Top cover cross beam damping plate structure for automobile noise reduction

Abstract

The utility model relates to the technical field of automobile noise reduction, in particular to a top cover beam damping plate structure for automobile noise reduction, which comprises two automobile body frames. Reinforcing ribs are arranged on the front cross beam, the middle beam and the rear cross beam respectively, a counterweight strip is arranged between the two vehicle body frames, the front cross beam, the middle beam and the rear cross beam are fixed between the two vehicle body frames through cushioning assemblies at the ends of the front cross beam, the middle beam and the rear cross beam respectively, high-pressure inert gas is poured into the hollow gas rod, a piston rod is arranged in the hollow gas rod in a sliding mode, and the piston rod is connected with the hollow gas rod. Vibration generated by a vehicle can be weakened under the action of the first rubber cushioning blocks, vibration can be weakened again under the gravity action of the balance weight strips, reinforcing ribs are arranged on the front cross beam, the middle beam and the rear cross beam correspondingly, then the structural strength of the front cross beam, the middle beam and the rear cross beam is improved, noise of the vehicle roof cross beam is reduced, and the vehicle roof cross beam noise is reduced. And compared with a traditional top cover cross beam damping plate, the top cover cross beam damping plate is higher in structural strength and better in damping and noise reduction effect.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile noise reduction, in particular to a top cover crossbeam shock-absorbing plate structure used for automobile noise reduction. Background Art

[0002] When a car is driving, its mechanical connection structure will transmit the vibration generated by the engine to the entire car body, causing the car body to vibrate and make noise, seriously affecting the riding comfort of the passengers. In order to reduce the body noise, the car body structure will be optimized or sound insulation and shock-resistant structures will be added during the production and processing process.

[0003] A patent with announcement number CN 103847804 A discloses a roof crossbeam shock-absorbing plate structure for automobile noise reduction, which includes a roof front crossbeam and a roof rear crossbeam connecting both sides of the vehicle body, a first shock-absorbing plate bracket is provided on the roof front crossbeam, a first shock-absorbing plate counterweight is fixedly connected to the first shock-absorbing plate bracket, a second shock-absorbing plate bracket is provided on the roof rear crossbeam, a second shock-absorbing plate counterweight is fixedly connected to the second shock-absorbing plate bracket, and by adding counterweights to the roof front crossbeam and the roof rear crossbeam, the purpose of increasing the weight of the roof front crossbeam and the roof rear crossbeam is achieved, and the amplitude of the roof front crossbeam and the roof rear crossbeam is reduced, and at the same time, the vehicle body transfer function is also changed to reduce the acceleration noise at some speeds. It is a simple structure and obvious effect of automobile noise reduction method.

[0004] However, due to the poor structural strength of the existing roof cross beam shock-absorbing plate, when the vehicle passes through a bumpy road, the cross beam is easily bent downward and deformed under the gravity of the counterweight block, and the noise reduction effect is poor, and the vibration generated by the cross beam cannot be effectively reduced. The noise reduction effect is poor and the structural strength is low. Therefore, in view of the above problems, a roof cross beam shock-absorbing plate structure for automobile noise reduction is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and address the problems existing in the prior art, the utility model proposes a roof crossbeam shock-absorbing plate structure for automobile noise reduction.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the utility model discloses a roof crossbeam shock-absorbing plate structure for automobile noise reduction, comprising two body frames; a front crossbeam, a middle crossbeam and a rear crossbeam are arranged transversely between the two body frames, and reinforcing ribs are respectively arranged on the front crossbeam, the middle crossbeam and the rear crossbeam, and a counterweight bar is arranged between the two body frames, and three No. 2 through grooves are penetrated through the side surface of the counterweight bar, and the front crossbeam, the middle beam and the rear crossbeam are respectively penetrated and arranged in the three No. 2 through grooves;

[0007] The front cross beam, the middle beam and the rear cross beam are respectively provided with shock absorbing components at both ends, and the front cross beam, the middle beam and the rear cross beam are respectively fixed between the two vehicle body frames through the shock absorbing components at their ends;

[0008] A No. 2 rubber shock-absorbing block is respectively installed at the bottom inner side of the two vehicle body frames through a mounting seat, a hollow gas rod is swingably installed on the No. 2 rubber shock-absorbing block, high-pressure inert gas is poured into the hollow gas rod, a piston rod is slidingly arranged in the hollow gas rod, and the other end of the piston rod is swingably installed on the upper part of the side of the counterweight bar, so as to achieve the effect of noise reduction. Compared with the traditional top cover crossbeam shock-absorbing plate, the structure has higher strength and better shock-absorbing and noise reduction effect.

[0009] Preferably, bottom fixing plates for fixing the front cross beam, the middle beam and the rear cross beam are respectively installed under the openings of the three No. 2 through grooves, and there are multiple piston rods, which are symmetrically arranged on the inner sides of the two body frames and staggered between the front cross beam, the middle beam and the rear cross beam, so as to achieve the function of fixing the cross beam of the vehicle roof cover and can weaken the transmission of body vibration to the cross beam.

[0010] Preferably, the shock-absorbing assembly includes a No. 1 through slot, a No. 2 slot and two No. 3 through holes. The No. 1 through slot is opened on the inner sides of the two vehicle body frames, and the two No. 3 through holes are symmetrically opened on the inner sides of the vehicle body frames and located on both sides of the No. 1 through slot, so as to achieve the effect of fixing the crossbeam and ensure the stability of the crossbeam fixation.

[0011] Preferably, a No. 1 rubber shock-absorbing block is penetrated in the No. 1 through groove, an engaging groove engaged with the No. 1 through groove is provided on the No. 1 rubber shock-absorbing block, a No. 1 slot for penetrating the ends of the front cross beam, the middle beam and the rear cross beam is penetrated on the side of the No. 1 rubber shock-absorbing block, a No. 1 through hole is penetrated on both sides of the No. 1 slot on the side of the No. 1 rubber shock-absorbing block, and the No. 2 slot is provided at the ends of the front cross beam, the middle beam and the rear cross beam, so that the No. 1 rubber shock-absorbing block can be installed and fixed together, and can be connected and installed with the cross beam.

[0012] Preferably, a screw is provided through the No. 1 through hole, an insert plate is provided in the No. 2 slot, and an end fixing plate is installed on the side of the other end of the insert plate, which cooperates to achieve the function of fixing the crossbeam and ensure the firmness of the crossbeam installation.

[0013] Preferably, two No. 2 through holes are provided on the side of the end fixing plate corresponding to the No. 1 through hole, and the threaded end of the screw is penetrated and arranged in the No. 2 through hole, and the side of the end fixing plate opposite to the plug plate is respectively provided with grooves at the openings of the two No. 2 through holes, which cooperate to achieve the function of connecting and installing the crossbeam and the vehicle body frame, ensure the firmness of the crossbeam installation, and enhance the anti-seismic and noise reduction effects.

[0014] Preferably, nuts for fastening the threaded ends of the two screw rods are respectively arranged in the two sinking grooves, and the combination achieves the effect of fastening the crossbeam and the end fixing plate bolts.

[0015] The utility model is beneficial in that:

[0016] 1. The vibration generated by the vehicle of the utility model will be weakened under the action of the No. 1 rubber shock-absorbing block, and the vibration will be weakened again under the gravity of the counterweight bar. By arranging reinforcing ribs on the front crossbeam, the middle beam and the rear crossbeam respectively, the structural strength of the front crossbeam, the middle beam and the rear crossbeam is increased, so that the high-pressure gas in the hollow gas rod always pushes the counterweight bar upward to the center, and prevents the front crossbeam, the middle beam and the rear crossbeam from being deformed under the weight of the counterweight bar, and can weaken the vibration transmission of the vehicle body to the front crossbeam, the middle beam and the rear crossbeam, thereby reducing the noise of the vehicle roof crossbeam, and achieving the effect of noise reduction. Compared with the traditional roof crossbeam shock-absorbing plate, the structural strength is higher and the shock-absorbing and noise reduction effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a schematic diagram of a first three-dimensional structure;

[0019] Figure 2 It is an enlarged schematic diagram of the main structure of the vehicle body frame;

[0020] Figure 3 It is an enlarged schematic diagram of area A in the main structure diagram of the vehicle body frame;

[0021] Figure 4 It is an enlarged schematic diagram of the main structure of the beam shock-absorbing component;

[0022] Figure 5 This is an enlarged schematic diagram of the main structure of the beam;

[0023] Figure 6 It is an enlarged schematic diagram of the main structure of the counterweight bar;

[0024] Figure 7 It is an enlarged schematic diagram of the main structure of the shock absorbing component;

[0025] Figure 8 It is an enlarged schematic diagram of the main structure of the end fixing plate;

[0026] Fig. 9This is an enlarged schematic diagram of the main structure of the nut installation.

[0027] In the figure: 1. body frame; 2. No. 1 through slot; 3. No. 1 rubber shock-absorbing block; 4. fitting slot; 5. No. 1 slot; 6. front cross beam; 7. middle beam; 8. rear cross beam; 9. reinforcing rib; 10. counterweight bar; 11. mounting seat; 12. No. 2 rubber shock-absorbing block; 13. hollow gas rod; 14. piston rod; 15. No. 2 slot; 16. plug plate; 17. end fixing plate; 18. No. 1 through hole; 19. No. 2 through hole; 20. countersunk groove; 21. nut; 22. screw; 23. No. 2 through slot; 24. bottom fixing plate; 25. No. 3 through hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-9 As shown, a roof cross beam shock-absorbing plate structure for automobile noise reduction comprises two body frames 1; a front cross beam 6, a middle beam 7 and a rear cross beam 8 are arranged transversely between the two body frames 1, and reinforcing ribs 9 are respectively arranged on the front cross beam 6, the middle beam 7 and the rear cross beam 8; a counterweight bar 10 is arranged between the two body frames 1, and three No. 2 through grooves 23 are opened through the side of the counterweight bar 10, and the front cross beam 6, the middle beam 7 and the rear cross beam 8 are respectively arranged in the three No. 2 through grooves 23;

[0030] The front cross beam 6, the middle beam 7 and the rear cross beam 8 are respectively provided with shock absorbing components at both ends, and the front cross beam 6, the middle beam 7 and the rear cross beam 8 are respectively fixed between the two vehicle body frames 1 through the shock absorbing components at their ends;

[0031] A second rubber shock-absorbing block 12 is respectively installed at the bottom inner side of the two vehicle body frames 1 through a mounting seat 11, and a hollow gas rod 13 is swingably installed on the second rubber shock-absorbing block 12. The hollow gas rod 13 is filled with high-pressure inert gas, and a piston rod 14 is slidably arranged in the hollow gas rod 13, and the other end of the piston rod 14 is swingably installed on the upper side of the counterweight bar 10.

[0032] Bottom fixing plates 24 for fixing the front cross beam 6, the middle beam 7 and the rear cross beam 8 are respectively installed under the openings of the three No. 2 through grooves 23. There are multiple piston rods 14, which are symmetrically arranged on the inner sides of the two vehicle body frames 1 and staggered between the front cross beam 6, the middle beam 7 and the rear cross beam 8.

[0033] The shock absorbing assembly includes a No. 1 through slot 2, a No. 2 slot 15 and two No. 3 through holes 25. The No. 1 through slot 2 is opened on the inner sides of the two vehicle body frames 1, and the two No. 3 through holes 25 are symmetrically opened on the inner sides of the vehicle body frames 1 and located on both sides of the No. 1 through slot 2.

[0034] A No. 1 rubber shock-absorbing block 3 is penetrated in the No. 1 through groove 2, and an engaging groove 4 is provided on the No. 1 rubber shock-absorbing block 3 to be engaged with the No. 1 through groove 2. A No. 1 slot 5 for penetrating the ends of the front cross beam 6, the middle beam 7 and the rear cross beam 8 is penetrated on the side of the No. 1 rubber shock-absorbing block 3, and a No. 1 through hole 18 is penetrated on both sides of the No. 1 slot 5 on the side of the No. 1 rubber shock-absorbing block 3, and the No. 2 slot 15 is provided at the ends of the front cross beam 6, the middle beam 7 and the rear cross beam 8.

[0035] A screw rod 22 is provided in the first through hole 18 , a plug plate 16 is provided in the second slot 15 , and an end fixing plate 17 is installed on the other side of the plug plate 16 .

[0036] Two No. 2 through holes 19 are provided on the side of the end fixing plate 17 corresponding to the No. 1 through hole 18, and the threaded end of the screw rod 22 is penetrated and arranged in the No. 2 through hole 19, and grooves 20 are respectively provided at the openings of the two No. 2 through holes 19 on the side of the end fixing plate 17 opposite to the insert plate 16.

[0037] Nuts 21 for fastening the threaded ends of two screw rods 22 are respectively arranged in the two sinking grooves 20 .

[0038] During operation, due to the poor structural strength of the existing top cover cross beam shock-absorbing plate, when the vehicle passes through a bumpy road, the cross beam is easily bent downward and deformed under the gravity of the counterweight block, and the noise reduction effect is poor, and the vibration generated by the cross beam cannot be effectively reduced. The noise reduction effect is poor and the structural strength is low. In this solution, the high-pressure inert gas in the hollow gas rod 13 in the initial state will always push the piston rod 14 outward to keep the counterweight bar 10 between the two vehicle body frames 1, and the counterweight bar 10 fixes the front cross beam 6, the middle beam 7 and the rear cross beam 8. The ends of the front cross beam 6, the middle beam 7 and the rear cross beam 8 are installed between the two vehicle body frames 1 through a shock-absorbing assembly. The vibration generated by the vehicle will be weakened under the action of the No. 1 rubber shock-absorbing block 3, and the counterweight bar 10 is arranged on the front cross beam 6, the middle beam 7 and the rear cross beam 8. , the vibration is weakened again under the gravity of the counterweight bar 10. When the vehicle is driving on a bumpy road, reinforcing ribs 9 are respectively arranged on the front cross beam 6, the middle beam 7 and the rear cross beam 8, thereby increasing the structural strength of the front cross beam 6, the middle beam 7 and the rear cross beam 8. By arranging multiple sets of hollow gas rods 13 and piston rods 14 on both sides of the counterweight bar 10, the high-pressure gas in the hollow gas rods 13 always pushes the counterweight bar 10 upward to prevent the front cross beam 6, the middle beam 7 and the rear cross beam 8 from deforming under the weight of the counterweight bar 10, and can weaken the vibration transmission of the vehicle body to the front cross beam 6, the middle beam 7 and the rear cross beam 8, thereby reducing the noise of the vehicle roof beam, and achieving the effect of noise reduction. Compared with the traditional roof beam shock-absorbing plate, the structural strength is higher and the shock-absorbing and noise reduction effect is better.

[0039] Working principle: the high-pressure inert gas in the hollow gas rod 13 in the initial state will always push the piston rod 14 outward, so that the counterweight bar 10 is maintained between the two body frames 1, and the counterweight bar 10 fixes the front cross beam 6, the middle beam 7 and the rear cross beam 8. The ends of the front cross beam 6, the middle beam 7 and the rear cross beam 8 are installed between the two body frames 1 through the shock-absorbing assembly. The vibration generated by the vehicle will be weakened under the action of the No. 1 rubber shock-absorbing block 3. The counterweight bar 10 is arranged on the front cross beam 6, the middle beam 7 and the rear cross beam 8. The vibration is weakened again under the action of the gravity of the counterweight bar 10. When the vehicle is driving on a bumpy road, the front cross beam 6, the middle beam 7 and the rear cross beam 8 are connected to the counterweight bar 10. Reinforcing ribs 9 are respectively arranged on the front crossbeam 6, the middle beam 7 and the rear crossbeam 8, thereby increasing the structural strength of the front crossbeam 6, the middle beam 7 and the rear crossbeam 8, and through the multiple sets of hollow gas rods 13 and piston rods 14 arranged on both sides of the counterweight bar 10, the high-pressure gas in the hollow gas rods 13 always pushes the counterweight bar 10 upward to the center, preventing the front crossbeam 6, the middle beam 7 and the rear crossbeam 8 from being deformed under the weight of the counterweight bar 10, and can weaken the vibration transmission of the vehicle body to the front crossbeam 6, the middle beam 7 and the rear crossbeam 8, thereby reducing the noise of the vehicle roof crossbeam, and achieving the effect of noise reduction. Compared with the traditional roof crossbeam shock-absorbing plate, the structural strength is higher and the shock-absorbing and noise reduction effect is better.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A roof crossbeam damping plate structure for automobile noise reduction, characterized in that: The vehicle comprises two vehicle body frames (1); a front cross beam (6), a middle beam (7) and a rear cross beam (8) are arranged transversely between the two vehicle body frames (1); reinforcing ribs (9) are respectively arranged on the front cross beam (6), the middle beam (7) and the rear cross beam (8); a counterweight bar (10) is arranged between the two vehicle body frames (1); three No. 2 through grooves (23) are penetrated through the side surface of the counterweight bar (10); and the front cross beam (6), the middle beam (7) and the rear cross beam (8) are respectively penetrated through the three No. 2 through grooves (23); The front cross beam (6), the middle beam (7) and the rear cross beam (8) are respectively provided with shock absorbing components at both ends, and the front cross beam (6), the middle beam (7) and the rear cross beam (8) are respectively fixed between the two vehicle body frames (1) through the shock absorbing components at their ends; A second rubber shock-absorbing block (12) is respectively installed at the bottom of the inner side of the two vehicle body frames (1) through a mounting seat (11), a hollow gas rod (13) is swingably installed on the second rubber shock-absorbing block (12), a high-pressure inert gas is poured into the hollow gas rod (13), a piston rod (14) is slidably arranged in the hollow gas rod (13), and the other end of the piston rod (14) is swingably installed on the upper side of the counterweight bar (10).

2. The roof crossbeam damping plate structure for automobile noise reduction according to claim 1, characterized in that: Bottom fixing plates (24) for fixing the front cross beam (6), the middle beam (7) and the rear cross beam (8) are respectively installed under the openings of the three No. 2 through grooves (23). A plurality of piston rods (14) are provided and are symmetrically arranged on the inner sides of the two vehicle body frames (1) and staggered between the front cross beam (6), the middle beam (7) and the rear cross beam (8).

3. The roof crossbeam damping plate structure for automobile noise reduction according to claim 1, characterized in that: The shock absorbing component comprises a No. 1 through slot (2), a No. 2 slot (15) and two No. 3 through holes (25); the No. 1 through slot (2) is arranged on the inner sides of two vehicle body frames (1); and the two No. 3 through holes (25) are symmetrically arranged on the inner sides of the vehicle body frames (1) and are located on both sides of the No. 1 through slot (2).

4. The roof crossbeam damping plate structure for automobile noise reduction according to claim 3, characterized in that: A No. 1 rubber shock absorbing block (3) is disposed through the No. 1 through groove (2); a fitting groove (4) is provided on the No. 1 rubber shock absorbing block (3) and is fitted with the No. 1 through groove (2); a No. 1 slot (5) is provided on the side of the No. 1 rubber shock absorbing block (3) for inserting the ends of the front cross beam (6), the middle beam (7) and the rear cross beam (8); a No. 1 through hole (18) is provided on the side of the No. 1 rubber shock absorbing block (3) at both sides of the No. 1 slot (5); and the No. 2 slot (15) is provided at the ends of the front cross beam (6), the middle beam (7) and the rear cross beam (8).

5. The roof crossbeam damping plate structure for automobile noise reduction according to claim 4, characterized in that: A screw rod (22) is provided through the first through hole (18), a plug plate (16) is provided in the second slot (15), and an end fixing plate (17) is installed on the other side of the plug plate (16).

6. The roof crossbeam damping plate structure for automobile noise reduction according to claim 5, characterized in that: Two No. 2 through holes (19) are provided on the side of the end fixing plate (17) corresponding to the No. 1 through hole (18), and the threaded end of the screw rod (22) is inserted into the No. 2 through hole (19), and the side of the end fixing plate (17) opposite to the insert plate (16) is provided with recessed grooves (20) at the openings of the two No. 2 through holes (19).

7. The roof crossbeam damping plate structure for automobile noise reduction according to claim 6, characterized in that: Nuts (21) for fastening the threaded ends of two screw rods (22) are respectively arranged in the two sinking grooves (20).

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