Folding display rack

Abstract

The present application belongs to the field of exhibition display, and particularly relates to a foldable exhibition stand, which comprises corner connecting pieces and middle connecting pieces. The corner connecting pieces comprise upper corner connecting pieces and lower corner connecting pieces, and the long side frame is connected with the upper and lower short side frames through the upper and lower corner connecting pieces at both ends. The middle connecting pieces are located at the middle position of the long side frame and divide the long side frame into two parts. The long side frame can be folded from the middle to the inner side direction of the exhibition frame through the middle connecting pieces. The two long side frames can be folded and stored on the lower short side frame through the corner connecting pieces after being folded from the middle. The present application can directly form one or more folding structures for the overall structure of the exhibition stand, greatly reducing the volume of the product and facilitating transportation. The length of the two long side frames is not limited by the length of the lower frame through the folding function. The present application does not need to be built on site, and can be folded and unfolded as a whole, greatly improving the installation efficiency and being convenient and fast.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of exhibition display, and particularly relates to a longitudinally expandable and foldable exhibition stand. BACKGROUND

[0002] With the development of society, flexible and rapid construction of various display stands for commodity display and promotion in meetings, exhibitions, displays and other occasions is more and more loved by enterprises. The display cloth frame and the display light box are a kind of widely used exhibition appliance, and the main structure is the combination of the display frame, the canvas and the light, which can temporarily form a large exhibition screen or independently form a small propaganda column. The present application belongs to an independent stand structure.

[0003] The existing independent stand structure is a rectangular frame structure constructed on site by profiles, connecting parts and locks, which is inconvenient for unified storage and transportation due to different lengths and specifications of the profiles. On the other hand, the structure is complicated when constructing the display frame, and many connecting parts are needed, which will cause time-consuming and laborious on-site construction, low efficiency, and many connecting parts, which are easy to lose or confuse, affecting repeated use, so the foldable stand has become a development trend.

[0004] At present, the sporadic display folding stands on the market also have problems such as complicated structure, high manufacturing cost, complex combination and construction, and poor stability. For example, the foldable structure formed by patent 202111603921.3 realizes the structure of turning and folding the vertical rod inward by the first connecting frame, the first rotating structure, the second rotating structure and other structures, which realizes the small storage structure by twice folding, and needs to cooperate with various fixing components to realize fixation after unfolding. Therefore, it cannot meet the use requirements of the market, and cannot realize the folding storage and stretching expansion of the whole stand.

[0005] In addition, there is no structure form that can realize the longitudinal or transverse extension of the display frame on the market at present, which cannot meet the use requirements of some occasions. SUMMARY

[0006] In order to overcome the above defects, the present application provides a foldable stand with simple structure and convenient construction, which is convenient for transportation and does not need customers to assemble the frame, and the size of the stand is flexible and variable.

[0007] In order to achieve the above purpose, the technical scheme of the present application is as follows:

[0008] A foldable stand, comprising a display frame, the display frame comprising a pair of short side frames and at least a pair of long side frames, further comprising:

[0009] The corner connecting piece comprises an upper corner connecting piece and a lower corner connecting piece, and the long side frame is connected with the upper and lower short side frames through the upper and lower corner connecting pieces at both ends of the long side frame.

[0010] The intermediate connecting piece is arranged at the middle position of the long side frame and divides the long side frame into two parts, the long side frame can be folded from the middle to the inside of the exhibition frame through the intermediate connecting piece, and the two long side frames can be folded and stored on the lower short side frame through the corner connecting piece after being folded from the middle.

[0011] As a preferred embodiment of the present application, the lower corner connecting piece comprises a lower corner body, a lower pin shaft and a lower rotating piece, the lower rotating piece is connected with the lower corner body through the lower pin shaft and can rotate around the lower pin shaft to the inside of the exhibition frame, the movable end of the lower rotating piece is connected with the long side frame through insertion, the lower pin shaft is installed in the connecting end of the corner body and the rotating piece with one end as a reference and the other end inclined downward and to the inside of the exhibition frame, the upper corner connecting piece comprises an upper corner body, an upper pin shaft and an upper rotating piece, and the upper corner connecting piece and the lower corner connecting piece are arranged on the upper and lower ends of the long side frame to form an axisymmetric structure.

[0012] The present application can drive the long side frame connected with the rotating shaft to be folded obliquely around the rotating shaft to the corresponding direction, so that the two long side frames can be folded and stored in a staggered manner.

[0013] As a further improvement of the present application, the inclination angle of the lower pin shaft downward is the same as the inclination angle to the inside of the exhibition frame, and the angles are complementary to each other, so as to ensure that the long side frame is parallel to the short side frame after being folded.

[0014] As a preferred embodiment of the present application, the intermediate connecting piece comprises an intermediate body and a folding piece hinged at both ends of the intermediate body through a pin, and the folding piece can rotate to the outside of the exhibition frame around the pin.

[0015] As a further improvement of the present application, in order to make the frame more stable as a whole, a supporting rod is further arranged, the two ends of the supporting rod are connected with the intermediate body through clamping, and the supporting rod is used for limiting the folding of the long side frame after being unfolded.

[0016] In order to reduce the fixed connecting piece, the building connecting piece and other components, the present application improves the frame profile, that is, two insertion holes are arranged on the inner end surface of the short side frame and the long side frame along the length direction, and an installation groove is formed between the two insertion holes.

[0017] As a further improvement of the present application, a light assembly is arranged in the installation groove, so as to further increase the lighting effect during the exhibition and render the scene atmosphere.

[0018] In order to cooperate with the improvement of the profile and facilitate the installation on site, the light assembly can be selected from a light guide plate, a light bar and the like, and can be fixed in the installation groove.

[0019] In order to realize the longitudinal extension of the exhibition frame and achieve the purpose of folding, the application further designs a middle reverse connecting piece for connecting between two pairs of and more long side frames; the middle reverse connecting piece comprises a middle reverse body and reverse rotating pieces respectively hinged at both ends of the middle reverse body through positioning pins, the reverse rotating pieces can rotate towards the inside of the exhibition frame around the positioning pins; one end of the long side frames on the same side is respectively connected with the reverse rotating pieces through plug-in connection, and the middle reverse connecting pieces at the corresponding positions on the left and right sides are connected through support rods to limit the rotation of the middle reverse connecting pieces after the exhibition frame is unfolded.

[0020] In order to ensure that the side frames form the best parallel position after folding and not cause friction damage to each component, the height of the middle body is matched with the height of the long side frame after folding.

[0021] In order to further facilitate the electrical connection of the light assembly on both sides of the middle connecting piece installed in the long side frame mounting groove, the light assembly is provided with a conductive terminal on the side close to the middle connecting piece, a conductive column extending to the side of the middle connecting piece and beyond the conductive terminal is provided in the conductive terminal through a spring; a conductive column one penetrating the middle body is fixed on the middle body of the middle connecting piece corresponding to the position of the conductive column; after the exhibition frame is unfolded, the electrical series connection of the light assemblies on both sides of the middle connecting piece is realized through the contact connection of the conductive column and the conductive column one.

[0022] The exhibition frame can be directly placed on site when the side frame is wide enough, and of course a foot plate can be fixed at the bottom of the lower side frame to improve the stability of the exhibition frame.

[0023] The advantages of the application are:

[0024] 1. The structure of the application is ingenious, through the design of the corner connecting piece and the long side frame, the overall structure of the exhibition frame can form one or more folding structures, greatly reducing the volume of the product and facilitating transportation.

[0025] 2. The structure of the application is stable, through the cooperation design of the support rod and the long side frame, the structural stability problem of the exhibition frame after unfolding is solved, which is convenient and reliable.

[0026] 3. The structure of the application is simple and the manufacturing cost is low, the overall folding and unfolding can be realized, no on-site assembly is needed, no other auxiliary tools are needed, the use requirements of customers on-site fast assembly and fast construction can be met at any time and anywhere, the installation efficiency is greatly improved, which is convenient and fast.

[0027] 4. The application realizes the staggered folding function through the design of the corner connecting piece and the long side frame, which ensures that the length of the side frame is not limited by the length of the lower side frame, so as to realize the flexible and variable size of the exhibition frame.

[0028] 5、The present application can also increase the number of long frames through the intermediate reverse connector to realize the extension of the longitudinal height of the frame, improve the use efficiency of the frame, and directly add light components through the design of the frame structure, highlight the exhibition display effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is an exploded structural view of the folding display stand involved in example one;

[0030] Figure 2 It is a perspective view of the lower corner connector;

[0031] Figure 3 It is a left view of the lower corner connector after folding;

[0032] Figure 4 It is a top view of the lower corner connector after folding;

[0033] Figure 5 It is a perspective view of the upper corner connector;

[0034] Figure 6 It is a structural view of the intermediate connector;

[0035] Figure 7 It is a left view of Figure 1

[0036] Figure 8 It is a final folding structural view of the folding display stand;

[0037] Figure 9 It is a structural schematic view of the short frame or long frame in the frame;

[0038] Figure 10 It is a frame building structural view involved in example two;

[0039] Figure 11 It is a left view of Figure 8

[0040] Figure 12 It is an intermediate reverse connector;

[0041] Figure 13 It is a perspective view of the intermediate connector corresponding to example three;

[0042] Figure 14 It is a connection structural view of the intermediate connector and the long frame corresponding to example three;

[0043] Figure 15 It is a connection structural view of the intermediate connector and the light component after unfolding in example three. DETAILED DESCRIPTION

[0044] ​​The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] like Figure 1 As shown: This embodiment relates to a folding display stand, including a display frame, a base plate 7, and a support rod 5. The display frame has a rectangular structure, including a pair of short side frames 2 and a pair of long side frames 1. The long side frames include two long side frame segments 11 of the same length and a middle connecting piece 4; as shown... Figure 1 As shown: The corner connector includes an upper corner connector 9 and a lower corner connector 3. The upper short frame is hinged to one end of the long frame through the upper corner connector 9, and the lower short frame is hinged to one end of the long frame through the lower corner connector 3.

[0047] like Figures 2 to 4 As shown: The lower corner connector 3 includes a lower corner body 31, a lower rotating member 32, and a lower pin 33. In this embodiment, the lower corner body 31 is provided with a first connecting end face 1 and a second connecting end face 311 connected at a 90-degree angle. The first connecting end face 1 has a directly formed insertion boss 312 for connecting with the short frame. The second connecting end face 2 is hinged to the lower rotating member 32 through the lower pin 33. The movable end of the lower rotating member 32 also has an insertion boss and is connected to the long frame segment 11. This allows the lower rotating member 32 to drive the connected long frame segment 11 to rotate 90 degrees around the lower pin 33 towards the inside of the frame.

[0048] like Figure 2 , Figure 5 As shown: The upper corner connector 9 includes an upper corner body 91, an upper rotating component 92, and an upper pin 93. The upper corner connector 9 and the lower corner connector 3 have similar structures, except that the upper pin 93 and the lower pin 93 have different inclination directions, thus ensuring that the upper and lower long edges fold to the same side; Figure 7 As shown: the upper corner connector 9 and the lower corner connector 3 are installed on the upper and lower sides of the long frame respectively to form an axisymmetric structure.

[0049] This embodiment uses the corner connector as an example to detail the design issues related to the tilt angle. For example... Figures 2 to 4As shown: the upper end surface of the connecting end surface two 311 of the lower corner connecting piece 3 is a left-high right-low inclined butt joint structure; the lower pin shaft is installed on the connecting end surface two 311 with the left end as the reference, downward and to the right end and to the inside of the frame; the straight line where the lower pin shaft is located forms an angle α with the horizontal plane; the straight line where the lower pin shaft is located forms an angle β with the vertical plane; in this embodiment, the angle α and the angle β are the same angle, forming a mutually complementary inclined angle structure, thereby ensuring that the long side frame and the short side frame can be parallel to each other after being folded obliquely; in order to minimize the volume after folding, the angle should be less than 10 degrees, and in this embodiment, the angle α and the angle β are both 3.5 degrees. In order to make the long side frame vertical after the frame is unfolded, the butt joint surface of the lower rotating piece on the connecting end surface two 311 of the lower corner body is designed as a left-narrow right-wide matching structure, and the plug-in boss formed by the movable end of the lower rotating piece 32 is vertically inserted into the long side frame 1; in this way, the lower rotating piece 32 will drive the long side frame segment 11 to fold obliquely in the corresponding direction, and the long side frame can be normally erected after unfolding.

[0050] As shown in Figure 6 : the middle connecting piece 4 includes a middle body 41 and a folding piece 42 hinged to both ends of the middle body through a pin, and the folding piece can rotate towards the outside of the frame along the pin shaft; two long side frame segments 11 are respectively connected to two folding pieces 42 through insertion, thereby realizing the inward folding of the long side frame; the middle body of the middle connecting piece is provided with a clamping end 43 for connecting with the fixed support rod 5 after the frame is unfolded.

[0051] As shown in Figure 9 : in this embodiment, the cross-sectional structure of the short side frame 2 and the long side frame 1 is the same, only the length is different. This embodiment describes the structure of the short side frame 2, and the inner side surface of the short side frame is provided with two insertion holes 21 along the length direction, which are used for insertion connection with the middle connecting piece 4, the corner connecting piece and the middle reverse connecting piece 8; an installation groove 22 is formed between the two insertion holes, which is used for the installation of the light emitting assembly 6; a clamping groove 23 is formed on both sides of the short side frame 2, which is used for fixed connection with the canvas around.

[0052] As shown in Figure 1 : the frame is provided with a foot plate 7, and the foot plate 7 is fixedly connected with the short side frame.

[0053] As shown in Figure 6 , Figure 7 and Figure 8 : the hinge structure of the middle connecting piece 4 is normally designed, and the four corners of the frame are connected by the special corner connecting piece of the present case; through the upper and lower corner connecting pieces which are symmetrical about the axis, the left long side frame 1 is obliquely folded from the middle to the rear side of the frame, and the right long side frame is obliquely folded from the middle to the front side of the frame, thereby forming a front and rear staggered non-overlapping structure after the two long side frames are folded, thereby overcoming the limitation of the horizontal length of the short side frame.

[0054] As shown in Figure 6 : the height of the middle body 41 in this embodiment is adapted to the height of the long side frame 1 after folding. Finally, the exhibition frame can be folded into the minimum structure state.

[0055] As can be seen from this embodiment and the drawings, the exhibition frame of the present application does not require any tool assistance when folding, unfolding and fixed installation, and also does not require matching additional parts, and the installation and fixation are very quick and convenient.

[0056] In this embodiment, support rods are used to limit and stabilize the structure of the exhibition frame; of course, the present application can also not use support rods, for example, on the basis of the hinge connection between the middle body of the middle connecting piece 4 and the folding piece, the damping design or the clamping design or the tight fit design of the two is increased to ensure the relative stability of the position between the middle body and the folding piece after unfolding; similarly, the upper and lower corner connecting pieces can also adopt the above structure to ensure the positional stability of the long side frame after unfolding; finally, the further stability of the exhibition frame is realized by buckling the canvas, and the above damping design or clamping design or tight fit design is a conventional design, which will not be discussed further.

[0057] Embodiment 2:

[0058] As shown in Figure 10 , on the basis of embodiment 1, the folding exhibition frame involved in this embodiment is longitudinally expanded, including two pairs of long side frames 1. The exhibition frame introduces the middle reverse connecting piece 8 when expanding.

[0059] As shown in Figure 12 : the middle reverse connecting piece 8 includes a middle reverse body 81 and reverse rotating pieces 82 respectively hinged at both ends of the middle reverse body through positioning pins 83; the middle reverse body 81 is provided with a bayonet 84 for butt joint with the support rod; the reverse rotating pieces can rotate towards the inside of the exhibition frame around the positioning pins, and the rotating direction of the reverse rotating pieces 82 is opposite to the rotating direction of the folding piece on the middle connecting piece 4. As shown in Figure 11 : the middle reverse connecting piece 8 is a normal hinge structure, and one end of the adjacent long side frame 1 on the same side is respectively connected with the reverse rotating piece 82 through insertion; as shown in Figure 10 and Figure 11 : after unfolding, the left and right middle reverse connecting pieces 8 are fixedly connected through the support rod 5. When folding, the two long side frames on the same side are respectively folded towards the inside of the exhibition frame, and finally the two long side frames after folding through the middle reverse connecting piece 8 are stacked together to form a double-layer structure; but the same as embodiment 1, the two side frames after folding are in a staggered structure.

[0060] The clamping end 43 structure on the middle body is similar to the bayonet 84 structure on the middle reverse body 81.

[0061] Through the embodiment and the drawings, it can be seen that the whole folding and whole unfolding of the display rack is realized, the fast mounting and fast collecting purposes are achieved, the use requirements in the exhibition display field are greatly met, the length of the frame is not limited, and the use is flexible. In addition, the upper and lower short frame structures in the application can be different, and are determined according to the use requirements.

[0062] Embodiment 3

[0063] As shown in Figure 13 and Figure 14 Based on the embodiment 1, the power connection structure between the two light assemblies mounted in the long frame section is optimized in the embodiment, so that the two light assemblies can realize the electric series connection structure after the frame is unfolded. Specifically, as shown in Figure 15 , a conductive column 45 penetrating the middle body is fixed on the middle body 41 of the middle connecting piece, and the two ends of the conductive column 45 slightly exceed the two side end faces of the middle body. As shown in , a conductive terminal 61 is arranged on the side of the light assembly 6 close to the middle connecting piece, and two conductive columns 611 extending to the side of the middle connecting piece and exceeding the conductive terminal are arranged in the conductive terminal 61 through a spring 612; the conductive column 45 and the conductive column 611 correspond in position and contact with each other after the long frame is unfolded; at the same time, the reliability of the contact between the conductive column 45 and the conductive column 611 is ensured due to the existence of the spring 612. When the display rack is folded, the conductive column and the conductive column are separated, and the safety between the two light assemblies is ensured.

[0064] In the embodiment, the light assembly fixed in the mounting groove is a lamp strip. In the embodiment, a tensioning strip 421 is additionally arranged on the folding piece of the middle connecting piece, so as to ensure the fastening of the long frame section 11.

[0065] The terms “vertical”, “horizontal”, “left”, “right”, “high”, “low” and similar expressions used in the present text are only for detailed description of the embodiment and the drawings, so that the design idea of the application can be better understood.

[0066] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A folding display stand, comprising a frame, said frame including a pair of short sidewalls and at least a pair of long sidewalls, characterized in that, Also includes: The corner connector includes an upper corner connector and a lower corner connector. The two ends of the long frame are connected to the upper and lower short frames respectively via the upper and lower corner connectors. A middle connector is located in the middle of the long frame and divides it in two. The long frame can be folded from the middle inwards through the middle connector. The corner connector allows the two long frames to be folded in half and then staggered, stored on the lower short frame. The lower corner connector includes a lower corner body, a lower pin, and a lower rotating component. The lower corner body has a connecting end face one and a connecting end face two connected at a 90-degree angle. The connecting end face one has a directly formed insertion boss for connecting with the short frame. The connecting end face two is connected via the lower pin... The shaft is hinged to the lower rotating component, and the movable end of the lower rotating component also has a connecting boss that is connected to the long frame segment. This allows the lower rotating component to drive the connected long frame segment to rotate 90 degrees around the lower pin shaft towards the inside of the frame. The lower pin shaft is installed at the connection end between the corner body and the rotating component with one end as a reference and the other end pointing downwards and towards the inside of the frame. Specifically, the line where the lower pin shaft is located forms an angle α with the horizontal plane and an angle β with the vertical plane. The two angles are less than 10 degrees. The upper corner connector includes the upper corner body, the upper pin shaft, and the upper rotating component. The upper corner connector and the lower corner connector are installed at the upper and lower ends of the long frame respectively to form an axisymmetric structure.

2. The folding display stand according to claim 1, characterized in that: The downward tilt angle α of the lower pin axis is the same as the tilt angle β in the direction towards the inside of the display frame.

3. The folding display stand according to claim 1, characterized in that: The intermediate connecting component includes an intermediate body and folding components that are hinged to both ends of the intermediate body by pins. The folding components can rotate around the pins toward the outside of the display frame.

4. The folding display stand according to claim 3, characterized in that: It also includes a support rod, the two ends of which are snapped together with the middle body to limit the folding of the long frame after it is unfolded.

5. The folding display stand according to claim 3, characterized in that: Two insertion holes are provided along the length direction on the inner end faces of the short frame and the long frame, and an installation groove is formed between the two insertion holes.

6. The folding display stand according to claim 5, characterized in that: The mounting slot is equipped with a lighting component.

7. The folding display stand according to claim 1, characterized in that: The device is equipped with a middle reverse connector and a support rod for connecting two or more pairs of long frame sides. The middle reverse connector includes a middle reverse body and reverse rotating parts that are hinged to both ends of the middle reverse body by positioning pins. The reverse rotating parts can rotate around the positioning pins toward the inside of the display frame. One end of each adjacent long frame side on the same side is inserted and connected to the reverse rotating parts. The middle reverse connectors at corresponding positions on the left and right sides are connected by a support rod to limit the rotation of the middle reverse connectors after the display frame is unfolded.

8. The folding display stand according to claim 3, characterized in that: The height of the middle body is adapted to the height of the long frame after it is folded in half.

9. The folding display stand according to claim 6, characterized in that: The lighting component has a conductive terminal on the side near the intermediate connector. The conductive terminal has a conductive post extending towards the intermediate connector and beyond the conductive terminal via a spring. The intermediate body of the intermediate connector has a conductive post that penetrates through the intermediate body, corresponding to the position of the conductive post. After the display stand is unfolded, the lighting components on both sides of the intermediate connector are electrically connected through the contact connection between the conductive post and the conductive post.

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