CN110881804A - Rotating joint of folding bed and folding bed - Google Patents
Rotating joint of folding bed and folding bed Download PDFInfo
- Publication number
- CN110881804A CN110881804A CN201811041216.7A CN201811041216A CN110881804A CN 110881804 A CN110881804 A CN 110881804A CN 201811041216 A CN201811041216 A CN 201811041216A CN 110881804 A CN110881804 A CN 110881804A
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- ring gear
- outer ring
- rotating body
- inner ring
- teeth
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C19/00—Bedsteads
- A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
- A47C19/021—Bedstead frames
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C19/00—Bedsteads
- A47C19/12—Folding bedsteads
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- Invalid Beds And Related Equipment (AREA)
Abstract
The invention relates to a rotary joint of a folding bed, which comprises a first rotating body, a second rotating body and a locking mechanism, wherein the locking mechanism is used for locking or unlocking the first rotating body and the second rotating body relatively; the locking mechanism comprises an outer ring gear arranged between the first rotating body and the second rotating body, an elastic piece used for enabling the outer ring gear to tend to slide towards one side of the second rotating body, and a button used for operating the outer ring gear to slide along the axial direction of the rotating axis; the first rotating body and the second rotating body are respectively provided with a first inner ring gear and a second inner ring gear. The rotary joint has compact structure and is stable and reliable when in use, and the folding bed applying the rotary joint of the invention can automatically lock the rotary joint after the bedstead is unfolded in place, thereby being very convenient for the operation of a user.
Description
Technical Field
The invention relates to a rotating joint of a folding bed and the folding bed.
Background
The folding bed is a simple bed which can be folded and unfolded in various folding modes for convenience and space saving by utilizing the joint rotation folding principle. It is convenient and practical, it is convenient to preserve; the folding bed is convenient to use and carry, so that the appearance of the folding bed brings convenience to life for people; at present, the market has a plurality of folding beds with different shapes, structures and folding principles. Most of folding beds in the market have the defects of multiple joints, complex structure, inconvenient folding operation, larger volume after being folded, inconvenient carrying and storage and the like; however, as the standard of living of people increases, users are increasingly paying attention to the safety and operability of folding beds and portability after folding in order to enjoy the most comfortable home experience. Therefore, how to provide a folding bed which has simple, compact and novel structure, simple and convenient folding and unfolding operation, small volume after folding and safe and firm after unfolding is the direction of research constantly by technicians in the field.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a rotary joint of a folding bed, wherein the rotary joint structure can be automatically locked.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a rotary joint of a folding bed comprises a first rotating body, a second rotating body and a locking mechanism for locking or unlocking the first rotating body and the second rotating body relatively; the locking mechanism comprises an outer ring gear arranged between the first rotating body and the second rotating body, an elastic piece used for enabling the outer ring gear to tend to slide towards one side of the second rotating body, and a button used for operating the outer ring gear to slide along the axial direction of the rotating axis; the first rotating body and the second rotating body are respectively provided with a first inner ring gear and a second inner ring gear, and the outer ring gear is clamped with the first inner ring gear and the second inner ring gear when the locking mechanism is in a locking state; when the locking mechanism is in an unlocking state, the outer ring gear is clamped with the first inner ring gear, the outer ring gear is separated from the second inner ring gear, and the outer ring gear is rotationally arranged around the rotation axis relative to the second rotating body; the locking mechanism also has a transitional state in which the outer ring gear is engaged with the first inner ring gear and the second inner ring gear, and the outer ring gear is disposed to axially slide along the axis of rotation relative to both the first rotating body and the second rotating body.
Preferably, the tooth widths of the outer ring gear are at least two, and the first inner ring gear and the second inner ring gear are matched with the outer ring gear.
Preferably, the end surface of the tooth of the outer ring gear forms an outer ring gear contact surface, the end surface of the tooth of the second inner ring gear forms a second inner ring gear contact surface, the outer ring gear contact surface and the second inner ring gear contact surface are in interference and the two surfaces are in sliding contact in the rotational direction about the rotational axis when the locking mechanism is in the unlocked state.
Preferably, the tooth widths of the outer ring gear are two widths, namely wide teeth and narrow teeth, and the number of the wide teeth is at least four; when the locking mechanism is in an unlocking state, the end faces of the wide teeth of the at least three outer ring gears are all abutted to the contact face of the second inner ring gear under any relative rotation angle of the first rotating body and the second rotating body. Through the design, no matter how the outer ring gear rotates, the end face of at least three wide teeth on the outer ring gear always props against the end face of the teeth on the second inner ring gear, so that the first rotating body and the second rotating body can rotate relatively stably during unlocking.
Preferably, the outer ring gear is provided with four wide teeth, two wide teeth are positioned on one side of the outer ring gear in the circumferential direction, the other two wide teeth are positioned on the other side of the outer ring gear in the circumferential direction, one narrow tooth is arranged between the two wide teeth, and two narrow teeth are arranged between the other two wide teeth.
Preferably, the outer ring gear, the first inner ring gear and the second inner ring gear are made of plastics.
The invention also relates to a folding bed, which comprises a bed frame with an unfolding state and a folding state, wherein the bed frame comprises a plurality of rod pieces which are connected in a rotating way, and the rotating connection part of at least one adjacent rod piece is provided with the rotating joint.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the rotary joint of the folding bed, the first inner ring gear on the first rotating body, the second inner ring gear on the second rotating body and the outer ring gear are arranged in a matched mode (the widths of the teeth are different), so that when the joint is unlocked, the end face of the teeth on the outer ring gear is mutually abutted to the end face of the teeth on the second inner ring gear, and the outer ring gear cannot be abutted to be meshed with the second inner ring gear through the spring; in addition, when the folding bed is unlocked, namely when the end surfaces of the teeth on the outer ring gear and the second inner ring gear are mutually abutted, no matter how the outer ring gear rotates, the end surfaces of at least three wide teeth on the outer ring gear are always abutted against the end surfaces of the teeth on the second inner ring gear, and the three wide teeth form a wider abutting surface, so that the outer ring gear is stably abutted against the two inner ring gears and cannot tilt, namely, in an unlocking state, the teeth on the outer ring gear and the teeth on the second inner ring gear cannot interfere.
Drawings
Fig. 1 is an exploded view of a rotary joint according to the present invention in a three-dimensional state;
FIG. 2 is a front view of the outer ring gear of the present invention;
FIG. 3 is a schematic perspective view of a frame of the folding bed of the present invention (in an unfolded state);
FIG. 4 is a schematic perspective view of a folding bed frame according to the present invention (in folding);
wherein: 1. a revolute joint; 11. a first rotating body; 110. a first inner ring gear; 12. a second rotating body; 120. a second inner ring gear; 13. an outer ring gear; 131. wide teeth; 132. narrow teeth; 14. an elastic member; 15. a button; 21. a first frame enclosing rod; 221. a first lever; 222. a second lever; 23. a support leg bar; 24. a first connecting strut; 251. a third lever; 252. and a fourth bar.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 and 2, a revolute joint 1 of a folding bed comprises a first rotator 11 and a second rotator 12, and a locking mechanism for locking or unlocking the first rotator 11 and the second rotator 12 relatively; the first rotating body 11 and the second rotating body 12 are disposed in a phase-fixed manner in a locked state of the lock mechanism, and the first rotating body 11 and the second rotating body 12 are disposed in a phase-fixed manner around a rotation axis in an unlocked state of the lock mechanism, the lock mechanism including an outer ring gear 13 disposed between the first rotating body 11 and the second rotating body 12, an elastic member 14 for making the outer ring gear 13 tend to slide toward the second rotating body 12 side, and a push button 15 for operating the outer ring gear 13 to slide axially along the rotation axis; the first rotating body 11 and the second rotating body 12 are respectively provided with a first inner ring gear (not shown in the figure) and a second inner ring gear 120, and the outer ring gear 13 is clamped with the first inner ring gear and the second inner ring gear 120 in a locking state of the locking mechanism; when the locking mechanism is in an unlocked state, the outer ring gear 13 is clamped with the first inner ring gear, the outer ring gear 13 is separated from the second inner ring gear 120, and the outer ring gear 13 is rotationally arranged around the rotation axis relative to the second rotating body 12; the lock mechanism further has a transition state in which the outer ring gear 13 is engaged with the first inner ring gear and the second inner ring gear 120, and the outer ring gear 13 is provided to slide in the axial direction of the rotation axis relative to both the first rotating body 11 and the second rotating body 12 (the outer ring gear 13, the first inner ring gear, and the second inner ring gear 120 are made of plastic).
Specifically, there are at least two tooth widths on the outer ring gear 13, and the first and second inner ring gears 120 are matched with the outer ring gear 13. The end surfaces of the teeth of the outer ring gear 13 form an outer ring gear contact surface, the end surfaces of the teeth of the second inner ring gear 120 form a second inner ring gear contact surface, and when the lock mechanism is in the unlocked state, the outer ring gear contact surface and the second inner ring gear contact surface are in contact with each other, and the two surfaces are in sliding contact with each other in the rotation direction around the rotation axis.
In this example, the tooth widths of the outer ring gear 13 have two widths, namely a wide tooth 131 and a narrow tooth 132, and the number of the wide teeth 131 is at least four; in the unlocked state of the locking mechanism, the end faces of the wide teeth 131 of the at least three outer ring gears 13 are in contact with the second inner ring gear contact face at any relative rotation angle of the first and second rotating bodies 11 and 12.
In this example, four wide teeth 131 are provided on the outer ring gear 13, two wide teeth 131 are located on one side in the circumferential direction of the outer ring gear 13, the other two wide teeth 131 are located on the other side in the circumferential direction of the outer ring gear 13, one narrow tooth 132 is provided between the two wide teeth 131, and two narrow teeth 132 are provided between the other two wide teeth 131. Through the design, no matter how the outer ring gear 13 rotates in the unlocking state, the end surfaces of at least three wide teeth 131 on the outer ring gear are always abutted against the end surfaces of the teeth on the second inner ring gear 120, so that the first rotating body 11 and the second rotating body 12 can rotate relatively stably in the unlocking state.
Referring to fig. 1 to 4, the present invention further relates to a folding bed, which comprises a bed frame having an unfolded state and a folded state, and a fixing mechanism for fixing the bed frame in the unfolded state, wherein the bed frame comprises a surrounding frame located above the bed frame for forming a sleeping portion, and a supporting frame supported below the surrounding frame, the surrounding frame and the supporting frame are respectively provided with a plurality of rod members which are rotatably connected, and the rotating connection portion of at least one adjacent rod member is provided with a rotating joint described in the present invention.
Specifically, the enclosure frame comprises first enclosure frame rods 21 positioned on two sides of the bed frame in the length direction and second enclosure frame rods positioned on two sides of the bed frame in the width direction, the support frame comprises four support leg rods 23 extending in the up-down direction, the first enclosure frame rods 21 are fixedly connected with the upper parts of the support leg rods 23, the second enclosure frame rods comprise first rods 221 and second rods 222 which are connected with one end parts in a rotating mode (one end parts of the first rods 221 and the second rods 222 in the rotating mode are in rotating connection through a rotating joint 1, the fixing mechanism is a locking mechanism at the rotating joint 1), and the other ends of the first rods 221 and the second rods 222 on two sides are respectively in rotating connection with the upper parts of the corresponding support leg rods 23; the rotation axes of the first rod 221 and the second rod 222, which rotate together, extend in the vertical direction, and the rotation axes of the first rod 221 and the second rod 222, which rotate together with the leg bar 23, extend in the vertical direction, respectively. In addition, the support frame also comprises first connecting support rods 24 which are positioned at two sides of the length direction of the bed frame and fixedly connected between two adjacent support leg rods 23, and second connecting support rods which are positioned at two sides of the width direction of the bed frame and rotatably connected between two adjacent support leg rods 23, wherein each second connecting support rod comprises a third rod 251 and a fourth rod 252, one end parts of the third rod 251 and one end part of the fourth rod 252 are rotatably connected, and the rotating axes of the third rod 251 and the fourth rod 252 are extended along the left and right direction of the bed frame; the rotation axis line of the leg bar 23 rotating with the second linking bar extends in the left-right direction of the frame.
In addition, in this example, when the bed frame is in the unfolded state, the height of the second surrounding frame rod on one side of the second surrounding frame rods on the two sides is higher than that of the second surrounding frame rod on the other side. When the bedstead is folded, the first rod 221 and the second rod 222 in the second enclosing frame rod are relatively folded, meanwhile, the first rod 221 and the second rod 222 on two sides are overlapped in the up-down direction gradually with one side up and one side down, and the overlapping process is not interfered with each other.
The folding bed frame of the folding bed has the following folding conditions: the first frame enclosing rods 21 on the two sides are pushed, the first rods 221 and the second rods 222 on the two sides above the bedstead rotate left and right and are relatively folded, and the third rods 251 and the fourth rods 252 on the two sides below the bedstead rotate up and down and are relatively folded until the rods of the bedstead are mutually folded in the front and back directions, so that the folding of the bedstead is completed.
In summary, in the rotating joint of the folding bed of the present invention, the first inner ring gear on the first rotating body, the second inner ring gear on the second rotating body, and the outer ring gear are cooperatively arranged (the widths of the teeth are different), so that when the joint is unlocked, the end surface of the teeth on the outer ring gear and the end surface of the teeth on the second inner ring gear are abutted against each other, and the outer ring gear cannot be pressed by the spring to be engaged with the second inner ring gear; in addition, when the folding bed is unlocked, namely when the end surfaces of the teeth on the outer ring gear and the second inner ring gear are mutually abutted, no matter how the outer ring gear rotates, the end surfaces of at least three wide teeth on the outer ring gear are always abutted against the end surfaces of the teeth on the second inner ring gear, and the three wide teeth form a wider abutting surface, so that the outer ring gear is stably abutted against the two inner ring gears and cannot tilt, namely, in an unlocking state, the teeth on the outer ring gear and the teeth on the second inner ring gear cannot interfere with each other;
it should be noted that, if the outer ring gear cannot rotate in the unlocked state, the outer ring gear can be stably abutted against the second inner ring gear, and then the rotary joint cannot be used. The structure of the invention is the design of the specific tooth structure obtained by the inventor through carrying out multiple times of mold injection, test body and tests.
In addition, the bed frame of the folding bed has simple and compact structure, few rod pieces and no mutual interference, greatly reduces the manufacturing cost and improves the market competitiveness; the folding and unfolding operations of the bed frame are very simple, and the bed frame is flat after being folded integrally, so that the bed frame is very convenient to store in a narrow or low space.
The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.
Claims (7)
1. A rotary joint of a folding bed comprises a first rotating body, a second rotating body and a locking mechanism for locking or unlocking the first rotating body and the second rotating body relatively; the first rotating body and the second rotating body are arranged in a phase-fixed manner when the locking mechanism is in a locked state, and are arranged in a manner of rotating around a rotating axis when the locking mechanism is in an unlocked state, characterized in that: the locking mechanism comprises an outer ring gear arranged between the first rotating body and the second rotating body, an elastic piece used for enabling the outer ring gear to tend to slide towards one side of the second rotating body, and a button used for operating the outer ring gear to slide along the axial direction of the rotating shaft center line; the first rotating body and the second rotating body are respectively provided with a first inner ring gear and a second inner ring gear, and the outer ring gear is clamped with the first inner ring gear and the second inner ring gear when the locking mechanism is in a locking state; when the locking mechanism is in an unlocking state, the outer ring gear is clamped with the first inner ring gear, the outer ring gear is separated from the second inner ring gear, and the outer ring gear is rotationally arranged around the rotation axis relative to the second rotating body; the locking mechanism also has a transition state, in which the outer ring gear is clamped with the first inner ring gear and the second inner ring gear, and the outer ring gear is arranged along the axial direction of the rotating axis relative to the first rotating body and the second rotating body in a sliding manner.
2. The revolute joint of a folding bed according to claim 1, characterized in that: the tooth widths of the outer ring gear are at least two, and the first inner ring gear and the second inner ring gear are matched with the outer ring gear.
3. The revolute joint of a folding bed according to claim 2, characterized in that: the end surfaces of the teeth of the outer ring gear form an outer ring gear contact surface, the end surfaces of the teeth of the second inner ring gear form a second inner ring gear contact surface, when the locking mechanism is in an unlocking state, the outer ring gear contact surface is abutted against the second inner ring gear contact surface, and the two surfaces are in sliding contact in the rotating direction around the rotating axis.
4. The revolute joint of a folding bed according to claim 3, characterized in that: the tooth widths of the outer ring gear are two widths, namely wide teeth and narrow teeth, and the number of the wide teeth is at least four; when the locking mechanism is in an unlocking state, the end faces of the wide teeth of the at least three outer ring gears are all abutted against the contact face of the second inner ring gear under any relative rotation angle of the first rotating body and the second rotating body.
5. The revolute joint of a folding bed according to claim 4, characterized in that: the outer ring gear is provided with four wide teeth, two wide teeth are positioned on one side of the outer ring gear in the circumferential direction, the other two wide teeth are positioned on the other side of the outer ring gear in the circumferential direction, a narrow tooth is arranged between the two wide teeth, and two narrow teeth are arranged between the other two wide teeth.
6. The revolute joint of a folding bed according to claim 5, characterized in that: the outer ring gear, the first inner ring gear and the second inner ring gear are made of plastics.
7. A folding bed, comprising a frame having an unfolded state and a folded state, said frame comprising a plurality of pivotally connected members, characterized in that: the rotational connection of at least one adjacent rod is provided with a revolute joint according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041216.7A CN110881804A (en) | 2018-09-07 | 2018-09-07 | Rotating joint of folding bed and folding bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041216.7A CN110881804A (en) | 2018-09-07 | 2018-09-07 | Rotating joint of folding bed and folding bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110881804A true CN110881804A (en) | 2020-03-17 |
Family
ID=69744425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811041216.7A Pending CN110881804A (en) | 2018-09-07 | 2018-09-07 | Rotating joint of folding bed and folding bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110881804A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2721509Y (en) * | 2004-05-31 | 2005-08-31 | 张新未 | Foldable bicycle |
| CN200976993Y (en) * | 2006-08-29 | 2007-11-21 | 上海大阿福童车有限责任公司 | Enclosure bottom folding center angle adjustable lockable joint mechanism |
| CN201037006Y (en) * | 2007-03-21 | 2008-03-19 | 中山乐美达日用制品有限公司 | Handcart frame folding structure for baby carriage |
| CN203528578U (en) * | 2013-09-24 | 2014-04-09 | 好孩子儿童用品有限公司 | Foldable seat bag |
| CN205696844U (en) * | 2016-03-22 | 2016-11-23 | 安徽酷豆丁儿童用品有限公司 | The trapezoidal Children's bed of a kind of folding |
-
2018
- 2018-09-07 CN CN201811041216.7A patent/CN110881804A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2721509Y (en) * | 2004-05-31 | 2005-08-31 | 张新未 | Foldable bicycle |
| CN200976993Y (en) * | 2006-08-29 | 2007-11-21 | 上海大阿福童车有限责任公司 | Enclosure bottom folding center angle adjustable lockable joint mechanism |
| CN201037006Y (en) * | 2007-03-21 | 2008-03-19 | 中山乐美达日用制品有限公司 | Handcart frame folding structure for baby carriage |
| CN203528578U (en) * | 2013-09-24 | 2014-04-09 | 好孩子儿童用品有限公司 | Foldable seat bag |
| CN205696844U (en) * | 2016-03-22 | 2016-11-23 | 安徽酷豆丁儿童用品有限公司 | The trapezoidal Children's bed of a kind of folding |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200317 |
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| RJ01 | Rejection of invention patent application after publication |