Heavy-load connector with lock catch structure

Abstract

The utility model discloses a heavy load connector with a lock catch structure, which is characterized in that a lock catch piece with a double-layer structure of a plastic shell and a metal pinch plate is designed, the metal pinch plate provides basic connection strength, and the plastic shell provides integral support for the metal pinch plate, so that the mass of the lock catch piece is greatly reduced on the premise that the connection reliability of the lock catch piece is not influenced. According to the utility model, the structural connection of the plastic shell and the metal pinch plate is stable, and compared with a rivet connection scheme in the prior art, the LED lamp has the advantages of simple assembly, rapid positioning and convenient production.

Description

Technical Field

[0001] The utility model relates to a heavy-duty connector, in particular to a heavy-duty connector with a locking structure. Background Art

[0002] Heavy-duty connectors, also known as heavy-duty connectors, are widely used in construction machinery, textile machinery, packaging and printing machinery, tobacco machinery, robots, rail transit, hot runner, power, automation and other equipment that requires electrical and signal connection.

[0003] In the prior art, heavy-duty connectors mainly rely on metal locking accessories for connection. After stamping and bending the locking parts into shape, they are plated, and then V-shaped springs are riveted to ensure their locking performance; the connection method between the locking parts and the protective shell of the connector is to drill holes in the protective shell, and then use a riveting machine to press and rivet rivets to connect the metal locking parts to the shell. The setting of the rivets requires precise positioning of the processing holes to meet the protection requirements.

[0004] The metal locking parts in the prior art have the following disadvantages: 1. The cost of metal accessories is high; 2. The riveting and drilling process is cumbersome; 3. The locking parts cannot be replaced when damaged; 4. The locking parts are metal products, and the whole product is heavy. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a heavy-duty connector with a locking structure, which includes a first housing, a second housing, and a locking part connecting the first housing and the second housing. A clamping post is arranged on the side wall of the first housing;

[0006] The locking part includes a plastic housing and a metal buckle plate. An inner groove imitating the metal buckle plate is arranged on the surface of the plastic housing. The metal buckle plate is accommodated in the inner groove, and one end of the metal buckle plate is rotatably connected to the second housing, and a bayonet for the clamping post to extend into is arranged at the other end of the metal buckle plate.

[0007] Further, a protruding positioning post is arranged on the surface of the second housing, and one end of the metal buckle plate is rotatably connected to the positioning post.

[0008] Further, the locking parts are respectively located on both sides of the first housing, and the locking parts on both sides are connected by a connecting band.

[0009] Further, the connecting band is integrally formed with the plastic housing.

[0010] Further, the connecting band protrudes outwards to be provided with a handle, and anti-slip lines are arranged on the handle.

[0011] Further, a protrusion is arranged on the outer periphery of the metal buckle plate, and the protrusion is in interference fit with the inner peripheral wall of the inner groove; a depression is arranged at the position of the inner peripheral wall of the inner groove corresponding to the protrusion.

[0012] Furthermore, the inner groove is provided with a guide groove obliquely on the vertical end face of the protrusion.

[0013] Furthermore, the inner groove is provided with a spring sheet at the outer periphery of the metal buckle plate, and the metal buckle plate is in abutting contact with the spring sheet; a deformation gap is provided between the spring sheet and the inner peripheral wall of the inner groove.

[0014] Furthermore, an inwardly recessed step portion is provided at the bottom of the spring sheet.

[0015] Furthermore, a notch is arranged on the outer circumference of the plastic shell.

[0016] The utility model discloses a heavy-duty connector with a locking structure. The locking piece is designed with a double-layer structure of a plastic shell and a metal buckle plate. The metal buckle plate provides basic connection strength, and the plastic shell provides overall support for the metal buckle plate, thereby greatly reducing the mass of the locking piece without affecting the connection reliability of the locking piece.

[0017] The structural connection between the plastic shell and the metal gusset plate of the utility model is stable, and compared with the rivet connection solution in the prior art, it has the advantages of simple assembly, rapid positioning and convenient production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a heavy-duty connector with a locking structure of the utility model;

[0019] Figure 2 is a schematic diagram of the lock structure;

[0020] Figure 3 It is a schematic diagram of the connection between the plastic shell and the metal gusset plate.

[0021] Figure numerals: first shell 1, second shell 2, locking member 3, snap-on column 4, positioning column 5, bayonet 6, plastic shell 7, metal buckle plate 8, inner groove 9, connecting belt 10, gripper 11, protrusion 12, recess 13, guide groove 14, spring piece 15, step portion 16, deformation gap 17, notch 18. DETAILED DESCRIPTION

[0022] like Figure 1 and Figure 2An overload connector with a buckle structure as shown includes a first housing 1, a second housing 2, and a buckle 3 connecting the first housing 1 and the second housing 2. A clamping post 4 is provided on the side wall of the first housing 1. One end of the buckle 3 is rotatably connected to the second housing 2, and a bayonet 6 for the clamping post 4 to extend into is provided at the other end of the buckle 3. The rotating end of the buckle 3 rotates relative to the second housing 2, and then the position of the clamping post 4 is positioned by the engaging end, so that the position of the buckle 3 is restricted on the first housing 1, and the positions of the first housing 1 and the second housing 2 are fixed.

[0023] A protruding positioning post 5 is provided on the surface of the second housing 2, and one end of the buckle 3 is rotatably connected to the positioning post 5.

[0024] The buckle 3 includes a plastic outer shell 7 and a metal buckle plate 8. The plastic outer shell 7 is made of plastic material, and an inner groove 9 is provided on the surface of the plastic outer shell 7 and formed by injection molding. The function of the plastic outer shell 7 is to provide support for the metal buckle plate 8. The metal buckle plate 8 is formed by sheet metal processing of metal material and is fitted and accommodated in the inner groove 9. The inner groove 9 is arranged in a shape imitating the shape of the metal buckle plate 8. One end of the metal buckle plate 8 is rotatably connected to the second housing 2, and the above-mentioned bayonet 6 is provided at the other end of the metal buckle plate 8. The metal buckle plate 8 forms a fastening component in the prior art and is in direct contact with the clamping post 4 and the positioning post 5, providing the basic structural strength for the entire buckle 3.

[0025] The shape of the metal buckle plate 8 is roughly divided into a straight section and an arc section according to the stress distribution when the buckle 3 rotates. The end rotatably connected to the positioning post 5 is arranged at the end of the straight section, and the end clamped with the clamping post 4 is arranged at the end of the arc section. Setting the inner groove 9 to the same imitation structure can limit the horizontal movement of the buckle 3.

[0026] In this embodiment, there are four groups of buckles 3, symmetrically arranged on both sides of the end of the overload connector. The buckles 3 on both sides of the same end are connected by a connecting belt 10. The connecting belt 10 is also made of plastic material and can be integrally injection molded with the plastic outer shell 7 of the buckle 3. The plastic outer shell 7 can significantly reduce the weight of the buckle 3. Rotating the connecting belt 10 can drive the buckles 3 on both sides to rotate, so that the clamping posts 4 on both sides are correspondingly clamped into the bayonets 6 of the buckles 3. At the same time, the plastic material is also convenient for replacing plastic particles of different colors to meet the customer's selection requirements for different colors.

[0027] Furthermore, the connecting belt 10 is provided with a protruding handle 11 on the outside, and anti-slip lines are provided on the handle 11 to facilitate the user to rotate the buckle 3.

[0028] As Figure 3As shown, in order to ensure that the metal buckle plate 8 can be stably set in the inner groove 9 of the plastic shell 7, a protrusion 12 is provided on the outer periphery of the metal buckle plate 8, and the protrusion 12 is interference fit in the inner circumferential wall of the inner groove 9; and a recess 13 is provided on the inner circumferential wall of the inner groove 9 at the position corresponding to the protrusion 12. When the protrusion 12 moves along the circumferential wall of the inner groove 9, it will be pressed into the recess 13, thereby limiting the vertical movement of the metal buckle plate 8 relative to the plastic shell 7.

[0029] Furthermore, the inner groove 9 is obliquely provided with a guide groove 14 on the vertical end face of the protrusion 12. When the metal buckle plate 8 is pushed in the direction of the recess 13, the protrusion 12 will move along the guide groove 14, gradually increasing the contact pressure between the protrusion 12 and the peripheral wall of the inner groove 9, making the process of the metal buckle plate 8 being inserted into the recess 13 smoother.

[0030] The protrusion 12 in the embodiment is located on the outer peripheral surface of the rotationally connected positioning column 5 , which can quickly locate the position of the locking member 3 and ensure the stability of the cooperation between the rotating end of the locking member 3 and the positioning column 5 .

[0031] Similarly, the inner groove 9 is provided with a spring sheet 15 at the outer periphery of the metal buckle plate 8, and the metal buckle plate 8 is in contact with the spring sheet 15; a deformation gap 17 is provided between the spring sheet 15 and the inner peripheral wall of the inner groove 9, and when the metal buckle plate 8 is inserted, the metal buckle plate 8 will continue to squeeze the spring sheet 15 and deform the spring sheet 15, thereby reducing the pressure of inserting the metal buckle plate 8. The contact surface between the spring sheet 15 and the metal buckle plate 8 is also inclined, and a step portion 16 that is inwardly recessed 13 is provided at the bottom of the spring sheet 15, and the metal buckle plate 8 will be inserted into the step portion 16 along the spring sheet 15, further limiting the fixed position of the metal buckle plate 8.

[0032] The spring pieces 15 of this embodiment are arranged at the location where the stress is maximum between the arc segment and the straight segment of the inner groove 9 , so that the best limiting effect can be achieved with the least number of spring pieces 15 .

[0033] The assembly process of this embodiment is as follows: the metal buckle plate 8 is installed into the inner groove 9. Due to the setting of the limiting mechanism such as the spring piece 15 and the protruding piece, the metal buckle plate 8 is stably fixed in the inner groove 9, and the metal buckle plate 8 and the plastic shell 7 form a complete lock 3. The two sets of locks 3 at the same end are combined into one body through the connecting belt 10, and the two sets of locks 3 are respectively connected with the positioning columns 5 on both sides of the second shell 2, and then the connecting belt 10 is rotated, and the bayonet 6 of the metal buckle plate 8 is engaged with the clamping column 4 to fix the position of the first shell 1 and the second shell 2.

[0034] The disassembly process of this embodiment is the opposite of the assembly process. First, rotate the connecting belt 10 to disengage the bayonet 6 from the clamping post 4, and then remove the locking part 3 from the positioning post 5, thus completing the disassembly of the locking part 3. To increase the convenience of disassembly, a notch 18 for inserting a finger is provided at the outer circumference of the plastic housing 7, and the notch 18 is located at the positioning post 5 to facilitate the user to peel off the locking part 3 from the positioning post 5.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A heavy-duty connector with a locking structure, comprising a first housing (1), a second housing (2) and a locking member (3) connecting the first housing (1) and the second housing (2), wherein a clamping column (4) is arranged on a side wall of the first housing (1); characterized in that: The locking member (3) comprises a plastic shell (7) and a metal buckle plate (8); the surface of the plastic shell (7) is provided with an inner groove (9) of the contoured metal buckle plate (8); the metal buckle plate (8) is accommodated in the inner groove (9); one end of the metal buckle plate (8) is rotatably connected to the second shell (2); the other end of the metal buckle plate (8) is provided with a bayonet (6) for the bayonet column (4) to extend into.

2. A heavy-duty connector with a locking structure as claimed in claim 1, characterized in that: A protruding positioning column (5) is provided on the surface of the second shell (2), and one end of the metal buckle plate (8) is rotatably connected to the positioning column (5).

3. A heavy-duty connector with a locking structure as claimed in claim 2, characterized in that: The locking components (3) are respectively located on two sides of the first housing (1), and the locking components (3) on the two sides are connected via a connecting belt (10).

4. A heavy-duty connector with a locking structure as claimed in claim 3, characterized in that: The connecting belt (10) and the plastic shell (7) are integrally formed.

5. A heavy-duty connector with a locking structure as claimed in claim 3, characterized in that: The connection belt (10) is provided with a gripper (11) protruding outwards, and the gripper (11) is provided with anti-slip grooves.

6. A heavy-duty connector with a locking structure as claimed in claim 2, characterized in that: A protrusion (12) is provided on the outer periphery of the metal buckle plate (8), and the protrusion (12) is interference-fitted with the inner peripheral wall of the inner groove (9); a recess (13) is provided on the inner peripheral wall of the inner groove (9) at a position corresponding to the protrusion (12).

7. A heavy-duty connector with a locking structure as claimed in claim 6, characterized in that: The inner groove (9) is provided with a guide groove (14) obliquely on the vertical end surface of the protrusion (12).

8. A heavy-duty connector with a locking structure as claimed in claim 2, characterized in that: The inner groove (9) is provided with a spring sheet (15) at the outer periphery of the metal buckle plate (8), and the metal buckle plate (8) is in abutting contact with the spring sheet (15); a deformation gap (17) is provided between the spring sheet (15) and the inner peripheral wall of the inner groove (9).

9. A heavy-duty connector with a locking structure as claimed in claim 8, characterized in that: A step portion (16) recessed inwards (13) is provided at the bottom of the spring sheet (15).

10. A heavy-duty connector with a locking structure as claimed in claim 2, characterized in that: A notch (18) is provided on the outer circumference of the plastic shell (7).

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