CN212220392U - Header board tubular beams assembly and car - Google Patents
Header board tubular beams assembly and car Download PDFInfo
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- CN212220392U CN212220392U CN202020794215.6U CN202020794215U CN212220392U CN 212220392 U CN212220392 U CN 212220392U CN 202020794215 U CN202020794215 U CN 202020794215U CN 212220392 U CN212220392 U CN 212220392U
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- 238000005452 bending Methods 0.000 description 2
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- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The utility model provides an automobile instrument panel tubular beam assembly and an automobile, wherein the automobile instrument panel tubular beam assembly comprises an instrument panel tubular beam and a fixed support assembly which is arranged on the instrument panel tubular beam and is fixedly connected with an automobile body of the automobile; instrument board tubular beams includes the left part along the axial of instrument board tubular beams, middle part and right part, fixed bolster subassembly includes left end fixed bolster, right-hand member fixed bolster, left front fixed bolster and panel erection support, header board tubular beams assembly still includes right front fixed bolster, the length direction of right front fixed bolster along the car extends, the one end of right front fixed bolster and the right part fixed connection of instrument board tubular beams, the other end be used for with the right front fixed connection of automobile body. The utility model discloses set up right front fixed bolster at instrument board tubular beams right part, play the supporting role to instrument board tubular beams right part weak point, improved the modal frequency of instrument board tubular beams, reduce instrument board tubular beams and external excitation or other system resonance's risk, improve and experience by bus.
Description
Technical Field
The utility model discloses the automobile manufacturing field, in particular to header board tubular beams assembly reaches car including this header board tubular beams assembly.
Background
The automobile instrument panel pipe beam assembly is a main bearing part of a steering system and an instrument panel system, is directly connected with an automobile body and bears the load transmitted by the supporting part and the connecting part. But in the running process of the automobile, the excitation frequency within the range of 0-32 Hz is generated by the unbalanced excitation from the road surface, the engine, the transmission shaft and the tire; the first-order natural frequency of other automobile part systems such as a decorated automobile body is about 30Hz generally, and the first-order natural frequency of a firewall is about 50-60 Hz generally. If the natural frequency of the instrument panel tubular beam is close to the excitation frequencies and the natural frequency of other automobile part systems, the instrument panel tubular beam can be caused to resonate, so that the comfort level of passengers is reduced, and the riding experience of the passengers is influenced.
Therefore, the modal frequency of the instrument panel tubular beam should be kept away from the external excitation frequency and the natural frequency of other parts and systems of the automobile. And the instrument panel beam mode is an important evaluation parameter of the vibration Noise (NVH) performance of the whole vehicle, the instrument panel tube beam mode is improved, the risk of resonance with the outside or other systems can be reduced, and the NVH performance of the whole vehicle is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve prior art instrument board tubular beams assembly and have instrument board tubular beams resonance risk to influence passenger's the problem of experience by bus. The utility model provides an instrument board tubular beams assembly sets up right front fixed bolster at instrument board tubular beams right part, plays the supporting role to instrument board tubular beams right part weak point, has improved the modal frequency of instrument board tubular beams, reduces instrument board tubular beams and external excitation or other system resonance's risk, improves and experiences by bus.
In order to solve the technical problem, the utility model provides an automobile instrument panel tubular beam assembly, which comprises an instrument panel tubular beam and a fixed support assembly arranged on the instrument panel tubular beam and fixedly connected with an automobile body of an automobile; the instrument panel tubular beam comprises a left part, a middle part and a right part along the axial direction of the instrument panel tubular beam, the fixed support assembly comprises a left end fixed support, a right end fixed support, a left front fixed support and a panel mounting support, the left end fixed support and the right end fixed support are respectively and fixedly arranged at two ends of the instrument panel tubular beam and are respectively used for being connected with two sides of a vehicle body, the left front fixed support is fixedly arranged at the left part and is used for being fixedly connected with the left front of the vehicle body, and the panel mounting support is fixedly arranged at the middle part of the instrument panel tubular beam and is used for being fixedly connected with; the fixed bracket component also comprises a right front fixed bracket, the right front fixed bracket extends along the length direction of the automobile, one end of the right front fixed bracket is fixedly connected with the right part of the instrument panel tubular beam, and the other end of the right front fixed bracket is fixedly connected with the right front of the automobile body.
By adopting the scheme, the right front fixing support is arranged at the right part of the instrument panel tubular beam, the weak point at the right part of the instrument panel tubular beam is supported, the integral structure of the instrument panel tubular beam assembly is strengthened, the modal frequency of the instrument panel tubular beam is improved, the risk of resonance of the instrument panel tubular beam and external excitation or other systems is reduced, and the riding experience is improved.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a header board tubular beams assembly, the one end of right front fixed bolster and the right part welding of instrument board tubular beams.
Adopt above-mentioned scheme, make the one end of right front fixed bolster and the right part of instrument board tubular beam be connected firmly.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses an automobile instrument board tubular beam assembly, the terminal surface of the other end of right front fixed bolster is provided with the bolt hole, the bolt hole be used for with the right front threaded connection of automobile body.
By adopting the scheme, the instrument panel tubular beam welded with the fixed support component is convenient to be connected with the front right of the automobile body.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a header board tubular beams assembly, the central point of the hookup location of right front fixed bolster and instrument board tubular beams and the axial distance of instrument board tubular beams in the one end of right side equal the central point of the hookup location of left front fixed bolster and instrument board tubular beams and the axial distance of instrument board tubular beams in the one end of left side.
By adopting the scheme, the connecting points of the right front fixing support and the left front fixing support on the instrument panel tubular beam are symmetrical in the axial direction of the instrument panel tubular beam in the axial direction, so that all the fixing supports connected with the vehicle body and arranged on the instrument panel tubular beam are symmetrically distributed in the axial direction, the connection is stable, and the modal frequency of the instrument panel tubular beam is improved.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a header board tubular beam assembly, right front fixed bolster is "mouth" font at the ascending cross-section of the extending direction of perpendicular to right front fixed bolster.
By adopting the scheme, the square-shaped bracket is of an upper, lower, left and right closed framework and has strong bending deformation resistance.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a header board tubular beam assembly, right front fixed bolster is the U-shaped in the ascending direction's of extending direction of perpendicular to right front fixed bolster section.
By adopting the scheme, the U-shaped structure is selected to save material cost under the condition that the mode meets the requirement.
According to the utility model discloses a further embodiment, the utility model discloses an instrument board tubular beams assembly that embodiment discloses, in the extending direction of right front fixed bolster, the size of all cross-sections from one end to the other end of right front fixed bolster is the same.
By adopting the scheme, the situations of uneven stress and overlarge stress at the sudden change position when the whole stress of the part is caused by the sudden change of the section shape of the right front fixing support can be avoided.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a header board tubular beams assembly, in the extending direction of right front fixed bolster, the cross-section smooth transition from one end to the other end of right front fixed bolster diminishes gradually.
By adopting the scheme, the right front fixing support can adapt to different arrangement requirements, and the conditions of uneven stress and overlarge stress at mutation positions when the whole stress of a part is caused by mutation of the section shape are avoided.
According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a header board tubular beams assembly is provided with the cambered surface that matches with instrument board tubular beams surface circumference in the one end of fixed bolster before the right side.
By adopting the scheme, one end of the right front fixing support connected with the instrument panel tubular beam is matched and attached with the instrument tubular beam in shape, so that the instrument tubular beam is convenient to weld and the like.
The utility model also provides a car, include the utility model provides an automobile instrument board tubular beams assembly.
By adopting the scheme, the modal frequency of the instrument panel tubular beam is improved, the risk of resonance between the instrument panel tubular beam and external excitation or other systems is reduced, and the riding experience is improved.
The utility model has the advantages that:
the utility model provides an instrument board tubular beams assembly sets up right front fixed bolster at instrument board tubular beams right part, plays the supporting role to instrument board tubular beams right part weak point, has strengthened the overall structure of instrument board tubular beams assembly, has improved the modal frequency of instrument board tubular beams, reduces instrument board tubular beams and external excitation or other system resonance's risk, improves experience by bus.
Drawings
Fig. 1 is a schematic structural view of a tubular beam assembly of an automobile instrument panel in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a right front fixing bracket of the dashboard tubular beam assembly according to the embodiment of the present invention 1;
FIG. 3 is a schematic cross-sectional view of the front right mounting bracket of FIG. 2;
fig. 4 is a schematic structural diagram of a cross section of another right front fixing bracket of the instrument panel tubular beam assembly of the utility model embodiment 1.
Description of reference numerals:
100: an instrument panel tubular beam;
110: a left portion; 120: a middle part; 130: a right portion;
200: a fixed bracket assembly;
210: a bracket is fixed at the left end; 220: a bracket is fixed at the right end; 230: a left front fixed bracket; 240: a panel mounting bracket; 250: a right front fixed bracket; 251: bolt holes.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
The utility model provides an automobile instrument panel tubular beam assembly, as shown in figure 1, comprising an instrument panel tubular beam 100 and a fixed support assembly 200 which is arranged on the instrument panel tubular beam 100 and is fixedly connected with the automobile body of an automobile; the instrument panel tubular beam 100 comprises a left part 110, a middle part 120 and a right part 130 along the axial direction of the instrument panel tubular beam 100, the fixed support assembly 200 comprises a left end fixed support 210, a right end fixed support 220, a left front fixed support 230 and a panel mounting support 240, the left end fixed support 210 and the right end fixed support 220 are respectively and fixedly arranged at two ends of the instrument panel tubular beam 100 and are respectively used for being connected with two sides of a vehicle body, the left front fixed support 230 is fixedly arranged at the left part 110 and is used for being fixedly connected with the left front of the vehicle body, and the panel mounting support 240 is fixedly arranged at the middle part 120 of the instrument panel tubular beam 100 and is used for being fixedly connected with the; the fixing bracket assembly 200 further includes a right front fixing bracket 250, the right front fixing bracket 250 extending in a length direction of the automobile, and one end of the right front fixing bracket 250 is fixedly connected with the right portion 130 of the dash tubular beam 100 and the other end is used for fixedly connecting with the right front of the automobile body.
Specifically, the left end fixing bracket 210, the right end fixing bracket 220, the left front fixing bracket 230, and the panel mounting bracket 240 are respectively fixedly connected to the instrument panel tubular beam 100, and the specific fixing connection manner is preferably welding; wherein the panel mounting bracket 240 includes two bracket assemblies disposed in parallel and extending in a direction perpendicular to the extending direction of the instrument panel tubular beam 100. The fixed connection mode of one end of the right front fixing bracket 250 and the right portion 130 of the instrument panel tubular beam 100 can be welding, riveting, screwing, bonding and the like, and the fixed connection mode of the other end and the right front of the vehicle body can be screwing, riveting, welding, bonding and the like.
The connection position of the right front fixing bracket 250 to the right portion 130 of the instrument panel tubular beam 100 is determined according to the weak position of the instrument panel tubular beam 100. Specifically, software such as Ls-Dyna software is used for establishing a finite element model of the instrument panel tubular beam 100, simulation analysis of instrument panel tubular beam modes is carried out, cloud pictures of instrument panel tubular beam mode vibration type results are observed, weak positions are obtained, and reinforcing weak position support has a positive effect on improving instrument tubular beam modes.
The instrument panel tubular beam assembly without the right front fixing bracket is used as a comparative example, and compared with the instrument panel tubular beam assembly with the right front fixing bracket 250 in the present embodiment. Through specific simulation analysis and calculation, the modal frequency of the instrument panel tubular beam without the right front fixing support 250 in the comparative example is 57-60Hz, the modal frequency of the instrument panel tubular beam 100 in the embodiment is 63-66Hz, and the modal frequency can be improved by about 7-10%. In the running process of the automobile, unbalanced excitation from a road surface, an engine, a transmission shaft and tires is carried out, and the frequency range of the generated excitation frequency is generally 0-32 Hz; the first-order natural frequency of other automobile part systems such as a decorated automobile body is about 30Hz generally, and the first-order natural frequency of a firewall is about 50-60 Hz generally. Therefore, the modal frequencies of the instrument panel tubular beam 100 in the embodiment after the right front fixing bracket 250 is added to support the right front side are increased, and the modal frequencies are further deviated from the excitation frequencies and the natural frequencies of other parts and systems of the automobile.
The instrument panel tubular beam 100 has a circular long tubular structure and provides support for various components of an air conditioner, an instrument panel, a steering system, etc. in a vehicle, however, the instrument panel tubular beam assembly of the prior art is usually supported by a fixed bracket at the left front side and is not supported by a fixed bracket at the right front side, so that the instrument panel tubular beam assembly is weaker at the right front side. By adopting the scheme, the right front fixing bracket 250 is arranged at the right part 130 of the instrument panel tubular beam 100, and plays a role in supporting the weak point of the right part 130 of the instrument panel tubular beam 100, so that the structural rigidity of the instrument panel tubular beam assembly is enhanced. The modal frequency calculation formula of the instrument panel tubular beam is as follows:
where f is frequency, k is structural stiffness, and m is mass.
Therefore, when the structural rigidity k of the instrument panel tubular beam assembly is increased, the frequency f is increased; therefore, the modal frequency of the instrument panel tubular beam 100 is improved, and the modal frequency of the instrument panel tubular beam 100 can be improved by about 7-10%, so that the risk of resonance between the instrument panel tubular beam 100 and external excitation or other systems is reduced, and the riding experience is improved.
According to another embodiment of the present invention, as shown in fig. 1, one end of the right front fixing bracket 250 is welded to the right portion 130 of the instrument panel tubular beam 100.
Specifically, the connection end of the right front fixing bracket 250 to the instrument panel tubular beam 100 may be provided in a shape matching the outer circumference of the instrument panel tubular beam 100, such as an arc shape, a ring shape, etc., for welding with the right portion 130 of the instrument panel tubular beam 100.
By adopting the scheme, one end of the right front fixing bracket 250 is firmly connected with the right part 130 of the instrument panel tubular beam 100.
According to another embodiment of the present invention, as shown in fig. 2, the end surface of the other end of the right front fixing bracket 250 is provided with a bolt hole 251, and the bolt hole 251 is used for being screwed with the right front of the vehicle body.
Specifically, the right front fixing bracket 250 and the vehicle body may be bolted through M6 by M8, and thus the bolt hole 251 should be adapted to the bolt accordingly.
By adopting the scheme, the instrument panel tubular beam 100 welded with the fixed bracket assembly is convenient to be connected with the front right of the automobile body.
According to another embodiment of the present invention, the axial distance between the center point of the connection position of the right front fixing bracket 250 and the instrument panel tubular beam 100 and the axial distance between the center point of the connection position of the instrument panel tubular beam 100 and the end of the instrument panel tubular beam 100 at the left portion 110 are equal to the axial distance between the center point of the connection position of the left front fixing bracket 230 and the instrument panel tubular beam 100 and the axial distance between the center point of the connection position of the instrument panel tubular.
Specifically, the connection position of the right or left front fixing bracket 250 or 230 to the dash panel tubular beam 100 may be a section having a certain length, wherein the center point refers to the center position of the section in the axial direction of the dash panel tubular beam 100.
By adopting the above scheme, the connection points of the right front fixing bracket 250 and the left front fixing bracket 230 on the instrument panel tubular beam 100 are axially and centrally symmetrical in the axial direction of the instrument panel tubular beam 100, so that all the fixing brackets connected with the vehicle body and arranged on the instrument panel tubular beam 100 are axially and symmetrically distributed, the connection is stable, and the modal frequency of the instrument panel tubular beam 100 is improved.
According to another embodiment of the present invention, as shown in fig. 3, the right front fixing bracket 250 has a cross-section in a direction perpendicular to the extending direction of the right front fixing bracket 250 in a shape of a "square".
Specifically, the right front fixing bracket 250 can be made of a 1-2mm thick section, the side length of the cross section in the shape of a Chinese character kou can be 25mm, and the specific size is determined according to the actual arrangement requirement of the instrument tubular beam.
By adopting the scheme, the square-shaped bracket is of an upper, lower, left and right closed framework and has strong bending deformation resistance.
According to another embodiment of the present invention, as shown in fig. 4, the right front fixing bracket 250 has a U-shaped cross section in a direction perpendicular to the extending direction of the right front fixing bracket 250.
Specifically, the right front fixing bracket 250 can be formed by punching a metal with a thickness of 4-8mm such as a steel material, and the side length of the U-shaped section can be 25-30 mm. The mouth end of the U-shaped section faces the upper side of the vehicle body.
By adopting the scheme, the U-shaped structure is selected to save material cost under the condition that the mode meets the requirement.
According to another embodiment of the present invention, all the cross-sections of the right front fixing bracket 250 from one end to the other end have the same size (not shown in the drawings) in the extending direction of the right front fixing bracket 250, that is, the shape and size of the right front fixing bracket 250 in the extending direction are consistent.
By adopting the scheme, the situations of uneven stress and overlarge stress at the sudden change position when the whole stress of the part is caused by the sudden change of the section shape of the right front fixing bracket 250 can be avoided.
According to another embodiment of the present invention, in the extending direction of the right front fixing bracket 250, the cross section of the right front fixing bracket 250 from one end to the other end is gradually decreased (not shown in the drawing), that is, the shape of the right front fixing bracket 250 is consistent in the extending direction, but the size is gently changed.
In addition, if the arrangement requirement cannot be met, the smooth transition method of the present embodiment may be adopted.
By adopting the scheme, the right front fixing bracket 250 can adapt to different arrangement requirements, and the situations of uneven stress and overlarge stress at the sudden change position when the whole stress of the part is caused by sudden change of the section shape are avoided.
According to another embodiment of the present invention, as shown in fig. 2, an arc surface circumferentially matching with the outer surface of the instrument panel tubular beam 100 is provided at one end of the right front fixing bracket 250.
By adopting the scheme, one end of the right front fixing bracket 250 connected with the instrument panel tubular beam 100 is matched and attached with the instrument tubular beam in shape, so that the instrument tubular beam is convenient to be fixedly connected by welding and the like.
Example 2
An automobile, comprising the automobile instrument panel tubular beam assembly of embodiment 1.
By adopting the scheme, the modal frequency of the instrument panel tubular beam is improved, the risk of resonance between the instrument panel tubular beam and external excitation or other systems is reduced, and the riding experience is improved.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. An automobile instrument panel tubular beam assembly comprises an instrument panel tubular beam and a fixed support assembly, wherein the fixed support assembly is arranged on the instrument panel tubular beam and is fixedly connected with an automobile body of an automobile; the instrument panel tubular beam comprises a left part, a middle part and a right part along the axial direction of the instrument panel tubular beam, the fixed support assembly comprises a left end fixed support, a right end fixed support, a left front fixed support and a panel mounting support, the left end fixed support and the right end fixed support are respectively and fixedly arranged at two ends of the instrument panel tubular beam and are respectively used for being connected with two sides of the vehicle body, the left front fixed support is fixedly arranged at the left part and is used for being fixedly connected with the left front part of the vehicle body, and the panel mounting support is fixedly arranged in the middle of the instrument panel tubular beam and is used for being fixedly connected with the bottom of the vehicle body; the automobile dashboard tubular beam fixing support is characterized by further comprising a right front fixing support, the right front fixing support extends along the length direction of an automobile, one end of the right front fixing support is fixedly connected with the right portion of the dashboard tubular beam, and the other end of the right front fixing support is fixedly connected with the right front of the automobile body.
2. The instrument panel tube beam assembly of claim 1 wherein said one end of said right front mounting bracket is welded to said right portion of said instrument panel tube beam.
3. A tube beam assembly for an automobile instrument panel according to claim 2, wherein an end face of the other end of the front right fixing bracket is provided with a bolt hole for screw-coupling with a front right of the vehicle body.
4. The automobile instrument panel tubular beam assembly according to any one of claims 1 to 3, wherein an axial distance between a center point of a connecting position of the right front fixing bracket and the instrument panel tubular beam and an end of the instrument panel tubular beam at the right portion is equal to an axial distance between a center point of a connecting position of the left front fixing bracket and the instrument panel tubular beam and an end of the instrument panel tubular beam at the left portion.
5. The automobile instrument panel tube beam assembly of claim 1, wherein the right front fixing bracket has a cross-section in a direction perpendicular to the extending direction of the right front fixing bracket in a shape of a letter "square".
6. The automobile instrument panel tube beam assembly of claim 1, wherein the right front fixing bracket has a U-shaped cross section in a direction perpendicular to the extending direction of the right front fixing bracket.
7. The automobile instrument panel tube beam assembly according to claim 5 or 6, wherein all the sections of the right front fixing bracket from the one end to the other end in the extending direction of the right front fixing bracket are the same in size.
8. The automobile instrument panel tube beam assembly according to claim 5 or 6, wherein the cross section of the right front fixing bracket from the one end to the other end is gradually reduced in the extending direction of the right front fixing bracket.
9. The automobile instrument panel tubular beam assembly according to claim 5 or 6, wherein an arc surface circumferentially matching with an outer surface of the instrument panel tubular beam is provided at the one end of the right front fixing bracket.
10. An automobile, comprising: a tube beam assembly for a motor vehicle instrument panel as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794215.6U CN212220392U (en) | 2020-05-13 | 2020-05-13 | Header board tubular beams assembly and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794215.6U CN212220392U (en) | 2020-05-13 | 2020-05-13 | Header board tubular beams assembly and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212220392U true CN212220392U (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020794215.6U Active CN212220392U (en) | 2020-05-13 | 2020-05-13 | Header board tubular beams assembly and car |
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| Country | Link |
|---|---|
| CN (1) | CN212220392U (en) |
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2020
- 2020-05-13 CN CN202020794215.6U patent/CN212220392U/en active Active
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