Metal insert capable of automatically eliminating assembly clearance

Abstract

The utility model discloses a metal insert capable of automatically eliminating an assembly clearance, which relates to the technical field of insert structures and comprises an insert body and a clearance compensator. When the bolt is screwed into the insert body, the screwing direction of the external thread of the bolt is consistent with that of the second thread of the insert body, the screwing direction of the third thread of the clearance compensator is consistent with that of the first thread of the insert body, and the screwing direction of the bolt is opposite to that of the third thread, so that the clearance compensator gradually ascends along the third thread along with the screwing of the bolt; the effect of eliminating the gap between the gap compensator and the connected piece is achieved, the insert body is not prone to being pulled out and losing efficacy, and the connected piece is not prone to stress deformation through contact between the second flange and the connected piece.

Description

Technical Field

[0001] The utility model relates to the technical field of insert structures, in particular to a metal insert capable of automatically eliminating assembly gaps. Background Art

[0002] Plastic inserts are components embedded in plastic to connect and fasten components and increase the local mechanical properties of plastic parts.

[0003] During the actual assembly process, due to the cumulative tolerances between the insert body, bolts, and plastic parts, as well as factors such as part interference, there is often an assembly gap (between the connected parts and the insert), resulting in poor performance. In addition, during the tightening process, the metal insert is prone to pull-off and failure, and the connected parts are prone to deformation under stress.

[0004] In view of this, there is an urgent need for a metal insert that can automatically eliminate assembly gaps. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention solves the problem with the following technical structure.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A metal insert for automatically eliminating assembly gaps, comprising: an insert body and a gap compensator;

[0008] The insert body is provided with a first flange at the end thereof, a first thread is provided at one end of the insert body close to the first flange, and a second thread adapted to the bolt is provided at one end of the insert body away from the first flange.

[0009] The gap compensator is annular, and a second flange matching the first flange is provided at the end of the gap compensator. A third thread consistent with the rotation direction of the first thread is provided on the ring side of the gap compensator. An elastic member is provided at the end of the gap compensator away from the second flange. When the bolt is screwed into the gap compensator, the elastic member clamps the bolt.

[0010] It is further characterized in that

[0011] The ring side of the insert body is provided with knurling.

[0012] The knurling adopts positive and negative twill patterns.

[0013] The ring side of the insert body is provided with a ring groove.

[0014] The elastic member is composed of a plurality of elastic rods distributed in a circumference.

[0015] A protrusion is provided on the inner side of the elastic rod.

[0016] The distance between the two oppositely arranged protrusions is smaller than the diameter of the bolt.

[0017] Four elastic rods are provided.

[0018] The insert body and the clearance compensator are both made of metal.

[0019] There are at least two knurling patterns.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] During use, when the bolt is screwed into the insert body, the external thread of the bolt is consistent with the second thread of the insert body, and the third thread of the gap compensator is consistent with the first thread of the insert body. Since the screwing direction of the bolt is opposite to the third thread, the gap compensator gradually rises along the third thread as the bolt is screwed in until the second flange fits with the connected part, thereby eliminating the gap between the gap compensator and the connected part. The insert body is not easy to pull off and fail, and it contacts the connected part through the second flange, so that the connected part is not easily deformed by force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a diagram of the use state of the utility model;

[0023] Figure 2 It is a structural diagram of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the insert body in the present utility model;

[0025] Figure 4 This is a structural diagram of the gap compensator in the utility model.

[0026] In the figure: 1. Insert body; 11. First flange; 12. Knurling; 13. Ring groove; 14. First thread; 15. Second thread; 2. Backlash compensator; 21. Second flange; 22. Third thread; 23. Elastic member; 24. Through hole; 3. Bolt; 4. Connected member; 5. Plastic member. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or equipment.

[0029] The following is combined with Figures 1-4 This application is described in further detail.

[0030] refer to Figures 1-4 The metal insert for automatically eliminating assembly gap shown includes: an insert body 1 and a gap compensator 2, wherein the gap compensator 2 is installed in the insert body 1 through threads;

[0031] The insert body 1 is provided with a first flange 11 at its end, a first thread 14 is provided at one end of the insert body 1 close to the first flange 11, and a second thread 15 adapted to a bolt is provided at one end of the insert body 1 away from the first flange 11.

[0032] The clearance compensator 2 is annular (i.e., a through hole 24 is provided on the clearance compensator 2), and a second flange 21 matching the first flange 11 is provided at the end of the clearance compensator 2. A third thread 22 having the same rotation direction as the first thread 14 is provided on the annular side of the clearance compensator 2 (for example, the first thread 14 is a left-handed internal thread, the second thread 15 is a right-handed internal thread, and the third thread 22 is a left-handed external thread). An elastic member 23 is provided at the end of the clearance compensator 2 away from the second flange 21. When the bolt is screwed into the clearance compensator 2, the elastic member 23 clamps the bolt.

[0033] Based on the above structure, during use, the insert body 1 is embedded in the plastic part 5, and the insert body 1, the gap compensator 2 and the connected part 4 are connected by the bolt 3. Since there is a gap between the gap compensator 2 and the connected part 4; since the bottom of the gap compensator 2 is elastically clamped with the bolt 3 by the elastic member 23, when the bolt 3 is screwed into the insert body 1, the external thread of the bolt 3 is consistent with the second thread 15 of the insert body 1, and the third thread 22 of the gap compensator 2 is consistent with the first thread 14 of the insert body 1. Since the screwing direction of the bolt 3 is opposite to that of the third thread 22, the gap compensator 2 gradually rises along the third thread 22 as the bolt 3 is screwed in until the second flange 21 is in contact with the connected part 4 (such as Figure 1 As shown), it plays the role of eliminating the gap between the gap compensator 2 and the connected part 4. The insert body 1 is not easy to be pulled off and fails. It contacts the connected part 4 through the second flange 21, making the connected part 4 not easily deformed by force.

[0034] like Figure 3As shown, the ring side of the insert body 1 is provided with knurls 12, and at least two knurls 12 are provided. The ring side of the insert body 1 is provided with an annular groove 13, and the annular groove 13 is preferably provided between adjacent knurls 12. In this way, the friction between the insert body 1 and the plastic part 5 is increased, and the occurrence of the insert body 1 being pulled off is reduced. In order to increase the friction of the knurls 12, the knurls 12 adopt positive and negative twill patterns.

[0035] like Figure 4 As shown, the elastic member 23 is composed of a plurality of elastic rods distributed in a circumferential manner (four elastic rods are provided in this embodiment). In order to improve the effect of clamping the bolt 3, a protrusion is provided on the inner side of the elastic rod. The distance between the two oppositely arranged protrusions is smaller than the diameter of the bolt. In this way, the smaller inner diameter between the protrusions is utilized to limit and clamp the bolt 3.

[0036] It is further optimized that the diameter of the second flange 21 is greater than or equal to the diameter of the first flange 11 to increase the contact area with the connected component 4 .

[0037] A further optimization is that both the insert body 1 and the clearance compensator 2 are made of metal, which increases the strength of the components and makes them less likely to deform.

[0038] The working principle of the utility model is as follows: during use, the insert body 1 is embedded in the plastic part 5, and the insert body 1, the gap compensator 2 and the connected part 4 are connected by the bolt 3. Since there is a gap between the gap compensator 2 and the connected part 4; since the bottom of the gap compensator 2 is elastically clamped with the bolt 3 by the elastic part 23, when the bolt 3 is screwed into the insert body 1, the external thread of the bolt 3 is consistent with the second thread 15 of the insert body 1, and the third thread 22 of the gap compensator 2 is consistent with the first thread 14 of the insert body 1. Since the screwing direction of the bolt 3 is opposite to the third thread 22, the gap compensator 2 gradually rises along the third thread 22 as the bolt 3 is screwed in, until the second flange 21 is in contact with the connected part 4, thereby eliminating the gap between the gap compensator 2 and the connected part 4. The insert body 1 is also not easy to pull off and fail, and is in contact with the connected part 4 through the second flange 21, so that the connected part 4 is not easily deformed by force.

[0039] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations directly derived or imagined by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the scope of protection of the present invention.

Claims

1. A metal insert that automatically eliminates assembly gaps, characterized in that: include: Insert body (1) and clearance compensator (2); The end of the insert body (1) is provided with a first flange (11), the end of the insert body (1) close to the first flange (11) is provided with a first thread (14), and the end of the insert body (1) away from the first flange (11) is provided with a second thread (15) adapted to the bolt; The clearance compensator (2) is annular, and a second flange (21) matching the first flange (11) is provided at the end of the clearance compensator (2). A third thread (22) having the same rotation direction as the first thread (14) is provided on the ring side of the clearance compensator (2). An elastic member (23) is provided at one end of the clearance compensator (2) away from the second flange (21). When a bolt is screwed into the clearance compensator (2), the elastic member (23) clamps the bolt.

2. The metal insert for automatically eliminating assembly gap according to claim 1, characterized in that: The ring side of the insert body (1) is provided with knurling (12).

3. The metal insert for automatically eliminating assembly gap according to claim 2, characterized in that: The knurling (12) adopts positive and negative twill patterns.

4. A metal insert for automatically eliminating assembly gaps according to any one of claims 1 to 3, characterized in that: An annular groove (13) is provided on the annular side of the insert body (1).

5. The metal insert for automatically eliminating assembly gap according to claim 1, characterized in that: The elastic member (23) is composed of a plurality of elastic rods distributed in a circumference.

6. The metal insert for automatically eliminating assembly gap according to claim 5, characterized in that: A protrusion is provided on the inner side of the elastic rod.

7. The metal insert for automatically eliminating assembly gap according to claim 6, characterized in that: The distance between the two oppositely arranged protrusions is smaller than the diameter of the bolt.

8. The metal insert for automatically eliminating assembly gaps according to claim 5, characterized in that: Four elastic rods are provided.

9. The metal insert for automatically eliminating assembly gaps according to claim 1, characterized in that: The insert body (1) and the clearance compensator (2) are both made of metal.

10. The metal insert for automatically eliminating assembly gaps according to claim 2, characterized in that: At least two knurling patterns (12) are provided.

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