Novel automobile transmission shell structure

Abstract

The utility model belongs to the technical field of transmissions, and particularly discloses a novel automobile transmission shell structure which comprises a metal framework, the metal framework is a steel framework, the interior of the metal framework is filled with plastic filler, and the metal framework is fixed in an injection molding machine. And the injection molding machine fills the gaps in the metal framework with the plastic filler, a shell blank is formed after filling, and the shell blank is machined to form a shell finished product. A transmission shell is replaced by a steel framework and plastic filler filling mode, the steel framework is used for bearing the bearing force and ensuring that the strength and rigidity of the shell meet the use requirements, the plastic filler fills gaps of the steel framework, and due to the fact that plastic has good shock insulation performance, noise is sharply attenuated when being transmitted to the plastic, and the effect of reducing the noise is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of transmission, especially relates to a novel automobile transmission shell structure. BACKGROUND

[0002] With the market share of automobile rising greatly, the customer is more and more high to automobile noise requirement, and is more and more high to automobile quietness requirement, and for new energy automobile, the path of promoting the whole car NVH level is mainly through reasonable gear parameter and higher part processing quality to ensure, especially for the high requirement of gear processing precision, so as to increase the cost of gear processing. On the transmission route of noise, improvement can also achieve the purpose of reducing noise transmission to the driver's ear.

[0003] At present, the shell of automobile transmission generally adopts the process of aluminum alloy high-pressure casting, and the shell of aluminum alloy material is not good in the attenuation effect of sound wave and vibration in the sound wave transmission process, noise is easy to spread to the air through the shell, thereby transmitting to the driver's ear, causing the discomfort of the driver. UTILITY MODEL CONTENTS

[0004] The utility model discloses a novel automobile transmission shell structure to solve the problem that the attenuation effect of sound wave and vibration is not good in the sound wave transmission process of the shell of aluminum alloy material, noise is easy to spread to the air through the shell, thereby transmitting to the driver's ear, causing the discomfort of the driver.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows: a novel automobile transmission shell structure, comprising a metal framework, the inside of the metal framework is filled with plastic filling material, and the shell blank is formed after filling, and the shell finished product is formed after machining of the shell blank.

[0006] Further, the metal framework is fixed in the inside of injection molding machine, and the plastic filling material fills the gap in the inside of the metal framework.

[0007] Further, the metal framework adopts a steel framework.

[0008] Further, the plastic filling material adopts polypropylene, polyethylene, ABS, polycarbonate, polystyrene or polyamide.

[0009] Further, the metal framework adopts casting forming.

[0010] The beneficial effect of this technical solution is that the transmission housing is replaced with a steel frame + plastic filler. The steel frame is used to bear the bearing force to ensure that the strength and stiffness of the housing meet the use requirements. The plastic filler fills the gaps in the steel frame. Since plastic has good seismic isolation performance, the noise is sharply attenuated when transmitted to the plastic, thereby achieving the effect of reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a novel automobile transmission housing structure according to the present utility model;

[0012] Figure 2 for Figure 1 Schematic diagram of the structure of the metal skeleton;

[0013] Figure 3 for Figure 1 Schematic diagram of the final structure of the injection-molded plastic filling material. DETAILED DESCRIPTION

[0014] The following is further described in detail through specific implementation methods:

[0015] The reference numerals in the drawings of the specification include: metal skeleton 1, plastic filler 2.

[0016] 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.

[0017] The embodiment is basically as shown in the attached Figure 1 The figure shows a novel automotive transmission housing structure comprising a metal frame 1 (specifically, a steel frame formed by casting). The interior of the metal frame 1 is filled with a plastic filler 2. Specifically, the metal frame 1 is fixed in place within an injection molding machine, which then fills the gaps within the metal frame 1 with the plastic filler 2. This filler forms a housing blank, which is then machined to form the finished housing. The plastic filler 2 is made of polypropylene, polyethylene, ABS, polycarbonate, polystyrene, or polyamide.

[0018] The transmission housing is replaced with a steel frame + plastic filler 2 filling form. The steel frame is used to bear the bearing force to ensure that the strength and stiffness of the housing meet the use requirements. The plastic filler 2 fills the gaps in the steel frame. Since plastic has good seismic isolation performance, the noise is sharply attenuated when transmitted to the plastic, thereby achieving the effect of reducing noise.

[0019] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0020] The above is only the embodiment of the present application, and the common knowledge of the specific structure and characteristics in the scheme is not described in detail, the ordinary skilled in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field and has the ability to apply the conventional experimental means before the date, the ordinary skilled in the art can improve and implement the present scheme under the inspiration given by the present application combined with their own ability, some typical known structure or known method should not be an obstacle for the ordinary skilled in the art to implement the present application. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A novel automobile transmission case structure characterized by: The application relates to a metal skeleton (1) which is filled with a plastic filler (2) in the interior, and the metal skeleton (1) is filled with the plastic filler (2) to form a shell blank, and the shell blank is machined to form a shell product.

2. A novel automobile transmission housing structure according to claim 1, characterized by: The metal skeleton (1) is fixed in an injection molding machine, and the injection molding machine fills the metal skeleton (1) with the plastic filler (2) to fill the gap in the interior of the metal skeleton (1).

3. A novel automobile transmission housing structure according to claim 1, characterized in that: The metal skeleton (1) is a steel skeleton.

4. The novel automobile transmission housing structure according to claim 1, characterized by: The plastic filler (2) is polypropylene, polyethylene, ABS, polycarbonate, polystyrene or polyamide.

5. The novel automobile transmission housing structure according to claim 1, characterized by: The metal skeleton (1) is cast into shape.

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