Folding joint and baby bed

Abstract

A folding joint and an infant bed, the folding joint comprises a first main support rod, a second main support rod, a first auxiliary support rod, and a second auxiliary support rod, each of which is rotatably arranged around a concentric axis at one end, and also comprises a synchronous rotation mechanism, the synchronous rotation mechanism comprises a moving part, a first driving groove arranged on the first main support rod, a second driving groove arranged on the second main support rod, a first guide groove arranged on the first auxiliary support rod, and a second guide groove arranged on the second auxiliary support rod. The folding joint is applied to a new infant bed, and through the synchronous rotation mechanism, the moving part slides radially in the driving groove and the guide groove relative to the axis of the concentric axis during the unfolding or folding process of the folding joint, thereby driving the four components of the main support rod and the auxiliary support rod to rotate synchronously, thereby completing the unfolding and folding of the bed, and the unfolding or folding operation is convenient, and the volume after folding is small and easy to store, and convenient to carry.

Description

Technical Field

[0001] The invention relates to a folding joint and a baby bed. Background Art

[0002] Cribs are widely used due to their convenience. Especially with the relaxation of the two-child policy, there are more and more children, and thus the demand for cribs is increasing. Moreover, the performance requirements for cribs are also getting higher and higher, especially the operability and size.

[0003] In the prior art, there is a baby bed as shown in publication number CN209733216U, a folding baby bed frame, including side brackets located on both sides, each side bracket including a foldable first upper frame, a foldable second upper frame, a first foot frame and a second foot frame; the first upper frame, the second upper frame, the first foot frame and the second foot frame on each side are rotatably connected and a side bracket lock mechanism is provided at the rotation connection, the other ends of the first upper frames on both sides and the other ends of the second upper frames on both sides are respectively rotatably arranged, and the side bracket lock mechanisms are respectively provided at the two rotation settings. The baby bed cannot be unfolded or folded at the same time. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a folding joint having an unfolded position and a folded position.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a folding joint with an unfolded position and a folded position, including a first main support rod, a second main support rod, a first auxiliary support rod, and a second auxiliary support rod, each of which has one end portion and is respectively arranged to rotate around a concentric axis, and also includes a synchronous rotation mechanism, the synchronous rotation mechanism including a moving part, a first driving groove arranged on the first main support rod, a second driving groove arranged on the second main support rod, a first guide groove arranged on the first auxiliary support rod, and a second guide groove arranged on the second auxiliary support rod. When the folding joint is in the process of unfolding or folding, the moving part is inserted in the first driving groove, the second driving groove, the first guide groove and the second guide groove and slides, and moves radially relative to the axis center of the concentric axis, thereby causing the first main support rod, the second main support rod, the first auxiliary support rod, and the second auxiliary support rod to rotate among the four components.

[0006] In some embodiments, the first guide groove includes a first guide groove section, a first locking groove section that turns relative to the extension direction of the first guide groove section and is connected to one end thereof, and the second guide groove includes a second guide groove section, a second locking groove section that turns relative to the extension direction of the second guide groove section and is connected to one end thereof, and when the folding joint is in the unfolded position, the moving part is located in the first locking groove section and the second locking groove section.

[0007] In some embodiments, the first locking slot segment and the second locking slot segment are respectively straight slots, and when the folding joint is in the unfolded position, the center lines of the first locking slot segment and the second locking slot segment coincide with the line connecting the center of the moving part and the axis of the concentric axis.

[0008] In some embodiments, the first guide groove section and / or the second guide groove section has an elastic limit member extending outward from a portion of the groove wall and forming a limit protrusion at the end, the limit protrusion is adjacent to the other end of the first guide groove section or the other end of the second guide groove section, and the limit protrusion is partially blocked on the moving path of the moving member.

[0009] In some embodiments, a line connecting the center of the moving member and the axis of the concentric axis forms a symmetry line, the first driving groove and the second driving groove are left-right symmetrical with respect to the symmetry line, and the first driving groove and the second driving groove are straight grooves.

[0010] In some embodiments, the synchronous rotation mechanism also includes a slider groove opened on the first main support rod or the second main support rod, a slider slidably arranged in the slider groove, and a slider positioning member fixed to a cover arranged on the corresponding slider groove and the slider, the first drive groove or the second drive groove is located at the center of the corresponding slider groove, and a slider positioning member groove corresponding to the first drive groove or the second drive groove is opened on the slider positioning member, and the moving member passes through the slider and is inserted into the slider positioning member groove.

[0011] In some embodiments, a reinforcing iron sheet is fixed to the first auxiliary support rod and / or the second auxiliary support rod, and the reinforcing iron sheet is respectively provided with reinforcing iron sheet grooves corresponding to the first guide groove and / or the second guide groove, and the moving part is also inserted in the reinforcing iron sheet groove.

[0012] Another technical problem to be solved by the present invention is a baby bed comprising the folding joint described in any one of claims 1 to 7, wherein the folding joint has two symmetrically arranged on both sides of the baby bed, the first auxiliary support rod on each side is rotatably connected to one end of the first bed surround rod through the first surround rod axis, the second auxiliary support rod on each side is rotatably connected to one end of the second bed surround rod through the second surround rod axis, a first unidirectional rotation joint is arranged between the other ends of the first bed surround rods on both sides, and a second unidirectional rotation joint is arranged between the other ends of the second bed surround rods on both sides, the first surround rod axis is arranged parallel to the rotation axis on the first unidirectional rotation joint and is spatially perpendicular to the concentric axis, the second surround rod axis is arranged parallel to the rotation axis on the second unidirectional rotation joint and is also spatially perpendicular to the concentric axis, and a central support frame is arranged between the first main support rods on both sides and the second main support rods on both sides to enable the four to move together or move away synchronously.

[0013] In some embodiments, the central support frame includes a central seat located in the middle and four groups of connecting rod mechanisms arranged around the central seat, and the four groups of connecting rod mechanisms are respectively connected between the two first main support rods, the two second main support rods and the central seat.

[0014] In some embodiments, each group of the connecting rod mechanism includes an upper base rod located at the top and a lower base rod located below the upper base rod, one end of the upper base rod is pivotally connected to the upper portion of the center seat around a first base axis, the other end of the upper base rod is rotatably arranged with the corresponding main support rod through a first ball joint, one end of the lower base rod is pivotally connected to the lower portion of the center seat around a second base axis, the other end of the lower base rod is rotatably arranged with the corresponding main support rod through a second ball joint, a flattening upper limit mechanism is arranged between each of the upper base rods and the center seat, and a flattening lower limit mechanism is arranged between each of the lower base rods and the center seat.

[0015] The scope of the present invention is not limited to the technical solutions formed by a specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in this application.

[0016] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention provides a new folding joint, which is applied to a new infant bed. Through the synchronous rotation mechanism, when the folding joint is unfolded or folded, the movable part slides radially in the driving groove and the guide groove relative to the axis of the coaxial axis, thereby driving the four components of the main support rod and the auxiliary support rod to rotate synchronously to complete the unfolding and folding of the bed. The unfolding or folding operation is convenient, and the volume is small and easy to store after folding, and it is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a three-dimensional schematic diagram of the unfolded state of the infant bed;

[0018] Attached Figure 2 This is a side view of the baby bed in the unfolded state;

[0019] Attached Figure 3 It is a three-dimensional schematic diagram of the folded state of the baby bed;

[0020] Attached Figure 4 For attachment Figure 1 A enlarged explosion diagram;

[0021] Attached Figure 5 This is a schematic diagram of the internal structure coordination when the folding joint is in the unfolded position;

[0022] Attached Figure 6 It is a schematic diagram of the internal structure coordination during the folding process of the folding joint;

[0023] Among them: 1. folding joint; 11. first main support rod; 12. second main support rod; 13. first auxiliary support rod; 14. second auxiliary support rod; 15. synchronous rotation mechanism; 151. moving part; 152. first driving groove; 153. second driving groove; 154. first guide groove; 154a. first guide groove section; 154b. first locking groove section; 155. second guide groove; 155a. second guide groove section; 155b. second locking groove section; 156. elastic limiting member; 156a. limiting convex point; 157. slider groove; 158. reinforcing iron sheet; 159. slider; 159a. slider positioning member; 2. first bed enclosure rod; 21. first enclosure rod axis; 22. first unidirectional rotation joint;

[0024] 3. Second bed rail; 31. Second rail axis; 32. Second unidirectional rotation joint; 4. Center support frame; 41. Center seat; 411. First bottom axis pivot; 412. Second bottom axis pivot; 413. Flattening upper limit mechanism; 414. Flattening lower limit mechanism; 42. Connecting rod mechanism; 421. Upper bottom rod; 422. Lower bottom rod. DETAILED DESCRIPTION

[0025] As shown in the accompanying drawings, the present invention provides a folding joint 1 having an unfolded position and a folded position. Figure 1 The invention is applied to a baby bed with a folding joint 1 .

[0026] The baby bed comprises two folding joints 1 which are symmetrically arranged on both sides of the baby bed. Each folding joint 1 comprises a first main support rod 11, a second main support rod 12, a first auxiliary support rod 13 and a second auxiliary support rod 14, each end of which is rotatably arranged around a concentric axis.

[0027] In this embodiment, each folding joint 1 also includes a synchronous rotation mechanism 15, which includes a moving part 151 using a pin, a first driving groove 152 arranged on the first main support rod 11, a second driving groove 153 arranged on the second main support rod 12, a first guide groove 154 arranged on the first auxiliary support rod 13, and a second guide groove 155 arranged on the second auxiliary support rod 14.

[0028] In this embodiment, as shown in the attached Figure 2 As shown, the first guide groove 154 includes a first guide groove section 154a, a first locking groove section 154b which is bent relative to the extension direction of the first guide groove section 154a and connected with one end thereof, and the second guide groove 155 includes a second guide groove section 155a, a second locking groove section 155b which is bent relative to the extension direction of the second guide groove section 155a and connected with one end thereof, wherein the first locking groove section 154b and the second locking groove section 155b are both straight grooves, when the folding joint 1 is located in the unfolded position, the moving member 151 of the pin is simultaneously located in the first locking groove section 154b and the second locking groove section 155b, at this time, the center line of the first locking groove section 154b and the second locking groove section 155b coincides with the line connecting the center of the moving member 151 to the axis center of the concentric axis, and the first auxiliary support rod 13 and the second auxiliary support rod 14 cannot slide relative to the moving member 151, that is, the positions of the first auxiliary support rod 13 and the second auxiliary support rod 14 are locked. At this time, the first main support rod 11 and the second main support rod 12 are stretched to the extreme position, so the position of the moving member 151 is positioned under the action of the first driving groove 152 and the second driving groove 153, so the first auxiliary support rod 13 and the second auxiliary support rod 14 are fixed relative to the first main support rod 11 and the second main support rod 12.

[0029] As attached Figure 4-6As shown, the second guide groove section 155a has an elastic limiter 156 extending outward from a part of the groove wall and forming a limit protrusion 156a at the end, and the limit protrusion 156a is adjacent to the other end of the second guide groove section 155a, and the limit protrusion 156a is partially blocked on the moving path of the moving member 151. During the folding process, the moving member 151 overcomes the limit protrusion 156a and enters the other end of the second guide groove section 155a. At this time, the limit protrusion 156a has an unfolding damping effect on the moving member 151, and the user needs to slightly apply force to rotate the second auxiliary support rod 14 upward to unfold the infant bed, that is, the elastic limiter 156 with the limit protrusion 156a plays a role in positioning the folding position of the entire infant bed.

[0030] As attached Figure 4 As shown, a reinforcing iron sheet 158 ​​is fixed to the first auxiliary support rod 13, and reinforcing iron sheet grooves corresponding to the first guide grooves 154 are respectively provided on the reinforcing iron sheet 158, and the moving member 151 is also inserted in the reinforcing iron sheet groove, so as to enhance the pressure resistance of the entire synchronous rotation mechanism 15 and prevent the synchronous rotation mechanism 15 from being damaged when the entire infant bed is subjected to greater pressure.

[0031] In this embodiment, as shown in the attached Figure 4 As shown, the first driving groove 152 and the second driving groove 153 are straight grooves respectively, and the line connecting the center of the moving member 151 passing through the two driving grooves and the axis center of the concentric axis constitutes a symmetry line. The first driving groove 152 and the second driving groove 153 are symmetrical with respect to the symmetry line, and the moving member 151 approaches or moves away from the concentric axis along a straight line.

[0032] As attached Figure 4 As shown, the synchronous rotation mechanism 15 also includes a slider groove 157 opened on the second main support rod 12, a slider 159 slidably set in the slider groove 157, and a slider positioning member 159a fixed to the cover set on the corresponding slider groove 157 and the slider 159. The slider groove 157 is a cross groove, and the second driving groove 153 is located at the center of the corresponding slider groove 157. A slider positioning member groove corresponding to the second driving groove 153 is opened on the slider positioning member 159a. The moving member 151 passes through the slider 159 and is inserted into the slider positioning member groove, so that the entire moving member 151 can stably slide in the driving groove when the infant bed is unfolded or folded, and the center line of the moving member 151 is not twisted.

[0033] When the baby bed is folded or unfolded, the moving member 151 slides in the first driving groove 152, the second driving groove 153, the first guide groove 154 and the second guide groove 155, and the moving member 151 gradually approaches or moves away from the concentric axis in the radial direction.

[0034] The distances from one end to the other end of the first driving groove 152, from one end to the other end of the second driving groove 153, from one end to the other end of the first guide groove 154, and from one end to the other end of the second guide groove 155 gradually shorten to the concentric axis, and intersect with the radial direction of the circle where the axis of the concentric axis is located.

[0035] In this embodiment, as shown in the attached Figure 1-3 As shown, the infant bed also includes: one end of the first bed enclosure rod 2 is rotatably connected to the first auxiliary support rod 13 on each side through the first enclosure rod shaft 21, and one end of the second bed enclosure rod 3 is rotatably connected to the second auxiliary support rod 14 on each side through the second enclosure rod shaft 31. A first one-way rotation joint 22 is provided between the other ends of the first bed enclosure rods 2 on both sides, and a second one-way rotation joint 32 is provided between the other ends of the second bed enclosure rods 3 on both sides.

[0036] The first rod axis 21 is arranged parallel to the rotation axis on the first one-way rotation joint 22 and is arranged perpendicular to the coaxial axis in space, and the second rod axis 31 is arranged parallel to the rotation axis on the second one-way rotation joint 32 and is also arranged perpendicular to the coaxial axis in space. The first one-way rotation joint 22 and the second one-way rotation joint 32 are prior art and are not described in detail.

[0037] In this embodiment, as shown in the attached Figure 1-3 As shown, the infant bed also includes: a central support frame 4 arranged between the first main support rods 11 on both sides and the second main support rods 12 on both sides, wherein the central support frame 4 causes the four to move together or move away from each other synchronously, and the central support frame 4 includes a central seat 41 in the middle, and four groups of connecting rod mechanisms 42 arranged around the central seat 41, wherein the central seat 41 is a cross seat divided into an upper and lower part, formed in one piece, and four upper and lower symmetrical bottom shaft pivots are respectively arranged at the upper and lower parts; the four groups of connecting rod mechanisms 42 are respectively connected between the two first main support rods 11, the two second main support rods 12 and the central seat 41.

[0038] Each group of connecting rod mechanisms 42 includes an upper base rod 421 located at the top and a lower base rod 422 located below the upper base rod 421, one end of the upper base rod 421 is connected to the upper part of the center seat 41 around the first bottom axis pivot 411, the other end of the upper base rod 421 is rotatably arranged with the corresponding main support rod through a first ball joint, one end of the lower base rod 422 is connected to the lower part of the center seat 41 around the second bottom axis pivot 412, the other end of the lower base rod 422 is rotatably arranged with the corresponding main support rod through a second ball joint, a flattening upper limit mechanism 413 is arranged between each upper base rod 421 and the center seat 41, and a flattening lower limit mechanism 414 is arranged between each lower base rod 422 and the center seat 41.

[0039] When the center seat 41 moves upward, under the action of the upper bottom rod 421 and the lower bottom rod 422, the two first main support rods 11 and the two second main support rods 12 are driven, and the four move toward the center synchronously. It can also be said that the adjacent first main support rods 11 and the second main support rods 12, the two first main support rods 11, and the two second main support rods 12 are respectively moved closer to each other, thereby driving the synchronous rotation mechanism 15 to realize the folding of the entire infant bed.

[0040] When the center seat 41 moves downward, under the action of the upper bottom rod 421 and the lower bottom rod 422, the two first main support rods 11 and the two second main support rods 12 are driven, and the four are synchronously extended to the surroundings. It can also be said that the adjacent first main support rods 11 and the second main support rods 12, the two first main support rods 11, and the two second main support rods 12 are respectively moved away from each other, thereby driving the synchronous rotation mechanism 15 to realize the unfolding of the entire infant bed, and when the four groups of connecting rods are unfolded to the flattening upper limit mechanism 413 and the flattening lower limit mechanism 414 on the center seat 41, they are stopped by the limit, and the adjacent first main support rods 11 and the second main support rods 12, the two first main support rods 11, and the two second main support rods 12 are unfolded to the extreme position.

[0041] Moreover, when the baby stroller is unfolding or folding, the two folding joints 1 unfold or fold around the concentric axis, driving the two first bed rails 2 to flatten or move together through the first unidirectional rotating joints 22 and the second bed rails 3 to flatten or move together through the second unidirectional rotating joints 32.

[0042] In addition, in the present embodiment, the one-way rotating joint adopted between the two first bed guards 2 and the two second bed guards 3 has only one rotating shaft inside to coordinate the unfolding or folding of the entire infant bed, and a double rotating shaft form may also be adopted. As long as the purpose of synchronously moving upward to unfold or downward to fold with the unfolding or folding of the infant bed can be achieved, it falls within the scope of protection of the present invention.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A folding joint having an unfolded position and a folded position, comprising a first main support rod (11), a second main support rod (12), a first auxiliary support rod (13), and a second auxiliary support rod (14), each of which has one end portion rotatably arranged around a concentric axis, characterized in that: The synchronous rotation mechanism (15) further comprises a moving part (151), a first driving groove (152) provided on the first main support rod (11), a second driving groove (153) provided on the second main support rod (12), a first guide groove (154) provided on the first auxiliary support rod (13), and a second guide groove (155) provided on the second auxiliary support rod (14). The first driving groove (152), the second driving groove (153), the first guiding groove (154) and the second guiding groove (155) are respectively gradually shortened in distance from one end to the other end to the concentric axis. The first driving groove (152) and the second driving groove (153) are straight grooves respectively, a line connecting the center of the moving member (151) and the axis of the concentric axis forms a symmetry line, and the first driving groove (152) and the second driving groove (153) are symmetrical with respect to the symmetry line. The first guide groove (154) comprises a first guide groove section (154a), a first locking groove section (154b) bent relative to the extension direction of the first guide groove section (154a) and connected to one end thereof, the second guide groove (155) comprises a second guide groove section (155a), a second locking groove section (155b) bent relative to the extension direction of the second guide groove section (155a) and connected to one end thereof, the first locking groove section (154b) and the second locking groove section (155b) are straight grooves respectively. When the folding joint (1) is in the process of unfolding or folding, the moving member (151) is inserted into the first driving groove (152), the second driving groove (153), the first guide groove (154) and the second guide groove (155) and slides, and moves radially relative to the axis of the concentric axis, so that the first main support rod (11), the second main support rod (12), the first auxiliary support rod (13) and the second auxiliary support rod (14) rotate among the four components. When the folding joint (1) is in the unfolding position, the moving member (151) is located in the first locking groove section (154b) and the second locking groove section (155b). The center line of the first locking groove section (154b) and the second locking groove section (155b) coincides with the line between the center of the moving member (151) and the axis of the concentric axis. The first guide groove section (154a) and / or the second guide groove section (155a) has an elastic stopper (156) extending outward from a portion of the groove wall and forming a stopper protrusion (156a) at the end, the stopper protrusion (156a) is adjacent to the other end of the first guide groove section (154a) or the other end of the second guide groove section (155a), and the stopper protrusion (156a) is partially blocked on the moving path of the moving member (151). The limiting protrusion (156a) has an expansion damping effect on the moving part (151), and the elastic limiting part (156) having the limiting protrusion (156a) has a folding position positioning effect.

2. The folding joint according to claim 1, characterized in that: The synchronous rotation mechanism (15) further comprises a slider groove (157) provided on the first main support rod (11) or the second main support rod (12), a slider (159) slidably arranged in the slider groove (157), and a slider positioning member (159a) fixed to a cover provided on the corresponding slider groove (157) and the slider (159), wherein the first driving groove (152) or the second driving groove (153) is located at the center of the corresponding slider groove (157), and a slider positioning member groove corresponding to the first driving groove (152) or the second driving groove (153) is provided on the slider positioning member (159a), and the moving member (151) passes through the slider (159) and is inserted into the slider positioning member groove.

3. The folding joint according to claim 1, characterized in that: A reinforcing iron sheet (158) is fixed to the first auxiliary support rod (13) and / or the second auxiliary support rod (14), and the reinforcing iron sheet (158) is respectively provided with reinforcing iron sheet grooves corresponding to the first guide groove (154) and / or the second guide groove (155), and the moving member (151) is also inserted into the reinforcing iron sheet groove.

4. A baby bed comprising the folding joint according to any one of claims 1 to 3, characterized in that: The folding joints (1) are provided with two symmetrical joints on both sides of the infant bed; the first auxiliary support rod (13) on each side is rotatably connected to one end of the first bed enclosure rod (2) via a first enclosure rod shaft (21); the second auxiliary support rod (14) on each side is rotatably connected to one end of the second bed enclosure rod (3) via a second enclosure rod shaft (31); a first one-way rotation joint (22) is provided between the other ends of the first bed enclosure rods (2) on both sides; and a second one-way rotation joint (22) is provided between the other ends of the second bed enclosure rods (3) on both sides. Two one-way rotating joints (32), the first surrounding rod axis (21) is arranged parallel to the rotating axis on the first one-way rotating joint (22) and is arranged perpendicular to the concentric axis in space, the second surrounding rod axis (31) is arranged parallel to the rotating axis on the second one-way rotating joint (32) and is also arranged perpendicular to the concentric axis in space, and a central support frame (4) is arranged between the first main support rods (11) on both sides and the second main support rods (12) on both sides to enable the four to move together or move away from each other synchronously.

5. The infant bed according to claim 4, characterized in that: The central support frame (4) comprises a central seat (41) located in the middle, and four groups of connecting rod mechanisms (42) arranged around the central seat (41), wherein the four groups of connecting rod mechanisms (42) are respectively connected between the two first main support rods (11), the two second main support rods (12) and the central seat (41).

6. The infant bed according to claim 5, characterized in that: Each group of the connecting rod mechanisms (42) comprises an upper bottom rod (421) located at the top and a lower bottom rod (422) located below the upper bottom rod (421); one end of the upper bottom rod (421) is connected to the upper part of the center seat (41) around a first bottom axis pivot (411); the other end of the upper bottom rod (421) is rotatably arranged with the corresponding main support rod through a first ball joint; one end of the lower bottom rod (422) is connected to the lower part of the center seat (41) around a second bottom axis pivot (412); the other end of the lower bottom rod (422) is rotatably arranged with the corresponding main support rod through a second ball joint; a flattening upper limit mechanism (413) is arranged between each of the upper bottom rods (421) and the center seat (41); and a flattening lower limit mechanism (414) is arranged between each of the lower bottom rods (422) and the center seat (41).

Images