A foldable and retractable card holder

Abstract

The utility model relates to a kind of holding plaque ware that can be folded and pasted, for the placement of sheet-shaped plaque, including holding plaque frame and blocking plaque restraint part, the holding plaque frame includes multiple sequentially connected assembly unit plate from left to right along length direction, first rotating connection structure or first detachable connecting structure is equipped between adjacent two assembly unit plates to be connected, and first rotating connection structure makes two assembly unit plates can be relatively turned over, and first detachable connecting structure makes two assembly unit plates can be mutually detached;The assembly unit plate includes vertical plate part, and part or all assembly unit plate is also provided with the supporting plate part fixed to the front side of vertical plate part;The blocking plaque restraint part is detachably installed on holding plaque frame, and between blocking plaque restraint part and the front side of the vertical plate part of each assembly unit plate, the restraint space for inserting sheet-shaped plaque can be formed on the upper side of supporting plate part.

Description

Technical Field

[0001] This utility model relates to the field of entertainment equipment technology, specifically to a foldable and retractable card holder. Background Technology

[0002] Poker games, due to their simple rules, high entertainment value, and low requirements for venue and equipment, have become an important activity for daily entertainment, rehabilitation training, and competitive games. Traditional card-holding methods rely on one hand holding the cards and the other hand taking and playing them. This operation mode places high demands on upper limb flexibility, grip strength, and hand-eye coordination. However, against the backdrop of an aging society, the number of patients with stroke, cerebral palsy, unilateral upper limb amputation, or fracture fixation is increasing year by year. These individuals generally have unilateral limb dysfunction, making it impossible to complete the hand-eye coordination card-holding action. Furthermore, in games with a large number of cards, such as Guandan and Shuangsheng, even healthy players often experience difficulty holding the cards with one hand due to the large number of cards, leading to card slippage or information leakage, severely impacting the gaming experience. Therefore, providing an assistive device for special groups and specific scenarios to achieve stable card-holding has become an urgent need.

[0003] Various playing card holders have been developed in the prior art, and their basic structure mostly consists of a tray and elastic pressure plates. For example, the single-handed playing card holder with application number CN201721337523.0 uses multiple spring pressure plates to press the playing cards firmly onto the upper or lower tray. When a large number of playing cards need to be held, existing card holders are generally bulky, occupying a lot of space. Their rigid design means they remain unfolded even when not in use, causing inconvenience in storage, carrying, and use. Therefore, how to achieve miniaturization, lightweighting, and foldability of card holders has become an urgent problem to be solved in this field. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a foldable card holder that can be unfolded to hold multiple flat cards when in use, and can be folded up to reduce its size when not in use, making it convenient for storage, carrying and use.

[0005] To achieve the above objectives, this utility model provides a foldable and retractable card holder for placing sheet-shaped cards. It includes a card holder frame and a card-blocking constraint. The card holder frame comprises multiple sequentially connected assembly unit plates along its length from left to right. Adjacent assembly unit plates are connected by a first rotating connection structure or a first detachable connection structure. The first rotating connection structure allows the two assembly unit plates to rotate relative to each other, and the first detachable connection structure allows the two assembly unit plates to be separated from each other. Each assembly unit plate includes a standing plate portion, and some or all of the assembly unit plates also have a support plate portion fixed to the front side of the standing plate portion. The card-blocking constraint is detachably installed on the card holder frame, and a constraint space for inserting sheet-shaped cards is formed between the card-blocking constraint and the front side of the standing plate portion of each assembly unit plate, located on the upper side of the support plate portion.

[0006] Furthermore, the first rotating connection structure includes a first bushing and a first rotating shaft disposed in the first bushing, with the first bushing and the first rotating shaft respectively disposed on two different assembly unit plates.

[0007] Furthermore, the number of assembly unit boards in the holding frame is 2n+1, where n≥1. The assembly unit board adjacent to the central assembly unit board can be flipped to the back side of the central assembly unit board through the first rotational connection structure, and the two are perpendicular to each other. When n=2, two adjacent assembly unit boards located on one side of the central assembly unit board can be rotated to their back sides to abut each other through the first rotational connection structure.

[0008] Furthermore, the first detachable connection structure includes a first connection slot and a first connection strip respectively disposed on the two assembly unit plates. The first connection strip is inserted into the first connection slot and can be detached from the first connection slot.

[0009] Furthermore, the first connecting slot is disposed on the left or right side of the upright plate of the assembly unit plate, and the first connecting strip is disposed on the left or right side of the upright plate of the assembly unit plate.

[0010] Furthermore, at least one assembly unit plate in the card holder is provided with a retractable insert or a retractable slot on its back side, and the first connecting slot of the assembly unit plate can be installed on the retractable insert or the first connecting insert can be installed in the retractable slot.

[0011] Furthermore, the barrier restraint is a rope, and the leftmost and rightmost assembly unit plates of the sign holder are respectively provided with a left rope connection structure and a right rope connection structure. The rope is detachably connected to the left rope connection structure and the right rope connection structure, and the rope is in a stretched state.

[0012] Furthermore, the rope is an elastic rope and is looped, with its two ends respectively fitted onto the left rope connection structure and the right rope connection structure, and is in an elastically taut state.

[0013] Furthermore, the front of the upright plate of all the assembled unit plates in the card holder frame constitutes the back of the card holder frame, and the back of the card holder frame is an arc-shaped surface that protrudes forward in the middle in the length direction.

[0014] Furthermore, the number of trays in the assembly unit plate of the card holder is m, where m ≥ 2, and the m trays are set at different heights; the m trays in different assembly unit plates are kept in a one-to-one correspondence, and the corresponding trays in each assembly unit plate form a long strip support, so that the card holder forms m long strip supports at different heights; the number of card blocking restraints is m, which are respectively set on the upper side of the m long strip supports.

[0015] Furthermore, it also includes a support frame, wherein a second rotatable connection structure is provided between the support frame and one assembly unit plate of the card holder, allowing the support frame and the assembly unit plate to be rotated relative to each other, or a second detachable connection structure is provided between the support frame and one assembly unit plate of the card holder, allowing the support frame and the assembly unit plate to be detached from each other.

[0016] As described above, the license holder of this utility model has the following beneficial effects:

[0017] 1. When in use, it can unfold to hold multiple flat playing cards; when not in use, it can be folded up to reduce its size, making it convenient for storage, carrying, and use.

[0018] 2. The adjacent assembly unit panels in the card holder are connected by a first rotating connection structure or a first detachable connection structure. The assembly unit panels can be stacked and folded together by rotating or disassembling and stacking. The card holder is easy to assemble and disassemble, and the unfolded working state and the folded state are stable and reliable.

[0019] 3. By setting ropes as a barrier restraint, and using elastic loop ropes, installation is convenient. It can not only stabilize the card holder in the working state and stably restrain different numbers of sheet cards, but also serve as a binding rope after the card holder and support frame are retracted, further stabilizing the retracted state of the card holder.

[0020] 4. By setting multiple tray sections of different heights in the assembly unit plate, multiple long strips of varying heights can be formed in the card holder, and multiple card-blocking restraints can be set in conjunction, so that multiple rows of flat cards can be placed. Attached Figure Description

[0021] Figure 1This is a front structural diagram of the first embodiment of the license holder of this utility model.

[0022] Figure 2 This is a schematic diagram of the operation of the license holder according to Embodiment 1 of this utility model.

[0023] Figure 3 This is a schematic diagram of the rotation and retraction process of the license holder according to Embodiment 1 of this utility model.

[0024] Figure 4 This is a schematic diagram of the folded state of the license holder according to Embodiment 1 of this utility model.

[0025] Figure 5 This is a front structural diagram of Embodiment 2 of the license holder of this utility model.

[0026] Figure 6 This is a schematic diagram of the back structure of Embodiment 2 of the license holder of this utility model.

[0027] Figure 7 This is a schematic diagram of the operation of the second embodiment of the license holder of this utility model.

[0028] Figure 8 This is a schematic diagram illustrating the disassembly and assembly process of the license holder in Embodiment 2 of this utility model.

[0029] Figure 9 This is a schematic diagram of the folded state of the license holder according to Embodiment 2 of this utility model.

[0030] Figure 10 This is a schematic diagram of the back structure of Embodiment 3 of the license holder of this utility model.

[0031] Figure 11 This is a schematic diagram of the support frame rotating to separate from the assembly unit plate in Embodiment 3 of the present invention.

[0032] Figure 12 This is a schematic diagram of the rotation and retraction process of the license holder in Embodiment 3 of this utility model.

[0033] Figure 13 This is a schematic diagram of the folded state of the license holder according to Embodiment 3 of this utility model.

[0034] Figure 14 This is a schematic diagram of the structure of the card holder in this utility model when the back of the card holder is curved.

[0035] Explanation of icon numbers

[0036] 1. Flat playing cards

[0037] 2. License holder

[0038] 21 Assembled Unit Panels

[0039] 211 Vertical board department

[0040] 212 Pallet Section

[0041] 22 First Rotary Connection Structure

[0042] 221 First Shaft

[0043] 222 First bushing

[0044] 23 First detachable connection structure

[0045] 231 First connecting strip

[0046] 232 First Connecting Slot

[0047] 233 Limit Block

[0048] 24. Left rope connection structure

[0049] 25. Right rope connection structure

[0050] 26. Gather the inserts

[0051] 3. Ropes

[0052] 4. Support frame

[0053] 41 Card slot

[0054] 5 Second Rotary Connection Structure

[0055] 51 Second Shaft

[0056] 52 Second bushing

[0057] 6 Second detachable connection structure

[0058] 61 Second connecting strip

[0059] 62 Second connection slot Detailed Implementation

[0060] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0061] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0062] See Figures 1 to 13 This utility model provides a foldable card holder for placing sheet-shaped playing cards 1, wherein the sheet-shaped playing cards 1 can be playing cards, long strips of cards, or simple mahjong tiles printed on paper, etc. The card holder includes a card holder frame 2 and a card blocking constraint. The card holder frame 2 includes multiple sequentially connected assembly unit plates 21 along its length from left to right. A first rotating connection structure 22 or a first detachable connection structure 23 is provided between two adjacent assembly unit plates 21 for connection. The first rotating connection structure 22 allows the two assembly unit plates 21 to be rotated relative to each other, and the first detachable connection structure 23 allows the two assembly unit plates 21 to be separated from each other. The assembly unit plate 21 includes a standing plate portion 211, and some or all of the assembly unit plates 21 also have a support plate portion 212 fixed to the front side of the standing plate portion 211. The card blocking constraint is detachably installed on the card holder frame 2, and a constraint space for inserting the sheet-shaped card 1 can be formed between the card blocking constraint and the front side of the standing plate portion 211 of each assembly unit plate 21. Thus, when the sheet-shaped card 1 is placed, it is constrained between the card blocking constraint and the standing plate portion 211 and placed on the support plate portion 212.

[0063] The main working principle of the license holder involved in this utility model is as follows: See Figure 1 , Figure 2 , Figure 6 and Figure 7At this point, the card holder is assembled and in its deployed working state. The various assembly unit plates 21 of the card holder frame 2 are connected side-by-side in sequence. Each assembly unit is flattened, forming a long, flat or curved plate structure. Preferably, the front of the upright portion 211 of each assembly unit plate 21 is flush, but there can be a height difference. The support portion 212 of each assembly unit plate 21 is also preferably at the same height, but there can also be a height difference, so that the support portion 212 of each assembly unit plate 21 forms a long, narrow support for supporting a row of sheet-like cards 1. When grabbing a card, the sheet-like card 1 is inserted from top to bottom into the constraint space between the card-blocking constraint and the upright portion 211, and placed on the support portion 212. The length of the card holder frame 2 can accommodate multiple sheet-like cards 1 placed side-by-side. Each assembly unit plate 21 in the card holder 2 can be provided with a standing plate 211. When the width of a certain assembly unit plate 21 is relatively small (less than the width of a sheet card 1), the assembly unit plate 21 may not have a standing plate 211. The bottom of the sheet card 1 located at the assembly unit plate 21 can be placed on the standing plate 211 of the assembly unit plates 21 connected on the left and right sides, which can also smoothly achieve the stable placement of the sheet card 1. After the card holder is used, the card blocking restraint is removed from the card holder 2, and then the assembly unit plates 21 of the card holder 2 are stacked and folded up, see [reference]. Figure 4 and Figure 9 The card holder 2 can be equipped with one or both of the first rotating connection structure 22 and the first detachable connection structure 23. However, only the first rotating connection structure 22 or only the first detachable connection structure 23 is provided between two adjacent assembly unit plates 21. When the card holder 2 is closed, if the first rotating connection structure 22 is provided between two adjacent assembly unit plates 21, the two assembly unit plates 21 are flipped so that their backs are close together, forming a stacked posture. See [reference needed]. Figure 4 As shown, if there is a first detachable connection structure 23 between two adjacent assembly unit panels 21, then the two assembly unit panels 21 are disassembled and separated, and then the two assembly unit panels 21 are stacked together, see [reference]. Figure 9 As shown. Ultimately, the individual assembly unit panels 21 can be stacked together to achieve a folded state. They can then be tied with rope or placed in bags, boxes, or other containers, effectively reducing the size of the card holder 2 for easy carrying. For reuse, the individual assembly unit panels 21 are reassembled to obtain the card holder 2 in its unfolded working state, and the card-blocking restraints are installed on the card holder 2.

[0064] See Figures 1 to 13 The present invention will be further described below with reference to several specific embodiments:

[0065] Example 1:

[0066] See Figures 1 to 4This is a schematic diagram of the structure of Embodiment 1. In this embodiment, as a preferred design, each of the two adjacent assembly unit plates 21 in the card holder 2 is provided with a first rotating connection structure 22. The first rotating connection structure 22 includes a first bushing 222 and a first rotating shaft 221 disposed in the first bushing 222. The first bushing 222 and the first rotating shaft 221 are respectively disposed on two different assembly unit plates 21, wherein the axial direction of the first rotating shaft 221 is along the height direction of the card holder 2 and parallel to the left and right sides of the assembly unit plate 21. One or more first bushings 222 and first rotating shafts 221 can be provided. By rotating the first rotating shaft 221 in the first bushing 222, the two assembly unit plates 21 can rotate relative to each other. In other embodiments, the first rotating connection structure 22 can also adopt a suitable existing structure, such as a hinge structure.

[0067] In this embodiment, as a preferred design, see [reference needed]. Figure 3 and Figure 4 The number of assembly unit plates 21 in the holding frame 2 is 2n+1, where n≥1. The assembly unit plate 21 adjacent to the central assembly unit plate 21 (the (n+1)th assembly unit plate 21 from the left) can be flipped to the back side of the central assembly unit plate 21 via the first rotating connection structure 22, with the two perpendicular to each other. When the number of assembly unit plates 21 is 5, that is, when there are two assembly unit plates 21 on the left and right sides of the central assembly unit plate 21, two adjacent assembly unit plates 21 on one side of the central assembly unit plate 21 can be rotated to their back sides to abut against each other via the first rotating connection structure 22. See [reference needed]. Figure 4 As shown, in the folded state, the leftmost assembly unit 21 can rotate to abut against the back side of the adjacent assembly unit 21 (the second assembly unit 21 from the left), and the rightmost assembly unit 21 can rotate to abut against the back side of the adjacent assembly unit 21 (the second assembly unit 21 from the right). The second assembly unit 21 from the left and the second assembly unit 21 from the right are rotated to the back side of the central assembly unit 21 and kept vertical. This way, all four stacked assembly unit 21s are located on the back side of the central assembly unit 21, allowing for better folding and folding of the assembly unit 21 of the card holder 2, reducing its volume. In other embodiments, the number of assembly unit 21s in the card holder 2 can also be other numbers, and multiple assembly unit 21s can be folded and pasted in a continuous Z-shaped pattern.

[0068] In this embodiment, as a preferred design, see [reference needed]. Figure 3 and Figure 4The sign-holding frame 2 has a rope 3 as the restraining component. The leftmost and rightmost assembly unit plates 21 of the sign-holding frame 2 are respectively equipped with a left rope connection structure 24 and a right rope connection structure 25. The rope 3 is detachably connected to the left and right rope connection structures 24 and 25, and the sign-holding restraining component is in a stretched state. At this time, the tension of the rope 3 can pull the leftmost and rightmost assembly unit plates 21 of the sign-holding frame 2 towards the center, causing adjacent assembly unit plates 21 to abut against each other, improving the stability of the sign-holding frame 2. Preferably, when the sign-holding frame 2 is in the unfolded working state, abutting surfaces are provided on the sides of adjacent assembly unit plates 21. At this time, they will no longer rotate relative to each other towards the front side. Each assembly unit is flattened, and under the tension of the rope 3, adjacent assembly unit plates 21 are prevented from flipping backward, thus better ensuring that the sign-holding frame 2 maintains a stable unfolded working state.

[0069] In this embodiment, as a preferred design, see [reference needed]. Figure 1 and Figure 2 Rope 3 is an elastic rope and is looped. Both ends of rope 3 are respectively fitted onto the left rope connection structure 24 and the right rope connection structure 25, and are in a taut, elastic state. This facilitates the assembly and disassembly of rope 3 and better ensures the card holder 2 maintains a stable deployed working state. The front of the upright plate portion 211 of all the assembly unit plates 21 in the card holder 2 forms the backrest of the card holder 2, used to abut against the back of the sheet-like card holder 1. The backrest of the card holder is an arc-shaped surface that protrudes forward in the middle along its length. See [reference needed]. Figure 14 This allows the elastic rope to better adhere to the back of the card holder under its elastic force, thus better stabilizing the sheet card 1. In other embodiments, the back of the card holder can also be a flat surface. Simultaneously, the elastic rope can deform, meaning the constraint space between it and the front of the upright plate 211 can vary. This allows for the insertion of different numbers of sheet cards 1 while the elastic rope 3 provides a stable constraint force, confining the sheet card 1 within the constraint space. More preferably, the left rope connection structure 24 is located on the left side of the leftmost assembly unit plate 21, and the right rope connection structure 25 is located on the right side of the rightmost assembly unit plate 21, facilitating the installation of the rope 3 and providing the longest possible constraint space. Furthermore, using the elastic rope 3 as a card-blocking constraint, the rope 3 can also wrap around the folded card holder 2 after the various assembly unit plates 21 of the card holder 2 are stacked together, binding all the assembly unit plates 21 together. (See [reference]). Figure 4 This allows rope 3 to serve multiple purposes and simplifies the structure.

[0070] In this embodiment, the adjacent assembly unit plates 21 are abutted against each other when the card holder 2 is in the unfolded working state by the rope 3 to maintain stability and prevent the adjacent assembly unit plates 21 from rotating relative to each other on the front side or the back side. In other embodiments, the relative stability of the position between the adjacent assembly unit plates 21 connected by the first rotating connection structure 22 can also be achieved in other ways. For example, the first rotating connection structure 22 can have a certain friction damping function. Specifically, it can create a certain friction between the first rotating shaft 221 and the first bushing 222. In this way, the user can apply a certain rotational force to overcome the friction, and the adjacent assembly unit plates 21 can rotate through the first rotating connection structure 22. When no rotational force is applied, the adjacent assembly unit plates 21 will not rotate relative to each other, thereby maintaining the stability of their relative positions. In this case, the tension of the rope 3 can be eliminated to keep the card holder 2 in a stable unfolded working state. The rope 3 plays an auxiliary stabilizing role.

[0071] In this embodiment, as a preferred design, see [reference needed]. Figure 3 and Figure 4 The device also includes a support frame 4. A second rotating connection structure 5 is provided between the support frame 4 and one assembly unit plate 21 of the card holder 2, allowing the support frame 4 and the assembly unit plate 21 to rotate relative to each other. The support frame 4 can be configured as a handle for easy gripping or as a seat for easy placement on a table, depending on usage requirements. The support frame 4 is preferably connected to the assembly unit plate 21 in the center of the card holder 2. The second rotating connection structure 5 can adopt a structure similar to the first rotating connection structure 22, including a second bushing 52 and a second rotating shaft 51 disposed within the second bushing 52. The second rotating shaft 51 and the second bushing 52 are respectively disposed on the support frame 4 and the assembly unit plate 21, with the first rotating shaft 221 axially along the left-right direction of the card holder 2. During normal use, the support frame 4 rotates to a position below the assembly unit plate 21. (See attached diagram.) Figure 2 At this time, the stability of the relative position between the support frame 4 and the assembly unit plate 21 can be maintained in the same way as that between adjacent assembly unit plates 21, using the second rotating connection structure 5 with a certain friction damping effect, or by using the weight of the card holder 2 itself to stabilize it on the support frame 4. When the card holder needs to be retracted, the support frame 4 is rotated to the front side close to the assembly unit plate 21. At the same time, in order to facilitate the approach of the support frame 4 to the front of the assembly unit plate 21, the front of the assembly unit plate 21 may not have a support plate portion 212, and the width of the assembly unit plate 21 is relatively small, smaller than the width of a single sheet card holder 1.

[0072] In this embodiment, as a preferred design, there is one support plate 212 in the assembly unit plate 21, and it is located on the lower side of the upright plate 211. The support plates 212 of each assembly unit plate 21 correspond to each other, forming a long strip support, so that the card holder 2 can hold a row of sheet cards 1. As a preferred design, the number of support plates 212 in the assembly unit plate 21 of the card holder 2 is m, where m≥2. The m support plates 212 are set at different heights, and the distance between adjacent support plates 212 is greater than the height of the sheet cards 1. At the same time, the multiple support plates 212 in different assembly unit plates 21 are kept one-to-one, and the corresponding support plates 212 in each assembly unit plate form a long strip support, that is, the long strip support is formed by multiple support plates in the left-right direction. The card holder 2 is composed of a broken tray section 212, wherein the upper surfaces of each tray section 212 forming the elongated tray are preferably at the same height, thereby forming m elongated trays at different heights in the card holder. Each elongated tray can hold a row of sheet cards 1. Correspondingly, there are m card-blocking constraints, which are respectively set on the upper side of the m elongated trays. The elongated trays cooperate with the card-blocking constraints on their upper sides, and the card-blocking constraints are used to block the row of sheet cards 1 on the corresponding elongated tray. In this way, the card holder 2 can hold multiple rows of sheet cards 1, and the card storage capacity is large.

[0073] Example 2:

[0074] See Figures 5 to 9 The diagram below shows the structure of Embodiment 2. In this embodiment, as a preferred design, a first detachable connection structure 23 is provided between adjacent assembly unit plates 21 in the card holder 2 for connection. The first detachable connection structure 23 includes a first connection slot 232 and a first connection strip 231 respectively provided on the two assembly unit plates 21. The first connection strip 231 is inserted into the first connection slot 232 and can be removed from the first connection slot 232. When the first connection strip 231 is removed from the first connection slot 232, the two adjacent assembly unit plates 21 can be separated.

[0075] In this embodiment, see Figure 5 , Figure 6 and Figure 7As a preferred design, the first connecting slot 232 is disposed on the left or right side of the upright plate portion 211 of the assembly unit plate 21, and the first connecting strip 231 is disposed on the left or right side of the upright plate portion 211 of the assembly unit plate 21, facilitating insertion and ensuring alignment of the front faces of adjacent upright plate portions 211 at the mating point. Preferably, the first connecting slot 232 extends linearly along the height direction of the upright plate portion 211 and penetrates the upper and lower end faces of the upright plate portion 211. This ensures a more stable and reliable connection effect for the first detachable connecting structure 23. Preferably, a limiting block 233 is provided at the bottom of the first connecting strip 231. During installation, the first connecting strip 231 is inserted into the first connecting slot 232 from bottom to top, and the bottom periphery of the first connecting slot 232 abuts against the limiting block 233, thus providing a limiting function. Friction can also exist between the first connecting strip 231 and the first connecting slot 232, stabilizing the vertical position of adjacent assembly unit panels 21. In other embodiments, the first connecting strip 231 can also be inserted laterally into the first connecting slot 232 in the left-right direction, serving both a connecting function and stabilizing the vertical position of adjacent assembly unit panels 21. The first detachable connection structure 23 can also adopt other existing suitable structures, achieving stable and quick connection or separation through various detachable methods such as snap-fit, plug-in, and magnetic attraction.

[0076] In this embodiment, see Figure 6 , Figure 8 and Figure 9As a preferred design, the number of assembly unit plates 21 in the card holder 2 is preferably three or more. One of the assembly unit plates 21 in the card holder 2 has a retractable insert 26 on its back. Preferably, the retractable insert 26 is provided on the assembly unit plate 21 in the center. The number of retractable inserts 26 is equal to the number of the other assembly unit plates 21. Its shape is the same as the first connecting insert 231. That is, the first connecting slot 232 can form an installation fit with the retractable insert 26. In this way, after the other assembly unit plates 21 are removed individually, they can be installed on the retractable insert 26 of this assembly unit plate 21 through the first connecting slot 232. The disassembly and assembly principle of the first connecting slot 232 and the retractable insert 26 is the same as that of the first connecting slot 232 and the first connecting insert 231. Based on a similar principle, the retractable insert 26 can also be partially or completely replaced with a retractable slot. The retractable slot has the same shape as the first connecting slot 232 and can be installed in conjunction with the first connecting insert 231. Correspondingly, after the remaining assembly unit plates 21 are individually removed, they are installed in the retractable slots via the first connecting insert 231. Using the above method, after disassembling all the assembly unit plates 21 of the card holder 2 into individual units, the remaining assembly unit plates 21 are installed on the retractable insert 26 or retractable slot of the central assembly unit plate 21 via the first connecting slot 232 or the first connecting insert 231, making the card holder 2 more stable in the retracted state.

[0077] In this embodiment, see Figure 6 , Figure 7 and Figure 9 As a preferred design, the barrier restraint is also a rope 3, and its structure and installation method are the same as in Embodiment 1, which will not be described in detail here. At the same time, the rope 3 can also be tied to the folded sign holder 2 to provide further stability, which is also the same as in Embodiment 1.

[0078] In this embodiment, see Figure 6 , Figure 8 and Figure 9As a preferred design, the card holder also includes a support frame 4. A second detachable connection structure 6 is provided between the support frame 4 and an assembly unit plate 21 of the card holder 2, allowing the support frame 4 and the assembly unit plate 21 to be detached from each other. The support frame 4 can also be configured as a handle shape for easy gripping or as a seat shape for easy placement on a table, depending on usage needs. The support frame 4 is preferably connected to the assembly unit plate 21 with a retractable insert 26 in the middle of the card holder 2. The second detachable connection structure 6 can adopt a structure similar to the first detachable connection structure 23, including a second connecting slot 62 and a second connecting insert 61. The second connecting insert 61 and the second connecting slot 62 are respectively provided on the support frame 4 and the assembly unit plate 21. The second connecting insert 61 is inserted into the second connecting slot 62 and can be detached from the second connecting slot 62. When the second connecting insert 61 is detached from the second connecting slot 62, the support frame 4 and the assembly unit plate 21 can be separated. Furthermore, in this embodiment, the second connecting strip 61 is disposed on the back of the support frame 4 near its upper end, and the second connecting slot 62 is disposed at the lower end of the assembly unit. When the card holder is in normal use, see... Figure 8 The second connecting strip 61 at the upper end of the support frame 4 is inserted into the second connecting slot 62 at the lower end of the assembly unit plate 21, making installation convenient and ensuring a stable connection. The support frame 4 is located on the lower side of the assembly unit plate 21 for easy use. When the card holder is retracted, the support frame 4 is separated from the assembly unit plate 21 and rotated 180° so that the second connecting strip 61 faces downward. Then, the support frame 4 is placed close to the front of the assembly unit plate 21, and the second connecting strip 61 is inserted into the second connecting slot 62 at the lower end of the assembly unit plate 21, reconnecting it. This connects the support frame 4 to the retracted card holder 2, and the support frame 4 is retracted to the front side of the assembly unit plate 21, further reducing its size. Then, the rope 3 is used to tie the retracted card holder 2 and the support frame 4 for further stability. Meanwhile, to facilitate the proximity of the support frame 4 and the front of the assembly unit plate 21, the front of the assembly unit plate 21 connected to the support frame 4 is not provided with a support plate 212. This allows the support frame 4 and the front of the assembly unit plate 21 to be close together, and the width of the assembly unit plate 21 is smaller than the width of a single sheet of playing card 1, so it does not affect the placement of the sheet of playing card 1. The second detachable connection structure 6 can also adopt other existing suitable structures. Through various detachable methods such as snap-fit, plug-in, and magnetic attraction, a stable and quick connection or separation can be achieved.

[0079] Example 3:

[0080] See Figures 10 to 13This is a schematic diagram of the structure of Embodiment 3. This embodiment is basically the same as Embodiment 1, with the main difference being the connection position between the support frame 4 and the assembly unit plate 21 in the middle of the card holder 2. In this embodiment, the top of the support frame 4 is connected to the top of the assembly unit plate 21 via a second rotating connection structure 5. Specifically, a second bushing 52 is provided at the top of the unit plate 21, and a second rotating shaft 51 is provided at the top of the support frame 4 and installed in the second bushing 52. When the card holder is in normal use, the support frame 4 rotates until its front side abuts against the back of the assembly unit plate 21, and the lower end of the support frame 4 extends beyond the lower side of the assembly unit plate 21 for the user to hold. Preferably, a receiving slot 41 is also provided on the front side of the support frame 4, which is engaged with the back side of the assembly unit plate 21 for greater stability and reliability. When the card holder needs to be folded up, the support frame 4 is rotated above the assembly unit plate 21. Then, each assembly unit plate 21 of the card holder 2 is rotated and folded into a folded state. The support frame 4 is then placed against the upper side of the four folded card holders 2. The rope 3 is then used to tie the folded card holders 2 and the support frame 4 for further stability. In this embodiment, the card holder 2 and the card-blocking constraint are basically the same as in the first embodiment. The difference is that, since the front of the middle assembly unit plate 21 connected to the support frame 4 does not need to contact the support frame 4, a support plate 212 is also provided on the front of this assembly unit plate 21. This allows each assembly unit plate 21 to have a support plate 212, which better facilitates the placement and arrangement of the sheet-shaped card holder 1.

[0081] In other embodiments, as needed, a first rotating connection structure 22 may be provided between some adjacent two assembly unit plates 21 in the card holder 2, and a connection structure 22 may be provided between some adjacent two assembly unit plates 21 to facilitate the folding operation of the card holder 2.

[0082] In other embodiments, the sign-holding restraint can be a thin plate, with an appropriate distance between it and the front of the upright portion 211 of each assembly unit plate 21 in the sign holder 2, thereby forming a restraining space for inserting the sheet-shaped sign 1. The left and right sides of the thin plate are fixedly connected to the leftmost and rightmost assembly unit plates 21 in the sign holder 2, and the connection is detachable. This allows the thin plate to restrain the position of each assembly unit plate 21 in the sign holder 2, preventing adjacent assembly unit plates 21 from rotating relative to each other in the front and back directions, and also preventing adjacent assembly unit plates 21 from separating from each other. For easy folding, the thin plate can be foldable or rollable, or it can be composed of multiple short thin plates spliced ​​together sequentially.

[0083] As can be seen from the above, the license plate holder of this utility model has the following beneficial effects:

[0084] 1. When in use, it can be unfolded to hold multiple flat playing cards; when not in use, it can be folded up to reduce its size, making it convenient for storage, carrying, and use.

[0085] 2. The adjacent assembly unit plates 21 in the card holder 2 are connected by a first rotating connection structure 22 or a first detachable connection structure 23. The assembly unit plates 21 can be stacked and folded together by rotating or disassembling and stacking. The card holder 2 is easy to assemble and disassemble, and its unfolded working state and folded state are stable and reliable.

[0086] 3. By setting rope 3 as a sign-holding constraint, and the rope 3 is an elastic loop rope, which is easy to install, it can not only stabilize the sign holder 2 in the working state, and stably constrain different numbers of good sheet-shaped signs 1, but also serve as a binding rope after the sign holder 2 and support frame are retracted, further stabilizing the retracted state of the sign holder.

[0087] 4. By setting multiple tray sections 212 of different heights in the assembly unit plate 21, multiple long strips of varying heights can be formed in the card holder 2, and multiple card-blocking restraints can be set in conjunction, so that multiple rows of flat cards 1 can be placed.

[0088] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0089] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A foldable and retractable card holder for placing sheet-shaped cards (1), characterized in that: The device includes a card holder (2) and a card-blocking restraint. The card holder (2) comprises multiple sequentially connected assembly unit plates (21) along its length from left to right. Adjacent assembly unit plates (21) are connected by a first rotating connection structure (22) or a first detachable connection structure (23). The first rotating connection structure (22) allows the two assembly unit plates (21) to rotate relative to each other, and the first detachable connection structure (23) allows the two assembly unit plates (21) to be connected to each other. The assembly unit (21) includes a standing plate (211), and some or all of the assembly unit (21) are also provided with a support plate (212) fixed to the front side of the standing plate (211); the sign holder is detachably installed on the sign holder (2), and a constraint space for inserting the sheet sign (1) can be formed between the sign holder and the front side of the standing plate (211) of each assembly unit (21).

2. The foldable and retractable card holder according to claim 1, characterized in that: The first rotating connection structure (22) includes a first bushing (222) and a first rotating shaft (221) disposed in the first bushing (222). The first bushing (222) and the first rotating shaft (221) are respectively disposed on two different assembly unit plates (21).

3. The foldable and retractable card holder according to claim 1 or 2, characterized in that: The number of assembly unit plates (21) in the holding frame (2) is 2n+1, n≥1. The assembly unit plate (21) adjacent to the middle assembly unit plate (21) can be flipped to the back side of the middle assembly unit plate (21) through the first rotating connection structure (22) and the two are perpendicular to each other. When n=2, two adjacent assembly unit plates (21) located on one side of the middle assembly unit plate (21) can be rotated to the back side to abut against each other through the first rotating connection structure (22).

4. The foldable and retractable card holder according to claim 1, characterized in that: The first detachable connection structure (23) includes a first connection slot (232) and a first connection strip (231) respectively disposed on two assembly unit plates (21). The first connection strip (231) is inserted into the first connection slot (232) and can be dislodged from the first connection slot (232).

5. The foldable and retractable card holder according to claim 4, characterized in that: The first connecting slot (232) is disposed on the left or right side of the upright plate (211) of the assembly unit plate (21), and the first connecting strip (231) is disposed on the left or right side of the upright plate (211) of the assembly unit plate (21).

6. The foldable and retractable card holder according to claim 5, characterized in that: At least one assembly unit plate (21) in the card holder (2) is provided with a retractable insert (26) or a retractable slot on its back side. The first connecting slot (232) of the assembly unit plate (21) can be installed on the retractable insert (26) or the first connecting insert (231) can be installed in the retractable slot.

7. The foldable and retractable card holder according to claim 1, characterized in that: The barrier restraint is a rope (3). The leftmost and rightmost assembly unit plates (21) of the sign holder (2) are respectively provided with a left rope connection structure (24) and a right rope connection structure (25). The rope (3) is detachably connected to the left rope connection structure (24) and the right rope connection structure (25). The rope (3) is in a stretched state.

8. The foldable and retractable card holder according to claim 7, characterized in that: The rope (3) is an elastic rope and is looped. The two ends of the rope (3) are respectively fitted onto the left rope connection structure (24) and the right rope connection structure (25) and are in an elastic taut state.

9. The foldable and retractable card holder according to claim 7, characterized in that: The front of the upright plate (211) of all the assembly unit plates (21) in the card holder (2) forms the back of the card holder (2), and the back of the card holder is an arc-shaped surface that protrudes forward in the middle in the length direction.

10. The foldable and retractable card holder according to claim 1, characterized in that: The number of trays (212) in the assembly unit plate (21) of the card holder (2) is m, where m ≥ 2, and the m trays (212) are set at different heights; the m trays (212) in different assembly unit plates (21) are kept in a one-to-one correspondence, and the corresponding trays (212) in each assembly unit plate (21) form a long strip, so that the card holder (2) forms m long strips at different heights; the number of the card blocking constraint members is m, which are respectively set on the upper side of the m long strips.

11. The foldable and retractable card holder according to claim 1, characterized in that: It also includes a support frame (4), and a second rotating connection structure (5) is provided between the support frame (4) and an assembly unit plate (21) of the card holder (2) so that the support frame (4) and the assembly unit plate (21) can be rotated relative to each other, or a second detachable connection structure (6) is provided between the support frame (4) and an assembly unit plate (21) of the card holder (2) so that the support frame (4) and the assembly unit plate (21) can be detached from each other.

Images