Energy absorption band and vehicle steering column

Abstract

The utility model discloses an energy absorption band and a vehicle steering column. The energy absorption band comprises a band-shaped body, a first fixing part connected with one end of the band-shaped body and a second fixing part connected with the other end of the band-shaped body, the first fixing part is provided with a first fixing through hole used for inserting a fastener, and the second fixing part is provided with a second fixing through hole used for inserting the fastener. The first fixing through hole and the second fixing through hole are round holes, the diameter of the first fixing through hole is larger than that of the fastener, and the fastener is used for fixing the energy absorption band to the steering column. According to the energy absorption band, when a vehicle is collided, the first fixing part of the energy absorption band is the end part capable of relatively moving, so that adverse effects caused by movement of the energy absorption band in the crumple direction due to stress are avoided, and the structure of the energy absorption band is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field related to automobiles, in particular to an energy absorption belt and a vehicle steering column. Background Art

[0002] The steering column of a vehicle generally includes a steering column and an actuating unit. The steering column is used to connect to a steering wheel, while the actuating unit drives the steering column to move, thereby adjusting the position of the steering wheel.

[0003] In order to absorb the impact force during a collision, the prior art provides an energy absorption belt on the steering column. The energy absorption belt undergoes plastic deformation along the longitudinal direction of the steering column during a vehicle collision, and provides energy absorption through the plastic deformation of the energy absorption belt. However, the existing energy absorption belt is fixed to the steering column by a fastener, and the diameter of the fastener is consistent with the diameter of the fastening through hole of the energy absorption belt, which lacks freedom. Therefore, when the vehicle collides, the energy absorption belt will be subjected to force and will move in the direction of collapse. The energy absorption belt lacking freedom is prone to bend along its length, which may cause accidental breakage in severe cases, resulting in uneven energy absorption. Utility Model Content

[0004] Based on this, it is necessary to provide an energy absorbing belt and a vehicle steering column to address the technical problem that the energy absorbing belt in the prior art is easily bent along its length direction when the vehicle collides.

[0005] The utility model discloses an energy absorbing belt, comprising: a belt-shaped body, a first fixing portion connected to one end of the belt-shaped body, and a second fixing portion connected to the other end of the belt-shaped body, the first fixing portion is provided with a first fixing through hole for inserting a first fastener, the second fixing portion is provided with a second fixing through hole for inserting a second fastener, the first fixing through hole and the second fixing through hole are both circular holes, and the diameter of the first fixing through hole is greater than the diameter of the first fastener, the diameter of the second fixing through hole is the same as the diameter of the second fastener, and the first fastener and the second fastener are used to fix the energy absorbing belt on a steering column.

[0006] Furthermore, the surface of the energy absorption belt is coated with a coating.

[0007] Furthermore, it also includes a first transition portion and a second transition portion, the strip-shaped body is connected to the first fixed portion through the first transition portion, the strip-shaped body is connected to the second fixed portion through the second transition portion, and the first fixed portion and the second fixed portion are located in the same plane, and one or more protrusions are provided on the strip-shaped body, and the protrusions are flush with the first fixed portion and the second fixed portion.

[0008] Furthermore, the convex portion is a cold extruded convex portion.

[0009] Furthermore, a plurality of convex claws for cooperating with a fixed block fixed on the steering column are distributed on the strip-like body along a collapse direction, and the collapse direction extends from the first fixing portion to the second fixing portion along an extension direction of the strip-like body, and the convex claws include at least a first convex claw close to the second fixing portion and a second convex claw away from the second fixing portion, and a width of the first convex claw is greater than a width of the second convex claw.

[0010] Furthermore, there is a preset distance between the first convex claw and the second convex claw.

[0011] Furthermore, the width of the strip-shaped body varies along the length direction.

[0012] The utility model provides a vehicle steering column, comprising a steering column, a fixed card block, an actuating unit, a connecting piece, a fastener and the energy absorbing belt as described above, wherein the energy absorbing belt is arranged along the collapse direction of the steering column, and the collapse direction extends from the first fixing part to the second fixing part, the fastener comprises a first fastener and a second fastener, the first fastener is inserted into the first fixing through hole of the energy absorbing belt and fixedly connected to the steering column, the second fastener is inserted into the second fixing through hole of the energy absorbing belt and fixedly connected to the steering column, the fixed card block is clamped with the strip-shaped body, the connecting piece comprises a first connected part and a second part, one end of the second fastener is inserted into the second fixing through hole and fixedly connected to the steering column, and the other end is inserted into the fixed card block and fixedly connected to the first part, the first part extends toward the first fixing part, and the width of the first part close to the first fixing part is less than or equal to the width away from the first fixing part, and the second part is connected to the actuating unit.

[0013] Furthermore, the fastener also includes a third fastener, the strip-shaped body is further provided with a fastening through hole, and one end of the third fastener is inserted into the fastening through hole and fixedly connected to the steering column.

[0014] Furthermore, the fixed block is provided with a first protruding structure and a second protruding structure toward the strip-like body, the first protruding structure is engaged with the first convex claw of the strip-like body, and the second protruding structure abuts against the strip-like body and is arranged behind the second convex claw along the collapse direction.

[0015] Further, the fixed block is provided with a first protrusion facing the connecting member, the connecting member is provided with a first groove cooperating with the first protrusion, and the first protrusion is inserted into the first groove; or

[0016] The connecting member is provided with a second protrusion facing the fixed block, the fixed block is provided with a second groove matched with the second protrusion, and the second protrusion is inserted into the second groove.

[0017] Furthermore, the fastener is a pin or a rivet.

[0018] The utility model sets the first fixing through hole and the second fixing through hole to be circular holes, and the diameter of the first fixing through hole is larger than the diameter of the first fastener used to fix the energy absorbing belt on the steering column, and the diameter of the second fixing through hole is the same as the diameter of the second fastener. Therefore, when the vehicle collides with the energy absorbing belt of the utility model, the first fixing part of the energy absorbing belt is an end that can move relatively, avoiding the adverse effects caused by the movement of the energy absorbing belt in the direction of collapse, and avoiding damage to the structure of the energy absorbing belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an energy absorption belt according to an embodiment of the utility model;

[0020] Figure 2 This is a diagram showing the coordination of an energy absorbing belt and a fastener according to an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of an energy absorption belt fixed to a steering column in one embodiment of the utility model;

[0022] Figure 4 A top view of an energy absorption belt according to an embodiment of the utility model;

[0023] Figure 5 It is a front view schematic diagram of the cooperation between the convex claw and the fixed block of an energy absorbing belt in one embodiment of the utility model;

[0024] Figure 6 It is a back view schematic diagram of the cooperation between the convex claw and the fixed block of an energy absorbing belt in one embodiment of the utility model;

[0025] Figure 7 This is a structural schematic diagram of a vehicle steering column according to an embodiment of the utility model;

[0026] Figure 8 This is an overall three-dimensional diagram of a vehicle steering column according to an embodiment of the utility model;

[0027] Fig. 9 This is an overall three-dimensional view of a vehicle steering column in another direction according to an embodiment of the utility model;

[0028] Fig.10This is a schematic diagram of the cooperation between a vehicle steering column and an actuating unit according to an embodiment of the utility model;

[0029] Fig.11 It is a partial schematic diagram of the cooperation between a vehicle steering column and an actuating unit according to an embodiment of the utility model;

[0030] Fig.12 An exploded view of a vehicle steering column according to an embodiment of the present utility model;

[0031] Fig.13 This is an exploded view of a vehicle steering column in another direction according to an embodiment of the present invention.

[0032] Marking Description

[0033] 1-energy absorbing belt; 11-belt-shaped body; 12-first fixing part; 121-first fixing through hole; 122-first transition part; 13-second fixing part; 131-second fixing through hole; 132-second transition part; 14-convex part; 15-first convex claw; 151-claw notch; 16-second convex claw; 17-fastening through hole; 21-first fastener; 22-second fastener; 23-third fastener; 24-fourth fastener; 25-fifth fastener; 3-steering column; 4-fixing block; 41-first protruding structure; 42-second protruding structure; 5-connecting member; 51-first part; 52-second part; 521-notch; 6, 7-actuating unit; 61-motor; 62-screw; 63-screw nut; 8-housing tube; 9-support unit. DETAILED DESCRIPTION

[0034] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0035] like Figure 1 and Figure 2As shown, an energy absorbing belt 1 according to an embodiment of the utility model comprises: a belt-shaped body 11, a first fixing portion 12 connected to one end of the belt-shaped body 11, and a second fixing portion 13 connected to the other end of the belt-shaped body 11, the first fixing portion 12 is provided with a first fixing through hole 121 for inserting a first fastener 21, the second fixing portion 13 is provided with a second fixing through hole 131 for inserting a second fastener 22, the first fixing through hole 121 and the second fixing through hole 131 are both circular holes, and the diameter of the first fixing through hole 121 is larger than the diameter of the first fastener 21, the diameter of the second fixing through hole 131 is the same as the diameter of the second fastener 22, the first fastener 21 and the second fastener 22 are used to fix the energy absorbing belt 1 on the steering column 3.

[0036] Specifically, the energy absorption belt 1 can also be called a crush belt. The two ends of the belt-shaped body 11 are respectively connected to the first fixing part 12 and the second fixing part 13. The first fixing part 12 is provided with a first fixing through hole 121, and the second fixing part 13 is provided with a second fixing through hole 131.

[0037] Preferably, the strip body 11 is made of metal.

[0038] like Figure 3 As shown, during installation, the first fastener 21 is inserted into the first fixing through hole 121 and connected to the steering column 3, and the second fastener 22 is inserted into the second fixing through hole 131 and connected to the steering column 3, so that the energy absorbing belt 1 is fixed to the steering column 3.

[0039] like Figure 2 and Figure 3 As shown, the diameter of the first fixing through hole 121 is greater than the diameter of the first fastener 21. Therefore, the energy absorbing belt 1 has a certain degree of freedom in all directions of the first fixing portion 12. The diameter of the second fixing through hole 131 is the same as that of the second fastener 22, thereby limiting the degree of freedom of the second fixing portion 13 in all directions, so that when a vehicle collides, the energy absorbing belt can only move relatively in the first fixing portion 12, avoiding the adverse effects caused by the energy absorbing belt being subjected to force in the direction of collapse due to movement.

[0040] The utility model sets the first fixing through hole and the second fixing through hole to be circular holes, and the diameter of the first fixing through hole is larger than the diameter of the first fastener used to fix the energy absorbing belt on the steering column, and the diameter of the second fixing through hole is the same as the diameter of the second fastener. Therefore, when the vehicle collides with the energy absorbing belt of the utility model, the first fixing part of the energy absorbing belt is an end that can move relatively, avoiding the adverse effects caused by the movement of the energy absorbing belt in the direction of collapse, and avoiding damage to the structure of the energy absorbing belt.

[0041] like Figures 1 to 6 As shown, in another embodiment of the utility model, an energy absorbing belt 1 comprises: a belt-shaped body 11, a first fixing portion 12 connected to one end of the belt-shaped body 11, a second fixing portion 13 connected to the other end of the belt-shaped body 11, a first transition portion 122 and a second transition portion 132, the first fixing portion 12 is provided with a first fixing through hole 121 for inserting a fastener 21, the second fixing portion 13 is provided with a second fixing through hole 131 for inserting a fastener 22, the first fixing through hole 121 and the second fixing through hole 131 are both circular holes, and the diameter of the first fixing through hole 121 is greater than the diameter of the first fastener 21, the diameter of the second fixing through hole 131 is the same as the diameter of the second fastener 22, the first fastener 21 and the second fastener 22 are used to fix the energy absorbing belt 1 on the steering column 3, the surface of the energy absorbing belt 1 is coated, and the width of the belt-shaped body 11 varies along the length direction;

[0042] The strip-shaped body 11 is connected to the first fixing portion 12 through the first transition portion 122, and the strip-shaped body 11 is connected to the second fixing portion 13 through the second transition portion 132, and the first fixing portion 12 and the second fixing portion 13 are located in the same plane, and one or more convex portions 14 are provided on the strip-shaped body 11, and the convex portions 14 are flush with the first fixing portion 12 and the second fixing portion 13, and the convex portions 14 are cold extruded convex portions;

[0043] A plurality of convex claws for cooperating with the fixed block 4 are distributed along the collapse direction on the strip-shaped body 11. The fixed block 4 is fixedly connected to the connecting piece 5 and is fixed to the steering column 3 by cooperating with the convex claws. The collapse direction extends from the first fixing portion 12 to the second fixing portion 13 along the extension direction of the strip-shaped body 11. The convex claws at least include a first convex claw 15 close to the second fixing portion 13 and a second convex claw 16 away from the second fixing portion 13. The width of the first convex claw 15 is greater than that of the second convex claw 16. There is a preset distance between the first convex claw 15 and the second convex claw 16.

[0044] Specifically, during installation, the first fixing portion 12 and the second fixing portion 13 need to be connected to the steering column 3, so the first fixing portion 12 and the second fixing portion 13 are located in the same plane. Due to installation requirements, the strip body 11 is generally not close to the steering column 3, but has a certain gap between it and the steering column 3. Therefore, the strip body 11 is bent through the first transition portion 122 to connect with the first fixing portion 12, and the strip body 11 is bent through the second transition portion 132 to connect with the second fixing portion 13, so that the strip body 11 and the first fixing portion 12 and the second fixing portion 13 are in different planes. In order to increase stability, therefore, a plurality of convex portions 14 are fixedly connected to the strip body 11, and the convex portions 14 are flush with the first fixing portion 12 and the second fixing portion 13, so that during installation, the convex portions 14 can contact the steering column 3 to improve stability. Among them, the convex portions 14 can be convex points or long strip convex blocks.

[0045] The convex portion 14 is formed by cold extrusion. Cold extrusion is a metal plastic deformation process. The obtained cold extrusion parts do not need cutting process, which produces less chips and metal waste, thus shortening the production cycle and reducing the consumption of raw materials.

[0046] At the same time, the entire surface of the energy absorbing belt 1 is coated. The width of the belt-shaped body 11 varies along the length direction to meet different customer needs. Specifically, the belt-shaped body 11 of the energy absorbing belt 1 is reduced in width from the first fixing portion 12 to the second fixing portion 13 in the length direction, or the belt-shaped body 11 of the energy absorbing belt 1 is provided with different width size areas in the length direction from the first fixing portion 12 to the second fixing portion 13.

[0047] The coating applied to the entire surface of the energy absorbing belt can be a friction-reducing lubricating coating, for example, the BECHEM / Berucoat AF series friction-reducing coating, specifically selected from BERUCOAT AF732 friction-reducing lubricating coating. The energy absorbing belt and the fixed block are both made of metal. During the collapse process, the fixed block will squeeze the energy absorbing belt and move relative to the energy absorbing belt, thereby releasing a large amount of heat energy. If the surface of the energy absorbing belt is not coated with the above coating, the high-temperature local environment formed by the large amount of heat energy released during the collapse process will cause metal adhesion between the energy absorbing belt and the fixed block, causing the movement between the two to become stuck, thereby affecting the collapse performance. Therefore, applying the above coating can ensure smooth relative movement between the energy absorbing belt and the fixed block, ensuring that the pipe column can be collapsed smoothly when the vehicle encounters an external impact. The Berucoat AF series includes a variety of extremely durable friction-reducing lubricating coatings that can reduce friction and provide excellent anti-corrosion properties, and is most suitable for application on metal surfaces.

[0048] The steering column 3 is fixedly mounted with a fixed block 4, and the strip body 11 is provided with a plurality of convex claws for cooperating with the fixed block 4 distributed along the collapse direction. The fixed block 4 is fixedly connected to the connecting member 5 and fixed to the steering column 3 by cooperating with the convex claws. Figure 5 and Figure 6 As shown, the fixed block 4 has a first protruding structure 41 and a second protruding structure 42, such as a convex block, and a claw notch 151 that matches the first protruding structure 41 is provided on the first convex claw 15. The first protruding structure 41 of the fixed block 4 protrudes toward the strip body 11, thereby being clamped into the claw notch 151 of the first convex claw 15. The second protruding structure 42 abuts against the strip body 11 and is arranged behind the second convex claw 16 along the collapse direction. When the car collides and the steering column 3 is collapsing due to the collision, the convex claw of the strip body 11 restricted by the fixed block 4 leaves the initial clamping position, and the fixed block 4 moves relative to the strip body 11 and squeezes the strip body in the width direction of the strip body, so that the strip body 11 is plastically deformed, thereby absorbing energy. At the same time, the convex claw of the strip body 11 is separated from the initial clamping position that matches the fixed block 4 to provide a peak collapse force, thereby absorbing the energy at the initial stage of collapse. Specifically, first, the first protruding structure 41 of the fixed clamping block 4 leaves the claw notch 151 and squeezes the raised edge of the claw notch 151, thereby providing a portion of the peak crushing force in the first instantaneous squeezing state, and then the second protruding structure 42 moves to the second convex claw 16 and squeezes the second convex claw 16, thereby providing another portion of the peak crushing force in the second instantaneous squeezing state. Although the first instantaneous squeezing state and the second instantaneous squeezing state do have a temporal sequence, at the time point when the steering column of the car is collided and collapses, the first instantaneous squeezing state and the second instantaneous squeezing state occur almost simultaneously and provide a portion of the peak crushing force to form the overall peak crushing force.

[0049] The convex claw includes at least a first convex claw 15 close to the second fixing portion 13 and a second convex claw 16 far from the second fixing portion 13, and the width of the first convex claw 15 is greater than the width of the second convex claw 16. Figure 5 As shown, due to the collapse direction ( Figure 5 and Figure 6 ), extending from the first fixing portion 12 to the second fixing portion 13 along the extension direction of the strip-like body 11. Therefore, in the early stage of collapse, the first convex claw 15 and the second convex claw 16 will provide the peak collapse force, while in the middle and late stages of collapse, the first convex claw 15 and the second convex claw 16 will no longer provide collapse energy absorption. Instead, the fixed block 4 squeezes the strip-like body in the width direction of the strip-like body 11 to provide collapse energy absorption, thereby enabling smooth collapse to be achieved in the middle and late stages of collapse.

[0050] At the same time, there is a preset distance between the first convex claw 15 and the second convex claw 16, so that there is no overlap between the first convex claw 15 and the second convex claw 16, so the maximum value of the crushing energy absorption can be adjusted by adjusting the width of the first convex claw 15 and / or the second convex claw 16.

[0051] In this embodiment, a convex portion is provided on the side of the strip body relative to the steering column to improve stability. At the same time, in this embodiment, a plurality of convex claws are provided to cooperate with the fixed clamping block, and the width of the convex claw located at the rear of the collapse direction is greater than the width of the convex claw located at the front of the collapse direction. In addition, since the two convex claws do not overlap, the maximum value of the collapse energy absorption can be adjusted by adjusting the width of the first convex claw and / or the second convex claw.

[0052] like Figures 7 to 13 The utility model is shown in an embodiment of a vehicle steering column, comprising a steering column 3, a fixed block 4, an actuating unit 6, a connecting member 5, a fastener, and the energy absorbing belt 1 as described above, wherein the energy absorbing belt 1 is arranged along the collapse direction of the steering column 3, and the collapse direction extends from the first fixing portion 12 to the second fixing portion 13, and the fastener comprises a first fastener 21 and a second fastener 22, wherein the first fastener 21 is inserted into the first fixing through hole 121 of the energy absorbing belt 1 and is fixedly connected to the steering column 3, and the second fastener 22 is inserted into the second through hole 121 of the energy absorbing belt 1 The fixing through hole 131 is fixedly connected to the steering column 3, the fixing block 4 is clamped with the strip body 11, the connecting member 5 includes a first part 51 and a second part 52, one end of the second fastener 22 is inserted into the second fixing through hole 131 and fixedly connected to the steering column 3, the fixing block 4 is fixedly connected to the first part 51, the first part 51 extends toward the first fixing portion 12, and the width of the first part 51 close to the first fixing portion 12 is less than or equal to the width away from the first fixing portion 12, and the second part 52 is connected to the actuating unit 6.

[0053] Specifically, the vehicle steering column further comprises another actuating unit 7, a housing tube 8 covering the steering column 3, and a supporting unit 9. The actuating unit 6 comprises a motor 61, a lead screw 62, and a lead screw nut 63. The second part 52 is connected to the lead screw nut 63.

[0054] The first fastener 21 is inserted into the first fixing through hole 121 and connected to the steering column 3, one end of the second fastener 22 is inserted into the second fixing through hole 131 and fixedly connected to the steering column 3, and the fixing block 4 is clamped with the strip body 11, and the fixing block 4 is fixedly connected to the first part 51 through the fourth fastener 24, so that the energy absorbing belt 1 is fixed on the steering column.

[0055] In one embodiment, the fastener is a bolt, a pin or a rivet.

[0056] like Figure 2 and Figure 3 As shown, the diameter of the first fixing through hole 121 is larger than the diameter of the first fastener 21, and the diameter of the second fixing through hole 131 is the same as the diameter of the second fastener 22. Therefore, the energy absorbing belt 1 has a certain degree of freedom in all directions of the first fixing portion 12.

[0057] The second part 52 of the connecting member 5 is connected to the actuating unit. The movement of the steering column 3 is driven by the actuating unit 6 and the actuating unit 7. The actuating unit generally includes a motor, a lead screw and a lead screw nut. The second part 52 can be provided with a notch 521 to clamp the lead screw nut 63 of the actuating unit 6. When the length needs to be adjusted, the motor drives the lead screw to rotate, thereby driving the lead screw nut to move, and driving the steering column 3 to move through the connecting member 5.

[0058] In one embodiment, the fastener further comprises a third fastener 23 , the strip body 11 further comprises a fastening through hole 17 , one end of the third fastener 23 is inserted into the fastening through hole 17 and fixedly connected to the steering column 3 .

[0059] In this embodiment, the connecting parts are fixed by a plurality of fasteners, and the fixing connection methods of the fasteners include but are not limited to bolt connection, pin connection or rivet connection.

[0060] There are two ways to connect the connecting piece 5 to the fixed block 4:

[0061] The first connection mode is a fully fixed connection, wherein the fixing block 4 is fixedly connected to the first part 51 by a fourth fastener 24 and a fifth fastener 25 .

[0062] Another connection method is plug-in + fixed connection.

[0063] In one embodiment:

[0064] The fixing block 4 is provided with a first protrusion facing the connecting member 5, the connecting member 5 is provided with a first groove matching with the first protrusion, and the first protrusion is inserted into the first groove; or

[0065] The connecting member 5 is provided with a second protrusion facing the fixing block 4 , the fixing block 4 is provided with a second groove matched with the second protrusion, and the second protrusion is inserted into the second groove.

[0066] In one aspect of this embodiment, the fixing block 4 and the connecting member 5 are fixedly connected by the fourth fastener 24, including but not limited to bolt connection, pin connection or rivet connection. On the other hand, the fixing block 4 and the connecting member 5 are plugged in by the cooperation of the protrusion and the groove.

[0067] In one embodiment, the fixed block 4 is provided with a first protruding structure 41 and a second protruding structure 42 facing the strip-like body 11, the first protruding structure 41 is engaged with the first convex claw 15 of the strip-like body 11, and the second protruding structure 42 abuts against the strip-like body 11 and is arranged behind the second convex claw 16 along the collapse direction.

[0068] like Figure 5 and Figure 6 As shown, the fixed block 4 has a first protruding structure 41 and a second protruding structure 42, such as a convex block, and a claw notch 151 that matches the first protruding structure 41 is provided on the first convex claw 15. The first protruding structure 41 of the fixed block 4 protrudes toward the strip body 11, thereby being clamped into the claw notch 151 of the first convex claw 15. The second protruding structure 42 abuts against the strip body 11 and is arranged behind the second convex claw 16 along the collapse direction. When the car collides and the steering column 3 is collapsing due to the collision, the convex claw of the strip body 11 restricted by the fixed block 4 leaves the initial clamping position, and the fixed block 4 moves relative to the strip body 11 and squeezes the strip body in the width direction of the strip body, so that the strip body 11 is plastically deformed, thereby absorbing energy. At the same time, the convex claw of the strip body 11 is separated from the initial clamping position that matches the fixed block 4 to provide a peak collapse force, thereby absorbing the energy at the initial stage of collapse.

[0069] The first part 51 of the connector 5 extends toward the first fixed part 12, and the width of the first part 51 near the first fixed part 12 is less than or equal to the width away from the first fixed part 12. Among them, the first part 51 is generally located above the second part 52, so the connector 5 as a whole is a gun-shaped connector. Since the first part 51 extends toward the first fixed part 12, that is, extends in the opposite direction of the collapse direction, the length of the first part is increased away from the collapse direction, which can avoid the connector 5 from flipping during collapse, thereby preventing the energy absorption belt from deviating from the collapse direction when absorbing collision energy. At the same time, the width of the first part 51 near the first fixed part 12 is less than the width away from the first fixed part 12, and the first part 51 forms a triangular shape. Compared with the first part 51, the width of the first part 51 near the first fixed part 12 is equal to the width away from the first fixed part 12, which reduces the overall weight.

[0070] The utility model sets the first fixed through hole and the second fixed through hole to be circular holes, and the diameter of the first fixed through hole is larger than the diameter of the first fastener used to fix the energy absorbing belt on the steering column, and the diameter of the second fixed through hole is the same as the diameter of the second fastener. Therefore, for the energy absorbing belt of the utility model, when a vehicle collides, the first fixed portion of the energy absorbing belt is an end portion that can move relatively, thereby avoiding the adverse effects of the energy absorbing belt being subjected to force in the direction of collapse due to movement, and avoiding damage to the structure of the energy absorbing belt. At the same time, this embodiment extends the length of the connecting member along the steering column in the direction of collapse, and the first part of the connecting member extends toward the first fixed portion, which can avoid the connecting member from flipping over during collapse, and by adjusting the width during extension, the overall weight of the connecting member is reduced.

[0071] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An energy absorption belt (1), characterized in that: include: A strip-shaped body (11), a first fixing portion (12) connected to one end of the strip-shaped body (11), and a second fixing portion (13) connected to the other end of the strip-shaped body (11); the first fixing portion (12) is provided with a first fixing through hole (121) for inserting a first fastener (21); the second fixing portion (13) is provided with a second fixing through hole (131) for inserting a second fastener (22); the first fixing through hole (121) and the second fixing through hole (131) are both circular holes; the diameter of the first fixing through hole (121) is larger than the diameter of the first fastener (21); the diameter of the second fixing through hole (131) is the same as the diameter of the second fastener (22); the first fastener (21) and the second fastener (22) are used to fix the energy absorbing strip (1) on a steering column (3).

2. The energy absorption belt (1) according to claim 1, characterized in that The surface of the energy absorption belt (1) is coated with a coating.

3. The energy absorption belt (1) according to claim 1, characterized in that The strip-shaped body (11) further comprises a first transition portion (122) and a second transition portion (132); the strip-shaped body (11) is connected to the first fixing portion (12) via the first transition portion (122); the strip-shaped body (11) is connected to the second fixing portion (13) via the second transition portion (132); the first fixing portion (12) and the second fixing portion (13) are located in the same plane; one or more protrusions (14) are provided on the strip-shaped body (11); the protrusions (14) are flush with the first fixing portion (12) and the second fixing portion (13).

4. The energy absorption belt (1) according to claim 3, characterized in that The convex portion (14) is a cold extruded convex portion.

5. The energy absorption belt (1) according to claim 1, characterized in that A plurality of convex claws for cooperating with a fixed block (4) fixed on the steering column (3) are distributed on the strip-shaped body (11) along a collapse direction, wherein the collapse direction extends from the first fixing portion (12) to the second fixing portion (13) along an extension direction of the strip-shaped body (11), and the convex claws at least include a first convex claw (15) close to the second fixing portion (13) and a second convex claw (16) away from the second fixing portion (13), and the width of the first convex claw (15) is greater than the width of the second convex claw (16).

6. The energy absorption belt (1) according to claim 5, characterized in that There is a preset distance between the first convex claw (15) and the second convex claw (16).

7. The energy absorption belt (1) according to any one of claims 1 to 6, characterized in that: The width of the strip-shaped body (11) varies along the length direction.

8. A vehicle steering column, characterized in that: The invention comprises a steering column (3), a fixing block (4), an actuating unit (6), a connecting piece (5), a fastener and an energy absorbing belt (1) as claimed in any one of claims 1 to 7, wherein the energy absorbing belt (1) is arranged along the collapse direction of the steering column (3), and the collapse direction extends from the first fixing portion (12) to the second fixing portion (13), and the fastener comprises a first fastener (21) and a second fastener (22), and the first fastener (21) is inserted into the first fixing through hole (121) of the energy absorbing belt (1) and is fixedly connected to the steering column (3). The second fastener (22) is inserted into the second fixing through hole (131) of the energy absorbing belt (1) and fixedly connected to the steering column (3); the fixing block (4) is clamped with the strip body (11); the connecting member (5) comprises a first connected part (51) and a second part (52); the first part (51) extends toward the first fixing part (12); and the width of the first part (51) close to the first fixing part (12) is less than or equal to the width away from the first fixing part (12); and the second part (52) is connected to the actuating unit (6).

9. The vehicle steering column according to claim 8, characterized in that: The fastener also includes a third fastener (23), the strip-shaped body (11) is also provided with a fastening through hole (17), one end of the third fastener (23) is inserted into the fastening through hole (17) and fixedly connected to the steering column (3).

10. The vehicle steering column according to claim 8, characterized in that: The fixed block (4) is provided with a first protruding structure (41) and a second protruding structure (42) facing the strip-shaped body (11); the first protruding structure (41) is engaged with a first convex claw (15) of the strip-shaped body (11); the second protruding structure (42) abuts against the strip-shaped body (11) and is arranged behind the second convex claw (16) of the strip-shaped body (11) along the collapse direction.

11. The vehicle steering column according to claim 8, characterized in that: The fixed block (4) is provided with a first protrusion facing the connecting member (5), the connecting member (5) is provided with a first groove cooperating with the first protrusion, and the first protrusion is inserted into the first groove; or The connecting member (5) is provided with a second protrusion facing the fixed clamping block (4), the fixed clamping block (4) is provided with a second groove cooperating with the second protrusion, and the second protrusion is inserted into the second groove.

12. A vehicle steering column according to any one of claims 8 to 11, characterized in that: The fastener is a pin or a rivet.

Images