Ladder assembly and car roof platform device with same

Abstract

The utility model provides a ladder assembly and a car roof platform device with the same. The ladder assembly comprises a framework, a shell and a ladder body. The framework is used for connecting longitudinal rails and / or platform assemblies on the top of a vehicle. The shell comprises a first sub-shell wrapping the framework and a second sub-shell fixedly connected to the front side and / or the rear side of the first sub-shell. The ladder body comprises at least two ladder sections which are connected together in a folding manner and / or in a drawing manner, so that when all the ladder sections are in a folding state, the ladder body is collected into the accommodating cavity defined by the first sub-shell. The ladder body is fixedly connected with the framework. Compared with an integrated structure, the volume of the first sub-shell and the second sub-shell is smaller, so that the forming process of the first sub-shell and the second sub-shell is simpler, the structural strength of the first sub-shell and the second sub-shell is easier to increase, the structural strength of the first sub-shell and the second sub-shell is improved under the condition that the cost is controlled, and the service life of the first sub-shell and the second sub-shell is prolonged. The top damage and damage conditions of the two sides of the shell are reduced, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of luggage rack, especially to a ladder assembly and a roof platform device with the same. BACKGROUND

[0002] On some ladders suitable for automobile luggage racks, the ladder body is covered by a shell made of plastic material to enhance the overall strength of the ladder and reduce wind resistance. However, the current shell is mostly made by an integral forming process, which not only increases the manufacturing cost of the shell due to its large volume, but also has poor strength, especially on the side surface of the shell (such as the windward side and the leeward side), which causes the top of the two sides of the shell to be damaged and destroyed before the bottom. SUMMARY

[0003] In view of the above problems, the utility model is proposed to provide a ladder assembly and a roof platform device with the same, which can overcome the above problems or at least partially solve the above problems, and can solve the problem of high manufacturing cost of the shell and achieve the purpose of improving user experience.

[0004] Specifically, the utility model provides a ladder assembly suitable for a vehicle, which comprises:

[0005] A framework is used to connect the longitudinal rails and / or platform assembly on the top of the vehicle.

[0006] A shell comprises a first sub-shell covering the framework and a second sub-shell fixedly connected to the front side and / or rear side of the first sub-shell.

[0007] A ladder body comprises at least two ladder sections connected together by folding and / or pulling, so that when all the ladder sections are in the folded state, the ladder body is stored in the accommodating cavity formed by the first sub-shell. Moreover, the ladder body and the framework are fixedly connected.

[0008] Optionally, the first sub-shell and the second sub-shell are embedded in each other in a concave-convex matching structure.

[0009] Optionally, the first sub-shell and the second sub-shell are fixed together by a fastening structure extending left and right therebetween.

[0010] Optionally, in the case where the first sub-shell and the second sub-shell are embedded in each other in a concave-convex matching structure, the right side of the first sub-shell forms a recessed first embedding groove and a first protruding portion protruding from the groove bottom of the first embedding groove. Moreover, the second sub-shell forms a second protruding portion embedded in the first embedding groove and a second embedding groove nested and complementary to the first protruding portion.

[0011] Optionally, a positioning sleeve extending leftward and rightward is formed on the first sub-housing, and a left end of the positioning sleeve is communicated with the mounting opening defined on the first sub-housing. Further, a connecting post inserted into the positioning sleeve is formed in the second sub-housing, and a connecting slot extending leftward and rightward is defined in the connecting post. The rod of the fastening screw is inserted into the mounting opening and connected in the connecting slot, so as to fasten the second sub-housing to the first sub-housing.

[0012] Optionally, the skeleton is located on the left side of the first sub-housing.

[0013] The ladder section is divided into:

[0014] An upper ladder section fixedly connected with the skeleton, the upper ladder section being located on the left side of the first sub-housing. A tread part folded rightward is formed on the upper ladder section, and the tread part extends in the horizontal direction.

[0015] A lower ladder section hingedly connected to the bottom of the upper ladder section, the lower ladder section having at least two sections, and each section of the lower ladder section being hingedly or pullably connected to the next section.

[0016] Optionally, when each section of the lower ladder section is hingedly connected to the next section, the at least two sections of the lower ladder section are unfolded into a first ladder section, a second ladder section and a third ladder section connected in sequence from top to bottom, the top of the first ladder section being hingedly connected to the bottom of the upper ladder section, the top of the second ladder section being hingedly connected to the bottom of the first ladder section, and the top of the third ladder section being hingedly connected to the bottom of the second ladder section.

[0017] When the ladder section is in the folded state, the second ladder section, the third ladder section, the first ladder section and the upper ladder section are arranged in sequence from right to left.

[0018] Optionally, the ladder assembly further comprises a fixing member and a lock body.

[0019] The fixing member is L-shaped, and comprises a first panel extending in the vertical direction and fixedly connected to the second ladder section, and a second panel extending leftward from the first panel.

[0020] The lock body is fixedly connected to the right side of the upper ladder section. The lock body comprises a bolt movable in the vertical direction, and the second panel is provided with a bolt hole corresponding to the bolt, so that the bolt can be inserted into the bolt hole when the ladder section is in the folded state.

[0021] Optionally, the top of the first ladder section is hinged to the bottom of the upper ladder section via a first connecting piece, both ends of the first connecting piece are hinged to the first ladder section and the upper ladder section respectively.

[0022] Optionally, the top of the second ladder section is hinged to the bottom of the first ladder section via a second connecting piece, the second connecting piece comprises two first L-shaped connecting plates, the first L-shaped connecting plates are formed by first vertical plates and first horizontal plates which are connected perpendicularly.

[0023] Optionally, the top of the third ladder section is hinged to the bottom of the second ladder section via a third connecting piece, the third connecting piece comprises two second L-shaped connecting plates, the second L-shaped connecting plates are formed by second vertical plates and second horizontal plates which are connected perpendicularly.

[0024] Optionally, the ladder assembly further comprises a connecting frame, the connecting frame is fixedly connected to the left side of the framework and is directly or indirectly connected to the side wall of the vehicle, the connecting frame is integrally formed by a first fixed part, a second fixed part and a reinforcing connecting part.

[0025] The utility model also provides a roof platform device, include:

[0026] Platform assembly, the platform assembly is structured as connecting in the top of the vehicle.

[0027] The ladder assembly as above is connected to the platform assembly via the framework.

[0028] The second sub-shell and the first sub-shell are in a split structure, compared with an integrated structure, the volume of a single structure of the split structure is smaller, so that the forming process of the first sub-shell and the second sub-shell is relatively simple. Moreover, since the split first sub-shell and the second sub-shell are convenient to form, the structural strength of the first sub-shell and the second sub-shell is more easily increased, thereby improving the structural strength of the first sub-shell and the second sub-shell under the condition of controlling the cost, and improving the user experience. In addition, the improvement of the structural strength of the first sub-shell and the second sub-shell also reduces the top damage and damage of the two sides of the shell body, further improving the user experience.

[0029] Moreover, since the first sub-shell and the second sub-shell are in a split structure, when the second sub-shell is damaged and needs to be replaced, only the second sub-shell can be replaced alone, the maintenance cost is reduced, and the second sub-shell can be set to different colors to adapt to more vehicle styles, so as to improve the ornamental property of the ladder assembly.

[0030] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are exemplary and non-limiting. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0032] Figure 1 is a schematic structural view of a ladder assembly according to an embodiment of the present application;

[0033] Figure 2 is a schematic structural view of a ladder assembly according to an embodiment of the present application;

[0034] Figure 3 is a schematic structural view of a first sub-shell in a ladder assembly according to an embodiment of the present application;

[0035] Figure 4 is a schematic structural view of a second sub-shell in a ladder assembly according to an embodiment of the present application;

[0036] Figure 5 is a schematic front view of a ladder section of a ladder assembly in an unfolded state according to an embodiment of the present application;

[0037] Figure 6 is Figure 5 is an enlarged view of A in FIG.

[0038] Figure 7is a schematic cutaway partial view of a ladder section of the ladder assembly according to one embodiment of the present application in an unfolded state.

[0039] List of reference signs:

[0040] 110, skeleton; 120, connecting frame; 121, first fixed part; 122, second fixed part; 123, reinforcing connecting part; 124, flange;

[0041] 200, shell; 210, first sub-shell; 211, first embedding groove; 212, first protruding part; 220, second sub-shell; 221, second embedding groove; 222, second protruding part; 230, accommodating cavity;

[0042] 300, ladder body; 310, upper ladder section; 320, lower ladder section; 321, first ladder section; 322, second ladder section; 323, third ladder section;

[0043] 410, first connecting piece; 420, second connecting piece; 430, third connecting piece;

[0044] 500, fixing piece; 510, first panel; 520, second panel;

[0045] 600, lock body. DETAILED DESCRIPTION

[0046] The ladder assembly and the roof platform device having the same according to the embodiments of the present application will be described below with reference to Figures 1 to 7 In the description of the embodiments of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features, i.e. one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. When a certain feature "includes or contains" a certain or certain features, unless otherwise specifically described, it indicates that other features and can further include other features.

[0047] Unless otherwise specifically defined and limited, the terms "provide", "mount", "connect", "connect", "fix", "couple" and other terms should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. Those skilled in the art should be able to understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0048] In addition, in the description of the embodiments, the first feature being "on" or "under" the second feature can include the first and second features being in direct contact, or can include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of the embodiments, the first feature being "on", "above", and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is higher in horizontal height than the second feature. The first feature being "under", "below", or "underneath" the second feature can be the first feature being directly below or obliquely below the second feature, or merely means that the first feature is lower in horizontal height than the second feature.

[0049] In the description of the embodiments, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Figure 1 is a schematic structural view of a ladder assembly according to an embodiment of the present application, as shown in Figure 1 and referring to Figures 2 to 7 The present application provides a ladder assembly. The ladder assembly comprises a framework 110, a housing 200, and a ladder body 300.

[0051] The framework 110 is used to connect the longitudinal rails and / or platform assembly on the top of the vehicle. The housing 200 comprises a first sub-housing 210 wrapped on the framework 110, and a second sub-housing 220 fixedly connected to the front side and / or rear side of the first sub-housing 210. The ladder body 300 comprises at least two ladder sections connected together in a folding and / or pulling manner, so that when all the ladder sections are in the folded state, the ladder body 300 is accommodated in an accommodation cavity 230 formed by the first sub-housing 210. Moreover, the ladder body 300 and the framework 110 are fixedly connected.

[0052] The embodiments and the following embodiments are all defined in the direction after the ladder assembly is installed on the vehicle, and the front and rear, left and right, and the like are defined only for the purpose of clearly expressing the specific structure of the ladder assembly, and of course, the second sub-housing 220 can be fixedly connected to the left side and / or right side of the first sub-housing 210.

[0053] In the embodiment, when the ladder assembly needs to be used, the ladder body 300 can be unfolded and extended out of the accommodating cavity 230, so that the user can climb to the roof of the vehicle through the ladder assembly. The first sub-shell 210 wraps the ladder body 300, reduces the wind resistance of the ladder body 300 when the vehicle is running, and also protects the ladder body 300. The second sub-shell 220 is in a split structure with the first sub-shell 210. Compared with an integrated structure, the volume of a single structure of the split structure is smaller, so that the forming process of the first sub-shell 210 and the second sub-shell 220 is simpler. Moreover, since the first sub-shell 210 and the second sub-shell 220 are split for forming, the structural strength of the first sub-shell 210 and the second sub-shell 220 is more easily increased, thereby improving the structural strength of the first sub-shell 210 and the second sub-shell 220 under the condition of controlling the cost, and improving the user experience. In addition, the improvement of the structural strength of the first sub-shell 210 and the second sub-shell 220 also reduces the damage and destruction of the top of the shell body 200 on both sides, further improving the user experience.

[0054] Moreover, since the first sub-shell 210 and the second sub-shell 220 are in a split structure, when the second sub-shell 220 is damaged and needs to be replaced, only the second sub-shell 220 can be replaced, thereby reducing the maintenance cost, and the second sub-shell 220 can be set to different colors to adapt to more vehicle styles, thereby improving the ornamental value of the ladder assembly.

[0055] In some embodiments of the utility model, the first sub-shell 210 and the second sub-shell 220 are embedded with each other in a concave-convex matching structure.

[0056] In some embodiments of the utility model, as shown in Figure 1 , Figure 3 and Figure 4 , in the case where the first sub-shell 210 and the second sub-shell 220 are embedded with each other in a concave-convex matching structure, the right side of the first sub-shell 210 forms a recessed first embedding groove 211 and a first protruding portion 212 protruding from the groove bottom of the first embedding groove 211. Moreover, the second sub-shell 220 forms a second protruding portion 222 embedded in the first embedding groove 211 and a second embedding groove 221 nested and complementary to the first protruding portion 212.

[0057] In the embodiment, the first sub-shell 210 and the second sub-shell 220 are embedded with each other in a concave-convex matching structure, which further improves the structural strength of the first sub-shell 210 and the second sub-shell 220.

[0058] In some embodiments of the utility model, the first sub-shell 210 and the second sub-shell 220 are fixed together through a left-right extending fastening structure.

[0059] In some embodiments of the utility model, as shown in Figure 3 and Figure 4As shown in the figure, the fastening structure extending left and right between the first sub-shell 210 and the second sub-shell 220 is fixed together, and a positioning sleeve extending left and right is formed on the first sub-shell 210, and the left end of the positioning sleeve is communicated with the mounting opening defined on the first sub-shell 210. And the second sub-shell 220 is formed with a connecting column inserted into the positioning sleeve, and the connecting column is defined with a connecting groove extending left and right. The rod part of the fastening screw penetrates from the mounting opening and is connected in the connecting groove to facilitate the second sub-shell 220 to be fastened and connected to the first sub-shell 210.

[0060] In the embodiment, the connecting column is inserted into the positioning sleeve to limit the movement of the first sub-shell 210 and the second sub-shell 220 in the direction perpendicular to the left and right directions, so as to facilitate the subsequent installation of the fastening screw. By screwing the fastening screw with the connecting groove in the connecting column, the second sub-shell 220 is fixedly connected with the first sub-shell 210, and the connection structure is simple and convenient to operate. Moreover, the mounting opening is arranged towards the direction close to the vehicle, so that the surface of the second sub-shell 220 away from the vehicle is more simple and not easy to scratch the user, and the ornamental value of the ladder assembly is improved.

[0061] In some embodiments of the present application, as shown in Figure 1 and Figure 2 The skeleton 110 is located on the left side of the first sub-shell 210. As shown in Figure 5 The ladder section is divided into an upper ladder section 310 fixedly connected with the skeleton 110 and a lower ladder section 320 hingedly connected at the bottom of the upper ladder section 310. As shown in Figure 1 and Figure 7 The upper ladder section 310 is located on the left side of the first sub-shell 210. The upper ladder section 310 is formed with a step part folded to the right side, and the step part extends in the horizontal direction. The lower ladder section 320 has at least two sections, and each section of the lower ladder section 320 is hingedly or pullably connected together in sequence.

[0062] In the embodiment, the lower ladder section 320 can be accommodated into or moved out of the accommodating cavity 230 by rotating or sliding. When the ladder section is in the folded state, both the upper ladder section 310 and the lower ladder section 320 are accommodated in the accommodating cavity 230, thereby avoiding that the ladder body 300 is subjected to large wind resistance, improving the stability of the vehicle driving, and improving the user's use experience. When the ladder assembly is needed to be used for climbing, the ladder section is unfolded to a suitable height to provide a stepable structure for the user, thereby meeting the user's climbing demand.

[0063] In some embodiments of the present application, as shown in Figure 5 and Figure 7As shown, in the case that the ladder sections 320 are connected together in sequence by hinging, at least two ladder sections 320 are unfolded into a first ladder section 321, a second ladder section 322 and a third ladder section 323 connected in sequence from top to bottom, the top of the first ladder section 321 is hinged to the bottom of the upper ladder section 310, the top of the second ladder section 322 is hinged to the bottom of the first ladder section 321, and the top of the third ladder section 323 is hinged to the bottom of the second ladder section 322.

[0064] In the embodiment, the third ladder section 323 can be in contact with the ground, and since the first ladder section 321 is connected to the frame 110, both ends of the ladder assembly are fixed, thereby making the structure of the ladder assembly in the unfolded state more stable, reducing the shaking of the ladder assembly when the user climbs, improving the use safety of the ladder assembly, and also reducing the occurrence of the case that the vehicle body is abraded due to the shaking of the ladder assembly, and improving the user experience.

[0065] In some embodiments of the utility model, when the ladder sections are in the folded state, the second ladder section 322, the third ladder section 323, the first ladder section 321 and the upper ladder section 310 are arranged in sequence from right to left.

[0066] In the embodiment, when the third ladder section 323 and the second ladder section 322 are folded, they are rotated in the same direction to accommodate the third ladder section 323 between the first ladder section 321 and the second ladder section 322 in the left-right direction, which makes the accommodation method simpler and improves the stability after being accommodated, and improves the user experience.

[0067] In addition, when the ladder sections are in the unfolded state and the third ladder section 323 can be in contact with the ground, the force direction of the user stepping on the ladder section is opposite to the force direction required for folding the ladder section, and other blocking members are not required to avoid the rotation of the ladder section, thereby improving the stability of the ladder assembly.

[0068] In some embodiments of the utility model, as shown in Figure 5 and Figure 7 The ladder assembly further comprises a fixing member 500 and a lock body 600. As shown in Figure 6 The fixing member 500 is L-shaped and comprises a first panel 510 fixedly connected to the second ladder section 322 along the upward and downward direction and a second panel 520 extending leftward from the first panel 510. The lock body 600 is fixedly connected to the right side of the upper ladder section 310. The lock body 600 comprises a bolt movable along the upward and downward direction, and the second panel 520 is provided with a bolt hole corresponding to the bolt, so that the bolt can be inserted into the bolt hole when the ladder sections are in the folded state.

[0069] In the embodiment, the second ladder section 322 is at the end of the other ladder sections away from the framework when the ladder assembly is in the folded state, and the pin can be inserted into the insertion hole to fix the second ladder section 322 when the ladder section is in the folded state, thereby preventing the ladder section from being accidentally unfolded. The cooperation of the fixing member 500 and the lock body 600 ensures the stability and safety of the ladder assembly in the folded state, and the cooperation of the pin and the insertion hole also facilitates the quick locking and releasing of the ladder section, thereby improving the convenience of using the ladder assembly.

[0070] In some embodiments of the utility model, as shown in Figure 5 The right end of the second panel 520 is connected to the lower end of the first panel 510.

[0071] In some embodiments of the utility model, as shown in Figure 7 The top of the first ladder section 321 is hinged to the bottom of the upper ladder section 310 through the first connecting member 410, and the two ends of the first connecting member 410 are respectively hinged to the first ladder section 321 and the upper ladder section 310. The first connecting member 410 can be in the shape of a long plate or a long column.

[0072] The front and rear ends of the framework 110 are respectively fixedly connected with the baffles extending towards each other in the front and rear directions, the baffles are located on the right side of the upper ladder section 310 and stop on the rotation path of the first connecting member 410, so that the rotation angle of the first connecting member 410 is less than 180° after the ladder assembly is unfolded, and the first ladder section 321 is located on the right side of the upper ladder section 310.

[0073] In the embodiment, the first connecting member 410 is blocked by the baffle during the process of rotating away from the upper ladder section 310, so that the angle of the first connecting member 410 rotating away from the upper ladder section 310 is less than 180°, that is, after the first connecting member 410 rotates away from the upper ladder section 310, the end of the first connecting member 410 connected with the first ladder section 321 is located on the right side of the end of the first connecting member 410 connected with the upper ladder section 310. After the ladder assembly is installed on the side wall of the vehicle, since the lower ladder section 320 is located on the side of the upper ladder section 310 away from the vehicle when the ladder assembly is in the unfolded state, the distance between the lower ladder section 320 and the vehicle body is avoided to be too close, thereby avoiding the lower ladder section 320 from contacting or even scratching the vehicle body after shaking, and improving the user experience. Moreover, the wheel arch of the vehicle can also be prevented from protruding outward to interfere with the lower ladder section 320.

[0074] In some embodiments of the utility model, the rotation axis of the first ladder section 321 and the first connecting member 410 is located on the upper side of the baffle.

[0075] In some embodiments of the utility model, as shown in Figure 6 and Figure 7As shown in the drawings, the top of the second ladder section 322 is hinged to the bottom of the first ladder section 321 through a second connecting piece 420, and the second connecting piece 420 comprises two first L-shaped connecting plates formed by first vertical plates and first horizontal plates connected perpendicularly to each other. The two first vertical plates are fixedly connected to the first ladder section 321 and the second ladder section 322 at one end respectively, and the first horizontal plates are hinged to each other at the end away from the first vertical plates. The length of the first horizontal plates satisfies that, in the folded state of the ladder section, there is a position of the third ladder section 323 between the first ladder section 321 and the second ladder section 322 in the left-right direction.

[0076] As shown in the drawings, the top of the second ladder section 322 is hinged to the bottom of the first ladder section 321 through a second connecting piece 420, and the second connecting piece 420 comprises two first L-shaped connecting plates formed by first vertical plates and first horizontal plates connected perpendicularly to each other. The two first vertical plates are fixedly connected to the first ladder section 321 and the second ladder section 322 at one end respectively, and the first horizontal plates are hinged to each other at the end away from the first vertical plates. The length of the first horizontal plates satisfies that, in the folded state of the ladder section, there is a position of the third ladder section 323 between the first ladder section 321 and the second ladder section 322 in the left-right direction. Figure 6 Figure 7 As shown in the drawings, the top of the second ladder section 322 is hinged to the bottom of the first ladder section 321 through a second connecting piece 420, and the second connecting piece 420 comprises two first L-shaped connecting plates formed by first vertical plates and first horizontal plates connected perpendicularly to each other. The two first vertical plates are fixedly connected to the first ladder section 321 and the second ladder section 322 at one end respectively, and the first horizontal plates are hinged to each other at the end away from the first vertical plates. The length of the first horizontal plates satisfies that, in the folded state of the ladder section, there is a position of the third ladder section 323 between the first ladder section 321 and the second ladder section 322 in the left-right direction.

[0077] In the above two embodiments, the first L-shaped connecting plate or the second L-shaped connecting plate is hinged, which is simple in structure, convenient for production and installation, and facilitates the production of the ladder assembly and reduces the production cost of the ladder assembly.

[0078] In addition, by arranging the first L-shaped connecting plate or the second L-shaped connecting plate, the ladder section is in an unfolded state, and the third ladder section 323 is in contact with the ground, so that when the ladder section, the ground and the side wall of the vehicle form a triangle, the force direction of the user stepping on the ladder section is opposite to the force direction required for folding the ladder section, and no other stopper is needed to avoid the rotation of the ladder section, thereby improving the stability of the ladder assembly.

[0079] As shown in the drawings, the top of the second ladder section 322 is hinged to the bottom of the first ladder section 321 through a second connecting piece 420, and the second connecting piece 420 comprises two first L-shaped connecting plates formed by first vertical plates and first horizontal plates connected perpendicularly to each other. The two first vertical plates are fixedly connected to the first ladder section 321 and the second ladder section 322 at one end respectively, and the first horizontal plates are hinged to each other at the end away from the first vertical plates. The length of the first horizontal plates satisfies that, in the folded state of the ladder section, there is a position of the third ladder section 323 between the first ladder section 321 and the second ladder section 322 in the left-right direction. Figure 2 Figure 5 As shown in the drawings, the top of the second ladder section 322 is hinged to the bottom of the first ladder section 321 through a second connecting piece 420, and the second connecting piece 420 comprises two first L-shaped connecting plates formed by first vertical plates and first horizontal plates connected perpendicularly to each other. The two first vertical plates are fixedly connected to the first ladder section 321 and the second ladder section 322 at one end respectively, and the first horizontal plates are hinged to each other at the end away from the first vertical plates. The length of the first horizontal plates satisfies that, in the folded state of the ladder section, there is a position of the third ladder section 323 between the first ladder section 321 and the second ladder section 322 in the left-right direction.

[0080] ​​The connecting frame 120 is fixedly connected to the left side of the framework 110 and is used for being directly or indirectly connected to the side wall of the vehicle. The connecting frame 120 is integrally formed by a first fixing part 121, a second fixing part 122 and a reinforcing connecting part 123. The first fixing part 121 is fixedly connected to the left side of the framework 110 in the front-rear direction. The second fixing part 122 is arranged on the left side of the first fixing part 121 in parallel and forms a flange 124 extending to the bottom of the first fixing part 121 from the bottom. The second fixing part 122 is used for being directly or indirectly connected to the side wall of the vehicle. The reinforcing connecting part 123 extends in the left-right direction. There are at least two reinforcing connecting parts 123, which are fixedly connected between the first fixing part 121 and the second fixing part 122.

[0081] In the embodiment, the design that the connecting frame 120 is integrally formed by the first fixing part 121, the second fixing part 122 and the reinforcing connecting part 123 enhances the overall strength and stability of the connecting frame 120. Moreover, the structure strength of the connecting frame 120 is higher through the design of the flange 124 and the reinforcing connecting part 123, thereby guaranteeing the load-bearing capacity after the ladder assembly is connected to the vehicle.

[0082] In some embodiments of the utility model, as shown in Figure 2 Two vertically extending long holes are formed on the first fixing part 121, and the two long holes are arranged in the front-rear direction.

[0083] The framework 110 is provided with a circular hole corresponding to the long hole.

[0084] In the embodiment, the adjustable connection between the connecting frame 120 and the framework 110 is realized through the cooperation of the long hole and the circular hole. The vertical extension design of the long hole allows the position between the connecting frame 120 and the framework 110 to be adjusted up and down within a certain range, so that the position of the connecting frame 120 can be adjusted according to actual needs when the ladder assembly is installed, thereby improving the flexibility of the installation of the ladder assembly and further enhancing the adaptability and stability of the connection between the ladder assembly and the vehicle.

[0085] In some embodiments of the utility model, each ladder section includes at least one transversely arranged stepping plate, and the top and bottom of each stepping plate are provided with anti-skid structures.

[0086] In the embodiment, the anti-skid structures are arranged on both sides of the stepping plate, so that the stepping plate has the anti-skid structure above it in both the unfolded state and the stored state, thereby guaranteeing the safety of the user using the ladder assembly and improving the user experience.

[0087] The utility model embodiment further provides a roof platform device. The roof platform device comprises a platform assembly and the ladder assembly in any of the above embodiments. The platform assembly is configured to be connected to the top of the vehicle. The ladder assembly is connected to the platform assembly via the framework 110.

[0088] In the embodiment, the combination of the platform assembly and the ladder assembly expands the storage capacity of the vehicle and facilitates users to climb onto the platform assembly. The folding or pulling structure of the ladder assembly saves the space occupied by the ladder assembly. The first sub-shell 210 wraps the ladder body 300, which not only reduces the wind resistance of the ladder body 300 during the driving of the vehicle, but also reduces the knocking of the ladder assembly. When the ladder assembly is needed, the ladder body 300 can be extended from the accommodating cavity 230, so that the user can climb to the roof through the ladder assembly. The second sub-shell 220 and the first sub-shell 210 are in a split structure, and compared with the integrated structure, the volume of the single structure of the split structure is smaller, so that the forming process of the first sub-shell 210 and the second sub-shell 220 is relatively simple. Moreover, the split first sub-shell 210 and the second sub-shell 220 are easy to form, so that the structural strength of the first sub-shell 210 and the second sub-shell 220 is more easily increased, thereby improving the structural strength of the first sub-shell 210 and the second sub-shell 220 under the condition of controlling the cost, and improving the user experience. In addition, the improvement of the structural strength of the first sub-shell 210 and the second sub-shell 220 also reduces the damage and destruction of the top of the two sides of the shell body 200, further improving the user experience.

[0089] Moreover, since the first sub-shell 210 and the second sub-shell 220 are in a split structure, when the second sub-shell 220 is damaged and needs to be replaced, only the second sub-shell 220 can be replaced, which reduces the maintenance cost, and the second sub-shell 220 can be set to different colors to adapt to more vehicle styles to improve the ornamental value of the ladder assembly.

[0090] At this point, those skilled in the art should recognize that although the utility model has been shown and described in detail herein, many other variants or modifications conforming to the principles of the utility model can be directly determined or deduced according to the disclosure of the utility model without departing from the spirit and scope of the utility model. Therefore, the scope of the utility model should be understood and recognized as covering all these other variants or modifications.

Claims

1. A ladder assembly, characterized by, Comprising: a skeleton for connecting longitudinal rails and / or platform components on the top of a vehicle; a housing comprising a first sub-housing wrapped on the skeleton and a second sub-housing fixedly connected on the front side and / or rear side of the first sub-housing; a ladder body comprising at least two sections of ladder sections foldably and / or pullably connected together, so that the ladder body is accommodated in a receiving cavity formed by the first sub-housing when all the ladder sections are in a folded state; and the ladder body and the skeleton are fixedly connected.

2. The ladder assembly according to claim 1, wherein: the first sub-housing and the second sub-housing are embedded in each other in a concave-convex matching structure; and / or the first sub-housing and the second sub-housing are fixed together by a left-right extending fastening structure.

3. The ladder assembly according to claim 2, wherein: in the case that the first sub-housing and the second sub-housing are embedded in each other in a concave-convex matching structure, the right side of the first sub-housing forms a recessed first embedding groove and a first protruding portion protruding from the groove bottom of the first embedding groove; and the second sub-housing forms a second protruding portion embedded in the first embedding groove and a second embedding groove nested with the first protruding portion in a complementary matching manner.

4. The ladder assembly according to claim 2, wherein: in the case that the first sub-housing and the second sub-housing are fixed together by a left-right extending fastening structure, a left-right extending positioning sleeve is formed on the first sub-housing, the left end of the positioning sleeve being communicated with a mounting opening defined on the first sub-housing; and a connecting column inserted into the positioning sleeve is formed in the second sub-housing, the connecting column defining a left-right extending connecting groove therein; the shank of a fastening screw is inserted from the mounting opening and connected in the connecting groove to facilitate the second sub-housing being fixedly connected to the first sub-housing.

5. The ladder assembly according to claim 1, wherein: the skeleton is located on the left side of the first sub-housing; and the ladder sections are divided into: an upper ladder section fixedly connected with the skeleton, the upper ladder section being located on the left side of the first sub-housing, a step portion being formed on the upper ladder section and being folded to the right side, the step portion extending in a horizontal direction; a lower ladder section hingedly connected to the bottom of the upper ladder section, the lower ladder section having at least two sections, each section of the lower ladder section being hingedly or pullably connected together in sequence.

6. The ladder assembly according to claim 5, wherein: in the case that each section of the lower ladder section is hingedly connected together in sequence, at least two sections of the lower ladder section are unfolded into a first ladder section, a second ladder section and a third ladder section connected in sequence from top to bottom, the top of the first ladder section being hingedly connected to the bottom of the upper ladder section, the top of the second ladder section being hingedly connected to the bottom of the first ladder section, and the top of the third ladder section being hingedly connected to the bottom of the second ladder section; and in the case that the ladder sections are in a folded state, the second ladder section, the third ladder section, the first ladder section and the upper ladder section are arranged in sequence from right to left.

7. The ladder assembly according to claim 6, further comprising a fixing member and a lock body. ​ The fixing member is L-shaped, comprising a first panel fixedly connected to the second ladder section and extending along the up-down direction, and a second panel extending leftward from the first panel; The lock body is fixedly connected to the right side of the upper ladder section; the lock body comprises a bolt movable along the up-down direction, and the second panel is provided with a hole corresponding to the bolt, so that the bolt can be inserted into the hole when the ladder section is in the folded state.

8. The ladder assembly according to claim 6, wherein, the top of the first ladder section is hingedly connected to the bottom of the upper ladder section through a first connecting member, the two ends of the first connecting member are respectively hingedly connected to the first ladder section and the upper ladder section; the front and rear ends of the frame are respectively fixedly connected with a baffle extending along the front and rear directions and approaching each other, the baffle is located on the right side of the upper ladder section and blocks the rotation path of the first connecting member, so that the rotation angle of the first connecting member is less than 180° when the ladder section is unfolded, and the first ladder section is located on the right side of the upper ladder section; and / or the top of the second ladder section is hingedly connected to the bottom of the first ladder section through a second connecting member, the second connecting member comprises two first L-shaped connecting plates formed by first vertical plates and first horizontal plates connected perpendicularly to each other; one end of each of the two first vertical plates is fixedly connected to the first ladder section and the second ladder section, and the ends of the first horizontal plates away from the first vertical plates are hingedly connected to each other; and / or the top of the third ladder section is hingedly connected to the bottom of the second ladder section through a third connecting member, the third connecting member comprises two second L-shaped connecting plates formed by second vertical plates and second horizontal plates connected perpendicularly to each other; one end of each of the two second vertical plates is fixedly connected to the second ladder section and the third ladder section, and the ends of the second horizontal plates away from the second vertical plates are hingedly connected to each other.

9. The ladder assembly according to claim 1, wherein, the ladder assembly further comprises a connecting frame fixedly connected to the left side of the frame and directly or indirectly connected to the side wall of the vehicle; the connecting frame is integrally formed by a first fixed part, a second fixed part and a reinforcing connecting part; the first fixed part is vertically arranged and fixedly connected to the left side of the frame along the front and rear directions; the second fixed part is arranged parallel to the left side of the first fixed part and forms a flange extending rightward from the bottom to the bottom of the first fixed part, and is used for directly or indirectly connecting to the side wall of the vehicle; the reinforcing connecting part extends along the left and right directions, and there are at least two reinforcing connecting parts fixedly connected between the first fixed part and the second fixed part.

10. A roof platform arrangement characterized in that comprising: a platform assembly configured to be connected to the top of the vehicle; the ladder assembly according to any one of claims 1 to 9, wherein the ladder assembly is connected to the platform assembly through the frame.

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