JPH0435265Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a chassis frame structure that can be applied to mainly small vehicles with good results.

(Prior Art) Chassis frames used in small vehicles, such as commuter cars equipped with a gasoline engine or diesel engine, or small electric vehicles equipped with a battery and a motor, are different from those of regular or large vehicles. Due to the design and comfort of the vehicle, there are restrictions on the placement of engines, transmissions, etc. Therefore, the chassis frame structure conventionally used in regular automobiles and the like is inappropriate.

(Problem to be solved by the invention) In other words, if the chassis frame, which has been commonly used in the past and is formed by joining side rails and cross members by welding, etc., is applied to this type of vehicle as is, the engine and The serviceability of parts such as transmissions will be poor, and the strength will be comparable to that of a large vehicle, making it impossible to reduce weight. The present invention was made with the aim of improving this point.

(Means for Solving the Problems) The present invention provides a chassis frame in which two side rails are connected by a plurality of cross members, as a means for solving the above problems. A long hole extending in the width direction of the vehicle body is provided near both ends of the cross member that connects the front ends of the side rails, and the cross member can be attached to and removed from the front ends of the two side rails using a bolt passed through the long hole. It is configured to be fixed so that it can move freely and in the width direction of the vehicle body.

(Function) With the above configuration, when installing or removing large parts such as the engine or transmission,
This work can be done by loosening the bolts of the cross member that connects the front ends of the side rails corresponding to the front of the vehicle body where the engine and transmission are mounted, and removing or shifting the cross member in the width direction of the vehicle. This makes it significantly easier.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a chassis frame according to the present invention, which is of a so-called ladder type. This chassis frame is made up of two side rails 2 and 3 connected by four cross members 4, 5, 6, and 7. Of the four cross members, numbers 5, 6,
The one indicated by 7 is fixed to the side rails 2 and 3 by welding, but the side rails 2 and 3 indicated by 4
As shown in FIG. 2, the cross member that connects the front ends of the front ends of the cross member has elongated holes 8 extending in the width direction of the vehicle body near both ends thereof, and bolts 9 are passed through the elongated holes 8 to connect the side rails 2 and 3. Due to the fixed structure, it can be attached to and detached from the side rails 2 and 3 and can be moved in the width direction of the vehicle body (not shown). In the figure, reference numeral 10 indicates a support bracket for the front suspension, 11 a support bracket for the rear suspension, and 12 a support bracket (mounting) for the engine or motor.

This chassis frame configured in this way is
When removing or installing an engine, transmission, etc. mounted for the purpose of repair or the like, the bolts 9 are removed and the cross member 4 is removed. In addition, when a sudden lateral input is applied from the wheel (not shown) side (when a large stress is applied), the side rail 2 is arranged so that the bolt 9 can slide in the long hole 8 of the cross member 4. , 3 are given a degree of freedom in movement, and the side rails 2, 3 are elastically deformed by the force from the bracket 10 to absorb this force. Bolt 9 is restored when the input is no longer present. In this way, the cross member 4 can have lower rigidity in the lateral direction than in the case of welded joints,
This means that the overall weight can be reduced.

(Effects of the invention) Since the present invention is constructed as explained above, it is possible to reduce the weight of the chassis frame, and to mount large parts such as the engine and transmission mounted on the front of the vehicle body. The serviceability of attachment and detachment is improved, and the elasticity of the side rails can be used to ensure alignment after a lateral impact load.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a front view of FIG. 1 viewed from the direction of the arrow. 1... Chassis frame, 2, 3... Side rail, 4, 5, 6, 7... Cross member, 8...
Long hole, 9...bolt.

Claims (1)

[Scope of utility model registration request] In a chassis frame that connects two side rails with a plurality of cross members, a length extending in the width direction of the vehicle body near both ends of the cross member that connects the front ends of the side rails among the plurality of cross members. A chassis frame structure characterized in that a hole is provided and the cross member is fixed to the front ends of two side rails by bolts passed through the long hole so as to be detachable and movable in the width direction of the vehicle body. .