An improved bed

Abstract

The improved bed comprises a support frame, a cloth cover and a cloth cover connecting support frame connected to the top of the support frame, the cloth cover connecting support frame comprises two first connecting rods, the cloth cover is connected to the first connecting rods to form a bed surface, the support frame comprises four support pieces and two second connecting rods, the end of each first connecting rod is provided with a corresponding support piece, a second connecting rod is connected between the two support pieces corresponding to the same side end of the two first connecting rods, at least one support piece is provided in an inclined manner and forms a non-right angle with the bed surface, and an adjusting device is arranged on the support piece to make the support piece extend or shorten along the axial direction. The improved bed can make the support piece extend or shorten along the axial direction by adjusting the adjusting device, so as to change the distance between the corresponding first connecting rod and another first connecting rod, which not only facilitates the installation of the cloth cover of the bed surface, but also slows down the damage speed of the cloth cover and improves the service life of the bed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture, more specifically to an improved bed. BACKGROUND

[0002] Bed is a comfortable resting place for people or pets, especially in the harsh outdoor environment. The Chinese utility model with the authorization announcement number CN 218869016U discloses a pet bed, which comprises: a first longitudinal rod, both ends of which are provided with a first supporting leg; a second longitudinal rod, both ends of which are provided with a second supporting leg, the second longitudinal rod and the first longitudinal rod are arranged at intervals; a first horizontal rod, one end of the first horizontal rod is connected with the first supporting leg of one end of the first longitudinal rod, the other end of the first horizontal rod is connected with the second supporting leg of one end of the second longitudinal rod, and the first horizontal rod is located below the first longitudinal rod and the second longitudinal rod; a second horizontal rod, one end of the second horizontal rod is connected with the first supporting leg of the other end of the first longitudinal rod, the other end of the second horizontal rod is connected with the second supporting leg of the other end of the second longitudinal rod, and the second horizontal rod is located below the first longitudinal rod and the second longitudinal rod; a support pad, both sides of the length direction of the support pad are connected with the first horizontal rod and the second horizontal rod respectively.

[0003] In order to provide better support, the support pad usually adopts a cloth cover with small expansion rate. However, since the support pad is in a suspended and taut state, under the action of the gravity of the pet (especially the heavy pet) for a long time, the cloth will appear irreversible tensile deformation, resulting in the relaxation of the bed surface and the reduction of the support of the bed surface. If the bed surface is not processed to restore the taut state, on the one hand, it is difficult to provide stable support for the pet, and the pet is difficult to rest firmly; moreover, the relaxation phenomenon will intensify with time, and then the bed surface will collapse, greatly shortening the service life of the bed surface. At this time, the cloth cover needs to be replaced, which is not only cumbersome but also high in cost. For some pet beds whose cloth cover cannot be disassembled and replaced, the whole pet bed is scrapped. SUMMARY

[0004] The present application provides an improved bed to solve the problems of the relaxation of the bed surface cloth cover of the existing bed, the reduction of the support, the difficulty for people or pets to rest firmly, and the shortening of the service life.

[0005] The present application adopts the following technical solutions:

[0006] An improved bed comprises a supporting frame, a cloth cover and a cloth cover connecting support connected to the top or middle-upper part of the supporting frame, the cloth cover connecting support comprising two first connecting rods, two opposite edges of the cloth cover being connected to the first connecting rods to form a bed surface, characterized in that the supporting frame comprises at least two groups of supporting rod members arranged at the bottom of the first connecting rods, each group of supporting rod members comprising two supporting members and a second connecting rod, the lower ends of the two supporting members being fixed to the two ends of the second connecting rod, the top ends of the supporting rod members being connected to the first connecting rods, at least one of the supporting members being arranged obliquely and forming a non-right angle with the bed surface, and an adjusting device being arranged on the supporting member to make the supporting member elongate or shorten along its axial direction to change the distance between the corresponding first connecting rod and another first connecting rod.

[0007] The two supporting members arranged obliquely below one of the first connecting rods form the same non-right angle with the bed surface, and an adjusting device is arranged on each of the two supporting members.

[0008] The four supporting members are arranged obliquely, the two supporting members arranged obliquely below the same first connecting rod form the same non-right angle with the bed surface, and the two supporting members arranged obliquely below different first connecting rods are arranged in opposite directions; an adjusting device is arranged on each of the supporting members.

[0009] The planes on which the two supporting members arranged below the same end of the two first connecting rods are perpendicular to the bed surface, and each of the supporting members forms an acute angle with the bed surface.

[0010] The adjusting device comprises a threaded sleeve, a movable rod and a connecting sleeve, the connecting sleeve being connected to the first connecting rod, the top part of the supporting member being provided with a connecting hole, the outer surface wall of the upper part of the supporting member being provided with external threads, the threaded sleeve being provided with internal threads, the internal threads of the threaded sleeve being connected to the external threads, the lower end of the movable rod being inserted into the connecting hole, the outer side wall of the upper end of the movable rod being further provided with a flange abutting against the top surface of the threaded sleeve, and the top surface of the flange being fixedly connected to the connecting sleeve.

[0011] The movable rod, the flange and the connecting sleeve are integrally formed.

[0012] The connecting sleeve is a circular sleeve or a semicircular clamping sleeve.

[0013] The supporting member is further provided with a retreat-stop mechanism limiting the rotation of the threaded sleeve.

[0014] The retreat-stop mechanism comprises a bolt, a threaded hole being formed in the threaded sleeve, and the bolt being connected to the threaded hole and abutting against the first external threads at its end.

[0015] Each of the support members is formed by a first inclined support section at the upper part and a second inclined support section at the lower part, which are connected by a connecting member, two ends of the second connecting rod are respectively connected to the inner side of the connecting member, the adjusting device is installed on the first inclined support section, and the line connecting the two ends of the second connecting rod forms an obtuse angle structure with each of the second inclined support sections.

[0016] The second connecting rod is a straight rod or an arc-shaped bent rod protruding upward.

[0017] The application can also adopt the following scheme:

[0018] An improved bed comprises a support frame, a cloth cover and a cloth cover connecting support, the cloth cover connecting support is connected to the top or middle upper part of the support frame, the cloth cover connecting support comprises two first connecting rods, two opposite edges of the cloth cover are connected to the first connecting rods to form a bed surface, at least one adjusting device for clamping the movement of the first connecting rod is fixed on the support frame, the adjusting device comprises a clamping member and a power mechanism for driving the movement of the clamping member, the clamping member is connected to the first connecting rod, and the movement of the corresponding first connecting rod is driven by the power mechanism to change the distance between the two first connecting rods.

[0019] The support frame comprises at least two groups of support rod members arranged at the bottom of the first connecting rod, each group of support rod members comprises two support members and a second connecting rod, the lower ends of the two support members are fixed to the two ends of the second connecting rod, and the top ends of the support rod members are connected to the first connecting rod.

[0020] At least one support seat is installed on the support member, the power mechanism is arranged on the support seat, the power mechanism comprises a screw rod and a nut, the screw rod is rotatably installed on the support seat, the screw rod is perpendicular to the first connecting rod in the plane, the nut is connected to the screw rod, and the clamping member is fixedly connected to the top surface of the nut.

[0021] Two support seats are respectively installed on the two support members below the same first connecting rod.

[0022] The clamping member is a circular sleeve or a semicircular clamp.

[0023] The clamp is integrally formed with the nut.

[0024] The support seat is further provided with a retreat limiting mechanism for limiting the rotation of the screw rod.

[0025] The retreat limiting mechanism comprises a hanging rod and a hanging rope, the hanging rod is fixedly installed on the outer side of the support seat, the hanging rope is arranged on the nut of the screw rod, and after the screw rod is rotated to the position, the hanging rope is hung on the hanging rod.

[0026] The anti-backout mechanism comprises a press switch, the support base is provided with an installation through hole for installing the screw rod, the head of the screw rod is provided with an installation slot at a position deviated from the center, the press switch is rotatably installed in the installation slot through a rotating shaft, the side of the support base corresponding to the head of the screw rod is provided with a plurality of notch slots along the circumferential surface of the installation through hole, the press switch is provided with a limiting protrusion on the inner side of the notch slot, the inner side of the installation slot is further provided with a giving recess for providing space for the limiting protrusion to exit the notch slot, the rotation of the screw rod can be limited when the limiting protrusion is clamped in the notch slot, and the screw rod can rotate freely when the limiting protrusion exits the notch slot.

[0027] The support is a vertical support perpendicular to the cloth cover, and two ends of the second connecting piece are connected to middle-lower parts or bottoms of the vertical supports, respectively.

[0028] The support is formed by a vertical support segment at an upper part and an inclined support segment at a lower part through a connecting piece, two ends of the second connecting piece are connected to inner sides of the connecting piece, respectively, and the inclined support segment and the connecting line of the two ends of the second connecting piece form an obtuse angle structure.

[0029] The support is formed by a first inclined support segment at an upper part and a second inclined support segment at a lower part through a connecting piece, two ends of the second connecting piece are connected to inner sides of the connecting piece, respectively, the first inclined support segment and the plane of the cloth cover form an acute angle structure, and the second inclined support segment and the connecting line of the two ends of the second connecting piece form an obtuse angle structure.

[0030] The application can also adopt the following scheme:

[0031] An improved bed comprises a support frame, a cloth cover and a cloth cover connecting support, the cloth cover connecting support is connected to the top or middle-upper part of the support frame, the cloth cover connecting support comprises two cloth cover connecting rods, two opposite edges of the cloth cover are connected to the cloth cover connecting rods to form a bed surface, the support frame comprises at least two groups of support rod pieces arranged below the cloth cover connecting rods at intervals, each group of support rod pieces comprises two support pieces and two connecting rods, each cloth cover connecting rod is connected to a support piece correspondingly, and two connecting rods are hingedly connected between the two support pieces, at least one connecting rod is provided with an adjusting device, the support pieces at two ends are driven to rotate around the hinged point of the other connecting rod through the adjusting device, so that the distance between the two cloth cover connecting rods corresponding to the two support pieces changes.

[0032] Two said connecting rods include a first connecting rod and a second connecting rod, two ends of the second connecting rod are respectively hinged with one of the support members, two ends of the first connecting rod are respectively hinged with the non-two side end positions of the two support members, at least one connecting rod is composed of two or more than two short pipes, and adjacent two said short pipes are connected through adjusting devices.

[0033] The first connecting rod and the second connecting rod in the same group of support rod members are parallel to each other, and the plane surrounded by the first connecting rod, the second connecting rod and the two support members is perpendicular to the plane where the two cloth connecting rods are located.

[0034] In the two groups of support rod members, each first connecting rod is composed of two or more than two short pipes, and adjacent two said short pipes are connected through adjusting devices.

[0035] In the two groups of support rod members, each second connecting rod is composed of two or more than two short pipes, and adjacent two said short pipes are connected through adjusting devices.

[0036] An internal thread section is arranged on the inner wall of each said short pipe, and the thread directions of adjacent two short pipes are opposite; the adjusting device is a rotating rod, and two ends of the rotating rod are respectively provided with external thread sections corresponding to the internal thread sections of adjacent two short pipes.

[0037] An anti-back mechanism for limiting the rotation of the adjusting device is further arranged on the outer wall of the short pipe.

[0038] The anti-back mechanism is a bolt, a threaded hole is arranged on one end of each short pipe close to the rotating rod, one said bolt is connected on the threaded hole, and the end of the bolt abuts on the external thread section of the rotating rod.

[0039] The adjusting device is a rotating rod with an external thread section, the rotating rod is fixedly connected with one of the short rods or integrally formed, and an internal thread section corresponding to the external thread section of the rotating rod is arranged on the inner wall of the other short rod.

[0040] An anti-back mechanism for limiting the rotation of the rotating rod is further arranged on the outer wall of the short rod with the internal thread section.

[0041] The adjusting device comprises a mounting base, a handle, a movable sleeve, a first pawl and a second pawl, one end of the mounting base is fixed to the end of one of the short pipes, the end of the other short pipe is fixedly sleeved in the movable sleeve, the top surface of the movable sleeve is provided with a plurality of ratchet teeth, a rectangular slot is formed in the top surface of the mounting base, the movable sleeve is sleeved in the mounting base, and the ratchet teeth are located in the rectangular slot in correspondence, the handle is rotatably connected to the mounting base through a rotating shaft, the first pawl and the second pawl are respectively hingedly connected to the front and rear sides of the handle with the rotating shaft as the center, the length of the second pawl is greater than that of the first pawl, the first pawl is advanced along the ratchet teeth with the swinging of the handle, and the second pawl forms a retreat stop.

[0042] A handle locking mechanism is further mounted on the mounting base, the handle locking mechanism comprises a hanging rod and a locking buckle, the hanging rod is fixed to the side wall of the handle, and the locking buckle is mounted on the side wall of the mounting base; when the handle is placed on the top surface of the mounting base, the locking buckle is hung on the hanging rod.

[0043] The bed of the present application can be any one of a folding bed, a camp bed, a pet bed or a pet camp bed.

[0044] As can be seen from the above description of the structure of the present application, compared with the prior art, the present application has the following advantages:

[0045] 1. The bed of the present application adopts the support member arranged in an inclined manner, and the adjusting device is arranged on the support member to make the support member elongate or shorten along the axial direction, so as to change the distance between the corresponding first connecting rod and the other first connecting rod. When the bed cover is installed or the bed cover is loose, the adjusting device is adjusted to make the support member elongate or shorten along the axial direction, so as to change the distance between the corresponding first connecting rod and the other first connecting rod, tighten the cover and maintain the stable supporting force. Therefore, the improved bed of the present application not only facilitates the installation of the bed cover, but also slows down the damage speed of the cover and improves the service life of the bed.

[0046] 2. The bed of the present application is additionally provided with an adjusting device for clamping the movement of the first connecting rod. When the bed cover is installed or the bed cover is loose, the clamping member is driven by the power mechanism to clamp the movement of the first connecting rod, so as to increase the distance between the two first connecting rods, and then tighten the cover to maintain the stable supporting force.

[0047] 3. The bed of the invention, the support frame comprises at least two groups of support rods, each group of support rods comprises two support members and two connecting rods, the two ends of the two connecting rods are respectively hinged with the support members, and at least one connecting rod is provided with an adjusting device, the two ends of the support members are driven to rotate around the hinge point of the other connecting rod through the adjusting device, so that the distance between the two support members changes, thereby changing the distance between the two cloth cover connecting rods, and further changing the tightness of the cloth cover. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 Structure diagram of the cloth cover in the relaxed state of the first embodiment.

[0049] Figure 2 Structure diagram of the cloth cover in the tight state of the first embodiment. Figure 1 Structure diagram of the cloth cover in the tight state of the first embodiment.

[0050] Figure 3 Structure diagram of the cloth cover in the relaxed state of the first embodiment.

[0051] Figure 4 Structure diagram of the cloth cover in the tight state of the first embodiment. Figure 3 Structure diagram of the cloth cover in the tight state of the first embodiment.

[0052] Figure 5 Structure diagram of the first embodiment of the stop mechanism.

[0053] Figure 6 Structure diagram of the second embodiment.

[0054] Figure 7 Structure diagram of the second embodiment. Figure 6 Structure diagram of the second embodiment.

[0055] Figure 8 Structure diagram of the third embodiment.

[0056] Figure 9 Structure diagram of the third embodiment. Figure 8 Structure diagram of the third embodiment.

[0057] Figure 10 Structure diagram of the cloth cover in the relaxed state of the fourth embodiment.

[0058] Figure 11 Structure diagram of the cloth cover in the tight state of the fourth embodiment. Figure 10 Structure diagram of the cloth cover in the tight state of the fourth embodiment.

[0059] Figure 12 Structure diagram of the cloth cover in the tight state of the fourth embodiment.

[0060] Figure 13 Structure diagram of the cloth cover in the tight state of the fourth embodiment. Figure 12 Structure diagram of the cloth cover in the tight state of the fourth embodiment.

[0061] Figure 14 Structure diagram of the adjusting device of the fourth embodiment.

[0062] Figure 15This is a schematic diagram of the anti-reverse mechanism in Example 4.

[0063] Figure 16 This is a schematic diagram of the structure of Example 5 where the fabric cover is in a relaxed state.

[0064] Figure 17 for Figure 16 A sectional view.

[0065] Figure 18 This is a schematic diagram of the structure of Example 5 where the cloth cover is in a taut state.

[0066] Figure 19 for Figure 18 A sectional view.

[0067] Figure 20 This is an exploded view of the adjustment device in Example 5.

[0068] Figure 21 This is a schematic diagram of the structure of Example 6.

[0069] Figure 22 This is a schematic diagram of the structure of Example 7.

[0070] Figure 23 This is a schematic diagram of the structure of Example 8.

[0071] Figure 24 This is a schematic diagram of the structure of Example 9.

[0072] Figure 25 This is a schematic diagram of the anti-reverse mechanism in Example 10.

[0073] Figure 26 This is a schematic diagram of the limiting protrusion of the anti-reverse mechanism in Embodiment 10 being inserted into the notch groove.

[0074] Figure 27 This is a schematic diagram of the limiting protrusion exiting the notch groove of the anti-reverse mechanism in Embodiment 10.

[0075] Figure 28 This is a schematic diagram of the structure of Example 11, where the fabric cover is in a relaxed state.

[0076] Figure 29 for Figure 28 A sectional view.

[0077] Figure 30 This is a schematic diagram of the structure of Example 11, where the fabric cover is in a taut state.

[0078] Figure 31 for Figure 30 A sectional view.

[0079] Figure 32 This is a schematic diagram of the anti-reverse mechanism in Example 11.

[0080] Figure 33 Structure diagram of the cover in a relaxed state for example twelve.

[0081] Figure 34 Structure diagram of the cover in a taut state for example twelve.

[0082] Figure 35 Structure diagram of the cover in a relaxed state for example thirteen.

[0083] Figure 36 Structure diagram of the cover in a taut state for example thirteen. Figure 35 Cross-sectional view of the handle in a released state.

[0084] Figure 37 Structure diagram of a straight ratchet mechanism.

[0085] Figure 38 Structure diagram of the cover in a taut state for example thirteen.

[0086] Figure 39 Structure diagram of the cover in a taut state for example thirteen. Figure 38 Cross-sectional view of the handle in a released state.

[0087] Figure 40 Structure diagram of the cover in a relaxed state for example fourteen.

[0088] Figure 41 Cross-sectional view of the handle in a released state. Figure 40

[0089] Structure diagram of the cover in a taut state for example fourteen. Figure 42

[0090] Cross-sectional view of the handle in a released state. Figure 43 Figure 42 Structure diagram of the cover in a taut state for example fifteen.

[0091] Figure 44 Cross-sectional view of the cover in a taut state for example fifteen.

[0092] Figure 45 Structure diagram of the cover in a relaxed state for example sixteen.

[0093] Figure 46 Structure diagram of the cover in a taut state for example sixteen.

[0094] DETAILED DESCRIPTION Figure 47 A specific embodiment of the present application will now be described with reference to the accompanying drawings.

[0095] A specific embodiment of the present application will now be described with reference to the accompanying drawings.

[0096] Example One

[0097] An improved bed, with reference to​Figure 1 , including support frame 10, cloth cover 20, cloth cover connecting support 30. In the following description, transverse mainly refers to parallel to the length direction of the cloth cover, and longitudinal refers to parallel to the width direction of the cloth cover.

[0098] Referring to Figure 1 or Figure 3 , the cloth cover connecting support 30 is connected to the top of the support frame 10, and the cloth cover connecting support 30 of the embodiment includes two first connecting rods 31. The two first connecting rods 31 are arranged transversely in parallel, and the opposite side edges (length direction) of the cloth cover 20 are respectively sleeved on the two first connecting rods 31 to form a bed surface. The cloth cover has a certain tensile deformation capacity, and the expansion rate is relatively small.

[0099] Referring to Figures 1 to 4 , the above-mentioned support frame 10 includes four support pieces 11 and two second connecting rods 12, and the support pieces 11 and the second connecting rods of the embodiment are all straight circular rods. Of course, in other embodiments, the second connecting rod can also be a straight rod with a rectangular, elliptical or other shape cross section, which is fixedly connected with the bottom of the support piece by a two-way pipe. The end of each first connecting rod 31 is provided with a support piece 11, and the two support pieces 11 corresponding to the same side end of the two first connecting rods 31 are connected by a second connecting rod 12. The second connecting rod 12 is located below the cloth cover 20.

[0100] Among the above-mentioned four support pieces 11, at least one support piece 11 is arranged obliquely and forms a non-right angle with the bed surface. An adjusting device 40 is arranged on the support piece 11 to make the support piece 11 elongate along its axial direction to push the corresponding first connecting rod 31 to the obliquely upward outside of the bed surface to make the cloth cover tight. This arrangement of only one support piece 11 being arranged obliquely and one adjusting device 40 being installed is mainly suitable for special occasions where only one corner of the cloth cover has a relaxation phenomenon.

[0101] However, the bed surface is usually placed parallel to the horizontal plane, and in actual use, people or pets are mostly lying in the middle of the bed surface. Therefore, the relaxation of the bed surface is mostly along the width direction of the two sides. Therefore, the four support pieces 11 shown in the embodiment are all arranged obliquely, and the two support pieces 11 below the same first connecting rod 31 form the same non-right angle with the bed surface, and the two support pieces 11 below different first connecting rods 31 are arranged in opposite directions.

[0102] Referring to Figure 1 or Figure 3 , in order to ensure the support strength of the support frame, from the perspective of mechanical force, the planes where the two support pieces 11 corresponding to the same end of the two first connecting rods 31 are located are perpendicular to the bed surface, and each support piece 11 forms an acute angle with the bed surface.

[0103] Referring to Figures 1 to 4 An adjusting device 40 is arranged on each support 11. The adjusting device 40 comprises a threaded sleeve 41, a movable rod 42, and a connecting sleeve 43 connected to the first connecting rod 31. A connecting hole is formed in the top of the support 11, and an external thread 111 is arranged on the outer wall of the upper part of the support 11. The threaded sleeve 41 is provided with an internal thread 411 connected to the external thread 111. The lower end of the movable rod 42 is inserted into the connecting hole, and a flange 421 is arranged on the outer wall of the upper end of the movable rod 42 and abuts against the top surface of the threaded sleeve 41. The top surface of the flange 421 is fixedly connected to the connecting sleeve 43.

[0104] When the threaded sleeve 41 is rotated and moved upward along the axis of the support 11, the flange 421 of the threaded sleeve 41 is moved upward, the movable rod 42 is extended upward, and the first connecting rod 31 is pushed to move upward, so that the cloth cover 20 is tightened.

[0105] The connecting sleeve 43 is a circular sleeve or a semicircular sleeve. The connecting sleeve 43 and the movable rod 42 are preferably integrally formed, and can also be fixedly connected.

[0106] Referring to Figure 5 A retreat-preventing mechanism is arranged on the support 11 to limit the rotation of the threaded sleeve 41. The retreat-preventing mechanism comprises a bolt 51. A threaded hole 412 is formed in the threaded sleeve 41, and the bolt 51 is connected to the threaded hole 412 and abuts against the first external thread 411.

[0107] When the bed surface is loosened, the bolts of the retreat-preventing mechanisms are loosened, the two threaded sleeves on the same side of the different first connecting rods are synchronously rotated, the threaded sleeves are moved upward, the threaded sleeves are rotated to drive the movable rods to move upward along the axis of the support, the connecting sleeves and the first connecting rods are moved upward to the outside of the cloth cover, and the cloth cover on the side is tightened. The other two threaded sleeves on the first connecting rods are adjusted by the above method, so that the cloth cover on the side is also tightened. Finally, the bolts of the retreat-preventing mechanisms are tightened.

[0108] Example Two

[0109] Referring to Figure 6 and Figure 7The main difference between the present embodiment and embodiment one is the structure of the support 22: the support 11 of the present embodiment is formed by a first inclined support section 112 at the upper part and a second inclined support section 113 at the lower part, which are connected by a three-way piece 114, and the top of the first inclined support section 112 is provided with an adjusting device 40. The two ends of the second connecting rod 12 are respectively connected to the inner side of the three-way piece 114, the first inclined support section 112 forms an acute angle structure with the plane where the cloth cover 20 is located, and the second inclined support section 113 forms an obtuse angle structure with the connecting line of the two ends of the second connecting rod 12.

[0110] Embodiment three

[0111] With reference to Figure 8 and Figure 9 The main difference between the present embodiment and embodiment two is the structure of the second connecting rod: the second connecting rod 12 of the present embodiment is an upwardly protruding arc-shaped bent rod. The use of the upwardly protruding arc-shaped bent rod to connect the two supports 11 can provide better tension and make the structure of the support frame more stable compared to the straight circular rod structure.

[0112] The four supports shown in the above embodiments are all arranged in an inclined manner. Of course, in other embodiments, only the two supports at the bottom of the first connecting rod can be arranged in an inclined manner, and the two supports at the bottom of the other support rod can be arranged vertically. Among the two inclined supports, the adjusting device described above is arranged. When the cloth cover is loose, the adjusting device adjusts the corresponding first connecting rod of the two supports to move obliquely upward outside the cloth cover to tighten the cloth cover. In this case, the bed surface will be inclined. Therefore, in order to prevent the bed surface from being inclined and affecting the use of the bed, an adjusting device can also be arranged below the two supports of the other first support rod. When the two adjusting devices are adjusted, only the corresponding first support rod is vertically raised or lowered.

[0113] Embodiment four

[0114] A bed with an adjustable bed surface cloth cover, with reference to Figures 10 to 13 , comprising a support frame 10, a cloth cover 20, a cloth cover connecting bracket 30, and a crossbar adjusting mechanism. The cloth cover connecting bracket 30 is connected to the top of the support frame 10. The cloth cover connecting bracket 30 of the present embodiment comprises two first connecting rods 31. The two first connecting rods 31 are arranged in parallel and spaced apart. The opposite side edges (lengthwise direction) of the cloth cover 20 are respectively sleeved on the two first connecting rods 31 to form a bed surface.

[0115] With reference to Figures 10 to 13The support frame 10 comprises four support members 11 and two second connecting members 12. The support member 11 is a vertical support plate, and the second connecting member 12 is a straight rod. One support member 11 is installed below each end of the first connecting rod 31. A second connecting member 12 is fixed between the middle portions of the two support members 11 on the same side of the two first connecting rods 31, and the second connecting member 12 is below the cloth cover 20. At least one support member 11 is provided with an adjusting device to clamp the first connecting rod.

[0116] With reference to Figure 11 , Figure 13 and Figure 14 , the adjusting device comprises a support seat 41, a clamping member 42, and a power mechanism 43 for driving the clamping member 42 to move. The clamping member 42 is a circular sleeve in this embodiment. The clamping member 42 is connected to the first connecting rod 31, and the support seat 41 is installed on the support member 11. The support seat 41 is in a U-shaped structure, and an open groove 410 is formed in the middle portion of the support seat 41. The power mechanism 43 is installed on the open groove 410 and comprises a screw rod 431 and a nut 432. The screw rod 431 is rotatably installed on the front and rear sidewalls of the open groove 410, and the screw rod 431 is perpendicular to the first connecting rod 31 in the plane. The nut 432 is connected to the screw rod 431 and located in the open groove 410. The clamping member 42 is fixedly connected to the top surface of the nut 432, and the clamping member 42 can be integrally formed with the nut 432.

[0117] In order to enable the first connecting rod 31 to move in parallel, an adjusting device is installed on each of the two support members 11 below the same first connecting rod 31.

[0118] With reference to Figure 11 and Figure 13 , when the cloth cover is loose, the screw rod 431 is rotated to move the nut 432 along the screw rod. When the nut 432 moves, the clamping member 42 on the top surface of the nut 432 is simultaneously driven to move, thereby clamping the first connecting rod 31 to move outward, and further tightening the cloth cover 20.

[0119] With reference to Figure 15 , in order to prevent the adjusting device from rotating and causing the horizontal adjusting rod to be unstable, a retreat-preventing mechanism is further provided on the support seat 41 to limit the rotation of the screw rod 431. The retreat-preventing mechanism comprises a hanging rod 51 and a hanging rope 52. The hanging rod 51 is fixedly installed on the outer surface of the support seat 41. The retreat-preventing mechanism is mainly applicable to the screw rod 431 provided with a Phillips screw cap. The hanging rope 52 is provided on the Phillips screw cap, and the hanging rope is preferably an iron wire rope. After the screw rod 431 is rotated to the position, the hanging rope 52 is hung on the hanging rod 51.

[0120] Of course, the retreat prevention mechanism of the present application is not limited to the above structure, and other retreat prevention mechanisms can also be used, such as: a threaded hole is formed in the side wall of the nut, and a screw is installed, and the screw is tightened when the screw rod is adjusted in place to support the screw rod.

[0121] Example Five

[0122] With reference to Figures 16 to 19 , the bed of the present embodiment also includes a support frame 10, a cloth cover 20, a cloth cover connecting support 30, and a crossbar adjusting mechanism. The cloth cover connecting support 30 is connected to the top of the support frame 10. The cloth cover connecting support 30 includes two first connecting rods 31, which are arranged in parallel and spaced apart. The opposite side edges (lengthwise) of the cloth cover 20 are respectively sleeved on the two first connecting rods 31 to form a bed surface.

[0123] With reference to Figures 16 to 19 , the support frame 10 of the present embodiment includes four support pieces 11 and two second connecting pieces 12. Each of the two side end portions of each first connecting rod 31 is provided with a support piece 11 below, and a second connecting piece is fixedly arranged between the two support pieces 11 corresponding to the same side of the two first connecting rods 31, and the second connecting piece is located below the cloth cover.

[0124] With reference to Figures 16 to 19 , the support piece 11 of the present embodiment is a vertical support plate. Each of the two side end portions of each first connecting rod 31 is provided with a support piece 11 below. The main difference between the present embodiment and the fourth embodiment is that a second connecting piece 12 is fixedly arranged between the bottom side surfaces of the two support pieces 11 corresponding to the same side of the two first connecting rods 31, and the second connecting piece 12 is a horizontal connecting plate, and the bottom surface of the horizontal connecting plate is supported on the ground. Since the second connecting piece 12 of the present embodiment is supported on the ground, the contact area of the entire bed with the ground is larger, and the stability of the overall support is better. Moreover, the support piece 11 provided with the adjusting device can be directly replaced by the support seat 41. Of course, it can also be integrated with the support seat.

[0125] With reference to Figure 17 , Figure 19 , Figure 20The support 11 is further provided with an adjusting device for clamping the first connecting rod 31 to move outward to tighten the cloth cover. The adjusting device of the embodiment comprises a support seat 41, a clamping member 42 and a power mechanism for driving the clamping member to move. The clamping member 42 is connected to the first connecting rod 31, the support seat 41 is installed on the support 11, the power mechanism is installed on the support seat 41 and comprises a screw rod 431 and a nut 432. Another difference between the embodiment and the fourth embodiment is that the support seat and the clamping member of the adjusting device are different. The support seat 41 of the embodiment is a hollow rectangular box structure, a notch slot 411 is formed in the upper side of the rectangular box, the screw rod 431 is installed at the lower part of the rectangular box, the nut 432 is installed on the screw rod 431 and located in the rectangular box, and the clamping member 42 is fixed on the nut 432. The end of the first connecting rod 31 enters the clamping member 42 from the notch slot 411, and the clamping member 42 of the embodiment is a semicircular sleeve.

[0126] To prevent the adjusting device from rotating and causing the transverse adjusting rod to be unstable, the support seat is further provided with a retreat-stop mechanism for limiting the rotation of the screw rod. The retreat-stop mechanism can be the retreat-stop mechanism of the fourth embodiment, or a threaded hole can be formed in the lower side of the support seat, and a screw is installed in the threaded hole to be tightened on the screw rod when the screw rod is adjusted to the position.

[0127] Embodiment six

[0128] Reference Figure 21 The main difference between the embodiment and the fourth embodiment is that the structure of the support is different. The support 11 of the embodiment is connected by a three-way piece 113 from the upper vertical support section 111 and the lower inclined support section 112, and the adjusting device is arranged on the top of the vertical support section 111. The two ends of the second connecting member 12 are respectively connected to the inner sides of the three-way piece 113, and the connecting line between the inclined support section 112 and the two ends of the second connecting member 12 forms an obtuse angle structure.

[0129] Embodiment seven

[0130] Reference Figure 22 The main difference between the embodiment and the fifth embodiment is that the structure of the support is different. The support of the embodiment is connected by a three-way piece 113 from the upper vertical support section 111 and the lower inclined support section 112, and the adjusting device is arranged on the top of the vertical support section 111. The two ends of the second connecting member 12 are respectively connected to the inner sides of the three-way piece 113, and the connecting line between the inclined support section 112 and the two ends of the second connecting member 12 forms an obtuse angle structure.

[0131] Embodiment eight

[0132] Reference Figure 23The main difference between the present embodiment and embodiment six is the structure of the support and the second connecting member. The support 11 of the present embodiment is formed by connecting the first inclined support section 114 at the upper part and the second inclined support section 115 at the lower part through the three-way piece 113, and the top of the first inclined support section 114 is provided with an adjusting device. The two ends of the second connecting member 12 are connected to the inner side of the three-way piece 113 respectively, the first inclined support section 114 and the plane where the cloth cover 20 is located form an acute angle structure, and the second inclined support section 115 and the line connecting the two ends of the second connecting member 12 form an obtuse angle structure. The second connecting member 12 of the present embodiment adopts an arc-shaped bent rod that protrudes upward.

[0133] Embodiment nine

[0134] With reference to Figure 24 The main difference between the present embodiment and embodiment seven is the structure of the support and the second connecting member. The support of the present embodiment is formed by connecting the first inclined support section at the upper part and the second inclined support section at the lower part through the three-way piece, and the top of the first inclined support section 114 is provided with an adjusting device. The two ends of the second connecting member are connected to the inner side of the three-way piece respectively, the first inclined support section and the plane where the cloth cover is located form an acute angle structure, and the second inclined support section and the line connecting the two ends of the second connecting member form an obtuse angle structure. The second connecting member of the present embodiment adopts an arc-shaped bent rod that protrudes upward.

[0135] Because the lower part of the support of embodiment eight and nine adopts an inclined support section, and an arc-shaped bent rod that protrudes upward is used to connect the two supports, compared with the straight rod structure, better tension can be provided, and the structure of the support frame is more stable.

[0136] Embodiment ten

[0137] The retreat-stop mechanism of the present embodiment, with reference to Figures 25 to 27 , includes a press switch 53, the support seat 41 is provided with a mounting through hole 412 for mounting a screw rod, the head of the screw rod 431 is provided with a mounting groove 4311 at the position deviated from the center, and the press switch 53 is rotatably mounted in the mounting groove 4311 through a rotating shaft.

[0138] With reference to Figure 26 and Figure 27 , the side of the support seat 41 corresponding to the head of the screw rod 431 is provided with a plurality of notch grooves 413 along the circumferential surface of the mounting through hole 412, and the press switch 53 is provided with a limiting protrusion 531 towards the inner side of the notch groove 413. The inner side of the mounting groove 4311 is also provided with a giving recess 4312 for providing space for the limiting protrusion 531 to exit the notch groove.

[0139] With reference to Figure 26 and Figure 27When the screw rod 431 is rotated into position, the hand acts on the press switch 53, the press switch 53 rotates, the limiting protrusion 531 is clamped into the notch groove 413 with the rotation of the press switch 53, and the limiting protrusion 531 cannot move or can only move a small range in the notch groove 413 under the limiting action of the notch groove 413, the screw rod 431 cannot rotate or rotates at a small angle, that is, the function of limiting the rotation of the screw rod is achieved. When the screw rod 431 needs to rotate, the press switch 53 rotates, the limiting protrusion 531 moves out of the notch groove 413 and moves into the gap groove 4312, and the screw rod 431 can rotate freely.

[0140] Embodiment eleven

[0141] A bed facilitating adjustment of a bed cover, referring to Figure 28 , comprising a support frame 10, a cover 20, and a cover connecting support 30. In the following description, the transverse direction mainly refers to the length direction parallel to the cover, and the longitudinal direction refers to the width direction parallel to the cover.

[0142] Referring to Figure 28 or Figure 30 , the cover connecting support 30 is connected to the top or middle upper part of the support frame 10. The cover connecting support 30 of the embodiment comprises two cover connecting rods 32, which are arranged transversely and parallel to each other, and the cover 20 is sleeved on the two cover connecting rods 32 to form a bed surface. The cover 20 has a certain tensile deformation capacity, and the expansion and contraction rate is relatively small.

[0143] Referring to Figures 28 to 31 , the support frame 10 comprises at least two groups of support rod members, and the support rod members specifically shown in the embodiment are two groups, and one group of support rod members is connected to the same side end of the two cover connecting rods 32. Among them, the end can be the end of the cover connecting rod 32, or the part close to the end (from the extension direction of the end of the first connecting rod to the center, less than or equal to one fourth of the length of the entire first connecting rod). Of course, in other embodiments, the support rod members can also be three groups or more than three groups. When the support rod members are three groups or more than three groups, the support rod members are arranged at intervals along the length direction of the two cover connecting rods 32.

[0144] Each group of support rod members comprises two support members 11, a second connecting rod 14 and a first connecting rod 13. Two ends of the second connecting rod 14 are respectively hinged with a support member 11, which is preferably a support rod. Specifically, the bottom of each support member 11 is fixedly sleeved with a hinged lug 111, and the two ends of the second connecting rod 14 are respectively sleeved with a hinged seat 120, and the hinged lug 111 is connected with the hinged seat 120 through a pin shaft. The top end of each support member 11 is detachably connected with the end of the first connecting rod through a T-shaped connecting sleeve. The two ends of the first connecting rod 13 are also respectively hinged at the positions of the non-two side ends of the two support members 11. The hinged manner of the first connecting rod 13 with the support member 11 is the same as the hinged manner of the second connecting rod 14 with the support member 11.

[0145] The second connecting rod 14 and the first connecting rod 13 in the same group of support rod members are parallel to each other, and the plane surrounded by the second connecting rod 14, the first connecting rod 13 and the two support members 11 is perpendicular to the plane where the two cloth cover connecting rods 32 are located.

[0146] In the first connecting rod 13 and the second connecting rod 14 of each group of support rod members, at least one rod member is composed of two or more than two short pipes, and the adjacent two short pipes are connected through an adjusting device. In the two groups of support rod members specifically shown in the embodiment, the second connecting rod 14 is composed of two short pipes one 121, and an adjusting device is connected between the two short pipes one 121. The adjusting device is used to move one or two short pipes one 121 connected thereto, so as to lengthen or shorten the corresponding rod member.

[0147] Referring to Figure 29 An internal thread section 1211 is arranged on the inner wall of each short pipe one 121, and the directions of the threads between the two short pipes one 121 are opposite; the adjusting device is a rotating rod 52, and the two ends of the rotating rod 52 are respectively provided with an external thread section 521 corresponding to the internal thread section 1211 of the two short pipes one. Referring to Figure 43 and Figure 45 When the cloth cover 20 is loose, the two rotating rods 52 are simultaneously rotated, so that the two short pipes one 121 on each rotating rod 52 are simultaneously moved towards the middle part of the rotating rod 52. Since the support member 11 is also hinged with the first connecting rod 13, the support member 11 rotates around the hinged position with the first connecting rod 13 as the axis, the upper part of the support member 11 moves outward, thereby pulling the cloth cover connecting rod 32 to move outward, so as to tighten the cloth cover 20.

[0148] In order to prevent the adjusting device from rotating and moving the short pipes one 121 towards each other, a retreat-stop mechanism for limiting the rotation of the rotating rod 52 is further arranged on the short pipe one 121. Referring to Figure 32The retreat prevention mechanism is a bolt 61. A threaded hole 1210 is formed in one end of the short tube 121 close to the rotating rod 52. The bolt 61 is connected to the threaded hole 1210. The end of the bolt 61 is supported on the external threaded section 521 of the rotating rod 52.

[0149] Embodiment Twelve

[0150] The main difference between this embodiment and Embodiment Eleven is the adjustment device. Referring to Figure 33 and 7 , the adjustment device of this embodiment is also a rotating rod 52 which is integrally formed with one of the short rods 121. Of course, the rotating rod 52 can also be fixedly connected to the short tube 121. The inner threaded section 1211 corresponding to the external threaded section of the rotating rod 52 is arranged on the inner wall of the other short rod 121. In this embodiment, the short rod 121 integrally formed with the rotating rod 52 needs to rotate with the rotating rod 52 during adjustment. Therefore, the other end of the short rod 121 away from the rotating rod 52 is preferably connected to the hinge sleeve in a movable manner, so as to facilitate the rotation of the rotating rod 52 during adjustment. When the cloth cover is loose, the rotating rod 52 is manually rotated, the distance between the short rod 121 connected to the rotating rod 52 and the other short rod 121 is reduced, the support 11 is rotated around the end of the first connecting rod 13, the upper part of the support 11 is moved away from the central axis of the cloth cover, the cloth cover connecting rod 32 is moved outward, and the cloth cover 20 is tightened.

[0151] In addition, in order to prevent the rotating rod from rotating back to the position, a retreat prevention mechanism can be arranged on the outer wall of the short rod 121 where the inner threaded section 1211 is arranged. The retreat prevention mechanism can be the same as that of Embodiment Eleven, that is, a threaded hole and a bolt.

[0152] Embodiment Thirteen

[0153] A bed with a cloth cover convenient to adjust, referring to Figure 35 , comprises a support frame 10, a cloth cover 20, and a cloth cover connecting support 30. The cloth cover connecting support 30 comprises two cloth cover connecting rods 32 which are arranged in a transverse and parallel manner. The cloth cover 20 is arranged on the two cloth cover connecting rods 32 to form a bed surface.

[0154] Referring to Figure 35 , the support frame 10 comprises two groups of support rods. The same side end of the two cloth cover connecting rods 32 is connected to one group of the support rods. Each group of the support rods comprises two support members 11, a second connecting rod 14, and a first connecting rod 13. The two ends of the second connecting rod 14 are respectively hingedly connected to one support member 11. The top end of each support member 11 is detachably connected to the end of the cloth cover connecting rod 32 through a T-shaped connecting sleeve. The two ends of the first connecting rod 13 are respectively hingedly connected to the non-side end positions of the two support members 11.

[0155] Referring to Figure 35 or Figure 37 , the second connecting rod 14 is composed of two short tubes 121 in this embodiment, and an adjusting device is connected between the two short tubes 121. The main difference between this embodiment and embodiment eleven is that the adjusting device adopts different structures.

[0156] The adjusting device of this embodiment is a linear ratchet mechanism, referring to Figures 35 to 39 , which comprises a mounting seat 71, a handle 72, a movable sleeve 73, a first pawl 74 and a second pawl 75. One end of the mounting seat 71 is fixed to the end of one of the short tubes 321, and the end of the other short tube 321 is fixedly sleeved in the movable sleeve 73. A rectangular groove 711 is formed in the top surface of the mounting seat 71, and a plurality of ratchet teeth 731 are arranged on the top surface of the movable sleeve 73. The movable sleeve 73 is arranged in the mounting seat 71, and the ratchet teeth 731 are located in the rectangular groove 413. The handle 72 is rotatably connected to the mounting seat 71 by a rotating shaft 721. The first pawl 74 and the second pawl 75 are respectively hinged on the front and back sides of the handle 72 with the rotating shaft 721 as the center. The length of the second pawl 75 is greater than that of the first pawl 74. The first pawl 74 advances along the ratchet teeth 731 with the swinging of the handle 72, and the second pawl forms a retreat stop.

[0157] Referring to Figure 36 , Figure 37 and Figure 39 , when the linear ratchet mechanism is in the loosening state, that is, the handle 72 is upright, the first pawl 74 is disengaged from the ratchet teeth under the action of the handle 72, and the end of the second pawl 75 abuts against the ratchet teeth 731. When the handle 72 is rotated towards the first pawl 74, the free end of the first pawl 74 abuts against the ratchet teeth (forming an acute angle), and the handle is forced to continue to be pressed down. The angle formed by the first pawl 74 and the corresponding ratchet teeth 731 becomes smaller and smaller, that is, the horizontal direction acting force of the first pawl 74 on the ratchet teeth 731 becomes larger, which pushes the movable sleeve 73 to move, forming the tightening state. Since the ratchet teeth 731 move, the first pawl 74 will be separated from the ratchet teeth 731 with the continuous pressing of the handle 72, that is, the first pawl 74 is loosened from the handle 72, and the second pawl 75 abuts against the ratchet teeth 731 on the back side to form a retreat stop. When the handle 72 is rotated to be parallel to the top surface of the mounting seat 71, the bottom of the rotating end of the first pawl 74 is trapped between the gaps of the two ratchet teeth 731, and the free end of the second pawl 75 is also disengaged from the ratchet teeth 731 and rotates to the top surface of the handle 72.

[0158] When the cloth cover 20 appears to be loose, the straight line ratchet mechanism can push the movable sleeve 73 to move by pressing the handle 72, the movable sleeve 73 drives the short rod one to move to the direction of approaching the other short rod one, since the support member is also hinged with the connecting rod, the support member rotates with the hinged position of the connecting rod as the shaft, the upper part of the support member moves outward, and further pulls the first connecting rod to move outward, so that the cloth cover is tightened.

[0159] With reference to Figure 37 , the mounting seat 71 is further provided with a handle locking mechanism, the handle locking mechanism comprises a hanging rod 81 and a locking buckle 82, the hanging rod 81 is fixed on the side wall of the handle 72, and the locking buckle 72 is installed on the side wall of the mounting seat 71; when the handle 72 is placed on the top surface of the mounting seat 71, the locking buckle 82 is hung on the hanging rod 81 to lock the handle 72.

[0160] Embodiment fourteen

[0161] A bed facilitating adjustment of a cloth cover of a bed surface, with reference to Figure 40 , comprising a support frame 10, a cloth cover 20, and a cloth cover connecting support 30. The cloth cover connecting support 30 comprises two cloth cover connecting rods 32, which are arranged in transverse parallel. The cloth cover 20 is sleeved on the two cloth cover connecting rods 32 on the two sides in transverse direction to form a bed surface.

[0162] With reference to Figure 40 or Figure 42 , the support frame 10 comprises two groups of support rod members, and the same side end of the two cloth cover connecting rods 32 is connected with one group of the support rod members. Each group of the support rod members comprises two support members 11, a second connecting rod 14, and a first connecting rod 13. The two ends of the second connecting rod 14 are respectively hinged with one support member 11, and the two ends of the second connecting rod 14 are respectively sleeved with one hinged seat 120, and the hinged ear 111 is connected with the hinged seat 120 through a pin shaft. The top end of each support member 11 is detachably connected with the end of the cloth cover connecting rod 32 through a T-shaped connecting sleeve. The two ends of the first connecting rod 13 are also hinged with the non-two side end positions of the two support members 11, and the hinged manner is the same as that of the second connecting rod 14.

[0163] The main difference between the embodiment and the embodiment eleven is that, with reference to Figure 40 and Figure 41 , in the two groups of support rod members of the embodiment, the first connecting rod 13 is composed of two short tubes two 131, and one adjusting device is connected between the two short tubes two 131.

[0164] With reference to Figure 41 and Figure 43Each of the short tubes 131 has an inner thread segment 1311 on the inner wall, and the thread directions of the two short tubes 131 are opposite; the adjusting device is a rotating rod 52, and the two ends of the rotating rod 52 are respectively provided with outer thread segments 521 corresponding to the inner thread segments of the two short tubes 131. When the cloth cover 20 is loose, the two rotating rods 52 are simultaneously rotated, so that the two short tubes 131 on each rotating rod are simultaneously moved away from the middle part of the rotating rod, and since the bottom of the supporting member 11 is hinged to the second connecting rod 14, the supporting member 11 can rotate outwardly with the bottom as the axis, thereby pulling the cloth cover connecting rod 32 to move outwardly, so that the cloth cover is tightened.

[0165] To prevent the adjusting device from rotating to move the short tubes 131 towards each other, the short tube 131 is further provided with a retreat-stop mechanism for limiting the rotation of the rotating rod 52. The retreat-stop mechanism is the same as that of the eleventh embodiment, and the present embodiment will not be described in detail.

[0166] Embodiment Fifteen

[0167] The main difference between the present embodiment and the fourteenth embodiment is that the adjusting device is different. Referring to Figure 44 and Figure 45 , the adjusting device of the present embodiment is also a rotating rod 52, which is integrally formed with one of the short tubes 131. Of course, the rotating rod 52 can also be fixedly connected with the short tube 131. The inner wall of the other short tube 131 is provided with an inner thread segment 1311 corresponding to the outer thread segment of the rotating rod 52. In the present embodiment, since the short tube 131 integrally formed with the rotating rod 52 needs to rotate with the rotating rod 52 during adjustment, the other end of the short tube 131 away from the rotating rod 52 is preferably connected with the hinged seat in a movable manner, so as to facilitate the rotation of the rotating rod 52 during adjustment. When the cloth cover is loose, the rotating rod 52 is manually rotated, so that the distance between the short tube 131 connected with the rotating rod 52 and the other short tube 131 is increased, so as to drive the supporting member 11 to swing around the end of the second connecting rod 12, and the upper part of the supporting member 11 is moved away from the central axis of the cloth cover, thereby driving the cloth cover connecting rod 32 to move outwardly, and the cloth cover 20 is tightened.

[0168] In addition, to prevent the rotating rod from rotating back when it is rotated to the position, a retreat-stop mechanism can be arranged on the outer wall of the short tube 131 provided with the inner thread segment 1311, and the same thread hole and bolt cooperation mode as that of the eleventh embodiment can be adopted.

[0169] Embodiment Sixteen

[0170] A bed with a cloth cover on the bed surface, referring to Figure 46, including support frame 10, cloth cover 20, cloth cover connecting support 30. Cloth cover connecting support 30 includes two cloth cover connecting rods 32, which are arranged horizontally and parallel to each other, and cloth cover 20 is sleeved on the two cloth cover connecting rods 32 on both sides to form a bed surface.

[0171] With reference to Figure 46 and Figure 47 , support frame 10 includes two groups of support rods, and one group of support rods is connected to the same side end of the two cloth cover connecting rods 32. Each group of support rods includes two support members 11, a second connecting rod 14, and a first connecting rod 13. The two ends of the second connecting rod 14 are respectively hinged to one support member 11, and the top end of each support member 11 is detachably connected to the end of the cloth cover connecting rod 32 through a T-shaped connecting sleeve. The two ends of the first connecting rod 13 are also respectively hinged to the non-two side end positions of the two support members 11.

[0172] With reference to Figure 46 or Figure 47 , in the two groups of support rods of the embodiment, the first connecting rod 13 is composed of two sections of short pipes two 131, and an adjusting device is connected between the two sections of short pipes two 131. The main difference between this embodiment and embodiment eleven is that the structures of the adjusting devices are different.

[0173] The adjusting device used in this embodiment is the straight-line ratchet mechanism in embodiment thirteen, which will not be described in detail here.

[0174] When the length of the first connecting rod 31 or the cloth cover connecting rod 32 is relatively large, in order to facilitate transportation, each first connecting rod 31 or cloth cover connecting rod 32 in the above embodiments can also be detachably connected by multiple connecting rods.

[0175] The bed described above can be any one of a folding bed, a camping bed, a pet bed, or a pet camping bed.

[0176] The above is only a specific implementation of the present application, but the design concept of the present application is not limited to this. Any non-essential modification of the present application using this concept shall be deemed to be an infringement of the protection scope of the present application.

Claims

1. An improved bed comprising a support frame, a cloth cover and a cloth cover connecting support, said cloth cover connecting support being connected to the top or upper middle portion of said support frame, said cloth cover connecting support comprising two first connecting rods, two opposite edges of said cloth cover being connected to said first connecting rods respectively to form a bed surface, characterized in that: The support frame comprises at least two groups of support rods arranged at the bottom of the first connecting rod, each group of support rods comprises two support rods and a second connecting rod, the lower ends of the two support rods are fixed to the two ends of the second connecting rod, the top end of each support rod is connected to the first connecting rod, at least one of the support rods is arranged obliquely and forms a non-right angle with the bed surface, and an adjusting device is arranged on the support rod to extend or shorten the support rod along its axial direction, so that the distance between the first connecting rod and another first connecting rod is changed; the adjusting device comprises a threaded sleeve, a movable rod and a connecting sleeve, the connecting sleeve is connected to the first connecting rod, a connecting hole is formed in the top of the support rod, an external thread is arranged on the outer wall of the upper part of the support rod, the threaded sleeve is provided with an internal thread, the internal thread of the threaded sleeve is connected to the external thread, the lower end of the movable rod is inserted into the connecting hole, and a flange is arranged on the outer wall of the upper end of the movable rod and abuts against the top surface of the threaded sleeve, and the top surface of the flange is fixedly connected to the connecting sleeve.

2. An improved bed as claimed in claim 1, wherein: The two support rods arranged below the same first connecting rod are arranged obliquely and form the same non-right angle with the bed surface, and each of the two support rods is provided with the adjusting device.

3. An improved bed as claimed in claim 1, wherein: The four support rods are arranged obliquely, the two support rods arranged below the same first connecting rod form the same non-right angle with the bed surface, and the two support rods arranged below different first connecting rods are arranged in opposite directions; each of the support rods is provided with the adjusting device.

4. An improved bed as claimed in claim 3, wherein: The planes in which the two support rods corresponding to the same end of the two first connecting rods are arranged are perpendicular to the bed surface, and each support rod forms an acute angle with the bed surface.

5. An improved bed as claimed in claim 1, wherein: The movable rod, the flange and the connecting sleeve are integrally formed.

6. An improved bed as claimed in claim 1, wherein: The connecting sleeve is a circular sleeve or a semicircular sleeve.

7. An improved bed as claimed in claim 1, wherein: A retreat limiting mechanism is further arranged on the support rod to limit the rotation of the threaded sleeve.

8. An improved bed as claimed in claim 7, characterised in that: The retreat limiting mechanism comprises a bolt, a threaded hole is formed in the threaded sleeve, and the bolt is connected to the threaded hole and abuts against the external thread at the end.

9. An improved bed as claimed in claim 1, wherein: Each support rod is connected by a connecting piece between a first oblique support segment at the upper part and a second oblique support segment at the lower part, the two ends of the second connecting rod are connected to the inner sides of the connecting pieces, the adjusting device is arranged on the first oblique support segment, and the line connecting the two ends of the second connecting rod forms an obtuse angle with each second oblique support segment.

10. An improved bed as claimed in claim 1, wherein: The second connecting rod is a straight rod or an arc-shaped bent rod protruding upward.

11. An improved bed as claimed in claim 1, wherein: The bed is any one of a folding bed, a field bed and a pet bed.

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