Noise reduction steering housing

Abstract

The utility model discloses a noise reduction steering shell which comprises a body, the body is provided with a containing cavity, a noise reduction assembly is arranged on the inner wall of the containing cavity, the noise reduction assembly comprises a second noise reduction layer and a first noise reduction layer, one side of the second noise reduction layer is attached to the inner wall of the containing cavity, and the other side of the second noise reduction layer is attached to the first noise reduction layer. The driving wheel, the driven wheel and the transmission belt are installed in the containing cavity, the noise reduction assembly can conduct two-layer noise reduction treatment on the interior of the containing cavity, noise generated in the transmission process of the driving wheel, the driven wheel and the synchronous belt is effectively reduced, and the problem of noise pollution is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gear accessories, in particular to a noise-reducing steering housing. Background Art

[0002] An electric power steering is a power steering system that provides auxiliary torque through an electric motor, which has the advantages of low fuel consumption, good steering followability, high operation stability, etc. The electric power steering includes a rack-type electric power steering (REPS), and the REPS can provide a large torque and has a good boosting effect, so it is mostly used in occasions with high requirements, such as high-class cars, commercial vehicles, etc. During the use of the REPS, noise will be generated. When the vehicle steers, the rotation of the motor shaft drives parts such as the driving wheel, the driven wheel, and the transmission belt to transmit in sequence, so that the ball nut rotates, and drives the rack rod connecting the wheels to reciprocate, thereby driving the wheels to steer. During the transmission of parts, a sound similar to the friction of a grindstone will be generated, which is called steering operation noise, thus affecting the noise performance of the whole vehicle. Content of the Utility Model

[0003] 1. Technical Problems to be Solved by the Utility Model

[0004] In view of the above technical problems, the utility model provides a noise-reducing steering housing, which effectively reduces the noise generated during the transmission of the driving wheel, the driven wheel, and the synchronous belt.

[0005] 2. Technical Solutions

[0006] To solve the above problems, the technical solution provided by the utility model is: a noise-reducing steering housing, including a body, the body has a cavity, a noise reduction component is provided on the inner wall of the cavity, the noise reduction component includes a second noise reduction layer and a first noise reduction layer, one side of the second noise reduction layer is attached to the inner wall of the cavity, and the other side of the second noise reduction layer is attached to the first noise reduction layer.

[0007] Optionally, the contour shapes of the first noise reduction layer and the second noise reduction layer are consistent with the contour shape of the cavity.

[0008] Optionally, the manufacturing material of the second noise reduction layer is felt or spun felt, the thickness of the second noise reduction layer is greater than or equal to 1 mm and less than or equal to 5 mm.

[0009] Optionally, the manufacturing material of the first noise reduction layer is open-cell foam or sponge, the thickness of the first noise reduction layer is greater than or equal to 3 mm and less than or equal to 6 mm.

[0010] Optionally, the noise reduction component further includes an adhesive layer, and the adhesive layer covers both sides of the second noise reduction layer respectively.

[0011] Optionally, the adhesive layer is a hot melt adhesive layer or a pressure-sensitive adhesive layer.

[0012] Optionally, the body is provided with a through hole for the lead screw to pass through, and a ring groove for installing a sealing ring is provided along the circumferential direction at one end of the body away from the through hole.

[0013] Optionally, the body is provided with a plurality of screw holes for installing screws along the circumferential direction.

[0014] 3. Beneficial effects

[0015] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0016] In the noise reduction steering housing proposed in the embodiment of the present application, a driving wheel, a driven wheel and a transmission belt are installed in the cavity. The noise reduction component can perform two-layer noise reduction treatment on the cavity, effectively reducing the noise generated by the driving wheel, the driven wheel and the synchronous belt during the transmission process, and solving the problem of noise pollution. Description of the drawings

[0017] Figure 1 It is a schematic structural diagram of the noise reduction steering housing proposed in the embodiment of the present utility model.

[0018] Figure 2 It is a schematic diagram of the noise reduction component of the noise reduction steering housing proposed in the embodiment of the present utility model.

[0019] The marks in each drawing are: 1. Body; 11. Through hole; 12. Ring groove; 13. Screw hole; 2. Second noise reduction layer; 3. First noise reduction layer; 4. Adhesive layer. Detailed implementation manners

[0020] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the drawings and embodiments.

[0021] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for the sake of convenience of description, only the parts related to the utility model are shown in the drawings. The terms "first", "second", etc. 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, without conflict, the embodiments and features in the embodiments of 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 positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "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 "installation", "connection", "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradiction or conflict, and all are within the scope of protection required by the present utility model.

[0022] Embodiment 1

[0023] Combined with the attached Figure 1 and 2 , the noise reduction steering housing of this embodiment includes a body 1. The body 1 has a cavity, and a noise reduction component is provided on the inner wall of the cavity. The noise reduction component includes a second noise reduction layer 2 and a first noise reduction layer 3. One side of the second noise reduction layer 2 is attached to the inner wall of the cavity, and the other side of the second noise reduction layer 2 is attached to the first noise reduction layer 3. A driving wheel, a driven wheel, and a transmission belt are installed in the cavity. The noise reduction component can perform two-layer noise reduction processing on the cavity, effectively reducing the noise generated by the driving wheel, the driven wheel, and the synchronous belt during the transmission process, and solving the problem of noise pollution.

[0024] In this embodiment, combined with the attached Figure 1The first noise reduction layer 3 and the second noise reduction layer 2 have contours that are consistent with the contours of the cavity. The first noise reduction layer 3 and the second noise reduction layer 2 are formed by stamping into a cavity contour structure and embedded in the cavity to reduce noise generated in the cavity.

[0025] In this embodiment, combined with the Figure 2 The second noise reduction layer 2 is made of felt, and the thickness of the second noise reduction layer 3 is greater than or equal to 1 mm and less than or equal to 5 mm. Felt has a good shock absorption effect. In other embodiments, the second noise reduction layer 2 can be made of woven felt.

[0026] In this embodiment, combined with the Figure 2 The first noise reduction layer 3 is made of open-cell foam. The thickness of the first noise reduction layer 2 is greater than or equal to 3 mm and less than or equal to 6 mm. The open-cell foam used is a flexible melamine resin open-cell foam, which has excellent sound absorption and can achieve a good noise reduction effect. In other embodiments, the first noise reduction layer 3 can be sponge.

[0027] In this embodiment, combined with the Figure 2 The noise reduction assembly further includes an adhesive layer 4, which covers both sides of the second noise reduction layer 2. One side of the second noise reduction layer 2 is bonded to the inner cavity of the shell through the adhesive layer 4, and the other side of the second noise reduction layer 2 is bonded to the second noise reduction layer 2 through the adhesive layer 4.

[0028] In this embodiment, the adhesive layer 4 is a hot melt adhesive layer or a pressure sensitive adhesive layer.

[0029] In this embodiment, combined with the Figure 1 The body 1 is provided with a through hole 11 for the screw rod to pass through. The end of the body 1 away from the through hole 11 is circumferentially provided with an annular groove 12 for mounting a sealing ring. The body 1 is connected to the main housing through a screw hole 13. The sealing ring seals the connection between the body 1 and the main housing to prevent dust from entering.

[0030] In this embodiment, combined with the Figure 1 The main body 1 is provided with a plurality of screw holes 13 for installing screws along the circumference.

[0031] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A noise-reducing steering housing, comprising a body having a cavity, characterized in that, The inner wall of the cavity is provided with a noise reduction component, and the noise reduction component includes a second noise reduction layer and a first noise reduction layer. One side of the second noise reduction layer is attached to the inner wall of the cavity, and the other side of the second noise reduction layer is attached to the first noise reduction layer; The contour shapes of the first noise reduction layer and the second noise reduction layer are consistent with the contour shape of the cavity; The production material of the second noise reduction layer is felt or spun felt. The thickness of the second noise reduction layer is greater than or equal to 1 mm and less than or equal to 5 mm; The production material of the first noise reduction layer is open-cell foam or sponge. The thickness of the first noise reduction layer is greater than or equal to 3 mm and less than or equal to 6 mm.

2. The noise reduction steering housing according to claim 1, characterized in that, The noise reduction component further includes an adhesive layer, and the adhesive layer covers both sides of the second noise reduction layer respectively.

3. The noise reduction steering housing according to claim 2, characterized in that, The adhesive layer is a hot melt adhesive layer or a pressure sensitive adhesive layer.

4. The noise reduction steering housing according to claim 1, characterized in that: The body is provided with a through hole for the lead screw to pass through, and a ring groove for installing a sealing ring is provided along the circumference at one end of the body away from the through hole.

5. The noise reduction steering housing according to claim 1, wherein The body is provided with a plurality of screw holes for installing screws along the circumference.

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