阅读说明：本技术 用于电动车辆的连接器的端子紧固结构 (Terminal fastening structure of connector for electric vehicle ) 是由 权杋柱 梁熙台 姜锡一 金兑洪 吴训熙 于 2020-12-02 设计创作，主要内容包括：用于电动车辆的连接器的端子紧固结构,包括：一对接线片端子,其电连接到电线连接器；插头内部壳体,其在第一端具有供接线片端子插入的开口；以及一对端子保持器,其紧固到插头内部壳体并将接线片端子固定到插头内部壳体。(A terminal fastening structure of a connector for an electric vehicle, comprising: a pair of lug terminals electrically connected to the wire connector; a plug inner housing having an opening at a first end into which the tab terminal is inserted; and a pair of terminal holders fastened to the plug inner housing and fixing the lug terminals to the plug inner housing.)

1. A terminal fastening structure of a connector, comprising:

a pair of lug terminals electrically connected to the wire connector;

a plug inner housing having an opening at a first end into which the terminal of the terminal lug is inserted; and

a pair of terminal holders fastened to the plug inner housing and fixing the lug terminals to the plug inner housing.

2. The terminal fastening structure of the connector according to claim 1, further comprising:

a plug outer housing having an opening at a first end into which the plug inner housing is inserted;

a plug front shield shell inserted into an opening formed below a second end of the plug outer housing;

a plug rear shield shell inserted into the plug outer shell, the plug inner shell inserted into the plug outer shell, and the plug rear shield shell electrically connected to the plug front shield shell; and

a lever rotatably coupled to an outer surface of the plug outer housing such that the plug outer housing surrounds the plug inner housing, the plug front shield shell, and the plug rear shield shell.

3. The terminal-fastening structure of a connector according to claim 2, wherein the plug inner housing has an angled type in which a second end facing an opening into which the tab terminal is inserted is closed, and an additional opening is formed below the second end.

4. The terminal fastening structure of the connector according to claim 2, wherein:

the plug inner housing is inserted and fixed to the inside of the plug rear shield shell, and

fixing grooves coupled with fixing protrusions provided on an inner surface of the plug rear shield case are formed on an upper surface and a side surface of the plug inner case.

5. The terminal fastening structure of the connector according to claim 2, wherein the plug inner housing is formed in a shape whose width is narrowed in a direction of inserting the tab terminal to correspond to a shape of the plug rear shield shell.

6. The terminal fastening structure of the connector according to claim 2, wherein the tab terminal is formed in a plate-like shape whose width is narrowed in a direction of being inserted into the plug inner housing.

7. The terminal fastening structure of the connector according to claim 2, wherein an edge of each of the tab terminals is formed in a chamfered shape.

8. The terminal-fastening structure of a connector according to claim 1, wherein each of the terminal holders comprises:

a terminal holder surface;

a first hook formed on a first side of the terminal holder surface and fastened and fixed to an inside of the inner hole; and

a second hook formed on a second side of the first side facing the surface of the terminal holder and pressed and then restored by elasticity when the tab terminal is inserted and fixed in the plug inner housing, and allowing the tab terminal to be fastened and released between the plug inner housing and the terminal holder.

9. The terminal fastening structure of the connector according to claim 8, wherein the terminal holder surface is formed to have a thickness of a surface on one side of the second hook larger than a thickness of a surface on one side of the first hook.

10. The terminal fastening structure of the connector according to claim 9, wherein a vertical gap prevention protrusion protruding in a direction perpendicular to a surface of the terminal holder is provided at a central portion of each of the terminal holders.

11. A terminal fastening structure of a connector according to claim 10, wherein the vertical gap prevention protrusions face each other and are provided in pairs in a staggered form.

12. A terminal fastening structure of a connector according to claim 11, wherein a horizontal gap prevention protrusion protruding in a direction parallel to a surface of the terminal holder is provided at a central portion of each of the terminal holders.

13. The terminal fastening structure of the connector according to claim 2, wherein the plug outer housing is formed in an angled type in which the second end facing the opening into which the plug inner housing is inserted is closed, and an additional opening is formed below the second end.

14. A terminal fastening structure of a connector according to claim 13, wherein the plug outer housing has a cylindrical rotation protrusion protruding to the outer surface so that the levers are rotatably coupled.

15. The terminal fastening structure of the connector according to claim 14, wherein the plug outer housing has a coupling locking protrusion on an upper surface thereof to engage and fix the lever after rotation.

16. The terminal-fastening structure of a connector according to claim 2, wherein the plug front shield shell includes:

a first striker coupled to an outer surface of the plug inner housing to prevent separation from the plug inner housing; and

a second striker coupled to an inner surface of the plug outer housing to prevent separation from the plug outer housing.

17. The terminal fastening structure of the connector according to claim 16, wherein an upper edge of the plug front shield shell is formed in a chamfered shape that is bent and cut.

18. The terminal-fastening structure of a connector according to claim 2, wherein the front shield shell includes:

an inner ground portion protruding to the inside of the front shield shell to contact the plug rear shield shell for grounding, and

an outer grounding portion protruding to an outside of the front shield shell of the header for grounding.

19. The terminal-fastening structure of a connector according to claim 2, wherein the rear shield shell includes:

an outer housing fixing protrusion protruding outward and fastened to an inner side of the plug outer housing, an

An inner housing fixing protrusion protruding inward and fastened and fixed to an outside of the plug inner housing.

20. The terminal-fastening structure of the connector according to claim 2, wherein the plug rear shield shell includes a contact provided on a surface of the plug rear shield shell and electrically connected to the plug front shield shell.

Technical Field

The present disclosure relates to a terminal fastening structure of a connector, and more particularly, to a terminal fastening structure of a high voltage connector for an electric vehicle, which improves a terminal fixing force and realizes a terminal position assurance structure.

Background

Generally, in a connector (electrical connection system), a holder for securing a connection position is in the form of a slot and a tab, and a guide male/female connector is fastened in parallel. In addition, the fastened connectors are designed to ensure an electrical connection state by preventing them from coming off each other after fastening.

The connection assurance structure of these connectors is classified into a Connector Position Assurance (CPA) system that assures connection between a male connector and a female connector and a Terminal Position Assurance (TPA) system that assures connection between a connector and a terminal.

Since the straight type connector has a simple structure, it is not difficult to realize the TPA structure when connecting the connector to the terminal. However, in the case of the angled type connector, it is often difficult to utilize the position assurance structure. Therefore, in the case of the angled type connector, the TPA structure is not employed, or a structure having a weak fastening force is applied.

In addition, in the case of the conventional angled type connector fastening structure, by applying a rear holder type holder inserted from the rear surface of the connector, when the cable to which the terminal is crimped is fixed to the connector housing and the cable is shaken or pulled, the holder holds the position of the terminal. However, the terminal holding force is somewhat weak. In addition, when the TPA is inserted into the side of the housing to secure the position of the terminals, since the hole is formed on the side of the housing, there is a problem that it cannot be applied to the waterproof connector.

The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

Disclosure of Invention

The present disclosure provides a terminal fastening structure of a connector, in which a terminal holder is pre-fastened to the inside of a connector housing when the connector is assembled, and a locking protrusion of a terminal and the terminal holder are fastened to realize a terminal position assurance structure when the terminal is assembled.

A terminal fastening structure of a connector according to an exemplary embodiment of the present disclosure includes: a pair of lug terminals electrically connected to the wire connector; a plug inner housing having an opening at one end into which the terminal of the terminal strip is inserted; and a pair of terminal holders fastened to the plug inner housing and fixing the lug terminals to the plug inner housing.

The terminal fastening structure of the connector according to the exemplary embodiment of the present disclosure may further include: a plug outer housing having an opening at a first end into which the plug inner housing is inserted; a plug front shield shell inserted into an opening formed below the second end of the plug outer housing; a plug rear shield shell inserted into the plug outer shell, the plug inner shell inserted into the plug outer shell, and the plug rear shield shell electrically connected to the plug front shield shell; and a lever rotatably coupled to an outer surface of the plug outer housing such that the plug outer housing surrounds the plug inner housing, the plug front shield shell, and the plug rear shield shell, i.e., for securing the coupling.

The plug inner housing has an angled type in which a second end facing an opening into which the terminal of the terminal strip is inserted is closed, and an additional opening is formed below the second end.

The plug inner housing may be inserted and fixed to an inner side of the plug rear shield shell, and fixing grooves coupled with fixing protrusions provided on an inner surface of the plug rear shield shell may be formed on an upper surface and a side surface of the outer plug inner housing.

The plug inner housing may be formed in a shape whose width is narrowed in a direction in which the tab terminal is inserted to correspond to a shape of the plug rear shield shell.

The tab terminal may be formed in a plate-like shape whose width is narrowed in a direction of being inserted into the plug inner housing.

The edge of each tab terminal may be formed in a chamfered shape.

Each of the terminal holders may include: a terminal holder surface; a first hook formed on a first side of the terminal holder surface and fastened and fixed to an inside of the inner hole of the plug; and a second hook formed on a second side of the first side facing the surface of the terminal holder, and pressed and then restored by elasticity when the tab terminal is inserted and fixed in the plug inner housing, and allowing the tab terminal to be fastened and released between the plug inner housing and the terminal holder.

The terminal holder surface may be formed to have a thickness of a surface on one side of the second hook larger than a thickness of a surface on one side of the first hook.

A vertical gap prevention protrusion protruding in a direction perpendicular to a surface of the terminal holder may be provided at a central portion of each terminal holder.

The vertical gap prevention protrusions may face each other and be disposed in pairs in a staggered fashion.

A horizontal gap prevention protrusion protruding in a direction parallel to the surface of the terminal holder may be provided at a central portion of each terminal holder.

The plug outer housing may be formed in an angled type in which a second end facing an opening into which the plug inner housing is inserted is closed, and an additional opening is formed below the second end.

The plug outer housing may have a cylindrical rotation protrusion protruding to an outer surface such that the lever is rotatably coupled.

The plug outer housing may have a coupling locking protrusion on an upper surface thereof to engage and fix the lever after being rotated.

The plug front shield shell may include: a first striker coupled to an outer surface of the plug inner housing to prevent separation from the plug inner housing; and a second striker coupled to an inner surface of the plug outer housing to prevent separation from the plug outer housing.

The upper edge of the plug front shield shell may be formed in a chamfered shape that is bent and cut.

In the front shield case may be provided: an inner ground portion protruding to an inside of the front shield shell to contact the plug rear shield shell for grounding; and an external grounding portion protruding to the outside of the front shield shell of the header for grounding.

In the rear shield shell may be provided: an outer housing fixing protrusion protruding outward and fastened to an inner side of the plug outer housing; and an inner housing fixing protrusion protruding inward and fastened and fixed to an outside of the plug inner housing.

The plug rear shield shell may include contacts disposed on a surface of the plug rear shield shell and electrically connected to the plug front shield shell.

With the terminal fastening structure of the connector according to the exemplary embodiment of the present disclosure, there is an effect of enhancing the terminal holding force and improving the contact reliability of the terminal by supporting the terminal position assurance structure so that the terminal is not separated from the connector.

Drawings

Fig. 1 is a perspective view schematically showing a terminal fastening structure of a connector according to an exemplary embodiment of the present disclosure.

Fig. 2 is an exploded perspective view schematically showing a terminal fastening structure of a connector according to an exemplary embodiment of the present disclosure.

Fig. 3 is a diagram illustrating a tab terminal according to an exemplary embodiment of the present disclosure.

Fig. 4 is a view illustrating a plug inner housing according to an exemplary embodiment of the present disclosure.

Fig. 5 is a view illustrating a terminal holder according to an exemplary embodiment of the present disclosure.

Fig. 6 is a view illustrating a state in which a tab terminal is fastened to an inner housing of a plug by a terminal holder according to an exemplary embodiment of the present disclosure.

Fig. 7 is a diagram illustrating a process of fastening a tab terminal to a plug inner housing through a terminal holder according to an exemplary embodiment of the present disclosure.

Fig. 8 is a view illustrating a plug outer housing according to an exemplary embodiment of the present disclosure.

Fig. 9 is a view illustrating a plug front shield shell according to an exemplary embodiment of the present disclosure.

Fig. 10 is a view illustrating a plug rear shield shell according to an exemplary embodiment of the present disclosure.

Detailed Description

It is understood that the term "vehicle" or "vehicular" or other similar terms as used herein include motor vehicles in general, such as passenger vehicles including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuel from non-petroleum sources). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as a vehicle that is both gasoline powered and electric powered.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Throughout this specification, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements. In addition, the terms "unit," "device," "means" and "module" described in the specification mean a unit for processing at least one of functions and operations, and may be implemented by hardware components or software components and a combination thereof.

Further, the control logic of the present disclosure may be embodied as a non-transitory computer readable medium on a computer readable medium containing executable program instructions executed by a processor, controller, or the like. Examples of computer readable media include, but are not limited to, ROM, RAM, Compact Disc (CD) -ROM, magnetic tape, floppy disk, flash drive, smart card, and optical data storage device. The computer readable medium CAN also be distributed over network coupled computer systems so that the computer readable medium is stored and executed in a distributed fashion, for example, by a telematics server or a Controller Area Network (CAN).

The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. As those skilled in the art will appreciate, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

Further, in the exemplary embodiments, since like reference numerals denote like elements having the same configuration, the first exemplary embodiment is arbitrarily representatively described, and in other exemplary embodiments, only a configuration different from the first exemplary embodiment will be described.

The figures are schematic and not shown to scale. Relative dimensions and proportions of parts of the figures have been shown exaggerated or reduced in size, for the sake of clarity and convenience in the drawings, and the dimensions are exemplary only and not limiting. In addition, like structures, elements or components shown in two or more figures are referred to with the same reference numerals to denote like features. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

Exemplary embodiments of the present disclosure illustrate exemplary embodiments of the present disclosure in detail. As a result, various modifications to the drawings will be contemplated. Thus, the exemplary embodiments are not limited to the specific aspects of the regions illustrated, and include, for example, modifications to aspects by manufacture.

Now, a terminal fastening structure of a connector according to an exemplary embodiment of the present disclosure will be described with reference to fig. 1 to 10.

Fig. 1 is a perspective view schematically showing a terminal fastening structure of a connector according to an exemplary embodiment of the present disclosure, and fig. 2 is an exploded perspective view schematically showing the terminal fastening structure of the connector according to the exemplary embodiment of the present disclosure.

Referring to fig. 1 and 2, a terminal fastening structure of a connector according to an exemplary embodiment of the present disclosure includes a tab terminal 10 electrically connected to an electric wire connector, a plug inner housing 20, and a terminal holder 30.

The tab terminals 10 may be disposed in pairs to face each other, and one end of the wire connector and one end of the tab terminals 10 are coupled and fixed to be electrically connected to the wire connector. The tab terminal 10 may be formed of a copper alloy.

The plug inner housing 20 has an opening formed at a first end, and the tab terminal 10 is inserted through the opening. The second end facing the opening of the plug inner housing 20 is closed and another (or "additional") opening is formed towards the bottom of the second end.

The terminal holder 30 is a member that fixes the tab terminal 10 to the plug inner housing 20, and is fixedly mounted in the plug inner housing 20 in advance. The tab terminal 10 may be inserted through an opening of the plug inner housing 20 to be mounted and fixed to the plug inner housing 20 by the terminal holder 30. The terminal holders 30 may be disposed in pairs in a shape facing each other so as to be disposed in pairs in the shape facing each other of the tab terminals 10.

Referring to fig. 2, the terminal fastening structure of the connector according to an exemplary embodiment of the present disclosure may further include a plug outer housing 40, a plug front shield shell 50, a plug rear shield shell 60, and a lever 70.

The plug outer housing 40 is formed with an opening at one end, and the plug inner housing 20 is inserted through the opening. In addition, the plug inner housing 20 and the plug rear shield shell 60 are inserted into the plug outer housing 40, while the plug inner housing 20 is inserted into the plug rear shield shell 60.

A second end of the opening facing the first end of the plug outer housing 40 is closed, and another opening is formed toward the bottom of the second end. The plug front shield shell 50 is inserted through an opening formed downstream of the second end of the plug outer housing 40.

The plug front shield shell 50 and the plug rear shield shell 60 are electrically connected, and may be formed of a copper alloy.

The lever 70 is rotatably coupled to an outer surface of the plug outer housing 40. The plug inner housing 20, the plug front shield shell 50 and the plug rear shield shell 60 are inserted through two openings of the plug outer housing 40. Then, the rotating lever 70 is rotated to contact the upper surface of the plug outer housing 40, so that the plug inner housing 20, the plug front shield shell 50, and the plug rear shield shell 60 are securely attached to the plug outer housing 40.

Meanwhile, the electric wire connector may be stably fixed to the tab terminal 10 from the left side of reference numeral 80 shown in fig. 2 by an assembly such as a wire seal, a wire holder, and a plug rear housing. That is, the wire connector may be inserted from the right side of fig. 2 through the opening of the rear housing of the plug, and may be stably fixed by the wire holder and the wire seal. The wire seal may be formed of silicone to insulate the sides of the wire connector from other components. Additionally, a locking device 75 may be provided at the end of the lever 70 to lock the lever 70 and the plug rear housing together when the lever 70 contacts the plug outer housing 40.

Meanwhile, components (e.g., a plug insulating cap, a plug inner seal, a plug sealing cap, and a tab terminal shown in fig. 2 and labeled as "55") may be fastened at an edge of an opening formed toward the bottom of the second end of the plug outer housing 40. The tab terminal may be formed of a copper alloy and may be electrically connected to the plug front shield shell 50. The plug inner seal may be formed of silicone to prevent current flowing between the plug front shield case and the tab terminal from leaking to the outside.

Fig. 3 is a diagram illustrating a tab terminal according to an exemplary embodiment of the present disclosure.

Referring to fig. 3, a perspective view (a), a front view (b), and a side view (c) of the tab terminal 10 are shown. The tab terminal 10 may be formed in a plate shape whose width is narrowed in a direction of being inserted into the plug inner housing 20. That is, when the tab terminal 10 is inserted into the plug inner housing 20, its width is formed to be narrowed in the insertion direction, so that the tab terminal 10 can be naturally mounted. In addition, the edge of the tab terminal 10 is formed in a chamfered shape, such as the shapes of reference numerals "11" and "12", so that the tab terminal 10 can be naturally inserted into the plug inner housing 20. In addition, the chamfered shape of the edge of the end portion 12 of the tab terminal 10 is inserted into the plug inner housing 20 and then contacts the front inner side of the plug inner housing 20 to serve as a stopper. Meanwhile, the edge of the other end of the tab terminal 10 of reference numeral "13" may also be formed in a chamfered shape. Therefore, when the tab terminal 10 is fastened to the terminal holder 30, the tab terminal 10 can be slid without being caught by the edge.

Fig. 4 is a view illustrating a plug inner housing according to an exemplary embodiment of the present disclosure.

Referring to fig. 4, a perspective view (a), a front view (b), and a side view (c) of the plug inner housing 20 are shown. In the header inner housing 20, an opening into which the tab terminal 10 is inserted is formed at a first end, a second end facing the opening into which the tab terminal 10 is inserted is closed, and an angled opening is formed below the second other end.

The plug inner housing 20 may be inserted and fixed inside the plug rear shield shell 60, and fixing grooves 21 and 22 are formed on an inner surface of an upper surface and an outer surface of a side surface of the plug inner housing 20, respectively. The fixing grooves 21 and 22 may be coupled with fixing protrusions 62 and 63 provided on an inner surface of the plug rear shield case 60. The fixing groove 22 and the fixing protrusion 62 of the plug rear shield shell 60 are coupled to each other, and the fixing groove 21 provided on the inner surface of the upper surface of the plug inner housing 20 is fastened to the fixing protrusion 63 of the plug rear shield shell 60. Accordingly, the plug inner housing 20 and the plug rear shield shell 60 can be fixed. The fixing groove 21 may be formed in a shape corresponding to that of the fixing protrusion 63 such that the fixing protrusion 63 performs an elastic restoring function of a lance (place). In addition, fixing grooves may be formed on the front outer surface 23 of the plug inner housing in a shape corresponding to the shape of the first lances 51 to be coupled with the first lances 51 of the plug front shield shell 50.

Fig. 5 is a view illustrating a terminal holder according to an exemplary embodiment of the present disclosure. Referring to fig. 5, a perspective view (a), a front view (b), and a side view (c) of the terminal holder 30 are shown.

The terminal holder 30 includes a terminal holder surface 31, a first hook 32, and a second hook 33. The first hook 32 is formed on the first side of the terminal holder surface 31, and the first hook 32 is fastened and fixed to the inside of the plug inner housing 20. In addition, a second hook 33 is formed on a second side facing the first side of the terminal holder surface 31. The second hook 33 is pressed together with the terminal holder surface 31 on the second hook 33 side by elasticity and then restored. Then, the tab terminal 10 slides over the second hook 33, and can be fastened and released between the plug inner housing 20 and the terminal holder 30. The first hook 32 and the second hook 33 are formed in a hook-shaped cross section to fix the terminal holder 30 so as not to be separated from the plug inner housing 20 after fastening.

The first hook 32 of the terminal holder 30 is fixed to the plug inner housing 20 in advance, and the second hook 33 is elastic when the tab terminal 10 is inserted into the plug inner housing 20. The tab terminal 10 may be fastened to the plug inner housing 20 by being pressed and then restored. The terminal holder surface 31 may be formed to have a thickness of the surface on the second hook 33 side larger than that of the surface on the first hook 32 side.

Meanwhile, a vertical gap prevention protrusion 34 protruding in a direction perpendicular to the terminal holder surface 31 may be provided at a central portion of the terminal holder 30. The vertical gap prevention protrusion 34 prevents a gap in the vertical direction while the terminal holder 30 is fastened to the inside of the plug inner housing 20. These vertical gap prevention protrusions 34 may be provided in pairs in a sectional shape facing each other.

In addition, a horizontal gap prevention protrusion 35 protruding in a direction parallel to the terminal holder surface 31 may be provided at a central portion of the terminal holder 30. The horizontal gap prevention protrusion 35 prevents a gap in the left-right direction while the terminal holder 30 is fastened to the inside of the plug inner housing 20.

The vertical gap preventing protrusion 34 and the horizontal gap preventing protrusion 35 may be integrally formed, and the vertical gap preventing protrusion 34 may be formed to protrude from the horizontal gap preventing protrusion 35. In addition, the vertical gap prevention protrusion 34, the horizontal gap prevention protrusion 35, and the terminal holder surface 31 may be integrally formed.

Fig. 6 is a view illustrating a state in which a tab terminal is fastened to an inner housing of a plug by a terminal holder according to an exemplary embodiment of the present disclosure, and fig. 7 is a view illustrating a process in which a tab terminal is fastened to an inner housing of a plug by a terminal holder according to an exemplary embodiment of the present disclosure.

Referring to fig. 7, as shown in (a), the terminal holder 30 is fastened to the plug inner housing 20 in advance. That is, the first hooks 32 of the terminal holder 30 are fastened and fixed in close contact with the internal structure of the plug inner housing 20. Further, the second hook 33 is spaced apart from the inner structure of the plug inner housing 20 by a predetermined distance so as to move in the inner and outer directions. When the tab terminal 10 is inserted into the plug inner housing 20, one end of the tab terminal 10 slides in while pushing the second hook 33 of the terminal holder 30. Therefore, as shown in (b), the second hook 33 is pressed toward the center of the plug inner housing 20 together with the terminal holder surface 31 by the elastic force. Thereafter, when the lug terminal 10 is pushed up to the front inner surface of the plug inner housing 20, the second hook 33 of the terminal holder 30 is restored to the outside of the plug inner housing 20 by a restoring force. In addition, as shown in (c), a section of the second hook 33 is fitted to the rear end surface of the tab terminal 10. Thus, the tab terminal 10 is firmly fastened and fixed to the plug inner housing 20 by the terminal holder 30. Through this process, as shown in fig. 6, a pair of lug terminals 10 connected to the electric wire connector are fastened and fixed to the plug inner housing 20.

Fig. 8 is a view illustrating a plug outer housing according to an exemplary embodiment of the present disclosure.

Referring to fig. 8, a perspective view (a), a front view (b), and a side view (c) of the plug outer housing 40 are shown. The plug outer housing 40 has an opening at one end into which the plug inner housing 20 and the plug rear shield shell 60 are inserted. In addition, the opposite end of the opening into which the plug inner housing 20 is inserted is closed, and an opening formed below the second end may be formed in an angled manner.

The plug outer housing 40 includes a rotation protrusion 42 protruding in a cylindrical shape such that the lever 70 is rotatably coupled to the outer surface. In addition, the plug outer housing 40 is provided with a locking protrusion 41 for engaging and fixing the lever 70 after the rotation of the upper surface. In addition, at an opening side end portion of one end of the plug outer housing 40, a coupling groove 43 (the rightmost member of reference numeral "80" in fig. 2) for coupling the plug outer housing 40 and the plug rear housing by fastening with a lance of the plug rear housing may be provided.

In addition, fixing grooves may be formed on the front inner surface of the plug outer housing 40 in a shape corresponding to the shape of the second lances 52 to be coupled with the second lances 52 of the plug front shield shell 50.

Fig. 9 is a view showing a plug front shield shell according to an exemplary embodiment of the present disclosure, and fig. 10 is a view showing a plug rear shield shell according to an exemplary embodiment of the present disclosure.

Referring to fig. 9, a perspective view (a), a front view (b), and a side view (c) of the plug front shield shell 50 are shown. In addition, referring to fig. 10, a perspective view (a), a front view (b), and a side view (c) of the plug rear shield shell 60 are shown.

As shown in fig. 9, the plug front shield shell 50 includes first lances 51 and second lances 52. The first lances 51 are coupled to an outer surface of the plug inner housing 20 to prevent separation from the plug inner housing 20. The first lances 51 are coupled to fixing grooves formed on the front outer surface 23 of the plug inner housing 20 such that the plug inner housing 20 and the plug front shield shell 50 are fixed to prevent separation. In addition, the second lances 52 are coupled to fixing grooves formed on a front inner surface of the plug outer housing 40 such that the plug outer housing 40 and the plug front shield shell 50 are fixed to prevent separation.

The upper edge of the plug front shield shell 50 may be formed in a chamfered shape for guiding the fastening of the plug outer housing 40 and the plug rear shield shell 60. Also, as shown in fig. 9, the upper edge of the plug front shield shell 50 may be formed in a cut and bent shape.

Meanwhile, at the plug front shield shell 50, there may be provided an inner ground portion 53 protruding to the inside of the plug front shield shell 50 to contact the plug rear shield shell 60 for grounding, and an outer ground portion 54 protruding to the outside of the plug front shield shell 50 to ground the outside.

As shown in fig. 10, the plug rear shield shell 60 may be formed in a shape whose width is narrowed in a direction of inserting the tab terminal 10 to correspond to the shape of the plug inner housing 20.

The plug rear shield shell 60 may include: an outer housing fixing protrusion 61 protruding outward from a side surface of the plug rear shield shell 60 to be fastened and fixed to an inner side of the plug outer housing 40; and an inner housing fixing projection 62 which protrudes inward and is fastened and fixed to the outside of the plug inner housing 20. Further, the plug rear shield shell 60 may include contacts 63, 64, and 65 disposed on a surface of the plug rear shield shell 60 and electrically connected to the plug front shield shell 50.

Similarly, according to the exemplary embodiments of the present disclosure, when assembling the connector, the terminal holder is pre-fastened to the inside of the connector housing, and when assembling the terminal, the locking claw of the terminal and the terminal holder are fastened to each other, and therefore, it is possible to enhance the terminal holding force and improve the contact reliability of the terminal.

While the present disclosure has been described in connection with exemplary embodiments presently considered to be practical, it is to be understood that the disclosure is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.