CN111463626A

CN111463626A - Unhooking type direct-current large-current flat wiping connector

Info

Publication number: CN111463626A
Application number: CN202010386182.6A
Authority: CN
Inventors: 施丁
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-07-28

Abstract

The invention discloses a unhooking type direct-current large-current flat wiping connector which comprises a connector body, wherein a pair of flat wiping terminals are arranged in the connector body, spring pieces are respectively arranged between the inner wall of the connector body and the corresponding flat wiping terminals, pressing block assembly holes are formed in the connector body corresponding to the tail parts of the flat wiping terminals, pressing blocks are respectively arranged in the pressing block assembly holes and are in abutting fit with the tail parts of the corresponding flat wiping terminals, and a driving mechanism capable of enabling the pressing blocks to descend or ascend is arranged on the connector body; when the pressing block descends, the head part of the flat wiping terminal tilts to form a unhooking state. The invention has the advantages that the lifting of the pressing block is controlled by arranging the driving mechanism, so that the friction terminals are not contacted to form a unhooking state when the two connectors are butted or separated; therefore, when the connector is in butt joint or separation, a large plugging force is not needed, the friction loss is eliminated, the plugging times of the connector can be greatly improved, and the service life of the connector can be greatly prolonged.

Description

Unhooking type direct-current large-current flat wiping connector

Technical Field

The invention relates to a flat wiping connector, in particular to a unhooking type direct-current large-current flat wiping connector.

Background

The direct-current large-current flat wiping connector is mainly used for direct-current power distribution and connection of a direct-current battery, and is mainly applied to engineering machinery driven by the direct-current battery, a battery-entering forklift, an electric vehicle, a new energy automobile and the like.

The direct-current large-current flat wiping connector mainly comprises a connector body, flat wiping terminals and spring pieces, wherein the flat wiping terminals and the spring pieces are arranged in the connector body, and the spring pieces are arranged between the inner wall of the connector body and the flat wiping terminals. When two connectors are butted, a large axial insertion force needs to be applied, so that the inclined planes of the two terminals slide relatively and parallel to rub to enable the spring pieces to deform and lock with each other; after the opposite insertion, the two terminals are tightly attached together under the elasticity of the spring piece, and a sufficiently large current conduction contact area is provided. But has the following disadvantages: in order to ensure good adhesion between the terminals and prevent unintentional separation during operation, the spring plate provides a sufficient elastic force, which also causes a large insertion force to be applied during insertion and generates a large friction loss, causing the silver coating on the surface of the terminal to separate, thereby deteriorating good contact of the terminal, increasing contact resistance and affecting the number of times and life of the connector, and thus, the structure of the connector needs to be further improved.

Disclosure of Invention

The invention aims to solve the technical problem of providing the unhooked direct-current high-current flat wiping connector which is simple and reasonable in structure, easy to plug and unplug and long in service life aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the unhooking type direct-current large-current flat wiping connector comprises a connector body, wherein a pair of flat wiping terminals are arranged in the connector body, spring pieces are respectively arranged between the inner wall of the connector body and the corresponding flat wiping terminals, pressing block assembly holes are formed in the positions, corresponding to the tail parts of the flat wiping terminals, of the connector body, pressing blocks are respectively arranged in the pressing block assembly holes, the pressing blocks are in abutting fit with the tail parts of the corresponding flat wiping terminals, and a driving mechanism capable of enabling the pressing blocks to descend or ascend is arranged on the connector body; when the pressing block descends, the head part of the flat wiping terminal tilts to form a unhooking state.

The optimized technical measures further comprise:

the driving mechanism is a cam pressing plate mechanism, the cam pressing plate mechanism comprises a wrench, a pin, a cam, a pressing plate and a locking column, the pin penetrates through a through hole in the upper portion of the locking column and penetrates through one end of the wrench, the cam is eccentrically fixed on the pin and is abutted and matched with the pressing plate, the locking column penetrates through the pressing plate and is vertically connected to the connector body, and the pressing plate is fixed with the pressing plate.

The upper part of the locking column is provided with an expanding section, the through hole is radially arranged on the expanding section, and the lower end of the expanding section is provided with a step surface.

One end of the wrench connecting pin is of a U-shaped structure, and the diameter expanding section of the locking column is arranged in the U-shaped structure.

The cam is of a cylindrical structure, and the assembly hole of the cam is eccentrically arranged.

The number of the cams is 2, and the 2 cams are fixed at two ends of the pin.

Foretell actuating mechanism is sliding pressing plate mechanism, and sliding pressing plate mechanism is including sliding pressing plate and lock post, and the lock post is vertical to be connected on the connector body, and the axis is provided with the spout on the sliding pressing plate, and the upper end of lock post is provided with the guide block with spout looks adaptation, is provided with the cavity in the sliding pressing plate.

The section of the guide block is in a convex structure.

The lower surface of the pressing block is an arc surface matched with the tail of the flat wiping terminal.

The upper part of the flatting terminal is provided with a groove, one end of the groove is provided with a supporting surface, and the end part of the spring piece is abutted against the supporting surface; the lower part of the flat wiping terminal is provided with a convex block with a trapezoidal section.

The unhooking type direct-current large-current flat wiping connector is simple and reasonable in structure, the driving mechanism is arranged, the driving mechanism controls the pressing block to descend or ascend, when the pressing block descends to press the tail of the flat wiping terminal to move downwards, the head of the flat wiping terminal overcomes the elasticity of the spring piece to move upwards, and therefore when the two connectors are in butt joint or separation, the flat wiping terminals of the two connectors are not in contact and form an unhooking state; therefore, when the connector is in butt joint or separation, a large plugging force is not needed, the friction loss is eliminated, the plugging times of the connector can be greatly improved, and the service life of the connector can be greatly prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is an exploded view of the first embodiment of the present invention;

FIG. 3 is a schematic view of the platen of FIG. 2;

FIG. 4 is a schematic view of a connector according to a first embodiment of the present invention when the connector is unlocked;

fig. 5 is a schematic cross-sectional view of the connector according to the first embodiment of the present invention when the connector is unlocked;

fig. 6 is a schematic structural view of the connector according to the first embodiment of the present invention when the connector is locked;

fig. 7 is a schematic cross-sectional view of the connector according to the first embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 9 is an exploded view of the first embodiment of the present invention;

fig. 10 is a schematic sectional view showing the unlocked connector according to the second embodiment of the present invention;

fig. 11 is a schematic sectional view showing the connection and locking of the connectors according to the second embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in figures 1 and 11 which are schematic structural views of the present invention,

wherein the reference numerals are: the connector comprises a connector body 1, a pressing block assembling hole 1a, a flat friction terminal 2, a groove 21, a supporting surface 21a, a convex block 22, a spring piece 3, a pressing block 4, an arc surface 4a, a wrench 51, a large head end 51a, a pin 52, a cam 53, an assembling hole 53a, a pressing plate 54, a locking column 55, a through hole 55a, an expanding section 55b, a sliding pressing plate 61, a sliding groove 61a, a cavity 61b, a locking column 62, a guide block 62a and a nut 7.

In one embodiment, as shown in figures 1 and 7,

the unhooking type direct-current large-current flat wiping connector comprises a connector body 1, wherein a pair of flat wiping 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 wiping terminals 2, pressing block assembly holes 1a are formed in the connector body 1 corresponding to the tail portions of the flat wiping terminals 2, pressing blocks 4 are respectively arranged in the pressing block assembly holes 1a, the pressing blocks 4 are abutted and matched with the tail portions of the corresponding flat wiping terminals 2, and a driving mechanism capable of enabling the pressing blocks 4 to descend or ascend is arranged on the connector body 1; when the pressing block 4 descends, the head of the friction terminal 2 is tilted to form a unhooking state.

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 at the upper portion of the locking column 55 and penetrates one end of the wrench 51, the cam 53 is eccentrically fixed on the pin 52 and is abutted against the pressing plate 54, the locking column 55 passes through the pressing plate 54 and is vertically connected to the connector body 1, and the pressing plate 54 is fixed to the pressing plate 4. The locking post 55 passes through the connector body 1 and is secured at its lower end by a nut 7.

In the embodiment, the locking column 55 is provided with an expanded diameter section 55b at the upper part, the through hole 55a is radially arranged on the expanded diameter section 55b, and the lower end of the expanded diameter section 55b is provided with a step surface. The step surface plays a role in vertical limiting, and the assembling efficiency and the assembling accuracy can be improved.

In the embodiment, the wrench 51 is connected to the pin 52 with a U-shaped structure at one end, and the expanded diameter section 55b of the locking column 55 is placed in the U-shaped structure. The U-shaped structure provides space for receiving the expanded diameter section 55b of the locking post 55, making the structure more compact, and the U-shaped structure also limits the axial movement of the locking post 55.

Wrench 51 extends laterally away from pin 52 to form a larger head 51 a. When the wrench 51 is wrenched, the user holds the end away from the pin 52 with a hand, and the large end 51a is provided to increase the area, thereby facilitating the holding.

In the embodiment, the cam 53 has a cylindrical structure, and the fitting hole 53a of the cam 53 is eccentrically disposed.

In the embodiment, the number of the cams 53 is 2, and 2 cams 53 are fixed to both ends of the pin 52.

In the embodiment, the lower surface of the pressing block 4 is an arc surface 4a matched with the tail part of the flat wiping terminal 2. The tail of the flat wiping terminal 2 is of a cylindrical structure, and the lower surface of the pressing block 4 is designed into an arc surface 4a which can be better matched with the flat wiping terminal 2.

In the embodiment, the upper part of the flat wiping terminal 2 is provided with a groove 21, one end of the groove 21 is provided with a supporting surface 21a, and the end part of the spring piece 3 is abutted against the supporting surface 21 a; the lower portion of the flat wiping terminal 2 is provided with a projection 22 having a trapezoidal cross section.

The working principle is as follows:

the unhooking type direct-current large-current flat wiping connector is provided with a cam pressing plate mechanism, wherein the cam pressing plate mechanism is composed of a spanner 51, a pin 52, a cam 53, a pressing plate 54 and a locking column 55, the pin 52 penetrates through holes 55a of the spanner 51 and the locking column 55, the cam 53 is eccentrically fixed at two ends of the pin 52, and the pressing plate 54 can be driven to move up and down by the rotation of the cam 53 due to the fact that the cam 53 is eccentrically arranged.

As shown in fig. 4 to 5, when the wrench 51 is far away 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, the pressing block 4 presses down the tail end of the wipe terminal 2, and the front end of the wipe terminal 2 is tilted up against the elastic force of the spring piece 3, at this time, the connector is in the unhooking state. At this time, when the two connectors are inserted into each other, the flat terminals 2 of the two connectors do not contact each other, and there is no frictional resistance.

As shown in fig. 6 to 7, after the two connectors are inserted into position, the wrench 51 is pulled to make the wrench 51 approach the connection end, at this time, the cam 53 is driven by the wrench 51 to rotate, the pressing block 4 is lifted up to be at the upper limit, the front end of the wiping terminal 2 moves down under the elastic force of the spring piece 3, and the tail end of the wiping terminal 2 moves up to make the bumps 22 of the wiping terminals 2 of the two connectors contact and buckle.

When the connector needs to be pulled out, the wrench 51 is pulled away from the connection end to place the flat terminals 2 of the two connectors in an unhooked state, and then the two connectors can be easily separated.

Embodiment two, as shown in figures 8 to 11,

in this embodiment, the main structure of the connector is similar to that of the first embodiment, except that the driving mechanism is a sliding pressure plate mechanism, the sliding pressure plate mechanism includes a sliding pressure plate 61 and a lock cylinder 62, the lock cylinder 62 is vertically connected to the connector body 1, a sliding groove 61a is arranged on an axis of the sliding pressure plate 61, a guide block 62a matched with the sliding groove 61a is arranged at the upper end of the lock cylinder 62, and a cavity 61b is arranged in the sliding pressure plate 61. The lock cylinder 62 vertically penetrates the connector body 1, and the lower end is fixed by a nut 7.

In the embodiment, the guide block 62a has a cross section in a "convex" shape.

The working principle is as follows:

the unhooking type direct-current large-current flat wiping connector is provided with the sliding pressing plate mechanism, the sliding pressing plate mechanism comprises a sliding pressing plate 61 and a lock column 62, a cavity 61b is formed in the sliding pressing plate 61, the sliding pressing plate 61 can slide axially under the matching of a sliding groove 61a and a guide block 62a at the upper end of the lock column 62, and the pressing block 4 is controlled to descend or ascend through the position change of the sliding pressing plate 61. When the compact 4 is in the position of the cavity 61b, it rises due to the loss of the blocking; when the pressing block 4 leaves the position of the cavity 61b, the pressing block 4 descends.

As shown in fig. 10, when the pressing block 4 leaves the position of the cavity 61b, the sliding pressing plate 61 forces the pressing block 4 to be at the lower limit, the pressing block 4 presses the tail end of the flat terminal 2 downwards, and the front end of the flat terminal 2 is lifted up against the elastic force of the spring piece 3, at this time, the connector is in the unhooking state. At this time, when the two connectors are inserted into each other, the flat terminals 2 of the two connectors do not contact each other, and there is no frictional resistance.

As shown in fig. 11, after the two connectors are inserted into each other, the sliding pressing plate 61 is moved to position the pressing block 4 in the cavity 61b, and at this time, the pressing block 4 is lifted to be at the upper limit position, the front end of the wiping terminal 2 moves downward under the elastic force of the spring piece 3, and the tail end of the wiping terminal 2 moves upward, so that the bumps 22 of the wiping terminals 2 of the two connectors are engaged with each other.

When it is necessary to pull out the connectors, the sliding pressing plate 61 is moved to place the flat terminals 2 of the two connectors in an unhooked state, and then the two connectors can be easily separated.

When the connector is plugged, the flat friction terminals 2 of the two connectors are not contacted with each other, so that the frictional resistance during plugging is avoided, the defect that a large plugging force is required in the plugging process of the conventional connector is overcome, meanwhile, the friction loss and the shedding of the silver coating on the surface of the flat friction terminal 2 caused by friction are avoided, and the plugging times and the service life of the connector can be greatly improved.

In addition, the main structure of the connector of the invention is the same as the structure of the existing connector, therefore, the connector can be compatible with the existing connector, when the connector is connected with the existing connector, because the existing connector does not have the unhooking function, the friction force and the insertion and extraction force can be reduced by 50 percent when the connector is inserted, even if the friction force and the insertion and extraction force are reduced, the service life can be greatly prolonged.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the invention.

Claims

1. Unhook formula direct current heavy current flat connector of wiping, including connector body (1), connector body (1) in be provided with a pair of flat terminal (2), the inner wall of connector body (1) and corresponding flat terminal (2) between be provided with spring leaf (3), characterized by respectively: the connector body (1) is provided with press block assembly holes (1a) corresponding to the tail parts of the friction terminals (2), press blocks (4) are respectively arranged in the press block assembly holes (1a), the press blocks (4) are abutted and matched with the tail parts of the corresponding friction terminals (2), and the connector body (1) is provided with a driving mechanism capable of enabling the press blocks (4) to descend or ascend; when the pressing block (4) descends, the head of the flat wiping terminal (2) tilts to form a unhooking state.

2. The unhooked direct current high-current flat wiping connector according to claim 1, wherein: the driving mechanism is a cam pressing plate mechanism, the cam pressing plate mechanism comprises a spanner (51), a pin (52), a cam (53), a pressing plate (54) and a locking column (55), the pin (52) penetrates through a through hole (55a) in the upper portion of the locking column (55) and penetrates through one end of the spanner (51), the cam (53) is eccentrically fixed on the pin (52) and is matched with the pressing plate (54) in an abutting mode, the locking column (55) penetrates through the pressing plate (54) and is vertically connected to the connector body (1), and the pressing plate (54) is fixed with the pressing block (4).

3. The unhooked direct current high-current flat wiping connector according to claim 2, wherein: the upper part of the locking column (55) is provided with an expanding section (55b), the through hole (55a) is radially arranged on the expanding section (55b), and the lower end of the expanding section (55b) is provided with a step surface.

4. The unhooked direct current high current wipe connector of claim 3, wherein: one end of the wrench (51) connecting pin (52) is of a U-shaped structure, and the diameter expanding section (55b) of the locking column (55) is arranged in the U-shaped structure.

5. The unhooked direct current high current wipe connector of claim 4, wherein: the cam (53) is of a cylindrical structure, and an assembly hole (53a) of the cam (53) is eccentrically arranged.

6. The unhooked direct current high-current flat wiping connector according to claim 5, wherein: the number of the cams (53) is 2, and the 2 cams (53) are fixed at two ends of the pin (52).

7. The unhooked direct current high-current flat wiping connector according to claim 1, wherein: the driving mechanism is a sliding pressure plate mechanism, the sliding pressure plate mechanism comprises a sliding pressure plate (61) and a lock cylinder (62), the lock cylinder (62) is vertically connected to the connector body (1), a sliding groove (61a) is formed in the axis of the sliding pressure plate (61), a guide block (62a) matched with the sliding groove (61a) is arranged at the upper end of the lock cylinder (62), and a cavity (61b) is formed in the sliding pressure plate (61).

8. The unhooked direct current high current wipe connector of claim 7, wherein: the cross section of the guide block (62a) is in a convex structure.

9. The unhooked direct current high current flat wiping connector according to any one of claims 1 to 8, wherein: the lower surface of the pressing block (4) is an arc surface (4a) matched with the tail of the flat wiping terminal (2).

10. The unhooked direct current high current wipe connector of claim 9, wherein: a groove (21) is formed in the upper portion of the friction terminal (2), a supporting surface (21a) is formed at one end of the groove (21), and the end portion of the spring piece (3) is abutted to the supporting surface (21 a); the lower part of the flat wiping terminal (2) is provided with a convex block (22) with a trapezoidal section.