Variable intake and exhaust timing chain wheel

Abstract

The utility model discloses a variable intake and exhaust timing chain wheel, and relates to the field of automobiles, the variable intake and exhaust timing chain wheel comprises a main chain wheel assembly and two auxiliary chain wheel mechanisms mounted on the main chain wheel assembly, the main chain wheel assembly comprises a main chain wheel, and the outer wall of one side of the main chain wheel is fixedly connected with a mounting pipe for mounting the auxiliary chain wheel mechanisms; the auxiliary chain wheel mechanism comprises an auxiliary chain wheel connected to the installation pipe in a sleeving mode, and three fixing assemblies distributed at equal intervals are installed on the inner wall of the auxiliary chain wheel. The two auxiliary chain wheel mechanisms are arranged on the main chain wheel assembly, the multiple fixing assemblies are arranged in the auxiliary chain wheels in the auxiliary chain wheel mechanisms, and the fixing assemblies are matched with the mounting grooves in the mounting pipes, so that the auxiliary chain wheels are conveniently fixed to the mounting pipes, and the auxiliary chain wheels are conveniently and rapidly disassembled and assembled through the arrangement of the fixing assemblies; the problem that parts of an existing integrated timing chain wheel are inconvenient to replace is solved.

Description

Technical Field

[0001] This application relates to the field of automobiles, and in particular to a variable intake and exhaust timing sprocket. Background Art

[0002] The valve timing mechanism of an engine is responsible for supplying the fresh air necessary for gasoline combustion in the cylinder and discharging the exhausted gas after combustion. The main function of the valve timing mechanism is to open and close the intake and exhaust valves of each cylinder within a certain time limit, so as to realize the whole process of air exchange and supply in the engine cylinder. The valve lift is used as the opening angle, and the valve timing sprocket mechanism is used as the opening time. The intake and exhaust volumes per unit time are determined by the valve lift and the valve timing sprocket mechanism.

[0003] Existing variable intake timing sprockets all drive the chain through multiple sprockets with different diameters. However, the existing sprockets are all integrated mechanisms. Once a certain sprocket is damaged, the whole sprocket needs to be replaced, which leads to waste of sprocket materials. Utility Model Content

[0004] In order to solve the problem that the existing integral structure of the timing sprocket needs to be replaced as a whole when damaged, this application provides a variable intake and exhaust timing sprocket.

[0005] A variable intake and exhaust timing sprocket provided by this application adopts the following technical solution:

[0006] A variable intake and exhaust timing sprocket includes a main sprocket assembly and two auxiliary sprocket mechanisms installed on the main sprocket assembly. The main sprocket assembly includes a main sprocket, and an installation pipe for installing the auxiliary sprocket mechanism is fixedly connected to the outer wall of one side of the main sprocket. The auxiliary sprocket mechanism includes an auxiliary sprocket sleeved on the installation pipe, and three fixing components are installed on the inner wall of the auxiliary sprocket at equal distances. The fixing component includes a fixing seat fixedly connected to the inner wall of the auxiliary sprocket, and an installation cavity is opened on the inner wall of the fixing seat. Openings are opened on both inner walls of the installation cavity, and pressing seats are slidably connected to the inner walls of the two openings. A driving component for driving the two pressing seats to act is arranged on the inner wall of the installation cavity. Three installation grooves are opened on the outer wall of the installation pipe at equal distances, and the fixing seat is slidably connected to the inner wall of the installation groove. The driving component includes a bidirectional screw rod rotatably connected to both inner walls of the installation cavity, and two symmetrically arranged threaded sleeves are screwed on the outer wall of the bidirectional screw rod. Two supporting plates are rotatably connected to the outer walls of both sides of the two threaded sleeves, and one ends of the four supporting plates are respectively rotatably connected to the two pressing seats.

[0007] By adopting the above technical solution, a timing sprocket is formed by combining the main sprocket assembly and two auxiliary sprocket mechanisms. Three fixing components are arranged in the auxiliary sprocket. The arrangement of the fixing components facilitates the disassembly of the auxiliary sprocket from the mounting tube on the driving sprocket assembly, and is convenient for replacing the auxiliary sprocket when it is damaged. The two openings on the fixing seat facilitate the sliding installation of the pressing seat. The arrangement of the driving component facilitates the adjustment of the positions of the two pressing seats. The pressing seat presses against the inner wall of the mounting groove, thereby facilitating the fixing of the fixing seat in the mounting groove. The arrangement of the installation cavity facilitates the rotational installation of the bidirectional screw. When the bidirectional screw rotates, it is convenient to drive the two threaded sleeves to move. When the two threaded sleeves move, it is convenient to drive the support plate to pull the pressing seat to move.

[0008] The midpoint of the bidirectional screw is rotatably connected with an auxiliary seat, and the auxiliary seat is fixedly connected to the inner wall of the installation cavity.

[0009] By adopting the above technical solution, the arrangement of the auxiliary seat facilitates the auxiliary support of the bidirectional screw.

[0010] Both outer walls of the auxiliary seat are fixedly connected with mounting rods, and the two mounting rods are respectively slidably connected in the two pressing seats. Springs are sleeved on the outer walls of the two mounting rods.

[0011] By adopting the above technical solution, the auxiliary seat facilitates the installation of the two mounting rods. The arrangement of the two mounting rods facilitates the installation of the springs, and the arrangement of the mounting rods facilitates the restriction of the sliding track of the pressing seat.

[0012] A circular groove is formed on one outer wall of the fixing seat, and a rotating part connected to the bidirectional screw is rotatably connected to the inner wall of the circular groove.

[0013] By adopting the above technical solution, the rotating part facilitates the rotation of the bidirectional screw, and the rotating part facilitates the driving with a socket wrench.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. In the present application, two auxiliary sprocket mechanisms are arranged on the main sprocket assembly. Multiple fixing components are arranged in the auxiliary sprocket of the auxiliary sprocket mechanism. The cooperation between the fixing components and the mounting groove on the mounting tube facilitates the fixing of the auxiliary sprocket on the mounting tube. The arrangement of the fixing components facilitates the quick disassembly and assembly of the auxiliary sprocket, solving the problem that the existing integral timing sprocket is inconvenient for replacing parts;

[0016] 2. In the present application, when the rotating part drives the bidirectional screw to rotate, the bidirectional screw drives the two threaded sleeves to move when rotating. When the threaded sleeves move, it is convenient to cooperate with the support plate to drive the two pressing seats to press against the inner wall of the mounting groove, thereby facilitating the fixing of the fixing seat on the mounting tube. Description of the Drawings

[0017] Figure 1 This is a schematic diagram of the overall structure of a variable intake and exhaust timing sprocket according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram mainly showing the structure of the main sprocket assembly according to an embodiment of the present application;

[0019] Figure 3 This is a schematic diagram mainly showing the structure of the auxiliary sprocket mechanism according to an embodiment of the present application;

[0020] Figure 4 This is a schematic diagram mainly showing the sectional structure of the fixing component according to an embodiment of the present application;

[0021] Reference numerals: 1, main sprocket assembly; 2, auxiliary sprocket mechanism; 3, main sprocket; 4, mounting tube; 5, mounting groove; 6, auxiliary sprocket; 7, fixing component; 8, circular groove; 9, rotating part; 10, pressing seat; 11, bidirectional screw; 12, threaded sleeve; 13, support plate; 14, auxiliary seat; 15, mounting rod; 16, spring; 17, driving component; 18, fixing seat; 19, mounting cavity. Detailed Description of the Embodiment

[0022] The following will further elaborate on the present application in conjunction with the attached Figures 1-4 drawings.

[0023] An embodiment of the present application discloses a variable intake and exhaust timing sprocket.

[0024] Referring to Figures 1-3 , a variable intake and exhaust timing sprocket includes a main sprocket assembly 1 and two auxiliary sprocket mechanisms 2 mounted on the main sprocket assembly 1;

[0025] Referring to Figure 2 , the main sprocket assembly 1 includes a main sprocket 3, and an outer wall of one side of the main sprocket 3 is fixedly connected with a mounting tube 4 for mounting the auxiliary sprocket mechanism 2. Three equally spaced mounting grooves 5 are formed on an outer wall of the mounting tube 4,

[0026] During use, the mounting tube 4 on the main sprocket 3 facilitates the installation of the auxiliary sprocket mechanism 2, and the arrangement of the mounting grooves 5 facilitates restricting the rotation of the auxiliary sprocket mechanism 2 on the mounting tube 4.

[0027] Referring to Figures 3-4 , the auxiliary sprocket mechanism 2 mounted on the mounting tube 4 includes an auxiliary sprocket 6 sleeved on the mounting tube 4, and three equally spaced fixing components 7 are installed on an inner wall of the auxiliary sprocket 6,

[0028] Through the three fixing components 7 on the auxiliary sprocket 6, it is convenient to fix the auxiliary sprocket 6 on the mounting tube 4.

[0029] Reference Figure 4 As shown in Figure 4 , the fixing component 7 for assisting in the installation of the auxiliary sprocket 6 includes a fixing seat 18 fixedly connected to the inner wall of the auxiliary sprocket 6. An installation cavity 19 is formed in the inner wall of the fixing seat 18. Openings are formed in both inner walls of the installation cavity 19, and a pressing seat 10 is slidably connected to the inner walls of both openings. A driving component 17 for driving the two pressing seats 10 to act is arranged on the inner wall of the installation cavity 19. The fixing seat 18 is slidably connected to the inner wall of the installation groove 5.

[0030] During use, the installation cavity 19 facilitates the installation of the driving component 17. The driving component 17 facilitates driving the two pressing seats 10 to press in the installation groove 5, thereby ensuring the stability of the auxiliary sprocket 6 and preventing it from shaking during operation.

[0031] Reference Figure 4 As shown in Figure 4 , the driving component 17 for adjusting the actions of the two pressing seats 10 includes a bidirectional screw 11 rotatably connected to the inner walls on both sides of the installation cavity 19. Two symmetrically arranged threaded sleeves 12 are screwed on the outer wall of the bidirectional screw 11. Two supporting plates 13 are rotatably connected to the outer walls on both sides of the two threaded sleeves 12. One ends of the four supporting plates 13 are respectively rotatably connected to the two pressing seats 10. The midpoint of the bidirectional screw 11 is rotatably connected to an auxiliary seat 14, and the auxiliary seat 14 is fixedly connected to the inner wall of the installation cavity 19. Installation rods 15 are fixedly connected to the outer walls on both sides of the auxiliary seat 14, and the two installation rods 15 are respectively slidably connected in the two pressing seats 10. Springs 16 are sleeved on the outer walls of the two installation rods 15. A circular groove is formed in one outer wall of the fixing seat 18, and a rotating part 9 connected to the bidirectional screw 11 is rotatably connected to the inner wall of the circular groove.

[0032] During use, the rotating part 9 facilitates driving the bidirectional screw 11 to rotate. The rotating part 9 facilitates cooperation with a socket wrench for driving. When the bidirectional screw 11 rotates, it facilitates driving the two threaded sleeves 12 to move. When the two threaded sleeves 12 move, it facilitates driving the supporting plates 13 to pull the pressing seats 10 to move. The auxiliary seat 14 facilitates the installation of the two installation rods 15. The arrangement of the two installation rods 15 facilitates the installation of the springs 16. The arrangement of the installation rods 15 facilitates restricting the sliding track of the pressing seats 10.

[0033] The implementation principle of the variable intake and exhaust timing sprocket in the embodiment of the present application is as follows: During use, when the auxiliary sprocket mechanism 2 is damaged and needs to be replaced, during replacement, a socket wrench is sleeved on the rotating part 9. When the rotating part 9 rotates, it directly drives the bidirectional screw 11 to rotate. When the bidirectional screw 11 rotates, it drives the two threaded sleeves 12 to move towards or away from each other. When the two threaded sleeves 12 move away from each other, it facilitates cooperating with the supporting plates 13 to pull the two pressing seats 10 into the installation cavity 19. When the pressing seats 10 are not in contact with the installation groove 5, the auxiliary sprocket 6 can be disassembled from the installation pipe 4.

[0034] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A variable intake and exhaust timing sprocket, comprising a main sprocket assembly (1) and two auxiliary sprocket mechanisms (2) mounted on the main sprocket assembly (1), characterized in that: The main sprocket assembly (1) comprises a main sprocket (3), and a mounting tube (4) for mounting an auxiliary sprocket mechanism (2) is fixedly connected to an outer wall of one side of the main sprocket (3), the auxiliary sprocket mechanism (2) comprises an auxiliary sprocket (6) sleeved on the mounting tube (4), and the inner wall of the auxiliary sprocket (6) is mounted with three fixing assemblies (7) distributed at equal distances, the fixing assembly (7) comprises a fixing seat (18) fixedly connected to the inner wall of the auxiliary sprocket (6), and the inner wall of the fixing seat (18) is provided with a mounting cavity (19), the inner walls of both sides of the mounting cavity (19) are provided with openings, and the inner walls of the two openings are slidably connected with a pressing seat (10), and the fixing seat (7) is provided with a fixing seat (18) and a fixing seat (19) arranged on the inner wall of the fixing seat (18). The inner wall of the mounting cavity (19) is provided with a driving assembly (17) for driving the two clamping seats (10) to move. The outer wall of the mounting tube (4) is provided with three mounting grooves (5) distributed at equal distances. The fixing seat (18) is slidably connected to the inner wall of the mounting groove (5). The driving assembly (17) includes a bidirectional screw (11) rotatably connected to the inner walls on both sides of the mounting cavity (19), and the outer wall of the bidirectional screw (11) is screwed with two symmetrically arranged threaded sleeves (12), and the outer walls on both sides of the two threaded sleeves (12) are rotatably connected to two support plates (13), and one end of the four support plates (13) is rotatably connected to the two clamping seats (10) respectively.

2. A variable intake and exhaust timing sprocket according to claim 1, characterized in that: An auxiliary seat (14) is rotatably connected to the midpoint of the bidirectional screw (11), and the auxiliary seat (14) is fixedly connected to the inner wall of the installation cavity (19).

3. A variable intake and exhaust timing sprocket according to claim 2, characterized in that: The outer walls on both sides of the auxiliary seat (14) are fixedly connected to mounting rods (15), and the two mounting rods (15) are respectively slidably connected to the two pressing seats (10), and the outer walls of the two mounting rods (15) are sleeved with springs (16).

4. A variable intake and exhaust timing sprocket according to claim 3, characterized in that: A circular groove (8) is formed on one outer wall of the fixing seat (18), and a rotating portion (9) connected to the bidirectional screw rod (11) is rotatably connected to the inner wall of the circular groove (8).

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