Mattress and folding bed

Abstract

The application relates to a mattress and a folding bed, and the mattress comprises a frame, a plurality of V-shaped notches are formed on the upper and lower sides of the frame along the length direction of the frame; a plurality of bagged spring strings are arranged in the frame along the width direction of the frame, each bagged spring string comprises a plurality of bagged spring units which are sequentially connected along the length direction of the frame, one end of two adjacent bagged spring units in each bagged spring string is connected, all the bagged spring units have a space component which is parallel to the length direction of the corresponding bagged spring string, so that each bagged spring string is in a broken line type; and two protective layers are respectively sealed on the opposite sides of the frame in the height direction. The mattress can highly adapt to the folding action of the folding bed, avoids the situation that the whole mattress is raised when being folded, improves the folding effect of the mattress, guarantees the comfort of the mattress, and correspondingly improves the use comfort of the folding bed.

Description

Technical Field

[0001] This application relates to the field of mattress technology, and in particular to a mattress and a folding bed. Background Technology

[0002] A mattress typically consists of a surface layer and an internal spring mesh. The spring mesh is mainly composed of multiple arrayed spring units, which form the main support for the body lying on the mattress. Currently, most mainstream mattresses use spring pockets, each containing a spring, and these spring pockets are arranged in an array to form the spring mesh.

[0003] With the advancement of bed technology, electric beds have emerged, capable of bending to adapt to different lying positions. However, these mattresses currently have some problems: when bent on an electric bed, the mattress cannot follow the bending motion and conform to the bed frame, thus rendering the bending function unusable and compromising comfort. Furthermore, when the electric bed is flattened after bending, the mattress shifts relative to the bed, requiring frequent manual adjustment of their relative positions, impacting user experience and potentially causing long-term damage to the mattress. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application provides a mattress and a folding bed, the mattress structure of which can highly adapt to the folding motion of the folding bed, improving mattress comfort and enhancing the user experience.

[0005] In a first aspect, this application provides a mattress, comprising:

[0006] The frame has multiple V-shaped notches on both the top and bottom sides along its length.

[0007] Multiple pocket spring strings are arranged inside the frame along the width direction of the frame. Each pocket spring string includes multiple pocket spring units connected sequentially along the length direction of the frame. One end of two adjacent pocket spring units in each pocket spring string is connected. All pocket spring units have a spatial component parallel to the length direction of the corresponding pocket spring string, so that each pocket spring string is zigzag-shaped.

[0008] Two protective layers are respectively sealed on opposite sides of the frame in the height direction.

[0009] The mattress according to the first aspect of this application has at least the following beneficial effects:

[0010] The mattress of this application is an improvement on existing folding mattresses. Two pocket spring units are connected at one end and angled, while the other end remains relatively open, making each pocket spring string zigzag-shaped. This allows sufficient deformation space between adjacent pocket spring units when each string bends, facilitating adaptation to the bending motion of the folding mattress and preventing bulging during bending, thus improving the mattress's bending performance and ensuring comfort. Furthermore, this mattress also allows for rapid recovery when flattened. Multiple V-shaped notches along the top and bottom sides of the mattress's edge further adapt to bending, preventing outward bulging that would affect the mattress's appearance.

[0011] In some embodiments, the protective layer is connected to the corresponding end of the bag spring unit by a wire stitching connection.

[0012] In some embodiments, each of the bag spring units includes a bag body and a spring body, the spring body being installed inside the bag body, and one end of the bag body of two adjacent bag spring units being connected so that the two adjacent bag spring units are arranged in a V-shape or an inverted V-shape.

[0013] In some embodiments, a V-shaped clearance is formed on the non-connected end between two adjacent pocket spring units, and the two sides of the V-shaped clearance are connected by a triangular fabric; when the pocket spring string is laid flat, the side length of the edge of the unstitched side of the triangular fabric is greater than the opening width of the V-shaped clearance.

[0014] In some embodiments, the outer diameter of the middle portion of the spring body is larger than the outer diameters of both ends of the spring body.

[0015] In some embodiments, the bag bodies of two adjacent bag spring units are connected by stitching.

[0016] In some embodiments, the frame includes a pair of parallel short guard edges and a pair of parallel long guard edges, the protective layer is attached to the corresponding two side edges of all the short guard edges and the long guard edges, and the V-shaped notch is provided on the two sides of the long guard edges that are attached to the protective layer.

[0017] In some embodiments, a clearance groove is provided at the bottom of the V-shaped notch.

[0018] In some embodiments, connecting skirts are provided on the periphery of both protective layers, and the connecting skirts are connected to the short protective edge and the long protective edge.

[0019] Secondly, this application provides a folding bed, which includes the mattress described above.

[0020] The bending bed according to the second aspect of this application has at least the following beneficial effects:

[0021] The folding bed of this application, because it is equipped with the aforementioned mattress, also has the same technical effect as the mattress, that is, the mattress can be highly adapted to the bending action of the folding bed, avoiding the entire mattress from bulging when bending, improving the bending effect of the mattress, ensuring the comfort of the mattress, and correspondingly improving the comfort of using the folding bed.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a schematic diagram of the mattress structure according to an embodiment of this application.

[0025] Figure 2 This is an exploded view of the mattress structure according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the structure of the bagged spring string according to an embodiment of this application.

[0027] Figure 4 This is another structural schematic diagram of the bagged spring string according to an embodiment of this application.

[0028] Figure 5 This is a partial structural diagram of the long edge of an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 100 for the border; 110 for the V-shaped notch; 120 for the short guard edge; 130 for the long guard edge; 140 for the clearance groove; 200 for the protective layer; 210 for the connecting skirt; 300 for the pocket spring string; 310 for the pocket spring unit; 311 for the bag body; 312 for the spring body; 313 for the V-shaped clearance opening; and 314 for the triangular fabric. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figures 1 to 5 This application provides a mattress, which includes a frame 100, a plurality of pocket springs 300 and two protective layers 200.

[0037] The frame 100 has multiple V-shaped notches 110 on both the top and bottom sides along its length.

[0038] Multiple pocket spring strings 300 are arranged inside the frame 100 along its width. Each pocket spring string 300 includes multiple pocket spring units 310 connected sequentially along the length of the frame 100. One end of two adjacent pocket spring units 310 within each pocket spring string 300 is connected. All pocket spring units 310 have a spatial component parallel to the length of the corresponding pocket spring string 300, so that each pocket spring string 300 is zigzag-shaped. Two protective layers 200 are respectively sealed on opposite sides of the frame 100 in the height direction.

[0039] Specifically, in this application, all the bag spring units 310 in each bag spring string 300 are inclined, that is, inclined along the length direction of the bag spring string 300, and the entire bag spring string 300 is zigzag-shaped, so that the entire bag spring string 300 has enough space to deform when it is bent along the length direction.

[0040] It should be noted that multiple pocket spring strings 300 are arranged side by side to form the bed net structure. Each pocket spring string 300 can be connected and fixed together by sewing with fabric strips or by other structures to form a whole.

[0041] In some embodiments, the bed net formed by multiple pocket spring strings 300 arranged side by side can each constitute a single pocket spring string 300 structural design, whether in the horizontal or vertical direction. That is, each pocket spring unit 310 is spatially inclined and simultaneously possesses spatial components in both the horizontal and vertical directions. The horizontal and vertical directions are further defined by... Figure 1 The orientation of the three-dimensional space in which it is located is taken as the reference. Similarly, in this application, the orientations of the top and bottom ends are also based on the attached... Figure 1 The orientation of the three-dimensional space in question is used as a reference, primarily for the purpose of illustrating the opening direction of the V-shaped notch 110. In this application, the V-shaped notch 110 is actually formed on the upper and lower sides of the long side of the frame 100. The opening direction of the V-shaped notch 110 is the same as the bending direction of the bag spring string 300.

[0042] Furthermore, in this application, both the frame 100 and the protective layer 200 are connected to each pocket spring unit 310. This connection can be achieved through stitching or metal fasteners, depending on the specific needs. The purpose is to prevent the mattress from becoming loose and delaminated during deformation. For example, in one embodiment, the protective layer 200 is connected to one end of the pocket spring unit 310 via stitching. Connections between other structures are not detailed here.

[0043] The mattress of this application embodiment is an improvement on existing folding mattresses. Two pocket spring units 310 are connected at one end and angled, while the other end remains relatively open, making each pocket spring string 300 integrally zigzag-shaped. This allows sufficient deformation space between adjacent pocket spring units 310 when each pocket spring string 300 bends, facilitating adaptation to the bending action of the folding bed and preventing the entire mattress from bulging during bending, thus improving the bending effect and ensuring mattress comfort. Simultaneously, the mattress of this application also facilitates rapid recovery when laid flat. Multiple V-shaped notches 110 are provided on both the upper and lower sides along the length of the mattress frame to further adapt to bending, preventing outward bulging during deformation and affecting the mattress's aesthetics.

[0044] See Figure 3 and Figure 4In order to enable the entire bag spring string 300 to bend better, in some embodiments of this application, the bag spring unit 310 includes a bag body 311 and a spring body 312. The spring body 312 is installed inside the bag body 311, and one end of the bag body 311 of two adjacent bag spring units 310 is connected so that the two adjacent bag spring units 310 are arranged in a V-shape or an inverted V-shape.

[0045] Specifically, the bag body 311 forms a sealed cavity by hot-pressing the edges, and the spring body 312 is a cylindrical helical spring installed in the sealed cavity. This drum-shaped structure can enhance the support of the spring body 312, while reducing the friction between the two ends and the bag body 311, thus extending the service life.

[0046] All pocket spring units 310 are connected end-to-end in a zigzag shape, providing sufficient bending space when the pocket spring string 300 is subjected to bending pressure on the bending bed. One end of each pocket spring unit 310 provides space for the movement of the adjacent pocket spring unit 310, thus preventing each pocket spring unit 310 from interfering with each other and facilitating the bending of the pocket spring string 300.

[0047] In actual use, each bag spring unit 310 is spindle-shaped, meaning that the outer diameters at both ends of the bag spring unit 310 are smaller than the outer diameter in the middle. This facilitates the deformation of the bag spring unit 310. Especially when deformation occurs between two adjacent bag spring units 310, since the two adjacent bag spring units 310 are connected at one end in actual use, the outer diameter of the other end of the bag spring unit 310 can deform better with a relatively small diameter, while having sufficient deformation space.

[0048] In the above embodiment, since the entire pocket spring string 300 is zigzag-shaped, the overall deflection is prone to be too large. Therefore, when multiple pocket spring strings 300 are used to form a bed net and then made into a mattress, the entire mattress is prone to being too soft, which is not conducive to moving and is prone to collapsing after a person lies on it.

[0049] Based on this, in some embodiments of this application, the length of the connection at one end of two adjacent bag spring units 310 is greater than the length of the movable end of the bag spring unit 310. The length ratio can be 2 to 3 times. In this way, the deformation range of two adjacent bag spring units 310 can be limited to a certain extent.

[0050] In some embodiments of this application, to enhance the deformation recovery performance of the bag spring string 300, the restoring force of the spring body 312 in the deformation region is greater than that in other regions. Alternatively, the above function can be achieved by increasing the outer diameter of the spring body 312 in the deformation region, such as having an outer diameter of 2.2 mm for the main deformation part of the spring body 312 and an outer diameter of 2.0 mm for other parts of the spring body 312.

[0051] See Figure 4 In some embodiments of this application, a V-shaped clearance opening 313 is formed on the non-connected end between two adjacent bag spring units 310, and the two sides of the V-shaped clearance opening 313 are connected by a triangular cloth 314; when the bag spring string 300 is laid flat, the side length of the edge of the unstitched side of the triangular cloth 314 is greater than the opening width of the V-shaped clearance opening 313.

[0052] Specifically, when the entire mattress is laid flat, the triangular fabric 314 will have at least some areas folded. This structural design allows the triangular fabric 314 to unfold after the pocket spring string 300 is bent, so as to adapt to the relative deformation of the two adjacent pocket spring units 310. At the same time, it limits the deformation between the two adjacent pocket spring units 310 to a certain extent, ensuring that the mattress does not sag excessively.

[0053] Triangular fabric 314 can cover the V-shaped clearance opening 313. When bending, triangular fabric 314 unfolds with the rotation of spring unit 312, filling the gap created by bending, avoiding the user's feeling of foreign objects when lying down, and ensuring the mattress surface is flat.

[0054] Furthermore, in order to facilitate the bending of the bag spring string 300 under the pressure of the bending bed, the outer diameter of the middle part of the spring body 312 is larger than the outer diameter of the two ends of the spring body 312.

[0055] The above structure allows two adjacent pocket spring units 310 to be close to each other at the unconnected end, while providing sufficient bending space.

[0056] Specifically, the bag bodies 311 of two adjacent bag spring units 310 are connected at one end by stitching, and the spring body 312 inside each bag body 311 is connected and fixed by the stitching thread passing through the bag body 311. Of course, in other embodiments, only the bag body 311 needs to be stitched, and the spring body 312 has a certain amount of room to move within the bag body 311, that is, it can rotate along its own axis.

[0057] See Figure 1 , Figures 2 to 5In some embodiments of this application, the frame 100 includes a pair of parallel short guard edges 120 and a pair of parallel long guard edges 130. The protective layer 200 is attached to the corresponding two side edges of all the short guard edges 120 and long guard edges 130. The V-shaped notch 110 is provided on the two sides of the long guard edge 130 that are attached to the protective layer 200.

[0058] Specifically, both the short edge 120 and the long edge 130 are sponge strips. The joint between the short edge 120 and the long edge 130 can be sewn together with stitching thread, or a protective sleeve structure can be fitted over both for restraint.

[0059] In the above embodiments, both the short edge protector 120 and the long edge protector 130 are rectangular in shape. They are connected to the nearest pocket spring unit 310 by a line or strip of cloth to ensure overall compactness and prevent the short edge protector 120 and the long edge protector 130 from becoming loose with the pocket spring unit 310. This facilitates the assembly of the frame 100 and allows the frame 100 to adapt to the bending of the entire mattress.

[0060] The depth of the V-shaped notch 110 is 20-30mm, the opening angle is 60°, and the distance between two adjacent V-shaped notches 110 is 100-150mm. This is to better adapt to the angle changes when the bed frame is bent, reduce the bending stress of the long edge 130, and avoid cracking of the frame or noise.

[0061] In the embodiments of this application, the short edge 120 and the long edge 130 can be composed of multiple layers of materials, such as a sponge strip inside, and a waterproof layer, a wear-resistant layer and a surface layer arranged sequentially on the outward side.

[0062] In addition, in some embodiments of this application, the long guard 130 may be provided with steel wire strips inside along its own length direction, which is beneficial for the long guard 130 to automatically and elastically reset, and can also improve the overall strength of the frame 100.

[0063] The V-shaped notch 110 is mainly concentrated in two areas of the long edge 130, located at two-fifths and four-fifths of the length of the long edge 130. These two areas correspond to the areas of the waist and thighs when a person lies on the mattress. This allows the mattress to adapt to the joint structure and lying posture of the human body when it is bent into an S-shape with the bending bed.

[0064] The short edge 120, because it does not require frequent bending, does not have a structure similar to the V-shaped notch 110, thus maintaining the overall structural stability and enhancing the end support strength of the mattress.

[0065] In the above-mentioned improvement scheme, the bottom angle of the V-shaped notch 110 is relatively sharp. When bending the long guard edge 130, the V-shaped notch 110 on the outer side of the long guard edge 130 is easily stretched and enlarged, and the bottom of the V-shaped notch 110 is easily torn.

[0066] Based on this, see further, Figures 3 to 5 The bottom of the V-shaped notch 110 is provided with a clearance slot 140.

[0067] Specifically, the clearance groove 140 is circular, which avoids sharp edges and corners, and helps to reduce stress concentration and cracking of the entire long edge 130 in this area.

[0068] It should be noted that in this application, the shape of the V-shaped notch 110 can be other structural shapes, such as U-shaped, T-shaped, etc., which are mainly for setting up an avoidance area to facilitate the bending of the mattress later.

[0069] See also Figure 3 In some embodiments of this application, connecting skirts 210 are provided on the periphery of both protective layers 200, and the connecting skirts 210 are connected to the short protective edge 120 and the long protective edge 130.

[0070] The above structure allows for a more convenient placement of the bed net composed of multiple pocket spring strings 300 inside the frame 100.

[0071] Specifically, the connecting skirt 210 is attached to the upper and lower sides of the short edge protector 120 and the long edge protector 130. The connecting skirt 210 and the protective layer 200 are integrally molded structures, both made of breathable knitted fabric with a breathability rate of ≥1000g / (㎡・24h), ensuring air circulation inside the mattress and preventing stuffiness; the fabric surface is treated with antibacterial agents (antibacterial rate ≥99%), making it suitable for scenarios with high hygiene requirements such as hospitals and nursing homes.

[0072] In this embodiment, the protective layer 200 can be a non-woven fabric layer. Of course, in other embodiments, [the following is an example / reference] Figure 2 For example, the upper protective layer 200 uses non-woven fabric as the main body, and a latex layer, fleece layer, etc. can be set on its outer side. Alternatively, some detachable structures can be set on the upper protective layer 200 to install the latex layer, fleece layer, soft pad, etc., such as zipper structure, Velcro or buckle structure, so as to ensure that these latex layers, fleece layers, soft pads, etc. can slip off the upper protective layer 200, and facilitate disassembly and replacement later.

[0073] The connecting skirt 210 is at least 5cm long and is sewn onto the outer walls of the short edge protector 120 and the long edge protector 130 with needle and thread. The stitching is 10-15mm away from the edge of the frame to ensure a firm connection without affecting the bending and deformation of the long edge protector 130. The protective layer 200 is connected to the corresponding position of the pocket spring unit 310 with zigzag stitching, with a stitch spacing of 20-30mm. This allows the vibration of the spring unit to be transmitted to the protective layer, reducing spring noise and enhancing the overall stability of the mattress.

[0074] The lower protective layer 200 uses a single piece of sponge for support and provides some shock absorption. This structural material provides moderate support, balances softness and resilience, is more durable than thinner materials, and has better breathability than thicker materials. It has good overall production, use, price, and operability, and can be used to attach to the slatted frame of a folding bed to increase the fit between the mattress and the slatted frame.

[0075] It should be further noted that, in some embodiments of this application, the bottom surface of the lower protective layer 200 may also be provided with a fabric layer, a wear-resistant layer, or other structures. The wear-resistant layer can increase its wear resistance with the slatted frame of the bending bed, protecting the lower protective layer 200. Furthermore, the thickness of the lower protective layer 200 is at least 2 cm, and its density is approximately 25 N / 30.

[0076] In addition, this application also provides a folding bed, which includes the mattress of any of the above embodiments.

[0077] Specifically, a folding bed includes a slatted frame that can be bent, with a mattress mounted on the frame that can adapt well to the bending of the frame. For example, a folding bed can be an electrically operated folding bed.

[0078] The folding bed of this application embodiment, being equipped with the mattress of the above embodiment, also has the same technical effect brought by the mattress, that is, the mattress can better adapt to the bending action of the folding bed, avoid the entire mattress from bulging when bending, improve the bending effect of the mattress, ensure the comfort of the mattress, and correspondingly improve the comfort of using the folding bed and enhance the user experience.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mattress, characterized in that, include: The frame has multiple V-shaped notches on both the top and bottom sides along its length. Multiple pocket spring strings are arranged inside the frame along the width direction of the frame. Each pocket spring string includes multiple pocket spring units arranged along the length direction of the frame. One end of two adjacent pocket spring units in each pocket spring string is connected. All pocket spring units have a spatial component parallel to the length direction of the corresponding pocket spring string, so that each pocket spring string is zigzag-shaped. Two protective layers are respectively sealed on opposite sides of the frame in the height direction.

2. The mattress of claim 1, wherein, The protective layer is connected to the corresponding end of the bag spring unit by stitching.

3. The mattress according to claim 1 or 2, characterized in that Each bag spring unit includes a bag body and a spring body. The spring body is installed inside the bag body. One end of the bag body of two adjacent bag spring units is connected so that the two adjacent bag spring units are arranged in a V-shape or an inverted V-shape.

4. The mattress of claim 3, wherein, A V-shaped clearance is formed on the non-connected end between two adjacent bag spring units, and the two sides of the V-shaped clearance are connected by a triangular fabric; when the bag spring string is laid flat, the side length of the edge of the unstitched side of the triangular fabric is greater than the opening width of the V-shaped clearance.

5. The mattress of claim 3, wherein, The outer diameter of the middle part of the spring body is larger than the outer diameter of both ends of the spring body.

6. The mattress of claim 3, wherein, The bags of two adjacent bag spring units are connected by stitching.

7. The mattress of claim 1, wherein, The frame includes a pair of parallel short guard edges and a pair of parallel long guard edges. The protective layer is attached to the corresponding two side edges of all the short guard edges and the long guard edges. The V-shaped notch is provided on the two sides of the long guard edges that are attached to the protective layer.

8. The mattress of claim 7, wherein, The bottom of the V-shaped notch is provided with an avoidance groove.

9. The mattress of claim 7, wherein, Both of the protective layers are provided with connecting skirts around their perimeters, and the connecting skirts are connected to the short protective edge and the long protective edge.

10. A bending press characterized by, Includes the mattress as described in any one of claims 1 to 9.

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