Nut press-fitting structure

Abstract

The utility model provides a nut press-fitting structure. The nut press-fitting structure comprises a stress base, a positioning guide hole with an upward opening is formed in the stress base, an elastic element is arranged in the positioning guide hole, a positioning mandrel is arranged on the elastic element, one side of the positioning mandrel extends outwards to form a positioning ring, a pressing strip is fixed to the stress base, and the pressing strip is fixed to the stress base. The pressing strip limits the axial displacement of the positioning ring, the end, away from the stress base, of the positioning mandrel is sleeved with a product base, a product hole is formed in the product base, a pressing-in structure is arranged on the product base, and a product is pressed into the product hole of the product base through the pressing-in structure. The number of parts is reduced, the manufacturing cost is reduced, the assembling process is simpler, more convenient and quicker, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nut press -fitting structure. BACKGROUND

[0002] In the field of mechanical engineering, fastener manufacturing and automation equipment, nut press -fitting structure is an important mechanical assembly, which is usually used to press the nut into the base structure to ensure the stability and reliability of the connection, especially in automation equipment, nut press -fitting structure needs to have high precision and stability to ensure the smoothness and safety of equipment operation. The existing nut press -fitting structure usually adopts complex structure design, including multiple parts and complex connection mode. Although these structure designs can realize high precision and stability, they also bring problems such as high cost, complex structure and difficult assembly. In addition, the existing nut press -fitting structure also has some problems in actual application, such as shaking and instability in the press -fitting process, which not only affects the stability and reliability of the connection, but also affects the normal operation of the equipment. SUMMARY

[0003] In view of the defects of the existing nut press -fitting structure, the technical problem to be solved by the utility model is to provide a nut press -fitting structure with simple and reliable structure.

[0004] In order to achieve the above purpose, according to one aspect of the utility model, the utility model is realized through the following technical measures:

[0005] A nut press -fitting structure, comprising: a force base, a positioning guide hole with an opening upward is opened in the force base, an elastic element is arranged in the positioning guide hole, a positioning mandrel is arranged on the elastic element, the positioning mandrel extends outward on one side to form a positioning ring, a pressing strip is fixed on the force base, the pressing strip limits the axial displacement of the positioning ring, a product base is arranged on the end of the positioning mandrel away from the force base, a product hole is opened in the product base, a press -in structure is arranged on the product base, and the press -in structure presses the product into the product hole of the product base.

[0006] Further, the positioning guide hole is three-section stepped, the diameter decreases from top to bottom, the elastic element is a spring, the spring is arranged in the middle section of the positioning guide hole, the spring abuts against the bottom surface of the positioning mandrel, the positioning ring of the positioning mandrel is arranged in the upper section of the positioning guide hole, and the bottom surface of the positioning ring of the positioning mandrel leaves a gap with the bottom surface of the upper section of the positioning guide hole in the natural state.

[0007] Further, the force base is provided with pressing strip grooves on both sides, the pressing strip is provided with a limiting groove, a bolt passes through the limiting groove and the pressing strip groove to be fixed, the pressing strip groove is communicated with the positioning guide hole, and the bottom surface of one end of the pressing strip abuts against the top surface of the positioning ring of the positioning mandrel.

[0008] Further, the force-receiving base is provided with an annular slot opening downward at the bottom, the inner wall of the annular slot forms a cylindrical central shaft, the force-receiving base is provided with a central hole communicating with the lower section of the positioning guide hole of the force-receiving base, the bottom of the central shaft is provided with a positioning sleeve, the positioning sleeve extends downward to form a plug-in column, the plug-in column is provided with a pressing plate, and the force-receiving base is arranged above the pressing plate.

[0009] Further, the positioning ring of the positioning mandrel is provided with annular grooves at the upper and lower ends of the inner ring, so as to prevent the problem of air pressure imbalance when the positioning mandrel is pressed in and pressed out.

[0010] Further, the force-receiving base is cylindrical, the bottom of the force-receiving base extends outward to form a base outer ring, the base outer ring and the force-receiving base are provided with a circular guide slot opening upward, the outer wall of the base outer ring is provided with an arc-shaped guide slot, and the arc-shaped guide slot and the circular guide slot are perpendicular and communicate with each other.

[0011] Further, the circular guide slot of the force-receiving base is provided with a positioning support block, the positioning support block is an arc-shaped rectangular block, the arc-shaped rectangular block matches the arc of the circular guide slot of the base outer ring, the positioning support block can slide along the circular guide slot, and the positioning support block is fixed with the base outer ring by bolts passing through the arc-shaped guide slot of the force-receiving base.

[0012] Further, the top end of the positioning support block is fixed with a positioning piece and a positioning strip, the product base outer wall is provided with a positioning piece hole and a positioning strip hole corresponding to the positioning piece and the positioning strip, and the positioning piece and the positioning strip are respectively inserted and fixed with the positioning piece hole and the positioning strip hole.

[0013] Further, the pressing structure comprises a pressing head, the pressing head is hexagonal, the bottom of the pressing head is provided with a magnet for attracting a product nut, the pressing head is provided with a guide sleeve, the guide sleeve is cylindrical, the inside of the guide sleeve is provided with an insertion hole matching the shape of the product nut at the lower end, the product hole of the product base matches the shape of the product nut, and the shaft center of the product hole of the product base corresponds to the shaft center of the insertion hole of the guide sleeve.

[0014] Compared with the prior art, the structure design is simplified, the number of parts is reduced, the manufacturing cost is reduced, the assembly process is more convenient and fast, the working efficiency is improved, the spring and the pressing strip effectively reduce the shaking and instability, and the stability and reliability of the connection are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0016] Figure 1 A structural schematic view of the nut press-fitting structure.

[0017] Figure 2 An explosion schematic view of the nut press-fitting structure.

[0018] Figure 3 A sectional view of the press-in structure.

[0019] Figure 4 A sectional view of the stress base.

[0020] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings: DETAILED DESCRIPTION

[0021] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the description of the utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4The nut press-fitting structure comprises a force receiving base 1, an upwardly open positioning guide hole 12 is formed in the force receiving base 1, an elastic element 25 is arranged in the positioning guide hole 12, a positioning mandrel 15 is arranged on the elastic element 25, the positioning mandrel 15 extends outward on one side to form a positioning ring 16, a press strip 17 is fixed on the force receiving base 1, the press strip 17 limits the axial displacement of the positioning ring 16, a product base 5 is sleeved on the end of the positioning mandrel 15 away from the force receiving base 1, a product hole 27 is formed in the product base 5, and a press-in structure 2 is arranged on the product base 5 and used for pressing a product into the product hole 27 of the product base 5.

[0024] The positioning guide hole 12 is in a three-section stepped shape, the diameter of the positioning guide hole 12 decreases from top to bottom, the elastic element 25 is a spring, the spring is arranged in the middle section of the positioning guide hole 12, the spring abuts against the bottom surface of the positioning mandrel 15, the positioning ring 16 of the positioning mandrel 15 is arranged in the upper section of the positioning guide hole 12, and a gap is left between the bottom surface of the positioning ring 16 of the positioning mandrel 15 and the bottom surface of the upper section of the positioning guide hole 12 in a natural state.

[0025] The force receiving base 1 is provided with a press strip groove 11 on both sides, a limiting groove 18 is formed in the press strip 17, a bolt passes through the limiting groove 18 of the press strip 17 and is fixed in the press strip groove 11, the press strip groove 11 is in communication with the positioning guide hole 12, and the bottom surface of one end of the press strip 17 abuts against the top surface of the positioning ring 16 of the positioning mandrel 15.

[0026] The bottom of the force receiving base 1 is provided with a downwardly open annular notch 28, the inner wall of the annular notch 28 forms a columnar central shaft 29, the bottom of the force receiving base 1 is provided with a central hole 30, the central hole 30 is in communication with the lower section of the positioning guide hole 12 of the force receiving base 1, the bottom of the central shaft 29 is sleeved with a positioning sleeve 13, the positioning sleeve 13 extends downward to form a plug-in column 14, the plug-in column 14 is sleeved with a press plate 6, and the force receiving base 1 is arranged above the press plate 6.

[0027] Annular grooves 26 are formed in the inner circle of the positioning ring 16 of the positioning mandrel 15 on both ends, so that the problem of air pressure imbalance when the positioning mandrel 15 is pressed in and pressed out is prevented.

[0028] The force receiving base 1 is in a cylindrical shape, the bottom of the force receiving base 1 extends outward to form a base outer ring 10, a circular guide groove 9 is formed between the base outer ring 10 and the force receiving base 1 and opens upward, an arc-shaped guide groove 8 is formed in the outer wall of the base outer ring 10, and the arc-shaped guide groove 8 and the circular guide groove 9 are perpendicular and in communication.

[0029] The circular guide groove 9 of the force receiving base 1 is provided with a positioning support block 19, the positioning support block 19 is an arc-shaped rectangular block, the arc-shaped rectangular block is matched with the arc of the circular guide groove 9 of the outer ring of the force receiving base 1, the positioning support block 19 can slide along the circular guide groove 9, and the positioning support block 19 is fixed with the outer ring 10 of the base through bolts passing through the arc-shaped guide groove 8 of the force receiving base 1.

[0030] The top end of the positioning support block 19 is fixed with a positioning piece 21 and a positioning strip 20, the product base 5 is provided with a positioning piece hole 23 and a positioning strip hole 22 corresponding to the positioning piece 21 and the positioning strip 20, and the positioning piece 21 and the positioning strip 20 are respectively inserted and fixed in the positioning piece hole 23 and the positioning strip hole 22.

[0031] The pressing structure 2 comprises a pressing head 4, the pressing head 4 is hexagonal, the bottom of the pressing head 4 is provided with a magnet for attracting a product nut 7, the pressing head 4 is provided with a guide sleeve 3, the guide sleeve 3 is cylindrical, the lower end of the guide sleeve 3 is provided with an insertion hole 24 matched with the shape of the product nut 7, the product hole 27 of the product base 5 is matched with the shape of the product nut 7, and the axis of the product hole 27 of the product base 5 corresponds to the axis of the insertion hole 24 of the guide sleeve 3.

[0032] When the nut pressing structure is used, the product base 5 is placed on the force receiving base 1, the positioning mandrel 15 is placed in the product hole 27 of the product base 5, the positioning piece 21 and the positioning strip 20 on the positioning support block 19 are adjusted, the product base 5 is stably fixed, the product nut 7 is placed in the guide sleeve 3 on the side of the pressing head 4, the product nut 7 is fixed by the magnetic attraction of the pressing head 4, the pressing head 4 is pushed to move downwards, the product nut 7 is pressed into the product base 5, in the process, the product base 5 is pushed to move downwards, the product base 5 pushes the positioning mandrel 15 to move downwards, the spring is compressed, the spring prevents the deformation of the parts under direct pressure, after successful pressing, the pressing head 4 moves upwards, the product nut 7 is retained in the product base 5 by overcoming the magnetic attraction after being pressed into the product base 5, at this time, the spring rebounds due to the elastic force of the spring, the positioning mandrel 15 is pushed to move upwards to the pressing strip 17, and the product base 5 is pushed back to the initial position.

[0033] The above only describes preferred embodiments of the utility model and is not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A nut press-fit structure comprising: The utility model discloses a force base, the positioning guide hole of opening upwards is formed in the force base, and the positioning guide hole is characterized by being equipped with elastic element, the positioning guide hole is equipped with positioning arbor on the elastic element, the positioning arbor forms the positioning ring to the outside one side, the force base is fixed with the pressure bar, the pressure bar restricts the axial displacement of positioning ring, the one end of positioning arbor away from the force base is equipped with product base, the product base is opened the product hole, and the product base is equipped with the pressure structure, and the pressure structure is pressed into the product hole in the product base.

2. The nut press fitting structure according to claim 1, characterized by: The positioning guide hole is three-stage ladder shape, and the diameter decreases from top to bottom, the elastic element is spring, the spring is placed in the middle section of positioning guide hole, the spring is in contact with the bottom surface of positioning arbor, the positioning ring of positioning arbor is arranged in the upper section of positioning guide hole, and the bottom surface of positioning ring of positioning arbor leaves the gap with the bottom surface of the upper section of positioning guide hole in natural state.

3. The nut press-fit structure according to claim 2, characterized in that: The both sides of the force base are provided with pressure bar grooves, the pressure bar is provided with a limiting groove, a bolt passes through the limiting groove of the pressure bar and the pressure bar groove to be fixed, the pressure bar groove is communicated with the positioning guide hole, and the bottom surface of one end of the pressure bar is in contact with the top surface of the positioning ring of the positioning arbor.

4. The nut press-fit structure of claim 1, wherein: The bottom of the force base is provided with a downwardly opening annular notch, the inner wall of the annular notch forms a columnar central shaft, the bottom of the force base is provided with a central hole, the central hole is communicated with the lower section of the positioning guide hole of the force base, the bottom of the central shaft is provided with a positioning sleeve, the positioning sleeve extends downwardly to form a plug-in column, the plug-in column is provided with a pressing plate, and the force base is arranged above the pressing plate.

5. The nut press-fit structure of claim 1, wherein: The inner ring of the positioning ring of the positioning arbor is provided with annular grooves at both ends.

6. The nut press-fit structure of claim 1, wherein: The force base is in a cylindrical shape, the bottom of the force base extends outwardly to form a base outer ring, a circular guide groove is formed between the base outer ring and the force base, the outer wall of the base outer ring is provided with an arc-shaped guide groove, and the arc-shaped guide groove and the circular guide groove are perpendicular and communicated with each other.

7. The nut press-fit structure according to claim 6, characterized in that: The circular guide groove of the force base is provided with a positioning support block, the positioning support block is an arc-shaped rectangular block, the arc of the positioning support block is matched with the arc of the circular guide groove of the base outer ring, the positioning support block can slide along the circular guide groove, and the positioning support block is fixed with the base outer ring by a bolt passing through the arc-shaped guide groove of the force base.

8. The nut press-fit structure according to claim 7, characterized in that: The top end of the positioning support block is fixed with a positioning sheet and a positioning strip, the outer wall of the product base is provided with a positioning sheet hole and a positioning strip hole corresponding to the positioning sheet and the positioning strip, and the positioning sheet and the positioning strip are respectively plugged into and fixed with the positioning sheet hole and the positioning strip hole.

9. The nut press-fit structure of claim 1, wherein: The pressure structure comprises a pressure head, the pressure head is in a hexagonal prism shape, the bottom of the pressure head is provided with a magnet for attracting a product nut, the pressure head is provided with a guide sleeve, the guide sleeve is in a cylindrical shape, the inside of the guide sleeve is provided with a plug-in hole matched with the shape of the product nut at the lower end, the product hole of the product base is matched with the shape of the product nut, and the shaft center of the product hole of the product base corresponds to the shaft center of the plug-in hole of the guide sleeve.

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