Self-locking anti-loose muffler screw plug

Abstract

The utility model belongs to the technical field of silencer screw plug, especially relates to a self -locking anti -loose silencer screw plug, include: plug head, present ring column shape, and one end forms hexagonal cooperation hole, plug column, integral moulding in the one end of plug head without cooperation hole, its outside has outer thread, self -locking spare, the junction of plug head and plug column is set up, among them self -locking spare has anti -loosening piece and respectively with the inner wall of screw plug cooperation's thread hole and the outer end face extrusion pre -tightening.

Description

Technical Field

[0001] This utility model belongs to the technical field of muffler screw plugs, and particularly relates to a self-locking and anti-loosening muffler screw plug. Background Technology

[0002] A car muffler is a component used to reduce the noise generated by a motor vehicle's engine. Because the difference in length between the two pipes is equal to half the wavelength of the sound waves emitted by the car, the two sound waves interfere with each other when they are superimposed, thus reducing the sound intensity and achieving the effect of muffler. In our daily lives, we often see mufflers whose screw plugs become loose due to long-term use, thereby affecting the performance of the muffler. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a muffler bolt that is simple in structure and has a self-locking, anti-loosening feature.

[0004] In view of this, the present invention provides a self-locking anti-loosening muffler plug, comprising: The plug is cylindrical in shape, with a regular hexagonal fitting hole formed at one end; The plunger is integrally formed at the end of the plunger without a mating hole, and has external threads on its outside; A self-locking element is fitted onto the connection between the plug head and the plug rod; The self-locking component has anti-loosening plates that are pre-tightened by compression on the inner wall and outer end face of the threaded hole that mates with the screw plug.

[0005] In the above technical solution, the self-locking component further includes: The connecting piece includes an inclined support portion, an upper connecting portion formed on one side of the support portion and arranged parallel to the plug, and a lower connecting portion formed on the lower side of the support portion and arranged coaxially with the plug. Several anti-loosening strips are evenly distributed around the circumference and integrally formed on the outer side of the upper connecting part; Several anti-loosening tabs are evenly distributed around the circumference and integrally formed on the lower side of the lower connecting part; When the plug is tightened into the threaded hole, the upper anti-loosening plate is pressed and pre-tightened against the outer end face of the threaded hole, and the lower anti-loosening plate is pressed and pre-tightened against the inner wall of the threaded hole; and a mounting groove for the lower anti-loosening plate is formed on the side wall of the plug; and the cross-section of either the upper or lower anti-loosening plate is fan-shaped.

[0006] In the above technical solution, the upper anti-loosening sheet and the lower anti-loosening sheet are further distributed alternately.

[0007] In the above technical solution, the self-locking component is further made of elastic metal.

[0008] In the above technical solution, the upper anti-loosening sheet further includes: The upper receiving piece is connected to the outer edge of the upper connecting part and is set parallel to the end face of the plug. The upper pretension plate has an upward-sloping structure that extends towards the middle of the upper connecting part; The connection between the upper receiving plate and the upper pre-tightening plate is made through a transitional upper arc-shaped section.

[0009] In the above technical solution, the upper anti-loosening sheet further includes: The upper support plate has a downward-sloping structure that extends from the connection between the upward-supporting plate and the upper pre-tightening plate. The upper abutment piece has an inclined structure that is symmetrical to the upper support piece. The upper support piece and the upper abutment piece are connected by an upper bearing part.

[0010] In the above technical solution, the lower anti-loosening sheet further includes: The lower receiving piece is connected to the lower side of the lower connecting part and is coaxially arranged with the plunger; The lower pretensioner has an inclined structure that slopes upwards from bottom to top away from the lower connecting part; The connection between the lower receiving plate and the lower pre-tightening plate is made through a transitional lower arc-shaped section.

[0011] In the above technical solution, the lower anti-loosening sheet further includes: The lower support piece has a downward-sloping structure that extends from the connection between the lower support piece and the lower pre-tightening piece. The lower abutment piece 33e has an inclined structure that is symmetrical to the lower support piece. The lower support piece and the lower abutment piece 33e are connected by a transitional connection through the lower receiving part 33f.

[0012] In the above technical solution, the lower anti-loosening sheet further includes: Several lower clamping portions, each 33g, are formed at equal intervals on the lower pre-tightening plate.

[0013] The beneficial effects of this utility model are as follows: 1. The screw plug's self-locking mechanism ensures a secure, anti-loosening effect after installation. 2. The lower and upper anti-loosening plates on the self-locking component serve a dual locking and anti-loosening function on the end face and inside the threaded hole, respectively. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the self-locking component in this utility model; Figure 3 This is a schematic diagram of the first cross-sectional direction of this utility model; Figure 4 This is a schematic diagram of the second cross-sectional direction of this utility model; The markings in the diagram are as follows: 1-Plug, 2-Plug, 2a-Installation groove, 3-Self-locking component, 31-Connecting piece, 31a-Support part, 31b-Upper connecting part, 31c-Lower connecting part, 32-Upper anti-loosening piece, 32a-Upper receiving piece, 32b-Upper pre-tightening piece, 32c-Upper arc-shaped part, 32d-Upper support piece, 32e-Upper abutting piece, 32f-Upper receiving part, 33-Lower anti-loosening piece, 33a-Lower receiving piece, 33b-Lower pre-tightening piece, 33c-Lower arc-shaped part, 33d-Lower support piece, 33e-Lower abutting piece 33e, 33f-Lower receiving part 33f, 33g-Lower tightening part 33g. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] Example 1: This embodiment provides a self-locking anti-loosening muffler plug, including: The plug 1 is annular in shape, with a regular hexagonal mating hole formed at one end; The plunger 2 is integrally formed at the end of the plunger 1 without a mating hole, and has external threads on its outside. Self-locking component 2b is sleeved at the connection between plug head 1 and plug 2; The self-locking component 2b has an anti-loosening plate and is pre-tightened by compression on the inner wall and outer end face of the threaded hole that mates with the screw plug.

[0017] In this embodiment, the plug 1 is used to abut against the end face of the threaded hole to prevent the plug 2 from being over-screwed in; the plug 2 is used to mate with the threaded hole; and the self-locking member 2b is provided to achieve a good self-locking and anti-loosening effect after the plug is screwed into the threaded hole. The self-locking member 2b also provides good pre-tightening between the end face of the plug and the end face of the threaded hole and between the inner wall of the threaded hole and the plug 2 through the anti-loosening plate, thereby achieving the self-locking and anti-loosening effect.

[0018] Example 2: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0019] The self-locking component 2b includes: The connecting piece 31 includes an inclined support portion 31a, an upper connecting portion 31b formed on one side of the support portion 31a and arranged parallel to the plug head 1, and a lower connecting portion 31c formed on the lower side of the support portion 31a and arranged coaxially with the plug 2. Several anti-loosening strips 32 are evenly distributed around the circumference and integrally formed on the outside of the upper connecting part 31b; Several anti-loosening strips 33 are evenly distributed around the circumference and integrally formed on the lower side of the lower connecting part 31c; When the screw plug is tightened into the threaded hole, the upper anti-loosening plate 32 is pressed and pre-tightened against the outer end face of the threaded hole, and the lower anti-loosening plate 33 is pressed and pre-tightened against the inner wall of the threaded hole; and a placement groove 2a for the lower anti-loosening plate 33 is formed on the side wall of the plug 2; and the cross-section of either the upper anti-loosening plate 32 or the lower anti-loosening plate 33 is fan-shaped.

[0020] In this embodiment, the connecting piece 31 serves as a support, ensuring that the self-locking component 2b is well held at the connection between the plug head 1 and the plug 2. It is connected to the upper anti-loosening piece 32 and the lower anti-loosening piece 33 via the upper connecting part 31b and the lower connecting part 31c, respectively. The upper anti-loosening piece 32 acts as abutment against the end face of the plug head 1 and the threaded hole, preventing the plug from loosening after tightening. The lower anti-loosening piece 33 is located between the plug 2 and the inner wall of the threaded hole, and its limiting fit with the side wall of the plug 2 reduces the rotation of the plug 2 after tightening. The cooperation of the upper and lower anti-loosening pieces 32 and 33 ensures good self-locking and anti-loosening performance of the plug. The placement groove 2a ensures that the self-locking component will not rotate relative to the plug 1, thus guaranteeing a good self-locking and anti-loosening effect.

[0021] Example 3: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0022] The upper anti-loosening sheet 32 ​​and the lower anti-loosening sheet 33 are alternately distributed.

[0023] In this embodiment, the alternating arrangement of the upper anti-loosening piece 32 and the lower anti-loosening piece 33 further ensures the good self-locking and anti-loosening effect of the self-locking piece.

[0024] Example 4: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0025] The self-locking element 2b is made of elastic metal.

[0026] In this embodiment, the self-locking component 2b is made of elastic metal, thereby ensuring a good self-locking and anti-loosening effect; wherein the elastic metal can be spring steel.

[0027] Example 5: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0028] The aforementioned anti-loosening sheet 32 ​​includes: The upper receiving piece 32a is connected to the outer edge of the upper connecting part 31b and is arranged parallel to the end face of the plug 1; The upper pretension plate 32b has an upwardly inclined structure extending towards the middle of the upper connecting part 31b; The connection between the upper receiving piece 32a and the upper pre-tightening piece 32b is achieved through a transitional connection via the upper arc-shaped part 32c.

[0029] In this embodiment, the upper receiving piece 32a connects the upper anti-loosening piece 32 to the upper connecting part 31b. The inclined upper pre-tightening piece 32b is squeezed during the tightening of the screw plug, thus firmly pressing against the end face of the plug head 1 and the threaded hole and accumulating restoring elasticity, thereby achieving the effect of pre-tightening and preventing the screw plug from loosening. The upper arc-shaped transition part can improve the structural stability of the connection between the upper receiving piece 32a and the upper pre-tightening piece 32b.

[0030] Example 6: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0031] The upper anti-loosening sheet 32 ​​further includes: The upper support piece 32d has an inclined structure that extends downward from the connection between the upper support piece 32a and the upper pre-tightening piece 32b. The upper abutment piece 32e has an inclined structure that is symmetrical to the upper support piece 32d. The upper support piece 32d and the upper abutment piece 32e are connected by an upper receiving part 32f.

[0032] In this embodiment, the upper support piece 32d and the upper abutment piece 32e support the upper pretension piece 32b, preventing excessive downward deformation of the upper pretension piece 32b, thereby ensuring that the upper anti-loosening piece 32 can play a good anti-loosening role. The upper receiving part 32f ensures the structural stability of the connection between the upper support piece 32d and the upper abutment piece 32e.

[0033] Example 7: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0034] The lower anti-loosening sheet 33 includes: The lower receiving piece 33a is connected to the lower side of the lower connecting part 31c and is coaxially arranged with the plunger 2; The lower pretensioner 33b has an inclined structure that moves from bottom to top away from the lower connecting part 31c. The lower receiving piece 33a and the lower pre-tightening piece 33b are connected by a transitional connection via the lower arc-shaped part 33c.

[0035] In this embodiment, the lower receiving piece 33a can better connect the lower anti-loosening piece 33 to the lower connecting part 31c. The inclined lower pre-tightening piece 33b is squeezed during the tightening of the bolt, thus firmly pressing against the plug 2 and the threaded hole and accumulating elasticity for reset, thereby preventing the plug 2 from rotating and thus achieving a self-locking and anti-loosening effect. The lower arc-shaped part 33c ensures the structural stability of the connection between the lower receiving piece 33a and the lower pre-tightening piece 33b.

[0036] Example 8: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0037] The lower anti-loosening sheet 33 also includes: The lower support piece 33d has a downwardly inclined structure extending from the connection between the lower support piece 33a and the lower pre-tightening piece 33b. The lower abutment piece 33e has an inclined structure that is symmetrical to the lower support piece 33d. The lower support piece 33d and the lower abutment piece 33e are connected by a transitional connection through the lower receiving part 33f.

[0038] In this embodiment, the lower support piece 33d and the lower abutment piece 33e can support the lower pre-tightening piece 33b, preventing the lower pre-tightening piece 33b from undergoing excessive floating and downward deformation, thereby ensuring that the lower anti-loosening piece 33 can play a good pre-tightening, anti-loosening, and self-locking role in the plug 2 part; while the lower receiving part 33f can ensure the structural stability of the connection between the lower support piece 33d and the lower abutment piece 33e.

[0039] Example 9: This embodiment provides a self-locking anti-loosening muffler plug, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The lower anti-loosening sheet 33 also includes: Several lower clamping portions 33g are formed protrudingly and equidistantly on the lower pre-clamping plate 33b.

[0041] In this embodiment, the protruding lower preload can further improve the effect of the lower preload plate 33b pressing against the threaded hole, thereby achieving a better self-locking and anti-loosening effect. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A self-locking anti-loosening muffler plug, characterized in that, include: The plug (1) is cylindrical in shape and has a regular hexagonal fitting hole at one end; The plug (2) is integrally formed at the end of the plug (1) without a mating hole, and has external threads on its outside; The self-locking part (3) is sleeved on the connection between the plug (1) and the plug (2); The self-locking component (3) has anti-loosening plates and is pre-tightened by extrusion on the inner wall and outer end face of the threaded hole that cooperates with the screw plug.

2. The self-locking anti-loosening muffler plug according to claim 1, characterized in that, The self-locking component (3) includes: The connecting piece (31) includes an inclined support portion (31a), an upper connecting portion (31b) formed on one side of the support portion (31a) and arranged parallel to the plug (1), and a lower connecting portion (31c) formed on the lower side of the support portion (31a) and arranged coaxially with the plug (2). Several upper anti-loosening strips (32) are evenly distributed around the circumference and integrally formed on the outside of the upper connecting part (31b); Several lower anti-loosening pieces (33) are evenly distributed around the circumference and integrally formed on the lower connecting part (31c); When the plug is tightened into the threaded hole, the upper anti-loosening plate (32) is pressed against the outer end face of the threaded hole and pre-tightened, and the lower anti-loosening plate (33) is pressed against the inner wall of the threaded hole and pre-tightened; and a placement groove (2a) for the lower anti-loosening plate (33) is formed on the side wall of the plug (2).

3. The self-locking anti-loosening muffler plug according to claim 2, characterized in that, The upper anti-loosening sheet (32) and the lower anti-loosening sheet (33) are alternately distributed.

4. The self-locking anti-loosening muffler plug according to claim 3, characterized in that, The self-locking element (3) is made of elastic metal.

5. The self-locking anti-loosening muffler plug according to claim 4, characterized in that, The aforementioned anti-loosening sheet (32) includes: The upper receiving piece (32a) is connected to the outer edge of the upper connecting part (31b) and is set parallel to the end face of the plug (1); The upper pretensioner (32b) has an upwardly inclined structure extending towards the middle of the upper connecting part (31b); The connection between the upper receiving piece (32a) and the upper pre-tightening piece (32b) is made by a transitional connection through the upper arc-shaped part (32c).

6. The self-locking anti-loosening muffler plug according to claim 5, characterized in that, The aforementioned anti-loosening sheet (32) also includes: The upper support piece (32d) has a downward inclined structure extending from the connection between the upward supporting piece (32a) and the upper pre-tightening piece (32b); The upper abutment piece (32e) has an inclined structure that is symmetrical to the upper support piece (32d); The upper support piece (32d) and the upper abutment piece (32e) are connected by an upper receiving part (32f).

7. The self-locking anti-loosening muffler plug according to claim 6, characterized in that, The lower anti-loosening sheet (33) includes: The lower receiving piece (33a) is connected to the lower side of the lower connecting part (31c) and is coaxially arranged with the plunger (2); The lower preload plate (33b) has an inclined structure that slopes upward from bottom to top away from the lower connecting part (31c); The lower receiving piece (33a) and the lower pre-tightening piece (33b) are connected by a transitional connection through the lower arc-shaped part (33c).

8. The self-locking anti-loosening muffler plug according to claim 7, characterized in that, The aforementioned anti-loosening sheet (33) also includes: The lower support piece (33d) has a downwardly inclined structure extending from the connection between the lower receiving piece (33a) and the lower pre-tightening piece (33b); The lower abutment piece (33e) has an inclined structure that is symmetrical to the lower support piece (33d); The lower support piece (33d) and the lower abutment piece (33e) are connected by a lower receiving part (33f).

9. A self-locking anti-loosening muffler plug according to claim 8, characterized in that, The lower anti-loosening sheet (33) further includes: a plurality of lower tightening portions (33g) which are formed at equal intervals on the lower pre-tightening sheet (33b).

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