electrical consumers may be mated using a recessed or protruding mating structure.

Specifically, the second contact 114 includes a third contact surface (not shown) facing the second electrical device, from which a second limiting step 160 protrudes, the second limiting step 160 being disposed around the through hole of the second contact 114, and the second insulating connecting member surrounding the second limiting step 160 to configure the protruding mating end.

More specifically, as shown in fig. 1, the outer surface of the male mating end is provided with an annular rib 161, the annular rib 161 being for interference fit with the interior of the second electrical consumer. It will be appreciated that the fastener passes through the through hole of the second contact 114 and protrudes beyond the second limit step 160 to electrically connect with the second electrical consumer.

In some embodiments, the connection portion 111 of the terminal body 110 includes at least one bent section 112. Through setting up at least one section 112 of bending, the connecting portion 111 of this connector assembly can take place the elastic deformation in reasonable within a reasonable range more easily, therefore when the cable carries out the assembly connection with cable/butt joint electric connector through this connector assembly, can cushion the assembly force when assembling, also make the cable more nimble of arranging in electric automobile simultaneously.

Preferably, as shown in FIG. 2, the bent section 112 is U-shaped. It is understood that the bent ends are connected with the contact portions at the two ends through arc transition portions. More preferably, an insulating sleeve may be sleeved outside the bent end to protect the terminal body 110 from corrosion and contamination by external environment.

It will be further understood that in other embodiments not shown, the bent ends may be V-shaped or W-shaped or any bent shape that meets the actual requirements.

Further, the bending section 112 is made of flexible material. The flexible material can be bent to different trend requirements of suitable angle matching connection positions and is suitable for different installation and arrangement spaces.

Preferably, the ratio of the unfolded length of the bending section 112 to the linear distance between the two ends of the bending section 112 is 1:0.12-1:0.98. The unfolding length is the length of the bending section 112 when being stretched into a straight line, if the bending section 112 is too short, the bending section is not easy to bend when the two sides of the connecting part are parallel, and if the bending section is too long, the bending section can swing and other parts collide to trigger abnormal sound in a moving environment, such as an automobile. In order to find a suitable ratio of the unfolded length of the bent section 112 to the linear distance between both ends of the bent section 112, the inventors conducted a related experiment. The experimental method is to select the connecting parts 111 with the same unfolding length, and the distances between the two ends of the bending section 112 of each connecting part 111 are different. If the required length is qualified after being bent, abnormal sound is generated after the installation due to the swinging of the bending section 112.

Table 1: the ratio of the unfolding length of the bending section to the linear distance between the two ends of the bending section can influence whether bending and abnormal sound of outgoing line are caused

As shown in table 1, when the ratio of the unfolded length of the bent section 112 to the linear distance between both ends of the bent section 112 is greater than 1:0.12, the connecting part 111 cannot be bent during processing to generate bending sections 112 with parallel extending directions at two ends, and the bending sections are unqualified; when the ratio of the unfolded length of the bending section 112 to the linear distance between the two ends of the bending section 112 is less than 1: at 0.98, the bending section 112 is disqualified even if abnormal sound occurs in the vibration test, so the inventors prefer that the ratio of the expansion length of the bending section 112 to the linear distance between the two ends of the bending section 112 is 1:0.12-1:0.98.

Preferably, the through holes 115 at two ends of the bent section 112 are a first mounting hole and at least one second mounting hole that is movable relative to the first mounting hole, and a ratio of a movable distance of a center point of the second mounting hole relative to a center point of the first mounting hole to a diameter of the first mounting hole ranges from: 0.28:1-1.75:1. the center of the through hole 115 is the center point. The first mounting hole is fixed, and the second mounting hole is movable relative to the first mounting hole, can satisfy different mounting environments, connects the both ends of different distances. However, in a specific installation environment, the first installation hole and the second installation hole are further fixed through bolts, and in many cases, the first installation hole and the second installation hole interfere with other components or two contact parts are too close to each other to enable installation, in order to select a proper ratio of a movable distance of a center point of the second installation hole relative to a center point of the first installation hole to a diameter of the first installation hole, the inventor performs relevant tests, and the test method is to select different test samples to install in the same installation environment, so that the installation can be qualified and the installation can not be qualified. The results are shown in Table 2.

Table 2: influence of the ratio of the movable distance of the center point of the second mounting hole to the center point of the first mounting hole to the diameter of the first mounting hole on the mounting ability

As shown in table 2, when the ratio of the movable distance of the center point of the second mounting hole to the center point of the first mounting hole to the diameter of the first mounting hole is less than 0.28:1, the contact portions at both ends are too close to cause mounting failure, and if the ratio of the movable distance of the center point of the second mounting hole to the center point of the first mounting hole to the diameter of the first mounting hole is greater than 1.75:1, interference of the contact portions and other components is caused to cause mounting failure, so the inventor prefers the range of the ratio of the movable distance of the center point of the second mounting hole to the center point of the first mounting hole to the diameter of the first mounting hole to be: 0.28:1-1.75:1.

preferably, the connection portion 111 is covered with an insulating layer, and at least the surface of the insulating layer on the bent section 112 is covered with a wear-resistant layer. The insulating layer can avoid the risk of short-circuiting the connection portion in contact with other conductors. The bending section can obviously protrude out of the connecting part 111, friction can easily occur between the bending section and the external environment in the process of installation and operation, and therefore, the abrasion-resistant layer is arranged on the insulating layer of the bending section, and the damage of friction to the insulating layer can be reduced.

Specifically, as shown in fig. 2 to 4, the contact part includes a first contact part 113, and the insulation connecting assembly includes a first insulation connecting piece 131 and a second insulation connecting piece 132 which are fitted to each other and mounted to both sides of the first contact part 113, and a fastener 150 is movably mounted in a space formed by the first insulation connecting piece 131 and the second insulation connecting piece 132.

Thus, the first insulating connecting member 131 and the second insulating connecting member 132 are mounted on the first contact portion 113 in a mutually matched manner, so that the fastener 150 can be accommodated and limited.

It is further understood that the second contact 114 and the structure thereon may be identical to the first contact 113. Of course, the second contact 114 and the insulating connection assembly thereon may also be adapted according to practical requirements.

Specifically, it is understood that the second insulated connection assembly may also be similar to the first insulated connection assembly, including a third insulated connection 162 disposed on the third contact surface of the second contact 114 and a fourth insulated connection disposed on the fourth contact surface 117 of the second contact 114. The third insulating connector 162 and the fourth insulating connector may be mounted on the second contact portion 114 in a mutually matched manner, so as to implement the accommodating and limiting of the fastener 150.

More specifically, as shown in fig. 2 and 5, the first contact portion 113 has a first contact surface 116 facing the abutting end, and a second contact surface (not shown) disposed opposite to the first contact surface 116, the first insulating connector 131 is mounted to the first contact surface 116, and the second insulating connector 132 is snapped to the first insulating connector 131 from one side of the second contact surface.

Therefore, the first insulating connecting piece 131 and the second insulating connecting piece 132 are connected in a clamping mode, and the matching mode is simple and quick to install.

As shown in fig. 2, a cylindrical first limiting step 118 is formed by protruding from the first contact surface 116, the first limiting step 118 forms a first abutting cavity 119 around the through hole 115 of the first contact portion 113, the first insulating connecting member 131 is provided with a first sleeve 133 matching the first limiting step 118, and the first sleeve 133 and the end surface of the first limiting step 118 form a second abutting cavity 120.

Thus, the fastener 150 is received from the second contact surface through the through hole 115 in the first mating cavity 119, and a conductive portion (e.g., a conductor at the end of a cable, a terminal of a mating electrical connector, etc.) that mates with the connector assembly may be received in the second mating cavity 120 and mate with an end face of the first stop step 118; the butted conductive portion may further protrude, and the protruding portion may protrude into the first butting cavity 119 to be electrically connected with the fastener 150, thereby increasing an area of the electrical connection and securing stability of the electrical connection.

Preferably, the surface of the first limiting step 118 is provided with a conductive wear layer. On the one hand, the first limiting step 118 has the effect of wear resistance, the surface of the first limiting step is prevented from being worn, the service life is prolonged, and on the other hand, the first limiting step 118 is electrically connected with the butt joint end, so that the electric conduction effect is achieved.

Specifically, the conductive wear-resistant layer is made of one of gold, silver, nickel, tin-lead alloy, zinc, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver and silver-gold-zirconium alloy. The conductive wear-resistant layer is used as a metal contact which needs to be frequently plugged and unplugged, and is a good wear-resistant metal which needs to be used as the conductive wear-resistant layer, so that the service life of the contact can be greatly prolonged. Also, the contact requires good electrical conductivity, and the conductivity and stability of the metal are superior to those of copper or copper alloys, enabling the first limiting step 118 to achieve better electrical performance and longer service life.

In order to demonstrate the impact of different conductive wear-resistant layer materials on the overall performance, the inventors used the same specification, materials, adopted the first spacing step 118 sample of different conductive wear-resistant layer materials, and used the mating connection end of the same specification to perform a series of plug times and conductivity tests. The experimental results are shown in table 3 below.

The number of plugging times in table 3 below is to fix the first limiting step 118 on the experiment table respectively, adopt mechanical device to make the first limiting step 118 simulate plugging, and for every 100 times of plugging, stop to observe the damage condition of the conductive wear-resistant layer on the surface of the first limiting step 118, scratch the conductive wear-resistant layer on the surface of the first limiting step 118, expose the material of the first limiting step 118, stop the experiment, and record the number of plugging times at that time. In this embodiment, the number of plugging times is less than 8000 and is not qualified.

The conductivity in table 3 below is measured by passing a current through the first limiting step 118 and the mating end, and in this embodiment, the conductivity is greater than 99% as acceptable.

Table 3: influence of different conductive and wear-resistant layer materials on the number of plugging times and conductivity of the first limiting step 118

As can be seen from table 3, when the conductive wear-resistant layer is selected from gold, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver and silver-gold-zirconium alloy, the experimental result exceeds the standard value more, and the performance is stable. When the conductive wear-resistant layer is selected from nickel, tin-lead alloy and zinc, experimental results can also meet the requirements, so that the inventor selects one of gold, silver, nickel, tin-lead alloy, zinc, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver and silver-gold-zirconium alloy as the conductive wear-resistant layer.

As shown in fig. 1, the first insulating connector 131 is further provided with a second sleeve 134, the second sleeve 134 being disposed radially outwardly with respect to the first sleeve 133, a third mating cavity 135 being formed between the second sleeve 134 and the first sleeve 133.

Thus, after the electrical connection assembly is electrically connected to the docking end, a waterproof material may be disposed in the third docking chamber 135 to fill the third docking chamber, so as to ensure sealing and waterproof properties.

As shown in fig. 3, the first insulating connector 131 includes a first connector body 136 and a first fastening portion 137 extending from an outer edge of the first connector body 136, the first connector body 136 covers the first contact surface 116, and the first fastening portion 137 fastens a side edge of the first contact portion 113.

Thus, the first insulating connector 131 substantially covers the first contact surface 116, and can protect the terminal body 110 from corrosion and damage by the external environment.

In some embodiments, the first connector body 136, the first snap-fit portion 137, the first sleeve 133, and the second sleeve 134 are integrally injection molded. Thereby, the first insulating connector 131 can be directly molded using a simple process.

As shown in fig. 3 and 4, the first fastening portion 137 has a plurality of protrusions 138 disposed at intervals in the circumferential direction, and the second insulating connecting member 132 has a plurality of engaging grooves 139 that are matched with the plurality of protrusions 138 one by one.

Thus, the connection between the first insulating connector 131 and the second insulating connector 132 can be achieved by a simple fit of the protrusion 138 and the catching groove 139.

As shown in fig. 4, the second insulating connector 132 includes a second connector body 140 and a second fastening portion 141 extending from an outer edge of the second connector body 140, the second connector body 140 covers the second contact surface, and the second fastening portion 141 fastens a side edge of the first contact portion 113.

Thus, the second insulating connector 132 substantially covers the second contact surface, and can protect the terminal body 110 from corrosion and damage by the external environment.

According to the connector assembly herein, only the mating of the terminal body 110 and the insulating connection assembly is required to achieve an electrical connection between the cable and the cable or mating electrical connector by the fastener 150.

Preferably, the material of the connecting portion is aluminum or aluminum alloy, and the material of the contact portion is copper or copper alloy. Copper or copper alloy has high conductivity and is resistant to friction, and most of current electric devices are made of copper, so that contact parts made of copper or copper alloy are needed to be connected to obtain higher electric conduction efficiency. The connection part can be made of aluminum or aluminum alloy with lower price and lighter weight under the condition of meeting the performance.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (21)

1. A connector assembly comprising a terminal body and an insulating connecting assembly; the terminal body comprises a connecting part and contact parts respectively extending from two ends of the connecting part, the contact parts are provided with through holes for a fastener to pass through, the insulating connecting component is connected with the contact parts in a matched mode to limit the fastener, and the terminal body is electrically connected with the butt joint end through the fastener.

2. The connector assembly of claim 1, wherein the contact portion comprises a first contact portion and a second contact portion, the insulated connection assembly comprises a first insulated connection assembly disposed on the first contact portion and a second insulated connection assembly disposed on the second contact portion,

the first insulating connecting assembly surrounds the first contact part to form a matching cavity, and a first electric appliance is electrically connected with the first contact part in the matching cavity;

the second insulating connecting assembly surrounds the second contact portion to form a protruding matching end, and the protruding matching end stretches into the second electric appliance to enable the second contact portion to be electrically connected with the second electric appliance.

3. The connector assembly of claim 2, wherein the second contact includes a third contact surface facing the second electrical consumer, a second limiting step protruding from the third contact surface, the second limiting step disposed about the through hole of the second contact, the second insulating connecting assembly surrounding the second limiting step to be configured as the protruding mating end.

4. A connector assembly according to claim 3, wherein the outer surface of the male mating end is provided with an annular rib for interference fit with the interior of the second electrical consumer.

5. The connector assembly of claim 4, wherein the fastener passes through the through hole of the second contact portion and protrudes beyond the second limit step to electrically connect with the second electrical consumer.

6. The connector assembly of claim 1, wherein the connection portion comprises at least one bent section.

7. The connector assembly of claim 6, wherein the bent section is flexible.

8. The connector assembly of claim 6, wherein the ratio of the unfolded length of the bent segment to the linear distance between the two ends of the bent segment ranges from 1:0.12 to 1:0.98.

9. The connector assembly of claim 6, wherein the through holes at both ends of the bent section are a first mounting hole and at least one second mounting hole movable with respect to the first mounting hole, respectively, and a ratio of a movable distance of a center point of the second mounting hole with respect to a center point of the first mounting hole to a diameter of the first mounting hole ranges from: 0.28:1-1.75:1.

10. the connector assembly of claim 6, wherein the connection portion is covered with an insulating layer, and wherein at least a surface of the insulating layer on the bent section is covered with a wear layer.

11. The connector assembly of claim 2, wherein the insulated connection assembly includes first and second insulated connectors that mate with each other and are mounted to opposite sides of the first contact, the fastener being movably mounted in a space formed by the first and second insulated connectors.

12. The connector assembly of claim 11, wherein the first contact portion has a first contact surface facing the mating end and a second contact surface disposed opposite the first contact surface, the first insulated connector being mounted to the first contact surface, the second insulated connector being snapped onto the first insulated connector from a side of the second contact surface.

13. The connector assembly of claim 12, wherein a first spacing step protruding from the first contact surface forms a cylindrical shape, the first spacing step forming a first mating cavity around the through hole of the first contact portion, the first insulating connector being provided with a first sleeve matching the first spacing step, the first sleeve and an end surface of the first spacing step forming a second mating cavity.

14. The connector assembly of claim 13, wherein a surface of the first stop step is provided with a conductive wear layer.

15. The connector assembly of claim 14, wherein the conductive wear layer is one of gold, silver, nickel, tin-lead alloy, zinc, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, and silver-gold-zirconium alloy.

16. The connector assembly of claim 13, wherein the first insulating connector is further provided with a second sleeve disposed radially outwardly relative to the first sleeve, the second sleeve and the first sleeve defining a third mating cavity therebetween.

17. The connector assembly of claim 16, wherein the first insulating connector includes a first connector body and a first snap-fit portion extending from an outer edge of the first connector body, the first connector body covering the first contact surface, the first snap-fit portion snap-fitting a side edge of the first contact portion.

18. The connector assembly of claim 17, wherein the first connector body, the first snap feature, the first sleeve, and the second sleeve are integrally injection molded.

19. The connector assembly of claim 17, wherein the first snap-fit portion has a plurality of circumferentially spaced projections and the second insulating connector has snap-fit grooves that mate with the plurality of projections.

20. The connector assembly of claim 12, wherein the second insulating connector includes a second connector body and a second snap-fit portion extending from an outer edge of the second connector body, the second connector body covering the second contact surface, the second snap-fit portion snap-fitting a side edge of the first contact portion.

21. The connector assembly of claim 1, wherein the connecting portion is made of aluminum or an aluminum alloy, and the contact portion is made of copper or a copper alloy.