Novel semi-nylon cam shaft structure
By designing hollow oil chambers, bowl plugs, grooves and limit block devices on the camshaft, combined with gears and sliders, self-lubricating is achieved, solving the problems of complex design and inconvenient lubrication in the prior art, and reducing costs and wear, improving production convenience and wear resistance.
Patent Information
- Application Number
- CN202421071061.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-16
Smart Images
Figure CN222276761U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of camshafts, in particular to a novel semi-nylon camshaft structure. Background Art
[0002] The camshaft transmits the circular motion of the crankshaft through the tappets, push rods, rocker arms and other parts, and finally converts it into the linear motion of the intake and exhaust valves, accurately controlling the opening and closing of the intake and exhaust valves. During the working process, the intake cam and exhaust cam in the camshaft are in direct contact with the bottom of the tappets in the engine, and the cam and tappets are lubricated by the splashing lubricating oil to ensure the lubrication between the two.
[0003] At present, most camshafts used in engines are solid steel structures, which are heavy and require bushings to be installed on the mounting support for lubrication and friction reduction. Oil channels and oil holes need to be opened on the bushings to provide lubricating oil to the camshafts through the oil channels and oil holes for lubrication. However, such an oil supply method also requires mounting parts for installing the camshafts. Such a design results in complex processing of various components and multiple processes, which is not conducive to production and manufacturing. Utility Model Content
[0004] The utility model aims to provide a novel semi-nylon camshaft structure to solve the problems of complex process, multiple procedures and disadvantages in production and manufacturing proposed in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a main shaft, a hollow oil cavity is penetrated through the left side of the main shaft, a bowl-shaped plug is provided at the left end of the hollow oil cavity, a plurality of grooves are provided on the outer side of the main shaft, a limit block device is installed in the inner cavity of the groove, an oil hole is penetrated through the bottom of the groove, a first slider is sleeved on the outer side of the main shaft, a gear sleeved on the outer side of the main shaft is connected to the right side of the first slider, a first cam sleeved on the outer side of the main shaft is provided on the right side of the gear, a second cam sleeved on the outer side of the main shaft is provided on the right side of the first cam, a third cam sleeved on the outer side of the main shaft is provided on the right side of the second cam, a fourth cam sleeved on the outer side of the main shaft is provided on the right side of the third cam, a second slider sleeved on the outer side of the main shaft is provided on the right side of the fourth cam, and a driving end inserted into the motor shaft is connected to the right side of the main shaft.
[0006] Preferably, a first bolt is connected to the left side of the bowl-shaped plug, and the first bolt passes through the bowl-shaped plug and is connected to the hollow oil chamber.
[0007] Preferably, the limit block device comprises a spring and a limit block, the bottom of the inner cavity of the groove is connected to the spring, and the upper side of the spring is connected to the limit block.
[0008] Preferably, the right sides of the gear, the first cam, the second cam, the third cam, the fourth cam and the second sliding block are provided with a first card slot and a second card slot, and the first card slot and the second card slot are matched with the limit block device.
[0009] Preferably, a screw hole is formed through the outer side of the first sliding block, a second bolt is installed in the inner cavity of the screw hole, and the second bolt passes through the screw hole and is connected to the main shaft.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1) In this scheme, the hollow oil cavity is set up, and the oil channel in the inner cavity of the hollow oil cavity uses the power generated by the rotation of the main shaft to flow the lubricating oil through the oil hole to the groove, and then flows to the surface of the main shaft through the groove for lubrication, thereby achieving oil self-lubrication. There is no need to install a bushing to reduce friction, and there is no need to install and arrange an oil channel separately. This not only simplifies the layout of the overall lubricating oil channel, but also reduces wear and reduces costs. The structure is simpler and easier to process.
[0012] 2) In this solution, through the setting of the limit block and the spring, when the limit block is subjected to force in the direction of the spring, the cam can pass through the limit ring and move to the specified position, and engage with the matching limit ring. After passing through the limit ring, the cam gives up the force and is reset by the spring;
[0013] 3) In this solution, the gear is set up. As one of the connecting parts on the main shaft, the torque it bears is relatively small. Therefore, the gear can reduce costs, improve wear resistance and extend service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the front-end structure of the utility model;
[0016] Figure 3 It is a schematic diagram of the left side cross-sectional structure of the utility model;
[0017] Figure 4 This is a schematic diagram of the front end cross-sectional structure of the utility model;
[0018] Figure 5 This is a schematic diagram of the structure of the limit block device of the utility model.
[0019] In the figure: 1 main shaft, 2 hollow oil chamber, 3 bowl-shaped plug, 4 groove, 5 limit block device, 6 first slider, 7 gear, 8 first cam, 9 second cam, 10 third cam, 11 fourth cam, 12 second slider, 13 driving end, 14 first bolt, 15 oil hole, 16 spring, 17 limit block, 18 first slot, 19 second slot, 20 screw hole, 21 second bolt. DETAILED DESCRIPTION
[0020] 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.
[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0022] Example:
[0023] See also Figure 1-5 The utility model provides a technical solution: a novel semi-nylon camshaft structure, comprising a main shaft 1, a hollow oil chamber 2 is penetrated and opened on the left side of the main shaft 1, a bowl-shaped plug 3 is arranged at the left end of the hollow oil chamber 2, and the hollow oil chamber 2 is sealed by the bowl-shaped plug 3, a plurality of grooves 4 are opened on the outside of the main shaft 1, a limit block device 5 is installed in the inner cavity of the groove 4, the limit block device 5 is composed of a spring 16 and a limit block 17, an oil hole 15 is penetrated and opened at the bottom of the groove 4, a first slider 6 is sleeved on the outside of the main shaft 1, a gear 7 sleeved on the outside of the main shaft 1 is connected to the right side of the first slider 6, a first cam 8 sleeved on the outside of the main shaft 1 is arranged on the right side of the gear 7, a second cam 9 sleeved on the outside of the main shaft 1 is arranged on the right side of the first cam 8, and a second cam 9 sleeved on the outside of the main shaft 1 is arranged on the right side of the second cam 9 A third cam 10 is sleeved on the outside of the main shaft 1, and a fourth cam 11 is sleeved on the outside of the main shaft 1 on the right side of the third cam 10. A second slider 12 is sleeved on the outside of the main shaft 1 on the right side of the fourth cam 11. The force is applied to the direction of the spring 16 through the limit block 17. The gear 7, the first cam 8, the second cam 9, the third cam 10, the fourth cam 11 and the second slider 12 respectively pass through the limit block 17 and move to the specified position. The right side of the main shaft 1 is connected to the driving end 13 inserted into the motor shaft. The power of the motor rotation drives the device to rotate through the driving end 13, and transmits its power to other components through the gear 7. When the device rotates, heat energy is generated. The heat energy softens the lubricating oil and flows to the limit block device 5 through the oil hole 15, thereby achieving oil self-lubrication.
[0024] Among them, the left side of the bowl-shaped plug 3 is connected to a first bolt 14, the first bolt 14 passes through the bowl-shaped plug 3 and is connected to the hollow oil chamber 2, the limit block device 5 includes a spring 16 and a limit block 17, the bottom of the inner cavity of the groove 4 is connected to a spring 16, the upper side of the spring 16 is connected to the limit block 17, the right side of the gear 7, the first cam 8, the second cam 9, the third cam 10, the fourth cam 11 and the second slider 12 are provided with a first slot 18 and a second slot 19, the first slot 18 and the second slot 19 are matched with the limit block device 5, the outer side of the first slider 6 is penetrated by a screw hole 20, the inner cavity of the screw hole 20 is installed with a second bolt 21, the second bolt 21 passes through the screw hole 20 and is connected to the main shaft 1.
[0025] Working principle: The hollow oil chamber 2 inside the main shaft 1 forms an oil passage. Lubricating oil is loaded into the hollow oil chamber 2 and sealed by a bowl-shaped plug 3. The first bolt 14 fixes the bowl-shaped plug 3 to the hollow oil chamber 2 to prevent the device from loosening and falling when rotating. Several grooves 4 are provided on the outside of the main shaft 1. The inner cavities of the several grooves 4 are all equipped with limit block devices 5. The limit block device 5 is composed of a spring 16 and a limit block 17. The limit block 17 is subjected to force in the direction of the spring 16. The gear 7, the first cam 8, the second cam 9, the third cam 10, the fourth cam 11 and the second slider 12 respectively pass through the limit block 17 and move to the specified position, releasing the force of the limit block 17 in the direction of the spring 16. The limit block 17 is respectively fixed with the first slot 18 and the second slot 19, the first slider 6 is close to the gear 7 and is fixedly connected to the main shaft 1 by the second bolt 21, and the driving end 13 is inserted into the rotating shaft of the motor. The power of the motor rotation drives the device to rotate through the driving end 13, and transmits its power to other components through the gear 7. When the device rotates, heat energy is generated, and the heat energy softens the lubricating oil and flows to the limit block device 5 through the oil hole 15, so as to achieve oil self-lubrication, without the need to add a bushing to reduce friction, and without the need to install and arrange an oil channel separately, which not only simplifies the layout of the overall lubricating oil channel, but also reduces wear and reduces costs. The structure is simpler and easier to process.
[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.
[0027] 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 novel semi-nylon camshaft structure, comprising a main shaft (1), characterized in that: A hollow oil chamber (2) is provided on the left side of the main shaft (1), a bowl-shaped plug (3) is provided at the left end of the hollow oil chamber (2), a plurality of grooves (4) are provided on the outside of the main shaft (1), a limit block device (5) is installed in the inner cavity of the groove (4), an oil hole (15) is provided on the bottom of the groove (4), a first slider (6) is provided on the outside of the main shaft (1), a gear (7) provided on the right side of the first slider (6) is provided on the outside of the main shaft (1), and a gear (7) provided on the right side of the gear (7) is provided on the outside of the main shaft (1) is provided with a first cam (8) on the outside of the main shaft (1), a second cam (9) is provided on the right side of the first cam (8) and is sleeved on the outside of the main shaft (1), a third cam (10) is provided on the right side of the second cam (9) and is sleeved on the outside of the main shaft (1), a fourth cam (11) is provided on the right side of the third cam (10) and is sleeved on the outside of the main shaft (1), a second slider (12) is provided on the right side of the fourth cam (11) and is sleeved on the outside of the main shaft (1), and a driving end (13) inserted into a motor shaft is connected to the right side of the main shaft (1).
2. A novel semi-nylon camshaft structure according to claim 1, characterized in that: A first bolt (14) is connected to the left side of the bowl-shaped plug (3), and the first bolt (14) passes through the bowl-shaped plug (3) and is connected to the hollow oil chamber (2).
3. A novel semi-nylon camshaft structure according to claim 1, characterized in that: The limit block device (5) comprises a spring (16) and a limit block (17); the bottom of the inner cavity of the groove (4) is connected to the spring (16); the upper side of the spring (16) is connected to the limit block (17).
4. A novel semi-nylon camshaft structure according to claim 1, characterized in that: The right sides of the gear (7), the first cam (8), the second cam (9), the third cam (10), the fourth cam (11) and the second slider (12) are all provided with a first slot (18) and a second slot (19), and the first slot (18) and the second slot (19) are both matched with the limit block device (5).
5. The novel semi-nylon camshaft structure according to claim 1 is characterized in that: A screw hole (20) is formed through the outer side of the first sliding block (6), a second bolt (21) is installed in the inner cavity of the screw hole (20), and the second bolt (21) passes through the screw hole (20) and is connected to the main shaft (1).