Anti-loosening wiring terminal

Abstract

The invention discloses an anti-loosening wiring terminal, and belongs to the technical field of wiring terminals. The terminal comprises the terminal base and the wire inlet formed in the middle of the front end of the terminal base, the pressing head is installed in the middle of the upper portion of the terminal base, the lower pressing column is fixed to the middle of the lower portion of the pressing head, double fixation of the front end and the rear end can be achieved, and therefore the fixing effect of a butt joint wire end is improved; the problem that single fixation is easy to fall off is prevented, front and back fixation of the butt joint wire head can be completed only by pressing the pressing head, operation is simpler, working efficiency can be improved, and meanwhile when a wire body connected into the terminal base encounters external stress such as external pulling and the like, a main stress point acts on a rear end fixing position, so that the wire body is prevented from falling off. According to the utility model, the stress at the fixed position of the front-end contact seat can be reduced, the possibility that the contact seat is easy to loosen due to direct stress is prevented, and the stability of electrical connection at the contact seat is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wiring terminals, in particular to a loosening-proof wiring terminal. BACKGROUND

[0002] Terminals are wiring terminals used for transmitting electrical signals or conducting electricity in electrical connections, commonly found in the connection of batteries, wires, and equipment. They can be divided into single-hole, double-hole, socket, and hook types in terms of structure, and their materials include copper, aluminum, iron, and their alloy plating. The core function of terminals is to achieve circuit connection, and stability is ensured through screw fixation, welding, or crimping processes. They are widely used in household appliances, automobiles, power equipment, and new energy fields.

[0003] However, existing wiring terminals often use a single fixed point for fixation through screwing, welding, or crimping. When the connected wire is subjected to external forces such as pulling, the external force directly acts on the single contact fixation point, which can easily cause loosening or even disconnection, affecting the stability of the wiring terminal. Additionally, when the wiring terminal is used in a low-temperature environment, the cold contraction effect of metal can also cause the fixation point to loosen or even detach.

[0004] Therefore, we propose a loosening-proof wiring terminal to solve the above problems. SUMMARY

[0005] To address the problem of existing technology where the connected wire is subjected to external forces such as pulling, the external force directly acts on the single contact fixation point, which can easily cause loosening or even disconnection, affecting the stability of the wiring terminal, the purpose of the present application is to provide a loosening-proof wiring terminal.

[0006] To solve the above problems, the technical solution adopted by the present application is as follows: a loosening-proof wiring terminal, comprising a terminal seat and a wire inlet arranged in the middle of the front end of the terminal seat, a pressing head is installed in the upper middle part of the terminal seat, a lower pressing column is fixed below the lower middle part of the pressing head, and the pressing head is connected with the terminal seat through the lower pressing column, a contact seat is arranged in the lower middle part of the inner side of the terminal seat, an extrusion mechanism is arranged on both sides of the contact seat, a side pressing block is fixed below both sides of the pressing head, and an upper extrusion plate is fixedly arranged at the bottom of the side pressing block; a positioning mechanism is arranged in the middle of one side of the side pressing block, a deformation mechanism is installed in the lower middle part of the lower pressing column, and a friction mechanism is annularly arranged on the upper surface of the extrusion mechanism.

[0007] Further, the lower pressing column includes a lower pressing head fixed to the lower middle part of the pressing head, and a pressing rod is fixed to the outer sides of the lower pressing head.

[0008] Further, the extrusion mechanism comprises a contact plate arranged below the pressing head, and the middle part of the contact plate is fixedly connected with the contact seat, the surface of the contact plate is provided with a through hole, and the middle part of the through hole is penetrated through with a rotating connecting rod, the middle part of the rotating connecting rod is rotatably installed with a supporting turntable, the bottom of the supporting turntable is fixedly connected with the inner bottom surface of the terminal seat, and the left end of the rotating connecting rod is rotatably installed with a pushing rotating rod.

[0009] Further, the upper end of the pushing rotating rod is rotatably installed with a sliding seat, the middle part of the sliding seat is slidably provided with a sliding rail, the upper end of the sliding rail is fixedly provided with a rotating plate, one end of the rotating plate is rotatably installed with a rotating shaft, the rotating plate is rotatably connected with the contact plate through the rotating shaft, the upper middle part of the rotating plate is fixedly installed with a ball hinge seat, and the top of the ball hinge seat is rotatably installed with a lower extrusion plate.

[0010] Further, the positioning mechanism comprises a positioning cylinder fixedly arranged on one side of the surface of the side pressing block, and a supporting spring is installed in the inner middle part of the positioning cylinder, the front end of the supporting spring is fixedly provided with an engaging head, the rear end of the supporting spring is fixedly connected with the positioning cylinder, and the engaging head is elastically connected with the positioning cylinder through the supporting spring.

[0011] Further, the front end of the engaging head is provided with a pressing block, and the front end of the pressing block is fixedly provided with a pressing rod, and the pressing rod and the pressing block are slidably connected with the terminal seat.

[0012] Further, the deforming mechanism comprises an installation cavity arranged in the lower part of the inner part of the pressing head, and a fixed cylinder is fixedly arranged in the installation cavity, and a movable cavity two is arranged in the inner part of the fixed cylinder.

[0013] Further, a memory spring two is installed in the inner middle part of the movable cavity two, the bottom of the memory spring two is fixedly provided with a resisting rod, the top of the memory spring two is fixedly connected with the movable cavity two, and the resisting rod is elastically connected with the fixed cylinder through the memory spring two.

[0014] Further, the upper extrusion plate comprises a fitting plate fixedly arranged on the bottom of the side pressing block, a movable cavity one is arranged in the lower part of the inner part of the fitting plate, a movable seat one is installed in the movable cavity one, a memory spring one is fixedly arranged in the inner upper part of the movable seat one, the top of the memory spring one is fixedly connected with the fitting plate, the movable seat one is elastically connected with the fitting plate through the memory spring one, and the bottom surface of the movable seat one is fixedly provided with an inclined tooth one.

[0015] Further, the friction mechanism comprises a movable seat two installed on the inner surface of the lower extrusion plate, a memory spring three is fixedly arranged in the lower part of the inner part of the movable seat two, the bottom of the memory spring three is fixedly connected with the lower extrusion plate, and the outer surface of the movable seat two is fixedly provided with an inclined tooth two.

[0016] Compared with the prior art, the present application has the following advantages: 1. The connector of this invention provides dual fixation at both the front and rear ends, thereby improving the fixing effect and preventing the problem of easy detachment due to single fixation. Fixing the connector at both ends can be completed simply by pressing the pressing head, making operation simpler and improving work efficiency. Furthermore, the roughened contact surface ensures stable fixation during clamping. When the wire inside the terminal block encounters external forces such as pulling, the main force is applied to the rear fixing position, reducing the force on the front contact point and preventing loosening due to direct force. This ensures stable electrical connection at the contact point and improves the performance of the connector.

[0017] 2. After being pressed and fixed, this invention avoids the possibility of accidental separation and can automatically deform and contact according to the shape of a single wire to adapt to the shape of the single wire, maximizing the contact area between the deformation mechanism and the single wire. Thus, when continuously pressed down, the larger contact area can improve the firmness of the pressure fixation of the connected wire, improve the stability and firmness of the wiring, and prevent the possibility of loosening. At the same time, the deformation mechanism can directly fix the circular O-type connector and deform and compress the single wire, which is beneficial to improve the adaptability of the terminal block to different connectors and further improve the use effect of the terminal block.

[0018] 3. The present invention can automatically compensate for the possible deformation due to temperature in low-temperature environments to ensure the fixing effect of the terminal block on the connector and prevent the possibility of loosening at low temperatures. At the same time, it can increase the fixing friction during compression and fixation to ensure the firmness. Furthermore, when the connector encounters outward pulling force, the unidirectional protrusion can also provide good interlocking ability to further prevent the connector from loosening or detaching. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the terminal block of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the contact plate of the present invention; Figure 4 This is a three-dimensional structural diagram of the rotating connecting rod of the present invention; Figure 5 This is a cross-sectional three-dimensional structural diagram of the lower extrusion plate of the present invention; Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 7 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C; Figure 9 This is a schematic diagram of the three-dimensional structure of the pressing head of the present invention after pressing; Figure 10 This is a cross-sectional perspective view of the three-dimensional structure of the pressing head of the present invention after pressing. Figure 11 For the present invention Figure 10 Enlarged structural diagram at point D.

[0020] In the diagram: 1. Terminal block; 2. Cable inlet; 3. Pressing head; 4. Lower pressing column; 41. Lower pressing head; 42. Pressing rod; 5. Contact seat; 6. Extrusion mechanism; 61. Contact plate; 62. Through port; 63. Rotating connecting rod; 64. Support frame; 65. Pushing rod; 66. Sliding seat; 67. Sliding rail; 68. Rotating plate; 69. Rotating shaft; 610. Lower extrusion plate; 611. Ball joint seat; 7. Side pressing block; 8. Upper extrusion plate; 81. Adhesive plate; 82. 83. Movable cavity 1; 84. Movable seat 1; 85. Memory spring 1; 9. Helical tooth 1; 10. Deformation mechanism; 91. Mounting cavity; 92. Fixed cylinder; 93. Movable cavity 2; 94. Memory spring 2; 95. Abutting rod; 10. Friction mechanism; 101. Movable seat 2; 102. Memory spring 3; 103. Helical tooth 2; 20. Positioning mechanism; 201. Positioning cylinder; 202. Support spring; 203. Engaging head; 204. Pressing rod; 205. Pressing block. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments.

[0022] To address the issue that when the wires connected to the terminals are subjected to external forces such as pulling, the external force acts directly on a single contact point, easily leading to loosening or even detachment, thus affecting the stability of the terminal block's use, such as... Figures 1-5 As shown: A type of anti-loosening terminal block includes a terminal block 1 and an inlet 2 located at the center of the front end of the terminal block 1. The inlet 2 has an expandable rubber sheet on its surface, allowing external wires to be inserted into the terminal block 1. A pressing head 3 is mounted at the center of the upper part of the terminal block 1, and a pressing post 4 is fixed at the center of the lower part of the pressing head 3. The pressing head 3 is slidably connected to the terminal block 1 via the pressing post 4. A contact seat 5 is located at the center of the lower inner side of the terminal block 1. The contact seat 5 is the central energized seat of the terminal block 1, allowing the external wires to be inserted into the terminal block 1. The contact head 3 is pressed to make contact with the contact base 5 to achieve an electrical connection. The contact base 5 has a circular hole on its top, which can cooperate with the pressing post 4. When the circular O-type terminal is connected to the contact base 5, the pressing head 3 is pressed down, causing the pressing post 4 to be pressed down. At this time, the pressing post 4 will pass through the circular O-type terminal and be inserted into the circular hole of the contact base 5. At this time, the pressing post 4 can apply pressure to the terminal to connect with the contact base 5. At the same time, the pressing post 4 passing through the circular O-type terminal into the contact base 5 can also position the terminal to prevent it from falling off, so as to ensure a stable connection.

[0023] The contact seat 5 is equipped with a pressing mechanism 6 on both sides. Side pressing blocks 7 are fixed below both sides of the pressing head 3, and an upper pressing plate 8 is fixed to the bottom of the side pressing blocks 7. When the pressing head 3 and the lower pressing column 4 press down to fix the connector, the lower pressing column 4 moves downward, eventually causing one end of the pressing mechanism 6 to move upward. Simultaneously, when the pressing head 3 presses down, the side pressing blocks 7 and the upper pressing plate 8 move downward together. The upper pressing plate 8 and the pressing mechanism 6 are positioned opposite each other, so when the pressing head 3 presses down, the pressing mechanism 6 and the upper pressing plate 8 move in opposition. After the connector is fixed to the contact seat 5 by the lower pressing column 4, the opposition of the pressing mechanism 6 and the upper pressing plate 8 can press and fix the rear end of the connector, allowing the connector to have both front and rear ends. The double fixing mechanism improves the fixing effect of the connector and prevents it from falling off easily when fixed by a single fixing method. The front and rear fixing of the connector can be completed by simply pressing the pressing head 3, which makes the operation simpler and improves work efficiency. At the same time, the contact surfaces of the pressing mechanism 6 and the upper pressing plate 8 are roughened, which ensures the stability of the connector during the pressing and clamping fixing. When the wire connected to the terminal block 1 is subjected to external forces such as pulling, the main force will be applied to the rear fixing position of the pressing mechanism 6 and the upper pressing plate 8, which can reduce the force on the fixing position of the front contact seat 5 and prevent the contact seat 5 from being easily loosened due to direct force. This ensures the stability of the electrical connection at the contact seat 5 and improves the performance of the connector.

[0024] A positioning mechanism 20 is provided in the middle of one side of the side pressure block 7. When the pressing head 3 and the side pressure block 7 are pressed down to fix the terminal head, the positioning mechanism 20 can be used to lock and fix the side pressure block 7 and the terminal block 1, thereby fixing the position of the side pressure block 7 and the pressing head 3 and ensuring that the terminal block 1 is in a good wiring condition. Figure 1 As shown, the positioning mechanism 20 is located in the side gap between the two terminal blocks 1. After the terminal blocks 1 are used, the positioning mechanism 20 can only be separated by using an external pressing tool such as a screwdriver, so that the terminal blocks 1 can be disconnected. This avoids the possibility of accidentally separating the positioning mechanism 20 if it is located on the front of the terminal blocks 1.

[0025] A deformation mechanism 9 is installed in the lower center of the pressing column 4. The deformation mechanism 9 consists of multiple sets of independently retractable guide posts. When a circular O-type connector is connected to the terminal block 1, the pressing column 4 will drive the deformation mechanism 9 to pass through the circular O-type connector and insert into the contact seat 5 for fixation. When a single wire is connected to the terminal block 1, when the pressing column 4 and the deformation mechanism 9 are pressed down, the multiple sets of independently retractable guide posts below the deformation mechanism 9 will automatically deform and contact according to the shape of the single wire to adapt to the shape of the single wire, maximizing the contact area between the deformation mechanism 9 and the single wire. Thus, when the pressing column 4 and the deformation mechanism 9 continue to press down, the larger contact area can improve the firmness of the pressure fixation of the connected wire. Combined with the rear end fixation of the extrusion mechanism 6 and the upper extrusion plate 8, it can further improve the stability and firmness of the wiring and prevent the possibility of loosening. At the same time, the deformation mechanism 9 can directly fix the circular O-type connector and deform and extrude the single wire, which is conducive to improving the adaptability of the terminal block 1 to different connectors and further improving the use effect of the terminal block.

[0026] A friction mechanism 10 is annularly arranged on the upper surface of the extrusion mechanism 6. The interior of the friction mechanism 10 and the bottom of the upper extrusion plate 8 are both provided with low-temperature stretchable shape memory metal. When the extrusion mechanism 6, along with the friction mechanism 10 and the upper extrusion plate 8, are engaged and fixed, if the terminal block 1 is used in low-temperature winter conditions or in cold regions where the temperature drops below the preset value of the shape memory metal, the shape memory metal inside the friction mechanism 10 and the bottom of the upper extrusion plate 8 will stretch, causing the friction mechanism 10 and the upper extrusion plate 8 to retract and move in opposite directions. This improves the connection between the extrusion mechanism 6 and the upper extrusion plate 8. The compression clamping effect prevents the copper base of the connector from shrinking due to cold, which could reduce the clamping force. This automatically compensates for temperature deformation in low-temperature environments, ensuring the terminal block 1 secures the connector and preventing loosening at low temperatures. The friction mechanism 10 and the expandable portion of the upper compression plate 8 are designed with unidirectional protrusions, increasing friction during compression and ensuring a firm grip. Furthermore, when the connector encounters outward pulling force, the unidirectional protrusions provide good engagement, further preventing loosening and detachment.

[0027] The pressing column 4 includes a pressing head 41 fixed in the middle of the lower part of the pressing head 3. The pressing head 41 can be pressed down with the pressing head 3 to apply pressure to the connector and connect it to the contact seat 5. When the circular O-type connector is connected to the contact seat 5, the pressing head 41 will pass through the circular O-type connector and be inserted into the circular hole of the contact seat 5. At this time, the pressing head 41 can apply pressure to the connector and connect it to the contact seat 5. At the same time, the pressing head 41 passing through the circular O-type connector into the contact seat 5 can also position the connector to prevent it from falling off and ensure a stable connection. The pressing head 41 has a pressing rod 42 fixed on both sides of its outer side. The pressing rod 42 can move down with the pressing head 41. When pressing down to fix it, the pressing rod 42 can cooperate with the subsequent extrusion mechanism 6 so that one end of the extrusion mechanism 6 can be pushed to fix the rear end of the connector.

[0028] The extrusion mechanism 6 includes a contact plate 61 disposed below the pressing head 41, and the middle part of the contact plate 61 is fixedly connected to the contact seat 5. The middle of the contact plate 61 is provided with a circular through hole, which can pass through the contact plate 61 and be inserted into the contact seat 5 when the pressing head 41 is pressed down. A through hole 62 is opened on the surface of the contact plate 61, and a rotating connecting rod 63 passes through the middle of the through hole 62. A support frame 64 is rotatably mounted on the middle of the rotating connecting rod 63, and the bottom of the support frame 64 is connected to the bottom of the terminal block 1. The rotating rod 63 is fixedly connected to the left end of the rotating rod 63 and is rotatably mounted on the upper left end of the rotating rod 63. The rotating rod 63 is set as a rotating rod with the left end lower and the right end higher by the support frame 64. When the pressing rod 42 is pressed down, it will squeeze the high position of the right end of the rotating rod 63. With the rotation of the support frame 64, the right end of the rotating rod 63 can be moved down, so that the left end of the rotating rod 63 pushes the rotating rod 65 up. Thus, the rising of the pushing rod 65 can make a subsequent lifting and clamping action.

[0029] A sliding seat 66 is rotatably mounted on the upper end of the push rod 65, and a sliding rail 67 is slidably arranged in the middle of the sliding seat 66. A rotating plate 68 is fixed to the upper end of the sliding rail 67, and a rotating shaft 69 is rotatably mounted on one end of the rotating plate 68. The rotating plate 68 is rotatably connected to the contact plate 61 via the rotating shaft 69. When the push rod 65 is pushed upward, under the sliding cooperation of the sliding seat 66 and the sliding rail 67, and under the rotation of the rotating shaft 69, the push rod 65 can eventually drive the rotating plate 68 to rotate counterclockwise around the rotating shaft 69, thereby causing the rotation... The right end of plate 68 rises to perform a clamping action. A ball joint seat 611 is fixedly installed in the upper middle part of the rotating plate 68, and a lower pressing plate 610 is rotatably installed on the top of the ball joint seat 611. When the right end of the rotating plate 68 rises, it can drive the lower pressing plate 610 to rise together. At the same time, the ball joint seat 611 can make the lower pressing plate 610 deform flexibly. Thus, when the lower pressing plate 610 rotates and rises, the independent rotation of the ball joint seat 611 can better enable the lower pressing plate 610 to have a good contact area and clamping effect with the terminal.

[0030] Simultaneously, when the pressing head 3 is pressed down, the side pressing block 7 and the upper pressing plate 8 move down together. Since the upper pressing plate 8 and the lower pressing plate 610 are positioned opposite each other, when the pressing head 3 is pressed down, the lower pressing plate 610 and the upper pressing plate 8 eventually move in opposition. After the connector is fixed to the contact seat 5 by the pressing post 4, the opposition of the lower pressing plate 610 and the upper pressing plate 8 can press and fix the rear end of the connector, providing double fixation from both the front and rear ends. This improves the fixing effect of the connector and prevents it from easily falling off with a single fixation. Furthermore, fixing the connector at both ends only requires pressing... The operation can be completed simply by pressing the pressing head 3, which is simpler and helps to improve work efficiency. At the same time, the contact surfaces of the lower pressing plate 610 and the upper pressing plate 8 are roughened, which can ensure the stability of the fixing when the terminal is clamped. When the wire connected to the terminal block 1 is subjected to external force such as pulling, the main force will be applied to the rear fixing position of the lower pressing plate 610 and the upper pressing plate 8, which can reduce the force on the fixing position of the front contact seat 5 and prevent the contact seat 5 from being easily loosened due to direct force, so as to ensure the stability of the electrical connection at the contact seat 5 and improve the performance of the terminal.

[0031] To address the issue of terminals being incompatible with different connectors, thus reducing their effectiveness, such as... Figures 1-3 , Figure 6 as well as Figures 9-11 As shown: The positioning mechanism 20 includes a positioning cylinder 201 fixed to one side of the surface of the side pressure block 7, and a support spring 202 is installed in the middle of the inner side of the positioning cylinder 201. A locking head 203 is fixed to the front end of the support spring 202, and the rear end of the support spring 202 is fixedly connected to the positioning cylinder 201. The locking head 203 is elastically connected to the positioning cylinder 201 through the support spring 202. When the side pressure block 7 is pressed down by the pressing head 3, the locking head 203 with the arc surface can engage with the locking groove on the side of the terminal block 1 after the side pressure block 7 is pressed down to the position, so that the side pressure block 7 and the terminal block 1 can be locked and fixed. This can fix the position of the side pressure block 7 and the pressing head 3 after pressing, and ensure that the terminal block 1 is in a good wiring state.

[0032] The locking head 203 has a pressing block 205 at its front end, and a pressing rod 204 is fixed to the front end of the pressing block 205. The pressing rod 204 and the pressing block 205 are slidably connected to the terminal block 1. After the terminal block 1 is used or when the wiring needs to be separated, an external pressing tool such as a screwdriver is used to press the pressing rod 204 and the pressing block 205, causing the pressing block 205 to squeeze the locking head 203 and retract it into the positioning cylinder 201. This causes the locking head 203 and the side pressing block 7 to lose their locking ability with the terminal block 1, allowing the side pressing block 7 and the pressing head 3 to move upward again. Ultimately, this causes the terminal block 1 to lose its ability to fix the wiring, allowing the wiring to be separated.Figure 1 As shown, the positioning mechanism 20 is located in the side gap between the two terminal blocks 1, which avoids the possibility of accidental separation if the positioning mechanism 20 is located on the front of the terminal block 1.

[0033] The deformation mechanism 9 includes a mounting cavity 91 located below the inside of the pressing head 41, and a fixed cylinder 92 is fixed inside the mounting cavity 91. The fixed cylinder 92 has a movable cavity 93 inside, and multiple sets of fixed cylinders 92 are provided about the mounting cavity 91.

[0034] A memory spring 94 is installed in the middle of the inner side of the movable cavity 93. The memory spring 94 is made of memory metal that can stretch when cooled. A contact rod 95 is fixed to the bottom of the memory spring 94. The top of the memory spring 94 is fixedly connected to the movable cavity 93, and the contact rod 95 is elastically connected to the fixed cylinder 92 through the memory spring 94. When the terminal block 1 is connected to a circular O-type connector, the pressing column 4 will drive the fixed cylinder 92 and the contact rod 95 to pass through the circular O-type connector and insert into the contact seat 5 for fixation. When the terminal block 1 is connected to a single wire... When the conductor is being connected, as the pressing column 4 and the deformation mechanism 9 press down, multiple independently set contact rods 95, using memory springs 94, automatically deform and contact according to the shape of the single conductor to adapt to its shape. This maximizes the contact area between the multiple contact rods 95 and the single conductor. As the pressing column 4 and the contact rods 95 continue to press down, the larger contact area improves the firmness of the pressure fixation on the connected conductor. Combined with the rear end fixation of the extrusion mechanism 6 and the upper extrusion plate 8, this further improves the stability and firmness of the wiring, preventing the possibility of loosening.

[0035] Meanwhile, the deformation mechanism 9 can directly fix the circular O-type connector and deform and compress a single wire, which helps to improve the adaptability of the terminal block 1 to different connectors and further improve the performance of the terminal block. Through the memory spring 94 that can extend when cold, when a single wire is fixed in a low-temperature environment, the memory spring 94 will extend in the low-temperature environment to push the contact rod 95 down, so that the contact rod 95 can improve the fixing effect of the single wire and prevent the contact rod 95 from loosening due to the cold contraction of the wire at low temperatures.

[0036] To address the issue that when terminal blocks are used in low-temperature environments, the contraction of metal during operation can easily lead to loosening or even detachment of the fixing points, such as... Figures 1-5 as well as Figure 7 and Figure 8 As shown: The upper extrusion plate 8 includes a bonding plate 81 fixed to the bottom of the side pressure block 7. A movable cavity 82 is formed inside the lower part of the bonding plate 81. A movable seat 83 is installed inside the movable cavity 82, and a memory spring 84 is fixed to the upper part of the movable seat 83. The top of the memory spring 84 is fixedly connected to the bonding plate 81. The movable seat 83 is elastically connected to the bonding plate 81 through the memory spring 84. A helical tooth 85 is fixed to the bottom surface of the movable seat 83. When the side pressure block 7 is pressed down, it can drive the bonding plate 81 and the movable seat 83 to move down together, thereby engaging with the lower extrusion plate 610 to clamp and fix the rear end of the connector. The pressing action of the movable seat 83 and the helical teeth 85 helps to improve the friction of the fixation and ensure the firmness. At the same time, when the terminal block encounters an outward pulling force, the one-way protruding helical teeth 85 can also provide good biting ability to prevent the terminal block from loosening. In addition, when the terminal block 1 is used in winter low temperature or cold environment, and the temperature is lower than the preset value of the memory metal, the memory spring 84 will extend, so that the movable seat 83 and the helical teeth 85 can be pushed downward to improve the pressing and clamping effect of the lower pressing plate 610 and the bonding plate 81 on the terminal block, and avoid the possibility of the copper base of the terminal block shrinking due to cold, which may lead to a decrease in clamping force.

[0037] The friction mechanism 10 includes a movable seat 2 101 installed on the inner surface of the lower extrusion plate 610, and a memory spring 3 102 is fixedly installed inside the lower part of the movable seat 2 101. The bottom of the memory spring 3 102 is fixedly connected to the lower extrusion plate 610. The outer surface of the movable seat 2 101 is fixed with a helical tooth 2 103. When the lower extrusion plate 610 drives the movable seat 2 101 to move upward and press and fix it with the terminal head, the helical tooth 2 103 with one-way protrusion, in conjunction with the helical tooth 1 85 after engagement, can provide good biting ability and further prevent the terminal head from loosening. At the same time, the memory spring 3 102, which extends when cold, in conjunction with the memory spring 1 84, can automatically compensate for the possible deformation due to temperature in low temperature environment to ensure the fixing effect of the terminal seat 1 on the terminal head and further prevent the terminal head from loosening easily at low temperature.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A type of anti-loosening terminal block, comprising a terminal block (1) and a wire inlet (2) disposed at the center of the front end of the terminal block (1), characterized in that: A pressing head (3) is installed in the upper middle part of the terminal block (1), and a lower pressing column (4) is fixed in the lower middle part of the pressing head (3). The pressing head (3) is slidably connected to the terminal block (1) through the lower pressing column (4). A contact seat (5) is provided in the lower middle part of the inner side of the terminal block (1). A pressing mechanism (6) is provided on both sides of the contact seat (5). Side pressing blocks (7) are fixed in the lower part of both sides of the pressing head (3), and an upper pressing plate (8) is fixed in the bottom of the side pressing block (7). A positioning mechanism (20) is provided in the middle of one side of the side pressure block (7), a deformation mechanism (9) is installed in the middle of the lower part of the pressure column (4), and a friction mechanism (10) is provided in a ring on the upper surface of the extrusion mechanism (6).

2. The anti-loosening terminal block according to claim 1, characterized in that, The pressing column (4) includes a pressing head (41) fixed in the middle of the lower part of the pressing head (3), and pressing rods (42) are fixed on both sides of the outer side of the pressing head (41).

3. The anti-loosening terminal block according to claim 2, characterized in that, The extrusion mechanism (6) includes a contact plate (61) disposed below the lower pressure head (41), and the middle part of the contact plate (61) is fixedly connected to the contact seat (5). The surface of the contact plate (61) is provided with a through hole (62), and a rotating connecting rod (63) passes through the middle part of the through hole (62). A support frame (64) is rotatably installed in the middle part of the rotating connecting rod (63), and the bottom of the support frame (64) is fixedly connected to the bottom surface inside the terminal block (1). A push rod (65) is rotatably installed above the left end of the rotating connecting rod (63).

4. The anti-loosening terminal block according to claim 3, characterized in that, The upper end of the push rod (65) is rotatably mounted with a sliding seat (66), and a sliding rail (67) is slidably arranged in the middle of the sliding seat (66). A rotating plate (68) is fixed at the upper end of the sliding rail (67). A rotating shaft (69) is rotatably mounted at one end of the rotating plate (68), and the rotating plate (68) is rotatably connected to the contact plate (61) by means of the rotating shaft (69). A ball joint seat (611) is fixedly mounted in the upper middle part of the rotating plate (68), and a lower pressing plate (610) is rotatably mounted on the top of the ball joint seat (611).

5. The anti-loosening terminal block according to claim 1, characterized in that, The positioning mechanism (20) includes a positioning cylinder (201) fixed on one side of the surface of the side pressure block (7), and a support spring (202) is installed in the middle of the inner side of the positioning cylinder (201). A locking head (203) is fixed at the front end of the support spring (202), and the rear end of the support spring (202) is fixedly connected to the positioning cylinder (201). The locking head (203) is elastically connected to the positioning cylinder (201) through the support spring (202).

6. The anti-loosening terminal block according to claim 5, characterized in that, The front end of the locking head (203) is provided with a pressing block (205), and the front end of the pressing block (205) is fixed with a pressing rod (204). The pressing rod (204) and the pressing block (205) are slidably connected to the terminal block (1).

7. The anti-loosening terminal block according to claim 2, characterized in that, The deformation mechanism (9) includes an installation cavity (91) located below the inside of the lower pressure head (41), and a fixed cylinder (92) is fixed inside the installation cavity (91), and a movable cavity (93) is provided inside the fixed cylinder (92).

8. The anti-loosening terminal block according to claim 7, characterized in that, A memory spring (94) is installed in the middle of the inner side of the second movable cavity (93). A contact rod (95) is fixed at the bottom of the second memory spring (94). The top of the second memory spring (94) is fixedly connected to the second movable cavity (93), and the contact rod (95) is elastically connected to the fixed cylinder (92) through the second memory spring (94).

9. The anti-loosening terminal block according to claim 1, characterized in that, The upper extrusion plate (8) includes a bonding plate (81) fixed to the bottom of the side pressure block (7), and a movable cavity (82) is provided in the lower part of the interior of the bonding plate (81). A movable seat (83) is installed inside the movable cavity (82), and a memory spring (84) is fixed in the upper part of the movable seat (83). The top of the memory spring (84) is fixedly connected to the bonding plate (81). The movable seat (83) is elastically connected to the bonding plate (81) through the memory spring (84). A helical tooth (85) is fixed on the bottom surface of the movable seat (83).

10. The anti-loosening terminal block according to claim 4, characterized in that, The friction mechanism (10) includes a movable seat two (101) installed on the inner surface of the lower extrusion plate (610), and a memory spring three (102) is fixedly installed on the lower part of the movable seat two (101), and the bottom of the memory spring three (102) is fixedly connected to the lower extrusion plate (610). The outer surface of the movable seat two (101) is fixed with a helical tooth two (103).

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