Rubber damping bushing

Abstract

The utility model discloses a rubber damping bushing which comprises a rubber bushing body, the rubber bushing body is arranged on the outer side of a first metal shell in a sleeved mode, a second metal shell is arranged on the outer side of the rubber bushing body in a sleeved mode, sealing grooves are symmetrically formed in the inner side of the top and the inner side of the bottom of the second metal shell, and sealing ring plates are arranged in the sealing grooves. A plurality of rubber strips are arranged on the surface of the inner side of the rubber bushing body, a limiting groove is formed in the surface of the outer side of the first metal shell, a first cavity is formed in each rubber strip, a second cavity is formed in the rubber bushing body, a ventilation nozzle communicated with the first cavity is formed in the top of each rubber strip, and two sets of fixing boxes are embedded in the surface of the outer side of the rubber bushing body. Limiting columns are slidably inserted into the outer side surface of the fixing box, and an insertion groove is formed in the inner side wall of the second metal shell. The device can uniformly exert limiting and fixing effects on the surfaces of the inner side and the outer side of the rubber bushing body, the stability of the rubber bushing body is greatly improved, looseness is effectively prevented, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber bushings, in particular to a rubber shock-absorbing bushing. Background Art

[0002] Rubber shock-absorbing bushings are mechanical components used for vibration reduction, isolation, and noise reduction. Rubber shock-absorbing bushings and steel frames are often complementary in mechanical systems, their connection primarily reflected in the coordination of structural support and shock absorption. The steel frame provides structural support and strength and is typically the supporting portion or fixed frame of the rubber shock-absorbing bushing. The steel frame is typically a shell made of steel or other metal that supports and secures the rubber bushing and the components to which it is attached. In many applications, the rubber shock-absorbing bushing is designed to be embedded in or encased within the steel frame. For example, a shock absorber in an automotive suspension system may have a metal shell (steel frame) and a rubber bushing within. The rubber portion is responsible for shock absorption, while the steel frame provides structural strength and fixed support. The steel frame provides a base for fixing the rubber bushing, ensuring that the rubber portion can operate in the desired position, while the rubber shock-absorbing bushing handles vibration and shock during operation.

[0003] When the existing rubber shock-absorbing bushing is in use, the bushing is generally directly sleeved in the metal shell, and a metal shell is also provided inside the bushing. However, due to wear and tear during long-term operation, the connection between the bushing and the metal shell will become loose, thereby affecting its normal use and greatly reducing the practicality of the device. To this end, we designed a rubber shock-absorbing bushing to solve the above technical problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a rubber shock-absorbing bushing to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A rubber shock-absorbing bushing comprises a rubber bushing body, which is sleeved on the outside of a first metal shell, and a second metal shell is sleeved on the outside of the rubber bushing body. Sealing grooves are symmetrically provided on the top inner side and the bottom inner side of the second metal shell, and a sealing ring plate is detachably installed in the sealing groove. A plurality of rubber strips are provided on the inner surface of the rubber bushing body, and a limiting groove for embedding the rubber strips is provided on the outer surface of the first metal shell. The upper and lower ends of the limiting groove are through-set, and a first cavity is provided inside the rubber strip, and a second cavity corresponding to the first cavity is provided inside the rubber bushing body. The second cavity is connected to the corresponding first cavity, and a vent nozzle connected to the first cavity is provided on the top of the rubber strip.

[0007] The outer surface of the rubber bushing body is embedded with two groups of fixed boxes, and the outer surface of the fixed box is slidably inserted with a limit column. The inner side wall of the second metal shell is provided with a slot for the front end of the limit column to be embedded, the inner end surface of the limit column is embedded with a magnet A, and the inner bottom wall of the fixed box is embedded with a magnet B that attracts the magnet A. The outer surface of the limit column near the magnet A is symmetrically provided with sliders, and the slider is slidably sleeved on the outside of the guide rod, and the outside of the guide rod is also sleeved with a shock-absorbing spring. The outer end surface of the limit column is embedded with a magnet C, and the inner bottom wall of the slot is embedded with a magnet D that attracts the magnet C. The inner side wall of the slot is provided with an inner groove, and a baffle is slidably provided in the inner groove. The inner bottom wall of the sealing groove is provided with a plurality of through grooves corresponding to the inner grooves one by one, and the through grooves are connected to the corresponding inner grooves. A push rod is slidably provided in the through groove, and the bottom end of the push rod is connected to the baffle, and the top end of the push rod extends to the outside of the through groove.

[0008] As a preferred solution of the present invention: a plurality of fixing bolts are inserted on the sealing ring plate at equal intervals along its circumferential direction, the inner bottom wall of the sealing groove is provided with screw holes matching with the fixing bolts, the inner bottom wall of the sealing groove is provided with a plurality of positioning columns along its circumferential direction, and a positioning groove for the positioning columns to be embedded is provided at the bottom of the sealing ring plate, and the plurality of positioning columns and the plurality of screw holes are arranged alternately.

[0009] As a further preferred solution of the present invention: when the magnet A and the magnet B are attached to each other, the magnet C is located in the opening on the outer surface of the fixing box.

[0010] As a further preferred solution of the present invention: the magnetic force between the magnet A and the magnet B is smaller than the magnetic force between the magnet C and the magnet D.

[0011] As a further preferred solution of the present invention: the plurality of rubber strips and the plurality of fixing boxes are alternately distributed along the circumferential direction of the surface of the rubber bushing body.

[0012] As a further preferred solution of the present invention: the distance between the inner bottom walls of the two sealing grooves is equal to the length of the rubber bushing body.

[0013] As a further preferred solution of the present invention: the rubber strip is arranged in the vertical direction, and a plurality of the rubber strips are distributed at equal intervals along the circumferential direction of the inner surface of the rubber bushing body, and the rubber strip and the rubber bushing body are integrally formed.

[0014] As a further preferred solution of the present invention: the two groups of fixing boxes are symmetrically arranged on the upper and lower sides of the surface of the rubber bushing body, and the number of fixing boxes in each group is multiple and is evenly spaced along the circumferential direction of the outer surface of the rubber bushing body.

[0015] As a further preferred solution of the present invention: the two guide rods are fixedly arranged between the front and rear inner walls of the fixed box, one end of the shock-absorbing spring is connected to the front inner wall of the fixed box, and the other end is connected to the surface of the slider, and the length of the baffle is greater than the width of the slot.

[0016] As a further preferred solution of the present invention: a check valve is provided in the vent nozzle, and a nozzle cap is provided on the external threaded sleeve of the vent nozzle.

[0017] The beneficial effects of the utility model are:

[0018] 1. When the rubber bushing body is sleeved on the outside of the first metal shell, the multiple rubber strips on the rubber bushing body are respectively embedded in the corresponding limit grooves, and then the external air head can be connected to the vent nozzle, and air is inflated into the first cavity and the second cavity. The pressure inside the first cavity increases, causing the rubber strip to expand, thereby improving the tightness of the connection with the limit groove. The pressure inside the second cavity increases, which also causes the rubber bushing body to expand, thereby improving the tightness of the connection with the inner wall of the second metal shell. Due to the presence of the baffle, the magnetic force between magnet C and magnet D is greatly reduced or isolated. And when magnet A and magnet B fit together, the magnet C is located in the opening on the outer surface of the fixed box, so it is convenient to insert the rubber bushing body into the interior of the second metal shell. Subsequently, the push rod can be pushed to drive the baffle to move, so that the baffle is completely moved into the inner groove, that is, there is no obstruction between magnet C and magnet D, and the magnetic force between magnet C and magnet D is restored, so that the limit column moves and embeds into the slot, realizing the card-connection limit effect, which can greatly increase the stability between the second metal shell and the rubber bushing body, and the installation process is simple and convenient, highly practical, and worthy of popularization and use.

[0019] 2. In this device, the multiple rubber strips and the multiple fixing boxes are alternately distributed along the circumferential direction of the surface of the rubber bushing body. This design can evenly exert a limiting and fixing effect on the inner and outer surfaces of the rubber bushing body, greatly improving the stability of the connection between the first metal shell and the second metal shell and the rubber bushing body, effectively preventing loosening, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a cross-sectional view of the overall structure of the utility model

[0022] Figure 2 It is a top view of the overall structure of the utility model;

[0023] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0025] Among them: 1-rubber bushing body, 2-fixing bolt, 3-second metal shell, 4-vent nozzle, 5-rubber strip, 6-first metal shell, 7-sealing groove, 8-positioning column, 9-screw hole, 10-limiting groove, 11-second cavity, 12-first cavity, 13-fixing box, 14-guide rod, 15-shock-absorbing spring, 16-slider, 17-magnet A, 18-magnet B, 19-limiting column, 20-magnet C, 21-baffle, 22-slot, 23-magnet D, 24-push rod, 25-inner groove, 26-sealing ring plate. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0027] See also Figure 1-4 In an embodiment of the present invention, a rubber shock-absorbing bushing includes a rubber bushing body 1, which is sleeved on the outside of a first metal shell 6. A second metal shell 3 is sleeved on the outside of the rubber bushing body 1. Sealing grooves 7 are symmetrically opened on the top inner side and the bottom inner side of the second metal shell 3. The distance between the inner bottom walls of the two sealing grooves 7 is equal to the length of the rubber bushing body 1. A sealing ring plate 26 is detachably installed in the sealing groove 7. The sealing ring plate 26 can be installed just between the first metal shell 6 and the second metal shell 3. A plurality of rubber strips 5 are provided on the inner surface of the rubber bushing body 1. The rubber strips 5 are arranged in the vertical direction. In addition, multiple rubber strips 5 are distributed at equal intervals along the circumferential direction of the inner surface of the rubber bushing body 1. A limiting groove 10 for the rubber strip 5 to be embedded is opened on the outer surface of the first metal shell 6. The upper and lower ends of the limiting groove 10 are penetrated. The rubber strip 5 and the rubber bushing body 1 are integrally formed. A first cavity 12 is provided inside the rubber strip 5. A second cavity 11 corresponding to the first cavity 12 is provided inside the rubber bushing body 1. The second cavity 11 is connected to the corresponding first cavity 12. A vent nozzle 4 connected to the first cavity 12 is provided on the top of the rubber strip 5. A check valve is provided inside the vent nozzle 4, and a mouth cap is provided on the external threaded sleeve of the vent nozzle 4.

[0028] Two groups of fixing boxes 13 are embedded in the outer surface of the rubber bushing body 1. The two groups of fixing boxes 13 are symmetrically arranged on the upper and lower sides of the surface of the rubber bushing body 1. There are multiple fixing boxes 13 in each group, and they are evenly spaced along the circumferential direction of the outer surface of the rubber bushing body 1. The outer surface of the fixing box 13 is slidably inserted with a limiting column 19. The inner side wall of the second metal shell 3 is provided with a slot 22 for the front end of the limiting column 19 to be embedded. The inner end face of the limiting column 19 is embedded with a magnet A17. The inner bottom wall of the fixing box 13 is embedded with a magnet B18 that attracts the magnet A17. The outer surface of the limiting column 19 near the magnet A17 is symmetrically provided with a slider 16. The slider 16 is slidably sleeved on the outside of the guide rod 14, and the two guide rods 14 are fixedly arranged in the fixing box. Between the front and rear inner walls of 13, a shock-absorbing spring 15 is also sleeved on the outside of the guide rod 14, one end of the shock-absorbing spring 15 is connected to the front inner wall of the fixed box 13, and the other end is connected to the surface of the slider 16. The outer end face of the limit column 19 is embedded with a magnet C20, and the inner bottom wall of the slot 22 is embedded with a magnet D23 that attracts the magnet C20. The inner side wall of the slot 22 is provided with an inner groove 25, and a baffle 21 is slidably provided in the inner groove 25. The length of the baffle 21 is greater than the width of the slot 22. The inner bottom wall of the sealing groove 7 is provided with a plurality of through grooves corresponding to the inner grooves 25 one by one. The through grooves are connected to the corresponding inner grooves 25. A push rod 24 is slidably provided in the through groove, and the bottom end of the push rod 24 is connected to the baffle 21, and the top of the push rod 24 extends to the outside of the through groove.

[0029] When magnet A17 and magnet B18 are in contact with each other, magnet C20 is located in the opening on the outer surface of the fixing box 13. This structural design facilitates the insertion of the rubber bushing body 1 into the interior of the second metal shell 3. The magnetic force between magnet A17 and magnet B18 is smaller than the magnetic force between magnet C20 and magnet D23.

[0030] Multiple rubber strips 5 and multiple fixing boxes 13 are alternately distributed along the circumferential direction of the surface of the rubber bushing body 1; this design can evenly apply a limiting and fixing effect on the inner and outer surfaces of the rubber bushing body 1, greatly improving the stability of the connection between the first metal shell 6 and the second metal shell 3 and the rubber bushing body 1, effectively preventing loosening, and improving the practicality of the device.

[0031] A plurality of fixing bolts 2 are inserted into the sealing ring plate 26 at equal intervals along its circumferential direction, and the inner bottom wall of the sealing groove 7 is provided with screw holes 9 that match the fixing bolts 2. The inner bottom wall of the sealing groove 7 is provided with a plurality of positioning posts 8 along its circumferential direction. The bottom of the sealing ring plate 26 is provided with positioning grooves for the positioning posts 8 to be embedded, and the plurality of positioning posts 8 and the plurality of screw holes 9 are arranged alternately with each other; when in use, the sealing ring plate 26 can be quickly installed and positioned by the cooperation and connection between the positioning posts 8 and the positioning grooves. At the same time, the fixing bolts 2 are aligned with the screw holes 9, which makes it convenient to screw the fixing bolts 2 into the screw holes 9 to realize the installation of the sealing ring plate 26, and the arrangement of the two sealing ring plates 26 can further increase the stability of the rubber bushing body 1.

[0032] Specifically, when the rubber bushing body 1 is sleeved on the outside of the first metal shell 6, the multiple rubber strips 5 on the rubber bushing body 1 are respectively embedded in the corresponding limiting grooves 10, and then the external air head can be connected to the vent nozzle 4, and air is inflated into the first cavity 12 and the second cavity 11. The pressure inside the first cavity 12 increases, causing the rubber strip 5 to expand, thereby improving the tightness of the connection with the limiting groove 10. The pressure inside the second cavity 11 increases, which also causes the rubber bushing body 1 to expand, thereby improving the tightness of the connection with the inner wall of the second metal shell 3.

[0033] Due to the presence of the baffle 21, the magnetic force between the magnet C20 and the magnet D23 is greatly reduced or isolated, and when the magnet A17 and the magnet B18 are in contact with each other, the magnet C20 is located in the opening on the outer surface of the fixed box 13, so it is convenient to insert the rubber bushing body 1 into the interior of the second metal shell 3. Subsequently, the push rod 24 can be pushed to drive the baffle 21 to move, so that the baffle 21 is completely moved into the inner groove 25, that is, there is no obstacle between the magnet C20 and the magnet D23, and the magnetic force between the magnet C20 and the magnet D23 is restored, so that the limit column 19 moves and is embedded in the slot 22, realizing the card-connection limit effect, which can greatly increase the stability between the second metal shell 3 and the rubber bushing body 1, and the installation process is simple and convenient, with high practicality, and worthy of promotion and use.

[0034] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A rubber shock-absorbing bushing, comprising a rubber bushing body (1); characterized in that: The rubber bushing body (1) is sleeved on the outside of the first metal shell (6), and the outside of the rubber bushing body (1) is sleeved with a second metal shell (3), and the inner sides of the top and bottom of the second metal shell (3) are symmetrically provided with sealing grooves (7), and a sealing ring plate (26) is detachably installed in the sealing groove (7), and the inner surface of the rubber bushing body (1) is provided with a plurality of rubber strips (5), and the outer surface of the first metal shell (6) is provided with a limiting groove (10) for the rubber strip (5) to be embedded, and the upper and lower ends of the limiting groove (10) are through-set, and a first cavity (12) is provided inside the rubber strip (5), and a second cavity (11) corresponding to the first cavity (12) is provided inside the rubber bushing body (1), and the second cavity (11) is connected to the corresponding first cavity (12), and a vent nozzle (4) connected to the first cavity (12) is provided on the top of the rubber strip (5); Two sets of fixed boxes (13) are embedded in the outer surface of the rubber bushing body (1), and a limiting column (19) is slidably inserted into the outer surface of the fixing box (13). The inner wall of the second metal shell (3) is provided with a slot (22) for the front end of the limiting column (19) to be embedded. The inner end surface of the limiting column (19) is embedded with a magnet A (17), and the inner bottom wall of the fixing box (13) is embedded with a magnet B (18) that attracts the magnet A (17). The outer surface of the limiting column (19) near the magnet A (17) is symmetrically provided with a slider (16). The slider (16) is slidably sleeved on the outside of the guide rod (14). The guide rod (14) The outer portion is also provided with a shock-absorbing spring (15), the outer end surface of the limiting column (19) is embedded with a magnet C (20), the inner bottom wall of the slot (22) is embedded with a magnet D (23) that attracts the magnet C (20), the inner side wall of the slot (22) is provided with an inner groove (25), a baffle (21) is slidably provided in the inner groove (25), the inner bottom wall of the sealing groove (7) is provided with a plurality of through grooves corresponding to the inner groove (25), the through grooves are connected to the corresponding inner grooves (25), a push rod (24) is slidably provided in the through groove, the bottom end of the push rod (24) is connected to the baffle (21), and the top end of the push rod (24) extends to the outside of the through groove.

2. The rubber shock-absorbing bushing according to claim 1, characterized in that: A plurality of fixing bolts (2) are inserted into the sealing ring plate (26) at equal intervals along its circumferential direction; a screw hole (9) matching with the fixing bolt (2) is provided on the inner bottom wall of the sealing groove (7); a plurality of positioning columns (8) are provided on the inner bottom wall of the sealing groove (7) along its circumferential direction; a positioning groove for the positioning columns (8) to be embedded is provided at the bottom of the sealing ring plate (26); and the plurality of positioning columns (8) and the plurality of screw holes (9) are arranged alternately.

3. The rubber shock-absorbing bushing according to claim 2, characterized in that: When the magnet A (17) and the magnet B (18) are attached to each other, the magnet C (20) is located in the opening on the outer surface of the fixing box (13).

4. The rubber shock-absorbing bushing according to claim 3, characterized in that: The magnetic force between the magnet A (17) and the magnet B (18) is smaller than the magnetic force between the magnet C (20) and the magnet D (23).

5. The rubber shock-absorbing bushing according to claim 4, characterized in that: The plurality of rubber strips (5) and the plurality of fixing boxes (13) are alternately distributed along the circumferential direction of the surface of the rubber bushing body (1).

6. The rubber shock-absorbing bushing according to claim 1, characterized in that: The distance between the inner bottom walls of the two sealing grooves (7) is equal to the length of the rubber bushing body (1).

7. The rubber shock-absorbing bushing according to claim 1, characterized in that: The rubber strips (5) are arranged in a vertical direction, and a plurality of the rubber strips (5) are distributed at equal intervals along the circumferential direction of the inner surface of the rubber bushing body (1), and the rubber strips (5) and the rubber bushing body (1) are integrally formed.

8. The rubber shock-absorbing bushing according to claim 1, characterized in that: The two groups of fixing boxes (13) are symmetrically arranged on the upper and lower sides of the surface of the rubber bushing body (1). The number of fixing boxes (13) in each group is multiple and is evenly spaced along the circumferential direction of the outer surface of the rubber bushing body (1).

9. The rubber shock-absorbing bushing according to claim 1, characterized in that: The two guide rods (14) are fixedly arranged between the front and rear inner walls of the fixed box (13); one end of the shock-absorbing spring (15) is connected to the front inner wall of the fixed box (13) and the other end is connected to the surface of the slider (16); the length of the baffle (21) is greater than the width of the slot (22).

10. The rubber shock-absorbing bushing according to claim 1, characterized in that: A check valve is provided inside the vent nozzle (4), and a nozzle cap is provided on the outside of the vent nozzle (4) through a threaded sleeve.

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