WO2017067090A1

WO2017067090A1 - Turnover apparatus for turnover folding bed

Info

Publication number: WO2017067090A1
Application number: PCT/CN2016/000238
Authority: WO
Inventors: 林永忠
Original assignee: 林永忠
Priority date: 2015-10-19
Filing date: 2016-05-03
Publication date: 2017-04-27
Also published as: CN105167453B; CN105167453A

Abstract

A turnover apparatus for a turnover folding bed, comprising: an upright frame, support modules (2), and rotating modules (3), wherein the upright frame is a frame structure having a left side plate (1) and a right side plate; there are both two sets of support modules (2) and two sets of rotating modules (3), and each set is separately mounted on the inner side surfaces of the left side plate (1) and the right side plate; the left side plate (1) and the right side plate are identical in structure; the inner side surface of the left side plate (1) is provided with inwardly-recessed slots (11) used for mounting the support modules (2) and the rotating modules (3). By means of structural design, the turnover apparatus makes the stress of a bed board dynamically balanced, i.e., the bed board can stop at any position during a turnover process, and enables the bend board to be folded or unfolded by applying a very small force. Besides, the design enables the stress to be balanced at any point, thereby ensuring the safety in use. Furthermore, the design of auxiliary components, such as a curved guiding means (231) and a guiding rod (12), limits the motion trajectory of the turnover apparatus, thereby ensuring the working stability of the turnover apparatus.

Description

Inverting device for flipping folding bed

Technical field

The invention relates to the field of furniture, in particular to a turning device for flipping a folding bed.

Background technique

In the existing folding bed, most of them are multi-section folding and folding structure. This structure is troublesome to open and close, and when used again, it is very troublesome to reorganize the bed. Although the whole flip folding bed is also available on the market, it can really meet the requirements of use. The reason is that, on the one hand, the weight of the bed itself is heavier, and the overall turning needs to push the force similar to the weight of the bed to make it flip. The crowd is very difficult to fold, and it also needs support and it is easy to be dangerous. On the other hand, it is a technical problem that needs to be solved by fixing a bed with a large weight vertically in one place. The design of the folding bed itself is to save space. If it is necessary to load more external driving force and supporting force, and set a larger and more stable seat to solve the problem of using the flip folding bed, it is meaningless. Therefore, designing a compact turning mechanism with large pushing and supporting power is a technical problem that the industry urgently needs to solve.

Summary of the invention

In order to overcome the deficiencies of the prior art, the present invention provides an inverting device for flipping a folding bed. The turning device has a large pushing and supporting power, and the user only needs to gently push the bed board to realize the folding and lowering of the bed board, and the volume is small, and the occupied space is similar to the volume of the bed board.

The technical solution of the present invention to solve the technical problem is: designing a turning device for flipping a folding bed, comprising a stand, a supporting module and a rotating module; the stand is a frame structure with a left side plate and a right side plate, The support module and the rotating module are two sets, each set is respectively installed on the inner side surface of the left side plate and the right side plate of the vertical frame, and the left side plate and the right side plate have the same structure; the inner side surface of the left side plate The inner groove channel is used for mounting the support module and the rotation module; wherein the inner groove track is composed of two segments, and the upper segment is a trapezoidal groove parallel to the upper and lower bottom edges, and the length of the left side is longer than the right side a long length, the lower section is an arcuate groove extending from the right side of the trapezoidal groove to the lower left and finally connected to the left side of the trapezoidal groove; the arc The outer peripheral surface of the groove is cut away by a layer, and a guide rod is installed at an intermediate position of the bottom portion of the outer peripheral surface of the arc groove. The lower end of the guide rod is a shaft connection, and the upper end is provided with a guide wheel, and the left side thereof passes the spring and the arc. The groove is cut away from the left side elastic connection of the bottom of the outer peripheral surface; the curved edge of the arc groove is a convex curved guide rail extending outward in the middle;

The support module includes a gas strut mounting plate, a gas strut and a joint, and the gas strut mounting plate is movably mounted on a top of the inner groove track through a pin; the fixed end of the gas brace is installed at a lower end of the gas brace plate. The movable end is fixed on the joint; the joint is generally in the shape of a spatula, the front part is a horizontal palm shape at the front end, and the gas support hole is arranged on the movable end of the gas support, and the rear half has a central position The truncated cone structure of the through hole of the joint has a crescent-shaped positioning groove centered on the center of the through hole of the joint on the truncated cone structure facing the front half of the joint through hole, and the front half and the rear half of the joint are connected together, and the whole casting is formed. ;

The joint is mounted with a curved surface guiding device, and the curved surface guiding device comprises a mounting piece, a connecting piece and a guiding wheel. The mounting piece is fixed to the right edge of the joint by screws, and the connecting piece is vertically fixed on the left side of the mounting piece. In the lower end position, the guide wheels are two, and are vertically fixedly mounted on the left and right sides of the connecting piece, and the distance between the two guiding wheels matches the size of the convex curved guiding rail on the inner groove track;

The rotating module comprises a main rotating arm, a positioning rod, a bearing seat, a bearing, a torsion bushing, a bed mounting bushing and a bearing mounting plate; the bearing mounting plate is mounted on a left outer side edge of the arc groove of the inner groove track And fixed to the vertical frame by screws; the bearing seat is fixed on the bearing mounting plate by screws, the bearing sequentially passes through the bearing seat, the torsion bushing and the bed plate mounting sleeve; the main rotating arm is fixed at one end of the bearing seat The other end is connected with the joint through the shaft pin; the middle end of the main rotating arm and the joint has a large one and a small two mounting holes in the middle, wherein the large mounting hole matches the joint through hole on the joint, The two are connected by a shaft pin, and the small mounting hole is located in the orientation of the large mounting hole toward the other end of the main arm. The positioning rod is fixed at one end in the small mounting hole, and when the main arm is connected with the joint, the positioning rod The other end is located inside the crescent-shaped positioning groove on the joint and can reciprocate therein. The movement track of the positioning rod is the shape of the channel of the crescent-shaped positioning groove; the end of the main rotating arm connected to the joint There is a cylindrical side mounting rail, the guide rail and the guide bar ends of the cylindrical guide wheel matched;

The torsion bushing and the bed mounting bushing are all “T”-shaped structures, the torsion bushing is sleeved on the bearing and the lower end is inserted into the bearing seat, and the bed mounting bushing is located outside the torsion bushing and sleeved on the bearing; the bearing The surface is threaded and the inside of the bed mounting bushing is threaded and the two threads are snapped together.

Compared with the prior art, the invention has the beneficial effects of:

1. The design of the support module, the sliding module and the air support makes the gravity of the bed plate completely canceled under the action of the positive turning mechanism, and the folding bed can stand firmly at any position regardless of the position of being folded or lowered. It is not only convenient to use, but also can load the bed board to be put down or put down under the load of very small force. On the other hand, the force balance design at any position ensures the safety of use. Moreover, through the design of the auxiliary components such as the curved surface guiding device and the guiding rod, the movement track of the turning device is defined, and the working stability of the turning device is ensured.

2. The overall design of the positive turning mechanism of the invention is small, the space occupied by the vertical frame is similar to the volume of the bed board, and the bed board can completely accommodate the inside of the remaining stand.

3. The operation of the positive inversion mechanism of the present invention relies only on its own structural design, and does not require other additional power, energy saving and environmental protection.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a bed plate in a flat state according to an embodiment of a turning device for a flip folding bed of the present invention.

2 is an enlarged schematic view showing a partial view R of FIG. 1 according to an embodiment of the inverting device of the inverted folding bed of the present invention.

3 is a schematic structural view of a curved surface guiding device according to an embodiment of the inverting device of the inverted folding bed of the present invention.

4 is a schematic view showing the structure of a main rotor of an embodiment of the inverting device of the inverted folding bed of the present invention.

Figure 5 is a schematic view showing the structure of a bearing housing of an embodiment of the inverting device of the inverted folding bed of the present invention.

Figure 6 is a schematic view showing the structure of a bearing housing of an embodiment of the inverting device of the inverted folding bed of the present invention.

Figure 7 is a diagram showing the leading force analysis of the main force-receiving members of an embodiment of the inverting device of the inverted folding bed of the present invention.

detailed description

The invention will be further illustrated by the following figures, but should not be construed as limiting the scope of the invention.

In order to facilitate the description and understanding of the technical solutions of the present invention, the following orientation terms, as described above, the left and right, and the inside and outside, are based on the orientations shown in the drawings.

The invention relates to a turning device for flipping a folding bed (referred to as a turning device, see FIG. 1-7), which comprises a stand, a support module 2 and a rotating module 3; the stand is provided with a left side plate 1 and a right side plate. The frame structure, the support module 2 and the rotating module 3 are two sets, each set is respectively installed on the inner side surface of the left side plate 1 and the right side plate of the vertical frame 1, and the left side plate 1 and the right side plate have the same structure; The inner side surface of the left side plate 11 has an inner groove 11 for mounting the support module 2 and the rotating module 3; wherein the inner groove 11 is composed of two segments, and the upper segment is parallel to the upper and lower sides. The trapezoidal groove has a length of the left side longer than the length of the right side, and a lower section is an arcuate groove extending from the right side of the trapezoidal groove to the lower left and finally connected to the left side of the trapezoidal groove. The outer peripheral surface of the arcuate groove is cut away by a layer, and a guide rod 12 is mounted at a bottom intermediate portion of the outer peripheral surface of the arcuate groove. The lower end of the guide rod 12 is a shaft connection, and the upper end is provided with a guide wheel. The left side is elastically connected to the left side of the bottom of the outer peripheral surface by a spring and an arcuate groove. The curved side of the arcuate groove is a convex curved guide rail 13 extending outwardly in the middle.

The support module 2 includes a gas strut mounting plate 21, a gas strut 22 and a joint 23, and the gas strut mounting plate 21 is movably mounted on the top of the inner groove 11 by a pin; the fixed end of the gas brace 22 is installed at The lower end of the gas-supporting mounting plate 21 has a movable end fixed to the joint 23; the joint 23 has a substantially spade-shaped structure, and the front half has a palm shape with a front end horizontally and a gas-supporting connecting hole for mounting the gas stay 22 The movable end, the latter half is a truncated cone structure with a joint through hole at the center position, and a truncated positioning groove centered on the center of the joint through hole on the truncated cone structure in the orientation of the joint through hole toward the front half, the first half of the joint 23 The part and the back part are joined together and integrally cast.

A curved surface guiding device 231 is mounted on the joint 23, and the curved surface guiding device 231 includes a mounting piece 2311, a connecting piece 2312 and a guiding wheel 2313. The mounting piece 2311 is fixed to the right edge edge of the joint 23 by screws, and the connecting piece 2312 is vertically fixed at the lower left end position of the mounting piece 2311, There are two guide wheels 2313 which are vertically fixedly mounted on the left and right sides of the engaging piece 2312, and the distance between the two guide wheels 2313 matches the size of the convex curved guide rail 13 on the inner groove track 11.

The rotating module 3 includes a main rotating arm 31, a positioning rod, a bearing seat 33, a bearing 34, a torsion bushing 35, a bed mounting bushing 36 and a bearing mounting plate 32; the bearing mounting plate 32 is mounted in the inner groove path 11 The left outer side edge of the arcuate groove is fixed to the vertical frame 1 by screws; the bearing seat 33 is screwed to the bearing mounting plate 32, and the bearing 34 passes through the bearing seat 33, the torsion bushing 35 and The bed plate is mounted with a sleeve 36; one end of the main rotating arm 31 is fixed on the bearing seat 33, and the other end is connected with the joint 23 through a shaft pin; the middle end of the main rotating arm 31 and the joint 23 is one big and one small. Two mounting holes, wherein the large mounting holes are matched with the connector through holes on the joint 23, and the two are movably connected by a shaft pin, and the small mounting hole is located in a direction in which the large mounting hole faces the other end of the main arm 31. One end of the positioning rod is fixed in a small mounting hole. When the main rotating arm 31 is connected with the joint 23, the other end of the positioning rod is located inside the crescent-shaped positioning groove on the joint 23, and can reciprocate therein, the positioning rod The motion track is the channel of the crescent-shaped positioning groove Like. The lower side of one end of the main rotating arm 31 connected to the joint 23 is mounted with a cylindrical guide rail which is matched with the guide wheel at the upper end of the guide rod 12.

The torsion bushing 35 and the bed mounting bushing 36 are both "T"-shaped structures. The torsion bushing 35 is sleeved on the bearing 34 and the lower end is inserted into the bearing seat 33. The bed mounting bushing 36 is located outside the torsion bushing 35 and The bearing 34 is threaded on the surface, and the inside of the bed mounting bushing 36 is threaded, and the two threads are snap-fitted together.

The gas stays 22 are three, and the three are installed in parallel between the lower end of the gas stay mounting plate 21 and the gas stay connecting hole of the joint 23. The three gas struts 22 are installed in parallel, so that the force of the gas struts loaded on the rotating module 3 is relatively stable, and the offset is less likely to occur during the turning process, thereby enhancing the operational stability of the entire mechanism.

The torsion bushing 35 is made of a non-rigid material. Because the bed plate is subjected to a large force during the turning process, the bearing 34 and the components thereon are subjected to a large force. If all the rigid components are connected, the component is easily damaged. The torsion bushing 35 acts to cushion the torsional force, enhancing structural stability and fatigue resistance.

The inverting device of the present invention is further provided with a cover (not shown) matching the inner groove 11 to prevent dust and debris from entering the inside of the metal channel, thereby affecting the stability of the forward turning mechanism; It is also equipped with a bed board mounting bracket (not shown), which is fixed on the bed board mounting bushing 36, and the bed board is mounted on the two bed board mounting brackets of the left and right side boards.

The turning device of the invention pushes the folding bed to fold and lay down:

(1) From horizontal to folded state: gently lift the wake-up board by hand (very small force is sufficient), at this time, the air brace 22 releases the downward pressure, pushes the joint 23 downward, and the joint 23 pushes the main rotating arm connected thereto. One end of the 31 moves downward, and according to the principle of the lever, the main arm 31 and the end connected to the bearing seat 33 move upward to push the bed plate upward; during this process, the downward force of the air brace 22 is transmitted to the joint 23 to The main rotating arm 31, due to the dynamic connection of the joint 23 and the main rotating arm 31, causes the force obtained by the bed mounting bushing 36 to constantly change, and when the joint 23 moves downward, the upward force of the bed mounting bushing 36 is continuously increased. The bed plate fixed on the bed board mounting sleeve 36 thus obtains an increasing upward urging force; with the center of gravity of the bed board as a fulcrum, the upward urging force of the bed board and the work done by the torque to the fulcrum and the gravitational potential energy of the bed board itself remain dynamic. Balance, therefore, the bed can be moved upwards as long as the bed is given a small plus upward thrust, and the bed can be still in the current position when the external thrust is removed. With a small boosting force, the bed can be pushed upright, and the bed is completely stored inside the stand. The downward pressure released by the air brace 22 is transmitted to the bed and the force is decomposed to the horizontal level. The vertical force is an upward component and a rightward horizontal component in the direction of the frame. The upward component, the horizontal component in the direction of the frame, and the downward gravity of the bed itself make the bed stable. Folded inside the stand 1 .

(2) Leveling from the folded state: the hand is pressed down by hand, the force on the center of gravity of the bed changes, and the downward displacement of the bed position causes the bed mounting bushing 36 to obtain an upward thrust which causes the main arm 31 moves upward, moves into the joint 23, and the force of the gas brace 22 gradually becomes smaller; in the process, the downward gravity of the bed plate itself is the main power, and the adjustment of the main rotating arm 31 and the joint 23, the bed plate The force at the center of gravity is in a dynamic equilibrium state. Therefore, the bed plate can be moved downwards by giving a small downward pressure to the bed. When the bed is completely flat, the air brace 22 is transferred to the bed. The disintegrating force of the force on the plate is an upward supporting force and a horizontal component, so that the bed can be kept horizontal and can withstand a certain gravity.

During the movement of the inverting device of the present invention, the curved surface guiding device 231 on the joint 23 is movably connected with the convex curved guiding rail 13 of the inner grooved passage 11, and the cylindrical guiding rail on the lower side of the main rotating arm 31 and the upper end of the guiding rod 12 The guide wheel is movably connected, the movable connection at the two places defines a movement trajectory of the support module 2 and the rotation module 3, and a spring is connected to the left side of the guide rod 12, and the spring ensures that the main rotation arm 31 is separated from the guide rod 12 each time. The guide rod 12 can return to the original position, ensuring that the main rotating arm 31 is consistent with the contact point of the guiding rod 12 each time it descends, thereby ensuring the working stability of the entire device.

The supporting module 2 and the rotating module 3 of the inverting device of the present invention are connected together by a joint 23 and a main rotating arm 31, and the joint 23 and the main rotating arm 31 are movably connected by a shaft pin, and the connecting manner is compared with a conventional fixed connection. The shaft pin movable connection can absorb the internal stress that the bearing itself can bear when the force is transmitted, slow down the wear and extend the life of the component, and secondly, can adjust the force transmitted by the gas brace 22 to the main rotating arm 31, and between the joint 23 and the main rotating arm 31. The relative movement of the joint 23 and the main arm 31 are constantly changing, so that the force obtained by the main arm 31 is also constantly changing. Since the position and moment of the center of gravity of the bed is constantly changing as it moves up or down, it requires a correspondingly varying force and moment to keep it balanced. The magnitude of the compressive force of the gas brace 22, the length of the joint 23, the angle between the joint 23 and the main swivel arm 31 (defined by the positioning rod and the crescent-shaped positioning groove), and the length of the main swivel arm 31 are both according to the weight of the bed and The size is designed, and the decomposition and consumption of the force between the force component and other components are comprehensively considered. After many trials and adjustments, the optimal assembly parameters are finally determined.

The basic force analysis of the main components of the working device of the inverting device of the present invention is shown in Fig. 7 (ignoring the force of the auxiliary components). In the figure, the point O is the center of the bearing, the point A is the center of gravity of the bed, and the point B is the air brace 22 acting on the main arm. At the point of force on 31, point C is the fixed point at the upper end of the air brace 22. G is the bed gravity, F is the force exerted by the air brace 22 on the main arm 31, and F ₁ is the component of F in the vertical direction. L ₁ is the AO length and L ₂ is the OB length. α is the angle between the bed plate and the horizontal direction, θ is the angle between the main arm 31 and the horizontal direction, and β is the angle between the F and the vertical direction.

Bed plate torque

Main arm moment M ₂ =F ₁ L ₂ cosθ=Fcosβ·L ₂ cosθ, when M ₁ =M ₂

The bed can be balanced.

The force-receiving condition of the inverting device of the present invention shown in FIG. 7 is the dominant force drawing diagram of the main force-receiving component. In practical applications, there are many additional additional forces, such as friction and force between adjacent components. The internal loss of the components during transmission, etc., through the position, structure and size design of the components, makes the force system of the entire turning device relatively stable, and the bed plate is more likely to reach equilibrium. The design of the inverting device of the invention enables the bed to be dynamically balanced by the force, that is, it can be stopped at any position during the turning process, and the bed can be retracted or lowered by loading a very small force. In addition, the force balance design at any point ensures the safety of use.

The forward turning mechanism of the present invention is only used for the folding bed in the present application. However, according to the basic features of the forward turning mechanism and the introduction of the present application, the positive turning mechanism of the present invention can be used in many occasions requiring a turning action, depending on the occasion. The weight can be adjusted.

Variations and modifications of the above-described embodiments may also be made by those skilled in the art in light of the above disclosure. Therefore, the invention is not limited to the specific embodiments disclosed and described herein, and the modifications and variations of the invention are intended to fall within the scope of the appended claims. In addition, although specific terms are used in the specification, these terms are merely for convenience of description and do not limit the invention.

What is not mentioned in the present invention is applicable to the prior art.

Claims

The inverting device for flipping the folding bed comprises a vertical frame, a supporting module and a rotating module; the vertical frame is a frame structure with a left side plate and a right side plate, and the supporting module and the rotating module are two sets, each set respectively Installed on the inner side of the left side panel and the right side panel of the vertical frame, the structure of the left side panel and the right side panel are the same; the inner side surface of the left side panel has an inner groove channel for mounting the support module and rotating The module is characterized in that: the inner groove track is composed of two segments, and the upper segment is a trapezoidal groove parallel to the upper and lower bottom edges, the length of the left side length is greater than the length of the right side length, and the lower part is from the right side of the trapezoidal groove a curved groove extending at the lower left side and finally connected to the left side of the trapezoidal groove; the outer peripheral surface of the curved groove is cut away by a layer, and a guide rod is installed at a position intermediate the bottom of the outer peripheral surface of the curved groove. The lower end of the guide rod is a shaft connection, and the upper end is provided with a guide wheel, and the left side thereof is elastically connected to the left side of the bottom portion of the outer peripheral surface by a spring and an arc groove; the curved side of the arc groove is the middle outward Extended convex curved guide rail;

The support module includes a gas strut mounting plate, a gas strut and a joint, and the gas strut mounting plate is movably mounted on a top of the inner groove track through a pin; the fixed end of the gas brace is installed at a lower end of the gas brace plate. The movable end is fixed on the joint; the joint is generally in the shape of a spatula, the front part is a horizontal palm shape at the front end, and the gas support hole is arranged on the movable end of the gas support, and the rear half has a central position The truncated cone structure of the through hole of the joint has a crescent-shaped positioning groove centered on the center of the through hole of the joint on the truncated cone structure facing the front half of the joint through hole, and the front half and the rear half of the joint are connected together, and the whole casting is formed. ;

The joint is mounted with a curved surface guiding device, and the curved surface guiding device comprises a mounting piece, a connecting piece and a guiding wheel. The mounting piece is fixed to the right edge of the joint by screws, and the connecting piece is vertically fixed on the left side of the mounting piece. In the lower end position, the guide wheels are two, and are vertically fixedly mounted on the left and right sides of the connecting piece, and the distance between the two guiding wheels matches the size of the convex curved guiding rail on the inner groove track;

The rotating module comprises a main rotating arm, a positioning rod, a bearing seat, a bearing, a torsion bushing, a bed mounting bushing and a bearing mounting plate; the bearing mounting plate is mounted on a left outer side edge of the arc groove of the inner groove track And fixed to the vertical frame by screws; the bearing seat is fixed on the bearing mounting plate by screws, the bearing sequentially passes through the bearing seat, the torsion bushing and the bed plate mounting sleeve; the main rotating arm is fixed at one end of the bearing seat Upper end and the joint are connected by a pin; the main arm is connected to the end of the joint There are two large and small mounting holes, wherein the large mounting holes match the joint through holes on the joint, and the two are movably connected by a shaft pin, and the small mounting hole is located at a large mounting hole toward the other end of the main rotating arm. Azimuthally, one end of the positioning rod is fixed in a small mounting hole. When the main rotating arm is connected with the joint, the other end of the positioning rod is located inside the crescent-shaped positioning groove on the joint, and can reciprocate therein, the positioning rod The movement track is a channel shape of the crescent-shaped positioning groove; a lower side of the end of the main rotating arm connected to the joint is mounted with a section of a cylindrical guide rail, and the cylindrical guide rail is matched with the guiding wheel at the upper end of the guiding rod;

The torsion bushing and the bed mounting bushing are all “T”-shaped structures, the torsion bushing is sleeved on the bearing and the lower end is inserted into the bearing seat, and the bed mounting bushing is located outside the torsion bushing and sleeved on the bearing; the bearing The surface is threaded and the inside of the bed mounting bushing is threaded and the two threads are snapped together.
The turning device for a flip folding bed according to claim 1, wherein the air support is three, and the three are installed in parallel between the lower end of the gas stay mounting plate and the gas stay connecting hole of the joint.
The turning device for a flip folding bed according to claim 1, wherein the torsion bushing is made of a non-rigid material.