JPH05557U - Engine ground structure - Google Patents

Abstract

(57) [Summary] [Purpose] The engine grounding strap, which was used to connect the automobile engine and the chassis frame that supports this engine to the earth function, was abolished, and the engine support part had the earth function. [Structure] Engine support leg 19 and engine support 27
A spring body 35 made of a conductor is passed through an engine cushion rubber 23 provided between the engine cushion rubber 23 and the engine cushion rubber 23. Both ends of the spring body 35 are brought into contact with the engine-side conductor 21 and the chassis frame-side conductor 25 to bring them into electrical conduction.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an engine ground structure provided between an automobile engine and a chassis that supports the engine.

[0002]

[Prior Art]

 As shown in the schematic view of FIG. 5, various wirings and pipes are provided between the engine 1 of the automobile and the chassis frame 3 that supports the engine. For example, a power steering hose 5 for extracting hydraulic pressure for power steering, an engine control cable 7 for controlling the engine 1, and a hand brake for operating a handbrake connected to an operating lever (not shown) near the transmission 9. The brake cable 11, the alternator earth 15 for earthing the electric leakage from the alternator 13, and the engine earth strap 17 for earthing the electric leakage of the engine 1 and the like. Such a large amount of wiring and piping requires extra space around the engine 1, and it is desired to reduce the space as much as possible.

[0003]

[Problems to be solved by the device]

 As described above, the ground from the engine 1 is sent to the chassis frame 3 via the engine ground strap 17, but the engine 1 is originally contacted with and supported by the chassis frame 3 at a plurality of points. As shown in FIG. 4, this conventional supporting portion is provided with an engine cushion rubber 23 in contact with an upper plate 21 attached to an engine supporting leg 19, and further, is attached to an engine support 27 via a lower plate 25. The engine support 27 is attached via a stiffener 29 to a frame side rail 31 which is a part of the chassis frame.

Between the stiffener 29 and the engine support leg 19, an engine ground strap 17 having a thickness of about 60 scare is usually provided to perform a ground function. Therefore, the coexistence of the support portion and the engine ground strap is not preferable from the viewpoint of effectively utilizing the limited space around the engine 1 or from the viewpoint of design flexibility. Therefore, an object of the present invention is to provide an engine ground structure that can also function as an engine earth strap in the engine supporting portion in order to solve the above problems.

[0005]

[Means for Solving the Problems]

 The present invention has been made to achieve the above object.A spring body made of a conductor is passed through an engine cushion rubber provided between an engine support leg and an engine support, and one end of the spring body is connected to the engine. The engine ground structure is characterized in that the other end of the side conductor is brought into contact with the chassis frame side conductor so as to be electrically connected.

[0006]

[Action]

 Even if the engine cushion rubber expands and contracts elastically while the vehicle is running, the spring body can sufficiently follow this elastic motion and both ends maintain contact with the engine-side conductor and chassis-frame-side conductor, so the grounding function is maintained. Can be fulfilled

[0007]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. Of these, FIG. 2 corresponds to the portion B of FIG. 4 showing the conventional example.

An upper plate 21 is attached to the engine support leg 19 with bolts 33. An engine cushion rubber 23 is fixed between the upper plate 21 and the lower plate 25 by a method such as welding. The rubber 23 is larger than the conventional one, and a hole 37 is formed in the center for the spring body 35 to pass through. Even if the hole 37 is formed, the rubber 23 is upsized, so that the force for supporting the engine 1 is not lost. The spring body 35 is made of a conductor, and in this embodiment, a metallic coil spring is used. Both ends of the compressed spring body 35 are in contact with the engine supporting leg 19 (conductor on the engine side) and the lower plate 25 (conductor on the chassis frame side) which are masked and maintain electrical conductivity. The lower plate 25 is fixed to the engine support 27 by a bolt nut 39. The engine support 27 is fixed to the stiffener 29 with bolts and nuts 41, and the stiffener 29 is fixed to the frame side rails 31, which are a part of the chassis frame, with bolts and nuts 43 (see FIG. 4 of the conventional example).

The size of the conventional engine ground strap 17 is about 60 scares. Since the spring bodies 35 are provided on the four engine supporting portions in this embodiment, the diameter of the spring body 35 may be about 3 mm. it is conceivable that.

According to this embodiment, when the engine cushion rubber 23 elastically expands and contracts due to the vibration caused by the traveling of the automobile, the spring body 35 follows the elastic motion and contacts the both ends. Therefore, the continuity between the metallic engine support leg 19 and the lower plate 27 is maintained, and the grounding function can be achieved. In this way, since the engine support portion can be provided with the grounding function, it is not necessary to separately provide the engine grounding strap 17 as in the conventional case, and the engine can be eliminated.

[0011]

[Effect of the device]

 As described above, according to the engine grounding structure of the present invention, the engine side conductor and the chassis frame are made to penetrate by the engine cushion rubber conventionally provided for supporting the engine through the spring body made of the conductor. Since the side conductors can be conducted to perform the earth function, the conventional engine earth strap can be eliminated, the space around the engine can be effectively used, and the degree of freedom in design is increased.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of an engine ground structure of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a bottom view of FIG.

FIG. 4 is a sectional view of a conventional engine support portion (FIG. 5A portion).

FIG. 5 is a schematic plan view of an engine having four engine support portions as shown in FIG.

[Explanation of symbols]

 19 Engine Support Leg 21 Upper Plate 23 Engine Cushion Rubber 25 Lower Plate 27 Engine Support 29 Stiffener 31 Frame Side Rail 35 Spring Body 37 Hole

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Claims (1)

[Claims for utility model registration] [Claim 1] A spring body made of a conductor is penetrated through an engine cushion rubber provided between an engine support leg and an engine support, and one end of the spring body is connected to an engine side conductor and the other end. An engine ground structure in which the conductor is brought into contact with the conductor on the chassis frame to electrically conduct the same.