JP6629108B2 - Stroller handle member connection structure - Google Patents

Description

  The present invention relates to a handle of a baby carriage, and more particularly to a structure capable of adjusting the angle of the handle.

  The baby carriage travels forward or backward when the baby is seated on the baby carriage and the baby guardian grips the handle (also referred to as a push rod or push rod) of the baby carriage and applies thrust to the baby carriage. Conventionally, as an angle adjusting mechanism for adjusting the height and position of the handle to a position that is easy for a parent to use, for example, JP-A-2000-159121 (Patent Document 1) and JP-A-2005-132245 (Patent) Document 2) and Japanese Patent Application Laid-Open No. 2007-98996 (Patent Document 3) are known. The stroller described in these patent documents includes an inverted U-shaped push rod. The inverted U-shaped push bar is composed of three members: a pair of left and right lower end regions and an upper end region connecting these lower end regions. The upper end region of the push rod extends in the vehicle width direction of the stroller, and both ends are rotatably connected to a pair of left and right lower end regions. The upper end area is a grip. The guardian grips the upper end area and applies thrust to the stroller, causing the stroller to run or climb over a step on the road.

  A first internal gear connected to the upper end area, a second internal gear connected to the lower end area, and an external gear as a separate part are provided at a connection point between the upper end area and the lower end area. All the gears have the same radius and the same number of teeth, are arranged coaxially with the center of rotation of the upper end region, and two internal gears and one external gear mesh with each other over the entire circumference. Then, the relative angle between the first and second internal gears, that is, the rotation angle of the upper end region of the push rod, is adjusted in units of the tooth pitch interval.

JP 2000-159121 A JP 2005-132245 A JP 2007-98996 A

  In the conventional push rod and push rod angle adjusting mechanisms as described above, the following problems occur. In other words, the external gear is passed through the center hole of the first or second internal gear, displaced in the axial direction, and meshes with or releases the internal gear. Therefore, between the first and second internal gears and the external gear, there is a slight clearance (clearance) opened in the circumferential direction to allow the external gear to slide. Then, rattling occurs in the circumferential gap between the internal gear and the external gear. Although the circumferential gap between the internal gear and the external gear is small, the distance from the center of rotation to the above-described circumferential gap and the distance from the center of rotation to the grip (upper end area of the push rod) are determined. By comparison, the latter is several tens of times larger. For this reason, the circumferential gap is amplified by several tens of times with the rotation center as a fulcrum, and a guardian grasping the upper end region of the push rod notices the rattle of the push rod remarkably. Such rattling in the upper end region of the push bar not only impairs the rigidity of the push bar but also gives a parental discomfort and deteriorates operability.

  In particular, since the conventional design idea was to design the diameter of the internal gear and the external gear so as to be as small as possible, the distance from the center of rotation to the gripping hand (upper end region of the push rod) was set at the center of rotation. From the gear was much larger than the circumferential gap. Therefore, with the handle of the conventional baby carriage, the backlash remains large, and no countermeasures are taken.

  The present invention has been made in view of the above circumstances, and has as its object to provide a push rod with an angle adjusting mechanism that reduces rattle of the push rod.

  Conventionally, the reason why the diameters of the internal gear and the external gear are designed to be as small as possible is that the handle of the conventional baby carriage is provided with a cable for operating the baby carriage. The cable is passed through the upper end region and the lower end region of the push rod, and is arranged so as to cross the connection point between the upper end region and the lower end region. In the handle of the conventional baby carriage, the cable receiving space in which the cable is arranged is arranged on the outer diameter side of the first internal gear and the second internal gear. The connecting portion between the upper end region and the lower end region is formed with a size that is inconspicuous, including the cable receiving space. For this reason, the dimensions of the first internal gear, the second internal gear, and the external gear were small.

  Alternatively, even when the stroller operating cable is not provided on the handle of the conventional stroller, the design of the push rod is preferably a specification such as a thin pipe having a constant outer diameter, the cross-sectional dimension of the upper end area, and the lower end area. It has been customary that the cross-sectional dimensions of these and the dimensions of these connecting portions are commonly reduced.

  Nevertheless, the present inventors have overturned the conventional design concept and came up with the idea that rattling of the push rod can be reduced by increasing the diameter of the internal gear and the external gear.

  The handle member connecting structure for a stroller according to the present invention is provided at a push rod included in a body frame of the stroller, a handle member rotatably connected to an end of the push rod, and a connecting portion between the push rod and the handle member. And a handle angle adjustment mechanism for adjusting the rotation angle of the handle member. The handle angle adjusting mechanism includes an engagement member disposed along an axis that is a rotation center of the handle member, and a push member provided at an end of the push rod and capable of engaging with the engagement member so that the handle member cannot rotate relative to the engagement member. It has a rod-side engaged portion and a handle-side engaged portion provided on the handle member and capable of engaging with the engaging member so as to be relatively non-rotatable. The engagement portion between the push rod-side engaged portion and / or the handle-side engaged portion and the engaging member is provided on one of the engaged portion and the engaging member, and is circumferentially centered on the axis. And a plurality of protrusions provided on the other side and engaged with any of the plurality of protrusions. Either one of an engaging portion between the engaging member and the push rod-side engaged portion and an engaging portion between the engaging member and the handle-side engaged portion is disposed at a position relatively close to the axis. And the other is located relatively far from the axis. The engaging member is displaced to engage with both the push rod side engaged portion and the handle side engaged portion, and a handle angle lock position, and the handle side engaged portion and the push rod side engaged portion And a handle angle free position disengaged with at least one of the handle angles.

  According to the present invention, with respect to the axis that is the center of rotation of the handle member, the engagement portion between the engagement member and the push rod side engaged portion is disposed at a position relatively close to the axis, and The engagement portion with the handle member side engaged portion is disposed at a position relatively far from the axis. As described above, since the engaging portion between the engaging member and the handle member-side engaged portion is far from the axis, the circumferential gap between the engaging member and the handle member-side engaged portion is smaller than that in the conventional art. In comparison, the degree of amplification as the fulcrum of the axis is reduced.

  Therefore, according to the present invention, it is achieved that the diameter of the handle member side engaged portion corresponding to the internal gear and the diameter of the engaging member corresponding to the external gear are both increased. Of the handle member can be reduced, and rattle of the handle member felt by a guardian grasping the handle member can be reduced as compared with the related art.

  Further, even if the diameter of the handle member-side engaged portion and the engaging member corresponding to one of the engaging portions is increased, the diameter of the push rod-side engaged portion and the engaging member corresponding to the other of the engaging portions is increased. The dimensions can be reduced as before. Therefore, a cable receiving space can be secured on the outer diameter side of the push rod side engaged portion and the engaging member.

  Alternatively, according to the present invention, the engagement portion between the engagement member and the engaged portion on the handle member side is disposed relatively close to the axis, and the engagement between the engagement member and the engaged portion on the push rod side is performed. The portion may be disposed relatively far away from the axis, and the diameter of the engaging member and the diameter of the push rod side engaged portion are both increased, so that a handle member felt by a guardian gripping the handle member Can be reduced more than before.

  Note that the angle adjustment of the handle member is performed with a minimum pitch in a circumferential pitch between the plurality of convex portions. The combination of the plurality of convex portions and the concave and convex portions for adjusting the handle angle may be provided only at the engagement portion between the push rod side engaged portion and the engaging member, or may be provided on the handle side engaged portion. It may be provided only at an engagement portion with the engagement member, or may be provided at both engagement portions. The number of push rods is not particularly limited, and two push rods may be provided, or one push rod may be provided.

  The engaging member is desirably a single component, but may be formed by connecting a plurality of components and may be made extendable and contractible. The engaging member may be displaced, for example, in the direction of the axis that is the center of rotation, and may be in the handle angle locked position on one side in the axial direction and in the handle angle free position on the other side in the axial direction. In the handle angle locked position, the handle-side engaged portion is non-rotatably held with respect to the push rod-side engaged portion. At the handle angle free position, the handle-side engaged portion is allowed to rotate with respect to the push rod-side engaged portion. As one embodiment of the present invention, the handle angle adjusting mechanism further includes a push rod-side base provided on the end side of the push rod, and a handle-side base provided on the handle member side, and the push rod-side base has an axis. The handle-side base is located on the other side in the axial direction. The engagement member is disposed between the push rod-side base and the handle-side base, and further includes a small-diameter outer peripheral portion disposed on one axial side and a large-diameter outer peripheral portion disposed on the other axial side. The engagement portion between the push rod side engaged portion and the engagement member is provided on the push rod side base portion and the small diameter outer peripheral portion. The engagement portion between the handle-side engaged portion and the engagement member is provided on the handle-side base portion and the large-diameter outer peripheral portion.

  As a preferred embodiment of the present invention, the engaging member is separated from the push rod side engaged portion in the axial direction at the handle angle free position and faces the push rod side engaged portion, and the push rod side at the handle angle locked position. The engaged portion overlaps the axial position of the engaged portion and engages with the push rod side engaged portion, and at least one of the engaging member and the push rod side engaged portion is tapered in the axial direction toward the mating side. It is formed in a tapered shape. According to this embodiment, the circumferential gap between the push rod-side engaged portion and the engaging member can be reduced by the taper. And the rattling of the handle member about the axis can be reduced. The taper may be formed only on the engaging member, may be formed only on the push rod side engaged portion, or may be formed on both. In another embodiment, the push rod-side engaged portion and the engaging member may be engaged with each other by simply fitting the unevenness without having a taper.

  As a preferred embodiment of the present invention, the handle angle adjusting mechanism has a handle-side cylindrical wall that is erected on the handle-side base about the axis and a handle-side cylindrical wall that is erected on the push rod side about the axis. A push rod-side cylindrical wall having a small diameter, wherein the push rod-side cylindrical wall is capable of receiving a small-diameter outer peripheral portion of the engagement member, and the handle-side cylindrical wall is capable of receiving a large-diameter outer peripheral portion of the engagement member. The push rod side engaged portion is provided on the inner peripheral surface of the push rod side cylindrical wall, and the handle side engaged portion is provided on the inner peripheral surface of the handle side cylindrical wall. According to this embodiment, as an example, the circular engaging member can be engaged over the entire circumference of the engaged portion around the axis, and the engaging force at the engaging portion can be increased. As another embodiment, the engaging member may be a sector shape instead of a circle, and the handle-side engaged portion may have an end-shaped arc wall instead of the endless handle-side cylindrical wall. The rod-side engaged portion may have an ended arc wall instead of the endless cylindrical wall.

  As a further preferred embodiment of the present invention, a relatively small-diameter push rod-side cylindrical wall is received by a relatively large-diameter handle-side cylindrical wall, and the outer diameter of the end of the push rod is smaller than that of the push rod-side cylindrical wall. An outer wall surrounding the push rod-side cylindrical wall is provided on the side, the handle-side cylindrical wall and the outer wall are arranged so as to abut each other in the axial direction, between the outer peripheral surface of the push rod-side cylindrical wall and the inner peripheral surface of the outer wall, and A cable receiving space extending in the circumferential direction is defined between the outer peripheral surface of the push rod-side cylindrical wall and the inner peripheral surface of the handle-side cylindrical wall, and the handle member has a pipe shape. A handle communication hole communicating between the inside of the pipe of the handle member and the cable receiving space is provided, and the push rod has a pipe shape, and a push rod communication hole for communicating the inside of the push rod with the cable receiving space is provided on the outer wall. , Push The rod contact hole and the cable receiving section and the handle contact hole, the cable extending from the pipe interior of the push rod to the pipe inside of the handle member is passed. According to this embodiment, the diameter of the push rod-side engaged portion having a small diameter and the engagement member can be secured while ensuring a sufficiently large diameter at the engagement portion between the handle-side engaged portion and the engaging member. The cable can be routed on the outer diameter side of the engagement portion, and the cable can be passed inside the handle angle adjustment mechanism. As another embodiment of the present invention, a cable may be wired on the outer diameter side of the engagement portion between the handle-side engaged portion having a large diameter and the engagement member. Alternatively, as another embodiment of the present invention, a cable may not pass through the inside of the handle angle adjustment mechanism.

  As one embodiment of the present invention, the diameter of the outer peripheral surface of the outer wall is formed to be the same as the diameter of the outer peripheral surface of the handle-side cylindrical wall. According to this embodiment, the handle angle adjusting mechanism has a cylindrical shape, so that the handle angle adjusting mechanism looks good and is clean. As another embodiment, a flange is provided on the outer wall or the handle-side cylindrical wall, or the thickness of the outer wall and the thickness of the handle-side cylindrical wall are made different from each other, so that the outer peripheral surface has a diameter dimension and an outer circumferential surface of the handle-side cylindrical wall. May have different diameters.

  As one embodiment of the present invention, the push rod side engaged portion has an uneven shape formed so as to repeat a large diameter and a small diameter over the entire circumference of the inner peripheral surface of the push rod side cylindrical wall. An uneven shape corresponding to the push rod side engaged portion is formed on the small diameter outer peripheral surface so as to repeat the large diameter and the small diameter over the entire circumference, and the uneven shape of the engaging member is set at the handle angle locked position at the push rod side engaged position. It engages with the concave and convex shape of the mating portion, and separates from the concave and convex shape of the push rod side engaged portion at the handle angle free position. According to this embodiment, as an example, the engaging member can be engaged over the entire circumference of the pushed rod side engaged portion around the axis, and the engaging force at the engaging portion can be increased.

  As one embodiment of the present invention, the uneven portion of the handle-side engaged portion is formed so as to repeat a large diameter and a small diameter over the entire circumference of the inner peripheral surface of the handle-side cylindrical wall, and a plurality of convex portions of the engaging member. Are formed at intervals in the circumferential direction over the entire circumference of the large-diameter outer peripheral surface. According to such an embodiment, as an example, the engaging member can be engaged over the entire circumference of the handle-side engaged portion around the axis, and the engaging force at the engaging portion can be increased.

  As described above, according to the present invention, rattling of the handle member can be reduced as compared with the related art. Therefore, the rigidity of the entire push rod is increased, and the operability when pushing the handle member to move the stroller forward or backward is improved.

It is a perspective view which shows the frame structure of a baby carriage. It is a side view which shows the frame structure of a baby carriage. It is a typical side view which shows the handle | steering-wheel angle adjustment mechanism of this invention. It is a side view which shows the push rod and handle member which become one Embodiment of this invention. 1 is an exploded perspective view showing a handle angle adjusting mechanism according to an embodiment of the present invention. It is a figure showing a handle side engaged part of a handle angle adjustment mechanism. It is a longitudinal cross-sectional view showing a handle side engaged portion of the handle angle adjustment mechanism. It is a figure showing an engaging member of a handle angle adjustment mechanism. It is a figure showing an engaging member of a handle angle adjustment mechanism. It is a figure showing an engaging member of a handle angle adjustment mechanism. It is a figure which shows the push rod side engaged part of a handle | steering-wheel angle adjustment mechanism. It is a longitudinal cross-sectional view which shows the push rod side engaged part of a handle | steering-wheel angle adjustment mechanism. It is a longitudinal cross-sectional view which shows the state which a handle member is hold | maintained so that rotation is impossible. It is a longitudinal section showing the state where a handle member is made rotatable. It is an expanded sectional view which shows the engagement part of a push rod side engaged part and an engaging member. It is an expanded sectional view which shows the engagement part of a push rod side engaged part and an engaging member.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a baby carriage provided with a handle member connecting structure according to one embodiment of the present invention, and shows a vehicle body frame in which a baby seat, a hood, and the like are removed from the baby carriage. FIG. 2 is a side view corresponding to FIG. 1 and 2 show the left side of the baby carriage. First, a baby carriage will be described. A baby carriage 10 includes a pair of left and right front legs 11, a pair of left and right rear legs 12, a pair of left and right armrests 13, a pair of left and right armrest support members 14, a pair of right and left reversing brackets 15, It has a pair of front and rear members 16, a pair of right and left push rods 17, a handle member 18, a backrest member 19, and a plurality of left and right members 21, 22, 23, 24, 25. The ends of these members are connected to each other to form a body frame.

  The front leg 11 and the rear leg 12 extend in the vertical direction. A two-wheeled front wheel 27 is provided at the lower end of each front leg 11. At the lower end of each rear leg 12, a rear wheel 28 of two wheels is provided. The armrest 13 and the longitudinal member 16 extend in the longitudinal direction of the baby carriage 10. The pair of front-rear direction members 16 supports a seat portion of a baby seat (not shown). The pair of armrests 13 are disposed above the pair of front-back direction members 16 and define left and right side portions of the baby seat.

  The front end of each longitudinal member 16 and the center of each front leg 11 are rotatably connected. The upper end of each front leg 11, the upper end of each rear leg 12, and the front end of each armrest 13 are rotatably connected. The armrest support member 14 extends in the up-down direction. The rear end of each armrest 13 and the upper end of each armrest support member 14 are rotatably connected. The lower end of each armrest support member 14, one end of each reversing bracket 15, the lower end of each push rod 17, and the rear end of each longitudinal member 16 are rotatably connected. The other end of each reversing bracket 15 and the center of each rear leg 12 are rotatably connected.

  The pair of left and right members are connected to each other by left and right members 21 to 25 extending in the vehicle width direction of the baby carriage 10 as shown in FIG. Specifically, a left-right member 21 is provided between the pair of front legs 11, 11, and the left-right member 21 connects the pair of front legs 11, 11 to each other. Similarly, the left and right members 22, 23 and 24 connect the pair of front and rear members 16 to each other, and the left and right member 25 connects the pair of rear legs 12 and 12 to each other. The upper end of each push rod 17 is rotatably connected to both ends of a handle member 18 extending in the vehicle width direction of the baby carriage 10.

  The central region of the handle member 18 is a grip portion 18g extending in the vehicle width direction, and is gripped by both hands of the guardian. The handle portion 18g is preferably covered with a soft elastic material such as rubber. Thereby, not only the feel of the handle member 18 can be improved, but also the gripping force can be increased.

  The backrest member 19 is bent in an inverted U-shape to support a backrest of a baby seat (not shown). Both ends of the backrest member 19 are respectively connected to the rear ends of the front-back direction members 16.

  The armrest support member 14 and the reversing bracket 15 are locked so that they cannot rotate relative to each other by a developed state lock member 48 attached to the armrest support member 14, whereby the stroller 10 is held in the deployed state. On the other hand, when the rotation of the reversing bracket 15 is permitted by releasing the lock by the deployed state lock member 48, the above-described rotation connection portions of the body frame relatively rotate, and the stroller is brought into a folded state (not shown).

  The pair of push rods 17 and the handle member 18 are arranged so as to form an inverted U shape, are connected to each other, and are rotatable around the lower end of the push rod 17 in the front-rear direction of the baby carriage 10. As a result, the push rod 17 and the handle member 18 are switched between a rear-side push position just above the rear wheel 28 and a facing push position (not shown) just above the front wheel 27 as shown in FIGS. It is possible. Each push rod 17 extends in parallel along each armrest support member 14 at the back pushing position. Alternatively, as a modified example (not shown), instead of the push rod 17 being rotatably connected to the armrest support member 14, the upper end of the armrest support member 14 may be further extended upward, and the extended portion may be a push rod. . In such a modification, the armrest support member and the push rod extend continuously and are integrally formed.

  The handle member 18 is set to a handle angle which is straight from the push rod 17 at a neutral position shown by a solid line in FIG. In addition, the handle member 18 can rotate about the connection point with the push rod 17 in the deployed state of the baby carriage 10 as shown by the phantom line. The pivot connection between each push rod 17 and the handle member 18 has a common axis O. This axis O extends in the vehicle width direction. As described above, the handle member 18 can be tilted forward or backward relative to the push rod 17, and the handle angle of the handle member 18 can be adjusted. The handle angle is adjusted to an angle desired by the guardian by a handle angle adjusting mechanism 31 provided at a connection point between the end of the handle member 18 and each push rod 17. Further, the handle member 18 is held at the adjusted angle by the handle angle adjusting mechanism 31.

  FIG. 3 is a schematic side view showing the steering wheel angle adjusting mechanism 31, and shows a state in which the baby carriage is viewed in the vehicle width direction. The outline of the handle member connecting structure of the present invention will be described. The end of the handle member 18 is connected to the upper end of the push rod 17 so as to be rotatable around the axis O. A handle angle adjustment mechanism 31 provided at a connection point between the push bar 17 and the handle member 18 includes an engagement member 32 disposed along an axis O serving as a rotation center of the handle member 18 and an upper end of the push bar 17. A push rod side engaged portion 33 provided and engageable with the engaging member 32 so as to be relatively non-rotatable; and a handle side provided on the handle member 18 and engageable with the engaging member 32 so as to be relatively non-rotatable. And an engaged portion 34.

  The engaging member 32 is formed such that one end 32m in the direction of the axis O becomes thinner and the other end 32n in the direction of the axis O becomes thicker. A plurality of convex portions 32p, 32p,... Repeated in the circumferential direction around the axis O are formed at the other end 32n of the thicker side. Each projection 32p protrudes in the outer diameter direction. The concave portions 32q are formed between the adjacent convex portions 32p.

  One end 32m of the thinner side of the engaging member 32 is formed, for example, in a polygonal shape, and is slidably passed through the push rod side engaged portion 33. In the schematic embodiment shown in FIG. 3, one end 32 m has, for example, a rectangular cross section, and the push rod-side engaged portion 33 is, for example, a square hole. Engage relative rotation impossible. Further, the engaging member 32 is slidable in the direction of the axis O to be able to retreat from the push rod side engaged portion 33 of the square hole.

  The handle side engaged portion 34 has a convex portion 34p. The protruding portion 34p protrudes in a direction approaching the axis O in a protruding manner in comparison with both circumferential portions of the protruding portion 34p. As described above, the handle-side engaged portion 34 is constituted by the uneven portion. The protrusion 34p has a shape corresponding to the recess 32q at the other end 32n, and engages with any one of the plurality of recesses 32q. That is, the engaging member 32 can be engaged with the handle-side engaged portion 34 so as not to rotate relatively. In addition, the engagement member 32 can be disengaged from the handle-side engaged portion 34 by sliding in the direction of the axis O.

  The engagement portion between the engagement member 32 and the push rod side engaged portion 33, that is, the outer edge of the square shape and the inner wall surface of the square hole are arranged at positions relatively close to the axis O. In contrast to the push rod-side engaged portion 33, the engagement portion between the engaging member 32 and the handle-side engaged portion 34, that is, the convex portion 32p, the concave portion 32q, and the convex portion 34p are relatively positioned from the axis O. It is located at a far position.

  The engagement member 32 can be displaced in the direction of the axis O between the handle angle lock position and the handle angle free position. The engaging member 32 engages with both the push rod side engaged portion 33 and the handle side engaged portion 34 at the handle angle locked position. Thus, the rotation angle of the handle-side engaged portion 34 about the axis O is held non-rotatably with respect to the push rod-side engaged portion 33. That is, the handle member 18 is held at a predetermined handle angle.

  Conversely, the engaging member 32 is disengaged from the concave portion 32q of the engaging member 32 and the convex portion 34p of the handle-side engaged portion 34 at the handle angle free position, or one end 32m of the engaging member 32 ( The square pillar) retreats from the push rod side engaged portion 33 (square hole). This allows the handle-side engaged portion 34 to rotate around the axis O. That is, the handle member 18 is adjusted to the handle angle desired by the guardian, as indicated by the arrow in FIG. Adjustment of the steering wheel angle uses the pitch angle between the adjacent concave portions 32q, 32q as the minimum unit. Also, the adjustment range of the steering wheel angle can be set to approximately 180 ° by tilting forward from the neutral position to a maximum of approximately 90 ° or tilting backward from the neutral position to a maximum of approximately 90 ° as shown by a virtual line in FIG. The angle can be adjusted within the range. Alternatively, as a modified example (not shown), the angle may be adjustable in a range of approximately 300 °. Alternatively, as another modified example (not shown), the angle may be adjustable in a range of approximately 60 °. In any case, the adjustment range of the steering wheel angle can be set as appropriate.

  FIG. 4 is a side view showing a push rod and a handle member according to an embodiment of the present invention, and corresponds to FIG. The pair of push rods 17, 17 and the handle member 18 connecting them are in the form of pipes, and a pair of cables 46 are passed through these pipes. The cable 46 has flexibility and is made of, for example, a metal stranded wire. The upper end of each cable 46 is connected to an operation element 45 (FIG. 1) provided at the center of the handle member 18. The lower end of each cable 46 is connected to a sliding member 47 slidably mounted along each push rod 17.

  The sliding member 47 is attached to the side close to the armrest support member 14 and engages with a developed lock member 48 slidably mounted along the armrest support member 14 as shown in FIG. The unfolded state lock member 48 abuts on the reversing bracket 15 when the stroller 10 is unfolded, and holds the rotation angle between the armrest support member 14 and the reversing bracket 15 in an unchangeable manner.

  When the guardian pushes the operating element 45, the sliding member 47 is pulled up by the cable 46, and the deployed state locking member 48 is also pulled up together with the sliding member 47. The deployed state locking member 48 is separated from the reversing bracket 15 and 15 is allowed to rotate with respect to the armrest support member 14. Therefore, the baby carriage 10 can be folded while the guardian pushes the operation element 45.

  Next, a handle member connecting structure according to an embodiment of the present invention will be described in detail.

  FIG. 5 is an exploded perspective view showing the handle angle adjusting mechanism 31. As described above, the handle angle adjusting mechanism 31 includes the engaging member 32, the push rod side engaged portion 33, the handle side engaged portion 34, the operation button 41, the pin 42, and the spring 43. Then, these members are assembled coaxially along the axis O. The push rod side engaged portion 33 is integrally formed with a tubular push rod connecting portion 35. The upper end of the pipe of the push rod 17 extending upward beyond the armrest 13 is inserted into and fixed to the push rod connecting portion 35. Similarly, a tubular handle connecting portion 36 is integrally formed with the handle side engaged portion 34. The pipe end of the handle member 18 is inserted and fixed to the handle connection portion 36. As shown in FIG. 1, the handle member 18 has a central region extending in the vehicle width direction, and both end portions thereof further change their directions at substantially 90 ° from the central region. Therefore, both ends of the handle member 18 are connected to the push rod 17 so as to be continuous.

  FIG. 6 is a view showing the handle-side engaged portion 34 of the handle angle adjusting mechanism 31 and shows a state viewed in the direction of the axis O. FIG. 7 is a longitudinal sectional view showing the handle-side engaged portion 34 of the handle angle adjusting mechanism 31, and shows a section cut along a plane including the axis O. At the end of the handle connection portion 36, a step 36c formed into a concave curved surface, a disk-shaped handle-side base portion 38, and a cylindrical handle-side cylindrical wall 40 are integrally formed. The handle-side base 38 and the handle-side cylindrical wall 40 are centered on the axis O. The step 36c is arranged on the outer diameter side of the handle side cylindrical wall 40. The step 36c, the disk-shaped handle-side base portion 38, and the cylindrical handle-side cylindrical wall 40 are arranged in this order from one side in the direction of the axis O to the other side. The handle-side cylindrical wall 40 is erected on one side of the handle-side base 38 in the direction of the axis O. The annular end surface 40c on one side in the axis O direction of the handle-side cylindrical wall 40 is recessed from the side of the handle connection portion 36 to the other side in the axis O direction. The annular end face 40c is formed into a concave and convex shape to be fitted with a mating member described later. The handle-side base portion 38 is disposed on the other side of the handle-side cylindrical wall 40 in the direction of the axis O, and swells from the side of the handle connection portion 36. The handle connection 36 extends away from the axis O. That is, the handle-side cylindrical wall 40 is offset from the handle connection portion 36 toward the other side in the axis O direction.

  The handle side cylindrical wall 40 is erected on the handle side base 38. For this reason, the end opening of the handle side cylindrical wall 40 is covered by the handle side base 38. The handle-side base portion 38 and the handle-side cylindrical wall 40 define a large-diameter chamber 34s for receiving the engagement member 32. The handle-side cylindrical wall 40 is provided with a handle communication hole 40h. The handle communication hole 40h communicates the inside of the cylindrical handle connection portion 36 with the large diameter chamber 34s. The inside of the handle connection portion 36 communicates with the inside of the pipe-shaped handle member 18.

  A center hole 38h through which the end of the pin 42 penetrates is formed in the center of the handle side base 38. On the inner peripheral surface of the handle-side cylindrical wall 40, convex portions 34p are formed at regular intervals in the circumferential direction at a pitch of 30 °. That is, the convex portions 34p and the concave portions 34q are repeatedly formed in the circumferential direction. The protruding portion 34p protrudes toward the axis O, and has the appearance of an internal gear as shown in FIG. The projection 34p is connected to the handle-side base 38. In this way, the handle-side cylindrical wall 40 is formed with a concave-convex shape that becomes the handle-side engaged portion 34 so as to repeat a large diameter and a small diameter over the entire circumference.

  8 to 10 are views showing the engaging member 32, FIG. 8 shows a state viewed from one side in the direction of the axis O, FIG. 9 shows a state viewed in a direction perpendicular to the axis O, and FIG. This represents a state viewed from the other side in the O direction. One end 32m of the engaging member 32 in the direction of the axis O is formed to have a relatively small diameter (hereinafter, referred to as a small-diameter outer peripheral portion 32m). The other end 32n in the direction of the axis O of the engagement member 32 is formed to have a relatively large diameter (hereinafter, referred to as a large-diameter outer peripheral portion 32n), and is received in the above-described large-diameter chamber 34s. The small-diameter outer peripheral portion 32m and the large-diameter outer peripheral portion 32n each have the appearance of an external gear and are coaxially coupled. As described above, in the small-diameter outer peripheral portion 32m and the large-diameter outer peripheral portion 32n, the uneven shape formed by the convex portions 32t and 32u and the uneven shape formed by the convex portions 32p and 32q repeat the large diameter and the small diameter over the entire circumference. It is formed.

  In the large-diameter outer peripheral portion 32n, the intervals between the circumferentially adjacent convex portions 32p, 32p are the same as the above-described convex portions 34p, 34p. In the small-diameter outer peripheral portion 32m, the intervals between the circumferentially adjacent convex portions 32t, 32t are set to be the same as the later-described convex portions 33p, 33p. As shown in FIG. 8, the projections 32p, 32p... And the projections 32t, 32t.

  At the center of the engagement member 32, a center hole 32h through which the center of the pin 42 passes is formed. A circumferential groove 32r surrounding the center hole 32h is formed on the other end surface of the engaging member 32 in the direction of the axis O. The circumferential groove 32r receives the spring 43 that expands and contracts in the direction of the axis O.

  The engagement portion between the engagement member 32 and the handle-side engaged portion 34 is provided on the large-diameter outer peripheral portion 32n and the inner peripheral surface of the handle-side cylindrical wall 40. That is, the large-diameter outer peripheral portion 32n has an external gear shape (FIG. 8) projecting in the direction of the axis O, and is coaxially fitted into the handle-side engaged portion 34 of the internal gear shape (FIG. 6). Are engaged so that they cannot rotate relative to each other.

  FIG. 11 is a diagram illustrating the push rod-side engaged portion 33 of the handlebar angle adjusting mechanism 31 and shows a state viewed in the direction of the axis O. FIG. 12 is a vertical cross-sectional view showing the push rod-side engaged portion 33 of the handlebar angle adjusting mechanism 31 and shows a cross section cut along a plane including the axis O. At the end of the push rod connecting portion 35, a step 35c formed into a concave curved surface, a disc-shaped push rod side base 37, a cylindrical push rod side cylindrical wall 39, and a cylindrical outer wall 49 are integrally formed. It is formed. The push rod side base 37, the push rod side cylindrical wall 39, and the outer wall 49 are centered on the axis O. The push rod-side cylindrical wall 39 and the outer wall 49 project from the push rod-side base 37 to the other side in the axis O direction. The step 35c is arranged on the outer diameter side of the push rod side cylindrical wall 39. The annular end surface 39c on the other side of the push rod-side cylindrical wall 39 in the direction of the axis O is recessed from the side of the push rod connecting portion 35 to one side in the direction of the axis O. The push rod side base 37 is disposed on one side of the push rod side cylindrical wall 39 in the direction of the axis O, and is depressed from the one side of the push rod connecting portion 35 on the one side in the axis O direction to the other side in the axis O direction. The push rod connecting portion 35 extends away from the axis O.

  The push rod side cylindrical wall 39 is erected on the push rod side base 37. For this reason, the end opening of the push rod side cylindrical wall 39 is covered with the push rod side base 37. The push rod-side base 37 and the push rod-side cylindrical wall 39 define a small-diameter chamber 33s for receiving a small-diameter outer peripheral portion 32m (FIG. 8) of the engaging member 32. A center hole 37h through which the pin 42 penetrates and a through hole 37i through which the leg 41g of the operation button 41 penetrates are formed at the center of the push rod side base 37. As shown in FIG. 5, the operation button 41 has a circular button body 41b and a plurality of legs 41g projecting from the button body 41b in the other direction of the axis O.

  Returning to FIG. 11, the protrusions 33p are formed at equal intervals in the circumferential direction at a 30 ° pitch on the inner peripheral surface of the push rod-side cylindrical wall 39. That is, the convex portion 33p and the concave portion 33q are repeatedly formed in the circumferential direction. The protruding portion 33p protrudes toward the axis O, and has the appearance of an internal gear as shown in FIG. The projection 33p is connected to the push rod side base 37. In this way, the push rod side cylindrical wall 39 is formed with a concave and convex shape which becomes the push rod side engaged portion 33 so as to repeat a large diameter and a small diameter over the entire circumference.

  The outer wall 49 is erected on the push rod side base 37 on the outer diameter side of the push rod side cylindrical wall 39, protrudes in the other direction of the axis O, and surrounds the push rod side cylindrical wall 39. The outer wall 49, the push rod side base 37, and the push rod side cylindrical wall 39 define an annular cable receiving space 51 extending in the circumferential direction. An annular end face 49c on the other side of the outer wall 49 in the direction of the axis O is formed into a concave and convex shape to be fitted with a mating member described later. The outer wall 49 is provided with a push rod communication hole 49h. The push rod communication hole 49h communicates the cable receiving space 51 with the inside of the cylindrical push rod connection portion 35. The inside of the push rod connecting portion 35 communicates with the inside of the pipe-like push rod 17.

  The engagement portion between the engaging member 32 and the push rod side engaged portion 33 is provided on the small diameter outer peripheral portion 32 m and the inner peripheral surface of the push rod side cylindrical wall 39. That is, the small-diameter outer peripheral portion 32m protruding in the direction of the axis O has an external gear shape (FIG. 8) and is coaxially fitted into the push rod side engaged portion 33 of the internal gear shape (FIG. 11). Are engaged so that they cannot rotate relative to each other. Therefore, the push rod 17 and the handle member 18 are held via the engagement member 32 so as not to rotate relative to each other.

  As shown in FIG. 12, a cylindrical peripheral wall 44 is further erected on the push rod side base 37. The peripheral wall 44 projects to the opposite side from the push rod-side cylindrical wall 39 when viewed from the push rod-side base 37, and surrounds the axis O. The button body 41 b of the operation button 41 is surrounded by the peripheral wall 44. As shown in FIG. 5, when viewed from the engagement member 32, the push rod-side engaged portion 33 is arranged on one side in the axis O direction, and the handle-side engaged portion 34 is arranged on the other side in the axis line O direction. The operation button 41 is arranged on one side of the push rod side engaged portion 33 in the direction of the axis O, and is received in the peripheral wall 44. A spring 43 is contracted between the engagement member 32 and the handle side base 38. The spring 43 urges the engagement member 32 in one direction in the axis O, that is, toward the push rod-side engaged portion 33.

  As shown in FIG. 5, the pin 42 is inserted into the push rod-side engaged portion 33 from one side in the axis O direction, with the head part in one direction in the axis O and the axis part in the other direction in the axis O, as shown in FIG. , A center hole 32h of the engagement member 32, and a center hole 38h of the handle side base 38. The distal end of the shaft of the pin 42 is processed to have a larger diameter than the center hole 38h. As a result, the push rod-side engaged portion 33 and the handle-side engaged portion 34 are relatively rotatably and inseparably connected.

  A circular operation button 41 is placed on the head of the pin 42 from one side in the direction of the axis O. In FIG. 5, one side in the direction of the axis O (left side in the drawing) is outside the baby carriage 10 in the vehicle width direction, and the other side in the direction of the axis O (right side in the drawing) is inside the baby carriage 10 in the vehicle width direction. Therefore, the operation button 41 is exposed outward in the vehicle width direction.

  13 and 14 are longitudinal sectional views showing the assembled handle angle adjusting mechanism 31. The step 36c of the handle connecting portion 36 faces the outer peripheral surface of the peripheral wall 44, and the step 35c of the push rod connecting portion 35 faces the outer peripheral surface of the handle side cylindrical wall 40. The push rod side base 37 is provided on one side in the axial direction, and the handle side base 38 is provided on the other side in the axial direction. Then, the end of the handle member 18, the handle connection portion 36, the push bar connection portion 35, and the push bar 17 are aligned in one row.

  With the handle angle adjustment mechanism 31 assembled, the push rod-side cylindrical wall 39 having a relatively small diameter is received by the handle-side cylindrical wall 40 having a relatively large diameter. The portion between the outer peripheral surface of the push rod side cylindrical wall 39 and the inner peripheral surface of the outer wall 49 and the outer peripheral surface of the push rod side cylindrical wall 39 and the inner peripheral surface of the handle side cylindrical wall 40 are elongated in the circumferential direction. An extended cable receiving space 51 is defined. The outer wall 49 is arranged on one side in the direction of the axis O, the handle-side cylindrical wall 40 is arranged on the other side in the direction of the axis O, and these annular end faces 40c, 49c abut in the direction of the axis. The annular end surfaces 40c and 49c are formed in a spigot and fitted to each other, so that the outer peripheral surface of the handle-side cylindrical wall 40 and the outer peripheral surface of the outer wall 49 having the same diameter are continuous. However, the fitting of the annular end faces 40c and 49c allows the relative rotation between the handle-side cylindrical wall 40 and the outer wall 49 instead of press-fitting.

  The inside of the push rod connecting portion 35, the push rod communication hole 49h, the cable receiving space 51, the handle communication hole 40h, and the inside of the handle connection portion 36 extend from inside the pipe of the push rod 17 to inside the pipe of the handle member 18. The cable 46 is passed. Since the cable 46 has flexibility, the rotation of the handle member 18 about the axis O is not hindered.

  In the normal state shown in FIG. 13, the engagement member 32 is urged in one direction along the axis O by the spring 43 to be in the handle angle lock position. At the handle angle lock position, the small-diameter outer peripheral portion 32m of the engaging member 32 is received in the small-diameter chamber 33s of the push rod-side engaged portion 33 and engages with the push rod-side engaged portion 33 in a non-rotatable manner. In the handle angle locked position, the large-diameter outer peripheral portion 32n of the engagement member 32 is received in the large-diameter chamber 34s of the handle-side engaged portion 34 and engages the handle-side engaged portion 34 in a non-rotatable manner. . As described above, since the engagement member 32 engages with both the push rod side engaged portion 33 and the handle side engaged portion 34 at the handle angle locked position, the handle angle of the handle member 18 is fixed, and the handle member 18 is fixed. Are not allowed to rotate.

  On the other hand, when the guardian pushes the operation button 41 in the other direction of the axis O as shown in FIG. The engaging member 32 is pushed in the other direction of the axis O against the force, and is displaced to the handle angle free position. Then, the small-diameter outer peripheral portion 32m retreats from the small-diameter chamber 33s of the push rod-side engaged portion 33 and moves away from the push rod-side engaged portion 33. As described above, since the engagement member 32 is released from the engagement with the push rod side engaged portion 33 at the handle angle free position, the handle angle of the handle member 18 can be changed, and the handle member 18 rotates. Permissible.

  When the guardian releases his / her hand from the operation button 41 shown in FIG. 14, the operation button 41 and the engaging member 32 return to the original handle angle lock position shown in FIG.

  FIG. 15 illustrates the handle angle lock position of the engagement member 32, and is a view cut along a plane indicated by AA in FIG. 13 and an enlarged view of the cut surface. FIG. 16 shows the free position of the handle angle of the engagement member 32. FIG. 16 is a view cut along a plane indicated by BB in FIG. The convex portion 32t repeatedly formed along the outer circumference of the small-diameter outer peripheral portion 32m and the convex portion 33p repeatedly formed along the inner peripheral surface of the push rod-side cylindrical wall 39 (FIG. 12) are directed toward the axis O. It is formed in a tapered shape. 15 and 16, the taper angles are exaggerated for easy understanding of the present invention.

  As shown in FIG. 16, the plurality of protrusions 33p and the plurality of recesses 32u face each other in the direction of the axis O when the engaging member 32 is at the handle angle free position. The convex portion 33p is formed in a tapered shape so as to taper in the direction of the axis O toward the other side. The convex portion 32t that defines the concave portion 32u is also formed in a tapered shape so as to taper in the direction of the axis O toward the other side (the concave portion 33q). As shown in FIG. 15, the plurality of protrusions 33p and the plurality of recesses 32u engage with each other when the engagement member 32 is set at the handle angle lock position. By the action of the taper, the convex portion 32t fits between the adjacent convex portions 33p, 33p, that is, the concave portion 32u, and can close the circumferential gap between the convex portions 33p, 32t.

  In the present embodiment, the taper angle of the protrusion 33p and the taper angle of the protrusion 32t are the same. As another embodiment (not shown), one of the protrusions 33p and 32t may be formed in a tapered shape. Alternatively, the two taper angles may be different.

  According to the present invention, the engagement portion between the engagement member 32 and the push rod side engaged portion 33 is located at a position relatively close to the axis O, as shown in FIGS. 3, 13, and 14. The engagement portion between the engagement member 32 and the handle-side engaged portion 34 is arranged at a position relatively far from the axis O. According to the present invention, since the engagement portion between the engagement member 32 and the handle-side engaged portion 34 is far from the axis O, the engagement location between the engagement member 32 and the handle-side engaged portion 34 is reduced. In comparison with the conventional technique close to the axis O, it is possible to make it difficult for the rattle in the circumferential direction generated at the engagement portion between the engagement member 32 and the handle-side engaged portion 34 to be transmitted to the handle member 18.

  According to the embodiment shown in FIG. 16, the engaging member 32 is opposed to the push rod side engaged portion 33 in the handle angle free position in the axial direction from the push rod side engaged portion 33, and the engaging member 32 and the push rod side engaged member 33 are opposed to each other. Both of the joint portions 33 are formed in a tapered shape so as to taper in the axial direction toward the other side. Specifically, the convex portion 33p of the push rod-side engaged portion 33 disposed on one side in the axis O direction is formed into a tapered shape toward the other side in the axis O direction. Further, the projection 32t of the engaging member 32 disposed on the other side in the axis O direction is formed in a tapered shape tapering toward one side in the axis O direction. With such a taper, the circumferential gap between the push rod side engaged portion 33 and the engaging member 32 can be reduced. In the grip portion 18g (FIG. 1) of the handle member 18, rattling around the axis O can be reduced.

  The handle angle adjusting mechanism 31 shown in FIGS. 5 to 14 includes a handle-side base 38 provided on the handle member 18, a handle-side cylindrical wall 40 erected on the handle-side base 38 about the axis O, and a push rod. 17, further comprising a push rod-side base 37 provided at the upper end of the push rod 17 and a push rod-side cylindrical wall 39 erected on the push rod-side base 37 about the axis O and having a smaller diameter than the handle-side cylindrical wall 40; The engagement member 32 further has a large-diameter outer peripheral portion 32n received by the handle-side cylindrical wall 40 and a small-diameter outer peripheral portion 32m received by the push rod-side cylindrical wall 39. The engaging portion with the portion 34 is provided on the large-diameter outer peripheral portion 32n and the inner peripheral surface of the handle-side cylindrical wall 40, and the engaging portion between the engaging member 32 and the push rod-side engaged portion 33 is formed on the small-diameter outer peripheral portion. 32m and push rod side circle Provided on the inner peripheral surface of the wall 39. Thereby, the engaging member can be engaged over the entire circumference of the engaged portion around the axis O, and the engaging force at the engaging portion can be increased.

  As shown in FIGS. 5 to 14, the handle side base 38 is provided on one side in the axis O direction, the push rod side base 37 is provided on the other side in the axis O direction, and a relatively small diameter push rod side cylindrical wall 39 is provided. An outer wall 49 that is received by the handle-side cylindrical wall 40 having a relatively large diameter and that surrounds the push-rod-side cylindrical wall 39 is provided on the outer diameter side of the push-rod-side cylindrical wall 39, and the handle-side cylindrical wall 40 and the outer wall 49 are provided. Are arranged in abutment in the direction of the axis O, between the outer peripheral surface of the push rod side cylindrical wall 39 and the inner peripheral surface of the outer wall 49, and between the outer peripheral surface of the push rod side cylindrical wall 39 and the inner peripheral surface of the handle side cylindrical wall 40. A cable receiving space 51 extending in the circumferential direction is defined between the first and second surfaces, and the handle member 18 has a pipe shape, and the inside of the pipe of the handle member 18 and the cable receiving space 51 communicate with the handle-side cylindrical wall 40. Hand A communication hole 40h is provided, and the push rod 17 is in the shape of a pipe. The outer wall 49 is provided with a push rod communication hole 49h that connects the inside of the pipe of the push rod 17 to the cable receiving space 51. The cable 46 extending from inside the pipe of the push rod 17 to inside the pipe of the handle member 18 is passed through the cable receiving space 51 and the handle communication hole 40h. Thereby, the diameter of the push rod side engaged portion 33 and the engaging member 32 having a small diameter can be secured while ensuring a sufficiently large diameter at the engagement portion between the handle side engaged portion 34 and the engaging member 32. The cable 46 can be routed on the outer diameter side of the engagement portion, and the cable 46 can be passed inside the handle angle adjustment mechanism 31.

  As shown in FIGS. 5 to 14, the outer wall 49 has an outer peripheral surface having the same diameter as the outer peripheral surface of the handle-side cylindrical wall 40. Therefore, the entire handle angle adjusting mechanism 31 has a cylindrical shape. Become nice and clean.

  Further, as shown in FIGS. 5 to 14, the push rod-side engaged portion 33 has a convex portion 33 p formed to repeat a large diameter and a small diameter over the entire circumference of the inner peripheral surface of the push rod-side cylindrical wall 39. The concave portion 33q has a concave-convex shape, and a convex portion 32t and a concave portion 32u are formed on the small-diameter outer peripheral portion 32m of the engaging member 32 as a concave-convex shape corresponding to the push rod side engaged portion 33. The concave and convex shape of the engaging member 32 is engaged with the concave and convex shape of the push rod side engaged portion 33 at the handle angle locked position as shown in FIG. At the angle free position, the push rod side engaged part 33 is separated from the uneven shape. Thereby, the engaging member can be engaged over the entire circumference of the pushed rod-side engaged portion around the axis O, and the engaging force at the engaging portion can be increased.

  As shown in FIGS. 5 to 14, the uneven portion of the handle-side engaged portion 34 is formed so as to repeat a large diameter and a small diameter over the entire circumference of the inner peripheral surface of the handle-side cylindrical wall 40, and a plurality of convex portions are formed. The plurality of protrusions 32p of the engagement member 32 including the portion 34p are formed at intervals in the circumferential direction over the entire circumference of the large-diameter outer peripheral portion 32n. Thereby, the engaging member 32 can be engaged over the entire circumference of the handle-side engaged portion 34 around the axis O, and the engaging force at the engaging portion can be increased.

  The embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range as the present invention or within an equivalent range.

  The baby carriage according to the present invention is advantageously used in a childcare device.

10 baby carriages, 11 front legs, 12 rear legs,
13 armrests, 14 armrest support members,
15 reversing bracket, 16 front and rear direction member, 18 handle member,
18g handle part, 31 handle angle adjustment mechanism, 32 engagement member,
32m small diameter outer peripheral portion at one end in the axial direction, 32p, 32t convex portion,
32n Large-diameter outer peripheral portion at the other end in the axial direction, 32q, 32u concave portion,
33s small diameter chamber, 33 push rod side engaged part, 33p convex part,
33q concave part, 34 handle side engaged part, 34p convex part,
34q recess, 34s large diameter chamber, 35 push rod connection,
36 handle connection part, 35c, 36c step,
37 push rod side base, 37i through hole, 38 handle side base,
39 push rod side cylindrical wall, 39c annular end face, 40 handle side cylindrical wall,
40h handle connection hole, 40c annular end face, 41 operation button,
41g leg, 43 spring, 44 peripheral wall, 45 operator,
46 cable, 47 sliding member, 48 deployment state locking member,
49 outer wall, 49c annular end face, 49h push rod communication hole,
50 Axis, 51 Cable receiving space, O axis.

Claims (8)

A push rod included in the body frame of the stroller,
A handle member rotatably connected to an end of the push rod;
A handle angle adjustment mechanism provided at a connection point between the push rod and the handle member to adjust a rotation angle of the handle member;
The handle angle adjustment mechanism,
An engagement member disposed along an axis serving as a rotation center of the handle member,
A push rod-side engaged portion provided at an end of the push rod and capable of engaging with the engaging member so as to be relatively non-rotatable;
A handle-side engaged portion provided on the handle member and engageable with the engaging member so as to be relatively non-rotatable;
The push rod-side engaged portion and / or the handle-side engaged portion and an engaging portion with the engaging member are provided on one of the engaged portion and the engaging member. A plurality of protrusions that are repeated in the circumferential direction around the axis, and a protrusion and recess provided on the other side and engaged with any of the plurality of protrusions,
One of an engagement portion between the engagement member and the push rod-side engaged portion and an engagement portion between the engagement member and the handle-side engaged portion is relatively to the axis. The other is disposed at a position relatively close to the axis,
The engaging member is displaced to engage with both the push rod-side engaged portion and the handle-side engaged portion, a handle angle lock position, and the handle-side engaged portion and the push rod. A handle member connecting structure for a stroller, wherein the handle member connecting structure is selectively set to at least one of a side engaged portion and a handle angle free position disengaged. The handle angle adjustment mechanism further includes a push rod-side base provided on the end side of the push rod, and a handle-side base provided on the handle member side.
The push rod side base is disposed on one side in the axial direction, the handle side base is disposed on the other side in the axial direction,
The engaging member is disposed between the push rod-side base and the handle-side base, and further includes a small-diameter outer peripheral portion disposed on one axial side and a large-diameter outer peripheral portion disposed on the other axial side. Have
An engagement portion between the pushed rod-side engaged portion and the engagement member is provided on the push rod-side base and the small-diameter outer peripheral portion,
The handle member coupling structure for a stroller according to claim 1, wherein an engagement portion between the handle-side engaged portion and the engagement member is provided on the handle-side base portion and the large-diameter outer peripheral portion. The engaging member faces the push rod-side engaged portion in the handle angle free position in the axial direction from the pushed rod-side engaged portion, and faces the push rod-side engaged portion at the handle angle locked position. It overlaps with the axial position of the joint part and engages with the pushed rod side engaged part,
The handle member connecting structure for a baby carriage according to claim 2, wherein at least one of the engaging member and the pushed rod-side engaged portion is formed in a tapered shape so as to taper in an axial direction toward a mating side. . The handle angle adjustment mechanism has a handle-side cylindrical wall that is erected on the handle-side base about the axis, and a diameter smaller than the handle-side cylindrical wall that is erected on the push rod-side base about the axis. Further having a push rod-side cylindrical wall of
The push rod-side cylindrical wall can receive the small-diameter outer peripheral portion of the engagement member, and the handle-side cylindrical wall can receive the large-diameter outer peripheral portion of the engagement member,
The push rod-side engaged portion is provided on an inner peripheral surface of the push rod-side cylindrical wall, and the handle-side engaged portion is provided on an inner peripheral surface of the handle-side cylindrical wall. A handle member connecting structure for the stroller according to the above. The push rod-side cylindrical wall having a relatively small diameter is received by the handle-side cylindrical wall having a relatively large diameter,
An outer wall surrounding the push rod-side cylindrical wall is provided on the outer diameter side of the push rod-side cylindrical wall among the ends of the push rod,
The handle-side cylindrical wall and the outer wall are arranged so as to abut each other in the axial direction,
Between the outer peripheral surface of the push rod-side cylindrical wall and the inner peripheral surface of the outer wall, and between the outer peripheral surface of the push rod-side cylindrical wall and the inner peripheral surface of the handle-side cylindrical wall, are elongated in the circumferential direction. An extended cable receiving space is defined,
The handle member is in the shape of a pipe, and the handle-side cylindrical wall is provided with a handle communication hole that communicates the inside of the pipe of the handle member with the cable receiving space,
The push rod is in the shape of a pipe, and the outer wall is provided with a push rod communication hole that communicates the inside of the pipe of the push rod with the cable receiving space,
The handle of the baby carriage according to claim 4, wherein a cable extending from inside the pipe of the push rod to inside the pipe of the handle member is passed through the push rod communication hole, the cable receiving section, and the handle communication hole. Member connection structure.   The handle member coupling structure for a baby carriage according to claim 5, wherein a diameter of an outer peripheral surface of the outer wall is formed to be the same as a diameter of an outer peripheral surface of the handle-side cylindrical wall. The push rod-side engaged portion has an uneven shape formed to repeat a large diameter and a small diameter over the entire circumference of the inner peripheral surface of the push rod-side cylindrical wall,
On the small-diameter outer peripheral surface of the engagement member, an uneven shape corresponding to the pressed rod-side engaged portion is formed so as to repeat a large diameter and a small diameter over the entire circumference,
The concave and convex shape of the engaging member engages with the concave and convex shape of the push rod side engaged portion at the handle angle lock position, and separates from the concave and convex shape of the push rod side engaged portion at the handle angle free position. A handle member connecting structure for a baby carriage according to any one of claims 4 to 6. The uneven portion of the handle-side engaged portion is formed so as to repeat a large diameter and a small diameter over the entire circumference of the inner peripheral surface of the handle-side cylindrical wall,
The handle member connection for a stroller according to any one of claims 4 to 7, wherein the plurality of protrusions of the engagement member are formed at intervals in a circumferential direction over the entire circumference of the large-diameter outer peripheral surface. Construction.

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