Baby carriage locking joint capable of being unlocked through rotation

Abstract

According to the baby carriage locking joint capable of being rotationally unlocked, a locking piece used for locking the opening state of a backrest joint and a rear support joint is arranged between the backrest joint and the rear support joint, and in the unlocking and locking process, the locking piece slides along the axis a; the unlocking seat is used for unlocking the opening state of the backrest joint and the rear support joint, and the unlocking seat abuts against the locking piece in the extending direction of the axis a through a transmission piece; a rotating rod is correspondingly connected to the unlocking seat, the length direction of the rotating rod corresponds to the extending direction of the axis a, the rotating rod rotates forwards to control the unlocking seat to be unlocked, the rotating rod rotates backwards to control the unlocking seat to be locked, or the rotating rod rotates backwards to control the unlocking seat to be unlocked, and the rotating rod rotates forwards to control the unlocking seat to be locked. According to the scheme, the two-way unlocking operation can be conducted on the frame joint, the use flexibility is high, the part structure is simplified, the unlocking efficiency is improved, and the folding convenience of the whole vehicle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of baby carriages, and in particular to a rotationally unlocked locking joint of a baby carriage. Background Art

[0002] A baby stroller is a means of transportation for infants and young children. It is a vehicle that needs someone to help push or pull it. It is also an essential means of transportation for every family with children. In order to facilitate carrying and transportation, foldable baby strollers have appeared on the market. At present, when users go out, they can fold the baby stroller and carry it. Users need to unlock the locking element of the baby stroller first so that the various components can be folded and stored.

[0003] The existing frame locking joint has a complex structure, many parts, is difficult to operate, and has a poor unlocking efficiency, which affects the convenience of folding the entire vehicle. Moreover, the existing frame locking joint can only be unlocked or locked in one direction, and its operability is general when in use, so it cannot meet the flexibility requirements well.

[0004] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a topic to be studied and solved in the present invention. Summary of the invention

[0005] The utility model aims to provide a baby carriage locking joint which can be unlocked by rotation.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a rotationally unlocked baby stroller locking joint, including a backrest joint and a rear bracket joint rotationally assembled along an axis a, and a front bracket joint rotationally connected to either of the two along an axis a.

[0007] A locking member for locking the backrest joint and the rear support joint in the open state is provided between the backrest joint and the rear support joint. During the unlocking and locking process, the locking member slides along the axis a. An unlocking seat for unlocking the backrest joint and the rear support joint in the open state is also provided. The unlocking seat is in contact with the locking member in the extension direction of the axis a through a transmission member. A rotating rod is connected to the unlocking seat. The length direction of the rotating rod corresponds to the extension direction of the axis a. The unlocking seat is unlocked by rotating the rotating rod forward and locked by rotating the rotating rod backward. Alternatively, the unlocking seat is unlocked by rotating the rotating rod backward and locked by rotating the rotating rod forward.

[0008] In the above scheme: in the unlocked state, the position of the unlocking seat is rotated by the rotating rod, and the unlocking seat drives the locking member to slide axially into the backrest joint, thereby unlocking the position state of the backrest joint and the rear bracket joint; in the locked state, the position of the unlocking seat is restored by the rotating rod, and the locking member slides axially back to between the backrest joint and the rear bracket joint, thereby locking the position state of the backrest joint and the rear bracket joint.

[0009] According to a further technical solution, a protrusion is fixedly provided on the transmission member, and two first inclined surfaces are provided on the protrusion.

[0010] According to a further technical solution, the unlocking seat is in the form of a circular ring structure, an adapter is protruded from the circular ring structure, and passes through the circular ring structure to be assembled at the connection between the backrest joint and the rear bracket joint.

[0011] According to a further technical solution, the unlocking seat is provided with an assembly groove for rotationally mounting with the backrest joint or the rear bracket joint.

[0012] According to a further technical solution, a pair of top blocks are fixedly provided on the assembly groove, and both ends of the top blocks are provided with second inclined surfaces.

[0013] According to a further technical solution, a spring seat for assembling a reset elastic member is also provided on the assembly groove.

[0014] A further technical solution also includes a linkage mechanism for realizing the linkage operation of the front bracket joint and the rear bracket joint.

[0015] A further technical solution is that the linkage mechanism includes a first linkage rod, a second linkage rod, a third linkage rod and a fourth linkage rod, the first end of the first linkage rod is rotationally connected to the front bracket joint, the second end of the first linkage rod is rotationally connected to the first end of the second linkage rod, the second end of the second linkage rod is rotationally connected to the rear bracket joint, the first end of the third linkage rod is rotationally connected to the second end of the second linkage rod, the second end of the third linkage rod is rotationally connected to the first end of the fourth linkage rod, and the second end of the fourth linkage rod is rotationally connected to the backrest joint.

[0016] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0017] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0018] The words “include,” “including,” and “have” used in this document are open-ended terms, meaning including but not limited to.

[0019] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0020] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0021] The working principle and advantages of this utility model are as follows:

[0022] In this case, the frame joints of the baby stroller are unlocked by rotating the connecting rod structure, and the frame joints can be unlocked in both directions, which is highly flexible to use.

[0023] In addition, this case simplifies the parts structure, improves the unlocking efficiency, and adopts a rod unlocking structure to save effort and ensure the convenience of folding the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model when the frame is partially locked;

[0025] Attached Figure 2 This is a side view of the embodiment of the utility model in the locked state

[0026] Attached Figure 3 It is a side view of the embodiment of the utility model in the unlocked (folded) state;

[0027] Attached Figure 4 This is a schematic diagram of the structure of the locking joint part of an embodiment of the utility model;

[0028] Attached Figure 5 An exploded view of the locking joint portion of an embodiment of the utility model;

[0029] Attached Figure 6 A schematic diagram of the driving relationship between the unlocking seat, the locking member and the transmission member in the embodiment of the utility model;

[0030] Attached Figure 7 It is a schematic diagram of the position state between the transmission member and the unlocking seat in the unlocking state of the embodiment of the utility model;

[0031] Attached Figure 8This is a schematic diagram of the position state between the transmission member (bump) and the unlocking seat in the locked state of the embodiment of the utility model;

[0032] Attached Fig. 9 This is a schematic diagram of the overall structure of the unlocking seat and the rotating rod of the embodiment of the utility model;

[0033] Attached Fig.10 This is a schematic diagram of the structure of the utility model embodiment when the frame is partially folded;

[0034] Attached Fig.11 This is a structural schematic diagram of an embodiment of the utility model when the frame is in a locked state;

[0035] Attached Fig.12 This is a schematic diagram of the structure of the embodiment of the utility model in a partially locked state after the frame and the seat pocket are combined.

[0036] In the above drawings: 1. backrest joint; 2. rear bracket joint; 3. front bracket joint; 31. rotating part joint; 32. fixed part joint; 4. first connecting rod; 5. second connecting rod; 6. third connecting rod; 7. fourth connecting rod; 8. locking member; 9. transmission member; 91. convex block; 911. first inclined surface; 10. unlocking seat; 101. assembly groove; 102. top block; 1021. second inclined surface; 103. spring seat; 11. rotating rod; 12. adapter; a. axis; b. axis; A. frame; B. seat pocket. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0038] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0039] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0040] See attached Figure 1 and Figures 11-12As shown, a locking joint of a baby carriage that can be unlocked by rotation includes a backrest joint 1 and a rear support joint 2 that are rotationally assembled along an axis a, and a front support joint 3 that is rotationally connected to either of the two along an axis a (that is, the backrest joint 1, the rear support joint 2, and the front support joint 3 all rotate along the axis a). The front support joint 3 includes a rotating part joint 31 and a fixed part joint 32, wherein the first end of the rotating part joint 31 and the fixed part joint 32 are rotationally assembled along an axis b, and the second end of the fixed part joint 32 is rotationally connected to the backrest joint 1 or the rear support joint 2, so that the space occupied by the locking joint part is reduced when the locking joint part is in a folded state.

[0041] A linkage mechanism for linkage operation is also provided between each joint, and the linkage mechanism includes a first linkage rod 4, a second linkage rod 5, a third linkage rod 6 and a fourth linkage rod 7, wherein the first end of the first linkage rod 4 is rotationally connected to the front bracket joint 3, the second end of the first linkage rod 4 is rotationally connected to the first end of the second linkage rod 5, the second end of the second linkage rod 5 is rotationally connected to the rear bracket joint 3, the first end of the third linkage rod 6 is rotationally connected to the second end of the second linkage rod 5, the second end of the third linkage rod 6 is rotationally connected to the first end of the fourth linkage rod 7, and the second end of the fourth linkage rod 7 is rotationally connected to the backrest joint 1. The linkage mechanism can be arranged outside or inside the joint of the baby carriage frame to facilitate auxiliary folding.

[0042] See attached Figures 2~5 As shown, in the utility model: a locking piece 8 for locking the backrest joint 1 and the rear support joint 2 in the open state is provided between the backrest joint 1 and the rear support joint 2. In the process of unlocking and locking, the locking piece 8 slides along the axis a; and an unlocking seat 10 for unlocking the backrest joint 1 and the rear support joint 2 in the open state is also provided. A rotating rod 11 is connected to the unlocking seat 10, and the rotating rod 11 corresponds to the extension direction of the axis a in its length direction. The unlocking seat 10 is unlocked by rotating the rotating rod 11 forward, and the unlocking seat 10 is locked by rotating the rotating rod 11 backward, or the unlocking seat 10 is unlocked by rotating the rotating rod 11 backward, and the unlocking seat 10 is locked by rotating the rotating rod 11 forward, which can cooperate with the positive and negative assembly of the seat pocket B to facilitate the unlocking operation. Among them, the unlocking seat 10 with a circular ring structure is assembled at the connection between the backrest joint 1 and the rear support joint 3 through an adapter 12. The adapter 12 can be movably connected with the seat pocket B, so as to complete the assembly of the seat pocket B and the frame A.

[0043] The unlocking seat 10 is in contact with the locking member 8 in the extension direction of the axis a through a transmission member 9. A protrusion 91 is fixedly provided on the transmission member 9. The protrusion 91 can be in close contact with the unlocking seat 10 so that the locking member 8 is fixed between the backrest joint 1 and the rear bracket joint 3, thereby realizing joint locking; the locking member 8 is controlled by the unlocking seat 10 to unlock the locking joint of the baby carriage, so as to realize the unlocking of the backrest joint 1 and the rear bracket joint 2 relative to the front bracket joint 3, so that the frame A is fully opened.

[0044] Specifically, see Appendix Figures 6 to 10 As shown, the unlocking seat 10 is also provided with an assembly groove 101, through which the backrest joint 1 or the rear bracket joint 2 is rotatably mounted. A top block 102 is fixedly provided on the assembly groove 101, and both ends of the top block 102 are provided with a second inclined surface 1021; the assembly groove 101 is also provided with a spring seat 103, and a reset elastic member is assembled through the spring seat 103, so that the protrusion 91 can be rotated and reset.

[0045] The working principle of the utility model is:

[0046] Among them: See attached Figure 7 As shown, in the unlocked state, the unlocking seat 10 is rotated by using the rotating rod 11. When the unlocking seat 10 is in the rotation process, the contact state between the top block 102 set on the assembly groove 101 and the transmission member 9 changes, and the second inclined surface 1021 set on the top block 102 acts on the first inclined surface 911 on the protrusion 91. The force generated by the two inclined surfaces drives the protrusion 91 to continue to move to the surface of the top block 102, thereby driving the transmission member 9 to slide axially toward the outside of the joint, so that the transmission member 9 continues to push the locking member 8 into the rear bracket joint 2, thereby unlocking the position state of the backrest joint 1 and the rear bracket joint 2.

[0047] Among them: See attached Figure 8 As shown, in the locked state, the rotating rod 11 is rotated in the direction opposite to the unlocking direction to restore the position of the unlocking seat 10. At this time, the protrusion 91 slides back from the abutment on the surface of the top block 102 along the second inclined surface 1021 to the assembly groove 101, thereby driving the transmission member 9 to move toward the inside of the locking joint of the baby carriage, and then the transmission member 9 drives the locking member 8 to slide axially to restore to between the backrest joint 1 and the rear bracket joint 2, thereby locking the position state of the backrest joint 1 and the rear bracket joint 2. The assembly groove 101 in the unlocking seat has a rotation limiting feature. The assembly groove 101 can stably position the transmission member 9, so that the transmission member 9 is stationary relative to the locking member 8, which can stabilize the joint connection structure, avoid shaking, and prevent the frame from being unlocked and folded again, effectively meeting the needs of safe use.

[0048] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A locking joint for a baby carriage that can be unlocked by rotation, characterized in that: It comprises a backrest joint (1) and a rear support joint (2) rotatably assembled along an axis (a), and a front support joint (3) rotatably connected to either of the two; A locking member (8) is provided between the backrest joint (1) and the rear support joint (2) for locking the backrest joint (1) and the rear support joint (2) in an open state, and during the unlocking and locking process, the locking member (8) slides along the axis (a); It also comprises an unlocking seat (10) for unlocking the backrest joint (1) and the rear bracket joint (2) in an open state, the unlocking seat (10) being in contact with the locking member (8) in the extension direction of the axis (a) via a transmission member (9); A rotating rod (11) is connected to the unlocking seat (10), and the length direction of the rotating rod (11) corresponds to the extension direction of the axis (a); The unlocking seat (10) is unlocked by rotating the rotating rod (11) forwards, and the unlocking seat (10) is locked by rotating the rotating rod (11) backwards; or, the unlocking seat (10) is unlocked by rotating the rotating rod (11) backwards, and the unlocking seat (10) is locked by rotating the rotating rod (11) forwards.

2. A baby stroller locking joint capable of being unlocked by rotation according to claim 1, characterized in that: The baby carriage locking joint has two states: unlocked and locked; In the unlocked state, the unlocking seat (10) is rotated by using the rotating rod (11), and the unlocking seat (10) drives the locking member (8) to slide axially into the backrest joint (1), thereby unlocking the position state of the backrest joint (1) and the rear bracket joint (2); In the locked state, the unlocking seat (10) is rotated and restored to its position by using the rotating rod (11), and the locking member (8) slides axially to restore to between the backrest joint (1) and the rear bracket joint (2), thereby locking the position of the backrest joint (1) and the rear bracket joint (2).

3. A baby stroller locking joint capable of being unlocked by rotation according to claim 1, characterized in that: A convex block (91) is fixedly provided on the transmission member (9), and two first inclined surfaces (911) are provided on the convex block (91).

4. A baby stroller locking joint capable of being unlocked by rotation according to claim 1, characterized in that: The unlocking seat (10) is in the form of a circular ring structure, and an adapter (12) is protruding from the circular ring structure and passes through the circular ring structure to be assembled at the connection between the backrest joint (1) and the rear bracket joint (2).

5. A baby stroller locking joint capable of being unlocked by rotation according to claim 4, characterized in that: The unlocking seat (10) is provided with an assembly groove (101) for rotationally mounting with the backrest joint (1) or the rear bracket joint (2).

6. A baby stroller locking joint capable of being unlocked by rotation according to claim 5, characterized in that: A top block (102) is fixedly disposed on the assembly groove (101), and second inclined surfaces (1021) are disposed at both ends of the top block (102).

7. A baby stroller locking joint capable of being unlocked by rotation according to claim 6, characterized in that: The assembly groove (101) is also provided with a spring seat (103) for assembling a resetting elastic member.

8. The rotationally unlocked baby stroller locking joint according to claim 1, characterized in that: It also includes a linkage mechanism for realizing linkage operation of the backrest joint (1), the rear support joint (2) and the front support joint (3).

9. A baby stroller locking joint capable of being unlocked by rotation according to claim 8, characterized in that: The linkage mechanism comprises a first linkage rod (4), a second linkage rod (5), a third linkage rod (6) and a fourth linkage rod (7); the first end of the first linkage rod (4) is rotationally connected to the front bracket joint (3); the second end of the first linkage rod (4) is rotationally connected to the first end of the second linkage rod (5); the second end of the second linkage rod (5) is rotationally connected to the rear bracket joint (2); the first end of the third linkage rod (6) is rotationally connected to the second end of the second linkage rod (5); the second end of the third linkage rod (6) is rotationally connected to the first end of the fourth linkage rod (7); and the second end of the fourth linkage rod (7) is rotationally connected to the backrest joint (1).

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