CN106510284B - Folding bed - Google Patents

Abstract

The invention relates to a folding bed. A folding bed, the bed frame of which comprises an upper enclosing frame, bed legs and a bottom support frame. Go up to enclose the frame and include a plurality of frame limit portions of enclosing, be provided with the corner joint between the adjacent frame limit portion of enclosing, enclose frame limit portion and include that first enclose frame pole, second enclose frame pole and limit joint, the first both ends of enclosing the frame pole respectively with angle joint and limit joint rotate to be connected, the second encloses the both ends of frame pole and rotates with another angle joint and limit joint respectively and be connected. The limit joint can also enclose frame pole and second when relatively expanding with both locks at first, and the bottom sprag frame includes chassis seat and bottom stay pole, is provided with the unlocking piece on the chassis seat with moving about, and each limit joint all links to each other with the unlocking piece through the haulage cable, carries to pull the unlocking piece and makes the unlocking piece move on the chassis seat, and then can drive the synchronous unblock of a plurality of limit joints through the haulage cable. The folding bed can realize that the bed frame of the folding bed can be folded when being lifted. The folding operation is simple, and time and labor are saved.

Description

Folding bed

Technical Field

The invention relates to a folding bed.

Background

At present, among the folding bed, the bedstead is mostly through a plurality of member aggregate erection, when using, expandes the member, locks each other between the member that expandes through a plurality of locking mechanical system and forms the whole bedstead that expandes, when needing to transport or draw in, with the bedstead unblock, the member is drawn close folding each other. In the existing folding bed structure, although the structures of a locking mechanism and an unlocking mechanism are simple, the steps of unfolding, locking and folding and unlocking are more, and the efficiency is low. Or the structure of the folding bed is complex, and the folding bed can realize quick unfolding locking and folding unlocking, but the folding bed after folding is larger in volume and incomplete in folding due to the complex structure.

In addition, in the existing folding bed structure, or the locking mechanisms are not related, and the locking/unlocking between the adjacent rod pieces can be completed only by respectively operating the locking mechanisms. Or each locking mechanism and each unlocking mechanism are mutually associated through a complex mechanism, so that synchronous unlocking of all the locking mechanisms is realized, but due to the structure of the bedstead, the distance between the locking mechanisms is long, a plurality of association mechanisms with long strokes are needed for realizing synchronous unlocking of all side joints, the unlocking force needed by the locking mechanisms on the existing bedstead is large, and the unlocking force needed by the locking mechanisms on the bedstead is further increased through traction of the association mechanisms. Therefore, when the side joint of the existing bed frame unlocked synchronously is unlocked and folded, the required unlocking force is too large, and the unlocking is delayed, blocked and unsmooth.

Disclosure of Invention

The invention aims to solve the technical problem of providing a folding bed which has a light structure, a simple folding and unlocking process and small unlocking force.

In order to solve the technical problems, the invention adopts a technical scheme that: a folding bed comprises a bed frame having a folded state and an unfolded state. The bed frame comprises an upper enclosing frame, a plurality of bed legs and a bottom bracing frame, wherein the bed legs are arranged below the upper enclosing frame, the bottom bracing frame is supported among the bed legs, the upper enclosing frame comprises a plurality of enclosing frame edges, corner joints are arranged between the adjacent enclosing frame edges, the enclosing frame edges are connected end to end through the corner joints to form an enclosed annular enclosing frame, two ends of each enclosing frame edge are respectively rotatably connected with the corresponding corner joints, each enclosing frame edge comprises a first enclosing frame rod, a second enclosing frame rod and a side joint for connecting the first enclosing frame rod and the second enclosing frame rod, one end of the first enclosing frame rod is rotatably connected with one corner joint, the other end of the first enclosing frame rod is rotatably connected with the side joint, one end of the second enclosing frame rod, which is far away from the first enclosing frame rod, is rotatably connected with the other corner joint, one end of the second enclosing frame rod, which is close to the first enclosing frame rod, is rotatably connected with the side joint, and the side joint can also lock the first enclosing frame rod and the second enclosing frame rod when the first enclosing frame rod and the second enclosing frame rod are relatively unfolded, the bottom sprag frame includes chassis seat and a plurality of bottom sprag of being connected with the chassis seat rotation, and the one end that the chassis seat was kept away from to each bottom sprag rotates with the footpost that corresponds to be connected, be provided with the deblocking piece on the chassis seat movably, each side joint all links to each other with the deblocking piece through the traction cable, carries and draws the deblocking piece to make the deblocking piece move on the chassis seat, and the deblocking piece motion can be through the synchronous unblock of a plurality of side joints of traction cable pulling.

Preferably, the upper enclosing frame comprises four enclosing frame edges which are connected end to end through corner joints to form a rectangular annular enclosing frame, when the bedstead is in an unfolded state, the first enclosing frame rod and the second enclosing frame rod are respectively unfolded between the corner joints and the side joints, and the first enclosing frame rod and the second enclosing frame rod extend along the same straight line; when the bedstead is folded, the side joint is unlocked, the first enclosing frame rod and the second enclosing frame rod are downwards overturned relative to the corner joint, and the opposite enclosing frame edge parts are mutually closed.

Specifically, the side joint comprises a joint seat, a first connector, a second connector, a swinging piece and a pressure spring, the first connector is fixedly connected with one rod piece of the first frame enclosing rod and the second frame enclosing rod, the second connector is fixedly connected with the other rod piece of the first frame enclosing rod and the second frame enclosing rod, the first enclosing frame rod and the second enclosing frame rod are respectively connected with the joint seat in a rotating way through a first connector and a second connector, the swinging piece is rotationally connected with the first connector, the pressure spring is pressed and installed between the swinging piece and the first connector, the swinging piece is fixedly connected with the traction cable, the side joint has a locking state and an unlocking state, when the side joint is in a locking state, the pressure spring pushes the swinging piece to rotate to abut against the second connector, the first connector and the second connector are locked on the joint seat by the swinging piece and the pressure spring at the same time; when the side joint is in an unlocking state, the swinging piece rotates to open the second connector, and the first connector and the second connector can respectively rotate on the joint seat; the traction rope is pulled to drive the swinging piece to rotate so as to unlock the side joint.

Furthermore, the swinging piece is provided with a protruding part, the front part of the second connector is provided with a notch matched with the protruding part, when the side joint is in a locking state, the pressure spring abuts against the swinging piece, and the protruding part abuts against the notch; when the side joint is in an unlocking state, the protruding part is separated from the notch, and the swinging piece rotates to open the second connector.

Further, the joint seat includes two mounting panels of parallel arrangement and the connecting plate that is used for connecting two mounting panels, the fixed upper portion that sets up at two mounting panels of connecting plate, first connector and second connector stretch into from the right part and the left part of joint seat respectively two mounting panels between the space, first connector and second connector pass through the rivet respectively the riveting on two mounting panels and form first revolute pair and second revolute pair respectively, the swinging member is located in the space between two mounting panels, the preceding lower part of first connector has the installation department of installation swinging member, the swinging member passes through the rivet riveting with the installation department and forms the third revolute pair, the front portion of first connector is located the left side of first revolute pair, the front portion of second connector is located the right side of second revolute pair, the connecting plate keeps off in the top of first connector and second connector and can restrict the connecting plate of first connector and second connector The front portion rotates upward.

Further, the breach is opened towards the right side below of second connector, works as when the bellying supports in the breach, swing piece and pressure spring can restrict the forward portion of first connector and second connector and rotate downwards.

Preferably, the mounting plate is provided with a guide groove, the protruding part of the swinging piece extends into the guide groove, the protruding part can only move along the extending track of the guide groove, and the protruding part and the guide groove are matched to control the moving track of the swinging piece.

Specifically, the unlocking piece is provided with a first position and a second position on the chassis base, when the unlocking piece is located at the first position, the unlocking piece and the traction rope are kept in a loose state, and the side joint can lock the first frame surrounding rod and the second frame surrounding rod; when the unlocking piece is located at the second position, the unlocking piece pulls the traction rope to synchronously unlock the plurality of side joints.

Preferably, still install unblock spanner and connecting piece on the chassis seat, unblock piece slidable is installed on the chassis seat, unblock spanner rotationally installs on the chassis seat, the connecting piece rotates with unblock piece and unblock spanner respectively and is connected, unblock spanner, connecting piece, unblock piece and chassis seat constitute slider-crank mechanism, and it makes the unblock piece make a round trip to pull the unblock spanner and slide the switching position between primary importance and second place to make a round trip on the chassis seat.

Furthermore, the upper portion of unblock spanner is formed with the spanner portion that supplies the people to do all can, the lower part of unblock spanner has the connecting portion of being connected with the connecting piece rotation, connecting portion are hook-shaped, connecting portion have one-way open-ended hook groove, the connecting piece embedding is connected with unblock spanner rotation in the hook groove.

Specifically, the lower part of chassis seat is seted up downwardly extending's spout, the unblock piece is installed in the spout, and the spanner portion of wrenching the unblock spanner back and forth can make the unblock piece slide from top to bottom in the spout.

The connecting piece is crank form, the connecting piece includes left gudgeon, right gudgeon, well axial region and connects left gudgeon and well axial region, auris dextra axle and the connecting axle of well axial region, the axial lead collineation of left gudgeon and right gudgeon just is located the top of well axial region, well axial region is parallel with left gudgeon and auris dextra axle, left gudgeon and auris dextra axle imbed respectively in the hook groove of unblock spanner, well axial region rotates with the unblock piece to be connected.

Further, the bed legs are fixedly arranged below the corner joints, the bed legs extend along the vertical direction, the lower parts of the bed legs are fixedly provided with bottom joints, the bottom support frame is positioned among the bed legs, the bottom support rod is rotatably connected with the bed legs through the bottom joints, and when the bed frame is in an unfolded state, the bottom support rod is unfolded between the chassis base and the bottom joints; when the bedstead is folded, the chassis base is lifted upwards, and the chassis base can drive the bottom support rod to rotate upwards relative to the bottom joint.

Specifically, the first frame enclosing rod, the second frame enclosing rod, the bed legs and the bottom support rod are hollow pipe fittings, and the traction cable penetrates through the first frame enclosing rod, the second frame enclosing rod, the bed legs and the bottom support rod and is connected with the side joints and the unlocking piece.

Preferably, wheels are arranged on the lower portions of a part of the bed legs in the bed frame, the bed frame is lifted to lift the bed legs without the wheels off the ground and push the folding bed, and the folding bed can move on the ground under the driving of the wheels.

Specifically, first frame pole, the second of enclosing encloses frame pole, footpost and bottom stay bar and is hollow pipe fitting, the haulage cable passes second in proper order and encloses frame pole, corner joint, footpost and bottom stay bar, and the both ends of haulage cable are connected with limit joint and unblocking piece respectively.

The terms of orientation such as front, back, left, right, up and down are defined in the normal use (shown) of the folding bed.

The scope of the present invention is not limited to the specific combinations of the above-described features, and other embodiments in which the above-described features or their equivalents are arbitrarily combined are also intended to be encompassed. For example, the above features and the technical features (but not limited to) having similar functions disclosed in the present application are mutually replaced to form the technical solution.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the unlocking piece is connected with the side joints through the traction rope, synchronous unlocking of the side joints is achieved by pulling the unlocking piece, and one of the bed frames of the folding bed is lifted and folded. Adopt swing piece and pressure spring with first connector and second connector locking simultaneously, pull the haulage cable and can easily make the limit joint unblock with swing piece pulling and second connector separation, simple structure and ingenious, the power of unblock is little, the unblock is smooth and easy, low in production cost. The unlocking piece is operated to switch positions back and forth by adopting a crank slider mechanism consisting of the unlocking piece, the connecting piece, the unlocking piece and the chassis base so as to realize synchronous unlocking of a plurality of side joints. The folding operation is simple, and time and labor are saved. The folding is realized by closing the opposite edge parts of the upper enclosing frame, the first enclosing frame rod and the second enclosing frame rod in the folded upper enclosing frame, the bed legs and the bottom support rods are closed together, and the folded folding bed is small in size and convenient to transport and carry.

Drawings

FIG. 1 is a schematic perspective view of the folding bed of the present invention in an unfolded state;

FIG. 2 is a schematic perspective view of the folding bed of the present invention in a folded state;

FIG. 3 is a front view of the side joint;

FIG. 4 is a top view of the side joint;

FIG. 5 is a left side view of the side joint;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is an exploded view of the side joint;

FIG. 8 is a front view of the chassis base structure with the unlocking member in a first position;

FIG. 9 is a left side view of the chassis base structure with the unlocking member in the first position;

FIG. 10 is a top view of the chassis base structure with the unlocking member in the first position;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 8;

FIG. 12 is a front view of the chassis base structure with the unlocking member in a second position;

FIG. 13 is a left side view of the chassis base structure with the unlocking member in the second position;

FIG. 14 is a top view of the chassis base structure with the unlocking member in the second position;

FIG. 15 is a cross-sectional view C-C of FIG. 12;

FIG. 16 is an exploded view of the chassis base structure;

wherein: 1. an upper enclosure frame; 2. bed legs; 3. a bottom bracket; 4. the edge part of the surrounding frame; 5. a corner joint; 6. a first frame enclosing rod; 7. a second frame enclosing rod; 8. a bottom stay; 9. a traction cable; 10. a base joint; 11. a wheel; 100. a side joint; 101. a joint seat; 102. a first connector; 103. a second connector; 104. a swinging member; 105. compressing the spring; 106. a boss portion; 107. a notch; 108. mounting a plate; 109. a connecting plate; 110. an installation part; 111. a first rotating pair; 112. a second revolute pair; 113. a third revolute pair; 114. a guide groove; 115. a limiting member; 116. mounting grooves; 200. a chassis base; 201. unlocking the lock; 202. unlocking the wrench; 203. a connecting member; 204. a wrench part; 205. a connecting portion; 206. a hook groove; 207. a chute; 208. a left trunnion; 209. a right trunnion; 210. a middle shaft portion; 211. a connecting shaft; 212. a tubular portion; 213. installing a shaft; 214. mounting grooves; 215. a kidney-shaped hole; 216. and the shaft hole.

Detailed Description

As shown in fig. 1 and 2, a folding bed according to the present invention includes a frame having a folded state and an unfolded state. The bed frame comprises an upper enclosing frame 1, a plurality of bed legs 2 arranged below the upper enclosing frame 1 and a bottom support frame 3 supported among the plurality of bed legs 2.

The upper surrounding frame 1 comprises a plurality of surrounding frame edges 4, angle joints 5 are arranged between the adjacent surrounding frame edges 4, and the surrounding frame edges 4 are connected end to end through the angle joints 5 to form a closed annular surrounding frame. In this embodiment, the upper frame 1 includes four frame surrounding portions 4, and the four frame surrounding portions 4 are connected end to end by four corner joints 5 to form a rectangular ring-shaped frame. Two ends of the surrounding frame edge part 4 are respectively connected with the corresponding corner joints 5 through pivot rotation. The frame surrounding part 4 comprises a first frame surrounding rod 6, a second frame surrounding rod 7 and a side joint 100 for connecting the first frame surrounding rod 6 and the second frame surrounding rod 7. One end of the first frame enclosing rod 6 is rotatably connected with one corner joint 5, the other end of the first frame enclosing rod is rotatably connected with one side joint 100, one end of the second frame enclosing rod 7, which is far away from the first frame enclosing rod 6, is rotatably connected with the other corner joint 5, and one end of the second frame enclosing rod, which is close to the first frame enclosing rod 6, is rotatably connected with the side joint 100. The side joint 100 is also capable of locking the first and second frame rails 6 and 7 when they are relatively unfolded.

In this embodiment, four corner joints 5 are provided for the bed legs 2. The bed legs 2 are fixedly arranged below the corner joints 5, the bed legs 2 extend along the vertical direction, and the lower parts of the bed legs 2 are fixedly provided with bottom joints 10. Wheels 11 are arranged on the lower portions of a part of the bed legs 2 in the bed frame, and specifically, the wheels 11 are arranged on the lower portions of two adjacent bed legs 2 in the four bed legs 2. The bed frame is lifted to lift the bed legs 2 without the wheels 11 off the ground and push the folding bed, and the folding bed can move on the ground under the driving of the wheels 11.

The bottom bracket 3 is positioned among the four bed legs 2. The bottom bracket 3 comprises a chassis base 200 and four bottom support rods 8 which are rotatably connected with the chassis base 200. One end of each bottom supporting rod 8 far away from the chassis base 200 is rotatably connected with the corresponding bed leg 2 through a bottom joint 10. An unlocking piece 201 is movably arranged on the chassis base 200. Each side joint 100 is connected with an unlocking piece 201 through a traction cable 9, the unlocking piece 201 is pulled to enable the unlocking piece 201 to move on the chassis base 200, and the unlocking piece 201 can move to pull a plurality of side joints 100 through the traction cable 9 to unlock synchronously.

The first frame enclosing rod 6, the second frame enclosing rod 7, the bed legs 2 and the bottom support rod 8 are hollow pipe fittings, the traction cable 9 sequentially penetrates through the second frame enclosing rod 7, the corner joints 5, the bed legs 2 and the bottom support rod 8, and two ends of the traction cable 9 are respectively connected with the side joints 100 and the unlocking piece 201

As shown in fig. 3 to 7, the side joint 100 includes a joint base 101, a first connector 102, a second connector 103, a swinging member 104, and a compression spring 105. The first connector 102 is fixedly connected to one of the first frame surrounding rod 6 and the second frame surrounding rod 7, and the second connector 103 is fixedly connected to the other of the first frame surrounding rod 6 and the second frame surrounding rod 7.

In this embodiment, the joint seat 101 is a folding plate. Specifically, the joint base 101 includes two mounting plates 108 arranged in parallel and a connecting plate 109 for connecting the two mounting plates 108, and the connecting plate 109 is fixedly arranged on the upper portions of the two mounting plates 108.

As shown in fig. 6, the first connector 102 and the second connector 103 extend into the space between the two mounting plates 108 from the right and left portions of the joint base 101, respectively. The first connecting head 102 is riveted to the two mounting plates 108 by rivets to form a first revolute pair 111. The second connecting head 103 is riveted to the two mounting plates 108 by rivets to form a second revolute pair 112. The pendulum 104 is located in the space between the two mounting plates 108. The front lower part of the first joint 102 has a mounting part 110 for mounting the swinging member 104, and the swinging member 104 and the mounting part 110 are riveted to form a third revolute pair 113. The third revolute pair 113 is located below the first revolute pair 111 and the second revolute pair 112.

The front part of the first connector 102 is located at the left side of the first rotating pair 111, the front part of the second connector 103 is located at the right side of the second rotating pair 112, and the connecting plate 109 is blocked above the first connector 102 and the second connector 103 and can limit the upward rotation of the front parts of the first connector 102 and the second connector 103. The compression spring 105 is mounted in compression between the oscillating member 104 and the front portion of the first joint 102.

The oscillating member 104 has a projection 106 thereon. This embodiment is a boss 106 formed by riveting a rivet on the oscillating member. The front portion of the second connector 103 has a notch 107 for engaging with the protrusion 106. The notch 107 is open toward the lower right of the second connector 103.

The upper portion of the first connection head 102 is provided with a mounting groove 116, and the mounting groove 116 extends along the left-right direction. The traction cable 9 is laid along the guide of the installation groove 116, and the end of the traction cable 9 is fixedly connected with the swinging piece 104.

The side knuckle 100 has a locked state and an unlocked state. When the side joint 100 is in a locked state, the pressure spring 105 pushes the swinging member 104 to rotate, the protrusion 106 abuts against the notch 107, and the swinging member 104 and the pressure spring 105 can limit the front portions of the first connector 102 and the second connector 103 to rotate downward, that is, the first connector 102 and the second connector 103 are locked on the joint seat 101 by the swinging member 104 and the pressure spring 105 and cannot rotate relative to the joint seat 101.

When limit joint 100 is in the unblock state, swing 104 rotates, bellying 106 and breach 107 separation, swing 104 rotates and lets out second connector 103, at this moment, first connector 102 and second connector 103 can rotate respectively on joint seat 101, specifically speaking, the front portion of first connector 102 can be rotated downwards relatively first revolute pair 111, the front portion of second connector 103 can be rotated downwards relatively second revolute pair 112. Pulling the traction rope 9 can drive the swinging piece 104 to rotate so as to unlock the side joint 100.

A limiting member 115 is further installed between the two installation plates 108, and the limiting member 115 is located on the left side of the installation portion 110 of the first connection head 102. In this embodiment, the two mounting plates 108 are provided with rivets to form the limiting members 115. When the side joint 100 is in the locked state, the stopper 115 contacts against the mounting portion 110 of the first connection head 102. Thus, the limiting member 115 can limit the movement of the first connector 102, and prevent the first connector 102 from rotating beyond the position.

In this embodiment, the mounting plate 108 further has a guide slot 114. The projection 106 of the oscillating element 104 projects into the guide groove 114 such that the projection 106 can only move along the path of the guide groove 114. Thus, the protrusion 106 and the guide groove 114 cooperate to control the movement locus of the swinging member 104. Ensuring the correct fit of the oscillating piece 104 with the second connection head 103.

As shown in fig. 8 to 16, an unlocking wrench 202 and a connector 203 are further mounted on the chassis base 200. In this embodiment, the unlocking member 201 is slidably installed on the chassis base 200. The unlocking wrench 202 is rotatably installed on the chassis base 200. The connecting piece 203 is respectively connected with the unlocking piece 201 and the unlocking wrench 202 in a rotating way. The unlocking wrench 202, the connecting piece 203, the unlocking piece 201 and the chassis base 200 form a crank-slider mechanism.

Specifically, the upper portion of the chassis base 200 is provided with a mounting groove 214, the lower portion of the chassis base 200 is provided with a sliding groove 207 extending downwards, and the sliding groove 207 is communicated with the mounting groove 214. The lower portion of the illustrated chassis base 200 has a downwardly extending tubular portion 212, the illustrated slide groove 207 is formed inside the tubular portion 212, an upper portion of the slide groove 207 communicates with the mounting groove 214, and the lower portion forms an opening at a lower end of the tubular portion 212.

The unlocking wrench 202 is rotatably disposed on the chassis base 200 through a mounting shaft 213. Specifically, a wrench portion 204 for a user to exert force is formed at an upper portion of the unlocking wrench 202, the wrench portion 204 is arc-shaped, a through hole for a finger to hook is formed in the wrench portion 204, and a user can hook the through hole to operate the unlocking wrench 202. The middle lower portion of the unlocking wrench 202 is provided with a shaft hole 216 matched with the mounting shaft 213. The mounting shaft 213 is respectively inserted into the mounting groove 214 of the chassis base 200 and the shaft hole 216 of the unlocking wrench 202, and the unlocking wrench 202 can rotate around the mounting shaft 213. The lower portion of the unlocking wrench 202 has a coupling portion 205 rotatably coupled to the coupling member 203, the coupling portion 205 has a hook shape, and the coupling portion 205 has a hook groove 206 opened in one direction. The connection portion 205 of the unlocking wrench 202 is located in the installation groove 214, and the wrench portion 204 of the unlocking wrench 202 is exposed out of the installation groove 214.

The connecting piece 203 is crank-shaped. Specifically, the connecting member 203 includes a left trunnion 208, a right trunnion 209, a middle shaft 210, and a connecting shaft 211 connecting the left trunnion 208 and the middle shaft 210, and the right trunnion 209 and the middle shaft 210. The axes of the left trunnion 208 and the right trunnion 209 are collinear and are located above the middle shaft 210, and the middle shaft 210 is parallel to the left trunnion 208 and the right trunnion 209. The left trunnion 208 and the right trunnion 209 are respectively inserted into the hook groove 206 of the unlocking wrench 202 to rotatably connect the connecting member 203 with the unlocking wrench 202. The unlocking piece 201 is provided with a waist-shaped hole 215, and the middle shaft part 210 penetrates through the waist-shaped hole 215 and is rotatably connected with the unlocking piece 201.

The unlocking member 201 has a first position and a second position on the chassis base 200.

As shown in fig. 8-11, the unlocking member 201 is in the first position. At this time, the wrench portion 204 of the unlocking wrench 202 is attached to the upper portion of the chassis base 200, the unlocking member 201 slides upward in the slide groove 207, and the kidney hole 215 of the unlocking member 201 rises to the upper portion of the slide groove 207. The unlocking piece 201 and the traction cable 9 are kept in a loose state. At this time, the locking mechanism 200 can lock the rods connected to each other.

As shown in fig. 12-15, the unlocking member 201 is in the second position. At this time, the wrench portion 204 of the unlocking wrench 202 tilts upward, the unlocking member 201 slides downward in the sliding slot 207, and the kidney-shaped hole 215 of the unlocking member 201 descends to the middle-lower portion of the sliding slot 207. The unlocking member 201 pulls the pulling rope 9 to unlock the plurality of locking mechanisms 200 simultaneously.

The wrench portion 204 of the unlocking wrench 202 is rotated back and forth on the chassis base 200, and the unlocking member 201 slides up and down in the sliding groove 207 under the action of the crank slider mechanism, that is, the unlocking member 201 switches positions back and forth between the first position and the second position.

When the bedstead is in the unfolding state, the first frame enclosing rod 6 and the second frame enclosing rod 7 are respectively unfolded between the corner joint 5 and the side joint 100, and the first frame enclosing rod 6 and the second frame enclosing rod 7 extend along the same straight line. The side joint 100 is in a locked state, i.e. the side joint 100 locks the first frame rail 6 and the second frame rail 7 to the joint seat 101. At this time, the first connector 102 rotates to a direction extending approximately in the horizontal direction, and the mounting portion 110 abuts against the limiting member 115. Second connector 103 rotates to the direction that is nearly extending at the horizontal direction pressure spring 105 supports swinging member 104 and rotates to the direction that is close to second connector 103, bellying 106 supports into in the breach 107, swinging member 104 supports second connector 103, and first connector 102 and second connector 103 are all locked this moment, unable rotation. In addition, the bottom stay 8 is flattened between the chassis base 200 and the bottom joint 10. The unlocking member 201 is in the first position.

When the bedstead is folded, the unlocking wrench 202 on the chassis base 200 is lifted upwards, the unlocking piece 201 moves downwards to the second position under the action of the slider-crank mechanism, the unlocking piece 201 pulls the traction cable 9, the traction cable 9 drives the swinging piece 104 to rotate rightwards, the swinging piece 104 abuts against the pressure spring 105, the pressure spring 105 contracts, and the protrusion 106 slides out of the notch 107 and is separated from the notch 107. The side joint 100 is unlocked, the first surrounding frame rod 6 and the second surrounding frame rod 7 are turned downwards relative to the corner joint 5, and the opposite surrounding frame edge parts 4 are close to each other. Meanwhile, the chassis base 200 can drive the bottom brace 8 to rotate upward relative to the bottom joint 10.

In the present invention, the protrusion 106 of the swinging member 104 is locked with the notch 107 of the second connecting head 103. The unlocking force required when the joint mechanism 100 is unlocked is very small, the unlocking is smooth, and the cost is low. The unlocking wrench 202 is operated to enable the unlocking piece 3 to switch positions back and forth to synchronously unlock the plurality of side joints 100 by adopting a crank slider mechanism consisting of the unlocking wrench 202, the connecting piece 203, the unlocking piece 201 and the chassis base 200. The folding operation is simple, the folding bed can be carried and folded, and time and labor are saved. The folded upper enclosing frame 1 has the advantages that the opposite enclosing frame edge parts 4 are closed, the first enclosing frame rod 6 and the second enclosing frame rod 7 are folded, the bed legs 8 and the bottom support rods 8 are closed together, and the folded folding bed is small in size and convenient to transport and carry.

As described above, the present invention has been explained fully in accordance with the gist of the present invention, but the present invention is not limited to the above-described examples and the implementation method. A practitioner of the related art can make various changes and implementations within a range allowed by the technical idea of the present invention.

Claims (15)

1. A folding bed comprising a frame having a folded position and an unfolded position, characterized in that: the bedstead comprises an upper enclosing frame (1), a plurality of bed legs (2) arranged below the upper enclosing frame (1) and a bottom support frame (3) supported between the bed legs (2), the upper enclosing frame (1) comprises a plurality of enclosing frame edge parts (4), corner joints (5) are arranged between the adjacent enclosing frame edge parts (4), the enclosing frame edge parts (4) are connected end to end through the corner joints (5) to form a closed annular enclosing frame, two ends of each enclosing frame edge part (4) are respectively and rotatably connected with the corresponding corner joints (5), each enclosing frame edge part (4) comprises a first enclosing frame rod (6), a second enclosing frame rod (7) and a corner joint (100) connected with the first enclosing frame rod (6) and the second enclosing frame rod (7), one end of the first enclosing frame rod (6) is rotatably connected with one corner joint (5), the other end of the second enclosing frame rod (7) is rotatably connected with the corner joint (100), and one end, far away from the first enclosing frame rod (6), of the second enclosing frame rod (7), is rotatably connected with the corner joint (5) The movable connection, the one end that is close to first surrounding frame pole (6) rotates with side joint (100) to be connected, side joint (100) can also be at first surrounding frame pole (6) and second surrounding frame pole (7) and lock both when expanding relatively, bottom bracket (3) include chassis seat (200) and a plurality of and chassis seat (200) rotate the bottom stay (8) of being connected, the one end that chassis seat (200) were kept away from in each bottom stay (8) rotates with corresponding footpost (2) to be connected, be provided with unlocking piece (201) on chassis seat (200) movably, each side joint (100) all link to each other with unlocking piece (201) through haulage cable (9), it makes unlocking piece (201) move on chassis seat (200) to pull unlocking piece (201), unlocking piece (201) motion can pull a plurality of side joints (100) through haulage cable (9) and unblock in step,

wherein, the side joint (100) comprises a joint seat (101), a first connector (102), a second connector (103), a swinging piece (104) and a pressure spring (105), the first connector (102) is fixedly connected with one rod piece in a first surrounding frame rod (6) and a second surrounding frame rod (7), the second connector (103) is fixedly connected with the other rod piece in the first surrounding frame rod (6) and the second surrounding frame rod (7), the first surrounding frame rod (6) and the second surrounding frame rod (7) are respectively and rotatably connected with the joint seat (101) through the first connector (102) and the second connector (103), the swinging piece (104) is rotatably connected with the first connector (102), the pressure spring (105) is pressed and installed between the swinging piece (104) and the first connector (102), the swinging piece (104) is fixedly connected with the traction cable (9), the side joint (100) has a locking state and an unlocking state, when the side joint (100) is in a locked state, the pressure spring (105) pushes the swinging piece (104) to rotate to abut against the second connector (103), and the first connector (102) and the second connector (103) are locked on the joint seat (101) by the swinging piece (104) and the pressure spring (105) at the same time; when the side joint (100) is in an unlocking state, the swinging piece (104) rotates to open the second connector (103), and the first connector (102) and the second connector (103) can rotate on the joint seat (101) respectively; pulling the traction rope (9) can drive the swinging piece (104) to rotate so as to unlock the side joint (100).

2. A folding bed as claimed in claim 1, wherein: the upper enclosing frame (1) comprises four enclosing frame edge parts (4), the four enclosing frame edge parts (4) are connected end to end through corner joints (5) to form a rectangular annular enclosing frame, when the bedstead is in an unfolded state, a first enclosing frame rod (6) and a second enclosing frame rod (7) are respectively unfolded between the corner joints (5) and the side joints (100), and the first enclosing frame rod (6) and the second enclosing frame rod (7) extend along the same straight line; when the bedstead is folded, the side joints (100) are unlocked, the first frame enclosing rod (6) and the second frame enclosing rod (7) are downwards overturned relative to the corner joints (5), and the opposite frame enclosing edge parts (4) are mutually closed.

3. A folding bed as claimed in claim 1, wherein: the swinging piece (104) is provided with a protruding part (106), the front part of the second connector (103) is provided with a notch (107) matched with the protruding part (106), when the side joint (100) is in a locking state, the pressure spring (105) props against the swinging piece (104), and the protruding part (106) props into the notch (107); when the side joint (100) is in an unlocking state, the protruding part (106) is separated from the notch (107), and the swinging piece (104) rotates to open the second connector (103).

4. A folding bed as claimed in claim 3, wherein: the joint seat (101) comprises two parallel mounting plates (108) and a connecting plate (109) used for connecting the two mounting plates (108), the connecting plate (109) is fixedly arranged on the upper portions of the two mounting plates (108), the first connecting head (102) and the second connecting head (103) respectively extend into a space between the two mounting plates (108) from the right portion and the left portion of the joint seat (101), the first connecting head (102) and the second connecting head (103) are respectively riveted on the two mounting plates (108) through rivets and respectively form a first rotating pair (111) and a second rotating pair (112), the swinging piece (104) is located in the space between the two mounting plates (108), the front lower portion of the first connecting head (102) is provided with a mounting portion (110) for mounting the swinging piece (104), and the swinging piece (104) and the mounting portion (110) are riveted through rivets to form a third rotating pair (113), the front part of the first connector (102) is located on the left side of the first rotating pair (111), the front part of the second connector (103) is located on the right side of the second rotating pair (112), and the connecting plate (109) is blocked above the first connector (102) and the second connector (103) and can limit the upward rotation of the front parts of the first connector (102) and the second connector (103).

5. A folding bed according to claim 4, characterized in that: the notch (107) is opened towards the lower right side of the second connector (103), and when the protruding portion (106) abuts into the notch (107), the swinging piece (104) and the pressure spring (105) can limit the downward rotation of the front portions of the first connector (102) and the second connector (103).

6. A folding bed according to claim 4, characterized in that: seted up guide way (114) on mounting panel (108), bellying (106) of swinging member (104) stretch into in guide way (114), bellying (106) can only follow the extension orbit motion of guide way (114), bellying (106) and guide way (114) cooperation can be controlled the motion orbit of swinging member (104).

7. A folding bed as claimed in claim 1, wherein: the unlocking piece (201) is provided with a first position and a second position on the chassis base (200), when the unlocking piece (201) is located at the first position, the unlocking piece (201) and the traction cable (9) are kept in a loose state, and the side joint (100) can lock the first frame enclosing rod (6) and the second frame enclosing rod (7); when the unlocking piece (201) is located at the second position, the unlocking piece (201) pulls the traction rope (9) to enable the side joints (100) to be unlocked synchronously.

8. The folding bed of claim 7, wherein: still install unblock spanner (202) and connecting piece (203) on chassis seat (200), install on chassis seat (200) unblock piece (201) slidable, unblock spanner (202) rotationally install on chassis seat (200), connecting piece (203) rotate with unblock piece (201) and unblock spanner (202) respectively and are connected, unblock spanner (202), connecting piece (203), unblock piece (201) and chassis seat (200) constitute slider-crank mechanism, and it makes unblock piece (201) make the switching position that makes a round trip to slide between first position and second position to pull back unblock spanner (202) on chassis seat (200).

9. A folding bed as claimed in claim 8, wherein: the upper portion of unblock spanner (202) is formed with spanner portion (204) that supplies the people to do all can, the lower part of unblock spanner (202) has with connecting piece (203) rotation connection's connecting portion (205), connecting portion (205) are hook-shaped, connecting portion (205) have one-way open-ended hook groove (206), connecting piece (203) imbeds in hook groove (206) and is connected with unblock spanner (202) rotation.

10. A folding bed as claimed in claim 8, wherein: the lower part of the chassis base (200) is provided with a sliding groove (207) extending downwards, the unlocking piece (201) is installed in the sliding groove (207), and the wrench part (204) of the unlocking wrench (202) is wrenched back and forth to enable the unlocking piece (201) to slide up and down in the sliding groove (207).

11. A folding bed as claimed in claim 9, wherein: connecting piece (203) is the crank form, connecting piece (203) include left trunnion (208), right trunnion (209), well axial region (210) and connect connecting axle (211) of left trunnion (208) and well axial region (210), right trunnion (209) and well axial region (210), the axial lead collineation of left trunnion (208) and right trunnion (209) and be located the top of well axial region (210), well axial region (210) are parallel with left trunnion (208) and right trunnion (209), left trunnion (208) and right trunnion (209) imbed respectively in hook groove (206) of unblock spanner (202), well axial region (210) rotate with unblock piece (201) and are connected.

12. A folding bed as claimed in claim 1, wherein: the bed legs (2) are fixedly arranged below the corner joints (5), the bed legs (2) extend in the vertical direction, the lower parts of the bed legs (2) are fixedly provided with bottom joints (10), the bottom support frame (3) is positioned among the bed legs (2), the bottom support rods (8) are rotatably connected with the bed legs (2) through the bottom joints (10), and when the bed frame is in an unfolded state, the bottom support rods (8) are unfolded between the chassis base (200) and the bottom joints (10); when the bedstead is folded, the chassis base (200) is lifted upwards, and the chassis base (200) can drive the bottom brace rod (8) to rotate upwards relative to the bottom joint (10).

13. A folding bed as claimed in claim 1, wherein: the first frame enclosing rod (6), the second frame enclosing rod (7), the bed legs (2) and the bottom supporting rod (8) are hollow pipe fittings, and the traction rope (9) penetrates through the first frame enclosing rod (6), the second frame enclosing rod (7), the bed legs (2) and the bottom supporting rod (8) and is connected with the side joint (100) and the unlocking piece (201).

14. A folding bed as claimed in claim 1, wherein: wheels (11) are arranged on the lower portions of a part of the bed legs (2) in the bed frame, the bed frame is lifted to enable the bed legs (2) which are not provided with the wheels (11) to be lifted off the ground and push the folding bed, and the folding bed can move on the ground under the driving of the wheels (11).

15. A folding bed as claimed in claim 1, wherein: first enclose frame pole (6), second and enclose frame pole (7), footpost (2) and bottom stay (8) and be hollow pipe fitting, draw cable (9) pass the second in proper order and enclose frame pole (7), angle joint (5), footpost (2) and bottom stay (8), and the both ends of drawing cable (9) are connected with limit joint (100) and deblocking piece (201) respectively.

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