CN210830101U - Moving self-locking nut assembly - Google Patents

Abstract

The utility model discloses a traveling self-locking nut assembly, which comprises a bushing body and a backing plate. A limit part axially extends from the middle of the backing board; , the slot is opened on the outer peripheral surface of the limiting portion, and the insertion port communicates the accommodating cavity with the outside; the self-locking nut has a radially symmetrically extending limit protrusion at the lower end, and the self-locking nut is formed by the The insertion inlet is placed in the accommodating cavity; the inner diameter of the retaining ring is smaller than the maximum distance between the outer edges of the two limiting protrusions, and the retaining ring is clamped into the slot to limit the self-locking The nut comes out from the insertion port, and the lower end face of the retaining ring is not lower than the upper end face of the limiting protrusion, which can not only solve the problem of the eccentricity of the inner hole of the bushing and the threaded hole of the self-locking nut of the support plate, which may cause the difficulty of screwing the bolt, The problem of poor connection also has the advantage of only needing to replace the self-locking nut of the pallet without disassembling the bushing body.

Description

A swimming self-locking nut assembly

technical field

The utility model belongs to the technical field of self-locking nuts, in particular to a traveling self-locking nut assembly.

Background technique

The existing components used for internal non-contact composite material connection are mainly composed of bolts, bushings and self-locking nuts of the support plate. The general specific implementation is as follows: firstly, the connected composite material laminates are lapped and fixed according to the specific positioning size requirements, and then punched to ensure the concentricity of the holes made on the upper and lower laminates. Then put glue on the side of the outer cylinder of the bushing and place it in the holes of the upper and lower laminates. Insert the bolts into the bushing body to align and then pull out the bolts to disassemble the upper and lower laminates. Wait until the bushings and laminates are glued firmly. Secondly, the bolts are placed in the bushings in the lower laminate. After the self-locking nuts of the pallets are connected and fixed with the bolts, the self-locking nuts of the pallets are riveted on the lower laminates, and the bolts are removed. Finally, the upper and lower laminates are assembled in place, the bolts pass through the upper and lower laminates in sequence, and are screwed into the self-locking nuts of the pallets riveted on the lower laminate to complete the connection. This connection method requires that the contact surface between the lower laminate and the self-locking nut of the pallet must be flat. However, in actual operation, both the upper and lower laminates may be curved surfaces, and the self-locking nut of the supporting plate is riveted and fixed, and the inner hole of the bushing and the threaded hole of the self-locking nut of the supporting plate are slightly eccentric, which will make it difficult to screw in and reduce the connection efficiency. . Furthermore, the self-locking nut of the pallet has a limited number of connections. For the parts that are frequently disassembled, the self-locking nut of the pallet fails to prevent loosening and needs to be replaced frequently. However, when the composite laminate is riveted for many times, the fibers will be damaged, resulting in structural damage, poor maintenance, and high cost.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a traveling self-locking nut assembly, which can not only solve the problem of difficulty in screwing the bolts and poor connection caused by the eccentricity of the inner hole of the bushing and the threaded hole of the self-locking nut of the support plate, but also has the advantages of only needing to replace the support plate. The plate self-locking nut has the advantages of no need to disassemble the bushing body, fast replacement and convenient maintenance; and is suitable for the connection of composite laminates with flat or curved surfaces, and has a wider range of applications.

In order to solve the above-mentioned technical problem, the purpose of this utility model is achieved like this:

A traveling self-locking nut assembly, comprising

The bushing body includes a backing plate, the middle of the backing plate extends axially with a limiting portion, the limiting portion has a accommodating cavity, a clamping groove and an insertion opening, and the clamping groove is opened on the outer peripheral surface of the limiting portion, the insertion port communicates the accommodating cavity with the outside;

The self-locking nut has a radially symmetrically extending limiting protrusion at the lower end, and the self-locking nut is inserted into the accommodating cavity through the insertion port;

The inner diameter of the retaining ring is smaller than the maximum distance between the outer edges of the two limiting protrusions. The lower end face is not lower than the upper end face of the limiting protrusion.

On the basis of the above solution and as a preferred solution of the above solution: the inner contour of the accommodating cavity is not smaller than the outer contour of the self-locking nut.

On the basis of the above solution and as a preferred solution of the above solution: a bushing is also included, and the bushing is located in the middle of the backing plate and away from the side where the limiting portion is located.

On the basis of the above solution and as a preferred solution of the above solution: a bushing extends in the middle of the backing plate and away from the limiting part, and a through hole connects the inner hole of the bushing with the accommodating cavity Pass.

On the basis of the above scheme and as a preferred scheme of the above scheme: the limit part is provided with a limit groove, the limit groove is away from the said inlet, and the limit groove is compatible with the limit protrusion match.

On the basis of the above scheme and as a preferred scheme of the above scheme: the self-locking nut is a pallet self-locking nut.

On the basis of the above solution and as a preferred solution of the above solution, the backing plate is symmetrically provided with first through holes.

On the basis of the above solution and as a preferred solution of the above solution, the backing plate is symmetrically provided with a second through hole.

Compared with the prior art, the present utility model has the following outstanding and beneficial technical effects:

1. It can solve the problem of difficulty in screwing the bolt and poor connection caused by the eccentricity of the inner hole of the bushing and the threaded hole of the self-locking nut of the support plate.

2. It has the advantage that the self-locking nut of the pallet can be replaced without disassembling the bushing body, and the replacement is fast and the maintenance is convenient.

3. The self-locking nut and spring retaining ring of the pallet can be selected as standard parts, which can greatly reduce the processing cost.

4. It is suitable for the connection of composite laminates with flat or curved surfaces, and has a wider range of applications.

Description of drawings

Fig. 1 is the front isometric side view of the structure of the present utility model;

Figure 2 is a rear isometric view of the structure of the present invention;

Figure 3 is a front isometric view of the bushing body;

Figure 4 is a rear isometric view of the bushing body;

Figure 5 is a schematic structural diagram of a retaining ring;

Fig. 6 is the structural representation of the pallet self-locking nut;

Fig. 7 is the assembly schematic diagram of the structure of the present utility model;

FIG. 8 is a diagram of an application example of the structure of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments. Obviously, the described embodiments are only a part of the present application. examples, but not all examples. Based on the given embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, Rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation on the application.

In the description of the present application, the terms "first", "second", etc. are only used for description purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features.

A traveling self-locking nut assembly, comprising

The bushing body 1 includes a backing plate 100 , a limiting portion 120 extending axially in the middle of the backing plate 100 , and the limiting portion 120 has a accommodating cavity 125 , a clamping slot 121 and an insertion port 124 , and the clamping slot is opened in the limiting position The insertion port communicates the accommodating cavity with the outside; and also includes a bushing 110, the bushing 110 is located in the middle of the backing plate 100 and away from the side where the limiting portion 120 is located.

Specifically, a bushing 110 is preferably extended in the middle of the backing plate 100 and away from the limiting portion 120, and the through hole 103 connects the inner hole of the bushing 110 with the accommodating cavity 125, thus forming a passage for the screw to pass through; this embodiment Preferably, the backing plate, the limiting portion and the bushing are integrally formed, and the connection between the backing plate 100 and the bushing 110 and the connection between the backing plate 100 and the limiting portion 120 adopts a rounded transition.

Considering the ease of assembly and fixation of the backing plate 100 , it is preferable that the backing plate 100 is symmetrically provided with first through holes 101 . In this embodiment, the first through holes 101 are rivet holes; in addition, the backing plate 100 is symmetrically provided with second through holes. 102. The second through hole 102 is a glue nail hole, which is pre-positioned first through the glue nail hole, and then fixed through the rivet hole through the rivet.

The self-locking nut 2 has a radially symmetrically extending limiting protrusion 21 at the lower end, and the self-locking nut 21 is inserted into the accommodating cavity 125 through the insertion port 124; preferably, the self-locking nut 2 is a pallet self-locking nut, which includes The self-locking nut 2 and the double lug support plate 20 fixed at the bottom end of the self-locking nut 2. In this embodiment, the self-locking nut 2 and the double lug support plate 20 are preferably integrally formed, and the double lug support plate 20 is symmetrically formed with weight reduction holes 211. , the thread of the self-locking nut 2 has a self-locking function, and the limiting protrusions 21 are the lugs on both sides of the double-ear support plate 20. Such a structure is provided on the one hand to limit the position of the self-locking nut, on the other hand, it can make the screw During the process of screwing in the self-locking nut, the self-locking nut is prevented from rotating by the double lug support plate 20 . The setting of the inlet 124 is a good solution to the limited number of connections of the self-locking nut of the pallet. For the parts that are frequently disassembled, the self-locking nut of the pallet fails to prevent loosening and needs to be replaced frequently. However, when the composite laminate is riveted for many times, the fibers will be affected. damage, resulting in structural damage, poor maintenance, and high cost. When replacing, you only need to take out the damaged self-locking nut 2 from the accommodating cavity through the insertion port, and put the qualified self-locking nut into the container through the insertion port. The replacement can be completed by placing it in the cavity, the replacement efficiency is high, and the backing plate does not need to be disassembled, and the composite material laminate will not be damaged.

The inner diameter of the retaining ring 3 is smaller than the maximum distance between the outer edges of the two limiting protrusions 21. After the retaining ring 3 is stuck in the slot 121, the self-locking nut 2 is restricted from coming out of the insertion port 124, and the lower end surface of the retaining ring 3 is not free. It is lower than the upper end surface of the limiting protrusion 21; it should be noted that in this embodiment, the retaining ring 3 is preferably a spring retaining ring, which is a standard part, and a clamping hole 31 is symmetrically arranged on the spring retaining ring; in addition, in order to facilitate the spring For the disassembly and assembly of the retaining ring, in this embodiment, preferably, one end of the spring retaining ring 3 having the clamping hole 31 is assembled and positioned above the limiting groove 123 .

In order to solve the problem in the actual assembly process, both the upper and lower laminates may be curved surfaces, and the self-locking nut of the support plate is riveted and fixed, and the inner hole of the bushing and the threaded hole of the self-locking nut of the support plate are slightly eccentric, which will make it difficult to screw in, and the connection efficiency In this embodiment, it is preferable that the inner contour of the accommodating cavity 125 is not smaller than the outer contour of the self-locking nut 2, so that the self-locking nut 2 is placed in the accommodating cavity 125, and there are gaps in the front, back, left and right and up and down for swimming It can automatically adjust and adapt when assembling with the bolt, which solves the problem of difficult screwing caused by eccentricity.

The specific working principle is:

The first step: the assembly of the self-locking nut assembly, insert the lug on one side of the self-locking nut of the support plate horizontally into the limit groove 123 on the bushing body 1, and insert the pliers of the circlip pliers into the pliers hole of the spring retaining ring 3 In 31, the expansion spring retaining ring 3 is put into the slot 121 of the upper limit device 120 of the bushing body 1, and the assembly of the floating self-locking nut assembly is completed;

Step 2: Lap and fix the composite material laminates 6 and 6' to be connected according to the specific positioning and size requirements, punch holes 62 and 62', disassemble the laminates 6 and 6', and align the bushing with the fixing hole 62. After that, glue the outer cylindrical side of the bushing 110 and insert it into the fixing hole 62, use a glue nail to pass through the second through hole for pre-positioning, and then prepare the rivet installation hole 61 according to the first through hole 101, and use the rivet to pass through the rivet installation hole. And the first through hole riveted and fixed the backing plate and the composite material laminate 6 . The two fixing holes are centered and coaxial, and then the screw 4 is passed through the bushing 5 and the bushing 110, and then the self-locking nut 2 and the screw 4 are connected, and the screw 4 is tightened to realize the connection.

The replacement principle of the self-locking nut 2 has been described in detail above, and will not be repeated here.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention shall be covered by the present invention. within the scope of protection of the utility model.

Claims (8)

1. The utility model provides a self-locking nut subassembly moves about which characterized in that: comprises that

The bushing body comprises a base plate, a limiting part axially extends from the middle of the base plate, the limiting part is provided with an accommodating cavity, a clamping groove and an inlet, the clamping groove is formed in the outer peripheral surface of the limiting part, and the accommodating cavity is communicated with the outside through the inlet;

the lower end of the self-locking nut is provided with a limiting bulge which extends radially and symmetrically, and the self-locking nut is placed into the accommodating cavity from the accommodating port;

the inner diameter of the retainer ring is smaller than the maximum distance between the outer edges of the two limiting bulges, the retainer ring is clamped into the clamping groove to limit the self-locking nut to be separated from the placing opening, and the lower end face of the retainer ring is not lower than the upper end face of the limiting bulges.

2. A traveling self-locking nut assembly according to claim 1 further characterized by: the inner contour of the accommodating cavity is not smaller than the outer contour of the self-locking nut.

3. A traveling self-locking nut assembly according to claim 1 further characterized by: still include the bush, the bush is located the backing plate middle part and deviates from spacing portion place side.

4. A traveling self-locking nut assembly according to claim 3 further characterized by: the middle part of the backing plate extends to form a bushing in the direction deviating from the limiting part, and an inner hole of the bushing is communicated with the accommodating cavity through a through hole.

5. A traveling self-locking nut assembly according to claim 1 further characterized by: the limiting part is provided with a limiting groove, the limiting groove deviates from the placing opening, and the limiting groove is matched with the limiting bulge.

6. A traveling self-locking nut assembly according to claim 1 further characterized by: the self-locking nut is a supporting plate self-locking nut.

7. A traveling self-locking nut assembly according to claim 1 further characterized by: first through holes are symmetrically formed in the base plate.

8. A traveling self-locking nut assembly according to claim 1 further characterized by: and the backing plate is symmetrically provided with second through holes.

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