Door cross member

Abstract

This invention provides a door crossbeam that, when deformed by a side impact, shifts the non-fixed portion of the door crossbeam corresponding to the knee position of a passenger inside the vehicle towards the inward side, thereby mitigating impact on the thigh area, preventing lower limb injuries to passengers, and improving safety. The door crossbeam includes: a crossbeam body extending along the longitudinal direction of the vehicle; and an inner member disposed on the inner side of the crossbeam body. The inner member has: a fixed portion fixed to the crossbeam body; and a non-fixed portion not fixed to the crossbeam body and positioned further forward in the longitudinal direction than the fixed portion.

Description

Technical Field

[0001] This invention relates to a door crossbeam, specifically a door crossbeam for installation in the door of a vehicle. Background Technology

[0002] In recent years, all countries have strengthened the construction of safe cities and human settlements to enhance their capacity for inclusive and sustainable urban development, sustainable human settlement planning, and management. Therefore, all countries need to strengthen the provision of safe, affordable, accessible, and sustainable transport systems for all, improve road safety, and especially expand public transport, with particular attention to the needs of vulnerable groups, women, children, people with disabilities, and the elderly. In the transport sector, there is an urgent need to address environmental issues and develop technologies that can improve the convenience and safety of public transport.

[0003] In the existing vehicle manufacturing industry, there are disclosed structures for vehicle doors in which a door crossbeam is provided between the outer panel on the outer side of the door and the inner panel on the inner side of the door, and the door crossbeam is reinforced against impacts acting on the door from the side.

[0004] For example, Patent Document 1 discloses a door reinforcement structure that reduces door panel deformation when the vehicle is subjected to a side impact. In Patent Document 1, when viewed in the vehicle width direction, the door crossbeam (as described in Patent Document 1) Figure 3 The front end of 74) is set to be aligned with the front window frame (in Patent Document 1). Figure 3 (50) intersects with and is related to the anterior pillar (in Patent Document 1) Figure 3 7) does not intersect, and the rear end of the door crossbeam is set to be connected to the center pillar (in Patent Document 1). Figure 3 9) Crossing. Patent document 1 discloses a technology in which, by setting the door crossbeam, when the vehicle is hit from the side, the rear end of the door crossbeam will move towards the front window frame with the position where it abuts against the center pillar as the fulcrum.

[0005] [Existing Technical Documents]

[0006] [Patent Literature]

[0007] [Patent Document 1] Japanese Patent Publication No. 4188141 Summary of the Invention

[0008] [The problem the invention aims to solve]

[0009] Accordingly, in the prior art (such as Patent Document 1 mentioned above), the door crossbeam is configured such that its front end intersects the front window frame but not the front pillar. However, with this configuration, when the vehicle is subjected to a side impact, the deformation of the door crossbeam is such that the front part of the crossbeam body moves towards the front window frame. Therefore, the prior art has the following problem: when the door crossbeam deforms under impact, the part that moves inside the vehicle is limited to the position of the front window frame, thus the deformation position of the door crossbeam is limited by the position of the front window frame.

[0010] The present invention is made in view of the above aspects, and provides a door crossbeam in which, when the door crossbeam is deformed by a side impact, the non-fixed part of the door crossbeam corresponding to the knee position of the passenger in the vehicle moves toward the inward side of the vehicle, thereby reducing the impact on the thigh area, avoiding injury to the lower limbs of the passenger in the vehicle, and improving safety.

[0011] [Technical means to solve the problem]

[0012] To achieve the aforementioned objective, the present invention provides a door crossbeam for installation in a vehicle door. The door crossbeam includes: a crossbeam body extending along the longitudinal direction of the vehicle; and an inner member disposed on the inner side of the crossbeam body. The inner member has: a fixing portion fixed to the crossbeam body; and a non-fixed portion not fixed to the crossbeam body and disposed at a position further forward in the longitudinal direction than the fixing portion.

[0013] Thus, when the door beam deforms due to a side impact, as the fixed part deforms along the beam body, the non-fixed part will move away from the beam body and towards the inside of the vehicle, thereby reducing the impact on the thigh area, preventing injury to the lower limbs of passengers and improving safety.

[0014] In one embodiment of the present invention, the non-fixed portion is configured to be continuous with the fixed portion.

[0015] Thus, when deformed by impact, the fixed part will conform to and continuously deform with the crossbeam body, while the non-fixed part, which is continuous with the fixed part, will indeed separate from the crossbeam body and move towards the inside of the vehicle.

[0016] In one embodiment of the present invention, the door crossbeam further includes: an outer member disposed on the outer side of the crossbeam body, wherein the crossbeam body is located between the inner member and the outer member in the width direction of the vehicle; the inner member is provided with a mating surface extending along the front-rear direction for engaging with the outer member, and the non-fixed portion is configured to be continuous with the mating surface.

[0017] In this way, when deformed by impact force, the non-fixed part can reliably separate from the crossbeam body and displace toward the inside of the vehicle.

[0018] In one embodiment of the invention, the inner member is formed with a recess for receiving a portion of the beam body and a flange portion disposed above and below the recess, and the mating surface and the non-fixed portion are disposed on the flange portion.

[0019] In this way, when deformed by impact force, the non-fixed part can reliably separate from the crossbeam body and displace toward the inside of the vehicle.

[0020] In one embodiment of the invention, the non-fixed portion is configured to span across the flange portion and the recess portion.

[0021] In this way, when the non-fixed part is impacted and pushes the corresponding specific part of the passenger (such as the knee) more firmly into the vehicle, the deformation of the non-fixed part can be suppressed.

[0022] In one embodiment of the present invention, the door has an inner door panel located inside the crossbeam body, the inner door panel having an opening, and the non-fixed portion being positioned overlapping the opening when viewed in the vehicle width direction.

[0023] In this way, when the door beam deforms due to an impact, the non-fixed parts can more reliably push the passenger's knees inward.

[0024] In one embodiment of the present invention, the crossbeam body has a front intersection point that intersects the front pillar of the vehicle in the vehicle width direction and a rear intersection point that intersects the middle pillar of the vehicle in the vehicle width direction, and the non-fixed part is located at a position further forward than the middle position of the front intersection point and the rear intersection point.

[0025] This allows the non-fixed parts to more reliably push the passenger's knees towards the inside of the vehicle.

[0026] In one embodiment of the present invention, the crossbeam body has an innermost point located in the vehicle width direction when it bulges out to the side due to deformation, and the non-fixed part is located at a position further forward than the innermost point.

[0027] This allows the non-fixed parts to more reliably push the passenger's knees towards the inside of the vehicle.

[0028] [The effects of the invention]

[0029] Based on the above, the door crossbeam of the present invention has a non-fixed part located at the position corresponding to the passenger's knee. When the door crossbeam deforms due to a side impact, as the fixed part deforms along the crossbeam body, the non-fixed part will move away from the crossbeam body and towards the inside of the vehicle, thus displacing itself. Since the non-fixed part is located at the position corresponding to the passenger's knee on the door crossbeam, it can, for example, push the passenger's knee towards the inside of the vehicle (through the door trim panel, etc.), thereby reducing the impact on the thigh area, preventing injury to the passenger's lower limbs, and improving safety.

[0030] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0031] Figure 1 This is a schematic diagram illustrating the arrangement of a door crossbeam according to one embodiment of the present invention in a door.

[0032] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0033] Figure 3 It is a schematic illustration. Figure 1 The door crossbeam according to one embodiment of the present invention.

[0034] Figure 4 Observing from different perspectives Figure 2 A schematic diagram of the car door crossbeam.

[0035] Figure 5 This is a schematic diagram used to illustrate the deformation of a car door beam when it is subjected to an impact force and deformed, viewed from above.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100: Door crossbeam

[0038] 110: Crossbeam body

[0039] 120: Inner component

[0040] 122: Fixing part

[0041] 124: Non-fixed part

[0042] 120C: Joint surface

[0043] 120F: Flange portion

[0044] 120R: concave part

[0045] 130: Outer component

[0046] D: Car door

[0047] DP: Door Inner Panel

[0048] H: Opening

[0049] P1: Front Crossing Point

[0050] P2: Rear Crossing Point

[0051] P3: Middle position Detailed Implementation

[0052] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiments described below, when referring to numbers, quantities, etc., unless specifically stated otherwise, the scope of the present invention is not limited to those numbers, quantities, etc. Furthermore, in the embodiments described below, each constituent element is not necessarily essential to the present invention unless specifically stated otherwise. Additionally, when multiple embodiments exist, unless specifically stated otherwise, the characteristic parts that can be appropriately combined in each embodiment are predetermined from the outset.

[0053] Referring to the accompanying drawings, a door crossbeam according to various embodiments of the present invention will be described. In each drawing, X represents the forward direction in the vehicle's longitudinal direction, Z represents the upward direction in the vehicle's vertical direction, and Y represents the inward direction in the vehicle's width direction. Furthermore, the directions and positions described in this specification are defined with the front of the vehicle facing forward. Hereinafter, preferred embodiments will be listed, and the door crossbeam for installation in a vehicle door according to the present invention will be described in detail with reference to the accompanying drawings.

[0054] Figure 1 This is a schematic diagram illustrating the arrangement of a door crossbeam according to one embodiment of the present invention in a door. Figure 1 The middle section shows a partial view of the door beam located on the door, while other components of the door are omitted. Figure 1 The middle image is a schematic diagram showing the door beam viewed from the outside of the vehicle. Figure 2 yes Figure 1 A partially enlarged image. Please refer to it. Figure 1 and Figure 2 The door crossbeam 1 of the present invention can be installed in the door of a vehicle. Furthermore, this embodiment uses the left-side (front left or rear left) door of the vehicle as an example. However, the door crossbeam of the present invention can also be installed in any door of the vehicle, and the present invention is not limited thereto.

[0055] Figure 3 It is a schematic illustration. Figure 1 The present invention relates to a door crossbeam according to one embodiment, and for ease of explanation... Figure 3The middle section is drawn with the components not yet assembled. Figure 4 Observing from different perspectives Figure 2 A schematic diagram of the car door crossbeam, and Figure 4 The middle image is a schematic diagram showing the door beam viewed from the inside of the vehicle.

[0056] Please refer to Figures 1 to 4 The door crossbeam 100, installed in door D, includes a crossbeam body 110 and an inner member 120. The crossbeam body 110 extends along the longitudinal direction of the vehicle. The inner member 120 is located on the inner side of the crossbeam body 110. The inner member 120 consists of a fixed part 122 and a non-fixed part 124. The fixed part 122 is used to fix the crossbeam body 110, and the non-fixed part 124 is not fixed to the crossbeam body 110, and the non-fixed part 124 is positioned further forward in the longitudinal direction than the fixed part 122. Figures 1 to 3 As shown, the two ends of the door crossbeam 100 can be fixed to the door by means of a frame or other components, such that the crossbeam body 110 extends in the front-rear direction.

[0057] Furthermore, a fixing part 122 and a non-fixed part 124 are provided between the two ends of the crossbeam body 110, and the non-fixed part 124 is positioned further forward in the front-rear direction than the fixing part 122. Therefore, as Figure 2 As shown, the fixed part 122 of the assembled door crossbeam 100 is fixed to the crossbeam body 110, but the non-fixed part 124 is not fixed to the crossbeam body 110. In this embodiment, the configuration of the fixed part 122 is not limited to whether it is directly engaged with the crossbeam body 110, as long as the fixed part 122 and the crossbeam body 110 can be fixed to each other, the present invention is not limited to this. For example, in this embodiment, the inner member 120, which has the fixed part 122 and the non-fixed part 124, is indirectly fixed to the crossbeam body 110 by engaging with the outer member 130.

[0058] Thus, by configuring the door crossbeam 100 to include a fixed portion 122 and a non-fixed portion 124, and positioning the non-fixed portion 124 further forward than the fixed portion 122, it is positioned to correspond to the position of the passenger's knee. In other words, the non-fixed portion 124 and the knee position of the passenger in the seated state overlap in the vehicle width direction.

[0059] Figure 5 This is a diagram illustrating the deformation of a car door crossbeam when subjected to an impact force, viewed from above. Please refer to it. Figure 5 When subjected to impact, the door crossbeam 100 will deform due to the impact force received from the side, resulting in displacement of the door crossbeam 100. For example, as... Figure 5As shown, the crossbeam body 110 has a front intersection point P1 that intersects the front pillar of the vehicle in the vehicle width direction and a rear intersection point P2 that intersects the center pillar of the vehicle in the vehicle width direction. The non-fixed part 124 is located further forward than the midpoint P3 between the front intersection point P1 and the rear intersection point P2. The fixed part 122 is located behind the midpoint P3. When the door crossbeam 100 deforms due to an impact force, the position where the door crossbeam 100 experiences the maximum displacement when viewed from above is called the inflection point. The inflection point is usually located at the midpoint P3, approximately between the two ends of the crossbeam body 100 (front intersection point P1 and rear intersection point P2). By positioning the non-fixed part 124 further forward than this midpoint P3, the non-fixed part 124 can more reliably push the passenger's knee towards the inside of the vehicle.

[0060] In other words, such as Figure 5 As shown, when deformed by an impact force, the position where the door crossbeam 100 experiences the maximum displacement can also be called the innermost point. The innermost point is located at approximately the midpoint P3 between the two ends of the crossbeam body 100 (the front intersection point P1 and the rear intersection point P2). The crossbeam body 110 has an innermost point located in the vehicle width direction when it bulges out due to deformation, and the non-fixed part 124 is positioned further forward than the innermost point. The fixed part 122 is positioned behind the innermost point. By positioning the non-fixed part 124 further forward than the innermost point in the vehicle width direction when it bulges out due to deformation, the non-fixed part 124 can more reliably push the passenger's knee towards the inside of the vehicle.

[0061] When the door beam 100 is deformed by a side impact, as the fixed part 122 deforms along the beam body 110, the non-fixed part 124 will move away from the beam body 110 and move towards the inside of the vehicle, thereby reducing the impact on the passenger's thigh area, preventing injury to the passenger's lower limbs, and thus improving safety.

[0062] like Figures 1 to 3 As shown, the non-fixed portion 124 is configured to be continuous with the fixed portion 122. For example, the inner member 120 is constructed from the same sheet metal, forming a continuous non-fixed portion 124 and fixed portion 122. Thus, by configuring the non-fixed portion 124 to be continuous with the fixed portion 122, and since the fixed portion 122 and the beam body 110 are mutually fixed, they can be considered as a single unit. Please refer to... Figure 5When the vehicle is subjected to an impact force from the side and deforms, the fixed part 122 will conform to and continuously deform with the crossbeam body 110. At this time, the non-fixed part 124, which is continuously formed with the fixed part 122, can reliably separate from the crossbeam body 110 and move towards the inside of the vehicle.

[0063] In addition, in this embodiment, such as Figure 3 and Figure 4 As shown, the door D has a vehicle door inner panel DP located on the inner side of the crossbeam body 110. The door inner panel DP has an opening H. When viewed in the vehicle width direction, the non-fixed part 124 is provided at a position that overlaps with the opening H.

[0064] In this way, the non-fixed part 124 is positioned to overlap with the opening H of the inner door panel DP. When the door beam 100 deforms due to an impact, the non-fixed part 124 can more reliably push the passenger's knee towards the inside of the vehicle. Since a door trim panel is usually provided on the inside of the inner door panel DP, the non-fixed part 124 does not directly abut against the passenger's knee; rather, the non-fixed part 124 pushes the passenger's knee through the door trim panel.

[0065] In addition, such as Figure 3 and Figure 4 As shown, the door crossbeam 100 also includes an outer member 130 disposed on the outer side of the crossbeam body 110. In the width direction of the vehicle, the crossbeam body 100 is located between the inner member 120 and the outer member 130. The inner member 120 is provided with a mating surface 120C extending in the front-rear direction for engaging with the outer member 130, and the non-fixed portion 124 is configured to be continuous with the mating surface 120C. Figure 2 In the case where the door crossbeam 100 is arranged in door D, a portion of the crossbeam body 110 is accommodated between the outer member 130 and the inner member 120. When viewed from the vehicle width direction, in the vertical direction, the inner member 120 and the outer member 130 are fixed to each other above and below the crossbeam body 110 for the fixed and unfixed parts of the crossbeam body 110. The fixed part forms the fixed part 124, while the unfixed part (the front end of the inner member 120) forms the unfixed part 124. It can be seen that the unfixed part 124 is located further forward of the fixed part 122.

[0066] By providing a mating surface 120C on the inner member 120 that engages with the outer member 130, and by having the non-fixed part 124 continuous with the mating surface 120C, when the vehicle is subjected to an impact force and deforms, the non-fixed part 124 can reliably separate from the crossbeam body 110 and displace toward the inside of the vehicle.

[0067] Furthermore, in this embodiment, such as Figure 3 As shown, the inner member 120 has a recess 120R for receiving a portion of the beam body 110 and a flange portion 120F disposed above and below the recess 120R, and a mating surface 120C and a non-fixed portion 124 are disposed on the flange portion 120F. In this embodiment, the flange portion 120F is disposed above and below the recess 120R as an example.

[0068] Thus, by providing the mating surface 120C and the non-fixed portion 124 on the same flange portion 120F (e.g., as... Figures 1 to 3 As shown, the non-fixed portion 124 and the mating surface 120C are provided in the flange portion 120F located above the recess 120R. Figure 5 As shown, when the door beam 100 is deformed by an impact force, the non-fixed part 124 can reliably separate from the beam body 110 and displace toward the inside of the vehicle.

[0069] In addition, in this embodiment, such as Figure 3 As shown, the non-fixed portion 124 is configured to span the flange portion 120F and the recess 120R. By configuring the non-fixed portion 124 to span the flange portion 120F and the recess 120R, so that both the mating surface 120C and the non-fixed portion 124 are continuous with the recess 120R, the rigidity of the non-fixed portion 124 can be improved. Therefore, when subjected to an impact, the non-fixed portion 124 more reliably pushes a corresponding specific part of the passenger (e.g., the knee) inward, deformation of the non-fixed portion 124 can be suppressed.

[0070] In summary, the door crossbeam of the present invention has a non-fixed portion located at the knee position of the passenger. When the door crossbeam deforms due to a side impact, the non-fixed portion moves away from the door crossbeam body and towards the inward side of the vehicle as the fixed portion deforms along the crossbeam body. Since the non-fixed portion is located at the knee position of the passenger inside the vehicle, it can push the passenger's knee towards the inward side of the vehicle (through the door trim panel, etc.), thereby reducing the impact on the thigh area, preventing lower limb injuries to passengers inside the vehicle, and improving safety.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A door crossbeam, characterized in that, For installation in a vehicle door, the door crossbeam includes: The crossbeam body extends along the longitudinal direction of the vehicle; and The inner component is located on the inner side of the crossbeam body; The inner component has: The fixing part is fixed to the crossbeam body; The non-fixed part is not fixed to the beam body and is positioned further forward in the front-rear direction than the fixed part; and An outer member is disposed on the outer side of the crossbeam body, with the crossbeam body positioned between the inner member and the outer member in the width direction of the vehicle. The inner member has a mating surface extending along the front-rear direction for engaging with the outer member, and the non-fixed portion is configured to be continuous with the mating surface. The inner member has a recess for receiving a portion of the beam body and a flange portion disposed above and below the recess, and the mating surface and the non-fixed portion are disposed on the flange portion. The door has an inner door panel located on the inside of the crossbeam body, the inner door panel having an opening, and the non-fixed part being positioned overlapping the opening when viewed in the vehicle width direction.

2. The door crossbeam according to claim 1, characterized in that, The non-fixed portion is configured to be continuous with the fixed portion.

3. The door crossbeam according to claim 1, characterized in that, The non-fixed portion is configured to span across the flange portion and the recess portion.

4. The door crossbeam according to any one of claims 1 to 3, characterized in that, The crossbeam body has a front intersection point that intersects the front pillar of the vehicle in the vehicle width direction and a rear intersection point that intersects the middle pillar of the vehicle in the vehicle width direction. The non-fixed part is located further forward than the middle position of the front intersection point and the rear intersection point.

5. The door crossbeam according to any one of claims 1 to 3, characterized in that, The crossbeam body has an innermost point located in the vehicle width direction when it bulges out to the side due to deformation, and the non-fixed part is located further forward than the innermost point.

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