CN114212138B - Linkage unlocking mechanism for folding frame and seat frame and folding child cart - Google Patents
Linkage unlocking mechanism for folding frame and seat frame and folding child cart Download PDFInfo
- Publication number
- CN114212138B CN114212138B CN202111607903.2A CN202111607903A CN114212138B CN 114212138 B CN114212138 B CN 114212138B CN 202111607903 A CN202111607903 A CN 202111607903A CN 114212138 B CN114212138 B CN 114212138B
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- frame
- unlocking
- locking
- seat frame
- linkage
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- 238000001125 extrusion Methods 0.000 claims description 19
- 210000003781 tooth socket Anatomy 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The invention belongs to the technical field of child carts, and particularly discloses a frame and seat frame folding linkage unlocking mechanism and a child cart. The invention not only effectively simplifies folding operation, but also is more convenient for people to use; and each part has compact structure, reasonable design and strong linkage.
Description
Technical Field
The invention relates to the technical field of kids, in particular to a frame and seat frame folding linkage unlocking mechanism and a child stroller.
Background
The folding baby carriage is marketed, brings very good experience for each user, and solves the problem of inconvenient carrying when going out. The prior art folding child cart generally includes a frame, a seat frame, and the like, wherein the frame and the seat frame are folded individually, and each needs to perform an unlocking operation before folding, which is very cumbersome.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the frame and seat frame folding linkage unlocking mechanism and the child trolley which are more reasonable in structural design and convenient to unlock.
In order to achieve the above purpose, one of the technical schemes adopted by the invention is as follows: the linkage unlocking mechanism is characterized in that the seat frame joint comprises a seat frame fixing arm and a backrest frame rotating arm, wherein a locking disc is fixedly connected to the inner side of the seat frame fixing arm, and the locking disc and the locking gear are mutually locked; the unlocking turntable, the locking disc, the locking gear and the inner tooth socket disc are coaxially arranged, the unlocking turntable is assembled between the locking disc and the locking gear, and the unlocking turntable performs relative rotation motion relative to the locking disc and the locking gear; a plurality of unlocking holes are formed in the unlocking rotary table along the circumferential direction of the unlocking rotary table, a pulling pin is fixed at the lower part of one side of the unlocking rotary table, a steel wire rope is fixedly connected to the pulling pin, and the unlocking rotary table is driven to rotate by pulling the steel wire rope; correspondingly, a plurality of guide inclined planes are processed on the surface of the locking gear, which is matched with the unlocking turntable, each guide inclined plane passes through the corresponding unlocking hole, the locking gear is embedded in the inner tooth socket disc, and the inner tooth socket disc is fixedly connected with the rotating arm of the backrest frame; an extrusion slot hole is formed in the inner tooth socket plate, and a linkage lower pressing block extends into the extrusion slot hole;
The frame joint comprises a push handle rotating arm, an unlocking linkage block, a movable locking piece and a fixed locking piece, wherein the push handle rotating arm is coaxially and fixedly connected with the fixed locking piece; the unlocking linkage block is positioned right below the linkage lower pressing block and is in up-and-down limiting locking with the rotating arm of the pushing hand; the movable locking piece is limited on the pushing arm rotating arm and moves up and down along the pushing arm rotating arm; a first clamping column is processed on one side of the movable locking piece, and the first clamping column is locked with the unlocking linkage block in an up-and-down limiting way; a second clamping column and a third clamping column are processed on the other side of the movable locking piece; correspondingly, a first locking slot hole and a first unlocking arc slot hole which are used for the second clamping column to pass through are formed in the fixed locking piece, the first locking slot hole is communicated with the first unlocking arc slot hole, a second locking slot hole and a second unlocking arc slot hole which are used for the third clamping column to pass through are also formed in the fixed locking piece, and the second locking slot hole is communicated with the second unlocking arc slot hole; after the unlocking linkage block is pressed down, the unlocking linkage block is unlocked with the push handle rotating arm, and pushes the movable locking piece to slide downwards until the second clamping column and the third clamping column are separated from the corresponding locking slotted holes and enter the unlocking arc-shaped slotted holes, so that unlocking is realized.
Further, a first housing is fixedly connected to one side of the inner spline plate, and a first return spring is fixedly connected between the first housing and the locking gear. The first return spring is arranged to enable the locking gear to return to a position locked with the locking disc.
Further, another extrusion slot hole for the handrail locking linkage block to pass through is also formed in the inner tooth groove plate, the inner wall of the extrusion slot hole is designed into an inclined plane, specifically, the contact surface of the extrusion slot hole and the handrail locking linkage block is an inclined plane, and the handrail locking linkage block is fixedly connected with a return block; the seat frame fixing arm is hinged with a handrail frame rotating arm, and the return block and the handrail frame rotating arm are mutually limited and locked. Through this scheme design, can realize the mutual locking between handrail frame rotor arm and the internal tooth groove, further realize the linkage that handrail frame rotor arm received and closed.
Further, two lock clamping grooves are formed in the periphery of the inner tooth groove plate, two lock buttons are limited on the seat frame fixing arm, a third spring is fixedly connected between the two lock buttons and the seat frame fixing arm, two lock blocks are fixedly connected to the two lock buttons, and the two lock blocks and the two lock clamping grooves are in limiting locking with each other. The design of the two locks can further realize the stability and safety of the child stroller.
Further, a limiting tooth protruding out of the corresponding surface of the locking disc is formed on the locking disc and towards one side of the locking gear; correspondingly, a limiting groove is formed in the periphery of the locking gear and corresponds to the position of the limiting tooth, and the locking disc is inserted into the limiting groove through the limiting tooth so as to realize transverse limiting locking of the locking disc and the locking gear.
Further, a second shell is fixedly connected to one side of the push handle rotating arm, a vertical linkage block guide groove is formed in the second shell and faces one side of the unlocking linkage block, and the top and the bottom of the linkage block guide groove and one side of the movable locking piece are opened; the unlocking linkage block passes through the linkage block guide groove from top to bottom. The design scheme realizes up-and-down guiding of the unlocking linkage block.
Further, an upper limit groove and a lower limit groove are formed on one side of the rotating arm of the pushing arm, correspondingly, an upper extension part and a lower extension part which are respectively matched with the upper limit groove and the lower limit groove are formed on the top and the bottom of the movable locking piece, and the top and the bottom of the movable locking piece are limited in the upper limit groove and the lower limit groove of the rotating arm of the pushing arm; a center post is fixedly connected to the center of the rotating arm of the pushing arm and faces the side face of the movable locking piece, correspondingly, a waist-shaped hole is formed in the center of the movable locking piece, and the waist-shaped hole of the movable locking piece is sleeved on the center post, so that the movable locking piece can only move up and down along the center post. The design scheme realizes that the movable locking piece can only perform up-and-down motion.
The invention also provides another technical scheme, namely a folding child trolley, which comprises the linkage unlocking mechanism for folding the frame and the seat frame, the frame and the seat frame.
The frame comprises a push handle frame, a front wheel frame and a rear wheel frame, wherein the push handle frame is in an inverted U shape, the two ends of the bottom of the push handle frame are respectively hinged with the front wheel frame, and the two ends of the push handle frame, which are close to the bottom, are rotatably connected with the two rear wheel frames through two frame joints; the seat frame comprises a backrest frame, an armrest frame and a seat frame, wherein the backrest frame is also in an inverted U shape, the two ends of the bottom of the backrest frame are rotatably connected with the seat frame through two seat joints, and the armrest frame is hinged on the seat frame.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the frame joint and the seat joint are unlocked through linkage, so that the folding operation can be effectively simplified, and the use of people is more convenient; and each part has compact structure, reasonable design and strong linkage.
Drawings
FIG. 1 is a schematic view of the overall structure of a stroller according to the present invention;
FIG. 2 is a schematic diagram of an unlocking structure according to the present invention;
FIG. 3 is a schematic view of a seat joint structure according to the present invention;
Fig. 4 is a schematic diagram of an unlocking turntable according to the present invention;
FIG. 5 is a schematic view of a locking gear structure according to the present invention
FIG. 6 is a schematic diagram of a locking linkage structure of an inner toothed disc and a handrail frame according to the present invention;
Fig. 7 is a schematic diagram of the structure of the inner gear groove disc, unlocking turntable, locking gear and the like according to the present invention;
FIG. 8 is a schematic cross-sectional view of a frame joint structure in accordance with the present invention;
FIG. 9 is a diagram of the mating relationship of the unlocking linkage block, the first clamping column and the like according to the invention;
FIG. 10 is a diagram showing the mating relationship of the movable locking piece, the fixed locking piece, etc. according to the present invention;
Wherein 1, push handle frame, 2, front wheel frame, 3, rear wheel frame, 4, backrest frame, 5, armrest frame, 6, seat frame, 7, seat joint, 8, frame joint, 9, seat frame fixed arm, 10, backrest frame rotating arm, 11, armrest frame rotating arm, 12, push handle rotating arm, 13, wheel fixed arm, 14, wheel rotating arm, 15, locking disk, 15.1, limit tooth, 16, unlocking turntable, 16.1, unlocking hole, 16.2, traction pin, 17, locking gear, 17.1, guiding slope, 18, inner tooth groove disk, 19, first housing, 20, first return spring, 21, first extrusion groove, 22, second extrusion groove, 23, linkage lower press block, 24, unlocking linkage block, 25, movable locking piece, 26, fixed locking piece, 26.1, first locking piece, 26.2, first unlocking arc, 26.3, second locking groove, 26.4, second arc, 27, first clamping housing, 28, second clamping block, 29, second clamping block, 31, second clamping block, second groove, 32, groove hole, 32, locking block, groove hole, 32, locking groove hole, locking groove, 32.
Detailed Description
The invention will now be further elucidated with reference to the drawings. The following is a most preferred embodiment of the present invention, but it is not limited to the scope of the invention, and any equivalents or similar substitutions without departing from the spirit of the present invention shall fall within the scope of the present invention. In addition, the terms "fixedly connected" and "fixed" are used in the prior art, such as conventional fixing methods, such as bolting, welding, etc.; the directions of the children are described in the text, such as "inner", "outer", "upper", "lower", etc., which are close to the center of the stroller, whereas the directions are outward, and the upper part of the stroller is upper and lower after sitting on the stroller. And parts not described in detail below should be performed as in the prior art.
As shown in fig. 1 to 10, the folding child stroller of the present invention comprises a frame and a seat frame, wherein the frame comprises a push handle frame 1, a front wheel frame 2 and a rear wheel frame 3, the push handle frame 1 is in an inverted U shape, two ends of the bottom of the push handle frame 1 are respectively hinged with a front wheel frame 2 (specifically, the end parts of the front wheel frame are called as wheel rotating arms 14), and two ends of the push handle frame 1 near the bottom (called as push handle rotating arms 12) are rotatably connected with two rear wheel frames 3 (specifically, wheel fixing arms 13 fixedly connected with the end parts of each rear wheel frame 3) through two frame joints 8; the seat frame comprises a backrest frame 4, an armrest frame 5 and a seat frame 6, wherein the backrest frame 4 is also in an inverted U shape, two ends of the bottom of the backrest frame 4 (called as backrest frame rotating arms 10) are rotatably connected with the seat frame 6 (specifically, a seat frame fixing arm 9 and fixedly connected with the end part of the seat frame 6) through two seat joints 7, and the armrest frame 5 (specifically, an armrest frame rotating arm 11 and fixedly connected with the two end parts of the armrest frame 5) is hinged on the seat frame 6 (specifically, the seat frame fixing arm 9).
The seat joint 7 comprises a seat frame fixing arm 9, a backrest frame rotating arm 10, a locking disc 15, an unlocking rotary disc 16, a locking gear 17 and an internal tooth groove disc 18, wherein the locking disc 15, the unlocking rotary disc 16, the locking gear 17 and the internal tooth groove disc 18 are coaxially arranged; a locking disc 15 is fixedly connected to the inner side of the seat frame fixing arm 9, a limit tooth 15.1 protruding out of the corresponding surface of the locking disc 15 is formed on one side of the locking disc 15 facing the locking gear 17 (specifically, a limit tooth 15.1 can be formed at the upper part or a limit tooth 15.1 is formed at the upper part and the lower part), correspondingly, a limit groove is formed at the periphery of the locking gear 17 and at the position corresponding to the limit tooth 15.1, and the limit tooth 15.1 of the locking disc 15 stretches into the limit groove to realize transverse limit locking; a mounting groove is formed in one side, facing the unlocking turntable 16, of the locking gear 17, the unlocking turntable 16 is arranged in the mounting groove, and the unlocking turntable 16 rotates relative to the locking disk 15 and the locking gear 17; a plurality of unlocking holes 16.1 are formed in the unlocking turntable 16 along the circumferential direction of the unlocking turntable, a traction pin 16.2 is fixedly connected below one side of the unlocking turntable 16, one end of the traction pin 16.2 is fixedly connected with a steel wire rope, the steel wire rope penetrates through the backrest frame 4 and is fixedly connected to a button which is arranged at the top of the backrest frame 4 in a conventional manner, and the steel wire rope is pulled by pulling the button, so that the traction pin 16.2 is pulled, and the unlocking disk 15 rotates; a plurality of guide inclined planes 17.1 are processed on the side surface of the locking gear 17, which is matched with the unlocking rotary table 16, the top of each guide inclined plane 17.1 passes through the corresponding unlocking hole 16.1, when the unlocking disc 15 is pulled to rotate, the unlocking hole 16.1 presses the guide inclined plane 17.1, so that the locking gear 17 moves back transversely, the limit teeth 15.1 on the locking disc 15 are disengaged from the limit grooves on the locking gear 17, and unlocking is realized between the locking gear 17 and the locking disc 15; the center of the inner tooth groove disc 18 is provided with a plurality of tooth grooves along the circumferential direction on the inner wall of the hole, the teeth on the periphery of the locking gear 17 are meshed with the tooth grooves formed in the inner tooth groove disc 18, the inner tooth groove disc 18 is fixedly connected to the backrest frame rotating arm 10, and after the locking gear 17 and the locking disc 15 are unlocked, the backrest frame rotating arm 10 can rotate relative to the seat frame fixing arm 9; in order that the locking gear 17 can be locked again with the locking disk 15 in use, a first housing 19 is fixedly connected to the inner side of the inner cogging disk 18, and a first return spring 20 is fixedly connected between the first housing 19 and the locking gear 17.
The invention also forms a second locking slot 31 on the periphery of the inner tooth groove disk 18, a second locking button 32 is limited on the seat frame fixing arm 9, a third spring is fixedly connected between the second locking button 32 and the seat frame fixing arm 9, a second locking block 33 is fixedly connected on the second locking button 32, and the second locking block 33 and the second locking slot 31 realize up-and-down limiting locking. The folding and folding seat frame has a two-channel locking function, so that the stability of the child stroller is further improved.
The invention provides a first extrusion slotted hole 21 on an inner slot plate 18, the inner wall surface of a second extrusion slotted hole 21 is designed into an inclined plane, a handrail locking linkage block 34 is stretched into the first extrusion slotted hole 21, the handrail locking linkage block 34 is fixedly connected to a return block 35, the other end of the return block 35 and a handrail frame rotating arm 11 realize limit locking in the inner and outer directions (namely, a limit tooth is integrally formed on the inner side of the return block, a clamping groove matched with the limit tooth is formed on the outer side of the handrail frame rotating arm 11), and a return spring is fixedly connected between the return block 35 and a seat frame fixing arm 9. Through the rotation of the inner tooth groove plate 18, the first extrusion groove hole 21 extrudes the armrest locking linkage block 34 to move outwards to separate from the second extrusion groove hole 21, and in the process of pushing the armrest locking linkage block 34 outwards, the backstop block 35 is driven to move outwards, so that the backstop block 35 and the armrest frame rotating arm 11 are unlocked, and the armrest frame rotating arm 11 can drive the armrest frame 5 to rotate and fold relative to the seat frame fixing arm 9.
A second extrusion slotted hole 22 is formed in the inner toothed groove disc 18, wherein a part of a linkage lower pressing block 23 extends into the second extrusion slotted hole 22 from outside to inside; when the inner gear groove disc 18 rotates clockwise following the backrest frame rotating arm 10, the second extrusion groove hole 22 extrudes the linkage lower pressing block 23 to move downwards, and the other part of the linkage lower pressing block 23 extrudes the unlocking linkage block 24 downwards, so that the linkage lower pressing block 23 is in an inverted L shape as a whole.
The frame joint 8 comprises a push-handle rotating arm 12, an unlocking linkage block 24, a movable locking piece 25 and a fixed locking piece 26, wherein the push-handle rotating arm 12 and the fixed locking piece 26 are coaxially and fixedly connected. The unlocking linkage block 24 is positioned right below the linkage lower pressing block 23, a bulge with an upward free end is formed on one side of the unlocking linkage block 24, correspondingly, a clamping groove with a downward opening is formed on the push handle rotating arm 12 corresponding to the bulge, and the unlocking linkage block 24 and the push handle rotating arm 12 realize upper and lower limiting locking through the bulge and the clamping groove; an upper limit groove (an opening at the bottom and at one side close to the unlocking linkage block) and a lower limit groove (an opening at the bottom and at one side close to the unlocking linkage block) are formed on one side of the push handle rotating arm 12, correspondingly, an upper extension part matched with the upper limit groove and a lower extension part matched with the lower limit groove are formed at the top and the bottom of the movable locking piece 25 respectively, and the top and the bottom of the movable locking piece 15 are limited in the upper limit groove and the lower limit groove of the push handle rotating arm 12; a center post is fixedly connected to the center of the push handle rotating arm 12 and the side surface facing the movable locking piece 25, correspondingly, a waist-shaped hole is formed in the center of the movable locking piece 25, the length direction of the waist-shaped hole extends along the up-down direction, and the waist-shaped hole of the movable locking piece 12 is sleeved on the center post, so that the movable locking piece 12 can only move up and down along the center post when moving; a first clamping post 27 is fixedly connected to the movable locking plate 25 and faces the lower part of the side face of the unlocking linkage block 24, and correspondingly, a fork opening (arc shape) is formed at the bottom of the unlocking linkage block 24, and the fork opening at the bottom of the unlocking linkage block 24 is matched with the first clamping post 27 so as to realize the up-and-down limiting of the unlocking linkage block 24 and the movable locking plate 25; in order to facilitate the up-and-down guiding of the unlocking linkage block 24, a second shell 28 is fixedly connected to the inner side of the push handle rotating arm 12, a vertical linkage block guide groove (top, bottom, right side opening in fig. 8) is formed on one side of the unlocking linkage block 24 facing the second shell 28, and the unlocking linkage block 24 passes through the linkage block guide groove from top to bottom; a second locking post 29 and a third locking post 30 are respectively and fixedly connected to the upper part and the lower part of the other side of the movable locking piece 25, correspondingly, a first locking slot 26.1 (circular) and a first unlocking arc slot 26.2 (particularly, arc slots matched with the rotation direction of the fixed locking piece 26) for the second locking post 29 to pass through are formed in the upper part of the fixed locking piece 26, the first locking slot 26.1 is communicated with the first unlocking arc slot 26.2, a second locking slot 26.3 and a second unlocking arc slot 26.4 for the third locking post 30 to pass through are also formed in the lower part of the fixed locking piece 26, and the second locking slot 26.3 (circular) is communicated with the second unlocking arc slot 26.4; the stationary locking tab 26 is fixedly attached to the push handle pivot arm 12. After the unlocking linkage block 24 is pressed down, the unlocking linkage block is unlocked with the push handle rotating arm 12, when the fork opening at the bottom of the unlocking linkage block 24 is clamped on the first clamping post 27, the movable locking piece 25 is pushed to slide down until the second clamping post 29 and the third clamping post 30 are separated from the corresponding locking slotted holes on the fixed locking piece 26 and enter the unlocking arc slotted holes to realize unlocking, and at the moment, the fixed locking piece 26 can rotate and retract relative to the rear wheel frame 3 under the drive of the push handle rotating arm 12.
The invention has the advantages that the seat joint, the frame joint and the like with linkage function are arranged, the frame joint can be unlocked while the seat joint is rotated after being unlocked, the unlocking operation in the folding and folding process can be effectively simplified, and the invention is convenient for people to use.
Claims (9)
1. The linkage unlocking mechanism for folding the frame and the seat frame comprises a seat frame joint and a frame joint, and is characterized in that the seat frame joint comprises a seat frame fixing arm, a backrest frame rotating arm, a locking disc, an unlocking turntable, a locking gear and an internal tooth groove disc; wherein, one side of the seat frame fixing arm is fixedly connected with a locking disc, and the locking disc and the locking gear are mutually locked; the unlocking turntable is assembled between the locking disc and the locking gear, specifically, a mounting groove is formed in one side, facing the unlocking turntable, of the locking gear, the unlocking turntable is arranged in the mounting groove, and the unlocking turntable performs relative rotation motion relative to the locking disc and the locking gear; a plurality of unlocking holes are formed in the unlocking rotary table along the circumferential direction of the unlocking rotary table, and a pulling pin is fixed on the unlocking rotary table; correspondingly, a plurality of guide inclined planes are processed on the surface of the locking gear, which is matched with the unlocking turntable, each guide inclined plane passes through the corresponding unlocking hole, the locking gear is embedded in the inner tooth socket disc, and the inner tooth socket disc is fixedly connected with the rotating arm of the backrest frame; an extrusion slot hole is formed in the inner tooth socket plate, and a linkage lower pressing block extends into the extrusion slot hole; the frame joint comprises a push handle rotating arm, an unlocking linkage block, a movable locking piece and a fixed locking piece, wherein the push handle rotating arm is coaxially and fixedly connected with the fixed locking piece; the unlocking linkage block is positioned right below the linkage lower pressing block and is in up-and-down limiting locking with the rotating arm of the pushing hand; the movable locking piece is limited on the pushing arm rotating arm and moves up and down along the pushing arm rotating arm; a first clamping column is processed on one side of the movable locking piece, and the first clamping column is locked with the unlocking linkage block in an up-and-down limiting way; a second clamping column and a third clamping column are processed on the other side of the movable locking piece; correspondingly, a first locking slot hole and a first unlocking arc slot hole which are used for the second clamping column to pass through are formed in the fixed locking piece, the first locking slot hole is communicated with the first unlocking arc slot hole, a second locking slot hole and a second unlocking arc slot hole which are used for the third clamping column to pass through are also formed in the fixed locking piece, and the second locking slot hole is communicated with the second unlocking arc slot hole; after the unlocking linkage block is pressed down, the unlocking linkage block is unlocked with the push handle rotating arm, and pushes the movable locking piece to slide downwards until the second clamping column and the third clamping column are separated from the corresponding locking slotted holes and enter the unlocking arc-shaped slotted holes, so that unlocking is realized.
2. The interlocking unlocking mechanism for folding a frame and a seat frame according to claim 1, wherein a first housing is fixedly connected to one side of the inner spline plate, and a first return spring is fixedly connected between the first housing and the locking gear.
3. The linkage unlocking mechanism for folding the frame and the seat frame according to claim 2, wherein the inner tooth socket plate is also provided with another extrusion slot hole for the handrail locking linkage block to pass through, the inner wall of the extrusion slot hole is designed into an inclined plane, and the handrail locking linkage block is fixedly connected with a return block; the seat frame fixing arm is hinged with a handrail frame rotating arm, and the return block and the handrail frame rotating arm are mutually limited and locked.
4. The linkage unlocking mechanism for folding the frame and the seat frame according to claim 3, wherein a second lock clamping groove is formed on the periphery of the inner tooth groove plate, a second lock button is limited on the seat frame fixing arm, a third spring is fixedly connected between the second lock button and the seat frame fixing arm, a second lock block is fixedly connected on the second lock button, and the second lock block and the second lock clamping groove are mutually limited and locked.
5. The interlocking unlocking mechanism for folding a frame and a seat frame according to claim 4, wherein a limiting tooth protruding out of the corresponding surface of the locking disc is formed on the locking disc and towards one side of the locking gear; correspondingly, a limiting groove is formed in the periphery of the locking gear and corresponds to the position of the limiting tooth, and the locking disc is inserted into the limiting groove through the limiting tooth so as to realize transverse limiting locking of the locking disc and the locking gear.
6. The linkage unlocking mechanism for folding the frame and the seat frame according to claim 1, wherein a second shell is fixedly connected to one side of the rotating arm of the push handle, a vertical linkage block guide groove is formed in the second shell and faces one side of the unlocking linkage block, and the top and the bottom of the linkage block guide groove and one side of the unlocking linkage block are opened; the unlocking linkage block passes through the linkage block guide groove from top to bottom.
7. The linkage unlocking mechanism for folding the frame and the seat frame according to claim 1, wherein an upper limit groove and a lower limit groove are formed on one side of the rotating arm of the pushing arm, correspondingly, an upper extension part and a lower extension part which are respectively matched with the upper limit groove and the lower limit groove are formed on the top and the bottom of the movable locking piece, and the top and the bottom of the movable locking piece are limited in the upper limit groove and the lower limit groove of the rotating arm of the pushing arm; a center post is fixedly connected to the center of the rotating arm of the pushing arm and faces the side face of the movable locking piece, correspondingly, a waist-shaped hole is formed in the center of the movable locking piece, and the waist-shaped hole of the movable locking piece is sleeved on the center post, so that the movable locking piece can only move up and down along the center post.
8. A folding child cart, comprising a frame and a seat frame, and further comprising a linkage unlocking mechanism for folding the frame and the seat frame according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7.
9. The folding child stroller of claim 8, wherein the frame comprises a push handle frame, a front wheel frame and a rear wheel frame, the push handle frame is of an inverted U shape, the front wheel frames are respectively hinged at two ends of the bottom of the push handle frame, and two ends of the push handle frame close to the bottom are rotatably connected with the two rear wheel frames through two frame joints; the seat frame comprises a backrest frame, an armrest frame and a seat frame, wherein the backrest frame is also in an inverted U shape, the two ends of the bottom of the backrest frame are rotatably connected with the seat frame through two seat joints, and the armrest frame is hinged on the seat frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607903.2A CN114212138B (en) | 2021-12-27 | 2021-12-27 | Linkage unlocking mechanism for folding frame and seat frame and folding child cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111607903.2A CN114212138B (en) | 2021-12-27 | 2021-12-27 | Linkage unlocking mechanism for folding frame and seat frame and folding child cart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114212138A CN114212138A (en) | 2022-03-22 |
| CN114212138B true CN114212138B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111607903.2A Active CN114212138B (en) | 2021-12-27 | 2021-12-27 | Linkage unlocking mechanism for folding frame and seat frame and folding child cart |
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