Mounting hanger for a vehicle exhaust pipe silencer

Abstract

The utility model discloses a kind of installation hangers of automobile exhaust pipe silencer, the utility model relates to the technical field of automobile parts production, the utility model, comprising: derrick, the top of the derrick is fixed with the outer wall of car by bolt, the bottom of the derrick is fixedly connected with fixing device;By setting the cooperation of fixing device and locking device, modified polyether ether ketone is used in fixing device inner ring and polyphenylene sulfide mixture, high temperature resistance, anti-aging, inner wall wave point circumferential array arrangement, increase and exhaust pipe friction, avoid deviation;Locking device realizes automatic locking by elastic locking frame, compression spring etc., prevent assembly loose, avoid exhaust pipe drop risk, inner ring mixed material temperature resistance is high, anti-aging, locking component fatigue resistance, reduce hanger replacement frequency, reduce maintenance cost and downtime, installation unlock is convenient, locking device is automatically engaged and fixed during installation, when maintaining, it can be quickly unlocked through unlocking slot, the purpose of substantially shortening installation and dismounting time.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to a mounting bracket for an automotive exhaust pipe muffler. Background Technology

[0002] In automotive exhaust systems, the exhaust muffler mounting bracket is a key component connecting the exhaust system to the vehicle body. Its core functions are to fix the position of the exhaust muffler, isolate vibration, and compensate for thermal displacement, directly affecting vehicle driving safety, comfort, and the lifespan of the exhaust system.

[0003] The existing hanger's bonding and cushioning components mostly rely on traditional nitrile rubber and ordinary engineering plastics. Nitrile rubber is prone to accelerated aging and failure, while ordinary engineering plastics, although slightly more temperature resistant, have weak anti-aging and anti-oil properties. Long-term use can easily lead to material embrittlement and wear. In addition, some hanger locking or support components are made of ordinary steel without fatigue resistance design. Under long-term vibration, rigid friction can easily cause wear of the components, further shortening the overall failure cycle of the hanger and requiring frequent replacement of the hanger. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a mounting bracket for an automotive exhaust pipe muffler, which solves the problems of service life, assembly efficiency, and vibration isolation.

[0006] (II) Technical Solution

[0007] To solve the above problems, this utility model achieves the following technical solution: a mounting bracket for an automotive exhaust pipe muffler, comprising: a rod, the top end of which is fixed to the outer wall of the vehicle by bolts, a fixing device fixedly connected to the bottom end of the rod, and a locking device slidably connected to the inner wall of the fixing device, the locking device using elasticity for locking and fixing, the fixing device including an outer ring, an inner ring bonded to the inner wall of the outer ring, the inner ring being made of a mixture of modified polyether ether ketone and polyphenylene sulfide, the inner wall of the inner ring being fixedly connected with polka dots, the inner ring in the fixing device using a mixture of modified polyether ether ketone and polyphenylene sulfide, this material has both high rigidity and excellent high temperature resistance and anti-aging properties, combined with the polka dot design of the inner wall circumferentially arranged, can greatly increase the contact friction between the inner ring and the outer wall of the exhaust pipe, effectively avoiding axial sliding or radial displacement of the exhaust pipe caused by vehicle bumps and vibrations.

[0008] Preferably, the outer wall of the outer ring is fixedly connected to the bottom end of the rod, and the outer wall of the polka dots is arranged in a circumferential array along the central axis of the inner ring.

[0009] Preferably, the locking device includes a locking rod, the inner wall of which is slidably connected to an elastic locking frame via a slot, and the outer wall of which is fixedly connected to a limit frame. The locking device, through the sliding engagement of the elastic locking frame and the locking rod via the slot, combined with the compression spring driving the slide rod to elastically press against the limit frame, can automatically lock the assembly position of the fixing device and the exhaust pipe, preventing loosening of the assembly due to vibration during long-term use, and completely avoiding the safety hazard of the exhaust pipe falling off.

[0010] Preferably, the outer wall of the locking rod is rotatably connected to the inner wall of the outer ring, the inner wall of the locking rod is slidably connected to the inner wall of the outer ring, the slots are symmetrically opened on the inner wall of the locking rod, and the top end of the elastic locking frame is fixedly connected to the outer wall of the outer ring. The elastic locking frame, compression spring and other components are all made of fatigue-resistant metal materials. With the sliding guide structure of the slide rod and the limiting cylinder, the wear of components caused by rigid friction is avoided, and the failure cycle of the overall hanger is further extended.

[0011] Preferably, a slide rod is slidably connected to the inner wall of the limiting frame, a compression spring is fixedly connected to the end of the slide rod away from the limiting frame, a limiting cylinder is fixedly connected to the end of the compression spring away from the slide rod, and the top end of the limiting cylinder is fixedly connected to the outer wall of the outer ring.

[0012] Preferably, the top of the locking rod is provided with an unlocking groove. When repairing or replacing the exhaust pipe, external force can be applied through the unlocking groove at the top of the locking rod to rotate the locking rod and release it from the constraint of the elastic locking frame, thereby achieving quick unlocking.

[0013] Beneficial effects

[0014] This utility model provides a mounting bracket for an automotive exhaust pipe muffler. It has the following advantages: This utility model, through the combination of a fixing device and a locking device, features an inner ring made of a mixture of modified polyetheretherketone and polyphenylene sulfide, which is heat-resistant and anti-aging. The inner wall has a circumferential array of polka dots to increase friction with the exhaust pipe and prevent displacement. The locking device achieves automatic locking through an elastic locking frame and compression spring, preventing loose assembly and avoiding the risk of exhaust pipe falling off. The mixed material of the inner ring is heat-resistant and anti-aging, and the locking components are fatigue-resistant, reducing the number of hanger replacements, lowering maintenance costs and downtime. Installation and unlocking are convenient. During installation, the locking device automatically engages and is fixed, and during maintenance, it can be quickly unlocked through the unlocking slot, significantly shortening the assembly and disassembly time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This utility model Figure 2Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the structure of the elastic locking frame of this utility model.

[0016] In the diagram: 1. Hanging rod; 2. Fixing device; 20. Outer ring; 21. Inner ring; 22. Dotted pattern; 3. Locking device; 30. Locking rod; 31. Elastic locking frame; 32. Limiting frame; 33. Slide rod; 34. Compression spring; 35. Limiting cylinder; 36. Unlocking groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example

[0019] Please see Figure 1-5 This utility model provides a technical solution: a mounting bracket for an automotive exhaust pipe muffler, comprising: The top of the hanger 1 is fixed to the outer wall of the car by bolts. The bottom of the hanger 1 is fixedly connected to the fixing device 2. The inner wall of the fixing device 2 is slidably connected to the locking device 3. The locking device 3 uses elasticity to lock and fix. The top of the hanger 1 is fixed to the outer wall of the car by bolts to form the overall support base of the hanger. Its bottom is rigidly connected to the outer wall of the outer ring 20 of the fixing device 2 to transfer the weight of the exhaust pipe to the car body and ensure the overall position of the hanger is stable. The fixing device 2 includes an outer ring 20, and an inner ring 21 is bonded to the inner wall of the outer ring 20. The inner ring 21 is made of a mixture of modified polyether ether ketone and polyphenylene sulfide. The inner wall of the inner ring 21 is fixedly connected with polka dots 22. The outer wall of the outer ring 20 is fixedly connected to the bottom end of the hanger 1. The outer wall of the polka dots 22 is arranged in a circumferential array along the central axis of the inner ring 21. The outer ring 20 is a rigid support frame. The inner ring 21 bonded to the inner wall is made of a mixture of modified polyether ether ketone and polyphenylene sulfide. This material has both high rigidity and high temperature resistance and anti-aging properties. It can withstand the radial pressure of the exhaust pipe and resist the long-term high temperature and oil stain corrosion of the exhaust system. At the same time, the polka dots 22 arranged in a circumferential array on the inner wall of the inner ring 21 can increase the contact friction with the outer wall of the exhaust pipe, and prevent the exhaust pipe from sliding axially or shifting radially when the vehicle bumps or vibrates, thus providing initial stable constraint for the exhaust pipe.

[0020] The locking device 3 includes a locking rod 30. An elastic locking frame 31 is slidably connected to the inner wall of the locking rod 30 via a slot. A limit frame 32 is fixedly connected to the outer wall of the elastic locking frame 31. The outer wall of the locking rod 30 is rotatably connected to the inner wall of the outer ring 20, and the inner wall of the locking rod 30 is slidably connected to the inner wall of the outer ring 20. Slots are symmetrically formed on the inner wall of the locking rod 30. The top end of the elastic locking frame 31 is fixedly connected to the outer wall of the outer ring 20. An unlocking groove 36 is formed at the top end of the locking rod 30. First, the operator inserts the exhaust pipe into the inner ring 21 and then slides the locking rod 30 along the inner wall of the outer ring 20. At this time, the locking device is activated. The symmetrical slots on the inner wall of the rod 30 form a sliding fit with the elastic locking frame 31. When the exhaust pipe needs to be repaired or replaced, an external tool is inserted into the unlocking slot 36, and a rotational force is applied to drive the locking rod 30 to rotate along the inner wall of the outer ring 20. During the rotation, the slots on the inner wall of the locking rod 30 and the elastic locking frame 31 gradually disengage from the locking state, thus getting rid of the limiting constraint of the elastic locking frame 31. Then, the external tool is pulled upward, which drives the locking rod 30 to slide upward along the inner wall of the outer ring 20, releasing the locking device 3 from fixing the exhaust pipe. At this time, the exhaust pipe can be taken out from the inner ring 21, completing the unlocking and disassembly operation. A sliding rod 33 is slidably connected to the inner wall of the limiting frame 32. A compression spring 34 is fixedly connected to the end of the sliding rod 33 away from the limiting frame 32. A limiting cylinder 35 is fixedly connected to the end of the compression spring 34 away from the sliding rod 33. The top of the limiting cylinder 35 is fixedly connected to the outer wall of the outer ring 20. Under the natural elastic force of the compression spring 34, the sliding rod 33 pushes along the inner wall of the limiting cylinder 35 toward the limiting frame 32, causing the elastic locking frame 31 to be tightly inserted into the slot of the locking rod 30, forming a rigid limit, restricting the lateral displacement of the locking rod 30, and finally realizing the automatic locking of the assembly position of the fixing device 2 and the exhaust pipe, preventing the assembly from loosening due to long-term vibration.

[0021] When in use, the top of the hanger 1 is fixed to the outer wall of the car with bolts to form the overall support base of the hanger. Its bottom end is rigidly connected to the outer wall of the outer ring 20 of the fixing device 2 to transfer the weight of the exhaust pipe to the car body and ensure the overall position of the hanger is stable.

[0022] First, the staff inserts the exhaust pipe into the inner ring 21 and slides the locking rod 30 along the inner wall of the outer ring 20. At this time, the symmetrical slots on the inner wall of the locking rod 30 form a sliding fit with the elastic locking frame 31. Under the natural elastic force of the compression spring 34, the sliding rod 33 pushes along the inner wall of the limiting cylinder 35 towards the limiting frame 32, causing the elastic locking frame 31 to be tightly inserted into the slot of the locking rod 30, forming a rigid limit, restricting the lateral displacement of the locking rod 30, and finally realizing the automatic locking of the mounting position of the fixing device 2 and the exhaust pipe, preventing the assembly from loosening due to long-term vibration. Among them, the outer ring 20 is a rigid support frame, and the inner ring 21 bonded to the inner wall is made of a mixture of modified polyether ether ketone and polyphenylene sulfide. This material has both high rigidity and high temperature resistance and anti-aging properties. It can withstand the radial pressure of the exhaust pipe and resist the long-term high temperature and oil stain corrosion of the exhaust system. At the same time, the circumferential array of the dot 22 on the inner wall of the inner ring 21 can increase the contact friction with the outer wall of the exhaust pipe, and prevent the exhaust pipe from sliding axially or shifting radially when the vehicle bumps or vibrates, thus providing initial stable constraint for the exhaust pipe. When the exhaust pipe needs to be repaired or replaced, insert an external tool into the unlocking slot 36 and apply a rotational force to drive the locking rod 30 to rotate along the inner wall of the outer ring 20. During the rotation, the slot on the inner wall of the locking rod 30 gradually disengages from the elastic locking frame 31, freeing it from the limiting constraint of the elastic locking frame 31. Then, pull the external tool upward to drive the locking rod 30 to slide upward along the inner wall of the outer ring 20, releasing the locking device 3 from fixing the exhaust pipe. At this time, the exhaust pipe can be removed from the inner ring 21, completing the unlocking and disassembly operation.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mounting bracket for an automotive exhaust muffler, comprising: The boom (1) is characterized by: The top end of the boom (1) is fixed to the outer wall of the car by bolts, and the bottom end of the boom (1) is fixedly connected to a fixing device (2). The inner wall of the fixing device (2) is slidably connected to a locking device (3), which uses elasticity to lock and fix. The fixing device (2) includes an outer ring (20), an inner ring (21) is bonded to the inner wall of the outer ring (20), and polka dots (22) are fixedly connected to the inner wall of the inner ring (21).

2. The mounting bracket for an automotive exhaust pipe muffler according to claim 1, characterized in that: The outer wall of the outer ring (20) is fixedly connected to the bottom end of the rod (1), and the outer wall of the polka dot (22) is arranged in a circular array along the central axis of the inner ring (21).

3. The mounting bracket for an automotive exhaust pipe muffler according to claim 1, characterized in that: The locking device (3) includes a locking rod (30), the inner wall of the locking rod (30) is slidably connected to an elastic locking frame (31) through a slot, and the outer wall of the elastic locking frame (31) is fixedly connected to a limit frame (32).

4. The mounting bracket for an automotive exhaust pipe muffler according to claim 3, characterized in that: The outer wall of the locking rod (30) is rotatably connected to the inner wall of the outer ring (20), the inner wall of the locking rod (30) is slidably connected to the inner wall of the outer ring (20), the slots are symmetrically opened on the inner wall of the locking rod (30), and the top of the elastic locking frame (31) is fixedly connected to the outer wall of the outer ring (20).

5. The mounting bracket for an automotive exhaust pipe muffler according to claim 3, characterized in that: The inner wall of the limiting frame (32) is slidably connected to a slide rod (33), and a compression spring (34) is fixedly connected to one end of the slide rod (33) away from the limiting frame (32). A limiting cylinder (35) is fixedly connected to one end of the compression spring (34) away from the slide rod (33), and the top end of the limiting cylinder (35) is fixedly connected to the outer wall of the outer ring (20).

6. The mounting bracket for an automotive exhaust pipe muffler according to claim 3, characterized in that: The top of the locking rod (30) is provided with an unlocking groove (36).

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