JP2005248972A - Suspension device - Google Patents

Abstract

PROBLEM TO BE SOLVED To reduce the weight and reduce the cost, and to improve the assembling property of the bearing and the spring seat by making them into a cartridge.
In a suspension device in which a spring seat A is held on a mount C on a vehicle body side via a bearing 19 and the upper end of a suspension spring 11 is carried on the spring seat A, an annular groove 21c is formed on the outer periphery of the bearing 19. The annular protrusion 1a is formed on the inner periphery of the spring seat A, the inner periphery of the spring seat A is fitted on the outer periphery of the bearing 19, and the annular protrusion 1a is fitted in the annular groove 21c.
[Selection] Figure 2

Description

  The present invention relates to a suspension device interposed between a vehicle body and an axle, and more particularly to a suspension device in which a spring seat carrying a suspension spring is held on a vehicle body side mount via a bearing.

  In general, a suspension device for a vehicle such as an automobile is configured by providing a shock absorber and a suspension spring in parallel between a vehicle body and an axle. It is interposed between the lower spring seat.

  Such suspension system, for example, Patent Document 1, those Taib as shown in Patent Document 2 is common.

That is, as shown in Patent Document 1 and Patent Document 2, the upper metal spring seat is held on the vehicle body side mount via the bearing, and the upper end of the suspension spring is carried on the upper spring seat.
JP 2003-194134 A (drawing) JP 2003-214475 A (FIG. 1)

  Suspension device disclosed in Patent Documents 1 and 2 is not particularly mean is defective functional, the following improvements have been desired.

  Firstly, in the suspension devices as shown in Patent Documents 1 and 2, since the spring seat is made of metal, the weight is heavy and expensive, and weight reduction and cost reduction are desired.

  Secondly, since the bearing and the spring seat are assembled independently, the assembling work is troublesome and inferior in assemblability.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a suspension device that can achieve weight reduction and cost reduction, and can improve the assembling property of the bearing and the spring seat as a cartridge.

  In order to achieve the above object, according to the means of the present invention, in a suspension device in which a spring seat is held by a mount on the vehicle body side via a bearing, and the upper end of the suspension spring is supported on the spring seat, An annular groove is formed, an annular protrusion is formed on the inner periphery of the spring seat, the inner periphery of the spring seat is fitted on the outer periphery of the bearing, and the annular protrusion is fitted in the annular groove.

  According to the present invention, the following effects can be obtained.

  1) Since the spring seat itself is formed of a rubber material, the overall weight is lighter than that of a metal material, and the cost can be reduced.

  2) Similarly, the spring seat itself has anti-vibration function, so the number of parts is less than that of the metal sheet body laminated with anti-vibration rubber made of rubber material, weight reduction, workability and assembly. Can be improved.

  3) Since the spring seat is directly coupled to the bearing, both cartridges can be formed, and both can be coupled with one touch and mounted on the mount at a time, thereby improving the assemblability.

  An embodiment of the present invention will be described below with reference to the drawings. In the suspension device according to the present invention, a spring seat A held on a vehicle body side mount C via a bearing 19 and an upper end are supported on the spring seat A. Suspension spring 11.

  As shown in FIG. 3, the spring seat A is a spring seat that holds a suspension spring 11 that is held by the vehicle body side mount C and is interposed between the shock absorber 9, and includes a cylindrical portion 1 and a cylindrical portion 1. A spring guide provided integrally with the upper end of the flange portion 2 and a guide groove 3b provided integrally with the outer periphery of the flange portion 2 and the outer periphery of the cylindrical portion 1 and facing the outer surface of the cylindrical portion 1 It consists of the part 3, and is shape | molded with the rubber material.

  The spring guide portion 3 is integrally connected to the outer periphery of the flange portion 2, and the lower end support portion 3 a is integrally connected to the outer periphery of the cylindrical portion 1, whereby the suspension spring is opposed to the outer surface of the inner cylindrical portion 1. A guide groove 3 b that is inserted through 11 is formed.

  Further, an end holding member 7 of a spring S including a vertical stop piece 5 and a horizontal guide piece 6 is integrally provided on the outer periphery of the cylindrical portion 1. Further, an annular protrusion 1 a is formed in the middle of the inner periphery of the tube portion 1, and an annular support piece 1 b is formed at the lower end of the inner periphery of the tube portion 1.

  The suspension device B is interposed between a strut type shock absorber 9 attached to the wheel side bracket 8, an upper spring seat A held on the vehicle body side mount C, and a lower spring seat 10 attached to the outer periphery of the shock absorber 9. The suspension spring 11 is mounted.

  The mount C includes an inner base 13 coupled to the vehicle body via bolts 12, a cover 14 coupled to the lower portion of the inner base 13 via bolts 12, and a mount coupled between the inner base 13 and the cover 14. The inner rubber 16 is held in the rubber 15.

  The center of the inner rubber 16 of the mount C passes through the piston rod 17 of the shock absorber 9, and the tip of the piston rod 17 is fixed to the inner rubber 16 via a nut, whereby the piston rod 17 is coupled to the vehicle body side. .

  The cover 14 has a centered bottomed cylindrical portion 14a, a horizontal plate portion 14b continuously provided at the upper end of the cylindrical portion 14a, and a plurality of locking holes 14c spaced from the body portion of the cylindrical portion 14a in the circumferential direction. It consists of and.

  A bump rubber 18 is coupled to the lower surface of the cylindrical portion 14 a of the cover 14, and the piston rod 17 passes through the center of the bump rubber 18, and the upper end of the cylinder of the shock absorber 9 is near the bump rubber 18 near the most compressed state of the shock absorber 9. The cushion is effective by colliding with.

  A bearing 19 is fitted and held on the outer periphery of the cylindrical portion 14 a of the cover 14, and a rubber spring seat A according to the present invention is fitted and held on the lower outer periphery of the bearing 19. The upper end of the suspension spring 11 is carried.

  As shown in FIGS. 2 and 4, the bearing 19 is interposed between an annular inner body 20 made of rubber or synthetic resin, an outer body 21 that is also made of rubber and annular, and the inner body 20 and the outer body 21. It is comprised with the ball bearing 22 made to do.

  The inner body 20 includes an annular main body 20a, a skirt-like cover 20b provided continuously with the outer periphery of the main body 20a, and hooks 20c spaced at equal intervals on the inner periphery of the main body 20a.

  The outer body 21 includes an annular main body 21a, a curved surface 21b formed on the outer periphery of the main body 21a, an annular groove 21c formed on the outer periphery of the main body 21a, and a locking projection 21d formed at equal intervals on the inner periphery of the main body 21a. The locking protrusion 21d includes a stepped portion a and a tapered guide surface b.

  The ball bearing 22 includes a pair of upper and lower sandwiching pieces 22a and 22b and a ball 22c rotatably held between the sandwiching pieces 22a and 22b. The outer body 21 is connected to the inner body 20 via the balls 22c. In one direction.

  For this reason, when the suspension spring 11 expands and contracts and the upper end of the suspension spring 11 rotates, the spring seat A and the outer body 21 interlocked therewith can be rotated.

  When the bearing 19 is fitted to the outer periphery of the cover 14, as shown in FIG. 5, the inner body 20 enters in the direction of the arrow X, and at this time, the hook 20 c moves while being crushed in the direction of the arrow Y and the cover 14. When the locking hole 14c is reached, it is fitted into the locking hole 14c with a self-restoring force. As a result, the hook 20c is locked to the locking hole 14c and the inner body 20, in other words, the bearing 19 as a whole. Is held by the cover 14 to prevent the dropout.

  The upper end portion of the dust cover 23 is fitted and held on the inner periphery of the outer body 21 of the bearing 19. In this case, a bent portion 23 a formed on the dust cover 23 is a locking projection 21 d on the inner periphery of the outer body 21. The inclined portion 23b is in contact with the guide surface b of the locking projection 21d.

  The spring seat A according to the present invention is fitted to the outer periphery of the outer body 21 in the bearing 19. At this time, the flange surface 21 b of the outer body 21 is fitted to the inner peripheral surface of the spring seat A, in other words, a cylindrical portion. The inner peripheral surface of 1 and the upper surface of the flange portion 2 are in close contact.

  Furthermore, the inner circumferential annular protrusion 1 a of the spring seat 2 is fitted into the annular groove 21 c of the outer body 21, and the annular support piece 1 b at the lower inner circumference of the spring seat 2 is fitted to the lower end surface of the outer body 21. It is in contact.

  At this time, the spring seat 2 can be more reliably held on the bearing 19 side by the annular support piece 1b coming into contact with the lower end of the bellows portion of the dust cover 23.

  The suspension spring 11 has a coil shape, and the uppermost spiral portion of the suspension spring 11 enters while being guided by a guide groove 3b formed inside the spring guide portion 3 of the spring seat A, in other words, the cylindrical portion. 1 is wound around the outer periphery of the coil 1, and the end coil end is in contact with the stopper piece 5.

  At this time, the lower portion of the spiral portion is supported by the guide piece 6 and prevented from falling downward, and in particular, a rib 6a and a flange are formed at the upper end of the guide piece 6, so this rib 6a And the flange portion 2 are more firmly held by a suspension spring.

  Further, the rib 6a reinforces the guide piece 6, prevents the guide piece 6 from being pinched downward or deformed, and prevents the upper end portion of the suspension spring 11 from falling downward. .

  Since the spring guide portion 3 is integrally connected to the flange portion 2 and the cylindrical portion 1, the guide groove 3b does not open. Therefore, the spring guide portion 3 is guided while guiding the upper spiral portion of the suspension spring 11 in the circumferential direction. While the suspension spring 11 is guided in the lateral direction, the suspension spring 11 is prevented from being displaced or pulled out in the lateral direction.

  In other words, the spring seat A is made of rubber, and even if a biased load acts on the entire spring seat A to be slightly distorted or a lateral load acts on the spring guide 3 from the suspension spring 11, the spring guide 3 itself is Since the guide groove 3b is not always opened by being integrally coupled to the flange portion 2 and the cylindrical portion 1, the suspension spring 11 is prevented from being displaced laterally and falling off as a result.

It is a partially longitudinal front view of the suspension device according to the present invention. It is a partially expanded sectional view of FIG. It is a partially cutaway perspective view of a spring seat. It is an expanded sectional view of a bearing. It is a partially expanded sectional view which shows the fitting state of a bearing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tube part 1a Annular protrusion 1b Annular support piece 2 Flange part 3 Spring guide part 3a Support piece 3b Guide groove 5 Stop part 6 Guide piece 7 End part holding member 11 Suspension spring 19 Bearing 20 Inner body 21 Outer body 21a Main body 21b Curved surface 21c Annular groove A Spring seat

Claims (2)

In the suspension system in which the spring seat is held by the mount on the vehicle body via the bearing, and the upper end of the suspension spring is supported on this spring seat, an annular groove is formed on the outer periphery of the bearing, and the annular projection on the inner periphery of the spring seat The suspension is characterized in that the inner periphery of the spring seat is fitted to the outer periphery of the bearing and the annular protrusion is fitted into the annular groove. The bearing is composed of an annular inner body, an annular outer body, and a ball bearing interposed between the inner body and the outer body. A curved surface and an annular groove are formed on the outer periphery of the outer body, and the spring seat is made of rubber. A cylindrical portion, a flange portion integrally connected to the upper end of the cylindrical portion, and an annular protrusion formed on the inner periphery of the cylindrical portion; and an inner peripheral surface of the cylindrical portion of the spring seat on the curved surface of the outer body The suspension device according to claim 1, wherein an upper surface of the flange portion is in close contact, and an annular protrusion is fitted in the annular groove.

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