stroller

Abstract

This application discloses a stroller, including a frame and a release assembly. The frame has a first tube and a second tube that are rotatably engaged, and can be switched between an unfolded state and a folded state. The release assembly includes a folding member and a locking member. The folding member is rotatably disposed on the first tube to switch between a first position and a second position. In the unfolded state, the folding member is in the first position, and in the folded state, the folding member is in the second position. When switching from the first position to the second position, the folding member moves away from the first tube along its own pivot axis, so that the folding member at least partially extends out of the contour range of the first tube and locks into the locking member. When switching from the second position to the first position, the folding member moves towards the first tube along its own pivot axis, so that the folding member can rotate within the contour range of the first tube. This ensures the aesthetics of the frame and also ensures that the folding member can lock into the locking member, so that the frame locks the first and second tubes in the folded state.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of baby strollers, in particular to a baby stroller. BACKGROUND

[0002] The prior art baby stroller locks the folded frame through a locking component. The existing locking component has a complex structure, is inconvenient to set, has a cumbersome locking process, is inconvenient to operate, and has poor locking ability. After the baby stroller is folded and locked, the frame is easy to open during storage and transportation, which is inconvenient for storage and transportation. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the purpose of the present application is to provide a baby stroller, the release lock assembly of which has a simple structure, is convenient to operate, is convenient to lock, and has better locking effect, and the frame is not easy to open.

[0004] The baby stroller according to the embodiments of the present application comprises a frame and a release lock assembly. The frame has a first pipe body and a second pipe body that are rotationally coupled to each other, so that the frame can be switched between an unfolded state and a stored state. The release lock assembly comprises a folding member and a locking member. The folding member is rotationally arranged on the first pipe body to be switched between a first position and a second position. The locking member is arranged on the second pipe body. In the unfolded state, the folding member is in the first position. In the stored state, the folding member is in the second position. When switched from the first position to the second position, the folding member moves away from the first pipe body along the axial direction of the pivot axis of the folding member, so that the folding member can be rotated to at least partially extend out of the contour range of the first pipe body, and the extending end is locked with the locking member. When switched from the second position to the first position, the folding member moves towards the first pipe body along the axial direction of the pivot axis of the folding member, so that the folding member can be rotated to be within the contour range of the first pipe body.

[0005] According to the baby stroller of the embodiments of the present application, the folding member can be switched between the first position and the second position by rotation, which is more convenient and simple. The first position of the folding member is arranged within the contour range of the first pipe body, which can ensure the appearance of the frame. The second position of the folding member is arranged to at least partially extend out of the contour range of the first pipe body, which can ensure that the folding member can be locked with the locking member, so that the first pipe body and the second pipe body are locked in the stored state, avoiding the first pipe body and the second pipe body from being loosened, and facilitating the carrying or storage of the frame.

[0006] In some embodiments, the stroller further comprises a fixing seat arranged on the first tube body, and the folding member is rotationally coupled with the fixing seat. In this way, by arranging the fixing seat, one end of the folding member can be fixed to the first tube body, and the other end can rotate relative to the first tube body, thereby switching the folding member between the first position and the second position.

[0007] Specifically, the fixing seat has a first ring body, the folding member has a second ring body, the first ring body is sleeved on the second ring body or the second ring body is sleeved on the first ring body, so that the fixing seat and the folding member are rotationally coupled. In this way, the first ring body and the second ring body have a simple structure and are easy to arrange, and the fixing seat and the folding member have a simple coupling mode, which can ensure the rotation of the folding member relative to the fixing seat.

[0008] In some embodiments, the release assembly further comprises a first cam, a second cam, and an elastic member, the first cam and the second cam are coaxially arranged and adapted to press against the elastic member, the first cam has a first cam top end and a first cam bottom end located on both sides of the first cam top end in the circumferential direction, the second cam has a second cam top end and a second cam bottom end located on both sides of the second cam top end in the circumferential direction, when the first cam top end is opposite to one side of the second cam bottom end of the second cam top end, the folding member is in the second position, and when the first cam top end is opposite to the other side of the second cam bottom end of the second cam top end, the folding member is in the first position. In this way, the first position and the second position of the folding member can be switched, and the accuracy of the position of the folding member can be ensured.

[0009] Specifically, the first cam is arranged on the fixing seat, and the second cam is arranged on the folding member. In this way, by rotating the second cam, the first cam top end can be matched with the second cam bottom end on both sides of the second cam top end in the circumferential direction, respectively, to switch the folding member between the first position and the second position.

[0010] Further, the folding member is provided with a third ring body, the fixing seat is provided with at least one first protrusion, the end of the third ring body is provided with at least one second protrusion and a first notch located on the side of the second protrusion, the first protrusion is arc-shaped and has an equivalent circle contour defining the first cam, and the second protrusion is arc-shaped and has an equivalent circle contour defining the second cam. In this way, the first cam can be defined on the fixing seat, and the second cam can be defined on the folding member. By matching the first protrusion with the first notch on both sides of the second protrusion, respectively, the folding member can be switched between the first position and the second position, and the folding member can be positioned in the first position or the second position, thereby ensuring the accuracy of the position of the folding member.

[0011] In some embodiments, a cross-shaped slot is formed on the bottom plate of the fixing base, and the bottom plate is defined with a plurality of elastic plate portions, at least one of the elastic plate portions is provided with the first protrusion and forms the elastic member. In this way, the fixing base has a simple structure, and the plurality of elastic plate portions have elastic buffering effect, so that the elastic deformation force of the elastic plate portion is only needed to be overcome when the folding member rotates, and the operation is more convenient.

[0012] Specifically, the folding member further has a third ring body, and the second ring body is located between the first ring body and the third ring body. In this way, the folding member is sleeved in the fixing base, and the folding member is located in the recess of the fixing base, so that the operation is facilitated, and the rotation of the folding member is facilitated.

[0013] In some embodiments, the fixing base further has a limiting portion, a limiting block extending in the radial direction is arranged between the second ring body and the third ring body, the limiting portion rotates in the annular groove defined by the second ring body and the third ring body, and is adapted to limit the rotation stroke of the limiting block to limit the rotation angle of the folding member. In this way, by arranging the limiting portion and the limiting block, the limiting portion slides in the annular groove, so that the limiting portion can abut against the limiting block, thereby limiting the rotation angle of the folding member and avoiding excessive rotation of the folding member.

[0014] Specifically, the limiting portion is two, the first protrusion on the fixing base is two, and each of the limiting portion and the first protrusion is located on one elastic plate portion, and the two first protrusions are opposite to each other, and the two limiting portions are opposite to each other. In this way, the folding member can be switched between the first position and the second position, the positioning strength of the first protrusion and the first notch is improved, the accuracy of the position of the folding member is ensured, and the rotation angle of the folding member is met, so as to strengthen the limitation of the rotation angle of the folding member.

[0015] Further, a stop rib is arranged between the limiting portion and the first ring body, and the stop rib is adapted to reduce the contact area between the second ring body and the bottom plate of the fixing base. In this way, the contact area between the second ring body and the bottom plate of the fixing base can be reduced, the friction between the second ring body and the bottom plate of the fixing base can be reduced, and the folding member can be rotated conveniently.

[0016] Preferably, a connecting column is further arranged on the side of the fixing base away from the folding member, and the connecting column is used to connect with the first pipe body. In this way, the connection between the fixing base and the first pipe body can be realized, and the fastening of the connection between the fixing base and the first pipe body is improved.

[0017] In some embodiments, the folding member comprises a plate body, one end of the plate body is configured as a pivoting end, the other end is configured as the extending end, and the width of the plate body gradually increases in the direction towards the extending end. In this way, the width of the plate body gradually increases in the direction towards the extending end, which facilitates the locking of the extending end and the locking member and improves the stability of the locking.

[0018] Specifically, the plate body is further provided with a reinforcing plate, the reinforcing plate is at least one, and the reinforcing plate gradually decreases in thickness in the direction towards the extending end. In this way, the reinforcing plate provided on the plate body can strengthen the structural strength of the plate body, the reinforcing plate gradually decreases in thickness in the direction towards the extending end, which facilitates the abutting of the locking member and the locking of the extending end and the locking member and improves the stability of the locking.

[0019] Further, the extending end is provided with an abutting portion, the abutting portion is connected with the reinforcing plate, and the locking member is adapted to abut against the abutting portion. In this way, the locking member can be stably clamped, and the stability of the clamping is ensured.

[0020] Further, the abutting portion defines an abutting surface on the side towards the pivoting end, the abutting surface has an abutting highest point and an abutting lowest point, and the locking member is located between the abutting highest point and the abutting lowest point. In this way, the locking member can be guided to be clamped, and the abutting lowest point can guide the locking member towards the abutting highest point. Since the seat cloth can be provided on the frame, the seat cloth can be between the abutting surface and the locking member when clamped, and a gap can be formed between the abutting portion and the locking member, so as to buffer the tension of the frame during folding.

[0021] Specifically, the abutting surface is configured as an arc surface. In this way, the abutting surface can be in close contact with the locking member, and the stability of the clamping of the abutting portion and the locking member is ensured.

[0022] Additional aspects and advantages of the present application will be in part apparent and in part expressly stated in the description that follows, and by practicing the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the description that follows, including the figures and the appended claims.

[0024] Figure 1 is a structural schematic view of a stroller in an unfolded state according to an embodiment of the present application;

[0025] Figure 2 is a structural schematic view of a stroller during folding according to an embodiment of the present application;

[0026] Figure 3is a structural schematic view of the stroller in the storage state according to an embodiment of the present application;

[0027] Figure 4 is a split schematic view of the stroller according to an embodiment of the present application;

[0028] Figure 5 is another split schematic view of the stroller according to an embodiment of the present application;

[0029] Figure 6 is a sectional view of the stroller according to an embodiment of the present application;

[0030] Figure 7 is Figure 6 is an enlarged view of the part A in the middle circle;

[0031] Figure 8 is a structural schematic view of the folding member according to an embodiment of the present application;

[0032] Figure 9 is a structural schematic view of one side of the fixing seat according to an embodiment of the present application;

[0033] Figure 10 is a structural schematic view of the other side of the fixing seat according to an embodiment of the present application.

[0034] Reference signs:

[0035] stroller 100,

[0036] frame 10, first pipe body 11, positioning hole 111, second pipe body 12,

[0037] release lock assembly 20,

[0038] folding member 21, plate body 211,

[0039] pivot end 2111, second ring body 21111, third ring body 21112, second protrusion 21113, first notch 21114, limiting stopper 21115,

[0040] extension end 2112, abutting portion 21121, abutting surface 211211, abutting highest point 211212, abutting lowest point 211213,

[0041] reinforcing plate 2113,

[0042] locking member 22,

[0043] fixing seat 30, first ring body 31, first protrusion 32, elastic plate portion 33, limiting portion 34, abutting rib 35, connecting column 36, cross slot 37, reinforcing rib 38. DETAILED DESCRIPTION

[0044] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] The following is for reference. Figures 1-10 A stroller 100 according to an embodiment of this application is described.

[0046] The stroller 100 according to an embodiment of this application includes: a frame 10 and a release assembly 20.

[0047] like Figures 1-3 As shown, the frame 10 has a first tube 11 and a second tube 12 that are rotatably engaged, allowing the frame 10 to switch between an extended state and a retracted state. The release assembly 20 includes a retracting member 21 and a locking member 22. The retracting member 21 is rotatably disposed on the first tube 11 to switch between a first position and a second position, and the locking member 22 is disposed on the second tube 12. In the extended state, the retracting member 21 is in the first position, and in the retracted state, the retracting member 21 is in the second position. When switching from the first position to the second position, the retracting member 21 moves away from the first tube 11 along its own pivot axis, so that the retracting member 21 can rotate to at least partially extend beyond the contour range of the first tube 11, and the extended end 2112 is locked in engagement with the locking member 22. When switching from the second position to the first position, the retracting member 21 moves closer to the first tube 11 along its own pivot axis, so that the retracting member 21 can rotate within the contour range of the first tube 11.

[0048] Specifically, the frame 10 includes a first tube 11 and a second tube 12. One end of the first tube 11 is connected to one end of the second tube 12. The first tube 11 is either a rear leg tube or a front leg tube, and the second tube 12 is the other of the rear leg tubes or front leg tubes. For example, the first tube 11 can be a rear leg tube, and the corresponding second tube 12 is a front leg tube, with the second tube 12 rotatable relative to the first tube 11; alternatively, the first tube 11 can be a front leg tube, and the corresponding second tube 12 is a rear leg tube, with the first tube 11 rotatable relative to the second tube 12. When the front leg tube rotates relative to the rear leg tube, the frame 10 is in a stowed state when it is close to the rear leg tube, and in an unfolded state when it is away from the rear leg tube. By rotating either the first tube 11 or the second tube 12, the frame 10 can switch between the unfolded and stowed states.

[0049] In addition, the frame 10 is provided with a release assembly 20, which is composed of a folding member 21 and a locking member 22. If the first tube body 11 is a rear tube body and the second tube body 12 is a front tube body, the folding member 21 is arranged on the first tube body 11, and the locking member 22 is arranged on the second tube body 12. The folding member 21 is rotatable relative to the first tube body 11 and can be switched between a first position and a second position. When the folding member 21 is in the first position, the frame 10 is in an unfolded state, and at this time, the folding member 21 is within the contour range of the first tube body 11. When the folding member 21 is in the second position, the frame 10 is in a folded state, and at this time, the folding member 21 is partially out of the contour range of the first tube body 11, the folding member 21 forms an angle with the first tube body 11, and the folding member 21 cooperates with the locking member 22 to lock the frame 10.

[0050] It should be noted that when the frame 10 is switched from the unfolded state to the folded state, the folding member 21 is switched from the first position to the second position. In this process, the folding member 21 moves away from the first tube body 11 along the axial direction of the pivot axis of the folding member 21, so that the folding member 21 is rotated to at least partially out of the contour range of the first tube body 11. The extending part of the folding member 21 is an extending end 2112. When the folding member 21 is switched to the second position, the extending end 2112 can be locked with the locking member 22. When the frame 10 is switched from the folded state to the unfolded state, the folding member 21 is switched from the second position to the first position. In this process, the folding member 21 moves towards the first tube body 11 along the axial direction of the pivot axis of the folding member 21, so that the folding member 21 can be rotated to be within the contour range of the first tube body 11.

[0051] According to the stroller 100 of the embodiment of the present application, the folding member 21 can be switched between the first position and the second position by rotation, which is more convenient and simple. The first position of the folding member 21 is arranged within the contour range of the first tube body 11, which can ensure the appearance of the frame 10. The second position of the folding member 21 is arranged to at least partially out of the contour range of the first tube body 11, which can ensure that the folding member 21 can be locked with the locking member 22, so that the frame 10 can be locked with the first tube body 11 and the second tube body 12 in the folded state, avoiding the first tube body 11 and the second tube body 12 from being loosened, facilitating the carrying or folding of the frame 10.

[0052] As shown in FIG. 1, Figures 4-7 In some embodiments, the stroller 100 further comprises a fixing seat 30 arranged on the first tube body 11, and the folding member 21 is rotationally matched with the fixing seat 30.

[0053] Specifically, the fixing seat 30 is arranged between the first pipe body 11 and the folding piece 21, the inner side of the fixing seat 30 is fixedly connected with the outer side of the first pipe body 11, one end of the folding piece 21 is rotationally connected with the outer side of the fixing seat 30, and the folding piece 21 can rotate relative to the fixing seat 30. In this way, by arranging the fixing seat 30, one end of the folding piece 21 can be connected to the first pipe body 11, the other end of the folding piece 21 can rotate relative to the first pipe body 11, and the folding piece 21 can be switched between the first position and the second position.

[0054] As shown in Figure 8 and Figure 9 Specifically, the fixing seat 30 is provided with a first ring body 31, and the folding piece 21 is provided with a second ring body 21111, the first ring body 31 is sleeved on the second ring body 21111 or the second ring body 21111 is sleeved on the first ring body 31, so that the fixing seat 30 and the folding piece 21 are rotationally connected.

[0055] It should be noted that the side of the fixing seat 30 connected with the folding piece 21 is the outer side of the fixing seat 30, the outer side of the fixing seat 30 is provided with the first ring body 31, the side of the folding piece 21 connected with the fixing seat 30 is provided with the second ring body 21111, the outer side of the fixing seat 30 is inwardly recessed to form a recess, the protrusion of the outer side of the recess is the first ring body 31, the second ring body 21111 is arranged as a ring-shaped protrusion, the first ring body 31 is sleeved on the second ring body 21111 or the second ring body 21111 is sleeved on the first ring body 31, the fixing seat 30 and the folding piece 21 are movably connected, and the two are rotationally connected. In this way, the first ring body 31 and the second ring body 21111 have simple structures and are convenient to arrange, the connection mode of the fixing seat 30 and the folding piece 21 is simple, and the folding piece 21 can be ensured to rotate relative to the fixing seat 30.

[0056] In some embodiments, the release lock assembly 20 further comprises a first cam, a second cam and an elastic piece, the first cam and the second cam are coaxially arranged and adapted to press against the elastic piece, the first cam has a first cam top end and first cam bottom ends located on both sides of the first cam top end in the circumferential direction, the second cam has a second cam top end and second cam bottom ends located on both sides of the second cam top end in the circumferential direction, when the first cam top end is opposite to one side of the second cam bottom ends of the second cam top end, the folding piece 21 is in the second position, and when the first cam top end is opposite to the other side of the second cam bottom ends of the second cam top end, the folding piece 21 is in the first position.

[0057] Specifically, the first cam is coaxially arranged with the second cam, the elastic member is arranged on one side of the two cams, and the elastic member enables the two cams to move in the axial direction. When the second cam moves to the second cam bottom end on the side of the second cam top end opposite to the first cam top end, the first cam top end is fitted in the second cam bottom end on the side of the second cam top end, and at this time, the folding member 21 is in the second position. When the second cam moves to the second cam bottom end on the other side of the second cam top end opposite to the first cam top end, the first cam top end is fitted in the second cam bottom end on the other side of the second cam top end, and at this time, the folding member 21 is in the first position. In this way, the first position and the second position of the folding member 21 can be switched, and the accuracy of the position of the folding member 21 can be ensured.

[0058] Specifically, the first cam is arranged on the fixed seat 30, and the second cam is arranged on the folding member 21. The first cam and the second cam are oppositely arranged, the first cam top end protrudes towards the folding member 21, and the second cam top end protrudes towards the fixed seat 30. When the folding member 21 rotates, the second cam also rotates synchronously. In this way, through the rotation of the second cam, the first cam top end can be fitted with the second cam bottom end on the circumferential two sides of the second cam top end, so as to realize the switching of the folding member 21 between the first position and the second position.

[0059] As shown in Figure 8 and Figure 9 Further, the folding member 21 is provided with a third ring body 21112, the fixed seat 30 is provided with at least one first protrusion 32, the end of the third ring body 21112 is provided with at least one second protrusion 21113 and a first notch 21114 located on the circumferential side of the second protrusion 21113, the first protrusion 32 is arc-shaped and has an equivalent circular contour to define a first cam, and the second protrusion 21113 is arc-shaped and has an equivalent circular contour to define a second cam.

[0060] Specifically, the third ring body 21112 is an annular protrusion located in the inner ring of the second ring body 21111, the diameter of the third ring body 21112 is smaller than the diameter of the second ring body 21111, and the end of the third ring body 21112, i.e. the side of the third ring body 21112 facing the fixed seat 30, is provided with at least one second protrusion 21113, and the two sides of the second protrusion 21113 are respectively provided with one first notch 21114. The first notch 21114 is recessed. If the end of the third ring body 21112 is provided with one second protrusion 21113, the two sides of the second protrusion 21113 are respectively provided with one first notch 21114; if the end of the third ring body 21112 is provided with two second protrusions 21113, the two second protrusions 21113 are oppositely arranged, and the two sides of the two opposite second protrusions 21113 are respectively provided with a first notch 21114.

[0061] It should be noted that the first protrusion 32 is arranged on the fixing seat 30, the first protrusion 32 is arc-shaped and has an equivalent circular contour to define a first cam, the second protrusion 21113 is arc-shaped and has an equivalent circular contour to define a second cam, the number of the first protrusions 32 is consistent with the number of the second protrusions 21113, when the first protrusion 32 cooperates with one first notch 21114 on one side of the second protrusion 21113, the folding piece 21 is in the second position, and when the first protrusion 32 cooperates with one first notch 21114 on the other side of the second protrusion 21113, the folding piece 21 is in the first position.

[0062] In this way, the first cam is defined on the fixing seat 30, the second cam is defined on the folding piece 21, the first protrusion 32 cooperates with the first notch 21114 on the two sides of the second protrusion 21113 to switch the folding piece 21 between the first position and the second position, and the folding piece 21 can be positioned in the first position or the second position to ensure the accuracy of the position of the folding piece 21.

[0063] As shown in Figure 9 Preferably, a cross slot 37 is formed in the bottom plate of the fixing seat 30, and the bottom plate is defined as a plurality of elastic plate portions 33, at least one of the plurality of elastic plate portions 33 is provided with the first protrusion 32 and forms an elastic member.

[0064] Specifically, the fixing seat 30 is provided with an opening at the center of the bottom plate, and the cross slot 37 is further arranged on the bottom plate, which defines the bottom plate into four elastic plate portions 33, and at least one first protrusion 32 is arranged on the fixing seat 30, and the first protrusion 32 is arranged at one end of one of the elastic plate portions 33 close to the opening. In this way, the fixing seat 30 has a simple structure, and the plurality of elastic plate portions 33 have elastic buffering effect, so that when the folding piece 21 rotates, only the elastic deformation force of the elastic plate portion 33 pushed by the second protrusion 21113 needs to be overcome, and the operation is more convenient.

[0065] As shown in Figure 7 In some embodiments, the folding piece 21 further has a third ring body 21112, and the second ring body 21111 is located between the first ring body 31 and the third ring body 21112. In this way, the folding piece 21 is sleeved in the fixing seat 30, the folding piece 21 is located in the recess of the fixing seat 30, which is convenient for operation and facilitates rotation of the folding piece 21.

[0066] As shown in Figure 8 and Figure 9As shown, specifically, the fixing base 30 is further provided with a limiting portion 34, and a limiting block 21115 extending in the radial direction is arranged between the second ring body 21111 and the third ring body 21112. The limiting portion 34 rotates in the annular groove defined by the second ring body 21111 and the third ring body 21112, and is adapted to limit the rotating stroke of the limiting block 21115 to limit the rotating angle of the folding member 21.

[0067] It should be noted that the limiting portion 34 is a protruding structure arranged on the elastic plate portion 33. The elastic plate portion 33 provided with the limiting portion 34 is adjacent to the elastic plate portion 33 provided with the first protrusion 32. An annular groove is formed between the second ring body 21111 and the third ring body 21112, and a protrusion extending in the radial direction, i.e., the limiting block 21115, is arranged in the annular groove. The limiting portion 34 slides along the annular groove. The limiting block 21115 is two limiting blocks arranged at intervals. The limiting portion 34 can be one limiting portion, and the two sides of the limiting portion 34 can respectively push against the two limiting blocks 21115. The limiting portion 34 can also be two limiting portions arranged correspondingly. The two limiting portions 34 are distributed in the axial direction, and the two limiting portions 34 respectively abut against the two limiting blocks 21115.

[0068] In this way, by arranging the limiting portion 34 and the limiting block 21115, the limiting portion 34 slides in the annular groove, so that the limiting portion 34 can abut against the limiting block 21115, thereby limiting the rotating angle of the folding member 21 and avoiding excessive rotation of the folding member 21.

[0069] As shown in Figure 9 Further, the limiting portion 34 is two limiting portions, and the first protrusion 32 on the fixing base 30 is two first protrusions. Each limiting portion 34 and each first protrusion 32 is arranged on one elastic plate portion 33. The two first protrusions 32 are opposite to each other, and the two limiting portions 34 are opposite to each other.

[0070] Specifically, the fixing base 30 is provided with two first protrusions 32, and the two first protrusions 32 are arranged on two opposite elastic plate portions 33. The two first protrusions 32 are opposite to each other. The fixing base 30 is further provided with two limiting portions 34, and the two limiting portions 34 are arranged on two other opposite elastic plate portions 33. The two limiting portions 34 are opposite to each other. In this way, the folding member 21 can be switched between the first position and the second position. The positioning strength of the first protrusion 32 and the first notch 21114 is improved, the accuracy of the position of the folding member 21 is ensured, and the rotating angle of the folding member 21 is met, so as to strengthen the limitation of the rotating angle of the folding member 21.

[0071] As shown in Figure 9 Still further, a stop rib 35 is arranged between the limiting portion 34 and the first ring body 31. The stop rib 35 is adapted to reduce the contact area between the second ring body 21111 and the bottom plate of the fixing base 30.

[0072] It should be noted that the stop rib 35 is provided on the elastic plate portion 33 with the limiting portion 34. One end of the stop rib 35 abuts against the first ring body 31 and the other end abuts against the limiting portion 34. When the second ring body 21111 is fitted into the first ring body 31, the stop rib 35 moves to abut against the second ring body 21111. In this way, the contact area between the second ring body 21111 and the bottom plate of the fixed seat 30 can be reduced, the friction between the second ring body 21111 and the bottom plate of the fixed seat 30 can be reduced, and the rotation of the closing part 21 can be facilitated.

[0073] like Figure 10 As shown, in some embodiments, the fixing base 30 is also provided with a connecting post 36 on the side opposite to the retracting member 21, and the connecting post 36 is used to connect to the first tube body 11.

[0074] Specifically, the side of the fixing seat 30 away from the retracting member 21 is the inner side of the fixing seat 30, which is provided with a connecting post 36 extending toward the first tube 11. The connecting post 36 and the limiting block are located on different sides of the same elastic plate part 33. The first tube 11 is provided with a positioning hole 111. The positioning hole 111 is the same size and number as the connecting post 36. The connecting post 36 fits into the positioning hole 111. In this way, the fixing seat 30 and the first tube 11 can be connected, which improves the tightness of the connection between the two.

[0075] In addition, a reinforcing rib 38 is provided on the side of the fixing seat 30 away from the retracting member 21. The reinforcing rib 38 and the connecting post 36 are located in the same elastic plate portion 33. It extends from the bottom plate opening to the connecting post 36. The reinforcing rib 38 can enhance the elastic strength of the elastic plate portion 33 where the limiting block is located, so as to ensure the stability of the locking.

[0076] like Figure 10 As shown, specifically, there are at least two connecting posts 36, and the dimensions of the at least two connecting posts 36 are different. The fixing base 30 is provided with at least two connecting posts 36, which are spaced apart. For example, if the fixing base 30 has two connecting posts 36, the two connecting posts 36 can be arranged symmetrically in the radial direction; if the fixing base 30 has three connecting posts 36, the three connecting posts 36 can be distributed in a triangular pattern. Since the dimensions of the at least two connecting posts 36 are different, the diameters of the at least two positioning holes 111 on the corresponding first tube body 11 are also different.

[0077] By setting the dimensions of at least two connecting posts 36 and at least two positioning holes 111 to be different, it can prevent mistakes, ensure that the fixing seat 30 is installed correctly, and improve the stability of the connection between the fixing seat 30 and the first tube 11.

[0078] like Figure 8As shown, in some embodiments, the folding member 21 comprises a plate body 211, one end of the plate body 211 is configured as a pivoting end 2111, and the other end is configured as an extending end 2112. The width of the plate body 211 gradually increases in the direction towards the extending end 2112.

[0079] Specifically, the pivoting end 2111 is connected with the fixing seat 30 by a fastener, and the plate body 211 rotates around the fastener as the pivoting shaft. When the folding member 21 is switched from the first position to the second position, it moves away from the first pipe body 11 along the axial direction of the pivoting shaft, and the extending end 2112 extends out of the contour range of the first pipe body 11. The width of the plate body 211 gradually increases in the direction towards the extending end 2112, which facilitates the locking cooperation between the extending end 2112 and the locking member 22 and improves the stability of the locking.

[0080] As shown in Figure 7 and Figure 8 Specifically, the plate body 211 is further provided with a reinforcing plate 2113. The reinforcing plate 2113 is at least one, and the thickness of the reinforcing plate 2113 gradually decreases in the direction towards the extending end 2112.

[0081] It should be noted that one side of the reinforcing plate 2113 is connected with the plate body 211, and the other side extends towards the first pipe body 11. At least one reinforcing plate 2113 is arranged on the plate body 211. If multiple reinforcing plates 2113 (two or more) are arranged, the multiple reinforcing plates 2113 are spaced apart, and the thickness of the reinforcing plate 2113 gradually decreases in the direction towards the extending end 2112, and the reinforcing plate 2113 is inclined. In this way, the reinforcing plate 2113 arranged on the plate body 211 can strengthen the structural strength of the plate body 211. The reinforcing plate 2113 arranged to gradually decrease in thickness in the direction towards the extending end 2112 can abut against the locking member 22, facilitate the locking of the extending end 2112 and the locking member 22, and improve the stability of the locking.

[0082] As shown in Figure 8 Further, the extending end 2112 is provided with an abutting portion 21121, the abutting portion 21121 is connected with the reinforcing plate 2113, and the locking member 22 is adapted to abut against the abutting portion 21121. The abutting portion 21121 is connected with the end of the reinforcing plate 2113 with a larger thickness, and is located below the reinforcing plate 2113. When the folding member 21 is locked with the locking member 22, the locking member 22 is clamped into the abutting portion 21121, and the abutting portion 21121 is stopped above the locking member 22. In this way, the locking member 22 can be stably clamped, and the stability of the clamping is ensured.

[0083] As shown in Figure 8Further, as shown, the abutting portion 21121 defines an abutting surface 211211 toward one side of the pivoting end 2111, the abutting surface 211211 has an abutting highest point 211212 and an abutting lowest point 211213, and the locking piece 22 is located between the abutting highest point 211212 and the abutting lowest point 211213.

[0084] Specifically, the abutting surface 211211 has the abutting highest point 211212 on one side and the abutting lowest point 211213 on the other side, which is arranged to facilitate the locking piece 22 to be engaged, and the abutting lowest point 211213 can guide the locking piece 22 to the abutting highest point 211212. Since the seat cloth can be arranged on the frame 10, the seat cloth can be arranged between the abutting surface 211211 and the locking piece 22 when engaged, so that a gap can be formed between the abutting portion 21121 and the locking piece 22, thereby buffering the tension of the frame 10 when folded.

[0085] Specifically, the abutting surface 211211 is configured as a curved surface. The abutting surface 211211 is arranged as a curved surface, which can be in close contact with the locking piece 22, thereby ensuring the stability of the engagement between the abutting portion 21121 and the locking piece 22.

[0086] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0087] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0088] In the description of the present application, "a plurality of" means two or more.

[0089] In the description of the present application, "above" or "below" the first feature in the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween.

[0090] In the description of the present application, "above", "over" and "on" the first feature in the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0091] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0092] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A stroller, characterized in that, The utility model relates to a folding bicycle, comprising: a frame having a first tube and a second tube pivotally connected to each other so that the frame can be switched between an unfolded state and a folded state; a release lock assembly comprising a folding member pivotally arranged on the first tube to be switched between a first position and a second position, and a locking member arranged on the second tube, wherein the folding member is in the first position in the unfolded state and in the second position in the folded state; and when switched from the first position to the second position, the folding member moves along its own pivot axis away from the first tube so that the folding member can be rotated to at least partially extend out of the profile of the first tube and the extended end is locked with the locking member; when switched from the second position to the first position, the folding member moves along its own pivot axis towards the first tube so that the folding member can be rotated to be within the profile of the first tube. The first tube is provided with a fixed seat, the folding member is pivotally connected to the fixed seat, the fixed seat has a first ring, the folding member has a second ring, and the folding member further has a third ring, wherein the second ring is located between the first ring and the third ring. The fixed seat further has a limiting part, a limiting block extending radially is arranged between the second ring and the third ring, the limiting part rotates in the annular groove defined by the second ring and the third ring, and is adapted to limit the rotation stroke of the limiting block to limit the rotation angle of the folding member. The limiting part has two first protrusions, each of the limiting part and the first protrusion is located on an elastic plate, the two first protrusions are opposite to each other, and the two limiting parts are opposite to each other. A stop rib is arranged between the limiting part and the first ring, and the stop rib is adapted to reduce the contact area between the second ring and the bottom plate of the fixed seat.

2. The stroller of claim 1, wherein, The first ring is sleeved on the second ring or the second ring is sleeved on the first ring, so that the fixed seat and the folding member are pivotally connected.

3. The stroller of claim 1, wherein, The release lock assembly further comprises a first cam, a second cam and an elastic member, the first cam and the second cam are coaxially arranged and adapted to press against the elastic member, the first cam has a first cam top end and a first cam bottom end located on the circumferential two sides of the first cam top end, the second cam has a second cam top end and a second cam bottom end located on the circumferential two sides of the second cam top end, when the first cam top end is opposite to the second cam bottom end on one side of the second cam top end, the folding member is in the second position, and when the first cam top end is opposite to the second cam bottom end on the other side of the second cam top end, the folding member is in the first position.

4. The stroller of claim 3, wherein, The first cam is arranged on the fixed seat, and the second cam is arranged on the folding member.

5. The stroller of claim 4, wherein, The third ring body is provided on the folding member, the fixing seat is provided with at least one first protrusion, the end of the third ring body is provided with at least one second protrusion and a first notch located on the side of the second protrusion, the first protrusion is arc-shaped and has an equivalent circle contour to define the first cam, and the second protrusion is arc-shaped and has an equivalent circle contour to define the second cam.

6. The stroller of claim 5, wherein, The bottom plate of the fixing seat is provided with a cross-shaped slot, and the bottom plate is defined with a plurality of elastic plate portions, at least one of the plurality of elastic plate portions is provided with the first protrusion and forms the elastic member.

7. The stroller of claim 1, wherein, The side of the fixing seat away from the folding member is further provided with a connecting column for connecting with the first pipe body.

8. The stroller of claim 1, wherein, The folding member comprises a plate body, one end of the plate body is configured as a pivoting end, the other end is configured as the extending end, and the width of the plate body gradually increases in the direction towards the extending end.

9. The stroller of claim 8, wherein, The plate body is further provided with a reinforcing plate, the reinforcing plate is at least one, and the thickness of the reinforcing plate gradually decreases in the direction towards the extending end.

10. The stroller of claim 9, wherein, The extending end is provided with an abutting portion, the abutting portion is connected with the reinforcing plate, and the locking member is adapted to abut against the abutting portion.

11. The stroller of claim 10, wherein, The side of the abutting portion towards the pivoting end defines an abutting surface, the abutting surface has an abutting highest point and an abutting lowest point, and the locking member is located between the abutting highest point and the abutting lowest point.

12. The stroller of claim 11, wherein, The abutting surface is configured as an arc surface.

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