CN115467888A - A floating nut structure and its installation and use method - Google Patents

Abstract

The invention discloses a floating nut structure, comprising: a nut having a flange; the upper plate is sleeved on the outer side of the nut and is in interference fit with the outer side wall of the nut, and a pair of inwards concave U-shaped notches are symmetrically arranged on two opposite sides of the upper plate; the nut comprises a lower plate, wherein a through hole is formed in the center of the lower plate and is sleeved outside a flange of the nut, a gap is formed between the through hole and the outer side wall of the flange of the nut, a pair of first clamping jaws are arranged on the lower plate corresponding to a pair of U-shaped notches, and the first clamping jaws are matched in the U-shaped notches and are arranged to be movable in the horizontal plane and the vertical plane along the U-shaped notches. The invention also discloses an installation and use method of the floating nut structure. The floating nut is simple in structure and convenient to use, and the movable gaps are formed among the upper plate, the lower plate and the movable nut, so that parts are effectively installed, and the production efficiency is greatly improved.

Description

A floating nut structure and its installation and use method

technical field

The invention relates to the technical field of automobiles. More specifically, the present invention relates to a floating nut structure and its installation and use method.

Background technique

In the general assembly process of the body and chassis, when a certain part needs to be installed on another part, it is generally connected by standard bolts and nuts or bolts and fixed screw holes. There is a common problem in these two connection methods. That is, when the holes on a certain part and the holes on the mounting part are often misaligned, the axes between the two holes are not on the same straight line, or when there are multiple holes in a certain assembly and the assembled part need to be installed, this problem It is more serious, so that in automobile production, other parts cannot be installed effectively due to the accumulation of production and assembly tolerances, which reduces production efficiency.

Contents of the invention

An object of the present invention is to provide a floating nut structure and its installation and use method. The floating nut has a simple structure and is easy to use. By setting a movable gap between the upper plate, the lower plate and the movable nut, the effective installation of parts is realized, which greatly improves the Productivity.

In order to achieve these objects and other advantages according to the present invention, a floating nut structure is provided, comprising: a nut having a flange; an upper plate sleeved on the outside of the nut and interference fit with the outer wall of the nut A pair of concave U-shaped notches are symmetrically arranged on opposite sides of the upper plate; the lower plate has a through hole in its center and is sleeved outside the flange of the nut, and the method between the through hole and the nut There is a gap between the outer walls of the flange, and a pair of first claws are provided on the lower plate corresponding to a pair of U-shaped notches. It can move both horizontally and vertically.

Preferably, the center of the nut has a threaded hole, the nut has a hexagonal structure, and the flange has a circular structure.

Preferably, the center of the upper plate has a through hole, and a plurality of second claws are provided on its circumference, and the second claws are integrated with the upper plate, and the second claws are nuts A plate-shaped structure protruding sideways and protruding outward from the side of the upper plate, the upper plate is interference-fitted on the outer wall of the nut through a plurality of second claws.

Preferably, four second claws are arranged symmetrically and arranged along the direction of a pair of U-shaped notches.

Preferably, the through hole of the lower plate is provided with a plurality of third claws in the circumferential direction, and is integrally formed with the lower plate, and the third claws are plate-like structures inclined toward the nut, There is a gap between the third claw and the nut, and there is a gap between the apex of the third claw and the upper plate.

Preferably, there are four third claws arranged symmetrically along the direction of the pair of first claws.

Preferably, the first claw includes a vertical part, a curved part and a limiting part that are sequentially connected as one, and the three form an S-like plate structure, and the width of the first claw is smaller than that of the U The width of the notch, the bottom of the vertical part is integrally formed with the lower plate, the concave arc surface of the curved part is set towards the nut, the limiting part is also set in an arc shape and is located on the upper top of the board.

Preferably, the through hole of the lower plate is recessed inward to form a groove for fixing the vertical portion of the first claw.

The present invention also provides a method for installing and using a floating nut structure, comprising the following steps:

Step 1. The nut passes through the positioning pin on the workbench through its threaded hole, and the flange bottom of the nut falls down on the workbench;

Step 2. The lower plate passes through the nut through its central through hole and is located outside the flange of the nut, so that the bottom surface of the lower plate falls on the workbench;

Step 3. Put the upper plate on the pressure head of the press-fitting machine and start pressing. The nut is caught by the second claw on the upper plate. The curved part of the first claw is between the concave arc surface and the bottom surface of the U-shaped notch The gap between the first claw and the two sides of the U-shaped notch is the horizontal range of movement of the nut, the gap between the third claw on the lower plate and the upper plate, the height of the vertical part of the first claw and The gap between the node of the bending part of the first claw and the limiting part and the upper plate is the vertical movable range of the nut;

Step 4. After the press-fitting is completed, remove the upper and lower plates.

The present invention at least includes the following beneficial effects:

1. The floating nut of the present invention has a simple structure and is easy to install and use. Through the movable gap provided between the upper plate, the lower plate and the movable nut, it has a multi-directional movable range, realizes the effective installation of parts, and greatly improves the production efficiency.

2. Compared with the problem that the nuts of the present invention are easy to fall off after assembly of other similar floating nut structures, the nuts of the floating nut structure of the present application are not easy to fall off after assembly. When other similar nut structures are assembled, the components adopt clearance fit, and each component has a large space for movement. When being transported dynamically, the movable nut tends to fall off. The structure of this application adopts interference fit and interference contact. There are four points, and it has been verified that the nut will not fall off regardless of static or dynamic transportation.

3. Compared with other similar floating nut structures in the present invention, which are generally assembled on the vehicle body, the floating nut structure of the present application can be assembled on both the vehicle body and the chassis. Due to the high strength and quality requirements of the chassis structure, the assembly position of the floating nut cannot be repaired or the repair cost is high. If other similar structures are used, when the nut falls off, the chassis structure will be scrapped or a lot of manpower and material resources will be spent to repair the chassis. For the structural member, if the floating nut structure of the present application is used, the above-mentioned problems will not occur. The advantage of the structure of the present application is that the nut is not easy to fall off.

Other advantages, objectives and features of the present invention will partly be embodied through the following descriptions, and partly will be understood by those skilled in the art through the study and practice of the present invention.

Description of drawings

Fig. 1 is the structural representation after the assembly of the present invention;

Fig. 2 is the explosion figure of the present invention;

Fig. 3 is the top view of the present invention;

Fig. 4 is another perspective structure diagram after assembly of the present invention;

Fig. 5 is the bottom view of the present invention;

Fig. 6 is a schematic diagram of the installation of the floating nut of the present invention.

Explanation of reference signs:

1. Nut, 2. Flange, 3. Upper plate, 4. Lower plate, 5. First claw, 6. Second claw, 7. Third claw, 8. U-shaped notch, 9. Vertical Department, 10, bending part, 11, limit part, 12, workbench, 13, pressure head.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, if not otherwise specified, can be obtained from commercial sources; in the description of the present invention, The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have Certain orientations, constructed and operative in certain orientations, therefore are not to be construed as limitations on the invention.

As shown in Figures 1 to 5, the present invention provides a floating nut structure, comprising: a nut 1, which has a flange 2; Fittingly, the upper plate 3 is symmetrically provided with a pair of concave U-shaped notches 8 on both sides; There is a gap between the hole and the outer wall of the flange 2 of the nut 1, and a pair of first claws 5 are provided on the lower plate 4 corresponding to a pair of U-shaped notches 8, and the first claws 5 are matched with the The U-shaped notch 8 is arranged to be movable along the U-shaped notch 8 in both the horizontal plane and the vertical plane.

In the above technical solution, the present application is a structure of a floating nut 1 for automobile body structural parts and chassis structural parts. The upper plate 3 is used to engage with the nut 1. The first claw 5 is elastic and will not be deformed after being squeezed and assembled. The upper plate 3 can move in the horizontal plane of the first claw 5 through its U-shaped notch 8. The upper plate 3 There is a gap between it and the lower plate 4, which can realize the movement of the vertical surface, and then realize the movement of the nut 1 in various directions.

In another technical solution, the nut 1 has a threaded hole in the center, the nut 1 has a hexagonal structure, and the flange 2 has a circular structure. The upper end surface of the nut 1 is hexagonal, so that the contact surface between the second claw 6 provided on the upper plate 3 and the outer wall of the nut 1 is larger, and a better interference fit is achieved.

In another technical solution, the center of the upper plate 3 has a through hole, and a plurality of second claws 6 are arranged in the circumferential direction, and the second claws 6 are integrally formed with the upper plate 3, so that The second claws 6 are plate-shaped structures that protrude toward the nut 1 and protrude outward from the side of the upper plate 3 , and the upper plate 3 is interference-fitted on the outer wall of the nut 1 through a plurality of second claws 6 . The second claws 6 play the role of clamping the nut 1 to prevent the nut 1 from falling off, and the plurality of second claws 6 achieve tight engagement with the nut 1 through multiple action points. The assembly between the various parts of this product structure adopts interference fit, using the claw structure, the contact surface is small, the force required for assembly is small, the requirements for assembly equipment are low, and it is easy to assemble quickly. If the shaft and hole structure is used, The contact surface is large, the pressure required for assembly is high, and the requirements for assembly equipment are high. During the rapid assembly process, the upper plate 3 and the lower plate 4 may be deformed, the pass rate is not high, and manpower and material resources are wasted.

In another technical solution, four second claws 6 are arranged symmetrically and arranged along the direction of a pair of U-shaped notches 8 . The upper plate 3 is a strip-shaped plate structure, and four second claws 6 are symmetrically distributed on both sides of the upper plate 3 along the length direction of the upper plate 3 .

In another technical solution, a plurality of third claws 7 are provided in the circumferential direction of the through hole of the lower plate 4, and are integrally formed with the lower plate 4, and the third claws 7 are directed toward the The nut 1 is a plate structure arranged obliquely, there is a gap between the third claw 7 and the nut 1 , and there is a gap between the apex of the third claw 7 and the upper plate 3 . The lower plate 4 is movable, the upper plate 3 and the nut 1 are locked together, and the gap between the third claw 7 and the nut 1 and between the third claw 7 and the upper plate 3 plays the role of controlling the moving distance of the nut 1 .

In another technical solution, there are four third claws 7 arranged symmetrically along the direction of the pair of first claws 5 . The lower plate 4 is also an elongated plate-shaped structure, and the four third jaws 7 correspond exactly to the four second jaws 6 arranged above in the vertical direction.

In another technical solution, the first claw 5 includes a vertical part 9, a curved part 10 and a limiting part 11 which are sequentially connected as one, and the three form an S-like plate structure. The width of the claw 5 is smaller than the width of the U-shaped notch 8, the bottom of the vertical part 9 is integrally formed with the lower plate 4, and the concave arc surface of the curved part 10 is set toward the nut 1, so The limiting portion 11 is also arranged in an arc shape and located above the upper plate 3 .

In the above technical solution, the gaps between the vertical portion 9 of the first claw 5 and the third claw 7 and the upper plate 3 are all from the vertical control nut 1 to move. The gap between the curved portion 10 of the first claw 5 and the two sides and the bottom surface of the U-shaped notch 8 is used to control the movement range of the nut 1 from the horizontal plane. The limiting portion 11 of the first claw 5 plays a role of clamping the upper plate 3 to prevent the upper plate 3 from falling off, and at the same time limit the vertical movement range of the nut 1 .

In another technical solution, the through hole of the lower plate 4 is recessed inward to form a groove for fixing the vertical portion 9 of the first claw 5 . The first claw 5 is located in the middle of a pair of adjacent third claws 7, and the range of the through hole of the lower plate 4 is such that the first claw 5 and the third claw 7 extend outward and upward from the through hole. .

The present invention also provides a method for installing and using the structure of the floating nut 1, which includes the following steps:

Step 1, the nut 1 passes through the positioning pin on the workbench 12 through its threaded hole, and the bottom of the flange 2 of the nut 1 falls on the workbench 12;

Step 2, the lower plate 4 passes through the nut 1 through its central through hole and is positioned outside the flange 2 of the nut 1, so that the bottom surface of the lower plate 4 is placed on the workbench 12;

Step 3. Put the upper plate 3 on the pressure head 13 of the press-fitting machine, start the press-fitting process, and clamp the nut 1 through the second jaw 6 on the upper plate 3, and the curved part 10 of the first jaw 5 has a concave arc surface The gap between the bottom surface of the U-shaped notch 8 and the gap between the first claw 5 and the two sides of the U-shaped notch 8 is the horizontal range of movement of the nut 1. The third claw 7 on the lower plate 4 and the upper plate 3 The gap between them, the height of the vertical part 9 of the first claw 5 and the gap between the node of the curved part 10 of the first claw 5 and the limit part 11 and the upper plate 3 are the vertical range of movement of the nut 1;

Step 4: After the press-fitting is completed, remove the upper board 3 and the lower board 4 .

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (9)

1. A floating nut structure, comprising:

a nut having a flange;

the upper plate is sleeved on the outer side of the nut and is in interference fit with the outer side wall of the nut, and a pair of concave U-shaped notches are symmetrically arranged on two opposite sides of the upper plate;

the nut comprises a lower plate, wherein a through hole is formed in the center of the lower plate and is sleeved outside a flange of the nut, a gap is formed between the through hole and the outer side wall of the flange of the nut, a pair of first clamping jaws are arranged on the lower plate corresponding to a pair of U-shaped notches, and the first clamping jaws are matched in the U-shaped notches and are arranged to be movable in the horizontal plane and the vertical plane along the U-shaped notches.

2. The floating nut arrangement of claim 1 wherein said nut has a threaded bore in the center, said nut is of hexagonal configuration and the flange is of circular configuration.

3. The floating nut structure of claim 2 wherein said upper plate has a hole therethrough at its center, and a plurality of second jaws are disposed circumferentially and integrally with said upper plate, said second jaws are plate-like structures protruding toward the nut side and protruding out of the upper plate side, and said upper plate is interference-fitted to said nut outer sidewall by a plurality of second jaws.

4. A floating nut structure as defined in claim 3 wherein said second jaws are symmetrically disposed four and are disposed along the direction of a pair of U-shaped notches.

5. The floating nut structure of claim 1, wherein a plurality of third jaws are circumferentially disposed in the through hole of the lower plate and are integrally formed with the lower plate, the third jaws are plate-shaped structures obliquely disposed toward the nut, a gap is formed between the third jaws and the nut, and a gap is formed between the top of the third jaws and the upper plate.

6. The floating nut arrangement as claimed in claim 5, characterized in that said third jaws are provided in four and symmetrically arranged in the direction of the pair of first jaws.

7. The floating nut structure according to claim 6, wherein the first claw comprises a vertical portion, a bending portion and a limiting portion, which are connected in sequence to form an S-shaped plate-like structure, the width of the first claw is smaller than that of the U-shaped notch, the bottom of the vertical portion is integrally formed with the lower plate, the concave arc surface of the bending portion is arranged towards the nut, and the limiting portion is also arranged in an arc shape and located above the upper plate.

8. The floating nut structure of claim 7 wherein said through hole of said lower plate is recessed to form a recess for fixedly locating said vertical portion of said first jaw.

9. The mounting and using method of the floating nut structure is characterized by comprising the following steps:

firstly, a nut passes through a positioning pin on a workbench through a threaded hole of the nut, and the bottom surface of a flange of the nut falls down on the workbench;

secondly, the lower plate penetrates through the nut through a central through hole of the lower plate and is positioned outside a flange of the nut, so that the bottom surface of the lower plate is positioned on the workbench;

placing the upper plate on a pressure head of the press-fitting machine, starting press-fitting, clamping the nut through a second clamping jaw on the upper plate, wherein a gap between a concave arc surface of a bending part of the first clamping jaw and the bottom surface of the U-shaped notch and a gap between the first clamping jaw and two sides of the U-shaped notch are horizontal moving ranges of the nut, and a gap between a third clamping jaw on the lower plate and the upper plate, the height of a vertical part of the first clamping jaw and a gap between a node of the bending part and the limiting part of the first clamping jaw and the upper plate are vertical moving ranges of the nut;

and step four, after the press mounting is finished, taking down the upper plate and the lower plate.

Images