JP4196787B2 - Suspension device mounting structure - Google Patents

Description

  The present invention relates to a vehicle body mounting structure for a suspension device for mounting a vehicle suspension device to a vehicle body.

A suspension device (suspension assembly) for supporting a vehicle wheel is usually provided with a shock absorber, and the suspension device is generally attached to the vehicle body through the shock absorber portion. When mounting such a suspension device, the main part of the shock absorber must be properly positioned with respect to the vehicle body.
As a technology related to this, for example, Patent Document 1 discloses an assembly structure of components that can easily align bolts when attaching the upper end of a suspension strut to the vehicle body side.

In this assembly structure, a bolt projecting on the abutting surface of the bracket on the suspension strut side is inserted into a bolt through hole formed on the abutting receiving surface on the vehicle body side, and the suspension strut is attached to the vehicle body through this bolt. A male and female guide is provided on one and the other of the vehicle body side and the suspension strut side to guide the mutual fitting by a tapered taper surface and to restrict the range of movement of the suspension strut relative to the vehicle body in the bolt insertion cross direction. When the protruding amount from the receiving surface or the abutting surface is larger than the protruding amount of the bolt against the abutting surface, and the distance between the abutting receiving surface and the abutting surface matches the protruding amount of the bolt, the range of movement regulated by the male and female guides It is comprised so that a bolt through-hole may be located inside.
JP-A-8-207537

  However, in the assembly structure of the above-mentioned Patent Document 1, since it is necessary to prepare male and female guides separately, an increase in the number of components, an increase in component costs and an increase in man-hours for mounting are not preferable.

  The present invention was devised in view of the above-described problems, and can be easily positioned when the suspension device is attached to the vehicle body while suppressing an increase in the component cost and preventing an increase in the number of components. An object of the present invention is to provide a vehicle body mounting structure for a suspension device.

  For this reason, the vehicle body mounting structure of the suspension device according to the first aspect of the present invention is a vehicle body mounting structure for a suspension device that includes a shock absorber, and the upper portion of the shock absorber is mounted on the vehicle body, and the upper end portion of the shock absorber. A shock absorber mounting portion that is inserted into and attached to a shock absorber insertion hole formed in the vehicle body, and is attached to an upper end portion of the shock absorber, and is joined to a suspension mounting portion around the shock absorber insertion hole of the vehicle body A vehicle body mounting bracket, the vehicle body mounting bracket includes a mounting bolt that is inserted into a bolt insertion hole provided in the suspension mounting portion, and a bush that elastically couples the vehicle body mounting bracket to the shock absorber. And a cup holding the bush When the upper end of the shock absorber is inserted into the shock absorber insertion hole on the outer periphery of the cup, the shaft center of the shock absorber is aligned with the inner periphery of the shock absorber insertion hole. A taper-shaped guide that is aligned with the axial center of the insertion hole is extended (Claim 1).

  The tapered guide has a tapered outer peripheral surface formed such that the outer diameter of the lower end portion is set slightly smaller than the inner diameter of the shock absorber insertion hole, and the diameter decreases toward the upper end portion, As the tapered guide enters the shock absorber insertion hole, the tapered outer peripheral surface is configured to align with the inner periphery of the shock absorber insertion hole, and the tapered shape is formed. When the lower end portion of the outer peripheral surface enters the shock absorber insertion hole and the alignment is completed, the shock absorber insertion hole and the bolt insertion hole are set so that the mounting bolt starts to enter the bolt insertion hole. It is preferable that the positional relationship between the hole, the tapered outer peripheral surface, and the mounting bolt is set (Claim 2).

The tapered guide is preferably provided intermittently in the circumferential direction on the outer periphery of the cup.
Furthermore, it is preferable that a tapered inner peripheral surface and / or a cylindrical inner peripheral surface is formed at the edge of the shock absorber insertion hole.

  According to the vehicle body mounting structure of the suspension device of the present invention, a taper guide is extended on the outer periphery of the cup provided to hold the bush for elastically coupling the vehicle body mounting bracket to the shock absorber. According to the configuration, when the upper end of the shock absorber is inserted into the shock absorber insertion hole on the vehicle body side, the taper guide cooperates with the inner periphery of the shock absorber insertion hole to align the shaft center of the shock absorber with the shock absorber insertion hole. Align with the axis. Therefore, it is possible to easily perform positioning when the suspension device is attached to the vehicle body without increasing the parts cost and without causing an increase in the number of parts and an increase in the number of mounting steps.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a vehicle body mounting structure of a suspension device as an embodiment of the present invention. FIG. 1 is a schematic cross section of the present invention. FIG. 2 is a view showing the main part of the bracket, and FIG. 3 is a front view of the main part of the suspension device.
First, the suspension device according to the present embodiment will be described. As shown in FIG. 3, the suspension device 1 is attached to the vehicle body 3 via a shock absorber 21.

The shock absorber 21 is typically a strut of a strut suspension. However, the present suspension device is not limited to such a strut suspension, and the suspension device can be attached to the vehicle body via the shock absorber. It can be widely applied to.
In the suspension device 1 of this embodiment, a knuckle 13 that pivotally supports a wheel via a suspension arm 12 is supported on a suspension frame 11, and a shock absorber 21 is erected on the knuckle 13. An upper bracket (vehicle mounting bracket) 23 that is a main component of the vehicle body mounting structure for mounting the shock absorber 21 to the vehicle body 3 is fixed to the upper portion of the shock absorber 21, and is attached to the vehicle body 3 through the upper bracket 23. It has become.

  The upper bracket 23 is a substantially annular upper bracket body (vehicle body mounting bracket body) 26 provided slightly below the upper end of the shock absorber 21, and the upper bracket body 26 is elastically coupled to the upper end portion of the shock absorber 21. A bush (upper bush) 27, a cup 28 that holds the bush 27 from below, and a washer 29 that contacts the upper bush 27 from above. The bush 27 is sandwiched between the cup 28 and the washer 29.

  As shown in FIGS. 1 and 2, the upper bracket body 26 is welded at its center portion 26a to the center portion 28a of the cup 28 located below the bush 27, and outwardly from the center portion 26a. An intermediate portion 26b that is curved so as to gradually increase in diameter toward the vehicle is provided, and vehicle body joint portions 24a, 24b, and 24c that are joined to the vehicle body 3 are provided in the vicinity of the outer peripheral portion. A plurality (three in this case) of mounting bolts 25 projecting upward are projected from the vehicle body joint portion 24a.

  On the vehicle body 3 side, a hole portion (shock absorber insertion hole) 31 into which the upper end portion (shock absorber mounting portion) 22 of the shock absorber 21 is inserted and fitted, and a vehicle body joint portion 24 formed around the hole portion 31 are formed. And a bolt insertion hole 33 through which the mounting bolt 25 of the upper bracket 23 is inserted.

  Here, paying attention to the cup 28, it is sufficient for the cup 28 to extend outward to the extent of being partitioned by a broken line in FIG. 1 for the original function of holding the bush 27 from below, Here, as shown in FIGS. 1 and 2, the cup 28 extends further outward. The outwardly extending portion 30 of the cup 28 is formed in a taper shape that hangs downward as it goes outward. When the shock absorber 21 is assembled to the vehicle body, a hole (shock absorber insertion hole) is formed. ) It is configured as a tapered guide that guides the axial alignment with the hole 31 of the shock absorber 21 in cooperation with the inner periphery of 31.

In the case of the present embodiment, a plurality (three in this case) of the tapered guide 30 are provided intermittently in the circumferential direction on the outer periphery of the cup 28, and the extension area as the tapered guide 30 is suppressed as much as possible. However, in addition to providing a plurality of divisions in this way, only one may be provided continuously in the circumferential direction along the entire circumference. Of course, when dividing, the number of divisions is not limited.
The tapered outer peripheral surface 30a of the tapered guide 30 is formed such that the outer diameter of the lower end portion is set slightly smaller than the inner diameter of the shock absorber insertion hole 31, and the diameter decreases toward the upper end portion. As the tapered guide 30 enters the shock absorber insertion hole 31, the tapered outer peripheral surface 30 a cooperates with the inner periphery of the shock absorber insertion hole 31 to shock the shaft center of the shock absorber 21. The position is aligned with the axial center of the absorber insertion hole 31 (that is, the above-mentioned axial alignment is performed).

In particular, when the lower end portion of the tapered outer peripheral surface 30a enters the shock absorber insertion hole 31 and the above alignment is completed, the shock absorber insertion hole 31 so that the mounting bolt 25 starts to enter the bolt insertion hole 33. The positional relationship among the bolt insertion hole 33, the tapered outer peripheral surface 30a, and the mounting bolt 25 is set.
In addition, a tapered inner peripheral surface 31a having a diameter that gradually increases downward is formed at the edge of the shock absorber insertion hole 31 in the lower direction, which is the approach direction of the tapered guide 30, and further, A cylindrical inner peripheral surface 31b is formed continuously. The tapered inner peripheral surface 31a and the cylindrical inner peripheral surface 31b are set so that the intermediate portion 26b of the upper bracket body 26 constituting the shock absorber mounting portion 22 is properly fitted. The taper-shaped guide 30 also has a function of guiding entry from below.

  Since the vehicle body mounting structure for a suspension device according to an embodiment of the present invention is configured as described above, when the suspension device 1 is mounted on the vehicle body 2, the suspension device 1 is positioned below the vehicle body 2 at an appropriate position. The vehicle body 2 and the suspension device 1 are moved closer to each other (or the vehicle body 2 is placed on the chassis including the suspension device 1). As a result, the mounting portion 22 at the upper end of the shock absorber 21 having a large clearance is inserted into the hole portion (shock absorber insertion hole) 31, and thereafter, the tapered guide 30 provided on the cup 28 is tapered. The axial center of the shock absorber 21 is aligned with the axial center of the shock absorber insertion hole 31 as it enters while the outer peripheral surface 30 a is appropriately brought into contact with the inner periphery of the shock absorber insertion hole 31.

  In particular, when the lower end portion of the tapered outer peripheral surface 30a enters the shock absorber insertion hole 31 and the positioning is completed, the mounting bolt 25 starts entering the bolt insertion hole 33. For this reason, each mounting bolt 25 Is positioned with respect to the bolt insertion hole 33 immediately before entering the corresponding bolt insertion hole 33, and enters the bolt insertion hole 33 without any trouble, and then, by attaching a nut to each mounting bolt 25, the mounting is performed. Can be completed.

Therefore, it is possible to easily perform positioning when the suspension device is attached to the vehicle body without increasing the number of parts and without increasing the number of parts and the number of mounting steps.
Further, the tapered inner peripheral surface 31a and the cylindrical inner peripheral surface 31b on the inner periphery of the shock absorber insertion hole 31 guide the approach from below the tapered guide 30, so that the shock absorber insertion hole 31 of the tapered guide 30 enters the shock absorber insertion hole 31. The taper-shaped outer peripheral surface 30a is smoothly brought into contact with the inner periphery of the shock absorber insertion hole 31 when the taper-shaped guide 30 enters the shock absorber insertion hole 31, and alignment is performed. There is also an effect to make it easy.

  Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and various modifications can be made without departing from the spirit of the present invention.

It is typical sectional drawing which shows the vehicle body attachment structure of the suspension apparatus as one Embodiment of this invention. It is a figure which shows the principal part of the bracket concerning the vehicle body attachment structure of the suspension apparatus as one Embodiment of this invention, Comprising: (a) is the typical sectional drawing, (b) is the typical top view. . It is a principal part front view of the suspension apparatus concerning one Embodiment of this invention.

Explanation of symbols

1 Suspension device (suspension assembly)
21 Shock absorber 22 Upper end of shock absorber 21 (shock absorber mounting part)
23 Upper bracket (Body mounting bracket)
24a, 24b, 24c Vehicle body joint 25 Mounting bolt 26 Upper bracket body (vehicle body mounting bracket body)
27 Bush (Upper Bush)
28 Cup 29 Washer 30 Tapered guide 30a Tapered outer peripheral surface 31 Hole (shock absorber insertion hole)
31a Tapered inner peripheral surface 31b Cylindrical inner peripheral surface 32 Suspension mounting part 33 Bolt insertion hole

Claims (4)

A suspension mounting body mounting structure comprising a shock absorber and mounting an upper portion of the shock absorber to the vehicle body,
A shock absorber mounting portion provided at an upper end portion of the shock absorber and inserted through and attached to a shock absorber insertion hole formed in the vehicle body, and attached to an upper end portion of the shock absorber, around the shock absorber insertion hole of the vehicle body Body mounting bracket that joins to the suspension mounting part of
The vehicle body mounting bracket includes a mounting bolt that is inserted into a bolt insertion hole provided in the suspension mounting portion, a bush that elastically couples the vehicle body mounting bracket to the shock absorber, and a cup that holds the bush. Is provided,
When the upper end of the shock absorber is inserted into the shock absorber insertion hole on the outer periphery of the cup, the shaft center of the shock absorber is inserted into the shaft of the shock absorber insertion hole in cooperation with the inner periphery of the shock absorber insertion hole. A vehicle body mounting structure for a suspension device, characterized in that a tapered guide for alignment with the center is extended. The tapered guide has a tapered outer peripheral surface formed such that the outer diameter of the lower end portion is set slightly smaller than the inner diameter of the shock absorber insertion hole, and the diameter decreases toward the upper end portion, As the tapered guide enters the shock absorber insertion hole, the tapered outer peripheral surface is configured to align with the inner periphery of the shock absorber insertion hole,
The shock absorber insertion hole so that the lower end portion of the tapered outer peripheral surface enters the shock absorber insertion hole and the positioning is completed, so that the mounting bolt starts to enter the bolt insertion hole; 2. The vehicle body mounting structure for a suspension device according to claim 1, wherein a positional relationship among the bolt insertion hole, the tapered outer peripheral surface, and the mounting bolt is set.   3. The vehicle body mounting structure for a suspension device according to claim 2, wherein the tapered guide is provided intermittently in the circumferential direction on the outer periphery of the cup. 4. The vehicle body mounting structure for a suspension device according to claim 2, wherein a tapered inner peripheral surface and / or a cylindrical inner peripheral surface is formed at an edge of the shock absorber insertion hole.

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