A folding camp bed

Abstract

The present invention provides a folding camp bed, which mainly includes: a telescopic handle or a fixed handle, which is arranged at the upper end of a middle transverse cross leg tube, a horizontal tube is sleeved with a sliding sleeve or hinged with one end of a rotating rod, and the other end of the sliding sleeve or the rotating rod is hinged with the upper ends of the transverse cross leg tubes at both ends, and three groups of transverse cross leg tubes are directly crossed and touch the ground in pairs, and they are arranged by longitudinal hinge connection of the cross tubes, wherein the lower end of a push-pull tube is hinged with the middle transverse cross leg tube near the middle hinge point, and the other end is hinged with a telescopic handle, which can slide on the upper end of the middle transverse cross leg tube, and similarly, when a rotating rod is used, the rotating rod can rotate around the horizontal tube and the transverse cross leg tubes at both ends, so that the folding camp bed can be folded and unfolded more smoothly, the system rigidity and strength are better, and a flexible or rigid bed surface tensioning device can also make the bed surface flatter. The present invention has the characteristics of advanced design, convenient operation, simple structure and low cost.

Description

Technical Field

[0001] The invention relates to furniture products for travel and leisure, in particular to folding camp beds and other folding products, such as folding beds, folding tables, folding chairs and the like. Background Art

[0002] Among the existing camp beds for tourism and leisure products, the most common one is a camp bed with three groups of horizontal parallel cross-arranged, horizontal cross leg tubes directly touching the ground, plus a horizontal tube hinged thereto and locked with a locking plate. This structure is relatively simple and concise, and the lateral force condition is also the best. Although it can be folded, it is relatively cumbersome and complicated to fold and unfold. When folding, it usually takes several turns to fold into a stick shape. When unfolding, it is also very laborious to tighten the fabric, and it cannot be adjusted, which is very inconvenient. In other words, it cannot be conveniently folded and unfolded at one time and in one step. In recent years, there have been several folding beds similar to the present invention that can be folded and unfolded at one time. The patent application numbers of these folding beds are: 200420078780.3, 200620068204.X, 200720046299.X, authorization announcement number: CN2730234Y, CN2872988Y, CN201073132Y, its folding process is similar to that of the present invention, and it can also be folded and unfolded in one step at one time, but its structure and movement principle adopts that the longitudinal cross tubes on both sides directly touch the ground, and the movement changes of the longitudinal cross tubes on both sides and the four-link are used to match and adapt to the transverse cross tubes, and finally fold into a stick or column shape. Moreover, in these folding beds, the improvement of the comfort of the folding process is achieved by adopting telescopic or rotating pipe sleeves at both ends of the folding bed, or rotating pipe fittings, which results in that the lateral rigidity of the existing technology is relatively poor, the structure is quite complicated, and the manufacturing cost is high. Summary of the invention

[0003] The purpose of the present invention is to provide a folding camp bed with a simple structure, three groups of horizontal cross leg tubes arranged in pairs, directly touching the ground, the cross tubes arranged longitudinally, and the handles automatically telescopically adjusted. It can be conveniently folded and unfolded in one step at a time, and the fabric tension can be adjusted.

[0004] The object of the present invention is achieved by the following measures:

[0005] A folding camp bed comprises: a telescopic handle (1), a rotating hinge (2), a horizontal tube (3), transverse cross leg tubes (4, 5, 6, 7, 8, 9), a middle hinge plate (10, 14), a hinge plate (11), a sliding sleeve (15, 23, 26, 27), a reinforcing plate (16), a cross tube (13), a hinge (12), a push-pull tube (21, 22), a top rod (17), a tightening buckle (18), and a tightening belt (19, 20), characterized in that the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are directly crossed and touch the ground in pairs, the axial holes (2.1) at both ends of the telescopic handle (1) are hinged to the rotating hinge (2), one end of the horizontal tube (3) is hinged to the rotating hinge (2), and the other end is inserted into the sliding sleeve (15, 23, 26, 27) and can slide in the sliding sleeve; the transverse cross leg tubes (7, 8) at both ends are directly crossed and touch the ground in pairs, the axial holes (2.1) at both ends of the telescopic handle (1) are hinged to the rotating hinge (2), and one end of the horizontal tube (3) is hinged to the rotating hinge (2), and the other end is inserted into the sliding sleeve (15, 23, 26, 27) and can slide in the sliding sleeve; The upper part of the foldable military bed is fixed with a riveted reinforcement plate (16); sliding sleeves (15, 23, 26, 27) are hinged between the transverse cross leg tubes (7, 8) at both ends and the reinforcement plate (16), which are pressed by the reinforcement plate (16) and can rotate around the hinge point (16.1); the cross tubes (13) are arranged longitudinally, and after being hinged in pairs in the middle, they are respectively hinged in pairs with the transverse cross leg tubes (4, 5, 6, 7, 8, 9) through hinges (12); the lower ends of the push-pull tubes (21, 22) are hinged with the transverse cross leg tubes (4, 5) or the middle hinged pieces (10, 14), and the other ends are hinged with the telescopic handle (1). When folding and unfolding the foldable military bed, the telescopic handle (1) can be pulled or pushed to slide along the upper part of the transverse cross leg tubes (4, 5).

[0006] Preferably, the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) can cross and touch the ground in pairs in the same plane via the middle hinge piece (10, 14) and the hinge piece (11), or can directly cross and hinge and touch the ground in different parallel planes. When the transverse cross leg tubes (4, 5, 6, 7, 8, 9) directly cross and hinge and touch the ground in different parallel planes, the middle hinge piece (10, 14) and the hinge piece (11) can be omitted. In this case, the transverse cross leg tubes (5, 6,) and the transverse cross leg tubes (8, 9,) are each in the form of a single tube.

[0007] Preferably, the cross section of the horizontal tube (3) is provided with an open fabric support groove (3.4) or a closed fabric support groove (3.3) for fabric tensioning; wherein the horizontal tube (3) provided with the open fabric support groove (3.4) is also provided with a plurality of rivet holes (3.1), so that the two side surfaces of the horizontal tube (3) can be riveted together in advance, so that the open fabric support groove (3.4) of the horizontal tube (3) will not be deformed under the fabric tensioning force.

[0008] Preferably, the sliding surface of the cross section of the horizontal tube (3) can be a plane, or can be provided with 1-3 V-shaped grooves (3.2) or T-shaped grooves (3.5), and the sliding sleeves (15, 23, 26, 27) matching the horizontal tube (3) also have corresponding matching V-shaped bosses (23.1, 26.1) or T-shaped bosses (27.1). In this way, the sliding sleeves (15, 23, 26, 27) can slide smoothly along the horizontal tube (3) and will not separate from the horizontal tube (3).

[0009] Preferably, the lower end of the push-pull tube (21, 22) can be hinged to the middle hinge plate (10, 14), or directly hinged to the transverse cross leg tube (4, 5), and its hinge point (21.1, 22.1) is close to the common hinge point (28) of the middle hinge plate (10, 14) and the transverse cross leg tube (4, 5). When folding or unfolding the foldable camp bed, the push-pull tube (21, 22) can push the telescopic handle (1) upward or pull it downward to change the distance between the hinge point (21.1, 22.1) and the common hinge point (28), so as to adjust the sliding stroke of the telescopic handle (1), thereby adjusting the smoothness of folding and unfolding the foldable camp bed.

[0010] Preferably, the cross tubes (13) arranged in pairs longitudinally can be configured in multiple groups of hinged forms through the hinges (12), and can be arranged in a full arrangement of 4 groups of cross tubes (13), in a parallel arrangement of 2 groups of cross tubes (13) on both sides, or in a diagonally symmetrical arrangement of 2 groups of cross tubes (13) on both sides. Among them, the full arrangement of 4 groups of cross tubes (13) is the smoothest in folding and unfolding, and the arrangement of 2 groups of cross tubes (13) on both sides requires less consumables and has a lower cost.

[0011] Preferably, 1-3 groups of tightening buckles (18) and tightening belts (19, 20) are installed at the upper and lower ends of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed; similarly, 1-3 groups of tightening tubes (17) and matching riveted locking pins (25) can also be hingedly installed on the upper part of the three groups of transverse cross leg tubes (4, 5, 7, 8) of the folding camp bed, a pin groove (17.1) is opened at one end of the tightening tube (17), and a spring clip (35) is installed at the lower part of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed corresponding to the tightening tube (17).

[0012] Preferably, the hinge (12) can be L-shaped or U-shaped. The L-shaped hinge can make the foldable camp bed fold to the most compact size, while the U-shaped hinge has a higher connection strength.

[0013] A folding camp bed, comprising: a handle (30), a horizontal tube (31), transverse cross leg tubes (4, 5, 6, 7, 8, 9), a hinge plate (11), a rotating rod (32, 36), a support (33), a guide block (34), a cross tube (13), a hinge (12), a top rod (17), a tightening buckle (18), and a tightening belt (19, 20), characterized in that the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are directly crossed and touch the ground in pairs, the two ends of the handle (30) are hinged to the horizontal tube (3), one end of the rotating rod (32, 36) is hinged to the horizontal tube (3), and the other end of the rotating rod (32, 36) is hinged to the horizontal tube (3). The middle part is hinged, and the other end is hinged to the upper part of the transverse cross leg tubes (7, 8) at both ends and the support (33) fixed thereto. The rotating rods (32, 36) can rotate around the hinge points (32.1, 36.1) of the horizontal tube (3) and the hinge points (33.2, 36.2) at the upper part of the transverse cross leg tubes (7, 8) at both ends. The cross tubes (13) are arranged longitudinally. After being hinged in pairs in the middle part, they are respectively hinged in pairs to the transverse cross leg tubes (4, 5, 6, 7, 8, 9) through hinges (12).

[0014] When folding the camp bed, the handle (30) is lifted upward or the handles (30) on both sides are brought close to each other, which drives the horizontal tubes (31) to move close to each other. At this time, the transverse cross leg tubes (4, 5, 6, 7, 8, 9) and the cross tube (13) also move in the folding direction. Under the folding action of the cross tube (13), the transverse cross leg tubes (7, 8) at both ends move parallel to the center and are connected with the fixed supports (33) on the upper parts of the transverse cross leg tubes (7, 8) at both ends. ) hinged rotating rods (32, 36) rotate around the hinge points (32.2, 36.2) on the one hand, and around the hinge points (32.1, 36.1) on the horizontal tube (31) on the other hand, and the two ends of the horizontal tube (31) are first tilted up, and when the rotating rods (32, 36) rotate past the dead point, the two ends of the horizontal tube (31) are gradually lowered until they are completely folded into a stick or column shape; when unfolding the foldable camp bed, first rotate the unfolded horizontal tube (31) to both sides. The handles (30) on both sides are pushed away, and the cross tube (13) and the transverse cross leg tubes (4, 5, 6, 7, 8, 9) are gradually unfolded. The handle (30) is pressed downward again, and the transverse cross leg tubes (4, 5, 6, 7, 8, 9) and the cross tube (13) are further unfolded. At this time, the unfolded transverse cross leg tubes (7, 8) and the cross tube (13) at both ends move toward both ends. The rotating rods (32, 36) rotate around the hinge points (32.1, 36.1) on the horizontal tube (31) on the one hand, and also rotate around the hinge points (32.2, 36.2) on the transverse cross leg tubes (7, 8) at both ends and the fixed support (33) on the other hand, and lift up the two ends of the horizontal tube (31). When the rotating rods (32, 36) rotate past the dead point, the two ends of the horizontal tube (31) are gradually lowered until the foldable camp bed is fully unfolded.

[0015] Furthermore, the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) can cross each other and touch the ground in the same plane through three groups of hinged plates (11), or can directly cross and hinge to touch the ground in different parallel planes. When the transverse cross leg tubes (4, 5, 6, 7, 8, 9) directly cross and hinge to touch the ground in different parallel planes, the hinged plates (11) may not be used. In this case, the transverse cross leg tubes (5, 6,) and the transverse cross leg tubes (8, 9,) are each in the form of a single tube.

[0016] Furthermore, the rotating rods (32, 36) are divided into a fully clamped rotating rod (32) and a semi-clamped rotating rod (36), and are both T-shaped clamped near the hinge points (32.2, 36.2), so that the folding camp bed can be conveniently and accurately wedged into the guide block (34) after being unfolded. At the same time, the longer contact surface between the rotating rods (32, 36) and the support (33) improves the system rigidity of the folding camp bed connection. The T-shaped clamp at the hinge points (32.2, 36.2) can be a one-piece type or a split type. The one-piece T-shaped clamp has higher strength and rigidity.

[0017] Furthermore, the cross tubes (13) arranged in pairs longitudinally can be configured in multiple groups of hinged forms through the hinges (12), and can be arranged in a form of four groups of cross tubes (13) in full arrangement, or in a form of two groups of cross tubes (13) arranged in parallel on both sides, or in a form of two groups of cross tubes (13) arranged diagonally symmetrically on both sides. Among them, the folding and unfolding of the four groups of cross tubes (13) in full arrangement is the smoothest, and the consumables are less in the form of two groups of cross tubes (13) arranged in parallel on both sides or arranged diagonally symmetrically on both sides, and the cost is lower.

[0018] Furthermore, 1-3 groups of tightening buckles (18) and tightening belts (19, 20) are installed at the upper and lower ends of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed. One end of the tightening belt (19) is fixed to the handle (30) or the guide blocks (34) at both ends of the horizontal tube (3), and the other end of the tightening belt (19) is sewn to the tightening buckle (18). One end of the tightening belt (20) is fixed to the lower part of the transverse cross leg tube (4, 6, 7, 9), and the other end passes through the tightening buckle (18). Similar to the principle of an airline seat belt, the tightening belt (20) that passes through the tightening buckle (18) can be pulled downward to tighten the bed surface of the folding camp bed. Similarly, 1-3 groups of tightening tubes (17) can be hingedly installed on the upper part of the three groups of transverse cross leg tubes (4, 5, 7, 8) of the folding camp bed. The tension tube (17) is provided with a pin groove (17.1) at one end thereof, and a spring clip (35) is installed at the lower part of the three groups of horizontal cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed corresponding to the tension tube (17). In actual operation, the tensioning method of the tension buckle (18) and the tensioning belt (19, 20) can be used in full, or the tensioning method of the tension tube (17) and the lock pin (25) can be used in full, and can also be used alternately. The spring clip (35) is installed so that after the folding camp bed is folded, the tension tube (17) can be placed in the spring clip (35) and stuck.

[0019] Furthermore, the horizontal tube (31) is a thin-walled tube, and its shape can be a rectangular tube, a round tube, an oblate tube, or a semi-oblate tube. The cross section of the horizontal tube (31) given in the foldable camp bed example is a thin-walled semi-oblate tube.

[0020] Furthermore, the hinge (12) can be L-shaped or U-shaped. The L-shaped hinge can make the foldable camp bed fold to the most compact size, while the U-shaped hinge has a higher connection strength.

[0021] The present invention adopts the above technical scheme, and its advantages are: three groups of horizontal cross leg tubes of the folding camp bed are arranged in parallel in pairs and directly touch the ground, so that the system strength and rigidity of the folding camp bed are greatly improved, and the force and load-bearing are also greatly improved; multiple groups of longitudinal cross tube structures and the push-pull tube push-pull telescopic handle and the rotating rod structure at both ends are adopted, so that the folding camp bed can be smoothly folded and unfolded in one go and in one step; the sliding sleeve and the pipe fitting are designed to slide in a V-shaped or T-shaped matching manner, so that the sliding reliability of the pipe fitting using the fabric support groove is improved; the fabric tensioning method of the folding camp bed adopts a convenient adjustable tensioning tube with a locking pin and a tensioning buckle with a tensioning belt for rapid relaxation and tightening adjustment, which solves the problem that the fabric gradually loosens after the folding bed or folding camp bed in the prior art is unfolded due to load and room temperature creep of non-metallic materials; the folding camp bed has advanced design, convenient operation, simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The foldable camp bed of the present invention adopts an open fabric support groove, a riveted hole riveted flat horizontal tube, a push-pull tube and a push-pull telescopic handle, and a fully unfolded axonometric stereoscopic schematic diagram of a full arrangement of four groups of cross tubes.

[0023] Figure 2 The foldable camp bed of the present invention adopts an open fabric support groove, a riveted hole riveted flat horizontal tube, and an axonometric stereoscopic schematic diagram of a semi-folded state of a push-pull tube capable of pushing and pulling a telescopic handle.

[0024] Figure 3 The foldable camp bed of the present invention is an axonometric stereoscopic schematic diagram of a fully folded state in which an open fabric support groove is adopted, a riveted hole riveted plane horizontal tube, and a push-pull tube can push and pull a telescopic handle.

[0025] Figure 4 The present invention is a partially enlarged schematic diagram of the inter-hinged relationship among the folding camp bed, the telescopic handle, the rotating hinge, the horizontal tube, the middle transverse cross leg tube, the push-pull tube and the cross tube.

[0026] Figure 5 The present invention is a foldable camp bed, a partially enlarged schematic diagram of a flat rivet riveted horizontal tube, a sliding sleeve, a reinforcing plate, end transverse cross leg tubes, cross tubes matching each other, a hinged relationship and a tightening method of the tightening tube type.

[0027] Figure 6 The present invention is a foldable camp bed of the present invention, which is a partially enlarged schematic diagram of the hinged relationship between the push-pull tube, the middle hinged plate and the middle transverse cross leg tube after the middle hinged plate and the middle transverse cross leg tube are fixed and hinged.

[0028] Figure 7 The folding camp bed of the present invention adopts a closed fabric support groove and a horizontal tube with a V-shaped or T-shaped groove, a push-pull tube and a telescopic handle, and a fully unfolded axonometric stereoscopic schematic diagram of a full arrangement of four groups of cross tubes.

[0029] Figure 8 The present invention is a folding camp bed, which adopts a closed fabric support groove and a flat horizontal tube, and is a partially enlarged schematic diagram of the hinged and matching relationship between the sliding sleeve, the reinforcing plate, the end transverse cross leg tube and the cross tube.

[0030] Fig. 9 The foldable camp bed of the present invention is a partially enlarged schematic diagram of the hinged and matching relationship between an open fabric support groove, a riveted hole riveted flat horizontal tube, a sliding sleeve, a reinforcing plate, an end transverse cross leg tube and a cross tube.

[0031] Fig.10The present invention is a foldable camp bed, which is a partially enlarged schematic diagram of the hinged and coordinated relationship between the closed fabric support groove and the V-groove horizontal tube, the sliding sleeve, the reinforcing plate, the end transverse cross leg tube and the cross tube.

[0032] Fig.11 The present invention is a foldable camp bed, which is a partially enlarged schematic diagram of the hinged and coordinated relationship between the closed fabric support groove and the horizontal tube of the T-slot, the sliding sleeve, the reinforcing plate, the end transverse cross leg tube and the cross tube.

[0033] Fig.12 The present invention is a foldable camp bed, which adopts a three-side V-groove sliding sleeve.

[0034] Fig.13 The present invention is a foldable camp bed, which adopts a structural schematic diagram of a two-sided symmetrical V-groove sliding sleeve.

[0035] Fig.14 The present invention is a foldable camp bed, which adopts a T-slot sliding sleeve.

[0036] Fig.15 This is a fully unfolded axonometric stereoscopic schematic diagram of the folding camp bed of the present invention, which adopts semi-oval horizontal tubes, fully clamped rotating rods, and 4 groups of cross tubes in full arrangement.

[0037] Fig.16 The foldable camp bed of the present invention is a fully unfolded axonometric stereoscopic schematic diagram of a semi-oval horizontal tube, a semi-clamp-type rotating rod, and two groups of cross tubes arranged in parallel on both sides.

[0038] Fig.17 This is a fully unfolded axonometric stereoscopic schematic diagram of the folding camp bed of the present invention, which adopts semi-oval horizontal tubes, completely clamped rotating rods, and two groups of cross tubes arranged diagonally symmetrically on both sides.

[0039] Fig.18 The present invention is a foldable camp bed, which adopts a semi-flat round horizontal tube and a fully clamped rotating rod in a fully folded state.

[0040] Fig.19 The present invention is a partially enlarged schematic diagram of the foldable camp bed, horizontal tubes, fully clamped rotating rods, end transverse cross leg tubes, cross tubes and supports, guide blocks, and tension tubes assembled with each other and articulated relationships.

[0041] Fig. 20 The present invention is a partially enlarged schematic diagram of the folding camp bed, horizontal tubes, semi-clamp-type rotating rods, end transverse cross leg tubes, cross tubes and supports, guide blocks, and tension tubes assembled with each other and articulated relationships.

[0042] Fig.21 The present invention is a foldable camp bed and a schematic structural diagram of a fully clamped rotating rod.

[0043] Fig. 22 The present invention is a foldable camp bed and a semi-clamp-type rotating rod. DETAILED DESCRIPTION

[0044] See also Figure 1 — Fig.14The folding camp bed comprises: a telescopic handle (1), a rotating hinge (2), a horizontal tube (3), a transverse cross leg tube (4, 5, 6, 7, 8, 9), an intermediate hinge plate (10, 14), a hinge plate (11), a sliding sleeve (15, 23, 26, 27), a reinforcing plate (16), a cross tube (13), a hinge (12), a push-pull tube (21, 22), a top rod (17), a tightening buckle (18), and a tightening belt (19, 20). The three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are directly crossed and touch the ground in pairs. The axial holes (2.1) at both ends of the telescopic handle (1) are hinged to the rotating hinge (2). One end of the horizontal tube (3) is hinged to the rotating hinge (2), and the other end is inserted into the sliding sleeve (15, 23, The horizontal tube (3) is in the horizontal tube (26, 27), and the horizontal tube (3) can slide in the sliding sleeve; the upper part of the transverse cross leg tubes (7, 8) at both ends is fixed with a riveted reinforcement plate (16), and the sliding sleeves (15, 23, 26, 27) are hinged between the transverse cross leg tubes (7, 8) at both ends and the reinforcement plate (16), and the sliding sleeves (15, 23, 26, 27) are pressed by the reinforcement plate (16) to keep the sliding sleeves (15, 23, 26, 27) from separating from the horizontal tube (3), and can be moved around the hinge point (16. 1) rotation; the cross tubes (13) are arranged longitudinally, and after being hinged in pairs at the middle of the cross tubes (13), they are respectively hinged in pairs to the transverse cross leg tubes (4, 5, 6, 7, 8, 9) through hinges (12); the lower ends of the push-pull tubes (21, 22) are hinged to the transverse cross leg tubes (4, 5) or the middle hinge plates (10, 14), and the other ends are hinged to the telescopic handle (1). When folding and unfolding the folding military bed, the telescopic handle (1) can be pulled or pushed to move along the transverse cross leg tubes (4, 5) upper sliding; when the folding camp bed is folded, the telescopic handle (1) is lifted upward or the telescopic handles (1) on both sides are brought close to each other, driving the horizontal tube (3) to also move close to each other. At this time, the transverse cross leg tubes (4, 5, 6, 7, 8, 9) and the cross tube (13) also move in the folding direction. Under the folding action of the cross tube (13), the transverse cross leg tubes (7, 8) at both ends also drive the sliding sleeves (15, 23, 26, 27) to slide inward along the horizontal tube (3). At this time, under the movement of the middle transverse cross leg tubes (4, 5) and the middle hinged plate (10, 14), the push-pull tubes (21, 22) hinged to them push the opposite telescopic handle (1) hinged to them to slide upward. When the telescopic handle (1) slides upward to a certain height, the sliding sleeves (15, 23, 26, 27) are around the hinge point (16.1) rotates, the horizontal tube (3) also rotates downward, tending to be folded, until it is completely folded into a stick or column shape; when unfolding the foldable camp bed, firstly, the horizontal tube (3) is rotated to both sides to unfold, and at the same time, the cross tube (13) and the transverse cross leg tubes (4, 5, 6, 7, 8, 9) are gradually unfolded, and then the telescopic handle (1) is pressed downward to push the push-pull tubes (21, 22) to further unfold the transverse cross leg tubes (4, 5, 6, 7, 8, 9) and the cross tube (13); at this time, the sliding sleeves ((15, 23, 26, 27) slide along the horizontal tube (3) to both ends under the push of the unfolded transverse cross leg tubes (7, 8) and the cross tube (13), thereby lifting the horizontal tube (3) and completely unfolding the foldable camp bed.

[0045] The three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed can cross and touch the ground in pairs in the same plane via the middle hinge plate (10, 14) and the hinge plate (11), or can directly cross and hinge and touch the ground in different parallel planes; when the transverse cross leg tubes (4, 5, 6, 7, 8, 9) directly cross and hinge and touch the ground in different parallel planes, the middle hinge plate (10, 14) and the hinge plate (11) can be omitted, and at this time, the transverse cross leg tubes (5, 6,) and the transverse cross leg tubes (8, 9,) are each in the form of a single tube.

[0046] The cross section of a horizontal tube (3) of a folding camp bed is provided with an open fabric support groove (3.4) or a closed fabric support groove (3.3) for fabric tensioning; wherein the horizontal tube (3) provided with the open fabric support groove (3.4) is also provided with a plurality of riveting holes (3.1), so that the two side surfaces of the horizontal tube (3) can be riveted together in advance, so that the open fabric support groove (3.4) of the horizontal tube (3) will not be deformed under the fabric tensioning force.

[0047] The cross section of the horizontal tube (3) of the folding camp bed can have a flat sliding surface or be provided with 1 to 3 V-shaped grooves (3.2) or T-shaped grooves (3.5). The sliding sleeves (15, 23, 26, 27) matched with the horizontal tube (3) also have corresponding matched V-shaped bosses (23.1, 26.1) or T-shaped bosses (27.1). In this way, the sliding sleeves (15, 23, 26, 27) can slide smoothly along the horizontal tube (3) and will not separate from the horizontal tube (3).

[0048] The lower ends of the push-pull tubes (21, 22) of the foldable camp bed can be hinged to the middle hinge plate (10, 14) or directly hinged to the transverse cross leg tubes (4, 5), and the hinge points (21.1, 22.1) are close to the common hinge points (28) of the middle hinge plate (10, 14) and the transverse cross leg tubes (4, 5); when the foldable camp bed is folded or unfolded, the push-pull tubes (21, 22) can push the telescopic handle (1) upward or pull it downward, so that the telescopic handle (1) slides along the upper part of the transverse cross leg tubes (4, 5); by changing the distance between the hinge point (21.1, 22.1) and the common hinge point (28), the sliding stroke of the telescopic handle (1) can be adjusted, thereby adjusting the smoothness of folding and unfolding the foldable camp bed.

[0049] The cross tubes (13) of the folding camp bed are arranged in pairs longitudinally, and can be configured with multiple groups of hinges through hinges (12), and can be arranged in a full arrangement of 4 groups of cross tubes (13), a parallel arrangement of 2 groups of cross tubes (13) on both sides, or a diagonally symmetrical arrangement of 2 groups of cross tubes (13) on both sides. Among them, the full arrangement of 4 groups of cross tubes (13) is the smoothest to fold and unfold, and the system movement rigidity is the best. The arrangement of 2 groups of cross tubes (13) on both sides in parallel or diagonally symmetrically on both sides requires less consumables and has a lower cost.

[0050] The upper and lower ends of three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are equipped with 1 to 3 groups of tightening buckles (18) and tightening belts (19, 20), one end of the tightening belt (19) is fixed to the telescopic handle (1) or the horizontal tube (3) near the end point where the two ends of the sliding sleeve are unfolded, the other end of the tightening belt (19) is sewn to the tightening buckle (18), and one end of the tightening belt (20) is fixed to the lower part of the transverse cross leg tubes (4, 6, 7, 9), and the other end is passed through the horizontal tube (3) of the telescopic handle (1) or the horizontal tube (3) near the end point where the sliding sleeve is unfolded. Through the tightening buckle (18), similar to the principle of the safety belt of an airline seat, the tightening belt (20) passing through the tightening buckle (18) can be pulled downward to tighten the bed surface of the foldable camp bed; similarly, 1-3 groups of tightening tubes (17) and matching riveted locking pins (25) can also be hingedly installed on the upper part of the three groups of transverse cross leg tubes (4, 5, 7, 8) of the foldable camp bed, and a pin groove (17.1) is opened at one end of the tightening tube (17), and a spring clip (35) is installed on the lower part of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the foldable camp bed corresponding to the tightening tube (17). In actual operation, the tightening method of the tightening buckle (18) and the tightening belt (19, 20) can be used entirely, or the tightening method of the tightening tube (17) and the locking pin (25) can be used entirely, or it can be used alternately. The spring clip (35) is assembled so that after the folding camp bed is folded, the tensioning tube (17) can be placed and stuck in the spring clip (35).

[0051] The hinge (12) of the folding camp bed can be L-shaped or U-shaped. The L-shaped hinge can make the folding camp bed fold to the most compact, while the U-shaped hinge has a higher connection strength.

[0052] See also Fig.15 — Fig.16The folding camp bed comprises: a handle (30), a horizontal tube (31), transverse cross leg tubes (4, 5, 6, 7, 8, 9), a hinge plate (11), a rotating rod (32, 36), a support (33), a guide block (34), a cross tube (13), a hinge (12), a top rod (17), a tightening buckle (18), and a tightening belt (19, 20). The three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are directly crossed and touch the ground in pairs. The two ends of the handle (30) are hinged to the horizontal tube (3). One end of the rotating rod (32, 36) is hinged to the middle part of the horizontal tube (3), and the other end is hinged to the upper part of the transverse cross leg tubes (7, 8) at both ends and the support (33) fixed thereto. The cross tube (13) is arranged longitudinally. The rotating rod (32, 36) can be rotated around the hinge point (32.1) of the horizontal tube (3). When the foldable camp bed is folded, the handle (30) is lifted upward or the handles (30) on both sides are brought closer to each other, which drives the horizontal tube (31) to also move closer to each other. At this time, the transverse cross leg tubes (4, 5, 6, 7, 8, 9) and the cross tube (13) also move in the folding direction. Under the folding action of the cross tube (13), the transverse cross leg tubes (7, 8) at both ends move parallel to the center. The rotating rods (32, 36) hinged to the fixed supports (33) at the upper parts of the transverse cross leg tubes (7, 8) at both ends, on the one hand, rotate around the hinge points (32.2, 36.2) On the one hand, the horizontal tube (31) rotates, and on the other hand, the horizontal tube (31) rotates around the hinge points (32.1, 36.1) on the horizontal tube (31), and the two ends of the horizontal tube (31) are first tilted up. When the rotating rods (32, 36) rotate past the dead point, the two ends of the horizontal tube (31) are gradually lowered until they are completely folded into a stick or column shape. When unfolding the foldable camp bed, first, the horizontal tube (31) is rotated to both sides to unfold and the handles (30) on both sides are pushed away, and at the same time, the cross tube (13) and the transverse cross leg tubes (4, 5, 6, 7, 8, 9) are gradually unfolded, and then the handle (30) is pressed downward, and the transverse cross leg tubes (4, 5, 6, 7, 8, 9) and the cross tube (13) are further unfolded; at this time, the unfolded transverse cross leg tubes (7, 8) and the cross tube (13) move to both ends, the rotating rods (32, 36) rotate around the hinge points (32.1, 36.1) on the horizontal tube (31) on the one hand, and also rotate around the hinge points (32.2, 36.2) on the transverse cross leg tubes (7, 8) and the fixed support (33) at both ends, while lifting the two ends of the horizontal tube (31). When the rotating rods (32, 36) rotate past the dead point, the two ends of the horizontal tube (31) are gradually lowered until the foldable camp bed is fully unfolded.

[0053] The three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed can cross each other and touch the ground in pairs in the same plane through three groups of hinged plates (11), or can directly cross and hinge to touch the ground in different parallel planes. When the transverse cross leg tubes (4, 5, 6, 7, 8, 9) directly cross and hinge to touch the ground in different parallel planes, the hinged plates (11) connected in the middle can be omitted. In this case, the transverse cross leg tubes (5, 6,) and the transverse cross leg tubes (8, 9,) are each in the form of a single tube.

[0054] The rotating rods (32, 36) of the folding camp bed are divided into a fully clamped rotating rod (32) and a semi-clamped rotating rod (36). They are both T-shaped clamped near the hinge points (32.2, 36.2), so that the folding camp bed can be conveniently and accurately wedged into the guide block (34) after unfolding, and the packaging volume can be maintained after folding. At the same time, the longer contact surface between the rotating rods (32, 36) and the support (33) improves the system rigidity of the folding camp bed connection. The T-shaped clamp at the hinge points (32.2, 36.2) can be a connected type or a split type. The connected T-shaped clamp has higher strength and rigidity.

[0055] The cross tubes (13) of the foldable camp bed are arranged in pairs longitudinally, and can be configured in multiple groups of hinged forms through hinges (12), and can be arranged in a full arrangement form of 4 groups of cross tubes (13), a parallel arrangement form of 2 groups of cross tubes (13) on both sides, or a diagonally symmetrical arrangement form of 2 groups of cross tubes (13) on both sides. Among them, the full arrangement form of 4 groups of cross tubes (13) is the smoothest to fold and unfold, and the two groups of cross tubes (13) arranged in parallel on both sides or arranged diagonally symmetrically on both sides have less consumables and lower costs.

[0056] Furthermore, 1-3 groups of tightening buckles (18) and tightening belts (19, 20) are installed at the upper and lower ends of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed. One end of the tightening belt (19) is fixed to the handle (30) or the guide blocks (34) at both ends of the horizontal tube (3), and the other end of the tightening belt (19) is sewn to the tightening buckle (18). One end of the tightening belt (20) is fixed to the lower part of the transverse cross leg tube (4, 6, 7, 9), and the other end passes through the tightening buckle (18). Similar to the principle of an airline seat belt, the tightening belt (20) that passes through the tightening buckle (18) can be pulled downward to tighten the bed surface of the folding camp bed. Similarly, 1-3 groups of tightening tubes (17) can be hingedly installed on the upper part of the three groups of transverse cross leg tubes (4, 5, 7, 8) of the folding camp bed. The tension tube (17) is provided with a pin groove (17.1) at one end thereof, and a spring clip (35) is installed at the lower part of the three groups of horizontal cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed corresponding to the tension tube (17). In actual operation, the tensioning method of the tension buckle (18) and the tensioning belt (19, 20) can be used in full, or the tensioning method of the tension tube (17) and the lock pin (25) can be used in full, and can also be used alternately. The spring clip (35) is installed so that after the folding camp bed is folded, the tension tube (17) can be placed in the spring clip (35) and stuck.

[0057] The horizontal tube (31) of the folding camp bed here is a thin-walled tube, and the outer shape can be a rectangular tube, a round tube, an oblate tube, or a semi-oblate tube. The cross section of the horizontal tube (31) given in this folding camp bed case is a thin-walled semi-oblate tube.

[0058] The hinge (12) of the folding camp bed here can be L-shaped or U-shaped. The L-shaped hinge can make the folding camp bed fold to the most compact, while the U-shaped hinge has a higher connection strength.

[0059] The above is only an implementation scheme of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A folding camp bed, comprising: The telescopic handle (1), the rotating hinge (2), the horizontal tube (3), the transverse cross leg tubes (4, 5, 6, 7, 8, 9), the middle hinge plate (10, 14), the hinge plate (11), the sliding sleeve (15, 23, 26, 27), the reinforcing plate (16), the cross tube (13), the hinge (12), the push-pull tube (21, 22), the tightening tube (17), the tightening buckle (18), the tightening belt (19, 20), characterized in that the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are directly crossed and touch the ground in pairs, the axial holes (2.1) at both ends of the telescopic handle (1) are hinged to the rotating hinge (2), one end of the horizontal tube (3) is hinged to the rotating hinge (2), and the other end is inserted into the sliding sleeve (15, 23, 26, 27) so as to be able to slide in the folding camp bed. The cross tubes (13) are arranged longitudinally, and after being hinged in pairs in the middle, they are respectively hinged in pairs with the cross tubes (4, 5, 6, 7, 8, 9) through hinges (12); the lower ends of the push-pull tubes (21, 22) are hinged with the cross tubes (4, 5) or the middle hinged pieces (10, 14), and the other ends are hinged with the telescopic handle (1). When folding and unfolding the folding military bed, the telescopic handle (1) is pulled or pushed to slide along the upper part of the cross tubes (4, 5).

2. A folding camp bed, comprising: The handle (30), the horizontal tube (31), the transverse cross leg tubes (4, 5, 6, 7, 8, 9), the hinge plate (11), the rotating rod (32, 36), the support (33), the guide block (34), the cross tube (13), the hinge (12), the tightening tube (17), the tightening buckle (18), the tightening belt (19, 20), characterized in that the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are directly crossed and touch the ground in pairs, the two ends of the handle (30) are hinged to the horizontal tube (31), one end of the rotating rod (32, 36) is hinged to the middle part of the horizontal tube (31), and the other end is hinged to the upper part of the transverse cross leg tubes (7, 8) at both ends and the support fixed to it. (33) is hinged, the rotating rods (32, 36) rotate around the hinge points (32.1, 36.1) of the horizontal tube (31) and the hinge points (32.2, 36.2) on the upper parts of the transverse cross leg tubes (7, 8) at both ends, and the guide blocks (34) are fixed on both sides of the horizontal tube. At the hinge points (32.2, 36.2) near the upper parts of the transverse cross leg tubes (7, 8) at both ends, the rotating rods (32, 36) are both T-shaped clamping type. After the foldable camp bed is unfolded, it can be conveniently and accurately wedged into the guide blocks (34). The cross tubes (13) are arranged longitudinally. After being hinged in pairs in the middle, they are respectively hinged in pairs with the transverse cross leg tubes (4, 5, 6, 7, 8, 9) through hinges (12).

3. The folding camp bed according to claim 1 or claim 2, characterized in that: The three groups of transversely crossed leg tubes (4, 5, 6, 7, 8, 9) either cross and touch the ground in pairs in the same plane via the middle hinge plates (10, 14) and the hinge plates (11), or directly cross and hinge and touch the ground in different parallel planes.

4. The folding camp bed according to claim 1 or claim 2, characterized in that: The cross tubes (13) are arranged longitudinally in pairs, through hinges (12) or multiple groups of hinges, or four groups of cross tubes (13) are arranged in full, or two groups of cross tubes (13) are arranged in parallel on both sides, or two groups of cross tubes (13) are arranged diagonally symmetrically on both sides.

5. The folding camp bed according to claim 1 or claim 2, characterized in that: The horizontal tube (3,) and the horizontal tube (31) are rectangular, circular, oblate, or semi-oblate thin-walled tubes, and the thin-walled tube cross section is either provided with an open fabric support groove (3.4) or a closed fabric support groove (3.3). A plurality of riveting holes (3.1) are provided on the horizontal tube (3) provided with the open fabric support groove (3.4); the thin-walled tube cross section is either a simple closed thin-walled tube.

6. The folding camp bed according to claim 1 or claim 2, characterized in that: The upper and lower ends of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed are installed with 1-3 groups of tightening buckles (18) and tightening belts (19, 20). Similarly, 1-3 groups of tightening tubes (17) and matching riveted locking pins (25) are hingedly installed on the upper part of the three groups of transverse cross leg tubes (4, 5, 7, 8) of the folding camp bed, and a pin groove (17.1) is opened at one end of the tightening tube (17). A spring clip (35) is installed at the lower part of the three groups of transverse cross leg tubes (4, 5, 6, 7, 8, 9) of the folding camp bed corresponding to the tightening tube (17).

7. The folding camp bed according to claim 1, characterized in that: The cross section of the horizontal tube (3) has a sliding surface that is either flat or provided with 1-3 V-shaped grooves (3.2) or T-shaped grooves (3.5), and the sliding sleeves (15, 23, 26, 27) that match the horizontal tube (3) also have correspondingly matched V-shaped bosses (23.1, 26.1) or T-shaped bosses (27.1).

8. The folding camp bed according to claim 1, characterized in that: The lower end of the push-pull tube (21, 22) is either hinged to the middle hinge plate (10, 14) or directly hinged to the transverse cross leg tube (4, 5), and its hinge point (21.1, 22.1) is close to the common hinge point (28) of the middle hinge plate (10, 14) and the transverse cross leg tube (4, 5).

9. The folding camp bed according to claim 2, characterized in that: The rotating rods (32, 36) are divided into a fully clamped rotating rod (32) and a semi-clamped rotating rod (36), and both are T-shaped clamped near the hinge points (32.2, 36.2).

10. The folding camp bed according to claim 1 or claim 2, characterized in that: The hinge (12) is either L-shaped or U-shaped.

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