WO2021237783A1 - 儿童推车 - Google Patents
儿童推车 Download PDFInfo
- Publication number
- WO2021237783A1 WO2021237783A1 PCT/CN2020/094623 CN2020094623W WO2021237783A1 WO 2021237783 A1 WO2021237783 A1 WO 2021237783A1 CN 2020094623 W CN2020094623 W CN 2020094623W WO 2021237783 A1 WO2021237783 A1 WO 2021237783A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- stroller according
- rotating
- engaging
- locking
- Prior art date
Links
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
-
- 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
-
- 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
- B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
-
- 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
- B62B7/14—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor with detachable or rotatably-mounted body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
- B62B9/10—Perambulator bodies; Equipment therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
- B62B9/20—Handle bars; Handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
- B62B9/24—Safety guards for children, e.g. harness
Definitions
- This application relates to the field of children's products, in particular to a stroller with a seat that can rotate in situ.
- Some baby strollers have reversible seats for the convenience of taking care of children.
- plug-ins are provided on both sides of the seat, and sockets matching the plug-ins are correspondingly provided on the frame.
- the seat is removed from the frame.
- the plug-in can still be matched with the socket, and the seat can be installed on the frame.
- sockets and plug-ins are added, and the side structure of the frame is obviously more complicated.
- the seat is higher than the frame, resulting in a larger volume of the baby stroller after being folded.
- the seat needs to be changed when changing directions. The chair was removed, causing inconvenience in operation.
- the present application provides a child stroller with a seat that can be reversed in situ.
- a child stroller including a frame and a rotatable seat, the seat includes a rotating seat at the bottom, and an adapter seat matched with the rotating seat is provided on the frame, and the rotating seat can rotate around the seat The axis rotates relative to the adapter seat, so that the seat has at least two working positions with different orientations.
- the seat includes a rotating seat at the bottom and a folding bracket provided on the rotating seat, the folding bracket includes symmetrically arranged side frames, and each side frame includes:
- the front seat rod, the lower end is hinged with the front side of the rotating seat;
- the recoil rod the lower end of which is hinged with the rear side of the rotating seat
- a first link one end is hinged to the middle of the front seat rod, and the other end is hinged to the upper end of the recoil rod;
- the handle bar the lower end is hinged with the upper end of the front seat bar;
- a second connecting rod one end is hinged to the upper end of the recoil rod, and the other end is hinged to the lower end of the handlebar;
- the swivel seat, the front seat rod, the first link, and the rear seat rod constitute a first link mechanism that can be deformed with the folding bracket.
- the front seat rod, the handle bar, and the second A connecting rod and the second connecting rod constitute a second connecting rod mechanism capable of deforming with the folding bracket.
- a second locking mechanism for restricting mutual rotation between the adapter seat and the rotating seat is provided between the adapter seat and the rotating seat, and the second locking mechanism includes:
- At least two positioning holes are provided on the adapter seat
- a movable pin is arranged on the rotating seat, and the movable pin has an avoiding position retracted into the rotating seat and a working position protruding out of the rotating seat.
- the seat is at a preset position, the movable pin Cooperate with the positioning hole;
- One end of the traction cable is linked with the movable pin, and the other end is linked with the seat or the component on the frame.
- a third locking mechanism that restricts the rotation seat from being separated from the adapter seat is provided between the adapter seat and the rotating seat, and the third locking mechanism includes:
- the engaging part is arranged on the rotating seat
- a plurality of engaging blocks are arranged on the adapter seat and movable along the radial direction of the rotation axis of the seat, and each engaging block has an engaging position capable of matching with the engaging portion and withdrawing from the card The unlocking position of the joint;
- the unlocking member is slidably installed on the adapter seat, and the locking blocks are synchronously driven to the unlocking position through the inclined guide hole on the unlocking member;
- the retaining member is arranged between the rotating seat and the engaging block, and is used for holding the engaging block in the engaging position.
- the present application also provides a child stroller, including a frame and a seat, and a safety armrest is installed on the seat, and the safety armrest includes:
- the holding part is inserted into one end of the supporting sleeve
- the connecting part is inserted into the other end of the support sleeve, and the connecting part is adapted to the seat when in use;
- the tension member is located inside the support sleeve, and two ends of the tension member respectively pull the grip portion and the connecting portion.
- the seat and the vehicle frame are in rotation cooperation, and the seat can be reversed in situ relative to the vehicle frame, and the seat does not need to be removed for reversing, which simplifies the operation.
- Figures 1a to 1j are schematic diagrams of a child stroller in an embodiment
- Figures 2a to 2g are schematic diagrams of a child stroller in another embodiment
- Figures 3a to 3g are schematic diagrams of the installation of a child stroller in another embodiment
- 4a to 4d are schematic diagrams of a child stroller in another embodiment.
- the first locking mechanism 31, the locking member; 311, the driving slope; 312, the locking projection; 313, the locking groove; 314, the sliding groove; 32, the driving member; 33, the resetting member;
- Second locking mechanism 41, positioning hole; 42, movable pin; 421, pin head; 422, pulling part; 43, traction groove; 431, anti-falling piece; 44, reset elastic member; 45, mounting groove;
- the third locking mechanism 51. Clamping part; 511. Flange; 52. Clamping block; 521. Protrusion; 522. Clamping head; 523. Guide slope; 524. Stop surface; 53, Unlocking part 531. Operating part; 532. Linkage arm; 533. Guide oblique hole; 534. Guide bar hole; 54. Holder;
- Safety handrail 61, connecting part; 611, first limit step; 612, first slot; 62, holding part; 621, second limit step; 622, second slot; 63, support sleeve 64.
- a component when a component is said to be “connected” with another component, it can be directly connected to the other component or there may also be a central component. When a component is considered to be “installed on” another component, it can be directly installed on another component or a centered component may exist at the same time.
- rods are selected for reasons such as weight reduction or built-in pipelines.
- the core purpose is to transmit torque and support the relationship between the frame 1. Therefore, the rods in this article can also have multiple The realization form is conducive to hollow pipe fittings and other components that can support multi-directional moments to resist tension, compression and bending.
- the articulation, rotating connection, etc. mentioned in this application are realized by common technical means in the art without special description, for example, the components are sequentially stacked in the axial direction at the pivot position and are matched by the pivot.
- the pivot can be a separate component, or it can be an integral structure with one of the components.
- the front-rear relationship expressed in this application refers to the front-rear relationship when the stroller is pushed forward, and is not limited to the front-rear relationship in the absolute direction.
- the front-rear relationship is the seat 2 The concept of positive time.
- the front seat rod 222 is located on the front side of the rear seat rod 223; when the seat 2 is reversed, the front seat rod 222 is located on the rear side of the rear seat rod 223; for another example, when the seat 2 is facing forward, when the user When standing behind the stroller and pulling force to drive the stroller back, the front seat bar 222 is located at the rear side of the rear seat bar 223 in the traveling direction.
- a child stroller includes a frame 1 and a rotatable seat 2.
- the seat 2 includes a rotating seat 21 at the bottom, and the frame 1 is provided with a rotating seat 21 matching
- the adapter seat 11, the rotating seat 21 can rotate relative to the adapter seat 11 around the seat rotation axis, as shown in Figs. 1b and 1c, by rotating the seat 2, the orientation of the seat 2 can be changed to meet different usage requirements.
- the frame 1 includes two symmetrically arranged side brackets, and the adapter seat 11 is arranged between the two side brackets.
- a single side bracket includes a front foot bar, a rear foot bar and a handle bar. The top of the front foot bar and the rear foot bar are pivotally connected, and wheels are installed at the bottom.
- the front wheel is a universal wheel, which is convenient for turning the cart. Set the connecting axis. The top of the rod is bent inwardly with the two hands to form a U-shaped rod.
- the bottom of the handle bar and the middle of the rear foot bar are inserted and fitted, and the connection is provided with a locking mechanism, and an armrest is provided between the bottom of the handle bar and the rear foot bar.
- a linkage rod is arranged between the bottom of the handle rod and the top of the front foot rod. It can be seen that the plane where the side bracket is located does not interfere with the seat, so the frame and seat can be folded together.
- the front part of the adapter seat is coaxially hinged with the armrest rod, the front foot rod, and the rear foot rod, and the rear part is hinged with the handle bar.
- the adapter seat can move closer to the plane where the rear foot rod is located to reduce the size. Cart volume.
- the side bracket structure can adopt any existing structure, and the installation method of the corresponding adapter seat 11 will also be adaptively changed.
- the seat 2 and the frame 1 are often foldable in situ.
- the seat 2 includes a rotating seat 21 at the bottom and a set
- the folding bracket 22 on the rotating seat 21 is rotatably matched with the frame 1 of the stroller.
- the folding bracket 22 includes symmetrically arranged side frames 221, and each side frame 221 includes:
- the front seat rod 222, the lower end is hinged with the front side of the rotating seat 21;
- the recoil rod 223, the lower end is hinged with the rear side of the rotating seat 21;
- One end of the first link 224 is hinged to the middle of the front seat rod 222, and the other end is hinged to the upper end of the rear seat rod 223;
- the handle bar 225 the lower end is hinged with the upper end of the front seat bar 222;
- One end of the second connecting rod 226 is hinged to the upper end of the recoil rod 223, and the other end is hinged to the lower end of the handle bar 225;
- the revolving seat 21, the front seat rod 222, the first connecting rod 224, and the rear seat rod 223 constitute a first connecting rod mechanism that can be deformed with the folding bracket 22.
- the front seat rod 222, the handle rod 225, the first connecting rod 224, and the second The connecting rod 226 constitutes a second connecting rod mechanism capable of deforming with the folding bracket 22.
- the first link mechanism and the second link mechanism share the first link 224 and the front seat rod 222 in structure. Therefore, the change in the spatial form of the first link mechanism will be synchronized to the second link mechanism.
- the folding and unfolding of the seat 2 is realized.
- the front seat rod 222 and the rear seat rod 223 need to be articulated with different axes when they are hinged with the rotating seat 21, that is, a single side of the rotating seat 21 is provided with a first hinge point and a second hinge point at different positions.
- the lower end is hinged with the first hinge point, and the lower end of the recoil rod 223 is hinged with the second hinge point.
- the rotating seat 21 is used to realize the front and rear rotation of the seat 2 relative to the frame 1, and the folding bracket 22 is used as a skeleton, mainly used to support the cloth cover and the awning, and has two states of folding and unfolding. It can be found that the entire seat is located in the space between the two side brackets of the frame, so the structure of the frame does not affect the folding of the folding bracket, and vice versa.
- the first link 224, the upper end of the rear seat rod 223, and the second link 226 are coaxially hinged; the handle bar 225 is provided with an extension extending in the direction of the front seat rod 222 The second connecting rod 226 is hinged with the handle bar 225 through the extension part 2251.
- the first link 224 Since the two link mechanisms share the first link 224, the first link 224 will be connected to the two components.
- a coaxial hinged form is adopted in this embodiment. The arrangement sequence of specific components can be adjusted according to the folding needs of the folding bracket 22.
- the extension 2251 is actually a part of the handle bar 225. In order to avoid hand gripping, in one embodiment, when the folding bracket 22 is in an unfolded state, the extension 2251 abuts against the front seat bar 222.
- the handle bar 225 and the rear seat rod 223 are respectively attached to the two sides of the front seat rod 222.
- the above-mentioned folding state can obtain a more regular folding performance, which is convenient for users to use in different situations.
- the articulation between the rods can be realized by a simple rotating shaft, or can be realized by setting a rotating joint.
- the bottom of the handle bar 225 is provided with an upper joint seat 2252
- the top of the front seat rod 222 is provided with a lower joint seat 2221
- an upper joint seat 2252 and a lower joint seat 2221 buckles with each other with the first rotation axis as the center of rotation to form a revolving joint 227
- the revolving joint 227 is provided with a first locking mechanism 3 that restricts the rotation of the two to each other.
- the revolving joint 227 realizes the articulation of the support rod and the front foot rod.
- the advantage of the joint seat is that it can avoid the occurrence of hand-clamping gaps, and can accommodate more components, such as the first locking mechanism 3.
- the connecting rod 226 is attached to the outer peripheral surface of the revolving joint 227.
- the setting of the second link 226 as an arc-shaped rod also provides assistance to the folding effect of the folding bracket 22 to a certain extent, and a more regular folding appearance can be obtained.
- the revolute joint 227 can also be provided with external components.
- the swing rod seat 2271 is used to install the swing rod of the hood.
- the rotating joint 227 is also hinged with a canopy swing lever (not shown in the figure), and the canopy swing lever can swing relative to the handle bar 225 to open or close the canopy.
- the first locking mechanism 3 includes:
- the locking member 31 moves on the first axis of rotation, and has a locking position engaged with the upper joint seat 2252 and the lower joint seat 2221 and an unlocking position separated from one of them;
- the driving member 32 moves in the radial direction of the first rotation axis, and the locking member 31 is driven to the unlocking position through the driving inclined surface 311;
- the reset member 33 is disposed between one of the upper joint seat 2252 and the lower joint seat 2221 and the locking member 31, and is used to keep the locking member 31 in the locked position.
- the locking member 31 When the locking member 31 is in the locked position, the locking member 31 is simultaneously engaged with the upper joint seat 2252 and the lower joint seat 2221, thereby restricting the mutual rotation of the upper joint seat 2252 and the lower joint seat 2221, thereby determining the spatial state of the folding bracket 22 .
- the driving force exerted by the driving member 32 on the locking member 31 through the driving inclined surface 311 is greater than the force of the resetting member 33, the locking member 31 will move along the first rotation axis to separate from one of them.
- the upper joint seat 2252 The mutual rotation of the lower joint seat 2221 can be released, and the folding bracket 22 can move in space.
- the locking effect of the first locking mechanism 3 mainly depends on the meshing effect of the locking member 31 with the upper joint base 2252 and the lower joint base 2221.
- the locking member 31 includes a plurality of locking protrusions 312 protruding radially from the main body on the circumference and the inner surface of the upper joint seat 2252 and the lower joint seat 2221 are provided with a shape complementary to the locking protrusions 312 The size or shape of the locking groove 313 and the adjacent locking protrusions 312 are inconsistent.
- the increase in the number of the locking protrusions 312 can provide more locking positions, thereby providing more variable spatial states of the folding bracket 22.
- the user does not actually need so much space for the folding bracket 22 during use. Therefore, the setting of the locking protrusions 312 with inconsistent shapes can provide the user with several certain states of the folding bracket 22, and at the same time, larger locking protrusions.
- the volume of the 312 can also withstand greater torque, which improves the locking effect and the stability of the seat 2.
- one of the upper joint seat 2252 and the lower joint seat 2221 is provided with a sliding groove 314 for installing the driving member 32, and the sliding groove 314 faces the lock
- the inner wall of the piece 31 is provided with a driving slope 311.
- the driving inclined surface 311 may be provided on the driving member 32 to drive the locking member 31 to move separately, or it may be provided in the sliding groove 314 with reference to this embodiment.
- both the sliding groove 314 and the driving member 32 are provided with a driving inclined surface 311, and the two move mutually to push the driving member 32 and the locking member 31 to move together along the first rotation axis.
- the sliding groove 314 actually provides a limit to the movement of the driving member 32, thereby improving the stability of the movement of the driving member 32.
- the driving member 32 surrounds the central pivot 2272 of the first adaptor. The arrangement is also to improve the stability of the movement of the driving member 32.
- the driving member 32 can expose the revolute joint 227, which can be directly driven manually by the user, or a cable can be set to a position convenient for operation.
- a cable can be set to a position convenient for operation.
- the position of the handle 2253 formed by the support awning rods of the two side frames 221 is connected.
- the reset member 33 is a compression spring, which is pressed against one of the upper joint seat 2252 and the lower joint seat 2221 and the locking member 31 between.
- the resetting member 33 is arranged around the central pivot 2272 of the first adaptor in the solution shown in the figure, which can improve the stability of the movement of the resetting member 33.
- a child stroller includes a frame 1 and a rotatable seat 2.
- the seat 2 includes a rotating seat 21 at the bottom.
- the frame 1 of the child stroller is provided with a rotating seat
- the seat 21 is an adapter seat 11 that is matched with the rotation axis of the seat 2.
- the adapter seat 11 is provided with a second locking mechanism 4 that restricts the mutual rotation of the adapter seat 11 and the rotating seat 21.
- the second locking mechanism 4 includes:
- At least two positioning holes 41 are provided on the adapter seat 11;
- the movable pin 42 is arranged on the rotating seat 21.
- the movable pin 42 has an avoiding position to retract into the rotating seat 21 and a working position to protrude out of the rotating seat 21.
- the movable pin 42 is matched with the positioning hole 41 ;
- Towing rope (not shown in the figure), one end is linked with the movable pin 42 and the other end is linked with the parts on the seat 2 or the frame 1.
- the relative rotation stroke of the rotating seat 21 and the adapter seat 11 is restricted, so that the seat 2 cannot rotate relative to the adapter seat 11.
- the relative rotation stroke of the rotating seat 21 and the adapting seat 11 is released, so that the seat 2 can rotate relative to the adapting seat 11.
- the specific state in which the seat 2 can be locked relative to the adapter seat 11 depends on the setting position of the positioning hole 41. When multiple positioning holes 41 are provided, the seat 2 can be locked in multiple states relative to the adapter seat 11.
- the rotating seat 21 is provided with a traction groove 43 for guiding the traction cable, and the traction groove 43 is opened On the surface of the rotating seat 21.
- the traction groove 43 can guide the traction cable to move in a preset direction.
- the traction groove 43 opened on the surface of the rotating seat 21 has the advantages of simple processing and convenient assembly. But correspondingly, it is easy to be influenced by the outside world. Therefore, in one embodiment, as shown in FIG. 2b, the opening position of the traction groove 43 is provided with an anti-dropping piece 431 that prevents the traction cable from falling out of the traction groove 43, and the anti-dropping pieces 431 are provided in pairs at both ends of the opening of the traction groove 43, And each pair of anti-dropping pieces 431 are arranged in a staggered manner.
- the dislocation prevention sheet 431 can cover the opening of the traction groove 43 with a larger area, thereby restricting the traction cable from escaping from the traction groove 43.
- the traction cables are arranged in pairs and act on both ends of the movable pin 42 respectively.
- the movable pin 42 is also provided with a reset elastic member 44, and the reset elastic member 44 is provided between the two ends of the movable pin 42 connected to the traction cable. between. The arrangement of this embodiment can effectively improve the stability of the movable pin 42.
- one end of the movable pin 42 is a pin head 421 that fits with the positioning hole 41, and the other end is a puller that fits with the traction cable.
- the pulling part 422 is U-shaped and the two ends of the opening are respectively connected to the traction cable.
- the reset elastic member 44 is arranged in the opening of the pulling part 422. This structure can avoid the influence of the external environment on the reset elastic member 44.
- a mounting groove 45 for guiding the movement of the movable pin 42 is provided on the rotating seat 21, the mounting groove 45 surrounds the movable pin 42 to guide its movement path, the pulling portion 422 and the reset The elastic member 44 is received in the installation groove 45.
- the installation groove 45 not only restrains the movable pin 42 but also closes the traction cable and the reset elastic member 44, thereby further improving the stability of the movable pin 42.
- the driving source of the traction cable can be realized by a certain component on the frame 1.
- a leg rest 23 is rotatably installed on the rotating seat 21.
- the support 23 is linked, and the leg support 23 rotates relative to the rotating seat 21 to drive the movable pin 42 into the avoiding position.
- the leg support 23 is hinged with the front end of the rotating base 21 through the drive shaft 231, the traction cable is wound around the drive shaft 231, and the drive shaft 231 pulls the traction cable during the rotation.
- the leg rest 23 is a component that must be operated, and the triggering action of the traction cable is linked with the storage process of the leg rest 23, which can greatly facilitate the user and improve the experience of use.
- the leg support 23 has a downward use position relative to the rotating seat 21 and a trigger position relative to the rotating seat 21 upward.
- the leg support 23 moves from the use position to the trigger position.
- the process of triggering the traction rope by the leg rest 23 is not only a process of accommodating the leg rest 23 in front of the rotating seat 2, but also a process of anti-gravity. Therefore, the arrangement of this embodiment can effectively prevent the second locking mechanism 4 from being accidentally unlocked.
- the front end of the rotating seat 21 is provided with a shaft sleeve 232 that is matched with the drive shaft 231, the shaft sleeve 232 is provided with ratchet teeth 233, and the leg support 23 is provided with The pawl 234 is matched with the ratchet tooth 233, and the pawl 234 is slidably mounted on the leg support 23.
- the pawl 234 is also provided with a corresponding driving handle 235, which is installed on the lower edge of the leg rest 23 to facilitate the user's operation.
- a child stroller includes a frame 1 and a rotatable seat 2.
- the seat 2 includes a rotating seat 21 at the bottom.
- the frame 1 of the child stroller is provided with a rotating seat
- the seat 21 is an adapter seat 11 that is matched with the rotation axis of the seat 2, and a third locking mechanism 5 is provided between the adapter seat 11 and the rotation seat 21 to restrict the rotation seat 21 from being separated from the adapter seat 11.
- the third locking mechanism 5 includes:
- the engaging portion 51 is arranged on the rotating seat 21;
- a plurality of engaging blocks 52 are arranged on the adapter seat 11 and move in the radial direction of the rotation axis of the seat 2.
- Each of the engaging blocks 52 has an engaging position capable of cooperating with the engaging portion 51 and an exit of the engaging portion 51 Unlock position
- the unlocking member 53 is slidably mounted on the adapter seat 11, and the engaging blocks 52 are synchronously driven to the unlocking position through the inclined guide hole 533 on the unlocking member 53;
- the retaining member 54 is arranged between the rotating seat 21 and the engaging block 52 and is used to hold the engaging block 52 in the engaging position.
- the third locking mechanism 5 actually limits is the relative position of the adapter seat 11 and the rotating seat 21 on the rotation axis of the seat 2.
- the rotating seat 21 In order for the rotating seat 21 to rotate, in principle, it should have a circumferential outer edge to cooperate with the adapter seat 11.
- the multiple engaging blocks 52 actually constitute an equivalent limit ring with a variable size. When each engaging block 52 is in the engaging position, the inner diameter of the equivalent limit ring is smaller than the outer diameter of the engaging portion 51, thus To achieve the lock between the two.
- the bottom of the rotating base 21 is provided with a rotating disk 211, and the rotating disk 211 expands toward one end of the adapter base 11 to form the engaging portion 51.
- the rotating disk 211 may be a separate component as shown in the drawings, or may be provided as an integral structure with the rotating base 21.
- the side of the engagement portion 51 facing away from the positioning area 111 should be as flat as possible in principle, and a flange 511 may even be provided on the edge as shown in FIG. 3g to prevent engagement failure.
- the engaging block 52 in the figure is also provided with a downward protrusion 521 to enhance the engaging effect.
- the adapter seat 11 is recessed to form a positioning area 111.
- the positioning area 111 is used to accommodate at least a part of the rotating seat 21.
- the locking block 52 at the position extends into the positioning area 111.
- the positioning area 111 can be set as a tapered area as shown in the drawings, so as to facilitate alignment and installation.
- the positioning area 111 has a functional isolation effect.
- the adapter seat 11 is provided with a partition 112 to separate the positioning area 111 and other parts, and the partition 112 is provided with a lock hole 113, which is used to allow the engaging head 522 to enter Locating area 111.
- the partition 112 can provide a more regular appearance. More importantly, the positioning area 111 is open and is more susceptible to the influence of the external environment. The partition 112 can avoid interference between components and foreign objects and components.
- the part of the engaging block 52 located in the positioning area 111 is the engaging head 522, and the engaging head 522 faces one side of the engaging portion 51
- a guiding inclined surface 523 is provided, and the guiding inclined surface 523 is used to drive the engaging portion 51 into the unlocking position, and the engaging head 522 faces away from the stopping surface 524 on the side of the engaging portion 51.
- the setting of the guide slope 523 allows the seat 2 to be installed naturally during the installation process, avoiding the embarrassing situation of the user operating the unlocking member 53 while operating the seat 2.
- the protrusion 521 of the engaging head 522 mentioned above is also provided on the outer edge of the stop surface 524.
- the unlocking member 53 is arranged on the back of the adapter seat 11 and is arranged around the positioning area 111, and there is a gap between the movement direction of the locking block 52 and the sliding direction of the unlocking member 53 Angle.
- the movement of the unlocking member 53 needs to be stable to avoid accidental triggering. Therefore, the design of the included angle can make the locking block 52 not interfere with the movement of the unlocking member 53 while receiving the force of the rotating disk 211, even if a single locking block 52 failure does not mean that the overall engagement fails.
- the unlocking member 53 includes an operating portion 531 for applying a driving force and a linkage arm 532 extending to both sides of the positioning area 111 ,
- the inclined guide hole 533 is provided on the linkage arm 532.
- the linkage arm 532 is arranged in the form of the unlocking member 53, which can effectively reduce the volume and weight of the unlocking member 53, improve the feel in use, and can further reduce the overall thickness of the adapting seat 11, which is convenient for daily use.
- the operating portion 531 itself also has a engaging head 522 used to penetrate into the positioning area 111 to engage with the engaging portion 51, because the operating portion 531 is aligned with the direction of movement.
- the movement direction of the engaging head 522 is the same. Therefore, without adding components, the engaging effect of the adapter base 11 and the rotating disk 211 can be enhanced, and the structure is simple and effective.
- the bottom of the adaptor base 11 is open to accommodate the unlocking member 53, and the adaptor base 11 also includes a bottom mounting plate 114, a mounting plate and an adaptor
- the seat 11 is enclosed to constrain the unlocking member 53, the bottom mounting plate 114 is provided with an operating port 115, and the operating port 115 is used to expose the operating portion 531.
- the bottom mounting plate 114 and the adapter seat 11 cooperate with each other to form a relatively closed space, which prevents the components from being affected by the external environment. After being installed in place, the movement direction and stroke of the unlocking member 53 itself also need to be limited in order to achieve stable driving of the engaging block 52.
- the bottom of the adapter seat 11 is provided with At least two guide pins 116
- the unlocking member 53 is provided with a guide bar hole 534 that cooperates with the guide pin 116
- the guide pin 116 and the guide bar hole 534 cooperate to restrict the movement path of the unlocking member 53.
- the guide bar hole 534 is provided on the operating portion 531.
- a child stroller includes a frame 1 and a seat 2.
- the seat 2 is provided with a safety armrest 6, as shown in Figure 4d, the safety armrest 6 includes a grip 62 and a
- the connecting portion 61 connected to the frame 1 of the stroller further includes a supporting sleeve 63 and a tensioning member 64.
- the supporting sleeve 63 is cylindrical, the gripping portion 62 is inserted into the upper end of the supporting sleeve 63, and the connecting portion 61 is inserted into The lower end of the support sleeve 63; the tension member 64 is located inside the support sleeve 63 and both ends tighten the grip 62 and the connecting portion 61.
- the solution in this embodiment has obvious cost and accuracy advantages.
- the solution in this embodiment can be implemented by the support sleeve 63.
- the first fastener is wrapped to provide a good appearance and tactile feeling, and does not affect the strength while ensuring the use experience.
- the top of the connecting portion 61 is inserted into the support sleeve 63, and a first limiting step 611 is provided against the lower edge of the support sleeve 63, and the tension member 64 passes through the first
- the fastener 65 and the connecting portion 61 are force-fitted.
- the bottom of the grip 62 is inserted into the support sleeve 63,
- a second limiting step 621 is provided that abuts against the upper and lower edges of the support sleeve 63, and the tension member 64 is force-fitted with the connecting portion 61 through the second fastener 66.
- the upper and lower phase clamp can effectively ensure the force performance.
- the fully enclosed installation of the fasteners can be realized by buckling the two sides of the support sleeve 63, but correspondingly, the strength of the support sleeve 63 will be reduced. Therefore, in an embodiment, the support sleeve 63 is provided with at least one mounting hole, and the mounting hole is aligned with the first fastener and/or the second fastener. For a specific implementation manner, refer to an embodiment in which both ends of the first fastener 65 are closed by the supporting sleeve 63.
- one fastener can be installed first, then the support sleeve, and finally another fastener is installed to achieve the minimum exposed area of the fastener, which can avoid the connection while ensuring the strength of the connection.
- the supporting sleeve 63 is provided with a mounting hole 661 at both ends corresponding to the second fastener 66, and the length of the second fastener 66 is slightly shorter than the maximum diameter of the supporting sleeve 63. While it is convenient to assemble, it does not affect the external performance.
- the top of the connecting portion 61 is provided with a first slot 612, and the tension member 64 extends into the first slot 612 to cooperate with the first fastener 65 .
- the bottom of the holding portion 62 is provided with a second slot 622, and the tension member 64 extends into the second slot 622 to cooperate with the second fastener 66.
- the installation groove 45 can additionally provide the ability to resist torsion, thereby providing a better mechanical performance for the safety handrail 6.
- the axial direction of the first fastener 65 is perpendicular to the extending direction of the first slot 612.
- the axial direction of the second fastener 66 is perpendicular to the extending direction of the second slot 622.
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Abstract
一种儿童推车,包括车架(1)和可旋转的座椅(2),座椅(2)包括位于底部的旋转座(21),车架(1)上设有与旋转座(21)配合的适配座(11),旋转座(21)可绕座椅转动轴线相对适配座(11)转动,使得座椅(2)具有至少两个不同朝向的工作位。
Description
本申请涉及儿童用品领域,特别是涉及一种座椅可原位旋转的儿童推车。
有些婴儿推车为了方便照看孩童,其座椅是可以换向的,如CN2827809Y公开的推车中,座椅两侧设置有插件,而车架上相应地设置有与插件配合的插座。需要换向时,将座椅从车架上卸下,调换方向后,插件还是可以与插座配合,进而可以将座椅安装在车架上。因相对传统的儿童推车增加了插座和插件,车架的侧面结构明显变得更加复杂,座椅高出车架,导致儿童推车折叠后的体积更大,另外需要换向时需要将座椅卸下,造成了操作不便。
为了解决上述技术问题,本申请提供了一种座椅可以原位换向的儿童推车。
儿童推车,包括车架和可旋转的座椅,所述座椅包括位于底部的旋转座,车架上设有与所述旋转座配合的适配座,所述旋转座可绕座椅转动轴线相对适配座转动,使得所述座椅具有至少两种不同朝向的工作位。
优选的,所述座椅包括位于底部的旋转座和设置于所述旋转座上的折叠支架,所述折叠支架包括对称布置的两侧架,各侧架包括:
前坐杆,下端与所述旋转座前侧铰接;
后坐杆,下端与所述旋转座后侧铰接;
第一连杆,一端与所述前坐杆中部铰接,另一端与所述后坐杆的上端铰接;
手把杆,下端与所述前坐杆的上端铰接;
第二连杆,一端与所述后坐杆的上端铰接,另一端与所述手把杆的下端铰接;
所述旋转座、所述前坐杆、所述第一连杆以及所述后坐杆构成能够随折叠支架形变的第一连杆机构,所述前坐杆、所述手把杆、所述第一连杆以及所述第二连杆构成能够随折叠支架形变的第二连杆机构。
优选的,所述适配座与旋转座之间设有限制两者相互旋转的第二锁定机构,所述第二锁定机构包括:
至少两个定位孔,设置在所述适配座上;
活动销,设置在所述旋转座上,所述活动销具有缩入所述旋转座的回避位置和探出所述旋转座的工作位置,所述座椅在预设位置下,所述活动销与所述定位孔配合;
牵引索,一端与所述活动销联动,另一端与所述座椅或者所述车架上的部件联动。
所述适配座和所述旋转座之间设置有限制旋转座脱离适配座的第三锁定机构,所述第三锁定机构包括:
卡合部,设置在所述旋转座上;
多个卡合块,设置在所述适配座上且可沿所述座椅转动轴线的径向运动,各卡合块具有能够与所述卡合部配合的卡合位置和退出所述卡合部的释锁位置;
解锁件,滑动安装在所述适配座上,且通过自身上的引导斜孔同步地将各卡合块驱动至释锁位置;
保持件,设置在所述旋转座与所述卡合块之间,用于将所述卡合块保持在所述卡合位置。本申请还提供了一种儿童推车,包括车架和座椅,所述座椅上安装有安全扶手,所述安全扶手包括:
支撑套;
握持部,插接于所述支撑套的一端;
连接部,插接于所述支撑套的另一端,所述连接部使用时与座椅相适配;
拉紧件,位于所述支撑套的内部,所述拉紧件的两端分别牵拉所述握持部和所述连接部。
本申请座椅与车架为转动配合,座椅相对车架可以原位换向,不需要将座椅卸下进行换向,简化了操作。
图1a至图1j为一实施例中儿童推车示意图;
图2a至图2g为另一实施例中儿童推车示意图;
图3a至图3g为又一实施例中儿童推车安装示意图;
图4a至图4d为再一实施例中儿童推车示意图。
图中附图标记说明如下:
1、车架;11、适配座;111、定位区;112、隔板;113、锁孔;114、底部安装板;115、操作口;116、引导销;
2、座椅;21、旋转座;211、旋转盘;22、折叠支架;221、侧架;222、前坐杆;2221、下关节座;223、后坐杆;224、第一连杆;225、手把杆;2251、延长部;2252、上关节座;2253、提手;226、第二连杆;227、转动关节;2271、摆杆座;2272、中心枢轴;23、腿托;231、驱动轴;232、轴套;233、棘齿;234、棘爪;235、驱动手柄;
3、第一锁定机构;31、锁定件;311、驱动斜面;312、锁定凸块;313、锁定槽;314、滑槽;32、驱动件;33、复位件;
4、第二锁定机构;41、定位孔;42、活动销;421、销头;422、牵拉部;43、牵引槽;431、防脱片;44、复位弹性件;45、安装槽;
5、第三锁定机构;51、卡合部;511、凸缘;52、卡合块;521、凸起;522、卡合头;523、引导斜面;524、止动面;53、解锁件;531、操作部;532、联动臂;533、引导斜孔;534、引导条孔;54、保持件;
6、安全扶手;61、连接部;611、第一限位台阶;612、第一插槽;62、握持部;621、第二限位台阶;622、第二插槽;63、支撑套;64、拉紧件;65、第一紧固件;66、第二紧固件;661、安装孔。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
需要说明的是,当组件被称为与另一个组件“连接”时,它可以直接与另一个组件连接或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件,它可以是直接设置在另一个组件上或者可能同时存在居中组件。
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的,不是在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本领域中,杆件为了降低重量或者内置管线等原因选用管件,但是不论是管件还是杆件,核心目的都是为了传递力矩,支撑车架1关系,因此本文中的杆件也可以有多种实现形式,利于空心的管件等能够支撑多向力矩从而抗拉,抗压,抗弯的部件。
同时,本申请中提到的铰接、转动连接等在未做特地说明的情况下通过本领域中常见技术手段实现,例如各部件在枢轴位置沿轴向依次叠置且通过该枢轴转动配合,枢轴可以是单独的部件,也可以是与各部件中的一者为采用一体结构。
本申请中所表述的前后关系指代的儿童推车正向推行时的前后关系,并不局限于绝对方向上的前后,在本申请设置的旋转座椅2的情况下,前后是座椅2正向时的概念。例如座椅2正向时,前坐杆222位于后坐杆223的前侧,座椅2反向时,前坐杆222位于后坐杆223的后侧;再例如座椅2正向时,当用户站立于儿童推车后方,拉力以驱动童车后退时,前坐杆222就位于后坐杆223行进方向上的后侧。
参考附图1a至附图1j,一种儿童推车,包括车架1和可旋转的座椅2,座椅2包括位于底部的旋转座21,车架1上设有与旋转座21配合的适配座11,旋转座21可绕座椅转动轴线相对适配座11转动,如图1b和1c所示,通过转动座椅2,可以改变座椅2的朝向,以满足不同的使用要求。
车架1包括两个对称布置的侧支架,适配座11安置在两个侧支架之间。单个侧支架包括前脚杆、后脚杆和手把杆,前脚杆和后脚杆的顶部转动连接,底部安装有车轮,其中前轮为万向轮,便于推车转弯,后轮为定向轮,之间设置连接轴。两手把杆顶部向内侧弯曲连成一体,构成U型杆件。
在其中一实施例中,如图1a所示,手把杆的底部与后脚杆的中部之间插接配合,且连接处设置有锁定机构,手把杆和后脚杆的底部之间设置有扶手杆,手把杆的底部与前脚杆的顶部之间设置有连动杆。可以看出,侧支架所在的平面与座椅不会发生干涉,因此车架和座椅可以一同折叠。
本实施例中,适配座的前部与扶手杆、前脚杆、后脚杆同轴铰接,后部与手把杆铰接,解锁折叠时,适配座能够向后脚杆所在的平面靠拢,以缩小推车体积。显而易见的,只要车架对座椅使用不发生干涉,其侧支架结构可以采用现有的任意结构,相应适配座11的安装方式也会适应性变化。
为了便于携带,如图1f所示,座椅2和车架1往往是可以原位折叠的,在其中一实施例中,如图1d所示,座椅2包括位于底部的旋转座21和设置于旋转座21上的折叠支架22,旋转座21与儿童推车的车架1转动配合,折叠支架22包括对称布置的两侧架221,各侧架221包括:
前坐杆222,下端与旋转座21前侧铰接;
后坐杆223,下端与旋转座21后侧铰接;
第一连杆224,一端与前坐杆222中部铰接,另一端与后坐杆223的上端铰接;
手把杆225,下端与前坐杆222的上端铰接;
第二连杆226,一端与后坐杆223的上端铰接,另一端与手把杆225的下端铰接;
旋转座21、前坐杆222、第一连杆224以及后坐杆223构成能够随折叠支架22形变的第一连杆机构,前坐杆222、手把杆225、第一连杆224以及第二连杆226构成能够随折叠支架22形变的第二连杆机构。
第一连杆机构和第二连杆机构在结构上共用了第一连杆224和前坐杆222,因此第一连杆机构在空间形态上的变化,会同步至第二连杆机构,从而实现座椅2的折叠和展开。前坐杆222和后坐杆223在与旋转座21实现铰接时需要异轴铰接,即旋转座21的单个侧边上在不同位置设有第一铰接点和第二铰接点,前坐杆222的下端与第一铰接点铰接,后坐杆223的下端与第二铰接点铰接。
旋转座21用于实现座椅2相对车架1的前后旋转,折叠支架22作为骨架,主要用于支撑布套和遮阳蓬,具有折叠和展开两个状态。可以发现,整个座椅位于车架的两个侧支架之间的空间内,因此车架的结构不影响折叠支架的收折,反之亦然。
在一实施例中,如图1d所示,第一连杆224、后坐杆223的上端以及第二连杆226三者同轴铰接;手把杆225设有朝向前坐杆222方向延伸的延长部2251,第二连杆226通过延长部2251与手把杆225铰接。
由于两个连杆机构共用第一连杆224,因此第一连杆224会出现与两个部件连接的关系,为了简化结构和便于组装,在本实施例中采用同轴铰接的形式。具体部件的排布顺序,可以根据折叠支架22的折叠需要来调整。
延长部2251实际上是手把杆225的一部分,为了避免出现夹手间隙,在一实施例中,折叠支架22处于展开状态下,延长部2251贴靠于前坐杆222。
在各杆件的配合关系上,在一实施例中,折叠支架22处于折叠状态下,手把杆225和后坐杆223分别贴靠在前坐杆222的两侧。
上述形式的折叠状态能够得到更为规整的折叠表现,方便用户在不同情况下的使用。
杆件之间的铰接可以通过简单的转轴来实现,也可以通过设置转动关节实现。在一实施例中,如图1h、1i和1j所示,手把杆225的底部设有上关节座2252,前坐杆222的顶部设有下关节座2221,上关节座2252和下关节座2221以第一转动轴线为转动中心相互扣合形成转动关节227;转动关节227内部设有约束两者相互转动的第一锁定机构3。
在本实施例中,转动关节227实现了支撑杆和前脚杆的铰接。关节座的优点在于能够避免夹手间隙的出现,同时可以容纳更多的部件,例如第一锁定机构3。为了避免体积较大的关节座对杆件的运动关系产生影响,如图1g所示,在一实施例中,第二连杆226的延伸路径为曲线,折叠支架22处于折叠状态下,第二连杆226贴合转动关节227外周面。第二连杆226设置为弧形杆在一定程度上也为折叠支架22的折叠效果提供了帮助,可以得到更为规整的折叠外观。
除了内部部件的收容外,转动关节227还能在外部设置部件。例如用于安装车篷摆杆的摆杆座2271。在一实施例中,转动关节227上还铰接有车篷摆杆(图未示),车篷摆杆能够相对手把杆225摆动以打开或关闭车篷。
折叠支架22的展开和收折状态的维持通过第一锁定机构3实现。在一实施例中,如图1i和1j所示,第一锁定机构3包括:
锁定件31,在第一转动轴线上运动,具有与上关节座2252和下关节座2221啮合的锁定位置和与其中一者分离的释锁位置;
驱动件32,在第一转动轴线的径向上运动,通过驱动斜面311将锁定件31驱动至释锁位置;
复位件33,设置在上关节座2252和下关节座2221其中一者与锁定件31之间,用于将锁定件31保持在锁定位置。
当锁定件31处于锁定位置时,锁定件31与上关节座2252、下关节座2221同时啮合,从而限制了上关节座2252、下关节座2221的相互转动,从而确定了折叠支架22的空间状态。当驱动件32通过驱动斜面311对锁定件31施加的驱动力大于复位件33的作用力时,锁定件31就对沿着第一转动轴线运动从而与其中一者分离,此时上关节座2252、下关节座2221的相互转动能够被释放,折叠支架22能够在空间上运动。
因此不难看出,第一锁定机构3的锁定效果主要依靠锁定件31与上关节座2252、下关节座2221的啮合效果。在一实施例中,锁定件31包括在圆周的本体和相对本体径向突出的多个锁定凸块312,上关节座2252和下关节座2221的内表面上设有与锁定凸块312形状互补的锁定槽313,相邻的锁定凸块312尺寸或形状不一致。
锁定凸块312在数量上的增加能够提供更多的锁定位置,从而提供更多变的折叠支架22的空间状态。但是用户在使用过程中实际上并不需要如此多的折叠支架22的空间状态,因此设置形状不一致的锁定凸块312能够为用户提供几种确定状态的折叠支架22,同时较大的锁定凸块312体积也能承受更大的力矩,提高锁定的效果和座椅2的稳定程度。
在锁定件31的安装上,在一实施例中,如图1i所示,上关节座2252和下关节座2221其中一者上设有用于安装驱动件32的滑槽314,滑槽314朝向锁定件31的内壁上设有驱动斜面311。
驱动斜面311可以设置驱动件32上,单独驱动锁定件31运动,也可以参考本实施例,设置在滑槽314内。本实施例的设置形式上,实际上滑槽314和驱动件32上都设有驱动斜面311,两者相互运动从而推动驱动件32和锁定件31一同沿着第一转动轴线运动。滑槽314实际上提供了对驱动件32的运动限位,从而提高驱动件32运动的稳定性,在附图中给出的方案中,驱动件32围绕第一转接座的中心枢轴2272布置,同样也是为了提高驱动件32运动的稳定性。在驱动形式上,驱动件32可以暴露出转动关节227,由用户直接手动驱动,也可以设置拉索至方便操作的位置。例如图中由两侧架221的支撑蓬杆相连形成的提手2253位置。
在复位件33的设置上,在一实施例中,如图1i和1j所示,复位件33为压簧,抵压在在上关节座2252和下关节座2221其中一者与锁定件31之间。复位件33在图中所示的方案中围绕第一转接座的中心枢轴2272布置,能够提高复位件33运动的稳定性。
参考附图2a至附图2g,一种儿童推车,包括车架1和可旋转的座椅2,座椅2包括位于底部的旋转座21,儿童推车的车架1上设有与旋转座21以座椅2转动轴线配合的适配座11,适配座11上设有限制适配座11和旋转座21相互旋转的第二锁定机构4,第二锁定机构4包括:
至少两个定位孔41,设置在适配座11上;
活动销42,设置在旋转座21上,活动销42具有缩入旋转座21的回避位置和探出旋转座21的工作位置,座椅2在预设位置下,活动销42与定位孔41配合;
牵引索(图未示),一端与活动销42联动,另一端与座椅2或者车架1上的部件联动。
当活动销42处于工作位置时,旋转座21和适配座11相对旋转的行程被限制,从而座椅2无法相对适配座11旋转,当牵引索牵拉活动销42使其进入回避位置时,旋转座21和适配座11相对旋转的行程被释放,从而座椅2能够相对适配座11旋转。具体座椅2能够在相对适配座11的哪个状态锁定,具体要看定位孔41的设置位置。当定位孔41设置有多个时,座椅2能够在相对适配座11的多个状态锁定。
不难看出,活动销42的稳定动作,需要牵引索的稳定动作来实现,在一实施例中,如图2a所示,旋转座21上设有引导牵引索的牵引槽43,牵引槽43开设在旋转座21的表面。
牵引槽43能够引导牵引索在预设的方向上运动。开设在旋转座21表面的牵引槽43具有加工简单,组装方便的优点。但是相应的,容易受到外界的影响。因此在一实施例中,如图2b所示,牵引槽43的开口位置设有防止牵引索脱出牵引槽43的防脱片431,防脱片431成对设置在牵引槽43开口的两端,且每对防脱片431错位设置。错位设置的防脱片431能够覆盖更大面积的牵引槽43的开口,从而限制牵引索脱出牵引槽43。
在活动销42的工作过程介绍中,不难看出,活动销42会受到来自径向的作用力,因此活动销42可能会出现卡滞的情况。在一实施例中,牵引索设置成对设置,分别作用于活动销42的两端,活动销42还设有复位弹性件44,复位弹性件44设置在活动销42连接牵引索的两端之间。本实施例的设置能够有效的提高活动销42的稳定性。
在活动销42的具体结构上,在一实施例中,如图2d、2f、2g所示,活动销42一端为与定位孔41配合的销头421,另一端为与牵引索配合的牵拉部422,牵拉部422为U形且开口的两端分别连接牵引索,复位弹性件44设置在牵拉部422的开口内。该结构能够的避免外界环境对复位弹性件44的影响。
进一步的,在一实施例中,如图2e所示,旋转座21上设有引导活动销42运动的安装槽45,安装槽45围绕活动销42以引导其运动路径,牵拉部422和复位弹性件44收容在安装槽45内。
安装槽45不仅约束了活动销42,还对牵引索和复位弹性件44实行了封闭,从而进一步提高了活动销42的稳定性。
在牵引索的驱动来源上,可以通过车架1上的某部件来实现,也可以参考在一实施例中,如图2a所示,旋转座21上旋转安装有腿托23,牵引索与腿托23联动,腿托23相对旋转座21转动以驱动活动销42进入回避位置。
在一实施例中,腿托23通过驱动轴231与旋转座21的前端铰接,牵引索绕设在驱动轴231上,驱动轴231在转动过程中牵拉牵引索。
在座椅2的旋转过程中,腿托23是必须要操作的部件,牵引索的触发动作与腿托23的收纳过程联动,能够大大方便用户,提升使用感受。
在腿托23操作方法上,在一实施例中,腿托23具有相对旋转座21向下的使用位置和相对旋转座21向上的触发位置,腿托23在从使用位置运动至触发位置的过程中牵拉牵引索以驱动活动销42。腿托23触发牵引索的过程不仅仅是旋转座椅2前收纳腿托23的过程,更重要的是反重力的过程,因此本实施例的设置能够有效避免第二锁定机构4意外解锁。
为了进一步限制腿托23的自由运动,在一实施例中,旋转座21的前端设有与驱动轴231配合的轴套232,轴套232上设有棘齿233,腿托23上设有与棘齿233配合的棘爪234,棘爪234滑动安装在腿托23上。
附图2e中所示的方案不难看出,棘爪234还设有相应的驱动手柄235,安装在腿托23的下缘,方便用户操作。
参考附图3a至附图3g,一种儿童推车,包括车架1和可旋转的座椅2,座椅2包括位于底部的旋转座21,儿童推车的车架1上设有与旋转座21以座椅2转动轴线配合的适配座11,适配座11和和旋转座21之间设有有限制旋转座21脱离适配座11的第三锁定机构5。第三锁定机构5包括:
卡合部51,设置在旋转座21上;
多个卡合块52,设置在适配座11上且在座椅2转动轴线的径向上运动,各卡合块52具有能够与卡合部51配合的卡合位置和退出卡合部51的释锁位置;
解锁件53,滑动安装在适配座11上,且通过自身上的引导斜孔533同步地将各卡合块52驱动至释锁位置;
保持件54,设置在旋转座21与卡合块52之间,用于将卡合块52保持在卡合位置。
第三锁定机构5实际上限制的是适配座11和旋转座21在座椅2转动轴线上的相对位置。旋转座21要实现旋转,原理上应该具有圆周形的外缘与适配座11配合。多个卡合块52实际上构成了一个可变化大小的等效限位圈,当个卡合块52位于卡合位置时,等效限位圈的内径小于卡合部51的外径,从而实现两者的锁定。
在一实施例中,如图3e所示,旋转座21的底部设有旋转盘211,旋转盘211朝向适配座11的一端膨大以形成卡合部51。
旋转盘211可以如附图所示为一个单独的部件,也可以和旋转座21设置为一体结构。为了实现良好卡合效果,卡合部51背向定位区111一侧从原理上应为尽可能的为平面,甚至可以如附图3g所示在边缘提供一个凸缘511以防止卡合失效的情况,相应的,附图中的卡合块52也设置有向下的凸起521,来强化卡合效果。
为了方便定位和安装,在一实施例中,适配座11内部凹陷形成定位区111,定位区111用于收容至少一部分旋转座21,多个卡合块52围绕定位区111布置,处于卡合位置的卡合块52延伸至定位区111内。
定位区111可以如附图中所示的设置为一个锥形区域,从而方便对正和安装,定位区111从功能上还有隔离的效果。在一实施例中,如图3a所示,适配座11设有隔板112分离定位区111和其他部位,隔板112上设有锁孔113,锁孔113用于允许卡合头522进入定位区111。隔板112能够提供更为规整的外观,更重要是定位区111是开放的,更容易受到外部环境的影响,隔板112的设置能够避免部件之间以及异物和部件之间相互干涉。
在卡合块52的设置上,在一实施例中,如图3g所述,卡合块52位于定位区111内的部分为卡合头522,卡合头522朝向卡合部51的一侧设有引导斜面523,引导斜面523用于驱动卡合部51进入释锁位置,卡合头522背向卡合部51一侧为止动面524。
引导斜面523的设置使得在安装座椅2的过程中能够自然装入,避免了用户要一边操作座椅2,一边操作解锁件53的尴尬情况。上文中提到的卡合头522的凸起521也设置在止动面524的外缘。
在解锁件53的运动关系上,在一实施例中,解锁件53设置在适配座11的背面且围绕定位区111设置,卡合块52的运动方向与解锁件53的滑动方向之间存在夹角。
解锁件53的运动需要保证稳定,以免意外触发,因此存在夹角的设计可以使得卡合块52在收到旋转盘211作用力的同时不会干涉到解锁件53的运动,即使单个卡合块52失效也不至于整体卡合失效的情况。
为了同步各个卡合块52的运动情况,在一实施例中,如图3d和3b所示,解锁件53包括用于施加驱动力的操作部531和延伸至定位区111两侧的联动臂532,引导斜孔533设置在联动臂532上。
联动臂532相较于底板都设置为解锁件53的形式,能够有效降低解锁件53的体积和重量,提高使用手感,更能降低适配座11的整体厚度,方便日常使用。
实际上,在附图中所示的方案中,操作部531本身也带有一个卡合头522用于探入定位区111与卡合部51卡合,因为操作部531在运动方向上是与卡合头522的运动方向一致的,因此在不增加部件的情况下,能够强化适配座11和旋转盘211的卡合效果,结构简洁有效。
在解锁件53的安装上,在一实施例中,如图3b和3d所示,适配座11底部开放以容纳解锁件53,适配座11还包括底部安装板114,安装板和适配座11合围以约束解锁件53,底部安装板114上设有操作口115,操作口115用于暴露操作部531。
底部安装板114和适配座11相互配合形成了一个相对封闭的空间,避免了部件受到外部环境的影响。在安装到位后,解锁件53自身的运动方向和行程也需要限位,才能实现稳定的对卡合块52驱动,在一实施例中,如图3c所示,适配座11的底部设有至少两个引导销116,解锁件53上设有与引导销116配合的引导条孔534,引导销116和引导条孔534配合以约束解锁件53的运动路径。进一步的,在一实施例中,引导条孔534设置在操作部531上。
参考附图4a至附图4d,一种儿童推车,包括车架1和座椅2,座椅2上设有安全扶手6,如图4d所示,安全扶手6包括握持部62和与儿童推车的车架1连接的连接部61,还包括支撑套63和拉紧件64,支撑套63为筒形,握持部62插接在支撑套63的上端,连接部61插接在支撑套63的下端;拉紧件64位于支撑套63内部且两端拉紧握持部62和连接部61。
相较于相关技术中一体成型的方式而言,本实施例中的方案具有明显的成本和精度优点,相较于多段组装的技术方案而言,本实施例中的方案可以通过支撑套63来包裹第一紧固件,从而提供良好的外观和触感,在保证使用感受的同时不影响强度。
在保证力学性能方面,在一实施例中,连接部61的顶部插接在支撑套63内部,且设有与支撑套63下缘相抵的第一限位台阶611,拉紧件64通过第一紧固件65与连接部61受力配合。
通过拉紧件64的拉紧和第一限位台阶611的抵紧,来实现稳定的受力表现,相应的,在一实施例中,握持部62的底部插接在支撑套63内部,且设有与支撑套63上下缘相抵的第二限位台阶621,拉紧件64通过第二紧固件66与连接部61受力配合。上下相夹能够有效的保证受力性能。
在紧固件的安装上,可以通过支撑套63的两侧扣合的形式来实现紧固件的全封闭安装,但是相应的,会降低支撑套63的强度。因此,在一实施例中,支撑套63上设置有至少一个安装孔,安装孔与第一紧固件和/或第二紧固件对正。具体的实现方式上,可以参考一实施例中,第一紧固件65两端受支撑套63封闭。本实施例在安装过程中,可以先安装一个紧固件,再套设支撑套,最后安装另一个紧固件的形式来实现紧固件的最小暴露面积,从而能够在保证连接强度的同时避免毛刺等工艺缺陷带来的影响。相应的,在一实施例中,支撑套63对应第二紧固件66的两端设有一安装孔661,第二紧固件66的长度略短于支撑套63最大直径。在方便组装的同时不影响外部表现。
在上下相夹的安装方式的基础上,在一实施例中,连接部61的顶部设有第一插槽612,拉紧件64延伸至第一插槽612内与第一紧固件65配合。相应的,在一实施例中,握持部62的底部设有第二插槽622,拉紧件64延伸至第二插槽622内与第二紧固件66配合。安装槽45还能额外的提供抗扭的能力,从而为安全扶手6提供更好的力学表现。
为了保证紧固件的安装强度,第一紧固件65的轴向与第一插槽612的延伸方向垂直。相应的,第二紧固件66的轴向与第二插槽622的延伸方向垂直。从而强化拉紧件的拉紧效果。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。不同实施例中的技术特征体现在同一附图中时,可视为该附图也同时披露了所涉及的各个实施例的组合例。
以上所述实施例仅表达了本申请的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对申请专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本申请构思的前提下,还可以做出若干变形和改进,这些都属于本申请的保护范围。
Claims (42)
- 儿童推车,其特征在于,包括车架和可旋转的座椅,所述座椅包括位于底部的旋转座,车架上设有与所述旋转座配合的适配座,所述旋转座可绕座椅转动轴线相对适配座转动,使得所述座椅具有至少两个不同朝向的工作位。
- 根据权利要求1所述的儿童推车,其特征在于,所述座椅包括位于底部的旋转座和设置于所述旋转座上的折叠支架,所述折叠支架包括对称布置的两侧架,各侧架包括:前坐杆,下端与所述旋转座前侧铰接;后坐杆,下端与所述旋转座后侧铰接;第一连杆,一端与所述前坐杆中部铰接,另一端与所述后坐杆的上端铰接;手把杆,下端与所述前坐杆的上端铰接;第二连杆,一端与所述后坐杆的上端铰接,另一端与所述手把杆的下端铰接;所述旋转座、所述前坐杆、所述第一连杆以及所述后坐杆构成能够随折叠支架形变的第一连杆机构,所述前坐杆、所述手把杆、所述第一连杆以及所述第二连杆构成能够随折叠支架形变的第二连杆机构。
- 根据权利要求2所述的儿童推车,其特征在于,所述第一连杆、所述后坐杆的上端以及所述第二连杆三者同轴铰接;所述手把杆设有朝向所述前坐杆方向延伸的延长部,所述第二连杆通过所述延长部与所述手把杆铰接,所述折叠支架处于展开状态下,所述延长部贴靠于所述前坐杆。
- 根据权利要求2所述的儿童推车,其特征在于,所述折叠支架处于折叠状态下,所述手把杆和所述后坐杆分别贴靠在所述前坐杆的两侧。
- 根据权利要求2所述的儿童推车,其特征在于,所述手把杆的底部设有上关节座,所述前坐杆的顶部设有下关节座,所述上关节座和所述下关节座以第一转动轴线为转动中心相互扣合形成转动关节;所述转动关节内部设有约束上、下关节座相对转动的第一锁定机构。
- 根据权利要求5所述的儿童推车,其特征在于,所述第二连杆的延伸路径为曲线,所述折叠支架处于折叠状态下,所述第二连杆贴合所述转动关节外周面。
- 根据权利要求6所述的儿童推车,其特征在于,所述转动关节上还铰接有车篷摆杆,所述车篷摆杆能够相对所述手把杆摆动以打开或关闭车篷。
- 根据权利要求5所述的儿童推车,其特征在于,所述第一锁定机构包括:锁定件,可沿所述第一转动轴线运动,具有与所述上关节座和所述下关节座啮合的锁定位置和与其中一者分离的释锁位置;驱动件,可沿所述第一转动轴线的径向运动,通过驱动斜面将所述锁定件驱动至所述释锁位置;复位件,设置在所述上关节座和所述下关节座其中一者与所述锁定件之间,用于将所述锁定件保持在所述锁定位置。
- 根据权利要求8所述的儿童推车,其特征在于,所述锁定件包括圆柱形的本体和相对所述本体径向突出的多个锁定凸块,所述上关节座和所述下关节座的内表面上设有与所述锁定凸块形状互补的锁定槽,相邻的锁定凸块尺寸或形状不一致。
- 根据权利要求8所述的儿童推车,其特征在于,所述上关节座和所述下关节座其中一者上设有用于安装所述驱动件的滑槽,所述滑槽朝向所述锁定件的内壁上设有所述驱动斜面。
- 根据权利要求8所述的儿童推车,其特征在于,所述复位件为压簧,抵压在所述上关节座和所述下关节座其中一者与所述锁定件之间。
- 根据权利要求1所述的儿童推车,其特征在于,所述适配座与旋转座之间设有限制两者相互旋转的第二锁定机构,所述第二锁定机构包括:至少两个定位孔,设置在所述适配座上;活动销,设置在所述旋转座上,所述活动销具有缩入所述旋转座的回避位置和探出所述旋转座的工作位置,所述座椅在预设位置下,所述活动销与所述定位孔配合;牵引索,一端与所述活动销联动,另一端与所述座椅或者所述车架上的部件联动。
- 根据权利要求12所述的儿童推车,其特征在于,所述旋转座上设有引导所述牵引索的牵引槽,所述牵引槽开设在所述旋转座的表面。
- 根据权利要求13所述的儿童推车,其特征在于,所述牵引槽的开口位置设有防止所述牵引索脱出所述牵引槽的防脱片,所述防脱片成对设置在所述牵引槽开口的两端,且每对防脱片错位设置。
- 根据权利要求12所述的儿童推车,其特征在于,所述牵引索设置成对设置,分别作用于所述活动销的两端,所述活动销还设有复位弹性件,所述复位弹性件设置在所述活动销连接所述牵引索的两端之间。
- 根据权利要求15所述的儿童推车,其特征在于,所述活动销一端为与所述定位孔配合的销头,另一端为与所述牵引索配合的牵拉部,所述牵拉部为U形且开口的两端分别连接所述牵引索,所述复位弹性件设置在牵拉部的开口内。
- 根据权利要求16所述的儿童推车,其特征在于,所述旋转座上设有引导所述活动销运动的安装槽,所述安装槽围绕所述活动销以引导其运动,所述牵拉部和所述复位弹性件收容在所述安装槽内。
- 根据权利要求12所述的儿童推车,其特征在于,所述旋转座上旋转安装有腿托,所述牵引索与所述腿托联动,所述腿托相对所述旋转座转动以驱动所述活动销进入所述回避位置。
- 根据权利要求18所述的儿童推车,其特征在于,所述腿托通过驱动轴与所述旋转座的前端铰接,所述牵引索绕设在所述驱动轴上,所述驱动轴在转动过程中牵拉所述牵引索。
- 根据权利要求19所述的儿童推车,其特征在于,所述腿托具有相对旋转座向下的使用位置和相对旋转座向上的触发位置,所述腿托在从所述使用位置运动至所述触发位置的过程中牵拉所述牵引索以驱动所述活动销。
- 根据权利要求20所述的儿童推车,其特征在于,所述旋转座的前端设有与所述驱动轴配合的轴套,所述轴套上设有棘齿,所述腿托上设有与所述棘齿相配合的棘爪,所述棘爪滑动安装在所述腿托上。
- 根据权利要求1所述的儿童推车,其特征在于,所述适配座和所述旋转座之间设置有限制旋转座脱离适配座的第三锁定机构,所述第三锁定机构包括:卡合部,设置在所述旋转座上;多个卡合块,设置在所述适配座上且可沿所述座椅转动轴线的径向运动,各卡合块具有能够与所述卡合部配合的卡合位置和退出所述卡合部的释锁位置;解锁件,滑动安装在所述适配座上,且通过自身上的引导斜孔同步地将各卡合块驱动至释锁位置;保持件,设置在所述旋转座与所述卡合块之间,用于将所述卡合块保持在所述卡合位置。
- 根据权利要求22所述的儿童推车,其特征在于,所述旋转座的底部设有旋转盘,所述旋转盘朝向所述适配座的一端膨大以形成所述卡合部。
- 根据权利要求22所述的儿童推车,其特征在于,所述适配座内部凹陷形成定位区,所述定位区用于收容至少一部分所述旋转座,多个卡合块围绕所述定位区布置,处于卡合位置的卡合块延伸至所述定位区内。
- 根据权利要求24所述的儿童推车,其特征在于,所述卡合块位于所述定位区内的部分为卡合头,所述卡合头朝向所述卡合部的一侧设有引导斜面,所述引导斜面用于驱动所述卡合部进入卡合位置,所述卡合头背向所述卡合部一侧为止动面。
- 根据权利要求25所述的儿童推车,其特征在于,所述适配座设有隔板分离所述定位区和其他部位,所述隔板上设有锁孔,所述锁孔用于允许所述卡合头进入所述定位区。
- 根据权利要求24所述的儿童推车,其特征在于,所述解锁件设置在所述适配座的背面且围绕所述定位区设置,所述卡合块的运动方向与所述解锁件的滑动方向之间存在夹角。
- 根据权利要求24所述的儿童推车,其特征在于,解锁件包括用于施加驱动力的操作部和延伸至所述定位区两侧的联动臂,所述引导斜孔设置在所述联动臂上。
- 根据权利要求28所述的儿童推车,其特征在于,所述适配座底部开放以容纳所述解锁件,所述适配座还包括底部安装板,所述安装板和所述适配座合围以约束所述解锁件,所述底部安装板上设有操作口,所述操作口用于暴露所述操作部。
- 根据权利要求28所述的儿童推车,其特征在于,所述适配座的底部设有至少两个引导销,所述解锁件上设有与所述引导销配合的引导条孔,所述引导销和引导条孔配合以约束所述解锁件的运动路径。
- 根据权利要求30所述的儿童推车,其特征在于,所述引导条孔设置在所述操作部上。
- 根据权利要求1所述的儿童推车,其特征在于,所述座椅上安装有安全扶手,所述安全扶手包括:支撑套;握持部,插接于所述支撑套的一端;连接部,插接于所述支撑套的另一端,所述连接部使用时与座椅相适配;拉紧件,位于所述支撑套的内部,所述拉紧件的两端分别牵拉所述握持部和所述连接部。
- 根据权利要求32所述的儿童推车,其特征在于,所述连接部插接在所述支撑套内部,且所述连接部的外周设有与所述支撑套的端部相抵的第一限位台阶。
- 根据权利要求33所述的儿童推车,其特征在于,所述拉紧件通过第一紧固件与所述连接部固定防脱,通过第二紧固件与所述握持部固定防脱,所述第一紧固件和所述第二紧固件的轴向长度略短于所述支撑套最大直径。
- 根据权利要求34所述的儿童推车,其特征在于,所述支撑套上设置有至少一个安装孔,所述安装孔与所述第一紧固件和/或所述第二紧固件对正。
- 根据权利要求34所述的儿童推车,其特征在于,所述连接部的顶部设有第一插槽,所述拉紧件延伸至所述第一插槽内与所述第一紧固件配合。
- 根据权利要求36所述的儿童推车,其特征在于,所述第一紧固件的轴向与所述第一插槽的延伸方向垂直。
- 根据权利要求32所述的儿童推车,其特征在于,所述握持部的底部插接在所述支撑套内部,且设有与所述支撑套的端部相抵的第二限位台阶,所述拉紧件通过第二紧固件与所述连接部受力配合。
- 根据权利要求38所述的儿童推车,其特征在于,所述握持部的底部设有第二插槽,所述拉紧件延伸至所述第二插槽内与所述第二紧固件配合。
- 根据权利要求39所述的儿童推车,其特征在于,所述第二紧固件的轴向与所述第二插槽的延伸方向垂直。
- 根据权利要求1所述的儿童推车,其特征在于,所述车架包括两侧架,所述适配座安置在两侧架支架之间。
- 根据权利要求41所述的儿童推车,其特征在于,所述侧支架包括前脚杆、后脚杆和手把杆,所述前脚杆和后脚杆的底部安装有车轮,顶部转动连接。
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CN202020897767.XU CN213109483U (zh) | 2020-05-25 | 2020-05-25 | 方便可旋转座椅装卸的儿童推车 |
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