WO2019054429A1 - 乳母車 - Google Patents

乳母車 Download PDF

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Publication number
WO2019054429A1
WO2019054429A1 PCT/JP2018/033911 JP2018033911W WO2019054429A1 WO 2019054429 A1 WO2019054429 A1 WO 2019054429A1 JP 2018033911 W JP2018033911 W JP 2018033911W WO 2019054429 A1 WO2019054429 A1 WO 2019054429A1
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WO
WIPO (PCT)
Prior art keywords
link member
stroller
leg
front leg
handle
Prior art date
Application number
PCT/JP2018/033911
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
順一 浅野
Original Assignee
コンビ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コンビ株式会社 filed Critical コンビ株式会社
Priority to JP2019542276A priority Critical patent/JP6980302B2/ja
Priority to CN201880058756.8A priority patent/CN112203921B/zh
Publication of WO2019054429A1 publication Critical patent/WO2019054429A1/ja

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08Carriages 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

Definitions

  • the present invention relates to a stroller that can be deformed between a deployed state and a folded state.
  • a stroller having a handle, an armrest, a front leg and a rear leg (for example, JP2004-237784A) is widely available.
  • the rear end of the armrest is pivotally connected to the steering wheel.
  • the armrest has a pair of side wall portions and an upper wall portion connecting between the pair of side wall portions, and opens downward as a whole.
  • the rear leg and the front leg enter from below into the armrest and are pivotally attached to the armrest at its upper end.
  • Such front and rear legs can be pivoted in a large angular range with respect to the armrest, which can reduce the size of the stroller in the folded state.
  • the present invention has been made in consideration of these points, and it is an object of the present invention to reduce the size of the folded state of the stroller by increasing the pivotable angle between the components.
  • the first baby carriage according to the present invention is A stroller that is deformable between a deployed state and a folded state, With the handle, A first link member rotatably connected to the handle; A rear leg rotatably connected to the first link member; And a front leg rotatably connected to the rear leg, The rear leg extends from between a connection base connected to the first link member and the front leg, a connection position to the first link member in the connection base, and a connection position to the front leg. And.
  • the connecting base may have a longitudinal direction non-parallel to the extending direction of the rear leg.
  • At least a portion including the connection position of the first link member to the rear leg, the connection base of the rear leg, and the connection position of the front leg to the rear leg may be linearly arranged.
  • a first baby carriage according to the present invention comprises a second link member rotatably connected to the handle and the rear leg, and a first link rotatably connected to the front leg and the handle or the second link member.
  • the three link member may be further provided.
  • the front leg has a front leg frame having a pair of front leg sides connected to the rear leg and a front leg connecting portion connecting the pair of front leg sides, the front leg side and the pair And a plate member supported by at least a part of the front leg side of the front leg connecting portion to the front leg connecting portion.
  • the plate member has a gentle slope portion supported by at least the front leg connecting portion, and a steep slope portion connected to the gentle slope portion from the rear,
  • the steep slope portion may be inclined upward to the rear, and the inclination angle of the gentle slope portion with respect to the traveling surface may be smaller than the inclination angle of the steep slope portion with respect to the traveling surface.
  • the first baby carriage according to the present invention may further include a front wheel holder supported by the front leg and including a front wheel, and the gentle slope portion may be located above the front wheel.
  • a second baby carriage comprises: a baby carriage main body having the handle, the front leg, the rear leg, the first link member, the second link member, and the third link member; And a seat supported by the baby carriage body.
  • the first link member may have a holding member that detachably holds the seat.
  • the size of the folded state of the stroller can be reduced by increasing the pivotable angle between the components.
  • FIG. 2 is a side view showing a child seat attached to a seat of a vehicle.
  • FIG. 2 is a perspective view showing an entire configuration of an adapter.
  • FIGS. 1 and 2 show the entire configuration of the baby carriage 10.
  • the baby carriage 10 in the first embodiment is generally symmetrical about the center plane in the width direction along the front-rear direction.
  • the stroller 10 has a stroller main body 11 constituting a frame, and a seat 40 supported by the stroller main body 11. Further, the baby carriage body 11 is provided with a hood 100 so as to protect the baby sitting on the seat 40 from sunlight and wind.
  • FIG. 4 is a side view of the link member shown in FIG. 3 as viewed from the inside of the stroller 10 in the width direction of the stroller 10.
  • FIG. 6 shows the baby carriage 10 in a folded state.
  • 7 is a view corresponding to FIG. 4 and is a side view of the link member shown in FIG. 6 as viewed from the inside of the stroller 10 in the width direction of the stroller 10.
  • the stroller main body 11 is configured to be deformable between the unfolded state and the unfolded state as widely spread (for example, JP 2005-082082 A and JP 2006-117012 A), and is shown in FIGS. 1 and 2. It can be folded from the unfolded state to the folded state shown in FIG. 6 and can be unfolded from the unfolded state to the unfolded state.
  • the stroller main body 11 includes a handle 15, and the operator (a guardian) grips the handle 15 from the back side of the baby to steer the stroller 10, and the baby is directed forward in the traveling direction. It is possible to run.
  • front means the operator operating the stroller 10 in the unfolded state. More specifically, the “front-rear direction” of the stroller 10 is a direction connecting the lower left and the upper right of the sheet of FIG. 1 and corresponds to the left and right of the sheet of FIG. And “front” is the side to which the operator who steers the baby carriage 10 faces, unless otherwise instructed, and the lower left side of the paper surface in Fig.
  • the “vertical direction” of the stroller 10 is a direction orthogonal to the front-rear direction and orthogonal to the ground contact surface (traveling surface) S. Therefore, when the ground plane is a horizontal plane, the “vertical direction” refers to the vertical direction.
  • the “width direction” or the “vehicle width direction” is a lateral direction, and is a direction orthogonal to any of the “front-rear direction” and the “vertical direction”.
  • “right” and “left” also mean “right” and “left” in the lateral direction or width direction with respect to the operator who steers the stroller 10, respectively.
  • the term “longitudinal direction” with respect to the stroller 10 and the stroller main body 11 in the folded state is a direction perpendicular to both the “vertical direction” and the “width direction”, and corresponds to the left and right direction of the sheet of FIG. Do.
  • “front” is the side on which the front legs 22 described later are located, and the left side of the paper surface in FIG. 6 is the front side of the stroller 10.
  • “rear” is the side on which the steering wheel 15 is positioned, and the right side of the paper surface in FIG. 6 is the rear side of the stroller 10.
  • the baby carriage main body 11 includes a front leg 22 including a pair of front leg sides 23a disposed on the left and right, and a pair of rear legs 24 disposed on the left and right, respectively. It has a first link member 31 as a pair of side frame members disposed on the left and right, and a pair of second link members 32 and a pair of third link members 33 disposed on the left and right, respectively.
  • the front leg 22 has a front leg frame 23 including the pair of front leg sides 23a described above and a front leg connecting portion 23b connecting the pair of front leg sides 23a.
  • the front leg 22 also has a plate member 60 supported by the front leg frame 23.
  • a front wheel support (caster) 25 including a front wheel 25 a is provided at the lower end of the front leg frame 23, and a rear wheel 26 is provided at the lower end of the rear leg 24.
  • the stroller main body 11 supports a seat 40 disposed between the pair of front leg sides 23a and between the pair of rear legs 24.
  • the stroller 10 is configured as a three-wheeled vehicle having one front wheel 25a and two rear wheels 26.
  • the present invention is not limited to this, and for example, as shown in FIG. , And may be configured as a four-wheeled vehicle having two front wheels 25a and two rear wheels 26.
  • the handle 15 includes a pair of handle side portions 15a disposed on the left and right, and a handle intermediate portion 15b connecting between the pair of handle side portions 15a, It has a substantially U-shaped shape as a whole.
  • the lower end portion of the handle 15 is engaged with an engagement member 17 provided on an intermediate portion of the rear leg 24 in the baby carriage 10 in the deployed state.
  • an engagement member 17 provided on an intermediate portion of the rear leg 24 in the baby carriage 10 in the deployed state.
  • the handle 15 is provided on an operation member 18 slidably provided on the handle side portion 15a, and on the handle intermediate portion 15b so that sliding of the operation member 18 can be remotely controlled. And a remote control device 18a.
  • the operating member 18 is biased downward (toward the end of the U-shape) by a spring (not shown) provided in the handle side 15a.
  • the operation member 18 has a convex portion 18 b that protrudes toward the second link member 32 in the width direction of the stroller 10.
  • the convex portion 18 b cooperates with a locking member 19 described later to hold the stroller 10 in the unfolded state or the folded state.
  • the pair of first link members 31 is rotatably (swayably) connected to an intermediate portion of the handle side 15a disposed on the corresponding side (left or right). ing. As shown in FIG. 4, the first link member 31 is connected at its rear portion to the handle side 15 a via a shaft member 51 extending in the width direction of the stroller 10.
  • the 1st link member 31 is a straight rod-like member in the example of illustration, it is not restricted to this.
  • the first link member 31 can have various shapes. For example, like the conventional armrest described as the prior art, the first link member 31 has a pair of side walls and an upper wall portion connecting the pair of side wall portions, and opens downward as a whole. It is good also as composition. Thereby, the design freedom can be improved by improving the design freedom of the stroller 10.
  • the rear leg 24 has a connection base 24a at its upper end and a rear leg 24b extending from the connection base 24a.
  • a rear wheel 26 is provided at the lower end of the rear leg 24b.
  • connection base 24 a is rotatably (rockably) connected to the first link member 31 disposed on the corresponding side (left side or right side). Further, the connection base 24a is rotatably (swingably) connected to the front leg side 23a disposed on the corresponding side (left or right).
  • the rear leg 24 b extends from between the connection position to the first link member 31 in the connection base 24 a and the connection position to the front leg 22.
  • connection base 24 a has a longitudinal direction Da that is not parallel to the direction Db from which the rear leg 24 b extends.
  • the front portion of the first link member 31 is connected to one side portion (rear portion) of the connection base 24 a in the longitudinal direction Da via a shaft member 52 extending in the width direction of the stroller 10.
  • an upper end portion of the front leg 22 is connected to the other longitudinal side portion (forward portion) of the connection base 24 a via a shaft member 53 extending in the width direction of the stroller 10.
  • connection base 24a has the longitudinal direction Da
  • the interference between the rear leg 24b and the first link member 31 is effectively prevented, and the rotatable range of the rear leg 24 and the first link member 31 is large. can do.
  • interference between the rear leg 24 b and the front leg 22 can be effectively prevented, and the rotatable range of the rear leg 24 and the front leg 22 can be enlarged.
  • the first link member 31, the rear leg 24 and the front leg 22 can be brought close to each other, and the size of the stroller 10 in the folded state can be reduced. Further, as shown in FIG. 6 and FIG.
  • At least a portion including at least a portion 31 a including a connection position of the first link member 31 to the rear leg 24, a connection base 24 a of the rear leg 24, and a connection position to the rear leg 24 of the front leg 22. 22a are linearly arranged. Thereby, the operating force can be smoothly applied from the handle 15 to the front leg 22 via the first link member 31 and the rear leg 24. In addition, the force from the traveling surface S is smoothly transmitted from the front leg 22 to the handle 15 through the rear leg 24 and the first link member 31. Thereby, an appropriate operating force can be applied to the stroller 10 while grasping the state of the traveling surface S, and the maneuverability of the stroller 10 can be effectively improved.
  • the portion 31a, the connection base 24a, and the portion 22a are linearly arranged, but the present invention is not limited to this, and may be arranged in a continuous curved shape.
  • the second link member 32 will be described.
  • the second link member 32 on the left side is rotatably (swayably) connected to the handle side 15a on the left side of the handle 15 and the rear leg 24 on the left side.
  • the second link member 32 on the right side is rotatably connected (slidable) to the handle side 15a on the right side of the handle 15 and the rear leg 24 on the right side.
  • each second link member 32 includes a second link main body 32 a connected to the handle 15 and the rear leg 24.
  • Each second link member 32 also has an extension 32b extending from between the connecting position of the second link body 32a to the handle 15 and the connecting position to the rear leg 24.
  • the extension portion 32 b extends forward in the deployed state of the stroller 10.
  • Each second link main body 32a is, in part, in the lower portion of the handle side 15a (more specifically, between the lower end portion of the handle side 15a and the operation member 18) in the width direction of the stroller 10. It is connected via an extending shaft member 54. Further, in the other portions, each second link main body portion 32 a is connected to the middle portion of the rear leg 24 via a boss portion 55 extending in the width direction of the stroller 10.
  • the lock member 19 which protrudes toward the handle side 15a is provided in the part connected to the handle side 15a of each 2nd link main-body part 32a. As shown in FIG. 4, the lock member 19 has a shape in which several portions of a circle centered on the shaft member 54 are cut away when viewed from the width direction of the stroller 10.
  • the lock member 19 is provided with two recesses 19a and 19b extending in the radial direction of a circle centered on the shaft member 54 at different positions in the circumferential direction.
  • Each recess 19a, 19b is adapted to receive from below the projection 18b of the operation member 18 sliding along the handle 15 in the unfolded state or the folded state of the stroller 10. That is, as understood from FIGS.
  • the locking member 19 rotates with the second link member 32 when the stroller 10 is deformed from the deployed state to the folded state. Therefore, at this time, the attitude of the lock member 19 with respect to the handle 15 changes.
  • the recess 19a is positioned so as to be able to receive the protrusion 18b of the operation member 18 on the handle 15 when the stroller 10 is in the unfolded state (see FIG. 4).
  • the recess 19b is positioned so as to be able to receive the protrusion 18b of the operation member 18 on the handle 15 when the stroller 10 is in the folded state (see FIG. 7).
  • the convex portion 18b of the operation member 18 is received in the concave portion 19a, whereby the lock member 19 engages with the handle 15, and relative rotation between the second link member 32 and the handle 15 is realized. to bound.
  • the stroller 10 is held in the unfolded state.
  • the lock member 19 engages with the handle 15, and the relative link between the second link member 32 and the handle 15 Restrain movement. As a result, the stroller 10 is held in the folded state.
  • the third link member 33 will be described.
  • the left third link member 33 is rotatably connected (slidable) to the left second link member 32 and the left front leg side 23a.
  • the third link member 33 on the right side is rotatably (swayably) connected to the second link member 32 on the right side and the front leg side 23a on the right side.
  • the front leg 22 is pulled toward the handle 15 and the rear leg 24 via the third link member 33 when the stroller 10 is deformed from the deployed state to the folded state.
  • the dimension in the folded state of the baby carriage 10 can be miniaturized in the front-back direction.
  • Each third link member 33 is connected to the extension 32 b of the second link member 32 at a portion (rear portion) thereof via a shaft member 56 extending in the width direction of the stroller 10. Further, each third link member 33 is connected to an intermediate portion of the front leg side portion 23a at the other portion (front portion) via a shaft member 57 extending in the width direction of the stroller 10.
  • the baby carriage 10 in the folded state can be made more independent and independent.
  • the third link member 33 is connected to the second link member 32 at the above-mentioned extension 32b, whereby the front leg 22 is held by the front wheel 25a and the rear leg 24 in the folded state of the stroller 10. It can be more effectively prevented that the rear wheel 26 gets too close (see FIG. 6). Thereby, the baby carriage 10 in the folded state can be made more independent and independent.
  • the 3rd link member 33 is connected to the 2nd link member 32 in the example of illustration, it is not restricted to this.
  • the third link member 33 may be connected to the handle 15 so as to be rotatable (pivotable).
  • the plate member 60 As shown in FIG. 1, the plate member 60 of the front leg 22 is attached to the front leg frame 23.
  • the board member 60 prevents the foot of the baby from entering between the pair of front leg side portions 23 a when the baby gets in and on the baby carriage 10.
  • the plate member 60 has a gentle slope portion 60a supported by at least the front leg connecting portion 23b, and a steep slope portion 60b connected to the gentle slope portion 60a from the rear.
  • the gentle slope 60a and the steep slope 60b are inclined upward toward the rear, and the inclination angle of the gentle slope 60a with respect to the traveling surface S is smaller than the inclination angle of the steep slope 60b with respect to the traveling surface S.
  • the gentle slope portion 60 a can be used as a step or step when riding on the stroller 10.
  • the gentle slope portion 60a is disposed so as to be located above the front wheel 25a.
  • stability of the stroller 10 can be secured.
  • the inclination angle of the gentle slope 60a with respect to the traveling surface S is preferably 10 ° to 20 °.
  • the stability of the stroller 10 can be secured.
  • the plate member 60 is formed of, for example, a resin or the like.
  • the illustrated baby carriage main body 11 has a rear side connecting bar 27 which connects between the pair of rear legs 24 as a component extending in the width direction. Further, a guard member 28 is detachably provided between the connection bases 24 a of the pair of rear legs 24.
  • the seat 40 As shown in FIG. 1, the seat 40 is disposed between the pair of front leg sides 23 a and between the pair of rear legs 24 and supported by the stroller main body 11.
  • the seat 40 has a seat body 40a and a cushioned seat 90 mounted on the seat body 40a.
  • the seat body 40 a includes a seat support element 41 and a back support element 42.
  • the seat support element 41 and the back support element 42 are connected via the shaft member 56 that rotatably connects the second link member 32 and the third link member 33. Is connected rotatably (oscillating).
  • the seat support element 41 is integrally formed with the third link member 33.
  • the third link member 33 constitutes a side portion of the seat support element 41.
  • the seat support element 41 is located below the buttocks of the baby who got on the stroller 10. Also, the back support element 42 comes to be located behind the back of the baby who got on the stroller 10.
  • the seat support element 41 and the back support element 42 of the present embodiment are formed of a resin plate having a rectangular outline as a whole. The resin plate that forms the seat support element 41 and the back support element 42 is trimmed as needed for weight reduction and air permeability. Also, the back support element 42 is supported from below or behind by a cord 45 fixed at both ends to one and the other handle side 15a respectively. By adjusting the length of the strap 45, the angle (reclining angle) of the back support element 42 with respect to the seat support element 41 can be adjusted.
  • the seat main body 40a further includes a side support element 43 that is positioned to the side of the baby who got on the baby carriage 10, and a head side support that becomes on the head side of the baby who gets on the baby carriage 10 and lies. And an element 44.
  • the side support elements 43 pivotally connect the U-shaped end portions to the middle portion of the corresponding handle side 15a.
  • the head support element 44 is a pair of generally linear members. One end and the other end of each head support element 44 are pivotally connected to the back support element 42 and the side support element 43, respectively.
  • the stroller 10 (the stroller main body 11) having the entire configuration as described above can be folded by rotating the respective constituent members in the following manner.
  • the convex portion 18 b of the operation member 18 is received in one concave portion 19 a of the lock member 19.
  • the remote control device 18a controls the engagement between the second link member 32 and the handle 15 via the lock member 19 .
  • the operating member 18 is moved upward by the remote control device 18a.
  • the fixation of the second link member 32 to the handle 15 and the fixation of the second link member 32 to other components are released.
  • the lower end portion of the handle 15 is engaged with the engagement member 17 provided at the middle portion of the rear leg 24.
  • the handle 15 disposed at the rear position is once pulled back upward, and the engagement of the lower end portion of the handle 15 with the rear leg 24 is released. Thereafter, the handle 15 is pushed downward.
  • the first link member 31 rotates in the clockwise direction in FIGS. 2 and 4 with respect to the rear leg 24. Thereby, the handle 15 and the rear leg 24 approach (refer to FIG. 6 and FIG. 7).
  • the second link member 32 operates with the handle 15.
  • the second link member 32 pivots in the clockwise direction in FIGS. 2 and 4 with respect to the rear leg 24.
  • the third link member 33 is pulled rearward.
  • the baby carriage 10 is the baby carriage 10 that can be deformed between the unfolded state and the folded state, and is rotatably connected to the handle 15 and the handle 15
  • a first link member 31, a rear leg 24 rotatably connected to the first link member 31, and a front leg 22 rotatably connected to the rear leg 24 are provided.
  • the rear leg 24 extends from between the connection base 24 a connected to the first link member 31 and the front leg 22 and the connection position to the first link member 31 in the connection base 24 a and the connection position to the front leg 22.
  • a rear leg 24b is the baby carriage 10 that can be deformed between the unfolded state and the folded state, and is rotatably connected to the handle 15 and the handle 15
  • the rear leg 24 extends from between the connection base 24 a connected to the first link member 31 and the front leg 22 and the connection position to the
  • the rear leg 24 and the first link member 31 can be pivoted in a large angle range so that the rear leg 24 and the first link member 31 approach.
  • the rear legs 24 and the front legs 22 can be pivoted in a large angular range so that the rear legs 24 and the front legs 22 approach.
  • the first link member 31, the rear leg 24 and the front leg 22 can be made to approach, and the size of the stroller 10 in the folded state can be reduced.
  • various shapes can be given to the first link member 31.
  • the first link member 31 can be configured as a rod-like member. Thereby, the design freedom can be improved by improving the design freedom of the stroller 10.
  • connection base 24a has the longitudinal direction Da which is not parallel to the direction Db from which the rear leg 24b extends.
  • the connection base 24 a having the longitudinal direction Da, it is possible stably to increase the rotatable range of the rear leg 24 and the first link member 31.
  • FIG. 6 and FIG. 7 forming a gap between the rear leg 24 and the first link member 31 in a state where the rear leg 24 and the first link member 31 are made to approach by relative rotation. it can.
  • a gap can be formed between the rear leg 24 and the front leg 22 in a state where the rear leg 24 and the front leg 22 are brought close by relative rotation.
  • At least a portion 22a including the position is linearly aligned.
  • At least a portion 31a including a connection position of the first link member 31 to the rear leg 24, a connection base 24a of the rear leg 24, and at least a portion 22a including a connection position of the front leg 22 to the rear leg 24 are aligned.
  • the force from the traveling surface S is smoothly transmitted from the front leg 22 to the handle 15 through the rear leg 24 and the first link member 31.
  • an appropriate operating force can be applied to the stroller 10 while grasping the state of the traveling surface S, and the maneuverability of the stroller 10 can be effectively improved.
  • the second link member 32 rotatably connected to the handle 15 and the rear leg 24, and the front leg 22 and the handle 15 or the second link member 32 can be rotated respectively.
  • the front leg 22 is drawn to the handle 15 and the rear leg 24 via the third link member 33.
  • the dimensions of the stroller 10 in the folded state can be reduced in the front-rear direction and in the vertical direction.
  • the front leg 22 includes a front leg frame 23 having a pair of front leg sides 23a connected to the rear leg 24 and a front leg connecting portion 23b connecting the pair of front leg sides 23a; And a plate member 60 supported by at least a part of the side 23a and the connecting position of the pair of front leg sides 23a to the front leg connecting portion 23b. This can effectively prevent the foot from entering between the pair of front leg sides 23a.
  • the plate member 60 has the gentle slope portion 60a supported by at least the front leg connecting portion 23b, and the steep slope portion 60b connected to the gentle slope portion 60a from the rear,
  • the gentle slope 60a and the steep slope 60b are inclined upward toward the rear, and the inclination angle of the gentle slope 60a with respect to the traveling surface S is smaller than the inclination angle of the steep slope 60b with respect to the traveling surface S.
  • the gentle slope portion 60a can be used as a step or step when riding on the stroller 10.
  • the baby carriage 10 is supported by the front leg 22, and further includes a front wheel holding body 25 including the front wheel 25a, and the gentle slope portion 60a may be located above the front wheel 25a.
  • the gentle slope portion 60a is used as a step or a step, stability of the stroller 10 can be secured.
  • the stroller 10 is configured as a tricycle, the stroller 10 can be effectively stabilized and is effective.
  • FIGS. 8 to 13 differs from the first embodiment in the following points. That is, the baby carriage 110 is configured as a four-wheeled vehicle. Further, the first link member 310 has the holding member 130, and the seat 140 is detachably supported by the stroller main body 111 via the holding member 130. However, the other configurations can be configured in the same manner as the first embodiment.
  • parts that can be configured similarly to the above-described first embodiment will be described with respect to corresponding parts in the above-described first embodiment. The same reference numerals as the reference numerals used will be used, and duplicate explanations will be omitted.
  • FIG. 8 and 9 are diagrams showing the entire configuration of the baby carriage 110.
  • FIG. FIG. 10 shows a connection portion between the seat 140 and the baby carriage body 111.
  • the seat 140 has a main frame member 141, a cloth material 142 attached to the main frame member 141, and a connection member 143 connected to the main frame member 141.
  • the first link member 310 has the first link main body portion 31 configured similarly to the first link member 31 shown in FIG. 1 and the holding member 130 for detachably holding the seat 140. doing.
  • the holding member 130 has a connection portion (housing portion) 131 having a bottom portion 131 a and side walls 131 b, 131 c, 131 d, and 131 e, and an attachment that extends from the connection portion 131 along the first link main portion 31. And a part 132.
  • the holding member 130 is fixed to the first link main body portion 31 at the attachment portion 132.
  • the holding member 130 is fixed so that the internal space of the connection portion 131 is opened upward in the unfolded state of the stroller 10.
  • the side walls 131b and 131d facing the front or the rear of the connection portion 131 are provided with engagement holes 133 which are engaged with a projection 148 of a connection member 143 of the seat 40 described later.
  • the main frame member 141 has a rectangular frame as a whole.
  • the main frame member 141 has two substantially U-shaped frame elements 141a and 141b as a whole, and a pair of connecting members 141c connecting the two frame elements 141a and 141b.
  • the foot side frame element 141a is disposed on the side on which the foot of the infant is to be disposed
  • the head side frame element 141b is disposed on the side on which the head of the infant is to be disposed.
  • the U-shaped end of the foot-side frame element 141a and the U-shaped end of the head-side frame element 141b are connected by a connecting member 141c disposed on the corresponding side.
  • a guard member 128 is provided between the pair of connecting members 141c.
  • the base of the hood 100 is connected to the connecting member 141 c.
  • the connecting member 143 is connected to the connecting member 141 c from the outside in the width direction of the stroller 10.
  • connection member 143 shows the connecting member 143.
  • FIG. 12A shows the connecting member 143.
  • the connection member 143 has a connection portion (connection main portion) 146 connected to the connection member 141 c of the main frame member 141 and an attachment portion 147 extending from the connection portion 146.
  • the attachment portion 147 extends to the side of the main frame member 141 opposite to the side on which the guard member 128 is provided, and is received by the connection portion 131 of the holding member 130.
  • the attachment portion 147 has a shape corresponding to the connection portion (housing portion) 131 of the holding member 130, and has side surfaces 147b, 147c, 147d, and 147e.
  • the attachment portion 147 has a protrusion 148 on one side 147 b of the side surfaces 147 b and 147 d facing in the front-rear direction.
  • the protrusion 148 is provided at a position corresponding to the engagement hole 133 of the holding member 130, and engages with the engagement hole 133.
  • the projecting portion 148 is accommodated inside the attachment portion 147 by operating the operation device 149 provided in the connection portion 146. Thereby, the engagement with the engagement hole 133 can be released, and the seat 140 can be removed from the holding member 130.
  • connection member 143 and in particular the projection 148 and the operating device 149, will be described in more detail.
  • 12B and 12C show the inside of the connection member 143.
  • the connection member 143 has a housing portion 143a for housing the protrusion 148 and the operation device 149.
  • the housing portion 143 a constitutes the connection portion 146 and the attachment portion 147.
  • a first opening 143b is provided in a portion that forms the connection portion 146 of the storage portion 143a, in a region facing upward from one side in the front-rear direction (side of the side surface 147b) in the unfolded state of the baby carriage 110.
  • a second opening 143 c is provided in a portion forming the side surface 147 b of the mounting portion 147 of the housing portion 143 a.
  • a protrusion guide wall 147g extending in the front-rear direction in the unfolded state of the baby carriage 110 and an action part guide wall 147h extending in the up-down direction in the unfolded state of the baby carriage 110 are formed on the inner side surface of the attachment portion 147.
  • the protrusion 148 is a plate-like member.
  • the projecting portion 148 is disposed in the mounting portion 147 so as to extend in the front-rear direction in the deployed state of the baby carriage 110 and to be movable along the projecting portion guide wall 147g.
  • the protrusion 148 is biased toward the second opening 143 c by the protrusion biasing means 148 s disposed in the mounting portion 147. Therefore, when no force is applied to the protrusion 148, one end 148a of the protrusion 148 on the second opening 143c side protrudes out of the mounting portion 147 through the second opening 143c.
  • a protrusion 148 c is formed which protrudes outward in the width direction of the stroller 110 and on which the operation device 149 acts.
  • the surface of the convex portion 148c facing the second opening 143c forms an operating surface 148d on which the operating device 149 acts.
  • the working surface 148d is inclined upward toward the second opening 143c.
  • the operating device 149 includes an operating lever 149 a and an operating portion 149 b that acts on the projecting portion 148 along with the operation of the operating lever 149 a.
  • the operation lever 149a is rotatably connected at its intermediate portion to a shaft member 149x extending in the width direction of the stroller 110 in the housing portion 143a.
  • One end 149 c of the operation lever 149 a is exposed to the outside of the connection portion 146 through the first opening 143 b.
  • the other end 149 d of the operation lever 149 a is provided with a convex portion 149 e extending outward in the width direction of the stroller 110.
  • an operation lever biasing means 149s is disposed in the connection portion 146.
  • the operation lever biasing means 149s holds the operation lever 149a in the posture shown in FIG. 12B, specifically, one end 149c of the operation lever 149a is positioned above the other end 149d in the unfolded state of the baby carriage 110. Do.
  • the action portion 149 b extends substantially in the vertical direction in the unfolded state of the stroller 110.
  • the upper end 149 f of the action portion 149 b is provided with an opening 149 g penetrating in the width direction of the stroller 110.
  • the convex portion 149e of the operation lever 149a is inserted through the opening 149g.
  • the upper end 149f of the action portion 149b is swingably connected to the operation lever 149a.
  • the lower half of the action portion 149b extends along the action guide wall 147h and moves along the action guide wall 147h.
  • the lower end 149g of the action portion 149b is provided with an inclined surface 149h which is inclined corresponding to the action surface 148d of the protrusion 148. In the unfolded state of the baby carriage 110, the inclined surface 149h is inclined upward toward the second opening 143c.
  • the operation lever 149a When no force is applied to the operation lever 149a, the operation lever 149a is maintained at the position shown in FIG. 12B by the operation lever biasing means 149s, whereby the operation portion 149b is also maintained in the position shown in FIG. 12B. In this case, since the action part 149b does not act on the protrusion 148, the protrusion 148 is also maintained in the position shown in FIG. 12B by the protrusion biasing means 148s. Therefore, one end 148a of the protrusion 148 protrudes from the attachment portion 147 through the second opening 143c. On the other hand, when a force is applied to the operation lever 149a and the operation lever 149a turns from the position shown in FIG. 12B to the position shown in FIG.
  • the action portion 149b connected to the other end 149d of the operation lever 149a rises and inclines The face 149h rises.
  • the action surface 148 d of the protrusion 148 is pushed in a direction away from the second opening 143 c, and one end 148 a of the protrusion 148 is retracted into the attachment portion 147.
  • the rotational movement of the operation lever 149a is converted into the vertical linear movement of the action portion 149b, and further converted into the longitudinal linear movement of the projection 148.
  • the engagement between the protrusion 148 of the connection member 143 and the engagement hole 133 of the holding member 130 can be released.
  • the seat 140 can be connected to the holding member 130 even if the front and back direction of the seat 140 is switched. Therefore, in FIG. 8, the seat 140 is connected to the holding member 130 with the head side frame element 141 b disposed on the side of the handle 15, but the foot side frame element 141 a is disposed on the side of the handle 15. It is connectable to the holding member 130 also in the state.
  • the first link main body portion 31 tilts rearward.
  • the holding member 130 fixed to the first link main body portion 31 is also inclined rearward
  • the main frame member 141 of the seat 140 supported by the holding member 130 is also inclined rearward.
  • the seat 140 in particular, the main frame member 141 moves rearward. Accordingly, even in the folded state, the baby carriage main body 111 can stably support the seat 140, and the folded baby carriage 110 can be made to stand on its own.
  • the baby carriage 110 includes the handle 15, the front leg 22, the rear leg 24, the first link member 310, the second link member 32, and the third link member. And 33, and a seat 140 supported by the stroller main body 111.
  • the first link member 310 has a holding member 130 for holding the seat 140 in a removable manner.
  • the handle 15 can be lowered downward while approaching the rear leg 24 in the transition from the deployed state to the folded state.
  • the dimensions of the stroller 110 in the folded state can be reduced in the front-rear direction and the vertical direction.
  • the first link member 310 having the holding member 130 is tilted backward, and the components of the seat 140 supported on the first link member 310 are moved backward.
  • the baby carriage body 111 can stably support the seat even in the folded state, and the folded baby carriage 110 can be made to stand on its own.
  • the seat 240 includes a child seat 250 and an adapter 260 for detachably connecting the child seat 250 to the baby carriage body 111.
  • the seat 240 includes a child seat 250 and an adapter 260 for detachably connecting the child seat 250 to the baby carriage body 111.
  • other configurations can be configured in the same manner as the second embodiment.
  • parts that can be configured similarly to the above-described second embodiment will be described with respect to corresponding parts in the above-described second embodiment.
  • the same reference numerals as the reference numerals used will be used, and duplicate explanations will be omitted.
  • FIG. 14 is a perspective view showing an entire configuration of the baby carriage 210.
  • FIG. 15 is a side view showing a child seat 250 attached to a seat 200 of a vehicle.
  • FIG. 16 is a side view showing the adapter 260 held by the holding member 130 and the child seat 250 supported by the adapter 260.
  • FIG. 17 is a perspective view showing the overall configuration of the adapter 260.
  • FIG. 18A and 18B show the inside of the connecting member 263.
  • FIG. FIG. 19 is a side view showing the baby carriage 210 shown in FIG. 14 in a folded state.
  • a child seat 250 is disposed and used on a seat 200 of a vehicle, for example, a car.
  • the child seat 250 is a device for allowing a child (such as an infant, a child, a young person such as a child) to properly and safely get in a vehicle including a seat (vehicle seat) 200 and a seat belt 201 designed for adults .
  • the child seat 250 described herein is adapted to be attached to the seat 200 in the “rearward facing state”. In the “rearward facing state”, as shown in FIG. 15, the child seated in the child seat 250 is directed to the rear of the car.
  • the seat belt 201 refers to a shoulder belt 202 extending from the shoulder on one side (right side in the illustrated example) to the waist on the other side (left side in the illustrated example), and the waist from the one side to the other side A so-called three-point seat belt having a waist belt 203 extending to the waist of the body.
  • the seat belt 201 is formed of a single belt-like member, and the tongue 204 is inserted therethrough.
  • the tongue 204 bends the single belt-like member to divide the seat belt 201 into a shoulder belt 202 and a waist belt 203.
  • a buckle 205 is further provided on the other side of the seat 200. The tongue 204 is locked to the buckle 205 so that the body of a person sitting on the seat 200 is fixed to the seat 200 by the seat belt 201.
  • the terms “front”, “back”, “right”, “left”, “horizontal”, “upper” and “lower” as used with respect to the child seat 250 and its components are specifically indicated If not, it means “front”, “rear”, “right”, “left”, “horizontal”, “upper” and “lower” based on the child seated in the child seat 250, respectively.
  • the “width direction” of the child seat 250 and its components is the direction connecting “left” and “right”, ie, “lateral direction”.
  • the “height direction” of the child seat 250 and its components is the “vertical direction”.
  • the “front-rear direction” of the child seat 250 and its components is the direction connecting “front” and “rear”, and in the illustrated example, in the “front-rear direction” or “traveling direction” of the vehicle and the stroller 210. Also matches.
  • the child safety seat 250 has a child safety seat body 251 including a seat 252 on which a child can sit or receive a child. Although not shown, a cover member having a cushioning property is attached to the seat portion 252, and a child's belt is attached to the child seat body 251.
  • the seat 252 is a part on which a child sits or receives a child.
  • the seat portion 252 has a seat portion 254 and a back portion 255, and side portions 256 located on both sides of the seat portion 254 and the back portion 255, respectively.
  • the seat 254 comes to face the buttocks of the child from below.
  • the back 255 comes to face the child's back from the rear.
  • the back 255 is formed with a child belt hole 257 through which a child belt penetrates.
  • Each side 256 has a notch 258. As shown in FIG. 15, the notch 258 guides the seat belt 201 to a predetermined path. As shown in FIG.
  • each side portion 256 of the seat portion 252 is provided with an engagement convex portion 259 which protrudes outward in the width direction of the seat portion 252 and engages with the adapter 260 at the center in the longitudinal direction. It is done.
  • the engagement convex portion 259 is designed to be retracted to the inside of each side portion 256 by operating an operation device (not shown).
  • the engagement between the child seat 250 and the adapter 260 (more specifically, the engagement between the engagement projection 259 and the engagement recess 264 of the adapter 260 described later) can be released, and the child seat 250 can be It can be removed from the adapter 260.
  • the adapter 260 detachably connects the child seat 250 and the baby carriage body 111.
  • the terms “front”, “rear”, “horizontal”, “upper”, “lower”, “back and forth”, and “up and down” as used with respect to adapter 260 and its components are: Unless otherwise instructed, “front”, “rear”, “horizontal”, “upper”, “lower”, “front and back” based on the operator operating the stroller main body 111 in the deployed state to which the adapter 260 is attached. It means “direction” and “vertical direction”. More specifically, the “front-rear direction” of the adapter 260 is the left and right direction of the paper surface in FIG.
  • the “front-rear direction” also corresponds to the “front-rear direction” or the “traveling direction” of the stroller 210 in the illustrated example.
  • “front” is the side to which the operator who steers the stroller main body 111 to which the adapter 260 is attached is directed, unless otherwise instructed, and the left side of the paper in FIG. 16 and the lower left side of the paper in FIG. It is on the front side of 260.
  • the “vertical direction” of the adapter 260 is a direction orthogonal to the front-rear direction and orthogonal to the ground contact surface (running surface) S.
  • the “vertical direction” refers to the vertical direction.
  • the “width direction” is a lateral direction, and is a direction orthogonal to any of the “front-rear direction” and the “vertical direction”.
  • the adapter 260 includes a pair of side support portions 261, a connecting portion 262 connecting the pair of side support portions 261, and a pair of side support portions 261 connected from the outside in the width direction. And a connecting member 263.
  • the side support part 261 is disposed on the widthwise outer side of the child seat 250 so as to face the side part 256 of the seat part 252.
  • the connecting portion 262 is disposed below the child seat 250.
  • An engagement recess 264 is provided on the side of each side support portion 261 facing the side portion 256. The engagement recess 264 engages with the engagement projection 259 of the child seat 250 when the adapter 260 is attached to the child seat 250.
  • connection member 263 includes a connection portion (connection main body portion) 266 connected to the side support portion 261 and an attachment portion 267 extending downward from the connection portion 266.
  • the attachment portion 267 is accommodated in the connection portion 131 of the holding member 130 from above when the adapter 260 is connected to the baby carriage main body 111 in the unfolded state.
  • the attachment portion 267 has a shape corresponding to the connection portion (housing portion) 131 of the holding member 130, and has side surfaces 267b, 267c, 267d, and 267e.
  • the mounting portion 267 has a protrusion 268 on the side surface 267 b facing the front.
  • the protrusion 268 is provided at a position corresponding to the engagement hole 133 of the holding member 130 and engages with the engagement hole 133.
  • the connection member 263 is stably held by the holding member 130.
  • the projecting portion 268 is accommodated inside the attachment portion 267 by operating the operation device 269 provided in the connection portion 266. Thereby, the engagement between the holding member 130 and the engagement hole 133 can be released, and the adapter 260, and hence the seat 240 consisting of the adapter 260 and the child seat 250 can be removed from the holding member 130.
  • connection member 263 will be described in more detail, in particular the projection 268 and the operating device 269.
  • the connection member 263 includes a protrusion 268 and a receiving portion 263a for receiving the operating device 269.
  • the housing portion 263 a constitutes a connection portion 266 and an attachment portion 267.
  • a first opening 263 b is provided in a region facing the upper side in the unfolded state of the baby carriage 210 at a portion forming the connection portion 266 of the housing portion 263 a.
  • a second opening 263c is provided in a portion which makes the side surface 267b of the attachment portion 267 of the housing portion 263a.
  • a protrusion guide wall 267 g extending in the front-rear direction in the unfolded state of the baby carriage 210 and an action part guide wall 267 h extending in the up-down direction in the unfolded state of the baby carriage 210 are formed on the inner side surface of the attachment portion 267.
  • the protrusion 268 is a plate-like member.
  • the projecting portion 268 is disposed in the attachment portion 267 so as to extend in the front-rear direction in the deployed state of the baby carriage 210 and to be movable along the projecting portion guide wall 267 g.
  • the protrusion 268 is biased toward the second opening 263 c by a protrusion biasing means 268 s disposed in the mounting portion 267. Therefore, when no force is applied to the protrusion 268, one end 268a of the protrusion 268 on the second opening 263c side protrudes out of the attachment portion 267 through the second opening 263c.
  • a protrusion 268c that protrudes outward in the width direction and on which the operation device 269 acts is formed.
  • the surface of the convex portion 268c facing the second opening 263c forms an operating surface 268d on which the operating device 269 acts.
  • the working surface 268d is inclined upward and opposite to the second opening 263c.
  • the operating device 269 has an action portion 269a extending generally in the vertical direction in the unfolded state of the stroller 210, and action portion urging means 269s urging the action portion 269a upward.
  • the upper end 269b of the action portion 269a is connected to the connection portion 266 through the first opening 263b in a state where no force is applied to the action portion 269a by the action portion 269a being biased by the action portion biasing means 269s.
  • Project outside of The upper end 269 b serves as an operation button 269 b for operating the operation device 269.
  • the lower half of the action portion 269a extends along the action guide wall 267h and is adapted to move along the action guide wall 267h.
  • the lower end 269 c of the action portion 269 a is provided with an inclined surface 269 h which is inclined corresponding to the action surface 268 d of the protrusion 268.
  • the inclined surface 269h is inclined upward and to the opposite side to the second opening 263c.
  • the operation unit 269a When no force is applied to the operation button 269b, the operation unit 269a is maintained at the position shown in FIG. 18A by the operation unit urging means 269s. In this case, since the action portion 269a does not act on the protrusion 268, the protrusion 268 is also maintained at the position shown in FIG. 18A by the protrusion biasing means 268s. Therefore, one end 268a of the protrusion 268 protrudes from the attachment portion 267 through the second opening 263c. On the other hand, when a force is applied to the operation button 269b and the action portion 269a is pushed down from the position shown in FIG. 18A to the position shown in FIG. 18B, the inclined surface 269h is lowered.
  • the action surface 268 d of the protrusion 268 is pushed in the direction away from the second opening 263 c, and the one end 268 a of the protrusion 268 retracts into the mounting portion 267.
  • the vertical linear motion of the action portion 269 a is converted to the longitudinal linear motion of the projection 268.
  • the first link main body portion 31 tilts rearward.
  • the holding member 130 fixed to the first link main body portion 31 is also inclined rearward, and the adapter 260 of the seat 240 supported by the holding member 130 is inclined rearward together with the child seat 250.
  • the seat 240 moves rearward.

Landscapes

  • 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)
PCT/JP2018/033911 2017-09-13 2018-09-13 乳母車 WO2019054429A1 (ja)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021130420A (ja) * 2020-02-20 2021-09-09 コンビ株式会社 乳母車
JP7382688B1 (ja) 2022-07-13 2023-11-17 コンビ株式会社 乳母車

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151844A (ja) * 1974-10-31 1976-05-07 Tookyoo Bebii Kk Bebiikaa
JPH04154477A (ja) * 1990-10-16 1992-05-27 Konbi Kk ベビーカーの折り畳み機構
JP2008174011A (ja) * 2007-01-16 2008-07-31 Combi Corp ベビーカー

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5138231B2 (ja) * 2007-01-16 2013-02-06 コンビ株式会社 キャスタ及び該キャスタを有するベビーカー
JP5449752B2 (ja) * 2008-12-03 2014-03-19 コンビ株式会社 ベビーカー
JP5944141B2 (ja) * 2011-11-07 2016-07-05 コンビ株式会社 ベビーカー
CN103507846B (zh) * 2013-09-05 2016-04-13 好孩子儿童用品有限公司 儿童推车

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151844A (ja) * 1974-10-31 1976-05-07 Tookyoo Bebii Kk Bebiikaa
JPH04154477A (ja) * 1990-10-16 1992-05-27 Konbi Kk ベビーカーの折り畳み機構
JP2008174011A (ja) * 2007-01-16 2008-07-31 Combi Corp ベビーカー

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021130420A (ja) * 2020-02-20 2021-09-09 コンビ株式会社 乳母車
JP7382688B1 (ja) 2022-07-13 2023-11-17 コンビ株式会社 乳母車
WO2024013906A1 (ja) * 2022-07-13 2024-01-18 コンビ株式会社 乳母車

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CN112203921A (zh) 2021-01-08
TWI740062B (zh) 2021-09-21
JPWO2019054429A1 (ja) 2020-10-15
JP6980302B2 (ja) 2021-12-15
TW201930119A (zh) 2019-08-01

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