Improved bed

Abstract

An improved bed, comprising a supporting frame (10), a cloth cover (20), and a cloth cover connecting support (30). The cloth cover connecting support (30) is connected to the top of the supporting frame (10). The cloth cover connecting support (30) comprises two first connecting rods (31). The cloth cover (20) is connected to the first connecting rods (31) to form a bed surface. The supporting frame (10) comprises four supporting members (11) and two second connecting rods (12). An end portion of each first connecting rod (31) is correspondingly provided with one supporting member (11). One second connecting rod (12) is connected between the two supporting members (11) corresponding to the end portions of the two first connecting rods (31) on a same side. At least one supporting member (11) is obliquely arranged and forms a non-right included angle with the bed surface, and an adjustment device (40) is provided on the supporting member (11) such that the supporting member extends or retracts in the axial direction thereof. By adjusting the adjustment device (40), the supporting member (11) can extend or retract in the axial direction thereof, so as to drive the distance between the corresponding first connecting rod (31) and the other first connecting rod (31) to change, thereby facilitating the installation of the cloth cover (20) of the bed surface, and slowing down the damage speed of the cloth cover (20), prolonging the service life of the bed.

Description

An improved bed Technical Field

[0001] The present invention relates to the technical field of furniture products, and more particularly to an improved bed. Background Art

[0002] A bed is a place that can provide a comfortable resting place for people or pets, especially in harsh outdoor environments. The Chinese utility model with authorization announcement number CN 218869016U discloses a pet bed, comprising: a first longitudinal bar, each end of which is provided with a first leg; a second longitudinal bar, each end of which is provided with a second leg, the second longitudinal bar being spaced apart from the first longitudinal bar; a first cross bar, one end of the first cross bar being connected to the first leg at one end of the first longitudinal bar, the other end of the first cross bar being connected to the second leg at one end of the second longitudinal bar, the first cross bar being located below the first and second longitudinal bars; a second cross bar, one end of the second cross bar being connected to the first leg at the other end of the first longitudinal bar, the other end of the second cross bar being connected to the second leg at the other end of the second longitudinal bar, the second cross bar being located below the first and second longitudinal bars; and a support pad, the two edges of the support pad in the longitudinal direction of which are respectively connected to the first and second cross bars.

[0003] To provide better support, support cushions typically feature a fabric cover with a low stretch factor. However, because the support cushions are suspended and taut, the weight of a pet (especially a heavy pet) can cause this fabric to undergo irreversible stretching. This can cause the bed surface to sag and reduce its support. Without proper care to restore the tautness, the bed surface struggles to provide stable support for pets, making it difficult for them to rest securely. Furthermore, this sag worsens over time, leading to collapse and significantly shortening its lifespan. This necessitates replacing the fabric cover, a tedious and costly process. For pet beds with covers that cannot be removed or replaced, the entire bed becomes scrapped.

[0004] Summary of the Invention

[0005] The present invention provides an improved bed to solve the shortcomings of existing beds, such as loose bed covers, reduced supporting force, difficulty for people or pets to rest soundly, and shortened service life.

[0006] The present invention adopts the following technical solutions:

[0007] An improved bed, comprising a support frame, a cloth cover and a cloth cover connecting bracket, the cloth cover connecting bracket being connected to the top or upper middle part of the support frame, the cloth cover connecting bracket comprising two first connecting rods, and two opposite edges of the cloth cover being respectively connected to the first connecting rods to form a bed surface, characterized in that: the support frame comprises at least two groups of support rods spaced apart at the bottom of the first connecting rod, each group of support rods 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, the top end of each of the support rods is connected to the first connecting rod, at least one of the support members is tilted and forms a non-right angle with the bed surface, an adjustment device is provided on the support member to make the support member extend or shorten along its axial direction, so as to drive the distance between its corresponding first connecting rod and the other first connecting rod to change.

[0008] The two supporting members below the first connecting rod are both tilted and form the same non-right angle with the bed surface. The two supporting members are each provided with an adjustment device.

[0009] The four support members are all arranged at an angle, and the two support members under the same first connecting rod form the same non-right angle with the bed surface, and the two support members under different first connecting rods have opposite inclination directions; each support member is provided with an adjustment device.

[0010] The planes where the two supporting members corresponding to the same ends of the two first connecting rods are located are perpendicular to the bed surface, and each supporting member forms an acute angle with the bed surface.

[0011] The adjusting device includes a threaded sleeve, a movable rod, and a connecting sleeve. The connecting sleeve is connected to the first connecting rod. A connecting hole is provided on the top of the support member. An external thread is provided on the upper outer wall of the support member. 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 correspondingly inserted into the connecting hole. A flange is also provided on the outer side wall of the upper end to abut the top surface of the threaded sleeve. The top surface of the flange is fixedly connected to the connecting sleeve.

[0012] The movable rod, the flange and the connecting sleeve are integrally formed.

[0013] The connecting sleeve is a circular sleeve or a semicircular jacket.

[0014] The support member is also provided with a stop mechanism for limiting the rotation of the threaded sleeve.

[0015] The anti-retraction mechanism includes a bolt. A threaded hole is provided on the screw sleeve. The bolt is connected to the threaded hole, and the end of the bolt is supported on the first external thread.

[0016] Each of the support members is composed of an upper first inclined support section and a lower second inclined support section connected by a connecting member. The 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 an obtuse angle structure is formed between the connecting line of the two ends of the second connecting rod and each of the second inclined support sections.

[0017] The second connecting rod is a straight rod or an upwardly protruding arc-shaped curved rod.

[0018] The present invention can also adopt the following scheme:

[0019] An improved bed includes a support frame, a cloth cover and a cloth cover connecting bracket, the cloth cover connecting bracket is connected to the top or upper middle part of the support frame, the cloth cover connecting bracket includes two first connecting rods, and the two opposite edges of the cloth cover are respectively connected to the first connecting rods to form a bed surface. At least one adjustment device for clamping the first connecting rod for movement is fixed on the support frame, and the adjustment device includes a clamping member and a power mechanism for driving the clamping member to move. The clamping member is connected to the first connecting rod, and the movement of the clamping member is driven by the power mechanism to drive the corresponding first connecting rod to move, so that the distance between the two first connecting rods changes.

[0020] The support frame includes at least two groups of support rods spaced apart at the bottom of the first connecting rod, each group of support rods includes 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 end of each support rod is connected to the first connecting rod.

[0021] A support base is installed on at least one of the support members, and the support base is provided with the power mechanism, which includes a screw and a nut. The screw is rotatably mounted on the support base, and the screw and the first connecting rod are perpendicular to each other in a plane. The nut is connected to the screw, and the clamping member is fixedly connected to the top surface of the nut.

[0022] The two supporting members below the same first connecting rod are respectively equipped with a supporting seat.

[0023] The clamping piece is a circular sleeve or a semicircular jacket.

[0024] The jacket and the nut are integrally formed.

[0025] The support seat is also provided with a stop mechanism for limiting the rotation of the screw.

[0026] The anti-retraction mechanism includes a hanging rod and a hanging rope. The hanging rod is fixedly installed on the outer side of the support seat, and the hanging rope is provided on the nut of the screw. After the screw is rotated into place, the hanging rope is hung on the hanging rod.

[0027] The anti-retreat mechanism includes a push switch, a mounting through hole for installing the screw is provided on the support seat, a mounting groove is provided at a position off-center of the head of the screw, the push switch is rotatably installed in the mounting groove through a rotating shaft, a plurality of notch grooves are provided along the circumferential surface of its mounting through hole on the side of the support seat corresponding to the screw head, the push switch is provided with a limiting protrusion adapted to the notch groove facing the inner side of the notch groove, and a clearance groove is also provided on the inner side of the mounting groove to provide space for the limiting protrusion to exit the notch groove, when the limiting protrusion is stuck in the notch groove, the rotation of the screw can be restricted, and when the limiting protrusion exits the notch groove, the screw can rotate freely.

[0028] The support member is a vertical support member perpendicular to the cloth cover, and both ends of the second connecting member are respectively connected to the middle and lower part or the bottom of the vertical support member.

[0029] The support member is composed of an upper vertical support section and a lower inclined support section connected by a connecting member. The two ends of the second connecting member are respectively connected to the inner side of the connecting member, and the line connecting the inclined support section and the two ends of the second connecting member forms an obtuse angle structure.

[0030] The support member is composed of an upper first inclined support section and a lower second inclined support section connected by a connecting member. The two ends of the second connecting member are respectively connected to the inner side of the connecting member. The first inclined support section and the plane where the cloth cover is located form an acute angle structure, while the second inclined support section and the line connecting the two ends of the second connecting member form an obtuse angle structure.

[0031] The present invention can also adopt the following scheme:

[0032] An improved bed comprises a support frame, a cloth cover and a cloth cover connecting bracket, wherein the cloth cover connecting bracket is connected to the top or upper middle part of the support frame, the cloth cover connecting bracket comprises two cloth cover connecting rods, and two opposite edges of the cloth cover are respectively connected to the cloth cover connecting rods to form a bed surface, and the support frame comprises at least two groups of support rods spaced apart below the cloth cover connecting rods, each group of support rods comprises two support members and two connecting rods, each of the cloth cover connecting rods is respectively connected to one of the support members, and the two connecting rods are respectively hinged between the two support members, and at least one connecting rod is provided with an adjusting device, which drives the support members at both ends to rotate around the hinge point of the other connecting rod as the axis, so that the distance between the two corresponding cloth cover connecting rods on the two support members changes.

[0033] The two connecting rods include a first connecting rod and a second connecting rod, the two ends of the second connecting rod are respectively hinged to one of the support members, and the two ends of the first connecting rod are respectively hinged to the non-side end positions of the two support members. At least one connecting rod is composed of two or more short tubes, and the two adjacent short tubes are connected by an adjustment device.

[0034] The first connecting rod and the second connecting rod in the same group of supporting rods are parallel to each other, and the plane surrounded by the first connecting rod, the second connecting rod and the two supporting members is perpendicular to the plane where the two cloth sleeve connecting rods are located.

[0035] In the two groups of supporting rods, each first connecting rod is composed of two or more short tubes, and two adjacent short tubes are connected by an adjusting device.

[0036] In the two groups of supporting rods, each second connecting rod is composed of two or more short tubes, and two adjacent short tubes are connected by an adjusting device.

[0037] An inner thread segment is provided on the inner wall of each short tube, and the thread directions of two adjacent short tubes are opposite; the adjusting device is a rotating rod, and both ends of the rotating rod are provided with external thread segments corresponding to the inner thread segments of the two adjacent short tubes.

[0038] A stop mechanism for limiting the rotation of the adjusting device is also provided on the outer wall of the short tube.

[0039] The anti-retraction mechanism is a bolt. A threaded hole is formed at one end of each short tube close to the rotating rod. A bolt is connected to the threaded hole, and the end of the bolt is supported on the external thread section of the rotating rod.

[0040] The adjusting device is a rotating rod with an external thread section, which is fixedly connected to or integrally formed with one of the short rods, and an internal thread section corresponding to the external thread section of the rotating rod is provided on the inner wall of the other short rod.

[0041] The outer wall of the short rod having the internal thread section is also provided with a stop mechanism for limiting the rotation of the rotating rod.

[0042] The adjusting device includes a mounting seat, a handle, a movable sleeve, a first pawl and a second pawl. One end of the mounting seat is fixed to the end of one of the short tubes, and the end of the other short tube is fixedly sleeved in the movable sleeve. The top surface of the movable sleeve is provided with a plurality of ratchets, and a rectangular groove is opened on the top surface of the mounting seat. The movable sleeve is passed through the mounting seat, and the ratchets are correspondingly located in the rectangular groove. The handle is rotatably connected to the mounting seat through a rotating shaft. The front and rear sides of the handle centered on the rotating shaft are respectively hinged with the first pawl and the second pawl. The length of the second pawl is greater than that of the first pawl. The first pawl advances along the ratchet as the handle swings, and the second pawl forms a stop.

[0043] A handle locking mechanism is also installed on the mounting seat, and the handle locking mechanism includes a hanging rod and a locking buckle. The hanging rod is fixed on the side wall of the handle, and the locking buckle is installed on the side wall of the mounting seat. When the handle is placed flat on the top surface of the mounting seat, the locking buckle is hung on the hanging rod.

[0044] The bed of the present invention may be any one of a folding bed, a camp bed, a pet bed or a pet camp bed.

[0045] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0046] 1. The bed of the present invention utilizes an inclined support frame with adjustment devices configured to extend or contract the support members along their axial direction, thereby varying the distance between the corresponding first connecting rod and the other first connecting rod. When installing a bed cover or if the cover becomes loose, the adjustment devices are adjusted to extend or contract the support members along their axial direction, thereby varying the distance between the corresponding first connecting rod and the other first connecting rod, tightening the cover and maintaining its stable support force. Therefore, the improved bed of the present invention not only facilitates installation of the cover but also reduces wear and tear, thereby increasing the bed's service life.

[0047] 2. The bed of the invention is additionally provided with an adjusting device for clamping the first connecting rod to move. When the bed cover or the bed cover becomes loose during installation, the power mechanism drives the clamping member to clamp the first connecting rod to move, thereby increasing the distance between the two first connecting rods, thereby tightening the cover to maintain its stable supporting force.

[0048] 3. The bed of the invention has a support frame comprising at least two groups of support rods, each group of support rods comprising two support members and two connecting rods, the two ends of the two connecting rods being hinged to the support members respectively, and at least one of the connecting rods being provided with an adjusting device, which drives the support members at both ends to rotate around the hinge point of the other connecting rod as the axis, so that the upper distance between the two support members changes, thereby driving the distance between the two cloth cover connecting rods to change accordingly, thereby changing the tightness of the cloth cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a structural schematic diagram of the cloth cover in a relaxed state according to the first embodiment.

[0050] FIG2 is a cross-sectional view of FIG1 .

[0051] FIG3 is a structural schematic diagram of the cloth cover in a tightened state according to the first embodiment.

[0052] FIG4 is a cross-sectional view of FIG3 .

[0053] FIG5 is a schematic structural diagram of the anti-retraction mechanism of the first embodiment.

[0054] FIG6 is a schematic structural diagram of the second embodiment.

[0055] FIG7 is a right side view of FIG6 .

[0056] FIG8 is a schematic structural diagram of the third embodiment.

[0057] FIG9 is a right side view of FIG8 .

[0058] FIG10 is a structural schematic diagram of the fourth embodiment of the cloth cover in a relaxed state.

[0059] FIG11 is a cross-sectional view of FIG10 .

[0060] FIG12 is a structural schematic diagram of the fourth embodiment of the cloth cover in a tightened state.

[0061] FIG13 is a cross-sectional view of FIG12 .

[0062] FIG14 is an exploded schematic diagram of the regulating device of the fourth embodiment.

[0063] FIG15 is a schematic structural diagram of the anti-retraction mechanism of the fourth embodiment.

[0064] FIG16 is a structural schematic diagram of the fifth embodiment of the cloth cover in a relaxed state.

[0065] FIG17 is a cross-sectional view of FIG16 .

[0066] FIG18 is a structural diagram of the fifth embodiment in which the cloth cover is in a tightened state.

[0067] FIG19 is a cross-sectional view of FIG18 .

[0068] FIG20 is an exploded schematic diagram of the regulating device of the fifth embodiment.

[0069] FIG21 is a schematic structural diagram of the sixth embodiment.

[0070] FIG22 is a schematic structural diagram of the seventh embodiment.

[0071] FIG23 is a schematic structural diagram of the eighth embodiment.

[0072] FIG24 is a schematic structural diagram of the ninth embodiment.

[0073] FIG25 is a schematic structural diagram of the anti-retraction mechanism of the tenth embodiment.

[0074] FIG. 26 is a schematic diagram of the limiting protrusion of the anti-retraction mechanism of the tenth embodiment being engaged with the notch groove.

[0075] FIG. 27 is a schematic diagram of the limiting protrusion of the anti-retraction mechanism of the tenth embodiment exiting the notch groove.

[0076] FIG28 is a structural diagram of the cloth cover in the relaxed state according to the eleventh embodiment.

[0077] FIG29 is a cross-sectional view of FIG28.

[0078] FIG30 is a structural diagram of the cloth cover in a tightened state according to the eleventh embodiment.

[0079] FIG31 is a cross-sectional view of FIG30 .

[0080] FIG32 is a schematic structural diagram of the anti-retraction mechanism of the eleventh embodiment.

[0081] FIG33 is a structural diagram of the cloth cover in a relaxed state according to the twelfth embodiment.

[0082] FIG34 is a structural diagram of the cloth cover in a tightened state according to the twelfth embodiment.

[0083] FIG35 is a structural diagram of the cloth cover in a relaxed state according to the thirteenth embodiment.

[0084] FIG36 is a cross-sectional view of the handle in FIG35 in a released state.

[0085] FIG37 is a schematic structural diagram of a linear ratchet mechanism.

[0086] FIG38 is a structural diagram of the cloth cover in a tightened state according to the thirteenth embodiment.

[0087] FIG39 is a cross-sectional view of the handle in FIG38 in a released state.

[0088] FIG40 is a schematic structural diagram of the cloth cover in a relaxed state according to the fourteenth embodiment.

[0089] FIG41 is a cross-sectional view of FIG40 .

[0090] FIG42 is a schematic structural diagram of the cloth cover in a tightened state according to the fourteenth embodiment.

[0091] FIG43 is a cross-sectional view of FIG42.

[0092] FIG44 is a cross-sectional view of the cloth cover of the fifteenth embodiment in a relaxed state.

[0093] Figure 45 is a cross-sectional view of the fifteenth embodiment in which the cloth cover is in a tightened state.

[0094] FIG46 is a schematic structural diagram of the cloth cover in a relaxed state according to the sixteenth embodiment.

[0095] Figure 47 is a structural schematic diagram of the sixteenth embodiment of the cloth cover in a tightened state. DETAILED DESCRIPTION

[0096] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0097] Example 1

[0098] 1 , an improved bed comprises a support frame 10, a cloth cover 20, and a cloth cover connecting bracket 30. In the following description, the transverse direction mainly refers to the length direction parallel to the cloth cover, while the longitudinal direction refers to the width direction parallel to the cloth cover.

[0099] Referring to Figures 1 and 3 , the cloth cover connecting bracket 30 is connected to the top of the support frame 10. In this embodiment, the cloth cover connecting bracket 30 includes two first connecting rods 31. These first connecting rods 31 are arranged in a transversely parallel manner. The opposing edges (lengthwise) of the cloth cover 20 are respectively placed over the first connecting rods 31 to form the bed surface. The cloth cover has a certain degree of tensile deformation capability, but its expansion and contraction rate is relatively small.

[0100] Referring to Figures 1 to 4, the support frame 10 includes four support members 11 and two second connecting rods 12. In this embodiment, the support members 11 and the second connecting rods are both straight round rods. Of course, in other embodiments, the second connecting rods can also be straight rods with other shapes such as rectangular or elliptical cross-sections, which can be fixedly connected to the bottom of the support members using a two-way pipe fitting. Each end of the first connecting rod 31 is provided with a corresponding support member 11, and a second connecting rod 12 is connected between the two support members 11 corresponding to the ends of the same side of the two first connecting rods 31. The second connecting rod 12 is located below the cloth cover 20.

[0101] At least one of the four support members 11 is tilted, forming a non-perpendicular angle with the bed surface. This support member 11 is equipped with an adjustment device 40, which allows the support member 11 to extend along its axial direction, thereby pushing its corresponding first connecting rod 31 upward and diagonally outward from the bed surface, tightening the fabric cover. This tilted arrangement with only one support member 11 and one adjustment device 40 is primarily suitable for special applications where the fabric cover has slack at only one corner.

[0102] However, since the bed surface is typically placed parallel to the horizontal plane, and in actual use, people or pets mostly lie in the middle of the bed surface, the slack in the bed surface is mostly stretched along the width direction on both sides. Therefore, the four support members 11 shown in this embodiment are all arranged at an angle, and the two support members 11 below the same first connecting rod 31 form the same non-perpendicular angle with the bed surface, while the two support members 11 below different first connecting rods 31 have opposite inclination directions.

[0103] 1 or 3 , in order to ensure the support strength of the support frame, from the perspective of mechanical force, the planes of the two support members 11 corresponding to the same end of the two first connecting rods 31 are perpendicular to the bed surface, and each support member 11 forms an acute angle with the bed surface.

[0104] 1 to 4 , each support member 11 is provided with an adjustment device 40. The adjustment device 40 includes a threaded sleeve 41, a movable rod 42, and a connecting sleeve 43. The connecting sleeve 43 is connected to the first connecting rod 31. A connecting hole is provided at the top of the support member 11. An external thread 111 is provided on the upper outer wall of the support member 11. The threaded sleeve 41 is provided with an internal thread 411. The internal thread 411 of the threaded sleeve 41 is connected to the external thread 111. The lower end of the movable rod 42 is correspondingly inserted into the connecting hole. A flange 421 is further provided on the outer wall of the upper end to abut against the top surface of the threaded sleeve. The top surface of the flange 421 is fixedly connected to the connecting sleeve 43.

[0105] When the threaded sleeve 41 rotates and moves obliquely upward along the axis of the support member 11, the threaded sleeve 41 pushes the flange 421 to move upward, causing the movable rod 42 to extend obliquely upward. The movable rod 42 pushes the first connecting rod 31 to move obliquely upward, tightening the cloth cover 20.

[0106] The connecting sleeve 43 is a circular sleeve or a semicircular jacket. The connecting sleeve 43 and the movable rod 42 are preferably integrally formed, but can also be fixedly connected.

[0107] 5 , the support member 11 is further provided with a stopper mechanism for limiting the rotation of the threaded sleeve 41. The stopper mechanism includes a bolt 51. A threaded hole 412 is defined in the threaded sleeve 41. The bolt 51 is connected to the threaded hole 412, with its distal end being held against the first external thread 411.

[0108] When the bed surface becomes loose, first loosen the bolts on each anti-recognition mechanism, and synchronously rotate the two threaded sleeves on the same side of different first connecting rods to move the threaded sleeves upward. When the threaded sleeves rotate, they drive the movable rod to move obliquely upward along the axis of the support member, and then drive the connecting sleeve and the first connecting rod to move obliquely upward to the outside of the cloth cover until the cloth cover on this side is tightened; use the above method to adjust the other two threaded sleeves on the first connecting rod to tighten the cloth cover on this side; finally, tighten the bolts on each anti-recognition mechanism.

[0109] Example 2

[0110] 6 and 7 , the primary difference between this embodiment and the first embodiment lies in the structure of the support member 22: the support member 11 of this embodiment is composed of an upper first inclined support section 112 and a lower second inclined support section 113 connected via a tee 114. An adjustment device 40 is provided at the top of the first inclined support section 112. The two ends of the second connecting rod 12 are respectively connected to the inner side of the tee 114. The first inclined support section 112 forms an acute angle with the plane of the cloth cover 20, while the second inclined support section 113 forms an obtuse angle with the line connecting the two ends of the second connecting member 12.

[0111] Example 3

[0112] Referring to Figures 8 and 9 , the primary difference between this embodiment and the second embodiment lies in the structure of the second connecting rod: This embodiment utilizes an upwardly convex curved rod. This upwardly convex curved rod connects the two support members 11, providing greater tension than a straight rod structure, making the support frame more stable.

[0113] The four support members shown in the above embodiments are all arranged in an inclined manner. Of course, in other embodiments, it is also possible that only the two support members at the bottom of one first connecting rod are arranged inclined, while the two support members at the bottom of the other support rod are arranged vertically. The above-mentioned adjustment device is provided in both inclined support members. When the cloth cover becomes loose, the adjustment device adjusts the corresponding first connecting rods on the two support members to move obliquely upward to the outside of the cloth cover to tighten the cloth cover. In this case, the bed surface will tilt. Therefore, in order to prevent the bed surface from tilting and affecting the use of the bed. An adjustment device can be provided on each of the two support members below the other first support rod. When the two adjustment devices are adjusted, only the corresponding first support rods are vertically raised or lowered.

[0114] Example 4

[0115] A bed with an adjustable cover, as shown in Figures 10 to 13, includes a support frame 10, a cover 20, a cover connecting bracket 30, and a crossbar adjustment mechanism. The cover connecting bracket 30 is connected to the top of the support frame 10. The cover connecting bracket 30 of this embodiment includes two first connecting rods 31. The two first connecting rods 31 are arranged in parallel and spaced apart. The opposite side edges (lengthwise) of the cover 20 are respectively mounted on the two first connecting rods 31 to form the bed surface.

[0116] Referring to Figures 10 to 13 , the support frame 10 comprises four support members 11 and two second connecting members 12. In this embodiment, the support members 11 are vertical support plates, while the second connecting members 12 are straight rods. A support member 11 is mounted 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 corresponding to the same side of the two first connecting rods 31, located below the cloth cover 20. At least one of the support members 11 is also equipped with an adjustment device to clamp the first connecting rod for movement.

[0117] 11, 13 and 14, the adjustment device includes a support base 41, a clamping member 42 and a power mechanism 43 for driving the clamping member 42 to move. The clamping member 42 of this embodiment is a circular sleeve. The clamping member 42 is connected to the first connecting rod 31, and the support base 41 is mounted on the support member 11. The support base 41 of this embodiment has a U-shaped structure, and an open groove 410 is formed in the middle of the support base 41. The power mechanism 43 is mounted on the open groove 410. The power mechanism 43 includes a screw 431 and a nut 432. The screw 431 is rotatably mounted on the front and rear side walls of the open groove 410. The screw 431 and the first connecting rod 31 are perpendicular to each other in a plane. The nut 432 is connected to the screw 431 and is located in the open groove 410. The clamping member 42 is fixedly connected to the top surface of the nut 432. The clamping member 42 can also be integrally formed with the nut 432.

[0118] In order to enable the first connecting rod 31 to move in parallel, an adjustment device is respectively installed on the two supporting members 11 below the same first connecting rod 31 .

[0119] 11 and 13 , when the cloth cover becomes loose, the screw 431 is rotated to move the nut 432 along the screw. When the nut 432 moves, the clamping member 42 on its top surface is simultaneously driven to move, thereby clamping the first connecting rod 31 to move outward, thereby tightening the cloth cover 20 .

[0120] Referring to Figure 15 , to prevent the adjustment device from rotating and potentially causing the lateral adjustment rod to lose its stability, the support base 41 is further provided with a stop mechanism that restricts the rotation of the screw 431. This embodiment's stop mechanism includes a hanging rod 51 and a hanging rope 52. The hanging rod 51 is fixedly mounted on the outer side of the support base 41. This embodiment's stop mechanism is primarily suitable for use when the screw 431 is equipped with a flower nut. The hanging rope 52, preferably made of wire rope, is attached to the flower nut. After the screw 431 rotates into position, the hanging rope 52 is attached to the hanging rod 51.

[0121] Of course, the anti-retraction mechanism of the present invention is not limited to the above structure, and it can also adopt other anti-retraction mechanisms, such as: opening a threaded hole on the side wall of the nut and installing a screw, tightening the screw when the screw is adjusted into place to hold it against the screw.

[0122] Example 5

[0123] Referring to Figures 16 to 19 , the bed of this embodiment also includes a support frame 10, a fabric cover 20, a fabric cover connecting bracket 30, and a crossbar adjustment mechanism. The fabric cover connecting bracket 30 is connected to the top of the support frame 10. The fabric cover connecting bracket 30 includes two first connecting rods 31, which are arranged in parallel and spaced apart. The opposing edges (lengthwise) of the fabric cover 20 are respectively placed on the two first connecting rods 31 to form the bed surface.

[0124] 16 to 19 , the support frame 10 of this embodiment includes four support members 11 and two second connecting members 12. A support member 11 is installed below the two side ends of each first connecting rod 31. A second connecting member is fixed between the two support members 11 corresponding to the same side of the two first connecting rods 31. The second connecting member is located below the cloth cover.

[0125] Referring to Figures 16 to 19, the support member 11 of this embodiment adopts a vertical support plate, and a support member 11 is installed below the two side ends of each first connecting rod 31. The main difference between this embodiment and Example 4 is that a second connecting member 12 is fixed between the bottom side surfaces of the two support members 11 corresponding to the same side of the two first connecting rods 31. The second connecting member 12 adopts a horizontal connecting plate, and the bottom surface of the horizontal connecting plate is supported on the ground. Since the second connecting member 12 of this embodiment is supported on the ground, the contact area between the entire bed and the ground is larger, and the overall support stability is better. Moreover, the support member 11 equipped with the adjustment device can be directly replaced by the support base 41. Of course, it can also be formed as one piece with the support base.

[0126] Referring to Figures 17, 19, and 20, at least one of the support members 11 of the aforementioned bed is also equipped with an adjustment device to clamp the first connecting rod 31 outward to tighten the cover. The adjustment device of this embodiment includes a support base 41, a clamping member 42, and a power mechanism that drives the clamping member. The clamping member 42 is connected to the first connecting rod 31, and the support base 41 is mounted on the support member 11. The power mechanism is mounted on the support base 41, and includes a screw 431 and a nut 432. Another difference between this embodiment and the fourth embodiment lies in the different structures of the support base and clamping member of the adjustment device. The support base 41 of this embodiment is a hollow rectangular box structure with a notched groove 411 on its upper side. A screw 431 is mounted on the lower portion of the rectangular box, and a nut 432 is mounted on the screw 431 and located within the rectangular box. The clamping member 42 is fixed to the nut 432. The end of the first connecting rod 31 enters the notch groove 411 and is sleeved on the clamping member 42. The clamping member 42 of this embodiment is a semicircular sleeve.

[0127] To prevent the adjustment device from rotating and causing the lateral adjustment rod to lose its stability, the support base is further provided with a stop mechanism to limit the rotation of the screw. The stop mechanism can be the stop mechanism of the fourth embodiment, or a threaded hole can be directly provided on the lower side of the support base, and a screw can be installed in the threaded hole. When the screw is adjusted into place, the screw is tightened to hold it against the screw.

[0128] Example 6

[0129] Referring to Figure 21 , the main difference between this embodiment and Example 4 lies in the structure of the support member: the support member 11 of this embodiment is composed of an upper vertical support section 111 and a lower inclined support section 112 connected by a tee 113. An adjustment device is provided at the top of the vertical support section 111. The two ends of the second connecting member 12 are respectively connected to the inner side of the tee 113. The line connecting the inclined support section 112 and the two ends of the second connecting member 12 forms an obtuse angle.

[0130] Example 7

[0131] Referring to Figure 22 , the main difference between this embodiment and Example 5 lies in the structure of the support member: the support member of this embodiment is composed of an upper vertical support section 111 and a lower inclined support section 112 connected by a tee 113. An adjustment device is provided at the top of the vertical support section 111. The two ends of the second connecting member 12 are respectively connected to the inner side of the tee 113, and the line connecting the inclined support section 112 and the two ends of the second connecting member 12 forms an obtuse angle.

[0132] Example 8

[0133] Referring to Figure 23 , the primary difference between this embodiment and Example 6 lies in the structures of the support member and the second connecting member: The support member 11 of this embodiment is composed of an upper first inclined support section 114 and a lower second inclined support section 115 connected via a tee 113. An adjustment device is provided at the top of the first inclined support section 114. The two ends of the second connecting member 12 are respectively connected to the inner side of the tee 113. The first inclined support section 114 forms an acute angle with the plane of the cloth cover 20, while the second inclined support section 115 forms an obtuse angle with the line connecting the two ends of the second connecting member 12. The second connecting member 12 of this embodiment utilizes an upwardly protruding curved rod.

[0134] Example 9

[0135] Referring to Figure 24 , the primary difference between this embodiment and Example 7 lies in the structures of the support member and the second connecting member. The support member of this embodiment is composed of an upper first inclined support section and a lower second inclined support section connected via a tee. An adjustment device is provided at the top of the first inclined support section 114. The two ends of the second connecting member are connected to the inner side of the tee. The first inclined support section forms an acute angle with the plane of the fabric cover, while the second inclined support section forms an obtuse angle with the line connecting the two ends of the second connecting member. The second connecting member of this embodiment utilizes an upwardly protruding curved rod.

[0136] Since the lower part of the support member of the eighth and ninth embodiments adopts an inclined support section, and an upwardly protruding arc-shaped bent rod is used to connect the two support members, compared with the straight rod structure, it can provide better tension and make the structure of the support frame more stable.

[0137] Example 10

[0138] 25 to 27 , the anti-retraction mechanism of this embodiment includes a push switch 53. The support seat 41 is provided with a mounting hole 412 for mounting a screw. A mounting groove 4311 is provided at a portion of the head of the screw 431 that is off-center. The push switch 53 is rotatably mounted in the mounting groove 4311 via a rotating shaft.

[0139] 26 and 27 , a plurality of notches 413 are provided at intervals along the circumference of the mounting hole 412 of the support base 41 on one side of the support base 41 corresponding to the head of the screw 431. The push switch 53 is provided with a limiting protrusion 531 facing the inner side of the notch 413. A recess 4312 is also provided on the inner side of the mounting groove 4311 to provide space for the limiting protrusion 531 to exit the notch.

[0140] 26 and 27 , when the screw 431 is rotated into position, the push switch 53 is pressed by hand, causing the push switch 53 to rotate. The limiting protrusion 531 engages the notched groove 413 as the push switch 53 rotates. Under the limiting action of the notched groove 413, the limiting protrusion 531 cannot move or can only deviate within a small range within the notched groove 413. This prevents the screw 431 from rotating or allows it to rotate at a small angle, thus limiting its rotation. When the screw 431 needs to rotate, the push switch 53 is rotated, causing the limiting protrusion 531 to disengage from the notched groove 413 and move into the clearance groove 4312, allowing the screw 431 to rotate freely.

[0141] Example 11

[0142] 28 , a bed with an adjustable cover comprises a support frame 10, a cover 20, and a cover connecting bracket 30. In the following description, the horizontal direction mainly refers to the length direction parallel to the cover, while the vertical direction refers to the width direction parallel to the cover.

[0143] Referring to Figures 28 and 30 , the cloth cover connecting bracket 30 is connected to the top or upper middle portion of the support frame 10. In this embodiment, the cloth cover connecting bracket 30 includes two cloth cover connecting rods 32, which are arranged in a transversely parallel manner. The cloth cover 20 is respectively placed on both sides of the cloth cover connecting rods 32 to form the bed surface. The cloth cover 20 has a certain degree of tensile deformation capability, but its expansion and contraction rate is relatively small.

[0144] 28 to 31 , the support frame 10 includes at least two groups of support rods. The present embodiment specifically illustrates two groups of support rods, with one group of support rods connected to the ends of the two cloth cover connecting rods 32 on the same side. The end portion may be the end of the cloth cover connecting rod 32, or a portion close to the end portion (less than or equal to one-quarter of the entire length of the first connecting rod, in the direction extending from the end of the first connecting rod to the center). Of course, in other embodiments, the support rods may be three or more groups. When the support rods are three or more groups, each group of support rods is spaced apart along the length direction of the two cloth cover connecting rods 32.

[0145] 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 a support member 11, and the support member 11 is preferably a support rod. Specifically, a hinge ear 111 is fixedly sleeved on the bottom of each of the two support members 11, and a hinge seat 120 is sleeved on both ends of the second connecting rod 14, and the hinge ear 111 is connected to the hinge seat 120 through a pin. The top end of each support member 11 is detachably connected to the end of the first connecting rod through a T-shaped connecting sleeve. The two ends of the first connecting rod 13 are also hinged to the non-side end positions of the two support members 11. The hinge method of the first connecting rod 13 and the support member 11 is the same as the hinge method of the second connecting rod 14 and the support member 11 mentioned above.

[0146] The second connecting rod 14 and the first connecting rod 13 in the same group of supporting rods are parallel to each other, and the plane surrounded by the second connecting rod 14, the first connecting rod 13 and the two supporting members 11 is perpendicular to the plane where the two cloth sleeve connecting rods 32 are located.

[0147] In each of the above-mentioned sets of supporting rods, at least one of the first connecting rods 13 and the second connecting rod 14 is composed of two or more short tubes, with adjacent short tubes connected by an adjustment device. In the two sets of supporting rods shown in this embodiment, the second connecting rod 14 is composed of two short tubes 121, with an adjustment device connected between the two short tubes 121. The adjustment device is used to move one or both of the short tubes 121 connected thereto, thereby extending or shortening the corresponding rod.

[0148] Referring to Figure 29 , an internal thread segment 1211 is provided on the inner wall of each short tube 121, and the threads of the two short tubes 121 are in opposite directions. The adjusting device is a rotating rod 52, and the ends of the rotating rod 52 are provided with external thread segments 521 correspondingly connected to the two short tube 1 internal thread segments 1211. Referring to Figures 43 and 45 , when the cloth cover 20 becomes loose, the two rotating rods 52 are rotated simultaneously, causing the two short tubes 121 on each rotating rod 52 to move toward the center of the rotating rod 52 at the same time. Since the support member 11 is also hinged to the first connecting rod 13, the support member 11 rotates around the hinge position with the first connecting rod 13 as the axis, and the upper portion of the support member 11 moves outward, thereby pulling the cloth cover connecting rod 32 outward, making the cloth cover 20 tight.

[0149] To prevent the adjustment mechanism from rotating and causing the short tubes 121 to move toward each other, a stop mechanism is provided on the short rods 121 to limit the rotation of the rotating rod 52. Referring to Figure 32 , the stop mechanism is a bolt 61. Each short tube 121 has a threaded hole 1210 defined at one end near the rotating rod 52. A bolt 61 is connected to the threaded hole 1210, and the end of the bolt 61 is held against the externally threaded section 521 of the rotating rod 52.

[0150] Example 12

[0151] The main difference between this embodiment and the eleventh embodiment lies in the different adjustment devices. Referring to Figures 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 rod 121. The inner wall of the other short rod 121 is provided with an internal thread section 1211 that is connected to the external thread section of the rotating rod 52. In this embodiment, since the short rod 121 integrally formed with the rotating rod 52 needs to rotate with the rotating rod 52 during adjustment, the other end of the short rod 121 is away from the rotating rod 52, and it is best to adopt a movable connection method to be connected to the hinge seat to facilitate the rotation of the rotating rod 52 during adjustment. When the cloth cover is loose, the rotating rod 52 is manually rotated to reduce the distance between the short rod 121 connected to the rotating rod 52 and the other short rod 121, so as to pull the support member 11 to rotate around the end of the first connecting rod 13, so that the upper part of the support member 11 moves away from the central axis of the cloth cover, driving the cloth cover connecting rod 32 to move outward, thereby tightening the cloth cover 20.

[0152] In addition, to prevent the rotating rod from rotating back when it is in place, a backstop mechanism can be provided on the outer wall of the short rod 121 with the internal thread section 1211, and specifically, the same threaded hole and bolt matching method as in Example 11 can be adopted.

[0153] Example 13

[0154] Referring to FIG35 , a bed with an adjustable cover includes a support frame 10, a cover 20, and a cover connecting bracket 30. The cover connecting bracket 30 includes two cover connecting rods 32, which are arranged in parallel with each other. The cover 20 is respectively mounted on the two cover connecting rods 32 on both sides of the cover to form the bed surface.

[0155] Referring to Figure 35 , the support frame 10 includes two sets of support rods, one of which is connected to the same end of the two cloth cover connecting rods 32. Each set of support rods includes two support members 11, a second connecting rod 14, and a first connecting rod 13. The second connecting rod 14 is hinged to a support member 11 at each end, and the top end of each support member 11 is detachably connected to the end of the cloth cover connecting rod 32 via a T-shaped connector. The first connecting rod 13 is also hinged to the ends of the two support members 11 at locations other than the ends.

[0156] 35 or 37 , in the two sets of support rods shown in this embodiment, the second connecting rod 14 is composed of two short tubes 121, and an adjustment device is connected between the two short tubes 121. The main difference between this embodiment and the eleventh embodiment is the different structure of the adjustment device.

[0157] The adjustment device of this embodiment is a linear ratchet mechanism, as shown in Figures 35 to 39 . It includes a mounting base 71, a handle 72, a movable sleeve 73, a first pawl 74, and a second pawl 75. One end of the mounting base 71 is fixed to the end of one short tube 321, while the end of the other short tube 321 is fixedly sleeved within the movable sleeve 73. A rectangular slot 711 is defined on the top surface of the mounting base 71, and a plurality of ratchet teeth 731 are disposed on the top surface of the movable sleeve 73. The movable sleeve 73 is inserted into the mounting base 71, and the ratchet teeth 731 are positioned within the rectangular slots 413. The handle 72 is rotatably connected to the mounting base 71 via a rotating shaft 721. A first pawl 74 and a second pawl 75 are hingedly connected to the front and rear sides of the handle 72, centered around the rotating shaft 721. The second pawl 75 is longer than the first pawl 74. The first pawl 74 moves along the ratchet teeth 731 as the handle 72 swings, while the second pawl acts as a stop.

[0158] When the lever 72 is in the unlocked position, the first pawl 74 will be released and the second pawl 75 will be in the unlocked position, so the lever 72 will be in the unlocked position when the lever 72 is unlocked. When the handle 72 rotates to be parallel to the top surface of the mounting base 71 , the bottom of the rotating end of the first pawl 74 sinks into the gap between the two ratchet teeth 731 , and the free end of the second pawl 75 also escapes from the ratchet teeth 731 and rotates to the top surface of the handle 72 .

[0159] When the cloth cover 20 becomes loose, the handle 72 can be pressed to cause the linear ratchet mechanism to push the movable sleeve 73 to move, and the movable sleeve 73 drives the short rod 1 to move in the direction of approaching the other short rod 1. Since the support member is also hinged to the connecting rod, the support member rotates around the hinge position with the connecting rod as the axis, and the upper part of the support member moves outward, thereby pulling the first connecting rod outward to tighten the cloth cover.

[0160] Referring to Figure 37, a handle locking mechanism is also installed on the mounting seat 71, and the handle locking mechanism includes 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 flat 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.

[0161] Example 14

[0162] Referring to FIG40 , a bed with an adjustable cover includes a support frame 10, a cover 20, and a cover connecting bracket 30. The cover connecting bracket 30 includes two cover connecting rods 32, which are arranged in parallel with each other. The cover 20 is respectively mounted on the two cover connecting rods 32 on both sides of the cover to form the bed surface.

[0163] Referring to Figure 40 or Figure 42, the support frame 10 includes two groups of support rods, and one group of the 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 a support member 11, and the two ends of the second connecting rod 14 are respectively sleeved with a hinge seat 120, and the hinge ear 111 is connected to the hinge seat 120 through a pin. 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-side end positions of the two support members 11, and its hinge method is the same as the hinge method of the second connecting rod 14.

[0164] The main difference between this embodiment and the eleventh embodiment is that: referring to Figures 40 and 41, in the two groups of support rods in this embodiment, the first connecting rod 13 is composed of two short tubes 131, and an adjustment device is connected between the two short tubes 131.

[0165] Referring to Figures 41 and 43, each short tube 131 has an internal thread segment 1311 on its inner wall, and the threads of the two short tubes 131 are in opposite directions. The adjustment device is a rotating rod 52, with externally threaded segments 521 at each end correspondingly connected to the internal thread segments of the two short tubes 1. When the cloth cover 20 becomes loose, the two rotating rods 52 are rotated simultaneously, causing the two short tubes 131 on each rotating rod to move simultaneously away from the middle of the rotating rod. Since the bottom of the support member 11 is hinged to the second connecting rod 14, the support member 11 can rotate outward with the bottom axis, thereby pulling the cloth cover connecting rod 32 outward, tightening the cloth cover.

[0166] In order to prevent the adjustment device from rotating and causing the short tube 2 131 to move toward each other, the short rod 2 131 is also provided with a stop mechanism for limiting the rotation of the rotating rod 52. The stop mechanism is the same as that in the eleventh embodiment and will not be described in detail in this embodiment.

[0167] Example 15

[0168] The main difference between this embodiment and embodiment 14 is that the adjustment device is different. Referring to Figures 44 and 45, the adjustment device of this embodiment is also a rotating rod 52, which is integrally formed with one of the short rods 131. Of course, the rotating rod 52 can also be fixedly connected to the short rod 131. The inner wall of the other short rod 131 is provided with an internal thread section 1311 corresponding to the external thread section of the rotating rod 52. In this embodiment, since the short rod 131 integrally formed with the rotating rod 52 needs to rotate with the rotating rod 52 during adjustment, the other end of the short rod 131 is away from the rotating rod 52, and it is best to adopt a movable connection method to be connected to the hinge seat to facilitate the rotation of the rotating rod 52 during adjustment. When the cloth cover is loose, the rotating rod 52 is manually rotated to increase the distance between the short rod 2 131 connected to the rotating rod 52 and the other short rod 2 131, so as to push the support member 11 to swing around the end of the second connecting rod 12, so that the upper part of the support member 11 moves away from the central axis of the cloth cover, thereby pushing the cloth cover connecting rod 32 to move outward, thereby tightening the cloth cover 20.

[0169] In addition, to prevent the rotating rod from rotating back when it is in place, a backstop mechanism can be provided on the outer wall of the second short rod where the internal thread section 1311 is provided. Specifically, the same threaded hole and bolt matching method as in Example 11 can be adopted.

[0170] Example 16

[0171] Referring to FIG46 , a bed with an adjustable cover includes a support frame 10, a cover 20, and a cover connecting bracket 30. The cover connecting bracket 30 includes two cover connecting rods 32, which are arranged in parallel with each other. The cover 20 is respectively mounted on the two cover connecting rods 32 on both sides of the cover to form the bed surface.

[0172] Referring to Figures 46 and 47 , the support frame 10 includes two sets of support rods, one of which is connected to the same end of the two cloth cover connecting rods 32. Each set of support rods includes two support members 11, a second connecting rod 14, and a first connecting rod 13. The second connecting rod 14 is hinged to a support member 11 at each end, and the top end of each support member 11 is detachably connected to the end of the cloth cover connecting rod 32 via a T-shaped connecting sleeve. The first connecting rod 13 is also hinged to the ends of the two support members 11 at locations other than the ends.

[0173] 46 or 47, in the two sets of support rods of this embodiment, the first connecting rod 13 is composed of two short tubes 131, and an adjustment device is connected between the two short tubes 131. The main difference between this embodiment and the eleventh embodiment is the different structure of the adjustment device.

[0174] The adjustment device used in this embodiment is the linear ratchet mechanism in the thirteenth embodiment, which will not be described in detail here.

[0175] When the length of the first connecting rod 31 or the cloth cover connecting rod 32 is relatively long, in order to facilitate transportation, each first connecting rod 31 or cloth cover connecting rod 32 in the above embodiments can also be formed by detachably connecting multiple connecting rod sections.

[0176] The bed described above may be any one of a folding bed, a camp bed, a pet bed or a pet camp bed.

[0177] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An improved bed, comprising a support frame, a cloth cover and a cloth cover connecting bracket, wherein the cloth cover connecting bracket is connected to the top or upper middle part of the support frame, the cloth cover connecting bracket comprises two first connecting rods, and two opposite edges of the cloth cover are respectively connected to the first connecting rods to form a bed surface, characterized in that: The support frame includes at least two groups of support rods spaced apart at the bottom of the first connecting rod, each group of support rods includes 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, the top end of each support rod is connected to the first connecting rod, at least one of the support members is inclined and forms a non-right angle with the bed surface, and an adjustment device is provided on the support member to make the support member extend or shorten along its axial direction, so as to drive the distance between its corresponding first connecting rod and another first connecting rod to change.

2. An improved bed as claimed in claim 1, characterized in that: The two support members under the same first connecting rod are both inclined and form the same non-right angle with the bed surface. The two support members are each provided with an adjustment device.

3. An improved bed as claimed in claim 1, characterized in that: The four support members are all arranged tilted, and the two support members under the same first connecting rod form the same non-right angle with the bed surface, and the two support members under different first connecting rods are tilted in opposite directions; each support member is provided with an adjustment device.

4. An improved bed as claimed in claim 3, characterized in that: The planes where the two supporting members corresponding to the lower sides of the same ends of the two first connecting rods are located are perpendicular to the bed surface, and each supporting member forms an acute angle with the bed surface.

5. An improved bed as described in any one of claims 2 to 4, characterized in that: The adjusting device includes a threaded sleeve, a movable rod, and a connecting sleeve. The connecting sleeve is connected to the first connecting rod. A connecting hole is opened at the top of the support member. An external thread is provided on the upper outer wall of the support member. 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 of the movable rod is correspondingly inserted into the connecting hole. A flange abutting against the top surface of the threaded sleeve is also provided on the outer wall of the upper end. The top surface of the flange is fixedly connected to the connecting sleeve.

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

7. An improved bed as claimed in claim 5, characterized in that: The connecting sleeve is a circular sleeve or a semicircular jacket.

8. An improved bed as claimed in claim 5, characterized in that: The support member is also provided with a stop mechanism for limiting the rotation of the threaded sleeve.

9. An improved bed as claimed in claim 8, characterized in that: The anti-retraction mechanism includes a bolt. A threaded hole is provided on the screw sleeve. The bolt is connected to the threaded hole, and the end of the bolt is supported on the first external thread.

10. An improved bed as claimed in claim 1, characterized in that: Each of the support members is formed by an upper first inclined support section and a lower second inclined support section connected by a connecting member, and the two ends of the second connecting rod are respectively connected to the inner side of the connecting member, and the adjusting device is installed on the first inclined support section. The connecting line between the two ends of the second connecting rod forms an obtuse angle structure with each of the second inclined support sections.

11. An improved bed as claimed in claim 1, characterized in that: The second connecting rod is a straight rod or an arc-shaped curved rod protruding upward.

12. An improved bed as claimed in claim 1, characterized in that: The bed is any one of a folding bed, a camp bed, a pet bed or a pet camp bed.

13. An improved bed, comprising a support frame, a cloth cover and a cloth cover connecting bracket, wherein the cloth cover connecting bracket is connected to the top or upper middle part of the support frame, the cloth cover connecting bracket comprises two first connecting rods, and two opposite edges of the cloth cover are respectively connected to the first connecting rods to form a bed surface, characterized in that: At least one adjusting device is fixedly provided on the support frame for clamping the first connecting rod for movement, and the adjusting device includes a clamping member and a power mechanism for driving the clamping member to move. The clamping member is connected to the first connecting rod, and the movement of the clamping member is driven by the power mechanism to drive the corresponding first connecting rod to move, so that the distance between the two first connecting rods changes.

14. An improved bed as claimed in claim 13, characterized in that: The support frame includes at least two groups of support rods spaced apart at the bottom of the first connecting rod, each group of support rods includes 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 end of each support rod is connected to the first connecting rod.

15. An improved bed as claimed in claim 14, characterized in that: A support base is installed on at least one of the support members, and the support base is provided with the power mechanism, which includes a screw and a nut. The screw is rotatably installed on the support base, and the screw and the first connecting rod are perpendicular to each other in a plane. The nut is connected to the screw, and the clamping member is fixedly connected to the top surface of the nut.

16. An improved bed as claimed in claim 15, characterized in that: One supporting seat is respectively installed on two supporting members under the same first connecting rod.

17. An improved bed as claimed in claim 15 or 16, characterized in that: The clamping piece is a circular sleeve or a semicircular jacket.

18. An improved bed as claimed in claim 17, characterized in that: The jacket and the nut are integrally formed.

19. An improved bed as claimed in claim 15 or 16, characterized in that: The support seat is also provided with a stop mechanism for limiting the rotation of the screw rod.

20. An improved bed as claimed in claim 19, characterized in that: The anti-retraction mechanism includes a hanging rod and a hanging rope. The hanging rod is fixedly installed on the outer side of the support seat, and the hanging rope is arranged on the nut of the screw rod. After the screw rod is rotated into place, the hanging rope is hung on the hanging rod.

21. An improved bed as claimed in claim 19, characterized in that: The anti-retraction mechanism includes a push switch, a mounting through hole for installing the screw is provided on the support seat, a mounting groove is provided at a portion of the screw head that is off-center, the push switch is rotatably installed in the mounting groove through a rotating shaft, a plurality of notch grooves are provided along the circumferential surface of the mounting through hole on one side of the support seat corresponding to the screw head, a limiting protrusion matching the notch groove is provided on the inner side of the notch groove facing the inner side of the notch groove, and a yield groove is also provided on the inner side of the mounting groove to provide space for the limiting protrusion to exit the notch groove, when the limiting protrusion is stuck in the notch groove, the rotation of the screw can be restricted, and when the limiting protrusion exits the notch groove, the screw can rotate freely.

22. An improved bed as claimed in claim 13, characterized in that: The support member is a vertical support member perpendicular to the cloth cover, and the two ends of the second connecting member are respectively connected to the lower middle part or the bottom of the vertical support member.

23. An improved bed as claimed in claim 13, characterized in that: The support member is formed by an upper vertical support section and a lower inclined support section connected by a connecting member, and the two ends of the second connecting member are respectively connected to the inner side of the connecting member, and the connecting line between the inclined support section and the two ends of the second connecting member forms an obtuse angle structure.

24. An improved bed as claimed in claim 13, characterized in that: The support member is formed by a first inclined support section at the top and a second inclined support section at the bottom connected by a connecting member, and the two ends of the second connecting member are respectively connected to the inner side of the connecting member, 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.

25. An improved bed as claimed in claim 13, characterized in that: The bed is any one of a folding bed, a camp bed, a pet bed or a pet camp bed.

26. An improved bed, comprising a support frame, a cloth cover and a cloth cover connecting bracket, wherein the cloth cover connecting bracket is connected to the top or upper middle part of the support frame, the cloth cover connecting bracket comprises two cloth cover connecting rods, two opposite edges of the cloth cover are respectively connected to the cloth cover connecting rods to form a bed surface, the support frame comprises at least two groups of support rods spaced below the cloth cover connecting rods, characterized in that: Each group of support rods includes two support members and two connecting rods. Each of the cloth sleeve connecting rods is connected to one of the support members. The two connecting rods are hinged between the two support members. At least one of the connecting rods is provided with an adjustment device. The adjustment device drives the support members at both ends to rotate around the hinge point of the other connecting rod as the axis, so that the distance between the two corresponding cloth sleeve connecting rods on the two support members changes.

27. An improved bed as claimed in claim 26, characterized in that: The two connecting rods include a first connecting rod and a second connecting rod, the two ends of the second connecting rod are respectively hinged to one of the supporting members, and the two ends of the first connecting rod are respectively hinged to non-side end positions of the two supporting members. At least one connecting rod is composed of two or more short tubes, and two adjacent short tubes are connected by an adjustment device.

28. An improved bed as claimed in claim 27, characterized in that: The first connecting rod and the second connecting rod in the same group of supporting rods are parallel to each other, and the plane surrounded by the first connecting rod, the second connecting rod and the two supporting members is perpendicular to the plane where the two cloth sleeve connecting rods are located.

29. An improved bed as claimed in claim 27, characterized in that: In the two groups of supporting rods, each first connecting rod is composed of two or more short tubes, and two adjacent short tubes are connected by an adjusting device.

30. An improved bed as claimed in claim 27, characterized in that: In the two groups of supporting rods, each second connecting rod is composed of two or more short tubes, and two adjacent short tubes are connected by an adjusting device.

31. An improved bed as claimed in claim 27, characterized in that: An inner thread segment is provided on the inner wall of each short tube, and the thread directions of two adjacent short tubes are opposite; the adjusting device is a rotating rod, and both ends of the rotating rod are provided with external thread segments corresponding to the inner thread segments of two adjacent short tubes.

32. An improved bed as claimed in claim 27, characterized in that: A stop mechanism for limiting the rotation of the adjusting device is also provided on the outer wall of the short tube.

33. An improved bed as claimed in claim 32, characterized in that: The stop mechanism is a bolt. A threaded hole is formed at one end of each short tube close to the rotating rod. A bolt is connected to the threaded hole. The end of the bolt is supported on the external thread section of the rotating rod.

34. An improved bed as claimed in claim 27, characterized in that: The adjusting device is a rotating rod with an external thread section, which is fixedly connected to or integrally formed with one of the short rods, and an internal thread section corresponding to the external thread section of the rotating rod is provided on the inner wall of the other short rod.

35. An improved bed as claimed in claim 34, characterized in that: The outer wall of the short rod with the internal thread section is also provided with a stop mechanism for limiting the rotation of the rotating rod.

36. An improved bed as claimed in claim 27, characterized in that: The adjusting device includes a mounting seat, a handle, a movable sleeve, a first pawl and a second pawl. One end of the mounting seat is fixed to the end of one of the short tubes, and the end of the other short tube is fixedly sleeved in the movable sleeve. The top surface of the movable sleeve is provided with a plurality of ratchets, and a rectangular groove is opened on the top surface of the mounting seat. The movable sleeve is inserted into the mounting seat, and the ratchets are correspondingly located in the rectangular groove. The handle is rotatably connected to the mounting seat through a rotating shaft. The front and rear sides of the handle with the rotating shaft as the center are respectively hinged with the first pawl and the second pawl. The length of the second pawl is greater than that of the first pawl. The first pawl progresses along the ratchet as the handle swings, and the second pawl forms a stop.

37. An improved bed as claimed in claim 36, characterized in that: A handle locking mechanism is also installed on the mounting seat, and the handle locking mechanism includes a hanging rod and a locking buckle. The hanging rod is fixed on the side wall of the handle, and the locking buckle is installed on the side wall of the mounting seat. When the handle is placed flat on the top surface of the mounting seat, the locking buckle is hung on the hanging rod.

38. An improved bed as claimed in claim 26, characterized in that: The bed is any one of a folding bed, a camp bed, a pet bed or a pet camp bed.

Images