Folding baby stroller seat

Abstract

The present invention discloses a foldable baby stroller seat, comprising a seat frame body and a supporting seat plate, wherein the seat frame body is composed of an upper supporting frame, a lower supporting frame installed and connected to the lower ends of both sides of the upper supporting frame, an armrest frame installed and connected between the upper supporting frame and the lower supporting frame at both ends, and a connecting frame rotatably connected to the bottom ends of both sides of the armrest frame; the middle of the two inner ends of the armrest frame is rotatably connected with a supporting plate, and the other end of each side support plate is rotatably connected to the inner wall of the lower end of the upper supporting frame on the same side, and a first rotating shaft and a second rotating shaft are formed on the two side walls of the supporting seat plate at the front and rear ends respectively. By turning or releasing the turning body, the rotation between the main rotating box and the auxiliary rotating box can be adjusted, driving the upper supporting frame and the lower supporting frame to be stretched or folded, thereby unfolding or folding the seat frame body. When applied in practice, the unfolding or folding activity of the seat is fast and convenient, and the folding degree is good.

Description

Technical Field

[0001] The invention belongs to the technical field of baby carriages, and in particular relates to a foldable seat for a baby carriage. Background Art

[0002] Infant dining chairs, baby strollers and other infant supplies are widely used in the daily life of raising infants. There are many different types of such infant supplies on the market according to their functional classification, among which foldable baby strollers are very popular among consumers. Foldable baby strollers usually have a foldable frame for storage, but the seat frame of existing baby strollers cannot be folded and is usually folded together with the frame. The folding method requires unlocking multiple retaining structures and then folding, which is not very fast. In addition, the folding range of the seat is small, resulting in a low degree of folding. Summary of the invention

[0003] The object of the present invention is to provide a foldable seat for a baby stroller to solve the problems mentioned in the above background technology.

[0004] The technical solution adopted by this invention to achieve the above-mentioned purpose is:

[0005] The foldable seat of a baby stroller comprises a seat frame body and a supporting seat plate, wherein the seat frame body is composed of an upper support frame, a lower support frame installed and connected to the lower ends of both sides of the upper support frame, an armrest frame installed and connected between the upper support frame and the lower support frame at both ends, and a connecting frame rotatably connected to the bottom ends of both sides of the armrest frame. The upper support frame is in the shape of a U-shaped frame as a whole, and a straight tube is formed on the lower side of the two ends, and a main rotating box connected as a whole is formed at the lower end of the straight tube. A pulling body is movably arranged at the center of the upper front side of the upper support frame, and a traction rope is arranged on the front wall of the upper support frame. The middle part of the upper end of the traction rope is fixedly connected to the pulling body, and the lower ends of the two sides of the traction rope extend and are respectively embedded in the two sides of the upper support frame. In the main rotating box, the top end of the lower supporting frame is formed with a secondary rotating box connected as an integral body, the middle part of the outer wall of the secondary rotating box is formed with a main rotating hole, the outer wall periphery of the secondary rotating box is formed with a convex rotating rail having a common central axis with the main rotating shaft, the middle part of the inner wall of the main rotating box is formed with a main rotating shaft which is aligned with the main rotating hole, the inner wall of the main rotating box is formed with a rotating groove which is aligned with the convex rotating rail, the middle part of the outer wall of the secondary rotating box is formed with a sliding groove around the rotating hole, the inner wall of the main rotating box is formed with a sliding column which is aligned with the sliding groove, the main rotating box and the secondary rotating box are rotatably connected by being embedded in the convex rotating rail through the rotating groove, and the main rotating shaft is embedded in the main rotating hole, and the sliding column is embedded in the sliding groove;

[0006] A cylindrical cavity is formed in the middle of the top end of the main rotating box, which passes through from top to bottom. A columnar cavity is formed in the upper part of the cylindrical cavity. A limit column is slidably embedded in the cylindrical cavity. A return spring is embedded in the columnar cavity. The bottom end of the return spring is fixedly connected to the top edge of the limit column. The lower end of the traction rope is embedded in the cylindrical cavity and fixedly connected to the middle of the top end of the limit column. An interlocking cavity is formed in the middle of the upper end of the auxiliary rotating box, which is interlocked with the limit column.

[0007] The middle parts of the two inner ends of the armrest frame are rotatably connected with a support plate, and the other end of each side support plate is rotatably connected to the inner wall of the lower end of the upper support frame on the same side, and the first rotating shaft and the second rotating shaft are respectively formed on the front and rear ends of the two side walls of the supporting seat plate, and the lower end of the lower support frame is formed with a first rotating hole that matches the relative position of the first rotating shaft, and the lower end of the connecting frame is formed with a second rotating hole that matches the relative position of the second rotating shaft, the lower end of the lower support frame is rotatably connected to the first rotating shaft through the first rotating hole, and the connecting frame is rotatably connected to the second rotating shaft through the second rotating hole.

[0008] It is further explained that when the pulling body is pulled upward, the traction rope is pulled upward, the limiting columns in the main rotating boxes on both sides of the upper support frame are synchronously lifted upward in the cylindrical cavity, and the return spring is in a compressed state; when the pulling body is not pulled, the return spring is in a non-compressed state, and the lower ends of the limiting columns in the main rotating boxes on both sides of the upper support frame extend out of the cylindrical cavity to the outside of the main rotating box.

[0009] It is further explained that when the straight tubes at both ends of the upper support frame are parallel to the lower support frame on the same side and are on the same axial line, the bottom end of the limit column in the main rotating box is embedded in the interlocking cavity of the auxiliary rotating box under the action of the reset spring, and the support plate and the connecting frame are rotated to the maximum extent of expansion.

[0010] It is further explained that when the straight tubes at both ends of the upper support frame are folded toward each other to be parallel with the lower support frame on the same side, the sliding column in the main rotating box rotates to the maximum extent in the sliding groove of the auxiliary rotating box, and the supporting seat plate is parallel to the lower support frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By moving or releasing the moving body, the rotation between the main rotating box and the auxiliary rotating box can be adjusted, driving the upper support frame and the lower support frame to expand or fold, thereby expanding or folding the main body of the seat frame. When used in practice, the expansion or folding of the seat is fast and convenient, and the folding degree is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure between the main turret box and the auxiliary turret box in the present invention;

[0016] Figure 3 It is a structural schematic diagram of the main rotating box and the auxiliary rotating box when the upper supporting frame and the lower supporting frame are folded in the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the present invention in a folded state;

[0018] Among them: 1. seat frame body; 2. supporting seat plate; 3. upper supporting frame; 4. lower supporting frame; 5. handrail frame; 6. connecting frame; 7. straight tube; 8. main rotating box; 9. pulling body; 10. traction rope; 11. auxiliary rotating box; 12. main rotating hole; 13. convex turning rail; 14. main rotating shaft; 15. rotating groove; 16. sliding groove; 17. sliding column; 18. cylindrical cavity; 19. column base cavity; 20. limiting column; 21. reset spring; 22. fitting cavity; 23. support plate; 24. first rotating shaft; 25. second rotating shaft; 26. first rotating hole; 27. second rotating hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 4 , the present invention provides the following technical solutions:

[0021] A foldable seat for a baby stroller includes a seat frame body 1 and a supporting seat plate 2. The seat frame body 1 is composed of an upper support frame 3, a lower support frame 4 installed and connected to the lower ends of both sides of the upper support frame 3, an armrest frame 5 installed and connected between the upper support frame 3 and the lower support frame 4 at both ends, and a connecting frame 6 rotatably connected to the bottom ends of both sides of the armrest frame 5. The upper support frame 3 is in the shape of a U-shaped frame as a whole. A straight tube 7 is formed on the lower side of both ends. A main rotating box 8 connected as one body is formed at the lower end of the straight tube 7. A pulling body 9 is movably provided at the center of the upper front side of the upper support frame 3. A traction rope 10 is provided on the front wall of the upper support frame 3. The middle part of the upper end of the traction rope 10 is fixedly connected to the pulling body 9. The lower ends of the two sides of the traction rope 10 extend and are respectively embedded in the main rotating boxes 8 on both sides of the upper support frame 3. The top of the lower support frame 4 is formed with an auxiliary rotating box connected as one body. The box 11, a main rotation hole 12 is formed in the middle of the outer wall of the auxiliary rotation box 11, and a convex rotation rail 13 with a common central axis with the main rotation shaft 14 is formed on the periphery of the outer wall of the auxiliary rotation box 11. A main rotation shaft 14 is formed in the middle of the inner wall of the main rotation box 8 to be aligned with the main rotation hole 12. A rotating groove 15 is formed on the inner wall of the main rotation box 8 to be aligned with the convex rotation rail 13. A sliding groove 16 is formed in the middle of the outer wall of the auxiliary rotation box 11 on the periphery of the rotation hole, and a sliding column 17 is formed on the inner wall of the main rotation box 8 to be aligned with the sliding groove 16. The main rotation box 8 and the auxiliary rotation box 11 are rotationally connected by the rotation groove 15 being rotatably embedded in the convex rotation rail 13, and the main rotation shaft 14 being embedded in the main rotation hole 12. The sliding column 17 is embedded in the sliding groove 16, and the main rotation box 8 and the auxiliary rotation box 11 are rotated by the convex rotation rail 13 in the rotation groove 15.

[0022] A cylindrical cavity 18 is formed in the middle of the top end of the main rotating box 8, and a column base cavity 19 is formed in the upper part of the cylindrical cavity 18. A limit column 20 is slidably embedded in the cylindrical cavity 18, and a return spring 21 is embedded in the column base cavity 19. The bottom end of the return spring 21 is fixedly connected to the top edge of the limit column 20. The lower end of the traction rope 10 is embedded in the cylindrical cavity 18 and fixedly connected to the middle of the top end of the limit column 20. A fitting cavity 22 is formed in the middle of the upper end of the auxiliary rotating box 11, which is relatively fitted with the limit column 20.

[0023] A support plate 23 is rotatably connected to the middle of the two inner ends of the armrest frame 5, and the other end of the support plate 23 on each side is rotatably connected to the inner wall of the lower end of the upper support frame 3 on the same side. A first rotating shaft 24 and a second rotating shaft 25 are respectively formed on the two side walls of the supporting seat plate 2 at the front and rear ends. A first rotating hole 26 is formed at the lower end of the lower support frame 4 and is relatively matched with the first rotating shaft 24. A second rotating hole 27 is formed at the lower end of the connecting frame 6 and is relatively matched with the second rotating shaft 25. The lower end of the lower support frame 4 is rotatably connected to the first rotating shaft 24 through the first rotating hole 26, and the connecting frame 6 is rotatably connected to the second rotating shaft 25 through the second rotating hole 27.

[0024] Among them, when the pulling body 9 is pulled upward, the traction rope 10 is pulled upward, and the limiting columns 20 in the main rotating boxes 8 on both sides of the upper support frame 3 are synchronously lifted upward in the cylindrical cavity 18, and the return spring 21 is in a compressed state; when the pulling body 9 is not pulled, the return spring 21 is in a non-compressed state, and the lower ends of the limiting columns 20 in the main rotating boxes 8 on both sides of the upper support frame 3 extend out of the cylindrical cavity 18 to the outside of the main rotating box 8; when the straight tubes 7 at both ends of the upper support frame 3 are parallel to the lower support frame 4 on the same side and are on the same axial line, the bottom ends of the limiting columns 20 in the main rotating box 8 are embedded in the interlocking cavity 22 of the auxiliary rotating box 11 under the action of the return spring 21, and the support plate 23 and the connecting frame 6 are rotated to the maximum extent of expansion; when the straight tubes 7 at both ends of the upper support frame 3 are folded toward each other and parallel to the lower support frame 4 on the same side, the sliding column 17 in the main rotating box 8 rotates to the maximum extent in the sliding groove 16 of the auxiliary rotating box 11, supporting the seat plate 2 to be parallel to the lower support frame 4.

[0025] In actual application, when folding is required, the pulling body 9 is pulled upward to make the limiting column 20 disengage from the interlocking cavity 22 of the auxiliary rotating box 11, and the upper support frame 3 and the lower support frame 4 are rotated toward each other and folded, and the pulling body 9 can be released, and the upper support frame 3 and the lower support frame 4 are continued to be folded toward each other to the maximum extent, and the seat frame main body 1 and the supporting seat plate 2 are completed folding; when the seat frame main body 1 and the supporting seat plate 2 need to be unfolded, the upper support frame 3 and the lower support frame 4 are unfolded in reverse to the maximum extent, so that the limiting column 20 in the main rotating box 8 is embedded in the interlocking cavity 22 of the auxiliary rotating box 11, and the unfolding between the seat frame main body 1 and the supporting seat plate 2 is completed.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A foldable baby stroller seat, comprising a seat frame body (1) and a supporting seat plate (2), characterized in that: The seat frame body (1) is composed of an upper support frame (3), a lower support frame (4) installed and connected to the lower ends of both sides of the upper support frame (3), an armrest frame (5) installed and connected between the upper support frame (3) and the lower support frame (4) at both ends, and a connecting frame (6) rotatably connected to the bottom ends of both sides of the armrest frame (5). The upper support frame (3) is in the shape of a U-shaped frame as a whole, and a straight tube (7) is formed at the lower side of both ends. The lower end of the straight tube (7) is formed with a main rotating box (8) connected as a whole. A pull body (9) is movably arranged at the center of the upper front side of the upper support frame (3), and a traction rope (10) is arranged on the front wall of the upper support frame (3). The middle part of the upper end of the traction rope (10) is fixedly connected to the pull body (9), and the lower ends of both sides of the traction rope (10) extend and are respectively embedded in the main rotating boxes (8) on both sides of the upper support frame (3). The top end of the lower support frame (4) is formed with an integrally connected auxiliary rotating box (11), and the outer wall of the auxiliary rotating box (11) is A main rotating hole (12) is formed on the outer wall of the auxiliary rotating box (11), and a convex rotating rail (13) having a common central axis with the main rotating shaft (14) is formed on the outer wall of the auxiliary rotating box (11). A main rotating shaft (14) which is aligned with the main rotating hole (12) is formed in the middle of the inner wall of the main rotating box (8). A rotating groove (15) which is aligned with the convex rotating rail (13) is formed on the inner wall of the main rotating box (8). A sliding groove (16) is formed on the outer wall of the auxiliary rotating box (11) at the circumference of the rotating hole. The inner side wall of the main rotating box (8) is formed with a sliding column (17) which is relatively engaged with the sliding groove (16); the main rotating box (8) and the auxiliary rotating box (11) are connected to each other by rotating the rotating groove (15) and embedding the convex rotating rail (13); the main rotating shaft (14) is embedded in the main rotating hole (12); the sliding column (17) is embedded in the sliding groove (16); a columnar cavity (18) which is through from top to bottom is formed in the middle of the top of the main rotating box (8); the upper part of the columnar cavity (18) is shaped like a A column platform cavity (19) is formed, a limit column (20) is slidably embedded in the column cavity (18), a return spring (21) is embedded in the column platform cavity (19), the bottom end of the return spring (21) is fixedly connected to the top edge of the limit column (20), the lower end of the traction rope (10) is embedded in the column cavity (18) and is fixedly connected to the middle of the top of the limit column (20), and an interlocking cavity (22) is formed in the middle of the upper end of the auxiliary rotating box (11) and is interlocked with the limit column (20); The middle parts of the two inner ends of the armrest frame (5) are rotatably connected with a support plate (23), and the other end of each side support plate (23) is rotatably connected to the inner wall of the lower end of the upper support frame (3) on the same side. The two side walls of the support seat plate (2) are respectively formed with a first rotating shaft (24) and a second rotating shaft (25) at the front and rear ends. The lower end of the lower support frame (4) is formed with a first rotating hole (26) that matches the first rotating shaft (24) in a relative position, and the lower end of the connecting frame (6) is formed with a second rotating hole (27) that matches the second rotating shaft (25) in a relative position. The lower end of the lower support frame (4) is rotatably connected to the first rotating shaft (24) through the first rotating hole (26), and the connecting frame (6) is rotatably connected to the second rotating shaft (25) through the second rotating hole (27); when the pulling body (9) is pulled upward, the traction body (9) is pulled upward. When the guide rope (10) is pulled upward, the limiting columns (20) in the main rotating boxes (8) on both sides of the upper support frame (3) are synchronously lifted upward in the cylindrical cavity (18), and the reset spring (21) is in a compressed state; when the pulling body (9) is not pulled, the reset spring (21) is in a non-compressed state, and the lower ends of the limiting columns (20) in the main rotating boxes (8) on both sides of the upper support frame (3) extend out of the cylindrical cavity (18) to the outside of the main rotating boxes (8); when the straight tubes (7) at both ends of the upper support frame (3) are parallel to the lower support frame (4) on the same side and are on the same axial line, the bottom ends of the limiting columns (20) in the main rotating boxes (8) are embedded in the interlocking cavity (22) of the auxiliary rotating box (11) under the action of the reset spring (21), and the support plate (23) and the connecting frame (6) are rotated to the maximum extent of expansion.

2. A foldable baby stroller seat according to claim 1, characterized in that: When the straight tubes (7) at both ends of the upper support frame (3) are folded toward each other and are parallel to the lower support frame (4) on the same side, the sliding column (17) in the main rotating box (8) rotates to the maximum extent in the sliding groove (16) of the auxiliary rotating box (11), and the supporting seat plate (2) is parallel to the lower support frame (4).

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