Size-adjustable luggage rack for vehicle

Abstract

The utility model belongs to the technical field of automobile luggage racks, and particularly relates to a size-adjustable automobile luggage rack which comprises a fixed frame installed on the top of an automobile, positioning through holes are formed in the two sides of the fixed frame at intervals in the axial direction of the fixed frame, and the two ends of the fixed frame are connected with movable frames capable of stretching out and drawing back in the axial direction of the fixed frame in a sliding mode. A positioning mechanism which can be matched with the positioning through hole is arranged on the opposite side between the movable frame and the positioning through hole; the positioning mechanism is provided with a movable positioning bolt, and the positioning bolt is configured to be capable of retracting out of or stretching into the positioning through hole under the action of external force so as to release and lock the sliding connection between the fixed frame and the movable frame. The telescopic fixed movable frames are arranged at the two ends of the fixed frame with the fixed size, so that when the movable frames stretch out, the bearing area of the fixed frame can be increased, the size can be adjusted, and a user can flexibly use the device conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle luggage rack, specifically relates to a size adjustable vehicle luggage rack. BACKGROUND

[0002] With the rapid development of the automobile industry and the increasing diversification of people's lifestyle, as an important travel tool, the functional expansion demand of the automobile is increasingly prominent. As a key component for increasing the cargo space of the vehicle, the automobile luggage rack is widely used in the scenes of self-driving tour, outdoor exploration, moving house and the like.

[0003] The traditional automobile luggage rack has many limitations in design and function, and the size of the automobile luggage rack on the market is mostly relatively fixed. The fixed size design exposes obvious defects when facing different user's loading requirements;

[0004] For example: the size and shape of the articles carried by the user are different, from the small and exquisite luggage case to the large size bicycle, snowboard and irregular shape outdoor equipment. The fixed size luggage rack cannot be flexibly adjusted according to the size of these different articles, so that the loading and fixing of the articles become very difficult; secondly, for the large size luggage rack, since it cannot be adjusted in size, it will cause the wind resistance of the vehicle to increase, and the fuel consumption of the vehicle will be improved.

[0005] In summary, the current automobile luggage rack with relatively fixed size cannot be adjusted, which seriously restricts its applicability and functionality in different vehicle models and various loading requirement scenes, and a new type of automobile luggage rack technology capable of flexibly adjusting the size is urgently needed to meet the growing market demand. INVENTION CONTENTS

[0006] To achieve the above object, the utility model provides the following technical scheme: a size adjustable vehicle luggage rack, comprising a fixed frame installed on the top of the automobile, the both sides of the fixed frame are provided with positioning through holes arranged along the axial direction, the both ends of the fixed frame are slidably connected with movable frames which can be extended and retracted along the axial direction, and a positioning mechanism which can cooperate with the positioning through holes is arranged on the opposite side between the movable frame and the positioning through hole;

[0007] The positioning mechanism has a movable positioning bolt, which is configured to be able to retract or extend into the positioning through hole under the action of external force, so as to release and lock the sliding connection between the fixed frame and the movable frame.

[0008] As a preferred size adjustable vehicle luggage rack of the utility model, the fixed frame comprises at least two groups of fixed frame longitudinal rods arranged side by side, and a fixed frame cross rod for connecting the fixed frame longitudinal rods.

[0009] Preferably, the positioning through hole is arranged on the circumferential side of the fixing frame longitudinal rod located at the outermost side.

[0010] Preferably, the fixing frame longitudinal rod is a cylindrical structure with both ends being communicated, and a necked portion with gradually reduced radial dimension is arranged at the end of the cylindrical structure.

[0011] Preferably, the movable frame comprises a movable frame horizontal rod, and at least two groups of movable frame longitudinal rods connected side by side on the circumferential side of the movable frame horizontal rod, and one end of the movable frame longitudinal rod is movably inserted into the fixing frame longitudinal rod.

[0012] Preferably, the movable frame longitudinal rod located at the outermost side is internally provided with a movable groove with one end being communicated with the outside, and the positioning mechanism is arranged in the movable groove.

[0013] Preferably, the positioning mechanism further comprises an elastic element, and the positioning bolt is connected to one end of the elastic element, so as to be elastically retracted or extended into the movable groove through the elastic element.

[0014] Preferably, the circumferential side of the positioning bolt is provided with a threaded rib.

[0015] Preferably, the fastener is threadedly connected with the positioning bolt through the threaded rib, so as to limit the movement of the positioning bolt.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a movable frame with telescopic fixing is arranged at both ends of the fixing frame with fixed size, so that when the movable frame is extended, the carrying capacity of the fixing frame can be increased, thereby realizing the size adjustment to facilitate the flexible use of the user, and when the movable frame is retracted, the luggage rack can be kept in the smallest size, thereby reducing the wind resistance during driving. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings are used to provide further understanding of the utility model and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0019] Figure 1 It is the three-dimensional structure schematic view of the utility model;

[0020] Figure 2 This is a schematic diagram of the telescopic structure of the movable frame of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing frame structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the movable frame structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the fixed frame and the movable frame of this utility model when locked together by a positioning mechanism.

[0024] In the diagram: 1. Fixed frame; 11. Vertical bar of fixed frame; 12. Horizontal bar of fixed frame; 13. Narrowed opening; 14. Positioning through hole; 2. Movable frame; 21. Horizontal bar of movable frame; 22. Vertical bar of movable frame; 221. Movable groove; 222. Elastic element; 223. Positioning bolt; 224. Fastener; 3. Positioning mechanism; 4. Connecting part. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model relates to a car roof rack with adjustable dimensions, such as... Figures 1-2 As shown, the device includes a fixed frame 1. The bottom of the fixed frame 1 is provided with a connector 4 for fixing to the corresponding installation position on the roof of the car. The connector 4 can be a clamp that clamps and fixes to the longitudinal beam of the roof rack of the car, or a support that can be fixed to the reserved position corresponding to the roof of the car. The fixed frame 1 has positioning through holes 14 spaced apart along its axial direction on both sides. The two ends of the fixed frame 1 are slidably connected to movable frames 2 that can extend and retract along its axial direction. On the opposite side between the movable frame 2 and the positioning through holes 14, a positioning mechanism 3 that can cooperate with the positioning through holes 14 is provided. The positioning mechanism 3 has a movable positioning bolt 223, which is configured to retract or extend into the positioning through hole 14 under the action of external force, so as to release and lock the sliding connection between the fixed frame 1 and the movable frame 2.

[0027] like Figure 2As shown, when in use, the positioning bolt 223 is pressed to retract into the positioning through hole 14, then the movable frame 2 is pulled to slide in the fixed frame 1, after the position is changed, the positioning bolt 223 is extended into the positioning through hole 14 in the different position, so that the movable frame 2 is locked after extension and retraction, thereby realizing the size change of the luggage rack and flexible use.

[0028] In the embodiment, as shown in Figure 3 The fixed frame 1 includes four groups of fixed frame longitudinal rods 11 arranged side by side, and a fixed frame transverse rod 12 for connecting the four groups of fixed frame longitudinal rods 11. The fixed frame longitudinal rod 11 is a tubular structure with both ends communicating. The positioning through hole 14 is arranged on the side of the two outermost fixed frame longitudinal rods 11. It should be noted that the fixed frame longitudinal rod 11 can be increased or decreased according to the actual carrying demand and carrying capacity, but at least two groups should be arranged.

[0029] Further, as shown in Figure 4 The movable frame 2 includes a movable frame transverse rod 21 and at least two groups of movable frame longitudinal rods 22 connected side by side on the side of the movable frame transverse rod 21. In the embodiment, in order to ensure that the movable frame 2 has a relatively balanced carrying capacity, the number and position of the movable frame longitudinal rods 22 are arranged corresponding to the fixed frame longitudinal rods 11, and both are four groups. The outer wall size of the movable frame longitudinal rod 22 is matched with the inner wall size of the fixed frame longitudinal rod 11, and the end of each movable frame longitudinal rod 22 can be inserted into the inside of the corresponding fixed frame longitudinal rod 11.

[0030] As shown in Figure 5 In the two outermost movable frame longitudinal rods 22, an activity groove 221 for placing the positioning mechanism 3 is arranged. The activity groove 221 has an opening coaxially arranged with the positioning through hole 14, which is not marked in the figure. The opening communicates with the outside of the movable frame longitudinal rod 22. In addition to the positioning bolt 223, the positioning mechanism 3 also has a elastic element 222 arranged in the activity groove 221. The positioning bolt 223 is connected to one end of the elastic element 222, so as to be elastically retracted or extended into the activity groove 221 through the elastic element 222. In the embodiment, the elastic element 222 is a spring, and the positioning bolt 223 is a columnar pressing piece with a "convex" cross section. The smaller convex part of the pressing piece penetrates the opening of the activity groove 221, and the larger part can be movably arranged in the activity groove 221. By pressing the positioning bolt 223, the elastic element 222 can be compressed, and at this time the convex part of the positioning bolt 223 can be retracted into the opening of the activity groove 221. When the positioning bolt 223 is released, the positioning bolt 223 can be extended outside the activity groove 221 under the elastic release of the elastic element 222. If the movable frame longitudinal rod 22 is inserted into the inside of the fixed frame longitudinal rod 11, the positioning bolt 223 can penetrate the positioning through hole 14 arranged on the side of the fixed frame longitudinal rod 11.

[0031] Furthermore, in order to improve the stability of the locking between the movable frame 2 and the fixed frame 1, threaded ribs are provided on the periphery of the protruding part of the positioning bolt 223 with a smaller size. When the positioning bolt 223 passes through the positioning through hole 14, the movement of the positioning bolt 223 can be restricted by using a fastener 224 to thread it into the positioning bolt 223. In this embodiment, the preferred fastener 224 is a wing nut that is easy to screw and rotate.

[0032] Furthermore, in order to improve the radial support of the ends of the fixed frame longitudinal rod 11 for the movable frame longitudinal rod 22, such as... Figure 3 As shown, the end of the fixed frame longitudinal rod 11 is inwardly tapered in the radial dimension, which gradually shortens from the extension direction of the end of the fixed frame longitudinal rod 11, so as to form a constriction portion 13 at the end of the fixed frame longitudinal rod 11. From its inwardly tapered shape, the constriction portion 13 forms a frustum around the periphery of the movable frame longitudinal rod 22. The triangular structure of the frustum cross section improves the radial support of the end of the fixed frame longitudinal rod 11.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A size-adjustable vehicle roof rack, comprising a mounting bracket (1) installed on the roof of a vehicle, characterized in that: The fixed frame (1) has positioning through holes (14) spaced apart along its axial direction on both sides. The fixed frame (1) is slidably connected to movable frames (2) that can extend and retract along its axial direction at both ends. A positioning mechanism (3) that can cooperate with the positioning through holes (14) is provided on the opposite side between the movable frame (2) and the positioning through holes (14). The positioning mechanism (3) has a movable positioning bolt (223) configured to retract or extend into the positioning through hole (14) under external force to release and lock the sliding connection between the fixed frame (1) and the movable frame (2).

2. The adjustable-size car roof rack according to claim 1, characterized in that: The fixing frame (1) includes at least two sets of fixing frame longitudinal bars (11) arranged in parallel, and fixing frame cross bars (12) for connecting the fixing frame longitudinal bars (11).

3. The adjustable-size car roof rack according to claim 2, characterized in that: The positioning through hole (14) is opened on the periphery of the outermost longitudinal rod (11) of the fixing frame.

4. The adjustable-size vehicle roof rack according to claim 2, characterized in that: The fixed frame longitudinal rod (11) is a cylindrical structure with both ends connected, and a constricted part (13) with gradually decreasing radial dimensions is provided at the end of the cylindrical structure.

5. The adjustable-size car roof rack according to claim 2, characterized in that: The movable frame (2) includes a movable frame crossbar (21) and at least two sets of movable frame longitudinal bars (22) connected in parallel around the movable frame crossbar (21), with one end of the movable frame longitudinal bar (22) movably inserted into the fixed frame longitudinal bar (11).

6. The adjustable-size vehicle roof rack according to claim 5, characterized in that: The outermost movable frame longitudinal rod (22) has an movable groove (221) with one end connected to the outside, and the positioning mechanism (3) is located in the movable groove (221).

7. The adjustable-size vehicle roof rack according to claim 6, characterized in that: The positioning mechanism (3) also has an elastic element (222), and the positioning bolt (223) is connected to one end of the elastic element (222) to retract or extend into the movable groove (221) by the elasticity of the elastic element (222).

8. The adjustable-size vehicle roof rack according to claim 1, characterized in that: The positioning bolt (223) is provided with threaded ribs on its periphery.

9. The adjustable-size vehicle roof rack according to claim 8, characterized in that: The fastener (224) is threadedly connected to the positioning bolt (223) via a threaded rib to restrict the movement of the positioning bolt (223).

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