Rivet nut and stud connecting device

Abstract

The utility model discloses a rivet nut and stud connecting device which comprises a nut body, an inner threaded sleeve is fixedly connected in the nut body, a deformation section is arranged on the nut body, a clamping plate is fixedly connected to the top of the deformation section, and a threaded stud in sliding fit with the clamping plate is inserted in the clamping plate. Force is continuously applied to the nut body through rotation of the threaded column, the deformation section of the nut body deforms, a workpiece is extruded, locked and fixed, the inner threaded sleeve gets close to the direction of the clamping plate along with deformation of the deformation section, the reverse clamping rod is inserted into the clamping hole, reverse clamping positioning of the inner threaded sleeve is achieved, and after completion, the nut body is locked and fixed. The threaded column is reversely screwed to be separated from the inner threaded sleeve, at the moment, under the reverse positioning effect that the reverse clamping rod is matched with the clamping hole, the deformation section is prevented from being reversely stretched and loosened, the locking effect is guaranteed, and therefore the device has the advantages that when the stud is locked and detached, the fastening effect of the rivet nut is guaranteed, and loosening is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rivet nut technology, and more specifically, to a rivet nut stud connection device. Background Art

[0002] Riveting refers to the plastic deformation of the riveted parts under external tensile force during the riveting process. The deformation typically occurs at specially designed locations, and a reliable connection is achieved by clamping the deformed parts to the base material. Rivet studs are industrial fasteners, also known as rivet nuts, rivet caps, or instant rivet caps. They are widely used in the assembly of electromechanical and light industrial products such as automobiles, aerospace, instruments, furniture, and decoration. Developed to address the shortcomings of welding nuts on thin metal sheets and tubes, such as easy melting and stripping of internal threads, rivets eliminate the need for tapping internal threads and welding nuts, offering strong, efficient, and convenient riveting.

[0003] However, the current method of operating rivet nuts is to insert the nut into a pre-drilled hole, then insert the screw and continue to screw it in. Once the outer end of the screw contacts the outer end of the nut and can no longer advance, it will cause the inner end of the nut to move along the screw, achieving rivet deformation and squeezing the workpiece from the inside to achieve locking. After the operation is completed, the stud usually needs to be removed. However, when removing the stud, reversing it will generate a reverse force on the already deformed and tightened screw, causing the originally tight nut to loosen and affecting the tightening effect. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a rivet nut stud connection device that facilitates the disassembly of the threaded stud while ensuring the locking effect of the device, thus solving the above-mentioned background technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] A rivet nut stud connection device includes a nut body, an internal threaded sleeve fixedly connected inside the nut body, a deformation section provided on the nut body, a retaining plate fixedly connected to the top of the deformation section, a threaded stud that slides with the retaining plate inserted inside the retaining plate, the bottom end of the threaded stud extending downward into the interior of the internal threaded sleeve and threadedly connected thereto, two vertical anti-reverse retaining rods fixedly connected inside the deformation section, and two retaining holes that cooperate with the anti-reverse retaining rods being opened at the top of the internal threaded sleeve.

[0007] As a further description of the above technical solution: the inside of the card hole is fixedly connected with a reverse locking tooth, and the reverse locking rod has vertically arranged reverse locking grooves on the side facing the reverse locking tooth.

[0008] As a further description of the above technical solution: the bottom end of the internal threaded sleeve is provided with an external retaining ring, and the top of the external retaining ring is fixedly connected to the bottom of the nut body.

[0009] As a further description of the above technical solution: the outer diameter of the deformation section is smaller than the outer diameter of the nut body.

[0010] As a further description of the above technical solution: a contact ring is rotatably connected to the top of the card plate, and a toggle block is fixedly connected to the top of the threaded column, with the top of the contact ring and the bottom of the toggle block in contact engagement.

[0011] As a further description of the above technical solution: the connection between the internal threaded sleeve and the nut body is serrated.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] This solution uses a reverse slot in conjunction with the reverse teeth inside the slot to position the internal threaded sleeve, which facilitates the disassembly of the threaded post while ensuring the locking effect of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of section A in the middle;

[0016] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0017] Figure 4 This is a three-dimensional structural diagram of the internal threaded sleeve of this utility model.

[0018] Explanation of the labels in the diagram:

[0019] 1. Nut body; 2. Internal threaded sleeve; 21. External retaining ring; 3. Deformation section; 4. Clamping plate; 41. Contact ring; 5. Threaded post; 51. Actuating block; 6. Reverse clamping rod; 61. Reverse clamping groove; 7. Clamping hole; 71. Reverse clamping tooth. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0021] Please see Figure 1-4In this utility model, a rivet nut stud connection device includes a nut body 1, an internal threaded sleeve 2 fixedly connected inside the nut body 1, a deformation section 3 provided on the nut body 1, a retaining plate 4 fixedly connected to the top of the deformation section 3, a threaded stud 5 that slides with the retaining plate 4 inserted inside the retaining plate 4, the bottom end of the threaded stud 5 extending downward into the interior of the internal threaded sleeve 2 and threadedly connected thereto, two vertical anti-reverse retaining rods 6 fixedly connected inside the deformation section 3, and two retaining holes 7 that cooperate with the anti-reverse retaining rods 6 on the top of the internal threaded sleeve 2.

[0022] In this invention, the nut body 1 serves as the main body of the device. During use, the threaded post 5 is first screwed into the nut body 1, then the nut body 1 is inserted into a pre-drilled hole on the workpiece. The threaded post 5 is then pressed and rotated further. The rotation of the threaded post 5 applies force to the nut body 1, causing its deformation section 3 to deform, thus achieving compression and locking of the workpiece. As the deformation section 3 deforms, the inner threaded sleeve 2 moves closer to the clamping plate 4, allowing the anti-locking rod 6 to insert into the clamping hole 7 to reverse-lock and position the inner threaded sleeve 2. After completion, the threaded post 5 is reverse-tightened to disengage from the inner threaded sleeve 2. At this point, the anti-locking rod 6, in conjunction with the clamping hole 7, prevents the deformation section 3 from being stretched loose, ensuring the locking effect. This device achieves the advantage of ensuring the tightness of the rivet nut and preventing loosening when locking and disassembling the stud. It solves the problem in the prior art where reversing the stud during disassembly generates a reverse force on the already deformed and tightened nut, causing the originally tight nut to loosen and affecting the tightening effect.

[0023] Please see Figure 2 The internal part of the card hole 7 is fixedly connected with a reverse card tooth 71, and the reverse card rod 6 has a vertically arranged reverse card groove 61 on the side facing the reverse card tooth 71.

[0024] In this invention, as the internal threaded sleeve 2 is moved, the reverse locking rod 6 is inserted into the inside of the locking hole 7, and the reverse locking tooth 71 is engaged in the inside of the reverse locking groove 61, thereby achieving connection and positioning of the reverse locking rod 6 and the internal threaded sleeve 2 and preventing loosening.

[0025] Please see Figure 1 and Figure 4 The inner threaded sleeve 2 has an outer retaining ring 21 at its bottom end, and the top of the outer retaining ring 21 is fixedly connected to the bottom of the nut body 1.

[0026] In this invention, the outer retaining ring 21 makes the compressive force of the inner threaded sleeve 2 on the nut body 1 more stable and uniform.

[0027] Please see Figure 1 Wherein: the outer diameter of the deformation section 3 is smaller than the outer diameter of the nut body 1.

[0028] In this invention, the outer diameter of the deformation section 3 is smaller than the outer diameter of the nut body 1 to ensure that the position of the applied force deformation is more accurate and to achieve a better fastening effect.

[0029] Please see Figure 1 and Figure 3 The top of the card plate 4 is rotatably connected to a contact ring 41, and the top of the threaded column 5 is fixedly connected to a toggle block 51. The top of the contact ring 41 and the bottom of the toggle block 51 are in contact and engaged.

[0030] In this utility model, the toggle block 51 facilitates the use of tools to turn the threaded post 5, and the threaded post 5 continues to rotate after contacting the contact ring 41 on the card plate 4, reducing resistance. At the same time, it is easier and less effort to disassemble when flipping over.

[0031] Please see Figure 1 Wherein: the connection between the internal threaded sleeve 2 and the nut body 1 is serrated.

[0032] In this invention, the connection between the internal threaded sleeve 2 and the nut body 1 is serrated, which makes the connection between the internal threaded sleeve 2 and the nut body 1 more stable.

[0033] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A rivet nut stud connection device, comprising a nut body (1), characterized in that: The nut body (1) is fixedly connected to an internal threaded sleeve (2). The nut body (1) is provided with a deformation section (3). The top of the deformation section (3) is fixedly connected to a retaining plate (4). A threaded post (5) that slides with the retaining plate (4) is inserted inside the retaining plate (4). The bottom end of the threaded post (5) extends downward into the interior of the internal threaded sleeve (2) and is threadedly connected to it. The deformation section (3) is fixedly connected to two vertical anti-reverse retaining rods (6). The top of the internal threaded sleeve (2) has two retaining holes (7) that cooperate with the anti-reverse retaining rods (6).

2. The rivet nut and stud connection device according to claim 1, characterized in that: The card hole (7) is fixedly connected to a reverse locking tooth (71), and the reverse locking rod (6) has vertically arranged reverse locking grooves (61) on the side facing the reverse locking tooth (71).

3. The rivet nut and stud connection device according to claim 1, characterized in that: The bottom end of the internal threaded sleeve (2) is provided with an external retaining ring (21), and the top of the external retaining ring (21) is fixedly connected to the bottom of the nut body (1).

4. The rivet nut and stud connection device according to claim 1, characterized in that: The outer diameter of the deformation section (3) is smaller than the outer diameter of the nut body (1).

5. The rivet nut and stud connection device according to claim 1, characterized in that: The top of the card plate (4) is rotatably connected to a contact ring (41), and the top of the threaded column (5) is fixedly connected to a toggle block (51). The top of the contact ring (41) and the bottom of the toggle block (51) are in contact and fit together.

6. The rivet nut and stud connection device according to claim 1, characterized in that: The connection between the internal threaded sleeve (2) and the nut body (1) is serrated.

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