An adjustable steering column with a collapse structure

Abstract

The invention discloses an adjustable steering column with a collapse structure, comprising an upper sleeve assembly, a lower sleeve assembly, a mounting plate installed on both sides of the lower sleeve assembly and an adjusting handle, and also comprising a collapse bar and an adjusting bolt, wherein the collapse bar is installed on the sleeve assembly, the first end of the adjusting bolt is connected to the adjusting handle, the second end of the adjusting bolt passes through the mounting plate, a plurality of limiting holes are opened on the collapse bar, a limiting member and an elastic member are installed on the adjusting bolt, the first end of the elastic member is connected to the adjusting bolt, and the second end of the elastic member is connected to the limiting member; when the adjusting handle is locked, the adjusting bolt is driven to rotate, and the limiting member installed in the adjusting bolt rotates to the top of the collapse bar, and there is always a limiting member at one place that enters the limiting hole of the collapse bar under the action of the elastic member to limit the movement of the collapse bar. When the adjusting handle is loosened, the adjusting bolt rotates, the limiting member exits the limiting hole of the collapse bar, and the steering wheel installed on the upper sleeve assembly can be adjusted forward and backward along the axis of the steering column.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to an adjustable steering column with a collapse structure. Background Art

[0002] The adjustable steering column is mainly used in EPS, or electric power steering system. When the car collides, the driver may be injured by the steering wheel and column, with disastrous consequences.

[0003] After the steering column of an existing automobile is axially adjusted for the steering wheel, the crush bar block sometimes does not fall into the waist-shaped hole of the crush bar, causing the crush force of the steering column to become smaller and unable to meet the technical requirements of the vehicle company for the crush force of the steering column. When the car collides, the steering column does not absorb enough impact force, causing greater injuries to the driver.

[0004] Therefore, it is necessary to improve it. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide an adjustable steering column with a collapse structure, which has a simple structure and high stability.

[0006] In order to achieve the above-mentioned object, the present invention provides an adjustable steering column with a collapse structure, comprising an upper sleeve assembly, a lower sleeve assembly, a mounting plate installed on both sides of the lower sleeve assembly and an adjustment handle, and also comprising a collapse bar and an adjustment bolt, wherein the first end of the collapse bar is installed on the upper sleeve assembly, the second end of the collapse bar is installed on the lower sleeve assembly, the first end of the adjustment bolt is connected to the adjustment handle, the second end of the adjustment bolt passes through the mounting plate, a plurality of limiting holes are opened on the collapse bar, a limiting member and an elastic member are installed at least at one place on the adjustment bolt, the first end of the elastic member is connected to the adjustment bolt, and the second end of the elastic member is connected to the limiting member;

[0007] When the adjusting handle is loosened, the adjusting bolt rotates, and the limiting member leaves the limiting hole;

[0008] When the adjustment handle is locked, at least one of the limiting members extends into the limiting hole under the action of the elastic member.

[0009] In a further technical solution, the adjusting bolt has two limit grooves, the two limit grooves are covered with a fixing plate, an elastic member and a limit member are arranged in the two limit grooves, a connecting hole is provided at the bottom of the limit groove, the first end of the elastic member abuts against the fixing plate, the second end of the elastic member abuts against the first end of the limit member, and the second end of the limit member extends out of the connecting hole.

[0010] In a further technical solution, the elastic member is a spring.

[0011] In a further technical solution, the limiting member is selected as a pin shaft.

[0012] In a further technical solution, the collapsible strip includes a mounting portion, a connecting portion, and a limiting portion. A plurality of the limiting holes are formed in the limiting portion. The mounting portion is mounted on the upper sleeve assembly. One end of the connecting portion is connected to the limiting portion, and the second end of the connecting portion is connected to the mounting portion.

[0013] In a further technical solution, the lower sleeve assembly is provided with a guide rail, a sliding groove is formed in the mounting portion, and the mounting portion extends into the guide rail.

[0014] In a further technical solution, a mounting groove is formed at the first end of the mounting portion, a mounting rivet is arranged on the mounting portion, the mounting rivet penetrates through the mounting groove and is connected to the upper sleeve assembly, and the sliding groove penetrates through the second end of the mounting portion.

[0015] In a further technical solution, the connecting portion is in a "C" or "匚" shape, a fixing groove is formed in the connecting portion, the fixing groove penetrates through the connecting portion, a fixing bolt is arranged on the connecting portion, and the fixing bolt penetrates through the fixing groove and is connected to the lower sleeve assembly.

[0016] In a further technical solution, the plurality of limiting holes are arranged in two rows and are spaced and staggered respectively.

[0017] In a further technical solution, the limiting holes are circular, elliptical or polygonal.

[0018] After adopting the above structure, the advantages of the present invention compared with the prior art are as follows: For an adjustable steering column with a collapsible structure of the present invention, when the adjusting handle is locked, the adjusting bolt is driven to rotate. The limiting member installed in the adjusting bolt rotates above the collapsible strip. Under the action of the elastic member, there is always a limiting member that enters the limiting hole of the collapsible strip to limit the movement of the collapsible strip. When the adjusting handle is loosened, the adjusting bolt rotates, the limiting member exits the limiting hole of the collapsible strip, and the steering wheel mounted on the upper sleeve assembly can be adjusted back and forth along the axis of the steering column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is a schematic structural diagram of an adjustable steering column with a collapsible structure of the present invention.

[0021] Figure 2 is Figure 1 a schematic structural diagram from another angle in

[0022] Figure 3It is a cross-sectional view of the present invention.

[0023] Figure 4 yes Figure 3 A local enlarged schematic diagram of point A in the middle.

[0024] Figure 5 It is another cross-sectional view of the present invention.

[0025] Figure 6 yes Figure 5 A local enlarged schematic diagram of point B in the middle.

[0026] Figure 7 It is a schematic diagram of the structure of the crush bar.

[0027] In the figure:

[0028] 1-Sleeve assembly;

[0029] 2-Adjust the handle;

[0030] 3-collapse strip, 31-installation part, 311-slide groove, 312-limiting groove, 313-installation rivet, 32-connection part, 321-fixing groove, 33-limiting part, 331-limiting hole;

[0031] 4-adjusting bolt, 41-limiting member, 42-elastic member, 43-installation slot, 44-fixing plate, 45-connecting hole;

[0032] 5-Mounting plate;

[0033] 6-lower sleeve assembly, 61-guide rail. DETAILED DESCRIPTION

[0034] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0035] Example

[0036] See Figure 1-7 As shown, an adjustable steering column with a collapse structure comprises an upper sleeve assembly 1, a lower sleeve assembly 6, a mounting plate 5 mounted on both sides of the lower sleeve assembly 6 and an adjusting handle 2, and also comprises a collapse bar 3 and an adjusting bolt 4, wherein the first end of the collapse bar 3 is mounted on the upper sleeve assembly 1, and the second end of the collapse bar 3 is mounted on the lower sleeve assembly 6, the first end of the adjusting bolt 4 is connected to the adjusting handle 2, and the second end of the adjusting bolt 4 passes through the mounting plate 5, a plurality of limiting holes 331 are formed on the collapse bar 3, and a limiting member 41 and an elastic member 42 are installed at least at one place on the adjusting bolt 4, the first end of the elastic member 42 is connected to the adjusting bolt 4, and the second end of the elastic member 42 is connected to the limiting member 41;

[0037] As a preferred implementation, the steering column of this embodiment is provided with two stoppers 41 and an elastic member 42 .

[0038] When the adjusting handle 2 is locked, the adjusting bolt 4 is driven to rotate, and the limiting member 41 installed in the adjusting bolt 4 rotates to the top of the crush strip 3. Under the action of the elastic member 42, one limiting member 41 enters the limiting hole 331 of the crush strip 3 to limit the movement of the crush strip 3, and the other limiting member 41 presses against the crush strip 3 under the action of the elastic member 42.

[0039] When the adjusting handle 2 is loosened, the adjusting bolt 4 rotates, the limiting member 41 exits the limiting hole 331 of the collapse strip 3, and the steering wheel installed on the upper sleeve assembly 1 can be adjusted forward and backward along the axis of the steering column.

[0040] As a preferred embodiment, the elastic member 42 is a spring. The limiting member 41 is a pin. The adjusting bolt 4 has two limiting grooves 312, and the two limiting grooves 312 are covered with a fixing plate 44. The two limiting grooves 312 are each provided with an elastic member 42 and a limiting member 41. The bottom of the limiting groove 312 is provided with a connecting hole 45. The first end of the elastic member 42 abuts against the fixing plate 44, and the second end of the elastic member 42 abuts against the first end of the limiting member 41. The second end of the limiting member 41 extends out of the connecting hole 45.

[0041] When the adjusting handle 2 is locked, the adjusting bolt 4 is driven to rotate, and the pin shaft rotates to above the crush bar 3. A spring pushes the pin shaft to move toward the crush bar 3 until the second end of the pin shaft enters the limiting hole 331 of the crush bar 3 to limit the movement of the crush bar 3. Another spring pushes the pin shaft to move toward the crush bar 3 to resist the crush bar 3.

[0042] It should be noted that the second end of the pin is truncated, which is convenient for the pin to enter and exit the limiting hole 331. The size of the limiting groove 312 is larger than the size of the upper end of the pin, the size of the connecting hole 45 is larger than the size of the lower end of the pin, and the size of the upper end of the pin is larger than the size of the connecting hole 45. Under the action of the spring, the pin always moves up and down in the limiting groove 312.

[0043] In other specific embodiments, the elastic member 42 may also be a spring sheet, and the limiting member 41 may be a screw, a bolt or a threaded rod.

[0044] Further, the crash strip 3 includes a mounting portion 31, a connecting portion 32, and a limiting portion 33. A plurality of the limiting holes 331 are formed in the limiting portion 33. The mounting portion 31 is mounted on the upper sleeve assembly 1. One end of the connecting portion 32 is connected to the limiting portion 33, and the second end of the connecting portion 32 is connected to the mounting portion 31. The lower sleeve assembly 6 is provided with a guide rail 61. A chute 311 is formed in the mounting portion 31, and the mounting portion 31 extends into the guide rail 61. When a vehicle collides, the chute 311 enables the crash strip 3 to be deformed and straightened under the action of the fixing bolt.

[0045] Further, a mounting groove 43 is formed at the first end of the mounting portion 31. The mounting portion 31 is provided with a mounting rivet 313. The mounting rivet 313 passes through the mounting groove 43 and is connected to the upper sleeve assembly 1. The chute 311 penetrates through the second end of the mounting portion 31.

[0046] The first end of the mounting portion 31 is fixed to the upper sleeve assembly 1 through the mounting rivet 313, thereby restricting the movement of the crash strip 3. When a vehicle collides, the movement of the crash strip 3 is restricted by this arrangement. Only when the mounting rivet 313 breaks, the crash strip 3 moves along the guide rail 61. Under the action of the fixing bolt, the crash strip 3 forms a crash force during the deformation and straightening process, absorbing the impact force generated during the vehicle collision, thereby reducing the harm to the driver.

[0047] Further, the connecting portion 32 is in a "C" or "匚" shape. It should be noted that one end of the track of the present invention adjacent to the connecting portion 32 corresponds to the shape of the connecting portion 32. A fixing groove 321 is formed in the connecting portion 32. The fixing groove 321 penetrates through the connecting portion 32. The connecting portion 32 is provided with a fixing bolt. The fixing bolt passes through the fixing groove 321 and is connected to the lower sleeve assembly 6.

[0048] Further, the plurality of the limiting holes 331 are arranged in two rows and are spaced and staggered respectively. The spaced and staggered limiting holes 331 enable the pin shaft to better extend into the limiting holes 331 to restrict the movement of the crash strip 3. The limiting holes 331 are circular, elliptical or polygonal. As a preferred embodiment, the limiting holes 331 in this embodiment are elliptical. The elliptical limiting holes 331 can enhance the accuracy of the pin shaft extending into the limiting holes 331.

[0049] In other specific embodiments, the limiting holes 331 can also be arranged in a single row or multiple rows and split.

[0050] The axial holding force of the steering column of the present invention > 1200N, and the crash force of the steering column is 3000 - 4500N, meeting the technical requirements of the automobile OEM.

[0051] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An adjustable steering column with a collapse structure, comprising an upper sleeve assembly, a lower sleeve assembly, mounting plates mounted on both sides of the lower sleeve assembly and an adjustment handle, characterized in that: It further includes a collapsible strip and an adjusting bolt. The first end of the collapsible strip is installed on the upper sleeve assembly, and the second end of the collapsible strip is installed on the lower sleeve assembly. The first end of the adjusting bolt is connected to the adjusting handle, and the second end of the adjusting bolt penetrates through the mounting plate. A plurality of limiting holes are formed in the collapsible strip, and at least one position on the adjusting bolt is provided with a limiting member and an elastic member. The first end of the elastic member is connected to the adjusting bolt, and the second end of the elastic member is connected to the limiting member; When the adjusting handle is loosened, the adjusting bolt rotates, and the limiting member leaves the limiting hole; When the adjusting handle is locked, at least one of the limiting members extends into the limiting hole under the action of the elastic member; Two limiting grooves are formed in the adjusting bolt, and a fixing plate covers the two limiting grooves. An elastic member and a limiting member are arranged in each of the two limiting grooves. A connecting hole is formed at the bottom of the limiting groove. The first end of the elastic member abuts against the fixing plate, the second end of the elastic member abuts against the first end of the limiting member, and the second end of the limiting member extends out of the connecting hole; The plurality of limiting holes are arranged in two rows, and the two rows of limiting holes are respectively spaced and staggered.

2. The adjustable steering column with a collapse structure according to claim 1, characterized in that: The elastic member is selected as a spring.

3. The adjustable steering column with a collapse structure according to claim 2, characterized in that: The limiting member is selected as a pin shaft.

4. The adjustable steering column with a collapse structure according to claim 1, characterized in that: The collapsible strip includes a mounting portion, a connecting portion and a limiting portion. A plurality of the limiting holes are formed in the limiting portion. The mounting portion is installed on the upper sleeve assembly. One end of the connecting portion is connected to the limiting portion, and the second end of the connecting portion is connected to the mounting portion.

5. The adjustable steering column with a collapse structure according to claim 4, characterized in that: The lower sleeve assembly is provided with a guide rail, a sliding groove is formed in the mounting portion, and the mounting portion extends into the guide rail.

6. The adjustable steering column with a collapse structure according to claim 5, characterized in that: An installation groove is formed at the first end of the mounting portion, and an installation rivet is arranged on the mounting portion. The installation rivet penetrates through the installation groove and is connected to the upper sleeve assembly, and the sliding groove penetrates through the second end of the mounting portion.

7. The adjustable steering column with a collapse structure according to claim 4, characterized in that: The connecting portion is in a "C" or "匚" shape, a fixing groove is formed in the connecting portion, the fixing groove penetrates through the connecting portion, and a fixing bolt is arranged on the connecting portion. The fixing bolt penetrates through the fixing groove and is connected to the lower sleeve assembly.

8. The adjustable steering column with a collapse structure according to claim 1, characterized in that: The limiting hole is circular, oval or polygonal.

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