TWI680073B - Pushchair - Google Patents

Abstract

The stroller includes a frame body supporting front wheels and rear wheels, and a seat supported by the frame body. The frame body has: a front foot frame supporting the front wheel; a handle frame that can be slidably moved to the front foot frame by being mounted on the front foot frame and a sliding member; a rear foot frame that supports the rear wheel and can be relatively rotationally connected to the sliding member; and The connecting rod bracket can relatively rotate to connect the middle part of the upper sliding part and the rear foot frame.

Description

Pushchair

The invention relates to a foldable baby carriage which can be deformed between a use state and a folded state.

For example, as disclosed in JP2004-58986A or JP2013-95237A, foldable strollers are widely used. If the stroller disclosed in JP2004-58986A or JP2013-95237A is deformed from the use state to the folded state, it is folded in such a manner that the front footrest and the rear footrest will approach and the size in the front-back direction becomes smaller.

Recently, in order to improve the convenience of the stroller, a lightweight stroller with a small number of parts has been pursued. However, the number of stroller parts disclosed in JP2004-58986A or JP2013-95237A is large, and it cannot fully meet the demand for weight reduction.

The present invention has been made in consideration of this point, and aims to provide a lightweight stroller with a small number of parts.

The stroller of the present invention is a foldable stroller that can be deformed between a use state and a folded state. The stroller includes a frame body supporting front wheels and rear wheels, and a seat supported by the frame body. The frame body has: A front foot frame supporting the front wheel; a handle frame that is mounted on the front foot frame through an upper sliding member and a sliding member to be able to slide and move the front foot frame; a rear foot frame that supports the rear wheel and can be relatively rotationally connected to the sliding member; And the link bracket, which is relatively rotationally connected to the upper sliding member on one side, and is relatively rotationally connected to the rear footrest, which is closer to the rear wheel than the portion connecting the sliding member. section.

In the stroller of the present invention, the frame body may further include a seat support body supported by the sliding member, and the seat is erected between the seat support body and the handle frame.

In the stroller of the present invention, the seat support may be a seat support frame including left and right front and rear frame members supported by the left and right sliding members and a rear portion connecting the left and right front and rear frame members. The rear connecting frame member, the seat is erected on each of the left and right front rear frame members and the rear connecting frame member.

In the stroller of the present invention, the front portion of each of the front and rear frame members may be formed as a free end, and each of the front and rear frame members is an intermediate portion between the front portion and the rear portion thereof, and is supported by the corresponding sliding member through the latch. .

In the baby carriage of the present invention, the upper slide member may be fixed to the front foot frame, and a guide hole inserted into the handle frame with a gap may be provided, and the slide member is fixed to the handle frame, and the foregoing The front stand has a guide hole inserted with a gap.

The stroller of the present invention may further include a locking mechanism for restricting the sliding member by the front footrest in the use state, and the locking mechanism is provided with an engaging portion provided on the front footrest and provided on the front footrest. The sliding part is engaged with the engaged part.

The stroller of the present invention may further include a locking mechanism for restricting the upper slide member by the handle frame in the use state. The locking mechanism is provided with an engaging portion provided on the handle frame, and The engaged portion of the upper slide member engaged with the engaging portion.

It is also possible that if the shape is changed from the use state to the folded state, the handle frame is slid on the front frame so as to increase the overlap with the front frame, and the rear frame is aligned so that the rear wheel approaches the handle frame. The sliding member rotates relatively.

According to the present invention, it is possible to provide a lightweight stroller with a small number of parts.

Forms used to implement the invention

Hereinafter, an embodiment of the present invention and a modification example thereof will be described with reference to FIGS. 1 to 20. 1 and 2 are a perspective view and a side view, respectively, of a stroller 1 according to an embodiment. The stroller 1 is a foldable stroller, and the stroller 1 in the folded state is reduced in size in the vertical direction d2. Furthermore, in the stroller 1, a seat (seat unit) 3 is attached to the frame body 2 supporting the front wheels 5 and the rear wheels 6.

In addition, in this specification, the terms "front", "rear", "up" and "down" of the stroller 1 and the frame body 2 refer to the infant in the use state C1 unless otherwise specified. "Front", "Back", "Up" and "Down" of infants and young children in car 1. Therefore, the "front-rear direction d1" is the direction corresponding to the lower left and upper right of the connection sheet in Fig. 1. In addition, as long as there is no special instruction, the so-called "front" is the side facing the infant and the infant, that is, the lower left side of the paper surface in Fig. 1 is the "front side". On the other hand, the "up and down direction d2" is a direction orthogonal to the front-rear direction d1 and orthogonal to the ground plane of the stroller 1. Therefore, when the ground plane of the stroller 1 is a horizontal plane, the so-called "up and down direction d2" means the vertical direction. The "width direction (horizontal direction) d3" is a direction orthogonal to any of the "front-rear direction d1" and the "up-down direction d2". Furthermore, "right" and "left" also mean "right" and "left" in the width direction d3 based on the infants and infants who ride the stroller 1, respectively.

3 and 4 are a perspective view and a side view, respectively, showing the baby carriage 1 shown in FIG. 1 when the seat 3 is removed. As shown in FIGS. 3 and 4, as members constituting the frame body 2, left and right front foot stands 10 supporting the front wheels 5 and left and right rear foot stands 20 supporting the rear wheels 6 are provided. Each of the front legs 10 supports the front wheels 5 rotatably and rotatably through the casters 7a. On the other hand, each rear footrest 20 supports the rear wheels 6 rotatably and rotatably through the wheel holding bodies 7b.

The handle frame 50 is slidably mounted on each of the front legs 10 via the upper slider 30 and the lower slider 40. That is, the handle frame 50 is spaced apart from the left and right front stand 10 and can be relatively moved along the left and right front stand 10.

As a member constituting the handle frame 50, a pair of left and right front guide portions 51 are provided, and upper ends of the pair of front guide portions 51 are connected by an operation portion 52. The operation unit 52 is a portion that is operated by a user to move the baby carriage 1 in the use state C1 shown in FIGS. 1 to 4. In the example shown in the figure, a curved operation portion 52 is provided between the upper ends of the linear left and right front guide portions 51, and the handle frame 50 is substantially U-shaped.

The left and right front guides 51 are respectively inserted into the upper slider 30 and the lower slider 40 on the corresponding sides thereof. The upper slider 30 and the lower slider 40 are members that connect the handle frame 50 and the front leg frame 10 so as to be slidably moved. As shown in FIGS. 3 and 4, the upper slider 30 is disposed on the upper side than the slider 40, that is, a position close to the operation portion 52.

The upper slider 30 is fixed to the upper end of the front leg frame 10. Therefore, the upper slider 30 can move in conjunction with the front stand 10. On the other hand, in the upper slider 30, a guide hole 31 is provided at a position more forward than the fixed position of the upper end of the front leg 10 in the side view shown in FIG. 4. The front guide portion 51 of the handle frame 50 is inserted into the guide hole 31 with a gap. By inserting the front guide portion 51 into the guide hole 31 with a gap, the handle frame 50 can be smoothly moved along the front foot frame 10.

On the other hand, the slider 40 is fixed to the lower end of the front guide portion 51 of the handle frame 50. Therefore, the slider 40 moves in conjunction with the handle frame 50. On the other hand, in the slider 40, a guide hole 41 is provided at a position rearward from the fixed position of the lower end of the front guide portion 51 in the side view shown in FIG. The front stand 10 is inserted into the guide hole 41 with a gap. The front frame 10 is inserted into the guide hole 41 with a gap, and the handle frame 50 can be smoothly moved along the front frame 10.

Moreover, in the slider 40, the upper end of the rear leg 20 is pivotally connected at a position rearward than the guide hole 41 in the side view shown in FIG. In this case, the upper end of the rear tripod 20 rotates in conjunction with the relative position of the slider 40 to the front tripod 10.

A link bracket 60 is bridged between the upper slider 30 and the rear leg 20. The left and right link brackets 60 extend between the upper sliding member 30 and the rear foot frame 20 on the corresponding side, and can relatively rotate the upper sliding member 30 and the rear foot frame 20 respectively.

As shown in FIG. 4, the position of each link bracket 60 connected to the rear foot frame 20 is an intermediate portion between the portion of the rear foot frame 20 that connects the slider 40 and the portion that supports the rear wheel 6. In this case, if the stroller 1 in use is viewed from the side, the relative rotation center RC2 of the link bracket 60 and the rear leg 20 is located more than the relative rotation center RC1 of the rear leg 20 and the slider 40. It is rearward and downward, and is further rearward and lower than the relative rotation center RC3 of the link bracket 60 and the upper slider 30.

As one example, the link bracket 60 may be made of a metal plate body such as aluminum alloy, and the front foot frame 10, the rear foot frame 20, and the handle frame 50 may be made of metal such as aluminum alloy. Made of pipe body. The upper slider 30 and the lower slider 40 may be formed of a resin-made molded part.

Returning to FIG. 4, a slide piece 40 is provided with a protruding piece 42 protruding upward along the front leg 10. Furthermore, a locking pin 13 extending from the front leg 10 is inserted into the protruding piece 42. In FIG. 5, a cross-sectional view shows a state where the locking pin 13 is inserted into the protruding piece 42.

As shown in FIG. 5, the protruding piece 42 is formed in a thin plate shape and has a degree of flexibility that can be deformed to some extent. As the protruding piece 42 is moved upward, it is gradually separated from the front frame 10 in the width direction d3. That is, the protruding piece 42 gradually extends outward in the width direction d3 as it goes upward.

An insertion hole 43 is provided in a middle portion of the protruding piece 42, and a locking bolt 13 is inserted into the insertion hole 43. As a member constituting the locking bolt 13, the shaft portion 13 a protrudes outward from the front leg frame 10 in the width direction d3, and a head portion 13 b is provided at the front end of the shaft portion 13 a. The outer diameter of the head portion 13b is larger than the outer diameter of the shaft portion 13a and smaller than the outer diameter of the insertion hole 43 of the protruding piece 42.

Next, a seat support 70 that supports the seat 3 will be described with reference to FIG. 6. FIG. 6 is a perspective view showing the seat support 70 in an enlarged manner. As shown in FIG. 6, the seat support 70 is attached to the slider 40. By mounting the seat 3 on the seat support 70 and the handle frame 50, the seat 3 is supported by the frame body 2 in an opened state. In particular, the seat support body 70 shown in FIG. 5 is a seat support frame configured as a frame, and supports the seat 3 from below the seat 3.

The left and right front and rear frame members 71 supported by the left and right sliders 40 are provided as members constituting the seat support frame 70, and the rear connection frame member 72 connects the rear portions 71c of the left and right front and rear frame members 71 to each other. The connection between the left and right front and rear frame members 71 and the rear part 71c by the rear connection frame member 72 helps to reduce the weight of the structure of the seat support frame 70 and enhance the rigidity of the seat support frame 70.

The left and right front and rear frame members 71 face the width direction d3 and are along the front-rear direction d1. On the other hand, the rear connection frame member 72 is curved near its both ends and its middle portion is along the width direction d3. In the example shown in the drawing, a curved rear connecting frame member 72 is bridged between the rear ends of the linear left and right front and rear frame members 71, and the seat support frame 70 is substantially U-shaped. Furthermore, in the example shown in the figure, although the left and right front frame members 71 and the rear connection frame members 72 are integrally formed, they may be configured as separate parts and then connected to each other.

The front portion 71 a of each of the front and rear frame members 71 is formed as a free end. That is, the front portion 71 a of each of the front and rear frame members 71 is not restricted by other parts constituting the frame body 2. In addition, each of the front and rear frame members 71 is an intermediate portion 71 b formed between the front portion 71 a and the rear portion 71 c thereof, and is supported by the slider 40 via the latch 73. That is, the seat support frame 70 is connected to the left and right slide members 40 by only one latch 73 each, and the posture (the facing direction) can be changed slightly.

Next, the seat 3 mounted on the operation support portion 52 of the seat support frame 70 and the handle frame 50 will be described. As shown in FIG. 1, as a member constituting the seat 3, a seat portion 3a is provided, and a backrest portion 3b is erected from the seat portion 3a. The seat portion 3 a mainly supports the buttocks of the infant and child who rides on the stroller 1. On the other hand, the backrest portion 3b is disposed at a position facing the back of the infant and surrounds both sides of the infant.

The seat portion 3 a of the seat 3 is mounted on the seat support frame 70, and the backrest portion 3 b of the seat 3 is an operation portion 52 mounted on the handle frame 50. By setting up the seat 3 in the two areas of the frame body 2 thus separated, it is helpful to keep the seat 3 in an open state.

FIG. 7 shows a state where the seat portion 3 a of the seat 3 passes through the seat support frame 70. As shown in FIG. 7, the seat portion 3 a of the seat 3 is attached to the seat support frame 70 using two left and right side edge portions. In the present embodiment, the seat portion 3a of the seat 3 is provided with two cylindrical portions 3c, and the two cylindrical portions 3c respectively accommodate left and right front and rear frame members 71 and front portions 71a. Each of the cylindrical portions 3c is formed by providing a suture at an edge portion of the cloth material constituting the seat portion 3a, which is folded back, and is opened rearward in the front-rear direction d1.

Returning to FIG. 1, a mounting tool 3d is provided near the upper back portion 3b of the seat 3 near the upper end. By using the mounting tool 3d to wind the upper end of the backrest portion 3b of the seat 3 around the operation portion 52 of the handle frame 50, the backrest portion 3b of the seat 3 can be attached to the handle frame 50.

In addition, a front edge reinforcing band 3e is attached along the front edge portion of the backrest portion 3b of the seat 3. The leading edge reinforcing band 3e is used to reinforce the edge portion in front of the backrest portion 3b. The leading edge reinforcing band 3e shown in FIG. 1 extends from the vicinity of the seat portion 3a to the vicinity of the upper end of the front guide portion 51, and is hooked near the upper end of the front guide portion 51 through a hook portion (not shown).

Further, a back surface reinforcing band 3f extending in the vertical direction d2 is attached to the backrest portion 3b. The back reinforcing belt 3f supports the infant 3 when the infant leans toward the rear. The back reinforcing band 3f shown in FIG. 1 is connected to the operating member 52 of the frame member 72 and the handle frame 50 after being respectively mounted on the seat support frame 70 through the buckle 3g. The state in which the back reinforcing tape 3f is attached to the rear connection frame member 72 is shown in FIG. 8.

As described above, the seat support frame 70 is connected to the left and right sliders 40 by only one bolt 73, and the posture is unstable when the seat 3 is not attached. However, according to this embodiment, since the seat 3 is opened and placed on the seat support frame 70 and the handle frame 50, the seat support frame 70 is restricted to the seat portion 3a of the seat 3, and the seat support frame 70 The posture becomes stable. That is, the seat support frame 70 can be restricted by the seat 3, so that a part dedicated to restrict the seat support frame 70 to the slide member 40 can be omitted. Thereby, the number of parts constituting the stroller 1 can be reduced, and the simplification and weight reduction of the constitution of the stroller 1 can be contributed.

FIG. 8 is a perspective view showing the storage basket 4 from the rear. As shown in FIG. 8, the storage basket 4 is attached to the seat portion 3 a of the seat 3. The storage basket 4 is a place for accommodating articles and improving the convenience of the stroller 1. In addition, in this embodiment, the basket 4 also helps to maintain the shape of the seat 3. The storage basket 4 shown in FIG. 8 is mounted on the front portion of the seat portion 3 a of the seat 3 and is arranged below the seat support frame 70.

The rear part of the basket 4 is supported by a pair of support bands 8 mounted on one of the seat support frames 70. In particular, in the example shown in FIG. 8, a pair of support bands 8 are arranged at a distance from each other in the width direction d3, and the frame members 72 are connected to each other at one end through the buckle 8 a and attached to the seat support frame 70. The other end of each support band 8 is sewn to the rear portion of the basket 4. In this way, the storage basket 4 is supported by the seat support frame 70 through the two support belts 8 that are separated in the width direction d3 and is connected to the frame member 72.

In addition, in the example shown in FIG. 8, a pair of band-shaped pieces 3h are sewn at two places on the back side of the seat portion 3a of the seat 3, and the seat portion 3a of the seat 3 and each of the band-shaped pieces 3h An insertion space 3i is formed therebetween. Furthermore, the left and right support bands 8 are also attached to the rear connection frame member 72 through the corresponding insertion spaces 3i. The left and right support bands 8 are attached to the rear connection frame member 72 through the insertion spaces 3i of the corresponding seats 3, respectively, so that the seat portion 3a of the seat 3 can be pulled closer to the rear connection frame member 72 and held.

From the standpoint of lightness and strength, as one example, the seat support frame 70 may be made of a metal pipe body such as an aluminum alloy. In order to provide infants with a comfortable touch and a comfortable sitting feeling, the seat 3 The seat portion 3a, the backrest portion 3b, and the storage basket 4 may be made of a cloth-like material. From the viewpoint of lightness and strength, as one example, the front edge reinforcing belt 3e, the back reinforcing belt 3f, and the support belt 8 of the seat 3 may be made of woven fabric.

Next, the folding operation of the stroller 1 configured as described above will be described with reference to FIGS. 9 and 10. FIG. 9 is a side view showing a process in which the frame body 2 in the use state C1 shown in FIG. 3 is deformed to a folded state, and FIG. 10 is a perspective view showing the frame body 2 in the folded state C2.

First, the protruding piece 42 is deformed in the state shown in FIG. 5, and the locking bolt 13 is pulled out from the insertion hole 43 of the protruding piece 42. Thereby, the locking of the sliding member 40 by the front leg 10 is released. Next, as shown in FIG. 9, the handle frame 50 is slid on the front leg frame 10 and gradually pressed downward. As the handle frame 50 slides, the slide member 40 fixed to the handle frame 50 and the seat support frame 70 installed on the slide member 40 will gradually descend downward. In addition, the seat 3 mounted on the seat support frame 70 and the handle frame 50 will gradually slide in conjunction with the handle frame 50.

On the other hand, since the upper sliding member 30 is fixed to the front leg frame 10, the interval between the upper sliding member 30 and the sliding member 40 becomes larger as the handle frame 50 slides. As the interval between the two sliders 30 and 40 increases, the link bracket 60 mounted between the upper slider 30 and the rear footrest 20 functions as a link, and the rear footrest 20 rotates the slider 40 . With this turning operation, the rear footrest 20 causes the rear wheel 6 to gradually approach the handlebar 50. In addition, the rear footrest 20 gradually moves the rear wheel 6 away from the front wheel 5 by the turning operation. In the example shown in FIG. 9, the rear footrest 20 rotates the rear wheel 6 counterclockwise, and the relative rotation center RC1 of the rear footrest 20 and the slider 40 is used as a reference, so that the rear wheel 6 is positioned on the opposite side of the front wheel 5 Way while acting.

As shown in FIG. 10, when the folded state C2 is reached, the handle frame 50 and the front leg frame 10 overlap in a wide range, and the size of the vertical direction d2 becomes small. In addition, the rear tripod 20 will be parallel to the front tripod 10, and the rear wheel 6 supported by the rear tripod 20 will move to the opposite side of the front wheel 5 based on the aforementioned relative rotation center RC1, and the size of the front-back direction d1 will become smaller. .

Furthermore, to unfold the frame body 2 from the folded state C2 to the use state C1, it is only necessary to take the reverse order of the folding operation described above. That is, first, the handle frame 50 is slid on the front frame 10 and is gradually raised upward. As the handlebar 50 is lifted up, the link bracket 60 mounted on the middle part of the upper slide 30 and the rear foot frame 20 will rotate the rear foot frame 20 to the sliding member 40, and the rear wheel 6 will move from the handle frame 50. Gradually away.

If the handle frame 50 is further lifted up gradually, the protruding piece 42 of the sliding member 40 will abut against the locking bolt 13 fixed to the front frame 10. FIG. 11 shows a state where the protruding piece 42 of the slider 40 abuts against the locking bolt 13. As shown in FIG. 11, the protruding piece 42 gradually expands outward in the width direction d3 as it goes upward. Therefore, when the upper end of the protruding piece 42 abuts against the locking bolt 13, the protruding piece 42 will deform and move more toward the width direction d3. Push away from the outside. After that, if the handle holder 50 is further raised, the head portion 13b of the locking bolt 13 will enter the insertion hole 43 of the protruding piece 42 and become the state shown in FIG. 5. In the state shown in FIG. 5, the protruding piece 42 is engaged with the locking bolt 13, and the front stand 10 is restricted by the sliding member 40.

As described above, according to this embodiment, it is a foldable stroller 1 that can be deformed between the use state C1 and the folded state C2, including the frame body 2 supporting the front wheels 5 and the rear wheels 6, and the seat supported by the frame body 2. The chair 3 and the frame body 2 have: a front foot frame 10 supporting the front wheel 5; a handle frame 50 which can be slidably moved to the front foot frame 10 through the upper slide member 30 and the slide member 40; the rear foot frame 20 supports The rear wheel 6 is relatively rotatably connected to the sliding member 40; and the link bracket 60 is connected to the upper slide 30 relatively rotatably on one side thereof, and is connected to the rear foot relatively rotatably on the other side The portion of the frame 20 closer to the rear wheel 6 than the portion to which the slider 40 is connected. According to such a configuration, the number of parts constituting the stroller 1 can be reduced, and the structure of the stroller 1 can be simplified and lightened.

In addition, according to this embodiment, the frame body 2 further includes a seat support frame 70 supported by the slider 40, and the seat 3 is bridged between the seat support frame 70 and the handle frame 50. In this case, if the slider 40 is fixed to the handle frame 50 and the handle frame 50 is slid to the front leg frame 10, the seat support frame 70 will move in conjunction with the handle frame 50. As a result, the stroller 1 can be folded without folding the seat 3 excessively, which is advantageous in that the seat 3 is not damaged.

Furthermore, according to this embodiment, the seat support frame 70 includes left and right front and rear frame members 71 supported by the left and right sliding members 40 and rear connecting frame members 72 connecting between the left and right front and rear frame members 71 and rear portions 71c, and The seat 3 is erected on each of the left and right front and rear frame members 71 and the rear connection frame members 72. The rear connecting frame member 72 connects the left and right front and rear frame members 71 between the rear portions 71c, which contributes to lightweight construction of the seat support frame 70 and enhances the rigidity of the seat support frame 70.

Furthermore, according to this embodiment, the front portion 71 a of each of the front and rear frame members 71 is formed as a free end, and each of the front and rear frame members 71 is an intermediate portion 71 b between the front portion 71 a and the rear portion 71 c. Piece 40 is supported. When the seat support 70 is connected to the left and right sliders 40 via the latch 73, the posture is unstable when the seat 3 is not attached. However, according to this embodiment, the seat 3 is opened between the seat support frame 70 and the handle frame 50. Therefore, the seat support frame 70 is limited to the seat 3, and the posture of the seat support frame 70 becomes stable. That is, since the seat support frame 70 can be restricted by the seat 3, a part dedicated to restrict the seat support frame 70 to the slider 40 can be omitted. Thereby, the number of parts constituting the stroller 1 can be reduced, and the simplification and weight reduction of the constitution of the stroller 1 can be contributed.

Furthermore, according to this embodiment, the upper slider 30 is fixed to the front leg frame 10, and the lower slider 40 is fixed to the handle frame 50. In this case, the upper slider 30 can be moved integrally with the front frame 10, and the slider 40 can be moved integrally with the handle frame 50. Furthermore, a guide hole 31 is provided in the upper slider 30 to allow the handle frame 50 to be inserted with a gap. By inserting the handle frame 50 into the guide hole 31 of the upper slider 30 with a gap, the handle frame 50 can be smoothly moved along the front foot frame 10. Furthermore, a guide hole 41 is also provided in the slider 40 to allow the front leg 10 to be inserted with a gap. By inserting the front leg frame 10 into the guide hole 41 of the slider 40 with a gap, the handle frame 50 can be smoothly moved along the front leg frame 10.

In addition, according to this embodiment, when the use state C1 is deformed to the folded state C2, the handle frame 50 slides on the front foot frame 10 so as to increase the range of overlapping with the front foot frame 10, and the rear foot frame 20 causes the rear wheel 6 The slider 40 is relatively rotated while approaching the handle frame 50. According to such a configuration, in the folded state C2, the dimensions of the stroller 1 in both the front-rear direction d1 and the vertical direction d2 can be reduced in size.

In addition, according to this embodiment, the locking bolt 13 functions as an engaging portion provided on the front leg 10, and the protruding piece 42 is provided on the slider 40 and is engaged with the engaging portion 13 The function of the part is set by the locking part 9 composed of the locking bolt and the engaged part 42 composed of the protruding piece, and the locking mechanism 9 of the front foot 10 is restricted by the slide 40 in the use state C1. . According to such a configuration, the front stand 10 can be prevented from sliding to the sliding member 40 in the use state C1, and the use state C1 can be stably maintained.

Moreover, according to this embodiment, the support band 8 connects the frame member 72 after being stretched between the seat portion 3a of the seat 3 and the seat support frame 70, and connects the frame member 72 by pulling the seat portion 3a closer. By connecting the frame member 72 with the seat portion 3a of the seat 3 pulled closer, it is helpful to support the seat portion 3a of the seat 3 at an appropriate angle with a good riding feeling.

In addition, various changes can be added to the above-mentioned embodiment. An example of the deformation will be described below with reference to the drawings. In the following description and the drawings used in the following description, regarding the parts that can be configured in the same manner as the above-mentioned embodiment, the same numbers as those used in the corresponding parts in the above-mentioned embodiment are used, and repeated descriptions are omitted.

In the above embodiment, as shown in FIG. 6, an example is shown in which the seat support body 70 is mounted on the seat support frame of the slider 40 through the latch 73, but the form of the seat support body 70 is not limited to this example. 11 and 12 show other forms of the seat support body 70.

However, in the example shown in FIG. 12, the seat support 70 is configured integrally with the handle frame 50. Specifically, each of the front guide portions 51 of the handle frame 50 protrudes forward from a position fixed to the corresponding slide member 40, and the protruded portions individually constitute a seat support body 70. A seat portion 3 a of the seat 3 is attached to the seat support 70.

In the example shown in FIG. 13, the seat support 70 is configured integrally with the slider 40. Specifically, each slider 40 further protrudes forward from a place fixed to the corresponding handle frame 50, and the protruding portion constitutes a seat support 70. A seat portion 3 a of the seat 3 is attached to the seat support 70.

In the above embodiment, as shown in FIG. 5, the example in which the locking mechanism 9 is formed by the locking pin 13 fixed to the front leg 10 and the protruding piece 42 into which the locking pin 13 is inserted has been shown, but it is not shown. It is limited to such an example. 14 to 20, another configuration example of the locking mechanism 9 will be described in order.

Among them, in the examples shown in FIG. 14 and FIG. 15, the ejector pin unit 14 is mounted on the front leg 10, and the ejector pin unit 14 is inserted into the insertion hole 44 provided in the slider 40. As a component constituting the ejection pin unit 14, a pair of rocking plates 14 a connected at one end to each other is disposed in the front foot frame 10, and the joint of the pair of rocking plates 14 a is fixed to the front foot frame 10. The ejection pins 14b protrude from the other end of each of the rocking plates 14a, and can enter and exit from the exposure holes 15 provided in the front leg frame 10.

Then, in order to deform the stroller 1 from the use state C1 to the folded state C2, after pushing the ejection pin 14b into the front leg frame 10, the handle frame 50 and the sliding member 40 may be pressed against the front leg frame 10. On the other hand, in order to deform the stroller 1 from the folded state C2 to the use state C1, it is only necessary to lift the handle frame 50 and the slider 40 to the front foot frame 10, and the ejection pin 14b will abut the slider 40 It is pushed into the front leg 10 by the sliding member 40. Thereafter, if the handle frame 50 is further raised, the ejection pin 14 b and the insertion hole 44 of the slider 40 face each other, and the ejection pin 14 b is received in the insertion hole 44 of the slider 40. Thereby, the front stand 10 locks the sliding member 40.

Next, in the examples shown in Figs. 16 and 17, a safety plate 91 is provided that pushes in and out pins 14b. The safety plate 91 shown in FIG. 16 and FIG. 17 is a plate-like piece which faces the outer side in the width direction d3 of the slider 40. The safety plate 91 is pivotally connected to the handle frame 50 and can be rotated between a protection position shown in FIG. 17 and a release position shown in FIG. 16.

In particular, the safety plate 91 is provided with an exposure hole 91a for exposing the ejector pin 14b in the locked state. Furthermore, as shown in FIG. 17, when the safety plate 91 is located at the protection position, the safety plate 91 covers the ejection pin 14 b and the insertion hole 44 of the slider 40 without exposing them. Therefore, in the state shown in FIG. 17, the ejection pin 14 b cannot be operated, and the locked state of the front leg 10 and the slider 40 can be reliably maintained.

On the other hand, as shown in FIG. 16, when the safety plate 91 is in the release position, the exposed hole 91 a of the safety plate 91 and the ejection pin 14 b and the insertion hole 44 of the slider 40 face each other to expose the ejection pin 14 b. Therefore, in the state shown in FIG. 16, the ejection pin 14 b can be operated, and the locking of the front foot frame 10 and the slider 40 can be released.

Next, in the example shown in FIG. 18, as a component constituting the locking mechanism 9, the locking pin 16 is fixed to the front leg 10, and the hook member 46 hooked on the locking pin 16 is rotatably mounted on Slider 40. By hooking the hook component 46 to the locking bolt 16, the front foot frame 10 can lock the sliding member 40.

Next, in the examples shown in FIG. 19 and FIG. 20, as a component constituting the locking mechanism 9, the ejection pin unit 47 is installed on the sliding member 40, and the front leg 10 is provided with an insertion hole for receiving the ejection pin unit 47 17. As shown in FIG. 20, as a member constituting the ejection pin unit 47, an ejection pin 47 a accommodated in the insertion hole 17 is provided, and the ejection pin 47 a is housed in the slider 40. In the slider 40, a hole 48 is provided at a position facing the ejection pin 47a, and a handle 47b mounted on the ejection pin 47a is exposed from the hole 48. Further, a spring 47c is accommodated in the slider 40, and the spring 47c surrounds the ejection pin 47a and imparts a potential energy to the ejection pin 47a toward the insertion hole 17.

Moreover, in order to deform the stroller 1 from the use state C1 to the folded state C2, after pulling the handle 47b to pull out the ejection pin 47a from the insertion hole 17 of the front frame 10, it is only necessary to align the handle frame 50 and the slider 40. The front stand 10 can be gradually pressed down. On the other hand, in order to deform the stroller 1 from the folded state C2 to the use state C1, it is only necessary to lift the handle frame 50 and the sliding member 40 to the front foot frame 10, and the ejection pin 47a will abut the front foot frame 10 It is pushed into the slider 40 by being pushed by the front stand 10. Thereafter, when the handle frame 50 is further raised, the ejection pin 47a and the insertion hole 17 of the front leg frame 10 face each other, and the ejection pin 47a is pushed into the insertion hole 17 of the front leg frame 10 by the action of the spring 47c. Thereby, the front stand 10 locks the sliding member 40.

Furthermore, in the above description, an example has been shown in which the lock is released by the operator directly operating the lock mechanism 9, but it is not limited to this example. For example, the locking mechanism 9 may be connected to a remote control mechanism provided on the operation portion 52 of the handle frame 50, and the locking of the locking mechanism 9 may be released by operating the remote control mechanism. According to such a configuration, even when the operator is in the state of holding the operation portion 52 of the handle frame 50, the lock of the lock mechanism 9 can be released by operating the remote control mechanism, so the operability of the baby carriage 1 is improved. As an example of the remote control mechanism, a crossbar or a push-button switch connected to the locking mechanism 9 through an electric wire, a drawbar, or a wire may be mentioned. In addition, the remote control mechanism can be either a one-handed type or a two-handed type.

In addition, the above-mentioned locking mechanism 9 is shown in FIG. 5 and FIGS. 14 to 20. An example has been shown in which the locking mechanism 9 limits the front stand 10 to the sliding member 40 in the use state C1, but is not limited to this. Example. The locking mechanism 9 can also limit the handle frame 50 to the upper slide 30 in the use state C1. In addition, both a locking mechanism for restricting the front stand 10 to the slider 40 and a locking mechanism for restricting the handle frame 50 to the upper slider 30 may be provided.

1‧‧‧ stroller (foldable stroller)

2‧‧‧Frame Ontology

3‧‧‧ seat

3a‧‧‧Seat

3b‧‧‧back

3c‧‧‧ cylindrical part

3d‧‧‧Mounting Tools

3e‧‧‧ leading edge reinforcement

3f‧‧‧Back reinforcement tape

3g‧‧‧ Buckle

3h‧‧‧ Strip

3i‧‧‧Insert space

4‧‧‧ storage basket

5‧‧‧ front wheel

6‧‧‧ rear wheel

7a‧‧‧caster

7b‧‧‧ Wheel cage

8‧‧‧ support belt

8a‧‧‧ Buckle

9‧‧‧Locking mechanism

10‧‧‧ Front Tripod

13‧‧‧Locking bolt (engagement part)

13a‧‧‧Shaft

13b‧‧‧Head

14‧‧‧ ejector unit

14a‧‧‧Shake plate

14b‧‧‧ Top Out

15‧‧‧ exposed hole

16‧‧‧Locking bolt

17‧‧‧ insertion hole

20‧‧‧ rear tripod

30‧‧‧Up Slide

31‧‧‧ guide hole

40‧‧‧ Slider

41‧‧‧ guide hole

42‧‧‧ protruding piece (be engaged part)

43‧‧‧ insertion hole

44‧‧‧ insertion hole

46‧‧‧ Hook Parts

47‧‧‧ ejector unit

47a‧‧‧ Top Out

47b‧‧‧handle

47c‧‧‧Spring

48‧‧‧hole

50‧‧‧Handlebar

51‧‧‧leading

52‧‧‧Operation Department

60‧‧‧Link bracket

70‧‧‧seat support body (seat support frame)

71‧‧‧Front and rear frame members

71a‧‧‧Front section

71b‧‧‧ middle section

71c‧‧‧Rear part

72‧‧‧ post link frame members

73‧‧‧ Bolt

91‧‧‧ safety plate

91a‧‧‧ exposed hole

C1‧‧‧Use status

C2‧‧‧ folded state

d1‧‧‧ forward and backward

d2‧‧‧ up and down

d3‧‧‧width direction

RC1 ~ RC3‧‧‧ Relative rotation center

FIG. 1 is a perspective view showing a baby carriage in an embodiment in use. FIG. 2 is a side view of the stroller shown in FIG. 1. FIG. FIG. 3 is a perspective view showing a frame body of the stroller shown in FIG. 1. FIG. FIG. 4 is a side view of the frame body shown in FIG. 3. FIG. 5 is a cross-sectional view of the frame body along a line VG shown in FIG. 4. FIG. 6 is an enlarged perspective view showing a seat support frame constituting the frame body shown in FIG. 3. FIG. 7 is a perspective view showing a state where the seat shown in FIG. 6 passes through a seat support frame. FIG. FIG. 8 is a perspective view showing the storage basket shown in FIG. 3 from the rear. FIG. 9 is a perspective view showing a process in which the frame body of the stroller in the use state shown in FIG. 4 is deformed to a folded state. FIG. 10 is a perspective view showing the frame body in a folded state. FIG. 11 is a cross-sectional view showing a state in which the stroller is deformed from the folded state to one of the use states in the cross-section shown in FIG. 5. FIG. 12 is a schematic view showing a modified example of the seat support of the stroller shown in FIG. 1. FIG. 13 is a schematic view showing another modified example of the seat support of the stroller shown in FIG. 1. FIG. 14 is a perspective view showing a modification of the locking mechanism of the stroller shown in FIG. 1. 15 is a cross-sectional view of the frame body along a line XV-XV shown in FIG. 14. 16 is a perspective view showing an example in which a safety plate is further provided in the stroller shown in FIG. 14. FIG. 17 is a perspective view showing a state in which the safety plate is rotated to a position covering the ejection pin in the stroller shown in FIG. 16. FIG. 18 is a perspective view showing another modified example of the locking mechanism of the stroller shown in FIG. 1. FIG. FIG. 19 is a perspective view showing still another modified example of the locking mechanism of the stroller shown in FIG. 1. FIG. FIG. 20 is a cross-sectional view of the frame body along the line XX-XX shown in FIG. 19.

Claims (7)

A stroller is a foldable stroller that can be deformed between a use state and a folded state, and includes a frame body supporting front wheels and rear wheels, and a seat supported by the frame body. The frame body has: a front leg frame To support the front wheel; a handle frame that can be slidably moved to the front foot frame through an upper sliding member and a sliding member installed on the front foot frame; a rear foot frame that supports the rear wheel and can be relatively rotationally connected to the sliding member; The bracket is relatively rotationally connected to the upper sliding member on one side, and is relatively rotationally connected to the rear foot portion of the rear footrest which is closer to the rear wheel than the portion connecting the sliding member; and The seat support is supported by the sliding members, and the seat is erected between the seat supporting body and the handle frame; the seat supporting body is a seat supporting frame including the left and right sliding members. The left and right front and rear frame members, and the rear connecting frame member that connects the rear part of the left and right front and rear frame members; the handle frame includes: a pair of front guides Are arranged on the left and right sides; and an operation portion is connected between the upper ends of the pair of front guide portions, the seat has: a seat portion, which is installed on the left and right front and rear frame members; a back portion, which is connected to the seat portion and is installed on the handle And a back reinforcing belt installed on the backrest portion, the back reinforcing belt being mounted on the rear connecting frame member of the seat support and the operation portion of the handle frame. For example, the baby carriage according to item 1, wherein the seat support frame is supported on the sliding member in a manner capable of changing a facing direction. According to the baby carriage of item 2, the seat is each of the front and rear frame members and the rear connection frame member that are erected on the left and right sides. For example, the baby carriage of item 3, wherein the front part of each front and rear frame member is formed as a free end, and each front and rear frame member is an intermediate part between the front part and the rear part, and is replaced by a corresponding sliding member through a latch. support. For example, the baby carriage according to item 1, wherein the upper slide member is fixed to the front foot frame, and a guide hole for inserting the handle frame with a gap is provided, and the slide member is fixed to the handle frame, and is provided with The aforementioned front leg has a guide hole inserted with a gap. For example, the baby carriage of item 5 may further include a locking mechanism for restricting the sliding part by the front leg in the aforementioned use state. The locking mechanism is provided with an engaging portion provided on the front leg, and The sliding part is engaged with the engaged part. If the baby carriage of any one of the items 1 to 6 is deformed from the aforementioned use state to the aforementioned folded state, the handlebar slides on the front footrest in such a manner as to increase the range of overlap with the front footrest, In addition, the rear leg is relatively rotated on the sliding member so that the rear wheel approaches the handlebar.