Steering gear sealing assembly

Abstract

The utility model discloses a steering gear sealing assembly which comprises a steering shell and a dust cover, an annular groove is formed in the peripheral wall of the end, facing the dust cover, of the steering shell, and a protruding ring matched with the annular groove is arranged on the inner peripheral wall of the dust cover. A limiting ring groove is formed in the outer circumferential wall of the steering shell, a fastener is installed in the limiting ring groove, a sealing ring is installed in the sealing ring groove, and the depth of the sealing ring groove is larger than that of the annular groove. The fastener clamps the dust cover, the inner peripheral wall of the dust cover and the outer peripheral wall of the steering gear shell are extruded to form a sealed space, the annular groove is matched with the convex ring, and the sealing ring groove is matched with the sealing ring to jointly form a sealing isolation layer, so that the dust cover and the steering gear shell are in a sealed state, and the firmness of connection between the dust cover and the steering gear shell is improved through the fastener. And the sealing effect of the dustproof cover on the steering shell is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a steering gear sealing component. Background Art

[0002] The steering wheel of the automobile steering gear operates the gear in the steering gear to rotate, and the gear is tightly meshed with the rack, pushing the rack to move left or right, driving the steering wheel to swing. During the whole process, the dust cover is stretched and compressed as the rack moves left and right. Patent CN201220259494.1 has been applied for to disclose a sealing structure of a steering gear and a dust cover. The outer wall of the steering housing 1 is provided with a convex ring 3, and the inner wall of the dust cover 2 is provided with an annular groove matching the convex ring 4. Since the dust cover of the automobile steering gear is installed between the rack and the pull rod, the annular groove of the dust cover and the convex ring 4 on the steering gear are prone to loosening after long-term reciprocating stretching and compression work, resulting in poor matching effect between the dust cover and the steering gear housing, reduced sealing, and dust and foreign matter easily entering the dust cover, reducing the service life of the steering gear. Utility Model Content

[0003] 1. Technical problems to be solved by the utility model

[0004] In view of the above technical problems, the utility model provides a steering gear sealing assembly, which increases the firmness of the connection between the dust cover and the steering housing, and ensures the sealing effect of the dust cover on the steering housing.

[0005] 2. Technical solution

[0006] To solve the above problems, the technical solution provided by the utility model is: a steering gear sealing assembly, comprising a steering housing and a dust cover, the outer peripheral wall of the steering housing facing one end of the dust cover is provided with an annular groove, the inner peripheral wall of the dust cover is provided with a convex ring matching with the annular groove, the outer peripheral wall of the dust cover is provided with a limiting ring groove, a fastener is installed in the limiting ring groove, the outer peripheral wall of the steering housing is provided with a sealing ring groove, a sealing ring is installed in the sealing ring groove, and the depth of the sealing ring groove is greater than the depth of the annular groove.

[0007] Optionally, the fastener includes an outer ring and an inner ring integrally connected to the outer ring, the outer ring is provided with a plurality of slots spaced apart along the length direction, and the inner ring is provided with a locking protrusion that cooperates with the slots.

[0008] Optionally, a sliding groove is provided on the inner wall of the outer ring, and a sliding tongue is provided at the tail of the inner ring, and two sides of the sliding tongue respectively slide against the groove walls of the sliding groove.

[0009] Optionally, the outer ring includes a first ring, a tightening member and a second ring connected in sequence, the first ring is provided with the slot, the second ring is provided with the slide slot, and the second ring is connected to the inner ring, the tightening member has a first state that makes the first ring and the second ring move away from each other, and the tightening member also has a second state that makes the first ring and the second ring move closer to each other.

[0010] Optionally, the tightening member has an open end and a closed end, one side of the open end is connected to the first connecting loop, and the other side of the open end is connected to the second connecting loop, when the tightening member is in a first state, the two sides of the open end are far away from each other, and when the tightening member is in a second state, the two sides of the open end are close to each other.

[0011] Optionally, the closed end is provided with a reinforcing rib.

[0012] Optionally, there are multiple sealing ring grooves and sealing rings, and the sealing ring grooves and sealing rings are arranged in a one-to-one correspondence.

[0013] Optionally, the height of the sealing ring is greater than the depth of the sealing ring groove.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0016] The steering gear sealing assembly proposed in the embodiment of the present application, the fasteners clamp the dust cover, the inner circumferential wall of the dust cover and the outer circumferential wall of the steering gear housing are squeezed to form a sealed space, the cooperation between the annular groove and the convex ring, and the cooperation between the sealing ring groove and the sealing ring jointly form a sealing isolation layer, so that the dust cover and the steering housing are in a sealed state, the fasteners increase the firmness of the connection between the dust cover and the steering housing, and ensure the sealing effect of the dust cover on the steering housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the sealing structure mentioned in the background technology;

[0018] Figure 2 A schematic diagram of a steering gear sealing assembly proposed in an embodiment of the utility model;

[0019] Figure 3 An exploded view of the steering gear seal assembly proposed in an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of a tightening member of a steering gear sealing assembly provided in an embodiment of the utility model in a first state;

[0021] Figure 5 A schematic diagram of the tightening member of the steering gear sealing assembly proposed in an embodiment of the utility model in the second state.

[0022] The marks in the accompanying drawings are: 1. steering housing; 2. dust cover; 3. convex ring; 4. annular groove; 5. limiting ring groove; 6. fastener; 61. outer ring; 611. first connecting ring; 612. tightening piece; 613. second connecting ring; 614. slide groove; 615. open end; 616. reinforcing rib; 62. inner ring; 621. sliding tongue; 63. slot; 64. convex; 7. sealing ring groove; 8. sealing ring. DETAILED DESCRIPTION

[0023] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0025] Example 1

[0026] Combined with Figure 2 and 3The steering gear sealing assembly of this embodiment comprises a steering housing 1 and a dust cover 2. The outer peripheral wall of the steering housing 1 facing one end of the dust cover 2 is provided with an annular groove 4. The inner peripheral wall of the dust cover 2 is provided with a convex ring 3 matched with the annular groove 4. The outer peripheral wall of the dust cover 2 is provided with a limiting ring groove 5. A fastener 6 is installed in the limiting ring groove 5. The outer peripheral wall of the steering housing 1 is provided with a sealing ring groove 7. A sealing ring 8 is installed in the sealing ring groove 7. The depth of the sealing ring groove 7 is greater than the depth of the annular groove 4. The fastener 6 clamps the dust cover 2. The inner peripheral wall of the dust cover 2 and the outer peripheral wall of the steering gear housing are squeezed to form a sealed space. The cooperation of the annular groove 4 and the convex ring 3, and the cooperation of the sealing ring groove 7 and the sealing ring 8 jointly form a sealing isolation layer, so that the dust cover 2 and the steering housing 1 are in a sealed state. The fastener 6 increases the firmness of the connection between the dust cover 2 and the steering housing 1, ensuring the sealing effect of the dust cover 2 on the steering housing 1.

[0027] In this embodiment, if Figure 4 and 5 As shown, the fastener 6 comprises an outer ring 61 and an inner ring 62 integrally connected to the outer ring 61, the outer ring 61 is provided with a plurality of slots 63 at intervals along the length direction, and the inner ring 62 is provided with a cam 64 matched with the slots 63. The outer ring 61 is wound in the sealing ring groove 7 of the outer peripheral wall of the dust cover 2, the outer ring 61 and the inner ring 62 are integrally formed and connected, the outer wall of the inner ring 62 overlaps the inner wall of the outer ring 61, as the fastener 6 is tightened, the length of the outer ring 61 decreases, the length of the inner ring 62 increases, and the cam 64 on the inner ring 62 is snapped into the slot 63 at a suitable position, so that the dust cover 2 and the steering housing 1 are fastened.

[0028] In this embodiment, if Figure 4 and 5 As shown, the inner wall of the outer ring 61 is provided with a slide groove 614, and the tail of the inner ring 62 is provided with a slide tongue 621, and the two sides of the slide tongue 621 slide against the groove wall of the slide groove 614 respectively. As the fastener 6 is tightened, the length of the outer ring 61 decreases, and the length of the inner ring 62 increases. The slide groove 614 has a certain length, and the tail of the inner ring 62 refers to the end of the inner ring 62 away from the outer ring 61. The width of the slide tongue 621 is smaller than the width of the inner ring 62. The slide tongue 621 moves along the slide groove 614 to accommodate the inner ring 62.

[0029] In this embodiment, if Figure 4 and 5As shown, the outer ring 61 includes a first connecting ring 611, a tightening member 612 and a second connecting ring 613 connected in sequence, the first connecting ring 611 is provided with the clamping groove 63, the second connecting ring 613 is provided with the sliding groove 614, and the second connecting ring 613 is connected to the inner ring 62, the tightening member 612 has a first state that makes the first connecting ring 611 and the second connecting ring 613 move away from each other, and the tightening member 612 also has a second state that makes the first connecting ring 611 and the second connecting ring 613 move closer to each other. The fastener 6 is wound around the outer peripheral wall of the dust cover 2, and the tightening member 612 is in the first state. When the clamping protrusion 64 on the inner ring 62 is clamped into the clamping groove 63, the tightening member 612 is in the second state, so that the first connecting ring 611 and the second connecting ring 613 move closer to each other, so that the fastener 6 is further tightened, and the fastening effect is increased.

[0030] In this embodiment, if Figure 4 and 5 As shown, the tightening member 612 has an open end 615 and a closed end, one side of the open end 615 is connected to the first connecting ring 611, and the other side of the open end 615 is connected to the second connecting ring 613. When the tightening member 612 is in the first state, the two sides of the open end 615 are far away from each other, and when the tightening member 612 is in the second state, the two sides of the open end 615 are close to each other. The tightening member 612 is made of a rigid material, and when switching from the first state to the second state, it can be clamped on both sides of the open end 615 by a clamp to make the two sides of the open end 615 close to each other.

[0031] In this embodiment, if Figure 4 and 5 As shown, the closed end is provided with a reinforcing rib 616. The reinforcing rib 616 of the closed end increases the rigidity of the closed end, and when deformation occurs on both sides of the open end 615, the closed end is not easily deformed.

[0032] In this embodiment, the number of the sealing ring grooves 7 and the number of the sealing rings 8 are both plural, and the sealing ring grooves 7 and the sealing rings 8 are arranged in a one-to-one correspondence.

[0033] In this embodiment, if Figure 3 As shown, the height of the sealing ring 8 is greater than the depth of the sealing ring groove 7 .

[0034] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A steering gear seal assembly, comprising a steering housing and a dust cover, wherein an annular groove is provided on the outer peripheral wall of the steering housing facing one end of the dust cover, and a convex ring is provided on the inner peripheral wall of the dust cover to cooperate with the annular groove, characterized in that: The outer peripheral wall of the dust cover is provided with a limiting ring groove, in which a fastener is installed, the outer peripheral wall of the steering housing is provided with a sealing ring groove, in which a sealing ring is installed, and the depth of the sealing ring groove is greater than the depth of the annular groove.

2. The steering gear seal assembly according to claim 1, characterized in that: The fastener comprises an outer ring and an inner ring integrally connected to the outer ring, the outer ring is provided with a plurality of slots spaced apart along the length direction, and the inner ring is provided with a locking protrusion matched with the slots.

3. The steering gear seal assembly according to claim 2, characterized in that: The inner wall of the outer ring is provided with a sliding groove, the tail of the inner ring is provided with a sliding tongue, and the two sides of the sliding tongue are respectively slidably abutted against the groove wall of the sliding groove.

4. The steering gear seal assembly according to claim 3, characterized in that: The outer ring includes a first ring, a tightening member and a second ring connected in sequence, the first ring is provided with the clamping groove, the second ring is provided with the sliding groove, and the second ring is connected to the inner ring, the tightening member has a first state that makes the first ring and the second ring move away from each other, and the tightening member also has a second state that makes the first ring and the second ring move closer to each other.

5. The steering gear seal assembly according to claim 4, characterized in that: The tightening member has an open end and a closed end, one side of the open end is connected to the first connecting loop, and the other side of the open end is connected to the second connecting loop. When the tightening member is in a first state, the two sides of the open end are far away from each other, and when the tightening member is in a second state, the two sides of the open end are close to each other.

6. The steering gear seal assembly according to claim 5, characterized in that: The closed end is provided with a reinforcing rib.

7. The steering gear seal assembly according to claim 1, characterized in that: The number of the sealing ring grooves and the sealing rings are both multiple, and the sealing ring grooves and the sealing rings are arranged in a one-to-one correspondence.

8. The steering gear seal assembly according to claim 1, characterized in that: The height of the sealing ring is greater than the depth of the sealing ring groove.

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