Multi-terminal low-voltage module for rapid and accurate grading assembly

Abstract

The utility model discloses a multi-terminal low-voltage module group capable of rapid and accurate grading assembly. The low-voltage module comprises a front mounting plate, a rear mounting plate and a plurality of low-voltage terminals, a positioning groove is formed in the upper end of a mounting hole of a front main block of the front mounting plate, a plurality of vertical limiting columns are arranged on the periphery of the positioning groove, and upper preassembling steps and lower fixing steps are symmetrically arranged in the middles of two longitudinal vertical wall plates on the front main block. A rear guide hole of the rear mounting plate is vertically opposite to one mounting hole, and an elastic claw is arranged at the lower end of the rear guide hole; hooks are symmetrically arranged at the lower ends of two longitudinal surfaces of the rear mounting plate; when the hook is clamped on the preassembled step, the low-voltage terminals penetrate through the rear guide holes one by one until the positioning bosses of the low-voltage terminals abut against the shaft sleeve positioning grooves, and when the hook is clamped on the preassembled step, the elastic clamping jaws are squeezed and folded by the limiting columns to hold and fix the low-voltage terminals. The device has the effects of high one-time arrival rate of graded assembly, high assembly speed, high assembly precision, reduced assembly cost and high yield.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to a multi-terminal low-voltage module that can be assembled quickly and accurately in stages. Background Art

[0002] At present, the new energy industry is developing rapidly, and battery swap connectors are widely used in new energy vehicles. The assembly process of the low-voltage components of the battery swap connector: generally, the low-voltage terminals are connected one by one through the rear mounting plate, and then neatly inserted into the front mounting plate, and the front and rear mounting plates are buckled into the shell. Its defects are: First, the number of terminals is large and the lengths are different, which makes it difficult to ensure neatness during assembly; at the same time, the aperture of the mounting plate is small, and the terminals are easily skewed, resulting in the front and rear mounting plates not being buckled in place. The above two situations cause the terminal assembly to require repeated rework and search and sorting to ensure that it is inserted into the corresponding hole, which is time-consuming and labor-intensive, and requires more assembly hours; second, forced buckling during assembly will damage the terminal wiring position or damage the mounting plate, affecting the low-voltage terminal communication function. Utility Model Content

[0003] In order to solve one or more of the above problems, the utility model provides a multi-terminal low-voltage module that can be assembled quickly and accurately in stages.

[0004] According to one aspect of the utility model, the multi-terminal low-voltage module for rapid and accurate hierarchical assembly comprises: a front mounting plate, a rear mounting plate and a plurality of low-voltage terminals;

[0005] The front main block of the front mounting plate is provided with a plurality of vertically penetrating mounting holes, the upper end of the mounting hole is provided with a positioning groove and a plurality of vertical limiting columns are provided around it, the vertical wall panels around the front main block surround to form an open mounting cavity, and the middle of the two longitudinal vertical wall panels are symmetrically provided with upper pre-installed steps, upper clamping holes, lower fixed steps and lower clamping holes from top to bottom;

[0006] The outer contour of the rear mounting plate matches the mounting cavity, and the rear main block is provided with a plurality of vertically penetrating rear guide holes, each rear guide hole is vertically opposite to a mounting hole, an elastic claw is provided at the lower end of the rear guide hole, and hooks are symmetrically provided at the lower middle ends of the two longitudinal surfaces of the rear main block;

[0007] When the hook is clamped on the pre-installed step, the low-voltage terminals are passed through the rear guide holes one by one until their positioning bosses are pressed against the sleeve positioning grooves. When the hook is clamped on the pre-installed step, the elastic claws are squeezed and contracted by the limiting columns to hold and fix the low-voltage terminals.

[0008] In some embodiments, the upper clamping hole, the lower clamping hole and the elastic clamping claw are in a clearance fit.

[0009] In some embodiments, a rectangular upper connecting block is provided between the upper notch in the middle of the front mounting plate and the upper clamping hole, and a rectangular lower connecting block is provided between the upper clamping hole and the lower clamping hole.

[0010] In some embodiments, an elastic clearance hole is further provided in the middle of the upper coupling block.

[0011] In some embodiments, a vertical end post is vertically connected to the middle of the rear main block. A hook is integrally connected to the outside of the lower end of the vertical end post. Lower notches are provided on both sides of the vertical end post.

[0012] In some embodiments, a guide sliding surface with a chamfer structure is formed at the lower end of the hook.

[0013] In some embodiments, a vertical guide hole is further provided between the vertical wall plates, and the rear main block is provided with a vertical guide post that cooperates with the vertical guide hole.

[0014] In some embodiments, the rear guide holes of the front mounting plate and the mounting holes of the front main block are arranged in the same rectangular array; at the characteristic intersection points of the horizontal center lines of adjacent rows and the vertical center lines of adjacent columns, a limiting post is integrally provided on the front main block.

[0015] In some embodiments, a frustum with a chamfer structure is provided at the upper end of the limiting post.

[0016] In some embodiments, the front mounting plate and the rear mounting plate are made of injection molding material.

[0017] When the multi-terminal low-voltage module with fast and precise hierarchical assembly is clamped by the hook and the upper pre-installation step, high-precision installation of the low-voltage terminals is carried out. The low-voltage terminals are fixed by clamping the hook to the lower fixing step. Its beneficial effects are as follows: First, the pre-installation assembly ensures good position accuracy of the low-voltage terminals. The positioning slots and positioning bosses are used for positioning and fixing assembly. The limiting posts ensure that the elastic claws are fastened without inclination. Therefore, the hierarchical assembly improves the accuracy of one-time assembly in place, reduces the assembly time of the low-voltage components of the battery swapping connector, and facilitates batch operation on the assembly line. Second, the assembly speed is fast, the assembly accuracy is high, the assembly cost of the product and the loss rate during the manufacturing process are reduced, and good communication functions are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of a multi-terminal low-voltage module with fast and precise hierarchical assembly according to an embodiment of the present invention;

[0019] Figure 2 is Figure 1 a cross-sectional schematic diagram of the multi-terminal low-voltage module with fast and precise hierarchical assembly shown;

[0020] Figure 3 is Figure 1 a three-dimensional schematic diagram of the front mounting plate shown;

[0021] Figure 4 is Figure 1 a three-dimensional schematic diagram of the rear mounting plate shown;

[0022] Front mounting plate 1, front main block 10, mounting hole 100, limiting column 101, positioning groove 102, mounting cavity 11, vertical wall plate 111, upper pre-installed step 112, upper clamping hole 113, lower fixed step 114, lower clamping hole 115, upper notch 116, elastic clearance hole 117, vertical guide hole 12;

[0023] Rear mounting plate 2, rear main block 20, rear guide hole 200, elastic claw 201, hook 21, vertical guide column 22, vertical end column 23, lower notch 24, guide sliding surface 25;

[0024] Low voltage terminal 3, positioning boss 31;

[0025] Sealing gasket 4. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] Figures 1 to 4 A multi-terminal low-voltage module for rapid and precise hierarchical assembly according to an embodiment of the utility model is schematically shown. As shown in the figure, the multi-terminal low-voltage module for rapid and precise hierarchical assembly includes: a front mounting plate 1, a rear mounting plate 2 and a plurality of low-voltage terminals 3;

[0028] The front main block 10 of the front mounting plate 1 is provided with a plurality of vertically penetrating mounting holes 100, the upper end of the mounting hole 100 is provided with a positioning groove 102 and a plurality of vertical limiting columns 101 are provided around it, the vertical wall panels 111 around the front main block 10 surround and form an open mounting cavity 11, and the middle of the two longitudinal vertical wall panels 111 are symmetrically provided with an upper pre-installed step 112, an upper clamping hole 113, a lower fixed step 114 and a lower clamping hole 115 from top to bottom;

[0029] The outer contour of the rear mounting plate 2 matches the mounting cavity 11, and the rear main block 20 is provided with a plurality of vertically penetrating rear guide holes 200, each rear guide hole 200 is vertically opposite to a mounting hole 100, and an elastic claw 201 is provided at the lower end of the rear guide hole 200, and hooks 21 are symmetrically provided at the middle lower ends of the two longitudinal surfaces of the rear main block 20;

[0030] When the hook 21 is engaged with the pre-installed step 112, the low-voltage terminals 3 are passed through the rear guide hole 200 one by one until their positioning bosses 31 are pressed against the sleeve positioning groove 102. When the hook 21 is engaged with the pre-installed step 112, the elastic claws 201 are squeezed and contracted by the limiting column 101 to hold and fix the low-voltage terminal 3.

[0031] The use process of this multi-terminal low-voltage module for rapid and accurate hierarchical assembly is as follows:

[0032] After pressing downward, the rear mounting plate 2 slides vertically in the mounting cavity 11. When the hook 21 is engaged with the upper clamping hole 113 below the upper pre-installed step 112, the elastic clamping claw 201 does not contact the limiting column 101 and is in a naturally open state. At this time, the low-voltage terminals 3 are passed through the rear guide holes 200 and the elastic clamping claws 201 one by one until the positioning boss 31 of the low-voltage terminal 3 is pressed against the shaft sleeve in the positioning groove 102.

[0033] The hooks 21 on both sides are pressed inward to disengage them from the upper clamping holes 113, and at the same time, the rear mounting plate 2 is pressed downward to make it continue to slide vertically until the hooks 21 are clamped in the lower clamping holes 115 below the lower fixed step 114; at this time, the elastic clamping claws 201 are squeezed and retracted by the limiting column 101 and cannot be opened. At this time, the elastic clamping claws 201 hold the low-voltage terminal 3 tightly.

[0034] This multi-terminal low-voltage module with rapid and precise graded assembly can perform high-precision installation of the low-voltage terminal 3 when the hook 21 and the upper pre-installed step 112 are engaged, and the low-voltage terminal 3 is fixed by engaging the lower fixed step 114 with the hook 21. The beneficial effects are: first, the pre-assembly ensures the good positioning of the low-voltage terminal 3, the positioning groove 102 and the positioning boss 31 are used for positioning and fixed assembly, and the limit column 101 ensures that the elastic claw 201 is accurately tightened without tilting. Therefore, the graded assembly improves the accuracy of one-time assembly, reduces the assembly time of the low-voltage components of the power exchange connector, and facilitates batch operation on the assembly line; second, the assembly speed is fast and the assembly accuracy is high, which reduces the assembly cost of the product and the loss rate in the manufacturing process, and can ensure good communication function.

[0035] Furthermore, the upper clamping hole 113, the lower clamping hole 115 and the elastic clamping claw 201 are clearance-fitted;

[0036] The upper pre-installed step 112 is the upper hole wall of the upper clamping hole 113, and the lower fixed step 114 is the upper hole wall of the lower clamping hole 115. Preferably, the upper clamping hole 113 and the lower clamping hole 115 of the front mounting plate 1 are rectangular through holes. The beneficial effect is that the clamping structure of this arrangement is easy to clamp and position.

[0037] Furthermore, a rectangular upper notch 116 with an open top is provided in the middle of the front mounting plate 1, a rectangular upper connecting block is provided between the upper notch 116 and the upper clamping hole 113, and a rectangular lower connecting block is provided between the upper clamping hole 113 and the lower clamping hole 115;

[0038] The upper pre-installed step 112 is the lower surface of the upper connecting block, and the lower fixed step 114 is the lower surface of the lower connecting block. The beneficial effect is that the structure has good installability.

[0039] Preferably, an elastic clearance hole 117 is also provided in the middle of the upper connecting block; the lower clamping hole 115 extends downward to the lower end of the front main block 10. The beneficial effect is that the elastic clearance hole 117 can ensure convenient disassembly and assembly.

[0040] Furthermore, a vertical end post 23 is vertically connected in the middle of the rear main block 20. A hook 21 is integrally connected to the outer side surface of the lower end of the vertical end post 23. Rectangular lower notches 24 are provided on both sides of the vertical end post 23.

[0041] Preferably, the hook 21 is in the shape of a rectangular block, and a guiding sliding surface 25 with a chamfer structure is formed at the lower end of the hook 21. The beneficial effect is that the guiding sliding surface 25 facilitates the fixed clamping to enter and disengage.

[0042] Furthermore, a vertical guiding hole 12 is also provided between the vertical wall plates 111. The rear main block 20 is provided with a vertical guiding post 22 that cooperates with the vertical guiding hole 12. When the rear mounting plate 2 vertically slides in the mounting cavity 11, the vertical guiding post 22 is slidably connected to the vertical guiding hole 12. The beneficial effect is that it ensures good assembly accuracy.

[0043] Furthermore, the rear guiding holes 200 of the front mounting plate 1 and several mounting holes 100 of the front main block 10 are arranged in the same rectangular array;

[0044] The characteristic intersection points of the horizontal center lines of adjacent rows and the vertical center lines of adjacent columns are arranged in a rectangular array. At each characteristic intersection point, a vertical limiting post 101 is integrally provided on the front main block 10. Each limiting post 101 can limit four adjacent elastic claws 201, and each elastic claw 201 is limited by four limiting posts 101. The beneficial effect is that it ensures that the elastic claws 201 are uniformly restricted in all directions, effectively clamping the terminal without skewing.

[0045] Preferably, a frustum with a chamfer structure is provided at the upper end of the limiting post 101; or a reinforcing ring with a chamfer structure is provided at the connection between the lower end of the limiting post 101 and the front main block 10. The beneficial effect is that the frustum structure ensures gentle pressing of the elastic claw 201.

[0046] Preferably, the front mounting plate 1 and the rear mounting plate 2 are made of injection molding material. The beneficial effect is that the injection molding material has good processing performance and certain elasticity, facilitating interference fit.

[0047] Preferably, a sealing cushion block 4 is further installed at the lower end of the rear mounting plate 2.

[0048] Further, large-diameter second rear guide holes are provided at the four corners of the front mounting plate 1. Second elastic claws are provided at the lower ends of the second rear guide holes. Second mounting holes are provided at the four corners of the rear mounting plate 2. Second positioning grooves are provided at the upper ends of the second mounting holes. A limiting block is provided between the two second mounting holes. The contact surface of the limiting end block is an arc-shaped limiting surface. The large-diameter second terminal is matched with the second rear guide hole and the second elastic claw. Its large-diameter second positioning boss and the second positioning groove are in mutual abutment. The arc-shaped limiting surface presses the second elastic claw to close and hold the second terminal tightly. The beneficial effect is that this setting is applicable to more types of low-voltage modules.

[0049] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A multi-terminal low-voltage module for rapid and precise hierarchical assembly, characterized in that It comprises: a front mounting plate (1), a rear mounting plate (2) and a plurality of low-voltage terminals (3); The front main block (10) of the front mounting plate (1) is provided with a plurality of vertically penetrating mounting holes (100); a positioning groove (102) is provided at the upper end of the mounting hole (100) and a plurality of vertical limiting columns (101) are provided around the mounting hole; vertical wall panels (111) around the front main block (10) surround and form an open mounting cavity (11); and upper pre-installation steps (112), upper clamping holes (113), lower fixing steps (114) and lower clamping holes (115) are symmetrically provided in the middle of the two longitudinal vertical wall panels (111) from top to bottom; The outer contour of the rear mounting plate (2) matches the mounting cavity (11), and the rear main block (20) is provided with a plurality of vertically penetrating rear guide holes (200), each of the rear guide holes (200) and a mounting hole (100) are vertically opposite, an elastic claw (201) is provided at the lower end of the rear guide hole (200), and hooks (21) are symmetrically provided at the middle lower ends of the two longitudinal surfaces of the rear main block (20); When the hook (21) is engaged with the upper pre-installed step (112), the low-voltage terminals (3) are passed through the rear guide holes (200) one by one until the positioning bosses (31) thereof are pressed against the positioning grooves (102) of the sleeve; when the hook (21) is engaged with the upper pre-installed step (112), the elastic claws (201) are squeezed and contracted by the limiting pillars (101) to hold and fix the low-voltage terminals (3).

2. The multi-terminal low-voltage module for fast and accurate grading assembly according to claim 1, characterized in that, The upper clamping hole (113), the lower clamping hole (115) and the elastic clamping claw (201) are clearance-matched.

3. The multi-terminal low-voltage module for fast and precise grading assembly according to claim 2, wherein, A rectangular upper connecting block is provided between the upper notch (116) in the middle of the front mounting plate (1) and the upper clamping hole (113), and a rectangular lower connecting block is provided between the upper clamping hole (113) and the lower clamping hole (115).

4. The multi-terminal low-voltage module for fast and accurate grading assembly according to claim 2, wherein An elastic gap hole (117) is also provided in the middle of the upper connecting block.

5. The multi-terminal low-voltage module for rapid and precise hierarchical assembly according to claim 1, characterized in that, The middle of the rear main block (20) is vertically connected to a vertical end column (23), the lower end of the vertical end column (23) is integrally connected to the hook (21), and lower notches (24) are provided on both sides of the vertical end column (23).

6. The multi-terminal low-voltage module for fast and precise grading assembly according to claim 5, characterized in that The lower end of the hook (21) is formed with a guide sliding surface (25) with a chamfered structure.

7. The multi-terminal low-voltage module for fast and precise hierarchical assembly according to claim 1, wherein A vertical guide hole (12) is also provided between the vertical wall plates (111), and the rear main block (20) is provided with a vertical guide column (22) matched with the vertical guide hole (12).

8. The multi-terminal low-voltage module for rapid and precise hierarchical assembly according to claim 1, characterized in that The rear guide holes (200) of the front mounting plate (1) and the mounting holes (100) of the front main block (10) are arranged in the same rectangular array; a limiting column (101) is integrally provided on the front main block (10) at a characteristic intersection of a transverse center line of an adjacent row and a longitudinal center line of an adjacent column.

9. The multi-terminal low-voltage module for rapid and precise grading assembly according to claim 8, characterized in that, The upper end of the limiting column (101) is provided with a truncated table with a chamfered structure.

10. The multi-terminal low-voltage module for fast and accurate hierarchical assembly according to any one of claims 1 to 9, characterized in that, The front mounting plate (1) and the rear mounting plate (2) are made of injection-molded material.

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