Device for reducing abnormal sound of spare tire fixing mechanism

Abstract

The utility model discloses a device for reducing abnormal sound of a spare tire fixing mechanism. The device comprises a rocker fixing support, a spare tire rocker support, a spare tire rocker rod, a ratchet mechanism fixing support and a ratchet mechanism. One end of the spare tire rocker arm rod penetrates through the spare tire rocker arm support to be rotationally connected with the rocker arm fixing support, the rocker arm fixing support is fixed to one side of a passenger car chassis, and the rocker arm fixing support is connected with the spare tire rocker arm support through a bolt. A rocker fixing cushion block is arranged between the spare tire rocker support and the rocker fixing support. The connecting end of the spare tire rocker arm rod and the ratchet mechanism fixing support is wrapped with a thermoplastic pipe. The rocker fixing cushion block is additionally arranged on a common spare tire fixing mechanism, and the spare tire rocker rod is processed to be wrapped by a layer of thermoplastic pipe, so that normal mounting and dismounting of the spare tire are guaranteed, abnormal sound generated by shaking of the spare tire rocker rod in the running process of a passenger car is reduced, and the service life of the passenger car is prolonged. And the comfort of the riding environment of a driver and passengers is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spare tire fixing of passenger cars, in particular to a device for reducing abnormal noise of a spare tire fixing mechanism. Background Art

[0002] At present, the common spare tire fixing mechanism for buses is to rotate the spare tire rocker arm to drive the ratchet mechanism to rotate and then drive the spare tire to be loaded and unloaded. A certain gap must be ensured between the spare tire rocker arm and its fixing device due to its rotation. Due to the shortcomings of its manufacturing process, it is difficult to ensure its processing accuracy, resulting in a large gap between the spare tire rocker arm and its fixing device. Abnormal noise is easily generated during the driving of the bus, which seriously affects the riding environment of the driver and passengers. Therefore, a solution with simpler structure and better reliability that can reduce such abnormal noise is urgently needed. Utility Model Content

[0003] The purpose of the utility model is to provide a device for reducing the abnormal noise of a spare tire fixing mechanism in response to actual needs. By adding a rocker fixing pad to a common spare tire fixing mechanism and processing the spare tire rocker arm so that it is wrapped with a layer of thermoplastic tube, the abnormal noise generated by the shaking of the spare tire rocker arm during the driving of the bus is reduced, and the riding comfort of the driver and passengers is effectively improved.

[0004] A device for reducing abnormal noise of a spare tire fixing mechanism comprises a rocker fixing bracket, a spare tire rocker support, a spare tire rocker arm, a ratchet mechanism fixing bracket and a ratchet mechanism; one end of the spare tire rocker arm passes through the spare tire rocker support and is rotatably connected to the rocker fixing bracket, the rocker fixing bracket is fixed to one side of a bus chassis, and the rocker fixing bracket and the spare tire rocker support are connected by bolts; the other end of the spare tire rocker arm is installed and connected to one end of the ratchet mechanism fixing bracket, the other end of the ratchet mechanism fixing bracket is connected to a ratchet mechanism, a chain is installed on the ratchet mechanism, one end of the chain is installed and connected to the ratchet mechanism, and the other end passes through the spare tire fixing mechanism and then returns and is fixed to the middle part of the bus chassis.

[0005] A rocker fixing pad is provided between the spare tire rocker support and the rocker fixing bracket. The rocker fixing pad is squeezed during the installation process to expand it, so that the diameter of the installation hole on the rocker fixing pad is reduced, so as to achieve an interference fit between the rocker fixing pad and the spare tire rocker arm, thereby reducing the shaking of the spare tire rocker arm during the driving of the bus.

[0006] The connecting end of the spare tire rocker arm and the ratchet mechanism fixing bracket is wrapped with a thermoplastic tube. The thermoplastic tube is used as a buffer to reduce abnormal noise caused by shaking between the spare tire rocker arm and the ratchet mechanism fixing bracket.

[0007] The rocker fixing pad is made of rubber, and the thickness of the rocker fixing pad is 6 mm. The rubber rocker fixing pad and the thermoplastic tube can reduce the relative shaking between the spare tire rocker arm and its connecting structure while keeping the spare tire rocker arm rotatable due to the plasticity and cushioning properties of rubber, thereby reducing the abnormal noise caused by the shaking of the spare tire rocker arm.

[0008] The bolt is a hexagonal flange bolt, and the bolt is equipped with a double nut for installation and fixing.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model arranges a rocker fixing pad between the spare tire rocker support and the rocker fixing bracket, and expands the rocker fixing pad by squeezing it during the installation process, thereby reducing the diameter of the installation hole on the rocker fixing pad, so as to achieve an interference fit between the rocker fixing pad and the spare tire rocker arm, eliminates the problem of too large a manufacturing gap between the spare tire rocker support and the spare tire rocker arm, reduces the shaking of the spare tire rocker arm during the driving of the bus, and further reduces the abnormal noise caused by the shaking of the spare tire rocker arm.

[0011] The utility model wraps a thermoplastic tube around the connection end of the spare tire rocker arm and the ratchet mechanism fixing bracket, and utilizes the buffering effect of the thermoplastic tube to effectively reduce abnormal noise caused by shaking between the spare tire rocker arm and the ratchet mechanism fixing bracket.

[0012] The rocker fixing pad and the thermoplastic tube structure added by the utility model can reduce abnormal noise caused by the shaking of the spare tire rocker arm during the driving of the bus while keeping the spare tire rocker arm rotatable, thereby effectively improving the comfort of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the structure of the device for reducing abnormal noise of the spare tire fixing mechanism of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the rocker fixing pad of the utility model;

[0016] Figure 3 This is a schematic diagram of the spare tire rocker arm structure after being wrapped by a thermoplastic tube according to the utility model.

[0017] In the figure: 1. Rocker fixing bracket; 2. Spare tire rocker support; 3. Spare tire rocker arm; 4. Ratchet mechanism fixing bracket; 5. Ratchet mechanism; 6. Bolt; 7. Chain; 8. Spare tire fixing mechanism; 9. Rocker fixing pad; 10. Thermoplastic tube. DETAILED DESCRIPTION

[0018] In order to facilitate those skilled in the art to understand and implement the present invention, the following is a detailed description of each step of the method proposed in the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application. Example

[0019] like Figure 1 As shown, a device for reducing abnormal noise of a spare tire fixing mechanism comprises a rocker fixing bracket 1, a spare tire rocker support 2, a spare tire rocker arm 3, a ratchet mechanism fixing bracket 4 and a ratchet mechanism 5; one end of the spare tire rocker arm 3 passes through the spare tire rocker support 2 and is rotatably connected to the rocker fixing bracket 1, the rocker fixing bracket 1 is fixed to one side of a bus chassis, and the rocker fixing bracket 1 and the spare tire rocker support 2 are connected by bolts 6; the other end of the spare tire rocker arm 3 is installed and connected to one end of a ratchet mechanism fixing bracket 4, the other end of the ratchet mechanism fixing bracket 4 is connected to a ratchet mechanism 5, a chain 7 is installed on the ratchet mechanism 5, one end of the chain 7 is installed and connected to the ratchet mechanism 5, and the other end passes through the spare tire fixing mechanism 8 and then returns and is fixed to the middle of the bus chassis.

[0020] like Figure 2 As shown, a rocker fixing pad 9 is provided between the spare tire rocker support 2 and the rocker fixing bracket 1. The rocker fixing pad 9 is squeezed to expand during the installation process, so that the diameter of the installation hole on the rocker fixing pad 9 is reduced, so as to achieve an interference fit between the rocker fixing pad 9 and the spare tire rocker arm 3, thereby reducing the shaking of the spare tire rocker arm 3 during the driving of the bus.

[0021] like Figure 3 As shown, the connection end between the spare tire rocker arm 3 and the ratchet mechanism fixing bracket 4 is wrapped with a thermoplastic tube 10. The buffering of the thermoplastic tube 10 reduces abnormal noise caused by shaking between the spare tire rocker arm 3 and the ratchet mechanism fixing bracket 4.

[0022] The rocker fixing pad 9 is made of rubber, and the thickness of the rocker fixing pad 9 is 6 mm. The rubber rocker fixing pad 9 and the thermoplastic tube 10 can reduce the relative shaking between the spare tire rocker arm 3 and its connecting structure while keeping the spare tire rocker arm 3 rotatable due to the plasticity and cushioning properties of rubber, thereby reducing the abnormal noise caused by the shaking of the spare tire rocker arm 3.

[0023] The bolt 6 is a hexagonal flange bolt, and the bolt 6 is equipped with a double nut for installation and fixation, which can effectively prevent abnormal noise caused by loosening of the bolt 6.

[0024] How it works

[0025] First, a rocker fixing pad 9 is arranged between the spare tire rocker support 2 and the rocker fixing bracket 1. The rocker fixing pad 9 is squeezed and expanded during the installation process, so that the diameter of the installation hole on the rocker fixing pad 9 is reduced, so as to achieve an interference fit between the rocker fixing pad 9 and the spare tire rocker arm 3, thereby eliminating the problem of too large a gap between the spare tire rocker support 2 and the spare tire rocker arm 3, reducing the shaking of the spare tire rocker arm 3 during the driving of the bus, and thus reducing the abnormal noise caused by the shaking of the spare tire rocker arm 3; in addition, by The connecting end of the arm rod 3 and the ratchet mechanism fixing bracket 4 is wrapped with a thermoplastic tube 10, and the buffering effect of the thermoplastic tube 10 is utilized to effectively reduce the abnormal noise caused by the shaking between the spare tire rocker arm rod 3 and the ratchet mechanism fixing bracket 4; the rocker arm fixing pad 9 and the thermoplastic tube 10 structure added by the utility model utilize the plasticity and buffering properties of the rubber material to keep the spare tire rocker arm rod 3 rotatable while reducing the abnormal noise caused by the shaking of the spare tire rocker arm rod 3 during the driving of the bus, thereby effectively improving the riding comfort of the driver and passengers.

[0026] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A device for reducing abnormal noise of a spare tire fixing mechanism, characterized in that: The invention comprises a rocker fixing bracket (1), a spare tire rocker support (2), a spare tire rocker arm (3), a ratchet mechanism fixing bracket (4) and a ratchet mechanism (5); one end of the spare tire rocker arm (3) passes through the spare tire rocker support (2) and is rotatably connected to the rocker fixing bracket (1); the rocker fixing bracket (1) is fixed to one side of a bus chassis; the rocker fixing bracket (1) and the spare tire rocker support (2) are connected via bolts (6); the other end of the spare tire rocker arm (3) is connected to one end of a ratchet mechanism fixing bracket (4); the other end of the ratchet mechanism fixing bracket (4) is connected to a ratchet mechanism (5); a chain (7) is installed on the ratchet mechanism (5); one end of the chain (7) is connected to the ratchet mechanism (5); the other end of the chain (7) passes through the spare tire fixing mechanism (8) and then returns to be fixed to the middle of the bus chassis.

2. The device for reducing abnormal noise of a spare tire fixing mechanism according to claim 1, characterized in that: A rocker fixing cushion block (9) is provided between the spare tire rocker support (2) and the rocker fixing bracket (1).

3. The device for reducing abnormal noise of a spare tire fixing mechanism according to claim 1, characterized in that: The connection end between the spare tire rocker arm (3) and the ratchet mechanism fixing bracket (4) is wrapped with a thermoplastic tube (10).

4. The device for reducing abnormal noise of a spare tire fixing mechanism according to claim 2, characterized in that: The rocker fixing pad (9) is made of rubber and has a thickness of 6 mm.

5. The device for reducing abnormal noise of a spare tire fixing mechanism according to claim 1, characterized in that: The bolt (6) is a hexagonal flange bolt, and the bolt (6) is equipped with a double nut for installation and fixing.

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