Decoupled DC High-Current Flat-Friction Connector

Abstract

The unhooking type DC high current flat rubbing connector disclosed in the present invention includes a connector body, a pair of flat rubbing terminals are arranged in the connector body, spring sheets are arranged between the inner wall of the connector body and the corresponding flat rubbing terminals, a pressure block assembly hole is arranged on the connector body corresponding to the tail of the flat rubbing terminal, pressure blocks are arranged in the pressure block assembly holes, the pressure blocks are matched with the tail of the corresponding flat rubbing terminal, and a driving mechanism capable of lowering or raising the pressure blocks is arranged on the connector body; when the pressure blocks are lowered, the heads of the flat rubbing terminals are tilted to form an unhooking state. The advantage of the present invention is that by setting a driving mechanism to control the lifting and lowering of the pressure blocks, when the two connectors are docked or separated, the flat rubbing terminals do not contact and form an unhooking state; in this way, when docking or separating, a large plugging and unplugging force is not required, and friction loss is eliminated, which can greatly improve the plugging and unplugging times and service life of the connector.

Description

Technical Field

[0001] The present invention relates to a flat wipe connector, especially a hook - off type DC high - current flat wipe connector. Background Art

[0002] DC high - current flat wipe connectors are mainly used for DC power distribution and connection of DC batteries. Their application scenarios are mainly on construction machinery driven by DC batteries, such as battery - powered forklifts, electric vehicles, new energy vehicles, etc.

[0003] Currently, the DC high - current flat wipe connectors of the flat wipe terminal connection type on the market mainly consist of a connector body, flat wipe terminals, and spring pieces. The flat wipe terminals and spring pieces are arranged inside the connector body, and the spring pieces are arranged between the inner wall of the connector body and the flat wipe terminals. When two connectors are docked, a large axial insertion and extraction force needs to be applied to make the inclined surfaces of the two terminals slide relative to each other and friction parallelly to cause the spring pieces to deform and lock each other. After docking, the two terminals are tightly attached together under the elastic force of the spring pieces to provide a large enough current - conducting contact area. However, the disadvantages are as follows: In order to ensure good adhesion between the terminals and prevent accidental detachment during operation, the spring pieces need to provide a large enough elastic force, and this elastic force also causes a large insertion and extraction force during docking and generates a large amount of frictional loss, resulting in the shedding of the silver - plated layer on the terminal surface, further deteriorating the good contact of the terminals, increasing the contact resistance, and affecting the insertion and extraction times and service life of the connector. Therefore, its structure needs to be further improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hook - off type DC high - current flat wipe connector with a simple and reasonable structure, easy insertion and extraction, and long service life in view of the current situation of the prior art.

[0005] The technical solution adopted by the present invention to solve the above - mentioned technical problems is as follows:

[0006] A hook - off type DC high - current flat wipe connector includes a connector body. A pair of flat wipe terminals are arranged inside the connector body. Spring pieces are respectively arranged between the inner wall of the connector body and the corresponding flat wipe terminals. Pressing block assembly holes are arranged at the positions corresponding to the tails of the flat wipe terminals on the connector body, and pressing blocks are respectively arranged in the pressing block assembly holes. The pressing blocks are in abutting cooperation with the tails of the corresponding flat wipe terminals. A driving mechanism capable of lowering or raising the pressing blocks is arranged on the connector body. When the pressing blocks are lowered, the heads of the flat wipe terminals tilt to form a hook - off state.

[0007] Optimized technical measures also include:

[0008] The above-mentioned driving mechanism is a cam pressing plate mechanism. The cam pressing plate mechanism includes a wrench, a pin, a cam, a pressing plate, and a locking column. The pin passes through the through hole in the upper part of the locking column and is placed at one end of the wrench. The cam is eccentrically fixed on the pin and abuts against the pressing plate. The locking column passes through the pressing plate and is vertically connected to the connector body. The pressing plate is fixed to the pressing block.

[0009] An enlarged diameter section is provided at the upper part of the above-mentioned locking column. The through hole is radially arranged on the enlarged diameter section, and a stepped surface is formed at the lower end of the enlarged diameter section.

[0010] One end of the wrench connecting the pin is of a U-shaped structure, and the enlarged diameter section of the locking column is placed inside the U-shaped structure.

[0011] The above-mentioned cam is of a cylindrical structure, and the assembly hole of the cam is eccentrically arranged.

[0012] The number of the above-mentioned cams is two, and the two cams are fixed at both ends of the pin.

[0013] The above-mentioned driving mechanism is a sliding pressing plate mechanism. The sliding pressing plate mechanism includes a sliding pressing plate and a locking column. The locking column is vertically connected to the connector body. A sliding groove is axially arranged on the sliding pressing plate. A guide block adapted to the sliding groove is arranged at the upper end of the locking column. A cavity is arranged inside the sliding pressing plate.

[0014] The cross section of the above-mentioned guide block is of a "convex" shape structure.

[0015] The lower surface of the above-mentioned pressing block is an arc surface adapted to the tail of the flat wiping terminal.

[0016] A groove is arranged at the upper part of the above-mentioned flat wiping terminal. A support surface is formed at one end of the groove. The end of the spring piece abuts against the support surface; a convex block with a trapezoidal cross section is arranged at the lower part of the flat wiping terminal.

[0017] The decoupling type DC large current flat wiping connector of the present invention has a simple and reasonable structure. By setting a driving mechanism, the driving mechanism controls the lowering or rising of the pressing block. When the pressing block descends to press the tail of the flat wiping terminal to move downward, the head of the flat wiping terminal overcomes the elastic force of the spring piece to move upward, so that when the two connectors are docked or separated, the flat wiping terminals of the two connectors do not contact and form a decoupled state; in this way, when docking or separating, a large insertion and extraction force is not required, and frictional loss is also eliminated, which can greatly increase the insertion and extraction times and service life of the connector. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 It is an exploded schematic diagram of Embodiment 1 of the present invention;

[0020] Figure 3 is Figure 2 a schematic structural view of the middle pressing plate;

[0021] Figure 4 is a schematic structural view of the un-locked connected connectors according to the first embodiment of the present invention;

[0022] Figure 5 is a schematic cross-sectional structural view of the un-locked connected connectors according to the first embodiment of the present invention;

[0023] Figure 6 is a schematic structural view of the locked connected connectors according to the first embodiment of the present invention;

[0024] Figure 7 is a schematic cross-sectional structural view of the locked connected connectors according to the first embodiment of the present invention;

[0025] Figure 8 is a schematic structural view of the second embodiment of the present invention;

[0026] Figure 9 is an exploded view of the first embodiment of the present invention;

[0027] Figure 10 is a schematic cross-sectional structural view of the un-locked connected connectors according to the second embodiment of the present invention;

[0028] Figure 11 is a schematic cross-sectional structural view of the locked connected connectors according to the second embodiment of the present invention. Detailed Embodiment

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] As Figure 1 and Figure 11 show the schematic structural view of the present invention,

[0031] wherein the reference numerals are: connector body 1, pressing block assembly hole 1a, flat wiping terminal 2, groove 21, supporting surface 21a, convex block 22, spring piece 3, pressing block 4, arc surface 4a, wrench 51, large head end 51a, pin 52, cam 53, assembly hole 53a, pressing plate 54, locking column 55, through hole 55a, diameter-expanded section 55b, sliding pressing plate 61, sliding groove 61a, cavity 61b, locking column 62, guide block 62a, nut 7.

[0032] Embodiment 1, as Figure 1 and Figure 7 show,

[0033] Decoupling type DC large current flat friction connector, including a connector body 1, a pair of flat friction terminals 2 are arranged in the connector body 1, spring pieces 3 are respectively arranged between the inner wall of the connector body 1 and the corresponding flat friction terminals 2, a pressing block assembly hole 1a is arranged on the connector body 1 corresponding to the tail position of the flat friction terminal 2, a pressing block 4 is respectively arranged in the pressing block assembly hole 1a, and the pressing block 4 abuts and cooperates with the tail of the corresponding flat friction terminal 2. A driving mechanism capable of lowering or raising the pressing block 4 is arranged on the connector body 1; when the pressing block 4 descends, the head of the flat friction terminal 2 tilts up to form a decoupling state.

[0034] In this embodiment, the driving mechanism is a cam pressing plate mechanism. The cam pressing plate mechanism includes a wrench 51, a pin 52, a cam 53, a pressing plate 54 and a locking column 55. The pin 52 passes through a through hole 55a in the upper part of the locking column 55 and is placed at one end of the wrench 51. The cam 53 is eccentrically fixed on the pin 52 and abuts and cooperates with the pressing plate 54. The locking column 55 passes through the pressing plate 54 and is vertically connected to the connector body 1. The pressing plate 54 is fixed to the pressing block 4. The locking column 55 passes through the connector body 1 and is fixed at the lower end with a nut 7.

[0035] In the embodiment, an enlarged diameter section 55b is arranged at the upper part of the locking column 55. The through hole 55a is radially arranged on the enlarged diameter section 55b, and a stepped surface is formed at the lower end of the enlarged diameter section 55b. The stepped surface plays a role of vertical limit, which can improve the assembly efficiency and assembly accuracy.

[0036] In the embodiment, the end of the wrench 51 connected to the pin 52 is a U-shaped structure, and the enlarged diameter section 55b of the locking column 55 is placed in the U-shaped structure. The U-shaped structure provides space for accommodating the enlarged diameter section 55b of the locking column 55, making the structure more compact. The U-shaped structure also restricts the axial movement of the locking column 55.

[0037] The end of the wrench 51 far from the pin 52 extends to both sides to form a large head end 51a. When the wrench 51 is pulled, the user holds the end far from the pin 52. The large head end 51a is set to increase the area for convenient holding.

[0038] In the embodiment, the cam 53 is a cylindrical structure, and the assembly hole 53a of the cam 53 is eccentrically arranged.

[0039] In the embodiment, the number of cams 53 is 2, and the 2 cams 53 are fixed at both ends of the pin 52.

[0040] In the embodiment, the lower surface of the pressing block 4 is an arc surface 4a adapted to the tail of the flat friction terminal 2. The tail of the flat friction terminal 2 is a cylindrical structure. Designing the lower surface of the pressing block 4 as an arc surface 4a can better cooperate with the flat friction terminal 2.

[0041] In the embodiment, a groove 21 is provided at the upper part of the flat wiping terminal 2, and a support surface 21a is formed at one end of the groove 21. The end of the spring piece 3 abuts against the support surface 21a. A convex block 22 with a trapezoidal cross-section is provided at the lower part of the flat wiping terminal 2.

[0042] Working principle:

[0043] In this decoupling type DC high-current flat wiping connector, a cam pressing plate mechanism is provided. The cam pressing plate mechanism is composed of a wrench 51, a pin 52, a cam 53, a pressing plate 54 and a locking column 55. The pin 52 passes through the through holes 55a of the wrench 51 and the locking column 55, and the cam 53 is eccentrically fixed at both ends of the pin 52. Since the cam 53 is eccentrically arranged, the rotation of the cam 53 can drive the pressing plate 54 to move up and down.

[0044] As Figures 4 to 5 shown, when the wrench 51 is far from the connection end, the cam 53 forces the pressing plate 54 to press down, so that the pressing block 4 is at the lower limit position. The pressing block 4 presses down the tail end of the flat wiping terminal 2, and the front end of the flat wiping terminal 2 warps up against the elastic force of the spring piece 3. At this time, the connector is in a decoupled state. At this time, when the two connectors are inserted into each other, the flat wiping terminals 2 of the two connectors do not contact each other, and there is no frictional resistance.

[0045] As Figures 6 to 7 shown, after the two connectors are inserted in place, the wrench 51 is pulled, so that the wrench 51 is close to the connection end. At this time, the cam 53 rotates driven by the wrench 51, and the pressing block 4 rises to the upper limit position. The front end of the flat wiping terminal 2 moves down under the elastic force of the spring piece 3, and the tail end of the flat wiping terminal 2 moves up, so that the convex blocks 22 of the flat wiping terminals 2 of the two connectors contact and engage.

[0046] When the connector needs to be pulled out, the wrench 51 is pulled to be far from the connection end, so that the flat wiping terminals 2 of the two connectors are in a decoupled state, and then the two connectors can be easily separated.

[0047] Embodiment 2: As Figures 8 to 11 shown,

[0048] In this embodiment, the main structure of the connector is similar to that of Embodiment 1. The difference is that the driving mechanism is a sliding pressing plate mechanism. The sliding pressing plate mechanism includes a sliding pressing plate 61 and a locking column 62. The locking column 62 is vertically connected to the connector body 1. A sliding groove 61a is provided on the axis of the sliding pressing plate 61. A guide block 62a adapted to the sliding groove 61a is provided at the upper end of the locking column 62. A cavity 61b is provided inside the sliding pressing plate 61. The locking column 62 vertically passes through the connector body 1 and is fixed at the lower end with a nut 7.

[0049] In the embodiment, the cross-section of the guide block 62a is in a "convex" shape structure.

[0050] Working principle:

[0051] This decoupled DC large-current flat friction connector is provided with a sliding pressure plate mechanism. The sliding pressure plate mechanism includes a sliding pressure plate 61 and a locking post 62. A cavity 61b is provided inside the sliding pressure plate 61. The sliding pressure plate 61 can slide axially under the cooperation of a chute 61a and a guide block 62a at the upper end of the locking post 62. By changing the position of the sliding pressure plate 61, the lowering or rising of a pressure block 4 is controlled. When the pressure block 4 is located at the position of the cavity 61b, it rises due to the loss of obstruction. When the pressure block 4 leaves the position of the cavity 61b, the pressure block 4 descends.

[0052] As Figure 10 shown, when the pressure block 4 leaves the position of the cavity 61b, the sliding pressure plate 61 forces the pressure block 4 to be in the lower limit position. The pressure block 4 presses down the tail end of the flat friction terminal 2, and the front end of the flat friction terminal 2 warps upward against the elastic force of a spring piece 3. At this time, the connector is in a decoupled state. At this time, when two connectors are inserted into each other, the flat friction terminals 2 of the two connectors do not contact each other, and there is no frictional resistance.

[0053] As Figure 11 shown, after the two connectors are inserted into each other in place, the sliding pressure plate 61 is moved to make the pressure block 4 located at the position of the cavity 61b. At this time, the pressure block 4 rises to the upper limit position. The front end of the flat friction terminal 2 moves downward under the elastic force of the spring piece 3, and the tail end of the flat friction terminal 2 moves upward, so that the bumps 22 of the flat friction terminals 2 of the two connectors contact and engage.

[0054] When the connector needs to be pulled out, the sliding pressure plate 61 is moved to make the flat friction terminals 2 of the two connectors in a decoupled state, and then the two connectors can be easily separated.

[0055] When the connectors of the present invention are inserted and pulled out, the flat friction terminals 2 of the two connectors do not contact each other, and there is no frictional resistance during insertion and extraction. It overcomes the defect that a large insertion and extraction force is required during the insertion and extraction process of the existing connector, and at the same time avoids frictional loss and the shedding of the silver plating layer on the surface of the flat friction terminal 2 caused by friction, and can greatly increase the insertion and extraction times and service life of the connector.

[0056] In addition, for the connector of the present invention, its main structure is the same as that of the existing connector. Therefore, it can be compatible with the existing connector. When this connector is connected to the existing connector, since the existing connector does not have a decoupling function, only 50% of the frictional force and 50% of the insertion and extraction force can be reduced during insertion. Even so, the reduction of the insertion and extraction force and the frictional force can also greatly increase the service life.

[0057] The best embodiment of the present invention has been illustrated, and various changes or modifications made by those of ordinary skill in the art will not depart from the scope of the present invention.

Claims

1. Decoupled DC high-current flat wipe connector, including a connector body (1), wherein a pair of flat wipe terminals (2) are arranged inside the connector body (1), and it is characterized in that: A spring sheet (3) is respectively arranged between the inner wall of the connector body (1) and the corresponding flat wiping terminal (2); a pressure block assembly hole (1a) is arranged on the connector body (1) at the position corresponding to the tail of the flat wiping terminal (2); a pressure block (4) is respectively arranged in the pressure block assembly hole (1a); the pressure block (4) is abutted against the tail of the corresponding flat wiping terminal (2); and a driving mechanism capable of lowering or raising the pressure block (4) is arranged on the connector body (1); when the pressure block (4) is lowered, the head of the flat wiping terminal (2) is tilted to form a decoupled state; The driving mechanism is a sliding pressure plate mechanism, which includes a sliding pressure plate (61) and a locking column (62). The locking column (62) is vertically connected to the connector body (1). A sliding groove (61a) is arranged on the axis of the sliding pressure plate (61). A guide block (62a) adapted to the sliding groove (61a) is arranged at the upper end of the locking column (62). The sliding pressure plate (61) can slide axially in cooperation with the sliding groove (61a) and the guide block (62a) at the upper end of the locking column (62). The pressure block (4) is controlled to descend or ascend by changing the position of the sliding pressure plate (61). A cavity (61b) is arranged inside the sliding pressure plate (61). The cross section of the guide block (62a) is a "convex" shaped structure. The upper part of the flat rubbing terminal (2) is provided with a groove (21), one end of the groove (21) is formed with a support surface (21a), and the end of the spring sheet (3) abuts against the support surface (21a); the lower part of the flat rubbing terminal (2) is provided with a protrusion (22) with a trapezoidal cross-section structure; When the pressing block (4) leaves the cavity (61b), the sliding pressing plate (61) forces the pressing block (4) to be at the lower limit position, and the pressing block (4) presses the tail end of the flat rubbing terminal (2) downward, while the front end of the flat rubbing terminal (2) overcomes the elastic force of the spring sheet (3) and tilts upward. At this time, the connector is in a decoupled state. At this time, when the two connectors are plugged together, the flat rubbing terminals (2) of the two connectors do not contact each other. After the two connectors are inserted into place, the sliding pressure plate (61) is moved to position the pressure block (4) in the cavity (61b). At this time, the pressure block (4) rises to the upper limit position, and the front end of the flat wiping terminal (2) moves downward under the elastic force of the spring sheet (3), while the rear end of the flat wiping terminal (2) moves upward, so that the protrusions (22) of the flat wiping terminals (2) of the two connectors are in contact and locked.

2. The decoupling type DC high-current flat wiping connector according to claim 1, wherein: The lower surface of the pressing block (4) is an arc surface (4a) adapted to the tail of the flat wiping terminal (2).

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