Steering input shaft for vehicle

Abstract

The utility model discloses a steering input shaft for a vehicle, which belongs to the field of automobile manufacturing and comprises an input main shaft, a spline shaft is of a detachable structure, one side of the input main shaft is provided with a spline shaft connected with a steering wheel steering gear, the other side of the input main shaft is provided with an output shaft, and a butter storage pipe is arranged in the input main shaft. Compared with the prior art, the device has the advantages that the diameter of the butter shunting pipeline connected with the spline groove is set to be smaller than the normal-pressure flowing diameter of butter, so that when the device is used, the butter cannot flow out of the butter storage pipe in a large area without being pressurized, and the service life of the butter storage pipe is prolonged. The influence on the connection strength of the spline shaft and the input main shaft is reduced as much as possible, and when the grease needs to be added, the grease storage pipe can be pressurized only by starting the pushing device, so that the grease is output in the spline shaft, and the grease waste is reduced while the grease is uniformly smeared.

Description

Technical Field

[0001] The utility model relates to the field of automobile manufacturing, in particular to a steering input shaft for a vehicle. Background Art

[0002] In today's social environment, people usually use means of transportation for the convenience of travel. For short-distance travel, these means of transportation include bicycles, tricycles, and low-power electric vehicles. However, when facing long-distance journeys, private cars become the first choice in addition to public transportation. Compared with models such as motorcycles, cars are not only convenient for travel, but also can provide drivers with a better driving environment (leather seats and in-car air conditioning, etc.). The direction of the vehicle is controlled by the steering wheel to control the angle of the front wheels, and the steering wheel controls the angular deviation of the wheels through a transmission mechanism consisting of a steering input shaft, a transmission structure, and a transmission output shaft.

[0003] The existing steering input shaft is connected to the steering wheel gear through a spline shaft on one side of the input spindle. The rotation of the steering wheel gear drives the spline shaft and the input spindle to rotate synchronously, and then the offset angle is connected to the rotation axis of the wheel through the output shaft on the other side of the input spindle.

[0004] The spline shaft and the steering wheel gear are driven by the meshing of their gears. In order to ensure that the spline shaft can be replaced more conveniently when the teeth are strained, it is usually set to a detachable structure. In order to extend the life of the spline shaft, people usually ensure the lubrication of the two by applying grease. If the spline shaft is set to a detachable structure, it will be difficult to supply grease to the spline shaft normally (the grease storage tube is usually placed inside the input spindle). Utility Model Content

[0005] The technical problem to be solved by the utility model is that when the spline shaft of the existing vehicle steering input shaft is set as a detachable structure, it is difficult to connect with the grease storage tube of the input main shaft while ensuring stability.

[0006] To address the above-mentioned technical problems, the present invention provides a technical solution: a vehicle steering input shaft comprising an input spindle, a detachable spline shaft, a spline shaft connected to a steering wheel and steering gear on one side of the input spindle, and an output shaft on the other side. A grease storage tube is provided within the input spindle, with a liquid outlet on one side of the grease storage tube. A grease diversion conduit located within the spline groove is provided within the spline shaft. A polygonal fixing post is provided on one side of the liquid inlet of the spline shaft, and the outer wall of the liquid outlet extends through the internal liquid inlet of the polygonal fixing post. A pushing device is provided within the grease storage tube to displace the grease. The diameter of the grease diversion conduit is smaller than the diameter required for grease flow at normal pressure.

[0007] As an improvement, the pushing device includes a pushing shaft located inside the butter storage tube and a rotating rod passing through the input main shaft and the side wall of the pushing shaft. A rotating gear is provided on one side of the bottom surface of the rotating rod, and a sliding groove corresponding to the outer wall of the rotating gear is provided inside the pushing shaft. Racks meshing with the rotating gear are provided on both sides of the sliding groove.

[0008] As an improvement, the polygonal fixing column passes through one side of the liquid outlet of the input main shaft, and the polygonal fixing column is connected to the input main shaft through a bolt structure.

[0009] As an improvement, a bottom closing column for closing the butter storage tube is provided on the side opposite to the liquid outlet of the input main shaft, and the output shaft passes through the bottom closing column.

[0010] As an improvement, the output shaft is connected to the bottom surface closing column through a bolt structure, and the bottom surface closing column is connected to the bottom surface of the butter storage tube by welding.

[0011] As an improvement, the outer wall of the liquid outlet is connected to the internal through hole of the polygonal fixing column through a sealing gasket.

[0012] The advantages of the present invention over the prior art are that: the diameter of the butter diversion pipe connected to the spline groove is set to be smaller than the diameter of the butter flowing at normal pressure, so that when it is in use, the butter will not flow out of the butter storage pipe over a large area without pressurization, and the influence on the connection strength between the spline shaft and the input main shaft can be reduced as much as possible. When butter needs to be added, it is only necessary to start the pushing device to pressurize the butter storage pipe, thereby ensuring the output of butter in the spline shaft, making the butter evenly spread and reducing butter waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a general structural diagram of a vehicle steering input shaft according to the present invention.

[0014] Figure 2 The utility model is a cross-sectional view of the overall structure of a vehicle steering input shaft.

[0015] Figure 3 The utility model is an exploded view of the overall structure of a vehicle steering input shaft.

[0016] Figure 4 This is a structural diagram of a liquid outlet of a steering input shaft for a vehicle according to the present invention.

[0017] As shown in the figure: 1. Input main shaft; 2. Spline shaft; 3. Output shaft; 4. Grease storage tube; 41. Liquid outlet; 42. Grease diversion pipe; 43. Polygonal fixed column; 44. Pushing device; 441. Pushing shaft; 442. Rotating rod; 443. Rotating gear; 444. Sliding groove; 445. Rack; 45. Closing column. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] As the instruction manual Figure 1 、 2 As shown in , 3 and 4, it includes an input main shaft 1, a spline shaft 2 for connecting to a steering wheel and steering gear is provided on one side of the input main shaft 1, and the spline shaft 2 is a detachable structure. An output shaft 3 is provided on the other side of the input main shaft 1, a butter storage tube 4 is provided inside the input main shaft 1, a liquid outlet 41 is provided on one side of the butter storage tube 4, a butter diversion pipe 42 is provided inside the spline shaft 2 and is located inside the spline groove, a polygonal fixed column 43 is provided on one side of the liquid inlet of the spline shaft 2, the outer wall of the liquid outlet 41 passes through the internal liquid inlet of the polygonal fixed column 43, a pushing device 44 for pushing the displacement of butter is provided inside the butter storage tube 4, and the diameter of the butter diversion pipe 42 is smaller than the diameter required for the butter to flow at normal pressure. The polygonal fixing column 43 passes through one side of the liquid outlet 41 of the input main shaft 1, and the polygonal fixing column 43 is connected to the input main shaft 1 through a bolt structure. The outer wall of the liquid outlet 41 is connected to the internal through hole of the polygonal fixing column 43 through a sealing gasket, and the outer wall of the liquid outlet 41 is inserted into the through hole inside the polygonal fixing column 43 (in order to prevent butter leakage, a sealing gasket is put on the outer wall of the liquid outlet 41 before connection. When the liquid outlet 41 is inserted into the through hole inside the polygonal fixing column 43, the outer wall of the polygonal fixing column 43 is inserted into the internal polygonal hole of the input main shaft 1, and the liquid outlet 41 is located inside the polygonal hole); align the screw hole on the side of the polygonal fixing column 43 with the screw hole on the outer wall of the input main shaft 1, and screw in the screws to fix it.

[0020] The pushing device 44 includes a pushing shaft 441 located inside the butter storage tube 4 and a rotating rod 442 passing through the input main shaft 1 and the side wall of the pushing shaft 441. A rotating gear 443 is provided on one side of the bottom surface of the rotating rod 442. A sliding groove 444 corresponding to the outer wall of the rotating gear 443 is provided inside the pushing shaft 441. Racks 445 meshing with the rotating gear 443 are provided on both sides of the sliding groove 444. The closed end of the pushing shaft 441 is inserted into the bottom hole of the butter storage tube 4 from the through hole at the other end of the input main shaft 1, and the sliding groove 444 of the pushing shaft 441 is aligned with the through hole of the rotating rod 442 on the side of the input main shaft 1. A rotating bearing is inserted into the through hole of the rotating rod 442, and the rotating rod 442 is inserted into the inner hole of the rotating bearing, so that the rotating gear 443 on the bottom surface of the rotating rod 442 is stuck on the racks 445 on both sides of the sliding groove 444.

[0021] A bottom closing column 45 for closing the butter storage tube 4 is provided on the opposite side of the liquid outlet 41 of the input main shaft 1, and the output shaft 3 passes through the bottom closing column 45. The output shaft 3 is connected to the bottom closing column 45 by a bolt structure, and the bottom closing column 45 is connected to the bottom surface of the butter storage tube 4 by welding. The bottom closing column 45 is placed on the bottom through hole of the butter storage tube 4, and the two are welded into an integrated structure using an electric welding machine. The output shaft 3 is inserted into the bottom through hole of the bottom closing column 45, the screw holes of the two are aligned, and the screws are screwed in to fix them.

[0022] During the specific implementation of the present invention, when the spline shaft 2 needs to be added with butter, a screwdriver is used to rotate the slot at the top of the rotating rod 442 to control the displacement of the pushing shaft 441 inside the butter storage tube 4, so that the pressure inside the butter diversion pipe 42 increases, thereby squeezing the butter from the branch outlet of the butter diversion pipe 42, thereby achieving the lubrication effect; when butter is short of butter, the spline shaft 2 needs to be removed and butter needs to be added from the liquid outlet 41. Before adding butter, the pushing shaft 441 needs to be reset.

[0023] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A vehicle steering input shaft, comprising an input spindle (1), one side of the input spindle (1) is provided with a spline shaft (2) connected to a steering wheel steering gear, the spline shaft (2) being a detachable structure, and the other side of the input spindle (1) is provided with an output shaft (3), characterized in that: A butter storage tube (4) is provided inside the input main shaft (1), a liquid outlet (41) is provided on one side of the butter storage tube (4), a butter diversion pipe (42) located inside the spline groove is provided inside the spline shaft (2), a polygonal fixing column (43) is provided on one side of the liquid inlet of the spline shaft (2), the outer wall of the liquid outlet (41) passes through the internal liquid inlet of the polygonal fixing column (43), a pushing device (44) for pushing the butter to move is provided inside the butter storage tube (4), and the diameter of the butter diversion pipe (42) is smaller than the diameter required for the butter to flow at normal pressure.

2. The vehicle steering input shaft according to claim 1, characterized in that: The pushing device (44) comprises a pushing shaft (441) located inside the butter storage tube (4) and a rotating rod (442) passing through the input main shaft (1) and the side wall of the pushing shaft (441); a rotating gear (443) is provided on one side of the bottom surface of the rotating rod (442); a sliding groove (444) corresponding to the outer wall of the rotating gear (443) is provided inside the pushing shaft (441); and racks (445) meshing with the rotating gear (443) are provided on both sides of the sliding groove (444).

3. The vehicle steering input shaft according to claim 1, characterized in that: The polygonal fixing column (43) passes through one side of the liquid outlet (41) of the input main shaft (1), and the polygonal fixing column (43) is connected to the input main shaft (1) via a bolt structure.

4. The vehicle steering input shaft according to claim 1, characterized in that: A bottom surface sealing column (45) for sealing the butter storage tube (4) is provided on the side opposite to the liquid outlet (41) of the input main shaft (1), and the output shaft (3) passes through the bottom surface sealing column (45).

5. The vehicle steering input shaft according to claim 4, characterized in that: The output shaft (3) is connected to the bottom surface closing column (45) through a bolt structure, and the bottom surface closing column (45) is connected to the bottom surface of the butter storage tube (4) through welding.

6. The vehicle steering input shaft according to claim 1, characterized in that: The outer wall of the liquid outlet (41) is connected to the internal through hole of the polygonal fixing column (43) through a sealing gasket.

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