TW202017792A - Stroller capable of operating the folding of frame by folding handrail in which the operating unit is disposed on the folding handrail so that the frame unit can be folded with one hand - Google Patents

Abstract

A stroller that is capable of operating the folding of a frame by a folding handrail includes a frame unit, a folding handrail, two joint units, two pivoting units, an operating unit, and two linking mechanisms. The pivoting units are pivotally connected to the frame unit and are configured to adjust the inclined angle of the folding handrail. Each pivoting unit includes two pivot seats that can pivot relative to each other and one of the pivot seats includes a recess. The operating unit is disposed on the folding handrail. The linking mechanisms are disposed on the joint units and connected to the operating unit. Each linking mechanism includes a pulling cable passing through the recess of the respective pivoting unit. The pulling cable of each linking mechanism can be driven to pivot the joints by operating the operating unit, so that the frame unit is converted from an unfolding status to a folding status.

Description

Cart with folded frame can be operated by folding armrest

The invention relates to a collapsible trolley capable of adjusting the inclination angle of the handle, in particular to a collapsible trolley which can be controlled by a folding armrest to control the frame.

Referring to FIG. 1, an existing collapsible stroller 1 capable of adjusting the inclination angle of the handle includes a collapsible frame unit 11 and two sets of pivot units 12 pivotably disposed on the frame unit 11 1. A handle 13 adjustably provided on the top side of the frame unit 11, two sets of joint units 14 pivotally connected to the handle 13 and the frame unit 11, and two sets operably provided on the frame unit 11 The left and right sides of the locking device 15 connected to the pivot units 12 and a plurality of wheels 16 provided on the bottom side of the frame unit 11. By pressing the joint units 14, the inclination angle of the handle 13 relative to the frame unit 11 can be adjusted. Each locking device 15 has a traction wire (not shown) that can be detachably hooked to the respective pivoting unit 12, and the traction wire is driven away from the respective pivoting unit by operating the locking devices 15 12, and then drive the pivot units 12 to pivot and fold the frame unit 11.

Although the stroller has the functions of folding the frame unit 11 and adjusting the inclination angle of the handle 13, it prevents the joint units 14 from being disposed between the handle 13 and the frame unit 11. The connection point makes the traction wires of the locking device 15 pass through the existing joint units 14 without increasing the difficulty of affecting the movement of the joint units 14, so that the locking devices 15 only It can be installed on the left and right sides of the frame unit 11 and is lower than the positions of the joint units 14, but cannot be installed on the handle 13. Therefore, it is inconvenient to control with both hands when folding.

Therefore, the object of the present invention is to provide a convenient cart that can be folded and operated by folding armrests.

Therefore, the present invention can control the folding cart with a folding armrest, which includes a frame unit, a wheel unit, a folding armrest, two joint units, two pivoting units, an operating unit, and two linkage mechanisms.

The frame unit can be switched between a collapsed state and an expanded state, and includes a front rod group located on the front side, and a vertical rod group pivotally connected to the front rod group and extending obliquely upward. The rod set has two spaced-apart front rods. The vertical rod set has two vertical rods respectively corresponding to the front rods, and each vertical rod is pivotally connected to a respective front rod. The wheel unit includes a plurality of rollers rotatably disposed on the bottom side of the frame unit. The folding armrest is located on the top side of the frame unit and connected to the uprights. The folding armrest can be pivoted relative to the frame unit to adjust the tilt angle. The joint units are respectively pivotally connected to the front rods and the upright rods, and each joint unit is used to drive the respective upright rod to pivot relative to the corresponding front rod so that the frame unit can Transition between the collapsed state and the expanded state.

The pivoting units are pivotally connected to the uprights of the frame unit and the folding armrest and are used to adjust the tilt angle of the folding armrest. Each pivoting unit includes two mutually opposed and relatively pivotable And a positioning group. The pivoting seats cooperate to define an accommodating space for accommodating the positioning group. One of the pivoting seats has an alcove spaced apart from the accommodating space. The positioning group of the pivoting unit can move between a free position where the pivoting seats pivot with each other, and a locking position where the pivoting seats are locked with each other.

The manipulation unit is disposed on the folding armrest, and includes a driving block accommodated in the folding armrest, and an operating piece exposed to the folding armrest and used to rotate or move the driving block. The linking mechanisms are respectively provided on the joint units and connected to the operating unit via the uprights. Each linking mechanism is used to drive the joint units to pivot and includes a movable pulling cable, each pulling cable is connected The driving block passes through the cavity of each pivoting unit from the inside of the folding armrest, and is connected to the corresponding joint unit via the corresponding upright.

By operating the operating member of the control unit, the driving block can be driven to rotate or move, and the pull cord of each linkage mechanism can be driven to pivot the joint units to drive the frame unit to switch from the deployed state to the deployed state. status.

The effect of the present invention is that the recess is formed in the first pivot joint of each pivot unit, and the pulling cable of each linkage mechanism is passed through the recess of the first pivot joint of the respective pivot unit and It extends to the folding armrest, so the control unit can be arranged on the folding armrest without affecting the operation of the positioning groups of the pivoting units. According to the invention, the control unit located on the folding armrest can be operated with one hand, the frame unit can be folded, and the operation is quite convenient.

Before the present invention is described in detail, it should be noted that the front, back, left, right, top, bottom, inside, and outside in the following description are based on the normal use orientation.

Referring to FIGS. 2, 3 and 4, an embodiment of the cart for folding and controlling the folding frame of the present invention includes a frame unit 2, a wheel unit 3, a folding armrest 4, two joint units 5, Two pivoting units 6, one operating unit 7, and two linkage mechanisms 8 (see Figure 5).

The frame unit 2 includes a front rod group 21 located on the front side, a vertical rod group 22 pivotally connected to the front rod group 21 and extending obliquely upward, and a rear rod group pivotally connected to the front rod group 21 The rear rod group 23 of the upright rod group 22 and a bottom rod group 24 pivotably connected to the front rod group 21. The front rod group 21 has two spaced front rods 211. Preferably, one ends of the front rods 211 are connected to each other to form a V-shaped connection. The vertical pole group 22 has two vertical poles 221 spaced apart and corresponding to the front poles 211 respectively. The vertical poles 221 are arranged in parallel on the left and right sides. Each vertical pole 221 is pivotally connected to a respective front pole 211. The rear rod group 23 is composed of three rod bodies connected in an H-shape. The bottom rod group 24 is lower than the upright rod group 22 and is also connected to the rear rod group 23, and is composed of four rod bodies connected in a mouth shape.

The frame unit 2 can be switched between a collapsed state (see FIG. 4) and an expanded state (see FIG. 2). When the frame unit 2 is in the collapsed state, the front rod group 21 and the upright Group 22, the rear pole group 23, and the bottom pole group 24 are close to each other. When the frame unit 2 is in the deployed state, the front pole group 21, the upright pole group 22, the rear pole group 23, and the bottom pole group 24 are mutually stretched.

The wheel unit 3 includes a plurality of rollers 31 rotatably disposed on the bottom side of the frame unit 2. In this embodiment, the wheel unit 3 includes a total of three rollers 31, of which one roller 31 is located in the front rod group 21 The other two rollers 31 are located on the bottom side of the rear rod group 23.

The folding armrest 4 is located on the top side of the frame unit 2 and is connected to the uprights 221. As shown in FIG. 3, the folding armrest 4 can be pivoted relative to the frame unit 2 to adjust the tilt angle to facilitate different High user grips.

4 and 5, the joint units 5 are pivotally connected to the front rods 211 and the upright rods 221, respectively. Each joint unit 5 is used to drive the respective upright rod 221 to pivot relative to the corresponding front rod 211, so that the frame unit 2 can be switched between the collapsed state and the expanded state. Each joint unit 5 includes two connecting seats 51 and 52 pivotally connected to each other, and a blocking shaft 53, the connecting seat 51 is connected to the front rod 211, the connecting seat 52 is connected to the upright rod 221, and the blocking shaft 53 is provided Inside the connecting seat 51.

Referring to FIGS. 7, 8 and 9, the pivot units 6 are pivotally connected to the uprights 221 of the frame unit 2 and the folding armrest 4, and are used to adjust the tilt angle of the folding armrest 4 . Each pivoting unit 6 includes a first pivoting base 61 and a second pivoting base 62 that are mutually opposed and relatively pivotable, a positioning group 63, a pivot 64, an outer cover 65, and a pressure Button 66. The first pivoting base 61 and the second pivoting base 62 cooperate to define an accommodating space 60 for accommodating the positioning group 63. In this embodiment, the first pivoting seat 61 and the second pivoting seat 62 each have a base 611, 621, and a tube 612, 622 extending from the base 611, 621. The bodies 611 and 621 cooperate with each other and define the accommodating space 60. The tube body 612 of the first pivot base 61 passes through the corresponding upright rod 221, and the tube body 622 of the second pivot base 62 is provided for the folding armrest 4 to be connected through.

8, 9, 11 and 12, preferably, the seats 611 and 621 of the first pivoting seat 61 and the second pivoting seat 62 have a base wall 613 and 623 and a surround The ring walls 614, 624 of the base walls 613, 623, the base walls 613, 623 and the ring walls 614, 624 cooperate to define an actuation chamber 610, 620, and a spaced and oriented spaced from the actuation chamber 610, 620 The recesses 615 and 625 on the outside are surrounded by the actuation chambers 610 and 620 to define the accommodating space 60. The seat bodies 611 and 621 of the first pivoting seat 61 and the second pivoting seat 62 both have a tooth portion formed on the inner wall surfaces of the respective ring walls 614 and 624 and surrounding the entire circumference. The outer cover 65 is used to close the recess 615 of the first pivot base 61.

Referring to FIGS. 11, 12 and 13, in detail, the ring wall 614 of the first pivot base 61 has an arc-shaped slot 616 formed on the top side, and the tube body of the first pivot base 61 612 is formed with a mounting groove 617 opposite to the slot 616 and communicating with the recess 615. The tube body 622 of the second pivot base 62 has a pair of tube bottom walls 626 that are engaged with the seat body 611 of the first pivot base 61, and a tube bottom wall 626 that surrounds and extends from the tube bottom wall 626 to The tube surrounding wall 627 of the folding handrail 4 is defined by the tube bottom wall 626 and the tube surrounding wall 627 cooperating to define a tube slot 628, the tube bottom wall 626 is formed with a perforation penetrating the top and bottom and communicating with the tube slot 628 629, and the through hole 629 communicates with the cavity 615 of the first pivoting seat 61 through the slot 616 of the first pivoting seat 61.

Referring back to FIGS. 8, 9, and 10, the positioning group 63 of each pivot unit 6 is accommodated in the respective accommodating space 60, and each positioning group 63 has a movable engagement with the first pivot The base 61, the gear member 631 of the tooth portion of the second pivot seat 62, and an elastic member 632 springing against the gear member 631 and the first pivot seat 61, the gear member 631 is on the outer peripheral surface A plurality of clamping teeth arranged at intervals and surrounding the entire circumference are formed. The elastic member 632 is used to provide potential energy for constantly moving the gear member 631 toward the second pivot base 62. The pivot 64 of each pivoting unit 6 is axially movably disposed in the respective first pivot joint 61, the second pivot joint 62 and the corresponding positioning group 63. The pressing button 66 of each pivoting unit 6 can be pressedly connected to the respective pivot 64 and abut against the corresponding gear member 631. Preferably, at least a part of the push button 66 is located in the recess 625 of the second pivot base 62.

The positioning group 63 of each pivoting unit 6 can be in a free position where the first pivoting seat 61 and the second pivoting seat 62 can pivot with each other (see FIG. 10), and the first pivoting seat 61. The second pivoting seat 62 moves between a locking position (see FIG. 9) which is locked by each other. By simultaneously pressing the push button 66 of each pivot unit 6, the respective gear members 631 are completely disengaged from the teeth of the corresponding second pivot seat 62 and completely sunk into the respective first pivot seat 61 Each elastic member 632 is compressed at the same time to accumulate potential energy. At this time, each second pivot base 62 can rotate relative to the respective first pivot base 61 about the pivot shaft 64, thereby driving the The folding armrest 4 pivots relative to the frame unit 2 to adjust its tilt angle.

The manipulation unit 7 is disposed on the folding armrest 4 and includes a driving block group 71 accommodated in the folding armrest 4 and an operating member 72 exposed to the folding armrest 4 and rotatably disposed on the folding armrest 4 . In this embodiment, the operating member 72 is a rotatable sleeve and is used to rotate the driving block group 71. In other variations of this embodiment, a push button can also be used to drive the driving block The movement of the group 71 up and down also has the effect of causing the displacement of the driving block group 71. In this embodiment, the folding armrest 4 is formed by two L-shaped pipes 41, and a gap for the manipulation unit 7 is left between the pipes 41. Preferably, the driving block group 71 has two driving blocks 711 respectively rotatably mounted on the pipes 41. In other variations of this embodiment, the driving block group 71 can also have only one driving block 711, and its two ends are respectively connected to the pipes 41.

Referring to FIGS. 5, 7, and 8, and FIG. 13, the linkage mechanisms 8 respectively correspond to and are provided in cooperation with the joint units 5. Each linking mechanism 8 is provided in the respective joint unit 5 and connected to the manipulating unit 7 via the corresponding upright 221. Each linking mechanism 8 is used to drive the respective joint unit 5 to pivot to link the frame unit 2 Together.

Each linking mechanism 8 includes a movable pulling cable 81 and a set of spring 82 disposed on the pulling cable 81. The spring 82 is used to provide an elastic restoring force for the pulling cable 81 to return. For ease of understanding, the following is a description of the linking mechanism 8. The pulling cable 81 is connected to the driving block 711 of the driving block group 71, and passes through the pivot in the tube 41 of the folding armrest 4 in order After the tube groove 628 of the rotating unit 6, the perforation 629 (see FIG. 12), the recess 615 of the first pivot base 61 and the mounting groove 617, they are connected to the joint unit 5 via the upright rod 221 internally. The pulling cable 81 has a cable 811, a connecting piece 812, and a hook 813. The cable 811 is connected to one of the driving blocks 711 of the control unit 7 and along the inside of the tube 41 of the folding armrest 4 Pass through the pivot unit 6 and extend toward the path of the joint unit 5 through the inside of the upright 221. The cable 811 can freely move or flex on its path and does not interfere with the corresponding pivot unit 6 The positioning group 63 interferes. The connecting piece 812 is connected to the cable 811. The hooking piece 813 is connected to the connecting piece 812 and is pivotably disposed on the joint unit 5 and can be detachably hooked on the blocking shaft 53 of the joint unit 5.

Referring to FIGS. 7 and 9, since the positioning groups 63 of the pivot units 6 are accommodated in the accommodating space 60, and the pulling cables 81 of the linkage mechanisms 8 respectively pass through the recesses of the first pivot seats 61 In the chamber 615, the two are independent and do not interfere with each other. Therefore, in the present invention, the manipulation unit 7 can be disposed on the folding armrest 4. At the same time, the outer cover 65 of each pivoting unit 6 closes the recess 615 of the first pivoting seat 61, so that the respective cable 811 can be hidden and the appearance is more beautiful.

Referring to FIGS. 5, 6 and 7, when the user wants to fold this embodiment, as long as the operating member 72 of the control unit 7 located on the folding armrest 4 is rotated with one hand, the driving can be driven The block group 71 rotates, and then the pulling cable 81 of each linkage mechanism 8 is moved to disengage the respective hooking pieces 813 from the corresponding blocking shaft 53 of the joint unit 5, so that the connecting seats 51 of the joint units 5 52 is relatively pivoted, which can drive the frame unit 2 to switch from the expanded state to the collapsed state (see FIG. 4), and the cable line 811 of each pulling cable 81 can freely move or bend on its path It will not interfere with the positioning group 63 of the respective pivot unit 6, and the operation is quite convenient.

In summary, according to the present invention, a folding armrest can be used to control the cart with the frame folded, the recess 615 is formed in the first pivot seat 61 of each pivot unit 6, and the pulling cable 81 of each linkage mechanism 8 is formed After passing through the corresponding first pivoting seat 61 and the second pivoting seat 62 through their respective recesses 615, they then extend to the folding armrest 4, and the control unit 7 can be arranged on the folding armrest 4 without It will affect the operation of the positioning groups 63 of the pivot units 6, therefore, it has the effect of being able to control the folding of the frame unit 2 by the folding armrest 4, the operation is quite convenient, so it can indeed achieve the purpose of the invention .

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.

2: Frame unit 21: front rod group 211: front rod 22: vertical rod group 221: vertical rod 23: rear rod group 24: bottom rod group 3: wheel unit 31: roller 4: folding armrest 41: pipe fitting 5: joint Unit 51: connecting base 52: connecting base 53: block shaft 6: pivot unit 60: accommodating space 61: first pivot joint 610: operating chamber 611: seat body 612: tube body 613: base wall 614: ring wall 615: Alcove 616: Slotted 617: Mounting slot 62: Second pivot seat 620: Actuating chamber 621: Seat body 622: Tube body 623: Base wall 624: Ring wall 625: Alcove chamber 626: Tube bottom wall 627: Tube wall 628: tube groove 629: perforation 63: positioning group 631: gear member 632: elastic member 64: pivot 65: outer cover 66: push button 7: control unit 71: driving block group 711: driving block 72: operation Item 8: Linkage mechanism 81: Pull cable 811: Cable 812: Connecting piece 813: Hook and pull member 82: Spring

Other features and functions of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: 　 FIG. 1 is a perspective view illustrating an existing collapsible stroller capable of adjusting the tilt angle of the handle; 　 FIG. 2 is The present invention is a perspective view of an embodiment of a cart with a folding armrest that can control the folding frame; FIG. 3 is a view similar to FIG. 2, illustrating that a folding armrest of this embodiment can pivot relative to a frame unit Adjust the tilt angle; 　 Figure 4 is a view similar to Figure 3, illustrating that the frame unit is in a collapsed state; Figure 5 is an incomplete partial cross-sectional view taken along line VV in Figure 2 to illustrate the implementation Example, a hooking member of a linkage mechanism is hooked on a block shaft of a joint unit; FIG. 6 is a view similar to FIG. 5 illustrating that the hook member is separated from the block shaft; FIG. 7 is an incomplete perspective view , Illustrating that an operating unit of the embodiment is disposed on the folding armrest; FIG. 8 is a perspective exploded view of FIG. 7, illustrating that the two pivoting units of the embodiment are pivotably disposed between the folding armrest and the frame unit FIG. 9 is an incomplete partial cross-sectional view taken along the line IX-IX in FIG. 2, illustrating that one of the positioning units of the pivot unit is housed in an accommodation space, and the positioning group is located in a A locking position where the first pivoting base and a second pivoting base are locked with each other; FIG. 10 is a view similar to FIG. 9 illustrating that a pressing button of one of the pivoting units is pressed and the positioning group is made Move to a free position where the first pivot joint and the second pivot joint can pivot with each other; FIG. 11 is an exploded perspective view of the first pivot joint and the second pivot joint in this embodiment; FIG. 12 is a view similar to FIG. 11, but viewed from another angle; and FIG. 13 is an incomplete three-dimensional assembly diagram illustrating a cable of the linkage mechanism passing through the first pivot base and the first Two pivot joints.

2: Frame unit

221: Pole

4: folding armrest

41: Pipe fittings

6: pivot unit

61: The first pivot joint

610: Action room

611: Seat

625: Alcove

63: positioning group

631: Gear parts

632: Elastic piece

64: pivot

65: outer cover

66: push button

7: Control unit

612: tube body

617: Installation slot

62: Second pivot joint

621: seat body

622: tube body

71: Drive block group

711: Drive block

72: operating parts

8: linkage mechanism

81: Pull the cable

Claims (10)

A cart that can be folded and controlled by a folding armrest includes: a frame unit that can be switched between a folded state and an unfolded state, and includes a front rod set on the front side, and a pivotally connected The front pole group extends upwardly and obliquely. The front pole group has two spaced front poles. The vertical pole group has two vertical poles corresponding to the front poles respectively. Each vertical pole can pivot Connected to the respective front rods; a wheel unit including several rollers rotatably provided on the bottom side of the frame unit; a folding armrest located on the top side of the frame unit and connected to the uprights, the folding The armrest can be pivoted relative to the frame unit to adjust the tilt angle; the two joint units are respectively pivotally connected to the front rods and the upright rods, and each joint unit is used to drive the respective upright rods relative to The corresponding front rod pivots so that the frame unit can be switched between the collapsed state and the expanded state; the two pivot units are pivotally connected to the uprights and the folding armrest of the frame unit And for adjusting the tilt angle of the folding armrest, each pivoting unit includes two pivoting seats that are mutually opposed and relatively pivotable, and a positioning group, and the pivoting seats cooperate to define a housing for accommodating the positioning group One of the pivoting seats has a recess spaced apart from the containing space, the positioning group of each pivoting unit can be in a free position where the pivoting seats pivot to each other, and one The pivoting seats move between the locking positions where the pivotal seats are locked with each other; an operating unit is provided on the folding armrest, and includes a driving block accommodated in the folding armrest, and an exposed portion of the folding armrest and used to link the An operating member that drives the rotation or movement of the driving block; and two linkage mechanisms, which are respectively provided to the joint units and connected to the control unit via the uprights, each linkage mechanism is used to drive the joint units to pivot and includes a Moving pulling cables, each pulling cable is connected to the driving block and passes through the cavity of the respective pivoting unit from the inside of the folding armrest, and is connected to the corresponding joint unit through the corresponding upright rod by The operating member operating the control unit can drive the driving block to rotate or move, and the pulling cable of each linkage mechanism is driven to pivot the joint units to drive the frame unit to transition from the deployed state to the collapsed state . According to claim 1, the cart can be folded and controlled by a folding armrest, wherein each pivoting seat of each pivoting unit has a seat body, and a tube body extending from the seat body, etc. The seat body of the pivot seat cooperates and defines the accommodating space, one of the seat bodies of the pivot seat has the recess, and one of the pipe bodies of the pivot seat is connected to the corresponding upright bar, and A tube body of the pivot seat is connected to the folding armrest. According to claim 2, the cart can be folded and controlled by a folding armrest, wherein one of the tubes of the pivot seat forms a mounting groove communicating with the recess, and the pulling cable of each linkage mechanism passes through One of the concave chamber and the mounting groove of the pivot base of each pivoting unit. According to claim 3, the cart can be folded and controlled by a folding armrest, wherein the tube body of each pivoting seat of each pivoting unit has a cavity communicating with one of the pivoting seats For perforation, the pull cord of each linkage mechanism passes through the respective perforation. As described in claim 4, the cart can be folded and controlled by a folding armrest, wherein one of the pivoting seats of each pivoting unit also has a slot, and each slot is opposite to the The installation groove is connected to the corresponding cavity and the corresponding perforation. According to claim 5, the cart can be folded and controlled by a folding armrest, wherein the other tube body of the pivot seat has a pair of tube bottom walls that are engaged with one of the seat bodies of the pivot seat, and A tube wall surrounding the tube bottom wall and extending from the tube bottom wall to the folding handrail; a tube groove is defined by the tube bottom wall and the tube wall cooperating with the tube bottom wall; The perforation of the tube slot. According to claim 2, the cart can be folded and controlled by a folding armrest, wherein the positioning unit of each pivot unit has a gear member movably embedded in the seat body of the pivot seats, and An elastic member that springs against the gear member and one of the pivoting seats, each pivoting unit also has a pivot shaft that is axially movable between the respective pivoting seats and the positioning group, and A pressing button connected to the pivot shaft and abutting against the gear member, by pressing the pressing button, the gear member can be pushed out of the seat body of the other pivot seat completely, and the other pivot seat can be driven Rotate relative to one of the pivot bases with the pivot as the center. According to claim 7, the cart can be folded and controlled by a folding armrest, wherein the seat body of each pivoting seat of each pivoting unit has a tooth located in the accommodating space, each pivoting The gears of the unit are movably arranged on the teeth. As described in claim 1, the cart can be folded and controlled by a folding armrest, wherein each pivoting unit further includes at least one outer cover, and the outer cover is used to close one of the recesses of the pivoting seat. According to claim 1, the cart can be folded and controlled by a folding armrest, wherein each joint unit includes a blocking shaft, and the pulling cable of each linkage mechanism has a cable, a connecting piece, and a hook The cable is connected to the driving block of the control unit and passes through the cavity of the respective pivoting unit from the inside of the folding armrest and extends toward the corresponding joint unit through the inside of the corresponding pole. The connecting piece Connected to the cable, the hooking piece is connected to the connecting piece and is pivotally arranged on the respective joint unit and can be detachably hooked on the blocking shaft of the respective joint unit.

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