Multifunctional gantry with adjustable size in three directions

By designing adjustable gantry support frames and longitudinal support frame components, the problem of fixed car roof rack dimensions was solved, enabling flexible adjustment of the roof platform to adapt to various usage scenarios and improving usability and driving performance.

CN224375477UActive Publication Date: 2026-06-19武清华

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
武清华
Filing Date
2025-07-23
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing car roof racks have fixed roof platform dimensions, making it difficult to adjust them according to usage scenarios. This results in the car's appearance and driving performance being affected when placing large items.

Method used

Design a multi-functional gantry frame, including an adjustable gantry support frame assembly and a longitudinal support frame assembly. By sliding, telescopically extending and lifting to adjust the position of the crossbar, connecting frame and mounting base, the size of the roof rack can be adjusted in three directions: length, width and height.

Benefits of technology

It enables flexible adjustment of car roof racks in different sizes to meet various usage needs and avoids the inconvenience of driving and the impact on appearance caused by fixed sizes.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a multi-functional gantry frame with adjustable dimensions in three directions, including a roof rack and a pair of gantry support frame assemblies. The pair of gantry support frame assemblies are installed parallel to each other on the roof rack. Each gantry support frame assembly includes a crossbar, a pair of L-shaped connecting frames, and a pair of mounting seats. The bottom end of the mounting seat is slidably installed on the roof rack in the longitudinal direction, allowing the mounting position of the mounting seat to be adjusted longitudinally. At the same time, the bottom end of the connecting frame is slidably installed on the top end of the mounting seat, allowing the connecting frame to be raised and lowered relative to the mounting seat. In addition, the opposite ends of the crossbar can be horizontally extended and slidably installed on the pair of connecting frames, and the installation length of the crossbar in the lateral direction can be extended and adjusted. Therefore, by adjusting the sliding of the mounting seats, connecting frames, and crossbar, the installation position of the multi-functional gantry frame in the length, width, and height directions can be adjusted to meet the needs of various sizes.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a three-directional adjustable gantry frame. Background Technology

[0002] A car roof rack is a platform installed on the roof of a car to hold items, compensating for insufficient cargo space in the trunk. With the increasing popularity of cars, more and more car owners prefer road trips. To address this, some car owners utilize the roof rack structure to place tents on the support platform or hang side tents on one side of the roof rack, thus enriching its functionality.

[0003] In existing technologies, the space dimensions of the roof platform formed by the roof rack are fixed, meaning it is difficult to change its size according to the needs of the usage scenario. For example, if a larger tent can be placed on the roof platform, it is desirable for the roof platform to have a larger external size. However, a larger external roof platform will increase the external size of the vehicle, which will have an adverse effect on the driving of the car. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a multi-functional gantry frame with adjustable dimensions in three directions and adjustable three-dimensional installation direction.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This application provides a multi-functional gantry rack with three-way adjustable dimensions, including a roof rack and a pair of gantry support frame assemblies. The pair of gantry support frame assemblies are installed parallel to each other on the roof rack. Each gantry support frame assembly includes a crossbar, a pair of L-shaped connecting brackets, and a pair of mounting seats. The crossbar is laterally positioned above the roof rack. One end of each pair of connecting brackets is telescopically slidably installed in the inner cavity of opposite ends of the crossbar. The upper ends of each pair of mounting seats are respectively connected to the other ends of the pair of connecting brackets to form a sliding connection with adjustable installation height. The bottom end of each mounting seat is slidably installed on one side edge of the roof rack. The mounting seat can slide along the longitudinal direction of the roof rack. A locking screw is installed between the crossbar and the connecting bracket. A locking assembly is installed between the upper end of the mounting seat and the other end of the connecting bracket.

[0007] Furthermore, the gantry support frame assembly also includes a sliding connector and a metal sliding block. The sliding connector is slidably mounted on the outer peripheral surface of the connecting frame. The sliding connector is provided with a mounting groove for placing the metal sliding block. A notch is provided on one side of the mounting groove. One side of the metal sliding block is slidably connected to the connecting frame. The sliding connector, the metal sliding block, and the mounting base are fixedly mounted on the connecting frame by the locking assembly.

[0008] Furthermore, the locking assembly includes a locking screw, and the metal sliding block, sliding connector, connecting bracket and mounting base are respectively provided with corresponding threaded holes, and the locking screw is installed in the threaded holes.

[0009] Furthermore, the upper surface of the crossbar is provided with a plurality of connecting holes spaced apart along its length for engaging with the locking screws.

[0010] Furthermore, the roof rack has slots on the top surfaces of its opposite sides along its length, and the bottom end of the mounting base is secured in the slots by T-bolts and nuts.

[0011] Furthermore, it also includes a pair of longitudinal support frame assemblies, which are fixedly installed in parallel along the longitudinal direction between the top ends of the pair of gantry support frame assemblies. Each longitudinal support frame assembly includes a pair of "L"-shaped connectors and a longitudinal connecting frame. One end of each pair of connectors is fixedly installed on the top end of the gantry support frame assembly, and the opposite ends of the longitudinal connecting frame are fixedly installed on the other ends of the pair of connectors.

[0012] Furthermore, the longitudinal connecting frame includes a first longitudinal connecting frame, a second longitudinal connecting frame, and connecting screws. A first mounting hole is provided at one end of the upper surface of the first longitudinal connecting frame, and a plurality of evenly spaced second mounting holes are provided at one end of the upper surface of the second longitudinal connecting frame along its length direction. One end of the second longitudinal connecting frame extends into and slides in the inner cavity of one end of the first longitudinal connecting frame. The first longitudinal connecting frame and the second longitudinal connecting frame are locked together by connecting screws inserted into the first mounting hole and the second mounting hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] By adopting the aforementioned multi-functional gantry frame, the bottom end of the mounting base is slidably mounted longitudinally on the roof rack, allowing for longitudinal adjustment of the mounting position. Simultaneously, the bottom end of the connecting frame is slidably mounted on the top end of the mounting base, enabling the connecting frame to move up and down relative to the mounting base. Furthermore, the opposite ends of the crossbar can be horizontally telescopically mounted on a pair of connecting frames, allowing for telescopic adjustment of the crossbar's installation length in the lateral direction. Therefore, through the sliding adjustment of the mounting base, connecting frame, and crossbar, the installation position of the multi-functional gantry frame can be adjusted in the length, width, and height directions to meet the needs of various sizes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a multi-functional gantry frame with adjustable dimensions in three directions, as described in the embodiments of this application.

[0016] Figure 2 This is a three-dimensional structural diagram of the gantry support frame assembly in the embodiments of this application.

[0017] Figure 3 This is an exploded view of the installation and assembly structure of the gantry support frame assembly in the embodiments of this application.

[0018] Figure 4 This is a schematic diagram of the structure in which the sliding connector is mounted on the connecting frame in an embodiment of this application.

[0019] Figure 5 This is an exploded view of the installation and assembly structure between the mounting base, connecting frame, and sliding connector in the embodiments of this application.

[0020] Figure 6 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0021] Figure 7 for Figure 5 A magnified schematic diagram of the structure at point B in the diagram.

[0022] In the picture:

[0023] 100-Multi-functional Gantry Frame;

[0024] 10-Roof rack; 11-Card slot;

[0025] 20-Gantry support frame assembly; 211-Mounting base; 212-Connecting bracket; 213-Mounting hole; 214-Locking screw; 215-Connecting hole; 22-Crossbar; 23-Sliding connector; 24-Metal sliding block; 25-Nut; 26-T-bolt; 27-Mounting groove; 271-Notch;

[0026] 30 - Longitudinal support frame assembly; 31 - First longitudinal connecting frame; 32 - Second longitudinal connecting frame; 33 - Connector; 34 - First mounting hole; 35 - Second mounting hole. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] See appendix Figure 1 To be continued Figure 4 As shown, this embodiment provides a multi-functional gantry rack 100 with adjustable dimensions in three directions, including a roof rack 10 and a pair of gantry support frame assemblies 20, which are arranged at opposite ends in the width direction of the roof rack 10.

[0029] See attached document Figure 2 To be continued Figure 6 As shown, in this embodiment, the gantry support frame assembly 20 includes a crossbar 22, a pair of L-shaped connecting frames 212, and a pair of mounting seats 211. The crossbar 22 is arranged horizontally above the roof rack 10. The pair of connecting frames 212 are symmetrically arranged on the left and right sides of the crossbar 22. The connecting frames 212 have an L-shaped external structure, with one end of the connecting frame 212 arranged horizontally and the other end extending vertically downward. The horizontally arranged end of the connecting frame 212 is slidably mounted in the inner cavity of one end of the crossbar 22. (Refer to the attached diagram.) Figure 3 and attached Figure 6 As shown, the crossbar 22 can be telescopically moved along the horizontal end of the connecting frame 212. That is, the length of the part of the crossbar 22 that overlaps with the connecting frame 212 can be changed by telescopically moving the crossbar 22 on the connecting frame 212, thereby adjusting the installation length of the crossbar 22 on the connecting frame 212.

[0030] See attached document Figure 6 As shown, in this embodiment, the crossbar 22 and the connecting frame 212 are fixedly connected by locking screws 214. The connecting frame 212 has a vertically penetrating mounting hole 213 at one horizontal end, and the crossbar 22 has several vertically penetrating connecting holes 215 spaced along its length at its upper end faces at opposite ends. When installing the crossbar 22, the connecting hole 215 at the corresponding position on the connecting frame 212 is aligned with the mounting hole 213 on the connecting frame 212, based on the crossbar's installation length on the connecting frame. After the mounting hole 213 and connecting hole 215 are aligned, the locking screw 214 is inserted and the nut is tightened to fix the crossbar 22 on the connecting frame 212. When the installation position of the crossbar 22 needs to be adjusted, the nut and locking screw 214 are loosened, the crossbar 22 is moved to the desired position, and then the locking screw 214 and nut are tightened again to fix the crossbar 22 on the connecting frame 212.

[0031] See attached document Figure 2 To be continued Figure 4 As shown, the upper ends of a pair of mounting seats 211 respectively correspond to the other ends of a pair of connecting brackets 212 to form an adjustable sliding connection. The bottom end of the mounting seat 211 is slidably installed on one side edge (longitudinal direction) of the roof rack 10. The mounting seat 211 can slide along the longitudinal direction of the roof rack 10. The upper end of the mounting seat 211 and the other end of the connecting bracket 212 are equipped with locking components, which can fix the mounting seat 211 on the connecting bracket 212.

[0032] See attached document Figure 4 and attached Figure 5 As shown, the vertically downward end of the connecting bracket 212 is inserted into the inner cavity of the upper end of the mounting base 211, and the vertically downward end of the connecting bracket 212 can slide up and down along the inner cavity of the upper end of the mounting base 211 to change the installation height of the vertically downward end of the connecting bracket 212 within the mounting base 211. It can be understood that by changing the installation height of the connecting bracket 212 within the mounting base 211, the installation height of the upper crossbar 22 can be changed.

[0033] See attached document Figure 4 Appendix Figure 5 and attached Figure 7 As shown, in order to facilitate the sliding adjustment between the mounting base 211 and the connecting frame 212, in this embodiment, the gantry support frame assembly 20 further includes a sliding connector 23 and a metal sliding block 24. The sliding connector 23 is slidably mounted on the outer peripheral surface of the connecting frame 212. The sliding connector 23 is provided with a mounting groove 27 for placing the metal sliding block 24. Notches 271 are provided on one opposite side of the mounting groove 27. One opposite side of the metal sliding block 24 is slidably connected to the connecting frame 212 through the notches 271. The sliding connector 23, the metal sliding block 24 and the mounting base 211 are fixedly mounted on the connecting frame 212 by a locking assembly. By using a metal slider block made of metal, the sliding head 23 on the connecting frame 212 is raised and lowered by sliding between the metal slider block 24 and the connecting frame 212. The metal slider block 24 is made of the same material as the connecting frame 212, which facilitates the raising and lowering of the mounting base 211 and the connecting frame 212 and improves the smoothness of the sliding adjustment between the mounting base 211 and the connecting frame 212.

[0034] See attached document Figure 1As shown, in this embodiment, the roof rack 10 has slots 11 on the top surfaces of its opposite sides along its length. The bottom end of the mounting base 211 is secured in the slots 11 by a T-bolt 26 and a nut 25. By using the structure of the T-bolt 26 and the slots 11, when the mounting base 211 needs to be adjusted on the roof rack 10, the nut 25 can be loosened and the T-bolt 26 moved along the slots 11 until it reaches the desired position. Then, the nut 25 is tightened to secure the T-bolt 26 in the slots 11 on the roof rack 10, thus allowing the mounting base 211 to be adjusted and moved on the roof rack 10.

[0035] Reference Figure 1 As shown, a pair of longitudinal support frame assemblies 30 are also installed longitudinally between a pair of gantry support frame assemblies 20. The pair of longitudinal support frame assemblies 30 are fixedly installed parallel to each other in the longitudinal direction between the top ends of the pair of gantry support frame assemblies 20. The longitudinal support frame assembly 30 includes a pair of "L"-shaped connectors 33 and a longitudinal connecting frame. One end of the pair of connectors 33 is fixedly installed on the top end of the gantry support frame assembly 20, for example, one end of the pair of connectors 33 is fixedly installed on the top end of the connecting frame 212. The opposite ends of the longitudinal connecting frame are fixedly installed on the other ends of the pair of connectors 33.

[0036] Continue to refer to the appendix Figure 1 As shown, to enable adjustment of the longitudinal length of the longitudinal connecting frame, the longitudinal connecting frame includes a first longitudinal connecting frame 31, a second longitudinal connecting frame 32, and connecting screws. A first mounting hole 34 is provided on the inner side of the upper end face of the first longitudinal connecting frame 31 (i.e., the end furthest from the connector 33). A plurality of evenly spaced second mounting holes 35 are provided on the inner side of the upper end face of the second longitudinal connecting frame 32 (i.e., the end furthest from the connector 33) along its length. The inner end of the second longitudinal connecting frame 32 extends into and slides within the inner cavity of the inner end of the first longitudinal connecting frame 31. Depending on the required length of the longitudinal connecting frame, the second longitudinal connecting frame 32 is slid to change its length extending into the inner cavity of the first longitudinal connecting frame 31. After aligning the first mounting hole 34 with the corresponding second mounting hole 35, the connecting screws are screwed in to lock them in place.

[0037] In summary, this solution utilizes the aforementioned multi-functional gantry frame. The bottom end of the mounting base 211 slides longitudinally onto the roof rack 10, allowing for longitudinal adjustment of the mounting position. Simultaneously, the bottom end of the connecting frame 212 slides onto the top end of the mounting base 211, enabling the connecting frame 212 to move up and down relative to the mounting base 211. Furthermore, the opposite ends of the crossbar 22 can be horizontally extended and slidably mounted on a pair of connecting frames 212, allowing for adjustment of the crossbar 22's horizontal length. Therefore, through the sliding adjustment of the mounting base 211, connecting frame 212, and crossbar 22, the installation position of the multi-functional gantry frame can be adjusted in the length, width, and height directions to meet the needs of various sizes.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A three-directionally adjustable size multifunction gantry, characterized in that, The device includes a roof rack and a pair of gantry support frame assemblies. The pair of gantry support frame assemblies are mounted parallel to each other on the roof rack. Each gantry support frame assembly includes a crossbar, a pair of "L"-shaped connecting brackets, and a pair of mounting seats. The crossbar is horizontally positioned above the roof rack. One end of each pair of connecting brackets is telescopically slidably mounted in the inner cavities of opposite ends of the crossbar. The upper ends of each pair of mounting seats are respectively connected to the other ends of the connecting brackets to form an adjustable mounting height sliding connection. The bottom end of each mounting seat is slidably mounted on one side edge of the roof rack. The mounting seat can slide along the longitudinal direction of the roof rack. A locking screw is installed between the crossbar and the connecting bracket. A locking assembly is installed between the upper end of the mounting seat and the other end of the connecting bracket.

2. The three-directionally adjustable size multifunctional portal frame according to claim 1, characterized in that, The gantry support frame assembly also includes a sliding connector and a metal sliding block. The sliding connector is slidably mounted on the outer peripheral surface of the connecting frame. The sliding connector is provided with a mounting groove for placing the metal sliding block. One side of the mounting groove is provided with a notch on each side. One side of the metal sliding block is slidably connected to the connecting frame. The sliding connector, the metal sliding block and the mounting base are fixedly mounted on the connecting frame by the locking assembly.

3. The three direction adjustable size multifunctional portal frame according to claim 2, characterized in that, The locking assembly includes a locking screw. The metal sliding block, sliding connector, connecting bracket and mounting base are respectively provided with corresponding threaded holes, and the locking screw is installed in the threaded hole.

4. The three direction adjustable size multifunctional portal frame according to claim 1, characterized in that, The upper surface of the crossbar is provided with a plurality of connecting holes spaced apart along its length for engaging with the locking screws.

5. A multi-functional gantry crane with adjustable dimensions in three directions according to claim 1, characterized in that, The roof rack has slots on the top surfaces of opposite sides along its length, and the bottom of the mounting base is secured in the slots by T-bolts and nuts.

6. A multi-functional gantry frame with adjustable dimensions in three directions according to claim 1, characterized in that, It also includes a pair of longitudinal support frame assemblies, which are fixedly installed in parallel along the longitudinal direction between the top ends of the pair of gantry support frame assemblies. Each longitudinal support frame assembly includes a pair of "L"-shaped connectors and a longitudinal connecting frame. One end of each pair of connectors is fixedly installed on the top end of the gantry support frame assembly, and the opposite ends of the longitudinal connecting frame are fixedly installed on the other ends of the pair of connectors.

7. A multi-functional gantry frame with adjustable dimensions in three directions according to claim 6, characterized in that, The longitudinal connecting frame includes a first longitudinal connecting frame, a second longitudinal connecting frame, and connecting screws. A first mounting hole is provided at one end of the upper surface of the first longitudinal connecting frame. A plurality of evenly spaced second mounting holes are provided at one end of the upper surface of the second longitudinal connecting frame along its length. One end of the second longitudinal connecting frame extends into and slides into the inner cavity of one end of the first longitudinal connecting frame. The first longitudinal connecting frame and the second longitudinal connecting frame are locked together by connecting screws inserted into the first mounting hole and the second mounting hole.