JPH0445985Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention includes a first elastic body disposed between a vehicle body and a chassis frame, and a second elastic body disposed below the first elastic body with the chassis frame in between. has a body,
The present invention relates to an automobile body mount in which these elastic bodies, a vehicle body, and a chassis frame are connected by mount bolts and nuts.

Prior Art In automobiles with a chassis frame, it has been well known that the vehicle body is supported on the chassis frame via the above-mentioned type of body mount in order to prevent vibrations from the chassis frame from being directly transmitted to the vehicle body. (For example, see Utility Model Application Publication No. 56-39374). A plurality of body mounts are provided, and these are appropriately distributed so that each body mount shares and supports the load of the vehicle body. In this case, it is most desirable that the shared loads acting on each body mount be as designed. This is because if a load that greatly exceeds the design value is applied to the body mount, vibration noise will be generated due to the overload on the body mount while the vehicle is running, and the body mount will deteriorate prematurely. However, due to manufacturing errors in the car body or chassis frame, the height spacing between the car body and the chassis frame to which individual body mounts are attached varies, and as a result, the shared load of each body mount deviates significantly from the design value. There is a risk of it being stored away.

For this reason, in the past, attempts were made to suppress the occurrence of the above-mentioned defects by increasing the structural precision of the vehicle body and chassis frame and eliminating the above-mentioned variations.
Such a measure would increase the cost of the car body and chassis frame, and is not the best solution.

Purpose The purpose of the present invention is to provide a body mount that eliminates the above-mentioned conventional drawbacks with a simple structure.

Configuration In order to achieve the above object, the present invention includes a first elastic body disposed between the vehicle body and the chassis frame;
A second elastic body is arranged below the first elastic body with the chassis frame in between, a fixing nut fixed to the vehicle body, a male thread to be screwed into the nut is formed on the outer surface, and a female thread is formed on the inner surface. is formed, and the first
an adjusting nut disposed on the elastic body; a lock nut screwed onto the male thread of the adjusting nut and cooperating with the fixing nut to fix the adjusting nut to the vehicle body; and the first and second lock nuts. A mount bolt is provided that passes through the elastic body and the chassis frame and is screwed onto a female thread of the adjustment nut, and the adjustment nut has an engaging portion that is engaged with a spanner that rotates the nut. We propose body mounts for automobiles that are

Operation According to the above configuration, by rotating the adjustment nut, the height position of the adjustment nut relative to the vehicle body can be adjusted, and the shared load of the body mount can be adjusted to an appropriate value.

Examples Examples of the present invention will be described below with reference to the drawings.
In addition, the structure of the conventional body mount and the drawbacks of the conventional body mount described above will be explained in more detail with reference to the drawings.

Fig. 1 is a perspective view showing an example of a car with a chassis frame, 1 is a chassis frame, and 2 is a car body. It is supported by the chassis frame 1 via six body mounts 3.

Before clarifying the details of these body mounts, an example of a conventional body mount will be explained with reference to FIG. 5.

In FIG. 5, 4 is a body bracket that constitutes a part of the vehicle body 2, and this bracket 4 is used to attach other parts of the vehicle body, such as the lower surface of a floor panel (not shown) that constitutes the floor surface of the vehicle interior, and the body bracket 4. It is fixed by welding to a rocker panel (also not shown) that extends in the front-rear direction. Reference numeral 5 denotes a chassis bracket fixed to the chassis frame main body 6 (see FIG. 1), and between this bracket 5 and the body bracket 4 is a first elastic body 7a made of rubber or other elastic material. It's pinched. Reference numeral 8a is a receiving tray of the chassis bracket that receives the first elastic body 7a. Further, a second elastic body 9a made of rubber or other elastic material is disposed below the first elastic body 7a with the chassis bracket 5 in between, and a washer 10a is disposed below this elastic body 9a. ing.

The first elastic body 7a is generally called bound rubber, and the second elastic body 9a is also called rebound rubber.

The aforementioned body bracket 4 which is a part of the vehicle body 2
A mount bolt 11 is attached to the first elastic body 7a, the chassis bracket 5 which is a part of the chassis frame 1, the second elastic body 9a and its washer 10a.
A passes through the nut 12 and is screwed onto it.
By tightening a, each of the above elements 4, 7a,
5, 9a, and 10a are coupled to each other. In this way, the vehicle body 2 is constructed with the first and second elastic bodies 7a and 9.
a, a body mount 3 composed of a bolt 11a, a nut 12a, and a washer 10a;
a, and even if the chassis frame 1 vibrates when the car is running, the vibrations of the chassis frame 1 can be directly transmitted to the vehicle body 2 due to the action of both elastic bodies 7a and 9a. blocked,
The comfort inside the vehicle is improved.

Conventional body mount 3 configured as described above
Similarly to the body mounts 3 shown in FIG. 1, the body mounts a are appropriately distributed so that the individual body mounts can share and support the load of the vehicle body. At that time, as explained earlier, due to manufacturing errors in the vehicle body 2 and chassis frame 1, the height interval H between the vehicle body 2 and chassis frame 1 at the body mount attachment part varies, so this affects the individual body mounts. The vehicle body load may not be as designed. In other words, if the spacing H between the parts where a certain body mount is attached is larger than the design value, and conversely the spacing H between the parts where other body mounts are attached is smaller than the design value, the latter body mount will have to bear the designed shared load. A larger load is applied. If such a situation occurs, the aforementioned disadvantages such as premature deterioration of the overloaded body mount cannot be avoided.

FIG. 2 is a sectional view showing a specific example of the automobile body mount 3 according to the present invention, and the details of its construction will be clarified while explaining the assembly operation.

As shown in FIG. 3a, a fixing nut 12 is fixed in advance to the upper surface of the body bracket 4, which is a part of the vehicle body 2, by, for example, welding. It is arranged at a position that matches the hole 20.

First, the adjusting nut 21 is screwed onto the fixing nut 12 from below. This adjustment nut 21 is the fourth
As clearly shown in the figure, a thread 22 is formed on the outer surface thereof, and an engaging portion 23 having a hexagonal cross section, for example, is provided on the lower side thereof, with which a spanner (not shown) for rotating the nut 21 is engaged. Further below, there is a flange section 2.
It has 4. The cylindrical portion with the external thread 22, the engaging portion 23, and the flange portion 24 are all integrally formed, and constitute the adjusting nut 21 as one component. Further, a female thread 25 is formed on the inner surface of the through hole formed in the center.

Screw the lock nut 26 (FIG. 3a) onto the male thread 22 of the adjustment nut 21 configured as described above,
In this state, while rotating the adjusting nut 21, screw the male thread 22 into the female thread of the fixing nut 12.
As shown in FIG. 3b, the lock nut 26 is brought into pressure contact with the lower surface of the body bracket 4, and the nut 26 is tightened. In this way, the male thread 22 of the adjusting nut 21 is screwed onto the fixing nut 12, and the lock nut 26, which is also screwed onto the male thread 22 of the adjusting nut 21, cooperates with the fixing nut 12 to tighten the adjusting nut. 21 is fixed to the vehicle body 2.

The screwing position of the lock nut 26 with respect to the adjustment nut 21 shown in FIG.
Figure a) has been adjusted in advance to obtain the spacing H (Figure 2), which will be described later.

Next, the vehicle body 2 to which the adjustment nut 21 is attached as described above is placed on the chassis frame 1. On the other hand, as shown in FIG. 3b, a ring-shaped first elastic body 7 is placed on the tray 8 of the chassis bracket 5, which is a part of the chassis frame 1, and the vehicle body 2 is mounted on the chassis frame 1.
Place it on top. In this way, the vehicle body 2 is supported on the chassis frame 1 via the first elastic body 7 (see FIG. 3c). At this time, the center hole of the ring-shaped first elastic body 7, the saucer 8 and the chassis bracket 5
The holes formed in the adjusting nut 21 coincide with each other, and these holes also coincide with the central hole of the adjusting nut 21.

Next, a ring-shaped second elastic body 9 is placed under the chassis bracket 5 as shown in FIG. 9. Pass through the chassis bracket 5 of the chassis frame 1 and the first elastic body 7, and insert the female thread 2 of the adjustment nut 21.
5 (Fig. 4), and tighten the bolt 11 against the adjustment nut 21.

In this way, as shown in FIG. 2, the first elastic body 7 is disposed between the body bracket 4 of the vehicle body 2 and the chassis bracket 5 of the chassis frame 1,
The second elastic body 9 is disposed below the first elastic body 7 with the chassis bracket 5 of the chassis frame 1 interposed therebetween, and the adjustment nut 21 is disposed above the first elastic body 7.
In this state, these elements 4, 7, 5, 9 are connected to each other by the mounting bolt 11, fixing nut 12, and adjusting nut 21.

The above-described operation is performed on all six body mounts 3 shown in FIG. 1, and after this operation is completed, the vehicle body 2 is supported by the chassis frame 1 via the six body mounts 3. In this case, the distance H between the body bracket 4 and the chassis bracket 5 at the attachment point of each body mount is determined by the aforementioned distance l (Fig. 3a), and therefore the distance l must be set correctly in advance. If this is done, as long as there is no manufacturing error between the vehicle body 2 and the chassis frame 1, an appropriate distance H will be obtained, and the shared load of the vehicle body acting on each body mount 3 will be the same as the designed value.

There is a manufacturing error in the vehicle body or chassis frame, the interval H is inappropriate, and the individual body mounts 3
If the load shared by the vehicle body differs from the design value, the lock nut 26 should be
Loosen the engaging part 23 of the adjusting nut 21 in this state.
Rotate this nut 21 using a spanner (not shown). As a result, the adjusting nut 21 can be rotated upwardly or downwardly with respect to the body bracket 4 while its male thread 22 engages with the female thread of the fixing nut 12 and its female thread 25 engages with the male thread of the bolt 11. Moving. At this time, bolt 11 and adjustment nut 2
1 and moves upward or downward together with the adjusting nut 21. By such an operation, the body bracket 4 moves up and down with respect to the chassis bracket 5, and the height interval H of the body bracket 4 with respect to the chassis bracket 5 is adjusted. If this operation is performed for all body mounts as necessary and the spacing H between all body mount attachment points is set to an appropriate value, the shared load of the vehicle body acting on each body mount 3 will match the design value. can be done. Finally, Locknut 26
The entire operation is completed by tightening again as shown in FIG. 2 and fixing the adjusting nut 21 to the body bracket 4.

Effects According to the present invention, it has become possible to easily adjust the distance between the chassis frame and the vehicle body at the location where each body mount is placed to an appropriate value.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the car, with the body shown in chain lines to clarify the relationship between the chassis frame, body, and body mounts; Figure 2 is a vertical cross-sectional view of the body mount, with the body also shown in solid lines; Figures 3a to 3d are explanatory diagrams clarifying the body mount assembly operation and interval adjustment work, Figure 4 is a perspective view of the adjustment nut, Figure 5 shows an example of a conventional body mount, Figure 2 and It is a similar cross-sectional view. DESCRIPTION OF SYMBOLS 1... Chassis frame, 2... Vehicle body, 3... Body mount, 7... First elastic body, 9... Second elastic body, 11... Mount bolt, 12... Fixing nut, 21... Adjustment Nut, 22...male screw, 2
3...Engaging portion, 25...Female thread, 26...Lock nut.

Claims (1)

[Scope of utility model registration request] The first part is located between the vehicle body and the chassis frame.
an elastic body, a second elastic body disposed below the first elastic body across the chassis frame, a fixing nut fixed to the vehicle body, and a male thread screwed onto the nut formed on the outer surface, A female thread is formed on the inner surface, and is screwed onto the adjusting nut disposed on the first elastic body and the male thread of the adjusting nut, and cooperates with the fixing nut to attach the adjusting nut to the vehicle body. and a mount bolt that passes through the first and second elastic bodies and the chassis frame and is screwed into the female thread of the adjustment nut, the adjustment nut being fixed to the adjustment nut. An automobile body mount that has an engaging part that is engaged by a wrench that rotates the body.