Bottom supporting structure of seat

Abstract

The utility model discloses a seat bottom supporting structure which comprises a bottom supporting frame, the two sides of the top of the bottom supporting frame are connected to an upper seat through connecting pieces, the connecting pieces are upwards provided with inserting blocks, the upper portions of the inserting blocks are inserted into a containing cavity of the upper seat, rotating buttons are arranged on the outer sides of the connecting pieces, and limiting holes are formed in the side walls of the upper portions of the inserting blocks. A limiting piece is installed in an inner cavity of the upper portion of the inserting block through a spring, limiting ends on the two sides of the limiting piece extend out of the limiting hole and are used for preventing the inserting block from being disengaged from the containing cavity, the bottom support plays a role in supporting and limiting the upper seat through a connecting piece, and the rotating button is provided with a swing arm facing the limiting piece and used for pushing and pressing the limiting piece inwards. The swing arm faces the side of the limiting piece, and the limiting end, facing the swing arm, of the limiting piece is correspondingly provided with a chamfer, so that the swing arm conveniently pushes and presses the limiting piece inwards.

Description

Technical Field

[0001] This utility model relates to the field of stroller seat technology, specifically to a bottom support structure for a seat. Background Technology

[0002] When taking children out for a stroll or outing, using a stroller can reduce the burden on parents to some extent. Strollers typically consist of a frame and wheels, with a seat with a backrest mounted on the frame. In the prior art, such as patent publication number CN209700776U, a novel stroller with a rotatable seat is disclosed, which includes a stroller frame, front wheels located at the front of the stroller frame, rear wheels located at the rear of the stroller frame, and a rotatable seat mounted on the stroller frame. The stroller frame includes a first push rod, a second push rod, and a rear bracket for mounting the rear wheels. The rotating component is connected to a pivot seat, and the seat can rotate back and forth. However, the seat is not easily disassembled from the stroller frame, which is not conducive to further improving its ease of use. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and to provide a bottom support structure for a seat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bottom support structure for a seat includes a bottom support frame. The top two sides of the bottom support frame are connected to an upper seat via connectors. An insert is provided on the connector facing upwards. The upper part of the insert is inserted into the receiving cavity of the upper seat. A rotary button is provided on the outer side of the connector. A limiting hole is provided on the upper side wall of the insert. A limiting member is installed in the upper inner cavity of the insert via a spring. The limiting ends on both sides of the limiting member extend out of the limiting hole. The limiting ends are used to prevent the insert from falling out of the receiving cavity. A swing arm is provided facing the limiting member and is used to push the limiting member inwards. The side of the swing arm facing the limiting member and the limiting end of the limiting member facing the swing arm are respectively provided with chamfers.

[0006] In some embodiments of this utility model, the upper part of the insert block is provided with a top opening, a top cover is installed on the top opening, the upper inner cavity of the insert block is located inside the top opening, and the limiting hole is connected to the top opening.

[0007] In some embodiments of this utility model, the limiting member has a spring receiving groove for placing the spring on the side away from the swing arm, and the other end of the spring abuts against the upper inner cavity of the insert block.

[0008] In some embodiments of this utility model, the bottom support frame includes a front support and a rear support, and the lower part of the connector is recessed with a receiving space corresponding to the front support and the rear support, and the upper part of the front support and the rear support is installed in the corresponding receiving space.

[0009] In some embodiments of this utility model, the rotary button is mounted on the outside of the connector via a torsion spring, and the connector is provided with a rotation limiter for limiting the rotation angle of the rotary button.

[0010] In some embodiments of this utility model, the outer side of the connector is recessed with a mounting groove, the spring ring of the torsion spring is sleeved on the columnar protrusion of the mounting groove, and the two torsion arms of the torsion spring are respectively arranged in the mounting groove and the rotary button.

[0011] In some embodiments of this utility model, the swing arm includes an extension section located on the upper inner side of the rotary button. The extension section passes through the rotary limiting part, and the end of the extension section is provided with a swing section for pushing the limiting member inward. The mounting groove is provided with a placement part for placing any torsion arm, and the other torsion arm is installed in the groove at the lower part of the extension section.

[0012] In some embodiments of this invention, the rotating buttons on both sides are connected by a rotating rod.

[0013] In some embodiments of this utility model, the connector is provided with a rod hole, the rod hole is located on the columnar boss of the mounting groove, the rotary button is installed at the end of the rotating rod by a fastening screw, a connecting rod is connected between the connectors, the connecting rod passes through a hollow hole, the hollow hole is aligned with the rod hole and used to install the rotating rod.

[0014] In some embodiments of this utility model, the rotating rod is installed inside the sleeve tube, the sleeve tube is connected to the rotating button, the hollow hole has the same diameter as the rod hole, the diameter of the hollow hole is larger than the outer diameter of the sleeve tube, and the sleeve tube is provided with a number of mating parts corresponding to the hollow hole, the outer diameter of the mating parts corresponding to the diameter of the hollow hole.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following advantages:

[0016] Beneficial effects:

[0017] 1. The bottom bracket supports and limits the upper seat through the connector. The upper part of the connector has a limiting device on the insert. The limiting device is locked in the receiving cavity of the upper seat to prevent the insert from coming out of the receiving cavity. Using two connectors helps to improve the connection stability between the bottom bracket and the upper seat.

[0018] 2. A swing arm is provided with the rotation button facing the limiting member to push the limiting member inward. Rotating the rotation button drives the swing arm to rotate. When the swing arm rotates towards the limiting member, it contacts and pushes the limiting member inward. When the swing arm rotates away from the limiting member, the limiting member returns to its original position under the action of the spring. This makes it easy to assemble and disassemble the bottom support frame and the upper seat, making it convenient to use and store, and improving its ease of use.

[0019] 3. The two rotary buttons are connected by a rotary rod. When the user rotates either rotary button, the two rotary buttons will rotate synchronously, making it more convenient to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 For the present utility model Figure 1 Enlarged view of A;

[0023] Figure 3 This is a schematic diagram showing the arrangement of the connectors of this utility model;

[0024] Figure 4 For the present utility model Figure 3 Enlarged image of B

[0025] Figure 5 This is a schematic diagram of the structure of the rotary button of this utility model;

[0026] Figure 6 This is a cross-sectional schematic diagram of the present invention;

[0027] Figure 7 For the present utility model Figure 6 C-enlarged image

[0028] Figure 8 This is a schematic diagram of the arrangement of the sleeve tube of this utility model;

[0029] Explanation of key figure labels:

[0030] 1. Bottom support frame; 10. Front support; 11. Rear support; 12. Through hole; 2. Connector; 20. Insert block; 21. Top cover; 22. Limiting hole; 23. Connecting rod; 24. Rod hole; 25. Rotation limiting part; 26. Mounting groove; 27. Placement part; 28. Accommodation space; 3. Limiting part; 30. Limiting end; 31. Spring; 32. Spring receiving groove; 4. Rotating button; 40. Extension section; 41. Swing arm; 42. Torsion spring; 43. Torsion arm; 44. Swing section; 45. Chamfer; 46. Groove; 47. Fastening screw; 48. Limiting protrusion; 5. Rotating rod; 50. Sleeve tube; 51. Fitting part; 52. Tube opening; 53. Limiting recess; 6. Upper seat; 60. Upper shell; 61. Lower shell; 62. Accommodation opening. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0033] Unless otherwise expressly defined, in the claims, description and accompanying drawings of this utility model, the use of directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" to indicate orientation or positional relationship is based on the orientation and positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0034] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0035] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0036] Example 1, see Figure 1-8 :

[0037] A bottom support structure for a seat includes a bottom support frame 1. Connectors 2 are provided on both sides of the top of the bottom support frame 1. The bottom support frame 1 is connected to an upper seat 6 via the connectors 2, and the bottom support frame 1 provides support for the upper seat 6. Specifically, an insert 20 is provided on the upward-facing side of each connector 2. The upper part of the insert 20 is inserted into the receiving cavity of the upper seat 6. A limiting member 3 is provided on the upper part of the insert 20, which is engaged within the receiving cavity to prevent the insert 20 from dislodging. It is understood that there are two connectors 2.

[0038] In one embodiment, the upper seat 6 includes an upper shell 60 and a lower shell 61, which are connected by screws. The lower shell 61 has an opening 62, and the inside of the opening 62 is a cavity.

[0039] The upper side wall of the insert 20 is provided with a limiting hole 22. The upper inner cavity of the insert 20 is fitted with a limiting member 3 by a spring 31. The limiting ends 30 on both sides of the limiting member 3 extend out of the limiting hole 22. The limiting ends 30 are used to prevent the insert 20 from coming out of the receiving cavity.

[0040] In one embodiment, the insert 20 has a top opening at its upper part, and a top cover 21 is installed on the top opening. The upper inner cavity of the insert 20 is located inside the top opening, and the limiting hole 22 communicates with the top opening to facilitate the placement and installation of the limiting member 3. Preferably, there are two limiting holes 22, which are symmetrically arranged on the two side walls of the upper part of the insert 20.

[0041] A rotary button 4 is provided on the outer side of the connecting member 2. The rotary button 4 faces the limiting member 3 and has a swing arm 41 for pushing the limiting member 3 inward. When the user rotates the rotary button 4, the swing arm 41 rotates towards the limiting member 3, contacting and pushing the limiting member 3 inward. When the rotary button 4 returns to its original position, the swing arm 41 rotates away from the limiting member 3, and the limiting member 3 resets under the action of the spring 31, making it easy to assemble and disassemble the bottom support frame 1 and the upper seat 6. It is understood that the spring 31 is located on the side of the limiting member 3 away from the swing arm 41.

[0042] The limiting member 3 has a recessed spring receiving groove 32 on the side away from the swing arm 41 for placing the spring 31, and the other end of the spring 31 abuts against the upper inner cavity of the insert block 20. During installation, first insert one end of the spring 31 into the spring receiving groove 32, and then insert the limiting member 3 into the upper inner cavity of the insert block 20, so that the limiting end 30 of the limiting member 3 extends out of the limiting hole 22.

[0043] The side of the swing arm 41 facing the limiting member 3 and the limiting end 30 of the limiting member 3 facing the swing arm 41 are both provided with chamfers 45, so that the swing arm 41 can push the limiting member 3 inward.

[0044] In one embodiment, the rotary button 4 is mounted on the outside of the connector 2 via a torsion spring 42, and the connector 2 is provided with a rotation limiting part 25 for limiting the rotation angle of the rotary button 4. Preferably, the rotation limiting part 25 is a rotation limiting groove.

[0045] In one embodiment, the connector 2 has a recessed mounting groove 26 on its outer side, the spring ring of the torsion spring 42 is sleeved on the columnar protrusion of the mounting groove 26, and the two torsion arms 43 of the torsion spring 42 are respectively arranged in the mounting groove 26 and the rotary button 4.

[0046] In one embodiment, the swing arm 41 includes an extension section 40 located on the upper inner side of the rotary button 4. The extension section 40 passes through the rotation limiting part 25. The end of the extension section 40 is provided with a swing section 44 for pushing the limiting member 3 inward. The chamfer 45 on the swing arm 41 is arranged in the swing section 44. The mounting groove 26 is provided with a placement part 27 for placing any torsion arm 43. The other torsion arm 43 is installed in the groove 46 at the lower part of the extension section 40.

[0047] In one implementation, the two rotary buttons 4 are connected by a rotary rod 5. When the user rotates either rotary button 4, the two rotary buttons 4 rotate synchronously, making it more convenient to use.

[0048] In one embodiment, the connector 2 is provided with a rod hole 24, which is located on the columnar boss of the mounting groove 26. The rotating button 4 is installed at the end of the rotating rod 5 by a fastening screw 47. A connecting rod 23 is provided between the two connectors 2, and the connecting rod 23 has a hollow hole through it, which is aligned with the rod hole 24 to facilitate the installation of the rotating rod 5. One end of the rotating rod 5 passes through the rod hole 24 and enters the connecting rod 23, and exits from the other end of the connecting rod 23. It can be understood that the connecting rod 23 helps to improve the stability of the structure and protects the internal rotating rod 5. The rod hole 24 is located on the columnar boss.

[0049] In one embodiment, the rotating rod 5 is installed inside the sleeve tube 50, which is connected to the rotating button 4. The hollow hole has the same diameter as the rod hole 24, but the diameter of the hollow hole is larger than the outer diameter of the sleeve tube 50. The sleeve tube 50 is provided with several mating parts corresponding to the hollow hole, and the outer diameter of the mating parts corresponds to the diameter of the hollow hole. Preferably, the mating parts 51 and the hollow hole of the connecting rod 23 are in clearance fit, and there are two mating parts 51.

[0050] In one embodiment, the end of the sleeve tube 50 is provided with a limiting recess 53, and the rotating button 4 is provided with a limiting protrusion 48 corresponding to the limiting recess 53. When the rotating button 4 is installed with the sleeve tube 50, the limiting protrusion 48 of the rotating button 4 is inserted into the limiting recess 53 of the sleeve tube 50.

[0051] In one embodiment, the sleeve tube 50 has several tube openings 52 along its length. These openings serve as observation windows to facilitate the installation of the rotating rod 5. Simultaneously, the openings reduce material usage, thereby lightening the weight of the sleeve tube 50 and making the entire device more portable. Preferably, the tube openings 52 are located between two mating parts 51.

[0052] In one embodiment, the bottom support frame 1 includes a front support 10 and a rear support 11. The lower part of the connector 2 is recessed with a receiving space 28 corresponding to the front support 10 and the rear support 11. The upper parts of the front support 10 and the rear support 11 are installed in the corresponding receiving spaces 28. It can be understood that the upper parts of the front support 10 and the rear support 11 are provided with through holes 12, and the sleeve tube 50 passes through the through holes 12.

[0053] In one embodiment, the upper seat 6 is a child stroller seat, including a bottom support frame 1 with casters at the bottom.

[0054] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A bottom support structure for a seat, characterized in that: The bottom support frame (1) is connected to the upper seat (6) on both sides of the top of the bottom support frame (1) via connectors (2). The connectors (2) are provided with inserts (20) facing upwards. The upper part of the inserts (20) is inserted into the receiving cavity of the upper seat (6). A rotating button (4) is provided on the outside of the connectors (2). The upper side wall of the inserts (20) is provided with limit holes (22). The upper inner cavity of the inserts (20) is fitted with limiters via springs (31). (3) The limiting ends (30) on both sides of the limiting member (3) extend out of the limiting hole (22). The limiting ends (30) are used to prevent the insert (20) from coming out of the receiving cavity. The rotating button (4) is facing the limiting member (3) and a swing arm (41) is provided to push the limiting member (3) inward. The side of the swing arm (41) facing the limiting member (3) and the limiting end (30) of the limiting member (3) facing the swing arm (41) are respectively provided with a chamfer (45).

2. The bottom support structure of a seat according to claim 1, characterized in that: The upper part of the insert (20) is provided with a top opening, and a top cover (21) is installed on the top opening. The upper inner cavity of the insert (20) is located inside the top opening, and the limiting hole (22) is connected to the top opening.

3. The bottom support structure of a seat according to claim 1, characterized in that: The limiting member (3) has a spring receiving groove (32) for placing the spring (31) on the side away from the swing arm (41), and the other end of the spring (31) abuts against the upper inner cavity of the insert (20).

4. The bottom support structure of a seat according to claim 3, characterized in that: The bottom support frame (1) includes a front support (10) and a rear support (11). The lower part of the connector (2) is recessed with a receiving space (28) corresponding to the front support (10) and the rear support (11). The upper parts of the front support (10) and the rear support (11) are installed in the corresponding receiving space (28).

5. The bottom support structure of a seat according to any one of claims 1-4, characterized in that: The rotary button (4) is mounted on the outside of the connector (2) via a torsion spring (42), and the connector (2) is provided with a rotation limit part (25) for limiting the rotation angle of the rotary button (4).

6. The bottom support structure of a seat according to claim 5, characterized in that: The connector (2) has a recessed mounting groove (26) on the outside. The spring ring of the torsion spring (42) is sleeved on the columnar protrusion of the mounting groove (26). The two torsion arms (43) of the torsion spring (42) are respectively arranged in the mounting groove (26) and the rotary button (4).

7. The bottom support structure of a seat according to claim 6, characterized in that: The swing arm (41) includes an extension section (40) located on the upper inner side of the rotary button (4). The extension section (40) passes through the rotation limit part (25). The end of the extension section (40) is provided with a swing section (44) for pushing the limit member (3) inward. The mounting groove (26) is provided with a placement part (27) for placing any torsion arm (43). The other torsion arm (43) is installed in the groove (46) at the lower part of the extension section (40).

8. The bottom support structure of a seat according to claim 7, characterized in that: The two rotary buttons (4) are connected by a rotary rod (5).

9. The bottom support structure of a seat according to claim 8, characterized in that: The connector (2) is provided with a rod hole (24), which is located on the columnar boss of the mounting groove (26). The rotating button (4) is installed at the end of the rotating rod (5) by a fastening screw (47). A connecting rod (23) is connected between the connectors (2). The connecting rod (23) has a hollow hole through it. The hollow hole is aligned with the rod hole (24) and is used to install the rotating rod (5).

10. The bottom support structure of a seat according to claim 9, characterized in that: The rotating rod (5) is installed inside the sleeve tube (50), which is connected to the rotating button (4). The hollow hole has the same diameter as the rod hole (24), and the diameter of the hollow hole is larger than the outer diameter of the sleeve tube (50). The sleeve tube (50) is provided with several mating parts corresponding to the hollow hole, and the outer diameter of the mating parts corresponds to the diameter of the hollow hole.

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