Bidirectional folding unlocking mechanism and seat and stroller comprising same

Abstract

The utility model provides a two-way folding unlocking mechanism which is used for applying unlocking force to an unlocking piece on a child stroller and comprises a first rotating piece, a second rotating piece and a third rotating piece, the first rotating piece can rotate between a first position and a second position, the first rotating piece is provided with a pushing part and a first inclined face, and the second rotating piece is provided with a second inclined face. The first inclined surface extends and protrudes from the first position to the second position; and the second rotating piece can rotate between a third position and a fourth position, the second rotating piece is provided with a second inclined surface, and the second inclined surface extends and protrudes from the third position to the fourth position. When the first rotating piece rotates to the second position, the first inclined face is tangent to the unlocking piece to apply acting force to the unlocking piece. The second rotating piece rotates from the third position to the fourth position, and the second inclined face is tangent to the pushing part and applies acting force to the pushing part. No matter whether the first rotating piece or the second rotating piece is rotated, unlocking force can be applied to the unlocking piece, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to a children's travel tool, in particular to a two-way folding and unlocking mechanism and a seat and a child stroller comprising the same. Background Art

[0002] In daily life, baby strollers can save adults' physical energy, while children can also ride in them comfortably, and are deeply loved by consumers. Some existing baby stroller products can fold the entire vehicle without disassembling the seat and frame. Furthermore, there are a few such products that can unlock and fold the frame by operating only the seat, that is, there is no need to unlock the seat and frame separately before folding the entire vehicle. However, during daily use, the direction of the seat relative to the frame is generally adjusted dynamically according to needs, and the seat may face forward or backward when folded. Existing baby strollers can only unlock the frame by folding the backrest, or only by folding the seat plate, which is inconvenient to operate. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the problem in the prior art that the frame of a child stroller can only be unlocked by folding the backrest or by folding the seat plate, and the folding of the entire stroller is not convenient enough. A two-way folding and unlocking mechanism, a seat and a child stroller including the same are provided.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] When the first rotating member is rotated to the first position, the pushing portion corresponds to the position of the unlocking member, and when the first rotating member is rotated to the second position, the first inclined surface contacts the unlocking member and pushes the unlocking member, so that the unlocking member moves in a predetermined direction; and a second rotating member, wherein the second rotating member is rotated between a third position and a fourth position, the second rotating member is provided with a second inclined surface, and the second inclined surface extends from the third position to the fourth position. When the first rotating member is rotated to the first position and the second rotating member is rotated to the fourth position, the second inclined surface contacts the pushing portion and pushes the pushing portion, so that the pushing portion pushes the unlocking member to move in a predetermined direction.

[0006] In this embodiment, the first rotating member can rotate about its axis, and in particular, can rotate between a first position and a second position, and the second rotating member can rotate about its axis, and in particular, can rotate between a third position and a fourth position. When the second rotating member is not rotating and the first rotating member rotates to the second position, since the first inclined surface is arranged to gradually rise from the first position to the second position, the first inclined surface is tangential to the unlocking member during movement and applies a force to the unlocking member as the first rotating member rotates, causing the unlocking member to move in the unlocking direction under the push of the first inclined surface to achieve unlocking. When the first rotating member is in the first position, that is, the first rotating member is not rotating, and the second rotating member rotates from the third position to the fourth position, since the second inclined surface is arranged to gradually rise from the third position to the fourth position, the second inclined surface is tangential to the pushing portion during movement and applies a force to the pushing portion as the second rotating member rotates, causing the pushing portion to move toward the unlocking member under the push of the second inclined surface, and then the unlocking member moves in the unlocking direction under the push of the pushing portion to achieve unlocking. When operating the bidirectional folding and unlocking mechanism, whether rotating the first rotating member or the second rotating member, the unlocking force can be applied to the unlocking member, making the operation more convenient and simple.

[0007] Preferably, the first rotating member and the second rotating member are coaxially rotatably connected.

[0008] In this solution, the above-mentioned structural form is adopted, the first rotating member and the second rotating member are coaxially rotatably connected, the folding and unlocking mechanism has a high degree of integration, a small volume, simple manufacturing and low cost.

[0009] Preferably, the pushing portion includes a accommodating tube, a rod body and a return spring, the rod body includes a first end and a second end, the diameter of the first end is smaller than the diameter of the second end, the first end is located in the accommodating tube, and the second end abuts against the second rotating member. A limiting portion is provided at one end of the accommodating tube facing the unlocking member, and the return spring is sleeved on the first end and located between the limiting portion and the second end.

[0010] In this solution, using the above-described structure, the return spring is retained between the stopper and the second end. When the second rotating member rotates from the third position to the fourth position, the rod body can move along the second end toward the first end. When the second rotating member rotates from the fourth position to the third position, the rod body, under the elastic force of the return spring, can move along the first end toward the second end. In other words, as the second rotating member rotates back and forth, the push portion can achieve reciprocating motion between ejection and return. This push portion has a simple structure and low manufacturing cost.

[0011] Preferably, the second end is pressed by the second rotating member to form a clearance fit with the inner wall of the accommodating tube.

[0012] In this embodiment, the above-described structure allows the second end to maintain a clearance fit with the inner wall of the accommodating tube under the pressure of the second rotating member, regardless of whether the second rotating member is in the third or fourth position. This prevents the rod from deflecting due to friction during rotation of the second rotating member, which could prevent the rod from moving in the intended direction. This structure eliminates the need for an additional limiting mechanism to maintain rod stability and simplifies the structure.

[0013] Preferably, a first groove is provided on a side of the first rotating member facing the unlocking member, the pushing portion is provided at the bottom of the first groove, and the first inclined surface extends from the bottom of the first groove to the notch of the first groove.

[0014] In this solution, the above-mentioned structural form is adopted, and the first rotating member is provided with a groove-shaped side facing the unlocking member, and the first inclined surface extends from the bottom of the groove to the surface of this side. Compared with the setting in which the first inclined surface protrudes from the surface of the first rotating member, it is more beautiful and saves more space.

[0015] Preferably, a second groove is provided on a side of the second rotating member facing the first rotating member, and the second inclined surface extends from the bottom of the second groove to the notch of the second groove.

[0016] In this solution, the above-mentioned structural form is adopted, and the second rotating member is provided with a groove shape on one side facing the first rotating member, and the second inclined surface extends from the bottom of the groove to the surface of the side, which saves more space than the second inclined surface protruding from the surface of the second rotating member.

[0017] A chair comprises a seat plate, a backrest and the above-mentioned two-way folding and unlocking mechanism.

[0018] In this embodiment, the first rotating member can rotate about its axis, and in particular, can rotate between a first position and a second position, and the second rotating member can rotate about its axis, and in particular, can rotate between a third position and a fourth position. When the second rotating member is not rotating and the first rotating member rotates to the second position, since the first inclined surface is arranged to gradually rise from the first position to the second position, the first inclined surface is tangential to the unlocking member during movement and applies a force to the unlocking member as the first rotating member rotates, causing the unlocking member to move in the unlocking direction under the push of the first inclined surface to achieve unlocking. When the first rotating member is in the first position, that is, the first rotating member is not rotating, and the second rotating member rotates from the third position to the fourth position, since the second inclined surface is arranged to gradually rise from the third position to the fourth position, the second inclined surface is tangential to the pushing portion during movement and applies a force to the pushing portion as the second rotating member rotates, causing the pushing portion to move toward the unlocking member under the push of the second inclined surface, and then the unlocking member moves in the unlocking direction under the push of the pushing portion to achieve unlocking.

[0019] Preferably, the backrest is connected to the first rotating member, and the seat plate is connected to the second rotating member. When the backrest is unfolded, the first rotating member is located in the first position; when the backrest is folded, the first rotating member is located in the second position; when the seat plate is unfolded, the second rotating member is located in the third position; when the seat plate is folded, the second rotating member is located in the fourth position.

[0020] In this solution, the aforementioned structure allows the unlocking member to be unlocked by rotating either the backrest or the seat. This eliminates the need for users to flex the backrest or seat according to the seat's orientation on the vehicle frame or their position relative to the vehicle, making operation more convenient and simple.

[0021] A baby stroller comprises the above-mentioned seat.

[0022] In this solution, using the above-mentioned structure, consumers can unlock the stroller by rotating either the backrest or the seat. Consumers do not need to adjust the seat's orientation on the stroller frame or their position relative to the vehicle; they can flexibly bend the backrest or seat, making operation more convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of an embodiment of the present utility model.

[0024] Figure 2 This is another structural diagram of an embodiment of the present utility model.

[0025] Figure 3 This is another structural diagram of an embodiment of the present utility model.

[0026] Figure 4 This is a cross-sectional view of a first rotating member according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the seat structure of an embodiment of the present invention.

[0028] Figure 6 The figure is a schematic structural diagram of a child stroller according to an embodiment of the present invention.

[0029] Figure 7 This is a schematic structural diagram of an unlocking member on a vehicle frame according to an embodiment of the present invention.

[0030] Figure 8 This is a cross-sectional view of an unlocking member on a vehicle frame according to an embodiment of the present invention.

[0031] Description of Reference Numerals

[0032] First rotating member 1

[0033] Pushing portion 11

[0034] Accommodating tube 111

[0035] Limiting portion 1111

[0036] Rod body 112

[0037] First end 1121

[0038] Second end 1122

[0039] Return spring 113

[0040] First inclined surface 12

[0041] First groove 13

[0042] Second rotating member 2

[0043] Second slope 21

[0044] Second groove 22

[0045] Backrest 3

[0046] Seat plate 4

[0047] Unlocking piece 62

[0048] First position 31

[0049] Second position 32

[0050] Third position 41

[0051] Fourth position 42 DETAILED DESCRIPTION

[0052] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0053] like Figures 1-4 、 Figure 7 、 Figure 8As shown, this embodiment provides a two-way folding and unlocking mechanism for applying an unlocking force to the unlocking member 62 on the stroller. The two-way folding and unlocking mechanism includes: a first rotating member 1, which can rotate between a first position 31 and a second position 32. The first rotating member 1 is provided with a pushing portion 11 and a first inclined surface 12. The first inclined surface 12 extends from the first position 31 to the second position 32. When the first rotating member 1 rotates to the first position 31, the pushing portion 11 corresponds to the position of the unlocking member 62. When the first rotating member 1 rotates to the second position 32, the first inclined surface 12 extends from the first position 31 to the second position 32. 2 contacts the unlocking member 62 and pushes the unlocking member 62, so that the unlocking member 62 moves in a predetermined direction; the second rotating member 2 can rotate between the third position 41 and the fourth position 42. The second rotating member 2 is provided with a second inclined surface 21, and the second inclined surface 21 extends and protrudes from the third position 41 to the fourth position 42. When the first rotating member 1 rotates to the first position 31 and the second rotating member 2 rotates to the fourth position 42, the second inclined surface 21 contacts and pushes the pushing portion 11, so that the pushing portion 11 pushes the unlocking member 62 to move in a predetermined direction.

[0054] In this embodiment, using the above-described structure, the first rotating member 1 can rotate about its rotation axis, particularly between a first position 31 and a second position 32, and the second rotating member 2 can rotate about its rotation axis, particularly between a third position 41 and a fourth position 42. When the second rotating member 2 is stationary and the first rotating member 1 rotates to the second position 32, because the first inclined surface 12 is arranged to gradually rise from the first position 31 to the second position 32, the first inclined surface 12 is tangential to the unlocking member 62 during movement and applies a force to the unlocking member 62 as the first rotating member 1 rotates, causing the unlocking member 62 to move in the unlocking direction under the push of the first inclined surface 12, thereby unlocking. When the first rotating member 1 is in the first position 31, that is, the first rotating member 1 does not rotate, the second rotating member 2 rotates from the third position 41 to the fourth position 42. Since the second inclined surface 21 is arranged to gradually rise from the third position 41 to the fourth position 42, the second inclined surface 21 is tangential to the pushing portion 11 during movement and applies a force to the pushing portion 11 as the second rotating member 2 rotates, so that the pushing portion 11 moves toward the unlocking member 62 under the push of the second inclined surface 21, and then the unlocking member 62 moves in the unlocking direction under the push of the pushing portion 11 to achieve unlocking. When operating this two-way folding and unlocking mechanism, whether rotating the first rotating member 1 or the second rotating member 2, the unlocking force can be applied to the unlocking member, making the operation more convenient and simple.

[0055] As a preferred embodiment, the first rotating member 1 and the second rotating member 2 are coaxially rotatably connected.

[0056] In this embodiment, the above-described structure enables the first rotating member 1 and the second rotating member 2 to be coaxially connected for rotation. This results in a highly integrated folding and unlocking mechanism, a compact size, and simplified manufacturing at low cost. Of course, in other embodiments, the first rotating member 1 and the second rotating member 2 may also rotate about their own rotational axes, i.e., not coaxially. This is sufficient as long as the second inclined surface 21 exerts a force on the pushing portion 11 when the second rotating member 2 rotates, causing the pushing portion 11 to move toward the unlocking member 62 under the push of the second inclined surface 21.

[0057] As a preferred embodiment, the pushing portion 11 includes a accommodating tube 111, a rod body 112 and a return spring 113. The rod body 112 includes a first end 1121 and a second end 1122. The diameter of the first end 1121 is smaller than the diameter of the second end 1122. The first end 1121 is located in the accommodating tube 111, and the second end 1122 abuts against the second rotating member 2. A limiting portion 1111 is provided at one end of the accommodating tube 111 facing the unlocking member 62. The return spring 113 is sleeved on the first end 1121 and is located between the limiting portion 1111 and the second end 1122.

[0058] In this embodiment, the above-mentioned structural form is adopted, and the return spring 113 is maintained between the limit portion 1111 and the second end 1122. When the second rotating member 2 rotates from the third position 41 to the fourth position 42, the rod body 112 can move along the second end 1122 toward the first end 1121; when the second rotating member 2 rotates from the fourth position 42 to the third position 41, the rod body 112 can move along the first end 1121 toward the second end 1122 under the elastic force of the return spring 113. That is, when the second rotating member 2 rotates back and forth, the pushing portion 11 can achieve reciprocating movement of ejection and reset. The above-mentioned pushing portion 11 has a simple structure and low manufacturing cost. Of course, in other embodiments, the rod body 112 can be other irregular shapes, or a cylindrical shape with the same diameter. It is only necessary to set a clamping portion of the return spring 113 on the rod body 112.

[0059] As a preferred embodiment, the second end 1122 is pressed by the second rotating member 2 to fit in a clearance with the inner wall of the accommodating tube 111 .

[0060] In this embodiment, the above-described structure allows the second end 1122 to maintain a clearance fit with the inner wall of the accommodating tube 111 under the pressure of the second rotating member 2, regardless of whether the second rotating member 2 is in the third position 41 or the fourth position 42. This prevents the rod 112 from deflecting due to friction during rotation of the second rotating member 2, thereby preventing the rod 112 from moving in the intended direction. This structure eliminates the need for an additional limiting mechanism to maintain the stability of the rod 112, resulting in a simple structure.

[0061] As a preferred embodiment, a first groove 13 is provided on the side of the first rotating member 1 facing the unlocking member 62, the pushing portion 11 is provided at the bottom of the first groove 13, and the first inclined surface 12 extends from the bottom of the first groove 13 to the notch of the first groove 13.

[0062] In this embodiment, the above-mentioned structural form is adopted, and the first rotating member 1 is provided with a groove-shaped side facing the unlocking member 62, and the first inclined surface 12 extends from the bottom of the groove to the surface of the side. Compared with the first inclined surface 12 protruding from the surface of the first rotating member 1, it is more beautiful and saves more space.

[0063] As a preferred embodiment, a second groove 22 is provided on a side of the second rotating member 2 facing the first rotating member 1 , and the second inclined surface 21 extends from the bottom of the second groove 22 to the notch of the second groove 22 .

[0064] In this embodiment, the above-mentioned structural form is adopted, and the second rotating member 2 is provided in a groove shape on one side facing the first rotating member 1, and the second inclined surface 21 extends from the bottom of the groove to the surface of the side. Compared with the second inclined surface 21 protruding from the surface of the second rotating member 2, it saves more space.

[0065] like Figure 5 As shown, this embodiment further provides a seat, comprising a seat plate 4, a backrest 3 and the above-mentioned two-way folding and unlocking mechanism.

[0066] In this embodiment, using the above-described structure, the first rotating member 1 can rotate about its rotation axis, particularly between a first position and a second position, and the second rotating member 2 can rotate about its rotation axis, particularly between a third position and a fourth position. When the second rotating member 2 is not rotating and the first rotating member 1 is rotated to the second position, because the first inclined surface 12 is arranged to gradually rise from the first position to the second position, the first inclined surface 12 is tangential to the unlocking member 62 during movement and applies a force to the unlocking member 62 as the first rotating member 1 rotates, causing the unlocking member 62 to move in the unlocking direction under the push of the first inclined surface 12 to achieve unlocking. When the first rotating member 1 is in the first position, that is, the first rotating member 1 does not rotate, the second rotating member 2 rotates from the third position to the fourth position. Since the second inclined surface 21 is arranged to gradually rise from the third position to the fourth position, the second inclined surface 21 is tangent to the pushing portion 11 during the movement and applies a force to the pushing portion 11 as the second rotating member 2 rotates, so that the pushing portion 11 moves toward the unlocking member 62 under the push of the second inclined surface 21, and then the unlocking member 62 moves in the unlocking direction under the push of the pushing portion 11 to achieve unlocking.

[0067] As a preferred embodiment, the backrest 3 is connected to the first rotating member 1, and the seat plate 4 is connected to the second rotating member 2. When the backrest 3 is unfolded, the first rotating member 1 is located in the first position; when the backrest 3 is folded, the first rotating member 1 is located in the second position; when the seat plate 4 is unfolded, the second rotating member 2 is located in the third position; when the seat plate 3 is folded, the second rotating member 2 is located in the fourth position.

[0068] In this embodiment, the above-mentioned structural form is adopted. When operating the seat, whether rotating the backrest 3 or rotating the seat plate 4, the unlocking force can be applied to the unlocking member 62. The user does not need to bend the backrest 3 or the seat plate 4 according to the direction in which the seat is placed on the vehicle frame or the user's position relative to the vehicle, and can flexibly choose to bend the backrest 3 or the seat plate 4, making the operation more convenient and simple. Of course, in normal use, the backrest 3 has multiple expansion angles, that is, the first rotating member 1 can be rotated to positions other than the first position and the second position. Of course, in other embodiments, the backrest 3 can be connected to the second rotating member 2, and the seat plate 4 can be fixedly connected to the first rotating member 1.

[0069] like Figure 6 As shown, this embodiment also provides a child stroller, including the above-mentioned seat.

[0070] In this embodiment, the above-described structure allows consumers to unlock the stroller by rotating either the backrest 3 or the seat 4. This allows consumers to flexibly bend either the backrest 3 or the seat 4, regardless of the orientation of the seat on the stroller frame or their position relative to the stroller, making operation more convenient and simple.

[0071] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A two-way folding and unlocking mechanism for applying an unlocking force to an unlocking member on a child stroller, characterized in that: The two-way folding and unlocking mechanism includes: a first rotating member, the first rotating member being rotatable between a first position and a second position, the first rotating member being provided with a pushing portion and a first inclined surface, the first inclined surface extending and protruding from the first position toward the second position, the pushing portion corresponding to the position of the unlocking member when the first rotating member is rotated to the first position, and the first inclined surface contacting and pushing the unlocking member when the first rotating member is rotated to the second position, causing the unlocking member to move in a predetermined direction; The second rotating member can rotate between a third position and a fourth position. The second rotating member is provided with a second inclined surface. The second inclined surface extends and protrudes from the third position toward the fourth position. When the first rotating member rotates to the first position and the second rotating member rotates to the fourth position, the second inclined surface contacts and pushes the pushing portion, so that the pushing portion pushes the unlocking member to move along a predetermined direction.

2. The two-way folding and unlocking mechanism according to claim 1, characterized in that: The first rotating member is coaxially and rotatably connected to the second rotating member.

3. The two-way folding and unlocking mechanism according to claim 1, characterized in that: The pushing portion includes a accommodating tube, a rod body and a return spring. The rod body includes a first end and a second end. The diameter of the first end is smaller than the diameter of the second end. The first end is located in the accommodating tube, and the second end abuts against the second rotating member. A limiting portion is provided at one end of the accommodating tube facing the unlocking member. The return spring is sleeved on the first end and located between the limiting portion and the second end.

4. The two-way folding and unlocking mechanism according to claim 3, characterized in that: The second end is pressed by the second rotating member to form a clearance fit with the inner wall of the accommodating tube.

5. The two-way folding and unlocking mechanism according to claim 1, characterized in that: A first groove is provided on a side of the first rotating member facing the unlocking member, the pushing portion is provided at the bottom of the first groove, and the first inclined surface extends from the bottom of the first groove to the notch of the first groove.

6. The two-way folding and unlocking mechanism according to claim 1, characterized in that: A second groove is provided on a side of the second rotating member facing the first rotating member, and the second inclined surface extends from the bottom of the second groove to the notch of the second groove.

7. A chair comprising a seat plate and a backrest, characterized in that: The seat includes the two-way folding and unlocking mechanism according to any one of claims 1 to 6.

8. The seat according to claim 7, wherein: The backrest is connected to the first rotating member, and the seat plate is connected to the second rotating member. When the backrest is unfolded, the first rotating member is located in the first position; when the backrest is folded, the first rotating member is located in the second position; when the seat plate is unfolded, the second rotating member is located in the third position; when the seat plate is folded, the second rotating member is located in the fourth position.

9. A baby stroller, characterized in that: The child stroller comprises the seat according to any one of claims 7-8.

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