Power connector locking mechanism

Abstract

The present invention provides a locking structure for a power connector and a plug connector thereof, which allows the receptacle connector and plug connector to be detached with extremely small interference forces. [Solution] The locking structure of the power connector includes a receptacle connector 1 which includes an insulating base 11 and a plurality of conductive terminals 12, and has two horizontal latching parts 13 and a frame 131 on both sides of the insulating base, and a plug connector 2 which includes an insulating body 21 and a plurality of contact terminals 221. The joint 121 of the plurality of conductive terminals forms an electrical connection with the plurality of contact terminals. Positioning parts 22 are provided on both sides of the insulating body, and elastic engaging parts 232 of an elastic hook 23 are provided on the two positioning parts. The two elastic engaging parts are equipped with inclined locking parts 2322 that protrude outward. The elastic hook is located on the ceiling surface of the insulating body and is connected to a pull tab 24. The positioning part has a retraction space 222 on the inner wall surface of the insulating body to retract the suspension ends of the two elastic engaging parts inward when the pull tab is pulled.

Description

【Technical Field】 【0001】 The present invention relates to a locking structure of a power connector and its plug connector. In particular, when two latching portions of an insulating base in a receptacle connector and elastic hooks provided on two positioning portions of an insulating body in a plug connector are in a coupled state, stable latching and positioning are formed. When a user attempts to remove the plug connector coupled to the receptacle connector, by pulling the pull tab upward to make the elastic hooks bow-shaped and retracting the elastic engaging portions on both sides of the elastic hooks inward to change the angle of the latching portion that contacts and slides on the insulating base, the receptacle connector and the plug connector can be removed with an extremely small interference force. 【Background Art】 【0002】 With the rapid growth and maturity of the current electronics industry, numerous different 3C (Computer, Communication, Consumer Electronics) functional electronic products are being researched, developed, and manufactured according to different needs. In particular, the transformation speeds of computers, notebook computers, tablet PCs, and smartphones far exceed imagination, and the direction of updates is nothing but the further increase in the computing speed of processors, the communication speed of networks, and the further reduction in volume, thickness, length, and size. In addition to the miniaturization of the volume of electronic products, it is also required to install different interface connectors to adapt to more function expansions. 【0003】 In recent years, electrical connectors have been widely used in various electronic devices. However, in order to adapt to the trend towards lighter and thinner electronic devices, the volume and size of electrical connectors have continued to shrink. This has led to increased difficulty in processing and a weakening of structural strength. Cable-to-board connector assemblies are equipped with components such as board-side terminals, cable-side terminals, and insulating plastic bases. Currently, it is common for the components of electrical connectors to be joined together by assembly. However, as the size of electronic products continues to shrink, the space available for assembly between electronic products also shrinks, and consequently, the size of connectors also shrinks. This makes it increasingly difficult to assemble connectors in the available space, resulting in insufficient structural strength of the assembled connector and making it difficult to improve the speed and efficiency of assembly. 【0004】 Furthermore, in conventional operation scenarios, when a user attempts to remove a cable-side connector from a circuit board-side connector, the correct method is to pull the pull tab attached to the cable-side connector upwards. However, some users choose the inappropriate method of pulling the cable upwards from the cable-side connector, which increases the moment of action because the point of tension on the cable is far from the locking point of the cable-side connector. In this case, even though the cable-side connector can be removed with little force, an extremely large tensile force is applied to the locking point between the cable-side connector and the circuit board-side connector, making them prone to damage. The above issues require solutions from those skilled in the art. [Overview of the Initiative] [Problems that the invention aims to solve] 【0005】 Therefore, in light of the above-mentioned problems and shortcomings, the inventor collected relevant data and, through evaluation and consideration from various perspectives, designed and created a locking structure for a power connector and its plug connector. [Means for solving the problem] 【0006】 This invention primarily relates to a locking structure for a power connector. The structure includes a receptacle connector comprising an insulating base and a plurality of conductive terminals, wherein the insulating base is provided with two horizontal locking parts and a frame surrounding the outer wall of the insulating base, and a plug connector comprising an insulating body and a plurality of contact terminals. The joints of the plurality of conductive terminals form an electrical connection with the plurality of contact terminals. Positioning parts are provided on both sides of the insulating body, and elastic engagement parts of an elastic hook are provided on the two positioning parts. Furthermore, the two elastic engagement parts are provided with inclined locking parts that protrude outward. The elastic hook is located on the ceiling surface of the insulating body and is connected to a pull tab. Furthermore, the positioning parts have a retraction space on the inner wall surface of the insulating body to retract the suspension ends of the two elastic engagement parts inward when the pull tab is pulled. 【0007】 As described above, stable locking and positioning are formed when the two locking parts of the insulating base and the elastic hooks provided on the two positioning parts of the insulating body are engaged. On the other hand, when a user attempts to remove a plug connector connected to a receptacle connector, they can pull the pull tab upward to bend the elastic hook into an arc shape, causing the elastic engagement parts on both sides of the elastic hook to retract inward and change the angle of the locking part that contacts the insulating base to slide, thereby enabling the receptacle connector and plug connector to be removed with extremely small interference force. In addition, when the user pulls the pull tab upward to raise the plug connector, if the locking part of the elastic engagement contacts the horizontal locking part at an inclined angle, only point-like interference occurs between the inclined locking part and the horizontal locking part, allowing the plug connector to detach upward from the receptacle connector with minimal interference force. Furthermore, if a user removes a plug connector connected to a receptacle connector in an improper manner, the locking part of the elastic hook rotates from an inclined angle to an angle close to horizontal. Furthermore, when the locking portion of the elastic engagement portion, which is at a horizontal angle, comes into contact with the horizontal locking portion, a very large linear interference force is formed between the locking portions, making it difficult for the plug connector to detach from the receptacle connector upwards. 【0008】 The secondary objectives of this invention are as follows: The conductive terminal includes a joint portion located in an insertion groove of a joint space inside the insulating base, and a fixing portion and a welded portion formed above and below the joint portion, respectively. The fixing portion is inserted into a positioning hole in the ceiling surface of the insulating base and engaged and fixed. The welded portion is inserted into a welding hole provided in the circuit board and fixed by welding. 【0009】 Another object of the present invention is as follows: The latching portion has a frame surrounding the outer wall of the insulating base. The frame has a plurality of engaging portions formed upward, which are sheet-like and bent hook-like and fixed in a manner that can engage with latching grooves on both sides and the bottom of the insulating base. Furthermore, two continuously bent locking arms extend from both sides of the frame toward the joining space. Horizontal position regulating portions also protrude outward from the two locking arms. Furthermore, the frame has a plurality of fixing legs formed downward, which can be inserted into a plurality of fixing holes provided in advance in the circuit board. 【0010】 A further object of the present invention is as follows: Multiple cables are inserted into terminal grooves inside the insulating body. Furthermore, the front end of each cable is provided with the contact terminal. The contact portion of the contact terminal corresponds to an opening on the bottom side of the insulating body. An engaging piece extends from the contact portion toward the rear. Furthermore, the engaging piece enters into an engaging groove adjacent to the opening. A fixing piece extends from the engaging piece toward the rear for covering and clamping the cable. 【0011】 A further object of the present invention is as follows: The contact terminals positioned within the terminal grooves inside the insulating body can contact a plurality of metal contacts of a flexible circuit board provided on the ceiling surface of the insulating body to form an electrical connection. The insulating body is provided with a ground tab located away from the terminal grooves and adjacent to the contact terminals, which is connected to the metal contacts of the flexible circuit board. 【0012】 A further object of the present invention is as follows: The two inner wall surfaces of the positioning portion in the insulating body are provided with abutment portions that protrude inward and abut against the locking portion of the elastic hook. The retraction space is formed at the bottom of the two abutment portions. 【0013】 A further object of the present invention is as follows: The elastic hook has a plate-shaped elastic deformation portion, and the pull tab is attached to the elastic deformation portion. Both sides of the elastic deformation portion are bent downward to form elastic engagement portions. The suspension ends of the two elastic engagement portions have projections that extend on both sides and engage with the bottom side of the stop portion of the insulating body. The locking portions of the two elastic engagement portions have an inclined structure in which the front end is higher and the rear end is lower. [Brief explanation of the drawing] 【0014】 [Figure 1] Figure 1 is a perspective view of the power connector in the present invention in its connected state. [Figure 2] Figure 2 is a perspective view of the power connector in the separated state according to the present invention. [Figure 3] Figure 3 is an exploded perspective view of the power connector in this invention. [Figure 4] Figure 4 is an exploded perspective view of the power connector in this invention from a different angle. [Figure 5] Figure 5 is a side cross-sectional view of the power connector in the present invention in its connected state. [Figure 6A] Figure 6A is a first operational diagram showing the removal of the power connector in this invention. [Figure 6B] Figure 6B is a second diagram illustrating the operation of removing the power connector in this invention. [Figure 6C] Figure 6C is a third operational diagram illustrating the removal of the power connector in this invention. [Figure 6D] Figure 6D is a fourth operational diagram illustrating the removal of the power connector in this invention. [Figure 7A]Figure 7A is a side view of the power connector in the present invention before removing it by pulling the pull tab. [Figure 7B] Figure 7B is a first side view of the power connector in the present invention when removing it by pulling the pull tab. [Figure 7C] Figure 7C is a second side view of the power connector in the present invention when removing it by pulling the pull tab. [Figure 7D] Figure 7D is a third side view of the power connector in the present invention when removing it by pulling the pull tab. [Figure 8A] Figure 8A is a side view of the power connector in the present invention before removing it by pulling the cable. [Figure 8B] Figure 8B is a side view of the power connector in the present invention when removing it by pulling the cable. [Figure 9] Figure 9 is a perspective view of the combined state of another embodiment of the power connector in the present invention. [Figure 10] Figure 10 is a perspective view of the separated state of another embodiment of the power connector in the present invention. [Figure 11] Figure 11 is an exploded perspective view of another embodiment of the power connector in the present invention. [Figure 12] Figure 12 is an exploded perspective view of another embodiment of the power connector in the present invention from another angle. 【Mode for Carrying Out the Invention】 【0015】 Refer to FIGS. 1 to 5, which are perspective views of the combined state, perspective views of the separated state, exploded perspective views, exploded perspective views from another angle, and side cross-sectional views of the combined state of the power connector in the present invention. As is clear from the drawings, the locking structure of the power connector in the present invention mainly includes a receptacle connector 1 and a plug connector 2. The detailed structure and connection relationship are as follows. 【0016】 The receptacle connector 1 includes an insulating base 11 and a plurality of conductive terminals 12 inserted into the insulating base 11. The insulating base 11 is also provided with horizontal latching portions 13, and a frame 131 surrounding the outer wall of the insulating base 11 is provided between the two latching portions 13. 【0017】 The plug connector 2 includes an insulating body 21 and a plurality of contact terminals 221 positioned within the insulating body 21. The joint portion 121 of the conductive terminal 12 in the receptacle connector 1 can form an electrical connection with the contact terminals 221. Positioning portions 22 are provided on both sides of the insulating body 21. Elastic engaging portions 232, located at corresponding positions on the elastic hook 23, are coupled and positioned to the two positioning portions 22. Furthermore, the two elastic engaging portions 232 are provided with inclined locking portions 2322 that protrude outward. The elastic hook 23 is located on the ceiling surface of the insulating body 21 and a pull tab 24 is coupled to it. Furthermore, the positioning portion 22 has a retraction space 222 formed on the inner wall surface of the insulating body 21 to allow the suspension ends of the two elastic engaging portions 232 to retract inward when the pull tab 24 is pulled. 【0018】 The conductive terminal 12 described above includes a joint portion 121 located in an insertion groove 101 of a joining space 10 inside the insulating base 11, and a fixing portion 122 and a welded portion 123 formed above and below the joint portion 121, respectively. The fixing portion 122 is inserted into a positioning hole 111 on the ceiling surface of the insulating base 11 and engaged and fixed. The welded portion 123 is inserted into a welding hole 31 pre-provided in the circuit board 3 and fixed by welding. The structural design of the conductive terminal 12 inside the insulating base 11 allows for a stable and misaligned state when joining with the plug connector 2, thereby effectively reducing the probability of damage to the power connector. 【0019】 To form a stable structure between the insulating base 11 and the latching portion 13, the frame 131 of the latching portion 13 has a plurality of engagement portions 132 formed upward, which are sheet-like and bent hook-like in shape and fixed in engageable with the latching grooves 112 on both sides and the bottom of the insulating base 11. Furthermore, two continuously bent locking arms 133 extend from both sides of the frame 131 toward the joining space 10. In addition, horizontal position regulating portions 1331 protruding outward from the two locking arms 133 allow the locking arms 133 to elastically retract and reduce interference force when they come into contact with the locking portion 2322 of the elastic hook 23. Furthermore, the frame 131 has a plurality of fixing legs 134 formed downward, which can be inserted into a plurality of fixing holes 32 provided in advance in the circuit board 3. 【0020】 Multiple cables 224 are inserted into the terminal groove 210 inside the insulating body 21 described above. Furthermore, the front end of each cable 224 is provided with the contact terminal 221. The contact portion 2211 of the contact terminal 221 corresponds to the opening 225 on the bottom side of the insulating body 21. In addition, an engaging piece 2212 extends rearward from the contact portion 2211. Furthermore, the engaging piece 2212 enters into an engaging groove 226 adjacent to the opening 225. In addition, a fixing piece 2213 that covers and clamps the cable 224 extends rearward from the engaging piece 2212. 【0021】 The two inner wall surfaces of the positioning portion 22 in the insulating body 21 described above are provided with abutment portions 223 that protrude inward and abut against the locking portion 2322 of the elastic hook 23. Furthermore, the retraction space 222 is formed at the bottom of the two abutment portions 223. By designing the abutment portions 223 to be higher than the retraction space 222, the locking portion 2322 of the elastic hook 23 can have space to retract inward. Moreover, the locking portion 2322 has an inclined structure in which the front end is higher and the rear end is lower, and a structure in which it protrudes horizontally and has a small front end and a large rear end. As a result, when removing, it forms a small contact area with the horizontal position restricting portion 1331 of the hooking portion 13, so that the receptacle connector 1 and the plug connector 2 can be removed with an extremely small interference force. The elastic hook 23 has a plate-shaped elastic deformable portion 231, and the pull tab 24 is attached to the center of the elastic deformable portion 231. Both sides of the elastic deformable portion 231 are bent downward to form elastic engagement portions 232. The suspension ends of the two elastic engagement portions 232 have projections 2321 that extend on both sides and engage with the bottom side of the stop portion 223 of the insulating body 21. By providing the projections 2321, it is possible to prevent the elastic hook 23 from detaching from the insulating body 21 when it is pulled upward. 【0022】 As shown in Figures 3 and 4 above, the present invention discloses a plug connector that includes the following: 【0023】 The plug connector includes an insulating body 21 and a plurality of contact terminals 221 positioned within the insulating body 21. Positioning portions 22 are provided on both sides of the insulating body 21. 【0024】 Two elastic engagement portions 232 of the elastic hook 23 are connected to and positioned at the two positioning portions 22. Furthermore, the two elastic engagement portions 232 are provided with inclined locking portions 2322 that protrude outward. The elastic hook 23 is located on the ceiling surface of the insulating body 21 and a pull tab 24 is connected to it. In addition, a retraction space 222 is formed in the inner wall surface of the insulating body 21 of the positioning portion 22 to retract the suspension ends of the two elastic engagement portions 232 inward when the pull tab 24 is pulled. 【0025】 Refer to Figures 6A to 6D, which show the first, second, third, and fourth operation diagrams for removing the power connector in this invention. When the receptacle connector 1 and the plug connector 2 are coupled, the position regulating portion 1331 of the latching portion 13 and the locking portion 2322 located on the elastic hook 23 form a large area contact, thereby forming a stable latching structure between the receptacle connector 1 and the plug connector 2 (shown in Figure 6A). On the other hand, when a user tries to remove the plug connector 2 coupled to the receptacle connector 1, they pull the pull tab 24 upward, causing the elastic deformation portion 231 of the elastic hook 23 to bend into an arc. Because interference occurs between the insulating base 11 and the insulating body 21, the elastic engaging portions 232 on both sides of the elastic hook 23 are retracted inward into the retraction space 222, and the projections 2321 at the suspension ends of the elastic engaging portions 232 are raised to contact the bottom side of the abutment portion 223 of the insulating body 21. This changes the angle and interference force of the position restricting portion 1331 of the latching portion 13 that contacts the insulating base 11 to slide (as shown in Figure 6B). In the process of sliding the plug connector 2 upward, the elastic engaging portion 232 of the elastic hook 23, whose angle has changed, pushes up the latching portion 13 with a very small force and elastically retracts backward (as shown in Figure 6C). Then, as the plug connector 2 slides upward and the elastic engaging portion 232 of the elastic hook 23 exceeds the position restricting portion 1331 of the latching portion 13, there is no interference force whatsoever between the receptacle connector 1 and the plug connector 2, and the plug connector 2 can be smoothly detached from the receptacle connector 1 upward. 【0026】 Refer to Figures 7A to 7D, which are side views of the power connector in this invention before removal by pulling the pull tab, and the first, second, and third side views during removal. The locking portion 2322 of the elastic hook 23 coupled to the plug connector 2 in the figures has a sloping structure in which the part away from the cable 224 is higher and the part close to the cable 224 is lower. In addition, the position regulating portion 1331 of the hooking portion 13 coupled to the receptacle connector 1 is designed to be horizontal. When the user pulls the pull tab 24 upward to remove the plug connector 2 coupled to the receptacle connector 1, the elastic deformation portion 231 of the elastic hook 23 located on the plug connector 2 becomes bow-shaped. Furthermore, the elastic engagement portions 232 on both sides of the elastic hook 23 retract inward into the retraction space 222, and the projection 2321 at the suspension end of the elastic engagement portion 232 rises and contacts the bottom side of the abutment portion 223 of the insulating body 21. As the plug connector 2 rises, when the locking portion 2322 of the elastic engagement portion 232 contacts the position regulating portion 1331 of the horizontal engagement portion 13 at an inclined angle, only point-like interference occurs between the inclined locking portion 2322 and the horizontal position regulating portion 1331. Therefore, the plug connector 2 can detach upward from the receptacle connector 1 with minimal interference force. 【0027】 Refer to Figures 8A to 8B, which are side views of the power connector in this invention before and after the cable is pulled to remove it. If a user pulls the cable 224 in an improper manner to remove the plug connector 2 coupled to the receptacle connector 1, torque is generated at the point of tension on the cable 224, causing the plug connector 2 to rotate upward with its front end as the pivot point. Then, the locking portion 2322 of the elastic hook 23 rotates from an inclined angle to an angle close to horizontal, and when the locking portion 2322 of the elastic engagement portion 232, which is now at a horizontal angle, comes into contact with the position restricting portion 1331 of the horizontally oriented engagement portion 13, an extremely large linear interference force is formed between the locking portion 2322 and the position restricting portion 1331, making it difficult for the plug connector 2 to detach upward from the receptacle connector 1. Furthermore, if the user forcibly continues to pull the cable 224 upward, the position regulating portion 1331 of the latching portion 13 can be retracted significantly to the rear, allowing the elastic engaging portion 232 of the elastic hook 23 to pass through. This allows the plug connector 2 to detach upward from the receptacle connector 1 without causing any damage. 【0028】 Refer to Figures 9 to 12 for perspective views of the coupled state, separated state, exploded perspective view, and exploded perspective view from a different angle of another embodiment of the power connector in this invention. Compared with the first embodiment of the power connector disclosed in Figures 1 to 8B, the plug connector 2 in the second embodiment of the power connector disclosed in Figures 9 to 12 does not have multiple cables 224, and multiple internal contact terminals 221 form an electrical connection with the flexible circuit board 4 (FPC) or flexible flat cable (FFC). Note that the flexible circuit board 4 or flexible flat cable also has a metal circuit or core wire inside, which can be considered equivalent to the cable 224. The rest is substantially the same as the structure disclosed in the first embodiment, so it will not be described in detail again here. The plug connector 2 in the second embodiment includes the following. 【0029】 The contact terminal 221, positioned within the terminal groove 210 inside the insulating body 21, can contact a plurality of metal contacts 41 of the flexible circuit board 4 provided on the ceiling surface of the insulating body 21 to form an electrical connection. The insulating body 21 is provided with a ground tab 227 at a location separated from the terminal groove 210 and adjacent to the contact terminal 221, which is connected to the metal contacts of the flexible circuit board. The ground tab 227, together with the frame 131 of the latching portion 13, can further form a shield for shielding electromagnetic waves generated when the conductive terminal 12 and the contact terminal 221 transmit power. 【0030】 The main features of this invention are as follows: When the two latching parts 13 of the insulating base 11 of the receptacle connector 1 and the elastic hooks 23 provided on the two positioning parts 22 of the insulating body 21 of the plug connector 2 are coupled, stable latching and positioning are formed. On the other hand, when a user wants to remove the plug connector 2 coupled to the receptacle connector 1, they can pull the pull tab 24 upward to make the elastic hook 23 curved, and retract the elastic engaging parts 232 on both sides of the elastic hook 23 inward, thereby changing the angle of the latching parts 13 that contact the insulating base 11 so as to slide against it, making it possible to remove the receptacle connector 1 and the plug connector 2 with extremely small interference force. In addition, when the user pulls the pull tab 24 upward to raise the plug connector 2, if the locking portion 2322 of the elastic engagement portion 232 contacts the horizontal locking portion 13 at an inclined angle, only a point-like interference occurs between the inclined locking portion 2322 and the horizontal locking portion 13, allowing the plug connector 2 to detach upward from the receptacle connector 1 with minimal interference force. Furthermore, if the user removes the plug connector 2 coupled to the receptacle connector 1 in an improper manner, the locking portion 2322 of the elastic hook 23 rotates from an inclined angle to an angle close to horizontal. When the locking portion 2322 of the elastic engagement portion 232, now at a horizontal angle, contacts the horizontal locking portion 13, a very large linear interference force is formed between the locking portion 2322 and the locking portion 13, making it difficult for the plug connector 2 to detach upward from the receptacle connector 1. 【0031】 The above are merely preferred embodiments of the present invention, and the scope of the rights of the present invention is not limited thereto. Therefore, simple supplements and equivalent structural modifications made using the contents of the specification and drawings of the present invention are all similarly included within the scope of the rights of the present invention. 【0032】 In summary, the locking structure of the power connector and its plug connector described in this invention can reliably achieve their intended effects and purposes during use. Therefore, this invention is truly a highly practical invention and meets the requirements for filing a utility model application; as such, we are filing an application in accordance with the law. In order to guarantee the inventor's creative efforts, we earnestly request that the examiner grant permission for this application as soon as possible. If you have any questions or concerns, please let us know in writing, and the inventor will do his utmost to cooperate. We express our deepest gratitude hereby. [Explanation of symbols] 【0033】 1 Receptacle Connector 10 Joint space 101 Insertion groove 11 Insulating base 111 Positioning holes 112 Latch groove 12 Conductive terminals 121 Joint 122 Fixed part 123 Welded section 13 Latch part 131 frames 132 Connecting part 133 Lock Arm 1331 Position regulation part 134 Fixed leg 2 Plug Connectors 21 Insulating body 210 Terminal groove 22 Positioning section 221 Contact terminal 2211 Contact area 2212 Engaging piece 2213 Fixed piece 222 Evacuation Space 223 Stop part 224 Cable 225 Aperture 226 Engagement groove 227 Grand Tab 23 Elastic Hooks 231 Elastic deformation part 232 Elastic engagement section 2321 Protrusion 2322 Locking part 24 pull tabs 3 circuit board 31 Welding holes 32 Fixing hole 4 Flexible circuit board 41 Metal contacts

Claims

[Claim 1] A receptacle connector comprising an insulating base and a plurality of conductive terminals inserted into the insulating base, wherein the insulating base is provided with two horizontal latching portions, and a frame surrounding the outer wall of the insulating base is provided between the two latching portions, The receptacle connector includes an insulating body and a plurality of contact terminals positioned within the insulating body, wherein the joint of the conductive terminal in the receptacle connector is capable of forming an electrical connection with the contact terminal, positioning portions are provided on both sides of the insulating body, elastic engaging portions at corresponding positions of elastic hooks are coupled and positioned to the two positioning portions, and the two elastic engaging portions are provided with inclined locking portions that protrude outward. The elastic hook is located on the ceiling surface of the insulating body and is connected to a pull tab, and the positioning portion includes a plug connector in which a retraction space is formed on the inner wall surface of the insulating body to allow the suspension ends of the two elastic engaging portions to retract inward when the pull tab is pulled, A locking mechanism for the power connector, including the locking mechanism. [Claim 2] It includes an insulating body and a plurality of contact terminals positioned within the insulating body, and positioning portions are provided on both sides of the insulating body. A locking structure for a power connector in which two elastic hooks are connected and positioned to two positioning parts, and the two elastic hooks are provided with inclined locking parts that protrude outward, the elastic hooks are located on the ceiling surface of the insulating body and are connected to a pull tab, and the positioning parts have a retraction space formed on the inner wall surface of the insulating body to retract the suspension ends of the two elastic hooks inward when the pull tab is pulled. [Claim 3] A locking structure for a power connector according to claim 1 or 2, wherein a plurality of cables are inserted into terminal grooves inside the insulating body, and the front ends of each cable are provided with contact terminals, the contact portion of the contact terminals corresponds to an opening on the bottom side of the insulating body, an engaging piece extends from the contact portion toward the rear, the engaging piece enters an engaging groove adjacent to the opening, and a fixing piece extends toward the rear from the engaging piece for covering and clamping the cable. [Claim 4] The locking structure for a power connector according to claim 1 or 2, wherein the contact terminals positioned within the terminal grooves inside the insulating body are capable of forming an electrical connection by contacting a plurality of metal contacts of a flexible circuit board provided on the ceiling surface of the insulating body, and the insulating body is provided with a ground tab at a location separated from the terminal grooves and adjacent to the contact terminals, which is connected to the metal contacts of the flexible circuit board. [Claim 5] The locking structure for a power connector according to claim 1 or 2, wherein the two inner wall surfaces of the positioning portion in the insulating body are provided with abutment portions that protrude inward and abut against the locking portion of the elastic hook, and the retraction space is formed at the bottom of the two abutment portions. [Claim 6] The locking structure for a power connector according to claim 1 or 2, wherein the elastic hook has a plate-shaped elastic deformable portion, the pull tab is attached to the elastic deformable portion, both sides of the elastic deformable portion are bent downward to form elastic engagement portions, the suspension ends of the two elastic engagement portions have projections that extend on both sides and engage with the bottom side of the stop portion of the insulating body, and the locking portions of the two elastic engagement portions have an inclined structure in which the front end is higher and the rear end is lower, and a structure that protrudes horizontally and has a smaller front end and a larger rear end.

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