Automobile steering gear with fuel-saving function

Abstract

The present invention provides a fuel-saving automobile steering gear, comprising a main shaft and a rack. The main shaft is provided with a bearing sleeve, a gear fixedly connected to one end of the main shaft, a rack meshingly connected to the lower portion of the gear, and both sides of the rack fixedly connected to a housing. The housing has receiving grooves on both sides, and a spring is connected to one side of each receiving groove. One end of the spring is connected to a movable rod, and one end of the movable rod is fixedly connected to a push block. The present invention solves the problem that conventional automobile steering gears easily waste lubricating oil, cannot evenly cover the lubricating oil on the surface of the gear, and have poor lubrication effect.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power steering devices, in particular to an automobile steering device with a fuel-saving function. Background Art

[0002] The automotive steering gear, also known as the steering machine or steering gear, is the most important component in a vehicle's steering system. A rack-and-pinion steering gear typically consists of a steering gear housing, a gear, a rack, adjustment screws, and a rack guide. The steering gear is located at the lower end of the steering spindle and meshes with the steering rack. When the steering wheel is turned, the gear in the steering gear rotates, driving the rack in the steering gear in the direction of the steering wheel. The movement of the steering rack is transmitted to the steering knuckle arm via the end of the steering rack and the end of the steering tie rod, thereby turning the wheels. During the steering process, lubricant is added to the surfaces of the gear and rack to reduce wear. Some of the lubricant leaks out through the sides of the rack, reducing the amount of lubricant remaining on the rack. This reduces the wear-reducing effect between the gear and rack, and the leaked lubricant flows to the ground, resulting in significant oil waste. Therefore, there is a need for a fuel-efficient automotive steering gear. Summary of the Invention

[0003] The purpose of the present invention is to provide a fuel-saving automobile steering gear to solve the problem that traditional automobile steering gears easily cause waste of lubricating oil and cannot evenly cover the lubricating oil on the surface of the gear, resulting in poor lubrication effect.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A fuel-saving automobile steering gear comprises a main shaft and a rack. A bearing is sleeved on the surface of the main shaft. One end of the main shaft is fixedly connected to a gear. A rack is meshedly connected to the lower side of the gear. Both sides of the rack are fixedly connected to a housing. Receiving grooves are provided on both sides of the interior of the housing. One side of each receiving groove is connected to a spring. One end of the spring is connected to a moving rod. One end of the moving rod is fixedly connected to a push block.

[0006] Furthermore, the push block is located on both sides of the rack, the bottom of the push block abuts against both sides of the upper end surface of the rack, and the shape of the push block is set to be diamond-shaped.

[0007] Furthermore, stoppers are provided on both sides of the push block, and baffles are fixedly connected to both sides of the upper end surface of the rack, and the height of the baffles is lower than the height of the meshing point between the gear and the rack.

[0008] Furthermore, a limiting block is fixedly connected in the accommodating groove, and the limiting block is located at a port position in the accommodating groove away from the spring. A through hole is provided in the limiting block, and the moving rod passes through the through hole and is slidably connected to the limiting block.

[0009] Furthermore, guide grooves are provided on both sides of the upper end surface of the rack, and a plurality of diversion grooves communicating with the guide grooves are also provided on both sides of the upper end surface of the rack.

[0010] Furthermore, the bearing includes an inner ring, an outer ring, and balls arranged between the inner ring and the outer ring, and the inner surface of the inner ring is fixedly connected to the main shaft.

[0011] Furthermore, one side of the outer ring is rotatably connected to a cleaning brush rod, and the cleaning brush rod is located on the side of the gear.

[0012] Furthermore, a cleaning brush is provided on the surface of the cleaning brush rod, and the cleaning brush abuts against the outer surface of the gear.

[0013] Furthermore, two cleaning brush rods are provided, one located on each side of the gear.

[0014] The beneficial effects of the present invention are as follows: the automobile steering gear can enable the push block to repeatedly push the lubricating oil leaked from both sides of the rack through the transmission between the gear and the rack, thereby reducing the waste of lubricating oil, increasing the amount of oil between the rack and the gear, and reducing the wear between the gear and the rack; the cleaning brush can evenly brush the lubricating oil on the rack onto the surface of the gear, thereby making the lubricating oil on the surfaces of the gear and the rack more evenly distributed, achieving a better lubrication effect and avoiding waste of lubricating oil.

[0015] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the overall structure of a fuel-saving automobile steering gear according to the present invention.

[0017] Figure 2 This is a structural diagram of the interior of the shell in the present invention.

[0018] Figure 3 It is a partial structural diagram of the rack and housing in the present invention.

[0019] Figure 4 This is a diagram of the specific connection structure of the bearing in the present invention.

[0020] Figure 5 This is a diagram of the connection structure of the bearing, connecting rod, cleaning rod and cleaning brush in the present invention. DETAILED DESCRIPTION

[0021] like Figure 1 The fuel-saving automobile steering gear shown in FIG. 1 includes a main shaft 1 and a rack 4. The main shaft 1 is provided with a bearing 2. One end of the main shaft 1 is fixedly connected to a gear 3. The lower portion of the gear 3 is meshed with a rack 4. Both sides of the rack 4 are fixedly connected to a housing 5. Figure 2 As shown, accommodating grooves 6 are provided on both sides of the interior of the shell 5, and a spring 7 is connected to one side of the interior of the two accommodating grooves 6. One end of the spring 7 is connected to a moving rod 8, and one end of the moving rod 8 is fixedly connected to a push block 11.

[0022] Preferably, in combination with the above solution, to repeatedly push in any leaked lubricating oil from both sides of the rack 4 and reduce lubricating oil waste, push blocks 11 are located on both sides of the rack 4, with their bottoms abutting both sides of the upper end surface of the rack 4. To reduce travel resistance, the push blocks 11 are shaped like diamonds. This structure increases the amount of oil between the rack 4 and the gear 3, reducing wear between the gear 3 and the rack 4.

[0023] Preferably, in combination with the above scheme, in order to better push in the lubricating oil leaked from both sides of the rack 4, stop blocks 12 are provided on both sides of the push block 11, and baffles 13 are fixedly connected on both sides of the upper end surface of the rack 4, and the height of the baffle 13 is lower than the height of the meshing point between the gear 3 and the rack 4.

[0024] Preferably, in combination with the above-mentioned solution, in order to make the sliding of the movable rod 8 more stable and limit the moving range of the stop block 12, a limiting block 9 is fixedly connected to the accommodating groove 6, and the limiting block 9 is located at a port position in the accommodating groove 6 away from the spring 7. A through hole is opened in the limiting block 9, and the movable rod 8 passes through the through hole and is slidably connected to the limiting block 9.

[0025] Preferably, in combination with the above-mentioned solution, in order to reduce the lubricating oil from dripping onto the ground and accurately guide the oil leaked from both sides of the rack 4 to the inner side of the rack 4, guide grooves 14 are provided on both sides of the upper end surface of the rack 4, and multiple diversion grooves 15 communicating with the guide grooves 14 are also provided on both sides of the upper end surface of the rack 4.

[0026] Preferably, in combination with the above solution, the bearing 2 includes an inner ring 21 , an outer ring 22 , and balls 23 arranged between the inner ring 21 and the outer ring 22 , and the inner surface of the inner ring 21 is fixedly connected to the main shaft 1 .

[0027] Preferably, in combination with the above solution, in order to be able to brush the lubricating oil on the rack 4 onto the surface of the gear 3, a cleaning brush rod 24 is rotatably connected to one side of the outer ring 22, and the cleaning brush rod 24 is located on the side of the gear 3.

[0028] Preferably, in combination with the above solution, a cleaning brush 25 is provided on the surface of the cleaning brush rod 24 , and the cleaning brush 25 abuts against the outer surface of the gear 3 .

[0029] Preferably, in combination with the above solution, in order to make the lubricating oil on the surfaces of the gear 3 and the rack 4 more evenly distributed and achieve a better lubrication effect, two cleaning brush rods 24 are provided, one on each side of the gear 3 .

[0030] Principle of the present invention:

[0031] When the steering gear is in use, the steering wheel is turned to drive the main shaft 1 to rotate, so that the main shaft 1 drives the gear 3 to rotate on the rack 4, and the gear 3 drives the rack 4 to make a linear motion, so that the end of the rack 4 and the end of the steering rod are transmitted to the steering knuckle arm, so that the wheel rotates and steers.

[0032] During the steering process, in order to prevent the lubricating oil from leaking out from both sides of the rack 4, the push block 11 is driven by the movable rod 8 in the receiving groove 6 to push the lubricating oil on both sides of the rack 4 into the interior of the rack 4, so that the lubricating oil can be reused; when the gear 3 squeezes the push block 11, the push block 11 retracts toward one side of the receiving groove 6, and in the process of retracting the push block 11, the lubricating oil on both sides of the rack 4 can also be pushed to the inside of the rack 4; when the gear 3 does not squeeze the push block 11, the elastic force of the spring 7 causes the movable rod 8 to drive the push block 11 again to push the oil on both sides of the rack 4. Over and over again, through the transmission between the gear 3 and the rack 4, the push block 11 can repeatedly push the lubricating oil leaked from both sides of the rack 4, thereby reducing the waste of lubricating oil, increasing the amount of oil between the rack 4 and the gear 3, and reducing the wear between the gear 3 and the rack 4.

[0033] Through the action of the guide groove 14 and the baffle 13, the lubricating oil can be reduced from dripping onto the ground, and through the action of the guide groove 14 and the diversion groove 15, the oil leaking from both sides of the rack 4 can be accurately guided to the inner side of the rack 4; when the main shaft 1 rotates, the cleaning brush rod 24 on the bearing 2 along the direction of rotation of the gear 3 approaches the surface of the rack 4 and the gear 3, so that the cleaning brush 25 on the cleaning brush rod 24 fits the surface of the rack 4 and the gear 3, and the lubricating oil on the rack 4 is evenly brushed on the surface of the gear 3, so that the lubricating oil on the surface of the gear 3 and the rack 4 is more evenly distributed, the lubrication effect is better and no lubricating oil is wasted.

[0034] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they all fall within the scope of protection of the present invention.

Claims

1. A fuel-saving automobile steering gear, comprising a main shaft (1) and a rack (4), characterized in that: The surface of the main shaft (1) is sleeved with a bearing (2), one end of the main shaft (1) is fixedly connected to a gear (3), the lower part of the gear (3) is meshedly connected to a rack (4), both sides of the rack (4) are fixedly connected to a housing (5), both sides of the interior of the housing (5) are provided with accommodating grooves (6), one side of the interior of the two accommodating grooves (6) is connected to a spring (7), one end of the spring (7) is connected to a moving rod (8), and one end of the moving rod (8) is fixedly connected to a push block (11); the push block (11) is located on both sides of the rack (4), the bottom of the push block (11) abuts against both sides of the upper end face of the rack (4), and the shape of the push block (11) is set to be rhombus; both sides of the upper end face of the rack (4) are provided with guide grooves (14), and both sides of the upper end face of the rack (4) are also provided with a plurality of diversion grooves (15) communicating with the guide grooves (14); When the gear (3) squeezes the push block (11), the push block (11) retracts toward one side of the accommodating groove (6). During the retraction of the push block (11), the lubricating oil on both sides of the rack (4) can be pushed to the inner side of the rack (4); when the gear (3) does not squeeze the push block (11), the elastic force of the spring (7) causes the movable rod (8) to drive the push block (11) again to push the oil on both sides of the rack (4).

2. The fuel-saving automobile steering gear according to claim 1, characterized in that: Stoppers (12) are provided on both sides of the push block (11), and baffles (13) are fixedly connected to both sides of the upper end surface of the rack (4), and the height of the baffles (13) is lower than the height of the meshing portion between the gear (3) and the rack (4).

3. The fuel-saving automobile steering gear according to claim 1, characterized in that: A limiting block (9) is fixedly connected to the accommodating groove (6), and the limiting block (9) is located at a port position in the accommodating groove (6) away from the spring (7). A through hole is provided in the limiting block (9), and the moving rod (8) passes through the through hole and is slidably connected to the limiting block (9).

4. The fuel-saving automobile steering gear according to claim 1, characterized in that: The bearing (2) comprises an inner ring (21), an outer ring (22), and balls (23) arranged between the inner ring (21) and the outer ring (22), and the inner surface of the inner ring (21) is fixedly connected to the main shaft (1).

5. The fuel-saving automobile steering gear according to claim 4 is characterized in that: A cleaning brush rod (24) is rotatably connected to one side of the outer ring (22), and the cleaning brush rod (24) is located on the side of the gear (3).

6. The fuel-saving automobile steering gear according to claim 5, characterized in that: A cleaning brush (25) is provided on the surface of the cleaning brush rod (24), and the cleaning brush (25) abuts against the outer surface of the gear (3).

7. A fuel-saving automobile steering gear according to claim 5 or 6, characterized in that: Two cleaning brush rods (24) are provided, and are located on both sides of the gear (3).

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