Folding cover applicable to carriage

The present invention provides a folding cover applicable to a carriage. The folding cover includes a frame, a first shaft, a second shaft, a fixing device and a shielding piece, wherein the frame includes two first frame borders and two second frame borders. The first frame borders and the second frame borders are connected end to end, wherein the second frame borders can be split into three sections. Two ends of the first shaft are detachably inserted into the two second frame borders respectively so that the frame is folded along the first shaft. Two ends of the second shaft are detachably inserted into the two second frame borders respectively so that the frame is folded along the second shaft. The fixing device is disposed at the frame, and the fixing device is used to clamp an edge of the carriage. The shielding piece covers the frame.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No(s). 201710862620.X filed in People's Republic of China on Sep. 21, 2017, the entire contents of which are hereby incorporated by reference.

BACKGROUND OF THE INVENTION

Field of the Invention

This invention relates to the field of automotive accessory manufacture and, more particularly, to a folding cover applicable to a carriage/box.

Description of the Related Art

In general, models with open carriages/boxes need to be equipped with three-folding covers or folding tops, such that to make it convenient for covering and protecting the goods in the carriage, and to prevent the goods in the carriage from being damaged by sun and rain. Take a pickup truck as an example, the pickup truck is a model with a car head cab, and with an open carriage at the same time. Relying on its beautiful appearance, car-like comfort, strong power, low prices, as well as the practicability of capable of carrying people and carrying goods, pickup truck is welcomed by a plurality of consumers. However, as the carriage of pickup truck is open, the articles in the truck are easily damaged by sun and rain. Although it is possible to avoid above problems by installing a three-folding cover or a till in an open carriage, the installation of the three-folding cover or foldable till on the current market is complicated, and the structure is rough, which is inconvenient to use. And the rough structure of the three-folding cover or till will generate a relatively great resistance during the process of driving, which will affect the user's experience.

Secondly, the sealing property and water resistance property of the existing three-folding cover are not good. In the rainy day, the rain is easy to penetrate into the interior of the carriage, resulting in moisture or even damage of the goods in the carriage. What's more, the rain into the three-folding cover itself and the interior of the carriage will further lead to the corresponding corrosion of metal parts, especially structures like active hinges which act as a role of connection. The corrosion of metal parts will seriously affect the use of the three-folding cover.

What's more, some of the existing three-folding covers or tills take up a relatively large space even in the folded state, which is inconvenient to carry and store.

BRIEF SUMMARY OF THE INVENTION

The objective of the present invention is to provide a folding cover applicable to a carriage/box, which solves the problems of being rough in structure, complex in installation and poor in water resistance of the folding cover in the prior art.

To solve the above problems, the present invention provides a folding cover applicable to a carriage/box. The folding cover includes a frame, a first shaft, a second shaft, a fixing device and a shielding piece, wherein the frame includes two first frame borders and two second frame borders. The two first frame borders are opposite to each other, and the two second frame borders are opposite to each other. The first frame borders and the second frame borders are connected end to end, and each of the two second frame borders includes a first section, a second section and a third section. One end of the first section is detachably inserted into one first frame border, one end of the third section is detachably inserted into the other first frame border, and the second section is located between the first section and the third section. Two ends of the first shaft are detachably inserted into the two second frame borders, respectively, and the other end of the first section is detachably inserted into one end of the second section through the first shaft, such that the frame is folded along the first shaft. Two ends of the second shaft are detachably inserted into the two second frame borders, respectively, and the other end of the second section is detachably inserted into the other end of the third section through the second shaft, such that the frame is folded along the second shaft. The fixing device is disposed at the frame, and the fixing device is used to clamp an edge of the carriage. The shielding piece covers the frame.

According to one embodiment of the present invention, the first shaft may include a first connecting rod and two first connecting assemblies, and the two first connecting assemblies may be located at two ends of the first connecting rod, respectively. Two ends of the first connecting rod may have a first square hole and two first round holes, respectively, and the two first round holes may be located at two sides of the first square hole, respectively. The first connecting assembly may include a first plugging joint and two first rotary joints, and the first plugging joint may have a first square positioning block and two first positioning protrusions. The first square positioning block may be inserted into the first square hole, and the two first positioning protrusions may be located at two sides of the first square positioning block, respectively. The first rotary joint may be provided with a first frame border fixing block, a first rotating cylinder and a first limiting platform, the first limiting platform may be located at one side of the first rotary joint, the first rotating cylinder may extend from the first limiting platform, and the first frame border fixing block may be located at the other side of the first rotary joint. The respective first limiting platform of the two first rotary joints may be rotatably clamped with two first positioning protrusions, respectively, and the respective first rotating cylinder of the two first rotary joints may be inserted into the two first round holes, respectively. Wherein the first frame border fixing block of one of the first rotary joints may be inserted into the first section, and the first frame border fixing block of the other first rotary joint may be inserted into the second section.

According to one embodiment of the present invention, the second shaft may include two second connecting rods and two second connecting assemblies, and two ends of each of the second connecting rods may have a second square hole and a second round hole, respectively. The two second connecting rods may be parallel, and the two second connecting assemblies may be located at two ends of the two second connecting rods, respectively. The second connecting assembly may include a second plugging joint and two second rotary joints, and the second plugging joint may have two second square positioning blocks and two second positioning protrusions. The two second square positioning blocks may be disposed in parallel and spaced apart, the two second square positioning blocks may be inserted into the second square hole of the two second connecting rods, respectively, and the two second positioning protrusions may be located at opposite two sides of the second plugging joint, respectively. The second rotary joint may be provided with a second frame border fixing block, a second rotating cylinder and a second limiting platform. The second limiting platform may be located at one side of the second rotary joint, the second rotating cylinder may extend from the second limiting platform, and the second frame border fixing block may be located at the other side of the second rotary joint. The respective second limiting platform of the two second rotary joints may be rotatably clamped with the two second positioning protrusions, respectively, and the respective second rotating cylinder of the two second rotary joints may be inserted into the second round hole of the two second connecting rods, respectively. Wherein the second frame border fixing block of one of the second rotary joints may be inserted into the second section, and the second frame border fixing block of the other second rotary joint may be inserted into the third section.

According to one embodiment of the present invention, the fixing device may include a sliding clamp block, a rotary rod and a buckle. The sliding clamp block may be slidably connected with the second frame border, the rotary rod may be reversibly connected with the sliding clamp block, and the buckle may be connected with one end of the rotary rod. The buckle may have a clamping part, and one side of the clamping part may have a wavy surface to clamp an edge of the carriage.

According to one embodiment of the present invention, the sliding clamp block may be provided with a T-shaped clamping groove. The rotary rod may be a T-shaped rod, and the rotary rod may clamp at the T-shaped clamping groove to operatively flip along the T-shaped clamping groove.

According to one embodiment of the present invention, the fixing device may further include a triangle nut, and the buckle may be provided with a threaded through hole. One end of the rotary rod may be provided with threads and be inserted into the threaded through hole of the buckle and the triangle nut.

According to one embodiment of the present invention, the folding cover may include a strengthening device. The strengthening device may include a strengthening rod piece, two sliding mechanisms, two roundhead screw stems and two wrenches. Two ends of the strengthening rod piece may be movably connected with the two second frame borders, and the two sliding mechanisms may be slidably disposed at two ends of the strengthening rod piece, respectively. One side of the sliding mechanism may be provided with a fixing groove and a sliding groove. The fixing groove and the sliding groove may be perpendicular and communicated with each other. The respective one end of the two roundhead screw stems may be movably confined to the fixing groove of the two sliding mechanisms, respectively, the two roundhead screw stems may operatively flip from the fixing groove to the sliding groove and move along the sliding groove, respectively, and the two wrenches may be threadably connected with the respective one end of the two roundhead screw stems to lock the position of the two sliding mechanisms, respectively.

According to one embodiment of the present invention, the strengthening rod piece may include a strengthening rod and two rails. Two ends of the strengthening rod may be provided with a-shaped socket, respectively, and one end of the two rails may be movably connected with the two second frame borders, respectively. The other end of the two rails may be provided with a-shaped fixture block, respectively, and the-shaped fixture block of the two rails may be inserted into the-shaped through hole of two ends of the strengthening rod, respectively.

According to one embodiment of the present invention, the sliding mechanism may include a metal slider and a plastic inside slider, and the plastic inside slider may be nested inside the metal slider.

According to one embodiment of the present invention, the folding cover may include a first waterproof piece and a second waterproof piece, and the first waterproof piece may be disposed at the first frame border. The first waterproof piece may have two first waterproof strips which is shark fin shape, and the two first waterproof strips may be distributed at intervals. The second waterproof piece may be disposed at the second frame border and may have two second waterproof strips which are D-shaped. The two second waterproof strips may be disposed side by side.

Compare with the prior art, the present technical solution has following advantages:

The present invention achieves the connection and folding of the first and second sections of the second frame border through the detachable insertion of the first shaft; likewise, the present invention achieves the connection and folding of the second section and the third section by the detachable insertion of the second shaft, such that not only the basic folding function of the folding cover is achieved, but also the first frame border, the second frame border, the first shaft and the second shaft of the whole folding cover are all made to be completely detached and separated out to become independent products. Wherein, the second frame border can be split into three sections, which is convenient for production and maintenance. The whole folding cover is small in size and convenient for transport and storage after detachment and packing. The installation mode of insertion is relatively simple which is convenient for users to use, avoiding the cumbersome installation of using metal hinge joint pieces for the conventional folding cover.

By disposing two first connecting assemblies of the first shaft, the present invention not only realizes the insertion of the first shaft and the portion between the first section and the second section of the second frame border, but also enables the rotary folding between the first section and the second section. Specifically, the first connecting rod is fixed by the first plugging joint of the first connecting assembly, and the connection and the rotary folding function between the first section and the second section are achieved by the first rotary joint connected with both sides of the first plugging joint. In this way, the installation of the first connecting assembly is simple, and users only need to align the corresponding position to achieve insertion thus to complete the installation of the folding cover. This avoids the cumbersome installation of using hinge joint method adopted by the traditional folding cover. In addition, through the insertion mode provided by the present invention, the second frame border and the first shaft of the folding cover are completely detached and separated, and the subcomponents of the first shaft can be replaced and independently produced, which make it convenient for users to maintain.

In the present invention, the width of the second shaft can be greater than the width of the first shaft by disposing two second connecting rods in parallel, such that the frame can further fold along the second shaft after folding along the first shaft, and the second shaft having a wider width than the first shaft can ensure that the folding extent between the second section and third section is large enough. In addition, through the second plugging joint of the second connect assembly, the two parallel second connecting rods are fixed together side by side. Through the two second rotary joints, the connection and rotary folding of the second shaft and the portion between the second section and the third section are achieved, respectively. The installation mode of the second connect assembly is simple which can be completed by simple insertion, and the second frame border and the second shaft can be completely detached and separated, and the subcomponents of the second shaft can be replaced and independently produced, which make it convenient for users to maintain.

The present invention can fix the folding cover to the carriage with different widths and different models by disposing two sliding mechanisms of the strengthening rod assembly. Through adjusting the position of the two sliding mechanisms on the strengthening rod and holding the sliding structure against the sidebar of the carriage, the folding cover can be fixed to the carriage with different widths. In this way, the folding cover provided by the present invention can be applied to the carriage with different models. For different carriages, it does not need to change the structure of the folding cover itself nor to customize the folding cover with different widths, which is practical and convenient.

DETAILED DESCRIPTION OF THE INVENTION

The following description is only for the purpose of disclosing the present invention so that those skilled in the present field will be able to practice the present invention. The following embodiments described are only for instance, and those skilled in the present field can think of other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other alternatives without departing from the spirit and scope of the invention.

Referring toFIG. 1toFIG. 9, the present invention provides a folding cover applicable to a carriage/box, and the folding cover can be installed in different kinds of vehicles with open carriages/boxes to cover and protect articles placed in the carriages. In particular, the folding cover is applicable for installing at the carriage of pickup truck, but the present invention does not limit the application of the folding cover, and the folding cover can also be applied to other models. A folding cover includes a frame10, a first shaft20, a second shaft30, a fixing device40and a shielding piece50.

As shown inFIG. 1andFIG. 2, the frame10is a rectangular frame that matches the carriage, and the frame10includes two first frame borders11and two second frame borders12. Wherein the two first frame borders11are opposite to each other, and the two second frame borders are opposite12to each other. The first frame borders11and the second frame borders12are connected end to end, such that the two first frame borders11and two second frame borders12form a rectangular frame. The size and length-to-width ratio of the frame10can be disposed reasonably according to the size of the carriage.

The second frame borders12include a first section121, a second section122and a third section123. One end of the first section121is detachably inserted into one first frame border11, one end of the third section123is detachably inserted into the other first frame border11, and the second section122is located between the first section121and the third section123. That is, each second frame border12includes three sections, which the first section121, the second section122, and the third section123are sequentially connected; wherein the first section121and the third section123are connected with the two first frame borders11, respectively.

Further, as shown inFIG. 3, the frame10further includes corner joints13, and the number of corner joints13is four. The four corner joints13are located at four corner positions of the frame10to connect the first frame borders11and the second frame borders12. Specifically, the first frame border11and the second frame border12are inserted into two sides of the corner joint13, respectively. Two ends of the first frame border11are provided with a guiding round groove111and a fixed cavity112, respectively, and two ends of the second frame border12are provided with a guiding round groove124and a fixed cavity125. The corner joint13is a quarter circle, and both sides of the corner joint13have a guiding cylinder131and a plug boss132, respectively. The two guiding cylinders131of the corner joint13are inserted into the guiding round groove111of the first frame border11and the guiding round groove124of the second frame border12, respectively. The two plug protrusions132of the corner joint13are inserted into the fixed cavity112of the first frame border11and the fixed cavity125of the second frame border12, respectively. In this way, the connection of the first frame border11with the second frame border12is achieved through the corner joint13.

Further, the side wall of the first frame border11is also provided with a first open through groove113, and the first open through groove113is adjacent to the fixed cavity112. The side wall of the second frame border12is further provided with a second open through groove126, and the second open through groove126is adjacent to the fixed cavity. As shown in theFIG. 3, under the state of use, the first open through groove113and the second open through groove126are located at the bottom of the first frame border11and the bottom of the second frame border12, respectively.

Both ends of the first shaft20are detachably inserted into the two second frame borders12, respectively, and the other end of the first section121of the second frame border12is detachably inserted into one end of the second section122through the first shaft20, such that the frame10is folded along the first shaft20. That is, the first section121and the second section122of each second frame borders12are movably connected through one end of the first shaft20, and two ends of the first shaft20are movably connected with the respective first section121and the second section122of the two second frame borders12, respectively. The first section121and the second section122of each second frame borders12are operatively flipped and folded together along the first shaft20, such that the whole frame10is operatively folded along the first shaft20. The first shaft20includes a first connecting rod21and two first connecting assemblies22, and the two first connecting assemblies22are located at two ends of the first connecting rod21, respectively. The first connect assembly22is not only connected with the end part of two ends of the first connecting rod21, but also plays a role of connecting the first section121with the second section122of the second frame border12together. In other words, the first section121and the second section122of the second frame border12are connected together through the first connect assembly22.

Two ends of the first connecting rod21have a first square hole211and two first round holes212, respectively, and the two first round holes212are located at two sides of the first square hole211, respectively. The first square hole211and two first round holes212are disposed side by side. Optionally, the first square hole211and the first round holes212are all through holes, that is, the first square holes211at both ends of the first connecting rod21are communicated with each other, and two first round holes212at both ends of the first connecting rod21are communicated one to one, such that the whole first connecting rod21is hollow.

Each first connecting assemblies22includes a first plugging joint221and two first rotary joints222, and the first plugging joint221has a first square positioning block2211and two first positioning protrusions2212. The first square positioning block2211is inserted into the first square hole211. Two sides of the first square positioning block2211are provided with a curved guiding curve surface2213, respectively, and the guiding curve surface2213extends outwardly from both sides of the surface of the first square positioning block2211. The first positioning protrusion2212is round, and the two first positioning protrusions2212are located at two sides of the first square positioning block2211, respectively. A limiting notch2214is formed at the area between the guiding curve surface2213and the first positioning protrusion2212.

The first rotary joint222is provided with a first frame border fixing block2221, a first rotating cylinder2222and a first limiting platform2223. The first limiting platform2223is located at one side of the first rotary joint222, the first rotating cylinder2222extends from the first limiting platform2223, and the first frame border fixing block2221is located at the other side of the first rotary joint222.

For one first connect assembly22, the two first rotary joints222are jointed to two sides of the first plugging joint221, respectively. The respective first rotating cylinder2222of the two first rotary joints222are inserted into the two first round holes212, respectively, such that the two first rotary joints222freely rotate within the two first rounds holes212, respectively. The first frame border fixing block2221of one of the first rotary joints222is inserted into the first section121of the second frame border12, and the first frame border fixing block2221of the other first rotary joint222is inserted into the second section122of the second frame border12. Thus, one first connect assembly22is connected to one end of the first connecting rod221, and the first section121and the second section122of one second frame border12are connected together through the first connect assembly22. Similarly, the other first connect assembly22is connected with the other end of the first connecting rod221by the same way, and the first section121and the second section122of the other second frame border12are connected together. Thus, both ends of the first shaft20are movably connected with the two second frame borders12.

When the folding cover needs to be folded, the respective first section121of two second frame borders12are flipped upwards simultaneously, or the respective second section122of the two second frame borders12are flipped upwards simultaneously, such that the first rotary joint222connected between the first section121and the second section122is rotated so that the frame10is folded along the first shaft20. The first section121is superposed upon one side of the second section122.

Both ends of the second shaft30are detachably inserted into the two second frame borders12, respectively, and the second shaft30and the first shaft20are disposed in parallel and spaced apart. The other end of the second section122is detachably inserted into the other end of the third section123through the second shaft30, so that the frame10is folded along the second shaft30. That is, the second section122and the third section123of each second frame borders12are movably connected through one end of the second shaft30, and two ends of the second shaft30are movably connected with the respective second section122and the third section123of the two second frame borders12, respectively. The second section122and the third section123of each second frame borders12are operatively flipped and folded together along the second shaft30so that the whole frame10is operatively folded along the second shaft30.

The second shaft30includes two second connecting rods31and two second connecting assemblies32, and the two second connecting rods are parallel. Two ends of each second connecting rods31have a second square hole311and second round hole312, respectively, and the second square hole311and the second round hole312are disposed side by side. Optionally, the second square hole311and the second round hole312are all through holes, that is, the second square holes311at both ends of the second connecting rod31are communicated with each other, and the second round holes312at both ends of the second connecting rod31are communicated, such that the whole second connecting rod31is hollow.

Two second connecting assemblies32are located at two ends of two second connecting rods31, respectively. Each second connect assembly32includes a second plugging joint321and two second rotary joints322, and the second plugging joint321has two second square positioning blocks3211and two second positioning protrusions3212. Two second square positioning blocks3211are disposed in parallel and spaced apart, and two second square positioning blocks3211are inserted into the respective second square hole311of two second connecting rods31, respectively, such that the two second connecting rods31are fixed together in parallel. Two sides of the second plugging joint321are provided with a curved guiding curve surface3213, respectively. The second positioning protrusion3212is round, and the two second positioning protrusions3212are located at two sides of the second square positioning block3211, respectively. The area between the guiding curve surface3213and the second positioning protrusion3212forms a limiting notch3214.

The second rotary joint322is provided with a second frame border fixing block3221, a second rotating cylinder3222and a second limiting platform3223. The second limiting platform3223is located at one side of the second rotary joint322, the second rotating cylinder3222extends from the second limiting platform3223, and the second frame border fixing block3221is located at the other side of the second rotary joint322.

For a second connect assembly32, the two second rotary joints322are jointed to two sides of the second plugging joint321, respectively. The respective second rotating cylinder3222of the two second rotary joints322are inserted into the second round holes312of two second connecting rods31, respectively, such that the two second rotary joints322freely rotate in the two second rounds holes312, respectively. The second frame border fixing block3221of one of the second rotary joints322is inserted into the second section122of the second frame border12, and the second frame border fixing block3221of the other second rotary joint322is inserted into the third section123of the second frame border12. Thus, one end of the same side of the two second connecting rods321are connected together through one second connect assembly32, and the second section122and the third section123of one second frame border12are connected together through the second connect assembly32. Similarly, the other second connect assembly32connects together the other end of the same side of the two second connecting rods321by the same way, and the second section122and the third section123of the other second frame border12are connected together. Thus, both ends of the second shaft30are movably connected with the two second frame borders12.

When the folding cover needs to be folded, the respective second section122of the two second frame borders12are flipped upwards simultaneously, or the respective third section123of the two second frame borders12are flipped upwards simultaneously, such that the second rotary joint322connected between the second section122and the third section123is rotated so that the frame10is folded along the second shaft30. The second section122is superposed upon one side of the third section123.

The fixing device40is disposed at the second frame border12of the frame10and is used to fix the second frame border12and the sidebar of the carriage together, such that the folding cover is fixed at the carriage more securely. In the present embodiment, the folding cover includes four fixing devices40, and the four fixing devices40are respectively disposed at two second frame borders12at interval with two as one group. In other embodiment, the number of the fixing device40is other values such as two or six, and the present invention does not limit the number of the fixing device40. The fixing device40includes a sliding clamp block41, a rotary rod42and a buckle43.

The sliding clamp block41is slidably connected with the second frame border12, such that the sliding clamp block41operatively slid along the second frame border12. The sliding clamp block41is provided with a T-shaped clamping groove411.

The rotary rod42is reversibly connected with the sliding clamp block41. The rotary rod42is a T-shaped rod, and one end of the rotary rod42has threads. The rotary rod42is clamped at the T-shaped clamping groove411to operatively flipped along the T-shaped clamping groove411. In other words, in the direction shown inFIG. 6, the rotary rod42can rotate from the horizontal plane to the vertical plane along the T-shaped clamping groove411, or from the vertical plane to the horizontal plane.

The buckle43is connected with one end of the rotary rod41. The buckle43is provided with a threaded through hole432, and one end of the rotary rod41is inserted into the threaded through hole432of the buckle43, that is, the buckle43and the threaded end of the rotary rod41are threaded connected. The buckle43has a clamping part432, and one side of the clamping part432has a wavy surface to clamp an edge of the carriage.

In practical operation, users adjust the position of the fixing device40at the second frame border12and the spacing between two adjacent fixing devices40through the sliding clamp block41. The rotary rod42is flipped from the sliding clamp block41, such that the buckle43is just in a horizontal state and the clamping part432of the buckle43clamps the sidebar of the carriage. Thus, the fixation of the folding cover with the sidebar of the carriage is achieved through the fixing device40. Wherein the wavy surface of one side of the clamping part432plays a role of anti slip, which increases the frictional force between the clamping part432and the sidebar of the carriage, making the buckle43of the fixing device40clamp the edge of the carriage more firmly.

Further, the fixing device40further includes a triangle nut44. The triangle nut44is fixed at one end of the rotary rod42, and the triangle nut44is located at one side of the buckle43. That is, one end of the rotary rod42is provided with threads and is inserted into the threaded through hole432of the buckle43and the triangle nut44. Both the triangle nut44and the buckle43are fixed to the same end of the rotary rod42. The triangle nut44plays a role of tightening the buckle43, such that the buckle43can lock the sidebar of the carriage more closely; in addition, users can loosen the triangle nut44at first, and then release the lock between the buckle43and the sidebar of the carriage to adjust the position of the fixing device40.

The shielding piece50covers the frame10to play a role of covering and protecting articles in the carriage. In the present embodiment, the shielding piece50adopts a cortical material so that the shielding piece50can not only be dust proof and sun proof, but also has a waterproof function to prevent the articles in the carriage from being caught in the rain. In other embodiments, the shielding piece50adopts other material, such as cloth, and the material of the shielding piece50of the present invention is not limited. As shown inFIG. 7, the shape and size of the shielding piece50are appropriately disposed according to the size of the frame10, and the edge of the shielding piece50is fixed at the first frame border11and the second frame border12around the frame10.

The folding cover further includes a strengthening rod assembly60, and the two ends of the strengthening rod piece60are fixed at two second frame borders12, respectively. The strengthening rod piece60is parallel to the first shaft20and the second shaft30, and is located between one of the first frame borders11and the first shafts20. The strengthening rod piece60plays a role of strengthening the fixation function of the frame10. The strengthening rod piece60includes a strengthening rod61, two sliding mechanisms62, two roundhead screw stems63and two wrenches.

Two ends of the strengthening rod61are movably connected with the two second frame borders12to adjust the position of the strengthening rod61. Specifically, the strengthening rod61includes a rod piece611and two rails612, and two ends of the rod piece611are provides with a-shaped socket6111, respectively. One end of the two rails612are movably connected with two second frame borders12, respectively, and the other end of the two rails612are provided with a-shaped fixture block6121, respectively. The respective-shaped fixture block of the two rails are inserted into the-shaped socket6111located at two ends of the rod piece612, respectively. In other words, the two rails612are inserted into two ends of the rod piece611, respectively, and the rod piece611is movably connected with the two second frame borders12through two rails612. Both sides of the rail612are provided with sliding slots6122, respectively.

The two sliding mechanisms62are slidably disposed at two ends of the strengthening rod61, respectively. In particular, the sliding mechanism62is nested at the rail612of the strengthening rod61, and the sliding mechanism62can slide along the rail612. That is, by adjusting the position of the sliding mechanism62with respect to the strengthening rod61, it is possible to adjust the spacing between the two sliding mechanisms62. One side of the sliding mechanism62is provided with a fixing groove621and a sliding groove622. The fixing groove621and the sliding groove622are vertical and communicated.

Further, the sliding mechanism62includes a metal slider623and a plastic inside slider624. The interior of the metal slider623has a first cavity6231, and the top of the metal slider623is provided with a first through groove6232. The first through groove6232and the first cavity6231are communicated. The top of the metal slider623is provided with two fixture blocks6233, and the two fixture blocks6233are located at two sides of the first through groove6232, respectively. One side of the metal slider623is provided with a first groove6234and a second groove6235, and the first groove6234and the second groove6235are vertical and communicated.

The interior of the plastic inside slider624has a second cavity6241, and the top of the plastic inside slider624is provided with a second through groove6242. The second through groove6242and the second cavity6241are communicated. The railway612is inserted into the second cavity6241of the plastic inside slider624, and the plastic inside slider624is sleeved on the rail612to slide along the rail612. The plastic inside slider624is embedded inside the metal slider623. That is, the plastic inside slider624is located in the first cavity6231of the metal slider623, and the metal slider623wraps the plastic inside slider624, such that the metal slider623and the plastic inside slider624are integrally sleeved on the rail612to slide along the rail612. That is to say, the rail612is inserted into the second cavity6241of the plastic inside slider624, and the fixture block6233of the metal slider623is clamped in the sliding slot6122. In practical applications, the metal slider623and the plastic inside slider624are bonded together by glue. One side of the plastic inside slider624is provided with a third groove6243and a fourth groove6244, and the third groove6243and the fourth groove6244are vertical and communicated. The position of the third groove6243of the plastic inside slider624corresponds to the position of the first groove6234of the metal slider623, and the size and shape of the third groove6243match with the first groove6234, such that the first groove6234and the third groove6243two form the fixing groove621. Similarly, the position of the fourth groove6244of the plastic inside slider624corresponds to the position of the second groove6235of the metal slider623, and the size and shape of the fourth groove6244match with the second groove6235such that the second groove6235and the fourth groove6244two form the sliding groove622.

Two roundhead screw stems63are connected with two sliding mechanisms62, respectively. One end of the roundhead screw stem63is provided with threads, and the other end of the roundhead screw stem63is provided with a roundhead body631. The roundhead body631has a roundhead round face6311and a roundhead square face6312. The respective one end of the two roundhead screw stems63are movably confined to the fixing groove621of the two sliding mechanisms62, respectively, and the two roundhead screw stems63are operatively flipped from the fixing groove621to the sliding groove622and move along the sliding groove622, respectively. Specifically, as shown inFIG. 8, one end of the roundhead screw stem63provided with the roundhead body631is confined to the fixing groove621, and the roundhead screw stem63is horizontally fixed to the fixing groove621; and users can first rotate the roundhead screw stem631horizontally from the fixing groove621and then flip the roundhead screw stem631vertically so that the roundhead screw stem631is flipped from the fixing groove621to the sliding groove622, and the roundhead screw stem631is operatively slide along the sliding groove622. Conversely, users can also flip the roundhead screw stem63from the sliding groove622to the fixing groove621according to the opposite operation.

As shown inFIG. 2, two wrenches64are respectively threaded connected with the respective one end of the two roundhead screw stems63to lock the position of the two sliding mechanisms62, respectively. Specifically, the wrench64is connected with one end of the roundhead screw stem63provided with threads, and the wrench64can move along the threads of the roundhead screw stem63to adjust the position of the wrench64on the roundhead screw stem63. By adjusting the position of the wrench64on the roundhead screw stem63and tightening the wrench64, the wrench64is against the strengthening rod61and cannot move, such that the sliding mechanism62is locked to the strengthening rod61, while the position of the sliding mechanism62cannot be moved at this time. Conversely, when the position of the sliding mechanism62need to be changed, users may first reversely loosen the wrench64to unlock the sliding mechanism62, and then slide the sliding mechanism62to the appropriate position. It should be noted that, under the state of use, the wrench64is located below the frame10of the folding cover, thus the wrench64is not seen at the angle shown inFIG. 1, while the wrench64can be seen in the top view shown inFIG. 2.

Further, the folding cover includes a first waterproof piece71and a second waterproof piece72. Wherein the first waterproof piece71is a shark fin adhesive strip and is disposed at the first frame border11. The first waterproof piece71has two first waterproof strips711, and the first waterproof strip711is a sharp fin shape. The two first waterproof strips711are distributed at intervals. The second waterproof piece72is a double D-shaped adhesive strip and is disposed at the second frame border. The second waterproof piece72has two second waterproof strips721which are D-shaped. The two second waterproof strips are disposed side by side.

The first waterproof piece71further includes a first aluminum substrate712and a first rubber substrate713, wherein the first rubber substrate713is vertically jointed to the first aluminum substrate712, and the two first waterproof strips711are jointed to two sides of the first rubber substrate713, respectively. The first rubber substrate713and the first aluminum substrate712are inserted into the first open through groove113of the first frame11. Optionally, the first rubber substrate713is an ethylene-propylene-diene-terpolymer rubber (EPDM) substrate.

The second waterproof piece72further includes a second aluminum substrate722and a second rubber substrate723, wherein the second rubber substrate723is vertically jointed to the second aluminum substrate722, and two second waterproof strips721are jointed to two sides of the second rubber substrate723, respectively. The second rubber substrate723and the second aluminum substrate722are inserted into the second open through groove126of the second frame12. Optionally, the second rubber substrate723is an EPDM substrate.