Luggage rack tolerance adjuster

Abstract

The utility model discloses a luggage rack tolerance regulator, the upper portion inboard of cylinder is provided with annular boss, positioning sleeve tight cooperation fixed sleeve is located cylinder outside, is provided with the limit dog of the L shape that stretches upwards respectively in the lower part of positioning sleeve's left and right sides, is provided with the matched support on the upper portion of positioning sleeve, and this matched support is located respectively in the front and back sides of limit dog, is provided with the limit board that stretches outward respectively on this matched support, is provided with internal thread on the inboard wall of cylinder, the adjusting screw rod is through the screw rotation and is located on the internal thread of cylinder, is provided with annular limit seat on the bottom of adjusting screw rod, is seted up in the adjusting through -hole of adjusting screw rod, is provided with the snap spring in this adjusting through -hole, the utility model has the advantages of: not needing special fixed torque electric spanner, also can complete the installation of this tolerance regulator, and assembly is more convenient and fast, and need not be restricted by tool again.

Description

Technical Field

[0001] This utility model relates to the technical field of tolerance adjusters, and more specifically to the technical field of tolerance adjusters for luggage racks. Background Technology

[0002] A car roof rack is a support frame installed on the top of a vehicle to secure luggage. It is commonly used on station wagons, SUVs, and MPVs. A car roof typically consists of three layers of sheet metal: the outermost roof panel, the innermost floor panel, and the load-bearing plate between the outer and inner floor panels. To prevent deformation of the outer roof panel under load, a support device is installed between the outer roof panel and the load-bearing plate to secure the roof rack and transfer its load to the load-bearing plate. Since the distance between the outer roof panel and the load-bearing plate varies between different vehicles, this support device also needs to be height-adjustable to ensure its height matches the distance between the two panels, thus accommodating tolerances.

[0003] Chinese utility model patent application number 201721186633.1 discloses an externally mounted tolerance absorber. During installation, this externally mounted tolerance absorber is first placed between the outer top plate and the load-bearing plate, and pre-positioned by limiting plates and limiting claws on both sides of the outer top plate. Then, the height of the externally mounted tolerance absorber is adjusted by rotating the adjusting screw using a constant torque electric wrench, so that the bottom of the adjusting screw abuts against the load-bearing plate to achieve internal support. The luggage rack is then supported on the externally mounted tolerance absorber through its bottom fulcrum. However, this externally mounted tolerance absorber has the following shortcomings: First, during installation, the adjusting screw can only be adjusted and rotated with the assistance of a constant torque electric wrench, limiting the tools available for installation; second, during transportation, under vibration, the adjusting screw may rotate freely inside the cylinder, causing it to become stuck inside or detach from the cylinder, affecting normal assembly and use. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings by providing a luggage rack tolerance adjuster that is easy and quick to assemble, not limited by tools, and can ensure the normal assembly and use of the product.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] The luggage rack tolerance adjuster consists of a cylindrical body, an adjusting screw, and a positioning sleeve. An annular boss is provided on the upper inner side of the cylindrical body. The positioning sleeve is tightly fitted and fixed to the outer side of the cylindrical body. L-shaped limiting claws extending upwards are respectively provided on the lower left and right sides of the positioning sleeve. A pair of supports are provided on the upper part of the positioning sleeve, located on the front and rear sides of the limiting claws. Limiting plates extending outwards are provided on each of the paired supports. An internal thread is provided on the inner wall of the cylindrical body. The adjusting screw is screwed onto the internal thread of the cylindrical body. An annular limiting seat is provided at the bottom of the adjusting screw. An adjusting through hole is provided inside the adjusting screw, and a retaining spring is installed within the adjusting through hole.

[0007] Preferably, the retaining ring is composed of an open upper ring frame and a lower ring frame, and an inwardly curved spring piece is vertically arranged between the upper ring frame and the lower ring frame.

[0008] Preferably, the open-shaped upper and lower ring frames are both regular polygonal structures.

[0009] Preferably, the inwardly bent spring is located at the straight edge of the regular polygon of the upper and lower ring frames.

[0010] Preferably, the lower surface of the positioning sleeve is provided with a downwardly curved elastic piece, and the annular limiting seat has an opening corresponding to the elastic piece.

[0011] Preferably, the upper outer side of the cylinder is provided with anti-rotation teeth.

[0012] Preferably, the upper part of the limiting claw is inclined to the outside of the positioning sleeve.

[0013] Preferably, the outer end of the limiting plate is provided with positioning claws.

[0014] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0015] 1. By setting a retaining ring in the adjustment through hole, the torque can be transmitted by the retaining ring, and the installation of this tolerance adjuster can be completed without the need for a special torque electric wrench. The assembly is more convenient and faster and is no longer limited by tools.

[0016] 2. By setting a downward-curving elastic piece on the lower surface of the positioning sleeve to cooperate with the corresponding opening on the annular limiting seat, the arbitrary rotation of the adjusting screw can be effectively restricted during transportation, avoiding jamming or loosening, thereby ensuring the normal assembly and use of the product.

[0017] 3. The L-shaped limit claw increases the distance between the upper part of the limit claw and the positioning sleeve, making it easier for the limit claw to retract. This is very beneficial for the limit claw to be inserted into the upper mounting hole. In addition, the L-shaped limit claw has a fast rebound speed. After the limit claw is inserted between the outer top plate and the load-bearing plate, it can quickly rebound, which improves the convenience of installation. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention after being flipped over;

[0021] Figure 4 This is a schematic diagram of the snap ring in this utility model. Detailed Implementation

[0022] Depend on Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the luggage rack tolerance adjuster consists of a cylindrical body 1, an adjusting screw 2, and a positioning sleeve 3. An annular boss 4 is provided on the upper inner side of the cylindrical body 1. The positioning sleeve 3 is tightly fitted and fixedly sleeved on the outer side of the cylindrical body 1. Anti-rotation teeth 5 are also provided on the upper outer side of the cylindrical body 1. These teeth prevent the cylindrical body 1 from moving vertically within the positioning sleeve 3 and also prevent the cylindrical body 1 from rotating within the positioning sleeve 3, thus improving the stability of the cylindrical body 1 within the positioning sleeve 3. The lower left and right sides of the positioning sleeve 3... Each cylinder 1 is provided with an L-shaped limiting claw 6 extending upwards. The upper part of the limiting claw 6 is inclined outwards towards the positioning sleeve 3. The upper part of the positioning sleeve 3 is provided with a pair of supports 7, which are located on the front and rear sides of the limiting claw 6, respectively. On each pair of supports 7, a limiting plate 8 extending outwards is provided. A positioning claw 9 is provided at the outer end of each limiting plate 8. The inner wall of the cylinder 1 is provided with an internal thread. The adjusting screw 2 is screwed onto the internal thread of the cylinder 1. The bottom of the adjusting screw 1 is provided with an annular limiting seat 10. During transportation, to prevent the adjusting screw 2 from rotating freely inside the cylinder 1, a downward-curving elastic piece 11 is provided on the lower surface of the positioning sleeve 3. An opening 12 corresponding to the elastic piece 11 is provided on the annular limiting seat 10. The elastic piece 11 is located within the opening 12, effectively preventing the adjusting screw 2 from rotating freely. To facilitate assembly and use of this product, an adjusting through hole 13 is provided inside the adjusting screw 2. A retaining spring 14 is provided inside the through hole 13. The retaining spring 14 is composed of an upper ring frame 15 and a lower ring frame 16 with an open shape. An inwardly bent spring piece 17 is vertically arranged between the upper ring frame 15 and the lower ring frame 16. The upper ring frame 15 and the lower ring frame 16 are respectively in the shape of regular polygons. The inwardly bent spring piece 17 is located at the straight edge of the regular polygon of the upper ring frame 15 and the lower ring frame 16. In this way, it can be assembled and used with a regular electric wrench without the need for a special constant torque electric wrench, making assembly more convenient and faster.

Claims

1. A luggage rack tolerance adjuster, characterized in that: It consists of a cylindrical body, an adjusting screw, and a positioning sleeve. The upper inner side of the cylindrical body is provided with an annular boss. The positioning sleeve is tightly fitted and fixed on the outer side of the cylindrical body. On the lower left and right sides of the positioning sleeve, there are L-shaped limiting claws extending upwards. On the upper part of the positioning sleeve, there are a pair of supports, which are located on the front and rear sides of the limiting claws respectively. On the pair of supports, there are limiting plates extending outwards. The inner side wall of the cylindrical body is provided with an internal thread. The adjusting screw is screwed onto the internal thread of the cylindrical body. An annular limiting seat is provided at the bottom of the adjusting screw. An adjusting through hole is opened inside the adjusting screw, and a retaining spring is provided in the adjusting through hole.

2. The luggage rack tolerance adjuster according to claim 1, characterized in that: The retaining ring is composed of an open upper ring frame and a lower ring frame, with an inwardly curved spring piece vertically arranged between the upper ring frame and the lower ring frame.

3. The luggage rack tolerance adjuster according to claim 2, characterized in that: The upper and lower ring frames, which are open in shape, are both regular polygonal structures.

4. The luggage rack tolerance adjuster according to claim 3, characterized in that: The inwardly bent spring is located at the straight edge of the regular polygon of the upper and lower ring frames.

5. The luggage rack tolerance adjuster according to claim 1, 2, 3 or 4, characterized in that: The lower surface of the positioning sleeve is provided with a downward-curving elastic piece, and the annular limiting seat has an opening corresponding to the elastic piece.

6. The luggage rack tolerance adjuster according to claim 5, characterized in that: Anti-rotation teeth are provided on the upper outer side of the cylinder.

7. The luggage rack tolerance adjuster according to claim 5, characterized in that: The upper part of the limiting claw is inclined to the outside of the positioning sleeve.

8. The luggage rack tolerance adjuster according to claim 5, characterized in that: The outer ends of the limiting plate are respectively provided with positioning claws.

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