Locking structure and locking method of wire harness terminal port

Abstract

The invention discloses a locking structure and a locking method of a wire harness terminal port, which are used for being matched with a wire harness terminal and a port of a connector so as to realize the switching of a locking state and an unlocking state of the wire harness terminal by the port. One end of the main rod is inserted into the sleeve in a limiting manner, and the other end of the main rod penetrates through the connected wire harness terminal and the shell of the port; two supporting rods are connected outside the sleeve and are respectively connected with a flat rod through a ball connecting piece; the sleeve is connected with the two flat rods through a three-rod ball supporting connecting piece, and the other end of each flat rod is provided with a lock hook so as to be connected with a wire harness terminal through the two lock hooks; a plurality of convex teeth are arranged on the periphery of the main rod, a limiting structure matched with the convex teeth is formed in the sleeve, and the matching positions of the convex teeth and the limiting structure are adjusted by rotating the telescopic main rod, so that the locking state and the unlocking state of the wiring harness terminal and the port are adjusted; the assembly and disassembly efficiency can be improved, the assembly stability of the wire harness terminal is improved, and the protection capability of the wire harness terminal can be enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of new energy wiring harnesses, in particular to a locking structure for a wiring harness terminal port. Background Art

[0002] Electric vehicles shake frequently when driving. When the road is bumpy, the shaking frequency of the port harness terminal will increase. The interface jitter will cause the signal to be disconnected. The main reasons for the loosening of the harness that affect the normal driving of the vehicle include:

[0003] Vibration force: When the vehicle is running, the vibration generated will cause the wiring harness terminals and ports to loosen. The wiring harness terminals and ports are prone to loosening due to long-term impact and vibration from the road.

[0004] Temperature changes: In high and low temperature environments, the wiring harness terminals and ports will expand and contract due to heat, affecting the tightness and causing the ports to loosen.

[0005] Too many plugging and unplugging times: Frequent plugging and unplugging operations will loosen the connection between the port and the wiring harness terminal.

[0006] Especially during maintenance, improper plugging and unplugging operations or excessive use of certain wiring harness terminals can cause connections to become loose.

[0007] Environmental factors: Environmental factors such as high temperature and humidity can also affect the connection stability of the wiring harness terminals, causing the ports to loosen.

[0008] Design issue: The gap between the data cable and the charging port will also cause slight shaking when plugging and unplugging, which may affect usage after long-term use.

[0009] Foreign matter influence: dust, fiber and other foreign matter in the interface will affect the connection and cause the port to loosen. Quality problem: quality problems of the harness terminal itself, such as material aging or manufacturing defects, can also cause the port to loosen.

[0010] At present, in order to prevent the port harness terminal from shaking and connection stability problems caused by other factors, a fixing device for the port harness terminal is provided. However, the setting of the fixing device makes it difficult to disassemble the port harness terminal during vehicle maintenance, and it is even easy to be damaged during disassembly. The port terminal connection is easy to loosen, resulting in line failure, and there is a probability that it will fall directly while driving. Summary of the invention

[0011] In order to solve the above technical problems, the purpose of the present invention is to provide a locking structure and locking method for a wiring harness terminal port. The locking structure is easy to disassemble and can also strengthen the locking of the wiring harness terminal and the port, thereby increasing the stability and durability of the wiring harness terminal and the port under bumpy, frequent and severe shaking conditions.

[0012] The present invention solves the above problems through the following technical solutions:

[0013] A locking structure for a wiring harness terminal port, which is used to cooperate with the wiring harness terminal and the port of the connector to realize the conversion of the port to the locked state and the unlocked state of the wiring harness terminal; it includes: a main rod, a flat rod, a support rod, a sleeve, a three-rod ball support connector and a lock hook; one end of the main rod is limitedly inserted in the sleeve, and the other end passes through the shell of the connected wiring harness terminal and the port, so as to drive the sleeve to move by controlling the other end of the main rod; two support rods are connected to the outside of the sleeve in back to back relation, and the other ends of the support rods are respectively connected to the flat rods through ball connectors; the sleeve is connected to the two flat rods through the three-rod ball support connector; the two flat rods are each provided with a lock hook at one end away from each other, so as to be connected to the wiring harness terminal through the two lock hooks; a plurality of convex teeth are formed on the outer circumference of the middle part of the main rod A limiting structure that matches the convex tooth is formed in the sleeve, and the matching position of the convex tooth and the limiting structure is adjusted by rotating the telescopic main rod to realize the locking state and unlocking state adjustment of the wiring harness terminal and the port; the limiting structure includes: an annular groove and a plurality of concave tooth grooves arranged axially, the annular groove limits the axial direction of the convex tooth, and the concave tooth groove limits the radial direction of the convex tooth; in the locked state, the convex tooth is located in the annular groove, the two support rods and the two flat rods are triangular, and the locking hook locks the wiring harness terminal in the port; in the unlocked state, the convex tooth is located in the concave tooth groove, the two support rods and the two flat rods are respectively "V"-shaped, and the locking hook unlocks the wiring harness terminal in the port, and the wiring harness terminal can be separated from the port at this time.

[0014] As a further improvement, the concave tooth groove is arranged on a side of the annular groove away from the three-bar ball support connector.

[0015] As a further improvement, the locking structure is further provided with a plurality of spring components;

[0016] The spring component includes: a first coil spring, a second coil spring and a third coil spring, wherein the first coil spring is arranged in one end where the sleeve is connected to the three-rod ball support connector, and is used to support the main rod inserted in the sleeve; the second coil spring and the third coil spring are respectively arranged at the connection between the two flat rods and the locking hook, so that the locking hook has a rebound force to move toward the flat rod.

[0017] As a further improvement, the first coil spring is connected to the sleeve.

[0018] As a further improvement, a short double-ear support is formed at the far end of the flat rod, and a cylindrical space is set for the locking hook relative to the short double-ear support. The short double-ear support is limited in the cylindrical space, and the second coil spring and the third coil spring are respectively limited outside the short double-ear support of the flat rod, so that the short double-ear support and the cylindrical space compress the second coil spring and the third coil spring by stretching the proximal ends of the two flat rods, so that the locking hook has a certain amount of movement.

[0019] As a further improvement, two connection points are provided on both sides of the sleeve for movably connecting with the support rod.

[0020] As a further improvement, the opening of the locking hook faces one side of the main rod.

[0021] As a further improvement, the shell is a double-layer structure, the outer layer is used for dust and water resistance; the inner layer is used for connecting the locking hook.

[0022] At the same time, the present invention also solves the above problems through the following technical solutions:

[0023] A method for locking a wiring harness terminal port is implemented using the locking structure of the wiring harness terminal port as described above. The locking method comprises the following steps:

[0024] Inserting the wiring harness terminal: When the wiring harness terminal is assembled with the port and the wiring harness terminal is inserted into the port, the main rod knob of the main rod is pushed to make the convex teeth enter the annular groove in the sleeve, and the main rod knob is rotated at a certain angle to misalign the convex teeth with the concave tooth groove, so that the convex teeth of the main rod are stuck in the annular groove of the sleeve, and the main rod is supported by the spring component to insert one end of the main rod into the sleeve, so that the main rod reaches a stable state; at the same time, the main rod drives the support rod to move through the sleeve, so that the support rod and the flat rod are stretched together to reach a fixed stable state; and while the flat rod moves, the lock hook is pushed by the flat rod and the spring component in the flat rod to connect with the wiring harness terminal hook in the middle of the shell, completing the inlay fixation, and at this time the port and the wiring harness terminal are in a locked state;

[0025] Removing the wiring harness terminal: When the wiring harness terminal and the port need to be separated, rotate the main rod at a certain angle to make the convex teeth correspond to the concave tooth grooves, and move the main rod back to make the convex teeth withdraw from the annular groove, so that the convex teeth of the main rod are engaged with the concave tooth grooves; at the same time, the main rod drives the support rod and the flat rod to move together through the sleeve, and the two flat rods gradually shrink under the joint action of the support rod and the sleeve, so that the two support rods and the two flat rods are respectively in a "V" shape, so that the locking hook releases the wiring harness terminal. At this time, the port and the wiring harness terminal are in a locked state, and the wiring harness terminal can be directly pulled out to achieve removal.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] (1) The present invention can improve the efficiency of assembly and disassembly: because only the main rod knob of the main rod needs to be operated, the wiring harness terminal can be directly assembled and disassembled. When the vehicle is under maintenance, it may be necessary to perform a continuity test on the wiring harness, so it is necessary to separate the wiring harness terminal from the port for continuity test. It is also easy to install after maintenance and can be directly installed during installation, thereby optimizing the assembly and disassembly process and greatly improving the efficiency of maintenance work.

[0028] (2) The present invention can improve the stability of the wiring harness terminal assembly: because the vehicle will shake to varying degrees when driving on different road conditions, and because the vehicle will inevitably have a certain vibration force during driving that will vibrate the connection between the wiring harness terminal and the port, the port and the wiring harness terminal will be separated due to the vibration. This device optimizes the locking structure set in the shell, thereby strengthening the connection between the wiring harness terminal and the port.

[0029] (3) The present invention can enhance the protection capability of the wiring harness terminal: when the lock hook is fixed, the shell is set to a double-layer structure, so that the shell enhances the dust and water resistance of the terminal in terms of protection, and enhances the protection capability of the wiring harness terminal in terms of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a locking structure of a wiring harness terminal port of the present invention;

[0031] Figure 2 It is a schematic diagram of the cooperation between a locking structure of a wiring harness terminal port and a housing of the present invention;

[0032] Figure 3 It is a schematic diagram of the connection part between the flat rod and the lock hook of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the sleeve of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the main rod of the present invention.

[0035] Figure numerals: 1. main rod; 11. convex teeth; 2. flat rod; 21. short support with two ears; 3. support rod; 4. sleeve; 41. annular groove; 42. connection point; 43. concave tooth groove; 5. three-rod ball support connector; 6. locking hook; 61. cylindrical space; 7. spring component; 8. shell. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0037] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0041] The following will be combined Figure 1-5 , a locking structure and locking method of a wiring harness terminal port involved in an embodiment of the present application are described in detail. It should be noted that the following embodiments are only used to explain the present application and do not constitute a limitation on the present application.

[0042] Example:

[0043] Combined with Figure 1-5 As shown, a locking structure of a wiring harness terminal port is used to cooperate with the wiring harness terminal and the port of the connector to realize the conversion of the locking state and the unlocking state of the port to the wiring harness terminal; it includes: a main rod 1, a flat rod 2, a support rod 3, a sleeve 4, a three-rod ball support connector 5 and a lock hook 6; one end of the main rod 1 is limitedly inserted in the sleeve 4, and the other end penetrates the housing 8 of the connected wiring harness terminal and the port, so as to drive the sleeve 4 to move by controlling the other end of the main rod 1; two support rods 3 are connected to the sleeve 4 in back to back, and the other ends of the support rods 3 are respectively connected to the flat rod 2 through ball connectors; the sleeve 4 is connected to the two flat rods 2 through the three-rod ball support connector 5; the two flat rods 2 are each provided with a lock hook 6 at one end away from each other, so as to be connected to the wiring harness terminal through the two lock hooks 6;

[0044] A plurality of protruding teeth 11 are formed on the outer circumference of the middle part of the main rod, and a limiting structure matched with the protruding teeth 11 is formed in the sleeve 4. By rotating the telescopic main rod 1 to adjust the matching position of the protruding teeth 11 and the limiting structure, the locking state and unlocking state of the wiring harness terminal and the port can be adjusted;

[0045] The limiting structure includes: an annular groove 41 and a plurality of concave tooth grooves 43 arranged axially, the annular groove 41 limits the axial direction of the convex tooth 11, and the concave tooth grooves 43 limit the radial direction of the convex tooth 11; in the locked state, the convex tooth 11 is located in the annular groove 41, the two support rods 3 and the two flat rods 2 are triangular, and the locking hook locks the wiring harness terminal in the port; in the unlocked state, the convex tooth 11 is located in the concave tooth groove 43, the two support rods 3 and the two flat rods 2 are respectively "V" shaped, and the locking hook unlocks the wiring harness terminal in the port, and the wiring harness terminal can be separated from the port at this time.

[0046] In this embodiment, the opening of the lock hook 6 faces one side of the main rod. The concave tooth groove 43 is arranged on the side of the annular groove 41 away from the three-rod ball support connector 5. Three spring components 7 are provided, including: a first coil spring, a second coil spring and a third coil spring, wherein the first coil spring is arranged in the end of the sleeve 4 connected to the three-rod ball support connector 5, and is used to support the main rod 1 inserted in the sleeve 4, so that the main rod 1 is close to the end of the three-rod ball support connector 5 and away from the three-rod ball support connector 5; the second coil spring and the third coil spring are both arranged at the connection between the flat rod 2 and the lock hook 6, so as to support the lock hook 6 and connect it to the flat rod 2, so that the lock hook has a rebound force to move toward the flat rod 2. Specifically, the first coil spring is connected to the top end of the sleeve 4, that is, one end close to the three-rod ball support connector 5; a double-ear short support 21 is formed at the distal end of the flat rod 2, that is, one end away from the three-rod ball support connector 5, and the lock hook 6 is provided with a cylindrical space 61 relative to the double-ear short support 21, and the double-ear short support 21 is limitedly set in the cylindrical space 61, and the second coil spring and the third coil spring are respectively limitedly set outside the double-ear short support 21 of the flat rod 2, and by stretching the proximal ends of the two flat rods 2, that is, one end close to the three-rod ball support connector 5, the double-ear short support 21 and the cylindrical space 61 compress the second coil spring and the third coil spring, so that the lock hook 6 has a certain amount of movement.

[0047] In a specific embodiment, the main rod 1: the main rod passes through the sleeve 4 and is limitedly set in the sleeve 4, mainly to stretch the sleeve 4 and switch it, fix the lock in the locked state, and disassemble the port after the locked state, making it easier to disassemble, and convenient to operate when performing other operations on the wiring harness. One end of the main rod has the ability to switch and rotate, and a plurality of convex teeth 11 are formed around the middle outer circumference of the main rod, and the plurality of convex teeth 11 are nested with the annular groove 41 and the concave tooth groove 43 corresponding to the sleeve;

[0048] Flat rod 2: The flat rod plays a direct supporting role in locking the port in the locked state, so that the port remains stationary in the locked state. In this embodiment, two flat rods are required, and the two flat rods and the sleeve 4 are connected by a three-rod ball support connector 5. The flat rod 2 is connected to the sleeve 4 so that it can move with two degrees of freedom; at the same time, the flat rod 2 is also connected and supported with the support rod 3 using a ball connector, so that the support rod 3 can rotate relative to the flat rod 2 in any direction at the constraint point of the flat rod 2. The support rod 3 has three degrees of rotational freedom, so that the structural connection movement of the support rod 3 and the flat rod 2 is continuous, and the invention can achieve the intended effect when performing locking and releasing activities.

[0049] Support rod 3: The support rod is mainly used when the port is in the locked state. The flat rod 2 supports the locking hook 6, and the support rod 3 supports the flat rod 2, so that the support of the flat rod 2 in the locked state is strong and bearable, and the support in the stressed state is effective, and the stress strength in the locked state can be achieved; when the whole vehicle shakes frequently, it can reach a stable state and lock the port. At the same time, it has a connecting effect on the sleeve 4 and the flat rod 2, and can assist the sleeve 4 and the support rod 3 to shrink and support activities, achieving an indispensable component for a continuous effect.

[0050] Sleeve 4: The sleeve is the main movable and supporting part that can achieve the locking and contraction states. Two connection points 42 are set on both sides of the sleeve 4, which are the parts that connect the support rod 3 for movable operation; the sleeve 4 is fitted on the main rod 1, and there will be a round of convex teeth 11 in the middle of the main rod 1 to cooperate with the annular groove 41 of the sleeve to achieve the operation of the main rod 1 and the sleeve 4, and drive the sleeve 4 during the process of the main rod 1 performing the switch contraction support. When the port needs to reach the locked state, it is necessary to push the main rod 1 so that the main rod 1 exerts force on the sleeve 4, and then the sleeve 4 is subjected to force, and the sleeve 4 moves to push the three-rod ball support connector 5 to open the two flat rods 2; while the sleeve moves, it drives the support rod 3 to move, and the support rod 3 and the three-rod ball support connector 5 push the flat rod 2 to move. At this time, when the flat rod support is fully opened, the main rod 1 is twisted to rotate 45°, and a layer of concave tooth grooves 43 is left under the annular groove 41 of the sleeve to embed the main rod 1 after rotating 45°, and clamp the main rod, so as to fix the locked state in the structural rod part and support the locked state. When retracting and pulling out the port, it is necessary to withdraw the main rod 1 a little, that is, withdraw the convex teeth 11 of the main rod 1 from the annular groove 41 in the sleeve, turn the main rod 1 in the opposite direction by 45 degrees, let the main rod 1 return to the original state, then hold the main rod knob at the end of the main rod tightly, pull the main rod 1 out a section, and at the same time, it can also drive the sleeve 4 to retract. While driving the sleeve 4, the sleeve 4 drives the support rod 3 and the three-rod ball support connector 5 to move in the direction of the end main rod knob. At the same time, the three-rod ball support connector 5 drives the flat rod 2 at both ends to move, and the flat rod then moves, so that the whole mechanism operates continuously. In the space where the sleeve 4 contacts the top of the main rod 1, there is also a first coil spring connected to the sleeve separately. When the whole mechanism is stretched out and fixed, the first coil spring will support and stabilize the main rod to achieve a more stable structural support, so that the port lock is more stable when the car is shaking and bumping, so as to achieve the locking of the port and the wiring harness to stabilize the current and signal transmission.

[0051] Three-rod ball support connector 5: The three-rod ball support connector connects the main rod and the two horizontal rods respectively, so that the main rod and the two horizontal rods can achieve two degrees of freedom. The sleeve 4 and the support rod 3 and the horizontal rod 2 and the sleeve 4 also use this kind of ball connection method, but the ball connection mechanism between the sleeve and the support frame is not independent, it is integrated with the sleeve, in the lower part of the sleeve; the connection method of the horizontal rod 2 and the sleeve 4 is the same installation method. The ball connection of these two structures exists on the support rod and can be directly connected to the horizontal rod and used directly.

[0052] Spring component 7: There are three spring components in this mechanism, one is a first coil spring already existing inside the sleeve, and the others are the first coil spring and the first coil spring existing at the connection between the lock hook 6 and the flat rod 2. One end is connected to the flat rod and the other end is connected to the lock hook 6. It can exist inside the movable mechanism between the flat rod 2 and the lock hook, or outside the movable mechanism connecting the flat rod and the lock hook. It mainly allows the lock hook to have the ability to rebound, so that the lock hook is active during installation and is easier to install.

[0053] Lock hook 6: The lock hook is a core component of this structure and the sleeve. Its function is to hook the outer wall and move flexibly to achieve the locking ability. The connection between the lock hook 6 and the flat rod 2 is nested. The lock hook has the ability to move while being assembled and disassembled at the port, but stability is required in the locked state to ensure that the state of the structure does not change. Therefore, a certain space is required at the connection between the lock hook 6 and the flat rod 2. A columnar space 61 is provided on the lock hook. At the same time, the flat rod 2 has a short double-ear support 21 that can move with two degrees of freedom in the columnar space 61, so as to achieve the activity space between the lock hook 6 and the flat rod 2. At the same time, the lock hook is a hook type, and should have the function of hooking and locking the shell. Therefore, the final contact locking of the bent hook type can hook the shell. When the structure is pulled apart and supported, the lock hook can be fixed to the shell. When shrinking and dismantling, because of the flexible activity given by the spring component, when the bracket begins to shrink, the structural component relaxes and the spring component can also move. In this way, the lock hook withdraws from the shell to achieve the effect of direct dismantling, and the wiring harness terminal can be pulled out directly. Considering that the terminal needs to be waterproof and dustproof, the shell needs to be double-layered. The outer layer is dustproof and waterproof, and the inner layer is for stable connection and fixation of the lock hook. Because it is a double shell, the protection of the terminal is also enhanced, and the impact of the environment on the terminal is also reduced.

[0054] Working principle: The locking structure is mainly assembled by a main rod, a sleeve, two flat rods, a three-rod ball support connector, three coil springs and two lock hooks.

[0055] Insert the wiring harness terminal: When the wiring harness terminal is assembled with the port, the wiring harness terminal is inserted into the port, and the main rod knob at one end of the main rod away from the three-rod ball support connector 5 pushes the convex tooth 11 to the annular groove 41 in the sleeve 4, and then the main rod knob is rotated 45° clockwise, of course, it can be any angle, so that the convex tooth 11 and the concave tooth groove 43 are misaligned, and the convex tooth 11 of the main rod is stuck in the annular groove of the sleeve 4. Because there is a spiral spring on the top of the sleeve, the main rod can be directly stuck in the groove of the sleeve and stabilize the main rod and the sleeve after being fixed; when the main rod drives the sleeve, the sleeve moves with the support rod, and at the same time, the sleeve and the support rod jointly drive the flat rod to move, so that the support rod and the flat rod are stretched together to reach a fixed stable state; while the flat rod moves, the lock hook is also pushed by the flat rod and the spring component in the flat rod, so that the lock hook is directly hooked with the wiring harness terminal in the middle of the shell, and the flat rod support fixation and the lock hook are completed. At this time, the overall structure is in a locked state.

[0056] Removing the wiring harness terminal: When the wiring harness terminal is separated from the port, push the main rod and rotate it 45° counterclockwise. Of course, it can be any angle so that the convex tooth 11 corresponds to the concave tooth groove 43. Because the spring is connected to the top of the sleeve but not to the main rod, the main rod can be pushed and rotated to exit the annular groove 41, and the main rod is pulled outward. The convex teeth of the main rod are engaged with the concave tooth grooves of the sleeve. The main rod can drive the sleeve to move while moving, and the sleeve moves while driving the support rod and the flat rod to move together. The two flat rods gradually shrink under the joint action of the support rod and the sleeve. At this time, the spring component connecting the lock hook and the flat rod also shrinks because of the flat rod, and the cylindrical space between the flat rod and the lock hook is thus released. The spring component gives the lock hook flexible movement ability. At this time, with the continued contraction of the overall structure, the flat rods on both sides gradually form a "V" shape supported by two support rods. At this time, the lock hook also releases the wiring harness terminal in the process of the flat rod forming a "V" shape. At this time, the wiring harness terminal can be directly pulled out for removal. For the stability reasons of the firm connection between the port and the harness terminal, this structure can be installed at both ends of the harness terminal, which can further improve the stability. If the conditions are met, the harness terminal can be installed on all four sides, forming a multiple structure installation.

[0057] In an optional embodiment, a method for locking a wiring harness terminal port is implemented using the locking structure of the wiring harness terminal port as described above. The specific steps include:

[0058] Inserting the wiring harness terminal: When the wiring harness terminal is assembled with the port and the wiring harness terminal is inserted into the port, the main rod knob of the main rod is pushed to make the convex tooth 11 enter the annular groove 41 in the sleeve 4, and the main rod knob is rotated at a certain angle to make the convex tooth 11 misaligned with the concave tooth groove 43, so that the convex tooth 11 of the main rod is stuck in the annular groove of the sleeve 4, and the main rod is supported by the spring component to insert one end of the main rod into the sleeve 4, so that the main rod reaches a stable state; at the same time, the main rod drives the support rod to move through the sleeve, so that the support rod and the flat rod are stretched together to reach a fixed stable state; and while the flat rod moves, the lock hook is pushed by the flat rod and the spring component in the flat rod to connect with the wiring harness terminal hook in the middle of the shell, completing the inlay fixation, and at this time the port and the wiring harness terminal are in a locked state;

[0059] Removing the wiring harness terminal: When the wiring harness terminal and the port need to be separated, rotate the main rod by a certain angle to make the convex tooth 11 correspond to the concave tooth groove 43, and move the main rod back to make the convex tooth 11 withdraw from the annular groove 41, so that the convex tooth of the main rod is engaged with the concave tooth groove 43; at the same time, the main rod drives the support rod and the flat rod to move together through the sleeve, and the two flat rods gradually shrink under the joint action of the support rod and the sleeve, so that the two support rods 3 and the two flat rods 2 are respectively in a "V" shape, so that the locking hook releases the wiring harness terminal. At this time, the port and the wiring harness terminal are in a locked state, and the wiring harness terminal can be directly pulled out to achieve removal.

[0060] The present invention can be directly installed into the port when assembling the wiring harness terminal port. Since the locking hook has resilience, it is convenient to assemble. When the vehicle is inspected and repaired, there is a need for on-off detection of the wiring harness terminal. Therefore, the terminal removal and assembly should be as convenient as possible. This locking structure optimizes the disassembly and assembly process to improve the assembly and disassembly efficiency; since the movement of this locking structure has only two degrees of freedom, this locking structure can be used above and below the wiring harness terminal, and can also be used on the left and right of the wiring harness terminal. It can be installed around the wiring harness terminal in double, triple, or quadruple layers to achieve multiple installations; the locking structure has multiple installation plans for the wiring harness terminal. Due to the presence of the locking hook, the degree of gripping of the wiring harness terminal on the port is enhanced, and the influence of the temperature environment and the like on the wiring harness terminal due to the double-layer shell is reduced, thereby improving the assembly stability; the assembly stability between the wiring harness terminal and the port is improved, and the probability of the vehicle losing power and communication due to the loosening of the port due to vibration is reduced, thereby improving the safety of the vehicle.

[0061] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are only preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A locking structure for a wiring harness terminal port, characterized in that: Used to cooperate with the wiring harness terminal and the port of the connector to realize the conversion of the locking state and the unlocking state of the port to the wiring harness terminal; including: a main rod, a flat rod, a support rod, a sleeve, a three-rod ball support connector and a lock hook; one end of the main rod is limitedly inserted in the sleeve, and the other end passes through the housing of the connected wiring harness terminal and the port, so as to drive the sleeve to move by controlling the other end of the main rod; two support rods are connected to the outside of the sleeve in back-to-back relationship, and the other ends of the support rods are respectively connected to the flat rods through ball connectors; the sleeve is connected to the two flat rods through the three-rod ball support connector; the two flat rods are each provided with a lock hook at one end away from each other, so as to be connected to the wiring harness terminal through the two lock hooks; A plurality of convex teeth are formed on the outer circumference of the middle part of the main rod, and a limiting structure matched with the convex teeth is formed in the sleeve. The matching position of the convex teeth and the limiting structure is adjusted by rotating the telescopic main rod to achieve the locking state and unlocking state adjustment of the wiring harness terminal and the port; The limiting structure includes: an annular groove and a plurality of concave tooth grooves arranged axially, the annular groove limits the axial direction of the convex tooth, and the concave tooth groove limits the radial direction of the convex tooth; in the locked state, the convex tooth is located in the annular groove, the two support rods and the two flat rods are triangular, and the locking hook locks the wiring harness terminal in the port; in the unlocked state, the convex tooth is located in the concave tooth groove, the two support rods and the two flat rods are respectively "V" shaped, and the locking hook unlocks the wiring harness terminal in the port, and the wiring harness terminal can be separated from the port at this time.

2. The locking structure of a wiring harness terminal port according to claim 1, characterized in that: The concave tooth groove is arranged on a side of the annular groove away from the three-bar ball supporting connector.

3. The locking structure of a wiring harness terminal port according to claim 1, characterized in that: The locking structure is also provided with a plurality of spring components; The spring component includes: a first coil spring, a second coil spring and a third coil spring, wherein the first coil spring is arranged in one end where the sleeve is connected to the three-rod ball support connector, and is used to support the main rod inserted in the sleeve; the second coil spring and the third coil spring are respectively arranged at the connection between the two flat rods and the locking hook, so that the locking hook has a rebound force to move toward the flat rod.

4. A locking structure for a wiring harness terminal port according to claim 3, characterized in that: The first coil spring is connected to the sleeve.

5. The locking structure of a wiring harness terminal port according to claim 3, characterized in that: A short double-ear support is formed at the far end of the flat rod, and a cylindrical space is set for the locking hook relative to the short double-ear support. The short double-ear support is limited in the cylindrical space, and the second coil spring and the third coil spring are respectively limited outside the short double-ear support of the flat rod, so that the short double-ear support and the cylindrical space compress the second coil spring and the third coil spring by stretching the proximal ends of the two flat rods, so that the locking hook has a certain amount of movement.

6. The locking structure of a wiring harness terminal port according to claim 1, characterized in that: Two connection points are arranged on both sides of the sleeve for movably connecting with the support rod.

7. The locking structure of a wiring harness terminal port according to claim 1, characterized in that: The opening of the locking hook faces one side of the main rod.

8. A locking structure for a wiring harness terminal port according to any one of claims 1 to 7, characterized in that: The shell is a double-layer structure, the outer layer is used for dust and water resistance; the inner layer is used for connecting the lock hook.

9. A method for locking a wiring harness terminal port, characterized in that: This is achieved by using a locking structure for a wiring harness terminal port as described in any one of claims 1-7.

10. A method for locking a wiring harness terminal port according to claim 9, characterized in that: The following steps are involved: Inserting the wiring harness terminal: When the wiring harness terminal is assembled with the port and the wiring harness terminal is inserted into the port, the main rod knob of the main rod is pushed to make the convex teeth enter the annular groove in the sleeve, and the main rod knob is rotated at a certain angle to misalign the convex teeth with the concave tooth groove, so that the convex teeth of the main rod are stuck in the annular groove of the sleeve, and the main rod is supported by the spring component to insert one end of the main rod into the sleeve, so that the main rod reaches a stable state; at the same time, the main rod drives the support rod to move through the sleeve, so that the support rod and the flat rod are stretched together to reach a fixed stable state; and while the flat rod moves, the lock hook is pushed by the flat rod and the spring component in the flat rod to connect with the wiring harness terminal hook in the middle of the shell, completing the inlay fixation, and at this time the port and the wiring harness terminal are in a locked state; Removing the wiring harness terminal: When the wiring harness terminal and the port need to be separated, rotate the main rod at a certain angle to make the convex teeth correspond to the concave tooth grooves, and move the main rod back to make the convex teeth withdraw from the annular groove, so that the convex teeth of the main rod are engaged with the concave tooth grooves; at the same time, the main rod drives the support rod and the flat rod to move together through the sleeve, and the two flat rods gradually shrink under the joint action of the support rod and the sleeve, so that the two support rods and the two flat rods are respectively in a "V" shape, so that the locking hook releases the wiring harness terminal. At this time, the port and the wiring harness terminal are in a locked state, and the wiring harness terminal can be directly pulled out to achieve removal.

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