Seat pocket and cart

Abstract

The utility model discloses a seat pocket and a cart. The seat pocket comprises a seat frame, a leg support, an armrest, a locking mechanism and an unlocking mechanism, the leg support is rotatably connected with the seat frame, the armrest is rotatably connected with the seat frame, the locking mechanism is movably arranged on the armrest or the seat frame and used for locking relative rotation of the seat frame and the armrest, and the unlocking mechanism is respectively connected with the leg support and the locking mechanism. In the process that the leg support gets close to the seat frame and is folded, the leg support drives the unlocking mechanism to unlock the locking mechanism, so that unlocking of the armrest and the seat frame is achieved, the armrest can be synchronously folded along with the leg support, the operation steps of folding the seat pocket by a user are simplified, and the folding efficiency of the seat pocket and the use experience of the user are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of child strollers, in particular to a seat pocket and a stroller. Background Art

[0002] A seat pocket is a children's product that can bear the weight of a child and help the child to sit or lie more comfortably. Usually, the seat pocket is placed on a frame with a walking function to form a child stroller. The seat pocket includes a pedal for the child to step on and an armrest for the child to grasp. In order to facilitate the user to carry and store it in a small space such as the trunk of a car, there are existing seat pockets with foldable pedals and armrests. After the pedals and armrests of the seat pocket are unlocked and rotated to a certain angle, the seat pocket is folded, thereby reducing the space occupied by the seat pocket. However, in existing seat pockets, the pedals and armrests are generally unlocked and folded independently, which is cumbersome to operate and has low folding efficiency, resulting in a poor user experience. Utility Model Content

[0003] The first purpose of the utility model is to provide a seat pocket, which is easy to operate when stored, has high folding efficiency, and provides a good user experience.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A seat pocket comprises: a seat frame; a leg rest rotatably connected to the seat frame; an armrest rotatably connected to the seat frame; a locking mechanism movably arranged on the armrest or the seat frame for locking the relative rotation between the seat frame and the armrest; an unlocking mechanism respectively engaged with the leg rest and the locking mechanism; when the leg rest is folded toward the seat frame, the leg rest drives the unlocking mechanism to unlock the locking mechanism.

[0006] In some embodiments, when the leg rest is folded toward the seat frame, the leg rest first rotates relative to the unlocking mechanism, and when the leg rest rotates to the folded position, the leg rest drives the unlocking mechanism to move to unlock the locking mechanism.

[0007] In some embodiments, the leg rest rotates relative to the seat frame around a first axis a; the unlocking mechanism includes a transmission member coaxially arranged with the leg rest, a traction member arranged between the transmission member and the armrest, a first matching portion arranged at the traction member and moving synchronously with the transmission member, and a second matching portion arranged at the leg rest and moving synchronously with the leg rest; when the first matching portion rotates to abut against the second matching portion, the first matching portion and the second matching portion both rotate synchronously; when the traction member and the second matching portion rotate synchronously, the traction member unlocks the locking mechanism.

[0008] In some embodiments, one of the first matching portion and the second matching portion is an arc-shaped groove, and the other is a protrusion, and the protrusion is placed in the arc-shaped groove and can move in the arc-shaped groove.

[0009] In some embodiments, a first limiting surface is formed on the transmission member, and a second limiting surface is formed on the seat frame. The first limiting surface and the second limiting surface can be in limiting contact with each other to limit the rotation of the transmission member around the first axis a.

[0010] In some embodiments, the seat pocket further includes a rotating member, which is disposed between the locking mechanism and the seat frame, and the unlocking mechanism is connected to the rotating member and can drive the rotating member to rotate around a second axis b to unlock the locking mechanism.

[0011] In some embodiments, in the circumferential direction around the second axis b, a first arcuate slope is formed on the seat frame, and a second arcuate slope is formed on the rotating member, and the first arcuate slope and the second arcuate slope are in contact with each other and can slide relative to each other; and / or, in the circumferential direction around the second axis b, a third arcuate slope is formed on the locking mechanism, and a fourth arcuate slope is formed on the rotating member, and the third arcuate slope and the fourth arcuate slope are in contact with each other and can slide relative to each other; wherein, the rotating member can drive the locking mechanism to move when it rotates around the second axis b.

[0012] In some embodiments, the first arc-shaped inclined surface and the second arc-shaped inclined surface are each provided with a plurality, and are in one-to-one corresponding sliding abutment; and / or, the third arc-shaped inclined surface and the fourth arc-shaped inclined surface are each provided with a plurality, and are in one-to-one corresponding sliding abutment.

[0013] In some embodiments, a toothed structure is formed on the locking mechanism; a first tooth groove is formed on the armrest, and a second tooth groove is formed on the seat frame; the locking mechanism can move to a locked position in which it is simultaneously engaged in the first tooth groove and the second tooth groove, and the locking mechanism can move to an unlocked position in which it is completely engaged in the first tooth groove.

[0014] In some embodiments, the seat pocket further includes a leg rest locking member, which is movably disposed on the leg rest, and the leg rest locking member is used to lock the relative rotation between the seat frame and the leg rest.

[0015] In some embodiments, the seat pocket further includes a pulling member and a flexible connecting member, one end of the pulling member is connected to the leg rest locking member through the flexible connecting member, and pulling the pulling member can unlock the leg rest locking member.

[0016] The second object of the utility model is to provide a stroller, the seat pocket of which is easy to operate when stored, has high folding efficiency, and provides a good user experience.

[0017] To achieve this purpose, the utility model adopts the following technical solutions:

[0018] A stroller comprises a frame and the above-mentioned seat pocket, wherein the seat pocket is installed on the frame.

[0019] Beneficial effects of the utility model:

[0020] The seat pocket provided by the utility model comprises a seat frame, a leg rest, an armrest, a locking mechanism and an unlocking mechanism. The leg rest is rotatably connected to the seat frame, and the armrest is rotatably connected to the seat frame. The locking mechanism is movably arranged on the armrest or the seat frame to lock the relative rotation of the seat frame and the armrest. The unlocking mechanism is respectively engaged with the leg rest and the locking mechanism. In the process of the leg rest moving toward the seat frame and folding, the leg rest drives the unlocking mechanism to unlock the locking mechanism, thereby realizing the unlocking of the armrest and the seat frame, so that the armrest can be synchronously folded with the leg rest, thereby simplifying the operation steps of the user to fold the seat pocket, and improving the folding efficiency of the seat pocket and the user's experience.

[0021] The utility model provides a stroller comprising a frame and a seat pocket, wherein the seat pocket is mounted on the frame. The stroller improves the storage efficiency of the stroller by using the seat pocket that can be folded quickly, reduces the space required for storage of the stroller, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the seat pocket in a working state at a certain viewing angle;

[0023] Figure 2 It is a schematic diagram of the seat pocket in working state from another perspective;

[0024] Figure 3 is a schematic diagram of the seat pocket in a first folding state;

[0025] Figure 4 is a schematic diagram of the seat pocket in the second folding state;

[0026] Figure 5 This is a schematic diagram of the seat pocket in the stowed state;

[0027] Figure 6 It is a schematic diagram of the seat frame of the seat pocket;

[0028] Figure 7 This is a schematic diagram of the armrest of the seat pocket;

[0029] Figure 8 is a schematic diagram of the locking mechanism of the seat pocket;

[0030] Fig. 9 It is a cross-sectional view of the connection between the seat frame and the armrest of the seat pocket;

[0031] Fig.10 This is an exploded view of the seat pocket's armrest, rotating parts, and locking mechanism connections;

[0032] Fig.11 is a schematic diagram of the rotating parts of the seat pocket;

[0033] Fig.12 It is a schematic diagram of the pivot seat of the seat pocket;

[0034] Fig.13 is a schematic diagram of a leg support, a leg support locking member and a pulling member of a seat pocket;

[0035] Fig.14 is a schematic diagram of a first transmission structure of the seat pocket;

[0036] Fig.15 It is a schematic diagram of the second transmission structure of the seat pocket at a certain viewing angle;

[0037] Fig.16 is a schematic diagram of the second transmission structure of the seat pocket from another perspective;

[0038] Fig.17 is a process diagram of the first transmission structure and the second transmission structure of the seat bag switching from an initial state to a first state and a second state in sequence;

[0039] Fig.18 This is a schematic diagram of the locking teeth of the seat pocket being out of the locking groove;

[0040] Fig.19 It is a schematic diagram of the backrest of the seat pocket.

[0041] In the figure:

[0042] 10. seat frame; 11. seat frame main body; 12. seat frame side; 13. first mounting portion; 131. second tooth groove; 132. second convex shaft; 133. first arc-shaped inclined surface; 14. second mounting portion; 141. locking groove; 15. third mounting portion; 16. limiting convex strip; 161. second limiting surface;

[0043] 20. Leg support; 21. Abutment portion; 22. Rotation portion;

[0044] 30. armrest; 31. armrest main body; 32. armrest connecting part; 321. first tooth groove;

[0045] 40. Locking mechanism; 41. Toothed structure; 42. First rotating shaft hole;

[0046] 50. Unlocking mechanism;

[0047] 60. Rotating member; 61. Second arc-shaped inclined surface; 62. First rope groove; 63. First fixing hole; 64. Second rotating shaft hole;

[0048] 70, transmission member; 701, first limiting surface; 71, first transmission structure; 711, protrusion; 72, second transmission structure; 721, arc groove; 722, second fixing hole; 723, second rope groove; 724, opening;

[0049] 80. Leg support locking member; 81. Second connecting member; 811. Locking teeth; 82. Third connecting member;

[0050] 90. Pulling piece;

[0051] 100. Backrest;

[0052] 200, rotating shaft seat; 210, first convex shaft. DETAILED DESCRIPTION

[0053] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "locked position" and "unlocked position" are two different positions.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The utility model provides a seat pocket, which is used to bear the weight of a child and enables the child to sit or lie more comfortably, and the seat pocket can be assembled on different frames to form devices with different functions, such as a child seat, a child stroller, etc.

[0057] like Figures 1 to 19 As shown, the seat pocket provided by the utility model includes a seat frame 10, a leg rest 20, an armrest 30, a locking mechanism 40 and an unlocking mechanism 50. Specifically, the seat frame 10 is for the user to sit on, the leg rest 20 is for the user's legs to lean against, the armrest 30 is for the user to hold, the leg rest 20 is rotatably connected to the seat frame 10, and the rotation axis of the leg rest 20 is defined as the first axis a, and the armrest 30 is rotatably connected to the seat frame 10, and the rotation axis of the armrest 30 is defined as the second axis b. When the user sits on the seat frame 10, the user can lean his legs on the leg rest 20 and hold his hands on the armrest 30 to improve the riding stability and comfort. The locking mechanism 40 is movably disposed on the armrest 30 or the seat frame 10, and is used to lock the relative rotation of the seat frame 10 and the armrest 30, that is, the locking mechanism 40 has a locked state for locking the armrest 30 and the seat frame 10 and an unlocked state for unlocking the armrest 30 and the seat frame 10. In the locked state, the armrest 30 cannot rotate relative to the seat frame 10, and in the unlocked state, the armrest 30 can rotate relative to the seat frame 10. The unlocking mechanism 50 is respectively engaged with the leg rest 20 and the locking mechanism 40. In the process of the leg rest 20 being folded toward the seat frame 10, the leg rest 20 can drive the unlocking mechanism 50 to unlock the locking mechanism 40, that is, drive the locking mechanism 40 to move from the locked state to the unlocked state.

[0058] The seat pocket has a working state and a storage state. Figure 1 and Figure 2 As shown, when the seat pocket is in the working state, the angle between the leg support 20 and the seat frame 10, and the angle between the armrest 30 and the seat frame 10 are both large, and the armrest 30 and the seat frame 10 are in a locked state; Figure 5 As shown, when the seat pocket is in the stowed state, the angle between the leg support 20 and the seat frame 10, and the angle between the armrest 30 and the seat frame 10 are both small, and the armrest 30 and the seat frame 10 are in an unlocked state, so in the process of switching the seat pocket from the working state to the stowed state, as shown in FIG. Figures 1 to 5 As shown, not only the armrest 30 and the leg rest 20 need to be driven to rotate relative to the seat frame 10 , but also the armrest 30 and the seat frame 10 need to be unlocked.

[0059] The seat pocket provided by the utility model is provided with a movable locking mechanism 40 between the armrest 30 and the seat frame 10, where the activity here can be movement, rotation and movement, and an unlocking mechanism 50 is provided between the leg rest 20 and the locking mechanism 40, so that the leg rest 20 of the seat pocket can apply force to the unlocking mechanism 50 when rotating and approaching the seat frame 10, and the locking mechanism 40 is driven by the unlocking mechanism 50 to move from the locked position to the unlocked position, so as to unlock the armrest 30 and the seat frame 10. When the leg rest 20 is folded, the seat pocket can simultaneously unlock the armrest 30 and the seat frame 10, so that the armrest 30 can be folded synchronously with the leg rest 20, which not only simplifies the operation steps of the user to fold the seat pocket, improves the folding efficiency of the seat pocket, but also improves the user's experience.

[0060] like Figure 6 As shown, the seat frame 10 is generally in a U-shaped structure, which includes a seat frame main body 11 and two seat frame side parts 12, and the two seat frame side parts 12 are respectively located on both sides of the seat frame main body 11. In one embodiment, the seat frame main body 11 and the seat frame side parts 12 are integrally formed; in a parallel embodiment, the seat frame main body 11 and the seat frame side parts 12 are split structures, and are assembled by welding, bonding, screw connection, etc. In one embodiment, the seat frame side parts 12 also include a first mounting part 13 formed on the upper side of the seat frame main body 11, and the first mounting part 13 is used to achieve connection with the armrest 30; the seat frame side parts 12 include a second mounting part 14 formed on the front side of the seat frame main body 11, and the second mounting part 14 is used to achieve connection with the leg support 20; the seat frame side parts 12 also include a third mounting part 15 formed on the rear side of the seat frame main body 11, and the third mounting part 15 is used to install the backrest 100.

[0061] like Figure 7 As shown, the armrest 30 includes an armrest body 31 and two armrest connecting parts 32, the armrest connecting parts 32 are used to connect with the first mounting part 13, and the locking mechanism 40 is arranged between the armrest connecting parts 32 and the first mounting part 13, and is used to achieve locking and unlocking between the armrest connecting parts 32 and the first mounting part 13. In one embodiment, the armrest body 31 is a U-shaped rod structure, and the armrest connecting parts 32 are annular structures.

[0062] like Figure 8 and Fig. 9As shown, in some embodiments, the locking mechanism 40 is a gear member, on which a toothed structure 41 is formed, a first tooth groove 321 is formed on the armrest 30, and a second tooth groove 131 is formed on the seat frame 10. Coupling teeth that cooperate with the toothed structure 41 on the locking mechanism 40 are formed in the first tooth groove 321 and the second tooth groove 131. The second tooth groove 131 and the first tooth groove 321 are arranged opposite to each other and form a tooth groove cavity together. The locking mechanism 40 is located in the tooth groove cavity and can move in the tooth groove cavity under the action of an external force, thereby realizing movement between the locked position and the unlocked position. When the locking mechanism 40 is in the locked position (such as Fig. 9 ), the locking mechanism 40 is engaged in the first tooth groove 321 and the second tooth groove 131 at the same time; when the locking mechanism 40 is in the unlocking position, the locking mechanism 40 is fully engaged in the first tooth groove 321.

[0063] Since the seat frame 10 is a fixed part, the locking mechanism 40 is moved to the locked position so that the locking mechanism 40 is engaged with the first mounting portion 13 of the seat frame 10 and the armrest connecting portion 32 of the armrest 30 at the same time, and the first mounting portion 13 is used to limit the locking mechanism 40, so that the locking mechanism 40 can lock the armrest 30. At this time, even if the armrest 30 is subjected to external force, it will not rotate relative to the seat frame 10; when the locking mechanism 40 moves to the unlocked position, the seat frame 10 no longer limits the locking mechanism 40, and when the armrest 30 is subjected to external force, the armrest 30 can rotate relative to the seat frame 10.

[0064] Of course, in other embodiments, at least one limiting protrusion may be provided on the locking mechanism 40, and limiting grooves may be provided on the armrest 30 and the seat frame 10 accordingly, so that the armrest 30 can be locked and unlocked by cooperating between the limiting protrusion and the limiting groove.

[0065] In order to drive the locking mechanism 40 to switch between the locked position and the unlocked position, as shown in FIG. Fig. 9 and Fig.10 As shown, the seat pocket also includes a rotating member 60, which is arranged between the locking mechanism 40 and the seat frame 10. One end of the unlocking mechanism 50 is connected to the rotating member 60 and can drive the rotating member 60 to rotate around the second axis b to unlock the locking mechanism 40, that is, when the rotating member 60 rotates around the second axis b, it can drive the locking mechanism 40 to move from the locked position to the unlocked position.

[0066] In some embodiments, the unlocking mechanism 50 includes a traction member, which is a rope body, such as Fig.11 As shown, the rotating member 60 is provided with a first rope groove 62 for accommodating the rope body along the circumferential direction and a first fixing hole 63 for fixing the end of the rope body along the direction parallel to the rotation axis of the rotating member 60 .

[0067] In order to enable the rotating member 60 to move when rotating so as to drive the locking mechanism 40 to move, in some embodiments, such as Figure 6 and Fig.11 As shown, in the circumferential direction around the second axis b, a first arcuate slope 133 is formed on the seat frame 10, and a second arcuate slope 61 is formed on the rotating member 60. The first arcuate slope 133 and the second arcuate slope 61 abut against each other and can slide relative to each other. Through the sliding cooperation between the first arcuate slope 133 and the second arcuate slope 61, the rotating member 60 can move along the second axis b during the rotation process, thereby pushing the locking mechanism 40.

[0068] In one embodiment, a plurality of first arcuate slopes 133 are provided, and the plurality of first arcuate slopes 133 are distributed in a ring shape on the seat frame 10. Correspondingly, a plurality of second arcuate slopes 61 are provided, and the plurality of second arcuate slopes 61 are distributed in a ring shape on the rotating member 60. The plurality of second arcuate slopes 61 are arranged in one-to-one correspondence with the plurality of first arcuate slopes 133. Such an arrangement can improve the stability and accuracy of the rotating member 60 driving the locking mechanism 40 to move.

[0069] Of course, in other embodiments, a third arcuate slope (not shown in the figure) may be formed on the locking mechanism 40 in the circumferential direction around the second axis b, and a fourth arcuate slope (not shown in the figure) may be formed on the rotating member 60, and the third arcuate slope and the fourth arcuate slope abut against each other and can slide relative to each other. Through the sliding cooperation between the third arcuate slope and the fourth arcuate slope, the rotating member 60 can directly push the locking mechanism 40 to move along the second axis b during the rotation process.

[0070] In one embodiment, a plurality of third arcuate slopes are provided, and the plurality of third arcuate slopes are distributed in a ring shape on the locking mechanism 40. Correspondingly, a plurality of fourth arcuate slopes are provided, and the plurality of fourth arcuate slopes are distributed in a ring shape on the rotating member 60. The plurality of third arcuate slopes and the plurality of fourth arcuate slopes are provided in a one-to-one correspondence. Such a setting can improve the stability and accuracy of the rotating member 60 driving the locking mechanism 40 to move.

[0071] Of course, in other embodiments, in addition to using the rotating member 60 to rotate and drive the locking mechanism 40 to move, a power member capable of outputting linear motion may be directly provided, and the locking mechanism 40 may be directly driven by the power member to move, or a power member capable of outputting rotational motion and a transmission mechanism capable of converting rotational motion into linear motion may be provided, and the locking mechanism 40 may be driven by the power output of the transmission mechanism to move. Of course, an exposed shifting block may also be provided on the locking mechanism 40, and the shifting block may be manually shifted to push the locking mechanism 40 to move, so that the armrest 30 has both the functions of linkage unlocking and independent unlocking.

[0072] In order to enable the armrest 30 to rotate stably around the second axis line b, the seat pocket also includes two rotating shaft seats 200, which are respectively arranged on the outside of the two armrest connecting parts 32 of the armrest 30, and the rotating shaft seats 200 are fixedly connected to the seat frame side portion 12 of the seat frame 10. The rotating shaft seat 200 is arranged opposite to the first mounting portion 13 of the seat frame 10, and a space for installing the locking mechanism 40 and the rotating member 60 is formed between the rotating shaft seat 200 and the first mounting portion 13.

[0073] In one embodiment, a first protruding shaft 210 is convexly provided on the shaft seat 200, and a second protruding shaft 132 is convexly provided on the first mounting portion 13. The second protruding shaft 132 and the first protruding shaft 210 are both cylindrical and coaxially connected. A first rotating shaft hole 42 is provided on the locking mechanism 40, and a second rotating shaft hole 64 is provided on the rotating member 60, so that the locking mechanism 40 and the rotating member 60 can be rotatably mounted on the first protruding shaft 210 and the second protruding shaft 132. Of course, in other embodiments, a first cylindrical protruding shaft 210 may be convexly provided on the shaft seat 200, and a second square columnar protruding shaft 132 may be convexly provided on the first mounting portion 13. The second protruding shaft 132 may be inserted and fixed in the first protruding shaft 210, and the locking mechanism 40 and the rotating member 60 may be mounted on the first protruding shaft 210 at the same time; or a second cylindrical protruding shaft 132 may be convexly provided on the first mounting portion 13, and as shown in FIG. Fig.12 As shown, a first convex shaft 210 in the shape of a square column is protruded on the shaft seat 200 , and the first convex shaft 210 is inserted and fixed in the second convex shaft 132 , and the locking mechanism 40 and the rotating member 60 are simultaneously sleeved on the second convex shaft 132 .

[0074] like Fig.13 As shown, the leg rest 20 is roughly in the shape of a plate, and includes a supporting portion 21 and a rotating portion 22 that are connected to each other. A groove for the rotating portion 22 to enter is formed between the second mounting portions 14 of the two seat frame side portions 12, and the rotating portion 22 can rotate in the groove, thereby changing the angle between the leg rest 20 and the seat frame 10.

[0075] In some embodiments, during the process of the leg rest 20 being folded toward the seat frame 10, the leg rest 20 can drive the unlocking mechanism 50 to unlock the locking mechanism 40. Specifically, when the leg rest 20 is folded toward the seat frame 10, the leg rest 20 first rotates relative to the unlocking mechanism 50, and when the leg rest 20 rotates to the folded position, the leg rest 20 drives the unlocking mechanism 50 to move to unlock the locking mechanism 40.

[0076] Specifically, the unlocking mechanism 50 includes a transmission member 70 coaxially arranged with the leg rest 20, a traction member arranged between the transmission member 70 and the armrest 30, a first matching portion arranged on the traction member and moving synchronously with the transmission member 70, and a second matching portion arranged on the leg rest 20 and moving synchronously with the leg rest 20. Moreover, when the first matching portion rotates to abut against the second matching portion, the first matching portion and the second matching portion rotate synchronously; when the traction member and the second matching portion rotate synchronously, the traction member unlocks the locking mechanism.

[0077] In order to realize the driving of the rotating member 60 to rotate around the second axis b, in some embodiments, continue to refer to Figure 1 As shown, the transmission member 70 includes a first transmission structure 71 and a second transmission structure 72 which are arranged side by side and can rotate around the first axis a. The first transmission structure 71 is connected to the leg support 20. The connection here can be an integral connection, or two independent structures can be fixedly connected by welding, screw connection, etc. The first matching portion is arranged on the first transmission structure 71. The second transmission structure 72 is connected to one end of the traction member, and the second matching portion is arranged on the second transmission structure 72. That is, in the circumferential direction around the first axis a, the first matching portion has a first driving surface facing the second matching portion, and the second matching portion has a second driving surface facing the first matching portion. In the process of the leg support 20 rotating and approaching the seat frame 10, the first driving surface has a first state separated from the second driving surface, and the first driving surface has a second state abutting against the second driving surface.

[0078] When the first driving surface of the first matching part is in the first state, the first matching part and the second matching part cannot transmit force due to the lack of contact. At this time, the leg rest 20 only moves closer to the seat frame 10; as the first matching part rotates around the first axis a, the first driving surface of the first matching part gradually approaches the second driving surface of the second matching part until the first driving surface switches to the second state abutting against the second driving surface. In the second state, the second matching part can rotate synchronously under the drive of the first matching part. Since the unlocking mechanism 50 is connected between the second matching part and the rotating part 60, the second matching part rotating around the first axis a can drive the rotating part 60 to rotate around the first axis a through the unlocking mechanism 50, thereby finally realizing the driving of the locking mechanism 40.

[0079] That is to say, the process of the leg support 20 rotating toward the seat frame 10 is divided into two stages. The first stage is when the leg support 20 rotates along the seat frame 10. Figure 1 The second stage is that the leg support 20 rotates independently in the n direction. Figure 3The leg rest 20 continues to rotate in the middle n direction and the unlocking mechanism 50 is used to drive the rotating member 60 during the rotation process. Since the rotation angle required for the leg rest 20 to fold is greater than the rotation angle required for the armrest 30, it is more reasonable to divide the process of rotating the leg rest 20 toward the seat frame 10 into two stages, and synchronously drive the armrest 30 to rotate and fold in the second half.

[0080] In some embodiments, Fig.14 and Fig.15 As shown, one of the first matching portion and the second matching portion is an arc groove 721, and the other is a protrusion 711, and the protrusion 711 is placed in the arc groove 721 and can move in the arc groove 721. Fig.17 As shown, in the initial state, the protrusion 711 is located at the starting end of the arc groove 721; when the protrusion 711 rotates in the arc groove 721, the first matching portion is in the above-mentioned first state; when the protrusion 711 moves to the end of the arc groove 721 and abuts against the inner wall surface of the arc groove 721, the first matching portion continues to rotate and switches to the second state.

[0081] In one embodiment, the protrusion 711 is provided on the first transmission structure 71, and the arc groove 721 is provided on the second transmission structure 72; in another embodiment, the protrusion 711 is provided on the second transmission structure 72, and the arc groove 721 is provided on the first transmission structure 71; in yet another embodiment, the first transmission structure 71 is provided with both the protrusion 711 and the arc groove 721, and the second transmission structure 72 is also provided with both the protrusion 711 and the arc groove 721, the protrusion 711 on the first transmission structure 71 is slidably matched with the arc groove 721 on the second transmission structure 72, and the protrusion 711 on the second transmission structure 72 is slidably matched with the arc groove 721 on the first transmission structure 71. It should be noted that the arc groove 721 or protrusion 711 provided on the first transmission structure 71 may be one or more, and the arc groove 721 or protrusion 711 provided on the second transmission structure 72 may be one or more.

[0082] Of course, in other embodiments, the first matching part can also be a first convex part, and the second matching part can be a second convex part. Part of the outer wall surface of the first convex part forms a first driving surface, and part of the outer wall surface of the second convex part forms a second driving surface. Force transmission drive is achieved through external contact between the first driving surface and the second driving surface.

[0083] In order to limit the rotation angle and rotation direction of the second transmission structure 72, in some embodiments, as Fig.16 As shown, a first limiting surface 701 is formed on the second transmission structure 72, and a second limiting surface 161 is formed on the seat frame 10. The first limiting surface 701 and the second limiting surface 161 can be in limiting contact with each other to limit the rotation of the second transmission structure 72 around the first axis a.

[0084] In one embodiment, the second transmission structure 72 has an opening 724, and a limiting ridge 16 is formed at the front end of the seat frame 10. The limiting ridge 16 is placed in the opening 724. The relative position of the limiting ridge 16 in the opening 724 can be changed by rotating the second transmission structure 72. A first limiting surface 701 is respectively formed at both ends of the opening 724 formed on the second transmission structure 72, and a second limiting surface 161 is respectively formed at the two opposite ends of the limiting ridge 16. The relative first limiting surfaces 701 and the second limiting surfaces 161 are a group and can be abutted, thereby limiting the rotation of the second transmission structure 72 in the n direction.

[0085] In some embodiments, the second transmission structure 72 is provided with a second rope groove 723 for accommodating the rope body along the circumferential direction and a second fixing hole 722 for fixing the end of the rope body along the direction parallel to the rotation axis.

[0086] In order to improve the user's experience of stepping on the leg support 20, in some embodiments, the leg support 20 can also be locked and unlocked relative to the seat frame 10. Specifically, continue to refer to Fig.13 As shown, the seat pocket also includes a leg rest lock 80, which is movably arranged on the leg rest 20. The leg rest lock 80 is used to lock the relative rotation of the seat frame 10 and the leg rest 20, that is, the leg rest lock 80 can move to a locking position for locking the seat frame 10 and the leg rest 20 and an unlocking position for unlocking the seat frame 10 and the leg rest 20.

[0087] In some embodiments, a locking groove 141 is formed on the second mounting portion 14 of the seat frame 10 to cooperate with the leg rest locking member 80. The leg rest locking member 80 in the locked position is placed in the locking groove 141 and can be limited in the circumferential direction. The leg rest locking member 80 in the unlocked position is disengaged from the locking groove 141, thereby unlocking the leg rest 20. At this time, the leg rest 20 can be folded by applying force to the leg rest 20. Optionally, as Fig.18 As shown, the locking groove 141 is a tooth groove, and locking teeth 811 are at least partially formed on the leg support locking member 80.

[0088] In order to drive the leg support lock 80 so that the leg support lock 80 moves between the locked position and the unlocked position, continue to refer to Fig.13As shown, the seat pocket also includes a pulling member 90 and a flexible connector (not shown in the figure), one end of the pulling member 90 is connected to the leg support lock 80 through the flexible connector, and pulling the pulling member 90 can unlock the leg support lock 80. In some embodiments, the pulling member 90 is movably arranged on the leg support 20 along a first direction d, one end of the pulling member 90 is connected to the leg support lock 80 through a flexible connector, and the leg support lock 80 is movably arranged on the leg support 20 along a second direction e, and the first direction d and the second direction e are arranged at an angle. In one embodiment, the first direction d and the second direction e are arranged perpendicularly. Optionally, the flexible connector is a traction rope.

[0089] In order to improve the movement accuracy of the pulling member 90 in the first direction d, a guide structure is further provided on the back of the leg support 20, and the guide structure is used to guide the movement of the pull rod. Optionally, the guide structure is a guide groove or a guide rail.

[0090] In one embodiment, continue to refer to Fig.13 As shown, the leg support locking member 80 includes a second connecting member 81 and a third connecting member 82 which are spaced apart in a first direction d. The second connecting member 81 and the third connecting member 82 are connected via a connecting shaft. A locking tooth 811 is formed on the second connecting member 81. The third connecting member 82 is movably arranged in the rotating portion 22 of the pedal. One end of the flexible connecting member is connected to the pulling member 90, and the other end is connected to the third connecting member 82.

[0091] like Figures 1 to 5 , Fig.19 As shown, the seat pocket further includes a backrest 100, which is connected to the third mounting portion 15 of the seat frame 10. In some embodiments, the backrest 100 is rotatably connected to the third mounting portion 15 around the third axis c, and can be locked and unlocked with the seat frame 10. As for the structure for assisting the locking and unlocking of the backrest 100 and the seat frame 10, it can be the same as the structure for locking and unlocking the armrest 30 and the seat frame 10 mentioned above, and will not be described in detail here.

[0092] The following is with the help of Figures 1 to 5 , Fig.17 The process of switching the seat pocket from the working state to the storage state is introduced in detail.

[0093] First, when the seat pocket is Figure 1 and Figure 2 In the state shown, the user applies force to the leg support 20, and the leg support 20 rotates around the first axis a and in the direction n. During the rotation of the leg support 20, the protrusion 711 of the first transmission structure 71 moves in the arc groove 721 of the second transmission structure 72 until the protrusion 711 abuts against the end of the arc groove 721. At this time, the seat pocket is switched to Figure 3 Status shown in .

[0094] Then, the user continues to apply force to the leg rest 20, and the leg rest 20 continues to rotate around the first axis a in the direction n, so that the first transmission structure 71 and the second transmission structure 72 rotate synchronously around the direction n. During the rotation process of the second transmission structure 72, the second transmission structure 72 drives the rotating member 60 to rotate through the unlocking mechanism 50. During the rotation process of the rotating member 60, the locking mechanism 40 can be pushed from the locked position to the unlocked position, thereby unlocking the armrest 30. Then, the user applies force to the armrest 30, so that the armrest 30 rotates around the second axis b and in the direction q until it rotates to the position as shown in FIG. Figure 4 The status shown in .

[0095] Finally, the user unlocks the backrest 100 and manually drives the backrest 100 to rotate along the third axis c and in the direction m until it rotates to the position shown in FIG. Figure 5 The status shown in .

[0096] The utility model also provides a stroller, which includes a frame and the above-mentioned seat pocket, and the seat pocket is installed on the frame. The seat pocket of the stroller is easy to operate when folded, has high folding efficiency, and provides a good user experience. In some embodiments, the seat pocket is detachably connected to the frame, which improves the storage performance of the stroller. In some embodiments, the frame is configured as a foldable structure, which further improves the storage performance of the stroller.

[0097] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A seat pocket, characterized in that: include: Seat frame; A leg support, rotatably connected to the seat frame; An armrest, rotatably connected to the seat frame; A locking mechanism, movably disposed on the armrest or the seat frame, for locking the relative rotation between the seat frame and the armrest; an unlocking mechanism, respectively engaged with the leg rest and the locking mechanism; When the leg rest is folded toward the seat frame, the leg rest drives the unlocking mechanism to unlock the locking mechanism.

2. The seat pocket according to claim 1, characterized in that: When the leg rest is folded toward the seat frame, the leg rest first rotates relative to the unlocking mechanism, and when the leg rest rotates to the folded position, the leg rest drives the unlocking mechanism to move so as to unlock the locking mechanism.

3. The seat pocket according to claim 2, characterized in that: The leg rest rotates relative to the seat frame around a first axis a; the unlocking mechanism comprises a transmission member coaxially arranged with the leg rest, a traction member arranged between the transmission member and the armrest, a second matching portion arranged on the traction member and moving synchronously with the transmission member, and a first matching portion arranged on the leg rest and moving synchronously with the leg rest; When the first matching portion rotates to abut against the second matching portion, the first matching portion and the second matching portion rotate synchronously; when the traction member and the second matching portion rotate synchronously, the traction member unlocks the locking mechanism.

4. The seat pocket according to claim 3, characterized in that: One of the first matching portion and the second matching portion is an arc-shaped groove, and the other is a protrusion. The protrusion is placed in the arc-shaped groove and can move in the arc-shaped groove.

5. The seat pocket according to claim 3, characterized in that: A first limiting surface is formed on the transmission member, and a second limiting surface is formed on the seat frame. The first limiting surface and the second limiting surface can be in limiting contact with each other to limit the rotation of the transmission member around the first axis a.

6. The seat pocket according to claim 1, characterized in that: The seat pocket further comprises a rotating member, which is arranged between the locking mechanism and the seat frame. The unlocking mechanism is connected to the rotating member and can drive the rotating member to rotate around a second axis b to unlock the locking mechanism.

7. The seat pocket according to claim 6, characterized in that: In the circumferential direction around the second axis b, a first arc-shaped inclined surface is formed on the seat frame, and a second arc-shaped inclined surface is formed on the rotating member, and the first arc-shaped inclined surface and the second arc-shaped inclined surface are in contact with each other and can slide relative to each other; And / or, in the circumferential direction around the second axis b, a third arcuate inclined surface is formed on the locking mechanism, a fourth arcuate inclined surface is formed on the rotating member, and the third arcuate inclined surface and the fourth arcuate inclined surface abut against each other and can slide relative to each other; Wherein, when the rotating member rotates around the second axis b, it can drive the locking mechanism to move.

8. The seat pocket according to claim 7, characterized in that: The first arc-shaped inclined surface and the second arc-shaped inclined surface are both provided in plurality and are in one-to-one corresponding sliding abutment; And / or, the third arc-shaped inclined surface and the fourth arc-shaped inclined surface are both provided in plurality and are in one-to-one corresponding sliding abutment.

9. The seat pocket according to any one of claims 1 to 8, characterized in that: A toothed structure is formed on the locking mechanism; A first tooth groove is formed on the armrest, and a second tooth groove is formed on the seat frame. The locking mechanism can move to a locking position where it is simultaneously engaged in the first tooth groove and the second tooth groove, and the locking mechanism can move to an unlocking position where it is fully engaged in the first tooth groove.

10. The seat pocket according to any one of claims 1 to 8, characterized in that: The seat pocket also includes a leg rest locking piece, which is movably arranged on the leg rest and is used to lock the relative rotation between the seat frame and the leg rest.

11. The seat pocket according to claim 10, characterized in that: The seat pocket further comprises a pulling member and a flexible connecting member, one end of the pulling member is connected to the leg support locking member via the flexible connecting member, and the leg support locking member can be unlocked by pulling the pulling member.

12. A cart, characterized in that: The utility model comprises a frame and a seat pocket according to any one of claims 1 to 11, wherein the seat pocket is mounted on the frame.

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