Split type automobile shock absorber piston rod clamp spring

Abstract

The utility model provides a split type automobile shock absorber piston rod clamp spring, the clamp spring includes left half ring and right half ring, left half ring and right half ring splicing combination is a complete ring, when installing, left half ring first clamps into the bottom of the clamping groove, right half ring is pressed in along the radial direction and clamps into the clamping groove and passes through the lock stop of baffle, and compared with the installation of traditional clamp spring, the utility model is more convenient, adopts radial installation to avoid the problem that the clamp spring can scratch the plating layer of piston rod in axial installation.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension system manufacturing technology, and in particular to a split-type automotive shock absorber piston rod retaining ring. Background Technology

[0002] The retaining circlip on the piston rod of an automotive shock absorber is a key fixed component in the suspension system. Its core function is to limit the axial displacement of related components on the piston rod (such as limit blocks and seals), ensuring the stable operation of the shock absorber under dynamic loads. Traditional retaining circlips are integral ring structures that need to be axially fitted from the end of the piston rod. During assembly, strict alignment of the axis is required, which limits the operating space. Furthermore, axial installation of the retaining circlip requires the circlip to be slowly moved along the piston rod axis into the retaining circlip groove. During this process, the retaining circlip is prone to friction with the piston rod, which can damage the electroplated layer of the piston rod. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a split-type piston rod retaining ring for automotive shock absorbers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A split-type automotive shock absorber piston rod retainer includes a retainer and a piston rod for mounting the retainer, and also includes a stop block for preventing the retainer from falling off. The retainer is a split semi-ring structure, including a left half-ring and a right half-ring, the shape and size of which are adapted to each other, and the left half-ring and the right half-ring are spliced ​​together to form a complete ring. The outer wall of the piston rod is provided with a retaining groove for embedding the retainer. The stop block is a split structure adapted to the retainer, and a retainer clamping groove is provided on the inner wall of the stop block. The shape and size of the retainer clamping groove are adapted to the shape and size of the left half-ring and the right half-ring.

[0005] Furthermore, the slot shown is an arc-shaped slot, and the shape and size of the slot are adapted to the shape and size of the left and right half-rings.

[0006] Furthermore, the central angle between the left and right semi-rings is 180°.

[0007] Furthermore, the number of slots is several, and they are evenly spaced on the outer surface of the piston rod.

[0008] Furthermore, a lug is provided at the port position of the outer wall of the stop block, and the lug is fixedly connected to the outer wall of the stop block to form an integrated structure. The lug is provided with a bolt hole for the bolt to pass through.

[0009] Furthermore, the left and right half-rings are made of 60Si2Mn spring steel, which is wire-cut and then heat-treated to HRC35-40.

[0010] Furthermore, the left and right halves of the ring are made of stainless steel or titanium alloy.

[0011] Furthermore, the surfaces of the left and right halves of the ring are subjected to phosphating treatment.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the traditional integral ring snap ring structure is divided into two mutually cooperating semi-ring bodies, the left half ring and the right half ring, which makes the installation more convenient than the traditional snap ring. At the same time, the radial installation avoids the problem of scratching the electroplated layer of the piston rod caused by the axial installation of the snap ring. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall retaining spring of the split-type automotive shock absorber piston rod retaining spring of this utility model; Figure 2 This is a schematic diagram of the cross-section of the piston rod retaining spring of the split-type automotive shock absorber of this utility model. Figure 3 This is a schematic diagram of the piston rod of the split-type automotive shock absorber piston rod retaining spring of this utility model. Figure 4 This is a perspective view of the stop block of the piston rod retaining spring of the split-type automotive shock absorber of this utility model. Figure 5 This is a schematic diagram showing the installation and fixing of the piston rod retaining circlip of the split-type automotive shock absorber of this utility model.

[0014] In the diagram: 1. Left half ring; 2. Right half ring; 3. Snap ring groove; 4. Stop block; 41. Snap ring clamping groove; 42. Lug; 5. Piston rod; 6. Bolt; 7. Nut. Detailed Implementation

[0015] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0016] Please refer to the reference. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 According to an embodiment of the present invention, a split-type automotive shock absorber piston rod retainer includes a left half-ring 1 and a right half-ring 2, both of which are semi-ring bodies; the left half-ring 1 and the right half-ring 2 are matched in shape and size, and the left half-ring 1 and the right half-ring 2 are spliced ​​together to form a complete ring.

[0017] Preferably, the central angle between the left half-ring 1 and the right half-ring 2 is 180°.

[0018] like Figure 3As shown, a groove 3 for inserting the snap ring is provided on the outer wall of the piston rod 5. The groove 3 shown is an arc-shaped groove, and the shape and size of the groove 3 are adapted to the shape and size of the left half ring 1 and the right half ring 2.

[0019] Preferably, in order to flexibly adjust the position of the retaining ring to adapt to different road sections, several identical retaining grooves 3 are evenly spaced on the outer wall of the piston rod 5 to facilitate the adjustment of the retaining ring at any time.

[0020] like Figure 4 As shown, furthermore, to prevent the retaining ring from falling out of the retaining groove 3, a stop block 4 for fixing the retaining ring is also provided. The stop block 4 is a split ring structure adapted to the retaining ring, including a left stop block and a right stop block. The inner diameter of the stop block 4 is adapted to the diameter of the piston rod 5. A retaining ring clamping groove 41 is provided on the inner side wall of the stop block 4. The shape and size of the retaining ring clamping groove 41 are adapted to the shape and size of the left half ring 1 and the right half ring 2. A lug 42 is provided at the port position of the outer side wall of the stop block 4. The lug 42 is fixedly connected to the outer side wall of the stop block 4 to form an integrated structure. The lug 42 is provided with a bolt hole for the bolt 6 to pass through. During installation, the left and right blocks are placed on the outer sides of the left and right semi-rings respectively. The retaining ring clamping groove 41 is aligned with the outer wall of the retaining ring and inserted radially. After the left and right blocks are aligned, the bolts 6 are passed through the lugs 42 of the left and right blocks in sequence. The other end of the bolts 6 is locked with the nuts 7 to complete the fixed connection of the left and right blocks. The block 4 applies a force opposite to that of the piston rod to fix the retaining ring between the piston rod 5 and the block 4, thereby preventing the retaining ring from falling off.

[0021] Preferably, the retaining ring is made of 60Si2Mn spring steel, which is heat-treated to HRC35-40 after wire cutting and surface phosphate treatment; stainless steel or titanium alloy can also be used to adapt to different working conditions.

[0022] like Figure 5 As shown, during installation, the left half ring 1 is first inserted into the bottom of the slot 3. After the right half ring 2 is pressed in radially and inserted into the slot 3, the left and right stops are placed on the outer sides of the left and right half rings respectively. The retaining spring clamping groove 41 is aligned with the outer wall of the retaining spring and inserted radially. After the left and right stops are aligned, the bolts 6 are passed through the lugs 42 of the left and right stops in sequence. The other end of the bolts 6 is locked by the nut 7 to complete the fixing and locking of the retaining ring.

[0023] As described above, the split-type automotive shock absorber piston rod retainer of this utility model divides the traditional integral ring retainer structure into two mutually cooperating semi-rings, left half-ring 1 and right half-ring 2. Compared with the traditional retainer, it is more convenient to install. At the same time, the radial installation avoids the problem of scratching the electroplated layer of the piston rod caused by axial installation of the retainer.

[0024] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A split-type automotive shock absorber piston rod retaining ring, comprising a retaining ring and a piston rod (5) for mounting the retaining ring, characterized in that: It also includes a stop block (4) for preventing the snap ring from falling off. The snap ring is a split semi-ring structure, including a left half ring (1) and a right half ring (2). The shape and size of the left half ring (1) and the right half ring (2) are matched. The left half ring (1) and the right half ring (2) are spliced ​​together to form a complete ring. The outer wall of the piston rod (5) is provided with a snap groove (3) for the snap ring to be inserted. The stop block (4) is a split ring structure that matches the snap ring, including a left stop block and a right stop block. The inner diameter of the stop block (4) matches the diameter of the piston rod (5). A snap ring clamping groove (41) is provided on the inner wall of the stop block (4). The shape and size of the snap ring clamping groove (41) match the shape and size of the left half ring (1) and the right half ring (2).

2. The split-type automotive shock absorber piston rod retaining ring as described in claim 1, characterized in that: The slot (3) shown is an arc-shaped slot. The shape and size of the slot (3) are compatible with the shape and size of the left half ring (1) and the right half ring (2).

3. The split-type automotive shock absorber piston rod retaining ring as described in claim 1, characterized in that: The central angle between the left half-ring (1) and the right half-ring (2) is 180°.

4. The split-type automotive shock absorber piston rod retaining ring as described in claim 1, characterized in that: The number of slots (3) is several, and they are evenly spaced on the outer surface of the piston rod (5).

5. The split-type automotive shock absorber piston rod retaining ring as described in claim 1, characterized in that: The outer wall of the stop (4) is provided with a lug (42), which is fixedly connected to the outer wall of the stop (4) to form an integrated structure. The lug (42) is provided with a bolt hole for the bolt (6) to pass through.

6. The split-type automotive shock absorber piston rod retaining spring as described in claim 1, characterized in that: The left half ring (1) and the right half ring (2) are made of 60Si2Mn spring steel, which is heat-treated to HRC35-40 after wire cutting.

7. The split-type automotive shock absorber piston rod retaining ring as described in claim 1, characterized in that: The left half-ring (1) and the right half-ring (2) are made of stainless steel or titanium alloy.

8. The split-type automotive shock absorber piston rod retaining spring as described in claim 1, characterized in that: The surfaces of the left half ring (1) and the right half ring (2) are subjected to phosphating treatment.

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