Detachable corrosion-resistant connecting nut assembly with position adjusting function

Abstract

The utility model provides a detachable corrosion-resistant connecting nut assembly with a position adjusting function. The detachable corrosion-resistant connecting nut assembly is characterized in that a kidney-shaped plate is arranged at the bottom in a limiting self-locking shell, positioning threaded holes are formed in the left side and the right side of the kidney-shaped plate, a screw penetrating hole is formed in the center of the limiting self-locking shell, and self-locking nut claws are arranged on the front side and the rear side of the center of the limiting self-locking shell; the welding nuts are arranged on the left side and the right side of the top end of the kidney-shaped plate, center screw holes of the welding nuts are communicated with the positioning threaded holes, and connecting screws penetrate through the centers of the welding nuts. The high-strength nut is placed in the center of the top of the limiting self-locking shell, when the detachable corrosion-resistant connecting nut assembly with the position adjusting function is installed, the mode that a connecting screw rod penetrates through a positioning hole preset in a battery frame to be connected with a kidney-shaped plate part is adopted, and limitation on the material of the battery frame is small; and the whole assembly can be directly disassembled and replaced when the assembly is damaged or slips or the anti-corrosion period is expired, so that the installation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to the technical field of application of replacing welding nuts, and specifically relates to a detachable, corrosion-resistant connecting nut assembly with a position adjustment function. Background Art

[0002] Nuts are often welded on battery frames to ensure connection strength, so that they have a high self-locking ability to ensure that the nuts will not loosen during operation.

[0003] To ensure welding reliability, the welding nut must be made of a material that matches the corresponding battery frame. This limits the frame material, and after the welding nut is welded to the frame, welding slag will be generated in the internal threaded hole in the center of the welding nut, affecting the thread accuracy and reducing the reliability of the connector. This requires reworking the internal thread, adding additional steps beyond assembly and increasing production costs.

[0004] It should also be noted that if an anti-corrosion coating is added to the weld nut after welding, the contact surface between the weld nut and the battery frame cannot be protected against corrosion. When an "oiling" or "electrogalvanized, non-passivated and non-sealed" anti-corrosion coating is added to the weld nut before welding, first, the coating causes the welding strength to weaken. Secondly, after welding, it is affected by the high heat of welding, and the coating will melt and be "destroyed", and will not have an anti-corrosion function. Finally, the weld nut cannot be disassembled and replaced after being welded to the battery frame, and is not easy to repair. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a detachable, corrosion-resistant connecting nut assembly with a position adjustment function, so as to solve the difficulties of the prior art.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a detachable, corrosion-resistant, position-adjustable connecting nut assembly, comprising:

[0007] A position-limiting self-locking housing 1 has a waist-shaped plate 11 at the bottom thereof, with positioning threaded holes 12 formed on the left and right sides of the waist-shaped plate 11, a screw through-hole 13 formed in the center of the position-limiting self-locking housing 1, and symmetrically arranged self-locking nut claws 14 on the front and rear sides of the center of the position-limiting self-locking housing 1;

[0008] Welding nut 2, the welding nut 2 is set on the left and right sides of the top of the waist plate 11 by welding, the screw hole in the middle of the welding nut 2 is connected to the positioning threaded hole 12, and a connecting screw 3 is passed through the middle of the welding nut 2;

[0009] The high-strength nut 4 is placed in the center of the top of the position-limiting self-locking housing 1 .

[0010] Furthermore, during actual installation, the connecting screw 3 is inserted from one side of the battery frame through the positioning threaded hole 12 and into the welding nut 2 to lock the limiting self-locking shell 1. The contact surface between the bottom of the welding nut 2 and the limiting self-locking shell 1 is a welding surface, which ensures the connection strength, and because the role of the limiting self-locking shell 1 is to provide preliminary positioning and limiting anti-rotation for the high-strength nut 4.

[0011] In this technical solution, after the detachable corrosion-resistant connecting nut assembly with position adjustment function is installed on the battery frame, if the anti-corrosion period has expired or the high-strength nut 4 is damaged or stripped, the entire assembly can be directly replaced, thereby reducing the repair and maintenance costs of the battery frame.

[0012] According to a preferred embodiment, the self-locking nut claw 14 comprises:

[0013] A Z-axis limit plate 141 is formed into an inverted L-shape and is disposed on both sides of the center of the waist plate 11. The Z-axis limit plate 141 is bent toward the center axis of the screw through hole 13;

[0014] The screw clearance groove 142 is arc-shaped and is provided on one side of the center of the top of the Z-axis limiting plate 141 close to the central axis of the screw through hole 13;

[0015] The anti-rotation clamping plate 143 is located on the left and right sides of the bottom of the Z-axis limit plate 141 , and the anti-rotation clamping plate 143 is bent toward the screw through hole 13 .

[0016] Furthermore, the self-locking nut claws 14 symmetrically arranged on the front and back sides of the center of the limiting self-locking housing 1 form a semi-open space for placing and locking the high-strength nut 4 through the structure of the Z-axis limiting plate 141 and the anti-rotation clamping plate 143.

[0017] In this technical solution, the self-locking nut claw 14 is formed by bending the Z-axis limit plate 141 and the anti-rotation clamping plate 143 to reduce its processing cost.

[0018] According to the preferred embodiment, there is a gap of 6 mm between the high-strength nut 4 and the inner side walls of the Z-axis limit plate 141 and the anti-rotation clamping plate 143 .

[0019] Furthermore, the position of the high-strength nut 4 can be movably adjusted within the self-locking nut claw 14 during connection, which provides higher adaptability during assembly and helps to adjust the assembly displacement caused by the tolerance of the pre-set holes between the battery frame and the vehicle frame required for installation.

[0020] According to a preferred embodiment, the diameter of the central screw hole of the high-strength nut 4 is smaller than the diameter of the screw rod through hole 13 .

[0021] In this technical solution, the diameter of the screw through hole 13 is larger than the diameter of the screw hole in the middle of the high-strength nut 4. During installation, when the position of the high-strength nut 4 in the self-locking nut claw 14 changes, the bottom of the screw passing through the middle of the high-strength nut 4 can pass through the screw through hole 13 to connect to the hole preset on the battery frame.

[0022] According to a preferred embodiment, the assembly consisting of the position-limiting self-locking housing 1 and the welding nut 2, the connecting screw 3 and the outer walls of the high-strength nut 4 are all provided with an anti-corrosion coating.

[0023] In this technical solution, the assembly consisting of the limit self-locking housing 1 and the welding nut 2, the connecting screw 3 and the high-strength nut 4 are three independent parts. The three can be coated separately before assembly for overall corrosion protection, and the corrosion resistance is guaranteed.

[0024] The utility model adopts a limited self-locking shell, a self-locking nut claw, a welding nut and a high-strength nut. The self-locking nut claw in the limited self-locking shell 1 is semi-open and surrounds the high-strength nut to make it have self-locking ability. The waist plate part is connected by a connecting screw inserted into a preset positioning hole inside the battery frame, which has less restrictions on the battery frame material. Finally, it should be noted that the assembly consisting of the limited self-locking shell and the welding nut, the connecting screw and the high-strength nut 4 is an independent part. The three can be coated separately before assembly for overall corrosion protection, and the corrosion resistance is guaranteed. If damage or thread slippage occurs or the anti-corrosion period expires, the entire assembly can be directly removed and replaced, reducing the installation and maintenance costs.

[0025] The following will describe in more detail the best embodiments of the present invention in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0028] Figure 3 Shown is an enlarged schematic diagram of the three-dimensional structure of the position-limiting self-locking housing in the present utility model;

[0029] Figure 4 Shown is a schematic diagram of the present invention mounted on a battery frame;

[0030] Label Description

[0031] 1. Limited self-locking shell;

[0032] 11. Waist plate;

[0033] 12. Positioning threaded holes;

[0034] 13. Screw perforation;

[0035] 14. Self-locking nut claws;

[0036] 141, Z-axis limit plate;

[0037] 142. Screw groove;

[0038] 143. Anti-rotation card plate;

[0039] 2. Weld nuts;

[0040] 3. Connecting screw;

[0041] 4. High strength nuts; DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0044] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The utility model proposes a detachable, corrosion-resistant, position-adjustable connecting nut assembly, which is used in the improved process of welding nuts on battery frames. The utility model does not limit the type of battery frame material, but the structure of the detachable, corrosion-resistant, position-adjustable connecting nut assembly is particularly suitable for improving the corrosion resistance of nuts on battery frames, reducing the installation cost and maintenance cost of nuts on battery frames, and ensuring the strength of the new nut connection structure so that it also has a high self-locking ability.

[0046] In general, the detachable, corrosion-resistant, position-adjustable connecting nut assembly proposed by the present invention mainly comprises: a position-limiting self-locking housing 1, a self-locking nut claw 14, a welding nut 2, and a high-strength nut 4. Figure 1 , which shows the arrangement relationship of the position-limiting self-locking housing 1, the self-locking nut claw 14, the welding nut 2 and the high-strength nut 4.

[0047] In order to improve the corrosion resistance of the nuts on the battery frame and reduce the installation cost and maintenance cost of the nuts on the battery frame, while ensuring the self-locking strength of the new nut connection structure, the problems in the background technology such as 1. the welding nuts are matched with the corresponding battery frame materials; 2. the installation, maintenance and repair costs of the welding nuts are high; 3. the corrosion resistance of the anti-corrosion coating of the welding nuts is poor. To this end, in the technical solution provided by this embodiment, the welding nuts in the background technology are replaced with high-strength nuts 4, and a limiting self-locking shell 1 is provided on the outside of the high-strength nut 4. The self-locking nut claws 14 in the limiting self-locking shell 1 are semi-open and surround the high-strength nut 4, so that the high-strength nut 4 can move up and down and left and right in the space formed by the self-locking nut claws 14 and can be tilted at a small angle while being limited by the self-locking nut claws 14, so that after installation, it will at most swing when subjected to external force or vibration, but will not rotate, so that it has self-locking ability, and the original welding reinforcement limiting method for the welding nuts is transferred to the limiting of the limiting self-locking shell 1, on the left and right sides of the limiting self-locking shell 1 A welding nut 2 is set on the side. After being placed at a preset position on the battery frame, the waist plate 11 is connected by a connecting screw 3 inserted into a preset positioning hole inside the battery frame, replacing the original welding connection method. Compared with welding nuts, the battery frame material has fewer restrictions. When a detachable, corrosion-resistant, and position-adjustable connecting nut assembly is installed on the battery frame, it only needs to install the connecting screw 3 in its position, and there will be no need to repair the thread when welding the nut. In addition, if a detachable, corrosion-resistant, and position-adjustable connecting nut assembly is damaged or stripped, or the anti-corrosion period expires, the entire assembly can be directly removed and replaced, reducing the installation, maintenance and repair costs. Finally, it should be noted that the assembly consisting of the limiting self-locking shell 1 and the welding nut 2, the connecting screw 3 and the high-strength nut 4 are three independent parts. The three can be coated separately before assembly, and the disassembled corrosion-resistant and position-adjustable connecting nut assembly is subjected to overall corrosion protection, which can meet the 720-hour red rust-free metal substrate anti-corrosion ability.

[0048] The bottom of the above-mentioned limit self-locking shell 1 is a waist plate 11, and the positioning threaded holes 12 are opened on the left and right sides of the waist plate 11. A screw through-hole 13 is opened in the middle of the limit self-locking shell 1, and the welding nut 2 is arranged on the left and right sides of the top of the waist plate 11 by welding. The screw hole in the middle of the welding nut 2 is connected with the positioning threaded hole 12, and a connecting screw 3 is passed through the middle of the welding nut 2. During actual installation, the connecting screw 3 is inserted from one side of the battery frame through the positioning threaded hole 12 to penetrate the welding nut 2 to lock the limit self-locking shell 1. The contact surface between the bottom of the welding nut 2 and the limit self-locking shell 1 is a welding surface, which ensures the connection strength, and because the role of the limit self-locking shell 1 is to provide preliminary positioning and limiting anti-rotation for the high-strength nut 4, and the connecting screw 3 mainly plays the role of installing and locking the limit self-locking shell 1, the assembly accuracy of the connecting screw 3 and the welding nut 2 is low. After welding the welding nut 2 on the limit self-locking shell 1, it is only necessary to remove the welding slag in the welding nut 2, and there is no need to rework and repair the internal thread.

[0049] The self-locking nut claws 14 are symmetrically arranged on the front and back sides of the center of the self-locking housing 1. The self-locking nut claws 14 include: a Z-axis limit plate 141, a screw clearance groove 142 and an anti-rotation clamping plate 143, wherein the Z-axis limit plate 141 is in an inverted L shape, and the Z-axis limit plate 141 is arranged on the front and back sides of the center of the waist plate 11. The Z-axis limit plate 141 is bent toward the center axis of the screw through hole 13 to limit the upper and lower positions of the high-strength nut 4. The screw clearance groove 142 is opened on the Z-axis limit plate 1 The screw rod clearance groove 142 is arc-shaped on the side of the center of the screw rod through hole 13 in the middle of the top of 41, and the anti-rotation clamping plate 143 is located on the left and right sides of the bottom of the Z-axis limit plate 141. The anti-rotation clamping plate 143 is bent toward the screw rod through hole 13 to limit the front, back, left and right positions of the high-strength nut 4. There is a 6mm gap between the high-strength nut 4 and the Z-axis limit plate 141 and the inner wall of the anti-rotation clamping plate 143, which helps to adjust the assembly displacement (caused by the upper hole of the pre-set motor frame)

[0050] The self-locking nut claw 14 forms a semi-open space for placing and limiting the high-strength nut 4 through the structure of the Z-axis limit plate 141 and the anti-rotation clamping plate 143. The high-strength nut 4 does not need to consider the anti-torsion performance of the welding after welding. The high-strength nut 4 can directly meet 100% of the torque when tightening the screw.

[0051] The above-mentioned high-strength nut 4 is placed in the center of the top of the limited self-locking shell 1. The diameter of the screw hole in the center of the high-strength nut 4 is smaller than the diameter of the screw through hole 13, and the diameter of the screw through hole 13 is larger than the diameter of the screw hole in the center of the high-strength nut 4. During installation, when the position of the high-strength nut 4 in the self-locking nut claw 14 changes, the bottom of the screw passing through the center of the high-strength nut 4 can pass through the screw through hole 13 to connect to the hole preset on the battery frame.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A detachable, corrosion-resistant, position-adjustable connecting nut assembly, characterized in that: include: A position-limiting self-locking housing (1), wherein the bottom of the position-limiting self-locking housing (1) is a waist-shaped plate (11), positioning threaded holes (12) are provided on the left and right sides of the waist-shaped plate (11), a screw through hole (13) is provided in the center of the position-limiting self-locking housing (1), and self-locking nut claws (14) are symmetrically arranged on the front and rear sides of the center of the position-limiting self-locking housing (1); Welding nuts (2), the welding nuts (2) are arranged on the left and right sides of the top of the waist plate (11) by welding, the screw hole in the middle of the welding nut (2) is connected to the positioning threaded hole (12), and a connecting screw (3) is passed through the middle of the welding nut (2); A high-strength nut (4) is placed in the center of the top of the position-limiting self-locking housing (1).

2. The detachable, corrosion-resistant, position-adjustable connecting nut assembly according to claim 1, characterized in that: The self-locking nut claw (14) comprises: A Z-axis limiting plate (141), the Z-axis limiting plate (141) is in an inverted L-shape, the Z-axis limiting plate (141) is arranged on the front and rear sides of the center of the waist plate (11), and the Z-axis limiting plate (141) is bent toward the center axis of the screw through hole (13); A screw rod clearance groove (142), wherein the screw rod clearance groove (142) is arc-shaped and is provided on one side of the center of the top of the Z-axis limiting plate (141) close to the center axis direction of the screw rod through hole (13); An anti-rotation clamping plate (143) is located on the left and right sides of the bottom of the Z-axis limit plate (141), and the anti-rotation clamping plate (143) is bent in the direction of the screw through hole (13).

3. The detachable, corrosion-resistant, position-adjustable connecting nut assembly according to claim 2, characterized in that: There is a 6mm gap between the high-strength nut (4), the Z-axis limiting plate (141), and the inner side wall of the anti-rotation clamping plate (143).

4. The detachable, corrosion-resistant, position-adjustable connecting nut assembly according to claim 3, characterized in that: The diameter of the central screw hole of the high-strength nut (4) is smaller than the diameter of the screw rod through hole (13).

5. The detachable, corrosion-resistant, position-adjustable connecting nut assembly according to claim 4, characterized in that: The components consisting of the position-limiting self-locking housing (1) and the welding nut (2), the connecting screw (3) and the high-strength nut (4) are all provided with an anti-corrosion coating on their outer walls.

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