JP2553928Y2 - Vehicle engine mounting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for supporting an upper portion of an engine mounted on a vehicle to a body frame of the vehicle.

[0002]

2. Description of the Related Art Conventionally, this type of mounting apparatus has been disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 63-9592.
No. 8, No. 60-64126, etc., a mounting bracket arm member protrudes from the cylinder block side of the engine in the direction of the cylinder head of the engine. Is attached to the vehicle body frame via an anti-vibration rubber such as an insulator.

[0003] However, depending on the structure of the vehicle and the engine mounted on the vehicle, the bracket arm member protruding from the cylinder block side of the engine may need to be lengthened. Thus, the bracket arm member protrudes long from the engine side. In such a case, the rigidity of the bracket arm member is reduced, so that the vibration at the tip end of the bracket arm member increases, causing resonance in a relatively low frequency range, and the resonance increases noise. .

In order to solve this problem, Japanese Utility Model Laid-Open Publication No. 60-64126 discloses a structure in which a front end of a bracket arm member protruding from a cylinder block side toward a cylinder head side and a cylinder head. , And are connected via another bar-shaped member. However, a configuration in which the distal end portion of the bracket arm member protruding from the cylinder block side and the cylinder head are connected by a rod-shaped member is because the proximal end portion is attached to the cylinder block side at the distal end portion of the bracket arm member. Since there is a large variation in the dimension between the cylinder head and the cylinder head, the length of the bar-shaped member has to be adjusted one by one, and the connection by the rod-shaped member requires a great deal of trouble and cost. There is a problem that it is considerably up.

[0005] In addition, if the distal end of the bracket arm member protruding from the cylinder block side and the cylinder head are connected by a rod-shaped member, the engine can
When a large impact force acts on the cylinder block side by colliding against a road surface or the like while the vehicle is traveling, the large impact force is transmitted to the cylinder head side via the rod-shaped member, and the upper surface of the cylinder block and This adversely affects the sealing head gasket interposed between the lower surface of the cylinder head and the sealing head, thereby lowering the sealing performance.

[0006] In particular, the reduction in the sealing performance of the head gasket is further increased due to the above-mentioned dimensional variations when the tip of the bracket arm member and the cylinder head are connected by a rod-shaped member. The present invention provides a bracket arm member for an engine mount,
When projecting in the direction of the cylinder head from the cylinder block side, it is possible to reliably reduce the vibration at the tip end of the bracket arm member without increasing the cost and lowering the sealing performance of the head gasket. Is a technical issue.

[0007]

In order to achieve this technical object, the present invention provides an engine mounting bracket arm member projecting from a cylinder block side of an engine in a direction of a cylinder head, and a tip end of the bracket arm member. In a mounting device in which a portion is attached to a vehicle body frame side through an anti-vibration rubber such as an insulator, a plate-like stay made of a thin leaf spring is arranged between a tip portion of the bracket arm member and the cylinder head. Provided, a bent piece at a substantially right angle is provided at both ends of the stay, and both bent pieces are provided at the tip end of the bracket arm member,
Each of the cylinder heads is fastened with a bolt. "
It was configured to say.

[0008]

[Work] By connecting the tip of the mounting bracket arm member and the cylinder head with the plate-shaped stay made of a thin leaf spring, the resonance point at the tip of the bracket arm member is obtained. Can be shifted to a higher frequency range because of the flat stay made of the thin leaf spring.

[0009] Furthermore, substantially perpendicular bent pieces are provided at both ends of the plate spring-like plate stay, and both bent pieces are
By tightening each of the tip of the bracket arm member and the cylinder head with a bolt, the variation in dimension between the tip of the bracket arm member and the cylinder head is reduced by the thin leaf spring plate. While it can be adjusted by the elastic deformation of the stay, when a large impact force acts on the cylinder block due to the engine colliding with the road surface while the vehicle is running, the large impact force is applied to the cylinder head side. Can be buffered by elastic deformation of the flat stay made of the thin leaf spring.

[0010]

Therefore, according to the present invention, the noise generated by the vibration of the tip of the mounting bracket arm can be greatly reduced, and the tip of the bracket arm is connected to the cylinder head. This has the effect of greatly reducing the cost required for the head gasket and of reliably preventing the sealing performance of the head gasket from being reduced.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the drawing, reference numeral 1 denotes a vehicle engine in which a cylinder head 4 is fastened to a top surface of a cylinder block 2 with a head gasket 3 for sealing therebetween, and a head cover 5 is attached to the top surface of the cylinder head 4. One longitudinal side surface 4a of one cylinder head 4
Has an exhaust manifold 6 (or an intake manifold)
Is installed.

Reference numeral 7 denotes a mounting bracket arm member, and the lower end of the bracket arm member 7 is fastened to one longitudinal side surface of the cylinder block 2 with a plurality of bolts 8. The upper end portion is configured to extend upward through the outside of the exhaust manifold 6. The distal end of the bracket arm 7 is connected to the vehicle body frame 10 via an anti-vibration rubber such as an insulator 9.

Reference numeral 11 denotes a plate-shaped stay made of a thin leaf spring having a plate thickness t of 1.6 mm and a width W of 9 mm.
The plate-like stay 11 is formed with bent pieces 11a and 11b at substantially right angles at both ends thereof, and inserted between one longitudinal side surface of the cylinder head 4 and the tip of the bracket arm 7, and then both ends thereof. Folded piece 11 in
a and 11b are fastened to the cylinder head 4 and the bracket arm 7 by bolts 12 and 13, respectively.

As described above, by connecting the distal end portion of the mounting bracket arm member 7 and the cylinder head 4 to the plate-like stay 11 made of a thin leaf spring, the distal end portion of the bracket arm member 7 is provided. The resonance point can be shifted to a higher frequency range because of the flat stay 11 made of the thin leaf spring. Further, as described above, bent pieces 11a and 11b that are substantially perpendicular to both ends of the plate-like stay 11 are provided.
Is formed, and the bent pieces 11a and 11b are fastened to the cylinder head 4 and the bracket arm 7 by bolts 12 and 13, respectively. Can be adjusted by the elastic deformation of the plate-like stay 11, while a large impact force acts on the cylinder block 2 side due to the engine 1 colliding against a road surface while the vehicle is running. In this case, the transmission of the large impact force to the cylinder head 4 can be damped by the elastic deformation of the plate stay 11 made of the thin leaf spring.

When the plate-like stay 11 is mounted between the cylinder head 4 and the bracket arm 7, the plate-like stay 11 before the mounting is mounted on the mounting member as shown by a two-dot chain line in FIG. The bracket arm is bent in advance at an angle larger than the shape at the time and is mounted between the cylinder head 4 and the bracket arm 7 while being deformed against its elasticity. For example, a spring force may be applied to the tip of the cylinder 7 in a direction toward the cylinder head 4 or in a direction away from the cylinder head 4.
As shown in FIG. 4, the plate-like stay 11 may be configured to have a curved portion 11c provided in the middle of the longitudinal direction.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is a front view of a disassembled state.

FIG. 4 is a diagram showing another example of the plate stay.

[Explanation of symbols]

 Reference Signs List 1 engine 2 cylinder block 3 head gasket 4 cylinder head 6 exhaust manifold 7 bracket arm 9 insulator 10 body frame 11 plate stay 11a, 11b bent piece 12, 13 bolt

Claims (1)

(57) [Scope of request for utility model registration] 1. An engine mounting bracket arm member protrudes from a cylinder block side of an engine toward a cylinder head, and a front end portion of the bracket arm member is attached to a vehicle body frame via an anti-vibration rubber such as an insulator. In the mounting apparatus, a thin plate spring-made stay is disposed between the tip end of the bracket arm member and the cylinder head.
At both ends of the stay are provided bent pieces at approximately right angles,
At the tip of the bracket arm member,
A vehicle engine mounting device, which is fastened to each of the cylinder heads by bolts .