Press-fit chain wheel angle-adjustable mechanism and crankshaft mechanism with press-fit chain wheel angle-adjustable mechanism
By introducing a worm mechanism and a limiting device into the pressed sprocket, the rapid adjustment of the sprocket angle is achieved, and the problem of high adjustment difficulty in the prior art is solved, and the production efficiency and economic benefits are improved.
Patent Information
- Application Number
- CN202421340849.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-13
AI Technical Summary
In the prior art, the angle adjustment of the press-fit sprocket is difficult, resulting in low production efficiency and increased cost, and requires frequent disassembly and reassembly.
An adjustable angle mechanism including a pressing sleeve, a positioning plate, a worm mechanism and a pressing mechanism is designed. The worm mechanism drives the rotation of the positioning plate to achieve rapid adjustment of the sprocket angle, and reduce friction and adjustment using the limiting device and lubricating components. Difficulty.
It reduces the difficulty of adjusting the pressed sprocket, improves production efficiency, reduces time and labor costs, and achieves convenient and accurate adjustment of the sprocket angle.
Smart Images
Figure CN222296700U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crankshaft structures, and more specifically, to a press-fit sprocket adjustable angle mechanism. In addition, the utility model also relates to a crankshaft mechanism comprising the press-fit sprocket adjustable angle mechanism. Background Art
[0002] The crankshaft is one of the important parts of the internal combustion engine. Its working principle is to convert the up and down reciprocating motion of the piston into rotational motion, thereby driving the output operation of the engine. The processing of the crankshaft is very complicated and requires the coordination of multiple parts to achieve. Among them, the timing sprocket is an inseparable part of the crankshaft. The timing sprocket tooth top centerline and the crankpin center have specific angle requirements and specific angular position relationship.
[0003] In the prior art, the pressure sprocket has very high requirements on the manufacturing accuracy of the tooling, and when the angle of the pressure sprocket is not suitable, it cannot be adjusted and needs to be disassembled and reassembled, which easily causes a waste of time and labor costs.
[0004] In summary, how to reduce the difficulty of adjusting the angle of the compression sprocket is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide an adjustable angle mechanism for a pressing sprocket, which can achieve angle adjustment of the pressing sprocket through a worm mechanism, thereby reducing the difficulty of adjusting the pressing sprocket.
[0006] Another object of the utility model is to provide a crankshaft mechanism including the above-mentioned press-fit sprocket adjustable angle mechanism.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A press-fit sprocket adjustable angle mechanism, comprising:
[0009] The compression sleeve is a cylindrical component with one end open;
[0010] The positioning plate is an annular structure, the positioning plate is arranged inside the pressing sleeve and is rotatably connected to the pressing sleeve, and a plurality of transmission teeth are arranged on the outer periphery of the positioning plate;
[0011] A worm mechanism, connected to the pressing sleeve and drivingly connected to the positioning plate, the worm mechanism is used to drive the positioning plate to rotate;
[0012] The pressing mechanism is arranged on the positioning plate and is used for pressing the sprocket.
[0013] Preferably, a through hole is provided on the end surface of the unopened end of the pressing sleeve, a through hole corresponding to the through hole is provided on the positioning plate, and a limiting device is provided in the through hole and the through hole, and the limiting device is used to limit the movement range of the positioning plate.
[0014] Preferably, the through hole is a threaded hole, the through hole is an arc-shaped hole, the limiting device is a bolt, and the size of the large head end of the bolt is larger than the size of the arc-shaped hole.
[0015] Preferably, the pressing mechanism, the through hole, the through hole and the bolt are each provided in three numbers, and the pressing mechanism and the through hole are evenly distributed on the positioning plate.
[0016] Preferably, the worm mechanism comprises a support seat, a transmission assembly and a positioning assembly. The positioning assembly is arranged on the support seat and is used to realize the positioning of the support seat. The transmission assembly is used to drive the positioning plate to rotate on a fixed axis.
[0017] Preferably, three through holes are provided on the outer periphery of the positioning plate, the through holes are used to install the pressing mechanism, and the central axis of the through hole is arranged perpendicular to the central axis of the positioning plate.
[0018] Preferably, a plurality of mounting holes are provided on the outer peripheral side of the pressing sleeve, and the mounting holes are arranged corresponding to the through holes.
[0019] Preferably, a lubrication component is provided in the through hole, and the lubrication component can reduce the friction between the positioning plate and the limiting device during the rotation process.
[0020] Preferably, the pressing mechanism comprises a top column, an elastic member and a fixing assembly, and the top column and the fixing assembly are connected via the elastic member.
[0021] A crankshaft mechanism comprises a press-fit sprocket adjustable angle mechanism, wherein the press-fit sprocket adjustable angle mechanism is any one of the press-fit sprocket adjustable angle mechanisms described above.
[0022] The utility model provides a pressing sprocket adjustable angle mechanism, wherein the pressing sleeve is a cylindrical component with an open end, the positioning plate is an annular structure and is arranged inside the pressing sleeve, the outer periphery of the positioning plate is provided with transmission teeth, and the pressing sleeve is also provided with a worm mechanism, which is transmission-connected to the positioning plate. The positioning plate can be rotated by rotating the worm mechanism, and the angle of the pressing mechanism arranged on the positioning plate can be rotated at the same time, the rotation difficulty is low and the adjustment is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0024] Figure 1 This is a schematic diagram of the structure of the adjustable angle mechanism of the pressing sprocket provided by the utility model;
[0025] Figure 2 A schematic structural diagram of the adjustable angle mechanism of the pressing sprocket provided by the utility model from another perspective;
[0026] Figure 3 A schematic diagram of the structure of the compression sleeve provided by the utility model;
[0027] Figure 4 This is a structural schematic diagram of the positioning plate provided by the utility model.
[0028] Reference numerals:
[0029] 1-pressing sleeve; 2-positioning plate; 3-worm gear mechanism; 4-pressing mechanism; 5-bolt; 6-support seat; 7-top column; 8-elastic member; 9-fixing assembly. DETAILED DESCRIPTION
[0030] 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.
[0031] The core of the utility model is to provide a mechanism for adjusting the angle of a pressing sprocket, which has a low adjustment difficulty in rotating the pressing sprocket.
[0032] Another core of the utility model is to provide a crankshaft mechanism including the above-mentioned press-fit sprocket adjustable angle mechanism.
[0033] It should be noted that the directions or positional relationships indicated by “upper”, “lower”, “front”, “back”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.
[0034] The present application provides a pressing sprocket adjustable angle mechanism, comprising: a pressing sleeve 1, a positioning plate 2, a worm mechanism 3 and a pressing mechanism 4;
[0035] Wherein, the pressing sleeve 1 is a cylindrical component with one end open;
[0036] The positioning plate 2 is an annular structure, which is arranged inside the pressing sleeve 1 and is rotatably connected to the pressing sleeve 1. A plurality of transmission teeth are arranged on the outer periphery of the positioning plate 2.
[0037] The worm mechanism 3 is connected to the pressing sleeve 1 and is in transmission connection with the positioning plate 2. The worm mechanism 3 is used to drive the positioning plate 2 to rotate;
[0038] The pressing mechanism 4 is disposed on the positioning plate 2 and is used for pressing the sprocket.
[0039] For details, please refer to the attached Figure 2 With attached Figure 3 The pressing sleeve 1 is a cylindrical structure with one end open and the other end closed. The positioning plate 2 is arranged inside the pressing sleeve 1. The positioning plate 2 is rotatably connected to the pressing sleeve 1. The structure of the positioning plate 2 is shown in the attached figure. Figure 4 As shown, a plurality of transmission teeth are evenly distributed on its periphery, and a notch is provided at the upper end of the positioning plate 2, and the notch is used to install a worm gear mechanism 3, and the worm gear mechanism 3 is transmission-connected to the positioning plate 2, and the rotation of the worm gear mechanism 3 can drive the positioning plate 2 to rotate, so as to realize the rapid adjustment of the sprocket angle, which is convenient and accurate, improves production efficiency, and increases economic benefits. In addition, the adjustable angle mechanism of the pressed sprocket provided in the present application is small and simple, which is conducive to the anti-error promotion of other similar products.
[0040] Optionally, the positioning plate 2 can be transformed by gears to reduce costs.
[0041] Based on the above embodiment, a through hole is provided on the end face of the unopened end of the pressing sleeve 1, a through hole corresponding to the through hole is provided on the positioning plate 2, and a limiting device is provided in the through hole and the limiting device is used to limit the movement range of the positioning plate 2.
[0042] Specifically, a through hole is provided on the unopened end face of the pressing sleeve 1, and a limiting device is provided in the through hole. The limiting device can extend from the through hole to the through hole on the positioning plate 2. During the rotation of the positioning plate 2, it is limited by the shape and size of the through hole to prevent it from rotating significantly.
[0043] On the basis of the above embodiment, the through hole is a threaded hole, the through hole is an arc-shaped hole, the limiting device is a bolt 5, and the size of the large head end of the bolt 5 is larger than the size of the arc-shaped hole.
[0044] Specifically, the threaded connection between the bolt 5 and the through hole is achieved by threaded connection, which can facilitate disassembly or installation. The through hole is arranged in an arc shape and the center of the circle corresponding to the arc line overlaps with the central axis of the positioning plate 2 to avoid affecting the rotation of the positioning plate 2. It should be noted that since the positioning plate 2 usually only requires fine-tuning during adjustment, the size of the through hole should not be set too large. The size of the big head end of the bolt 5 is larger than the arc hole, which can achieve axial limitation of the positioning plate 2.
[0045] Optionally, the bolt 5 can be fixedly connected to the pressing sleeve 1 by welding to prevent loosening, but in order to ensure that the positioning plate 2 can be disassembled, the size of the corresponding large head end should be smaller than the size of the arc hole.
[0046] On the basis of the above-mentioned embodiment, the pressing mechanism 4 , the through hole, the through hole and the bolt 5 are all provided in three numbers, and the pressing mechanism 4 and the through hole are evenly distributed on the positioning plate 2 .
[0047] Specifically, the three pressing mechanisms 4 are all arranged toward the central axis of the positioning plate 2 , and the angle between two adjacent pressing mechanisms 4 is 120°. The sprocket can be clamped by the three pressing mechanisms 4 , and stable clamping of the pressing mechanisms 4 can be ensured.
[0048] Optionally, four or more pressing mechanisms 4 may be provided, but the number of corresponding through holes, through holes and bolts 5 should be consistent with that of the pressing mechanism 4 .
[0049] On the basis of the above embodiment, the worm mechanism 3 includes a support seat 6, a transmission assembly and a positioning assembly. The positioning assembly is arranged on the support seat 6 and is used to realize the positioning of the support seat 6. The transmission assembly is used to drive the positioning plate 2 to rotate along a fixed axis.
[0050] Specifically, the support seat 6 is detachably connected to the positioning plate 2 by bolts 5. The support seat 6 is a U-shaped structure. Transmission components are directly provided at both ends of the U-shaped structure. The transmission component is preferably a worm. Both ends of the worm are rotatably connected to the support seat 6. The worm is transmission-connected to the positioning plate 2. The rotation of the worm can drive the positioning plate 2 to rotate, thereby realizing the adjustment of the position of the pressing mechanism 4.
[0051] On the basis of the above embodiment, three through holes are provided on the outer periphery of the positioning plate 2 , and the through holes are used to install the pressing mechanism 4 , and the central axis of the through holes is perpendicular to the central axis of the positioning plate 2 .
[0052] Specifically, the number of through holes set on the positioning plate 2 needs to correspond to the number of the pressing mechanisms 4, and threads can be set in the through holes to facilitate the installation of the pressing mechanism 4 through threaded connection, while facilitating the disassembly and maintenance of the pressing mechanism 4.
[0053] On the basis of the above-mentioned embodiment, a plurality of mounting holes are provided on the outer peripheral side of the pressing sleeve 1, and the mounting holes are arranged corresponding to the through holes.
[0054] Specifically, mounting holes are provided on the periphery of the pressing sleeve 1, and the positions of the mounting holes correspond to the through holes provided on the periphery of the positioning plate 2, so that the positioning plate 2 can be installed in the pressing sleeve 1 before the pressing mechanism 4 is installed or disassembled, and the tightness of the pressing mechanism 4 can also be adjusted immediately.
[0055] On the basis of the above-mentioned embodiment, a lubrication component is provided in the through hole, and the lubrication component can reduce the friction between the positioning plate 2 and the limiting device during the rotation process.
[0056] Specifically, a lubrication component is arranged in the through hole to reduce the friction between the positioning plate 2 and the limiting device, thereby increasing the service life.
[0057] On the basis of the above-mentioned embodiment, the pressing mechanism 4 includes a top column 7 , an elastic member 8 and a fixing assembly 9 , and the top column 7 and the fixing assembly 9 are connected via the elastic member 8 .
[0058] Specifically, the fixing assembly 9 is connected to the positioning plate 2, and the top column 7 is connected to the fixing assembly 9 via an elastic member 8. The sprocket can be squeezed by a plurality of top columns 7. The elastic member 8 is preferably a spring, which can play a buffering role in the process of squeezing and fixing the sprocket.
[0059] Optionally, the elastic member 8 may be other elastic components, such as a spring sheet.
[0060] In addition to the above-mentioned compression sprocket adjustable angle mechanism, the utility model also provides a crankshaft mechanism including the compression sprocket adjustable angle mechanism disclosed in the above-mentioned embodiment. For the structures of other parts of the crankshaft mechanism, please refer to the prior art and will not be described in detail herein.
[0061] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0062] The above is a detailed introduction to a press-fit sprocket adjustable angle mechanism and a crankshaft mechanism provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A sprocket angle-adjustable mechanism, characterized in that: include: The pressing sleeve (1) is a cylindrical component with an open end; The positioning plate (2) is an annular structure, the positioning plate (2) is arranged inside the pressing sleeve (1) and is rotatably connected to the pressing sleeve (1), and a plurality of transmission teeth are arranged on the outer periphery of the positioning plate (2); A worm mechanism (3) connected to the pressing sleeve (1) and in driving connection with the positioning plate (2), the worm mechanism (3) being used to drive the positioning plate (2) to rotate; A pressing mechanism (4) is provided on the positioning plate (2) and is used for pressing the sprocket.
2. The adjustable angle mechanism of the pressing sprocket according to claim 1, characterized in that: A through hole is provided on the end surface of the non-open end of the pressing sleeve (1), a through hole corresponding to the through hole is provided on the positioning plate (2), and a limiting device is provided in the through hole and the through hole, and the limiting device is used to limit the movement range of the positioning plate (2).
3. The adjustable angle mechanism of the pressing sprocket according to claim 2, characterized in that: The through hole is a threaded hole, the through hole is an arc-shaped hole, the limiting device is a bolt (5), and the size of the large head end of the bolt (5) is larger than the size of the arc-shaped hole.
4. The adjustable angle mechanism of the pressing sprocket according to claim 3, characterized in that: The pressing mechanism (4), the through hole, the through hole and the bolt (5) are each provided in three numbers, and the pressing mechanism (4) and the through hole are evenly distributed on the positioning plate (2).
5. The adjustable angle mechanism of the pressing sprocket according to any one of claims 2 to 4, characterized in that: The worm mechanism (3) comprises a support seat (6), a transmission assembly and a positioning assembly, wherein the positioning assembly is arranged on the support seat (6) and is used to realize the positioning of the support seat (6), and the transmission assembly is used to drive the positioning plate (2) to rotate on a fixed axis.
6. The adjustable angle mechanism of the pressing sprocket according to claim 5, characterized in that: The outer periphery of the positioning plate (2) is provided with three through holes, the through holes being used to install the pressing mechanism (4), and the central axis of the through hole is arranged perpendicular to the central axis of the positioning plate (2).
7. The adjustable angle mechanism of the pressing sprocket according to claim 6, characterized in that: The outer peripheral side of the pressing sleeve (1) is provided with a plurality of mounting holes, and the mounting holes are arranged corresponding to the through holes.
8. The adjustable angle mechanism of the pressing sprocket according to claim 5, characterized in that: A lubrication component is provided in the through hole, and the lubrication component can reduce the friction between the positioning plate (2) and the limiting device during the rotation process.
9. The adjustable angle mechanism of the pressing sprocket according to claim 8, characterized in that: The pressing mechanism (4) comprises a top column (7), an elastic member (8) and a fixing assembly (9); the top column (7) and the fixing assembly (9) are connected via the elastic member (8).
10. A crankshaft mechanism, comprising a press-fit sprocket adjustable angle mechanism, characterized in that: The press-fit sprocket adjustable angle mechanism is the press-fit sprocket adjustable angle mechanism as described in any one of claims 1 to 9.