JPH09207811A - Attachment structure of suspension coil spring receiver in vehicle frame structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To efficiently attach a coil spring receiver (2) to a cross member (5, 5) and to efficiently produce the coil spring receiver (2) itself with a small number of processing steps. To do. A coil spring receiver (2) is provided with two cross member through holes (11, 11), and cross members (5, 5) are respectively passed through the cross member through holes (11, 11) to be coupled. The coil spring receiver 2 is made of an extruded aluminum product in which the cross member through holes 11, 11 are integrally extruded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension coil spring receiver mounting structure in a vehicle frame structure, for example, a ladder frame structure in an automobile or the like.

[0002]

2. Description of the Related Art For example, an automobile may employ a frame structure called a ladder type structure in which a cross member is arranged in a ladder shape between left and right side frames. For example, this ladder type frame structure is provided with a coil spring receiver that receives a coil spring of a suspension. That is, as shown in FIG. 4 (a), two left and right side frames (51) (51) are arranged side by side in a side-by-side relationship with a predetermined distance in the front-rear direction and extended in the lateral direction. In the frame structure provided with the cross members (52) (52) of FIG. 4, as shown in FIG. 4 (B), the coil springs of the suspension are passed to these two cross members (52) (52). The receiver (53) is attached. Incidentally, (54) is a suspension, and in this suspension (54), (55) is a coil spring, (56) is a damper, and (57) and (59) are upper and lower spring seats. The upper spring seat (57) is fastened and fixed to the lower surface of the coil spring receiver (53) with bolts and nuts (60).

Conventionally, the coil spring receiver (53) as described above is attached to both end edges in a downward bending shape along the outer peripheral shape of the cross members (52) (52), as shown in FIG. The cross member (52) consists of a press-formed product of an iron plate with fitting parts (61) (61).
The fitting parts (61) (61) at both ends are fitted and arranged from above onto the outer periphery of each cross member (52) (52) so as to be passed to (52), and then welded in that fitted state (w) It was attached and fixed to the cross members (52) and (52) at. In addition, (62) is a damper insertion hole, (63) ... is a mounting hole, and is provided on the upper spring seat (5) of the suspension (54).
It is used to conclude 7).

[0004]

However, in the structure in which the coil spring receiver is attached to the frame cross member in the above-described configuration mode, it takes a lot of time to attach the coil spring receiver, and this attachment work can be efficiently performed. There was a problem that I could not keep going.
That is, the coil spring receiver (53) is connected to one end side of the coil spring (55) of the suspension (3), and therefore, the coil spring receiver (53).
Since a push-up force and a pull-down force by the coil spring (55), that is, a large external force in the vertical direction is frequently applied to the ,, in order to sufficiently withstand such a vertical force,
The welding (w) of the coil spring receiver (53) to the cross members (52) (52) needs to be performed with a sufficiently long welding length. Therefore, the coil spring receiver (53) and the cross member are welded. (52) It took a lot of work to join with (52).

Further, in the case of welding with such a long welding length, there is a problem that unintentional strain is generated in the welded portion (w) or its peripheral region.

Further, the coil spring receiver (53)
Since it is a press-molded product manufactured by press-molding a plate material, it is disadvantageous in that it requires a large number of processing steps to manufacture itself.

In view of the above-mentioned conventional problems, the present invention can efficiently perform the work of attaching and joining the coil spring receiver to the cross member to improve the productivity, and further, to reduce the strain. Provide a mounting structure for a suspension coil spring receiver in a vehicle frame structure that can suppress or prevent the occurrence, and can easily and efficiently manufacture the coil spring receiver itself with a small number of processing steps. The task is to do.

[0008]

SUMMARY OF THE INVENTION The above problem is that a plurality of cross members are laterally extended in a side-by-side arrangement in a side-by-side arrangement at predetermined intervals in the front-rear direction, and suspension coil spring receivers are provided with these cross members. In a mounting structure of a suspension coil spring receiver in a vehicle frame structure which is passed over to a member and is mounted, the coil spring receiver is made of a metal extruded mold material in which a plurality of cross member through holes are integrally extruded, Each of the members is passed through each cross member through hole of the coil spring receiver, and the coil spring receiver is connected to the cross member in a positioning state. Solution by mounting structure It is.

That is, the coil spring receiver is provided with a plurality of cross member through holes, and the cross member is passed through each cross member through hole of the coil spring receiver. The receiver can sufficiently withstand the action of external force in the vertical direction by the coil spring of the suspension. Therefore, after that, it suffices to connect the coil spring receiver in a positioning state so as not to be displaced in the length direction of the cross member, but the external force acting on the coil spring receiver in the length direction of the cross member is small, Therefore, the coil spring receiver may be lightly coupled to the cross member. Therefore, even if this connection is performed by welding, the welding length can be shortened, and even if other joining methods are used, the connection can be easily performed, and the work of attaching and joining the coil spring receiver to the cross member is efficient. Well done, productivity is improved.

Further, as described above, the coil spring receiver and each cross member can be connected to each other by shortening the welding length even if they are performed by welding, and the strength is sufficient even by joining other than welding. Since it can endure, welding can be eliminated or reduced, and generation of strain due to welding can be suppressed or prevented.

In addition, since the coil spring receiver is made of an extruded metal material in which a plurality of cross member through holes are integrally extruded, a predetermined forming gap shape is required in manufacturing the coil spring receiver. Extruding using an extrusion die having a, the extruded material obtained is a near net shape shaped coil spring receiver equipped with a cross member attachment part only through the process of cutting it into predetermined length units. Being manufactured, the coil spring receiver can be efficiently and easily manufactured with a small number of processing steps.

[0012]

Next, one embodiment of the present invention will be described.

In one embodiment shown in FIG. 1,
(1) is a ladder type frame used in automobiles, etc., (2) and (2) are suspension coil spring receivers, and (3) is a suspension.

As shown in FIG. 1 (a), the ladder type frame (1) is a pair of left and right aluminum or alloy side frames (a pair of which are made of aluminum and are extended in the front-rear direction in a parallel state at a predetermined interval. 4) (4) and a plurality of laterally-extended aluminum or alloy cross members (5) which connect these side frames (4) (4) at predetermined positions in the longitudinal direction. (5)
By and, the whole is constructed like a ladder. The cross members (5) and (5) in Fig. 1 (a) are 2 of them.
It shows the crossmembers of the book, these two
The cross members (5) (5) of the book are provided between the side frames (4) (4) in a side-by-side adjoining state with a predetermined interval in the front-rear direction.
Suspension coil spring receivers (2) (2) are attached.

The suspension coil spring receivers (2) and (2) are provided on the left and right sides corresponding to the left and right suspensions, respectively. As shown in FIGS. 1B and 1C, in this coil spring receiver (2), (6) is a receiving main body portion, and (7) and (7) are cross member attachment portions. The receiving body (6) has a rectangular shape, and a suspension damper insertion hole (9) is formed in the center thereof.
Are provided so as to pass through in the vertical direction, and a plurality of mounting holes (10) ... Are provided at intervals around the suspension damper insertion hole (9) in the vertical direction. Then, the receiving body portion (6) is opposed to each other 2
Each side portion of one pair of the pair of side portions is bulged, and penetrating cross member through holes (11) (11) oriented in the direction along the side portion are formed therein, and these through portions are formed. Hole (11) (1
The cross member attachment parts (7) and (7) are constituted by 1). The receiving main body portion (6) is formed into a hollow (12) for weight reduction.

The coil spring receiver (2) is made of a metal extrusion-molded product having the cross member through holes (11) and (11) integrally formed by extrusion. The coil spring receiver (2) is manufactured as follows. That is, first, as shown in FIG. 2 (a), the cross member through hole (11) in the coil spring receiver (2).
A die (13) having a cross-sectional shape corresponding to the shape when cut by a surface orthogonal to the axial direction of (11), and an extrusion die having a molding gap corresponding to the cross-sectional shape of the die (13) are provided. It is used for integral extrusion molding. Next, the mold material (13) is cut into units of a predetermined length to manufacture a mold material cut product (13a) as shown in FIG. And this cut product (13
On the other hand, as shown in FIG. 2 (c), when the suspension damper insertion hole (9) and the mounting hole (10) are formed by drilling as shown in FIG.
Is obtained.

The coil spring receiver (2) is attached to the ladder type frame (1) as follows. The two cross members (5) and (5) constituting the ladder frame (1) are placed in the respective cross member through holes (11) and (11) of the coil spring receiver (2) so that the coil spring receiver (2) ) Is located at a predetermined position in the longitudinal direction of the cross members (5) (5). Then, the coil spring receiver (2) and the cross members (5) and (5) are coupled. For this connection, various connection methods may be used, such as welding, or, if the cross members (5) and (5) are hollow, they are expanded. In short, it is possible to employ a simple coupling method that can prevent the coil spring receiver (2) from causing an unintentional sliding displacement in the longitudinal direction of the cross members (5) and (5). The coil spring receiver (2) is attached to the ladder frame (1) by connecting the side frame (4) and the cross members (5) and (5).
After setting the cross member (5) (5), the cross member through hole (11) of the coil spring receiver (2)
Since it cannot be passed through (11), it is usually performed during the assembly process of the ladder type frame (1).

In the suspension (3) shown in FIG. 1 (a), (14) is a coil spring and (15) is a coil spring.
Are dampers, and (16) and (17) are upper and lower spring seats. The upper spring seat (16) is provided on the lower surface side of the coil spring receiver (2) at the fastening member through hole (1) of the receiver (2).
It will be fastened with fastening members (19) such as bolts and nuts using 0).

In the suspension coil spring receiver mounting structure configured as described above, the coil spring receiver (2)
Is equipped with two cross member through holes (11) (11),
Since the cross members (5) and (5) are respectively passed through the cross member through holes (11) and (11),
With that alone, the coil spring receiver (2) becomes the coil spring (14) and damper (1) of the suspension (3).
Can withstand the action of external force in the vertical direction due to 5). Therefore, after that, the coil spring receiver (2) may be connected in a positioned state so as not to be displaced in the length direction of the cross members (5) and (5). Member (5)
The external force acting in the length direction of (5) is small, and therefore, the coil spring receiver (2) may be lightly coupled to the cross members (5) and (5). Therefore, even if this joining is performed by welding as described above, the welding length can be shortened, and the joining can be easily performed in an appropriate state by another joining method, for example, joining by expanding the cross member (5). The coil spring receiver (2) can be efficiently attached and joined to the cross members (5) and (5), and the coil spring receiver (2) can be manufactured with high productivity. Can be attached to.

Moreover, as described above, the coupling between the coil spring receiver (2) and each cross member (5) (5) is
Even when welding is used, the welding length can be shortened, and the strength can be sufficiently endured by joining other than welding, so welding can be eliminated or reduced, and distortion caused by welding can occur. Can be suppressed or prevented.

In particular, when the coil spring receiver (2), the cross member (5) and the like are made of aluminum or an alloy thereof as in this embodiment, the welding causes a decrease in strength in the vicinity of the welded portion. Although there is a risk, by adopting the mounting structure as described above, the number of welded parts can be reduced or the welded parts can be eliminated, and therefore, the strength reliability of the mounting part of the coil spring receiver (2) can be very high. Can be very expensive.

In addition, the coil spring receiver (2) is
Since a plurality of cross member through holes (11) and (11) are made of an extruded molding material integrally extruded, in manufacturing the coil spring receiver (2), as shown in FIG.
(B) As shown in (c), extrusion is performed using an extrusion die having a predetermined molding gap shape, the obtained extrusion mold material (13) is cut into predetermined length units, and the The coil spring receiver (2) of the near net shape shape having the cross member mounting portions (7) and (7) can be manufactured only by performing the steps of drilling (9) (10). Make the spring holder (2)
The number of processing man-hours is small, the production efficiency is high, and the cost is low.

Further, since the coil spring receiver (2) is made of an extruded material as described above, the degree of freedom in the cross-sectional design of the coil spring receiver (2) is increased, and therefore,
Various designs can be made such that the portion requiring high strength is thick, and the others are thin or hollow, and the coil spring receiver (2) excellent in function can be manufactured very easily.

The embodiment of the present invention has been described above.
The present invention is not limited to this, and various modifications are possible. For example, in the above embodiment, the ladder type frame structure is assumed, but the present invention is not limited to this and may be applied to various frame structures. Further, the mounting structure of the coil spring receiver according to the present invention may be applied to the rear or the front. Also,
The structure of the processing part such as drilling in the receiving body part (6) is
It goes without saying that it can be appropriately changed according to the configuration on the suspension side. Further, in the above-mentioned embodiment, the main body portion (6) of the receiver (2) has a hollow structure,
As shown in FIG. 3, this may be a solid structure without a hollow portion.

[0025]

As described above, in the mounting structure for the suspension coil spring receiver in the vehicle frame structure according to the present invention, the coil spring receiver is provided with the plurality of cross member through holes, and each cross of the coil spring receiver is provided. Since the cross members are respectively passed through the member through holes, the coil spring receiver can sufficiently withstand the action of the external force in the vertical direction by the coil spring of the suspension. Therefore, after that, it suffices to connect the coil spring receiver in a positioning state so as not to be displaced in the length direction of the cross member, but the external force acting on the coil spring receiver in the length direction of the cross member is small, Therefore, the coil spring receiver may be lightly coupled to the cross member. Therefore, even if this connection is performed by welding, the welding length can be shortened, and even if other joining methods are used, they can be easily joined, and the work of attaching and joining the coil spring receiver to the cross member can be performed efficiently. It can be performed well and productivity can be improved.

In addition, as described above, the coupling of the coil spring receiver and each cross member can shorten the welding length even when the welding is performed, and the strength is sufficiently high by the joining other than the welding. Since it can endure, welding can be eliminated or reduced, and generation of strain due to welding can be suppressed or prevented.

In addition, since the coil spring receiver is made of a metal extruded mold product in which a plurality of cross member through holes are integrally extruded, a predetermined forming gap shape is formed in the manufacture of the coil spring receiver. A near net shape coil spring receiver with a cross member attachment part is manufactured only by performing the process of extruding using the extrusion die it has and cutting the extruded material into predetermined length units. Therefore, the coil spring receiver can be efficiently and easily manufactured with a small number of processing steps.

[Brief description of drawings]

FIG. 1 shows a mounting structure of a coil spring receiver according to an embodiment, FIG. 1A is a sectional view taken along the line I-I of FIG. 2B, and FIG. 2B is an enlarged view of a coil spring receiving portion. A plan view and FIG. 3C are plan views of a frame structure including the receiving portion.

2A to 2C are perspective views showing a manufacturing process of the coil spring receiver.

FIG. 3 is a perspective view of a coil spring receiver according to another embodiment.

FIG. 4 shows a conventional example, FIG. 4A is a plan view showing a mounting state of a coil spring receiver, and FIG. 4B is a sectional view taken along the line II-II of FIG. 4A.

[Explanation of symbols]

 1 ... Ladder type frame 2 ... Coil spring receiver 3 ... Suspension 4 ... Side frame 5 ... Cross member 11 ... Cross member through hole 14 ... Coil spring

Claims (1)

[Claims] 1. A plurality of cross members are laterally extended in an adjoining side-by-side state at predetermined intervals in the front-rear direction between side frames, and suspension coil spring receivers are attached to these cross members by passing over them. In the attachment structure of the suspension coil spring receiver in the vehicle frame structure, the coil spring receiver is made of a metal extruded mold material in which a plurality of cross member through holes are integrally extruded,
A suspension coil spring in a vehicle frame structure, wherein each of the cross members is passed through each cross member through hole of the coil spring receiver, and the coil spring receiver is connected to the cross member in a positioned state. Receiver mounting structure.