Bed

Abstract

The present invention relates to a bed comprising a support frame (10), a fabric cover (20), and a fabric cover connecting frame (30), wherein the fabric cover connecting frame (30) is connected to the top or upper middle part of the support frame (10), and the fabric cover connecting frame (30) has a square frame formed by two first connecting rods (31) and two second connecting rods (32) connected successively, and at least one first connecting rod (32) is provided with a connecting element on which an adjusting device is arranged that drives the second connecting rod (32) to move. The distance between the two first connecting rods (31) can be increased or decreased by means of the adjusting device. This bed adds an adjusting device with which the fabric cover (20) can be slipped over the fabric connecting frame (30) in a relaxed state.Finally, the fabric cover (20) is tightened by the adjusting device, which significantly reduces the assembly difficulty of the fabric cover (20); furthermore, if the fabric cover (20) slackens, the adjusting device can drive the second connecting rod (32) to move. This increases the distance between the two first connecting rods (31), thereby again tightening the fabric cover (20).

Description

Technical field

[0001] The present invention relates to the technical field of household appliances, in particular a bed. State of the art

[0002] A bed serves as a comfortable resting place for people or pets, especially under harsh outdoor conditions. Currently, a common pet bed (e.g.,(Chinese utility model with publication number CN215422216U) an easily cleaned and replaceable aluminium pet bed, comprising a support frame wherein a non-slip mat is arranged on the outside of the underside of the support frame; a connecting device firmly attached to the outside of the top of the support frame, wherein a bed surface is arranged on the inside of the connecting device, wherein a longitudinal connecting rod is attached to the inner surface of the connecting device, and a transverse connecting rod is arranged on the side of the connecting device perpendicular to the longitudinal connecting rod, wherein a clamping base is arranged on the side of the transverse connecting rod that is near the bed surface.

[0003] To ensure good support, low-stretch fabric (e.g., Oxford cloth) is typically used for the bed surface. However, these pet beds have the disadvantage that, during assembly, the first three connecting rods (two transverse rods and one longitudinal rod, or one transverse rod and two longitudinal rods) are already positioned, while the last longitudinal (or transverse) connecting rod can only be moved into its exact position with considerable force due to the constraints of the fabric cover, leading to assembly difficulties.Furthermore, long-term stress from the weight of pets (especially heavy pets) causes irreversible stretching deformation of the fabric cover (especially in the width direction), leading to a sagging of the bed surface and a reduction in the support performance of the bed surface.

[0004] If no measures are taken to tighten the bed surface, it will no longer provide stable support for people or pets, preventing them from resting peacefully. Furthermore, this sagging will worsen over time, causing the bed surface to collapse and significantly shortening its lifespan. In this case, the bed surface must be replaced, which is not only inconvenient but also expensive. For some pet beds, where the surface cannot be disassembled and replaced, the entire bed must be taken out of service.

[0005] The invention with publication number CN 102106265A, however, is a play and exercise enclosure for cats invented by the applicant, comprising a support frame and an outer cover placed over the support frame, wherein the support frame includes at least three parallel support poles, two fixing frames each connected to the two ends of the support poles, and several support plates arranged between the two fixing frames and connected to the support poles, with at least one of the support plates having a through-hole. A height-adjustable adjustment device is arranged on the support pole located below the upper fixing frame.The adjustment device comprises a connecting section that is attached to the support rod and provided with threads on its outer surface, and a nut that engages with the threads on the surface of the connecting section and serves for height adjustment, the upper side of the nut being connected to the upper fixing frame via a further support rod. Although the above-mentioned invention discloses the adjustment device, it is used in a play and exercise enclosure for cats. Its function is to adjust the height of the support rods to facilitate slipping the outer cover over the support frame and thus securing the outer cover more firmly to the support frame. Therefore, it differs from the present invention in both application and purpose. Content of the invention

[0006] The object of the present invention is to provide a bed to overcome the disadvantages of the existing bed, such as difficult assembly, reduced support performance when the bed surface deteriorates, difficulties for people or pets to rest in peace and tranquility, and a significant reduction in service life.

[0007] The present invention uses the following technical solutions for this purpose:

[0008] Bed comprising a support frame, a fabric cover and a fabric cover connecting stand, wherein the fabric cover connecting stand is connected to the top or upper middle part of the support frame, the fabric cover connecting stand having a square frame formed by two first connecting rods and two second connecting rods connected successively, and wherein the edges of the four side surfaces of the fabric cover are each connected to the first connecting rods and the second connecting rods to form a bed surface, wherein a connecting element is arranged on at least one of the second connecting rods, on which an adjusting device for driving the movement of the second connecting rod is provided, wherein the distance between the two first connecting rods is increased or decreased by the adjusting device.

[0009] The first two connecting rods and the second two connecting rods are joined one after the other to form a rectangular frame, with a first connecting bushing attached to each end of each second connecting rod, and with the two ends of each first connecting rod being connected appropriately to the side face of the first connecting bushing.

[0010] One of the adjusting devices is arranged at one of the first connecting bushings of each first connecting rod.

[0011] The adjusting device is a rotating screw with an external thread, and the inner wall of the first connecting bushing is provided with an internal thread, wherein the rotating screw is screwed into the internal thread from the outside of the first connecting bushing, and wherein one end of the rotating screw is either firmly connected to or in contact with one end of the second connecting rod.

[0012] The rotating screw comprises a screw body with a hollow interior and a head firmly connected to the screw body, and the end of the second connecting rod extends into the hollow interior and rests against the inner wall of the connection point between the head and the screw body.

[0013] Furthermore, a recoil-stop device is provided at the first connecting socket, which limits the rotation of the adjusting device.

[0014] The recoil-stopping device comprises a hinged cover, a pushrod and a movable block, wherein the hinged cover is hinged to the head of the rotating screw in a way that allows it to be flipped up and down, wherein a pushrod is provided on the underside of the hinged cover, and a movable block is arranged on the front of the connection point between the screw body and the head of the rotating screw, and wherein several projections are provided on a through-bore of the first connecting bushing that interacts with the rotating screw.

[0015] The adjusting device is a linear ratchet mechanism comprising a mounting base, a handle, a movable sleeve, a first pawl, and a second pawl. The top of the first connecting sleeve is provided with a rectangular groove forming the mounting base. The end of the second connecting rod is inserted into the movable sleeve. The top of the movable sleeve is provided with several ratchet teeth. The movable sleeve is inserted into the mounting base, the ratchet teeth being arranged accordingly in the rectangular groove. The handle is rotatably connected to the mounting base via a pivot axis. The first pawl and the second pawl are hinged to the front and rear sides of the handle, respectively, around the pivot axis. The second pawl is longer than the first pawl, and the first pawl advances along the ratchet teeth as the handle pivots.and the second latch forms a recoil barrier.

[0016] The mounting base is further equipped with a handle locking mechanism comprising a hook bar and a locking hook, wherein the hook bar is attached to the side wall of the handle, the locking hook is attached to the side wall of the mounting base, and wherein the locking hook is engaged on the hook bar when the handle is lying flat on the top of the mounting base.

[0017] A second connecting bushing is attached to the side surface of the first connecting bushing, the first connecting rod being fixedly arranged in the second connecting bushing, a third connecting bushing being further attached to the underside of the first connecting bushing, and the support frame comprising four support legs, the upper end part of each support leg being inserted into the third connecting bushing, and the first connecting bushing, the second connecting bushing and the third connecting bushing being perpendicular to each other in three-dimensional space.

[0018] Furthermore, the present invention uses the following technical solutions:

[0019] A bed comprising a support frame, a fabric cover, and a fabric cover connecting stand, wherein the fabric cover connecting stand is connected to the top or upper middle part of the support frame, the fabric cover connecting stand having a square frame formed by two first connecting bars and two second connecting bars connected successively, and wherein the edges of the four side faces of the fabric cover are each connected to the first connecting bars and the second connecting bars to form a bed surface, wherein at least one of the second connecting bars consists of two or more short tubes, wherein at least two adjacent short tubes are connected via an adjusting device, the corresponding short tubes being driven by the adjusting device to relative movement in order to increase or decrease the distance between the two first connecting bars.

[0020] Both second connecting rods each consist of two short tubes, wherein the ends facing each other of the two short tubes of each second connecting rod are connected via the adjusting device, and wherein the other end facing away from each other is firmly connected to the first connecting rod via a connecting tube piece.

[0021] An internal threaded section is provided on the inner wall of each short tube, and the thread directions are opposite between two adjacent short tubes, and the adjusting device is a rotary rod, with external threaded sections provided at each of the two ends of the rotary rod, which are screwed correspondingly into the internal threaded sections of the two adjacent short tubes.

[0022] The adjusting device is a rotary rod with an external threaded section, wherein the rotary rod is either rigidly connected to one of the short tubes or formed integrally with it, wherein an internal threaded section is provided on the inner wall of the other short tube, which is connected correspondingly to the external threaded section of the rotary rod.

[0023] Furthermore, a recoil-stopping device is provided on the outer wall of the short tube, which limits the rotation of the adjusting device.

[0024] The adjusting device comprises a mounting base, a handle, a movable sleeve, a first pawl, and a second pawl, wherein one end of the mounting base is attached to the end of one of the short tubes, one end of the other short tube is firmly inserted into the movable sleeve, the upper surface of the movable sleeve being provided with several ratchet teeth, and wherein a rectangular groove is formed in the upper surface of the mounting base, and wherein the movable sleeve is inserted into the mounting base, the ratchet teeth being arranged accordingly in the rectangular groove, and wherein the handle is rotatably connected to the mounting base via a pivot axis, and the first pawl and the second pawl are each hinged to the front and rear sides of the handle located around the pivot axis, the length of the second pawl being greater than that of the first pawl, and the first pawl advancing along the ratchet teeth as the handle pivots.and the second latch forms a recoil barrier.

[0025] The mounting base is further equipped with a handle locking mechanism comprising a hook bar and a locking hook, wherein the hook bar is attached to the side wall of the handle, the locking hook is attached to the side wall of the mounting base, and wherein the locking hook is engaged on the hook bar when the handle is lying flat on the top of the mounting base.

[0026] Furthermore, the present invention uses the following technical solutions:

[0027] A bed comprising a support frame, a fabric cover, and a fabric cover connecting frame, wherein the fabric cover connecting frame is connected to the top or upper middle part of the support frame, the fabric cover connecting frame comprises two first connecting bars, and the fabric cover is attached to the two first connecting bars to form a bed surface, wherein the support frame comprises at least two groups of support bar elements spaced apart from each other on the underside of the first connecting bars, each support bar element comprising two support bars and a second connecting bar, the lower ends of the two support bars being connected to the two ends of the second connecting bar, the upper end of each support bar being firmly connected to the first connecting bar, and at least one of the second connecting bars being composed of two or more short tubes.and wherein at least two adjacent short tubes are connected via an adjusting device, and the corresponding short tubes are driven by the adjusting device to cause the support rods to move relative to each other, so that the distance between the first two connecting rods is increased or decreased.

[0028] The two support rods are symmetrically connected to the two ends of the second connecting rod, and the plane formed by the two support rods and the second connecting rod is perpendicular to the plane in which the two first connecting rods are located.

[0029] Both second connecting rods each consist of two short tubes, wherein the ends facing each other of the two short tubes of each second connecting rod are connected via the adjusting device, and wherein the other end facing away from each other is firmly connected to the support rod via a connecting tube piece.

[0030] An internal threaded section is provided on the inner wall of each short tube, and the thread directions are opposite between two adjacent short tubes, and the adjusting device is a rotary rod, with external threaded sections provided at each of the two ends of the rotary rod, which are screwed correspondingly into the internal threaded sections of the two adjacent short tubes.

[0031] The adjusting device is a rotary rod with an external threaded section, wherein the rotary rod is either rigidly connected to one of the short tubes or formed integrally with it, and wherein an internal threaded section is provided on the inner wall of the other short tube, which is connected correspondingly to the external threaded section of the rotary rod.

[0032] Furthermore, a recoil-stopping device is provided on the outer wall of the short tube, which limits the rotation of the adjusting device.

[0033] The adjusting device comprises a mounting base, a handle, a movable sleeve, a first pawl, and a second pawl, wherein one end of the mounting base is attached to the end of one of the short tubes, one end of the other short tube is firmly inserted into the movable sleeve, the top of the movable sleeve being provided with several ratchet teeth, and a rectangular groove being formed in the top of the mounting base, wherein the movable sleeve is inserted into the mounting base, the ratchet teeth being arranged accordingly in the rectangular groove, and wherein the handle is rotatably connected to the mounting base via a pivot axis, and the first pawl and the second pawl are each hinged to the front and rear sides of the handle located around the pivot axis, the length of the second pawl being greater than that of the first pawl, and the first pawl advancing along the ratchet teeth as the handle pivots.and the second latch forms a recoil barrier.

[0034] The mounting base is further equipped with a handle locking mechanism comprising a hook bar and a locking hook, wherein the hook bar is attached to the side wall of the handle, the locking hook is attached to the side wall of the mounting base, and wherein the locking hook is engaged on the hook bar when the handle is lying flat on the top of the mounting base.

[0035] The bed of the present invention can be designed as a folding bed, camp bed, pet bed or camp bed for pets.

[0036] From the above description of the structure of the present invention, it is evident that the present invention has the following advantages compared to the prior art:

[0037] The invention adds an adjustment device that allows the fabric cover to be slipped over the fabric connecting frame in a relaxed state. The adjustment device then tightens the fabric cover, significantly reducing the difficulty of assembly. Furthermore, if the fabric cover slackens, the adjustment device can drive the second connecting rod (or short tube) to move. This increases the distance between the two first connecting rods, again tightening the fabric cover and maintaining its stable support. Simultaneously, the rate of deterioration of the fabric cover is slowed, extending the bed's lifespan. Details of the drawings Fig. Figure 1 shows a schematic representation of the structure of the fabric covering in the relaxed state according to embodiment 1. Fig. 2 shows a sectional view of Fig. 1. Fig. Figure 3 shows a schematic representation of the structure of the fabric covering in the stretched state according to embodiment 1. Fig. 4 shows a sectional view of Fig. 3. Fig. Figure 5 shows a schematic representation of the recoil-stopping device according to embodiment 1. Fig. Figure 6 shows a sectional view of Fig. 5. Fig. Figure 7 shows a sectional view of the in Fig. 6. Hinged lid shown in the upward-opening position. Fig. Figure 8 shows a schematic representation of the recoil-stopping device according to embodiment 2. Fig. Figure 9 shows a schematic representation of the recoil-stopping device according to embodiment 3. Fig. Figure 10 shows a schematic representation of the recoil locking device in the open state according to embodiment 4. Fig. Figure 11 shows a schematic representation of the recoil locking device in the locked state according to embodiment 4. Fig. Figure 12 shows an exploded view of the recoil-stopping device according to embodiment 5. Fig. Figure 13 shows a sectional view of Fig. 12. Fig. Figure 14 shows a sectional view of the recoil locking device in the locked state according to embodiment 5. Fig. Figure 15 shows a schematic representation of the structure of the fabric covering in the relaxed state according to embodiment 6. Fig. Figure 16 shows a schematic representation of the structure of the fabric covering in the stretched state according to embodiment 6. Fig. Figure 17 shows a schematic representation of the linear ratchet mechanism according to embodiment 6. Fig. Figure 18 shows a sectional view of the linear ratchet mechanism in the released state according to embodiment 6. Fig. Figure 19 shows a sectional view of the linear ratchet drive in the feed state according to embodiment 6. Fig. Figure 20 shows a sectional view of the linear ratchet mechanism in the retracted state according to embodiment 6. Fig. Figure 21 shows a sectional view of the linear ratchet mechanism in the locked state according to embodiment 6. Fig. Figure 22 shows a schematic representation of the structure of the fabric covering in the relaxed state according to embodiment 7. Fig. 23 shows a sectional view of Fig. 22. Fig. Figure 24 shows a schematic representation of the structure of the fabric covering in the stretched state according to embodiment 7. Fig. 25 shows a sectional view of Fig. 24. Fig. Figure 26 shows a sectional view of the fabric cover in the relaxed state according to embodiment 8. Fig. Figure 27 shows a sectional view of the structure of the fabric cover in the stretched state according to embodiment 8. Fig. Figure 28 shows a schematic representation of the structure of the fabric covering in the relaxed state according to embodiment 9. Fig. 29 a sectional view of the in Fig. 28 shown handle in the released state. Fig. Figure 30 shows a schematic representation of the structure of the fabric covering in the stretched state according to embodiment 9. Fig. 31 a sectional view of the in Fig. 30 shown handle in the released state. Fig. Figure 32 shows a schematic representation of the structure of the fabric covering in the relaxed state according to embodiment 10. Fig. 33 shows a sectional view of Fig. 32. Fig. Figure 34 shows a schematic representation of the structure of the fabric covering in the stretched state according to embodiment 10. Fig. 35 shows a sectional view of Fig. 34. Fig. Figure 36 shows a sectional view of the fabric cover in a relaxed state according to embodiment 11. Fig. Figure 37 shows a sectional view of the fabric cover in the stretched state according to embodiment 11. Fig. Figure 38 shows a schematic representation of the structure of the fabric covering in the relaxed state according to embodiment 12. Fig. 39 a sectional view of the in Fig. 38 shown handle in the released state. Fig. Figure 40 shows a schematic representation of the structure of the fabric covering in the stretched state according to embodiment 12. Fig. 41 a sectional view of the in Fig. 40. Handle shown in the loosened state. Specific embodiments

[0038] The specific embodiments of the present invention are explained below with reference to the drawings. Design 1

[0039] As in Fig. As shown in Figure 1, a bed comprises a support frame 10, a fabric cover 20, a fabric cover connecting stand 30, and an adjustment device. The fabric cover connecting stand 30 is attached to the top of the support frame 10, and the two side edges of the fabric cover 20 are folded over the fabric cover connecting stand 30 to form a bed surface. The fabric cover has some elasticity, and its stretch rate is relatively low.

[0040] As in Fig. 1, Fig. 2, Fig. 3 to Fig. As shown in Figure 4, the fabric cover connecting stand 30 of the present embodiment consists of two first connecting rods 31 and two second connecting rods 32, which are connected one after the other to form a square frame, preferably a rectangular frame. A first connecting bushing 41 is attached to each end of the second connecting rod 32, and the first connecting rod 31 is fixed to the side of the first connecting bushing 41. To facilitate the connection of the first connecting rod 31, a second connecting bushing 42 can be fixedly attached to the side of the first connecting bushing 41, and the end of the first connecting rod 31 is firmly inserted into the second connecting bushing 42.

[0041] An adjustment device is attached to the first connecting bushing 41. In a preferred embodiment of the present invention, a group of adjustment devices is attached to each first connecting bushing 41 at both ends of the same first connecting rod 31 in this exemplary embodiment. According to the present invention, it is not necessary for all first connecting bushings 41 to be equipped with adjustment devices. Instead, a single first connecting bushing 41 with an adjustment device is sufficient. Alternatively, two, three, or even four first connecting bushings can each be provided with an adjustment device.

[0042] As in Fig. 1, Fig. 2, Fig. 3 to Fig. As shown in Figure 4, the adjusting device is a rotating screw 51 with an external thread. An internal thread is provided on the inner side wall of the first connecting bushing 41, and the rotating screw 51 is screwed into the internal thread from the outside of the first connecting bushing 41. The end head of the rotating screw 51 bears against the end head of the second connecting rod 32. Of course, in other embodiments, the end of the rotating screw 51 can also be fixedly connected to the end of the second connecting rod by means of a pin, so that it rotates the second connecting rod synchronously when the screw is turned.

[0043] Preferably the rotating screw 51 comprises, as shown in Fig. Figure 2 shows a screw body 511 with a hollow inner structure and a head 512 that is firmly connected to the screw body. The end of the second connecting rod 32 projects into the hollow inner structure of the screw body 511 and bears against the side wall of the connection end between the head 512 and the screw body 511. The projection of the second connecting rod 32 into the hollow inner structure of the screw body can increase the connecting force of the second connecting rod 32.

[0044] As in Fig. 2 and Fig. As shown in Figure 4, when the fabric cover is loosened, the rotating screw 51 is turned so that it approaches and moves towards the first connecting bushing 41. As it moves, the rotating screw 51 simultaneously pushes the first connecting rod 31 outwards, thereby increasing the distance between the two first connecting rods 31 and tightening the fabric cover.

[0045] As in Fig. As shown in Figure 1, a third connecting bushing 43 is attached to the base of the first connecting bushing 41. The support frame 10 comprises four support legs 11, the upper part of each support leg 11 being inserted into the third connecting bushing 43. The first connecting bushing 41, the second connecting bushing 42, and the third connecting bushing 43 are arranged in pairs perpendicular to each other in three-dimensional space.

[0046] To prevent the adjusting device from rotating backwards and thereby making the connection between the first connecting rod and the second connecting rod unstable, a recoil-stopping device is additionally provided on the first connecting bushing 41, which limits the rotation of the adjusting device.

[0047] As in Fig. 5, Fig. 6 to Fig. As shown in Figure 7, the recoil-prevention device of the present embodiment comprises a hinged cover 61, a pushrod 62, and a movable block 63. The hinged cover 61 is connected to the head 512 in such a way that it can be opened and closed. A pushrod 62 is provided on the underside of the hinged cover 61, and a movable block 63 is arranged at the front end of the screw body 511, which is connected to the head 512. Several projections 411 are provided on the through-bore of the first connecting bushing 41, which interacts with the rotating screw 51. When the rotating screw is turned, the hinged cover 61 is opened, and the movable block 63 remains in the same plane as the associated screw body due to the action of the side wall of the hinged cover 61.After tightening the rotating screw, the hinged cover 61 is folded over by 180° and closed, whereby the pushrod 62 on the underside of the hinged cover 61 is folded upwards and pushes out the movable block 63, so that the movable block 63 engages the projection 411 of the first connecting bushing 41 and thereby forms a recoil stop. Design 2

[0048] Win in Fig. As shown in Figure 8, the main difference between this embodiment and embodiment 1 lies in the recoil-stopping device. The recoil-stopping device of this embodiment has the following structure: A threaded bore 410 is formed in the side wall of the first connecting bushing 41, and a screw 412 is fitted into the threaded bore 410. When the rotating screw 51 is turned to its end position, the screw 412 is screwed in so that its end abuts against the rotating screw 51, thereby forming a recoil stop. embodiment 3

[0049] As in Fig. As shown in Figure 9, the main difference between this embodiment and embodiment 1 lies in the recoil-locking device. The recoil-locking device of this embodiment is particularly suitable for the following situation: The end of the rotating screw of the adjusting device is rigidly connected to the end of the second connecting rod via a pin, i.e., the rotating screw drives the second connecting rod synchronously when rotating. In this embodiment, the recoil-locking device has the following structure: No rotating screw is provided on the first connecting bushing at the other end of the second connecting rod 32; instead, a threaded bore 410 is formed in the side wall of this first connecting bushing, and a screw 412 is fitted into the threaded bore 410.When the rotating screw 51 is turned into its end position, the screw 412 is screwed in so that its end abuts against the second connecting rod, thereby forming a recoil barrier. Design 4

[0050] As in Fig. 10 and Fig. As shown in Figure 11, the head 512 of the rotating screw 51 in this embodiment is provided with a toothed knob to facilitate rotation of the rotating screw 51. The main difference between this embodiment and embodiment 1 lies in the recoil-prevention device. This recoil-prevention device in this embodiment uses a locking ring 64, which is rotatably connected to the side wall of the first connecting bushing 41 via a connecting seat 65. When the rotating screw 51 is turned to its end position, the locking ring 64 is folded over and pressed against the toothed knob of the head 512, thereby forming a recoil-prevention device. Design 5

[0051] As in Fig. 12, Fig. 13 to Fig. As shown in Figure 14, the main difference between this embodiment and embodiment 1 lies in the recoil-prevention device. The recoil-prevention device has the following structure: It includes a pressure switch 66. At the front end of the screw body 511 of the rotating screw (the end connected to the head), several positioning grooves 5110 are arranged at intervals on its circumferential surface. A switch mounting groove 413 is formed in the side wall of the front end of the first connecting bushing 41 (the end closer to the head of the rotating screw), to which the pressure switch 66 is attached. The width of the base of the pressure switch 66 is smaller than the width of the positioning grooves 5110.

[0052] A step 4131 is provided at one end of the switch mounting groove 413, and a positioning lug 4132 at the other end. A stepped groove 661 is provided at one end of the pressure switch 66, which fits the step 4131, and a positioning recess 662 is provided at the other end, which fits the positioning lug 4132.

[0053] When the positioning recess 662 of the pressure switch 66 is separated from the positioning lug 4132 and is located above the positioning lug 4132, the base of the pressure switch 66 does not protrude beyond the inner wall of the first connecting bushing 41, allowing the rotating screw 51 to rotate freely. When the rotating screw 51 is turned to its end position, the end of the pressure switch 66 with the positioning recess 662 is pressed downwards. If it cannot be pressed down, the rotating screw 51 is slightly adjusted so that the positioning grooves 5110 on the rotating screw 51 correspond with the pressure switch 66. When the pressure switch 66 is pressed down, the positioning recess 662 lowers and engages in the positioning lug 4132.At this point, the base of the pressure switch 66 protrudes beyond the inner wall of the first connecting socket 41 at this end and accordingly engages in the positioning grooves 5110, thereby limiting the rotation of the rotating screw 51 and forming a recoil stop. Design 6

[0054] As in Fig. 15 and Fig. As shown in Figure 16, a bed in this embodiment comprises a support frame 10, a fabric cover 20, a fabric cover connecting stand 30, and an adjustment device. The fabric cover connecting stand 30 is attached to the top of the support frame 10, and the two side edges of the fabric cover 20 are folded over the fabric cover connecting stand 30 to form a bed surface.

[0055] As in Fig. 15 and Fig. As shown in Figure 16, the fabric cover connecting stand 30 of the present embodiment consists of two first connecting rods 31 and two second connecting rods 32, which are connected one after the other to form a rectangular frame. A first connecting bushing 41 is attached to each end of the second connecting rod 32, and the first connecting rod 31 is fixed to the side of the first connecting bushing 41. To facilitate the connection of the first connecting rod 31, a second connecting bushing 42 can be fixedly attached to the side of the first connecting bushing 41, and the end of the first connecting rod 31 is firmly inserted into the second connecting bushing 42.

[0056] As in Fig. As shown in Figure 15, an adjustment device is attached to the first connecting socket 41. The main difference between this embodiment and embodiment 1 lies in the different structure of the adjustment device.

[0057] Win in Fig. 17 and Fig. As shown in Figure 18, the adjusting device of this embodiment is a linear ratchet mechanism comprising a mounting base 71, a handle 72, a movable sleeve 73, a first pawl 74, and a second pawl 75. A rectangular groove 413 is formed in the upper surface of the first connecting sleeve 41, forming the mounting base 710. The end of the second connecting rod 32 is received in the movable sleeve 73, and several ratchet teeth 731 are provided on the upper surface of the movable sleeve 73, arranged in a straight line and at equal intervals along the upper surface of the movable sleeve. The movable sleeve 73 penetrates the mounting base 71, and the ratchet teeth 731 are accordingly located in the rectangular groove 413.

[0058] As in Fig. 17 and Fig. As shown in Figure 18, one end of the projecting handle 72 is rotatably connected to the mounting base 71 via a pivot axis 721. On the front and rear sides of the handle 72, which are located around the pivot axis 721, the first pawl 74 and the second pawl 75 are each pivotally mounted. The length of the second pawl 75 is greater than that of the first pawl 74. The first pawl 74 moves incrementally along the ratchet teeth 731 with the oscillation of the handle 72, while the second pawl 75 forms a recoil stop.

[0059] As in Fig. As shown in Figure 18, the handle 72 is in the upright position when the linear ratchet mechanism is in the disengaged state. The first pawl 74 disengages from the ratchet teeth under the action of the handle 72, while the end of the second pawl 75 rests against the ratchet teeth 731. As shown in Fig. As shown in Figure 19, the handle 72 rotates towards the first pawl 74, and the free end of the first pawl 74 abuts the ratchet teeth (forming an acute angle). As the handle is pressed further downwards, the angle between the first pawl 74 and the corresponding ratchet teeth 731 becomes smaller and smaller, i.e., the horizontal force component of the first pawl 74 on the ratchet teeth 731 increases, thereby displacing the movable sleeve 73 and forming a feed state. As shown in Fig. As shown in Figure 20, the first pawl 74 disengages from the ratchet teeth 731 due to the displacement of the ratchet teeth 731 when the handle 72 is pressed down further; that is, the first pawl 74 disengages and rests against the handle 72, while the second pawl 75 rests against the rear ratchet teeth 731 and forms a recoil stop.

[0106] As shown in Fig. As shown in Figure 21, the handle 72 is in a position parallel to the top of the mounting base 71. The bottom of the rotating end of the first pawl 74 engages in the gap between two ratchet teeth 731, while the free end of the second pawl 75 releases from the ratchet teeth 731 and rotates to the top of the handle 72.

[0060] As in Fig. 15, Fig. 16 to Fig. As shown in Figure 17, when the fabric cover 20 is loosened by pressing the handle 72, the linear ratchet mechanism moves the movable sleeve 73. The movable sleeve 73 drives the second connecting rod 32 to move in a direction away from the linear ratchet mechanism, thereby moving the first connecting rod 31 outwards and tensioning the fabric cover 20.

[0061] A handle locking mechanism is also attached to the mounting base. The handle locking mechanism comprises a hook bar 81 and a locking hook 82. The hook bar 81 is attached to the side wall of the handle 72, and the locking hook 82 is attached to the side wall of the mounting base 71. When the handle 72 is positioned on top of the mounting base 71, the locking hook 82 engages with the hook bar 81, thereby locking the handle 72. Model 7

[0062] As in Fig. 22 or Fig. As shown in Figure 24, a bed further comprises a support frame 10, a fabric cover 20, a fabric cover connecting stand 30, and an adjustment device. The fabric cover connecting stand 30 is attached to the top of the support frame 10, and the two side edges of the fabric cover 20 are folded over the fabric cover connecting stand 30 to form a bed surface.

[0063] As in Fig. 22 and Fig. As shown in Figure 23, the fabric cover connecting stand 30 of the present embodiment consists of two first connecting rods 31 and two second connecting rods 32, which are connected one after the other to form a square frame, preferably a rectangular frame.

[0108] At least one of the second connecting rods 32 consists of two or more short tubes 321. Two adjacent short tubes 321 are connected to each other via the adjusting device. The short tubes 321 at both ends of the second connecting rod 32 are also firmly connected to the first connecting rod 31 via connecting tubes.

[0064] As in Fig. 22, Fig. 23, Fig. 24 to Fig. As shown in Figure 25, both second connecting rods 32 in this embodiment consist of two short tubes 321 connected to each other. An internal threaded section 3211 is provided on the inner wall of each short tube 321, and the thread directions are opposite between two adjacent short tubes 321. The adjusting device is a rotary rod 52, with external threaded sections 521 provided at each of the two ends of the rotary rod 52, which are screwed correspondingly into the internal threaded sections 3211 of the two adjacent short tubes. When the fabric cover loosens, the two rotary rods 52 rotate simultaneously, causing the ends of the short tubes 321 to move simultaneously to both sides and to push the corresponding first connecting rods 31 outwards, thereby tensioning the fabric cover 20.

[0065] To prevent the adjusting device from rotating backwards and the short tubes 321 from approaching each other, a recoil-stopping device is also provided on the short tubes 321, which limits the rotation of the rotary rods.

[0113] The recoil-stopping device of this embodiment can use the mechanisms of embodiment 2 or 3, and this is not explained in detail here. Design 8

[0066] The main difference between this embodiment and embodiment 7 lies in the different adjustment device. As in Fig. 26 and Fig. As shown in Figure 27, the adjusting device of this embodiment is also a rotary rod 52, and this rotary rod 52 is integrally formed with one of the short tubes 321. Naturally, the rotary rod 52 can also be rigidly connected to this short tube 321. An internal threaded section 3211 is provided on the inner wall of the other short tube 321, which is connected correspondingly to the external threaded section of the rotary rod 52. In this embodiment, the short tube 321 integrally formed with the rotary rod 52 must rotate together with the rotary rod 52 during adjustment. Therefore, the other end of the short tube 321, which is furthest from the rotary rod 52, should preferably be connected to the first connecting bushing via a movable connection to facilitate the rotation of the rotary rod during adjustment.When the fabric cover loosens, the rotating rod is turned manually, increasing the distance between the short tube connected to the rotating rod and the other short tube. This pushes the corresponding first connecting rods outwards, ultimately tightening the fabric cover.

[0067] Furthermore, to prevent the rotary rod from rotating backwards after reaching the adjustment position, a recoil-stopping device can be provided on the outer wall of the short tube 321 in which the internal thread 3211 is formed. In particular, the same type as in embodiment 2 can be used, in which a threaded bore interacts with a screw. Design 9

[0068] As in Fig. 28 or Fig. As shown in Figure 30, a bed further comprises a support frame 10, a fabric cover 20, a fabric cover connecting stand 30, and an adjustment device. The fabric cover connecting stand 30 is attached to the top of the support frame 10, and the two side edges of the fabric cover 20 are folded over the fabric cover connecting stand 30 to form a bed surface.

[0069] As in Fig. As shown in Figure 28, the fabric cover connecting stand 30 of the present embodiment consists of two first connecting rods 31 and two second connecting rods 32, which are connected one after the other to form a rectangular frame. At least one of the second connecting rods 32 consists of two or more short tubes 321. Two adjacent short tubes 321 are connected to each other via the adjusting device. The short tubes 321 at both ends of the second connecting rod 32 are also rigidly connected to the first connecting rod 31 via connecting tubes.

[0070] The main difference between this embodiment and embodiment 7 lies in the different structure of the adjusting device. As shown in Fig. 29 The adjusting device of this embodiment comprises a linear ratchet mechanism comprising 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 attached to the end of one of the short tubes 321, and the end of the other short tube 321 is fixedly received in the movable sleeve 73. A rectangular groove 413 is formed in the top of the mounting base 71, and several ratchet teeth 731 are provided on the top of the movable sleeve 73. The movable sleeve 73 penetrates the mounting base 71, with the ratchet teeth 731 being positioned in the rectangular groove 413. The handle 72 is rotatably connected to the mounting base 71 via a pivot axis 721.

[0117] On the front and rear sides of the handle 72, which are located around the axis of rotation 721, the first latch 74 and the second latch 75 are each pivotally connected.The length of the second pawl 75 is greater than that of the first pawl 74. The first pawl 74 moves forward along the ratchet teeth 731 as the handle 72 pivots, and the second pawl forms a recoil stop. The principle of forward movement and recoil stop of the linear ratchet mechanism is identical to embodiment 6 and is not explained in detail here.

[0071] As in Fig. 28 and Fig. As shown in Figure 29, a handle locking mechanism is further attached to the mounting base, comprising a hook rod 81 and a locking hook 82, wherein the hook rod 81 is attached to the side wall of the handle 72, the locking hook 82 is attached to the side wall of the mounting base 71, and wherein the locking hook 82 is engaged on the hook rod 81 when the handle 72 lies flat on the top of the mounting base 71. Design 10

[0072] As in Fig. 32 or Fig. As shown in Figure 34, a bed in this embodiment comprises a support frame 10, a fabric cover 20, a fabric cover connecting stand 30, and an adjustment device. The fabric cover connecting stand 30 is attached to the top of the support frame 10, and the two side edges of the fabric cover 20 are folded over the fabric cover connecting stand 30 to form a bed surface.

[0073] As in Fig. 32, Fig. 33, Fig. 34 to Fig. As shown in Figure 35, the fabric cover connecting stand 30 of this embodiment comprises two parallel first connecting rods 31. The support frame 10 consists of two groups of support rod elements, with the equilateral ends of the two first connecting rods 31 being connected to one group. Each support rod element comprises two support rods 12 and a second connecting rod 32. The lower ends of the two support rods 12 are symmetrically connected to the two ends of the second connecting rod 32. Preferably, the support rods form an obtuse angle with the corresponding second connecting rod 32 to ensure good support. Of course, the support rods can also form a right angle or acute angle with the corresponding second connecting rod 32, as long as the support rods have sufficient strength.The upper end of each support rod 12 is firmly connected to the lower surface of the end of the first connecting rod 31. The plane enclosed by the two support rods 12 and the second connecting rod 32 is perpendicular to the plane in which the two first connecting rods 31 are located.

[0074] In this arrangement, at least one group of the second connecting rods 32 consists of two or more short tubes 321, and two adjacent short tubes 321 are connected to each other via the preceding adjusting device.

[0075] As in Fig. 32 and Fig. As shown in Figure 33, both second connecting rods 32 shown in this embodiment consist of two short tubes 321 connected to each other. An internal threaded section 3211 is provided on the inner wall of each short tube 321, and the thread directions are opposite between the two short tubes 321. The adjusting device is a rotary rod 52, with external threaded sections 521 provided at each of the two ends of the rotary rod 52, which are screwed correspondingly into the internal threaded sections of the two short tubes. As shown in Fig. 33 and Fig. As shown in Figure 35, both rotating rods 52 rotate simultaneously when the fabric cover 20 loosens, causing the ends of the short tubes 321 to move to both sides at the same time. Since the end of each short tube 321 is connected to the first connecting rod 31 via the support rod 12, the short tubes 321 move to both sides and simultaneously push the first connecting rods 31, which are connected to the support rods 12, outwards, thereby tensioning the fabric cover 20.

[0076] To prevent the adjusting device from rotating backwards and the short tubes from approaching each other, a recoil-stopping device is also provided on the short tubes 321, which limits the rotation of the rotary rods 52. This recoil-stopping device is to be used with the mechanisms of embodiment 2 or 3, and is not explained in detail here.

[0077] The upper end of the short tube 321 and the corresponding support rod 12 can either be formed in one piece or be firmly connected via a sleeve. Design 11

[0078] The main difference between this embodiment and embodiment 10 lies in the different adjustment device. As in Fig. 36 and Fig. As shown in Figure 37, the adjusting device of this embodiment is also a rotary rod 52, and this rotary rod 52 is integrally formed with one of the short tubes 321. Naturally, the rotary rod 52 can also be rigidly connected to this short tube 321. An internal threaded section 3211 is provided on the inner wall of the other short tube 321, which is connected correspondingly to the external threaded section of the rotary rod 52. In this embodiment, the short tube 321 integrally formed with the rotary rod 52 must rotate together with the rotary rod 52 during adjustment. Therefore, the other end of the short tube 321, which is furthest from the rotary rod 52, should preferably be connected to the support rod 12 via a movable connection to facilitate the rotation of the rotary rod during adjustment.When the fabric cover loosens, the rotating rod is turned manually, increasing the distance between the short tube connected to the rotating rod and the other short tube. The corresponding first connecting rods are then pushed outwards over the support rods 12, ultimately tensioning the fabric cover.

[0079] Furthermore, to prevent the rotary rod from rotating backwards after reaching the adjustment position, a recoil-stopping device can be provided on the outer wall of the short tube 321 in which the internal thread 3211 is formed. In particular, the same type as in embodiment 2 can be used, in which a threaded bore interacts with a screw. Design 12

[0080] As in Fig. 38 and Fig. As shown in Figure 40, a bed in this embodiment further comprises a support frame 10, a fabric cover 20, a fabric cover connecting stand 30, and an adjustment device. The fabric cover connecting stand 30 is attached to the top of the support frame 10, and the two side edges of the fabric cover 20 are folded over the fabric cover connecting stand 30 to form a bed surface.

[0081] As in Fig. 38 and Fig. As shown in Figure 40, the fabric cover connecting stand 30 of this embodiment comprises two parallel first connecting rods 31. The support frame 10 consists of two groups of support rod elements, wherein the equilateral ends of the two first connecting rods 31 are connected to one group of support rod elements. Each support rod element comprises two support rods 12 and a second connecting rod 32.

[0082] as in Fig. 38 and Fig. As shown in Figure 40, at least one group of the second connecting rods 32 consists of two or more short tubes 321, and two adjacent short tubes 321 are connected to each other via the foreground adjusting device.

[0083] The main difference between this embodiment and embodiment 10 lies in the different structure of the adjusting device. The adjusting device in this embodiment uses the same linear ratchet mechanism as in embodiment 8. As in Fig. 39 and Fig. As shown in Figure 41, it comprises 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 attached to the end of one of the short tubes 321, and the end of the other short tube 321 is firmly received in the movable sleeve 73. A rectangular groove 413 is formed in the top of the mounting base 71, and several ratchet teeth 731 are provided on the top of the movable sleeve 73. The movable sleeve 73 penetrates the mounting base 71, with the ratchet teeth 731 positioned in the rectangular groove 413. The handle 72 is rotatably connected to the mounting base 71 via a pivot axis 721.

[0117] On the front and rear sides of the handle 72, which are located around the axis of rotation 721, the first latch 74 and the second latch 75 are each pivotally connected. The length of the second latch 75 is greater than that of the first latch 74.The first pawl 74 moves forward along the ratchet teeth 731 as the handle 72 pivots, and the second pawl forms a recoil stop. The principle of forward movement and recoil stop of the linear ratchet mechanism is identical to embodiment 6 and is not explained in detail here.

[0084] As in Fig. 38 and Fig. As shown in Figure 39, a handle locking mechanism is further attached to the mounting base, comprising a hook rod 81 and a locking hook 82, wherein the hook rod 81 is attached to the side wall of the handle 72, the locking hook 82 is attached to the side wall of the mounting base 71, and wherein the locking hook 82 is engaged on the hook rod 81 when the handle 72 lies flat on the top of the mounting base 71.

[0085] If the length of the first connecting rod is relatively large, each first connecting rod in the above embodiments can also be composed of several section-wise connecting rods by fixed connection to facilitate transport.

[0086] In the foregoing embodiments, the description “the first connecting rod moves outwards” refers to the fact that the first connecting rod is moved in a direction away from the center line of the bed surface.

[0087] The foregoing information merely represents specific embodiments of the present invention; however, the concept of the present invention is not limited thereto. Any non-substantial modification of the present invention using this concept shall be considered an infringement of the scope of protection of the present invention. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 215422216U

[0002] CN 102106265A

[0005]

Claims

[1] Bed comprising a support frame, a fabric cover and a fabric cover connecting stand, wherein the fabric cover connecting stand is connected to the top or upper middle part of the support frame, and the fabric cover connecting stand has a square frame formed by two first connecting bars and two second connecting bars connected successively, and wherein the edges of the four side faces of the fabric cover are each connected to the first connecting bars and the second connecting bars to form a bed surface, characterized by , that a connecting element is arranged on at least one of the second connecting rods, on which an adjusting device for driving the movement of the second connecting rod is provided, wherein the distance between the two first connecting rods is increased or decreased by the adjusting device. [2] Bed according to claim 1, characterized by, that the two first connecting rods and the two second connecting rods are connected one after the other to form a rectangular frame, wherein a first connecting bushing is attached to each end of each second connecting rod, and wherein the two ends of each first connecting rod are each connected to the side face of the first connecting bushing accordingly. [3] Bed according to claim 1 or 2, characterized by , that one of the adjusting devices is arranged at one of the first connecting bushings of each first connecting rod. [4] Bed according to claim 3, characterized by, that the adjusting device is a rotating screw with an external thread, and that the inner wall of the first connecting bushing is provided with an internal thread, wherein the rotating screw is screwed into the internal thread from the outside of the first connecting bushing, and one end of the rotating screw is either firmly connected to or in contact with one end of the second connecting rod. [5] Bed according to claim 4, characterized by , that the rotating screw comprises a screw body with a hollow interior and a head firmly connected to the screw body, and that the end of the second connecting rod extends into the hollow interior and rests against the inner wall of the connection point between the head and the screw body. [6] Bed according to claim 4 or 5, characterized by , that a recoil-stopping device is also provided at the first connecting socket, which limits the rotation of the adjusting device. [7] Bed according to claim 6, characterized by , that the recoil-stopping device comprises a hinged cover, a pushrod and a movable block, wherein the hinged cover is hinged to the head of the rotating screw in a manner that allows it to be flipped up and down, wherein a pushrod is provided on the underside of the hinged cover, and a movable block is arranged on the front of the connection point between the screw body and the head of the rotating screw, and that several projections are provided on a through-bore of the first connecting bushing that interacts with the rotating screw. [8] Bed according to claim 3, characterized by, that the adjusting device is a linear ratchet mechanism comprising a mounting base, a handle, a movable sleeve, a first pawl and a second pawl, and that the top of the first connecting sleeve is provided with a rectangular groove forming the mounting base, the end of the second connecting rod being inserted into the movable sleeve, and the top of the movable sleeve being provided with several ratchet teeth, the movable sleeve being inserted into the mounting base, the ratchet teeth being arranged accordingly in the rectangular groove, and the handle being rotatably connected to the mounting base via a pivot axis, and the first pawl and the second pawl being hinged to the front and rear sides of the handle, respectively, which are located around the pivot axis, the length of the second pawl being greater than that of the first pawl, and the first pawl advancing along the ratchet teeth as the handle pivots,and the second latch forms a recoil barrier. [9] Bed according to claim 8, characterized by , that a handle locking mechanism is further attached to the mounting base, comprising a hook bar and a locking hook, wherein the hook bar is attached to the side wall of the handle, the locking hook is attached to the side wall of the mounting base, and wherein the locking hook is engaged on the hook bar when the handle is lying flat on the top of the mounting base. [10] Bed according to claim 3, characterized by, that a second connecting bushing is attached to the side surface of the first connecting bushing, wherein the first connecting rod is fixedly arranged in the second connecting bushing, and that a third connecting bushing is further attached to the underside of the first connecting bushing, and that the support frame comprises four support legs, wherein the upper end part of each support leg is inserted into the third connecting bushing, and that the first connecting bushing, the second connecting bushing and the third connecting bushing are perpendicular to each other in three-dimensional space. [11] Bed according to claim 1, characterized by that the bed is one of the group consisting of a folding bed, a camp bed, a pet bed or a pet camp bed. [12] Bed comprising a support frame, a fabric cover and a fabric cover connecting stand, wherein the fabric cover connecting stand is connected to the top or upper middle part of the support frame, wherein the fabric cover connecting stand has a square frame formed by two first connecting bars and two second connecting bars connected successively, and wherein the edges of the four side surfaces of the fabric cover are each connected to the first connecting bars and the second connecting bars to form a bed surface, characterized by , that at least one of the second connecting rods consists of two or more short tubes, wherein at least two adjacent short tubes are connected via an adjusting device, the corresponding short tubes being driven by the adjusting device to relative movement in order to increase or decrease the distance between the two first connecting rods. [13] Bed according to claim 12, characterized by , that both second connecting rods each consist of two short tubes, that in the case of the two short tubes of each second connecting rod the end facing each other is connected via the adjusting device, and that the other end facing away from each other is firmly connected to the first connecting rod via a connecting tube piece. [14] Bed according to claim 12, characterized by , that an internal thread section is provided on the inner wall of each short tube and the thread directions between two adjacent short tubes are opposite, and that the adjusting device is a rotary rod, wherein external thread sections are provided at each of the two ends of the rotary rod, which are screwed correspondingly into the internal thread sections of the two adjacent short tubes. [15] Bed according to claim 12, characterized by, that the adjusting device is a rotary rod with an external threaded section, wherein the rotary rod is either rigidly connected to one of the short tubes or formed integrally with it, and that an internal threaded section is provided on the inner wall of the other short tube, which is connected correspondingly to the external threaded section of the rotary rod. [16] Bed according to claim 14 or 15, characterized by , that a recoil-stopping device is also provided on the outer wall of the short tube, which limits the rotation of the adjusting device. [17] Bed according to claim 12, characterized by, that the adjusting device comprises a mounting base, a handle, a movable sleeve, a first pawl and a second pawl, wherein one end of the mounting base is attached to the end of one of the short tubes, one end of the other short tube is firmly inserted into the movable sleeve, the top of the movable sleeve being provided with several ratchet teeth, and a rectangular groove being formed in the top of the mounting base, and wherein the movable sleeve is inserted into the mounting base, the ratchet teeth being arranged accordingly in the rectangular groove, and wherein the handle is rotatably connected to the mounting base via a pivot axis, and the first pawl and the second pawl are each hinged to the front and rear sides of the handle, which are located about the pivot axis, wherein the length of the second pawl is greater than that of the first pawl, and the first pawl advances along the ratchet teeth as the handle pivots,and the second latch forms a recoil barrier. [18] Bed according to claim 17, characterized by , that a handle locking mechanism is further attached to the mounting base, comprising a hook bar and a locking hook, wherein the hook bar is attached to the side wall of the handle, the locking hook is attached to the side wall of the mounting base, and wherein the locking hook is engaged on the hook bar when the handle is lying flat on the top of the mounting base. [19] Bed according to claim 12, characterized by that the bed is one of the group consisting of a folding bed, a camp bed, a pet bed or a pet camp bed. [20] Bed comprising a support frame, a fabric cover and a fabric cover connecting stand, wherein the fabric cover connecting stand is connected to the top or upper middle part of the support frame, the fabric cover connecting stand comprises two first connecting bars and the fabric cover is attached to the two first connecting bars to form a bed surface, characterized bythat the support frame comprises at least two groups of support rod elements arranged at a distance from each other on the underside of the first connecting rods, each support rod element comprising two support rods and a second connecting rod, the lower ends of the two support rods being connected to the two ends of the second connecting rod, the upper end of each support rod being rigidly connected to the first connecting rod, and at least one of the second connecting rods consisting of two or more short tubes, and wherein at least two adjacent short tubes are connected via an adjusting device, and the corresponding short tubes are driven by the adjusting device to cause the support rods to move relative to each other, such that the distance between the two first connecting rods is increased or decreased. [21] Bed according to claim 20, characterized by, that the two support rods are symmetrically connected to the two ends of the second connecting rod, and that the plane formed by the two support rods and the second connecting rod is perpendicular to the plane in which the two first connecting rods are located. [22] Bed according to claim 21, characterized by , that both second connecting rods each consist of two short tubes, that in the case of the two short tubes of each second connecting rod the end facing each other is connected via the adjusting device, and that the other end facing away from each other is firmly connected to the support rod via a connecting tube piece. [23] Bed according to claim 22, characterized by, that an internal thread section is provided on the inner wall of each short tube and the thread directions between two adjacent short tubes are opposite, and that the adjusting device is a rotary rod, wherein external thread sections are provided at each of the two ends of the rotary rod, which are screwed correspondingly into the internal thread sections of the two adjacent short tubes. [24] Bed according to claim 22, characterized by , that the adjusting device is a rotary rod with an external threaded section, wherein the rotary rod is either rigidly connected to one of the short tubes or formed integrally with it, and that an internal threaded section is provided on the inner wall of the other short tube, which is connected correspondingly to the external threaded section of the rotary rod. [25] Bed according to claim 23 or 24, characterized by, that a recoil-stopping device is also provided on the outer wall of the short tube, which limits the rotation of the adjusting device. [26] Bed according to claim 22, characterized by, that the adjusting device comprises a mounting base, a handle, a movable sleeve, a first pawl and a second pawl, wherein one end of the mounting base is attached to the end of one of the short tubes, one end of the other short tube is firmly inserted into the movable sleeve, the top of the movable sleeve being provided with several ratchet teeth, and a rectangular groove being formed in the top of the mounting base, and wherein the movable sleeve is inserted into the mounting base, the ratchet teeth being arranged accordingly in the rectangular groove, and wherein the handle is rotatably connected to the mounting base via a pivot axis, and the first pawl and the second pawl are each hinged to the front and rear sides of the handle, which are located about the pivot axis, wherein the length of the second pawl is greater than that of the first pawl, and the first pawl advances along the ratchet teeth as the handle pivots,and the second latch forms a recoil barrier. [27] Bed according to claim 26, characterized by , that a handle locking mechanism is further attached to the mounting base, comprising a hook bar and a locking hook, wherein the hook bar is attached to the side wall of the handle, the locking hook is attached to the side wall of the mounting base, and wherein the locking hook is engaged on the hook bar when the handle is lying flat on the top of the mounting base. [28] Bed according to claim 1, characterized by that the bed is one of the group consisting of a folding bed, a camp bed, a pet bed or a pet camp bed.

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