Steering intermediate shaft sheath with high sealing performance

Abstract

The utility model discloses a steering intermediate shaft sheath with high sealing performance, which comprises a metal plate, an upper dust cover, a metal shaft seal assembly and a metal hoop, the upper dust cover is clamped on the metal plate through three rubber staple bolt structures, the metal shaft seal assembly is assembled in the upper dust cover through interference, and then the metal hoop is used for tightening, so that the metal shaft seal assembly is fixed on the metal plate. The metal shaft seal assembly comprises an outer ring, a sealing ring, a ball bearing, a gasket, a rubber gasket and lubricating grease. The steering intermediate shaft sheath assembly is fixed with the automobile dash panel through three holes of the metal plate, the upper dust cover is sealed with the dash panel, the metal shaft seal assembly is in interference fit with the automobile intermediate shaft, and the rotating function of the intermediate shaft is achieved. The steering intermediate shaft sheath with the high sealing performance has the advantages of being easy to assemble, economical, practical, good in dustproof and noise reduction effect, high in waterproof grade and capable of meeting the I PX7 waterproof grade.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steam accessory, specifically relates to a high sealing performance's steering intermediate shaft protective sleeve. BACKGROUND

[0002] With the continuous improvement of living standards, the increase of outdoor activities, the high-end car type such as cross-country gradually increases the comfort requirement of customers to the car increasingly higher. Now the noise of middle and low grade family car, the poor sealing is the common problem. The steering intermediate shaft protective sleeve of car is installed between the engine compartment and the cockpit part, mainly plays the role of water isolation, sound insulation, dust prevention, and its quality directly influences the sealing and noise level of whole car.

[0003] In order to control the sealing and noise of whole car, the utility model provides an economic practical, dustproof, good noise reduction effect, high waterproof grade, can satisfy IPX7 waterproof grade steering intermediate shaft protective sleeve assembly. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high sealing performance's steering intermediate shaft protective sleeve, solves the following technical problem: now the noise of middle and low grade family car is generally big, and the sealing is not good.

[0005] The purpose of the utility model can be realized through the following technical scheme:

[0006] A high sealing performance's steering intermediate shaft protective sleeve, including metal sheet, be provided with upper dust cover, metal clamp and metal shaft seal assembly on the metal sheet, the upper dust cover is combined on the metal sheet through three rubber clamping structures, the metal shaft seal assembly is assembled in the inside of upper dust cover through interference, the metal shaft seal assembly includes outer ring, sealing ring, ball bearing, washer, rubber washer and lubricating grease.

[0007] As a further scheme of the utility model: the rubber clamping structure on the upper dust cover is used for metal sheet buckle structure installation.

[0008] As a further scheme of the utility model: the metal shaft seal assembly is fixed with clamp after assembling with upper dust cover.

[0009] As a further scheme of the utility model: the sealing ring is assembled with interference with the outer ring.

[0010] As a further scheme of the utility model: the sealing ring circumferential is the lip design of sawtooth, and rubber lip is sealed with interference with intermediate shaft.

[0011] As a further scheme of the utility model: the rubber lip inner circle is injected with lubricating grease.

[0012] As a further scheme of the utility model: the metal plate, the upper dust cover and the metal shaft seal assembly are coaxial design.

[0013] As a further scheme of the utility model: the diameter of the upper dust cover is greater than the diameter of the metal shaft seal assembly.

[0014] The utility model discloses beneficial effect:

[0015] (1) the utility model has the characteristics of easy assembly, economic and practical, dustproof, good noise reduction effect, high waterproof grade, three rubber clamping structures are used to clamp the upper dust cover on the metal plate, the stable fixation and sealing performance of the upper dust cover are ensured, and the upper dust cover is easy to install, the damping and noise reduction efficiency are good, the metal shaft seal assembly is fixed after being assembled with the upper dust cover through the metal clamp, the product is prevented from rotating and falling off during use, the interference assembly is used between the sealing ring and the outer ring, the sealing ring and the outer ring are prevented from rotating and falling off during use, the sealing performance of the overall structure is improved, the serrated lip of the sealing ring is used, when the three directions of the vehicle body are assembled within the limit of ±5mm during the use of the whole vehicle, the interference sealing between the rubber lip and the intermediate shaft is not only ensured to prevent water, but also is more stable when the torque is transmitted, the lubricating grease is injected in the inner circle of the rubber lip, the friction resistance is reduced, the torque is stably transmitted when the two relatively move, the torque transmission efficiency is effectively improved, and the torque requirement is satisfied. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described below in combination with the drawings.

[0017] Fig. 1 It is the overall structure schematic view of the utility model;

[0018] Fig. 2 It is the section structure schematic view of the utility model;

[0019] Fig. 3 It is the section structure schematic view of the bearing assembly of the utility model.

[0020] In the drawing: 1, metal plate;2, upper dust cover;3, metal clamp;4, metal shaft seal assembly;5, outer ring;6, sealing ring;7, ball bearing;8, washer;9, rubber washer;10, lubricating grease. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0022] Please refer to Figs. 1-3 As shown in the figure, the utility model discloses a kind of steering intermediate shaft sheath of high sealing performance, including sheet metal 1, upper dust cover 2 is provided on the sheet metal 1, the upper dust cover 2 is clamped on sheet metal 1 by three rubber clamping structures, metal shaft seal assembly 4 is assembled into product by interference, metal shaft seal assembly 4 includes outer ring 5, sealing ring 6, ball bearing 7, washer 8, rubber washer 9 and lubricating grease 10.

[0023] The rubber clamping structure on the upper dust cover 2 is used for the installation of the sheet metal 1 buckle structure, the dust cover is connected with the sheet metal 1 through buckling, which simplifies installation and disassembly, efficiently assembles, improves production efficiency, and at the same time, ensures that the connecting piece remains stable during vibration and movement.

[0024] The metal clamping hoop 3 is used to fix the metal shaft seal assembly 4 and the upper dust cover 2 after the metal shaft seal assembly 4 and the upper dust cover 2 are assembled, which can ensure that the connecting piece metal shaft seal assembly 4 and the upper dust cover 2 remain stable during vibration or movement, and ensure that no circumferential rotation and shedding occurs during use.

[0025] The sealing ring 6 is interference-fitted with the outer ring 5 to form a tight fit, improve strength and stability, and ensure that no circumferential rotation and shedding occurs during use.

[0026] The serrated lip of the sealing ring 6 meets the assembly limit of ±5mm in three directions of the vehicle body during use of the vehicle, and the rubber lip is interference-fitted with the intermediate shaft, thereby ensuring the overall waterproofness and torque requirements.

[0027] The inner circle of the rubber lip is injected with lubricating grease 10, which reduces the friction between the rubber lip and the shaft, prolongs the service life of the sealing element, and at the same time, ensures the torque transmission of the rubber lip and the intermediate shaft.

[0028] The center axis of the sheet metal 1, the upper dust cover 2 and the metal shaft seal assembly 4 is on the same straight line, and the diameter of the upper dust cover 2 is greater than the diameter of the metal shaft seal assembly 4.

[0029] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0030] The above has described in detail one embodiment of the utility model, but the content described is only a preferred embodiment of the utility model, and cannot be considered as limiting the scope of the utility model. Any equivalent changes and improvements made within the scope of the utility model application shall still belong to the patent coverage range of the utility model.

Claims

1. A high sealing performance steering intermediate shaft boot, characterized by, Including metal plate (1), be provided with upper dust cover (2), metal clamp (3) and metal shaft seal assembly (4) on metal plate (1), upper dust cover (2) is clamped on metal plate (1) through three rubber peg structure, metal shaft seal assembly (4) is assembled in the inside of upper dust cover (2) through interference, metal shaft seal assembly (4) includes outer ring (5), sealing ring (6), ball bearing (7), washer (8), rubber washer (9) and lubricating grease (10).

2. A high sealing performance steering intermediate shaft boot according to claim 1, characterized in that, The rubber peg structure on the upper dust cover (2) is used for the buckle structure installation of the metal plate (1).

3. A high sealing performance steering intermediate shaft boot as claimed in claim 1, wherein, The metal shaft seal assembly (4) is fixed with the clamp after being assembled with the upper dust cover (2).

4. A high sealing performance steering intermediate shaft boot as claimed in claim 1, wherein, The sealing ring (6) is assembled with the outer ring (5) through interference.

5. A high sealing performance steering intermediate shaft boot as claimed in claim 1, wherein, The sealing ring (6) is designed as a sawtooth-shaped lip on the circumference, and the rubber lip is interference sealed with the intermediate shaft.

6. A high sealing performance steering intermediate shaft boot according to claim 5, characterized in that, The inner circle of the rubber lip is injected with lubricating grease (10).

7. A high sealing performance steering intermediate shaft boot as claimed in claim 1, wherein, The metal plate (1), the upper dust cover (2) and the metal shaft seal assembly (4) are coaxial design.

8. A high sealing performance steering intermediate shaft boot as claimed in claim 1, wherein, The diameter of the upper dust cover (2) is greater than the diameter of the metal shaft seal assembly (4).

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