Swing mechanism and seat connecting structure

Abstract

The utility model discloses a swing mechanism and a seat connecting structure. The swing mechanism comprises a fixed part (41), a swing arm (21) and an abutting part (42). The fixing piece (41) is provided with a first limiting surface (4111) and a second limiting surface (4112); the swing arm (21) is provided with a pivot (211), and the pivot (211) can pivot relative to the fixed part (41); the abutting piece (42) is connected with the pivot (211) and located between the first limiting face (4111) and the second limiting face (4112), and the abutting piece (42) abuts against the first limiting face (4111) and the second limiting face (4112) to limit the swing angle of the swing arm (21).

Description

[0001] This application is a divisional application of the application with application date of July 21, 2023, application number 202321947787.3, and invention name “Child Carrier”. Technical Field

[0002] The utility model relates to a children's carrier, a swing mechanism and a seat connection structure. Background Art

[0003] Child carriers such as children's dining chairs and child strollers all include a main frame and a seat supported by the main frame. Utility Model Content

[0004] In one aspect of the present invention, a swing mechanism is provided, comprising: a fixing member, a swing arm and an abutting member.

[0005] The fixing member is provided with a first limiting surface and a second limiting surface.

[0006] The swing arm has a pivot, and the pivot can pivot relative to the fixing member.

[0007] The abutment member is connected to the pivot and is located between the first limiting surface and the second limiting surface. The abutment member limits the swing angle of the swing arm by abutting against the first limiting surface and the second limiting surface.

[0008] In some embodiments, the fixing member is provided with a limiting groove.

[0009] The first limiting surface and the second limiting surface are formed on the side walls of the limiting groove; or, a limiting member is provided in the limiting groove, and the first limiting surface and the second limiting surface are formed on the limiting member.

[0010] In some embodiments, the extending direction of the limiting groove is perpendicular to the axial direction of the pivot, and the limiting groove has a notch.

[0011] The sidewall of the limiting groove includes a first sidewall and a second sidewall parallel to each other, and the first limiting surface and the second limiting surface are formed on the first sidewall and the second sidewall.

[0012] The abutment member is inserted into the limiting groove through the notch and includes a first pair of parallel surfaces and a second pair of parallel surfaces.

[0013] When the first pair of parallel surfaces swings to abut against the first limiting surface, the swing arm is restricted from continuing to swing in the first direction; and when the second pair of parallel surfaces swings to abut against the second limiting surface, the swing arm is restricted from continuing to swing in the second direction, and the first direction is opposite to the second direction.

[0014] In some embodiments, the extending direction of the limiting groove is perpendicular to the axial direction of the pivot, and the position of the limiting member in the limiting groove is adjustable.

[0015] The limiting member has an opening for the pivot to pass through, and the opening includes a first hole portion and a second hole portion; the first hole portion includes a first wall and a second wall, the first limiting surface and the second limiting surface are formed on the first wall and the second wall, and the second hole portion is used to engage with the abutment member to lock the swing arm.

[0016] In some embodiments, the extending direction of the limiting groove is parallel to the axial direction of the pivot.

[0017] The limiting member includes a first area and a second area, the first area has the first limiting surface and the second limiting surface, and the second area is suitable for engaging with the abutting member to lock the swing arm.

[0018] The limiting member is slidably engaged with the limiting groove and has a first position and a second position. When the limiting member is in the first position, the first area is engaged with the abutting member. When the limiting member is in the second position, the second area is engaged with the abutting member.

[0019] In some embodiments, the limiting member includes a force-bearing plate and at least one arm extending from the force-bearing plate, and the first area and the second area are formed on the at least one arm.

[0020] At least one first groove is provided on the outer periphery of the abutting member, the at least one arm passes through the at least one first groove, and the first area is adapted to swing in the corresponding first groove.

[0021] The abutment member is further provided with at least one second groove portion, and the second area is adapted to engage with a corresponding second groove portion.

[0022] In some embodiments, the child carrier further includes a driving wheel, which is mounted on the pivot and abuts against the force-bearing plate.

[0023] One of the wall of the limiting groove and the driving wheel is provided with a ratchet portion, and the other is provided with a ratchet groove portion. The ratchet groove portion is provided with a first ratchet groove having a first groove depth and a second ratchet groove having a second groove depth in a circumferential direction, wherein the first groove depth and the second groove depth are unequal. When the driving wheel is subjected to a pressing force, it moves axially and rotates circumferentially, so that the ratchet portion sequentially engages with the first ratchet groove and the second ratchet groove. Another aspect of the present invention provides a seat connection structure, comprising: a support frame, a first positioning groove, a second positioning groove, and a locking device.

[0024] The support frame includes a first support rod and a second support rod that are arranged opposite to each other.

[0025] The first positioning groove and the second positioning groove are arranged on a first surface of a seat, the first positioning groove accommodates the first support rod, and the second positioning groove accommodates the second support rod.

[0026] The locking device includes a first stopper, a second stopper and an elastic element; the first stopper and the second stopper are both slidably engaged with the seat, and the elastic element is used to drive the first stopper and the second stopper to a locking position.

[0027] In some embodiments, the second side of the seat is provided with a first slide groove and a second slide groove, the first slide groove intersects with the first positioning groove, and the second slide groove intersects with the second positioning groove; the second side of the seat and the first side of the seat are back to back with each other.

[0028] The first stopper is slidably disposed in the first sliding groove, and the second stopper is slidably disposed in the second sliding groove.

[0029] In some embodiments, the seat is further provided with a third slide groove, and the first slide groove and the second slide groove are communicated with each other through the third slide groove.

[0030] The locking device also includes a connecting frame; wherein, the connecting frame is arranged in the third slide groove, and the two ends of the connecting frame are respectively provided with a first surface and a second surface bent downward relative to the connecting frame, the first stopper is connected to the first surface, and the second stopper is connected to the second surface.

[0031] A fourth elongated hole is provided on the bottom wall of the third sliding groove, a fastener is installed on the connecting frame, and a first end of the fastener passes through the fourth elongated hole.

[0032] In some embodiments, the first surface of the seat is further provided with a fourth slide groove, the third slide groove and the fourth slide groove are adjacent to each other in the extension direction of the fastener, and the fourth slide groove is located between the first slide groove and the second slide groove.

[0033] The locking device further includes a third releasing member, which is accommodated in the fourth sliding groove, and the first end of the fastener is connected to the third releasing member.

[0034] The elastic element is clamped between the side wall of the fourth sliding groove and the third releasing member.

[0035] In some embodiments, the first end of the third release member has a first accommodating groove, the first accommodating groove is used to accommodate the end of the elastic element, and the second end of the third release member is provided with a pressing recess.

[0036] A shield is provided in a partial area of ​​the fourth sliding groove, and the shield shield blocks the elastic element.

[0037] In some embodiments, the locking device also includes a second linkage, which is operably connected to the first stopper and the second stopper, wherein when one of the first stopper and the second stopper is pushed to release one of the first support rod and the second support rod, under the action of the second linkage, the other of the first stopper and the second stopper is pushed to release the other of the first support rod and the second support rod.

[0038] In some embodiments, the second side of the seat is provided with a main slide groove, and the main slide groove intersects with the first positioning groove and the second positioning groove respectively; the second side of the seat and the first side of the seat face back to back with each other.

[0039] The first stopper and the second stopper are slidably disposed in the main slide groove.

[0040] In some embodiments, the first end of the first stopper and the first end of the second stopper, which are far away from each other, are used to lock the first support rod and the second support rod, respectively.

[0041] A first connecting protrusion and a second connecting protrusion are respectively provided at the second end portion of the first stopper and the second end portion of the second stopper which are close to each other.

[0042] The second linking member is a rod, a first end of the second linking member is pivotally connected to the first connecting protrusion, and a second end of the second linking member is pivotally connected to the second connecting protrusion.

[0043] In some embodiments, the elastic element includes a first spring and a second spring; the first spring is arranged between the end of the first connecting protrusion and the second stopper, and the second spring is arranged between the end of the second connecting protrusion and the first stopper.

[0044] In some embodiments, a first protrusion is provided at the first end of the second linking member, and a second protrusion is provided at the second end of the second linking member.

[0045] The first connecting protrusion is provided with a fifth elongated hole that is slidably matched with the first protrusion, and the second connecting protrusion is provided with a sixth elongated hole that is slidably matched with the second protrusion.

[0046] The first connecting protrusion is provided with a first recess, the first end of the second linking member is embedded in the first recess, and the first protrusion passes through the first recess and enters the fifth elongated hole.

[0047] The second connecting protrusion is provided with a second recess, the second end of the second linking member is embedded in the second recess, and the second protrusion passes through the second recess and enters the sixth elongated hole.

[0048] In some embodiments, the side wall of the main slide is provided with a first wedge block and a second wedge block, the first wedge block is used to press the first stopper, and the second wedge block is used to press the second stopper.

[0049] The first end portion of the first stopper and the first end portion of the second stopper, which are far away from each other, are respectively provided with a pushing inclined surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A perspective view schematically shows a child carrier according to a first embodiment of the present invention;

[0051] Figure 2 Schematically shows a side view of a child carrier provided according to a first embodiment of the present invention;

[0052] Figure 3 A perspective view schematically shows a seat of a child carrier according to a first embodiment of the present invention, wherein a side guardrail is omitted;

[0053] Figure 4 A perspective view schematically shows a main frame of a child carrier provided according to a first embodiment of the present invention;

[0054] Figure 5 Schematically shown Figure 4 AA partial cross-sectional view in;

[0055] Figure 6 Schematically shows a partial cross-sectional view of a pivot axis of a child carrier provided according to a first embodiment of the present invention;

[0056] Figure 7 The diagram schematically illustrates the exploded structure of the connection between the support tube and the swing arm of the child carrier provided in accordance with the first embodiment of the present invention in one direction;

[0057] Figure 8 A partial perspective view schematically shows a first mounting housing and a first release member of a child carrier according to a first embodiment of the present invention;

[0058] Figure 9 The diagram schematically illustrates the exploded structure of the connection between the support tube and the swing arm of the child carrier provided in accordance with the first embodiment of the present invention in another direction;

[0059] Figure 10A perspective view schematically shows a pivot shaft, a first sleeve, an abutment member, and a first limiting structure of a child carrier according to a first embodiment of the present invention;

[0060] Figure 11 Schematically shown Figure 6 BB cross-sectional view in which the first release member is in the release position and the swing arm swings to an extreme position;

[0061] Figure 12 Schematically shown Figure 6 BB cross-sectional view in which the first release member is in the release position and the swing arm swings to another extreme position;

[0062] Figure 13 Schematically shown Figure 6 BB cross-sectional view in which the first release member is in the locked position and the swinging of the swing arm is locked;

[0063] Figure 14 A perspective view schematically shows a main frame of a child carrier according to a second embodiment of the present invention;

[0064] Figure 15 Schematically shows a partial cross-sectional view of a pivot axis of a child carrier provided according to a second embodiment of the present invention;

[0065] Figure 16 The diagram schematically illustrates the exploded structure of the connection between the support tube and the swing arm of the child carrier provided in accordance with the second embodiment of the present invention in one direction;

[0066] Figure 17 The diagram schematically illustrates the exploded structure of the connection between the support tube and the swing arm of the child carrier according to the second embodiment of the present invention in another direction;

[0067] Figure 18 A schematic side view of the connection between the support tube and the swing arm of the child carrier according to the second embodiment of the present invention is shown. For ease of illustration, the fourth housing portion is omitted in the figure, and the second release member is in the released position.

[0068] Figure 19 A schematic side view of the connection between the support tube and the swing arm of a child carrier according to a second embodiment of the present invention is shown. For ease of illustration, the fourth housing portion is omitted in the figure, and the second release member is in the locked position.

[0069] Figure 20 Schematically shown Figure 15 CC sectional view in which the second release member is in the release position;

[0070] Figure 21 Schematically shown Figure 15CC sectional view in which the second release member is in the locked position;

[0071] Figure 22 Schematically showing an exploded view of a seat connection structure provided in a top view according to a third embodiment of the present invention;

[0072] Figure 23 Schematically showing an exploded view of a seat connection structure provided in a third embodiment of the present invention when viewed from above;

[0073] Figure 24 Schematically shows a partial bottom view of a seat connection structure provided according to a third embodiment of the present invention, wherein the locking device is in a locked state;

[0074] Figure 25 Schematically shown Figure 24 DD cross-sectional view in;

[0075] Figure 26 A partial cross-sectional view schematically shows a seat connection structure according to a third embodiment of the present invention, wherein the locking device is in a released state;

[0076] Figure 27 Schematically shown Figure 26 EE cross-sectional view in;

[0077] Figure 28 Schematically showing an exploded view of a seat connection structure provided in a fourth embodiment of the present invention as viewed from above;

[0078] Figure 29 Schematically showing an exploded view of a seat connection structure provided in a fourth embodiment of the present invention when viewed from above;

[0079] Figure 30 Schematically shows a partial bottom view of a seat connection structure provided according to a fourth embodiment of the present utility model, wherein the locking device is in a locked state;

[0080] Figure 31 Schematically shown Figure 30 FF cross-sectional view in;

[0081] Figure 32 A partial cross-sectional view schematically shows a seat connection structure according to a fourth embodiment of the present invention, wherein the locking device is in a released state;

[0082] Figure 33 Schematically shown Figure 32 GG cross-sectional view in;

[0083] Figure 34Schematically shows a side view of a child carrier provided according to a fifth embodiment of the present invention, wherein the swing bracket assembly is in an initial position;

[0084] Figure 35 Schematically shows a side view of a child carrier according to a fifth embodiment of the present invention, wherein the swing bracket assembly swings forward;

[0085] Figure 36 A perspective view schematically shows a child carrier according to a fifth embodiment of the present invention, wherein the swing bracket assembly swings backward;

[0086] Figure 37 A perspective view schematically shows a main frame of a child carrier according to a fifth embodiment of the present invention;

[0087] Figure 38 Schematically shown Figure 37 KK sectional view in which the swing arm is locked from swinging;

[0088] Figure 39 Schematically shown Figure 37 KK sectional view in which the swing lock of the swing arm is released;

[0089] Figure 40 A schematic perspective exploded view of the connection between the support tube and the swing arm of the child carrier according to the fifth embodiment of the present invention is shown;

[0090] Figure 41 A perspective view schematically shows a fixing member of a child carrier provided according to a fifth embodiment of the present invention;

[0091] Figure 42 A perspective view schematically shows an abutment member of a child carrier according to a fifth embodiment of the present invention;

[0092] Figure 43 A schematic perspective view of a limiting member of a child carrier according to a fifth embodiment of the present invention is shown;

[0093] Figure 44 A partial perspective view schematically shows an abutment member, a limiting member, and a swing arm of a child carrier according to a fifth embodiment of the present invention;

[0094] Figure 45 A perspective view schematically illustrates an abutment member, a limiting member, and a swing arm of a child carrier according to a fifth embodiment of the present invention, wherein the limiting member is in a first position;

[0095] Figure 46 A perspective view schematically illustrates an abutment member, a limiting member, and a swing arm of a child carrier according to a fifth embodiment of the present invention, wherein the limiting member is in a second position;

[0096] Figure 47 Schematically shows a side view of a driving wheel of a child carrier provided according to a fifth embodiment of the present invention;

[0097] Figure 48 A perspective view schematically shows a driving wheel of a child carrier provided according to a fifth embodiment of the present invention;

[0098] Figure 49 A schematic perspective view of a pressing member of a child carrier according to a fifth embodiment of the present invention is shown;

[0099] Figure 50 Schematically shows a bottom perspective view of a seat of a child carrier provided according to a fifth embodiment of the present invention;

[0100] Figure 51 A perspective view schematically shows another embodiment of an abutment member of a child carrier according to a fifth embodiment of the present invention;

[0101] Figure 52 A perspective view schematically shows another embodiment of a limiting member of a child carrier according to a fifth embodiment of the present invention;

[0102] Figure 53 Schematically shown Figure 37 MM cross-sectional view in;

[0103] Figure 54 A partial cross-sectional view schematically shows the joint between the seat and the connector of a child carrier provided in accordance with a fifth embodiment of the present invention. DETAILED DESCRIPTION

[0104] First embodiment

[0105] Figures 1 to 13 The diagram schematically illustrates a child carrier according to a first embodiment of the present invention. In this first embodiment, the child carrier is described using a children's dining chair as an example, but the type of child carrier is not limited to a children's dining chair. For example, in some alternative embodiments, the child carrier may be a child stroller or other suitable product. Figures 1 to 4 The child carrier may include a main frame 1, a swing bracket assembly 2, and a seat 3. The main frame 1 is supported by the ground. The swing bracket assembly 2 is connected to the main frame 1 and can swing back and forth relative to the main frame 1. The seat 3 is pivotally connected to the main frame 1 via the swing bracket assembly 2 so as to be able to swing back and forth relative to the main frame 1.

[0106] It is understood that the main frame 1 can have different forms depending on the type of child carrier. For example, when the child carrier is a children's dining chair, the main frame 1 can be a high chair frame; when the child carrier is a child stroller, the main frame 1 can be a movable frame with rollers at the bottom. Figures 1 to 4 In this first embodiment, the main frame 1 is a high chair frame, which includes two front legs 101 spaced apart in the left-right direction, and two rear legs 102 spaced apart in the left-right direction. The lower ends of the two front legs 101 are connected by a front crossbar 1031, and the lower ends of the two rear legs 102 are connected by a rear crossbar 1032. The upper ends of the front legs 101 and the upper ends of the rear legs 102 located on the same side are connected by a folding member 104, which can control the folding or unfolding of the front legs 101 and the rear legs 102. Of course, the structure of the main frame 1 is not limited to this. For example, in some alternative embodiments, the front legs 101 and the rear legs 102 are fixedly connected and do not have a folded state.

[0107] A support tube 11 is provided on the upper portion of each front leg frame 101, and the support tube 11 is used to connect with the swing support assembly 2. Figure 1 and Figure 4 In this first embodiment, the support tube 11 protrudes upward relative to the upper end of the front leg 101, and the extension direction of the support tube 11 is consistent with the extension direction of the front leg 101. In some embodiments, the support tube 11 can be an integral structure with the front leg 101, or the support tube 11 can be sleeved inside the tube of the front leg 101. When the support tube 11 is sleeved inside the tube of the front leg 101, the support tube 11 can, for example, be telescopic relative to the front leg 101. A height adjustment structure can also be provided between the support tube 11 and the front leg 101. The height adjustment structure is used to lock the telescopic position of the support tube 11 relative to the front leg 101, so that the user can adjust the height of the seat 3 supported by the swing bracket assembly 2 as needed. The height adjustment structure can refer to relevant technologies, which is not the focus of the present invention and will not be described here. It should be noted that, although the support tube 11 is installed at the upper end of the front leg 101 in the first embodiment, in an alternative embodiment, the support tube 11 is not limited to being connected to the front leg 101. According to the variation of the structure of the main frame 1, the structure of the support tube 11 and the position in the main frame 1 can be changed accordingly, as long as it can be pivotally connected to the swing bracket assembly 2 and achieve the corresponding function.

[0108] It should be noted that, unless otherwise expressly specified or limited, directional terms such as "front," "rear," "left," and "right" in the embodiments of the present invention are based on the "front," "rear," "left," and "right" directions of a child seated in the child carrier. Arrows H and P schematically indicate the "front" and "rear" directions, and arrows L and R schematically indicate the "left" and "right" directions in the figures. These directional terms are used solely to clarify the description of the embodiments of the present invention and are not intended to unduly limit the scope of protection of the present invention.

[0109] Figure 7 Figure 2 shows an exemplary structure of a swing support assembly 2. The swing support assembly 2 can be made, for example, of a metal rod and includes a support frame 22 and swing arms 21 located on either side of the support frame 22. The support frame 22 can have a curved structure, for example, including a first support rod 221, a second support rod 222, a first crossbar 223, a second crossbar 224, and a third crossbar 225. The first support rod 221 and the second support rod 222 are positioned opposite each other. In some embodiments, the first support rod 221 and the second support rod 222 are spaced apart in the left-right direction and extend parallel to each other in the front-to-back direction. The first crossbar 223 is connected between the rear end of the first support rod 221 and the rear end of the second support rod 222. The second crossbar 224 is connected to the front end of the first support rod 221 and connected to the right swing arm 21. The third crossbar 225 is connected to the front end of the second support rod 222 and connected to the left swing arm 21. The upper end of each swing arm 21 is pivotally connected to the corresponding support tube 11 to enable forward and backward swinging. Of course, in alternative embodiments, the structure of the swing bracket assembly 2 can also have multiple implementations, as long as it has a swing arm 21 connected to the support tubes 11 on both sides and is capable of supporting the seat 3.

[0110] See also Figure 1 The seat 3 is supported by a support frame 22 and is limited in position in the left and right directions by two swing arms 21. When the swing arms 21 swing back and forth, the seat 3 swings therewith, so that the child carrier has a swing mode (also known as a rocking chair mode).

[0111] See also Figure 1 、 Figure 3 、 Figure 23 and 24In this first embodiment, an exemplary structure of a seat 3 is shown. The seat 3 includes a base 305, two guardrails 306, a backrest 307, and a dining tray 308 or a front armrest. The two guardrails 306 are located on the left and right sides of the base 305, the backrest 307 is mounted on the base 305 and located between the two guardrails 306, and the dining tray 308 or the front armrest is mounted on the two guardrails 306 and located in front of the backrest 307. In some embodiments, a seat portion 3071 may be further provided at the bottom of the backrest 307. The seat portion 3071 may be integrally formed with the backrest 307 and fixed above the base 305, thereby fixing the backrest 307 to the base 305. A downwardly extending footrest 309 may be provided in front of the base 305 to support the child's calves and feet. The upper end of the footrest 309 is pivotally connected to the seat portion 3071, for example, via a pivot 3091. Thus, when the backrest 307, seat portion 3071, and footrest 309 are removed from the base 305, the footrest 309 can be flipped toward the bottom surface of the seat portion 3071 to save space. Of course, the structure of the seat 3 is not limited to the above examples. For example, in some embodiments, the backrest 307 can be integrally formed with the base 305; or, the backrest 307 can be pivotally connected to the base 305, and the seat 3 can further be provided with a backrest adjustment and locking structure to achieve an adjustable tilt angle of the backrest 307; or, the footrest 309 can be directly connected to the base 305; or, in some embodiments, the seat 3 may not be provided with a footrest 309.

[0112] See also Figure 3 and Figure 23 The seat 3 has a mounting structure for matching the swing bracket assembly 2 described above. Specifically, Figure 23 As shown, the bottom surface of the base 305 is provided with a first positioning groove 31 and a second positioning groove 32, and the first support rod 221 and the second support rod 222 can be inserted into the first positioning groove 31 and the second positioning groove 32. In addition, the bottom surface of the base 305 is further provided with a positioning groove 331, a positioning groove 332 and a positioning groove 333, and the first cross bar 223, the second cross bar 224 and the third cross bar 225 can be inserted into the positioning groove 331, the positioning groove 332 and the positioning groove 333 respectively. Figure 3As shown, the outer side surfaces of the two guardrails 306 are respectively provided with positioning grooves 3060. The two swing arms 21 can be respectively inserted into the positioning grooves 3060 of the guardrail 306 on the same side. As a result, the swing bracket assembly 2 provides reliable support for the seat 3 in both the front-to-back direction and the left-to-right direction. In addition, a quick-release structure can be provided between the base 305 and the support frame 22 to conveniently lock or release the connection between the support frame 22 and the base 305. The quick-release structure can, for example, adopt the locking device 9 described in the third and fourth embodiments below. Of course, the implementation scheme of the quick-release structure is not limited to the examples below. It can be understood that the connection structure between the seat 3 and the swing bracket assembly 2 can also have a variety of implementation methods, as long as the swing bracket assembly 2 can reliably support the seat 3.

[0113] See also Figure 6 、 Figure 7 、 Figure 9 、 Figures 11 to 13 A swing limiting mechanism 4 is provided between the swing arm 21 and the support tube 11 on the same side. The swing limiting mechanism 4 is used to limit the swing angle of the swing arm 21, thereby controlling the swing amplitude of the seat 3, so as to ensure both safety and comfort when the seat 3 is in the swing mode. In some embodiments, the swing angle of the swing arm 21 can be within 30 to 40 degrees. Taking the swing angle of the swing arm 21 within 40 degrees as an example, this means that the maximum angle α that the swing arm 21 can swing backward relative to its starting position is 20 degrees ( Figure 11 ), and the maximum forward swing angle β is 20 degrees ( Figure 12 ).like Figure 13 As shown, the starting position of the swing arm 21 is a position where the swing arm 21 is substantially parallel to the center line of the support tube 11 .

[0114] See also Figure 6 、 Figure 7 、 Figures 9 to 13 , shows an exemplary structure of the swing limiting mechanism 4 between the left swing arm 21 and the support tube 11. In this first embodiment, the main frame 1 and support frame 22 of the child carrier are substantially bilaterally symmetrical. The swing limiting mechanism 4 between the right swing arm 21 and the support tube 11 is symmetrical with the swing limiting mechanism 4 on the left, and will not be described separately here. Of course, in some embodiments, the main frame 1 and support frame 22 of the child carrier may not be completely bilaterally symmetrical. In this case, the swing limiting mechanism 4 may be provided only between the swing arm 21 and the support tube 11 on one side.

[0115] See also Figure 6 、 Figure 7 and Figure 9The support tube 11 of the main frame 1 is provided with a first through hole 110 which passes through the wall of the support tube 11 transversely, and the first through hole 110 is close to the upper end of the support tube 11. The swing limiting mechanism 4 includes a fixing member 41 which can be fitted into the support tube 11 and thus fixed to the main frame 1. For example, Figure 6 As shown, the upper end of the fixing member 41 can be provided with a limiting flange 4109, which is engaged with the upper end of the support tube 11 to secure the fixing member 41 to the upper end of the support tube 11. The fixing member 41 is provided with a second through hole 410 and a limiting groove 411. The second through hole 410 is aligned with the first through hole 110, and the limiting groove 411 extends longitudinally along the fixing member 41 and communicates with the second through hole 410. It will be appreciated that in alternative embodiments, the fixing member 41 can be secured to the main frame 1 by other means.

[0116] A pivot 211 is provided at the upper end of the swing arm 21, and the pivot 211 is connected to the swing arm 21 in a non-rotatable manner. The pivot 211 is inserted into the first through hole 110 and the second through hole 410, and the axial direction of the pivot 211 is substantially perpendicular to the extension direction of the limit slot 411. When the swing arm 21 is subjected to a swinging force, the swing arm 21 and the pivot 211 swing together around the axis of the pivot 211. In this first embodiment, the swing arm 21 and the pivot 211 are integrally formed. In some alternative embodiments, the pivot 211 and the swing arm 21 can be integrated, for example, by welding, or the pivot 211 and the swing arm 21 can be a split structure, and the two are non-rotatably connected, for example, by engaging a flat head connecting portion and a flat hole.

[0117] See also Figures 11 to 13 The sidewalls of the limiting groove 411 include a first sidewall 401 and a second sidewall 402 that are parallel to each other. The first sidewall 401 and the second sidewall 402 are located on the front and rear sides of the pivot 211. A first limiting surface 4111 and a second limiting surface 4112 are formed on each of the first sidewall 401 and the second sidewall 402. The first limiting surface 4111 on the first sidewall 401 is located above the second limiting surface 4112, and the first limiting surface 4111 on the second sidewall 402 is located below the second limiting surface 4112.

[0118] See also Figure 6 as well as Figures 10 to 13The swing limiting mechanism 4 further includes a contact member 42, which is non-rotatably connected to the pivot 211 and is located between the first limiting surface 4111 and the second limiting surface 4112 of the first side wall 401 and the second side wall 402. The contact member 42 limits the swing angle of the swing arm 21 by abutting against the first limiting surface 4111 and the second limiting surface 4112. In this first embodiment, the contact member 42 and the pivot 211 are separate structures. After the contact member 42 is inserted into the limiting groove 411, it is non-rotatably connected to the pivot 211. The contact member 42 is generally a diamond-shaped piece, including a first pair of parallel surfaces 421 and a second pair of parallel surfaces 422. See Figure 11 When the first pair of parallel surfaces 421 swings to abut against the first limiting surface 4111, the swing arm 21 is restricted from continuing to swing in the first direction T1, and, see Figure 12 When the second pair of parallel surfaces 422 swings to abut against the second limiting surface 4112, the swing arm 21 is restricted from swinging in the second direction T2. ​​The first direction T1 and the second direction T2 are opposite. In this first embodiment, the first direction T1 is more specifically the rearward direction, and the second direction T2 is more specifically the forward direction.

[0119] It should be noted that, although the first side wall 401 and the second side wall 402 are parallel to each other and the abutment 42 is generally diamond-shaped in the first embodiment, in other embodiments, the first side wall 401, the second side wall 402 and the abutment 42 may have other implementations and are not limited to the above examples. The first side wall 401 and the second side wall 402 only need to be able to cooperate with the abutment 42 to limit the swing angle of the swing arm 21 to a preset angle.

[0120] Figure 6 、 Figure 7 and Figure 10 An exemplary connection method between the pivot 211 and the abutment 42 is shown. A first flat head 2111 is provided at the end of the pivot 211, and the abutment 42 has a first flat hole 423 for engaging with the first flat head 2111. The portion of the first flat head 2111 located in the limiting groove 411 is passed through the first flat hole 423, so that the abutment 42 and the pivot 211 are connected in a non-rotatable manner. In some embodiments, the first flat head 2111 and the first flat hole 423 can have a rectangular, trapezoidal, elliptical, or quasi-rectangular cross-sectional shape. Figure 6 and Figure 7 During installation, first insert the abutment 42 into the limiting groove 411 from the top notch 41101 of the limiting groove 411, then pass the first flat head 2111 through the first through hole 110 and the second through hole 410 on one side of the limiting groove 411, align the first flat hole 423 of the abutment 42 with the first flat head 2111, and then pass the first flat head 2111 through the first flat hole 423. Figure 13It can be seen that in some embodiments, the limiting groove 411 has a closed groove bottom 41102, which can prevent the abutment member 42 from accidentally sliding from the bottom of the limiting groove 411 into the support tube 11.

[0121] See also Figure 6 、 Figure 7 and 10 The diameter of the pivot 211 is smaller than the diameters of the first through-hole 110 and the second through-hole 410. A first sleeve 201 can be mounted on the outer circumference of the pivot 211. The first sleeve 201 is located on one side of the retaining groove 411 and is mounted at least in the second through-hole 410 of the fixing member 41. The pivot 211 is supported by the first sleeve 201 and can rotate relative to the first sleeve 201. The first sleeve 201 can be made of, for example, a wear-resistant material with a low coefficient of friction, such as a plastic material, to reduce the swing resistance of the swing arm 21. Of course, in some alternative embodiments, the first sleeve 201 may not be provided, and the pivot 211 may be directly supported by, for example, the second through-hole 410.

[0122] See also Figure 6 The wall of the second through hole 410 may be provided with a step 4108, which is used to limit the installation depth of the first sleeve 201 in the second through hole 410 to prevent the first sleeve 201 from pressing against the abutment member 42. In some embodiments, the first sleeve 201 may be tightly fitted with the second through hole 410 to limit the axial movement and circumferential rotation of the first sleeve 201 relative to the second through hole 410. Figure 7 and Figure 10 In some embodiments, an axial guide groove 2011 may be provided on the outer circumference of the first sleeve 201, and an axial guide rib 4101 may be provided on the wall of the second through hole 410. The extension direction of the axial guide groove 2011 and the axial guide rib 4101 is parallel to the axis of the pivot 211. The axial guide groove 2011 and the axial guide rib 4101 are engaged together to move relative to each other in the axial direction during assembly, so as to limit the circumferential rotation of the first sleeve 201 relative to the second through hole 410. It will be understood that in some alternative embodiments, the positions of the axial guide groove 2011 and the axial guide rib 4101 on the outer circumference of the first sleeve 201 and the wall of the second through hole 410 may be interchanged.

[0123] Continue to see Figure 6 、 Figure 7 、 Figure 9 and Figure 10A first step 2102 is formed at the base of the first flat head portion 2111. The first step 2102 can limit the axial movement of the abutment member 42 relative to the pivot 211 from one side. A first limiting structure 5 can be provided on the first flat head portion 2111. The first limiting structure 5 limits the axial movement of the abutment member 42 relative to the pivot 211 from the other side, thereby preventing the abutment member 42 from moving on the first flat head portion 2111 and further preventing the abutment member 42 from separating from the first flat head portion 2111.

[0124] Continue to see Figure 6 Figure 7 、 Figure 9 and Figure 10 , this first embodiment also shows an exemplary structure of the first limiting structure 5. The first limiting structure 5 includes a spring clip 51 and a first positioning sleeve 52 located on the other side of the limiting groove 411. The first positioning sleeve 52 is sleeved on the first flat head 2111 and is located in the second through hole 410. The first positioning sleeve 52 has a second flat hole 521 at its axial center, and the second flat hole 521 is used to engage with the first flat head 2111, so that no relative rotation occurs between the first positioning sleeve 52 and the first flat head 2111. The first positioning sleeve 52 also has a radial through groove 522 for accommodating the spring clip 51, and the radial through groove 522 intersects the second flat hole 521 at right angles. The first flat head portion 2111 is provided with a first positioning recess 2101. The spring clip 51 is inserted into the radial through groove 522 and engages with the first positioning recess 2101, thereby fixing the axial position of the first positioning sleeve 52 on the first flat head portion 2111 and sandwiching the abutment 42 between the first step 2102 and the first positioning sleeve 52. Figure 6 In some embodiments, the outer peripheral wall of the first positioning sleeve 52 contacts the hole wall of the second through hole 410 , so that the first positioning sleeve 52 can form auxiliary support for the first flat head 2111 .

[0125] See also Figure 7 In some embodiments, one or more positioning holes 424 are provided on the end surface of the abutment 42 facing the first positioning sleeve 52. The positioning holes 424 can be blind holes or through holes. One or more positioning bosses 523 are provided on the end surface of the first positioning sleeve 52 facing the abutment 42, and the positioning holes 424 and the positioning bosses 523 are engaged. Since the first positioning sleeve 52 and the first flat head 2111 are connected in a non-rotatable manner, the engagement of the positioning holes 424 and the positioning bosses 523 further ensures the non-rotatable connection relationship between the abutment 42 and the first flat head 2111. In some alternative embodiments, the positions of the positioning holes 424 and the positioning bosses 523 on the abutment 42 and the first positioning sleeve 52 can be interchanged.

[0126] See also Figure 7The child carrier can also be equipped with a first swing locking mechanism 6, which is used to lock the swing arm 21 from swinging, so that the seat 3 cannot swing, that is, switch from the swing mode to the fixed mode. For a children's dining chair, when the child is dining, the seat 3 needs to switch from the swing mode to the fixed mode. The first swing locking mechanism 6 can be implemented in various ways. Figure 3 At least one lock hole 30 may be provided on the side of the seat 3 (more specifically, the guardrail 306 of the seat 3), see Figure 5 , the first swing locking mechanism 6 can be installed on the main frame 1 and has an axially retractable lock pin 62, which is parallel to the pivot 211. When the control lock pin 62 is inserted into the lock hole 30, the swing of the swing arm 21 is locked, and the seat 3 switches to the fixed mode. It can be understood that when the seat 3 is equipped with multiple lock holes 30, the inclination of the seat 3 in the fixed mode can be changed by inserting the lock pin 62 into different lock holes 30. When the seat 3 needs to be switched to the swing mode, the control lock pin 62 is withdrawn from the corresponding lock hole 30, and the lock pin 62 no longer interferes with the swing of the swing arm 21, and the swing arm 21 can drive the seat 3 to swing within the angle range limited by the swing limit mechanism 4.

[0127] See also Figure 5 、 Figures 7 to 9 ,as well as Figures 11 to 13 In this first embodiment, an exemplary structure of the first swing locking mechanism 6 and an exemplary mounting structure of the first swing locking mechanism 6 and the main frame 1 are shown. To facilitate mounting of the first swing locking mechanism 6, the main frame 1 may further include a first mounting housing 15. The first swing locking mechanism 6 is mounted in the first mounting housing 15. The first mounting housing 15 is mounted on the main frame 1. More specifically, the first mounting housing 15 is mounted on the support tube 11.

[0128] See also Figure 7 and Figure 9 The first mounting housing 15 can be formed by connecting a first housing portion 151 and a second housing portion 152 , and the first swing locking mechanism 6 is installed inside the first mounting housing 15 .

[0129] The second housing portion 152 is further away from the longitudinal center plane (or the bilaterally symmetrical center plane) of the child carrier than the first housing portion 151. The second housing portion 152 has a first sleeve portion 150. The first sleeve portion 150 can be mounted on the end of the support tube 11. In some embodiments, Figure 9 As shown, the support tube 11 may be provided with a hole 1101, and the first sleeve portion 150 may be provided with a hole 1501. Fasteners such as screws may be sequentially passed through the hole 1501 and the hole 1101 to fix the second housing portion 152 to the support tube 11. Figure 7An operating button 154 may be mounted on the second housing portion 152. The first end of the operating button 154 is hinged to the second housing portion 152 via a pin 1541. The second end of the operating button 154 may be provided with a mounting hole 1542 for connecting the end of a cable (the cable is not shown). A return spring 153 is also disposed between the operating button 154 and the second housing portion 152. When subjected to force, the operating button 154 moves upward about the pin 1541 and compresses the return spring 153. The second end of the operating button 154 drives the cable upward. The upward movement of the cable can achieve a corresponding function. For example, in some embodiments, the upward movement of the cable can release the locking relationship between the support tube 11 and the front leg frame 101, allowing the support tube 11 to extend and retract relative to the front leg frame 101 to adjust the height of the seat 3. Because the technical features and functions related to the operating button 154 and the cable are not the focus of this utility model, they will not be described in detail here.

[0130] The first housing portion 151 can be fixed to the second housing portion 152 by screws (not shown). The first housing portion 151 can be provided with a third through hole 1503, and the locking pin 62 extends outward from the third through hole 1503. Figure 7 and Figure 9 The first swing locking mechanism 6 may further include a first release member 61 and a first elastic element 63. Figure 5 The first elastic element 63 exerts an elastic force on the lock pin 62 inside the first mounting housing 15, forcing the lock pin 62 to extend outward to be inserted into the corresponding lock hole 30. The first release member 61 is operably connected to the lock pin 62 to push the lock pin 62 inward to retract, thereby allowing the lock pin 62 to exit the corresponding lock hole 30.

[0131] In some embodiments, the first release member 61 can move forward and backward relative to the first mounting housing 15 to a locked position or a released position, and the first housing portion 151 and / or the second housing portion 152 can be provided with a structure 1521 to guide the movement of the first release member 61. Figure 8 、 Figure 11 and Figure 12 When the first release member 61 is in the release position, the first release member 61 drives the lock pin 62 to exit the lock hole 30, and the swing arm 21 can swing back and forth. Figure 8 and Figure 13 When the first release member 61 is in the locking position, the first elastic element 63 drives the locking pin 62 to extend outward to be inserted into the locking hole 30 .

[0132] See also Figure 7 、 Figure 8 、 Figures 11 to 13In some embodiments, a first annular flange 620 may be provided at the middle portion of the locking pin 62. The first annular flange 620 divides the locking pin 62 into a first portion 621 and a second portion 622. The first portion 621 is configured to extend outward to be inserted into the locking hole 30. The first elastic element 63 is sleeved on the second portion 622. The second housing portion 152 may be provided with a mounting hole 1520. The second portion 622 is axially movably disposed in the mounting hole 1520. Figure 8 The first release member 61 has a first elongated hole 611, which can be either a straight hole or an arcuate hole. A first stopper 612 is formed on the wall of the first elongated hole 611 and extends obliquely. A first annular flange 620 is sandwiched between the first stopper 612 and the first elastic element 63. When the first release member 61 moves toward the released position, the first stopper 612 pushes the first annular flange 620, driving the locking pin 62 axially, causing it to retract inward until it exits the locking hole 30. When the first release member 61 moves toward the locked position, the first stopper 612 clears the axial space, allowing the first elastic element 63 to drive the locking pin 62 outward, allowing it to be inserted into the locking hole 30. Of course, there are many other structures for controlling the axial extension and retraction of the locking pin 62 via the first release member 61, not limited to the above example.

[0133] See also Figure 8 、 Figures 11 to 13 To facilitate operation of the first release member 61, the first release member 61 further includes a first shifting block 613 that protrudes outward from the first mounting housing 15. The first shifting block 613 is easily operated to change the front-to-back position of the first release member 61. The first mounting housing 15 is correspondingly provided with a first opening 1505 for movement of the first shifting block 613, which also limits the travel of the first shifting block 613.

[0134] Depend on Figures 11 to 13 As can be seen, in some embodiments, the upper end of the support tube 11 passes through the first sleeve portion 150 of the first mounting shell 15 and extends into the interior of the first mounting shell 15. The fixing member 41 located at the upper end of the support tube 11 is also correspondingly accommodated in the interior of the first mounting shell 15. The first mounting shell 15 is provided with a second opening 1506 for the swing arm 21 to pass through (see FIG. Figure 9 ), the second opening 1506 also helps to limit the swing angle of the swing arm 21.

[0135] In this embodiment, a swing mechanism is also provided, which includes the above-mentioned fixing member 41, the swing arm 21 and the abutment member 42. As described in this embodiment, the fixing member 41 is provided with a first limiting surface 4111 and a second limiting surface 4112. The swing arm 21 has a pivot 211, which can pivot relative to the fixing member 41. The abutment member 42 is connected to the pivot 211 and is located between the first limiting surface 4111 and the second limiting surface 4112. When the swing arm 21 rotates, the abutment member 42 rotates with the swing arm 21, and when reaching the extreme position of the swing, it abuts against the first limiting surface 4111 and the second limiting surface 4112 respectively, thereby limiting the swing angle range of the swing arm 21.

[0136] In some embodiments, as described above, the fixing member 41 is provided with a limiting slot 411, the extending direction of which is perpendicular to the axial direction of the pivot 211. A first limiting surface 4111 and a second limiting surface 4112 can be formed on two mutually parallel first side walls 401 and second side walls 402 of the limiting slot 411. The abutment member 42 can be attached to the swing arm 21 and include a first pair of parallel surfaces 421 and a second pair of parallel surfaces 422 that are parallel to each other. The abutment member 42 limits the swing angle range of the swing arm 21 by abutting the first pair of parallel surfaces 421 and the second pair of parallel surfaces 422 at different positions on the first side wall 401 and the second side wall 402.

[0137] The swing mechanism can be applied to any suitable product and is used to limit the swing angle range of the swing arm 21.

[0138] Second embodiment

[0139] Figures 14 to 21 The following diagram schematically illustrates a partial structure of a child carrier according to the second embodiment of the present invention. Similar to the first embodiment, the child carrier in this second embodiment is also described using a children's dining chair as an example. Of course, the type of child carrier is not limited to a children's dining chair. The child carrier includes a main frame 1, a swing bracket assembly 2, and a seat. It should be noted that: Figures 14 to 21 The structure of the seat is not shown in the figure. If there is no conflict, the structure of the seat can refer to the structure of the seat 3 in the first embodiment mentioned above.

[0140] See also Figure 14The structure of the main frame 1 in this second embodiment is similar to that of the main frame 1 in the first embodiment described above. The main frame 1 includes two front legs 101, two rear legs 102, a front crossbar (not shown) connecting the two front legs 101, a rear crossbar (not shown) connecting the two rear legs 102, a folding member 104 connecting the front legs 101 and the rear legs 102 on the same side, and support tubes 11 provided on the upper portions of each front leg. The interrelationships between these components can be found in the description of the first embodiment described above and will not be repeated here.

[0141] See also Figure 16 , the structure of the swing bracket assembly 2 in this second embodiment is similar to the structure of the swing bracket assembly 2 in the above-mentioned first embodiment. The swing bracket assembly 2 includes a support frame 22 and swing arms 21 located on the left and right sides of the support frame 22. The support frame 22 can have a bent structure, for example, including a first support rod 221, a second support rod 222, a first cross bar 223, a second cross bar 224 and a third cross bar 225. The relationship between these components and the matching relationship between the swing bracket assembly 2 and the seat 3 can be referred to the description in the above-mentioned first embodiment and will not be repeated here. The upper end of each swing arm 21 is pivotally connected to the corresponding support tube 11, so that the swing bracket assembly 2 can swing back and forth to drive the seat 3 to swing back and forth.

[0142] See also Figures 15 to 17 ,as well as Figure 20 and Figure 21 In the child carrier of this second embodiment, a swing limiting mechanism 4 is provided between the swing arm 21 and the support tube 11 on the same side. This swing limiting mechanism 4 functions similarly to the swing limiting mechanism 4 of the first embodiment: it limits the swing angle of the swing arm 21, thereby controlling the swing amplitude of the seat 3, ensuring both safety and comfort when the seat 3 is in swing mode. For example, the swing limiting mechanism 4 limits the swing angle of the swing arm 21 to within 30 to 40 degrees. This second embodiment illustrates an exemplary structure of the swing limiting mechanism 4 between the left swing arm 21 and the support tube 11. In this second embodiment, the main frame 1 and support frame 22 of the child carrier are substantially bilaterally symmetrical. The swing limiting mechanism 4 between the right swing arm 21 and the support tube 11 is symmetrical to the left swing limiting mechanism 4 and will not be described separately here. Of course, in some embodiments, the main frame 1 and support frame 22 of the child carrier may not be completely bilaterally symmetrical. In this case, the swing limiting mechanism 4 may be provided only between the swing arm 21 and the support tube 11 on one side.

[0143] See also Figures 15 to 17The support tube 11 of the main frame 1 is provided with a first through hole 110 that passes through the wall of the support tube 11 transversely, and the first through hole 110 is close to the upper end of the support tube 11. The swing limiting mechanism 4 includes a fixing member 41, which can be inserted into the support tube 11 and thus fixed to the main frame 1. For example, a limiting flange 4109 can be provided at the upper end of the fixing member 41, and the limiting flange 4109 is clamped at the upper end of the support tube to fix the fixing member 41 to the upper end of the support tube 41. The fixing member 41 is provided with a second through hole 410 and a limiting groove 411. The second through hole 410 and the first through hole 110 are aligned with each other, and the limiting groove 411 extends along the longitudinal direction of the fixing member 41 and communicates with the second through hole 410. It can be understood that in some alternative embodiments, the fixing member 41 can be fixed to the main frame 1 in other ways.

[0144] See also Figure 16 and Figure 17 , a pivot 211 is provided at the upper end of the swing arm 21, and the pivot 211 is connected to the swing arm 21 in a non-rotatable manner. The pivot 211 is inserted into the first through hole 110 and the second through hole 410, and the axial direction of the pivot 211 is substantially perpendicular to the extension direction of the limit slot 411. When the swing arm 21 is subjected to a swinging force, the swing arm 21 and the pivot 211 swing together around the axis of the pivot 211. In this second embodiment, the pivot 211 and the swing arm 21 are a split structure, and the end face of the second end of the pivot 211 is provided with a flat head connecting portion 2113 extending outward, and the upper end of the swing arm 21 is provided with a connecting piece 26, and the connecting piece 26 is provided with a third flat hole 260 for engaging with the flat head connecting portion 2113. The flat head connecting portion 2113 and the third flat hole 260 can have a rectangular, trapezoidal, elliptical, rectangular or other cross-sectional shape.

[0145] See also Figure 16 、 Figure 20 and Figure 21 A limiting member 43 is provided in the limiting groove 411. More specifically, the limiting member 43 is, for example, a plate member, which is inserted into the limiting groove 411. The limiting member 43 has an opening 430 for the pivot 211 to pass through, and a first limiting surface 4111 and a second limiting surface 4112 are formed on the hole wall of the opening 430. More specifically, the opening 430 may include a first hole portion 4301, which is, for example, a fan-shaped hole portion. The first hole portion 4301 includes a first wall 43011 and a second wall 43012, and the first wall 43011 and the second wall 43012 are located on the front and rear sides of the pivot 211. The first limiting surface 4111 and the second limiting surface 4112 are formed on the above-mentioned first wall 43011 and the second wall 43012.

[0146] See also Figure 20In this second embodiment, the first hole portion 4301 is formed by connecting two sub-sector-shaped holes (not numbered in the figure) in an upper and lower manner. The first wall 43011 of the first hole portion 4301 includes the front wall of the upper sub-sector-shaped hole and the front wall of the lower sub-sector-shaped hole. The second wall 43012 of the first hole portion 4301 includes the rear wall of the upper sub-sector-shaped hole and the rear wall of the lower sub-sector-shaped hole. The first limiting surface 4111 may include the front wall of the upper sub-sector-shaped hole and the rear wall of the lower sub-sector-shaped hole, and the second limiting surface 4112 may include the rear wall of the upper sub-sector-shaped hole and the front wall of the lower sub-sector-shaped hole.

[0147] Continue to see Figure 16 、 Figure 20 and Figure 21 The swing limiting mechanism 4 further includes an abutment member 42, which is non-rotatably connected to the pivot 211 and is located between a first limiting surface 4111 and a second limiting surface 4112. The abutment member 42 limits the swing angle of the swing arm 21 by abutting against the first limiting surface 4111 and the second limiting surface 4112. In this second embodiment, the abutment member 42 is integrally formed with the pivot 211. More specifically, the abutment member 42 is a second flat head portion formed on the pivot 211. The second flat head portion is adjacent to the first end of the pivot 211 and includes a first flat surface 425 and a second flat surface 426 that are parallel to each other. The first end of the pivot 211 is the end of the pivot 211 that is away from the connecting piece 26.

[0148] See also Figure 20 During the swinging process of the swing arm 21, when the upper part of the first plane 425 and the lower part of the second plane 426 simultaneously abut against the first limiting surface 4111, the swing arm 21 is restricted from continuing to swing in the first direction T1, and when the lower part of the first plane 425 and the upper part of the second plane 426 simultaneously abut against the second limiting surface 4112, the swing arm 21 is restricted from continuing to swing in the second direction T2.

[0149] It should be noted that although the opening 430 in the second embodiment includes a first hole portion 4301 formed by connecting and abutting two sub-sector-shaped holes, and the abutment member 42 is a second flat head formed on the pivot 211, in other embodiments, the opening 430 and the abutment member 42 may have other embodiments and are not limited to the above examples. The hole wall of the opening 430 only needs to be able to limit the swing angle of the swing arm 21 to a predetermined angle. For example, in some embodiments, the first hole portion 4301 of the opening 430 may include only one sub-sector-shaped hole, and the front and rear walls of the sub-sector-shaped hole respectively form the first limiting surface 4111 and the second limiting surface 4112.

[0150] See also Figures 15 to 17, the diameter of the pivot 211 is smaller than the diameter of the first through hole 110 and the second through hole 410, and the second sleeve 202 can be mounted on the outer periphery of the pivot 211. The second sleeve 202 is located on one side of the limiting groove 411 and is at least mounted in the second through hole 410 of the fixing member 4. The pivot 211 is supported by the second sleeve 202 and can rotate relative to the second sleeve 202. The second sleeve 202 can be made of, for example, a wear-resistant material with a low friction coefficient, such as a plastic material, to reduce the swing resistance of the swing arm 21. In some embodiments, the second sleeve 202 can be tightly fitted with the second through hole 410 to limit the axial movement and circumferential rotation of the second sleeve 202 relative to the second through hole 410. Of course, in some alternative embodiments, the second sleeve 202 may not be provided, and the pivot 211 may be directly supported by the second through hole 410, for example.

[0151] Continue to see Figures 15 to 17 The pivot 211 can be provided with a second limiting structure 7, which is used to prevent the connection piece 26, the pivot 211 and the limiting member 43 from being separated. The figure shows an exemplary connection structure of the pivot 211 and the second limiting structure 7. Specifically, the pivot 211 has a central hole 2110 ( Figure 16 ), a second step 2103 is formed at the root of the second flat head ( Figure 17 ), a third step 2105 is formed at the root of the flat head connecting portion 2113 ( Figure 16 The second limiting structure 7 includes a bolt 71 and a nut 72. The tail portion 711 of the bolt 71 passes through the center hole 2110 from the second end of the pivot 211 (the end of the flat head connection portion 2113), then passes through the center hole 2110 from the first end of the pivot 211 and is threadedly engaged with the nut 72. The nut 72 is located on the other side of the limiting groove 411 and in the second through hole 410. The connecting piece 26 is sandwiched between the third step 2105 and the head 712 of the bolt 71. The limiting member 43 is sandwiched between the second step 2103 and the nut 72. The second sleeve 202 is located between the connecting piece 26 and the limiting member 43.

[0152] Continue to see Figures 15 to 17 The pivot 211 may further include a prismatic column 2115 extending from the end surface of the second flat head, and the nut 72 is provided with a second positioning recess 720 that matches the prismatic column 2115. The engagement between the prismatic column 2115 and the second positioning recess 720 prevents the nut 72 from rotating relative to the pivot 211, thereby facilitating the screwing of the bolt 71 into or out of the nut 72. In some embodiments, the outer peripheral wall of the nut 72 may contact the wall of the second through hole 410 to provide auxiliary support for the pivot 211.

[0153] In some embodiments, the child carrier may be equipped with the first swing locking mechanism 6 in the first embodiment described above, which locks the swing of the swing arm 21 so that the seat 3 cannot swing and is in a fixed mode.

[0154] This second embodiment provides another implementation method for locking the swing of the swing arm 21. Figure 20 and Figure 21 , the limiting groove 411 has a groove opening 41101 and a groove bottom 41102, the limiting member 43 is inserted into the limiting groove 411 through the groove opening 41101, the limiting member 43 can move longitudinally in the limiting groove 411 to adjust its own position, and the limiting groove 411 has a closed groove bottom 41102 to prevent the limiting member 43 from accidentally sliding from the bottom of the limiting groove 41 into the support tube 11. The opening 430 of the limiting member 43 also includes a second hole portion 4302 connected to the first hole portion 4301. The second hole portion 4302 is, for example, a straight hole portion, and the straight hole portion includes, for example, two hole walls that are opposite and parallel to each other. The second hole portion 4302 is below the first hole portion 4301 and closer to the groove bottom 41102, and the first hole portion 4301 is close to the groove opening 41101. As Figure 21 As shown, by moving the limiting member 43 toward the notch 41101, at least a portion of the second flat head portion is inserted from the first hole portion 4301 into the second hole portion 4302, and the first flat surface 425 and the second flat surface 426 of the second flat head portion abut against the two side walls of the second hole portion 4302, that is, the second flat head portion is engaged with the second hole portion 4302, thereby limiting the swing of the swing arm 21. Figure 21 In some embodiments, two limiting portions 4307 are formed at the junction of the two sub-fan-shaped holes. By properly setting the depth of the second hole portion 4302, when the second flat head portion is engaged with the second hole portion 4302, a portion of the second flat head portion is sandwiched between the two limiting portions 4307, and the two limiting portions 4307 also have a limiting effect on the second flat head portion. Figure 20 As shown, by moving the limiting member 43 toward the groove bottom 41102 until the second flat head portion is completely located in the first hole portion 4301 , the swing arm 21 can swing back and forth.

[0155] It can be understood that in some alternative embodiments, the upper and lower positions of the second hole portion 4302 and the first hole portion 4301 can be interchanged. In this case, when the limit member 43 is moved toward the slot 41101, the second flat head portion is completely in the first hole portion 4301, and the swing arm 21 can swing back and forth. Conversely, when the limit member 43 is moved toward the slot bottom 41102, at least a portion of the second flat head portion is inserted from the first hole portion 4301 into the second hole portion 4302, and the swing of the swing arm 21 is locked.

[0156] Continue to see Figure 20 and Figure 21In the second embodiment, a second elastic element 45 is installed in the limiting groove 411. The second elastic element 45 is clamped between the limiting member 43 and the groove bottom 41102 and is used to apply an upward force to the limiting member 43 so that the limiting member 43 moves toward the groove 41101. To facilitate the positioning of the second elastic element 45, the limiting groove 411 is formed with a cylindrical guide portion 4115. In addition, the limiting member 43 can be provided with a receiving recess 4309, and the upper end of the second elastic element 45 is located in the receiving recess 4309. When a pressing force is applied to the limiting member 43, the limiting member 43 can overcome the elastic force of the second elastic element 45 and move toward the groove bottom 41102. Thus, by moving the limiting member 43 up and down in the limiting groove 411, the first hole portion 4301 and the second hole portion 4302 are selectively matched with the second flat head portion. As can be seen from the above, when the second flat head portion is engaged with the first hole portion 4301, the swing arm 21 can swing back and forth. When the second flat head portion is at least partially engaged with the second hole portion 4302, the swing of the swing arm 21 is locked.

[0157] See also Figures 16 to 21 In order to facilitate the application of pressure toward the groove bottom 41102 on the limit member 43, the second embodiment also includes a second swing locking mechanism 8, which is operably connected to the limit member 43 to apply the above-mentioned pressure toward the groove bottom 41102 to the limit member 43, so that the limit member 43 overcomes the action of the second elastic element 45 and moves toward the groove bottom 41102.

[0158] See also Figures 15 to 21 This second embodiment illustrates an exemplary structure of the second swing locking mechanism 8 and an exemplary mounting structure of the second swing locking mechanism 8 to the main frame 1. To facilitate mounting of the second swing locking mechanism 8, the child carrier may further include a second mounting housing 16. The second swing locking mechanism 8 is mounted within the second mounting housing 16. The second mounting housing 16 is mounted on the main frame 1, more specifically, on the support tube 11.

[0159] See also Figure 15 and Figure 16 The second mounting housing 16 can be formed by docking a third housing portion 161 and a fourth housing portion 162 , and the second swing locking mechanism 8 is mounted inside the second mounting housing 16 .

[0160] The fourth housing portion 162 is further away from the longitudinal center plane (or the bilaterally symmetrical center plane) of the child carrier than the third housing portion 161. The fourth housing portion 162 has a second sleeve portion 160 that can be sleeved onto the end of the support tube 11. Figure 17In some embodiments, the support tube 11 may be provided with a hole 1101, and the second sleeve portion 160 may be provided with a hole 1601. Fasteners such as screws may be sequentially passed through the hole 1601 and the hole 1101 to fix the fourth housing portion 162 to the support tube 11. Figure 14 and Figure 16 An operating button 164 may be mounted on the fourth housing portion 162. The first end of the operating button 164 is hinged to the fourth housing portion 162 via a pin 1641. The second end of the operating button 164 may be provided with a mounting hole 1642 for connecting the end of a cable (the cable is not shown). A return spring 163 is also disposed between the operating button 164 and the fourth housing portion 162. When subjected to force, the operating button 164 moves upward about the pin 1641 and compresses the return spring 163. The second end of the operating button 164 drives the cable upward. The upward movement of the cable can achieve a corresponding function. For example, in some embodiments, the upward movement of the cable can release the locking relationship between the support tube 11 and the front leg frame 101, allowing the support tube 11 to extend and retract relative to the front leg frame 101 to adjust the height of the seat 3. Because the technical features and functions related to the operating button 164 and the cable are not the focus of this utility model, they will not be described in detail here.

[0161] The third housing portion 161 can be fixed to the fourth housing portion 162 by screws (not shown). Figure 16 as well as Figures 18 to 21 The top of the limiter 43 near the notch 41101 is provided with a snap-fit ​​portion 431, which is, for example, a concave portion. The second swing lock mechanism 8 includes a second release member 81, a first linking member 82, and a snap-fit ​​member 83. The snap-fit ​​member 83 has a central hole 830. The interior of the second mounting housing 16 is provided with a rotating shaft 169 ( Figure 16 ), the engaging member 83 is mounted on the rotating shaft 169 through the center hole 830, and the rotating shaft 169 is parallel to the pivot 211. The outer periphery of the engaging member 83 is provided with a connecting ear 831, a locking protrusion 832, and an escape portion 833. The first linking member 82 is connected between the connecting ear 831 and the second release member 81. The second release member 81 drives the engaging member 83 to rotate through the first linking member 82, causing the locking protrusion 832 and the escape portion 833 to rotate accordingly. Figure 20 When the engaging protrusion 832 rotates to a position where it contacts the engaging portion 431, the limiting member 43 moves toward the groove bottom 41102, and the second flat head portion cooperates with the first hole portion 4301, so that the swing arm 21 can swing back and forth. Figure 21 When the avoidance portion 833 rotates to a position abutting against the top of the limit member 43, under the action of the second elastic element 45, the limit member 43 moves toward the slot 41101, the second flat head portion cooperates with the second hole portion 4302, and the swing of the swing arm 21 is locked.

[0162] In the second embodiment, the second release member 81 can move forward and backward relative to the second mounting housing 16 to a locked position or a released position, and the third housing portion 161 and / or the fourth housing portion 162 can be provided with a structure 1621 to guide the movement of the second release member 81. Figure 18 and Figure 20 When the second release member 81 moves backward to the release position, the first linking member 82 drives the engaging member 83 to pivot, so that the engaging protrusion 832 abuts against the engaging portion 431, the limiting member 43 moves downward, and the second flat head engages with the first hole 4301, so that the swing arm 21 can swing forward and backward. Figure 19 and Figure 21 When the second release member 81 moves forward to the locking position, the engaging protrusion 832 disengages from the engaging portion 431, the avoidance portion 833 faces the limiting member 43 and allows the limiting member 43 to move upward, the second flat head portion cooperates with the second hole portion 4302, and the swing of the swing arm 21 is locked.

[0163] See also Figure 16 and Figure 17 This second embodiment illustrates an exemplary connection structure of a first linking member 82, a second release member 81, and a latching member 83. More specifically, the first linking member 82 is arcuate, with a first connecting pin 821 disposed at its first end, and a second elongated hole 811 slidably engaged with the first connecting pin 821 disposed at the second release member 81. Of course, in alternative embodiments, the positions of the first connecting pin 821 and the second elongated hole 811 on the first linking member 82 and the second release member 81 may be interchanged. A third elongated hole 822 is disposed at the second end of the first linking member 82, and a second connecting pin 8311 is disposed on a connecting lug 831. The third elongated hole 822 slidably engages with the second connecting pin 8311. Of course, in alternative embodiments, the positions of the second connecting pin 8311 and the third elongated hole 822 on the connecting lug 831 and the first linking member 82 may be interchanged.

[0164] See also Figure 18 and Figure 19 To facilitate operation of the second release member 81, the second release member 81 has a second shift block 812 that protrudes outward from the second mounting housing 16. The second shift block 812 is easily operated to change the front-to-back position of the second release member 81. The second mounting housing 16 is correspondingly provided with a third opening 1605 for movement of the second shift block 812. The third opening 1605 also limits the travel of the second shift block 812.

[0165] Depend on Figure 15 and 16It can be seen that in some embodiments, the upper end of the support tube 11 passes through the second sleeve portion 160 of the second mounting shell 16 and extends into the interior of the second mounting shell 16, and the fixing member 41 located at the upper end of the support tube 11 is also correspondingly accommodated in the interior of the second mounting shell 16. The second mounting shell 16 is provided with a fourth opening 1606 for the swing arm 21 to pass through, and the fourth opening 1606 also helps to limit the swing angle of the swing arm 21.

[0166] It should be noted that, although in the above-mentioned first and second embodiments, the fixing member 41 is sleeved in the support tube 11, in other embodiments, the fixing member 41 may not be sleeved in the support tube 11. For example, the fixing member 41 is fixed to the outside of the support tube 11, and the pivot 211 is correspondingly pivotally connected to the fixing member 41 on the outside of the support tube 11. In this case, the support tube 11 does not need to be provided with the above-mentioned first through hole 110.

[0167] This embodiment also provides a swing mechanism, which includes the aforementioned fixing member 41, swing arm 21, and abutment member 42. The following mainly describes the differences between the swing mechanism in this embodiment and the swing mechanism in the first embodiment, and the similarities or similarities between the two are not repeated here.

[0168] A limiting member 43 is provided in the limiting groove 411. More specifically, the limiting member 43 is, for example, a plate member, which is inserted into the limiting groove 411 of the fixing member 41, and the position of the limiting member 43 in the limiting groove 411 is adjustable. The limiting member 43 has an opening 430 for the pivot 211 to pass through, and the opening 430 includes a first hole portion 4301 and a second hole portion 4302. The first hole portion 4301 can be formed by, for example, docking two sub-fan-shaped holes. The first hole portion 4301 includes a first wall 43011 and a second wall 43012, and a first limiting surface 4111 and a second limiting surface 4112 are formed on the first wall 43011 and the second wall 43012. The second hole portion 4302 is used to engage with the abutment member 42 to lock the swing arm.

[0169] The swing mechanism changes the position of the limit member 43 in the limit groove 411, and can limit the extreme swing position of the swing arm 21, that is, the swing angle range, through the cooperation between the first hole portion 4301 and the abutment 42, and lock the swing arm 21 through the engagement of the second hole portion 4302 and the abutment 42.

[0170] In addition, the swing mechanism can be configured with the second swing locking mechanism 8 and the second elastic element 45 to adjust the position of the limiting member 43 in the limiting groove 411 .

[0171] The swing mechanism allows the swing arm 21 to swing within a preset angle range, and can also lock the swing arm 21 so that the swing arm 21 does not swing.

[0172] Third embodiment

[0173] Figures 22 to 27 A schematic diagram illustrates a seat connection structure according to a third embodiment of the present invention, which is applied to a child carrier. In this third embodiment, the seat connection structure is described using the children's dining chair exemplified in the first and second embodiments. It is understood that the application scope of this seat connection structure is not limited to children's dining chairs and can be applied to other types of child carriers or other structures requiring quick seat removal.

[0174] See also Figure 22 and Figure 23 The seat connection structure includes a support frame 22, a first positioning slot 31, a second positioning slot 32, and a locking device 9. The first positioning slot 31 and the second positioning slot 32 are arranged on the first surface of the seat 3. The support frame 22 includes a first support rod 221 and a second support rod 222 arranged opposite to each other. As described in the first embodiment above, the first support rod 221 and the second support rod 222 extend in the front-to-back direction. In addition, the support frame 22 may also include at least one cross bar, which may include, for example, a first cross bar 223, a second cross bar 224, and a third cross bar 225.

[0175] See also Figure 23 The first surface of the seat 3, more specifically, the bottom surface of the base 305, may be provided with a first positioning groove 31 and a second positioning groove 32. The first positioning groove 31 is configured to accommodate the first support rod 221, and the second positioning groove 32 is configured to accommodate the second support rod 222. When the first support rod 221 and the second support rod 222 are respectively engaged in the first positioning groove 31 and the second positioning groove 32, they both support the seat 3 and restrict left-right movement of the seat 3 relative to the support frame 22.

[0176] The bottom surface of the seat 3 may also be provided with a positioning groove for accommodating at least one crossbar. For example, the bottom surface of the base 305 may also be provided with a third positioning groove 331, a fourth positioning groove 332, and a fifth positioning groove 333. The first crossbar 223, the second crossbar 224, and the third crossbar 225 may be respectively snapped into the third positioning groove 331, the fourth positioning groove 332, and the fifth positioning groove 333. When these crossbars are snapped into their corresponding positioning grooves, they can support the seat 3 and restrict the forward and backward movement of the seat 3 relative to the support frame 22. To facilitate the installation of the support bars and crossbars, the first positioning groove 31, the second positioning groove 32, the third positioning groove 331, the fourth positioning groove 332, and the fifth positioning groove 333 are interconnected. It will be appreciated that there are many ways to restrict the forward and backward movement of the seat 3 relative to the support frame 22, and are not limited to the above-mentioned engagement of the crossbars and positioning grooves.

[0177] It should be noted that, although in the aforementioned first and second embodiments, both ends of the support frame 22 are connected to the main frame 1 via the swing arm 21, so that the seat 3 has a swing mode, in some alternative embodiments, the support frame 22 may be fixed directly or indirectly to the main frame 1, so that the seat 3 does not have a swing mode. In addition, in some alternative embodiments, the first support rod 221 and the second support rod 222 may extend in the left and right directions instead of in the front-to-back direction. In this arrangement, when the first support rod 221 and the second support rod 222 are respectively inserted into the first positioning slot 31 and the second positioning slot 32, they are used to limit the movement of the seat 3 in the front-to-back direction relative to the support frame 22, while the movement of the seat 3 in the left and right directions can be achieved by any suitable structure.

[0178] See also Figure 22 and Figure 23 The second surface of the seat 3 opposite to the first surface, for example, the top surface of the seat 3, more specifically, the top surface of the base 305, can be provided with a first slide groove 33 and a second slide groove 34, and the extension direction of the first slide groove 33 is substantially perpendicular to the extension direction of the first positioning groove 31, and the extension direction of the second slide groove 34 is substantially perpendicular to the extension direction of the second positioning groove 32.

[0179] See also Figure 22 and Figure 23 The locking device 9 includes a first stopper 91, a second stopper 92, and an elastic element 93. The first stopper 91 and the second stopper 92 are both slidably engaged with the seat 3. For example, the first stopper 91 is slidably disposed in the first slide groove 33, and the second stopper 92 is slidably disposed in the second slide groove 34. The elastic element is used to drive the first stopper 91 to a locked position. At this time, the first stopper 91 is located below the first support rod 221 to prevent the first support rod 221 from dislodging from the first positioning groove 31, that is, the first support rod 221 is locked between the first stopper 91 and the seat 3. The elastic element is also used to drive the second stopper 92 to a locked position. At this time, the second stopper 92 is located below the second support rod 222 to prevent the second support rod 222 from dislodging from the second positioning groove 32, that is, the second support rod 222 is locked between the second stopper 92 and the seat 3. Thus, when the locking device 9 is in the locked state, the first stopper 91 and the second stopper 92 lock the connection between the first support rod 221, the second support rod 222 and the seat 3. In some embodiments, the first stopper 91 and the second stopper 92 can be set separately or connected together.

[0180] Depending on the connection between the first stopper 91 and the second stopper 92, the elastic element 93 may include one or more springs. For example, when the first stopper 91 and the second stopper 92 are separated, the elastic element may include one spring for driving the first stopper 91 and one spring for driving the second stopper 92. In this third embodiment, the first stopper 91 and the second stopper 92 are connected together. In this case, the elastic element may include one spring, which acts on both the first stopper 91 and the second stopper 92.

[0181] See also Figures 24 to 27 When the seat 3 needs to be removed from the support frame 22, the first stopper 91 and the second stopper 92 are driven to move in the opening direction N so that the first stopper 91 and the second stopper 92 simultaneously exit the first positioning groove 31 and the second positioning groove 32, and the locking device 9 is switched to Figure 26 and Figure 27 Shown in the unlocked state. Now, the seat 3 can be lifted upwards and easily removed from the support frame 22.

[0182] When the seat 3 needs to be installed on the support frame 22, under the action of external force, the locking device 9 is switched to the unlocked state, and then the first support rod 221 is clamped into the first positioning groove 31 and the second support rod 222 is clamped into the second positioning groove 32. Finally, the external force is removed, and the elastic element 93 automatically drives the first stopper 91 and the second stopper 92 to be inserted into the first positioning groove 31 and the second positioning groove 32, so that the first stopper 91 and the second stopper 92 move to the locked position. As mentioned above, at this time, the locking device 9 is switched to the unlocked state. Figure 24 and Figure 25 In the locked state shown, the seat 3 is locked on the support frame 22. The third embodiment provides a seat connection structure with a simple structure, which allows the seat 3 and the support frame 22 to be quickly assembled and disassembled.

[0183] Figure 23shows an exemplary embodiment in which the first stopper 91 and the second stopper 92 are integrally connected. More specifically, the first stopper 91 and the second stopper 92 are integrally connected via a connecting bracket 94. To accommodate the connecting bracket 94, the top surface of the seat 3 may further be provided with a third slot 35, through which the first slot 33 and the second slot 34 are connected. The slot depth of the third slot 35 may be less than the slot depth of the first slot 33 and the slot depth of the second slot 34. The connecting bracket 94 is disposed in the third slot 35. The connecting bracket 94 has a first surface 941 and a second surface 942 at each end thereof, each bent downward relative to the connecting bracket 94. The first stopper 91 is connected to the first surface 941, and the second stopper 92 is connected to the second surface 942. The first stopper 91 and the second stopper 92 are bent in the same direction relative to the first surface 941 and the second surface 942, respectively. In some embodiments not shown, the elastic element 93 may include at least one spring arranged in the first slide groove 33 and / or the second slide groove 34, and the at least one spring keeps the locking device 9 in a locked state by abutting against the first surface 941 and / or the second surface 942.

[0184] See also Figure 22 The connecting frame 94 is provided with a mounting hole 940, in which a fastener 945 is installed. The fastener 945 is, for example, a bolt. The bottom wall of the third chute 35 is provided with a fourth elongated hole 351 that is slidably engaged with the fastener 945. The first end (threaded end) of the fastener 945 passes through the mounting hole 940 and the fourth elongated hole 351 in sequence and then extends downward. When the seat 3 needs to be removed from the support frame 22, the seat 3 is opened along the opening direction N ( Figure 25 ) Manually push the fastener 945, and while the fastener 945 moves along the fourth elongated hole 351, it drives the connecting frame 94 to move, so that the first stopper 91 and the second stopper 92 simultaneously exit the first positioning groove 31 and the second positioning groove 32.

[0185] See also Figure 1 and Figure 22 In the third embodiment, the first slide groove 33, the second slide groove 34, and the third slide groove 35 can be covered by the seat portion 3071, so as to prevent foreign matter from entering and interfering with the movement of the connecting frame 94. Of course, in some alternative embodiments, the first slide groove 33, the second slide groove 34, and the third slide groove 35 can be covered by any suitable structure.

[0186] See also Figure 25 and Figure 27 In order to facilitate the unlocking operation of the locking device 9, the first end of the fastener 945 is connected to the third unlocking member 95. For example, Figure 22As shown, the third release member 95 is connected to the first end of the fastener 945 via a screw hole 950. The third release member 95 can be relatively large to facilitate user operation. Furthermore, the bottom surface of the seat 3 is provided with a fourth slot 36. The fourth slot 36 and the third slot 35 are adjacent in the direction of extension of the fastener 945, and the fourth slot 36 is located between the first slot 33 and the second slot 34. As can be seen in the figure, the fourth slot 36 is located below the third slot 35. The third release member 95 is accommodated in the fourth slot 36.

[0187] Continue to see Figure 25 and Figure 27 In the third embodiment, the elastic element 93 can be a spring installed in the fourth slide groove 36, and the spring is clamped between the side wall of the fourth slide groove 36 and the third release member 95, so that the structure is more compact. More specifically, as Figure 22 As shown, the first end of the third release member 95 has a first receiving groove 951 for receiving the end of the elastic element 93. In addition, the second end of the third release member 95 can be provided with a pressing recess 952 for easy pressing by a human hand.

[0188] See also Figure 24 and Figure 26 Part of the fourth slide groove 36 can be covered by a shield 361, and the shield 361 is used to shield the elastic element 93, so as to prevent external foreign matter from interfering with the normal operation of the elastic element 93.

[0189] Fourth embodiment

[0190] Figures 28 to 29 The seat connection structure provided according to the fourth embodiment of the present utility model is schematically shown. The main difference between the seat connection structure provided by the fourth embodiment and the seat connection structure of the above-mentioned third embodiment lies in the implementation method of the locking device 9. In the absence of conflict, the components in this embodiment and the connection relationship between the components can refer to the description in the above third embodiment.

[0191] See also Figure 28 In the fourth embodiment, the first stopper 91 and the second stopper 92 of the locking device 9 are separated from each other instead of being connected as one. The first slide groove 33 and the second slide groove 34 for installing the first stopper 91 and the second stopper 92 are formed in a main slide groove 304, and the groove depth of the main slide groove 304 can be consistent. When the first positioning groove 31 and the second positioning groove 32 extend in the front-to-back direction, the main slide groove 304 extends in the left-to-right direction, and the extension direction of the main slide groove 304 is substantially perpendicular to the extension direction of the first positioning groove 31 and the second positioning groove 32. The first stopper 91 and the second stopper 92 are slidably matched with the main slide groove 304, and the first stopper 91 and the second stopper 92 are affected by the opening direction N( Figure 31) pushes the device to move toward each other so that the locking device 9 switches to Figure 32 and Figure 33 The elastic element 93 includes a first spring 931 and a second spring 932, which are spaced apart in the front-to-back direction and respectively clamped between the first stopper 91 and the second stopper 92. The first spring 931 and the second spring 932 are used to drive the first stopper 91 and the second stopper 92 to move away from each other, so that the locking device 9 is switched to the unlocked state. Figure 30 and Figure 31 Of course, in some embodiments, the first spring 931 and the second spring 932 can be selectively arranged between the first stopper 91 and the second stopper 92, which can also achieve the effect of driving the first stopper 91 and the second stopper 92 away from each other.

[0192] See also Figures 28 to 30 The locking device 9 further includes a second linking member 96, which is located in the main sliding groove 304 and is operatively connected to the first stopper 91 and the second stopper 92. When one of the first stopper 91 and the second stopper 92 is pushed to release one of the first support rod 221 and the second support rod 222, the second linking member 96 pushes the other of the first stopper 91 and the second stopper 92 accordingly, thereby synchronously releasing the other of the first support rod 221 and the second support rod 222.

[0193] Figure 28 and Figure 29 FIG. 4 shows an exemplary structure of the second linking member 96 , the first stopper 91 and the second stopper 92 .

[0194] The first end 901 of the first stopper 91 and the first end 902 of the second stopper 92 are spaced apart from each other. The first end 901 of the first stopper 91 and the first end 902 of the second stopper 92 are configured to extend into the first positioning slot 31 and the second positioning slot 32, respectively, under the action of the elastic element 93, thereby locking the first support rod 221 between the first stopper 91 and the seat 3, and locking the second support rod 222 between the second stopper 92 and the seat 3. Thus, the first stopper 91 and the second stopper 92 prevent the first support rod 221 and the second support rod 222 from respectively disengaging from the first positioning slot 31 and the second positioning slot 32, thereby locking the first support rod 221 and the second support rod 222 with the seat 3. The second end of the first stopper 91 and the second end of the second stopper 92, which are adjacent to each other (not numbered in the figure), are respectively provided with a first connecting protrusion 911 and a second connecting protrusion 921.

[0195] The second linking member 96 is a rod, the middle portion of which can be connected to the bottom of the main chute 304 via a pivot 963. The first end of the second linking member 96 is pivotally connected to the first connecting protrusion 911. For example, the first end of the second linking member 96 is provided with a first boss 961, and the first connecting protrusion 911 is provided with a fifth elongated hole 9111, and the first boss 961 and the fifth elongated hole 9111 are slidably engaged. The second end of the second linking member 96 is pivotally connected to the second connecting protrusion 921. For example, the second end of the second linking member 96 is provided with a second boss 962, and the second connecting protrusion 921 is provided with a sixth elongated hole 9211, and the second boss 962 and the sixth elongated hole 9211 are slidably engaged. In some alternative embodiments, the positions of the first boss 961 and the fifth elongated hole 9111 on the second linking member 96 and the first connecting protrusion 911 may be interchanged, and the positions of the second boss 962 and the sixth elongated hole 9211 on the second linking member 96 and the second connecting protrusion 921 may also be interchanged. Of course, the structures of the second linking member 96, the first stopper 91, and the second stopper 92 are not limited to the above examples.

[0196] See also Figure 30 and Figure 32 , the first spring 931 is provided between the end of the first connecting protrusion 911 and the second stopper 92, and the second spring 932 is provided between the end of the second connecting protrusion 921 and the first stopper 91. More specifically, as Figure 29 As shown, a first positioning post 9113 is provided at the end of the first connecting protrusion 911, and a second receiving groove 9213 is provided at a position of the second stopper 92 opposite to the first positioning post 9113. The first end of the first spring 931 is fitted over the first positioning post 9113, and the second end of the first spring 931 extends into the second receiving groove 9213, thereby firmly clamping the first spring 931 between the first connecting protrusion 911 and the second stopper 92. Similarly, a second positioning post 9215 is provided at the end of the second connecting protrusion 921, and a third receiving groove 9115 is provided at a position of the first stopper 91 opposite to the second positioning post 9215. The first end of the second spring 932 is fitted over the second positioning post 9215, and the second end of the second spring 932 extends into the third receiving groove 9115, thereby firmly clamping the second spring 932 between the second connecting protrusion 921 and the first connecting protrusion 911.

[0197] To save space, see Figures 28 to 31The bottom surface of the first connecting protrusion 911 is provided with a first recess 9112, located below the fifth elongated hole 9111. The first end of the second linking member 96 is received in this first recess 9112, and the first protrusion 961 passes through this first recess 9112 and enters the fifth elongated hole 9111. The shape of the first recess 9112 is designed to not interfere with the rotation of the second linking member 96, for example, the first recess 9112 is triangular. Furthermore, the bottom surface of the second connecting protrusion 921 is provided with a second recess 9212, located below the sixth elongated hole 9211. The second end of the second linking member 96 is embedded in this second recess 9212, and the second protrusion 962 passes through this second recess 9212 and enters the sixth elongated hole 9211. The shape of the second recess 9212 is designed to not interfere with the rotation of the second linking member 96, for example, the second recess 9212 is triangular.

[0198] See also Figure 28 and Figure 31 The side wall of the main slide 304 can be provided with a first wedge block 97 and a second wedge block 98. The first wedge block 97 presses the first stopper 91 downward above the first stopper 91, and the second wedge block 98 presses the second stopper 92 downward above the second stopper 92, thereby restricting the first stopper 91, the second linking member 96 and the second stopper 92 in the main slide 304.

[0199] See also Figure 1 and Figure 28 In the fourth embodiment, the main chute 304 can be covered by the seat portion 3071, so as to prevent foreign matter from entering and interfering with the movement of the locking device 9. Of course, in some alternative embodiments, the main chute 304 can be covered by any suitable structure.

[0200] See also Figure 29 、 Figure 31 and Figure 32 The first end portion 901 of the first stopper 91 and the first end portion 902 of the second stopper 92, which are spaced apart from each other, are respectively provided with a pushing inclined surface. Specifically, the first end 901 of the first stopper 91 may be provided with a first pushing inclined surface 9011, and the first end 902 of the second stopper 92 may be provided with a second pushing inclined surface 9021. The first pushing inclined surface 9011 and the second pushing inclined surface 9021, on the one hand, facilitate manual pushing of the first stopper 91 and the second stopper 92 to release the locking device 9. On the other hand, when the seat 3 and the support frame 22 are assembled together, there is no need to manually release the locking device 9. The first support rod 221 and the second support rod 222 can release the locking device 9 by respectively abutting against the first pushing inclined surface 9011 and the second pushing inclined surface 9021, so that the first support rod 221 and the second support rod 222 can easily be inserted into the first positioning groove 31 and the second positioning groove 32.

[0201] The present invention also provides a child carrier, which can be a stroller, a children's dining chair, or other similar vehicle. The child carrier includes a main frame 1, a swing bracket assembly 2, a seat 3, and the aforementioned seat connection structure. The swing bracket assembly 2 is connected to the seat 3 via the seat connection structure, and the support frame 22 can be directly or indirectly mounted on the main frame 1.

[0202] Fifth embodiment

[0203] Figures 34 to 54 The structure of the child carrier provided according to the fifth embodiment of the present invention is schematically shown. Similar to the first and second embodiments described above, the child carrier in the fifth embodiment is also described using a children's dining chair as an example. Of course, the type of child carrier is not limited to a children's dining chair. Figure 34 and Figure 37 The child carrier, for example, includes a main frame 1 , a swing support assembly 2 and a seat 3 .

[0204] See also Figure 36 and Figure 37 The structure of the main frame 1 in this fifth embodiment is similar to that of the main frame 1 in the first embodiment described above. The main frame 1 includes two front legs 101, two rear legs 102, a front crossbar 1031 connecting the two front legs 101, a rear crossbar 1032 connecting the two rear legs 102, a folding member 104 connecting the front legs 101 and the rear legs 102 on the same side, and support tubes 11 disposed on the upper portions of each front leg. The interrelationships between these components can be found in the description of the first embodiment described above and will not be repeated here.

[0205] See also Figure 36 、 Figure 37 and Figure 49 In this fifth embodiment, a swing bracket assembly 2 is respectively provided on the left and right sides of the main frame 1, and the left and right sides of the seat 3 are respectively connected to the main frame 1 through the corresponding swing bracket assemblies 2. In some embodiments, the swing bracket assembly 2 includes a swing arm 21 and an auxiliary swing arm 29. The auxiliary swing arm 29 is arranged parallel to the swing arm 21, and the auxiliary swing arm 29 assists the swing arm 21 in supporting the seat 3. In order to facilitate the installation of the swing bracket assembly 2, the main frame 1 may further include a third mounting shell 17, and the third mounting shell 17 is mounted on the main frame 1. More specifically, the third mounting shell 17 is mounted on the support tube 11, and the upper ends of the swing arm 21 and the auxiliary swing arm 29 are pivotally connected to the third mounting shell 17 respectively.

[0206] See also Figure 40In some embodiments, the third mounting shell 17 can be formed by docking a fifth shell portion 171 and a sixth shell portion 172. For example, the fifth shell portion 171 and the sixth shell portion 172 are joined together and then fixed by screws 179. The fifth shell portion 171 is closer to the longitudinal center plane of the child carrier than the sixth shell portion 172. The sixth shell portion 172 has, for example, a third sleeve portion 170, which can be mounted on the end of the support tube 11. In the absence of conflict, the connection method between the support tube 11 and the third sleeve portion 170 can refer to the connection method between the first sleeve portion 150 and the support tube 11 in the first embodiment mentioned above. An operating button 174 (see Figure 36 ), the function of the operating button 174 can refer to the function of the operating button 154 in the above-mentioned first embodiment.

[0207] See also Figure 36 and Figure 37 , the upper end of the swing arm 21 and the upper end of the auxiliary swing arm 29 are pivotally connected to the third mounting shell 17 respectively, and the lower end of the swing arm 21 and the lower end of the auxiliary swing arm 29 are pivotally connected to the seat 3 respectively, and the swing arm 21 and the auxiliary swing arm 29 parallel to each other constitute two opposite sides of a parallelogram. It can be understood that when the swing arm 21 and the auxiliary swing arm 29 swing, they will drive the seat 3 to swing and keep the seat 3 level during the swinging process. The seat 3 remains level during the swinging process, providing a more comfortable and safer riding experience for the children sitting on the seat 3. The seat 3 remains level during the swinging process, allowing the swing angle range of the swing arm 21 and the auxiliary swing arm 29 to be greater than the swing angle range exemplified in the previous embodiment. For example, the swing arm 21 and the auxiliary swing arm 29 are relative to their own starting positions (see Figure 34 In the initial position, the swing arm 21 and the auxiliary swing arm 29 are substantially perpendicular to the ground) and the maximum angle α of the backward swing can be greater than 20 degrees (see Figure 36 ), for example, it can be 25 degrees or even greater than 25 degrees, and the maximum angle β of the forward swing can also be greater than 20 degrees (see Figure 35 ), for example, it can be 25 degrees or even greater than 25 degrees.

[0208] See also Figure 37 To facilitate the connection between each swing bracket assembly 2 and the seat 3, in some embodiments, each swing bracket assembly 2 may further include a connector 28. The connection between the left swing bracket assembly 2 and the seat 3 is described below as an example. The structure of the right swing bracket assembly 2 is symmetrical to that of the left swing bracket assembly 2 and will not be described further here.

[0209] See also Figure 40 、 Figure 45 and Figure 53The lower end of the swing arm 21 and the lower end of the auxiliary swing arm 29 are respectively pivotally connected to the connecting body 28. For example, the lower end of the swing arm 21 is provided with a pivot 219, and the lower end of the auxiliary swing arm 29 is provided with a pivot 291 (see Figure 53 ), the pivot 219 and the pivot 291 are parallel to each other, and the pivot 219 and the pivot 291 are respectively inserted into the corresponding mounting holes 2810 of the connecting body 28. The connecting body 28 can be provided with a protrusion 280 extending upward, and the wall of the protrusion 280 can be provided with a clamping portion 281, which is, for example, an elastic clamping block. Figure 50 The bottom of the seat 3 is provided with a groove 3062 for accommodating the protrusion 280, and the wall of the groove 3062 is provided with a locking hole 30621. Figure 54 When the seat 3 and the swing bracket assembly 2 need to be connected, the protrusion 280 of the connector 28 can be inserted into the groove 3062 so that the engaging portion 281 and the engaging hole 30621 engage with each other.

[0210] The connection between the connector 28 and the seat 3 is not limited to the above example. For example, in some alternative embodiments, the positions of the engaging portion 281 and the engaging hole 30621 on the protrusion 280 and the seat 3 may be interchangeable. In some embodiments, the connection between the connector 28 and the seat 3 may be detachable or non-detachable, and the connection between the swing arm 21 and the auxiliary swing arm 29 and the connector 28 may be detachable or non-detachable. It should also be noted that while the swing arm 21 and the auxiliary swing arm 29 are connected to the seat 3 via the connector 28 in the above embodiment, in other embodiments, the swing arm 21 and the auxiliary swing arm 29 may be directly pivotally connected to the seat 3, for example.

[0211] Figure 40 and Figure 53 An exemplary connection structure between the auxiliary swing arm 29 and the third mounting shell 17 is shown. A pivot 292 is provided at the upper end of the auxiliary swing arm 29, and the pivot 292 is parallel to the pivot 291. The pivot 292 passes through the hole 1703 of the fifth housing portion 171 and is inserted into the hole seat 1721 of the sixth housing portion 172. A shaft sleeve 293 is mounted on the pivot 292, and the shaft sleeve 293 is fixed to the pivot 292 by, for example, a fastener 295. The shaft sleeve 293 can be made of a wear-resistant material with a low friction coefficient, which can reduce the friction between the pivot 292 and the third mounting shell 17. The shaft sleeve 293 cooperates with the cavity in the third mounting shell 17 to limit the axial position of the pivot 292.

[0212] See also Figure 36 and Figure 50, shows an exemplary structure of a seat 3, which is similar to the structure of the seat 3 in the first embodiment. The seat 3 includes a base 305, two guardrails 306, a backrest 307, a dining tray 308 or a front armrest, and a footrest 309. In the absence of conflict, the connection relationship between these components of the seat 3 can be referred to the structure of the seat 3 in the first embodiment, and will not be repeated here.

[0213] In some embodiments, a swing limiting mechanism 4 is provided between at least one side of the swing arm 21 and the main frame 1 (see FIG. Figure 40 ), the swing limiting mechanism 4 is used to limit the swing angle of the swing arm 21, thereby controlling the swing amplitude of the seat 3 to take into account both the safety and comfort of riding when the seat 3 is in the swing mode. Figure 36 、 Figures 38 to 40 In this fifth embodiment, a swing limiting mechanism 4 is provided between each of the left and right swing arms 21 and the main frame 1. For ease of explanation, only the exemplary structure of the swing limiting mechanism 4 between the left swing arm 21 and the main frame 1 is described below. The swing limiting mechanism 4 between the right swing arm 21 and the support tube 11 is symmetrical to the left swing limiting mechanism 4 and will not be described separately here.

[0214] See also Figures 38 to 40 , the support tube 11 is provided with a first through hole 110 which passes through the wall of the support tube 11 transversely, and the first through hole 110 is close to the upper end of the support tube 11. The swing limiting mechanism 4 includes a fixing member 41, and the fixing member 41 is fixed to the main frame 1. More specifically, the fixing member 41 is sleeved in the first through hole 110, and the fixing member 41 is fixed in the third mounting shell 17. Of course, in other embodiments, the fixing member 41 can also be fixed to the main frame 1 through other structures. For example, the third mounting shell 17 is mounted on the support tube 11, and the fixing member 41 is not directly sleeved in the first through hole 110 of the support tube 11, but is mounted on other suitable structures of the third mounting shell 17, so that the fixing member 41 is indirectly mounted on the support tube 11 of the main frame 1.

[0215] Continue to see Figures 38 to 40, the circumferential rotation of the fixing member 41 is restricted. In some embodiments, the hole wall of the first through hole 110 is provided with a second axial guide portion 114, which is used to guide the axial movement of the fixing member 41 during assembly, and at the same time restrict the rotation of the fixing member 41 relative to the support tube 11 after assembly. In some embodiments, the second axial guide portion 114, for example, includes a recess formed on the hole wall of the first through hole 110, and the outer periphery of the fixing member 41 is provided with a ridge 4107 that engages with the recess. Of course, there are many ways to implement the second axial guide portion 114. For example, in some alternative embodiments, the second axial guide portion 114, for example, may include a protrusion formed on the hole wall of the first through hole 110, and the outer periphery of the fixing member 41 is correspondingly provided with a groove that engages with the protrusion.

[0216] Continue to see Figures 38 to 40 The fixing member 41 is provided with a limiting groove 411. The extending direction of the limiting groove 411 is parallel to the axial direction of the pivot 211 provided at the upper end of the swing arm 21. Therefore, the extending direction of the limiting groove 411 can also be referred to as the axial direction of the limiting groove 411. The limiting groove 411, for example, has a notch 41101 and a groove bottom 41102. The notch 41101 faces the fifth housing portion 171. In some embodiments, the fifth housing portion 171 is provided with a sleeve 1712. The sleeve 1712 is inserted into the limiting groove 411 of the fixing member 41 via the notch 41101. The sleeve 1712 provides support for the fixing member 41. In some embodiments, the groove bottom 41102 is located within the first through hole 110. The groove bottom 41102 can be limited in position by a flange 1105 formed on the first through hole 110. In some alternative embodiments, the groove bottom 41102 can, for example, pass through the first through hole 110 and be directly limited in position by the sixth housing portion 172. The groove bottom 41102 has, for example, a central hole 41100 (see Figure 41 ).

[0217] See also Figure 45 and Figure 46 The upper end of the swing arm 21 is provided with a pivot 211, which is connected to the swing arm 21 so as not to rotate relative to each other, and the pivot 211 can rotate relative to the fixing member 41. In some embodiments, the pivot 211 and the swing arm 21 are integrally formed, for example. The pivot 211 is provided in the limiting groove 411, and the pivot 211 is provided in the limiting groove 411. Figures 38 to 41The end of the pivot 211 passes through the hole 1704 in the fifth housing portion 171, enters the limiting groove 411, and then exits through the center hole 41100 of the groove bottom 41102. In some embodiments, the pivot 211 may be provided with a positioning groove 2117. An axial limiting member, such as a retaining spring 27, engages with the positioning groove 2117. The retaining spring 27 abuts against the groove bottom 41102 outside the limiting groove 411 to limit the axial movement of the pivot 211. When the swing arm 21 is subjected to a swinging force, the swing arm 21 and the pivot 211 swing together about the axis of the pivot 211.

[0218] In some embodiments not shown, a first limiting surface 4111 and a second limiting surface 4112 may be provided on the inner wall of the limiting groove 411. A contact member 42 is mounted on the pivot 211. The contact member 42 is non-rotatably connected to the pivot 211 and is located between the first limiting surface 4111 and the second limiting surface 4112. The contact member 42 limits the swing angle of the swing arm 21 by abutting against the first limiting surface 4111 and the second limiting surface 4112. Figure 40 In some embodiments, the abutment member 42 and the pivot 211 are separate structures. For example, the pivot 211 is provided with a slot 2116, and the abutment member 42 is provided with a latch 420. The abutment member 42 engages with the slot 2116 via the latch 420. When the seat 3 is in the swing mode, the abutment member 42 limits the swing angle of the swing arm 21 by abutting against the first limiting surface 4111 and the second limiting surface 4112. When the swing angle of the swing arm 21 is limited, the swing angle of the auxiliary swing arm 29 is also limited.

[0219] See also Figures 38 to 40 In some embodiments, a limiting member 43 is disposed in the limiting groove 411. More specifically, the limiting member 43 is, for example, a plate member and is inserted into the limiting groove 411. A first limiting surface 4111 and a second limiting surface 4112 are formed on the limiting member 43, configured to abut against the abutting member 42. In some embodiments, the limiting member 43 slidably engages with the limiting groove 411. By changing the position of the limiting member 43 within the limiting groove 411, the limiting member 43 can also lock the swing of the swing arm 21.

[0220] See also Figure 43 The limiting member 43 includes a first area 43a and a second area 43b, which are arranged in sequence in the extension direction of the limiting groove 411. The first area 43a has a first limiting surface 4111 and a second limiting surface 4112, and the second area 43b is suitable for engaging with the abutment 42 to lock the swing of the swing arm 21. The limiting member 43 has a first position or a second position. When the limiting member 43 switches between the first position and the second position, the first area 43a and the second area 43b selectively cooperate with the abutment 42. Figure 45When the limiting member 43 moves to the first position, the first area 43a cooperates with the abutting member 42, the swing arm 21 can swing, and the seat 3 is in the swing mode. The abutting member 42 abuts against the first limiting surface 4111 or the second limiting surface 4112 as the swing arm 21 swings, and the swing angle of the swing arm 21 is controlled. Figure 46 When the limiting member 43 moves to the second position, the second area 43b is engaged with the abutting member 42, the swing arm 21 is locked, and the seat 3 is switched from the swing mode to the fixed mode.

[0221] See also Figure 43 In some embodiments, the limiting member 43 includes a force-bearing plate 435 and two arms 436 extending from the force-bearing plate 435. Figure 38 and Figure 39 The abutment member 42 is positioned near the notch 41101, the force-bearing plate 435 is positioned near the groove bottom 41102, and two arms 436 extend from the force-bearing plate 435 toward the notch 41101. In other words, the two arms 436 extend axially along the limiting groove 411. The force-bearing plate 435 is configured to receive the driving force to cause the limiting member 43 to move axially. The force-bearing plate 435 has a central hole 4350, through which the pivot shaft 211 passes.

[0222] See also Figure 43 In order to prevent the limiting member 43 from rotating relative to the fixing member 41, the outer contour of the force-bearing plate 435 is a non-circular structure. Figure 41 The sidewall 41131 of the limiting groove 411 has a first axial guide portion 4113 that slidably engages with the force-bearing plate 435. The first axial guide portion 4113 is used to guide the axial movement of the limiting member 43. The first region 43a and the second region 43b are formed at different axial positions on each arm 436. By controlling the reciprocating movement of the limiting member 43 between the first and second positions, the first and second regions 43a, 43b selectively engage with the abutment member 42. Figure 43 The first region 43a is closer to the force-bearing plate 435 than the second region 43b. In some alternative embodiments, the axial positions of the first region 43a and the second region 43b can be interchanged, so that the first region 43a is farther away from the force-bearing plate 435 than the second region 43b.

[0223] See also Figure 38 and Figure 42The abutment 42 is, for example, located between the step 4106 in the limiting groove 411 and the end of the sleeve 1712, so that the axial movement of the abutment 42 is limited. Of course, in some alternative embodiments, the axial position of the abutment 42 can also be fixed by other suitable structures. The outer periphery of the abutment 42 is provided with two first grooves 427, each of which includes a first end wall 4271 and a second end wall 4272 opposite to each other. The two arms 436 of the limiting member 43 pass through the two first grooves 427 respectively. Figure 44 and Figure 45 When the first area 43a cooperates with the abutment 42, the swing arm 21 can swing, and the abutment 42 rotates around the axis of the pivot 211. When each first end wall 4271 swings to abut against the first limiting surface 4111 of the corresponding first area 43a, the swing arm 21 cannot continue to swing in the first direction T1. Similarly, when each second end wall 4272 swings to abut against the second limiting surface 4112 of the corresponding first area 43a, the swing arm 21 cannot continue to swing in the second direction T2. ​​The directions of the first direction T1 and the second direction T2 are opposite. It should be noted that although the number of arm bodies 436 and first groove portions 427 is described as two, in some alternative embodiments, the number of arm bodies 436 and first groove portions 427 can be, for example, one or more respectively.

[0224] See also Figure 43 The second area 43b of each arm 436 is provided with a first clamping block 4363, and each first clamping block 4363 extends radially inward. Figure 42 and Figure 44 The abutting member 42 may further include two second grooves 428 , which are respectively disposed at the groove bottoms 4273 of the two first grooves 427 . Figure 46 When the second area 43b is engaged with the abutment member 42, the two second grooves 428 are adapted to engage with the corresponding first latches 4363, respectively. At this point, the abutment member 42 and the swing arm 21 are locked and cannot swing. It will be appreciated that although the number of second grooves 428 and first latches 4363 is described as two, in some alternative embodiments, the number of second grooves 428 and first latches 4363 may each be one or more.

[0225] See also Figure 51 In some alternative embodiments, each set of corresponding first groove portions 427 and second groove portions 428 overlap each other. Figure 52The structure of the first section 43a of each arm 436 can remain unchanged, and the second section 43b of each arm 436 can include a second latch 4365 that protrudes perpendicularly to the extension direction of each arm 436. When the first section 43a of each arm 436 engages with the first groove 427, the swing arm 21 can swing. When the second section 43b of each arm 436 engages with the first groove 427 (also equivalent to the second groove 428), each second latch 4365 engages with the corresponding first groove 427, locking the swing arm 21 from swinging.

[0226] See also Figures 38 to 40 A third elastic element 46 is installed in the limiting groove 411. The third elastic element 46 is used to apply a driving force to the force-bearing plate 435 to move the force-bearing plate 435 toward the groove bottom 41102. In some embodiments, the third elastic element 46 is, for example, clamped between the abutment 42 and the force-bearing plate 435. In addition, the child carrier may also include a third swing locking mechanism 47, which is operably connected to the force-bearing plate 435 to drive the limiting member 43 to switch between the first position and the second position. That is, under the action of the third elastic element 46 and the third locking mechanism 47, the force-bearing plate 435 can move axially along the limiting groove 411, so that the limiting member 43 moves to the first position or the second position. As mentioned above, when the limiting member 43 is in the first position, the first area 43a of the arm 436 cooperates with the abutment 42, and the seat 3 is in the swing mode. When the limiting member 43 is in the second position, the second area 43b of the arm body 436 is engaged with the abutting member 42, the swing arm 21 cannot swing, and the seat 3 is in the fixed mode.

[0227] See also Figures 38 to 41 as well as Figure 47 and Figure 48 , shows an exemplary embodiment of the third swing locking mechanism 47. The third swing locking mechanism 47 includes a drive wheel 471. The drive wheel 471 is mounted on the pivot 211 through a center hole 4710 and is located between the force-bearing plate 435 and the groove bottom 41102. The drive wheel 471 abuts against the side of the force-bearing plate 435 facing the groove bottom 41102. The wall of the limiting groove 411 is provided with a ratchet portion 4117, and the drive wheel 471 is provided with a ratchet groove portion 4711. The ratchet groove portion 4711 is sequentially provided with a first ratchet groove 47111 having a first groove depth H1 and a second ratchet groove 47112 having a second groove depth H2 in the circumferential direction. The first groove depth H1 and the second groove depth H2 are unequal. The number of the ratchet portions 4117 , the first ratchet grooves 47111 , and the second ratchet grooves 47112 can be set as needed. For example, in some embodiments, the number of the ratchet portions 4117 is four, and the number of the first ratchet grooves 47111 and the second ratchet grooves 47112 are respectively four.

[0228] See also Figure 38 、 Figure 39 and Figure 47 In some embodiments, the first groove depth H1 is less than the second groove depth H2. When the driving wheel 471 is subjected to the pressing force S, it moves axially and rotates circumferentially, so that the ratchet portion 4117 is engaged with the first ratchet groove 47111 and the second ratchet groove 47112 in sequence. In some embodiments, when the ratchet portion 4117 is engaged with the first ratchet groove 47111, the limiting member 43 is in a position as shown in FIG. Figure 45 In the first position shown, when the ratchet portion 4117 and the second ratchet groove 47112 are engaged, the limiting member 43 is in the position shown in FIG. Figure 46 In some alternative embodiments, when the ratchet portion 4117 is engaged with the first ratchet groove 47111, the limiting member 43 is in the second position, and when the ratchet portion 4117 is engaged with the second ratchet groove 47112, the limiting member 43 is in the first position.

[0229] See also Figure 41 、 Figure 47 and Figure 48 In order to facilitate driving the driving wheel 471, the third swing locking mechanism 47 further includes a pressing member 472. The pressing member 472 has a pressing portion 4721 and a pushing portion 4722 extending from the pressing portion 4721. The groove bottom 41102 of the limiting groove 411 is provided with a mounting hole 41103, and the pushing portion 4722 extends into the interior of the limiting groove 411 through the mounting hole 41103. The pushing portion 4722 is used to apply a pressing force S to the inclined surface 47101 of the first ratchet groove 47111 or the inclined surface 47102 of the second ratchet groove 47112 of the driving wheel 471, so as to cause the driving wheel 471 to move axially and rotate circumferentially at the same time, thereby causing the ratchet portion 4117 of the fixing member 41 to engage with the first ratchet groove 47111 and the second ratchet groove 47112 in sequence. Figure 41 and Figure 49 In some embodiments, the pushing portion 4722 includes two pushing arms 47220 extending from the pressing portion 4721. A pushing step 47221 is provided at the middle of each pushing arm 47220. The pushing step 47221 is used to apply a pressing force S to the inclined surface 47101 or the inclined surface 47102 of the driving wheel 471. It will be understood that in some alternative embodiments, the number of pushing arms 47220 is not limited to two. Figure 43 The force-bearing plate 435 may be provided with an escape opening 4351 at a position corresponding to each pushing arm 47220 .

[0230] The following combination Figure 41 、 Figures 45 to 49 The operation process of switching the seat 3 between the fixed mode and the swing mode will be described in detail.

[0231] When the seat 3 is in a fixed mode where it cannot swing, the swing arm 21 cannot swing, the ratchet portion 4117 and the second ratchet groove 47112 are engaged, and the limiting member 43 is in a fixed mode where it cannot swing. Figure 46 In the second position shown, the first latch 4363 engages the second groove 428. Pressing the pressing member 472 once now causes the pushing step 47221 of the pushing portion 4722 to engage the inclined surface 47102, causing the drive wheel 471 to simultaneously move axially and rotate circumferentially. The axial movement of the drive wheel 471 drives the stopper 43 out of its second position, and the circumferential rotation of the drive wheel 471 causes the ratchet portion 4117 to align with the inclined surface 47101 of the first ratchet groove 47111. Then release the pressing piece 472, and the third elastic element 46 will apply a driving force to move the force-bearing plate 435 toward the bottom of the groove 41102, thereby pushing the driving wheel 471 in the opposite direction. When the inclined surface 47101 of the first ratchet groove 47111 of the driving wheel 471 and the ratchet portion 4117 abut against each other, the driving wheel 471 rotates until the first ratchet groove 47111 engages with the ratchet portion 4117. At this time, the limit piece 43 reaches the first position, the swing arm 21 can swing, and the seat 3 switches to the swing mode.

[0232] Similarly, when the seat 3 is in the swing mode, the pressing member 472 is pressed once, the ratchet portion 4117 disengages from the first ratchet groove 47111 and engages with the second ratchet groove 47112, the limit member 43 reaches the second position, the swing arm 21 cannot swing, and the seat 3 switches to the fixed mode.

[0233] In some alternative embodiments, the positions of the ratchet portion 4117 and the ratchet groove portion 4711 on the wall of the limiting groove 411 and the driving wheel 471 can be interchanged. That is, the ratchet portion 4117 is disposed on the driving wheel 471, while the first ratchet groove 47111 and the second ratchet groove 47112 are disposed on the wall of the limiting groove 411. In this way, when the driving wheel 471 is subjected to the pressing force S and undergoes axial movement and circumferential rotation, the ratchet portion 4117 sequentially engages with the first ratchet groove 47111 and the second ratchet groove 47112 as the driving wheel 471 rotates, thereby similarly controlling the switching of the limiting member 43 between the first position and the second position.

[0234] See also Figure 38 and Figure 39 In some embodiments, the third swing locking mechanism 47 may further include a return spring 473. Thus, after each pressing of the pressing member 472, the return spring 473 drives the pressing member 472 back to its original position, so that the pressing member 472 returns to a position convenient for the next pressing.

[0235] See also Figure 38 、 Figure 39 and Figure 49In some embodiments, a hook portion 47222 may be provided at the end of each pushing arm. The axial distance between the pushing step 47221 and the hook portion 47222 is greater than the axial length of the drive wheel 471, and the drive wheel 471 is located between the pushing step 47221 and the hook portion 47222. The hook portion 47222 is used to hook the drive wheel 471 after the pressing force S is released, thereby limiting the reset movement distance of the pressing member 472 and preventing the pushing step 47221 from moving too far away from the drive wheel 471. This helps to reduce the next pressing stroke of the pressing member 472. In some embodiments, each pushing arm may also be provided with an external protruding finger 47223. The external protruding finger 47223 is located in the limiting groove 411 and is limited by the groove bottom 41102, which can prevent the pressing member 472 from detaching from the fixing member 41.

[0236] See also Figure 40 and Figure 47 A protruding ring 4713 is provided on the side of the driving wheel 471 facing the force plate 435. The outer diameter of the protruding ring 4713 is smaller than the outer diameter of the driving wheel 471. The gap between the outer periphery of the protruding ring 4713 and the outer periphery of the driving wheel 471 is provided for the hook portion 47222 to hook, and the protruding ring 4713 and the force plate 435 are kept in contact with each other.

[0237] See also Figure 37 and Figure 40 In some embodiments, a limiting recess 1701 is formed on the exterior of the third mounting housing 17. The limiting recess 1701 includes a first limiting wall 17011 and a second limiting wall 17012. The swing arm 21 swings between the first limiting wall 17011 and the second limiting wall 17012. The first limiting wall 17011 and the second limiting wall 17012 also serve to limit the swing angle of the swing arm 21. In some embodiments, a limiting recess 1702 may also be formed on the exterior of the third mounting housing 17. The limiting recess 1702 corresponds to the auxiliary swing arm 29. The limiting recess 1702 includes a third limiting arm 17021 and a fourth limiting arm 17022. The auxiliary swing arm 29 swings between the third limiting arm 17021 and the fourth limiting arm 17022. The third limiting arm 17021 and the fourth limiting arm 17022 serve to limit the swing angle of the auxiliary swing arm 29.

[0238] In addition, in some alternative embodiments, the third swing locking mechanism 47 may not be configured, and the first swing locking mechanism 6 in the above-mentioned first embodiment may be configured in the third mounting shell 17, or the swing of the swing arm 21 may be locked to switch the seat 3 from the swing mode to the fixed mode.

[0239] It should be noted that, although in the above embodiment, the swing limiting mechanism 4 is disposed between the swing arm 21 and the main frame 1, in other embodiments, the swing limiting mechanism 4 may be disposed between the auxiliary swing arm 29 and the main frame 1. Furthermore, in some alternative embodiments, the swing limiting mechanism 4 may not be disposed on the support tube 11, as long as the main frame 1 has any structure capable of positioning the fixing member 41.

[0240] In addition, the parallel swing arm 21 and auxiliary swing arm 29 provided in this embodiment can also be applied to the child carriers provided in the first and second embodiments above, so that the seat 3 remains horizontal when swinging in the swing mode.

[0241] This embodiment also provides a swing mechanism, which includes the aforementioned fixing member 41, swing arm 21, and abutment member 42. The following mainly describes the differences between the swing mechanism in this embodiment and the swing mechanism in the first embodiment, and the similarities or similarities between the two are not repeated here.

[0242] The limiting groove 411 of the fixing member 41 extends in a direction parallel to the axial direction of the pivot 211. A limiting member 43 is provided in the limiting groove 411 of the fixing member 41. More specifically, the limiting member 43 is, for example, a plate member and is inserted into the limiting groove 411 of the fixing member 41. The position of the limiting member 43 within the limiting groove 411 is adjustable. The limiting member 43 includes a first region 43a and a second region 43b. The first region 43a has a first limiting surface 4111 and a second limiting surface 4112. The second region 43b is adapted to engage with the abutment 42 to lock the swing arm 21. The limiting member 43 slidably engages with the limiting groove 411 and has a first position and a second position. When the limiting member 43 is in the first position, the first region 43a engages with the abutment 42, allowing the swing arm 21 to swing within a predetermined angular range. When the limiting member 43 is in the second position, the second region 43b engages with the abutment 42, locking the swing arm 21 so that it cannot swing. The implementation of the limiting member 43 and the abutting member 42 can refer to the above description.

[0243] The swing mechanism may also be configured with the aforementioned third swing locking mechanism 47 and the third elastic element 46 to adjust the position of the limiting member 43 in the limiting groove 411 .

[0244] The swing mechanism allows the swing arm 21 to swing within a preset angle range, and can also lock the swing arm 21 so that the swing arm 21 does not swing.

[0245] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0246] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A swing mechanism, characterized in that: include: A fixing member, wherein the fixing member is provided with a first limiting surface and a second limiting surface; a swing arm having a pivot, wherein the pivot is pivotable relative to the fixed member; An abutment member is connected to the pivot and is located between the first limiting surface and the second limiting surface. The abutment member limits the swing angle of the swing arm by abutting against the first limiting surface and the second limiting surface.

2. The swing mechanism according to claim 1, characterized in that: The fixing member is provided with a limiting groove; The first limiting surface and the second limiting surface are formed on the side walls of the limiting groove; or, a limiting member is provided in the limiting groove, and the first limiting surface and the second limiting surface are formed on the limiting member.

3. The swing mechanism according to claim 2, characterized in that: The extending direction of the limiting groove is perpendicular to the axial direction of the pivot, and the limiting groove has a notch; The sidewall of the limiting groove includes a first sidewall and a second sidewall parallel to each other, and the first limiting surface and the second limiting surface are formed on the first sidewall and the second sidewall; The abutment member is inserted into the limiting groove through the notch and includes a first pair of parallel surfaces and a second pair of parallel surfaces; When the first pair of parallel surfaces swings to abut against the first limiting surface, the swing arm is restricted from continuing to swing in the first direction; and when the second pair of parallel surfaces swings to abut against the second limiting surface, the swing arm is restricted from continuing to swing in the second direction, and the first direction is opposite to the second direction.

4. The swing mechanism according to claim 2, wherein: The extending direction of the limiting groove is perpendicular to the axial direction of the pivot, and the position of the limiting member in the limiting groove is adjustable; The limiting member has an opening for the pivot to pass through, and the opening includes a first hole portion and a second hole portion; the first hole portion includes a first wall and a second wall, the first limiting surface and the second limiting surface are formed on the first wall and the second wall, and the second hole portion is used to engage with the abutment member to lock the swing arm.

5. The swing mechanism according to claim 2, characterized in that: The extending direction of the limiting groove is parallel to the axial direction of the pivot; The limiting member includes a first area and a second area, the first area has the first limiting surface and the second limiting surface, and the second area is suitable for engaging with the abutment member to lock the swing arm; The limiting member is slidably engaged with the limiting groove and has a first position and a second position. When the limiting member is in the first position, the first area is engaged with the abutting member. When the limiting member is in the second position, the second area is engaged with the abutting member.

6. The swing mechanism according to claim 5, characterized in that: The limiting member includes a force-bearing plate and at least one arm extending from the force-bearing plate, and the first area and the second area are formed on the at least one arm; The outer periphery of the abutment member is provided with at least one first slot, the at least one arm body passes through the at least one first slot, and the first area is adapted to swing in the corresponding first slot; The abutment member is further provided with at least one second groove portion, and the second area is adapted to engage with a corresponding second groove portion.

7. The swing mechanism according to claim 6, characterized in that: The swing mechanism further includes a third swing locking mechanism, the third swing locking mechanism includes a driving wheel, the driving wheel is mounted on the pivot and abuts against the force-bearing plate; One of the wall of the limiting groove and the driving wheel is provided with a ratchet portion, and the other is provided with a ratchet groove portion, and the ratchet groove portion is provided with a first ratchet groove with a first groove depth and a second ratchet groove with a second groove depth in sequence in the circumferential direction, and the first groove depth is not equal to the second groove depth; when the driving wheel is subjected to pressing force, it moves axially and rotates circumferentially, so that the ratchet portion engages with the first ratchet groove and the second ratchet groove in sequence.

8. A seat connection structure, characterized in that: include: The support frame includes a first support rod and a second support rod arranged opposite to each other; A first positioning groove and a second positioning groove are provided on a first surface of a seat, the first positioning groove accommodates the first support rod, and the second positioning groove accommodates the second support rod; and The locking device includes a first stopper, a second stopper and an elastic element; the first stopper and the second stopper are both slidably matched with the seat, and the elastic element is used to drive the first stopper and the second stopper to a locking position.

9. The seat connection structure according to claim 8, characterized in that: The second surface of the seat is provided with a first slide groove and a second slide groove, the first slide groove intersects with the first positioning groove, and the second slide groove intersects with the second positioning groove; the second surface of the seat and the first surface of the seat face away from each other; The first stopper is slidably disposed in the first sliding groove, and the second stopper is slidably disposed in the second sliding groove.

10. The seat connection structure according to claim 9, characterized in that: The seat is further provided with a third slide groove, and the first slide groove and the second slide groove are communicated with each other through the third slide groove; The locking device further includes a connecting frame; wherein the connecting frame is disposed in the third sliding slot, and both ends of the connecting frame are respectively provided with a first surface and a second surface that are bent downward relative to the connecting frame, the first stopper is connected to the first surface, and the second stopper is connected to the second surface; A fourth elongated hole is provided on the bottom wall of the third sliding groove, a fastener is installed on the connecting frame, and a first end of the fastener passes through the fourth elongated hole.

11. The seat connection structure according to claim 10, characterized in that: The first surface of the seat is further provided with a fourth slide groove, the third slide groove and the fourth slide groove are adjacent to each other in the extending direction of the fastener, and the fourth slide groove is located between the first slide groove and the second slide groove; The locking device further includes a third release member, the third release member is accommodated in the fourth sliding groove, and the first end of the fastener is connected to the third release member; The elastic element is clamped between the side wall of the fourth sliding groove and the third releasing member.

12. The seat connection structure according to claim 11, characterized in that: The first end of the third release member has a first receiving groove, the first receiving groove is used to receive the end of the elastic element, and the second end of the third release member is provided with a pressing recess; A shield is provided in a partial area of ​​the fourth sliding groove, and the shield shield blocks the elastic element.

13. The seat connection structure according to claim 8, characterized in that: The locking device also includes a second linkage, which is operably connected to the first stopper and the second stopper, wherein when one of the first stopper and the second stopper is pushed to release one of the first support rod and the second support rod, under the action of the second linkage, the other of the first stopper and the second stopper is pushed to release the other of the first support rod and the second support rod.

14. The seat connection structure according to claim 13, characterized in that: The second surface of the seat is provided with a main slide groove, and the main slide groove intersects with the first positioning groove and the second positioning groove respectively; the second surface of the seat and the first surface of the seat face away from each other; The first stopper and the second stopper are slidably disposed in the main slide groove.

15. The seat connection structure according to claim 14, characterized in that: The first end of the first stopper and the first end of the second stopper, which are away from each other, are used to lock the first support rod and the second support rod respectively; A first connecting protrusion and a second connecting protrusion are respectively provided at the second end of the first stopper and the second end of the second stopper which are close to each other; The second linking member is a rod, a first end of the second linking member is pivotally connected to the first connecting protrusion, and a second end of the second linking member is pivotally connected to the second connecting protrusion.

16. The seat connection structure according to claim 15, characterized in that: The elastic element includes a first spring and a second spring; the first spring is arranged between the end of the first connecting protrusion and the second stopper, and the second spring is arranged between the end of the second connecting protrusion and the first stopper.

17. The seat connection structure according to claim 15 or 16, characterized in that: The first end of the second linking member is provided with a first protrusion, and the second end is provided with a second protrusion; The first connecting protrusion is provided with a fifth elongated hole that is slidably engaged with the first protrusion, and the second connecting protrusion is provided with a sixth elongated hole that is slidably engaged with the second protrusion; The first connecting protrusion is provided with a first recess, the first end of the second linking member is embedded in the first recess, and the first protrusion passes through the first recess and enters the fifth elongated hole; The second connecting protrusion is provided with a second recess, the second end of the second linking member is embedded in the second recess, and the second protrusion passes through the second recess and enters the sixth elongated hole.

18. The seat connection structure according to claim 14, wherein: The side wall of the main chute is provided with a first wedge block and a second wedge block, the first wedge block is used to press the first stopper, and the second wedge block is used to press the second stopper; And / or, the first end portion of the first stopper and the first end portion of the second stopper, which are far away from each other, are respectively provided with a pushing inclined surface.

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