WO2023015634A1

WO2023015634A1 - Multifunctional device providing support and protection during crawling, sitting, lying and jumping activities

Info

Publication number: WO2023015634A1
Application number: PCT/CN2021/116675
Authority: WO
Inventors: 王永琪; 王建武; 王思琪
Original assignee: 王思琪
Priority date: 2021-08-10
Filing date: 2021-09-06
Publication date: 2023-02-16
Also published as: CN114869107A

Abstract

A multifunctional device providing support and protection during crawling, sitting, lying and jumping activities. The multifunctional device comprises a frame (100), a plurality of elastic rods (200), a cushion (300), and a protective net (400). The bottoms of the plurality of elastic rods (200) are mounted on the frame (100), and the tops of the elastic rods (200) are connected to the periphery or the bottom of the periphery of the cushion (300), so that the cushion (300) is disposed on the frame (100). The bottom of the protective net (400) is mounted on or near the periphery of the cushion (300), and is supported upwards around the periphery of the cushion (300) to form a closed space or a semi-closed space open at the top. The elastic rods (200) are arc-shaped elastic rods having a flexural rigidity of 200-10000 N/m and a bending radian of 3-50°. The device provides safety controls for activities such as crawling, sitting, lying, and jumping, integrates multiple functions, and has a long service life.

Description

Versatile device for support and protection during crawling, sitting, lying and jumping activities

technical field

The present invention relates to the technical field of daily necessities, in particular to a multi-functional device for providing support and protection, especially for providing support and protection during daily activities such as crawling, learning to walk, sitting, lying down, jumping, etc. during the growth of infants and young children. Protective multifunctional device that can also be used as a lying and jumping exercise device for children, teenagers and adults.

Background technique

A variety of different types of specialized supports and guards are currently available on the market, including but not limited to cribs, strollers, baby swings, baby walkers, baby rockers, cribs, trampolines, and the like. Each of these devices has a single function, for example, a crib can only be used for sleeping a baby; a baby swing frame can only be used for jumping and increasing leg strength; These devices are short-lived and are usually no longer needed by the infant after only a few months of use. For example, cribs are obsolete after a baby has grown for a few months. The baby walker is not needed after the baby learns to walk independently. This type of device is expensive, and the purchase needs to cost a lot of money, and needs to occupy more space for use and storage. In particular, there are many potential safety hazards in this type of baby device, such as a foldable baby stroller, the seat and the trolley are usually connected by a pivot structure, the structure is not stable, and the joints are sometimes unavoidable. foot, it is easy to cause an accident.

For this reason, need to provide a kind of device that can have multiple functions concurrently, can satisfy infant's daily sleeping, jumping, sitting and standing play etc. needs, support and protect infant.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a multifunctional device, which is suitable for providing support and protection in activities such as crawling, sitting, lying and jumping, and solves the problems of daily life and activities in the prior art. The function is single, the service life is not long, the structure has potential safety hazards, the price is expensive, and it occupies a large space and other technical problems.

The technical scheme of the present invention is as follows: a multifunctional device providing support and protection in crawling, sitting, lying and jumping activities, including a frame, a plurality of elastic rods, a mat and a protective net; a plurality of elastic rods The bottom of the protective net is installed on the frame, and the top of the elastic rod is connected to the periphery or the bottom of the periphery of the cushion, so that the cushion is erected on the frame; the bottom of the protective net is installed on the bottom of the cushion Around or near the periphery, and support upward around the periphery of the mat to form a closed space or a semi-closed space with an open top; the bending stiffness of the elastic rod is 200-10000N/m; the elastic rod has a thickness of 3-50 °, the elastic rod is made of elastic material.

The diameter of the elastic rod is 0.3-5cm.

The elastic rod is a single U-shaped unit formed by at least two single arc-shaped elastic rods arranged side by side and their upper ends integrally connected by a connecting rod, or an arc-shaped elastic rod assembly in which at least two U-shaped units are repeatedly arranged.

In a single U-shaped unit, the free ends of the adjacent arc-shaped elastic rods are spread out in a figure-eight shape; in the arc-shaped elastic rod assembly in which at least two U-shaped units are repeatedly arranged, the outermost The free ends of the two curved elastic rods are flared outwards.

All or at least a part of the orthographic projection of the elastic rod falls outside the frame.

The elastic rod is made of spring steel, aviation aluminum or aluminum alloy; the elastic rod has a relatively hard core and a relatively soft outer wrapping the core, and the core and the outer The difference in Rockwell hardness (HRC) is 0.1□˜2.5□, and the grain size of the core is larger than that of the outer portion.

The frame is provided with a pair of installation holes corresponding to each of the elastic rods, and the pair of installation holes are correspondingly arranged on the inner side and the outer side of the frame.

A sleeve is fixed in the paired mounting holes, and the elastic rod is inserted into the sleeve; the inner diameter of the bottom end of the sleeve is set to be smaller than the inner diameter of the main body, and the outer diameter of the main body of the sleeve is The diameter is larger than the aperture of the mounting hole on the inner side of the frame, the outer diameter of the bottom end of the sleeve is slightly smaller than the aperture of the mounting hole on the inner side of the frame, and the outer diameter of the elastic rod is the same as that of the main body The inner diameter of the portion matches and is larger than the inner diameter of the bottom end of the sleeve.

The frame as a whole is circular, elliptical, rectangular with four corners curved, square with four corners curved, or a rectangle or square with at least one short straight pipe connecting two straight pipes at the corner; the shape of the cushion is the same as The frame is the same.

The cushion includes several warp threads and several weft threads interlaced, the several warp threads are parallel to each other, and the several weft threads are parallel to each other; the warp threads and the weft threads intersect with the periphery of the cushion at an acute angle.

The warp threads and the weft threads are respectively parallel to a diagonal line of the mat.

The mat also includes several parallel first auxiliary lines; the first auxiliary lines are arranged alternately with the warp threads and the weft threads at an acute angle.

The mat also includes a number of parallel second auxiliary lines, the second auxiliary lines are arranged in an acute angle with the warp and the weft; the first auxiliary lines and the second auxiliary lines are respectively parallel to the The long and short sides of the mat.

Several support feet are arranged under the frame, and the support angle supports the frame from the bottom surface.

The supporting foot includes a U-shaped piece and two socket pipes affixed to the frame, and the two free ends of the U-shaped piece are inserted into the two socket pipes; the socket pipe and the U-shaped piece Threaded holes are respectively provided on the free ends of the free ends, and a locking screw passes through the threaded holes on the free ends of the insertion tube and the U-line to lock and connect the two.

The insertion tube is provided with at least two upper and lower threaded holes; the distance between the frame and the inside can be adjusted by replacing the threaded holes locked by the locking screws.

A pad is provided on the cross bar of the U-shaped piece, and the pad wraps or partially wraps the cross bar, and a ratchet is provided at the bottom of the pad to bite the ground.

Several universal wheels are also arranged on the frame.

The periphery of the cushion is detachably connected to the top end of the elastic rod through a connecting piece; the connecting piece has a U-shaped hook portion, a mounting portion and a flexible belt; a perforation is dug on the mounting portion, and the The flexible belt passes through the perforation and is fixed on or near the periphery of the cushion; the U-shaped hook part extends from the mounting part, and the connecting rod of the U-shaped unit is inserted into the The U-shaped hook is engaged and locked with it, so as to detachably connect the elastic rod to the cushion.

The cushion and the bottom of the protective net are connected by a zipper; the cushion extends a connecting portion along or near the periphery, and the connecting portion and the bottom of the protective net are respectively equipped with one side of the zipper.

The cushion is provided with a hemming that wraps its periphery; the connector is installed on the bottom surface of the hemming; the U-shaped hook is provided with a post, and the protruding post is used to hook the hemming, The connecting piece is thereby hidden under the hemming.

The frame is provided with several support rods, and the several support rods are arranged around the cushion, and the top of the protective net is provided with a corresponding number of straps, each of which is connected to one of the support rods on, so that the protective net is stretched open.

The protective net is provided with a zipper door, and the zipper door is U-shaped, 1-shaped, V-shaped, M-shaped, O-shaped or wave-shaped.

The four corners of the frame are respectively fixed with a mounting pipe, the support rod is a large arc rod, the bottom of which is inserted into the mounting pipe and fixed; the mounting pipe is a flat-mouth pipe with an oval cross-section, and the support The bottom of the rod is provided with two opposite flat straight surfaces and two opposite arc-shaped surfaces, after being inserted into the flat-mouthed tube, it cannot be rotated in cooperation with it.

A reinforcing rib is provided between the installation pipe and the frame to strengthen the connection between the installation pipe and the frame.

The beneficial effects of the present invention are: the multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities of the present invention provides a safe space for activities such as crawling, sitting, lying and jumping, Wherein the mat provides support when performing actions such as crawling, sitting, lying, and jumping, and has good elasticity; the protective net provides protection when performing actions such as crawling, sitting, lying, and jumping to prevent infants from and children falling off the mat. The cushion is also a mesh structure woven by the warp and the weft, which also has a ventilation effect. The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities has various functions, is safe and reliable, and has a long service period.

Description of drawings:

Fig. 1 is a structural diagram of a multifunctional device providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 2 is a structural diagram of the elastic rod of the multifunctional device providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 3 is another structural view of the elastic rod of the multifunctional device providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 4 is a top view of the multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 5 is a structural diagram of the frame and supporting feet of the multifunctional device providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 6 is a structural diagram of the sleeve of the multifunctional device providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 7 is a structural view of the first embodiment of the cushion of the multifunctional device providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 8 is a schematic structural view of a mat in the prior art.

Fig. 9 is a schematic diagram of the moment principle of the mat of the present invention.

Fig. 10 is a schematic diagram of the principle of the mat of the present invention.

Fig. 11 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 12 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 13 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 14 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 15 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 16 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 17 is a schematic structural view of another embodiment of the mat of the present invention.

Fig. 18 is a side view of the multifunctional device for providing support and protection during crawling, sitting, lying and jumping activities according to the present invention.

Fig. 19 is a structural view of another angle of the multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to the present invention.

Fig. 20 is an enlarged view of Fig. 19A.

Detailed ways

In order to make the object, technical solution and technical effect of the present invention clearer, the present invention will be further described below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to FIG. 1 , the present invention provides a multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities, including a frame 100 , a plurality of elastic rods 200 , a mat 300 and a protective net 400 . The bottoms of the plurality of elastic rods 200 are installed on the frame 100 , and the tops of the elastic rods 200 are connected to the periphery or the peripheral bottom of the cushion 300 , so that the cushion 300 is erected on the frame 100 . The bottom of the protective net 400 is installed on or near the periphery of the cushion 300, and is supported upward around the periphery of the cushion 300 to form a closed space or a semi-closed space with an open top.

In the multifunctional device, the frame 100 is used for the installation of the elastic rod 200 and is integrated as a whole. The elastic rod 200 erects the mat 300 on the frame 100, and converts the impact force on the mat 300 when the user jumps on the mat 300 into elastic potential energy storage, and then releases it instantaneously, thereby realizing the user's Bounce: the mat 300 is used to support the user to bounce, sit, lie down or infants crawling, toddler and so on. The protective net 400 is used to protect the user, preventing the user from falling off the mat 300 when performing actions such as bouncing, sitting, lying, or infants crawling and learning to walk on the mat 300 . The multifunctional device can be used for daily activities such as lying down, sitting up, playing, crawling, etc., since the infant is born a few months ago. The cushion 300 is lifted off the ground due to the erection of the elastic rod 200 , thereby providing a relatively clean living space. Because the mat 300 is a grid-like structure woven with the following warp and weft threads, it is very convenient to clean even if an infant drowns on it. The range of activities of infants and young children limited by the protective net 400 protects infants and young children from falling from the mat 300 on the one hand, and on the other hand, it is also convenient for guardians to observe the conditions of infants and young children at any time. When the baby grows into a toddler, its nature likes to jump. Due to the elasticity of the mat 300 and the protection of the protective net 400, even if the toddler falls on the mat 300, it will not hurt the body or cause pain. Teenagers or adults can also jump on the multifunction device for fun and fitness.

The elastic rod 200 is made of elastic material and has certain elasticity. When the user jumps on the mat 300, the mat 300 is pressed down, pulling the elastic rod 200, and the elastic rod 200 bends, stores elastic potential energy, and then recovers instantaneously, thereby bouncing the user up. The bending rigidity of the elastic rod 200 is 200-10000 N/m. Among them, infants or children have smaller body weight and less strength. Therefore, the bending resistance of the elastic rod 200 should not be too large, otherwise, when jumping on the mat 300, the mat 300 cannot pull the elastic rod 200 and store elastic potential energy. The bending resistance of the elastic rod 200 should not be too small, otherwise, the elastic rod 200 is very easy to bend, and the cushion cannot be tensioned, and the cushion 300 cannot produce good elasticity when it is loose, and it will form when sitting or lying down. sunken. When the user is an infant or a child, the suggested flexural rigidity of the elastic rod 200 is preferably 200-2000N/m. As the age or weight of the child increases, the flexural rigidity of the elastic rod 200 should gradually increase .

Referring to FIG. 1 and FIG. 2 , the elastic rod 200 may be a straight rod, or a single arc-shaped elastic rod 210 with a certain curvature. The inner arc of the arc-shaped elastic rod faces the direction of the cushion. The radian of the arc-shaped elastic rod is generally set at 3-50°. Preferably 5-10°. Compared with the straight rod, the curved elastic rod is easier to bend further when stressed, and stores elastic potential energy.

The diameter of the elastic rod 200 is generally 0.3-5 cm. The thicker the rod diameter of the elastic rod 200, the more difficult it is to bend, and the thinner the rod diameter, the weaker the supporting force, which is not conducive to tensioning the cushion and supporting infants and children. When the user is an infant or a child, the suggested bending stiffness of the elastic rod is preferably 0.5-2cm,

Referring to Figures 2 and 3, preferably, the elastic rod 200 is composed of at least two single arc-shaped elastic rods 210 side by side, the upper ends of which are integrally connected by a connecting rod 220 to form a single U-shaped unit or at least 2 The curved elastic rod assembly 200' is a U-shaped unit repeatedly arranged. The arrangement of the arc-shaped elastic rod assembly 200' can simplify the installation of the elastic rod and the frame 100 below, and facilitate the installation and connection of the cushion 300 through the connecting piece 500 described below. The connection between the arc-shaped elastic rod 210 and the connecting rod 220 is preferably an arc-shaped corner.

Preferably, in a single U-shaped unit, the free ends of the adjacent arc-shaped elastic rods open in a "eight" shape, and in the repeated arrangement of U-shaped units, the free ends of the outermost arc-shaped elastic rods are The opening in the shape of an "eight" facilitates the stable installation of the arc-shaped elastic rod assembly 200 ′ in the frame 100 .

Referring to FIG. 1 and FIG. 4 , preferably, the bottom of the elastic rod 200 is installed on the frame 100 , and the orthographic projection of the elastic rod 200 is preferably at least partly or completely outside the area defined by the frame 100 . Specifically, relative to the frame 100, the elastic rod 100 is outwardly expanded in a direction away from the cushion 300, so that the cushion 300 having a larger area than the area defined by the frame 100 can be installed, increasing the The activity space in the installation. It should be understood that when the area of the cushion 300 is smaller than the area defined by the frame 100, the elastic rod 300 can also be stretched inward relative to the frame 100, so that at least a part of the orthographic projection of the elastic rod 200 fall within the area defined by the frame 100 .

The elastic rod 200 is preferably made of spring steel, aviation aluminum or aluminum alloy. The material of spring steel or aviation aluminum is environmentally friendly, not easy to break, and the price is low. Wherein, the elastic rod 200 has a relatively hard core and a relatively soft exterior wrapped around the core, and the Rockwell hardness (HRC) difference between the core and the exterior is 0.1□˜2.5□ , the grain size of the core is larger than the grain size of the outer portion. For its preparation method, refer to Chinese patent CN202110356918.X. The elastic rod of this type of structure can be bent repeatedly without breaking, has excellent hardness and yield strength, no deformation, fatigue resistance, safe performance and stable structure.

Preferably, referring to FIG. 5 , the frame 100 is provided with a pair of mounting

holes

110a and 110b corresponding to each of the elastic rods, and the pair of mounting

holes

110a and 110b are located on opposite sides of the frame. , so as to facilitate the insertion and installation of the elastic rod 200 . In order to meet the structural requirement that the orthographic projection of the elastic rod 200 falls outside the frame 100 , preferably the pair of mounting

holes

110 a and 110 b are provided on the inner side and the outer side of the frame 100 . Of course, this arrangement can also be used in the case where the orthographic projection of the elastic rod 200 falls within the frame 100 .

Preferably, referring to FIG. 2 and FIG. 3 , a sleeve 120 is fixed inside the pair of mounting

holes

110a and 110b, and the elastic rod 200 can be inserted into the sleeve 120 to achieve the elastic rod 200. Installation, the installation method is simple and easy to operate. Preferably, a rubber sleeve 240 is further provided in the sleeve 120 . The elastic rod 200 is inserted into the rubber sleeve 240, and when the elastic rod 200 rotates slightly in the sleeve 120, the rubber sleeve 240 can prevent the two from producing harsh friction sounds due to friction, and realize silence .

Preferably, referring to FIG. 6 , the inner diameter of the bottom end 121 of the sleeve 120 is set to be smaller than the inner diameter of the main body 122 , and the outer diameter of the main body 122 of the sleeve 120 is larger than the installation on the inner side of the frame. The aperture 110a of the hole, the outer diameter of the bottom end 121 of the sleeve is slightly smaller than the aperture of the mounting hole 110a on the inner side of the frame, the outer diameter of the elastic rod 200 matches the inner diameter of the main body 122 , and greater than the inner diameter of the bottom end 121 of the sleeve 120; thus the sleeve 120 cannot fall from the frame 100, and the elastic rod 200 cannot fall from the bottom end of the sleeve 120 wear out.

Preferably, referring to FIG. 1 , the periphery of the cushion 300 is detachably connected to the top end of the elastic rod 200 through a connecting member 500 described below. The multi-functional device for providing support and protection in crawling, sitting, lying and jumping activities described in the present invention, in order to adapt to be placed in different spaces, the frame 100 can be designed as a rectangle, a square, a circle, Ellipse and its similar structures etc.

Preferably, the frame 100 is a rectangular frame or a square frame, on which the cushion 300 similar in shape to the frame is arranged. Around the periphery of the cushion 300, an edge 310 wrapping the periphery of the cushion 300 is preferably provided. The periphery of the cushion 300 is detachably connected to the top end of the elastic rod 200 through a connecting piece 500 described below. When the edge 310 is provided around the cushion 300 , the connecting member 500 is preferably installed on the bottom surface of the edge 310 .

Referring to FIG. 7 , the mat 300 includes several warp threads 1 and several weft threads 2 that are interlaced, the several warp threads 1 are parallel to each other, and the several weft threads 2 are parallel to each other. The warp 1 and the weft 2 intersect the periphery A of the mat 300 at an acute angle.

Compared with the warp threads and the weft threads respectively arranged parallel to the periphery of the mat 300 as shown in FIG. The multifunctional device has better flexibility, and its principle is explained as follows:

Referring to Fig. 9, when the player jumps on the mat 300, it is assumed that the foot falls on any landing point C of the mat 300, and the warp 1 and the weft 2 passing through the landing point C are pressed down, and the two ends The elastic rod 200 at the periphery of the cushion produces a pulling force, and other warp threads and weft threads interlaced with the warp thread 1 and the weft thread 2 passing through the drop point C are affected by it, and are also pressed downward, and the two ends of the cushion 300 are also pressed against each other. The elastic rods 200 at the periphery generate tension. These pulling forces combine to make the elastic rod 200 elastically deform, thereby storing elastic potential energy.

The elastic deformation of the elastic rod 200 depends on the torque received, and the torque formula is F*L, where F represents force and L represents the moment arm. The magnitude of the moment is determined by the player’s pressure on the mat at the landing point on the one hand, and the pressure is converted into a pulling force on the elastic rod through the warp 1 and the weft 2, namely F; on the other hand, it depends on The distance between the warp 1 or the weft 2 and the elastic rod 200 passing through the landing point C is L.

In the prior art shown in Figure 8, the warp 1 and the weft 2 are parallel to the long and short sides of the mat; in the embodiment shown in Figure 7, the warp 1 and the weft 2 are parallel to the The long and short sides of the mat meet at an acute angle. With reference to Fig. 9, taking a rectangular mat as an example, the maximum distance between any landing point C and the periphery of the mat is the distance from the landing point C to the four corners of the rectangular mat, which is denoted as L1; the vertical distance from the landing point C to the long side of the rectangular mat , denoted as L2; the distance from landing point C to the short side of the rectangular mat, denoted as L3. Obviously, L1>L2, L1>L3, then theoretically, when the same pressure F is applied to the warp or weft at the landing point C, the moments generated by the warp or weft on the mat are F*L1, F*L2 and FL3, obviously, F*L1>F*L2, F*L1>F*L3, it can be seen that under the same pressure, the warp 1 and the weft 2 are arranged at an acute angle with the mat than the warp 1 And the weft 2 is arranged parallel to the long side and the short side of the mat, which can apply a larger moment to the elastic rod 200 under the mat 300, and also convert it into a larger rebound potential energy, thereby Make the device more elastic.

In addition, when the player bounces at any landing point C of the mat, the warp 1 and the weft 2 there are pressed down to a certain extent, which affects other warps and other wefts around them to be pressed down to different extents, The closer the other warps and other latitudes are to the landing point C, the greater the extent of being pressed is affected by it, and the further the distance is, the smaller the extent of being pressed is affected by it. Apparently, the greater the degree of depression, the greater the pulling force on the elastic rods under the periphery of the cushion, and the smaller the pulling force on the elastic rods under the periphery of the cushion is. The warp thread 1 and the weft thread 2 passing through any landing point C can only pull the elastic rod under the periphery of the cushion through its two ends, and apply the moment to it. As shown in FIG. 10 , the warp 1 and the weft 2 are parallel to the long side and the short side of the mat 300 respectively, and pass through the warp 1 and the weft 2 at any landing point C, for the mat 300 A torque e, f, g, h is applied to the four corners respectively. Also at the landing point C, when the warp 1 and the weft 2 respectively intersect the long side and the short side of the mat at an acute angle, there are two intersection points on one side a, that is, the Two moments g', f' are applied to the side, and a moment e', h' is applied to the other two sides adjacent to the side respectively. Obviously, when F is the same, e'>e, f'>f, and f'+g'>f, h'>g; therefore, the side a is subject to a larger moment, so that the side The elastic rods under the two adjacent corners undergo relatively greater elastic deformation, store more potential energy, and thus have better elasticity.

Further, in the embodiment shown in FIG. 11 , each warp thread or weft thread forms a triangular structure or a similar triangular structure with the periphery of the mat 300 , which is relatively more stable.

Preferably, referring to FIG. 11 , the warp 1 and the weft 2 are parallel to the

diagonals

3 a and 3 b of the mat 300 , respectively. When the warp 1 and the weft 2 are respectively arranged parallel to the diagonal of the rectangular mat, when the player bounces at the central point D of the central area of the mat, the warp and the weft at this place are pressed and pressed Press down to a certain extent, and affect the warp and weft around it to press down to a different extent. Since the center point D of the central area of the mat and its surrounding warp and latitude are all connected to the four corners of the trampoline or the long and short sides close to the four corners, thereby forming moments at the four corners of the trampoline, as well as at the short and long sides, Therefore, the elastic rods at the four corners and under the long side and the short side can be elastically deformed, so that the maximum elastic potential energy can be stored, and the central area of the trampoline has the best elasticity.

Preferably, the warp 1 and the weft 2 are at 45 degrees to the periphery of the mat. Intersect settings.

In another embodiment of the present invention, referring to FIG. 12 , the mat 300 further includes several parallel first auxiliary lines 4; the first auxiliary lines 4 are arranged alternately with the warp 1 and the weft 2 at an acute angle. . The first auxiliary line 4 can be arranged parallel to the long side of the mat 300 or parallel to the short side of the mat 300 . Through the setting of the first auxiliary line 4, after the cushion is under pressure, the tension distribution on the elastic rod 200 under the cushion is more uniform, which is beneficial to improve the elasticity of the device.

In another embodiment of the present invention, referring to FIG. 13 , the mat 300 further includes several parallel second auxiliary lines 5, and the second auxiliary lines 5 are interlaced with the warp 1 and the weft 2 at an acute angle. . The first auxiliary line 4 and the second auxiliary line 5 are respectively parallel to the long side and the short side of the mat 300 . Through the setting of the second auxiliary line 5, after the cushion is under pressure, the tension distribution on the cushion is more uniform, which is beneficial to improve the elasticity of the device.

Preferably, as shown in Figures 16 and 17, the warp 1, the weft 2, the first auxiliary thread 4 and the second auxiliary thread 5 intersect at an angle of 45°.

It should be understood that auxiliary threads can be further added to the braided threads of the mat 300 , but this will undoubtedly increase the weight of the mat, thereby reducing its resilience and increasing the cost.

When the elastic rods 200 at the four corners are pulled, the bottom of the elastic rods 200 pushes the frame 100 into the device. Preferably, as shown in FIG. 1 and FIG. 5 , the four corners of the square or rectangular frame 100 are preferably curved corners. Compared with the right angle, the arc angle has better stability, which makes the frame 100 more stable, and can relatively reduce the pressure of the frame being bent toward the center under tension. Preferably, at least one short straight pipe 130 connects two straight pipes 120 at the four corners of the square or rectangular frame 100 . This structure can offset the push of the elastic rod 200 on the frame 100 to a certain extent, so that the frame 100 is more stable.

Several support feet 600 are provided under the frame 100, and the support feet 600 support the frame 100 off the ground. Preferably, the supporting feet 600 are arranged under the four corners of the square or rectangular frame 100 , or evenly distributed under the four corners of the oval frame 100 , or evenly distributed under the circular frame.

The supporting feet 600 can be a common supporting foot structure in the market. Preferably, the supporting foot 600 includes a U-shaped piece 610 and two insertion tubes 620 fixedly connected under the frame, and the two free ends 611 of the U-shaped piece are inserted into the two insertion tubes 620 . Corresponding threaded holes 621 and 622 are respectively provided on the free end 611 of the socket pipe 620 and the U-shaped piece, and a locking screw 630 passes through the threaded holes 621 and 622 to connect the socket pipe 620 and the free end 622. The U-shaped piece is locked and connected. A pad 640 is provided on the cross bar 612 of the U-shaped piece 610 . The pad 640 wraps or partially wraps the cross bar 612 . The bottom of the pad 640 is provided with a pawl 641 to bite the ground. The U-shaped member 610 can be arranged vertically to the ground or inclined at an acute angle to the ground. The installation direction of the insertion tube 620 should be adapted to the U-shaped piece 610 .

Preferably, referring to FIG. 18 , in order to adjust the height of the device, the insertion tube 620 is provided with at least two threaded

holes

621a and 621b arranged up and down. The height of the device can be adjusted by adjusting the threaded

holes

622 and 621a or 621b locked by the locking screw 630 . For example, if the locking screw 630 locks the upper threaded hole 621a and the threaded hole 622a, the position of the device is lower; higher.

Preferably, in order to facilitate the movement of the device, the frame 100 is further provided with universal wheels 140 . The universal wheel 140 has a commonly used universal wheel structure, and its structure and principle should be well known to those skilled in the art, and the present invention will not be described in detail here.

Referring to FIGS. 19 and 20 , the connection between the elastic rod 200 and the cushion 300 is realized through a connecting piece 500 . In order to adapt to the arc-shaped elastic rod assembly described in the present application, the connecting piece 500 described in the present application preferably has a U-shaped hook portion 510 , a mounting portion 520 and a flexible strap 530 . A perforation 521 is dug in the mounting part 520, and the flexible belt 530 passes through the perforation 521 and is fixed on the periphery of the cushion 300 or the bottom surface of the underside 310 of the cushion. The fixing method is preferably stitching. The U-shaped hook portion 510 extends from the installation portion, and the connecting rod 200 is inserted into the U-shaped hook portion to lock with it, so that the arc-shaped elastic rod assembly and the cushion 300 are detachable connect.

Preferably, the U-shaped hook portion 510 is provided with a protruding post 511, the mesh wire is provided at the edge of the cushion 300, and a flexible pad is provided between the mesh wire and the edge, and the protruding post 511 By hooking the mesh wires, the hemming covers the connecting piece 500, thereby making the trampoline more beautiful.

The bottom of the cushion 300 and the protective net 400 are preferably connected by a zipper 401 . Specifically, a connecting portion 301 extends from the mat 300 along the peripheral attachment, and the connecting portion 301 and the bottom of the protective net 400 are respectively installed with one side teeth of the zipper 401 . The zipper has a generally common zipper structure, which is well known to those skilled in the art, and will not be repeated in this application.

Referring to Fig. 1, Fig. 19 and Fig. 20, the protective net 400 is a mesh structure woven from flexible wires. In order to maintain its shape, it will not be deformed even if an infant collides with the protective net, so as to protect infants and prevent their Fall off the mat. For this, the protective net 400 must be taut. The frame 100 is provided with several support rods 700, and the several support rods 700 are arranged around the cushion 300, and the top of the protective net 400 is provided with a corresponding number of straps 410, and each of the straps 410 is connected On the support rod 700, the protective net 400 is stretched and stretched.

The protective net 400 is provided with a zipper door 420 . Access to the device is through the zippered door 420 .

The zipper door 420 can be set in various shapes as required, such as a straight shape, a slot shape or a U shape. U-shaped is preferred.

The four corners of the frame 100 are respectively fixed with a mounting tube 101 , the support rod 700 is a large arc rod, the bottom of which is inserted into the mounting tube 101 for fixing. Preferably, a reinforcing rib is provided between the installation pipe 101 and the frame 100 to strengthen the connection between the installation pipe 101 and the frame 100 . Specifically, the installation tube 101 is a flat-mouthed tube with an oval cross-section, and the bottom of the support rod 700 is provided with two opposite straight surfaces 701 and two opposite arc-shaped surfaces 702, after being inserted into the flat-mouthed tube , with which it cannot be rotated.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and changeable, and series of products can be derived. Just making some simple deductions or replacements should be deemed to belong to the patent protection scope of the present invention determined by the submitted claims.

Claims

A multifunctional device providing support and protection in crawling, sitting, lying and jumping activities, is characterized in that it includes a frame, a plurality of elastic rods, a mat and a protective net; the bottom of the plurality of elastic rods is installed On the frame, the top of the elastic rod is connected to the periphery or the bottom of the cushion, so that the cushion is erected on the frame; the bottom of the protective net is installed on the periphery or the periphery of the cushion Nearby, and support upward around the periphery of the mat to form a closed space or a semi-closed space with an open top; the bending stiffness of the elastic rod is 200-10000N/m; the elastic rod has a bending of 3-50° radian, the material of the elastic rod is an elastic material, the elastic rod has a relatively hard core and a relatively soft outer wrapping the core, and the Rockwell hardness of the core and the outer The (HRC) difference is 0.1□˜2.5□, and the grain size of the core part is larger than that of the outer part.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1, characterized in that the diameter of the elastic rod is 0.3-5 cm.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1, wherein the elastic rods are composed of at least two single arc-shaped elastic rods arranged side by side, which A single U-shaped unit integrally connected by a connecting rod at the upper end or an arc-shaped elastic rod assembly in which at least two U-shaped units are repeatedly arranged.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 3, characterized in that, in a single U-shaped unit, the adjacent curved elastic rods The free ends open in a figure-eight shape; in the arc-shaped elastic rod assembly in which at least two U-shaped units are arranged repeatedly, the free ends of the two outermost arc-shaped elastic rods open outward.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to any one of claims 1 to 4, characterized in that all or at least a part of the orthographic projection of the elastic rod falls on outside the frame.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to any one of claims 1-4, wherein the elastic rod is made of spring steel, aviation aluminum or aluminum alloy.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to any one of claims 1-4, wherein the frame is provided with a corresponding elastic rod Pairs of mounting holes are provided on the inner side and outer side of the frame correspondingly.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 7, wherein a sleeve is fixed in the paired mounting holes, and the elastic rod Insert the sleeve; the inner diameter of the bottom end of the sleeve is set to be smaller than the inner diameter of its main body, the outer diameter of the main body of the sleeve is larger than the aperture of the mounting hole on the inner side of the frame, the sleeve The outer diameter of the bottom end of the barrel is slightly smaller than the diameter of the mounting hole on the inner side of the frame, and the outer diameter of the elastic rod matches the inner diameter of the main body and is larger than the inner diameter of the bottom end of the sleeve.
The multifunctional device for providing support and protection in crawling, sitting, lying, and jumping activities according to claim 1, wherein the frame as a whole is in the shape of a circle, an ellipse, a rectangle with arc-shaped corners, A square whose four corners are arc-shaped, or a rectangle or a square whose corners connect two straight pipes through at least one short straight pipe; the shape of the cushion is the same as that of the frame.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1 or 9, characterized in that, the mat includes several warp threads and several weft threads weaved interlacedly, and several of the The warp threads are parallel to each other, and several of the weft threads are parallel to each other; the warp threads and the weft threads intersect with the periphery of the mat at an acute angle.
The multifunctional device for providing support and protection during crawling, sitting, lying and jumping activities according to claim 10, wherein the warp and the weft are respectively parallel to the diagonals of the mat.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 10, characterized in that, the mat also includes several parallel first auxiliary lines; The threads are arranged alternately at acute angles with the warp threads and the weft threads.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 12, wherein the cushion further includes several parallel second auxiliary lines, and the second auxiliary lines The threads are interlaced with the warp threads and the weft threads at an acute angle; the first auxiliary thread and the second auxiliary thread are respectively parallel to the long side and the short side of the mat.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1, wherein several supporting feet are arranged under the frame, and the supporting angle supports the frame off the bottom.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 14, wherein said supporting feet comprise a U-shaped piece and Two socket pipes, the two free ends of the U-shaped piece are inserted into the two socket pipes; the free ends of the socket pipe and the U-shaped piece are respectively provided with threaded holes, and a locking screw passes through the socket The connecting pipe and the threaded hole on the free end of the U-shaped piece lock and connect the two.
The multifunctional device for providing support and protection during crawling, sitting, lying and jumping activities according to claim 15, wherein at least two threaded holes arranged up and down are provided on the connecting pipe; Adjust the distance from the frame to the inside by replacing the threaded hole where the locking screw locks.
According to claim 15 or 16, the multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities is characterized in that a pad is provided on the cross bar of the U-shaped member, so that The pad wraps or partially wraps the cross bar, and the bottom of the pad is provided with pawls for biting the ground.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1, characterized in that several universal wheels are also arranged on the frame.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 3, wherein the periphery of the cushion is detachably connected to the top end of the elastic rod through a connecting piece The connector has a U-shaped hook, a mounting portion and a flexible strap; a perforation is dug on the mounting portion, and the flexible strap passes through the perforation and is fixed on the periphery of the mat or the Near the periphery of the cushion; the U-shaped hook portion extends from the installation portion, and the connecting rod of the U-shaped unit is inserted into the U-shaped hook portion to lock with it, thereby connecting the elastic rod to the Pads are detachably attached.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1, characterized in that, the bottom of the cushion and the protective net are connected by a zipper; A connection portion extends from the periphery or near the periphery, and the connection portion and the bottom of the protective net are respectively installed with one side of the slide fastener.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 19, wherein the cushion is provided with an edge wrapping its periphery; the connecting piece is installed on On the lower bottom surface of the wrapping; the U-shaped hook part is provided with a protruding post, and the protruding post is used to hook the wrapping so as to hide the connecting piece under the wrapping.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 1, characterized in that, the frame is provided with several support rods, and several of the The support rods are arranged around the cushion, and the top of the protective net is provided with a corresponding number of straps, and each of the straps is connected to one of the support rods, thereby stretching the protective net.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 22, wherein the protective net is provided with a zipper door, and the zipper door is U-shaped, 1 Shaped, V-shaped, M-shaped, O-shaped or wavy.
The multifunctional device for providing support and protection in crawling, sitting, lying and jumping activities according to claim 22, wherein the four corners of the frame are respectively fixed with a mounting pipe, and the support rod is a A large arc-shaped rod, the bottom of which is inserted into the installation pipe to fix; the installation pipe is a flat-mouthed pipe with an oval cross-section, and the bottom of the support rod is provided with two opposite flat surfaces and two opposite arc-shaped surfaces, After being inserted into the flat-mouthed tube, it cannot be rotated in cooperation with it.