baby carriage

Abstract

To provide a stroller that can improve user experience. [Solution] In one embodiment, the stroller 1 has an operating mechanism 3 located in the center of the handle portion 23, and a first locking mechanism and a second locking mechanism located on the frame 2. The operating mechanism 3 has a first wire 31 connected to the first locking mechanism, a first displacement member 32 that moves the first wire 31, a second wire 33 connected to the second locking mechanism, a second displacement member 34 that moves the second wire 33, a connecting portion 351 connected to the first displacement member 32 or the second displacement member 34 in conjunction with it, a switching portion 36 that selectively switches between a first state in which the connecting portion 351 is linked with the first displacement member 32 and a second state in which the connecting portion 351 is linked with the second displacement member 34, and an operating portion 352 that moves the connecting portion 351. The first displacement member 32 and the second displacement member 34 are arranged in an arrangement direction that intersects the left-right direction.

Description

Technical Field

[0001] One aspect of the present disclosure relates to a baby stroller.

Background Art

[0002] Conventionally, a lock release device is known that includes an operation member, a selection member, a first lock mechanism, and a second lock mechanism disposed on the frame of a baby stroller body, a first lock release module connected to the first lock mechanism, and a second lock release module connected to the second lock mechanism (for example, Patent Document 1). The first lock release module and the second lock release module are provided on the handle portion of the frame and are arranged in the direction in which the handle portion extends. The selection member can slide the first lock release module and the second lock release module so that one of the first lock release module and the second lock release module moves to a position corresponding to the operation member. Thus, by sliding the selection member, one of the first lock release module and the second lock release module can be selected.

[0003] The first lock release module includes a first rotating member and a first sliding member, and the second lock release module includes a second rotating member and a second sliding member. When the selection member is slid to select the first lock release module, when the operation member slides and presses the first sliding member, the first rotating member connected to the first sliding member rotates, and the wire of the first lock mechanism connected to the first rotating member is pulled. Thereby, the first lock mechanism is released. Conversely, when the selection member is slid to select the second lock release module, when the operation member slides and presses the second sliding member, the second rotating member connected to the second sliding member rotates, and the wire of the second lock mechanism connected to the second rotating member is pulled. Thereby, the second lock mechanism is released.

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-27994 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] According to the mechanism described in Patent Document 1, two types of operations can be performed by operating a lever (selection member) provided on the handle. However, since the first and second unlocking modules are arranged in the direction in which the handle extends (width direction), the width dimension of the unlocking device may increase. As a result, the space (length in the width direction) for the user's grip on both outer sides of the unlocking device in the width direction may decrease, potentially impairing user operability.

[0006] One aspect of this disclosure is to provide a stroller that can improve user operability. [Means for solving the problem]

[0007] This disclosure includes the strollers [1] to [7].

[0008] [1] The stroller body has a hollow frame including a handle section that extends in the left-right direction, The aforementioned stroller body is, The operating mechanism is located in the center of the handle portion, A first locking mechanism is arranged in the frame, A second locking mechanism is arranged in the frame, It has, The aforementioned operating mechanism is Inside the frame, a first wire connected to the first locking mechanism, A first displacement member having a first connecting portion connected to the first wire, which moves the first wire by the displacement of the first connecting portion, Inside the frame, a second wire connected to the second locking mechanism, A second displacement member having a second connecting portion connected to the second wire, which moves the second wire by the displacement of the second connecting portion, A connecting portion connected to the first displacement member or the second displacement member in conjunction with it, A switching unit that selectively switches between a first state in which the connecting portion is linked with the first displacement member and a second state in which the connecting portion is linked with the second displacement member, An operating unit for moving the aforementioned connecting part, It has, If the connecting portion moves in the first state, the first connecting portion will be displaced while the second connecting portion will not be displaced, thereby releasing the lock on the first locking mechanism while keeping the lock on the second locking mechanism unlocked. If the connecting portion moves in the second state, the second connecting portion will be displaced while the first connecting portion will not be displaced, thereby releasing the lock on the second locking mechanism while keeping the lock on the first locking mechanism. A stroller in which the first displacement member and the second displacement member are arranged in an arrangement direction that intersects the left-right direction.

[0009] In the configuration described in [1] above, the user can switch between a first state and a second state by operating the switching unit, thereby switching between a state in which the first lock mechanism can be released by operating the operating unit and a state in which the second lock mechanism can be released by operating the operating unit. This makes it possible to perform two different operations with the same lever operation. Furthermore, in the above configuration, the first displacement member and the second displacement member are arranged in an arrangement direction that intersects with the left-right direction, thereby suppressing an increase in the width dimension of the operating mechanism in the left-right direction. This makes it possible to appropriately secure space for the user's grip on the handle (the part in the width direction that is wider than the part in which the first displacement member and the second displacement member are housed). Therefore, the above configuration improves user operability.

[0010] [2] The connecting portion is located between the first displacement member and the second displacement member, The aforementioned switching unit is A rod-shaped member extending in the aforementioned arrangement direction, A pressing member is provided, which is exposed to the outside of the frame from the handle portion and is configured to change the position of the rod-shaped member in the arrangement direction when pressed, It has, The operating unit is configured to allow the connecting unit to rotate around an axis along the arrangement direction. In the first state, when the pressing member is not pressed in, the first displacement member rotates via the rod-shaped member in conjunction with the rotational movement of the connecting portion, causing the first connecting portion to be displaced. In the second state in which the pressing member is pressed in, the second displacement member rotates via the rod-shaped member in conjunction with the rotational movement of the connecting portion, thereby displacing the second connecting portion, as described in [1].

[0011] According to the configuration described in [2] above, the first state and the second state can be easily switched by whether or not the pressing member exposed from the handle is pressed in, thereby further improving user operability.

[0012] [3] The stroller according to [2], wherein the switching section further comprises an elastic member that biases the rod-shaped member toward the pressing member.

[0013] According to the configuration described in [3] above, the elastic member biases the rod-shaped member toward the pressing member. Therefore, in a natural state where no external force is applied to the pressing member, the elastic member biases the rod-shaped member toward the pressing member (i.e., the pressing member is not pushed in the direction of alignment). As a result, when no external force is applied to the pressing member, the system can always be in a first state where the lock of the first lock mechanism can be released by operating the operating part. This prevents the user from mistakenly selecting the unlock operation of the first lock mechanism instead of the unlock operation of the second lock mechanism.

[0014] [4] The operating section is located on the lower surface of the handle section, The switching unit is disposed so as to be exposed from the rear surface of the handle unit. The baby stroller according to any one of [1] to [3].

[0015] According to the configuration of [4] above, since the switching unit is disposed so as to be exposed from the rear surface of the handle unit and the operation unit is disposed on the lower surface of the handle unit, for example, while operating the switching unit with the thumb of one hand, the operation unit can be operated with the remaining fingers of the one hand. That is, the operation of the switching unit and the operation of the operation unit can be performed with one hand. Thereby, the operability of the user is further improved.

[0016] [5] The operation unit and the connecting unit are integrally formed. The baby stroller according to any one of [1] to [4].

[0017] According to the configuration of [5] above, since there is no need to separately prepare and assemble the operation unit and the connecting unit as separate members, the number of parts can be reduced and the assembly man-hours can be reduced.

[0018] [6] The operation unit and the connecting unit are formed separately from each other. The baby stroller according to any one of [1] to [4].

[0019] According to the configuration of [6] above, since the operation unit and the connecting unit are separated, when one of these parts is damaged, only the one part needs to be replaced. Therefore, compared with the case where the operation unit and the connecting unit are integrally configured, the cost of parts replacement can be reduced.

[0020] [7] The first displacement member has a first moving member that is movable in a first direction intersecting the left-right direction and the arrangement direction. The first connection portion of the first displacement member is supported by the first moving member so as to be movable in the left-right direction in accordance with the movement of the first moving member in the first direction. The second displacement member has a second moving member that is movable in the first direction. The second connection portion of the second displacement member is supported by the second moving member so as to be movable in the left-right direction in accordance with the movement of the second moving member in the first direction. In the first state, when the connecting portion is moved by the operating portion, the first moving member moves in the first direction. In the second state, the stroller according to [1], wherein when the connecting portion is moved by the operating portion, the second moving member moves in the first direction.

[0021] According to the configuration described in [7] above, in the first displacement member, a configuration for pulling the first wire can be easily realized by converting the displacement of the first moving member in a first direction (a direction intersecting the left-right direction and the arrangement direction) into the left-right displacement of the first connection part. Similarly, in the second displacement member, a configuration for pulling the second wire can be easily realized by converting the displacement of the second moving member in a first direction into the left-right displacement of the second connection part. Therefore, according to the above configuration, by employing a mechanism that converts the linear movement of each moving member (first moving member, second moving member) into the linear movement of each wire (first wire, second wire), the operating mechanism can be constructed with a relatively simple mechanism. [Effects of the Invention]

[0022] According to one aspect of this disclosure, it is possible to provide a stroller that can improve user operability. [Brief explanation of the drawing]

[0023] [Figure 1] Figure 1 is a perspective view of a stroller according to one embodiment. [Figure 2] Figure 2(a) is a side view showing the stroller in its unfolded state, and Figure 2(b) is a side view showing the stroller in its folded state. [Figure 3] Figure 3 shows the part of the stroller body including the handle. [Figure 4]Figure 4(a) is a perspective view showing the handle side cover. Figure 4(b) is an exploded perspective view showing the movable member, locking member, spring, and frame side cover. [Figure 5] Figure 5(a) is a cross-sectional view along the VV line in Figure 3 with the first locking mechanism locked. Figure 5(b) is a cross-sectional view along the VV line in Figure 3 with the first locking mechanism unlocked. [Figure 6] Figure 6 is a diagram illustrating the operation of the folding lock mechanism. [Figure 7] Figure 7 is an exploded perspective view showing the operating mechanism. [Figure 8] Figure 8 is a cross-sectional view along line VIII-VIII in Figure 3, in the first state where the rod-shaped member is not pushed in. [Figure 9] Figure 9 is a cross-sectional view along line VIII-VIII in Figure 3 in the second state where the rod-shaped member is pressed in. [Figure 10] Figure 10 is a diagram illustrating the operation of the operating mechanism. [Figure 11] Figure 11 is a partially enlarged view showing the operating mechanism related to the first modified example. [Figure 12] Figure 12 is an exploded perspective view showing the operating mechanism related to the first modified example. [Figure 13] Figure 13 is a diagram illustrating the operation of the operating mechanism according to the first modified example. [Figure 14] Figures 14(a) and 14(b) are schematic diagrams illustrating the operating mechanism of the second modified example. [Modes for carrying out the invention]

[0024] Hereinafter, one embodiment of the present disclosure will be described in detail with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0025] The stroller 1 according to this embodiment will be described with reference to Figures 1 and 2. The stroller 1 is configured to be foldable. That is, the stroller 1 is configured to be switchable between the unfolded state shown in Figures 1 and 2(a) and the folded state shown in Figure 2(b). The unfolded state is the state in which the stroller body 10 is unfolded so that an infant can be placed in the stroller 1. The folded state is the state in which the stroller body 10 is folded so that the stroller 1 can be stored compactly.

[0026] In this specification, the terms “front,” “rear,” “left,” “right,” “up,” “down,” “front-rear direction,” “left-right direction,” and “up-down direction” with respect to the stroller 1 mean, unless otherwise specified, “front,” “rear,” “left,” “right,” “up,” “down,” “front-rear direction,” “left-right direction,” and “up-down direction” with respect to an infant or toddler riding in the stroller 1 in its unfolded state. When the contact surface of the stroller 1 is a horizontal plane, the “front-rear direction” is the direction of movement of the stroller 1 parallel to the contact surface. The “up-down direction” is the direction perpendicular to both the front-rear direction and the contact surface. The “left-right direction” is the direction perpendicular to both the front-rear direction and the up-down direction.

[0027] In Figures 1 and 2, the "front-back direction" is represented as the X-axis direction, the "left-right direction" as the Y-axis direction, and the "up-down direction" as the Z-axis direction. The negative direction of the X-axis direction corresponds to "front," and the positive direction of the X-axis direction corresponds to "back." Similarly, the positive direction of the Y-axis direction corresponds to "right," and the negative direction of the Y-axis direction corresponds to "left." Furthermore, the positive direction of the Z-axis direction corresponds to "up," and the negative direction of the Z-axis direction corresponds to "down." In the "left-right direction," the side approaching the infant in stroller 1 (the center of stroller 1 in the left-right direction) is called the inside, and the side moving away from the infant is called the outside.

[0028] As shown in Figure 1, the stroller 1 comprises a stroller body 10 and a seat 11 attached to the stroller body 10. The stroller body 10 has a frame 2. The frame 2 has a main frame 21, a connecting frame 22 connected to the main frame 21, a handle portion 23 connected to the connecting frame, and a seat support portion 24. Figures 1 and 2(a) both show the stroller 1 in its unfolded state. Figure 1 shows the seat 11 attached to the stroller body 10, while Figures 2(a) and 2(b) show the seat 11 removed from the stroller body 10.

[0029] The main frame 21 includes a pair of front legs 211, a pair of rear legs 212, a pair of armrests 213, and a pivot bracket 214. The upper end of each front leg 211 is rotatably connected to the front end of the armrest 213 located on the side corresponding to each front leg 211 (left or right). Similarly, the upper end of each rear leg 212 is rotatably connected to the front end of the armrest 213 located on the side corresponding to each rear leg 212 (left or right). The rear end of each armrest 213 is connected to the middle portion of the rear leg 212 located on the side corresponding to each armrest 213 (left or right) via the pivot bracket 214 and a link member 51 described later.

[0030] As shown in Figure 3, the connecting frame 22 and the handle portion 23 are pivotably connected to the main frame 21 configured as described above. The handle portion 23 has a gripping portion 23a extending in the left-right direction and connecting portions 23b extending downward from both ends of the gripping portion 23a, and the handle portion 23 is formed in a U shape. The connecting portions 23b are aligned with the connecting frame 22 in the direction in which the connecting frame 22 extends. The connecting frame 22 and the handle portion 23 are formed in a hollow shape, and wires (first wire 31, second wire 33, etc.) described later are arranged inside them.

[0031] In the rear-pushing state shown in Figures 1 and 2(a) (i.e., the operator (guardian) grips the handle portion 23 from the rear side of the infant riding in the stroller 1 and steers the stroller 1), the connecting frames 22 located on both sides of the seat 11 in the left-right direction are connected to the link members 51 on each side (left or right) in such a way that they remain parallel to the link members 51. The connecting frames 22 may also be configured to swing counterclockwise relative to the main frame 21 in Figure 2(a) so that the grip portion 23a of the handle portion 23 moves forward of the infant riding in the stroller 1. In this case, the operator can grip the handle portion 23 from the front leg 211 side facing the infant and steer the stroller. That is, it becomes possible to move the stroller 1 so that the rear leg 212 side of the stroller 1 is forward in the direction of travel. In this face-pushing state, the connecting frames 22 are not parallel to the link members 51.

[0032] As shown in Figures 1 and 2(a), the seat support section 24 supports the seat 11 in a reclinable manner. The seat support section 24 includes a seat support frame 24a, a back support frame 24b, a base seat (not shown), an upper frame 24c, and a connecting frame 24d. The seat support frame 24a is a frame member located below the buttocks of an infant riding in the stroller 1. The back support frame 24b is pivotably connected to the seat support frame 24a and is located behind the back of an infant riding in the stroller 1. For example, each of the seat support frame 24a and the back support frame 24b may be made of a metal pipe having an overall U-shape.

[0033] The base sheet, not shown, is a fabric member stretched over the seat support frame 24a and the back support frame 24b. The base sheet has a seat support portion that supports the seat portion 11a of the seat 11 and a back support portion that supports the back portion 11b of the seat 11. The upper frame 24c is a U-shaped frame member positioned above the back support frame 24b and positioned approximately parallel to the back support frame 24b. The connecting frame 24e is a frame member that connects the back support frame 24b and the upper frame 24c.

[0034] The stroller body 10 includes an operating mechanism 3 (see Figure 7), a pair of left and right handle locking mechanisms 4 (first locking mechanism), and a pair of left and right folding locking mechanisms 5 (second locking mechanism).

[0035] The steering lock mechanism 4 will be described with reference to Figures 3 to 5. Below, one of the pair of steering lock mechanisms 4 will be described, but the other steering lock mechanism 4 has a similar configuration. The steering lock mechanism 4 is located on the frame 2 and connects the steering wheel portion 23 to the connecting frame 22. The steering lock mechanism 4 is configured to switch between a locked state in which the steering wheel portion 23 is fixed to the connecting frame 22 in a way that prevents it from rotating, and an unlocked state in which the steering wheel portion 23 can rotate relative to the connecting frame 22.

[0036] As shown in Figures 4(a) and 4(b), the handle lock mechanism 4 includes a handle-side cover 41, a movable member 42, a locking member 43, a spring 44, and a frame-side cover 45. Figure 4(a) is a perspective view showing the handle-side cover 41. Figure 4(b) is an exploded perspective view showing the movable member 42, the locking member 43, the spring 44, and the frame-side cover 45.

[0037] The handle-side cover 41 includes a cylindrical portion 41a and a circular portion 41b connected to the lower end of the cylindrical portion 41a. The cylindrical portion 41a is a cylindrical part with a hole that penetrates vertically. The connecting portion 23b (see Figure 3) of the handle portion 23 is inserted through the cylindrical portion 41a from above and fixed in place. The circular portion 41b has a central axis AX1 that extends in the left-right direction. The circular portion 41b is open to the outside in the left-right direction. The circular portion 41b has a gear groove 41c, an inclined portion 41d, and an opening 41e provided inside the circular portion 41b. The teeth of the gear groove 41c are arranged around the central axis AX1. The teeth of the gear groove 41c are not arranged around the entire circumference of the central axis AX1. The angle between the line segment connecting one end of the gear groove 41c to the central axis AX1 and the line segment connecting the other end of the gear groove 41c to the central axis AX1 is, for example, 270°. Teeth of the gear groove 41c are provided in the region where this angle is 270°, and teeth of the gear groove 41c are not provided in the remaining 90° region.

[0038] The inclined portion 41d extends in the circumferential direction around the central axis AX1 and is located closer to (inside) the central axis AX1 than the gear groove 41c. When viewed from the outside in the left-right direction, the inclined portion 41d is inclined so that it protrudes outward in the left-right direction as it approaches the other end located at a position counterclockwise from the first end around the central axis AX1. The handle-side cover 41 has, for example, three inclined portions 41d. The opening 41e is formed at the left-right inner end of the circular portion 41b. The opening 41e is located inside the inclined portion 41d, and the center of the opening 41e is located on the central axis AX1.

[0039] The outer shape of the frame-side cover 45 is substantially the same as that of the handle-side cover 41. The frame-side cover 45 includes a cylindrical portion 45a and a circular portion 45b connected to the upper end of the cylindrical portion 45a. The cylindrical portion 45a is a semi-cylindrical portion with a recess that is open downward in the vertical direction. A part of the connecting frame 22 (including the upper end of the connecting frame 22) is inserted through and fixed to the cylindrical portion 45a. The central axis of the circular portion 45b is the same as the central axis AX1. The circular portion 45b is open inward in the left-right direction. The circular portion 45b has a gear groove 45c and a shaft portion 45d provided inside the circular portion 45b. The gear groove 45c is arranged around the central axis AX1. The height of the teeth of the gear groove 45c, the distance between two adjacent teeth (pitch), and the pitch circle diameter are equal to the height of the teeth, the pitch, and the pitch circle diameter of the gear groove 41c, respectively. The length (tooth width) of the gear groove 45c in the left-right direction is longer than the tooth width of the gear groove 41c. The shaft portion 45d extends inward from the left-right outer end of the circular portion 45b. The shaft portion 45d is inserted through the opening 41e.

[0040] The shaft portion 45d is inserted through the spring 44. The spring 44 expands and contracts in the left-right direction. The natural length of the spring 44 is shorter than the left-right length of the shaft portion 45d. The locking member 43 is a disc-shaped member having a central axis that overlaps with the central axis AX1. Multiple teeth are formed on the outer circumferential surface of the locking member 43. The locking member 43 has a through hole 43a that extends in the left-right direction. The shaft portion 45d is inserted through the through hole 43a so that the spring 44 is positioned between the locking member 43 and the frame-side cover 45. The multiple teeth provided on the outer circumference of the locking member 43 fit into the gear grooves 41c and 45c. The left-right length (thickness) of the locking member 43 is longer than the left-right length of the gear groove 41c. The thickness of the locking member 43 is shorter than the left-right length of the gear groove 45c.

[0041] The movable member 42 is a disc-shaped member having a central axis that coincides with the central axis AX1. A recess 42a corresponding to the inclined portion 41d of the circular portion 41b is formed on the outer circumferential surface of the movable member 42. When viewed from the inside in the left-right direction, the recess 42a is inclined such that it recesses outward in the left-right direction as it approaches the other end, which is located at a position obtained by moving clockwise from the first end around the central axis AX1. The movable member 42 has a through hole 42c that extends in the left-right direction. A shaft portion 45d is inserted through the through hole 42c so that the locking member 43 and the spring 44 are positioned between the movable member 42 and the frame-side cover 45. The movable member 42 has a connecting portion 42b to which the connecting end 31b of the first wire 31, which will be described later, is connected. The connecting portion 42b is located in the circumferential direction around the central axis AX1 in a portion where the gear groove 41c is not provided.

[0042] Next, the operation of the steering wheel lock mechanism 4 will be explained with reference to Figure 5. Figures 5(a) and 5(b) are both cross-sectional views along the VV line in Figure 3. Figure 5(a) shows the steering wheel lock mechanism 4 in the locked state. Figure 5(b) shows the steering wheel lock mechanism 4 in the unlocked state.

[0043] In the locked state, when the handle lock mechanism 4 is locked, the first wire 31 connected to the connecting portion 42b is not pulled. Therefore, as shown in Figure 5(a), the movable member 42 is in contact with the left-right inner end of the circular portion 41b. The locking member 43 is adjacent to the movable member 42. The teeth of the locking member 43 are engaged with both the gear groove 41c and the gear groove 45c. The spring 44 presses the locking member 43 inward in the left-right direction. Because the teeth of the locking member 43 are engaged with both the gear groove 41c and the gear groove 45c, the handle-side cover 41 cannot rotate relative to the frame-side cover 45. As a result, the handle portion 23 is immobile relative to the connecting frame 22.

[0044] When the first wire 31 connected to the connecting portion 42b is pulled while the lock is in the state shown in Figure 5(a), the movable member 42 rotates around the central axis AX1. More specifically, the movable member 42 rotates counterclockwise when viewed from the outside in the left-right direction. As the movable member 42 rotates, the recess 42a slides against the inclined portion 41d, causing the movable member 42 to move outward in the left-right direction. When the movable member 42 moves outward in the left-right direction, the locking member 43 also moves outward in the left-right direction. As a result, as shown in Figure 5(b), the teeth of the locking member 43 disengage from the gear groove 41c and engage only with the gear groove 45c. Consequently, the handle portion 23 becomes rotatable relative to the connecting frame 22, achieving the unlocked state. This allows the user to adjust the angle of the handle portion 23 relative to the connecting frame 22.

[0045] Next, the folding lock mechanism 5 will be described with reference to Figure 6. In the following description, one of the pair of folding lock mechanisms 5 will be described, but the other folding lock mechanism 5 has a similar configuration. Figure 6 is a partially enlarged view showing the stroller body 10. The folding lock mechanism 5 is configured to switch between a locked state in which the connecting frame 22 and the handle portion 23 cannot rotate relative to the main frame 21, and an unlocked state in which the connecting frame 22 and the handle portion 23 can rotate relative to the main frame 21. The connecting frame 22 has an axle member 22a that extends in the left-right direction. The main frame 21 has a link member 21a connected to the axle member 22a. One end of the link member 21a is connected to the axle member 22a, and the other end of the link member 21a is connected to the middle part of the rear leg 212. The seat support frame 24a, the back support frame 24b, the link member 21a, and the link member 51 are connected to the axle member 22a.

[0046] The folding lock mechanism 5 is located on the frame 2 and includes a link member 51, a projection 52 provided at the lower end of the link member 51, a recess 53 provided at the upper end of the link member 21a, and a projection 54 extending inward from the connecting frame 22. The lower end of the link member 51 is provided with a connecting portion 51a that connects to the shaft member 22a. The projection 52 protrudes inward in the left-right direction from the connecting portion 51a. The recess 53 is recessed inward in the left-right direction on the link member 21a. The recess 53 is open upward, and the projection 52 moves in and out of the recess 53 in the up-down direction. A second wire 33, which will be described later, is connected to the projection 54 inside the connecting frame 22, and when the second wire 33 is pulled, the projection 54 moves upward. As a result, the link member 51 connected to the projection 54 moves upward. The upper end of the link member 51 is provided with a projection 51b (see Figure 1) on which a ring member provided on the seat 11 is attached.

[0047] Next, the operation of the folding lock mechanism 5 will be explained. When the folding lock mechanism 5 is locked, the second wire 33 is not pulled. Therefore, the connecting portion 51a of the link member 51 is connected to the shaft member 22a, and the projection 52 is fitted into the recess 53. In this case, even if one tries to rotate the connecting frame 22 and the handle portion 23 relative to the main frame 21, the link member 51 cannot rotate around the shaft member 22a because the projection 52 is fitted into the recess 53. The connecting frame 22 and the handle portion 23 connected to the link member 51 also cannot rotate relative to the main frame 21.

[0048] When the folding lock mechanism 5 is in the locked state, the second wire 33 is pulled, causing the link member 51 to move upward along with the projection 54. As the link member 51 moves upward, the connecting portion 51a separates from the shaft member 22a, and the projection 52 disengages from the recess 53. This allows the connecting frame 22 and the handle portion 23 to rotate relative to the main frame 21, achieving the unlocked state.

[0049] Next, with reference to Figure 7, an example of the configuration of the operating mechanism 3 will be described in detail. The operating mechanism 3 includes a first wire 31, a first displacement member 32, a second wire 33, a second displacement member 34, a connecting member 35, and a switching unit 36. The operating mechanism 3 is located in the center of the gripping portion 23a of the handle portion 23. More specifically, the gripping portion 23a includes a front cover 23c, a rear cover 23d, and an upper cover 23e. The front cover 23c and the rear cover 23d are combined to form a cylindrical member. The front cover 23c covers the front side in the front-rear direction, and the rear cover 23d covers the rear side in the front-rear direction.

[0050] The rear cover 23d has a shaft portion 23f formed in the center in the left-right direction. The shaft portion 23f includes a central axis AX2 that intersects in the front-rear and up-down directions and extends perpendicular to the left-right direction when the stroller 1 is unfolded. When the stroller 1 is unfolded, the central axis AX2 is inclined so as it approaches the front end of the stroller 1 from the rear end, it moves away from the ground surface of the stroller 1. The front cover 23c is provided with an opening 23g through which the shaft portion 23f is inserted. With the shaft portion 23f inserted through the opening 23g, the front cover 23c is assembled with the rear cover 23d.

[0051] The upper cover 23e is a member that covers the front cover 23c and the rear cover 23d from above when the front cover 23c and the rear cover 23d are combined. An opening 23p is formed in the center of the upper cover 23e in the left-right direction. Protrusions are provided on the upper part of the front cover 23c and the upper part of the rear cover 23d, which take on an oval shape when the front cover 23c and the rear cover 23d are combined. These protrusions are inserted into the opening 23p. The gripping part 23a further has a plate member 23h. The plate member 23h is positioned in a recess defined by being surrounded by the protrusions provided on the upper parts of the front cover 23c and the rear cover 23d. The plate member 23h is positioned between the upper cover 23e and the front cover 23c and the rear cover 23d.

[0052] The first wire 31 is located inside the frame 2 and extends in the direction in which the frame 2 extends. More specifically, the first wire 31 extends inside the handle portion 23 and along the handle portion 23. The operating mechanism 3 has two first wires 31 extending in opposite directions. One first wire 31 extends to the right from the handle portion 23 and is connected to the right-side handle lock mechanism 4 (connection portion 42b of the movable member 42). The other first wire 31 extends to the left from the handle portion 23 and is connected to the left-side handle lock mechanism 4 (connection portion 42b of the movable member 42). The first wire 31 has a wire portion 31a and a connecting end 31b. As an example, the connecting end 31b is formed in a spherical shape.

[0053] The first displacement member 32 is a member that pulls the first wire 31. The first displacement member 32 is a disc-shaped member with an opening formed therein. The center of the first displacement member 32 coincides with the central axis AX2. The first displacement member 32 has a first connecting portion 32a that is connected to the connecting end 31b of the first wire 31. As an example, the first connecting portion 32a is composed of a recess into which the spherical connecting end 31b is inserted.

[0054] The second wire 33, like the first wire 31, is located inside the frame 2 and extends in the direction in which the frame 2 extends. More specifically, the second wire 33 extends inside the handle portion 23 and the connecting frame 22, along the handle portion 23 and the connecting frame 22. The operating mechanism 3 has two second wires 33 extending in opposite directions. One second wire 33 extends to the right from the handle portion 23 and is connected to the right-side folding lock mechanism 5. The other second wire 33 extends to the left from the handle portion 23 and is connected to the left-side folding lock mechanism 5. The second wire 33 has a wire portion 33a and a connecting end 33b. The wire portion 33a and the connecting end 33b have the same configuration as the wire portion 31a and the connecting end 31b of the first wire 31.

[0055] The second displacement member 34 is a member that pulls the second wire 33. The second displacement member 34 has the same configuration as the first displacement member 32. The center of the second displacement member 34 coincides with the central axis AX2. The second displacement member 34 has a second connecting portion 34a that is connected to the connecting end 31b of the second wire 33.

[0056] The connecting member 35 has a connecting portion 351, an operating portion 352, and a return spring 353. The connecting portion 351 and the operating portion 352 are integrally formed. The connecting portion 351 is a disc-shaped part with an opening. The operating portion 352 is a lever-shaped knob portion that extends below the connecting portion 351.

[0057] The connecting portion 351 is connected to either the first displacement member 32 or the second displacement member 34 in a manner that allows it to move in conjunction with the first displacement member 32 or the second displacement member 34. The connecting portion 351 is positioned between the first displacement member 32 and the second displacement member 34. The first displacement member 32, the second displacement member 34, and the connecting portion 351 are arranged in a direction that intersects with the left-right direction in which the gripping portion 23a of the handle portion 23 extends. That is, the first displacement member 32, the second displacement member 34, and the connecting portion 351 are arranged so that they overlap when viewed from the direction of arrangement. In this embodiment, the direction of arrangement is the same as the direction in which the central axis AX2 extends. Along the direction of arrangement, the front cover 23c, the second displacement member 34, the connecting portion 351, the first displacement member 32, and the rear cover 23d are arranged in that order. The operating portion 352 moves the connecting portion 351. The operating portion 352 is positioned on the lower surface of the gripping portion 23a of the handle portion 23. When the operating part 352 is pressed, the connecting part 351 rotates clockwise around the shaft part 23f when viewed from the front. One end of the return spring 353 is connected to the first displacement member 32, and the other end opposite to that end is connected to the rear cover 23d. The return spring 353 biases the first displacement member 32 to rotate counterclockwise around the shaft part 23f when viewed from the front.

[0058] The switching unit 36 ​​is configured to selectively switch between a first state in which the connecting unit 351 is linked with the first displacement member 32, and a second state in which the connecting unit 351 is linked with the second displacement member 34. As an example, the switching unit 36 ​​has a rod-shaped member 361, a pressing member 362, and an elastic member 363. The rod-shaped member 361 rotates either the first displacement member 32 or the second displacement member 34 when the connecting unit 351 rotates. The rod-shaped member 361 extends along the direction of arrangement. The central axis of the rod-shaped member 361 coincides with the central axis AX2.

[0059] The rod-shaped member 361 is a cylindrical member with a through hole formed therein in the direction of arrangement. Multiple (for example, four) protrusions 364 are formed on the outer circumferential surface of the rod-shaped member 361. The length of the protrusions 364 in the direction of arrangement is longer than the length of the connecting portion 351 in the direction of arrangement.

[0060] The openings formed in the first displacement member 32, the second displacement member 34, and the connecting portion 351 are cross-shaped and have a shape that allows the protrusions 364 of the rod-shaped member 361 to fit. The shaft portion 23f and the rod-shaped member 361 are inserted through the openings formed in the first displacement member 32, the second displacement member 34, and the connecting portion 351. The rod-shaped member 361 is movable in the direction of arrangement. As a result, the multiple protrusions 364 provided on the outer circumferential surface of the rod-shaped member 361 (in this embodiment, four protrusions 364 provided at 90° intervals around the central axis AX2) can be positioned in one of two states by the operation of the switching portion 36, described later: one in which the protrusions 364 are fitted into the respective openings (cross-shaped protruding recesses) of the connecting portion 351 and the first displacement member 32 (first state), and the other in which the protrusions 364 are fitted into the respective openings (cross-shaped protruding recesses) of the connecting portion 351 and the second displacement member 34 (second state).

[0061] The pressing member 362 is, for example, a button-shaped member that can be pressed by the user. The pressing member 362 is positioned exposed from the rear surface of the gripping portion 23a of the handle portion 23. The pressing member 362 is positioned on the rear surface of the rear cover 23d. The pressing member 362 is configured to change the position of the rod-shaped member 361 in the alignment direction when pressed. In this embodiment, as an example, the pressing member 362 is made movable integrally with the rod-shaped member 361 in the alignment direction. The pressing member 362 has one or more claws 365 that protrude forward in the alignment direction. In this embodiment, as an example, the pressing member 362 has three claws 365 arranged at 120° intervals around the central axis AX2. Each claw 365 is inserted through a through hole (not shown) formed in the rear cover 23d. The front end of the claw 365 is in contact with the rear end of the rod-shaped member 361. When the pressing member 362 is pushed forward in the direction of arrangement, the claw 365 moves the rod-shaped member 361 forward. Note that the direction in which the pressing member 362 is pushed does not necessarily have to coincide with the direction of arrangement. For example, a mechanism that changes the direction of the force generated when the pressing member 362 is pushed may be provided between the pressing member 362 and the rod-shaped member 361. By providing such a mechanism, the direction in which the pressing member 362 is pushed can be set to a direction different from the direction of arrangement, while the rod-shaped member 361 can be moved in the direction of arrangement by the pushing operation of the pressing member 362.

[0062] The elastic member 363 is, for example, a spring. The elastic member 363 is positioned inside the rod-shaped member 361 so as to be wound around the shaft portion 23f. The inner diameter of the rod-shaped member 361 at the rear end of the through hole is smaller than the inner diameter of the rod-shaped member 361 in front of the rear end. That is, the rear end of the rod-shaped member 361 has a portion that protrudes inward. The elastic member 363 is in contact with this protruding portion. As a result, the elastic member 363 biases the rod-shaped member 361 toward the pressing member 362.

[0063] As shown in Figure 8, when the rod-shaped member 361 is in the rearward position (for example, when the pressing member 362 is not being pressed and the rear end of the rod-shaped member 361 is in contact with the rear cover 23d due to the biasing force of the elastic member 363), in the arrangement direction, the convex portion 364 of the rod-shaped member 361 straddles the connecting portion 351 and the first displacement member 32, but does not straddle the second displacement member 34.

[0064] As shown in Figure 9, when the rod-shaped member 361 is pushed forward (for example, when the front end of the rod-shaped member 361 is in contact with the front cover 23c), in the direction of arrangement, the protrusion 364 of the rod-shaped member 361 straddles the second displacement member 34 and the connecting portion 351, but does not straddle the first displacement member 32.

[0065] The operation of the operating mechanism 3 will be explained with reference to Figures 8 to 10. As shown in Figure 8, when the rod-shaped member 361 is in the rearward position (the pressing member 362 is not pressed in), the protrusion 364 straddles the connecting part 351 and the first displacement member 32. Therefore, when the operating part 352 is moved clockwise around the shaft 23f when viewed from the front in the arrangement direction, the connecting part 351 also rotates in conjunction with it. Because the protrusion 364 of the rod-shaped member 361 is sandwiched in the opening (recess) of the connecting part 351, the rod-shaped member 361 also rotates in conjunction with the rotation of the connecting part 351. Because the protrusion 364 of the rod-shaped member 361 is sandwiched in the opening (recess) of the first displacement member 32, the first displacement member 32 also rotates in conjunction with the rotation of the rod-shaped member 361. In other words, the state shown in Figure 8 corresponds to the first state described above. Thus, in the first state, the operating part 352 is operated and the connecting part 351 rotates, causing the first connecting part 32a of the first displacement member 32, which is connected to the first wire 31, to be displaced. Specifically, the first connecting part 32a rotates clockwise around the shaft part 23f when viewed from the front in the direction of arrangement. As a result, the wire part 31a of the first wire 31 is pulled toward the operating mechanism 3. Consequently, the lock of the handle lock mechanism 4 is released, and the handle lock mechanism 4 enters the unlocked state.

[0066] As shown in Figure 8, when the rod-shaped member 361 is in the rearward position, the protrusion 364 does not straddle the second displacement member 34 in the alignment direction. Therefore, even if the rod-shaped member 361 rotates clockwise around the shaft portion 23f when viewed from the front in the alignment direction, the second displacement member 34 does not rotate. In other words, in the first state (Figure 8), the rotation of the connecting portion 351 in response to the operation of the operating portion 352 is transmitted to the first displacement member 32 but not to the second displacement member 34, thus maintaining the locked state of the folding lock mechanism 5. That is, in the first state, the operation of the operating portion 352 allows for selective unlocking of the handle lock mechanism 4.

[0067] As shown in Figure 9, when the rod-shaped member 361 is in the forward position (the pressing member 362 is pushed in), the protrusion 364 straddles the connecting portion 351 and the second displacement member 34. Therefore, when the operating portion 352 is moved clockwise around the shaft portion 23f when viewed from the front in the direction of arrangement, the connecting portion 351, the rod-shaped member 361, and the second displacement member 34 rotate in conjunction. In other words, the state shown in Figure 9 corresponds to the second state described above. Thus, in the second state, when the operating portion 352 is operated and the connecting portion 351 rotates, the second connecting portion 34a connected to the second wire 33 in the second displacement member 34 is displaced. Specifically, the second connecting portion 34a rotates clockwise around the shaft portion 23f when viewed from the front in the direction of arrangement. Consequently, the wire portion 33a of the second wire 33 is pulled toward the operating mechanism 3. As a result, the folding lock mechanism 5 is released, and the folding lock mechanism 5 enters an unlocked state. This allows the user to transform the stroller 1 from the unfolded state (see Figure 2(a)) to the folded state (see Figure 2(b)).

[0068] As shown in Figure 9, when the rod-shaped member 361 is pushed forward, the protrusion 364 does not straddle the first displacement member 32 in the alignment direction. Therefore, even if the rod-shaped member 361 rotates clockwise around the shaft portion 23f when viewed from the front in the alignment direction, the first displacement member 32 does not rotate. In other words, in the second state (Figure 9), the rotation of the connecting portion 351 in response to the operation of the operating portion 352 is transmitted to the second displacement member 34 but not to the first displacement member 32, thus maintaining the locked state of the handle lock mechanism 4. That is, in the second state, the operation of the operating portion 352 allows for selective unlocking of the folding lock mechanism 5.

[0069] Furthermore, when the user releases the pressing member 362 from the state shown in Figure 9, the elastic member 363 pushes back the rod-shaped member 361 and the pressing member 362, automatically returning to the state shown in Figure 8.

[0070] In the stroller 1 described above, the user can switch between a first state (Figure 8) and a second state (Figure 9) by operating the switching unit 36, thereby switching between a state in which the handle lock mechanism 4 can be released by operating the operation unit 352 and a state in which the folding lock mechanism 5 can be released by operating the operation unit 352. This makes it possible to perform two different operations with the same lever operation (operation of the operation unit 352). Furthermore, in the above configuration, the first displacement member 32 and the second displacement member 34 are arranged in an arrangement direction that intersects with the left-right direction, thereby suppressing an increase in the width dimension of the operation mechanism 3 in the left-right direction. This makes it possible to appropriately secure space for the user's grip on the handle part 23 (the part in the width direction that is outside the part in which the first displacement member 32 and the second displacement member 34 are housed). As a result, the above configuration improves user operability.

[0071] The connecting portion 351 is located between the first displacement member 32 and the second displacement member 34. The switching portion 36 includes a rod-shaped member 361 extending in the direction of arrangement and a pressing member 362 that is exposed to the outside of the frame 2 from the handle portion 23 and is configured to change the position of the rod-shaped member 361 in the direction of arrangement when pressed. The operating portion 352 is configured to rotate the connecting portion 351 around an axis along the direction of arrangement. In the first state (Figure 8), when the pressing member 362 is not pressed in, the first connecting portion 32a is displaced as the first displacement member 32 rotates via the rod-shaped member 361 in conjunction with the rotation of the connecting portion 351. In the second state (Figure 9), when the pressing member 362 is pressed in, the second connecting portion 34a is displaced as the second displacement member 34 rotates via the rod-shaped member 361 in conjunction with the rotation of the connecting portion 351. With this configuration, the first state (Figure 8) and the second state (Figure 9) can be easily switched by pressing or not pressing the pressing member 362 exposed on the outside of the frame 2, thereby further improving user operability.

[0072] The switching unit 36 ​​biases the rod-shaped member 361 toward the pressing member 362. Therefore, in a natural state where no external force is applied to the pressing member 362, the elastic member 363 biases the rod-shaped member 361 toward the pressing member 362 (i.e., the pressing member 362 is not pushed in the alignment direction). As a result, when no external force is applied to the pressing member 362, the system can always be in a first state where the handle lock mechanism 4 can be unlocked by operating the operating unit 352. This prevents the user from mistakenly selecting the unlock operation for the handle lock mechanism 4 instead of the unlock operation for the folding lock mechanism 5.

[0073] The operating section 352 is located on the underside of the handle section 23, and the switching section 36 (pressing member 362) is exposed from the rear surface of the handle section 23. With this configuration, for example, the switching section 36 (pressing member 362) can be operated with the thumb of one hand while the operating section 352 is operated with the remaining fingers of the same hand. In other words, both the operation of the switching section 36 and the operation section 352 can be performed with one hand. This further improves user operability.

[0074] The operating section 352 and the connecting section 351 are integrally formed. With this configuration, there is no need to prepare the operating section 352 and the connecting section 351 as separate components and assemble them separately, thus reducing the number of parts and the assembly time.

[0075] The stroller body 10A, including the operating mechanism 3A according to the first modified example, will be described with reference to Figures 11 to 13. Figure 11 is a partially enlarged view showing the stroller body 10A. Figure 12 is an exploded perspective view showing the operating mechanism 3A. Figure 13 is a diagram for explaining the operation of the operating mechanism 3A. The operating mechanism 3A mainly differs from the operating mechanism 3 in that it has a connecting member 61 (connecting part) and a lever 62 (operating part) instead of the connecting member 35.

[0076] The stroller body 10A has a handle portion 23A. The handle portion 23A includes a gripping portion 23j and a connecting portion 23b. The gripping portion 23j has a front cover 23k and a rear cover 23m. When the front cover 23k and the rear cover 23d are combined, a cylindrical member is formed which has an insertion hole that is open downwards. A lever 62 is positioned in this insertion hole.

[0077] The connecting member 61 is connected to either the first displacement member 32 or the second displacement member 34 in a manner that allows it to interlock with the first displacement member 32 or the second displacement member 34. The connecting member 61 is positioned between the first displacement member 32 and the second displacement member 34. Along the direction of arrangement, the front cover 23k, the second displacement member 34, the connecting member 61, the first displacement member 32, and the rear cover 23m are arranged in that order. The connecting member 61 has a disc-shaped main body portion 61a and a projection 61b that penetrates the main body portion 61a. The projection 61b is provided on a portion 61c that bulges radially around the central axis AX2 at the outer edge of the main body portion 61a. The distance from the central axis AX2 to the projection 61b is longer than the distance from the central axis AX2 to the outer edge of the first displacement member 32 and the distance from the central axis AX2 to the outer edge of the second displacement member 34. In other words, in the radial direction centered on the central axis AX2, the projection 61b is positioned outside the first displacement member 32 and the second displacement member 34. The connecting member 61 has an opening that has the same shape as the opening of the first displacement member 32.

[0078] Lever 62 moves the connecting member 61. Lever 62 is located on the lower surface of the gripping portion 23j of the handle portion 23A. Lever 62 is a rectangular parallelepiped member that is open upwards. The front and rear surfaces of lever 62 are provided with recesses 62a that are recessed from the upper end of lever 62. Lever 62 has a first portion 62b and a second portion 62c that define the recesses 62a from the left and right directions. The first portion 62b and the second portion 62c are provided with a plurality of ribs 62d. The ribs 62d extend from the upper ends of the first portion 62b and the second portion 62c to the middle portions of the first portion 62b and the second portion 62c. The front cover 23k and the rear cover 23m have a plurality of rails 23n into which the ribs 62d fit. The rails 23n extend vertically on the inner surfaces of the front cover 23k and the rear cover 23m. The movement path of the lever 62 is restricted by the rib 62d fitting into the rail 23n. The lever 62 has a projection support portion 62e that is recessed downward at the upper end of the first portion 62b. The projection support portion 62e supports the projection 61b.

[0079] Next, the operation of the operating mechanism 3A will be explained. When the lever 62 of the operating mechanism 3A is moved upward, the projection 61b supported by the projection support portion 62e moves upward. As the projection 61b moves upward, the connecting member 61 rotates clockwise around the shaft portion 23f.

[0080] In the operating mechanism 3A, the lever 62 (operating part) and the connecting member 61 (connecting part), which are operated by the user, are configured as separate components. In the operating mechanism 3 described earlier, the operating part 352 and the connecting part 351 are integrally formed, but as in the operating mechanism 3A, the operating part and the connecting part may be configured as separate components. In the operating mechanism 3 described above, for example, if the operating part 352 is damaged, it becomes necessary to replace the entire connecting member 35, which includes both the operating part 352 and the connecting part 351. On the other hand, in the operating mechanism 3A, if the lever 62 is damaged, only the lever 62 needs to be replaced, thus reducing the cost of parts replacement compared to the case where the operating part 352 and the connecting part 351 are integrally formed.

[0081] The operating mechanism 3B relating to the second modified example will be described with reference to Figure 14. Figure 14 is a schematic diagram for explaining the operating mechanism 3B. Figure 14(a) schematically shows the operation of each member in the first state, and Figure 14(b) schematically shows the operation of each member in the second state. The operating mechanism 3B includes a first wire 31, a second wire 33, a first displacement member 71, an operating section 72, a second displacement member 73, a connecting section 74, and a switching section 75. The first displacement member 71, the operating section 72, and the second displacement member 73 are arranged along the direction of arrangement. In Figures 14(a) and (b), the upper section schematically shows the state of the first displacement member 71, the middle section schematically shows the state of the operating section 72, and the lower section schematically shows the state of the second displacement member 73.

[0082] The first displacement member 71 has a first movable member 711 that is movable in a first direction D1 that intersects the left-right direction and the alignment direction. The first displacement member 71 also has a pair of first connecting portions 712 connected to the first movable member 711 on both the left and right sides of the first movable member 711. Each first connecting portion 712 is supported by the first movable member 711 so as to be movable in the left-right direction in accordance with the movement of the first movable member 711 in the first direction D1. As an example, each first connecting portion 712 is supported by a member (not shown, e.g., a rail member) so as not to be displaced in the first direction D1 but not to be restricted in the left-right direction, and then supported by the first movable member 711.

[0083] As shown in the upper part of Figure 14, the first movable member 711 is formed in a plate shape, as an example. A pair of grooves 71a are provided on both left and right edges of the first movable member 711, which are inclined to extend inward in the left-right direction as they are directed toward one side in the first direction D1 (downward in the example shown in Figure 14). The first movable member 711 is also provided with an L-shaped groove 71b, which consists of a portion 71b1 extending in the left-right direction and a portion 71b2 connected to portion 71b1 and extending in the first direction D1. Portion 71b1 opens at the end of the first movable member 711 in the first direction D1.

[0084] The first connecting portion 712 has a plate-shaped base portion 712a positioned offset from the first movable member 711 in the alignment direction (the direction perpendicular to the plane of the paper in Figure 14), and a projection portion 712b provided on the base portion 712a on the side facing the first movable member 711 and projecting in the alignment direction. The first connecting portion 712 is connected to the first movable member 711 by the projection portion 712b being inserted into the groove portion 71a of the first movable member 711. In Figure 14, when the first movable member 711 moves upward along the first direction D1, as the groove portion 71a moves upward, the position of the projection portion 712b supported by the groove portion 71a moves inward in the left-right direction. As a result, the first connecting portion 712 (base portion 712a and projection portion 712b) moves inward in the left-right direction, and the first wire 31 is pulled inward in the left-right direction.

[0085] The second displacement member 73 is the same type of member as the first displacement member 71, and includes a second moving member 731 similar to the first moving member 711, and a pair of second connecting parts 732 similar to the pair of first connecting parts 712. As an example, the second displacement member 73 is positioned on the opposite side of the operating part 72 from the side where the first displacement member 71 is located. The second moving member 731 has a pair of grooves 73a similar to the pair of grooves 71a, and a groove 73b similar to the groove 71b. The groove 73b has a portion 73b1 extending in the left-right direction, and a portion 73b2 connected to portion 73b1 and extending in the first direction D1. Viewed from the direction of arrangement, portion 73b2 of the second displacement member 73 is provided in a position that does not overlap with portion 71b2 of the first displacement member 71 (a position offset from each other in the left-right direction).

[0086] The second connecting portion 732 has a plate-shaped base portion 732a positioned offset from the second movable member 731 in the arrangement direction (the direction perpendicular to the plane of the paper in Figure 14), and a projection portion 732b provided on the second movable member 731 side of the base portion 732a and projecting in the arrangement direction. The second connecting portion 732 is connected to the second movable member 731 by the projection portion 732b being inserted into the groove portion 73a of the second movable member 731. In Figure 14, when the second movable member 731 moves upward along the first direction D1, as the groove portion 73a moves upward, the position of the projection portion 732b supported by the groove portion 73a moves inward in the left-right direction. As a result, the second connecting portion 732 (base portion 732a and projection portion 732b) moves inward in the left-right direction, and the second wire 33 is pulled inward in the left-right direction.

[0087] The operating section 72 is movable in a first direction D1. The operating section 72 is, for example, a plate-shaped member and has a groove 72a extending in the left-right direction. In the default state (when neither the first displacement member 71 nor the second displacement member 73 is displaced), the groove 72a overlaps with the portion 71b1 of the groove 71b of the first displacement member 71 and the portion 73b1 of the groove 73b of the second displacement member 73 in the alignment direction.

[0088] The connecting portion 74 is configured, for example, as a rod-shaped member that extends in the direction of arrangement so as to be inserted into the groove 72a of the operating portion 72, the portion 71b1 of the groove 71b of the first displacement member 71, and the portion 73b1 of the groove 73b of the second displacement member 73.

[0089] For example, the switching section 75 is connected to a rod-shaped connecting section 74 and is configured as a knob that can move the connecting section 74 in the left-right direction.

[0090] The width of the connecting portion 74 in the left-right direction is smaller than the width of portion 71b2 of the groove 71b of the first displacement member 71 and the width of portion 73b2 of the groove 73b of the second displacement member 73. Therefore, when the connecting portion 74 is in a position overlapping with portion 71b2, and the operating portion 72 is moved upward in the first direction D1 as shown in Figure 14, the connecting portion 74 will pass through portion 71b2. Similarly, when the connecting portion 74 is in a position overlapping with portion 73b2, and the operating portion 72 is moved upward in the first direction D1 as shown in Figure 14, the connecting portion 74 will pass through portion 73b2.

[0091] Next, the operation of the above-mentioned operating mechanism 3B will be explained. As shown in the middle of Figure 14(a), the connecting portion 74 is positioned so that it overlaps with the portion 73b2 of the groove 73b of the second displacement member 73, but does not overlap with the portion 71b2 of the groove 71b of the first displacement member 71 (first state). In this state, when the user pushes the operating portion 72 upward along the first direction D1, the connecting portion 74 inserted into the groove 72a of the operating portion 72 will similarly move along the first direction D1. As a result, as shown in the upper part of Figure 14(a), the first moving member 711 also moves along the first direction D1 in conjunction with the movement of the connecting portion 74. As a result, the first connecting portion 712 is displaced inward in the left-right direction, and the first wire 31 is pulled, thereby releasing the lock of the handle lock mechanism 4. On the other hand, as shown in the lower part of Figure 14(a), the connecting portion 74 passes through portion 73b2 of the second displacement member 73, and the second displacement member 73 does not interfere with the connecting portion 74, so the second moving member 731 does not displace in the first direction D1. As a result, in the first state (in the example of Figure 14, the state in which the connecting portion 74 is located on the left side of the illustration), the handle lock mechanism 4 can be unlocked without unlocking the folding lock mechanism 5 by moving the operating portion 72 along the first direction D1.

[0092] Figure 14(b) shows the second state, as shown in the middle section, where the connecting portion 74 is positioned so that it overlaps with the portion 71b2 of the groove 71b of the first displacement member 71, but does not overlap with the portion 73b2 of the groove 73b of the second displacement member 73. In this state, when the user pushes the operating portion 72 upward in the first direction D1, the connecting portion 74, which is inserted into the groove 72a of the operating portion 72, will similarly move along the first direction D1. As a result, as shown in the lower section of Figure 14(b), the second moving member 731 will also move along the first direction D1 as the connecting portion 74 moves. As a result, the second connecting portion 732 is displaced inward in the left-right direction, and the second wire 33 is pulled, thereby releasing the lock of the folding lock mechanism 5. On the other hand, as shown in the upper part of Figure 14(b), the connecting portion 74 passes through portion 71b2 of the first displacement member 71, and the first displacement member 71 does not interfere with the connecting portion 74, so the first moving member 711 does not displace in the first direction D1. As a result, in the second state (in the example of Figure 14, the state in which the connecting portion 74 is located on the right side of the illustration), the folding lock mechanism 5 can be unlocked without unlocking the handle lock mechanism 4 by moving the operating portion 72 along the first direction D1.

[0093] As described above, in the operating mechanism 3B, the first displacement member 71 has a first moving member 711 that is movable in a first direction D1 intersecting the left-right direction and the arrangement direction, and the first connecting portion 712 of the first displacement member 71 is supported by the first moving member 711 so as to be movable in the left-right direction in accordance with the movement of the first moving member 711 in the first direction D1. The second displacement member 73 has a second moving member 731 that is movable in the first direction D1, and the second connecting portion 732 of the second displacement member 73 is supported by the second moving member 731 so as to be movable in the left-right direction in accordance with the movement of the second moving member 731 in the first direction D1. In the first state (see Figure 14(a)), when the connecting portion 74 is moved in the first direction D1 by the operating portion 72, the first moving member 711 moves in the first direction D1. In the second state (see Figure 14(b)), when the connecting portion 74 is moved in the first direction D1 by the operating portion 72, the second moving member 731 moves in the first direction D1.

[0094] According to the operating mechanism 3B described above, the first displacement member 71 can easily realize a configuration in which the first wire 31 is pulled by converting the displacement of the first moving member 711 in the first direction D1 into the displacement of the first connecting part 712 in the left-right direction. Similarly, the second displacement member 73 can easily realize a configuration in which the second wire 33 is pulled by converting the displacement of the second moving member 731 in the first direction D1 into the displacement of the second connecting part 732 in the left-right direction.

[0095] Although several embodiments of this disclosure have been described above, this disclosure is not limited to the configurations shown in each of the embodiments and modifications described above. The materials and shapes of each configuration are not limited to the specific materials and shapes described above, but a variety of other materials and shapes can be used. Furthermore, some of the configurations included in each of the embodiments and modifications described above may be omitted or modified as appropriate, or they can be combined in any way.

[0096] In the stroller 1 described above, the first wire 31 was connected to the handle lock mechanism 4 and the second wire 33 was connected to the folding lock mechanism 5. However, the objects that can be unlocked by the first wire 31 are not limited to the handle lock mechanism 4, and the objects that can be unlocked by the second wire 33 are not limited to the folding lock mechanism 5. For example, the first wire 31 may be connected to the folding lock mechanism 5, and the second wire 33 may be connected to the handle lock mechanism 4. Furthermore, the objects that can be unlocked are not limited to the angle adjustment and folding operation of the handle. For example, the first wire 31 or the second wire 33 may be connected to a lock mechanism that switches between a state in which the wheel angle can be changed and a state in which it is fixed (wheel braking), or an operation that moves the connecting frame 22 described above to switch between a rear-pushing state and a front-pushing state. In addition, in the above embodiment, an operating mechanism that can switch between two different unlocking operations was exemplified, but the operating mechanism may be configured to switch between three or more different unlocking operations. In other words, the operating mechanism may be provided with a third displacement member in addition to the first and second displacement members, and in addition to the first and second wires, a third wire connected to the third displacement member (a wire connected to a locking mechanism different from the target of the first and second wires' unlocking) may be provided.

[0097] Furthermore, while the operating mechanisms 3, 3A, and 3B described above include, as specific examples of operating parts, a rotary lever member (operating part 352), a push-in lever member (lever 62, operating part 72), etc., the shape and type of the operating part are not limited to these. [Explanation of Symbols]

[0098] 1... Stroller, 2... Frame, 3,3A,3B... Operating mechanism, 4... Handle lock mechanism (first lock mechanism), 5... Folding lock mechanism (second lock mechanism), 10,10A... Stroller body, 23... Handle section, 31... First wire, 32,71... First displacement member, 32a,712... First connection section, 33... Second wire, 34,73... Second displacement member, 34a,732... Second connection section, 36,75... Switching section, 61... Connecting member (connecting section), 62... Lever (operating section), 74,351... Connecting section, 72,352... Operating section, 361... Rod-shaped member, 362... Pressing member, 363... Elastic member, 711... First moving member, 731... Second moving member, D1... First direction.

Claims

1. The stroller body has a hollow frame including a handle section that extends in the left-right direction, The aforementioned stroller body is, The operating mechanism is located in the center of the handle portion, A first locking mechanism is arranged in the frame, A second locking mechanism is arranged in the frame, It has, The aforementioned operating mechanism is Inside the frame, a first wire connected to the first locking mechanism, A first displacement member having a first connecting portion connected to the first wire, which moves the first wire by the displacement of the first connecting portion, Inside the frame, a second wire connected to the second locking mechanism, A second displacement member having a second connecting portion connected to the second wire, which moves the second wire by the displacement of the second connecting portion, A connecting portion connected to the first displacement member or the second displacement member in conjunction with it, A switching unit that selectively switches between a first state in which the connecting portion is linked with the first displacement member and a second state in which the connecting portion is linked with the second displacement member, An operating unit for moving the aforementioned connecting part, It has, If the connecting portion moves in the first state, the first connecting portion will be displaced while the second connecting portion will not be displaced, thereby releasing the lock on the first locking mechanism while keeping the lock on the second locking mechanism. If the connecting portion moves in the second state, the second connecting portion will be displaced while the first connecting portion will not be displaced, thereby releasing the lock on the second locking mechanism while keeping the lock on the first locking mechanism. A stroller in which the first displacement member and the second displacement member are arranged in an arrangement direction that intersects the left-right direction.

2. The connecting portion is located between the first displacement member and the second displacement member. The aforementioned switching unit is A rod-shaped member extending in the aforementioned arrangement direction, A pressing member is provided, which is exposed to the outside of the frame from the handle portion and is configured to change the position of the rod-shaped member in the arrangement direction when pressed, It has, The operating unit is configured to allow the connecting unit to rotate around an axis along the arrangement direction. In the first state, when the pressing member is not pressed in, the first displacement member rotates via the rod-shaped member in conjunction with the rotational movement of the connecting portion, causing the first connecting portion to be displaced. In the second state in which the pressing member is pressed, the second displacement member rotates via the rod-shaped member in conjunction with the rotational movement of the connecting portion, thereby displacing the second connecting portion, as described in claim 1.

3. The stroller according to claim 2, wherein the switching section further comprises an elastic member that biases the rod-shaped member toward the pressing member.

4. The operating section is located on the lower surface of the handle section. The stroller according to any one of claims 1 to 3, wherein the switching part is positioned so as to be exposed from the rear surface of the handle part.

5. The stroller according to any one of claims 1 to 3, wherein the operating section and the connecting section are integrally formed.

6. The stroller according to any one of claims 1 to 3, wherein the operating section and the connecting section are formed separately from each other.

7. The first displacement member has a first moving member that is movable in a first direction intersecting the left-right direction and the arrangement direction, The first connection portion of the first displacement member is supported by the first moving member so as to be movable in the left-right direction in accordance with the movement of the first moving member in the first direction. The second displacement member has a second movable member that is movable in the first direction, The second connection portion of the second displacement member is supported by the second moving member so as to be movable in the left-right direction in accordance with the movement of the second moving member in the first direction. In the first state, when the connecting portion is moved by the operating portion, the first moving member moves in the first direction. The stroller according to claim 1, wherein in the second state, when the connecting portion is moved by the operating portion, the second moving member moves in the first direction.

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