CN209880960U - Automatic deviation-rectifying opposite-inserting mechanism - Google Patents

Abstract

The utility model discloses an automatic deviation rectifying and opposite inserting mechanism, which has the technical scheme that the automatic deviation rectifying and opposite inserting mechanism is an installation part which is used for being installed on EOL testing equipment; a bearing seat connected with the mounting piece; the connection between the mounting and the carrier is a relatively movable connection, the relative movement having a non-longitudinal component; the bearing seat is provided with the forward correction block, the correction block is provided with a right opposite side and a guide inclined plane, the bearing seat is driven to move forward, if the guide inclined plane is in contact with the battery module first, the bearing seat is guided by the guide inclined plane to be attached to the battery module to perform the relative movement until the right opposite side is in contact with the battery module, and when the deviation in an error allowable range exists in the overall dimension of the battery module to be tested, the bearing seat moves under the guide inclined plane of the correction block until the right opposite side is in contact with the battery module to be corrected, so that the plug can automatically correct the deviation according to the battery module to be tested, and the plug and the socket are better inserted.

Description

Automatic deviation-rectifying opposite-inserting mechanism

Technical Field

The utility model relates to a battery module test equipment technical field, more specifically say, it relates to an automatic deviation rectification is to inserting mechanism for battery module EOL test equipment.

Background

In the testing process after the power battery module in the new energy industry is assembled, the temperature and the voltage in the battery module need to be tested, and the power battery module is connected with an external testing plug in an opposite-inserting mode through an inner inserting seat of the battery module. The traditional test method mainly depends on manual detection, but due to the huge data volume and the complex and complicated means of a test tool, the traditional test method can not meet the requirement of high efficiency of product test in the current production. At present, automatic EOL (End of Line Test/production Line off-Line Test) testing equipment for comprehensive testing of battery module EOL (End of Line Test) is available in the market, and good counter sound of the market is obtained. However, in these automatic EOL testing apparatuses, the position of the plug of the docking mechanism relative to the testing bearing plane is fixed, and when the external dimensions of the battery module to be tested have a deviation within an error tolerance range, the plug of the docking mechanism and the socket of the battery module to be tested may not be well docked, and even the plug and the socket may be worn.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic mechanism of inserting of rectifying reaches the plug and can carry out automatic rectifying according to the battery module that awaits measuring, makes plug and socket better to the purpose of inserting.

The above technical purpose of the present invention can be achieved by the following technical solutions: automatic mechanism is inserted to rectifying includes:

a mount for mounting on an EOL test apparatus;

a bearing seat connected with the mounting piece;

the plug is arranged on the bearing seat and is used for longitudinally inserting the battery module to be tested;

the method is characterized in that:

the connection between the mounting and the carrier is a relatively movable connection, the relative movement having a non-longitudinal component;

the correction block is arranged on the bearing seat and provided with a right side and a facing side and a guide inclined plane, and in the process that the bearing seat is driven to move forwards, if the guide inclined plane is firstly contacted with the battery module, the bearing seat is guided by the guide inclined plane to move relative to the battery module until the right side and the facing side are contacted with the battery module.

Preferably, the relative movement between the mounting member and the carrier has a transverse component, a transverse deviation-correcting assembly is connected between the mounting member and the carrier, the transverse deviation-correcting assembly comprises a transverse guide block and a transverse guide rail which can transversely move relative to each other, one of the transverse guide block and the transverse guide rail is connected with the carrier, and the other one of the transverse guide block and the transverse guide rail is connected with the mounting member;

the correction block comprises a transverse correction block, the transverse correction block is provided with a right opposite surface and a guide inclined surface, the bearing seat is driven to move forwards, if the guide inclined surface of the transverse correction block contacts the battery module firstly, the bearing seat is guided by the guide inclined surface of the transverse correction block to be attached to the battery module to move transversely, and the transverse guide block moves transversely relative to the transverse guide rail until the right opposite surface of the transverse correction block contacts the battery module.

As a further optimization, the transverse deviation rectifying assembly comprises two transverse limiting blocks, and the two transverse limiting blocks are respectively positioned at the front end and the rear end of the transverse guide block and/or the transverse guide rail in the transverse moving direction.

As a further optimization, a buffer spring is arranged between the transverse correcting block and the bearing.

Preferably, the movement between the mounting member and the bearing seat has a vertical component, a vertical deviation-correcting assembly is connected between the mounting member and the bearing seat and comprises a vertical guide block and a vertical guide rail which can vertically move relatively, one of the vertical guide block and the vertical guide rail is connected with the bearing seat, and the other one of the vertical guide block and the vertical guide rail is connected with the mounting member;

correct the piece including vertical correction piece, vertical correction piece has just face and guide inclined plane, and the bearing seat is driven the in-process that moves forward, if the guide inclined plane of vertical correction piece contacts the battery module earlier, then the bearing seat pastes the battery module under the guide on the guide inclined plane of vertical correction piece and carries out vertical removal, vertical guide block vertical removal relative vertical guide rail, until vertical correct the just face-to-face contact battery module of piece.

As further optimization, the vertical deviation rectifying assembly comprises a vertical limiting block and a vertical fixing plate, one of the vertical guide block and the vertical guide rail is connected with the bearing seat, the other vertical guide block is connected with the vertical fixing plate, the mounting part is mounted together with the vertical fixing plate, the vertical fixing plate is provided with a vertical limiting opening, the vertical limiting block is connected with the bearing seat, the vertical limiting block is inserted into the vertical limiting opening, and when the bearing seat is vertically moved, the vertical limiting block vertically moves in the vertical limiting opening.

As further optimization, a buffer spring is arranged between the vertical correcting block and the bearing seat.

As further optimization, the mounting piece is provided with a vertical waist-shaped mounting hole, the vertical fixing plate is provided with a mounting hole, and the mounting piece and the vertical fixing plate are mounted together by sequentially inserting the screws into the mounting holes in the mounting piece and the mounting holes in the vertical fixing plate.

Preferably, the amount of the vertical position of the plug which can be adjusted through the mounting hole is larger than the amount of the vertical position of the plug which can be adjusted through the vertical deviation rectifying assembly.

As a further optimization, the bearing seat is provided with a plug assembly, the plug assembly comprises a plug mounting plate, a floating block and a positioning pin, the plug is arranged on the floating block, the floating block is mounted on the plug mounting plate through the positioning pin, the plug mounting plate is connected with the bearing seat, and the floating block can swing relative to the plug mounting plate by taking the positioning pin as an axis.

To sum up, the utility model discloses following beneficial effect has: this automatic mechanism of inserting of rectifying, the in-process that the bearing seat was driven to move forward and realized plug and the battery module of awaiting measuring to insert, when the overall dimension of the battery module of awaiting measuring has the deviation in the error tolerance, the bearing seat removes under the guide of the guide inclined plane of correcting the piece, until correcting the face-to-face contact battery module of piece to reached the plug can carry out automatic rectifying according to the battery module of awaiting measuring, make the purpose that plug and socket are inserted better.

Drawings

FIG. 1 is a schematic structural diagram of a partially exploded view of an automatic deviation rectifying and interpolation mechanism in an embodiment;

FIG. 2 is a schematic structural diagram of another perspective of the automatic deviation rectifying and interpolation mechanism in the embodiment after being partially disassembled;

FIG. 3 is a schematic diagram of a matching relationship between the automatic deviation rectifying and inserting mechanism and the battery module to be detected in the embodiment;

FIG. 4 is a schematic structural diagram of a plug assembly of the automatic deviation rectifying and plugging mechanism in the embodiment;

FIG. 5 is an enlarged schematic view of a partially cut-away fitting relationship between a plug mounting plate and a slider of a plug assembly of the automatic deviation rectifying mechanism in the embodiment;

FIG. 6 is a partially exploded schematic view of the plug assembly of the automatic deviation rectification mechanism in the embodiment.

In the figure: 1. a plug assembly; 11. a plug; 12. the plug propels the cylinder; 13. connecting blocks; 14. a connecting seat; 15. a plug mounting plate; 16. a slider; 161. a limiting hole; 162. a through hole; 2. a bearing seat; 21. a linkage plate; 3. a transverse deviation rectifying component; 31. a transverse fixing plate; 32. a transverse guide block; 33. a transverse guide rail; 34. a transverse limiting block; 4. a vertical deviation rectifying assembly; 41. a vertical fixing plate; 411. a vertical limiting port; 412. mounting holes; 42. a vertical guide block; 43. a vertical guide rail; 44. a vertical limiting block; 5. a transverse correction block; 50. a guide post; 51. a bayonet; 511. a lead-in inlet; 512. the two faces are opposite; 6. a vertical correction block; 60. a guide post; 61. a guide ramp; 62. the two faces are opposite; 63. a vertical adjusting screw; 7. a mounting member; 71. mounting holes; 81. positioning pins; 82. a spacing pin; 83. a spring adjusting screw; 84. a return spring; 91. advancing the guide rail; 92. a pushing guide block; 100. a battery module is provided.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that, with reference to the drawings, the longitudinal direction in the present embodiment is the front-back direction in the drawings, the transverse direction is the left-right direction in the drawings, and the vertical direction is the up-down direction.

Fig. 1 and fig. 2 respectively show the structure that two different visual angles of automatic deviation rectifying and inserting mechanism see, this automatic deviation rectifying and inserting mechanism includes plug subassembly 1, bears seat 2, horizontal deviation rectifying subassembly 3, vertical deviation rectifying subassembly 4, horizontal correction piece 5, vertical correction piece 6 and installed part 7, plug subassembly 1, vertical correction piece 4 and horizontal correction piece 3 are all installed on bearing seat 2, installed part 7 is used for installing this automatic deviation rectifying and inserting mechanism on EOL test equipment. As shown in fig. 3, the header assembly 1 includes a header 11, and the header 11 is used to longitudinally mate with a socket of the battery module 100 to be tested. Horizontal subassembly 3 and the vertical subassembly 4 of rectifying are installed between installed part 7 and carrier 2 for the connection between installed part 7 and the carrier 2 is the connection of relative movement, and this relative movement has non-fore-and-aft component, including horizontal component and vertical component in this embodiment, horizontal subassembly 3 of rectifying is used for realizing the relative movement of horizontal component, and vertical subassembly 4 of rectifying is used for realizing the relative movement of vertical component. The transverse correcting block 5 and the vertical correcting block 6 are correcting blocks having opposite faces and a guide inclined face, and in the process that the bearing seat 2 is driven by a driving mechanism on the EOL testing equipment to move forward close to the battery module 100, if the guide inclined face of the correcting block contacts the battery module 100 first, the bearing seat 2 moves relative to the battery module 100 under the guide of the guide inclined face until the opposite faces of the correcting block contact the battery module 100. In order to achieve a relative movement of the mounting member 7 and the carrier 2, in other embodiments, a relative movement in multiple directions may also be achieved by means of a universal joint, a ball connector or the like.

As shown in fig. 1, 2 and 3, the transverse correcting block 5 is provided with a trumpet-shaped bayonet 51, the bayonet 51 comprises a guide inlet 511 and a right opposite surface 512, the guide inlet 511 is gradually reduced from outside to inside and is in an arc transition, and the guide inlet 511 is a guide inclined surface of the transverse correcting block 5. Since the battery module 100 is fixed, if the guide inlet 511 of the transverse correcting block 5 contacts the battery module 100 first in the process that the carrier 2 is driven to move forward, the carrier 2 moves transversely along the battery module 100 under the guide of the guide inlet 511 of the transverse correcting block 5 until the opposite surface 512 of the transverse correcting block 5 contacts the battery module 100. Be equipped with guide post 50 between horizontal correction piece 5 and the carrier 2, be equipped with buffer spring (not shown in the figure) between guide post 50 and the carrier 2, when the stroke that carrier 2 and horizontal correction piece 5 moved towards battery module 100 was too long, buffer spring cushioned the back that contracts. The transverse deviation rectifying assembly 3 comprises a transverse fixing plate 31, a transverse guide block 32 and a transverse guide rail 33, wherein the transverse guide block 32 is installed on the front end face of the transverse fixing plate 31, the transverse guide block 32 is installed on the transverse guide rail 33, and the transverse guide block 32 and the transverse guide rail 33 are limited in the vertical direction. The bearing seat 2 is provided with a linkage plate 21, the transverse guide rail 33 is arranged on the rear end face of the linkage plate 21, the bearing seat 2 is arranged on the front end face of the linkage plate 21, and the transverse fixing plate 31 is positioned at the rear side of the linkage plate 21. When the carriage 2 is moved laterally, the lateral guide rail 33 is moved laterally relative to the lateral guide block 32, so that the carriage 2 is moved laterally relative to the mounting member 7. Preferably, the left end and the right end of the front end surface of the transverse fixing plate 31 are both provided with a transverse limiting block 34, and the transverse limiting blocks 34 are used for limiting and preventing the transverse guide block 32 from sliding out of the transverse guide rail 33.

As shown in fig. 1, 2 and 3, the vertical correcting block 6 is provided with a guiding inclined surface 61 and a facing surface 62, and when the carrier 2 is driven to move forward, if the guiding inclined surface 61 of the vertical correcting block 6 contacts the battery module 100 first, the carrier 2 moves vertically along the battery module 100 under the guidance of the guiding inclined surface 61 of the vertical correcting block 6 until the facing surface 62 of the vertical correcting block 6 contacts the battery module 100. A guide post 60 is arranged between the vertical correcting block 6 and the bearing seat 2, and a buffer spring is arranged between the guide post 60 and the bearing seat 2. In the process that the vertical correcting block 6 contacts the battery module 100, the vertical correcting block 6 is stressed to move transversely towards the bearing seat 2, and the buffer spring plays a role in buffering and resetting driving. Vertical adjusting screws 63 are arranged above the vertical correcting blocks 6, and the vertical adjusting screws 63 are used for adjusting the vertical installation positions of the vertical correcting blocks 6. The vertical deviation rectifying assembly 4 comprises a vertical fixing plate 41, a vertical guide block 42 and a vertical guide rail 43, wherein the vertical guide rail 43 is installed on the rear end face of the transverse fixing plate 31, and the vertical guide block 42 is installed on the front end face of the vertical fixing plate 41. The vertical guide block 42 is installed on the vertical guide rail 43, and the vertical guide block 42 and the vertical guide rail 43 are limited in the horizontal direction. When the bearing seat 2 vertically moves, the vertical guide rail 43 vertically moves relative to the vertical guide block 42, so that the bearing seat 2 vertically moves relative to the mounting part 7.

As shown in fig. 1, fig. 2 and fig. 3, as an optimization, the vertical deviation correcting assembly 4 includes a vertical limiting block 44, the vertical limiting block 44 is installed on the rear end surface of the transverse fixing plate 31, the vertical fixing plate 41 is provided with a vertical limiting opening 411, the vertical limiting block 44 is inserted into the vertical limiting opening 411, and the vertical height of the vertical limiting opening 411 is greater than the vertical height of the portion of the vertical limiting block 44 inserted into the vertical limiting opening 411. Because self gravity, vertical stopper 44 is contradicted with the lower extreme of vertical spacing mouth 411 under the normality, when carrying out vertical automatic deviation rectification, vertical stopper 44 rebound, and vertical stopper 44 cooperates with vertical spacing mouth 411 and is used for restricting vertical regulating variable.

As shown in fig. 1, 2 and 3, a mounting member 7 is mounted at the rear end of the vertical fixing plate 41, and the mounting member 7 is used for mounting the automatic deviation rectifying and inserting mechanism on the EOL testing equipment. The mounting piece 7 is provided with a vertical waist-shaped mounting hole 71, the mounting hole 412 is provided in the vertical fixing plate 41, the mounting hole 71 and the mounting hole 412 are sequentially inserted by screws, the mounting between the mounting piece 7 and the vertical fixing plate 41 is fixed, the mounting hole 71 is arranged in the waist-shaped mounting hole, the vertical fixing plate 41 can be higher or lower as required when the mounting piece 7 is mounted, the vertical position of the plug 11 is roughly arranged, the vertical height of the waist-shaped mounting hole 71 is larger than the vertical height of the vertical limiting opening 411, the waist-shaped mounting hole 71 is roughly arranged in the vertical position of the plug 11, and the vertical deviation correcting assembly 4 is used for finely adjusting the vertical position of the plug 11. The amount by which the vertical position of the plug 11 is adjustable through the mounting hole 71 is greater than the amount by which the vertical position of the plug 11 is adjustable through the vertical deviation correcting assembly 4.

Referring to fig. 4, 5 and 6, the floating plug assembly 1 includes a plug propulsion cylinder 12, a connection block 13, a connection base 14, a plug mounting plate 15 and a floating block 16, wherein a telescopic rod of the plug propulsion cylinder 12 is mounted with the connection block 13, the connection block 13 is mounted and fixed on the connection base 14, and the plug mounting plate 15 is mounted and fixed on the connection base 14. The plug 11 is provided on the slider 16, and the slider 16 is mounted on the plug mounting plate 15 via a positioning pin 81 and a stopper pin 82, the positioning pin 81 being located on the rear side of the stopper pin 82. The floating block 16 is provided with a limiting hole 161, the limiting pin 82 penetrates the limiting hole 161, a certain gap exists between the limiting hole 161 and the limiting pin 82, the floating block 16 can swing by taking the positioning pin 81 as a shaft, the limiting pin 82 limits the swing amplitude of the floating block 16, when a socket on the battery module 100 to be tested has deviation within an error allowable range due to welding, the plug 11 and the floating block 16 can swing relative to the plug mounting plate 15 to realize automatic correction and adjustment, so that the plug 11 and the socket can be better plugged. The slider 16 can freely swing 0-3 degrees in two directions and can be finely adjusted within a small angle range. The gap between the limit pin 82 and the limit hole 161 affects the swing amplitude of the slider 16, and in this embodiment, a gap of 0.55mm exists between the limit pin 82 and the limit hole 161.

As shown in fig. 4, 5, and 6, for optimization, the slider 16 has a through hole 162, the through hole 162 is perpendicular to the limiting hole 161, the adjusting screws 83 are inserted into the left and right ends of the through hole 162, and the return spring 84 is disposed between the two adjusting screws 83 and the slider 16. When the floating block 16 swings relative to the plug mounting plate 15, the two return springs 84 are stretched and compressed one by one, and the elastic force generated by the two return springs 84 can drive the floating block 15 to automatically swing and reset. The two return springs 84 are symmetrically arranged, so that after the floating block 16 swings, returns to the center, the stress balance of the two sides of the floating block 16 can be adjusted, the adjusting screw 83 presses the return springs 84 into the through hole 162 or moves outwards to loosen the return springs 84, and the stress balance of the two sides of the floating block 16 is adjusted.

Referring to fig. 4 and 6, after the plug propulsion cylinder 12 is started, the telescopic rod thereof extends, and the telescopic rod drives the connecting seat 14 and the plug mounting plate 15 to move through the connecting block 13, so that the plug 11 on the floating block 16 is inserted into the socket of the battery module 100. Bearing seat 2 is equipped with propulsion guide rail 91, and connecting seat 14 is equipped with propulsion guide block 92, and propulsion guide block 92 blocks into propulsion guide rail 91, and when plug impels cylinder 12 and drives connecting seat 14 and move, propulsion guide block 92 is along propulsion guide rail 91 straight ahead or backward movement. The cooperation of the push guide block 92 and the push guide rail 91 better ensures the linear motion of the connecting seat 14, and further better ensures the linear motion of the plug 11.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the above embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.

Claims (10)

1. Automatic mechanism is inserted to rectifying includes:

a mounting (7) for mounting on an EOL testing apparatus;

a bearing seat (2) connected with the mounting piece (7);

the plug (11) is arranged on the bearing seat (2) and is used for longitudinally inserting the battery module to be tested;

the method is characterized in that:

the connection between the mounting (7) and the carrier (2) is a relatively movable connection, the relative movement having a non-longitudinal component;

the correction blocks (5 and 6) which face forwards are arranged on the bearing seat (2), the correction blocks (5 and 6) are provided with a front face and a guide inclined plane, and in the process that the bearing seat (2) is driven to move forwards, if the guide inclined plane firstly contacts the battery module, the bearing seat (2) is guided by the guide inclined plane to cling to the battery module to perform the relative movement until the front face contacts the battery module.

2. The automatic deviation rectifying and inserting mechanism according to claim 1, wherein:

the relative movement between the mounting piece (7) and the bearing seat (2) has a transverse component, a transverse deviation rectifying assembly (3) is connected between the mounting piece (7) and the bearing seat (2), the transverse deviation rectifying assembly (3) comprises a transverse guide block (32) and a transverse guide rail (33) which can transversely move relatively, one of the transverse guide block (32) and the transverse guide rail (33) is connected with the bearing seat (2), and the other one is connected with the mounting piece (7);

the correction block comprises a transverse correction block (5), the transverse correction block (5) is provided with a positive surface (512) and a guide inclined surface (511), in the process that the bearing seat (2) is driven to move forwards, if the guide inclined surface (511) of the transverse correction block (5) contacts the battery module, the bearing seat (2) is guided by the guide inclined surface (511) of the transverse correction block (5) to move transversely along with the battery module, and the transverse guide block (32) moves transversely relative to the transverse guide rail (33) until the positive surface (512) of the transverse correction block (5) contacts the battery module.

3. The automatic deviation rectifying and inserting mechanism according to claim 2, wherein: the transverse deviation rectifying assembly (3) comprises two transverse limiting blocks (34), and the two transverse limiting blocks (34) are respectively positioned at the front end and the rear end of the transverse guide block (32) and/or the transverse guide rail (33) in the transverse moving direction.

4. The automatic deviation rectifying and inserting mechanism according to claim 2, wherein: a buffer spring is arranged between the transverse correcting block (5) and the bearing seat (2).

5. The automatic deviation rectifying and inserting mechanism according to claim 1 or 2, wherein: the movement between the mounting piece (7) and the bearing seat (2) has a vertical component, a vertical deviation rectifying assembly (4) is connected between the mounting piece (7) and the bearing seat (2), the vertical deviation rectifying assembly (4) comprises a vertical guide block (42) and a vertical guide rail (43) which can vertically move relatively, one of the vertical guide block (42) and the vertical guide rail (43) is connected with the bearing seat (2), and the other vertical guide block is connected with the mounting piece (7);

correct the piece including vertical correction piece (6), vertical correction piece (6) have just opposite face (62) and guide inclined plane (61), bear seat (2) by the in-process that the drive moved forward, if vertical guide inclined plane (61) of correcting piece (6) contact battery module earlier, then bear seat (2) and paste battery module and carry out vertical movement under the guide of vertical guide inclined plane (61) of correcting piece (6), vertical guide block (42) vertical movement of vertical guide rail (43) relatively, until vertical opposite face (62) contact battery module of correcting piece (6).

6. The automatic deviation rectifying and inserting mechanism according to claim 5, wherein: vertical subassembly (4) of rectifying includes vertical stopper (44) and vertical fixed plate (41), one of them is connected with bearing seat (2) vertical guide block (42) and vertical guide rail (43), another is connected with vertical fixed plate (41), installed part (7) are in the same place with vertical fixed plate (41) installation, vertical fixed plate (41) are equipped with vertical spacing mouth (411), vertical stopper (44) are connected with bearing seat (2), vertical stopper (44) insert vertical spacing mouth (411), when bearing seat (2) carry out vertical movement, vertical stopper (44) vertical removal in vertical spacing mouth (411).

7. The automatic deviation rectifying and inserting mechanism according to claim 5, wherein: a buffer spring is arranged between the vertical correcting block (6) and the bearing seat (2).

8. The automatic deviation rectifying and inserting mechanism according to claim 6, wherein: the mounting piece (7) is provided with a vertical waist-shaped mounting hole (71), the vertical fixing plate (41) is provided with a mounting hole (412), and the mounting piece (7) and the vertical fixing plate (41) are mounted together by sequentially inserting the screws into the mounting hole (71) in the mounting piece (7) and the mounting hole (412) in the vertical fixing plate (41).

9. The automatic deviation rectifying and inserting mechanism according to claim 8, wherein: the amount of the vertical position of the plug (11) which can be adjusted through the mounting hole (71) on the mounting piece (7) is larger than the amount of the vertical position of the plug (11) which can be adjusted through the vertical deviation rectifying assembly (4).

10. The automatic deviation rectifying and inserting mechanism according to claim 1, wherein: bear and be equipped with plug subassembly (1) on seat (2), plug subassembly (1) includes plug mounting panel (15), slider (16) and locating pin (81), above-mentioned plug (11) set up on slider (16), slider (16) are installed on plug mounting panel (15) through locating pin (81), plug mounting panel (15) with bear seat (2) and be connected, slider (16) can use locating pin (81) to swing relative plug mounting panel (15) as the axle.