A plug-in terminal structure

Abstract

The present invention relates to the technical field of conductive connection, and in particular to a connector terminal structure, comprising a male head and a female head; the male head comprises a plug-in column, a flip block, a main contact, a spare contact and a trigger assembly; the flip block is rotatably installed in the plug-in column and penetrates one end of the plug-in column close to the female head, the main contact is fixed to the flip block, and the spare contact is slidably installed on the flip block along the radial direction of the rotation axis of the flip block; a connecting groove for cooperating with the main contact or the spare contact is provided in the female head; a retractable electrical connection block is provided on the side wall of the connecting groove; when the male head and the female head are normally plugged in, the main contact cooperates with the electrical connection block of the female head to achieve electrical connection, and when the connection is loose, the trigger assembly rotates the flip block to switch the spare contact to connect with the electrical connection block, and the electrical connection will not be disconnected during the process, ensuring that the connection is not interrupted and the operation of the electrical appliance connected thereto is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of conductive connection, and in particular to a connector terminal structure. Background Art

[0002] The electrical connection between electrical components and power supplies or between power supply electrical components and electrical components usually requires the use of connectors. After the connection is completed, the connection position may become loose due to vibration of the electrical components or frequent movement of the connection position. Once looseness occurs when the power is on, the connection will be interrupted, which will not only affect the normal use of the appliance and risk damaging the appliance, but may also cause abnormalities in the process being processed in some industrial processing occasions, resulting in greater production losses. Summary of the invention

[0003] The invention provides a plug connector terminal structure to solve the problem that the existing plug connector is loosened, resulting in connection interruption and affecting the operation of electrical appliances.

[0004] A plug-in connector terminal structure of the present invention adopts the following technical solution:

[0005] A plug-in terminal structure comprises a male head and a female head; the male head comprises a plug-in column, a flip block, a main contact, a spare contact and a trigger assembly; the plug-in column extends along the plug-in direction of the male head and the female head, and its extension direction is a first direction; the flip block is rotatably installed in the plug-in column and passes through one end of the plug-in column close to the female head, the rotation axis of the flip block is perpendicular to the plug-in column, and the extension direction of its rotation axis is a second direction; the main contact is fixed to the flip block, and the spare contact is slidably installed on the flip block along the radial direction of the rotation axis of the flip block; the angle between the main contact and the spare contact in the circumferential direction of the flip block is an obtuse angle; the main contact, the flip block and the spare contact are made of the same material; a hole for A connecting groove that cooperates with the main contact or the spare contact, the connecting groove passes through on both sides in the third direction, wherein the third direction is perpendicular to both the first direction and the second direction; an electrical connection block connected to the main contact or the spare contact is provided on the side wall of the connecting groove that is perpendicular to the second direction, and the electrical connection block can be extended and retracted along the second direction; the trigger component in the initial state causes the main contact to be located at the end of the flip block close to the female head in the first direction, and accumulates force during the plugging process of the male head and the female head, and when the connection between the main contact and the electrical connection block is loosened, the flip block is caused to rotate, switching the spare contact to be connected to the electrical connection block, and during the switching process, the electrical connection block ensures that the connection is not interrupted by abutting against the flip block.

[0006] Optionally, the electrical connection block can move along a first direction and a first elastic member is arranged between the electrical connection block and the female head, the first elastic member prompts the electrical connection block to move away from the male head or has a tendency to move away from the male head; a slide groove extending in a radial direction of the rotation axis of the flip block is provided on the main contact and the spare contact, and a card slot for cooperating with the electrical connection block is provided in the slide groove; the main contact, the flip block and the spare contact are made of the same material and can all be electrically connected to the electrical connection block; a transition groove connecting the slide grooves on the main contact and the spare contact is provided on the flip block, and the transition groove is an arc-shaped groove with the rotation center of the flip block as the center of the circle; the electrical connection block is squeezed and contracted when in the slide groove and the transition groove, and extends out to cooperate with the card slot when moving to the card slot.

[0007] Optionally, a stop block is provided on the plug-in column to limit the rotation of the flip block in a reference direction at the initial position, wherein the reference direction is the direction from the main contact to the spare contact around the circumference of the flip block, and the initial position is the position of the flip block when the main contact is located on the axis of the plug-in column close to one end of the female head; a guide slope is also provided in the female head, and during the plugging process of the male head and the female head, the guide slope pushes the spare contact to retract into the flip block; the trigger assembly includes a torsion spring, a gear and a rack, and the rack is fixedly connected to the spare contact and extends along the moving direction of the spare contact. , and a second elastic member is arranged between the gear and the flip block; the gear is rotatably installed on the flip block and is coaxial with the rotation axis of the flip block. The gear and the flip block are matched through a one-way transmission, so that the gear can rotate forward relative to the flip block and can drive the flip block to reverse synchronously, and when the flip block reverses, the main contact is driven to disengage from the electrical connection block and the spare contact is matched with the electrical connection block; the gear is connected to the plug-in column through a torsion spring, and the gear causes the torsion spring to store force when it rotates forward; the gear is meshed with the rack, and rotates forward when the rack moves as the spare contact shrinks into the flip block.

[0008] Optionally, an arc surface coaxial with the rotation axis of the flip block is also provided in the female head. In the first direction, the arc surface is located on the side of the guide slope away from the male head, and the end of the arc surface close to the guide slope is recessed relative to the guide slope toward the side away from the center of the female head, and the end of the arc surface away from the guide slope extends to the connecting groove; the rack includes a tooth segment and an optical axis segment. When the spare contact starts to contact the guide slope, the tooth segment of the rack meshes with the gear. When the spare contact moves along the guide slope, the rack is pressed by the guide slope to move, so that the gear rotates, and then the torsion spring accumulates force; before the spare contact disengages from the guide slope, the sliding groove on the main contact engages with the electrical connection block, and the rack moves to its optical axis segment to engage with the gear, until the spare contact disengages from the guide slope, and the rack drives the spare contact to extend and abut against the arc surface under the action of the second elastic member.

[0009] Optionally, the spare contact is a hollow elastic structure and is in a squeezed state when abutting against the arc surface; one end of the arc surface extends to the connecting groove and protrudes from the bottom of the connecting groove, so that the spare contact can enter the connecting groove in an expanded state after it is separated from the arc surface.

[0010] Optionally, a clamping assembly is further provided in the female connector, and the clamping assembly further clamps the plug post under the pushing of the main contact.

[0011] Optionally, the clamping assembly includes a trigger cylinder and multiple clamping plates, the trigger cylinder can be movably installed on the female head along a first direction and is coaxial with the plug-in column; the multiple clamping plates are distributed at intervals around the circumference of the trigger cylinder, and are all located on the inner circle of the trigger cylinder, and are all installed on the female head along the radial sliding direction of the trigger cylinder; the ends of the multiple clamping plates close to each other define a space for the plug-in column to pass through, and each clamping plate cooperates with the trigger cylinder through an inclined surface; a trigger rod is provided on the trigger cylinder, and the main contact can abut against the trigger rod after being detached from the electrical connection block, and the trigger cylinder is driven to move by the trigger rod, thereby making the multiple clamping plates close to each other and clamp the plug-in column.

[0012] Optionally, an end cover is fixedly provided on the plug-in column, and the end cover abuts and snaps against the end surface of the female connector to prevent dust from entering the female connector.

[0013] Optionally, there are two electrical connection blocks, which are respectively located on the two side walls of the connection groove perpendicular to the second direction. The side walls of the connection groove are provided with a receiving groove along the first direction. The electrical connection block is slidably installed in the receiving groove and connected to the bottom wall of the connection groove through a third elastic member.

[0014] Optionally, the ends of the main contact and the standby contact away from the flip block are both arc-shaped surfaces around the axis of the second direction.

[0015] The beneficial effects of the present invention are as follows: when the male and female heads of the connector terminal structure of the present invention are plugged in, the main contact is located at one end of the flip block close to the female head in the first direction, and the main contact cooperates with the electrical connection block of the female head to achieve electrical connection. When the connection is loose, the trigger component rotates the flip block, switches the standby contact to connect with the electrical connection block, and the electrical connection is not disconnected during the process, ensuring that the connection is not interrupted and the operation of the electrical appliances connected thereto is not affected. When the flip block rotates, a warning sign or alarm structure linked thereto can also be provided to remind the operator to repair it in time.

[0016] Furthermore, the spare contact abuts against the arc surface. Since the end of the arc surface close to the guide slope is recessed relative to the guide slope toward the side away from the center of the female head, a step is formed at the transition position between the arc surface and the guide slope, which prevents the spare contact from detaching from the female head and further improves the stability of the connection.

[0017] Furthermore, when the main contact is disconnected from the electrical connection block and the standby contact is switched to be connected to the electrical connection block, the plurality of clamping plates move to clamp the plug-in posts, further preventing the male and female connectors from being disconnected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a plug-in connector terminal structure of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the section along the AA direction;

[0021] Figure 3 for Figure 1 Schematic diagram of the section along the middle BB direction;

[0022] Figure 4 A schematic structural diagram of a male connector in an embodiment of a connector terminal structure of the present invention;

[0023] Figure 5 A front view of a male connector in an embodiment of a connector terminal structure of the present invention;

[0024] Figure 6 for Figure 5 Schematic diagram of the cross section of CC;

[0025] Figure 7 The figure is a schematic structural diagram of a female connector in an embodiment of a connector terminal structure of the present invention.

[0026] In the figure: 100, male connector; 110, plug-in column; 111, end cover; 120, flip block; 121, transition groove; 130, main contact; 131, slide groove; 132, card slot; 140, spare contact; 151, torsion spring; 152, gear; 153, rack; 200, female connector; 210, connecting groove; 220, electrical connecting block; 230, guiding slope; 240, arc surface; 251, trigger cylinder; 252, clamping plate; 253, trigger rod; 254, fourth elastic member. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] An embodiment of a connector terminal structure of the present invention is as follows Figures 1 to 7 As shown, it includes a male connector 100 and a female connector 200 .

[0029] The male connector 100 includes a plug post 110, a flip block 120, a main contact 130, a spare contact 140 and a trigger assembly; the plug post 110 extends along the plugging direction of the male connector 100 and the female connector 200, and its extension direction is a first direction. The flip block 120 is rotatably installed in the end of the plug post 110 close to the female connector 200, and passes through one end of the plug post 110 close to the female connector 200. The rotation axis of the flip block 120 is perpendicular to the plug post 110, and the extension direction of its rotation axis is a second direction. The main contact 130 is fixed to the flip block 120, and the spare contact 140 is slidably installed on the flip block 120 along the radial direction of the rotation axis of the flip block 120; the angle between the main contact 130 and the spare contact 140 in the circumferential direction of the flip block 120 is an obtuse angle, and the main contact 130, the flip block 120 and the spare contact 140 are made of the same material. One end of the main contact 130 and the standby contact 140 away from the flip block 120 is an arc surface around the axis of the second direction.

[0030] A connection slot 210 for cooperating with the main contact 130 or the spare contact 140 is provided in the female connector 200, and the connection slot 210 is connected on both sides in the third direction, wherein the third direction is perpendicular to both the first direction and the second direction. An electrical connection block 220 connected to the main contact 130 or the spare contact 140 is provided on the side wall of the connection slot 210 perpendicular to the second direction, and the electrical connection block 220 can be extended and retracted along the second direction.

[0031] In the initial state, the trigger component causes the main contact 130 to be located at one end of the flip block 120 close to the female head 200 in the first direction, and accumulates force during the plugging process of the male head 100 and the female head 200, and when the connection between the main contact 130 and the electrical connection block 220 is loosened, it causes the flip block 120 to rotate, switching the standby contact 140 to be connected with the electrical connection block 220, and during the switching process, the electrical connection block 220 abuts against the flip block 120 to ensure that the connection is not interrupted.

[0032] When the male connector 100 and the female connector 200 are plugged in, the main contact 130 is located at one end of the flip block 120 close to the female connector 200 in the first direction. The main contact 130 cooperates with the electrical connection block 220 of the female connector 200 to achieve electrical connection. When the connection is loose, the trigger assembly rotates the flip block 120, switches the standby contact 140 to connect with the electrical connection block 220, and the electrical connection is not disconnected during the process, ensuring that the connection is not interrupted and the operation of the electrical appliances connected thereto is not affected. When the flip block 120 rotates, a warning sign or alarm structure can also be set to remind the operator to repair it in time.

[0033] In this embodiment, the electrical connection block 220 can move along the first direction and a first elastic member (not shown in the figure) is arranged between the electrical connection block 220 and the female connector 200. The first elastic member causes the electrical connection block 220 to move away from the male connector 100 or has a tendency to move away from the male connector 100. Specifically, there are two electrical connection blocks 220, which are respectively located on the two side walls of the connection groove 210 perpendicular to the second direction. The side walls of the connection groove 210 are provided with a receiving groove along the first direction. The electrical connection block 220 is slidably installed in the receiving groove and connected to the bottom wall of the connection groove 210 through a third elastic member. The electrical connection block 220 includes a sliding portion and a clamping portion. The sliding portion is movably installed in the receiving groove of the side wall of the connection groove 210 along the first direction, and is restricted by the receiving groove to move along the third direction, and is always not separated from the receiving groove. The clamping portion can be elastically and telescopically installed on the sliding portion along the second direction. The main contact 130 and the spare contact 140 are provided with a slide groove 131 extending in the radial direction of the rotation axis of the flip block 120, and a clamping groove 132 for cooperating with the electrical connection block 220 is provided in the slide groove 131; the depth of the clamping groove 132 is greater than the depth of the slide groove 131. The flip block 120 is provided with a transition groove 121 connecting the slide grooves 131 on the main contact 130 and the spare contact 140, and the transition groove 121 is an arc groove with the rotation center of the flip block 120 as the center of the circle; the electrical connection block 220 is squeezed and contracted when in the slide groove 131 and the transition groove 121, and extends to cooperate with the clamping groove 132 when moving to the clamping groove 132. When the male connector 100 and the female connector 200 are plugged in, the electrical connection block 220 moves along the slide groove 131 on the main contact 130 until the clamping portion of the electrical connection block 220 matches the clamping groove 132, and the male connector 100 and the female connector 200 are connected. As the use time increases, the connection between the electrical connection block 220 and the main contact 130 becomes loose. When the trigger assembly rotates the flip block 120, the clamping portion of the electrical connection block 220 is disengaged from the clamping groove 132. When the main contact 130 rotates, the electrical connection block 220 overcomes the elastic force of the first elastic member and moves along the slide groove 131 on the main contact 130 to the transition groove 121, and then moves to the slide groove 131 of the spare contact 140 under the rotation of the flip block 120, and then moves in the direction away from the male connector 100 under the action of the first elastic member to match the clamping groove 132 on the spare contact 140. During the rotation of the flip block 120 , the electrical connection block 220 always moves along the slide groove 131 and the transition groove 121 , ensuring that the electrical connection between the male connector 100 and the female connector 200 is not disconnected.

[0034] In this embodiment, a stop block (not shown in the figure) is provided on the plug post 110 to limit the rotation of the flip block 120 in the reference direction at the initial position, wherein the reference direction is the direction from the main contact 130 to the spare contact 140 around the flip block 120, and the initial position is the position of the flip block 120 when the main contact 130 is located on the axis of the plug post 110 near one end of the female connector 200. A guide slope 230 is also provided in the female connector 200. During the plugging process of the male connector 100 and the female connector 200, the guide slope 230 pushes the spare contact 140 to retract into the flip block 120. The trigger assembly includes a torsion spring 151, a gear 152 and a rack 153. The rack 153 is fixedly connected to the spare contact 140 and extends along the moving direction of the spare contact 140. A second elastic member (not shown in the figure) is provided between the rack 153 and the flip block 120. The gear 152 is rotatably mounted on the flip block 120 and is coaxial with the rotation axis of the flip block 120. The gear 152 and the flip block 120 are matched by one-way transmission, so that the gear 152 can rotate forward relative to the flip block 120 and can drive the flip block 120 to reverse synchronously. When the flip block 120 reverses, it drives the main contact 130 to separate from the electrical connection block 220 and then makes the standby contact 140 match the electrical connection block 220. The gear 152 is connected to the plug column 110 through a torsion spring 151. When the gear 152 rotates forward, the torsion spring 151 accumulates force; the gear 152 meshes with the rack 153 and rotates forward when the rack 153 moves as the standby contact 140 shrinks into the flip block 120. Among them, the forward rotation is the direction from the main contact 130 to the standby contact 140 around the circumference of the flip block 120, and the reverse rotation is the direction from the standby contact 140 to the main contact 130 around the circumference of the flip block 120.

[0035] In this embodiment, the gear 152 and the flip block 120 are matched through a one-way bearing, and the one-way bearing allows the flip block 120 to rotate synchronously with the gear 152 when the gear 152 is reversed. In some other embodiments, the gear 152 and the flip block 120 can be matched through a one-way ratchet. Specifically, a coaxial end face ratchet gear is fixed inside the flip block 120, and a retractable ratchet is installed on the end face of the gear 152. When the gear 152 rotates forward, the retractable ratchet can be pushed and retracted by the inclined surface of the teeth on the end face ratchet gear, so that the gear 152 can rotate forward relative to the flip block 120. When the gear 152 is reversed, the retractable ratchet is abutted by the straight surface of the teeth on the end face ratchet gear, so that the gear 152 drives the flip block 120 to reverse synchronously.

[0036] In this embodiment, an arc surface 240 coaxial with the rotation axis of the flip block 120 is further provided in the female head 200. In the first direction, the arc surface 240 is located on the side of the guide slope 230 away from the male head 100, and the end of the arc surface 240 close to the guide slope 230 is recessed relative to the guide slope 230 toward the side away from the center of the female head 200, and the end of the arc surface 240 away from the guide slope 230 extends to the connecting groove 210. The rack 153 includes a tooth segment and an optical axis segment. When the standby contact 140 begins to contact the guide bevel 230, the tooth segment of the rack 153 meshes with the gear 152. When the standby contact 140 moves along the guide bevel 230, the rack 153 is pressed by the guide bevel 230 to move, so that the gear 152 rotates, thereby storing force in the torsion spring 151. Before the standby contact 140 disengages from the guide bevel 230, after the slide groove 131 on the main contact 130 and the electrical connection block 220 enter into engagement, the rack 153 moves until its optical axis segment engages with the gear 152, until the standby contact 140 disengages from the guide bevel 230, the rack 153 drives the standby contact 140 to extend and abut against the arc surface 240 under the action of the second elastic member. The spare contact 140 abuts against the arc surface 240. Since one end of the arc surface 240 close to the guide slope 230 is recessed relative to the guide slope 230 toward the side away from the center of the female head 200, a step is formed at the transition position between the arc surface 240 and the guide slope 230, which prevents the spare contact 140 from disengaging from the female head 200, and prevents the gear 152 from reversing through the rack 153. At the same time, the slide groove 131 on the main contact 130 cooperates with the electrical connection block 220 to prevent the flip block 120 where the main contact 130 is located from rotating, thereby preventing the gear 152 from driving the flip block 120 to reverse, so that the torsion spring 151 remains in a stored force state.

[0037] In this embodiment, the spare contact 140 is a hollow elastic structure and is in an extruded state when it abuts against the arc surface 240; the arc surface 240 extends to one end of the connecting groove 210 and protrudes from the bottom of the connecting groove 210, so that after the spare contact 140 is separated from the arc surface 240, it enters the connecting groove 210 in an expanded state, so as to increase the friction force when contacting the side wall of the connecting groove 210, thereby ensuring the connection effect between the spare contact 140 and the electrical connection block 220.

[0038] In this embodiment, a clamping assembly is further disposed in the female connector 200 , and the clamping assembly further clamps the plug post 110 under the push of the main contact 130 . Specifically, the clamping assembly includes a trigger cylinder 251 and a plurality of clamping plates 252. The trigger cylinder 251 can be movably installed on the female connector 200 along a first direction and is coaxial with the plug-in column 110. The plurality of clamping plates 252 are distributed at intervals around the circumference of the trigger cylinder 251 and are all located on the inner circle of the trigger cylinder 251 and are all radially slidably installed on the female connector 200 along the trigger cylinder 251. One end of the plurality of clamping plates 252 close to each other defines a space for the plug-in column 110 to pass through, and each clamping plate 252 is matched with the trigger cylinder 251 through an inclined surface. A trigger rod 253 is provided on the trigger cylinder 251. After the main contact 130 is separated from the electrical connection block 220, it can abut against the trigger rod 253, and the trigger cylinder 251 is driven to move by the trigger rod 253, so that the plurality of clamping plates 252 are brought close to each other to clamp the plug-in column 110. A fourth elastic member 254 is provided between the trigger cylinder 251 and the female connector 200 to force the trigger cylinder 251 to move away from the male connector 100. In the initial state, the fourth elastic member 254 drives the plurality of clamping plates 252 to move away from each other to prevent the plurality of clamping plates 252 from affecting the insertion of the plug post 110 into the female connector 200. Furthermore, the plurality of clamping plates 252 reserve a space for the spare contact 140 to pass through in the circumferential direction of the trigger cylinder 251.

[0039] In this embodiment, an end cover 111 is fixedly provided on the plug post 110 , and the end cover 111 abuts against and engages with the end surface of the female connector 200 , thereby preventing dust from entering the female connector 200 .

[0040] In this embodiment, a space is reserved in the female connector 200 for the plug-in post 110 and the spare contact 140 to pass through, and the inner side wall of the female connector 200 can be connected to the plug-in post 110 via a spline (not shown in the figure) along a first direction to guide the plugging of the plug-in post 110 and the female connector 200, thereby ensuring the accurate connection between the main contact 130 and the electrical connection block 220.

[0041] When the male connector 100 and the female connector 200 of the connector terminal structure of the present invention are not connected, the torsion spring 151 is in a natural state, and the gear 152 is used to rotate the flip block 120 until the main contact 130 is located at the end of the plug post 110 in the axial direction close to the female connector 200. When the male connector 100 and the female connector 200 are plugged in, the plug post 110 enters the female connector 200 along its axial direction, and the spare contact 140 abuts against the guide slope 230. In the process of the plug post 110 approaching the female connector 200, since the angle between the spare contact 140 and the main contact 130 is an obtuse angle, and the plug post 110 restricts the flip block 120 from rotating in the reference direction at the current position, the spare contact 140 can be retracted into the flip block 120 under the push of the guide slope 230 without causing the flip block 120 to rotate. When the spare contact 140 retracts, the gear 152 is driven to rotate forward relative to the flip block 120 through the rack 153, so that the torsion spring 151 accumulates force. Before the spare contact 140 is separated from the guide slope 230, after the slide groove 131 on the main contact 130 and the electrical connection block 220 enter into engagement, the rack 153 moves to its optical axis section to engage with the gear 152 (in this process, since the engagement of the slide groove 131 on the main contact 130 and the electrical connection block 220 limits the rotation of the flip block 120, the gear 152 will not reverse), until the spare contact 140 is separated from the guide slope 230, the rack 153 drives the spare contact 140 to extend and abut against the arc surface 240 under the action of the second elastic member, and the step formed at the transition position of the arc surface 240 and the guide slope 230 can prevent the spare contact 140 from being separated from the female connector 200. While the backup contact 140 abuts against the arc surface 240 , the main contact 130 moves to the electrical connection block 220 to cooperate with the slot 132 , the end cover 111 on the plug post 110 is buckled with the female connector 200 , and the male connector 100 and the female connector 200 are connected.

[0042] As the usage time increases, the card slot 132 of the main contact 130 used to cooperate with the electrical connection block 220 will wear out, thereby loosening the cooperation with the electrical connection block 220. If the connection cooperation between the electrical connection block 220 and the main contact 130 is not sufficient to overcome the torque of the torsion spring 151, it means that the connection is already loose. At this time, the torsion spring 151 drives the gear 152 to reverse under the action of restoring deformation, and the gear 152 drives the flip block 120 to reverse synchronously. The flip block 120 drives the spare contact 140 to move along the arc surface 240. In the process of disengaging from the connecting groove 210, the main contact 130 drives the electrical connection block 220 to move along the slide groove 131 until the electrical connection block 220 cooperates with the transition groove 121 on the flip block 120, and then moves to the slide groove 131 of the spare contact 140 after the flip block 120 rotates until the spare contact 140 enters the connecting groove 210. The standby contact 140 expands while being separated from the arc surface 240 to increase the friction between the standby contact 140 and the side wall of the connection groove 210. After the main contact 130 rotates to be separated from the connection groove 210, it pushes the trigger rod 253, so that the trigger cylinder 251 moves, and then the trigger cylinder 251 cooperates with the inclined surface of the clamping plate 252, driving the multiple clamping plates 252 to move closer to each other and clamp the plug column 110, further increasing the connection strength between the male connector 100 and the female connector 200. Among them, while the flip block 120 rotates, a warning sign or alarm structure linked to it can also be set to remind the operator to repair in time. For example, a window can be opened on the female connector 200 to communicate with the trigger cylinder 251, and different color blocks can be set on the outer wall of the trigger cylinder 251. When the trigger cylinder 251 moves along the first direction, different color blocks can be switched to correspond to the window, thereby reflecting the connection status of the main contact 130 and the standby contact 140 inside the female connector 200.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connector terminal structure, characterized in that: It comprises a male head and a female head; the male head comprises a plug-in column, a flip block, a main contact, a spare contact and a trigger assembly; the plug-in column extends along the plug-in direction of the male head and the female head, and its extension direction is a first direction; the flip block is rotatably installed in the plug-in column and passes through one end of the plug-in column close to the female head, the rotation axis of the flip block is perpendicular to the plug-in column, and the extension direction of its rotation axis is a second direction; the main contact is fixed to the flip block, and the spare contact is slidably installed on the flip block along the radial direction of the rotation axis of the flip block; the angle between the main contact and the spare contact in the circumferential direction of the flip block is an obtuse angle; a connecting groove for cooperating with the main contact or the spare contact is provided in the female head, and the connecting groove passes through on both sides of the third direction, wherein the third direction is perpendicular to both the first direction and the second direction; an electrical connecting block connected to the main contact or the spare contact is provided on the side wall of the connecting groove perpendicular to the second direction, and the electrical connecting block can be connected along the second direction expansion and contraction; in the initial state, the trigger component causes the main contact to be located at the end of the flip block close to the female head in the first direction, and accumulates force during the plugging process of the male head and the female head, and when the connection between the main contact and the electrical connection block is loosened, the flip block is caused to rotate, and the spare contact is switched to be connected with the electrical connection block, and during the switching process, the electrical connection block ensures that the connection is not interrupted by abutting against the flip block; both the main contact and the spare contact are provided with a slide groove extending in the radial direction of the rotation axis of the flip block, and the slide groove is provided with a card slot for cooperating with the electrical connection block; the main contact, the flip block and the spare contact are made of the same material and can all be electrically connected to the electrical connection block; a transition groove connecting the slide grooves on the main contact and the spare contact is provided on the flip block, and the transition groove is an arc-shaped groove with the rotation center of the flip block as the center of the circle; the electrical connection block is squeezed and contracted when in the slide groove and the transition groove, and extends out to cooperate with the card slot when moving to the card slot.

2. A connector terminal structure according to claim 1, characterized in that: The electrical connection block can move along a first direction and a first elastic member is arranged between the electrical connection block and the female connector. The first elastic member forces the electrical connection block to move away from the male connector or has a tendency to move away from the male connector.

3. A connector terminal structure according to claim 2, characterized in that: The plug-in column is provided with a stop block for limiting the rotation of the flip block in the reference direction at the initial position, wherein the reference direction is the direction from the main contact to the spare contact around the circumference of the flip block, and the initial position is the position of the flip block when the main contact is located on the axis of the plug-in column close to one end of the female head; a guiding slope is also provided in the female head, and during the plugging process of the male head and the female head, the guiding slope pushes the spare contact to retract into the flip block; the trigger assembly includes a torsion spring, a gear and a rack, the rack is fixedly connected to the spare contact, and extends along the moving direction of the spare contact, and A second elastic member is arranged between the gear and the flip block; the gear is rotatably installed on the flip block and is coaxial with the rotation axis of the flip block, and the gear and the flip block are matched through a one-way transmission, so that the gear can rotate forward relative to the flip block and can drive the flip block to reverse synchronously, and when the flip block reverses, the main contact is driven to disengage from the electrical connection block and the spare contact is matched with the electrical connection block; the gear and the plug-in column are connected through a torsion spring, and the gear causes the torsion spring to store force when rotating forward; the gear is meshed with the rack, and rotates forward when the rack moves as the spare contact shrinks into the flip block.

4. A connector terminal structure according to claim 3, characterized in that: An arc surface coaxial with the rotation axis of the flip block is also provided in the female head. In the first direction, the arc surface is located on the side of the guide slope away from the male head, and the end of the arc surface close to the guide slope is recessed relative to the guide slope toward the side away from the center of the female head, and the end of the arc surface away from the guide slope extends to the connecting groove; the rack includes a tooth segment and an optical axis segment. When the spare contact starts to contact the guide slope, the tooth segment of the rack meshes with the gear. When the spare contact moves along the guide slope, the rack is pressed by the guide slope to move, so that the gear rotates, and then the torsion spring accumulates force; before the spare contact disengages from the guide slope, the sliding groove on the main contact engages with the electrical connection block, and the rack moves to its optical axis segment to engage with the gear, until the spare contact disengages from the guide slope, and the rack drives the spare contact to extend and abut against the arc surface under the action of the second elastic member.

5. A connector terminal structure according to claim 4, characterized in that: The spare contact is a hollow elastic structure and is in an extruded state when it abuts against the arc surface; one end of the arc surface extends to the connecting groove and protrudes from the bottom of the connecting groove, so that the spare contact can enter the connecting groove in an expanded state after it is separated from the arc surface.

6. A connector terminal structure according to claim 1, characterized in that: A clamping assembly is also provided in the female connector, and the clamping assembly further clamps the plug-in column under the push of the main contact.

7. A connector terminal structure according to claim 1, characterized in that: The clamping assembly includes a trigger cylinder and a plurality of clamping plates. The trigger cylinder can be movably installed on the female head along a first direction and is coaxial with the plug-in column. The plurality of clamping plates are distributed at intervals around the circumference of the trigger cylinder and are all located on the inner circle of the trigger cylinder and are all slidably installed on the female head along the radial direction of the trigger cylinder. One end of the plurality of clamping plates close to each other defines a space for the plug-in column to pass through, and each clamping plate cooperates with the trigger cylinder through an inclined surface. A trigger rod is provided on the trigger cylinder, and the main contact can abut against the trigger rod after being separated from the electrical connection block, and the trigger cylinder is driven to move by the trigger rod, thereby making the plurality of clamping plates close to each other and clamping the plug-in column.

8. A connector terminal structure according to claim 1, characterized in that: An end cover is fixedly arranged on the plug post, and the end cover abuts and snaps with the end surface of the female head to prevent dust from entering the female head.

9. A connector terminal structure according to claim 1, characterized in that: There are two electrical connection blocks, which are respectively located on the two side walls of the connection groove perpendicular to the second direction. The side walls of the connection groove are provided with a receiving groove along the first direction. The electrical connection block is slidably installed in the receiving groove and connected to the bottom wall of the connection groove through a third elastic member.

10. A connector terminal structure according to claim 1, characterized in that: The ends of the main contact and the standby contact away from the flip block are both arc-shaped surfaces around the axis of the second direction.

Images