Automobile steering column crushing device

Abstract

An upper tubular column and a lower tubular column are in axial clearance fit, a first pulling plate is fixedly connected with the upper tubular column, the first pulling plate is provided with a clamping protrusion assembly and a clamping groove, a second pulling plate is provided with a strip-shaped sliding way and a limiting block, the clamping protrusion assembly is in axial sliding fit with the strip-shaped sliding way, and the clamping groove is provided with a clamping groove. The clamping groove is matched and connected with the limiting block through an injection pin. When violent collision occurs, impact force is larger than connecting force of the injection molding pin, the injection molding pin is broken, the limiting block slides along the clamping groove, and the clamping convex assembly of the first pulling plate slides along the sliding groove, so that the upper tubular column moves backwards, a larger space is vacated between a driver and the steering wheel, the effect of the safety air bag is larger, and the safety of the driver is improved. The possibility that the chest of the driver collides with the steering wheel is reduced, or the damage to the chest of the driver colliding with the steering wheel is reduced, and good buffering and crushing energy absorption effects are achieved. The upper pipe column is prevented from twisting in the crushing process, and it is guaranteed that the steering pipe column collapses in the designed ideal direction.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering, in particular to an automobile steering column crushing device. Background Art

[0002] The steering column of a car is located in front of the driver's body in the car and is connected to the chassis through structures such as brackets. When the vehicle collides, in order to avoid crushing the driver, the existing steering columns are all crushable. When the vehicle collides, the crushable steering column will collapse downward instead of pressing on the driver. However, the current crushable structure will twist when the steering column collapses downward, and it is impossible to ensure that the steering column does not deviate from the ideal collapse direction originally designed, resulting in other in-vehicle components such as the dashboard near the steering column being crushed, losing the steering function, and making the vehicle unable to drive normally after the steering column is completely crushed. Utility Model Content

[0003] In view of the above technical problems, the utility model proposes a vehicle steering column crushing device, in which the convex assembly slides axially along the strip slide, and the limit block slides along the groove to prevent the upper column from twisting during the crushing process, thereby ensuring that the steering column collapses along the ideal designed direction.

[0004] The technical solution adopted by the utility model is as follows: a vehicle steering column crushing device, comprising an upper column, a lower column, a first pull plate and a second pull plate for fixedly connected to the cross beam of the entire vehicle, the upper column and the lower column are matched with axial clearance, the first pull plate is fixedly connected to the upper column, the first pull plate is provided with a convex assembly and a groove, the second pull plate is provided with a strip slide and a limit block, the convex assembly is matched with the strip slide axially in sliding cooperation, and the groove is connected to the limit block by an injection pin.

[0005] Optionally, the first pulling plate includes a first connecting plate, a second connecting plate and a third connecting plate connected in sequence, the second connecting plate is provided with a convex groove for cooperating with the upper pipe column, the first connecting plate and the third connecting plate are respectively provided with the clamping groove, and the second connecting plate is provided with the clamping convex assembly.

[0006] Optionally, the second pulling plate includes a fourth connecting plate, a fifth connecting plate and a sixth connecting plate connected in sequence, the fourth connecting plate and the sixth connecting plate are respectively provided with the limiting blocks, and the fifth connecting plate is provided with the strip slide.

[0007] Optionally, the clamping convex assembly includes a screw and a limiting pad, the screw includes a nail portion and a limiting portion integrally connected to the nail portion, the first pull plate is provided with a screw hole cooperating with the nail portion, the limiting pad is located between the limiting portion and the first pull plate, and the second pull plate is provided with the strip slide slidably cooperating with the limiting pad.

[0008] Optionally, the limiting pad is made of flexible material.

[0009] Optionally, the limit block includes a limit body and limit wings located on both sides of the limit body, the limit wings are provided with limit grooves, the limit body is movably located in the groove of the slot, the limit groove is slidably matched with the slot wall of the slot, and the limit wings and the slot wall of the slot are connected by injection pins.

[0010] Optionally, the card slot is a V-shaped slot, and the limiting slot is an inclined slot that slidably cooperates with the slot wall of the card slot.

[0011] Optionally, the slot is a U-shaped slot, and the limiting slot is a linear slot that slidably cooperates with a slot wall of the slot.

[0012] The beneficial effects of the utility model are as follows: the upper column is connected to the steering wheel, the injection pin is made of plastic, and when a violent collision occurs, the impact force is greater than the connection force of the injection pin, the injection pin breaks, the limit block slides along the card slot, and the card convex assembly of the first pull plate slides along the slide slot, so that the upper column moves backward, freeing up more space between the driver and the steering wheel, making the airbag more effective, reducing the possibility of the driver's chest hitting the steering wheel or reducing the damage caused by the driver's chest hitting the steering wheel, and playing a good role in buffering and crushing energy absorption. The card convex assembly slides axially along the strip slideway to prevent the upper column from twisting during the crushing process, and ensure that the steering column collapses along the ideal direction of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a vehicle steering column crushing device proposed in an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of a V-shaped groove of a vehicle steering column crushing device proposed in an embodiment of the utility model;

[0015] Figure 3 A schematic diagram of a U-shaped slot of a vehicle steering column crushing device proposed in an embodiment of the utility model.

[0016] The marks in the accompanying drawings are: 1. upper tube column; 2. lower tube column; 3. first pull plate; 31. first connecting plate; 32. second connecting plate; 33. third connecting plate; 34. slot; 35. convex groove; 36. injection hole; 4. second pull plate; 41. fourth connecting plate; 42. fifth connecting plate; 43. sixth connecting plate; 44. strip slide; 5. convex assembly; 51. screw; 52. limit pad; 6. limit block; 61. limit body; 62. limit wing; 63. limit groove; 64. injection pin. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figures 1 to 3 As shown, this embodiment discloses a vehicle steering column crushing device, including an upper column 1, a lower column 2, a first pull plate 3 and a second pull plate 4 for being fixedly connected to the cross beam of the whole vehicle, the upper column 1 and the lower column 2 are matched with axial clearance, the first pull plate 3 is fixedly connected to the upper column 1, the first pull plate 3 is provided with a convex assembly 5 and a groove 34, the second pull plate 4 is provided with a strip slide 44 and a limit block 6, the convex assembly 5 is matched with the strip slide 44 axially sliding, and the groove 34 is matched with the limit block 6 by an injection pin 64. The injection pin 64 is made of plastic, and the upper column 1 is connected to the steering wheel. When a violent collision occurs, the impact force is greater than the connection force of the injection pin 64, the injection pin 64 breaks, the limit block 6 slides along the card slot 34, and the card convex component 5 of the first pull plate 3 slides along the slide slot, so that the upper column 1 moves backward, freeing up more space between the driver and the steering wheel, making the airbag more effective, reducing the possibility of the driver's chest hitting the steering wheel or reducing the damage caused by the driver's chest hitting the steering wheel, and playing a good role in buffering and crushing energy absorption. The card convex component 5 slides axially along the strip slide 44 to prevent the upper column 1 from twisting during the crushing process, and ensure that the steering column collapses in the ideal direction of the design. The length of the strip slide 44 can be changed according to the required collapse distance of the steering column.

[0019] like Figure 1 As shown, the first pull plate 3 includes a first connecting plate 31, a second connecting plate 32 and a third connecting plate 33 connected in sequence, the second connecting plate 32 is provided with a convex groove that cooperates with the upper pipe column 1, the first connecting plate 31 and the third connecting plate 33 are respectively provided with the clamping groove 34, and the second connecting plate 32 is provided with the clamping convex assembly 5. The first connecting plate 31, the second connecting plate 32 and the third connecting plate 33 are an integrally formed structure. The second pull plate 4 includes a fourth connecting plate 41, a fifth connecting plate 42 and a sixth connecting plate 43 connected in sequence, the fourth connecting plate 41 and the sixth connecting plate 43 are respectively provided with the limit block 6, and the fifth connecting plate 42 is provided with the strip slide 44. The fourth connecting plate 41, the fifth connecting plate 42 and the sixth connecting plate 43 are an integrally formed structure.

[0020] like Figure 2 and 3As shown, the clamping convex assembly 5 includes a screw 51 and a limiting pad 52, the screw 51 includes a nail portion and a limiting portion integrally connected to the nail portion, the first pull plate 3 is provided with a screw hole matched with the nail portion, the limiting pad 52 is located between the limiting portion and the first pull plate 3, and the second pull plate 4 is provided with the strip slide 44 that slidably cooperates with the limiting pad 52. The diameter of the limiting pad 52 is greater than the diameter of the strip slide 44, and the limiting pad 52 moves along the strip slide 44 to prevent the first pull plate 3 and the second pull plate 4 from being separated from each other. The limiting pad 52 is made of a flexible material. The friction generated when the limiting pad 52 moves along the strip slide 44 is reduced.

[0021] like Figure 2 and 3 As shown, the limit block 6 includes a limit body 61 and limit wings 62 located on both sides of the limit body 61, the limit wings 62 are provided with limit grooves 63, the limit body 61 is movably located in the groove of the card slot 34, the limit groove 63 is slidably matched with the groove wall of the card slot 34, and the limit wings 62 and the groove wall of the card slot 34 are matched and connected by injection pins 64. The groove wall of the card slot 34 and the limit wings 62 are respectively provided with injection holes 36 for the injection pins 64 to pass through, the limit block 6 is an integrally formed structure, and the limit body 61 is fixedly connected to the second pull plate 4 by screws 51. The card slot 34 is a V-shaped groove, and the limit groove 63 is an inclined groove that is slidably matched with the groove wall of the card slot 34. The card slot 34 is a U-shaped groove, and the limit groove 63 is a straight groove that is slidably matched with the groove wall of the card slot 34. The shape of the card slot 34 can also be other shapes.

[0022] It is understandable that the specific embodiments described above are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts. All equivalent structural transformations made using the contents of the specification and drawings of this utility model, directly or indirectly used in other related technical fields, are similarly included in the protection scope of this utility model.

Claims

1. A vehicle steering column crushing device, characterized in that: It includes an upper tube column, a lower tube column, a first pull plate and a second pull plate fixedly connected to the cross beam of the whole vehicle. The upper tube column and the lower tube column are matched with axial clearance. The first pull plate is fixedly connected to the upper tube column. The first pull plate is provided with a convex assembly and a groove. The second pull plate is provided with a strip slide and a limit block. The convex assembly is matched with the strip slide axially, and the groove is connected with the limit block by an injection pin.

2. The automobile steering column crushing device according to claim 1, characterized in that: The first pulling plate includes a first connecting plate, a second connecting plate and a third connecting plate connected in sequence, the second connecting plate is provided with a convex groove that cooperates with the upper pipe column, the first connecting plate and the third connecting plate are respectively provided with the clamping groove, and the second connecting plate is provided with the clamping convex assembly.

3. The automobile steering column crushing device according to claim 1, characterized in that: The second pulling plate includes a fourth connecting plate, a fifth connecting plate and a sixth connecting plate which are connected in sequence, the fourth connecting plate and the sixth connecting plate are respectively provided with the limiting blocks, and the fifth connecting plate is provided with the strip slideway.

4. The automobile steering column crushing device according to claim 1, characterized in that: The clamping convex assembly includes a screw and a limiting pad, the screw includes a nail portion and a limiting portion integrally connected to the nail portion, the first pull plate is provided with a screw hole matched with the nail portion, the limiting pad is located between the limiting portion and the first pull plate, and the second pull plate is provided with the strip slide that slidably cooperates with the limiting pad.

5. The automobile steering column crushing device according to claim 4, characterized in that: The limiting pad is made of flexible material.

6. The automobile steering column crushing device according to claim 1, characterized in that: The limit block includes a limit body and limit wings located on both sides of the limit body, the limit wings are provided with limit grooves, the limit body is movably located in the groove of the card slot, the limit groove cooperates with the groove wall of the card slot, and the limit wings and the groove wall of the card slot are connected by injection pins.

7. The automobile steering column crushing device according to claim 6, characterized in that: The clamping groove is a V-shaped groove, and the limiting groove is an inclined groove that is slidably matched with the groove wall of the clamping groove.

8. The automobile steering column crushing device according to claim 6, characterized in that: The clamping slot is a U-shaped slot, and the limiting slot is a linear slot that is slidably matched with the slot wall of the clamping slot.

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