CN210531413U - Needle bearing for steering column of steering wheel - Google Patents

Abstract

The utility model provides a bearing for steering wheel steering column, including outer lane, kingpin and holder, the outer lane including elastic sleeve and punching press circle, punching press circle and steering column between be formed with the raceway that supplies the kingpin installation, punching press circle on set up and radially link up its inside and outside joint-cutting, and joint-cutting intercommunication punching press circle axial both sides, elastic sleeve elasticity parcel in the punching press circle outside. The utility model provides a suitability is stronger, can avoid the too big or the needle bearing who is used for steering wheel steering column of undersize of play.

Description

Needle bearing for steering column of steering wheel

Technical Field

The utility model relates to a bearing especially relates to a bearing for steering wheel steering column.

Background

A needle bearing for a steering column of an automobile steering wheel is generally used in a transmission of an equipment such as an automobile and a machine tool where a rotational speed is low, a requirement for precision is high, and a space is small, and generally includes a needle roller, an outer ring, and a retainer for spacing the needle rollers, a raceway for mounting the needle roller is formed between the outer ring and the steering column, and the needle bearing is used to restrain radial looseness of the steering column of the steering wheel when the steering wheel rotates.

However, in the needle roller bearing in the prior art, due to the existence of tolerance in the process of stamping forming, the play of the needle roller bearing can only be kept in a range of values, which also causes that under extreme conditions, the noise is larger due to the existence of overlarge play, and the operation is not stable; or extreme conditions such as small play, easy dead locking or damage of the bearing, and the like.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a suitability is stronger, can avoid the too big or undersize needle bearing who is used for steering wheel steering column of play.

In order to realize the above object, the utility model provides a bearing for steering wheel steering column, including outer lane, kingpin and holder, the outer lane including elastic sleeve and stamping ring, stamping ring and steering column between be formed with the raceway that supplies the kingpin installation, the stamping ring on set up and radially link up its inside and outside joint-cutting, and joint-cutting intercommunication stamping ring axial both sides, elastic sleeve elasticity parcel in the stamping ring outside.

The technical scheme has the advantages that: due to the arrangement of the cutting seams on the stamping ring, when the downstream clearance of the bearing is too small in an extreme condition, the inner walls on two sides of the cutting seams of the stamping ring are far away, so that the inner diameter of the bearing is increased; when the play of bearing was too big, through the elastic sleeve of elasticity compress tightly in the punching press circle outside, the both sides inner wall that makes the punching press circle kerf is close to mutually, makes the bearing remain throughout under good running state, compares prior art, because the tolerance exists, and the too big or undersize of play of bearing leads to not steadily operating or the card is dead under the extreme condition, and its suitability is stronger, can avoid because the too big or undersize condition emergence of play that the tolerance leads to.

The utility model discloses can further set up to: the cutting seam comprises an obliquely arranged middle section, and the length direction of the middle section is intersected with the axis of the needle roller.

Through further setting, avoid the kingpin at the in-process of motion, because the axis direction of kingpin is unanimous with the length direction of joint-cutting, lead to the joint-cutting to cause the interference to the motion of kingpin.

The utility model discloses can further set up to: the cutting seam comprises side sections arranged on two sides of the middle section, and the side sections are arranged in parallel with the axis of the needle roller.

Through further setting up, can guarantee that the border that the punching press circle formed the joint-cutting atress when the kingpin moves more even, avoid the punching press circle to be located the holding surface undersize of joint-cutting both sides department, and lead to the border atress of punching press circle in joint-cutting both sides department too big, the emergence fracture.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of an outer ring in an embodiment of the present invention;

fig. 3 is an enlarged view of a in fig. 2 according to an embodiment of the present invention.

Detailed Description

The utility model discloses a needle bearing embodiment for steering wheel steering column is shown in fig. 1-3: the needle roller bearing structure comprises an outer ring 1, needle rollers 2 and a retainer 3, wherein the outer ring 1 comprises an elastic sleeve 11 and a stamping ring 12, a roller path for mounting the needle rollers 2 is formed between the stamping ring 12 and a steering column 5, a cutting seam 121 which radially penetrates through the stamping ring 12 is formed in the stamping ring 12, the cutting seam 121 is communicated with two axial sides of the stamping ring 12, and the elastic sleeve 11 is elastically wrapped on the outer side of the stamping ring 12. The punching ring 12 is provided with a cutting slit 121, the cutting slit 121 is communicated with the inside and the outside of the punching ring 12 and two axial sides, and the elastic sleeve 11 is elastically pressed on the outside of the punching ring 12. In this embodiment, the elastic sleeve 12 further includes a rib 122 and a plurality of anti-slip grooves 123 located at two sides of the elastic sleeve, the rib 122 extends toward the direction of the steering shaft, and the rib 122 is pressed against two sides of the pressing ring to prevent axial movement between the rib 122 and the pressing ring 12. The slit 121 includes an inclined middle section 1211, and the length direction of the middle section 1211 intersects with the axis of the needle roller 2. In this embodiment, the intermediate section 1211 forms an angle with the axis of the needle roller 2, and the angle is preferably 45 degrees, so that the length of the slit 121 is shortened while the movement of the needle roller 2 is not interfered. The slit 121 includes side sections 1212 disposed at both sides of the middle section 1211, and the side sections 1212 are disposed in parallel with the axis of the needle roller 2.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims (3)

1. The utility model provides a needle bearing for steering wheel steering column, including outer lane, kingpin and holder, its characterized in that: the outer ring comprises an elastic sleeve and a stamping ring, a roller path for mounting the rolling needle is formed between the stamping ring and the steering column, a cutting seam which radially penetrates through the stamping ring is formed in the stamping ring, the cutting seam is communicated with two axial sides of the stamping ring, and the elastic sleeve is elastically wrapped on the outer side of the stamping ring.

2. The needle bearing of claim 1, wherein: the cutting seam comprises an obliquely arranged middle section, and the length direction of the middle section is intersected with the axis of the needle roller.

3. The needle bearing of claim 2, wherein: the cutting seam comprises side sections arranged on two sides of the middle section, and the side sections are arranged in parallel with the axis of the needle roller.

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