A camshaft connection adjustment assembly

Abstract

This invention relates to the field of automotive parts technology, and more particularly to a camshaft connection adjustment assembly. The technical solution includes: a camshaft assembly and multiple sets of cam assemblies rotatably connected to the outer surface of the camshaft assembly; further comprising: a connection limiting assembly slidably mounted on the outer surface of the camshaft assembly, the connection limiting assembly being disposed on both sides of the cam assembly. In this invention, the airbag ring deforms inward, causing the two sets of hollow ring frames to converge inward. The rubber bonding wall follows the hollow ring frames, reducing the contact area with the cam assembly. While the hollow ring frames reduce contact with the cam assembly, the concentrated air pressure increases the compression pressure per unit area, thus ensuring the stability of the cam assembly during rotation and preventing accelerated damage due to external forces when connected to automotive parts, thereby extending the service life of the cam.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a camshaft connection adjustment assembly. Background Technology

[0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valves. Although the camshaft rotates at half the speed of the crankshaft in a four-stroke engine (while in a two-stroke engine it rotates at the same speed), its speed is usually still very high, and it needs to withstand a large torque. Therefore, the design of the camshaft places high demands on its strength and support, and its material is generally high-quality alloy steel or alloy steel. Because the valve movement pattern affects the power and operating characteristics of an engine...

[0003] The patent document CN115419480B discloses a gear and camshaft connection mechanism, including a splined plug, an internal splined gear, a camshaft, and a pin retaining ring. The internal splined gear is installed at one end of the camshaft. The splined plug is installed at the end of the camshaft via the internal splined gear. The pin retaining ring is installed on the internal splined gear and the splined plug. The outer end face of the splined plug has a concave splined groove in the circumferential direction, and the other side of the flange of the splined plug has several first semi-circular through holes in the circumferential direction. The thread direction of the splined plug is opposite to the rotation direction of the camshaft. The gear and camshaft connection mechanism of the present invention improves the operability and reliability of the laboratory gear and camshaft connection device, reduces the complexity of the original gear and camshaft connection method, reduces the number of parts of the connection device, saves economic and time costs in the engine performance test process, and improves the reliability of engine valve train assembly and disassembly.

[0004] The above devices have the following problems when in use:

[0005] Since the camshaft is connected to multiple cams, and the camshaft is one of the most frequently used parts in the engine, it needs to have good wear resistance. Therefore, the above-mentioned device reduces the installation steps in terms of cam and gear installation, and ignores the long-term use of the camshaft.

[0006] Therefore, this application proposes a camshaft connection adjustment assembly. Summary of the Invention

[0007] The purpose of this invention is to address the problem in the prior art that camshafts are used too frequently in engines and have poor wear resistance, and to propose a camshaft connection adjustment assembly.

[0008] The technical solution of the present invention: A camshaft connection adjustment assembly, comprising a camshaft assembly and multiple sets of cam assemblies rotatably connected to the outer surface of the camshaft assembly, and further comprising:

[0009] A connecting limiting component is slidably mounted on the outer surface of the camshaft assembly, and the connecting limiting component is disposed on both sides of the cam assembly;

[0010] A rubber-fitting wall is attached to the outer surface of the cam assembly for clamping;

[0011] A hollow ring frame is fixedly installed on the outer surface of the rubber bonding wall;

[0012] A concave arc-shaped spring ring is inserted into the interior of a hollow ring frame, with the arc surface of the concave arc-shaped spring ring facing the interior of the hollow ring frame.

[0013] An airbag ring is fixedly installed on the arc-shaped inner wall of a concave arc-shaped spring ring. When the airbag ring is under pressure, the rubber bonding wall expands outward along the surface of the cam assembly through the pressure transmission of the hollow ring frame and fits against the outer surface of the cam assembly.

[0014] Optionally, it also includes a limiting block, which is fixedly installed at the end of the hollow ring frame away from the rubber bonding wall, and is rotatably installed inside the connecting limiting assembly.

[0015] Optionally, a positioning auxiliary ring is fixedly installed at one end of the limiting block, the positioning auxiliary ring is attached to the outer surface of the camshaft assembly, a mating sleeve plate is fixedly connected at one end of the connecting limiting assembly, a mating collar is inserted into one end of the mating sleeve plate, a small spring is fixedly connected between the mating sleeve plate and the mating collar, the inner wall of the mating collar is attached to the outer surface of the mating sleeve plate, and multiple sets of oil leakage holes are formed on the surface of the mating collar.

[0016] Optionally, a detachable rubber component is fixedly installed inside the connecting limiting component. The detachable rubber component has an internal rubber groove. A sponge brush component is fixedly connected to the top of the detachable rubber component, and the sponge brush component is attached to the outer surface of the cam component.

[0017] Optionally, a piston rod is fixedly connected inside the built-in rubber groove frame, an oil injection component is fixedly connected to the top of the piston rod, an injection head is fixedly connected to one end of the oil injection component, a flow-through tube is fixedly installed between the oil leakage hole and the detachable rubber component, and the injection head is aligned with the output port of the flow-through tube.

[0018] Optionally, the positioning auxiliary ring has multiple sets of guide rails slidably connected inside, and the multiple sets of guide rails are fixedly installed inside the camshaft assembly. One end of the camshaft assembly is provided with an auxiliary gear, and the end of the camshaft assembly away from the auxiliary gear is provided with a positioning groove.

[0019] Optionally, one end of the positioning auxiliary ring is rotatably connected to multiple sets of interlocking arc-shaped brackets through a slot. The multiple sets of interlocking arc-shaped brackets are respectively fixedly installed with a second positioning rod, a locking block and a first positioning rod. The first positioning rod and the second positioning rod are respectively set at both ends of the locking block. Long springs are fixedly connected to the outer surfaces of the second positioning rod and the first positioning rod.

[0020] Optionally, one end of the first positioning rod is fixedly connected to a first rack assembly, the bottom end of the first rack assembly is slidably connected to a distance adjustment frame, the locking block is fixedly installed on the inner wall of the distance adjustment frame, the top end of the second positioning rod is fixedly connected to a second rack assembly, the second rack assembly is slidably connected inside the distance adjustment frame, a rotating shaft is rotatably connected inside the distance adjustment frame, a gear assembly is fixedly connected to the outer surface of the rotating shaft, the gear assembly is meshed with the second rack assembly and the first rack assembly respectively, and a motor assembly is fixedly connected to one end of the rotating shaft that passes through the gear assembly and the distance adjustment frame, the motor assembly is fixedly installed on the outer surface of the distance adjustment frame.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] In this invention, the airbag ring deforms inward, causing the two sets of hollow ring frames to converge inward. The rubber bonding wall follows the hollow ring frames to reduce the contact area with the cam assembly. The hollow ring frames reduce the contact with the cam assembly, but due to the concentrated air pressure, the single-area compression pressure increases, thereby ensuring the stability of the cam assembly during rotation and preventing accelerated damage due to external forces when connected to automotive parts, thus extending the service life of the cam.

[0023] In the next part, the piston rod squeezes the oil injection component, injecting the lubricating oil inside the oil injection component from the injection head into the sponge brush component. As the sponge brush component is squeezed, a large amount of lubricating oil in the sponge moves along the cam component towards the insertion collar, thereby improving the stability of the cam rotation and reducing the wear caused by friction on the cam.

[0024] Furthermore, relying on the connected snap-fit ​​arc-shaped frame, the positioning auxiliary ring moves to the specified position. The positioning auxiliary ring drives the connecting limit assembly to slide along the outer surface of the guide rail to the appropriate position to accommodate the installation of different automotive parts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the camshaft connection adjustment assembly of the present invention;

[0026] Figure 2 A schematic diagram of the distance adjustment frame of the present invention is provided;

[0027] Figure 3 A schematic diagram of the sponge brush assembly of the present invention is provided;

[0028] Figure 4 A schematic diagram of the cam assembly of the present invention is provided;

[0029] Figure 5 A schematic diagram of the positioning auxiliary ring of the present invention is provided;

[0030] Figure 6 The present invention is given Figure 5 Enlarged view of the central A region;

[0031] Figure 7 A schematic diagram of the structure of the rubber-bonded wall of the present invention is provided.

[0032] Reference numerals: 1. Camshaft assembly; 2. Positioning groove; 3. Auxiliary gear; 4. Cam assembly; 5. Connecting limit assembly; 6. First positioning rod; 7. Second positioning rod; 8. Locking block; 9. Engaging arc-shaped frame; 10. Positioning auxiliary ring; 11. Distance adjustment frame; 12. Motor assembly; 13. Gear assembly; 14. Rotating shaft; 15. First rack assembly; 16. Second rack assembly; 17. Long spring; 18. Injection head; 19. Limiting block; 20. Hollow ring frame; 21. Airbag ring; 22. Rubber bonding wall; 23. Insertion collar; 24. Insertion sleeve plate; 25. Small spring; 26. Detachable rubber assembly; 27. Sponge brush assembly; 28. Guide rail rod; 29. ​​Piston rod; 30. Oil injection assembly; 31. Built-in rubber groove frame; 32. Oil leakage hole; 33. Concave arc-shaped spring ring. Detailed Implementation

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] like Figures 1-6As shown, the camshaft connection adjustment assembly proposed in this invention includes a camshaft assembly 1 and multiple sets of cam assemblies 4 rotatably connected to the outer surface of the camshaft assembly 1. It also includes a connection limiting assembly 5 slidably mounted on the outer surface of the camshaft assembly 1, with the connection limiting assembly 5 disposed on both sides of the cam assemblies 4; a rubber bonding wall 22, which is attached to the outer surface of the cam assemblies 4 for clamping; a hollow ring frame 20, which is fixedly mounted on the outer surface of the rubber bonding wall 22; a concave arc-shaped spring ring 33, which is inserted into the hollow ring frame 20 with its arc surface facing inward; and an airbag ring 21, which is fixedly mounted on the arc-shaped inner wall of the concave arc-shaped spring ring 33. When the airbag ring 21 is under pressure, the rubber bonding wall 22 expands outward along the surface of the cam assembly 4 through the pressure transmission from the hollow ring frame 20, thus bonding with the outer surface of the cam assembly 4.

[0036] In this embodiment, the camshaft connection adjustment assembly also includes a limiting block 19. The limiting block 19 can rotate with the cam assembly 4 under the limiting of the connecting limiting assembly 5. The limiting block 19 is fixedly installed at the end of the hollow ring frame 20 away from the rubber bonding wall 22. The limiting block 19 is rotatably installed inside the connecting limiting assembly 5. When the cam assembly 4 vibrates, the hollow ring frame 20 is squeezed. The hollow ring frame 20 bends inward by squeezing the concave arc spring ring 33. The airbag ring 21 then deforms inward, causing the two sets of hollow ring frames 20 to concentrate inward. The rubber bonding wall 22 reduces the contact area with the cam assembly 4 along with the hollow ring frame 20. The hollow ring frame 20 reduces the contact with the cam assembly 4. However, due to the concentrated air pressure, the single-area squeezing pressure increases, thereby ensuring the stability of the cam assembly 4 when rotating. This avoids accelerated damage due to external forces when connected to automotive parts, thus extending the service life of the cam.

[0037] Example 2

[0038] like Figures 6-7As shown, based on Embodiment 1, a positioning auxiliary ring 10 is fixedly installed at one end of the limiting block 19. The positioning auxiliary ring 10 is attached to the outer surface of the camshaft assembly 1. A mating sleeve 24 is fixedly connected to one end of the limiting assembly 5. A mating collar 23 is inserted into one end of the mating sleeve 24. A small spring 25 is fixedly connected between the mating sleeve 24 and the mating collar 23. The inner wall of the mating collar 23 is attached to the outer surface of the mating sleeve 24. Multiple sets of oil leakage holes 32 are opened on the surface of the mating collar 23. Due to the different thicknesses of the cams, when the cams are installed, the cam assembly 4 squeezes the mating collar 23. The mating collar 23 moves along the outer surface of the mating sleeve 24. With the small spring 25 limiting the movement of the mating sleeve 24, the mating sleeve 24 and the mating collar 23 are adjusted to a suitable distance, thereby installing cams of different thicknesses and improving the practicality of the camshaft.

[0039] In this embodiment, a detachable rubber assembly 26 is fixedly installed inside the connecting limiting component 5. The detachable rubber assembly 26 has an internal rubber groove 31. A sponge brush assembly 27 is fixedly connected to the top of the detachable rubber assembly 26. The sponge brush assembly 27 is attached to the outer surface of the cam assembly 4. An input pipe connected to the check valve is opened on the surface of the detachable rubber assembly 26. Lubricating oil is injected into the oil injection component 30 through the input pipe.

[0040] A piston rod 29 is fixedly connected inside the built-in rubber groove bracket 31. An oil injection component 30 is fixedly connected to the top of the piston rod 29. An injection head 18 is fixedly connected to one end of the oil injection component 30. A flow-through tube is fixedly installed between the oil leakage hole 32 and the detachable rubber component 26. The oil leakage hole 32 can be an open hole extending through to the surface of the cam assembly 4, or it can be a round hole, depending on actual requirements. The injection head 18 is aligned with the output port of the flow-through tube. When the cam assembly 4 rotates at high speed and connects to the intake or exhaust assembly, the intake or exhaust assembly rotates at high speed in conjunction with the acceleration of the vehicle. The cam assembly 4 vibrates during rotation, and the vibration frequency changes according to the vehicle speed; the faster the vehicle speed, the higher the frequency. Meanwhile, the sponge brush assembly 27, in its normal state, adheres to the convex... The wheel assembly 4 acts as a buffer for the rotation of the cam assembly 4. As the cam assembly 4 vibrates and squeezes the sponge brush assembly 27, the sponge brush assembly 27 presses down on the detachable rubber assembly 26. The rubber part at the top of the detachable rubber assembly 26 is compressed, and the built-in rubber groove frame 31 is under compression. The piston rod 29 squeezes the oil injection assembly 30, and the lubricating oil inside the oil injection assembly 30 is injected from the injection head 18 into the sponge brush assembly 27. As the sponge brush assembly 27 is squeezed, a large amount of lubricating oil in the sponge moves along the cam assembly 4 toward the insertion collar 23. The lubricating oil moving toward the insertion collar 23 flows through multiple sets of oil leakage holes 32 to the connection between the cam assembly 4 and the camshaft assembly 1, thereby improving the stability of the cam rotation and reducing the wear caused by friction on the cam.

[0041] Example 3

[0042] like Figures 1-5 As shown, based on the above embodiment 1 or 2, the positioning auxiliary ring 10 has multiple sets of guide rails 28 slidably connected inside. The connecting limiting component 5 can slide along the outer surface of the multiple sets of guide rails 28. The multiple sets of guide rails 28 reduce the shaking of the connecting limiting component 5 when sliding, making the connecting limiting component 5 more stable when moving. The multiple sets of guide rails 28 are fixedly installed inside the camshaft assembly 1. One end of the camshaft assembly 1 is provided with an auxiliary gear 3. Since the auxiliary gear 3 can be rotatably connected to the outer surface of the camshaft assembly 1 and cooperate with other gear assemblies of the engine, the auxiliary gear 3 can also be fixedly installed on the outer surface of the camshaft assembly 1. The auxiliary gear 3 drives the camshaft assembly 1 to rotate together through the meshing of other gear assemblies of the engine. The end of the camshaft assembly 1 away from the auxiliary gear 3 is provided with a positioning groove 2. The positioning groove 2 is used to install other components.

[0043] In this embodiment, one end of the positioning auxiliary ring 10 is rotatably connected to multiple sets of interlocking arc-shaped brackets 9 through a slot. The multiple sets of interlocking arc-shaped brackets 9 are respectively fixedly mounted with a second positioning rod 7, a locking block 8, and a first positioning rod 6. The first positioning rod 6 and the second positioning rod 7 are respectively located at both ends of the locking block 8. Long springs 17 are fixedly connected to the outer surfaces of the second positioning rod 7 and the first positioning rod 6. The first positioning rod 6 and the second positioning rod 7 slide along the inside of the long spring 17, relying on the connected interlocking arc-shaped brackets 9 to move the positioning auxiliary ring 10 to the designated position. The positioning auxiliary ring 10 then drives the connecting... The connecting limit assembly 5 slides along the outer surface of the guide rail 28 to a suitable position to accommodate the installation of different automotive parts. For example, if the customer needs to replace the engine with a more powerful one or to configure a higher exhaust or intake assembly to improve the combustible mixture, the connecting limit assembly 5 connected to the first positioning rod 6 and the second positioning rod 7 can change the corresponding position. As for the connection to the locking block 8, since the central position of the locking block 8 is fixedly installed on the inner wall of the distance adjustment bracket 11, and since the connecting limit assembly 5 connected to the locking block 8 is in the central position, the cam assembly 4 connected to the connecting limit assembly 5 here needs to be fixed and cannot be moved arbitrarily.

[0044] One end of the first positioning rod 6 is fixedly connected to a first rack assembly 15. The bottom end of the first rack assembly 15 is slidably connected to a distance adjustment frame 11. A locking block 8 is fixedly installed on the inner wall of the distance adjustment frame 11. The top end of the second positioning rod 7 is fixedly connected to a second rack assembly 16. The second rack assembly 16 is slidably connected inside the distance adjustment frame 11. A rotating shaft 14 is rotatably connected inside the distance adjustment frame 11. A gear assembly 13 is fixedly connected to the outer surface of the rotating shaft 14. The gear assembly 13 is meshed with the second rack assembly 16 and the first rack assembly 15 respectively. One end of the rotating shaft 14, passing through the gear assembly 13 and the distance adjustment frame 11, is fixedly connected to a motor assembly 12. The motor assembly 12 is fixedly installed on... On the outer surface of the distance adjustment frame 11, the motor assembly 12 serves as the drive, driving the gear assembly 13 and the rotating shaft 14 to rotate together. As the gear assembly 13 meshes with the second rack assembly 16 and the first rack assembly 15, the second rack assembly 16 drives the second positioning rod 7, and the first rack assembly 15 drives the first positioning rod 6 to move relative to each other. The second positioning rod 7 and the first positioning rod 6 move along the compression direction of the long spring 17, causing the second positioning rod 7 and the first positioning rod 6 to mesh with the second rack assembly 16 and the first rack assembly 15 respectively, and be precisely positioned to the moving position, so that each set of connecting limit components 5 can move to the specified position.

[0045] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A camshaft connection adjustment assembly, comprising a camshaft assembly (1) and a plurality of cam assemblies (4) rotatably connected to the outer surface of the camshaft assembly (1), characterized in that, Also includes: A connecting limiting component (5) is slidably mounted on the outer surface of the camshaft assembly (1), and the connecting limiting component (5) is disposed on both sides of the cam assembly (4); A rubber-fitting wall (22) is attached to the outer surface of the cam assembly (4) for clamping; Hollow ring frame (20), the hollow ring frame (20) is fixedly installed on the outer surface of the rubber bonding wall (22); A concave arc-shaped spring ring (33) is inserted into the interior of a hollow ring frame (20) with the arc surface of the concave arc-shaped spring ring (33) facing the interior of the hollow ring frame (20). Airbag ring (21), the airbag ring (21) is fixedly installed on the arc-shaped inner wall of the concave arc-shaped spring ring (33). The rubber bonding wall (22) is in an outward expansion state along the surface of the cam assembly (4) and is bonded to the outer surface of the cam assembly (4) through the pressure transmission of the hollow ring frame (20) under the pressure state of the airbag ring (21).

2. The camshaft connection adjustment assembly according to claim 1, characterized in that, It also includes a limiting block (19), which is fixedly installed at one end of the hollow ring frame (20) away from the rubber bonding wall (22) and is rotatably installed inside the connecting limiting assembly (5).

3. The camshaft connection adjustment assembly according to claim 2, characterized in that, One end of the limiting block (19) is fixedly installed with a positioning auxiliary ring (10), which is attached to the outer surface of the camshaft assembly (1). One end of the connecting limiting assembly (5) is fixedly connected with a mating sleeve plate (24), and one end of the mating sleeve plate (24) is inserted with a mating collar (23). A small spring (25) is fixedly connected between the mating sleeve plate (24) and the mating collar (23). The inner wall of the mating collar (23) is attached to the outer surface of the mating sleeve plate (24), and the surface of the mating collar (23) has multiple sets of oil leakage holes (32).

4. The camshaft connection adjustment assembly according to claim 3, characterized in that, The connecting limiting component (5) is internally fixedly installed with a detachable rubber component (26), the detachable rubber component (26) is internally provided with a built-in rubber groove frame (31), the top of the detachable rubber component (26) is fixedly connected with a sponge brush component (27), and the sponge brush component (27) is attached to the outer surface of the cam component (4).

5. A camshaft connection adjustment assembly according to claim 4, characterized in that, A piston rod (29) is fixedly connected inside the built-in rubber groove frame (31). An oil injection assembly (30) is fixedly connected to the top of the piston rod (29). An injection head (18) is fixedly connected to one end of the oil injection assembly (30). A flow-through tube is fixedly installed between the oil leakage hole (32) and the detachable rubber assembly (26). The injection head (18) is aligned with the output port of the flow-through tube.

6. A camshaft connection adjustment assembly according to claim 3, characterized in that, The positioning auxiliary ring (10) is internally connected to multiple sets of guide rods (28), and the multiple sets of guide rods (28) are fixedly installed inside the camshaft assembly (1). One end of the camshaft assembly (1) is provided with an auxiliary gear (3), and the end of the camshaft assembly (1) away from the auxiliary gear (3) is provided with a positioning groove (2).

7. A camshaft connection adjustment assembly according to claim 6, characterized in that, One end of the positioning auxiliary ring (10) is rotatably connected to multiple sets of snap-fit ​​arc-shaped strips (9) through a slot. The multiple sets of snap-fit ​​arc-shaped strips (9) are respectively fixedly installed with a second positioning rod (7), a locking block (8) and a first positioning rod (6). The first positioning rod (6) and the second positioning rod (7) are respectively set at both ends of the locking block (8). The outer surfaces of the second positioning rod (7) and the first positioning rod (6) are fixedly connected with long springs (17).

8. A camshaft connection adjustment assembly according to claim 7, characterized in that, One end of the first positioning rod (6) is fixedly connected to a first rack assembly (15), and the bottom end of the first rack assembly (15) is slidably connected to a distance adjustment frame (11). The locking block (8) is fixedly installed on the inner wall of the distance adjustment frame (11). The top end of the second positioning rod (7) is fixedly connected to a second rack assembly (16), and the second rack assembly (16) is slidably connected inside the distance adjustment frame (11). The inside of the distance adjustment frame (11) is rotatably connected to a rotating shaft (14), and the outer surface of the rotating shaft (14) is fixedly connected to a gear assembly (13). The gear assembly (13) is meshed with the second rack assembly (16) and the first rack assembly (15) respectively. One end of the rotating shaft (14) that passes through the gear assembly (13) and the distance adjustment frame (11) is fixedly connected to a motor assembly (12), and the motor assembly (12) is fixedly installed on the outer surface of the distance adjustment frame (11).

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