FR2777629A1 - Engine crankcase or transmission system housing - Google Patents

Abstract

The crankcase or transmission housing (1) is made from a transparent plastic, produced by molding, thermoforming or injection. It has holes for fixings (3), a mechanical component (4) and a shaft (5), all the holes being lined with metal reinforcing elements. The housing can also be used to cover an internal lamp (6).

Description

I (C) Housing, in particular of engine or transmission, in particular for

  The present invention relates to a housing, in particular for

  agricultural vehicle or machine.

  It relates more particularly to a vehicle casing

motor.

  Vehicles, such as automobiles, trucks, mopeds, scooters, motorcycles or bicycles, are always fitted with a casing to mask in particular the engine or transmission components or the mechanical parts of the vehicle. The same is true for agricultural work machines such as two-wheel tractors, lawn mowers, etc. Until now, these housings were made30 of sheet steel or aluminum. However, such casings have a large number of drawbacks. Disadvantage

  major of such casings is related to their significant weight. Furthermore, such casings do not make it possible to view the operation or the level of wear of some of the mechanical parts so that it is necessary to dismantle the casing to check the state of said parts.

  Some parts hidden by the housing can also be accessed from outside the housing. However, the 2 adjustment of the positioning of said parts inside the

  casing can not be done from outside the casing by viewing the positioning of said parts.

  The object of the present invention is therefore to overcome the aforementioned drawbacks by proposing a casing the

  design allows visualization of the mechanical parts masked by said casing, whether these parts are stopped or in motion, so as to visually control the level of wear and the operation of these parts.

  Another object of the invention is to propose a casing whose

the weight is reduced.

  To this end, the subject of the invention is a casing, in particular a motor or a transmission, in particular for

  vehicles or machines for agricultural work, characterized in that the casing is made of a transparent plastic material.

  According to a preferred embodiment of the invention, the transparent plastic material constituting the casing is a transparent thermoplastic material chosen from the family of acrylic compounds such as polymethyl methacrylate and / or styrenic compounds such as polystyrene and / or vinyl compounds such as polyvinyl chloride and / or polyolefins such

  than polyethylene terephthalate and / or polyamides and / or polycarbonates.

  3 (0 The invention will be clearly understood on reading the following description of exemplary embodiments, in

  reference to the single figure which represents a perspective view of a transparent casing mounted on a reduction gear and in accordance with the invention. The casing, object of the invention, represented in 1 in the single figure, can be a conventional casing already used on vehicles or a new form of housing. This housing intended in particular to protect the mechanism of the motor vehicle is made of a transparent plastic material. This transparent plastic material is preferably chosen from the family of acrylic compounds such as polymethyl methacrylate and / or styrenic compounds such as polystyrene and / or vinyl compounds such as polyvinyl chloride and / or polyolefins such as polyethylene terephthalate and / or polyamides and / or polycarbonates. I) For the production of the casing, the plastic

  transparent constituting said housing is molded or formed or thermoformed or injected.

  Furthermore, due to its transparent nature, this casing can be shaped to cover a device.

  lighting 6 integrated into said vehicle. This gives a vehicle equipped with internal lighting. This lighting being protected by said casing, any risk of degradation of 2) such lighting is prevented.

  The use of plastics such as those

  mentioned above makes it possible to obtain a mechanical strength and a tightness of the casing identical or comparable to that of a casing made of a traditional material.

  Furthermore and depending on the design of the casing, in particular in the case where this casing comprises at least un3) drilling for the passage of at least one fixing member 3 or of a shaft or any mechanical part 4 or

  similar, each hole has at its edge a generally metallic reinforcement piece 5.

  The fixing of the casing to the vehicle is carried out in the traditional way by means of conventional fixing members which may be identical to those already used to date for the fixing of casings of aluminum or sheet steel. A seal 2 can be provided as the

shows the single figure.

Claims (5)

  1. Housing, in particular of engine or transmission, in particular for vehicles or machines of agrarian works, characterized in that the housing is in a transparent plastic material. 2. Housing according to claim 1, characterized in that the transparent plastic material constituting the housing is chosen from the family of acrylic compounds such as polymethyl methacrylate   and / or styrenic compounds such as polystyrene and / or vinyl compounds such as polyvinyl chloride and / or polyolefins such as polyethylene terephthalate and / or polyamides and / or polycarbonates.   3. Housing according to one of claims 1 and 2, characterized in that the transparent plastic material   constituting said housing is molded or formed or 20 thermoformed or injected.   4. Housing according to one of claims 1 to 3, characterized in that it is shaped to cover a   lighting device integrated into said vehicle. 5. Housing of the type comprising at least one bore for the passage of a fixing member or a shaft or the like   according to one of claims 1 to 4, characterized in that each hole in the casing has at its edge a generally metallic reinforcement piece.