Variable-dip-angle friction plate group of steering column
By designing a variable tilt friction pad assembly for the steering column, the problems of steering column adjustment range and weight reduction were solved, achieving a larger adjustment range and a smaller motion envelope volume, thus improving the performance of the car steering system.
Patent Information
- Application Number
- CN202520928092.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-05-13
AI Technical Summary
The existing steering column is insufficient in terms of adjustment range and lightweight design, and cannot meet the requirements of modern automobiles for a large adjustment range and high natural frequency.
A variable tilt friction plate assembly is adopted for the steering column. The friction plate assembly is composed of multiple alternating friction plates and shims. Combined with a locking shaft and a planar thrust bearing, the friction plate assembly achieves sliding movement, reducing the volume of the motion envelope, increasing the adjustment range, and achieving weight reduction.
It achieves a wider adjustment range and lighter weight, reduces interference from the mechanical structure, and improves product performance and the smoothness of adjustment.
Smart Images
Figure CN223750933U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of automobile steering system, concretely relates to a kind of steering column variable angle friction plate group. BACKGROUND
[0002] Steering column has angle adjustment and height adjustment function, with the renewal of car.The demand of driver to space is more and more big, which means, the range of steering column angle adjustment and height adjustment needs to be larger.
[0003] More and more car factory has put forward the requirement of large adjustment range to steering column, and the original structure cannot realize larger adjustment range due to large volume and limited space in vehicle.Meanwhile, more and more car factory has put forward the requirement of light weight and high natural frequency to steering column, and the original structure cannot meet the requirement of higher weight reduction and higher natural frequency due to large volume. UTILITY MODEL CONTENTS
[0004] The utility model is just for the above problem, make up for the deficiency of prior art, provide a kind of steering column variable angle friction plate group;The utility model can reduce the movement envelope volume of adjustment stroke, so that the mechanism has more activity space, so as to realize larger adjustment range.
[0005] To achieve the above object, the utility model adopts the following technical scheme.
[0006] The utility model provides a kind of steering column variable angle friction plate group, including cast tube, its characterized in that, two sides of the cast tube are connected with two sets of friction plate group respectively by pressing plate, the friction plate group can rotate on the cast tube, the friction plate group is all formed by alternately arranged multiple friction plate and multiple gasket, and the friction plate and the gasket are connected by rivet, the gap formed by the gasket between two sets of friction plate group on the same side is crossed and engaged with the friction plate, the friction plate is elongated structure, long round hole is arranged in the lower part of the friction plate, and locking shaft is arranged and simultaneously passes through the long round hole of all the friction plate, the friction plate group can linearly move along the locking shaft by the long round hole as sliding groove, after the locking shaft is assembled with peripheral locking mechanism, the friction plate group can be clamped and locked.
[0007] Further, the pressing plate is "eight" shaped structure, and the upper side is fastened on the both sides of the cast tube by upper bolt, and the lower side two ends are connected with friction plate group on the cast tube by lower bolt respectively.
[0008] More further, plane thrust bearing is arranged between the both sides of each set of friction plate group and the connecting place of cast tube and pressing plate, and the lower bolt simultaneously passes through the pressing plate, two plane thrust bearings, friction plate group and cast tube.
[0009] Further, an axle sleeve is arranged between the inner sides of the flat thrust bearings on both sides of each set of the friction plate group, and the axle sleeve is sleeved between the friction plate group and the lower bolt.
[0010] Further, a rotating shaft is connected to the groove area below the pressing plate on both sides of the cast pipe, the cast pipe can rotate around the axis of the rotating shaft, and the rotating shaft protrudes from both sides of the cast pipe to be assembled with the surrounding support.
[0011] The utility model discloses the beneficial effect.
[0012] The utility model discloses the traditional integration rotary arc friction plate is optimized to four sets of friction plate group two two combination into the form of connecting rod, and the displacement of the sliding groove of four sets of friction plate group is carried out to locking shaft, thereby the motion boundary size of structural member is reduced, the motion envelope volume of adjustment stroke is greatly reduced, and the mechanism has more activity space, thereby the greater adjustment range is realized, and more miniaturization is realized, and the light weight requirement is realized. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to make the technical problem, technical scheme and beneficial effect solved by the utility model more clearly, the following is in combination with the specific embodiment, and the utility model is further detailed. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.
[0014] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model.
[0015] Figure 2 It is the main view structure schematic diagram of the utility model.
[0016] Figure 3 It is the side view structure schematic diagram of the utility model.
[0017] Figure 4 It is the section structure schematic diagram of the utility model.
[0018] Figure 5 It is the section view of the friction plate group fixing point of the utility model.
[0019] Figure 6 It is the section view of the whole friction plate group of the utility model.
[0020] Marked in the drawing: 1 is cast pipe, 2 is friction plate group, 3 is pressing plate, 4 is friction plate, 5 is gasket, 6 is rivet, 7 is long circular hole, 8 is locking shaft, 9 is upper bolt, 10 is lower bolt, 11 is flat thrust bearing, 12 is axle sleeve, 13 is rotating shaft. SPECIFIC EMBODIMENT
[0021] The embodiment provides a steering column variable angle friction plate set, which comprises a cast pipe 1, two sets of friction plate sets 2 (a total of four sets) are connected to the cast pipe 1 through pressing plates 3 on both sides of the cast pipe 1, the pressing plate 3 is in the shape of an "eight", the upper side is fastened to the cast pipe 1 on both sides through upper bolts 9, and the lower side is connected to the cast pipe 1 through lower bolts 10 at both ends, and the friction plate set 2 can rotate on the cast pipe 1.
[0022] Rotary shafts 13 are connected to the cast pipe 1 below the groove area of the pressing plate 3 on both sides, the cast pipe 1 can rotate around the axis of the rotary shaft 13, the rotary shaft 13 protrudes from both sides of the cast pipe 1 and is used for assembly with a surrounding support, after the rotary shaft 13 is assembled with the surrounding support, a limiting function is realized. The axis of the rotary shaft 13 is perpendicular to the axis of the cast pipe 1 and intersects with the axis, the structure can stabilize the angle adjustment force, reduce the additional interference caused by different centers of the mechanical structure, and improve the performance of the product.
[0023] The friction plate set 2 is composed of a plurality of friction plates 4 and a plurality of gaskets 5 arranged alternately, the number of the friction plates 4 and the gaskets 5 is not limited, and the more the number is, the greater the friction is.
[0024] The friction plate 4 is in an elongated structure, a long circular hole 7 is arranged in the middle and lower part of the friction plate 4, and a locking shaft 8 is arranged and penetrates the long circular holes 7 of all the friction plates 4, the friction plate set 2 is arranged as a sliding groove through the long circular hole 7, when the angle is adjusted, the friction plate set 2 can be driven to move linearly along the locking shaft 8 through the long circular hole 7 sliding groove due to the constraint of the rotary shaft 13, after the locking shaft 8 is assembled with a surrounding locking mechanism, the locking shaft 8 can clamp and lock the friction plate set 2, and a locking function is realized.
[0025] The friction plate 4 and the gasket 5 are alternately connected through a rivet 6, the gap formed by the gasket 5 between the two sets of friction plate sets 2 on the same side is used for cross engagement assembly of the friction plates 4, after the engagement, the normal pressure generated by the surrounding locking mechanism acts together with the normal pressure, so that the upper and lower planes of each friction plate 4 are in close contact with each other, and the friction force is generated, and the friction force is the holding force of the steering column.
[0026] A plane thrust bearing 11 is arranged between the connection between the two sides of each set of friction plate sets 2 and the cast pipe 1 and the pressing plate 3, and the lower bolt 10 penetrates the pressing plate 3, the two plane thrust bearings 11, the friction plate set 2 and the cast pipe 1 at the same time. The plane thrust bearing 11 plays a role in reducing the friction coefficient in rotation, so that the angle adjustment force is smaller and smoother, and other means for reducing the friction coefficient can also be used, including but not limited to self-lubricating gaskets 5 or smearing lubricating grease and the like.
[0027] The shaft sleeve 12 is sleeved between the friction plate group 2 and the lower bolt 10, plays a role of eliminating clearance and rotating lubrication, makes the angle adjusting force smaller and smoother, and other means of reducing friction coefficient and eliminating clearance can also be used, including but not limited to self-lubricating bearings or clearance eliminating bearings and the like.
[0028] It can be understood that the above specific description of the utility model is only used for illustrating the utility model and is not limited to the technical solutions described in the utility model embodiments, and those skilled in the art should understand that the utility model can still be modified or replaced equivalently to achieve the same technical effect, as long as the use needs are met, which is within the protection scope of the utility model.
Claims
1. A variable rake friction disc pack for a steering column comprising a cast tube (1) characterised in that, The cast pipe (1) is connected with two sets of friction plate groups (2) on both sides through pressing plates (3), the friction plate groups (2) can rotate on the cast pipe (1), the friction plate groups (2) are composed of alternately arranged multiple friction plates (4) and multiple gaskets (5), and the friction plates (4) and the gaskets (5) are connected through rivets (6), the gap formed between the two sets of friction plate groups (2) on the same side through the gaskets (5) cross-engages the friction plates (4), the friction plates (4) are of an elongated structure, the lower part of the friction plates (4) is provided with a long circular hole (7), and a locking shaft (8) passes through the long circular holes (7) of all the friction plates (4) at the same time, the friction plate groups (2) can move linearly along the locking shaft (8) through the long circular holes (7) as sliding grooves, and the locking shaft (8) can clamp and lock the friction plate groups (2) after being assembled with a peripheral locking mechanism.
2. A variable rake friction plate set for a steering column as defined in claim 1, wherein The pressing plate (3) is of an "eight" shaped structure, the upper side is fastened on both sides of the cast pipe (1) through upper bolts (9), and the lower side is connected with the friction plate groups (2) on the cast pipe (1) through lower bolts (10) at both ends.
3. A variable rake friction plate set for a steering column as defined in claim 2 wherein, Plane thrust bearings (11) are arranged between the cast pipe (1) and the pressing plate (3) at the connection positions of both sides of each set of friction plate groups (2), and the lower bolts (10) pass through the pressing plate (3), the two plane thrust bearings (11), the friction plate groups (2) and the cast pipe (1) at the same time.
4. A variable rake friction plate set for a steering column as defined in claim 3 wherein, Axle sleeves (12) are arranged between the inner sides of the plane thrust bearings (11) on both sides of each set of friction plate groups (2), and the axle sleeves (12) are sleeved between the friction plate groups (2) and the lower bolts (10).
5. A variable rake friction plate set for a steering column as defined in claim 2 wherein, Rotary shafts (13) are connected with the cast pipe (1) below the pressing plate (3) on both sides, the cast pipe (1) can rotate around the rotary shafts (13), and the rotary shafts (13) protrude from both sides of the cast pipe (1) and are used for being assembled with peripheral supports.