Stacked telescopic luggage rack on automobile roof

Abstract

The utility model relates to a laminated telescopic luggage rack for an automobile roof, which aims to solve the problems that the existing fixed roof luggage rack occupies a large space and prevents the original functions of a skylight from being played and the like. The laminated telescopic luggage rack comprises a plurality of longitudinal frame plates capable of being laminated on the two sides and transverse telescopic frame bodies at the front end and the rear end. A plurality of carrying cross rods are arranged between the laminated frame plates on the two sides, are of telescopic structures and are dynamically connected with the sliding grooves of the frame plates on the two sides through anti-falling rollers at the two ends; the transverse rods are connected through connecting rods. At ordinary times, the frame plates on the two sides are overlapped, and the carrying cross rod is folded between the inner sides of the frame plates at the innermost end. When the stacking frame plates are unfolded forwards or do stacking movement backwards, the front transverse telescopic frame bodies and the transverse rods do transverse unfolding or contracting movement along with the stacking frame plates. After the stacked frame plates are unfolded, the transverse rods can move in the frame plate sliding grooves, and the multiple transverse rods can be unfolded or folded in the longitudinal direction under driving of the connecting rods. And the luggage rack is clamped with an original longitudinal rod through U-shaped buckles on the outer sides of the lower ends of the frame plates on the two sides.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile modification accessories, and in particular relates to a foldable telescopic luggage rack on the roof of an automobile. Background Art

[0002] With the growing demand for multifunctionality of automobiles, roof racks have become an important accessory to enhance the storage and carrying capacity of automobiles. However, there is a significant problem in the design of existing roof racks. Such racks cannot be folded. Regardless of whether they are loaded with items, they are fixed on the roof and occupy the roof space, affecting the lighting and ventilation functions of the skylight. Moreover, both disassembly and installation are cumbersome. Therefore, the market is in urgent need of a roof rack solution that can be retracted, folded, and easily disassembled and assembled, so that it can reduce the occupied space when not in use without hindering the use of the skylight, and is easy to disassemble and assemble, and can be carried with the car. Utility Model Content

[0003] In view of the technical problems existing in the use of existing roof luggage racks, the utility model proposes a solution for a stackable retractable roof luggage rack for automobiles. After stacking, it can be retracted to the rear of the load-bearing longitudinal rod of the roof and adopts a bolt-free buckle design, which solves the problems that the existing roof luggage racks of automobiles cannot be retracted to cover the skylight and are cumbersome to disassemble and assemble.

[0004] The utility model is realized through the following technical scheme: a stackable telescopic luggage rack on the top of a car, characterized in that: it comprises stacked frame plates correspondingly arranged on the left and right sides and a transverse telescopic frame fixedly arranged at the front and rear ends of the stacked frame plates; a through-length T-shaped slideway is arranged on the upper part of the stacked frame plates; a through-length boss is arranged on the inner side of the stacked frame plates; a groove corresponding to the boss and capable of being wedged is arranged on the outer side of the stacked frame plates; a load-carrying crossbar slideway is also arranged on the inner side of the stacked frame plates; corresponding roller slideways are arranged at the upper and lower positions in the load-carrying crossbar slideway; a horizontally placed U-shaped buckle is arranged on the outer side of the lower part of the stacked frame plates; the stacked frame plates are of a multi-section structure, including a front-section stacked frame plate , multiple middle-section stacking frame plates and rear-section stacking frame plates; a number of load-bearing cross bars that can be extended and retracted left and right are arranged between the stacking frame plates on the left and right sides; anti-slip rollers that slide in the roller slideways are arranged at the upper and lower positions at both ends of the load-bearing cross bars; two connecting rods for driving the load-bearing cross bars to move forward and backward are arranged between each load-bearing cross bar; a fixed vertical shaft is fixedly arranged at the rear end of the T-shaped slideway of the front-section stacking frame plates and the middle-section stacking frame plates; a sliding vertical shaft that can move forward and backward is also arranged at the front end of the T-shaped slideway of the middle-section stacking frame plates and the rear-section stacking frame plates; a connecting steel sleeve connecting the fixed vertical shaft and the sliding vertical shaft is set between the fixed vertical shaft and the sliding vertical shaft on the adjacent section stacking frame plates.

[0005] Furthermore, the horizontally telescopic frame body includes a middle frame body and hollow frame bodies sleeved at both ends of the middle frame body; positioning pins for passing through the middle frame body and the hollow frame bodies are arranged at both ends of the middle frame body; positioning holes corresponding to the positioning pins are arranged on the middle frame body and the hollow frame bodies.

[0006] Furthermore, the load-carrying cross bar includes a flat long strip column body and hollow flat square tubes sleeved at the left and right ends of the flat long strip column body; long strip-shaped sliding grooves are arranged on the hollow flat square tubes; fixing pins that can slide left and right in the long strip-shaped sliding grooves are fixedly arranged on the flat long strip column body.

[0007] Furthermore, the fixed vertical shaft and the sliding vertical shaft include a smooth shaft with a thread at the upper part, a nut matching the thread, and a roller rotatably connected to the lower part of the smooth shaft; the smooth shaft is in interference fit with the roller; the roller of the fixed vertical shaft is fixed in the T-shaped slideway, and the roller of the sliding vertical shaft can slide back and forth in the T-shaped slideway; the connecting steel sleeve is sleeved on the smooth shafts of the fixed vertical shaft and the sliding vertical shaft.

[0008] Furthermore, the stacked frame plates are divided into multiple sections in an obliquely cut manner.

[0009] Furthermore, a stop block for restricting the front and back sliding range of a plurality of load-carrying cross bars is fixedly arranged in the load-carrying cross bar sliding groove near the rear end.

[0010] Furthermore, stop blocks for restricting the moving range of the sliding vertical shaft are arranged in the T-shaped slideways of the middle-section stacked frame plates and the rear-section stacked frame plates.

[0011] The beneficial effects and features of the present utility model:

[0012] Does not affect the skylight function: Through the stacked design, when not in use, it can be stacked and retracted backward, avoiding blocking the skylight and ensuring the normal lighting, ventilation and function as an emergency exit of the skylight.

[0013] Easy to install and disassemble: Due to the stacked design of this luggage rack, after retraction, the volume is reduced, making it easy to install and disassemble. At the same time, the design of the horizontal U-shaped buckle on the outer side of the frame plate is adopted. After the horizontal U-shaped buckle is inserted into the original vehicle roof longitudinal bar, it is locked simultaneously through the positioning and fixing of the load-carrying cross bar on the inner side of the frame plate without using bolts, making the installation and disassembly of the luggage rack very easy and fast.

[0014] Easy to carry and use as needed: Due to the design of the front and back horizontally telescopic frame body and the horizontally telescopic design of the load-carrying cross bar, after the luggage rack is longitudinally stacked and retracted, it can be further contracted horizontally, further reducing the volume of the luggage rack, and it can be conveniently placed in the vehicle trunk, realizing the on-vehicle carrying and using as needed of the luggage rack. Description of the Drawings

[0015] Figure 1 Top view schematic diagram of the expanded state of the present utility model;

[0016] Figure 2 Three-dimensional schematic diagram of the expanded state of the present utility model;

[0017] Figure 3 is Figure 1 Enlarged view schematic diagram of part B in

[0018] Figure 4 Cross-sectional structure schematic diagram of the stacked frame of the present utility model;

[0019] Figure 5 is Figure 1 Schematic diagram in the A-A direction in

[0020] Figure 6 Top view schematic diagram of the stacked and retracted state of the present utility model;

[0021] Figure 7 Top view schematic diagram of the retracted state of the load-carrying crossbar of the present utility model;

[0022] Figure 8 Schematic diagram of the connection relationship of the fixed vertical shaft, sliding vertical shaft and connecting steel sleeve of the present utility model.

[0023] Description of the main component numbers in the figure: 1, stacked frame plate; 101, front-segment stacked frame plate; 102, middle-segment stacked frame plate; 103, rear-segment stacked frame plate; 104, T-shaped slideway; 105, groove; 106, convex platform; 107, load-carrying crossbar slideway; 108, roller slideway; 2, horizontal telescopic frame body; 201, hollow frame body; 202, middle frame body; 203, positioning hole; 4, load-carrying crossbar; 401, flat long bar; 402, hollow flat square tube; 403, long strip-shaped slideway; 404, fixed pin; 5, two-link rod; 6, U-shaped buckle; 7, fixed vertical shaft; 8, sliding vertical shaft; 801, optical axis; 802, nut; 803, roller; 9, stop block; 10, connecting steel sleeve; 11, anti-detachment roller; 12, stop block; 14, positioning pin; 15, outer side pin hole of the rear-segment stacked frame plate.

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. All other obtained drawings are within the scope of the protection requirements of the present utility model. Specific embodiments

[0025] The following is combined with Figures 1-8, the content of the present utility model will be described in detail through specific embodiments. Embodiment

[0026] A stacked telescopic luggage rack for the top layer of an automobile, including stacked frame plates 1 arranged correspondingly on the left and right sides, horizontal telescopic frames 2 fixedly arranged at the front and rear ends of the stacked frame plates, and a plurality of load-carrying crossbars 4 that can be telescopically moved left and right between the stacked frame plates on the left and right sides; as Figure 2 . The horizontal telescopic frame includes an intermediate frame 202 and hollow frames 201 sleeved at both ends of the intermediate frame. The intermediate frame and the hollow frames at both ends form a telescopic structure that can move left and right; positioning pins 14 for passing through the intermediate frame and the hollow frames are arranged at both ends of the intermediate frame, and positioning holes 203 corresponding to the positioning pins are also arranged on the intermediate frame and the hollow frames. After the positioning pins are inserted, they are used to fix the front and rear horizontal telescopic frames 2 after moving left and right, preventing the front and rear horizontal telescopic frames 2 from moving left and right; as Figure 1 And Figure 2 . The stacked frame plates are divided into multiple sections by oblique cutting. The multiple sections include a front-section stacked frame plate 101, a plurality of intermediate-section stacked frame plates 102, and a rear-section stacked frame plate 103, as Figure 1 . A through T-shaped slideway 104 is arranged on the upper end surfaces of each section of the stacked frame plates; a through boss 106 is arranged on the inner side of each section of the stacked frame plates, and a through groove 105 corresponding to the boss and capable of being wedged is arranged on the outer side; each section of the stacked frame plates can be slidably stacked inward or slidably unfolded outward by relying on the mutual wedging of the boss and the groove. A load-carrying crossbar chute 107 is also arranged on the inner side of each section of the stacked frame plates; corresponding roller slideways 108 are arranged at the upper and lower positions in the load-carrying crossbar chute, as Figure 4 . The load-carrying crossbar 4 includes a flat long strip column 401 and hollow flat square tubes 402 sleeved at both left and right ends of the flat long strip column; the flat long strip column and the hollow flat square tubes form a left and right telescopic structure; a long strip chute 403 is arranged on the hollow flat square tube; a fixing pin 404 that can slide left and right in the long strip chute is fixedly arranged on the flat long strip column, and the long strip chute cooperates with the fixing pin to limit the telescopic length of the load-carrying crossbar, as Figure 1 . Anti-drop rollers 11 that slide in the roller slideways are arranged at the upper and lower positions of the hollow flat square tube 402; the anti-drop rollers are fixedly connected to the hollow flat square tube through roller shafts; the function of the anti-drop rollers is to ensure that the load-carrying crossbar does not fall off from the stacked frame plates on both sides when moving forward and backward, and at the same time make its movement smoother. Horizontal U-shaped buckles 6 are arranged on the outer sides of the lower parts of each section of the stacked frame plates, and the U-shaped buckles are engaged with the longitudinal bars on the original vehicle roof for fixing the luggage rack to the original vehicle, as Figure 4 And Figure 5。At the rear end of the T-shaped slideway 104 of the front-stage stacked frame plate 101 and each intermediate-stage stacked frame plate 102, a fixed vertical shaft 7 is fixedly arranged; at the front end of the T-shaped slideway of each intermediate-stage stacked frame plate 102 and the rear-stage stacked frame plate 103, a slidable vertical shaft 8 that can move back and forth is also arranged; between the fixed vertical shaft and the slidable vertical shaft on the adjacent-stage stacked frame plate, a connecting steel sleeve 10 for connecting the fixed vertical shaft and the slidable vertical shaft is sleeved. The fixed vertical shaft 7 and the slidable vertical shaft 8 include a smooth shaft 801 with a thread at the upper part, a nut 802 matching the thread, and a roller 803 rotatably connected to the lower part of the smooth shaft; the smooth shaft and the roller are in interference fit; the roller of the fixed vertical shaft is fixed in the T-shaped slideway, and the roller of the slidable vertical shaft can slide back and forth in the T-shaped slideway; the connecting steel sleeve 10 is sleeved on the smooth shafts 801 of the fixed vertical shaft and the slidable vertical shaft; the nut 803 is used to prevent the connecting steel sleeve from moving and falling off, such as Figure 6 and Figure 8 。

[0027] In the T-shaped slideway of each intermediate-stage stacked frame plate and the rear-stage stacked frame plate, a stop block 9 for restricting the moving range of the slidable vertical shaft is arranged. The function of this stop block is to restrict the moving range of the slidable vertical shaft, prevent dislocation and falling off, and perform moving limit, such as Figure 3 and Figure 6 。

[0028] Between each load-carrying cross bar, a two-link 5 for driving the load-carrying cross bar to move back and forth is arranged. This two-link is used to drive a plurality of load-carrying cross bars to be retracted or unfolded synchronously; in the load-carrying cross bar chute 107 near the rear end, a stop block 12 for restricting the sliding range of the load-carrying cross bar 4 is fixedly arranged. On the outside of the rear-stage stacked frame plate, a rear-stage stacked frame plate outer pin hole 15 is also arranged. This rear-stage stacked frame plate outer pin hole cooperates with a positioning pin to position the load-carrying cross bar after unfolding and prevent the load-carrying cross bar from moving; such as Figure 2 。

[0029] When the luggage rack is not in use, each stage of stacked frame plates on both sides are retracted in a stacked state between the rear-stage stacked frame plates 103; a plurality of cross bars such as the load-carrying cross bars are retracted between the front-stage frame plates 101 after stacking. The rear-stage stacked frame plate 103 is clamped on the original vehicle roof longitudinal bar by a U-shaped buckle 6, as shown in Figure 6.

[0030] When the luggage rack needs to be used, the luggage rack is in an initial retracted state, such as Figure 6Push the horizontal telescopic frame body 2 forward. The front stacked frame plate 101 fixedly connected thereto is also pulled forward at the same time. The fixed vertical shaft 7 in the T-shaped slideway on its upper end face also moves forward synchronously, and drives the sliding vertical shaft 8 on the middle stacked frame plate 102 to move under the action of the connecting steel sleeve 10. When the front stacked frame plate is pulled to the joint with the middle stacked frame plate, the sliding vertical shaft 8 on the upper end face of the middle stacked frame plate is also pulled to the stopper 9 by the fixed vertical shaft 7 synchronously. Since the joint surfaces of each section of the stacked frame plate are inclined cut surfaces, here, under the action of the connecting steel sleeve, the fixed vertical shaft and the sliding vertical shaft rotate 90° along the inclined cut surface. The connecting steel sleeve changes from a horizontal one-shaped to a vertical one-shaped, making the stacked frame plates fit perfectly on the inclined surface, and the stacked frame plates change from a stacked state to an unfolded state; as Figure 6 and Figure 3 And so on, the rest of the stacked frame plates are also pulled in the same way until all the stacked frame plates are completely unfolded. When each section of the stacked frame plate is unfolded, its width on both sides expands continuously as it unfolds. Since several cross bars such as the horizontal telescopic frame body 2 and the load-carrying cross bar 4 arranged between the front stacked frame plates are left-right telescopic structures, they also extend left and right continuously as the stacked frame plates on both sides unfold until all the stacked frame plates are unfolded, and the front horizontal telescopic frame body and the load-carrying cross bar also finish extending; then insert the positioning pin 14 into the positioning hole 203 of the front horizontal telescopic frame body 2 to complete the positioning. At this time, several cross bars such as the load-carrying cross bar 4 are all between the front stacked frame plates, as Figure 7 At this time, pull the load-carrying cross bar 4 backward again. Under the action of the connecting rod 5, the rest of the load-carrying cross bars are also pulled and unfolded until they reach the stopper 12 at the limit position. Then insert the positioning pin into the outer pin hole 15 of the rear stacked frame plate to fix the load-carrying cross bar 4; under the action of the two connecting rods 5 between the load-carrying cross bars, the other load-carrying cross bars are also fixed synchronously. At the same time, several load-carrying cross bars also automatically lock the engagement between the U-shaped buckles 6 at the lower ends of each section of the stacked frame plate and the original vehicle longitudinal rod, and the unfolding is completed, as Figure 2 .

[0031] Perform the opposite operation to retract the luggage rack, as Figure 6 .

[0032] The stacking and unfolding principle of the present utility model:

[0033] During stacking, under the action of an external force, each section of the stacked frame plate is driven by the fixed vertical shaft and the sliding vertical shaft in the T-shaped slideway on the upper end face of each section of the stacked frame plate and the connecting steel sleeve between them, and with the action of the inclined cut groove, the stacked frame plate slides backward; during the sliding process, the groove on the outer side of the front section of the stacked frame plate is wedged into the boss on the inner side of the rear section of the stacked frame plate to serve as a track, and the stacking is completed in sequence. During the stacking process, the front horizontal telescopic frame body and the load-carrying cross bar will contract accordingly to adapt to the continuously shrinking horizontal dimension of the stacked frame plate due to stacking.

[0034] When unfolded, under the action of external force, each section of the stacked frame plate is driven by the fixed vertical shaft and the sliding vertical shaft in the T-shaped slideway on the upper end face of each section of the stacked frame plate and the connecting steel sleeve between them, so that the stacked frame plate moves forward. During this process, the groove on the outer side of the previous section of the stacked frame plate engages with the convex platform on the inner side of the next section of the stacked frame plate and slides forward, and gradually disengages from the convex platform until the previous section of the stacked plate moves to the beveled slope of the next section of the stacked plate and completely disengages from the convex platform. At this time, under the action of the fixed vertical shaft, the sliding vertical shaft and the connecting steel sleeve between them, each section of the stacked frame plate fits on the beveled slope. During the unfolding process, the transverse telescopic frame body and the load-carrying cross bar at the front end will be stretched left and right accordingly to adapt to the continuously expanding transverse dimension of the stacked frame plate due to unfolding.

[0035] Usage method of the present utility model:

[0036] The luggage rack of the present utility model is usually in a retracted and contracted state. When installation is required, stretch the luggage rack in the retracted and contracted state left and right to fit the width of the original vehicle roof longitudinal bar. Then lift the luggage rack onto the roof, and snap the U-shaped buckles at the lower ends of the two side stacked frame plates onto the original vehicle roof longitudinal bar. Insert the positioning pin into the positioning hole on the right side of the transverse telescopic frame body at the rear end to complete the width positioning and also lock the engagement of the rear U-shaped buckle with the roof longitudinal bar. Push the transverse telescopic frame body at the front end forward to sequentially unfold the stacked frame plates. After the stacked frame plates are unfolded, insert the positioning pin into the positioning hole on the right side of the transverse telescopic frame body at the front end. At this time, the front U-shaped buckle is also synchronously locked onto the vehicle roof longitudinal bar. At this time, the luggage rack has been unfolded, and several load-carrying cross bars are all concentrated at the front ends of the two side stacked frame plates after unfolding. Then pull the first load-carrying cross bar at the rear end backward. Under the action of the connecting rod, the remaining load-carrying cross bars are pulled and unfolded until they move to the position of the cross bar slideway stop block; then insert the positioning pin into the pin hole on the outer side of the rear section of the stacked frame plate to fix the load-carrying cross bar. Under the action of the connecting rod, several cross bars are also fixed in four directions of front, rear, left, and right. At this time, each U-shaped buckle is also synchronously locked onto the roof longitudinal bar under the action of the load-carrying cross bar, and the luggage rack is completely unfolded and fixed.

[0037] When retraction is required, pull out the positioning pin on the right side of the transverse telescopic frame body at the front end of the luggage rack, and then pull out the positioning pin in the pin hole on the outer side of the rear section of the stacked frame plate. Push each load-carrying cross bar forward towards the front end of the luggage rack so that the cross bars are retracted inside the front section of the stacked frame plate; then, push the transverse telescopic frame body at the front end backward, and the stacked frame plates start to stack. The transverse telescopic frame body and the load-carrying cross bar at the front end are also synchronously pushed and laterally contracted until each section of the stacked frame plate is stacked and several load-carrying cross bars are also retracted. At this time, the luggage rack is in a retracted state and has moved to the rear of the roof, avoiding the skylight so that the skylight can function properly.

[0038] When disassembly is required, pull out the positioning pin on the right side of the horizontally telescopic frame at the rear end. At this time, the positioning function of the horizontally telescopic frame at the rear end and the locking function of the U-shaped clamp on the original vehicle roof longitudinal bar disappear. Since the load-carrying crossbars between the horizontally telescopic frames at the front and rear ends of the luggage rack and the stacked frame plates on both sides have the function of left and right telescoping, the stacked frame plates at the rear sections on both sides can be pushed inward. The U-shaped buckles at the lower ends of the stacked frame plates on both sides will then disengage from the original vehicle roof longitudinal bar, and at this time, the luggage rack can be removed. For the removed luggage rack, the stacked frame plates on both sides can be further pushed inward to continue contraction until it can no longer be contracted. At this point, the disassembly and contraction of the luggage rack are completed. The contracted luggage rack becomes compact and can be fixedly stored in a certain place or placed in the vehicle trunk for carrying as a spare.

Claims

1. A stackable telescopic roof rack for an automobile, characterized in that: It includes stacked frame plates arranged correspondingly on the left and right sides and a horizontally telescopic frame body fixedly arranged at the front and rear ends of the stacked frame plates; a through T-shaped slideway is provided at the upper part of the stacked frame plates; a through boss is provided on the inner side of the stacked frame plates; a groove corresponding to and engageable with the boss is provided on the outer side of the stacked frame plates; a load-carrying crossbar chute is also provided on the inner side of the stacked frame plates; corresponding roller chutes are provided at the upper and lower positions in the load-carrying crossbar chute; a horizontally arranged U-shaped buckle is provided at the lower outer side of the stacked frame plates; the stacked frame plates are of a multi-section structure, including a front-section stacked frame plate, a plurality of middle-section stacked frame plates and a rear-section stacked frame plate; a number of load-carrying crossbars that can be telescopically moved left and right are provided between the stacked frame plates on the left and right sides; anti-disengagement rollers that slide in the roller chutes are arranged at the upper and lower positions at both ends of the load-carrying crossbars; a two-link for driving the load-carrying crossbars to move back and forth is arranged between the load-carrying crossbars; a fixed vertical shaft is fixedly arranged at the rear end of the T-shaped slideway of the front-section stacked frame plate and the middle-section stacked frame plates; a slidable vertical shaft that can move back and forth is also provided at the front end of the T-shaped slideway of the middle-section stacked frame plates and the rear-section stacked frame plates; a connecting steel sleeve for connecting the fixed vertical shaft and the slidable vertical shaft is sleeved between the fixed vertical shaft and the slidable vertical shaft on the adjacent-section stacked frame plates.

2. The stacked telescopic luggage rack for the top layer of an automobile according to claim 1, wherein: The horizontally telescopic frame body includes a middle frame body and hollow frame bodies sleeved at both ends of the middle frame body; positioning pins for passing through the middle frame body and the hollow frame bodies are arranged at both ends of the middle frame body; positioning holes corresponding to the positioning pins are arranged on the middle frame body and the hollow frame bodies.

3. The stacked telescopic luggage rack for the top layer of an automobile according to claim 1, wherein: The load-carrying crossbar includes a flat long strip-shaped column body and hollow flat square tubes sleeved at the left and right ends of the flat long strip-shaped column body; a long strip-shaped chute is arranged on the hollow flat square tube; a fixed pin that can slide left and right in the long strip-shaped chute is fixedly arranged on the flat long strip-shaped column body.

4. The telescopic stacked luggage rack for the top layer of an automobile according to claim 1, wherein: The fixed vertical shaft and the slidable vertical shaft include a smooth shaft with a thread at the upper part, a nut matching the thread and a roller rotatably connected to the lower part of the smooth shaft; the smooth shaft and the roller are in interference fit; the roller of the fixed vertical shaft is fixed in the T-shaped slideway, and the roller of the slidable vertical shaft can slide back and forth in the T-shaped slideway; the connecting steel sleeve is sleeved on the smooth shafts of the fixed vertical shaft and the slidable vertical shaft.

5. The stacked telescopic roof luggage rack for an automobile according to claim 1, characterized in that: The stacked frame plates are divided into a multi-section structure in an oblique cutting manner.

6. The stacked telescopic roof rack for an automobile according to claim 1, wherein: A stop block for restricting the front and rear sliding ranges of a number of load-carrying crossbars is fixedly arranged in the load-carrying crossbar chute near the rear end.

7. The telescopic stackable roof rack for vehicle according to claim 1, characterized in that: Stop blocks for restricting the moving ranges of the slidable vertical shafts are arranged in the T-shaped slideways of the middle-section stacked frame plates and the rear-section stacked frame plates.

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