Assembled dynamic vibration absorber wrapped with pre-positioned vulcanized metal plate

Abstract

The invention discloses an assembly type dynamic vibration absorber wrapped with a pre-positioned vulcanized metal plate, which comprises a bracket, connecting lugs are integrally formed at the two ends of the bracket, and connecting holes are formed in the inner sides of the connecting lugs; the mass block is arranged on one side wall of the connecting lug; the rubber block is arranged on the other side wall of the connecting lug, and a pin connected with the mass block is arranged on the inner side of the rubber block; the metal plate is arranged on the inner side of the rubber block, and positioning holes corresponding to the pins are formed in the inner side of the metal plate in a penetrating mode; through the arrangement of the support, the mass block, the metal plate, the rubber block and the pin, the situation that the framework needs to be coated with an adhesive, and the physical and psychological health of an operator is affected is avoided, the metal plate is designed at the bottom of the rubber block, the metal plate and the rubber block are vulcanized, the rigidity of the bottom is improved, and the positioning grooves are designed in the two end faces of the mass block. And the positioning groove and the rubber block can be well pre-positioned to keep coaxial, so that the risk of eccentricity is reduced.

Description

Technical Field

[0001] The invention specifically relates to an assembled dynamic vibration absorber wrapped with a pre-positioned vulcanized metal plate. Background Art

[0002] When the automobile parts are in working condition, abnormal vibration caused by vibration will seriously affect the NVH performance and affect the comfort of the whole vehicle. Dynamic shock absorber is an important component in the automobile. It is usually installed on the frame, chassis, steering wheel, tailgate, roof and other automobile parts to reduce the corresponding vibration in order to maximize the attenuation of the resonance band of structure-borne noise, thereby meeting the NVH performance of the whole vehicle.

[0003] However, most of the existing dynamic vibration absorbers are vulcanized and molded with rubber and a frame as a whole. The development process is complicated and difficult, and the frame needs to be coated with adhesive. The adhesive itself is expensive, and harmful substances will be produced during the coating process, which will affect the physical and mental health of the operator. During installation and assembly, in order to prevent the high durability of the dynamic vibration absorber and the mass block from falling off under extreme working conditions, a first limit pin and a second limit pin must be inserted through the holes at both ends of the bracket and the axial hole of the rubber resistance system and then interference-fitted on the mass block. However, positioning during assembly and installation is difficult and time-consuming, and there are cases of incorrect positioning and eccentricity. It is impossible to ensure that the bracket assembly hole, the mass block, and the rubber damping block are coaxial. The eccentricity affects the frequency performance of the dynamic vibration absorber, and the assembly is also more troublesome, which is not convenient for quick assembly. For this reason, we propose a wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber. Summary of the invention

[0004] The object of the present invention is to provide a wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber to solve the problem proposed in the above background technology that the existing dynamic vibration absorber frame needs to be coated with adhesive, which affects the physical and mental health of the operator, and the positioning during assembly and installation is difficult and time-consuming. There are situations of incorrect positioning and eccentricity, and the problem of being unable to ensure the coaxiality of the bracket assembly hole, the mass block, and the rubber damping block.

[0005] To achieve the above object, the present invention provides the following technical solution: a wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber, comprising:

[0006] A bracket, wherein connecting ears are integrally formed at both ends of the bracket, and connecting holes are formed inside the connecting ears;

[0007] A mass block is arranged on one side wall of the connecting ear;

[0008] A rubber block is arranged on the other side wall of the connecting ear, and the inner side of the rubber block has a pin connected to the mass block;

[0009] A metal plate is arranged inside the rubber block, and a positioning hole corresponding to the pin is opened through the inner side of the metal plate;

[0010] Wherein, the outer surface of the metal plate is wrapped with a rubber layer.

[0011] Preferably, a shock absorbing groove is formed on one end surface of the rubber block, and the inner diameter of the shock absorbing groove is larger than the outer diameter of the pin.

[0012] Preferably, a through hole is formed at one end of the inner side wall of the shock absorbing groove, and the through hole passes through the outer surface of the rubber block.

[0013] Preferably, the outer surface of the rubber block is provided with a first boss and a second boss in sequence along its axial direction, and the outer diameter of the second boss is larger than the outer diameter of the first boss, and a groove matching the connecting hole is provided between the second boss and the first boss.

[0014] Preferably, one side wall of the first boss has an inclined surface.

[0015] Preferably, a side wall of the connecting ear is provided with a flange corresponding to the connecting hole.

[0016] Preferably, a mounting groove is formed on the inner side of one end of the rubber block, and the shape and size of the mounting groove match those of the metal plate.

[0017] Preferably, positioning grooves cooperating with the rubber block are formed at both ends of the mass block, and connecting grooves are formed inside the positioning grooves along the axial direction of the mass block, and the connecting grooves cooperate with the pins.

[0018] Preferably, the metal plate, the rubber block and the pin are each provided at two locations.

[0019] Preferably, the connecting ear is L-shaped, and a mounting hole is provided on the connecting ear.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This patent is provided with a bracket, a mass block, a metal plate, a rubber block and a pin, so that the bracket and the mass block can be connected by quickly installing the rubber block. In order to ensure high durability, pins are designed at both ends. The extreme displacement of the pin under extreme working conditions of the car will contact the rubber block. The rubber block and the bracket are assembled, and the bracket provides a large rigid support on the outside, thereby ensuring the high durability of the product. This connection method is relatively novel, with low development difficulty, low cost, and short development time. It has high matching and avoids the need to apply adhesive on the skeleton, which affects the physical and mental health of the operator. In addition, a metal plate is designed at the bottom of the rubber block of this patent. The metal plate and the rubber block are systematically vulcanized to improve the rigidity of the bottom, and positioning grooves are designed at both end surfaces of the mass block. The positioning groove and the rubber block can be well pre-positioned to maintain the coaxial center, thereby improving the product assembly efficiency and ensuring the performance stability of the product, reducing the risk of eccentricity, and designing a shock-absorbing groove and a through hole at one end of the rubber block, so that it is easy to quickly assemble it to the bracket by pulling with needle-nosed pliers, thereby improving the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the pin of the present invention;

[0025] Figure 4 is a schematic cross-sectional structural diagram of the second boss of the present invention;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the rubber block of the present invention.

[0027] In the figure: 1, bracket; 2, mass block; 201, connecting groove; 3, connecting ear; 4, connecting hole; 5, flange; 6, metal plate; 7, rubber block; 701, shock-absorbing groove; 702, second boss; 703, first boss; 704, inclined surface; 705, slot; 706, assembly slot; 707, through hole; 8, pin. DETAILED DESCRIPTION

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

[0029] See also Figure 1-Figure 5The present invention provides a technical solution: a wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber, comprising:

[0030] The bracket 1 has connecting ears 3 integrally formed at both ends of the bracket 1, and connecting holes 4 are provided inside the connecting ears 3 to facilitate installation and connection of the vibration-damping rubber block 7 and the mass block 2;

[0031] The mass block 2 is arranged on a side wall of the connecting ear 3;

[0032] The rubber block 7 is arranged on the other side wall of the connecting ear 3, and the inner side of the rubber block 7 has a pin 8 connected with the mass block 2, so as to facilitate the connection and fixation of the rubber block 7 and the mass block 2;

[0033] The metal plate 6 is arranged inside the rubber block 7, and a positioning hole corresponding to the pin 8 is opened through the inner side of the metal plate 6 to facilitate positioning, so that the pin 8, the rubber block 7 and the mass block 2 are coaxial, reducing the eccentricity during installation or use;

[0034] The outer surface of the metal plate 6 is wrapped with a rubber layer to better reduce the rigid collision noise between the metal plate 6 and the pin 8 .

[0035] Preferably, a shock absorbing groove 701 is formed on one end surface of the rubber block 7, and the inner diameter of the shock absorbing groove 701 is larger than the outer diameter of the pin 8, so as to reserve space to reduce direct contact and collision between the pin 8 and the rubber block 7 during vibration reduction.

[0036] Preferably, a through hole 707 is formed at one end of the inner wall of the shock absorbing groove 701 , and the through hole 707 penetrates the outer surface of the rubber block 7 , so that during assembly, one end of the rubber block 7 can be pulled through the connecting hole 4 by needle-nosed pliers.

[0037] Preferably, the outer surface of the rubber block 7 is sequentially provided with a first boss 703 and a second boss 702 along its axial direction, and the outer diameter of the second boss 702 is larger than the outer diameter of the first boss 703, and a slot 705 matching the connecting hole 4 is provided between the second boss 702 and the first boss 703, so as to facilitate the rapid fixing of the rubber block 7 to the connecting ear 3, and the slot 705 may not be circular, and the inside of the slot 705 may be composed of a plurality of bosses, and the inner wall of the connecting hole 4 has a corresponding groove, and the cooperation between the boss and the groove further plays a role in preventing torsional deformation or rotational movement.

[0038] Preferably, a side wall of the first boss 703 has a slope 704 to facilitate the first boss 703 to pass through the inner side of the connecting hole 4 so that the connecting hole 4 moves to the slot 705 for mating.

[0039] Preferably, a flange 5 is provided on one side wall of the connecting ear 3 corresponding to the connecting hole 4 to improve the strength of the connecting hole 4 .

[0040] Preferably, a mounting groove 706 is provided inside one end of the rubber block 7, and the shape and size of the mounting groove 706 match the metal plate 6, so that the metal plate 6 can be placed inside the rubber block 7 to be fixed by vulcanization.

[0041] Preferably, positioning grooves matching with the rubber block 7 are provided at both ends of the mass block 2, and a connecting groove 201 is provided inside the positioning groove along the axial direction of the mass block 2. The connecting groove 201 matches with the pin 8 to facilitate pre-positioning so that the mass block 2 and the rubber block 7 are coaxial.

[0042] Preferably, the metal plate 6, the rubber block 7 and the pin 8 are each provided at two locations.

[0043] Preferably, the connecting ear 3 is in an "L" shape, and a mounting hole is provided on the connecting ear 3 to facilitate the subsequent connection with the car.

[0044] The working principle and use process of the present invention are as follows: when in use, the surface of the metal plate 6 is wrapped with rubber, and is vulcanized and fixed together with the rubber block 7. The rubber block 7 is pulled toward the connecting ear 3 at the shock-absorbing groove 701 by needle-nosed pliers or a circular installation fixture, so that the rubber block 7 passes through the inclined surface 704 and penetrates into the inner side of the connecting hole 4. The connecting hole 4 cooperates with the card slot 705, and the rubber block 7 can be fixed to the connecting ear 3. When the mass block 2 is installed, the positioning grooves on the two end surfaces of the mass block 2 correspond to the rubber block 7 for pre-positioning, and one end of the pin 8 is passed through the rubber block 7 and the inner side of the metal plate 6 to cooperate with the connecting groove 201 to complete the installation of the mass block 2. By using the metal plate 6 as support, the rigidity and strength are relatively large, and the mass block 2, the metal plate 6, the rubber block 7 and the metal plate 6 can be well guaranteed during the installation of the pin 8. The coaxiality of the pin 8 greatly improves the assembly efficiency and ensures the damping performance of the product. Since the metal plate 6 is wrapped with a layer of rubber, the abnormal noise caused by the collision and contact between metals can be eliminated, and the rigidity and strength are relatively large, thereby improving the durability of the dynamic vibration absorber. The high durability of this patent is mainly manifested in extreme working conditions. If the vehicle body enters a pothole or a bumpy road section, the displacement of the mass block 2 is relatively large. During large radial vibrations, the pin 8 installed on the mass block 2 with interference fit will move with the mass block 2. When it contacts the inner wall of the shock-absorbing groove 701, the vibration will be greatly buffered. The contact groove 705 between this area and the connecting ear 3 provides great rigidity support. The large vibration movement of the pin 8 will be eliminated, thereby eliminating the large vibration movement of the mass block 2, thereby ensuring the high durability of the vibration absorber.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber, characterized in that: include: A bracket (1), wherein connecting ears (3) are integrally formed at both ends of the bracket (1), and connecting holes (4) are formed inside the connecting ears (3); A mass block (2) is arranged on a side wall of the connecting ear (3); A rubber block (7) is arranged on the other side wall of the connecting ear (3), and the inner side of the rubber block (7) has a pin (8) connected to the mass block (2); A metal plate (6) is arranged inside the rubber block (7), and a positioning hole corresponding to the pin (8) is formed through the inside of the metal plate (6); Wherein, the outer surface of the metal plate (6) is wrapped with a rubber layer.

2. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: A shock absorbing groove (701) is provided on one end surface of the rubber block (7), and the inner diameter of the shock absorbing groove (701) is greater than the outer diameter of the pin (8).

3. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 2, characterized in that: A through hole (707) is provided at one end of the inner side wall of the shock absorbing groove (701), and the through hole (707) passes through the outer surface of the rubber block (7).

4. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: The outer surface of the rubber block (7) is provided with a first boss (703) and a second boss (702) in sequence along its axial direction, and the outer diameter of the second boss (702) is larger than the outer diameter of the first boss (703), and a slot (705) matching with the connecting hole (4) is provided between the second boss (702) and the first boss (703).

5. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 4, characterized in that: A side wall of the first boss (703) has an inclined surface (704).

6. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: A flange (5) is provided on one side wall of the connecting ear (3) corresponding to the connecting hole (4).

7. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: An assembly groove (706) is provided on the inner side of one end of the rubber block (7), and the shape and size of the assembly groove (706) match those of the metal plate (6).

8. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: Positioning grooves matching with the rubber block (7) are provided at both ends of the mass block (2), and a connecting groove (201) is provided inside the positioning groove along the axial direction of the mass block (2), and the connecting groove (201) matches with the pin (8).

9. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: The metal plate (6), the rubber block (7) and the pin (8) are all provided at two locations.

10. The wrapped pre-positioned vulcanized metal plate assembled dynamic vibration absorber according to claim 1, characterized in that: The connecting ear (3) is in an "L" shape and is provided with a mounting hole.

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