Crumple device of angle-adjustable steering column and steering column

Abstract

The utility model relates to an angle-adjustable crumple device of a steering column and the steering column. Comprising a tubular column shell, clamping pieces and clamping pieces, the tubular column shell is sleeved outside an inner tubular column, the upper side of the tubular column shell is provided with an opening, the clamping pieces are placed in the tubular column shell and on the inner tubular column, the clamping pieces are arranged on the clamping pieces, and the clamping pieces are used for tightly pressing the clamping pieces on the inner tubular column. The metal plate shell is used for replacing an aluminum cast pipe, clamping pieces, clamping pieces and other structures are additionally arranged for pressing the inner pipe column, the crumple force is increased, the structure is simple, the development period can be shortened, loss of parts during development is reduced, and therefore the product cost is reduced, the part manufacturing difficulty is reduced, and the stability and reliability of product performance are improved.

Description

Technical Field

[0001] The utility model relates to the field of automotive steering systems, and more specifically, to a collapsible structure and a steering column of an angle-adjustable steering column. Background Art

[0002] With the improvement of people's living standards, the requirements for automotive driving safety are getting higher and higher. To prevent the impact of the steering wheel on the driver, a steering column with a collapsible function has gradually been applied to automobiles. When a vehicle collision occurs, the steering column undergoes two to three stages of collapse to disperse some of the impact force generated by the collision and transmitted from the steering column and the steering wheel to the human body.

[0003] Most of the collapsible devices for steering columns in the prior art use complex structures such as energy-absorbing sheets or tear plates to achieve collapse. For example, Figure 15 , in the prior patent 202111641218.1, a collapsible structure of a steering column. When a vehicle collision occurs, under the impact force of the airbag, the column tube 100 of the steering column will move downward, while the support sleeve 500 remains stationary. As a result, the toothed stone assembly 600 connected to the support sleeve 500 remains stationary. Since the toothed stone on the toothed stone assembly 600 meshes with the toothed structure 400, the upper plane of the energy-absorbing sheet 300 with the toothed structure 400 remains stationary, while the lower plane of the energy-absorbing sheet 300 connected to the column tube 100 by bolts will move downward along the steering column with the column tube 100. At this time, relative movement occurs between the upper plane and the lower plane, causing the rivets connecting the energy-absorbing sheet 300 and the C-shaped support 200 to break, generating a peak collapse force. At the same time, since the energy-absorbing sheet 300 undergoes bending deformation, it can reduce or avoid the harm of the steering wheel to the driver during a frontal collision accident of the vehicle.

[0004] For another example, Figure 16 , in the prior patent 201710567439.6, a collapsible sliding structure of a steering column. During a vehicle collision, when the driver impacts the steering wheel, the impact force transmitted to the steering column 100 will drive the upper bracket 200 to move downward. The fixing plate 400 of the tear plate 300 fixed to the upper bracket 200 will tear along the tear groove 500, thereby absorbing the energy generated by the vehicle collision to protect the safety of the driver.

[0005] The above two methods of adding complex structures such as energy-absorbing sheets and tear plates to achieve collapse have a complex energy-absorbing structure. Especially during the development period, a large number of tests and verifications are required, resulting in a long time cycle. Moreover, a large number of components such as energy-absorbing sheets and tear plates are consumed during the experiment, increasing costs. Summary of the Invention

[0006] The purpose of the present utility model is to provide a collapsible device and a steering column of an angle-adjustable steering column, which have a simple structure, shorten the development cycle, and reduce costs.

[0007] Technical solution of the utility model:

[0008] A collapsible device for an angle-adjustable steering column, comprising a column housing, a clamping member and a clamping plate. The column housing is sleeved outside the inner column. The upper side of the column housing is open. The clamping plate is placed in the column housing and on the upper surface of the inner column. The clamping member is arranged on the upper surface of the clamping plate and is used to tightly press the clamping plate against the inner column.

[0009] Advantages of the utility model:

[0010] 1. The collapsible device of the present application presses the inner column through the clamping plate, the clamping member, etc. The structure is simple, the collapsible force is increased, the development cycle can be shortened, the loss of parts during development can be reduced, so the product cost is reduced, the manufacturing difficulty of parts is also reduced, and the stable reliability of product performance is improved. Description of the drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0012] Figure 1 Schematic structural diagram of an angle-adjustable steering column with a first collapsible device;

[0013] Figure 2 Schematic structural diagram of an angle-adjustable steering column with a first collapsible device;

[0014] Figure 3 For Figure 1 Longitudinal sectional view;

[0015] Figure 4 For Figure 3 Enlarged view at A in;

[0016] Figure 5 Schematic structural diagram of the clamping bolt in the first collapsible device.

[0017] Figure 6 Schematic structural diagram of the clamping plate in the first collapsible device.

[0018] Figure 7 Schematic structural diagram of the clamping plate in the first collapsible device.

[0019] Figure 8 Schematic structural diagram of an angle-adjustable steering column with a second collapsible device;

[0020] Figure 9 Schematic diagram of an angle-adjustable steering column structure with a second type of collapsible device;

[0021] Figure 10 is Figure 8 Longitudinal sectional view;

[0022] Figure 11 Sectional view of an angle-adjustable steering column with a second type of collapsible device;

[0023] Figure 12 Schematic diagram of the clamping spring in the second type of collapsible device.

[0024] Figure 13 Schematic diagram of the clamping piece in the second type of collapsible device.

[0025] Figure 14 Schematic diagram of the clamping piece in the second type of collapsible device.

[0026] Figure 15 Schematic diagram of the first type of collapsible device in the prior art.

[0027] Figure 16 Schematic diagram of the second type of collapsible device in the prior art.

[0028] Reference numerals:

[0029] Inner pipe column 1; bracket 2; handle 3; handle pin shaft 4; cam disc 5; elastic piece 6; axial bearing 7; nut 8; cam block 9; collapsible device 10; pipe column housing 11; clamping member 12; clamping piece 13; clamping spring 14; connecting hole 15; pressing piece 16; hook 17; connecting plate 18; bolt connecting member 19; disc spring 20; gasket 21; rivet 22. Detailed implementation manners

[0030] In order to solve the problems in the background art, a collapsible device for an angle-adjustable steering column of the present application is specifically invented.

[0031] It should be noted that in the description of the present application, terms such as "above", "below", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0033] As Figure 1 , 2 , 3, 8, 9, 10 show,

[0034] A steering column of the present application includes an inner pipe column 1, a bracket 2, a handle 3 and a handle clamping mechanism. The handle clamping mechanism includes a handle pin shaft 4, a cam disc 5, an elastic sheet 6, an axial bearing 7, a nut 8 and a cam block 9 (the specific structure of this part is the prior art and will not be elaborated here). The collapse device 10 described in the present application is installed on one side or both sides of the bracket.

[0035] A collapse device for an angle-adjustable steering column of the present application includes a pipe column housing 11, a clamping member 12 and a clamping sheet 13. The pipe column housing is sleeved outside the inner pipe column. The upper side of the pipe column housing is open. The clamping sheet is placed inside the pipe column housing and on top of the inner pipe column. A clamping member is provided on top of the clamping sheet, and the clamping member is used to tightly press the clamping sheet against the inner pipe column. The pipe column housing is an aluminum casting pipe or a sheet metal housing.

[0036] Two structures of the clamping member and the clamping sheet of the present application are listed:

[0037] The first one: As Figures 1-7 shows, the clamping member 12 is a clamping pin, the clamping sheet 13 is a plastic clamping sheet, and a clamping spring 14 is between the clamping pin and the clamping sheet. Pin holes are opened on two opposite side walls of the pipe column housing, and the clamping pin passes through the two pin holes, and the clamping pin presses the clamping spring and the plastic clamping sheet towards the inner pipe column.

[0038] The clamping spring is an arc-shaped metal sheet. The clamping sheet is arc-shaped as a whole. The clamping sheet is composed of a connecting hole 15 in the middle and pressing sheets 16 on both sides. The surfaces of the two pressing sheets in contact with the inner pipe column are rough surfaces, and a hook 17 is provided on the other side of each of the two pressing sheets. The arc-shaped metal sheet is pressed into the two hooks on top of the clamping sheet. The clamping force on the inner pipe column can be adjusted by adjusting the distance between the clamping pin and the clamping spring or the arc of the clamping spring.

[0039] The second one: As Figures 8-14As shown in the figure, a connecting plate 18 is fixedly installed between the two side walls of the pipe column housing. In the middle of the connecting plate is a bolt connecting member 19 with internal threads. A disc spring 20 and a gasket 21 are provided between the clamping member and the clamping piece. The clamping member is a clamping bolt with external threads. The gasket is placed on the clamping piece, and the disc spring is placed on the gasket. The clamping bolt is threadedly connected to the bolt connecting member, and the lower part of the clamping bolt abuts against the disc spring and presses downward.

[0040] The clamping piece 13 is a plastic clamping piece. The side of the clamping member facing the inner pipe column is a metal sheet. The side of the clamping piece facing the inner pipe column is an arc surface and is a rough surface. Two hooks 17 are provided on the other surface of the clamping piece. The gasket is sleeved on the two hooks, and the disc spring is placed on the gasket. The pressing force can be adjusted by rotating the clamping bolt.

[0041] During use, when the handle is closed, the collapse device of the present application is used in cooperation with the handle to clamp the inner pipe column to participate in the collapse. According to the magnitude of the pressure of the clamping member on the inner pipe column, the collapse force during the collapse process can be changed. When the vehicle collides and is impacted by an external force, the inner pipe column moves, and the rivet 22 between the inner pipe column and the pipe column housing is pulled off. The collapse device of the present application can increase the friction force between the inner pipe column and the pipe column housing, increase the collapse force, and reduce the force hitting the driver.

[0042] The inner pipe column is pressed by the collapse device of the present application with adjustable pressing force, which improves the friction force between the sheet metal housing and the inner pipe column bracket. This structure can also be applied to a mechanical steering pipe column with an aluminum cast pipe as the housing.

[0043] In the prior art, complex structures such as energy absorption sheets and tearing plates are added to cooperate to achieve collapse, and a large number of tests and verifications are required during the development period, and the time cycle is long. The present application uses a sheet metal housing or an aluminum cast pipe, plus a collapse device with adjustable pressing force, which can shorten the development cycle, thereby reducing the product cost and the manufacturing difficulty of parts, and improving the stable reliability of the product performance. It solves the problem that the clamping force provided by the handle is insufficient and the collapse requirement cannot be achieved only by the clamping method of the handle. Good rigidity performance can still be provided during the angle adjustment process when the handle is opened. It does not affect the angle adjustment process.

[0044] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and do not depart from the content of the technical solution of the present invention, and design similar structural manners and implementations to the technical solution without creative efforts based on the technical essence of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A collapsible device for a steering column with adjustable angle, characterized in that: It includes a pipe column housing, a clamping member and a clamping piece. The pipe column housing sleeves outside the inner pipe column. The upper side of the pipe column housing is open. The clamping piece is placed inside the pipe column housing and on top of the inner pipe column. A clamping member is provided on top of the clamping piece, and the clamping member is used to tightly press the clamping piece against the inner pipe column.

2. The collapse device of a steerable column with adjustable angle according to claim 1, characterized in that: The clamping member is a clamping pin, the clamping piece is a plastic clamping piece, and a clamping spring is arranged between the clamping pin and the clamping piece. Pin holes are opened on two opposite side walls of the pipe column housing. The clamping pin passes through the two pin holes, and the clamping pin presses the clamping spring and the plastic clamping piece towards the inner pipe column.

3. The collapsible device of a steering column with adjustable angle according to claim 2, characterized in that: The clamping spring is an arc-shaped metal piece. The clamping piece is arc-shaped as a whole. The clamping piece is composed of a connecting hole in the middle and pressing pieces on both sides. The surfaces of the two pressing pieces in contact with the inner pipe column are rough surfaces. A hook is provided on the other side of each of the two pressing pieces. The arc-shaped metal piece is pressed into the two hooks on top of the clamping piece.

4. The collapsible device of a steerable column with adjustable angle according to claim 1, characterized in that: A connecting plate is fixedly installed between the two side walls of the pipe column housing. In the middle of the connecting plate is a bolt connecting member with internal threads. A disc spring and a gasket are arranged between the clamping member and the clamping piece. The clamping member is a clamping bolt with external threads. The gasket is placed on top of the clamping piece, the disc spring is placed on top of the gasket. The clamping bolt is threadedly connected to the bolt connecting member, and the bottom of the clamping bolt abuts against the disc spring and presses downwards.

5. The collapsible device of a steering column with adjustable angle according to claim 4, characterized in that: The clamping piece is a plastic clamping piece. The surface of the clamping member facing the inner pipe column is a metal piece. The surface of the clamping piece facing the inner pipe column is an arc surface and is a rough surface. Two hooks are provided on the other surface of the clamping piece. The gasket is sleeved on the two hooks, and the disc spring is placed on the gasket.

6. The collapsible device of a steerable column with adjustable angle according to claim 1, characterized in that: The pipe column housing is an aluminum cast pipe or a sheet metal housing.

7. A steering column, comprising an inner tube column, a bracket, a handle and a handle clamping mechanism, characterized in that: A crash device of a steering column with adjustable angle according to any one of claims 1-4 is installed on one side or both sides of the bracket.

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