Automobile steering gear with protection function

Abstract

This utility model discloses a car steering gear with protective function, including a housing and a steering shaft and a tie rod disposed on the housing; a protective component is provided at the connection between the housing and the tie rod, the protective component including a dust cover, the dust cover being corrugated; a first connecting pipe and a second connecting pipe are respectively provided at both ends of the dust cover; the interior of the first connecting pipe is correspondingly engaged with a first protrusion of the housing; a clamp is provided on the outside of the first connecting pipe, and the first connecting pipe and the first protrusion are engaged in the clamp; both the outside of the tie rod and the second connecting pipe are threaded, and the tie rod and the second connecting pipe are connected by a fastening nut. The clamp fixes the first connecting pipe and the first protrusion, and the fastening nut fixes the second connecting pipe and the tie rod, which not only enhances the stability of the dustproof component connection, but also improves the sealing at both ends of the connection between the tie rod and the housing, preventing dust and other contaminants from entering the gap between the tie rod and the housing connection and affecting the performance of the steering gear.

Description

Technical Field

[0001] This utility model belongs to the field of automotive steering technology, and in particular relates to an automotive steering system with protective functions. Background Technology

[0002] The steering mechanism of an automobile mainly consists of the steering wheel, steering shaft, steering spindle, steering oil lines, steering oil pump, steering oil reservoir, steering knuckle arm, steering tie rod, steering rocker arm, integral steering gear, steering drag link, and steering damper. The steering mechanism is the device by which the driver operates the steering gear, transmitting the force applied by the driver to the steering wheel to the steering gear. The steering gear is the mechanism that converts the rotation of the steering wheel into the swinging motion of the steering rocker arm or the linear reciprocating motion of the rack and pinion shaft, and amplifies the steering force. The steering gear's function is to appropriately transform the steering torque and steering angle from the steering wheel (mainly by reducing speed and increasing torque) before outputting it to the steering tie rod mechanism, thereby steering the car. Therefore, the steering gear is essentially a speed reduction transmission device. During vehicle operation, dust or water may be kicked up. Dust or water entering the connection between the tie rod and the housing can easily affect the steering gear's function. Therefore, a protective sleeve needs to be installed at the connection between the tie rod and the housing. This protective sleeve is generally corrugated and secured with cable ties; however, this simple cable tie binding does not guarantee a proper seal. Utility Model Content

[0003] Based on the above background, the purpose of this utility model is to provide a car steering system with protective functions.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A car steering system with protective function includes a housing and a steering shaft and tie rod disposed on the housing;

[0006] A protective assembly is provided at the connection between the housing and the pull rod. The protective assembly includes a dust cover, which is corrugated. A first connecting pipe and a second connecting pipe are respectively provided at both ends of the dust cover.

[0007] The interior of the first connecting tube is engaged with the first protrusion of the shell; a clamp is provided on the outside of the first connecting tube, and the first connecting tube and the first protrusion are engaged in the clamp;

[0008] Both the pull rod and the second connecting pipe are threaded on the outside, and the pull rod and the second connecting pipe are connected by a fastening nut.

[0009] Furthermore, one end of the dust cover is fixedly connected to the inner wall of the first connecting pipe, and the other end is fixedly connected to the inner wall of the second connecting pipe.

[0010] Furthermore, a concave ring is provided at the middle position of the first connecting tube, and the inner side of the concave ring is in contact with the side of the first protrusion.

[0011] The clamp includes two semicircular rings, one end of which is rotatably connected by a pivot, and the other end is fixed by a bolt;

[0012] The inner side of the clamp is provided with a slot;

[0013] The first connecting pipe at the end of the concave ring away from the dust cover is engaged with the first protrusion in the slot.

[0014] Furthermore, a first sealing gasket is provided on the side of the card slot away from the dust cover.

[0015] Furthermore, a second sealing gasket is provided on the inner wall of the end of the clamp away from the dust cover, and the side of the second sealing gasket abuts against the side of the housing.

[0016] Furthermore, a first reinforcing ring is provided on the outer side of the crest of the dust cover.

[0017] Furthermore, the inner wall of the dust cover at the trough is provided with a second reinforcing ring.

[0018] Furthermore, springs are provided at both ends of the inner wall of the dust cover to provide support.

[0019] This utility model has the following beneficial effects:

[0020] 1. The first connecting pipe and the first protrusion are fixed by clamps, and the second connecting pipe and the tie rod are fixed by fastening nuts. This not only strengthens the stability of the dustproof component connection, but also improves the sealing of both ends of the connection between the tie rod and the housing, preventing dust and other contaminants from entering the gap between the tie rod and the housing and affecting the performance of the steering gear.

[0021] 2. The first reinforcing ring, the second reinforcing ring, and the spring enhance the tensile strength of the dust cover, preventing the peaks and troughs of the dust cover from being stretched and causing breakage, thus improving the service life of the dust cover. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a front structural diagram of the present invention;

[0025] Figure 3 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 4 For the present utility model Figure 3 A magnified structural diagram at point A.

[0027] Wherein: 1. Housing; 11. Steering shaft; 12. Tie rod; 13. First protrusion;

[0028] 2. Protective components; 21. First connecting pipe; 22. Second connecting pipe; 23. Dust cover; 24. Clamp; 25. Fastening nut; 26. Concave ring; 27. Groove; 28. First sealing gasket; 29. ​​Second sealing gasket;

[0029] 31. First reinforcing ring; 32. Second reinforcing ring; 33. Spring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] like Figure 1-4As shown, a car steering gear with protective function includes a housing 1 and a steering shaft 11 and a tie rod 12 disposed on the housing 1; wherein the housing 1 is provided with a steering gear for controlling steering, the steering shaft 11 is the Zhuzhou for controlling direction, which is prior art and will not be described in detail, the tie rod 12 is rotatably connected to the housing 1, and a protective component 2 is provided at the connection between the housing 1 and the tie rod 12. The protective component 2 is used to prevent dust or water from entering the connection and causing damage to the connection between the housing 1 and the tie rod 12.

[0034] The protective component 2 includes a dust cover 23, which is a corrugated tube made of rubber. The dust cover 23 has a first connecting pipe 21 and a second connecting pipe 22 at both ends. One end of the dust cover 23 is fixedly connected to the inner wall of the first connecting pipe 21, and the other end is fixedly connected to the inner wall of the second connecting pipe 22. The connection method can be adhesive bonding. The connection between the dust cover 23 and the first connecting pipe 21 and the second connecting pipe 22 is sealed. The interior of the first connecting pipe 21 is connected to the inner wall of the housing 1. A protrusion 13 is correspondingly engaged; one end of the first connecting pipe 21 completely covers the outside of the first protrusion 13, and the inner wall of the first connecting pipe 21 is in contact with the outside of the first protrusion 13. A clamp 24 is provided on the outside of the first connecting pipe 21, and the first connecting pipe 21 and the first protrusion 13 are engaged in the clamp 24; the inner wall of the second connecting pipe 22 is in contact with the outside of the pull rod 12, and both the pull rod 12 and the second connecting pipe 22 are threaded. The pull rod 12 and the second connecting pipe 22 are connected by a fastening nut 25. The clamp 24 fixes the first connecting pipe 21 and the first protrusion 13, and the fastening nut 25 fixes the second connecting pipe 22 and the pull rod 12. This not only strengthens the stability of the dustproof component connection, but also improves the sealing at both ends of the connection between the pull rod 12 and the housing 1, preventing dust and other contaminants from entering the gap between the pull rod 12 and the housing 1 and affecting the performance of the steering gear.

[0035] The first connecting pipe 21 has a concave ring 26 at its middle position, and the inner side of the concave ring 26 fits against the side of the first protrusion 13, serving as a limiting element. The first connecting pipe 21 at the end of the concave ring 26 away from the dust cover 23 is sleeved with the first protrusion 13. The clamp 24 includes two semi-circular rings, one end of which is rotatably connected by a pivot, and the other end is fixed by a bolt. The inner side of the clamp 24 has a groove 27. The side of the groove 27 away from the dust cover 23 has a first sealing gasket 28, which fits against the side of the first protrusion 13 away from the dust cover 23. The inner wall of the end of the clamp 24 away from the dust cover 23 has a second sealing gasket 29, and the side of the second sealing gasket 29 abuts against the side of the housing 1. The first connecting pipe 21 at the end of the concave ring 26 away from the dust cover 23 and the first protrusion 13 are engaged in the groove 27. The sealing performance of the dustproof assembly is improved by the first sealing gasket 28 and the second sealing gasket 29.

[0036] The dust cover 23 is corrugated, including crests and troughs. A first reinforcing ring 31 is provided on the outer side of the crests, and a second reinforcing ring 32 is provided on the inner wall of the troughs. Springs 33 are provided at both ends of the inner wall of the dust cover 23 for support. The first reinforcing ring 31, the second reinforcing ring 32, and the springs 33 enhance the tensile strength of the dust cover 23, preventing it from tearing due to stretching at the crests and troughs, thus improving its service life.

[0037] The working principle of this utility model is as follows: When installing the dustproof component, the first connecting pipe 21 is inserted into the pull rod 12 and the housing 1 from the outer end of the pull rod 12. When the concave ring 26 abuts against the first protrusion 13, it plays a positioning role. The first connecting pipe 21 at the end of the concave ring 26 away from the dustproof cover 23 is correspondingly sleeved with the first protrusion 13 and then fixed by the clamp 24. The first connecting pipe 21 at the end of the concave ring 26 away from the dustproof cover 23 is engaged with the first protrusion 13 in the groove 27. The first sealing gasket 28 is in contact with the side of the first protrusion 13 away from the dustproof cover 23. The side of the second sealing gasket 29 abuts against the side of the housing 1. The clamp 24 is fixed by bolts. Then, the second connecting pipe 22 is moved to the threaded end of the pull rod 12, and the fastening nut 25 is tightened to fix the second connecting pipe 22 and the pull rod 12, thus completing the installation of the dustproof cover 23.

[0038] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A car steering gear with protective function, comprising a housing (1) and a steering shaft (11) and a tie rod (12) disposed on the housing (1); characterized in that: A protective component (2) is provided at the connection between the housing (1) and the pull rod (12). The protective component (2) includes a dust cover (23), which is corrugated. The dust cover (23) has a first connecting pipe (21) and a second connecting pipe (22) at its two ends. The interior of the first connecting pipe (21) is engaged with the first protrusion (13) of the housing (1); a clamp (24) is provided on the outside of the first connecting pipe (21), and the first connecting pipe (21) and the first protrusion (13) are engaged in the clamp (24); The outer sides of the pull rod (12) and the second connecting pipe (22) are both threaded, and the pull rod (12) and the second connecting pipe (22) are connected by a fastening nut (25).

2. The automotive steering system with protective function according to claim 1, characterized in that: One end of the dust cover (23) is fixedly connected to the inner wall of the first connecting pipe (21), and the other end is fixedly connected to the inner wall of the second connecting pipe (22).

3. The automotive steering system with protective function according to claim 1, characterized in that: The first connecting pipe (21) has a concave ring (26) in the middle position, and the inner side of the concave ring (26) is in contact with the side of the first protrusion (13); The clamp (24) includes two semicircular rings, one end of which is rotatably connected by a pivot, and the other end is fixed by a bolt; The clamp (24) has a groove (27) on its inner side; The first connecting pipe (21) of the concave ring (26) away from the dust cover (23) is engaged with the first protrusion (13) in the slot (27).

4. The automotive steering system with protective function according to claim 3, characterized in that: The slot (27) is provided with a first sealing gasket (28) on the side away from the dust cover (23).

5. The automotive steering system with protective function according to claim 4, characterized in that: The inner wall of the clamp (24) away from the dust cover (23) is provided with a second sealing gasket (29), and the side of the second sealing gasket (29) abuts against the side of the housing (1).

6. The automotive steering system with protective function according to claim 1, characterized in that: The dust cover (23) has a first reinforcing ring (31) on the outer side of the crest.

7. The automotive steering system with protective function according to claim 6, characterized in that: The inner wall of the dust cover (23) at the trough is provided with a second reinforcing ring (32).

8. The automotive steering system with protective function according to claim 7, characterized in that: Springs (33) are provided at both ends of the inner wall of the dust cover (23).

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