Mechanical distributor

Abstract

The utility model relates to engine ignition device technical field discloses a kind of mechanical distributor. Including shell and the distributor shaft rotationally installed in shell, adjusting mechanism is connected in the transmission end of distributor shaft, adjusting mechanism bottom end is connected with replacement mechanism. Adjusting mechanism includes universal joint one, mounting rod, adjusting rod, fixed assembly and universal joint two, adjusting rod is slidably inserted in mounting rod and is provided with fixed slot, fixed assembly is driven limit rod by knob and screw thread transmission cooperation and is inserted into fixed slot, to lock the telescopic position of adjusting rod. Replacement mechanism includes fixed threaded column, rotating column and helical gear, rotating column is connected on the outer periphery of fixed threaded column by screw thread, helical gear is sleeved in rotating column, and double fixing is carried out by embedding limiting block and tail end nut compression. The utility model effectively solves the problem that the length of distributor shaft is not adjustable and the gear is difficult to replace, significantly improves the adaptation versatility and maintenance convenience of equipment.

Description

Technical Field

[0001] This utility model relates to the field of engine ignition device technology, and in particular to a mechanical distributor. Background Technology

[0002] The mechanical distributor is a crucial component of the internal combustion engine ignition system. Its main function is to accurately distribute the high-voltage electricity generated by the ignition coil to the spark plugs of each cylinder according to the engine's firing order. The distributor typically extends into the engine block through its distributor shaft at the bottom, meshing with the engine's camshaft or drive gear, thus rotating synchronously with the engine to ensure precise control of the ignition timing.

[0003] However, in existing technological structures, the distributor shaft of mechanical distributors is typically designed as a one-piece rigid long rod structure, with its axial length fixed during manufacturing. Because different brands and models of engines often have significant differences in the depth of the distributor mounting holes and the position of the internal transmission mechanism during design, this fixed-length distributor shaft means that a single model of distributor can only be used with one or a few specific engines. When it is necessary to apply the distributor to other types of mechanical equipment, problems often arise such as the shaft being too long, making proper installation difficult, or the shaft being too short, making it difficult for the drive gear to effectively mesh with the engine transmission end, greatly limiting the equipment's versatility.

[0004] Furthermore, the drive helical gears of existing distributors are typically fixed to the bottom of the distributor shaft via interference fit or welding. While this connection method is robust, it lacks flexibility. In practical use, if the gears wear down due to prolonged high-speed operation, or if they need to be adapted to engines with different gear ratio requirements, it is difficult for users to disassemble and replace the gears individually. This means that once the gears are damaged or the parameters are mismatched, it is often necessary to scrap the entire distributor assembly for replacement, which not only significantly increases the maintenance cost of the equipment but also wastes resources.

[0005] Therefore, this utility model proposes a mechanical distributor to address the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of existing mechanical distributors, such as the non-adjustable distributor shaft length, poor versatility, difficulty in replacing worn drive gears individually, and difficulty in adapting to different transmission ratios, this utility model aims to provide a mechanical distributor with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a mechanical distributor, comprising: a housing, a distributor shaft rotatably mounted inside the housing, and an adjustment mechanism and a replacement mechanism connected to the distributor shaft.

[0008] One end of the distributor shaft is used to engage with an external engine transmission mechanism. An adjustment mechanism is connected to the transmission end of the distributor shaft, and a replacement mechanism is connected to the bottom end of the adjustment mechanism. The adjustment mechanism includes a first universal joint, a second universal joint, a mounting rod, an adjusting rod, and a fixing assembly. The top end of the first universal joint is fixedly connected to the transmission end of the distributor shaft, and the bottom end of the first universal joint is fixedly connected to the top end of the mounting rod.

[0009] The adjusting rod is slidably inserted into the interior of the mounting rod. A fixing groove is axially formed on the outer wall of the adjusting rod. The fixing assembly is installed on the outer wall of the mounting rod. The fixing assembly includes a fixing post, a mounting post rotatably installed inside the fixing post, and a limiting rod detachably threaded into the mounting post. The end of the limiting rod is fitted into the fixing groove to lock the position of the adjusting rod. The bottom end of the adjusting rod is fixedly connected to the top end of the universal joint II via a connecting post.

[0010] The replacement mechanism includes a fixed threaded post, a rotating post, a helical gear, a limiting block, a rubber pad, and a fixing nut. The fixed threaded post is fixedly connected to the bottom end of the universal joint II. The rotating post is threadedly connected to the outer circumference of the fixed threaded post. The helical gear is fixedly sleeved on the outer circumference of the rotating post.

[0011] Preferably, the fixing assembly further includes a knob and a spring. The knob is fixedly connected to the top of the mounting post and extends beyond the outside of the fixing post. The spring is sleeved on the outer periphery of the limiting rod and located inside the fixing post. The spring is used to apply a preload force to the limiting rod in the direction of the fixing groove. The structural design allows the locking mechanism to be easily driven by rotating the knob, and the continuous elastic force applied by the spring prevents the limiting rod from loosening due to vibration.

[0012] Preferably, the bottom end of the limiting rod is threaded, and the inner wall of the mounting post has a structure that mates with the thread, forming a threaded transmission engagement between the limiting rod and the mounting post. When the knob is rotated, the mounting post drives the limiting rod to move up and down along the axial direction of the fixing post, causing the end of the limiting rod to disengage from or engage with the fixing groove. Through the self-locking characteristic and precise control of the threaded transmission, a highly reliable locking of the adjusting rod position is achieved.

[0013] Preferably, both the outer wall of the fixed threaded column and the inner wall of the rotating column have axially extending limiting grooves at corresponding positions. The limiting block is simultaneously embedded in the limiting grooves of both the fixed threaded column and the rotating column to restrict the rotation of the rotating column relative to the fixed threaded column. This structure effectively prevents relative rotation of the rotating column during high-speed operation, ensuring the stability and synchronization of power transmission.

[0014] Preferably, the bottom end of the fixed threaded column has a threaded section extending beyond the bottom end of the rotating column. Both the rubber pad and the fixing nut are fitted onto the threaded section. The rubber pad is pressed against the bottom end face of the rotating column, and the fixing nut is threaded onto the threaded section and abuts against the rubber pad to further secure the helical gear and prevent the limiting block from falling off. The elastic deformation of the rubber pad provides additional anti-loosening damping, enhancing the tightness of the connection.

[0015] Preferably, the top of the housing is provided with an electrical control interface, which is used to connect to an external electronic control device and transmit ignition control signals. A high-voltage wire interface is fixedly installed on the left outer wall of the housing, which is used to connect to the high-voltage wire of the spark plug of an external cylinder. The electrical control interface and the high-voltage wire interface are connected through the ignition distribution structure inside the housing.

[0016] Preferably, a handle is fixedly connected to the right outer wall of the housing, and the handle is used to assist in the installation and fixation of the mechanical distributor.

[0017] Preferably, the distributor shaft and the first universal joint, as well as the connecting column and the second universal joint, are both fixedly connected.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problems of fixed length and poor versatility of existing mechanical distributor shafts by setting an adjustment mechanism at the bottom of the distributor shaft, utilizing the telescopic cooperation between the mounting rod and the adjustment rod, as well as the threaded locking structure of the fixing component. It achieves the effect of flexibly adjusting the length of the distributor shaft to adapt to mechanical equipment with different installation depths and reducing production and maintenance costs.

[0020] 2. This utility model solves the problem that existing distributor drive gears are difficult to replace individually or adapt to different transmission ratios after wear by setting a replacement mechanism at the bottom of the adjustment mechanism and using the threaded connection between the fixed threaded column and the rotating column and the snap-fit ​​of the limit block. It achieves the effect of quickly disassembling and replacing the helical gear assembly, extending the service life of the equipment and ensuring transmission stability at high speeds.

[0021] 3. This utility model solves the problem of connection jamming between the distributor and the engine transmission end caused by installation errors or vibration by setting a double universal joint structure between the distributor shaft and the adjustment mechanism, as well as between the internal components of the adjustment mechanism. It achieves the effect of effectively compensating for installation angle deviation, buffering operating vibration, and ensuring smooth and efficient power transmission.

[0022] 4. This utility model solves the problem of traditional telescopic mechanisms being prone to loosening and failure under high-frequency engine vibration by setting a threaded transmission mechanism and a spring preload structure inside the fixed component. It achieves the effect of using threaded drive to achieve precise positioning and using spring clamping force to prevent the limit rod from falling off, ensuring that the position of the adjusting rod is locked firmly and reliably.

[0023] 5. This utility model solves the problem of relative rotation or loosening of detachable gear structures during high-speed rotation by using a limiting groove and a limiting block in the replacement mechanism, supplemented by rubber pads and fixing nuts for axial clamping. It achieves the dual fixing effect of limiting circumferential freedom and locking axial position, significantly improving the safety of equipment operation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a mechanical distributor proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the universal joint 2 of a mechanical distributor proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the adjusting rod of a mechanical distributor proposed in this utility model;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the helical gear structure of a mechanical distributor proposed in this utility model;

[0029] Figure 6 This is a schematic diagram of the rotating column of a mechanical distributor proposed in this utility model.

[0030] Legend:

[0031] 1. Housing; 2. Distributor shaft;

[0032] 3. Adjustment mechanism; 31. Universal joint one; 32. Mounting rod; 33. Adjustment rod;

[0033] 34. Fixing component; 341. Knob; 342. Mounting post; 343. Fixing post; 344. Limiting rod; 345. Spring; 346. Fixing groove;

[0034] 35. Universal joint 2; 36. Connecting post;

[0035] 4. Replacement mechanism; 41. Fixed threaded column; 42. Rotating column; 43. Helical gear; 44. Limiting groove; 45. Limiting block; 46. Rubber pad; 47. Fixing nut;

[0036] 5. Electrical control interface; 6. High-voltage line interface; 7. Handle. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] Example:

[0039] Reference Figures 1 to 6 This utility model provides a mechanical distributor, which aims to solve the structural defects of existing mechanical distributors, which are difficult to adapt to the installation depth and transmission ratio of different engine models due to the fixed shaft length and the difficulty in conveniently replacing the drive gear.

[0040] The mechanical distributor includes a housing 1 and a distributor shaft 2 rotatably installed inside the housing 1. The distributor shaft 2 serves as the core carrier for power transmission and electrical energy distribution. Its top end extends into the housing 1 to work with the ignition structure, while its bottom end extends out of the housing 1 to receive external power input. To adapt to different mechanical installation environments, an adjustment mechanism 3 is coaxially connected to the bottom end of the distributor shaft 2. The bottom end of the adjustment mechanism 3 is further connected to a replacement mechanism 4. The adjustment mechanism 3 is used to adjust the length of the transmission shaft while ensuring stable power transmission. The replacement mechanism 4 is used to quickly disassemble and replace the drive helical gear 43.

[0041] The housing 1 serves as the mounting base and protective shell for the entire device. An electrical control interface 5 is located on its top. The electrical control interface 5 contains conductive terminals adapted to the plug of an electronic control device, used to connect to an external electronic control device and receive ignition control signals. A high-voltage wire interface 6 is fixedly installed on the left outer wall of the housing 1. The high-voltage wire interface 6 is designed with a branching structure for connecting the high-voltage wires of each cylinder spark plug, used to distribute high-voltage electricity. The electrical control interface 5 and the high-voltage wire interface 6 are connected through the ignition distribution structure inside the housing 1. A handle 7 is fixedly connected to the right outer wall of the housing 1. The surface of the handle 7 is designed with anti-slip textures, providing a stable support point for the operator to install or remove the mechanical distributor in the confined engine compartment.

[0042] The adjustment mechanism 3 structurally includes a universal joint 31, a mounting rod 32, an adjusting rod 33, a fixing assembly 34, a universal joint 35, and a connecting column 36. The top end of the universal joint 31 is fixedly connected to the bottom end of the distributor shaft 2, and the bottom end of the universal joint 31 is fixedly connected to the top end of the mounting rod 32. The mounting rod 32 is hollow inside, and the adjusting rod 33 is slidably inserted into the interior of the mounting rod 32, allowing for axial extension and retraction relative to the mounting rod 32 to change the overall transmission length. The bottom end of the adjusting rod 33 is fixedly connected to the top end of the connecting column 36, and the bottom end of the connecting column 36 is fixedly connected to the top end of the universal joint 35. Through the double universal joint cooperation of the universal joint 31 and the universal joint 35, the installation angle deviation between the distributor and the engine transmission end can be compensated, ensuring the smoothness of power transmission.

[0043] The replacement mechanism 4 is connected to the bottom end of the universal joint 35. It includes a fixed threaded post 41, a rotating post 42, and a helical gear 43. The top end of the fixed threaded post 41 is fixedly connected to the bottom end of the universal joint 35. The rotating post 42 is threadedly connected to the outer circumference of the fixed threaded post 41. The helical gear 43 is fixedly sleeved on the outer circumference of the rotating post 42, so that power is introduced by meshing with the engine transmission mechanism through the helical gear 43. By disassembling and replacing the rotating post 42 and the helical gear 43 on it, the rapid switching of gears with different numbers of teeth or modules can be achieved.

[0044] The adjusting rod 33 serves as the moving end for length adjustment. Its outer wall has multiple rows of fixing grooves 346 evenly spaced along the axial direction. The fixing grooves 346 are used to provide locking points for different length positions. Correspondingly, a fixing component 34 is fixedly installed on the outer wall of the mounting rod 32. The fixing component 34 engages with the fixing grooves 346 through mechanical meshing, thereby limiting the axial relative displacement between the mounting rod 32 and the adjusting rod 33, and ensuring that the shaft length of the distributor remains constant during operation.

[0045] The fixing component 34 includes a fixing post 343, a mounting post 342, a knob 341, a limiting rod 344, and a spring 345. The fixing post 343 is fixedly connected to the outer wall of the mounting rod 32 and serves as the support housing 1 of the entire locking mechanism. The mounting post 342 is rotatably mounted in the cavity inside the fixing post 343 and can rotate circumferentially relative to the fixing post 343. The knob 341 is fixedly connected to the top of the mounting post 342 and extends out of the top of the fixing post 343, allowing the operator to input adjustment commands through rotation.

[0046] The limiting rod 344 slides through the central hole inside the mounting post 342. Its bottom end is designed as a chuck that matches the shape of the fixing groove 346. The inner wall of the mounting post 342 has an internal thread structure, and the outer wall of the limiting rod 344 has an external thread structure that matches the internal thread. The two form a threaded transmission engagement. When the mounting post 342 is rotated by the knob 341, the limiting rod 344 is driven to move linearly up and down along the axial direction of the fixing post 343 under the guidance of the thread, thereby controlling the bottom end of the limiting rod 344 to insert into or disengage from the fixing groove 346, realizing the locking and releasing of the adjusting rod 33.

[0047] Spring 345 is sleeved on the outer periphery of limiting rod 344 and housed inside fixing post 343. One end of spring 345 abuts against the top surface of inner wall of fixing post 343, and the other end abuts against boss structure on outer wall of limiting rod 344. Spring 345 is in a compressed state to continuously apply elastic preload to limiting rod 344 in the direction of fixing groove 346. The structure ensures that under high-frequency vibration conditions of engine, limiting rod 344 can still be tightly pressed into fixing groove 346 to prevent locking failure due to vibration.

[0048] The specific structure of the replacement mechanism 4 is as follows: the top end of the fixed threaded column 41 is fixedly connected to the bottom end of the universal joint 35; the rotating column 42 is sleeved on the outer circumference of the fixed threaded column 41; the inner wall of the rotating column 42 is threadedly connected to the outer wall of the fixed threaded column 41; the helical gear 43 is fixedly sleeved on the outer circumferential surface of the rotating column 42; the structure allows the helical gear 43 to follow the rotating column 42 as a whole component to rotate up or down from the fixed threaded column 41; the outer wall of the fixed threaded column 41 and the inner wall of the rotating column 42 are provided with axially extending limiting grooves 44 at corresponding positions; the limiting block 45 is simultaneously embedded in the limiting grooves 44 of both the fixed threaded column 41 and the rotating column 42. Internally, the mechanical interference formed between the two limiting grooves 44 by the physical structure of the limiting block 45 restricts the circumferential degree of freedom of the rotating column 42, ensuring that the power can be accurately transmitted from the helical gear 43 to the fixed threaded column 41 and subsequent transmission components. The bottom end of the fixed threaded column 41 has a threaded section extending out of the bottom end of the rotating column 42. The rubber pad 46 is fitted on the threaded section and pressed against the bottom end face of the rotating column 42. The fixing nut 47 is threaded to the threaded section and presses against the rubber pad 46. The elastic reaction force generated by the deformation of the rubber pad 46 under pressure provides the anti-loosening pre-tightening force, forcing the fixing nut 47, the rubber pad 46, and the rotating column 42 to form a tight axial pressing fit.

[0049] The implementation principle of this application embodiment is as follows: The mechanical distributor is connected to the housing 1 and the distributor shaft 2. The distributor shaft 2 is installed with the motor to drive the distributor shaft 2 to rotate. The distributor shaft 2 is connected with the adjustment mechanism 3 to adjust the length of the distributor shaft 2 for use in various machines. The distributor shaft 2 is installed with the replacement mechanism 4. By replacing the helical gear 43, it can be adapted to use in various machines. The top of the housing 1 has an electrical control interface 5, which is connected to the electronic control device and transmits ignition control signals. The left side of the housing 1 has a high-voltage wire interface 6, which is used to connect the high-voltage wires of the spark plugs of each cylinder and distribute high-voltage electricity. The right side of the housing 1 has a handle 7.

[0050] The mechanical distributor is fixed to the engine with the housing 1 by the handle 7. The distributor shaft 2 meshes with the engine transmission mechanism and rotates synchronously with the engine. The electrical control interface 5 receives the ignition control signal and generates high voltage electricity in conjunction with the internal structure. Finally, the high voltage electricity is distributed to the spark plugs of each cylinder according to the cylinder power order through the high voltage line interface 6 to complete the ignition.

[0051] The distributor shaft 2 of the mechanical distributor is a single piece, manufactured to a fixed size according to the required parts. The length of the non-adjustable distributor shaft 2 is used for various machines. If the length of the distributor shaft 2 needs to be adjusted, the length of the distributor shaft 2 is adjusted through the adjustment mechanism 3. The distributor shaft 2 is connected to the universal joint 31, and the length of the adjusting rod 33 is adjusted within the mounting rod 32 to adapt to different mechanical distributors. The adjusting rod 33 is connected to the connecting column 36. The distributor shaft 2 is connected through the universal joint 31 and the universal joint 35. It can stably transmit power even when the engine is running at high speed, and can also slightly compensate for the installation angle deviation between the distributor and the engine transmission end.

[0052] The mounting rod 32 and adjusting rod 33 are adjusted and fixed by the fixing assembly 34. The mounting rod 32 is fixedly connected to the fixing post 343 by a knob 341 on its top. Rotating the knob 341 causes the mounting post 342 inside the fixing post 343 to rotate, which in turn causes the limiting rod 344 to move downward. The spring 345 on the limiting rod 344 is compressed inside the fixing post 343. The bottom of the limiting rod 344 is threaded. By rotating the limiting rod 344, it is fixed with the fixing groove 346 of the adjusting rod 33, preventing the mounting rod 32 and adjusting rod 33 from moving. When the distributor shaft 2 is adjusted, rotating the knob 341 causes the mounting post 342 to move upward, disengaging it from the fixing groove 346 of the adjusting rod 33. The spring 345 then releases the pressure, thus adjusting the length.

[0053] When the helical gear 43 is replaced to adapt to different mechanical distributors, the fixing nut 47 on the fixing threaded post 41 is rotated to remove it. The rubber pad 46 connecting the fixing threaded post 41 and the fixing nut 47 is also removed. Then, a rotating post 42 is installed on the fixing threaded post 41, and the helical gear 43 is fitted onto the rotating post 42. Limit grooves 44 are provided in the fixing threaded post 41 and the rotating post 42. By removing the limit block 45 within the limit grooves 44, the rotating post 42 can be rotated via the threads of the fixing threaded post 41, thereby disassembling the helical gear 43 for replacement. By replacing the helical gear 43 with a different one, the helical gear 43 is installed by rotating the rotating column 42, so that the helical gear 43 fitted on the rotating column 42 is installed on the fixed threaded column 41. Then, the limiting block 45 is installed in the limiting groove 44 of the helical gear 43 and the fixed threaded column 41 to fix the helical gear 43 and prevent the helical gear 43 from rotating and displacing at the fixed threaded column 41. The helical gear 43 is further fixed by installing the rubber pad 46 and the fixing nut 47 in sequence, while preventing the limiting block 45 from displacing and falling off in the limiting groove 44 of the fixed threaded column 41 and the rotating column 42.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanical distributor, comprising a housing (1), a distributor shaft (2) rotatably mounted inside the housing (1), one end of the distributor shaft (2) being used to engage with an external engine transmission mechanism; Its features are, The transmission end of the distributor shaft (2) is connected to an adjustment mechanism (3), and the bottom end of the adjustment mechanism (3) is connected to a replacement mechanism (4). The adjustment mechanism (3) includes universal joint one (31), universal joint two (35), mounting rod (32), adjustment rod (33) and fixing component (34). The top end of universal joint one (31) is fixedly connected to the transmission end of the distributor shaft (2), and the bottom end of universal joint one (31) is fixedly connected to the top end of the mounting rod (32). The adjusting rod (33) is slidably inserted into the interior of the mounting rod (32), and the outer wall of the adjusting rod (33) is provided with a fixing groove (346) along the axial direction.

2. A mechanical distributor according to claim 1, characterized in that, The fixing component (34) is installed on the outer wall of the mounting rod (32). The fixing component (34) includes a fixing post (343), a mounting post (342) rotatably installed inside the fixing post (343), and a limiting rod (344) detachably threaded inside the mounting post (342). The end of the limiting rod (344) is adapted to be inserted into the fixing groove (346) to lock the position of the adjusting rod (33). The bottom end of the adjusting rod (33) is fixedly connected to the top end of the universal joint (35) through the connecting post (36).

3. A mechanical distributor according to claim 1, characterized in that, The replacement mechanism (4) includes a fixed threaded column (41), a rotating column (42), a helical gear (43), a limiting block (45), a rubber pad (46), and a fixing nut (47). The fixed threaded column (41) is fixedly connected to the bottom end of the universal joint (35). The rotating column (42) is threadedly connected to the outer periphery of the fixed threaded column (41). The helical gear (43) is fixedly sleeved on the outer periphery of the rotating column (42).

4. A mechanical distributor according to claim 2, characterized in that, The fixing assembly (34) also includes a knob (341) and a spring (345). The knob (341) is fixedly connected to the top of the mounting post (342) and extends out of the fixing post (343). The spring (345) is sleeved on the outer periphery of the limiting rod (344) and located inside the fixing post (343). The spring (345) is used to apply a preload force to the limiting rod (344) in the direction of the fixing groove (346).

5. A mechanical distributor according to claim 4, characterized in that, The bottom end of the limiting rod (344) is provided with a thread, and the inner wall of the mounting column (342) is provided with a structure that mates with the thread, so as to form a threaded transmission engagement between the limiting rod (344) and the mounting column (342). When the knob (341) is rotated, the mounting column (342) drives the limiting rod (344) to move up and down along the axial direction of the fixing column (343), so that the end of the limiting rod (344) disengages from or is inserted into the fixing groove (346).

6. A mechanical distributor according to claim 3, characterized in that, The outer wall of the fixed threaded column (41) and the inner wall of the rotating column (42) are provided with axially extending limiting grooves (44) at corresponding positions. The limiting block (45) is simultaneously embedded in the limiting groove (44) of the fixed threaded column (41) and the limiting groove (44) of the rotating column (42) to restrict the rotation of the rotating column (42) relative to the fixed threaded column (41).

7. A mechanical distributor according to claim 6, characterized in that, The bottom end of the fixed threaded column (41) has a threaded section extending beyond the bottom end of the rotating column (42). The rubber pad (46) and the fixing nut (47) are both fitted onto the threaded section. The rubber pad (46) is pressed against the bottom end face of the rotating column (42). The fixing nut (47) is threaded onto the threaded section and abuts against the rubber pad (46) to further fix the helical gear (43) and prevent the limiting block (45) from falling off.

8. A mechanical distributor according to claim 1, characterized in that, An electrical control interface (5) is provided on the top of the housing (1). The electrical control interface (5) is used to connect to an external electronic control device and transmit ignition control signals. A high-voltage wire interface (6) is fixedly installed on the left outer wall of the housing (1). The high-voltage wire interface (6) is used to connect to the high-voltage wire of the spark plug of the external cylinder. The electrical control interface (5) and the high-voltage wire interface (6) are connected through the ignition distribution structure inside the housing (1). A handle (7) is fixedly connected to the right outer wall of the housing (1). The handle (7) is used to assist in the installation and fixation of the mechanical distributor.

9. A mechanical distributor according to claim 2, characterized in that, The distributor shaft (2) and the universal joint one (31), as well as the connecting column (36) and the universal joint two (35), are all fixedly connected.

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