Anti-loosening structure of automobile steering device

Abstract

The utility model relates to the technical field of automobile steering devices, and discloses an anti-loosening structure of an automobile steering device, which comprises a steering device shell and a worm arranged in the steering device shell, one side of the worm is rotatably connected with the inner wall of the steering device shell through a bearing, and the other side of the worm is rotatably connected with the inner wall of the steering device shell. One side of the worm penetrates to the outer side of the steering gear shell and is fixedly connected with a driving rod, and a worm gear is arranged at the bottom of an inner cavity of the steering gear shell. In the use process, the anti-disengaging ring is clamped in the limiting frame, the anti-disengaging ring can be driven to be located between the limiting frame and the positioning ring along with rotation of the worm gear, the worm gear can keep stable under the conditions of vibration and load, and potential safety hazards caused by the fact that the worm gear loosens from the surface of the worm are prevented. And the worm enables the position of the limiting ring to be effectively fixed through the clamping ring, the sliding block moves in the fixing shell in a limited mode through cooperation with the fixing rod and the fixing shell, the worm is prevented from loosening, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering gears, in particular to an anti-loosening structure of an automobile steering gear. Background Art

[0002] A car's steering system is a vital component of the vehicle, allowing the driver to change direction. It's typically driven mechanically, hydraulically, or by an electric motor, and controls the speed and direction of the wheels. The steering system typically consists of a steering mechanism and a steering pump, which work together to steer the vehicle. The steering mechanism can be mechanical, hydraulic, or electric, while the steering pump transmits power to the steering mechanism to change the direction of the wheels. Some modern car steering systems are also equipped with an electronic control unit (ECU), which monitors vehicle speed and the steering angle of the wheels and automatically adjusts the steering output as needed, providing a more precise and comfortable driving experience.

[0003] A common type of automotive steering gear is a worm gear steering gear. However, current turbines and worm gears are usually supported by a single bearing during installation. However, after long-term use, the steering gear may become loose due to vibration or load, which may affect driving safety and affect the meshing accuracy between the worm gear and the worm gear, resulting in looseness. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-loosening structure for an automobile steering gear to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an anti-loosening structure for an automobile steering gear, comprising a steering gear housing, and further comprising:

[0006] A worm is provided inside the steering gear housing, one side of the worm being rotatably connected to the inner wall of the steering gear housing via a bearing, one side of the worm extending through the outer side of the steering gear housing and fixedly connected to a drive rod, a worm wheel is provided at the bottom of the inner cavity of the steering gear housing, a connecting rod is fixedly connected inside the worm wheel, and a rear side of the connecting rod is rotatably connected to the inner wall of the steering gear housing via a bearing;

[0007] A cover plate is installed on the top of the steering gear housing. A sealing groove is provided on the top of the steering gear housing. The rear side of the inner cavity of the steering gear housing is fixedly connected to a limiting frame.

[0008] Preferably, the rear side of the worm wheel is fixedly connected with an anti-slip ring, the interior of the anti-slip ring is movably connected to the interior of the limit frame, and both sides of the interior of the limit frame are fixedly connected with positioning rings, and the front side of the positioning ring is in contact with the anti-slip ring.

[0009] Preferably, the top and bottom of the limiting frame are fixedly connected to reinforcement blocks, and one side of the reinforcement block is fixedly connected to the inner wall of the steering gear housing.

[0010] Preferably, both sides of the worm surface are fixedly connected with limit rings, and snap rings are installed on the front and back sides between the two opposite sides of the limit rings.

[0011] Preferably, a fixing rod is fixedly connected to one side of the clamping ring, a fixing shell is sleeved on the surface of the fixing rod, and a side of the fixing shell close to the steering gear housing is fixedly connected to the inner wall of the steering gear housing.

[0012] Preferably, the top and bottom of the fixing rod are fixedly connected with sliders for limiting position, and the top and bottom of the fixing shell are provided with sliding grooves for cooperating with the sliders.

[0013] Preferably, a spring is fixedly connected to one side of the fixing rod, and a side of the spring away from the fixing rod is fixedly connected to the inner wall of the fixing shell.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The anti-slip ring is clamped in the inner part of the limit frame during use of the utility model. As the worm wheel rotates, the anti-slip ring is also driven between the limit frame and the positioning ring, so that the worm wheel can maintain its stability under vibration and load conditions, and prevent the worm wheel from loosening from the surface of the worm and causing safety hazards. The position of the limit ring can also be effectively fixed by the worm through the clamping ring. By cooperating with the fixing rod and the fixing shell, the slider is limited and moved in the inner part of the fixing shell, which prevents the worm from loosening and improves the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the anti-loosening structure of the automobile steering gear provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the cover provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the steering gear housing provided by the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the limit frame provided by the utility model;

[0020] Figure 5 The utility model provides Figure 4 Schematic diagram of the structure at point A in the middle.

[0021] In the figure: 1. Steering gear housing; 2. Worm; 3. Drive rod; 4. Worm wheel; 5. Connecting rod; 6. Cover plate; 7. Sealing groove; 8. Limiting frame; 9. Anti-slip ring; 10. Positioning ring; 11. Reinforcement block; 12. Limiting ring; 13. Snap ring; 14. Fixing rod; 15. Fixing shell; 16. Slider; 17. Slide groove; 18. Spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5 As shown, an anti-loosening structure for an automobile steering gear includes a steering gear housing 1, and also includes: a worm 2 disposed inside the steering gear housing 1, one side of the worm 2 being rotatably connected to the inner wall of the steering gear housing 1 via a bearing, one side of the worm 2 extending through the outer side of the steering gear housing 1 and fixedly connected to a drive rod 3, which is convenient for steering by cooperating with the worm 2 through the drive rod 3, a worm wheel 4 is disposed at the bottom of the inner cavity of the steering gear housing 1, and a connecting rod 5 is fixedly connected to the inside of the worm wheel 4, which facilitates the rotation and support of the worm wheel 4 through the connecting rod 5, and the rear side of the connecting rod 5 is rotatably connected to the inner wall of the steering gear housing 1 via a bearing;

[0024] A cover plate 6 is installed on the top of the steering gear housing 1, and the interior of the steering gear housing 1 is easily inspected through the cover plate 6. A sealing groove 7 is provided on the top of the steering gear housing 1. A sealing gasket is provided at the bottom of the cover plate 6 to cooperate with the sealing groove 7, which can improve the sealing between the cover plate 6 and the steering gear housing 1. The rear side of the inner cavity of the steering gear housing 1 is fixedly connected to a limiting frame 8.

[0025] The rear side of the worm gear 4 is fixedly connected with an anti-slip ring 9, which is clamped to the inside of the limit frame 8 through the anti-slip ring 9, fits with its inner wall, and is located between the limit frame 8 and the positioning ring 10, so that the worm gear 4 can always be maintained in this position. The inside of the anti-slip ring 9 is movably connected to the inside of the limit frame 8, and the two sides of the inside of the limit frame 8 are fixedly connected with the positioning ring 10. The front side of the positioning ring 10 fits with the anti-slip ring 9. The top and bottom of the limit frame 8 are fixedly connected with reinforcement blocks 11. The fixed connection between the reinforcement block 11 and the steering gear housing 1 can improve the connection strength between the limit frame 8 and the inner wall of the steering gear housing 1. One side of the reinforcement block 11 is fixedly connected to the inner wall of the steering gear housing 1.

[0026] Both sides of the surface of the worm 2 are fixedly connected to limit rings 12, and a snap ring 13 is installed on the front and rear sides between the opposite sides of the two limit rings 12. The limit ring 12 cooperates with the snap ring 13 to assist in positioning the position of the worm 2 and prevent it from deviating from the current rotation position. One side of the snap ring 13 is fixedly connected to a fixing rod 14, and the surface of the fixing rod 14 is sleeved with a fixing shell 15. The side of the fixing shell 15 close to the steering gear housing 1 is fixedly connected to the inner wall of the steering gear housing 1, and the position of the snap ring 13 can be assisted in limiting the position by the fixing rod 14 and the fixing shell 15. The top and bottom of the fixing rod 14 are fixedly connected to a slider 16 for limiting. The slider 16 cooperates with the slide groove 17 to enable the fixing rod 14 to move slightly inside the fixing shell 15. The top and bottom of the fixing shell 15 are provided with a slide groove 17 for cooperating with the slider 16. A spring 18 is fixedly connected to one side of the fixing rod 14, and the spring 18 can assist in resetting the position of the fixing rod 14. The side of the spring 18 away from the fixing rod 14 is fixedly connected to the inner wall of the fixing shell 15.

[0027] Working principle: First, when the driving rod 3 cooperates with the external transmission to make the worm 2 engage with the worm wheel 4 and rotate, the worm wheel 4 will drive the connecting rod 5 to rotate. At the same time, during the rotation of the worm wheel 4, the anti-slip ring 9 will be driven to rotate between the limit frame 8 and the positioning ring 10 to keep its position stable, preventing the steering gear from vibrating or overloading and causing looseness before and after affecting the connection accuracy between the worm wheel 4 and the worm 2. At the same time, when the worm 2 rotates, the limit ring 12 will also be driven to rotate, and a snap ring 13 is installed between the limit rings 12, and the snap ring 13 is rotationally connected to the surface of the worm 2, which can assist in supporting and limiting the worm 2 to prevent loosening. The position of the snap ring 13 can be assisted by the fixed rod 14 and the fixed shell 15, and the slider 16 cooperates with the slide groove 17 to make the fixed rod 14 move slightly inside the fixed shell 15, and rely on the spring 18 to assist in resetting it.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening structure for an automobile steering gear, comprising a steering gear housing (1), characterized in that: Also includes: A worm (2) is arranged inside the steering gear housing (1), one side of the worm (2) is rotatably connected to the inner wall of the steering gear housing (1) via a bearing, one side of the worm (2) penetrates the outer side of the steering gear housing (1) and is fixedly connected to a driving rod (3), a worm wheel (4) is arranged at the bottom of the inner cavity of the steering gear housing (1), a connecting rod (5) is fixedly connected inside the worm wheel (4), and the rear side of the connecting rod (5) is rotatably connected to the inner wall of the steering gear housing (1) via a bearing; A cover plate (6) is installed on the top of the steering gear housing (1); a sealing groove (7) is provided on the top of the steering gear housing (1); and a limiting frame (8) is fixedly connected to the rear side of the inner cavity of the steering gear housing (1).

2. The anti-loosening structure of an automobile steering gear according to claim 1, characterized in that: The rear side of the worm wheel (4) is fixedly connected to an anti-slip ring (9), the interior of the anti-slip ring (9) is movably connected to the interior of the limiting frame (8), and both sides of the interior of the limiting frame (8) are fixedly connected to positioning rings (10), and the front side of the positioning ring (10) is in contact with the anti-slip ring (9).

3. The anti-loosening structure of an automobile steering gear according to claim 1, characterized in that: The top and bottom of the limiting frame (8) are both fixedly connected to a reinforcement block (11), and one side of the reinforcement block (11) is fixedly connected to the inner wall of the steering gear housing (1).

4. The anti-loosening structure of an automobile steering gear according to claim 1, characterized in that: Limiting rings (12) are fixedly connected to both sides of the surface of the worm (2), and snap rings (13) are installed on both the front and rear sides between the two opposite sides of the limiting rings (12).

5. The anti-loosening structure of an automobile steering gear according to claim 4, characterized in that: A fixing rod (14) is fixedly connected to one side of the clamping ring (13); a fixing shell (15) is sleeved on the surface of the fixing rod (14); and a side of the fixing shell (15) close to the steering gear housing (1) is fixedly connected to the inner wall of the steering gear housing (1).

6. The anti-loosening structure of an automobile steering gear according to claim 5, characterized in that: The top and bottom of the fixing rod (14) are fixedly connected with a slider (16) for position limiting, and the top and bottom of the fixing shell (15) are provided with a sliding groove (17) for matching with the slider (16).

7. The anti-loosening structure of an automobile steering gear according to claim 6, characterized in that: A spring (18) is fixedly connected to one side of the fixing rod (14), and a side of the spring (18) away from the fixing rod (14) is fixedly connected to the inner wall of the fixing shell (15).

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