End cover for automobile exhaust and noise reduction

Abstract

The utility model relates to the related technical field of automobile exhaust, in particular to an end cover for automobile exhaust noise reduction, which comprises a noise reduction bag main body, an air outlet pipe is communicated with the side wall of one side of the noise reduction bag main body, an end cover piece is arranged on one side of the air outlet pipe, which is opposite to the noise reduction bag main body, and a plurality of clamping groove blocks are fixedly connected with the outer side wall of the end cover piece. And a clamping groove hole is formed in the clamping groove block. According to the air outlet pipe, the rotating pin is rotated by using the rotating structural part, so that the positions of the clamping plate and the clamping groove hole deviate, then the moving component is used for driving the rotating pin to linearly move in the direction of the central axis of the air outlet pipe, so that the elastic cushion on the clamping plate is attached to the clamping groove block, and in the process, the elastic cushion is tightly attached to the clamping groove block. The fitting tightness degree between the end cover piece and the air outlet pipe is adjusted according to rotation of the rotating threaded ring, and the position relation of the rotating pin can be freely adjusted.

Description

Technical Field

[0001] The utility model relates to an end cover, in particular to an end cover for automobile exhaust silencer, and belongs to the technical field related to automobile exhaust. Background Art

[0002] The end cap for automobile exhaust silencer usually refers to the cover installed at the end of the exhaust pipe to reduce exhaust noise and improve exhaust airflow. Its main function is to absorb and reduce the amplitude of exhaust sound waves through internal sound-absorbing materials or structural designs, thereby reducing noise levels. Some common designs can reduce noise through different mechanisms. In addition, the material of the end cap also affects its durability and corrosion resistance. When the end cap is damaged, it should be replaced immediately to ensure the effect of automobile exhaust silencer.

[0003] According to a Chinese patent document with the announcement number CN216741700U, an end cover connection mechanism of an automobile exhaust muffler package is disclosed, which includes a muffler package body, an air outlet pipe is provided at one end of the muffler package body, a pipe cover is installed at the end of the air outlet pipe, and evenly distributed protrusions are welded on the pipe cover. A positioning mechanism for guiding the pipe cover is provided on the pipe body of the air outlet pipe, and the positioning mechanism includes an inner ring slidably connected to the air outlet pipe. An outer ring is fixed to the outer side of the inner ring, and evenly distributed positioning guide rods are fixed to the outer ring. The positioning guide rods are slidably connected to the corresponding protrusions, and two movable blocks are provided on the positioning guide rods. Two symmetrically arranged card seats are fixed on the side wall of the outer ring.

[0004] Based on the search of the above patents and in combination with the equipment in the prior art, it is found that when the above equipment is used, when it is necessary to fix the tube cover, the movable stopper is opened to the outside by moving the sliding sleeve, and then the protrusion on the tube cover contacts the movable stopper, and then the outer ring is limited, so that the fixing mechanism clamps and fixes the entire tube cover. However, the tank cover is mainly fixed by clamping between the movable stopper and the air outlet pipe, and the movable stopper and the protrusion on the tube cover are in fixed positions when in use, and the fixed clamp for fixing the outer ring is also in a fixed position. Therefore, if there is a deviation in the welding size of the movable stopper and the protrusion, it will cause a deviation in the clamping size between the tube cover and the air outlet pipe, thereby affecting the sealing. In this process, the size requirements are relatively strict, which reduces the versatility and is not convenient enough.

[0005] Therefore, it is urgent to improve the end cover for automobile exhaust silencer to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide an end cover for automobile exhaust silencer, which is to rotate the rotating pin by using a rotating structural part, thereby causing the position of the clamping plate and the clamping slot hole to shift, and then use a moving component to drive the rotating pin to move linearly along the direction of the central axis of the exhaust pipe, thereby causing the elastic pad on the clamping plate to fit and fit tightly with the clamping slot block, and in this process, according to the rotation of the rotating thread ring, the fit tightness between the end cover and the exhaust pipe is adjusted, wherein the position relationship of the rotating pin can be freely adjusted, thereby ensuring that even if the front and rear position dimensions of the clamping slot hole change, it will not affect the fixation of the end cover, and will not affect the airtightness between the end cover and the exhaust pipe, thereby improving the versatility of the device, and making it convenient and easy to operate.

[0007] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model includes: comprising a silencer package body, a side wall of one side of the silencer package body is connected with an air outlet pipe, an end cover is provided on the side of the air outlet pipe away from the silencer package body, a plurality of clamping groove blocks are fixedly connected to the outer wall of the end cover, a clamping groove hole is opened on the clamping groove block, and a sealing ring is fixedly connected to the side wall of one side of the end cover;

[0008] A sliding ring is slidably connected to the outer wall of the air outlet pipe, and a rotating structure is provided on the sliding ring. A plurality of rotating pins are connected to the rotating structure. The rotating structure is used to rotate the rotating pin. A clamping plate is fixedly connected to one end of the rotating pin. The rotating pin is movably connected to the clamping slot. A fixed threaded ring is fixedly connected to the outer wall of the air outlet pipe, and a moving component for moving the sliding ring is provided on the fixed threaded ring.

[0009] Preferably, the rotating structural member includes a gear ring, a vertical connecting ring and a rotating ring, the gear ring is rotatably connected to the outer wall of the sliding ring, a plurality of connecting short rods are fixedly connected to one side wall of the gear ring, the vertical connecting ring is fixedly connected to one end of the connecting short rod away from the gear ring, and the rotating ring is fixedly connected to the outer wall of the vertical connecting ring.

[0010] Preferably, the rotating pin is provided with a gear portion, and the gear portion is meshed with the gear ring, and a plurality of rotating blocks are fixedly connected to the outer side wall of the sliding ring, and the rotating pin is rotatably connected to the rotating blocks.

[0011] Preferably, the rotating pin is located inside the rotating circle, and the center line of the rotating circle is colinear with the center line of the gear ring. The clamping plate is located on the end of the rotating pin away from the gear part, and the size of the clamping plate corresponds to the size of the clamping slot.

[0012] Preferably, the movable assembly includes a rotating thread ring and a clamping movable plate, the rotating thread ring is threadedly connected to the fixed thread ring, an annular protrusion is provided on the side wall of one side of the rotating thread ring, and one end of the clamping movable plate is movably clamped on the annular protrusion.

[0013] Preferably, a second annular protrusion is fixedly connected to a side wall of the sliding ring close to the fixed threaded ring, and the other end of the clamping movable plate is fixedly connected to the second annular protrusion.

[0014] Preferably, an elastic pad is fixedly connected to a side wall of the clamping plate close to the rotating pin.

[0015] The utility model has at least the following beneficial effects:

[0016] 1. The rotating pin is rotated by using a rotating structural member, so that the position of the clamping plate and the clamping slot hole is offset, and then the moving assembly is used to drive the rotating pin to move linearly along the direction of the central axis of the air outlet pipe, so that the elastic pad on the clamping plate and the clamping slot block are fitted and tightly attached. In this process, the tightness of the fit between the end cover and the air outlet pipe is adjusted according to the rotation of the rotating thread ring, wherein the position relationship of the rotating pin can be freely adjusted, thereby ensuring that even if the front and rear position dimensions of the clamping slot hole change, it does not affect the fixation of the end cover, and also does not affect the airtightness between the end cover and the air outlet pipe, thereby improving the versatility of the device and making it convenient and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 An isometric structural schematic diagram provided for the utility model;

[0019] Figure 2 Partial structure diagram provided for the utility model Figure 1 ;

[0020] Figure 3 Schematic diagram of partial structure explosion provided by the utility model Figure 1 ;

[0021] Figure 4 Schematic diagram of partial structure explosion provided by the utility model Figure 2 ;

[0022] Figure 5 Partial structure diagram provided for the utility model Figure 2 .

[0023] In the figure, 1. silencer package body; 2. air outlet pipe; 3. end cover; 4. snap-in groove block; 5. snap-in groove hole; 6. sealing ring; 7. sliding ring; 701. rotating block; 702. annular protrusion 2; 8. rotating structural member; 801. gear ring; 802. vertical connecting ring; 803. rotating ring; 9. rotating pin; 901. gear part; 10. snap-in plate; 11. fixed threaded ring; 12. moving assembly; 1201. rotating threaded ring; 1202. snap-in moving plate; 121. annular protrusion 1; 13. connecting short rod; 14. elastic pad. DETAILED DESCRIPTION

[0024] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] like Figure 1-Figure 5 As shown, the end cap for automobile exhaust silencer provided in this embodiment comprises a silencer package body 1, a side wall of one side of the silencer package body 1 is connected with an air outlet pipe 2, an end cap 3 is provided on the side of the air outlet pipe 2 away from the silencer package body 1, a plurality of clamping groove blocks 4 are fixedly connected to the outer wall of the end cap 3, a clamping groove hole 5 is provided on the clamping groove block 4, a sealing ring 6 is fixedly connected to the side wall of one side of the end cap 3, the sealing ring 6 is convenient for limiting the position of the end cap 3 when the end cap 3 is connected to the air outlet pipe 2, and after the end cap 3 and the air outlet pipe 2 are connected, the sealing ring 6 can cover the connection position of the two and play a sealing role;

[0026] A sliding ring 7 is slidably connected to the outer wall of the air outlet pipe 2, and a rotating structure 8 is provided on the sliding ring 7. A plurality of rotating pins 9 are connected to the rotating structure 8. The rotating structure 8 is used to rotate the rotating pin 9. A clamping plate 10 is fixedly connected to one end of the rotating pin 9. An elastic pad 14 is fixedly connected to the side wall of the clamping plate 10 close to the rotating pin 9. The rotating pin 9 is movably connected to the clamping slot 5. A fixed threaded ring 11 is fixedly connected to the outer wall of the air outlet pipe 2. A moving component 12 for moving the sliding ring 7 is provided on the fixed threaded ring 11. First, the end cover 3 is placed at a position corresponding to the air outlet pipe 2, and then the end cover 3 is moved toward the air outlet pipe 2, thereby driving the clamping slot block 4 to move. During the movement, the clamping plate 10 and the rotating pin 9 both pass through the clamping slot 5, and when the clamping plate 10 passes through the clamping slot 5, the position of the clamping plate 10 corresponds to the position of the clamping slot 5. When the clamping plate 10 is located on the side of the clamping slot block 4 away from the sliding ring 7, and the sealing ring 6 is engaged with the side wall of the outlet pipe 2, the rotating pin 9 is then rotated using the rotating structural member 8, thereby causing the position of the clamping plate 10 and the clamping slot 5 to shift, and then the moving component 12 is used to drive the rotating pin 9 to move linearly along the direction of the central axis of the outlet pipe 2, thereby causing the elastic pad 14 on the clamping plate 10 to fit and fit tightly with the clamping slot block 4. At this time, the end cover 3 is fixed on the port of the outlet pipe 2.

[0027] Among them, Figure 3 , Figure 4 as well as Figure 5As shown, the rotating structural member 8 includes a gear ring 801, a vertical connecting ring 802 and a rotating ring 803. The gear ring 801 is rotatably connected to the outer side wall of the sliding ring 7. A plurality of connecting short rods 13 are fixedly connected to one side wall of the gear ring 801. The vertical connecting ring 802 is fixedly connected to one end of the connecting short rod 13 away from the gear ring 801. The rotating ring 803 is fixedly connected to the outer side wall of the vertical connecting ring 802. A gear portion 901 is provided on the rotating pin 9, and the gear portion 901 is meshed with the gear ring 801. A plurality of rotating blocks 701 are fixedly connected to the outer side wall of the sliding ring 7. The rotating pin 9 is rotatably connected to the rotating block 701. The rotating pin 9 is located inside the rotating ring 803, and the center line of the rotating ring 803 is colinear with the center line of the gear ring 801. The clamping plate 10 is located at the rotating pin 9 away from the gear portion On one end of 901, the size of the clamping plate 10 corresponds to the size of the clamping slot 5, that is, when the clamping plate 10 corresponds to the position of the clamping slot 5, the clamping plate 10 can pass through the clamping slot 5. Because the length and width of the clamping plate 10 are not equal, the clamping plate 10 will not be able to freely pass through the clamping slot 5 after passing through the clamping slot 5 and then rotate, and then be clamped at the position on one side of the clamping slot block 4, which also ensures that the size between the two is maintained, the clamping plate 10 can pass through the clamping slot 5 and can be clamped on the clamping slot block 4 when rotating. When the rotating structural member 8 is in use, the rotating circle 803 is rotated, and then the gear ring 801 is driven to rotate through the vertical connecting ring 802, and then the rotating pin 9 is driven to rotate through the gear part 901 on the rotating pin 9, thereby driving the clamping plate 10 to rotate.

[0028] Further, such as Figure 3 , Figure 4 as well as Figure 5 As shown, the moving assembly 12 includes a rotating thread ring 1201 and a clamping moving plate 1202, the rotating thread ring 1201 is threadedly connected to the fixed thread ring 11, a ring-shaped protrusion 121 is provided on one side wall of the rotating thread ring 1201, one end of the clamping moving plate 1202 is movably clamped on the ring-shaped protrusion 121, the clamping moving plate 1202 is clamped on the ring-shaped protrusion 121 and is not fixed, a ring-shaped protrusion 2 702 is fixedly connected on the side wall of the sliding ring 7 close to the fixed thread ring 11, and the other end of the clamping moving plate 1202 is clamped on the ring-shaped protrusion 121. The second protrusion 702 is fixedly connected, and the rotating thread ring 1201 is rotated to make the rotating thread ring 1201 move on the fixed thread ring 11, and while moving, the sliding ring 7 is pulled to slide on the outlet pipe 2 through the clamping moving plate 1202, and then the elastic pad 14 on the clamping plate 10 is pulled together with the side wall of the clamping groove block 4 through the rotating pin 9, and finally the end cover 3 is fitted on the port of the outlet pipe 2, and as the rotating thread ring 1201 rotates, the tightness of the fit between the end cover 3 and the outlet pipe 2 can be adjusted.

[0029] like Figure 1-Figure 5As shown, the principle of the automobile exhaust silencer end cover provided in this embodiment is as follows: when in use, first place the end cover member 3 at a position corresponding to the outlet pipe 2, then move the end cover member 3 toward the outlet pipe 2, thereby driving the clamping slot block 4 to move, and during the movement, the clamping plate 10 and the rotating pin 9 both pass through the clamping slot hole 5, and when the clamping plate 10 passes through the clamping slot hole 5, the position of the clamping plate 10 corresponds to the position of the clamping slot hole 5, when the clamping plate 10 is located on the side of the clamping slot block 4 away from the sliding ring 7, and the sealing ring 6 is engaged with the side wall of the outlet pipe 2, then rotate the rotating ring 803, thereby driving the gear ring 801 through the vertical connecting ring 802. The gear part 901 on the rotating pin 9 drives the rotating pin 9 to rotate, and then drives the clamping plate 10 to rotate. At this time, the relative position between the clamping plate 10 and the clamping slot 5 is offset, that is, the clamping plate 10 cannot pass through the clamping slot 5. Then, the rotating thread ring 1201 is rotated to make the rotating thread ring 1201 move on the fixed thread ring 11, and while moving, the sliding ring 7 is pulled to slide on the air outlet pipe 2 through the clamping moving plate 1202, and then the elastic pad 14 on the clamping plate 10 is pulled by the rotating pin 9 to fit together with the side wall of the clamping slot block 4, and finally the end cover 3 is fit and fixed on the air outlet pipe 2.

[0030] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0031] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0032] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An end cap for automobile exhaust silencing, comprising a silencing package body (1), characterized in that: An air outlet pipe (2) is connected to a side wall of one side of the sound-absorbing package body (1); an end cover (3) is provided on a side of the air outlet pipe (2) away from the sound-absorbing package body (1); a plurality of clamping groove blocks (4) are fixedly connected to an outer side wall of the end cover (3); a clamping groove hole (5) is provided on the clamping groove block (4); and a sealing ring (6) is fixedly connected to a side wall of one side of the end cover (3); A sliding ring (7) is slidably connected to the outer wall of the air outlet pipe (2), and a rotating structure (8) is provided on the sliding ring (7). The rotating structure (8) is connected to a plurality of rotating pins (9), and the rotating structure (8) is used to rotate the rotating pin (9). A clamping plate (10) is fixedly connected to one end of the rotating pin (9), and the rotating pin (9) is movably connected to the clamping slot (5). A fixed threaded ring (11) is fixedly connected to the outer wall of the air outlet pipe (2), and a moving component (12) for moving the sliding ring (7) is provided on the fixed threaded ring (11).

2. The end cap for automobile exhaust silencer according to claim 1, characterized in that: The rotating structural member (8) comprises a gear ring (801), a vertical connecting ring (802) and a rotating ring (803); the gear ring (801) is rotatably connected to the outer side wall of the sliding ring (7); a plurality of connecting short rods (13) are fixedly connected to one side wall of the gear ring (801); the vertical connecting ring (802) is fixedly connected to one end of the connecting short rod (13) away from the gear ring (801); and the rotating ring (803) is fixedly connected to the outer side wall of the vertical connecting ring (802).

3. The end cap for automobile exhaust silencer according to claim 2, characterized in that: The rotating pin (9) is provided with a gear portion (901), and the gear portion (901) is meshed with the gear ring (801). A plurality of rotating blocks (701) are fixedly connected to the outer wall of the sliding ring (7), and the rotating pin (9) is rotatably connected to the rotating blocks (701).

4. The end cap for automobile exhaust silencer according to claim 3, characterized in that: The rotating pin (9) is located inside the rotating circle (803), and the center line of the rotating circle (803) is colinear with the center line of the gear ring (801). The clamping plate (10) is located on the end of the rotating pin (9) away from the gear part (901), and the size of the clamping plate (10) corresponds to the size of the clamping slot hole (5).

5. The end cap for automobile exhaust silencer according to claim 1, characterized in that: The moving assembly (12) comprises a rotating thread ring (1201) and a clamping moving plate (1202); the rotating thread ring (1201) is threadedly connected to the fixed thread ring (11); a side wall of the rotating thread ring (1201) is provided with an annular protrusion (121); one end of the clamping moving plate (1202) is movably clamped on the annular protrusion (121).

6. The end cap for automobile exhaust silencer according to claim 5, characterized in that: A second annular protrusion (702) is fixedly connected to a side wall of the sliding ring (7) close to the fixed threaded ring (11), and the other end of the clamping movable plate (1202) is fixedly connected to the second annular protrusion (702).

7. The end cap for automobile exhaust silencer according to claim 1, characterized in that: An elastic pad (14) is fixedly connected to a side wall of the clamping plate (10) close to the rotating pin (9).

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