JP2015058816A - Handle device of infant seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle device of an infant seat which enables a longitudinal adjustment of a handle to be operated simply and saves the number of constituent members with no coil springs required, and which can be manufactured easily and inexpensively.SOLUTION: The outer periphery of a support shaft 28 is provided with a plurality of engaging parts circumferentially with intervals. A handle holding part 33 is provided with an engaging claw 35 to selectively engage with the plurality of engaging parts to fix the support shaft 28 unrotatably so that the handle 25 can make a longitudinal adjustment of movement by a change of the engaging parts 31 with which the engaging claw 35 engages with a turning position of the support shaft 28. A seat side wall 21 is provided with a lock member 41 to lock the engaging claw 35 in a state of engagement with the engaging parts so as to be movable between a lock position and an unlock position.

Description

  The present invention relates to a handle device for an infant seat whose handle can be moved back and forth.

The handle device for an infant seat is provided with a handle between the left and right seat side walls, and support shafts are provided at both left and right ends of the handle so that the handle can be moved back and forth by rotating around the support shaft. There is a seat side wall in which a handle support shaft is rotatably held around the support shaft so that the handle can be moved back and forth.
In this type of conventional infant seat handle apparatus, the handle is rotatable in the front-rear direction by inserting cylindrical support shafts at both ends of the handle into the pivot shaft fixed to the side wall of the seat. The angle change button is inserted into the inner side of the seat side wall in the rotating shaft, and when the handle is locked, the pin of the angle change button is engaged with a plurality of grooves in the cylindrical portion of the handle, and the pin is a coil spring. So that when the angle change button is pushed against the bias of the coil spring, the engagement between the pin and the groove is released and the support shaft of the handle can be rotated in the front-rear direction. (For example, patent document 1).

JP 2009-56878 A

  However, in the conventional case, when adjusting the handle back and forth, it is necessary to rotate the handle around the support shaft while pressing the left and right angle change buttons outward in the left and right direction against the bias of the coil spring. The operation of adjusting the back and forth was very troublesome. In addition to the rotating shaft and the angle change button, a coil spring is required, and since many components are required, it is necessary to assemble the coil spring during manufacturing, making the handle device cumbersome and expensive to manufacture. There was a problem of sticking.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an infant seat handle that can be easily adjusted in the longitudinal direction of the handle, can be easily manufactured at low cost, requires no coil springs, requires few components, and the like. The object is to provide a device.

Specific means for solving the problems in the present invention are as follows.
The technical means of the present invention for solving this technical problem is that the support shaft 28 is provided at both left and right ends of the handle 25 so that the handle 25 can be moved back and forth by rotating around the support shaft 28. A handle device for an infant seat in which a handle holding portion 33 is provided on the seat side wall 21 so as to hold the support shaft 28 of the handle 25 so as to be rotatable around the support shaft 28.
A plurality of locking portions 31 are provided on the outer periphery of the support shaft 28 at intervals in the circumferential direction, and selectively engaged with the plurality of locking portions 31 to fix the support shaft 28 to the handle holding portion 33 so as not to rotate. The engaging claw 35 to be joined is provided so that the locking portion 31 to which the engaging claw 35 engages is changed by the rotation position of the support shaft 28 so that the handle 25 can be adjusted to move back and forth.
A locking member 41 that locks the engaging claw 35 in a state of being engaged with the engaging portion 31 is provided on the seat side wall 21 so as to be movable between a locking position L and an unlocking position U.

According to another technical means of the present invention, the handle holding portion 33 is formed in a ring shape having an insertion hole 34 through which the support shaft 28 is inserted and held, and the locking portion 31 is formed on the outer periphery of the support shaft 28. A plurality of grooves are disposed in the outer periphery of the support shaft 28 at intervals in the circumferential direction.
The engaging claw 35 has an elastic piece 35 a that protrudes from the opening edge of the insertion hole 34 of the handle holding portion 33 along the outer periphery of the support shaft 28, and a protruding end of the elastic piece 35 a toward the locking portion 31. And the protruding protrusion 35b protrudes in the radially outward direction of the support shaft 28 by elastic deformation of the elastic piece 35a so that the engaging protrusion 35b is removed from the state where the engaging protrusion 35b is engaged with the locking portion 31. The point is that it can be retreated.

  According to another technical means of the present invention, the support shaft 28 is formed in a cylindrical shape having a cylindrical hole 29, and the lock member 41 is rotatably inserted and held in the cylindrical hole 29 of the support shaft 28. The lock member 48 has a lock piece 48 that covers the outer periphery of the engaging claw 35 on the outside of the support shaft portion 43, and the lock member 41 has a lock position where the lock piece 48 covers the outer periphery of the engagement claw 35. The point is that the support shaft 43 is rotatably supported around the support shaft portion 43 so as to move to L and the unlocking position U that is disengaged from the engaging claw 35.

Another technical means of the present invention is that a positioning mechanism 50 is provided between the handle holding portion 33 and the lock member 41 to position the lock member 41 at the lock position L and the unlock position U. It is in.
Another technical means of the present invention is that the adjustment of the movement of the handle 25 projects from the rear projecting position X1 projecting rearward from the support shaft 28 to the front projecting from the support shaft 28 through the upper side of the support shaft 28. A rotation restriction mechanism 57 that restricts the rotation range of the support shaft 28 is provided between the seat side wall 21 and the handle 25 so as to be in the range up to the protruding position X4.

According to the present invention, when moving the handle back and forth, after the lock member is moved from the lock position to the unlock position, the handle is rotated around the support shaft so that the handle becomes a desired front and back position. The lock member may be returned from the unlock position to the lock position, and the handle that has been adjusted to move back and forth is fixed to be unrotatable around the support shaft.
Accordingly, there is no need to perform the troublesome operation of rotating the handle while pressing the left and right angle change buttons as in the prior art, and the handle can be easily moved by sequentially moving the lock member and rotating the handle. Move and adjust back and forth. Further, the conventional coil spring is not required and the number of constituent members is small, and the work of incorporating the coil spring can be omitted, and the handle device for the infant seat can be manufactured easily and inexpensively.

It is the sectional view on the AA line of FIG. 3 which shows one Embodiment of this invention. It is a BB sectional view taken on the line of FIG. It is a side view of the handle holding part of the seat side wall seen from the outside. It is a side view of the handle | steering-wheel holding part of the seat side wall seen from the same inside. It is a front view of the handle | steering-wheel part of the infant seat. It is a front view of the one end part of the handle. It is a side view of the handle. It is the side view which looked at the lock member from the inside. It is a side view of the handle | steering-wheel holding part of the seat side wall seen from the outer side at the time of moving a handle back and forth. FIG. 4 is a side view of a handle holding portion showing a front / rear adjustment operation of the handle, where (a) shows the handle in the rearward projecting position and (b) shows the handle in the upper projecting position. FIG. 6 is a schematic side view of a handle holding portion showing another front-rear adjustment operation of the handle, where (c) shows that the handle is in the upward protruding position, and (d) shows that the handle is in the forward protruding position. It is a whole side view of the infant seat.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 12 show an embodiment of the present invention. In FIG. 12, a bicycle infant seat A includes a seat body 2 having a seat portion 1 and a backrest body 4 having a backrest portion 3, and a headrest 5 on the backrest portion 3 of the backrest body 4. The step 6 is provided on the seat body 2 so as to be swingable about the horizontal axis 7.

The infant seat A for bicycles, for example, is detachably attached to the handlebar 8 of the bicycle, and is configured so that an infant can be seated here and can also be used as a luggage. In step 6, the posture can be changed between a closed posture P in which the front of the seat portion 1 of the seat body 2 is closed from below and a foot placement posture Q in which a foot lowered when the legs are lowered can be placed.
The seat body 2, the backrest 4, the headrest 5, and the step 6 are each integrally formed of synthetic resin.

  The seat body 2 has a pair of left and right body side walls 11 in addition to the seat portion 1. The left and right body side walls 11 of the seat body 2 are disposed inside the left and right handlebars 8 of the bicycle, and are not shown in the drawings. It is fixed with fasteners such as. A foot opening is provided in front of the seat portion 1, and a partition wall 13 that protrudes forward from the central portion in the left-right direction of the seat portion 1 and separates the foot lower opening left and right is provided. A connecting wall plate 14 that connects the front ends of the left and right main body side walls 11 is provided, and the front end side of the partition wall 13 is connected to the central portion in the left-right direction of the connecting wall plate 14.

In addition to the backrest 3, the backrest 4 has a bottom wall 16 that protrudes forward from the lower end of the backrest 3 and a pair of left and right backrest sidewalls 17.
The left and right backrest side walls 17 of the backrest body 4 are arranged outside the left and right main body side walls 11 of the seat body 2, and the rear portions of the left and right main body side walls 11 of the seat body 2 and the left and right backrest side walls of the backrest body 4 are arranged. The front upper side of the left and right backrest side walls 17 is supported on the rear upper side of the main body side wall 11 so as to be swingable around a support shaft 20 in the left-right direction.

  The seat portion 1 of the seat body 2 is disposed on the bottom wall 16 of the backrest body 4, and the seat portion 1 of the seat body 2 and the bottom wall 16 of the backrest body 4 are in an arc shape with the support shaft 20 as a fulcrum. A backrest engagement that is superposed on the curved overlapping surfaces so as to be movable back and forth, and engages and holds the bottom wall 16 of the backrest body 4 with respect to the seat portion 1 of the seat body 2 so as to be movable back and forth around the support shaft 20. A mechanism is provided between the seat 1 and the bottom wall 16.

Thus, the upper side of the backrest 4 is supported so as to be swingable around the support shaft 20 in the left-right direction with respect to the seat body 2, and the infant seat for bicycles is composed of the left and right main body side walls 11 and the left and right backrest side walls 17. A pair of left and right seat side walls 21 of A is configured.
1 to 8, a handle 25 is provided between the left and right seat side walls 21 (main body side walls 11).

  The handle 25 is bent at both ends in the left-right direction in a direction perpendicular to the left-right direction, and a disc-shaped contact plate portion 27 that contacts an inner surface of a handle holding portion 33 described later is provided at the bent end portion. The support shaft 28 protrudes outward in the left-right direction at the center of each contact plate portion 27. Thus, the support shaft 28 is provided at an eccentric position with respect to the handle 25 so that the handle 25 can be moved back and forth by turning around the support shaft 28 at both left and right ends of the handle 25.

The support shaft 28 is formed in a cylindrical shape having a circular cylindrical hole 29, and a plurality of (six in the illustrated example) locking portions 31 are provided on the outer periphery of the support shaft 28 at equal intervals over the entire circumference in the circumferential direction. ing. The locking portions 31 are formed in a V-shaped groove shape on the outer periphery of the support shaft 28, and a plurality of the locking portions 31 are arranged at intervals on the outer periphery of the support shaft 28.
The left and right seat side walls 21 are provided with handle holding portions 33 that hold the support shaft 28 of the handle 25 so as to be rotatable around the support shaft 28. The handle holding portion 33 is formed integrally with the main body side wall 11 and is formed in a ring shape having an insertion hole 34 through which the support shaft 28 is inserted and held.

The handle holding portion 33 is provided with an engaging claw 35 that selectively engages the plurality of locking portions 31 to fix the support shaft 28 so as not to rotate. The engaging portion 31 that engages is changed so that the handle 25 can be adjusted to move back and forth.
The engaging claw 35 includes an elastic piece 35a protruding in an arc shape from the opening edge of the insertion hole 34 of the handle holding portion 33 along the outer periphery of the support shaft 28, and a locking portion from the protruding end of the elastic piece 35a. And a support shaft by elastic deformation of the elastic piece 35a so that the engagement protrusion 35b can be removed from the state where the engagement protrusion 35b is engaged with the locking portion 31. 28 can be moved in and out of the radial direction.

Specifically, a pair of front and rear engaging claws 35 are provided on the handle holding portion 33, and an arcuate upper support portion 37 and an arcuate shape are formed on the upper and lower portions of the opening edge of the insertion hole 34 of the handle holding portion 33. The lower support portion 38 protrudes outward in the left-right direction, and one (front) elastic piece 35 extends from the upper support portion 37.
a is projected in an arc shape along the front side of the outer periphery of the support shaft 28, and the other (rear) elastic piece 35 a is projected from the lower support portion 38 in an arc shape along the rear side of the outer periphery of the support shaft 28. Yes.

The insertion hole 34 of the handle holding part 33 includes a circular through hole part 34a through which the support shaft 28 is inserted and held, and a pair of front and rear bulge hole parts 34b provided continuously on both front and rear sides of the through hole part 34a. The elastic pieces 35a of the pair of engaging claws 35 are arranged at positions corresponding to the front and rear bulging hole portions 34b.
A lock member 41 is provided on the outer surface of the seat side wall 21 to lock the engagement claw 35 in a state of being engaged with the locking portion 31.

The lock member 41 includes a cylindrical support shaft portion 43 in the left-right direction, an annular portion 44 that surrounds the outer periphery of the left and right outer portions of the support shaft portion 43, and an outer wall portion 45 that connects the support shaft portion 43 and the annular portion 44. And a knob 46 projecting outward from the left and right sides from the outer wall 45. A communication hole 49 that communicates with the shaft hole 47 of the support shaft portion 43 is provided at the center of the knob portion 46.
The outer wall portion 45 of the lock member 41 is disposed on the outer side of the handle holding portion 33, the support shaft portion 43 is inserted and held by the support shaft 28, and the lock member 41 is supported by the handle holding portion 33 (seat side wall 21). The support shaft 43 is rotatably supported via 28. A pair of engaging claws 35 are housed between the annular portion 44 of the lock member 41 and the support shaft portion 43.

The lock member 41 has an arc-shaped lock piece 48 covering the outer periphery of the engaging claw 35 on the outer side of the support shaft part 43, and the lock pieces 48 are paired in the radial direction on the outer side of the support shaft part 43, Each is connected to the inner surface of the annular portion 44.
Thus, the lock member 41 moves to the lock position L where each lock piece 48 covers the outer periphery of the pair of engagement claws 35 and to the unlock position U where each lock piece 48 comes off the pair of engagement claws 35. As described above, the support shaft 28 or the handle holding portion 33 (seat side wall 21) is supported by the support shaft portion 43 so as to be rotatable around the support shaft portion 43.

In this embodiment, when the lock member 41 is rotated to the lock position L, the knob 46 is directed in the vertical direction, and when the lock member 41 is rotated to the unlock position U, the knob 46 is moved in the front-rear direction. It is configured to face.
A positioning mechanism 50 that positions the lock member 41 at the lock position L and the unlock position U is provided between the handle holding portion 33 and the lock member 41.

The positioning mechanism 50 includes an engagement concave portion 51 provided on the inner surface of the outer peripheral portion (annular portion 44) of the lock member 41 and an engagement convex portion 52 provided on the outer peripheral portion of the handle holding portion 33. And the engaging convex portion 52 are detachably engaged with each other.
That is, the through holes 53 are provided in the upper end portion, the lower end portion, the left end portion, and the right end portion of the outer peripheral portion of the handle holding portion 33, and the through holes 53 are respectively inserted into the left and right outer portions of the through holes 53 via the elastic connecting pieces 54. An engaging convex portion 52 connected to the opening edge of the hole 53 protrudes outward in the left-right direction, and the engaging convex portion 52 is deformed in the left-right direction by elastic deformation of the elastic connecting piece 54 inward in the left-right direction. It is possible to move in and out.

  On the inner surface of the annular portion 44 of the lock member 41, a plurality of (four) engaging recesses 51 are provided in the left-right direction at equal intervals in the circumferential direction corresponding to the plurality (four) engaging convex portions 52. Each time the lock member 41 is rotated 90 degrees around the support shaft 43, the engagement recess 51 and the engagement protrusion 52 are detachably engaged with each other to lock the lock member 41. Are sequentially positioned at the lock position L and the unlock position U.

A rotation restriction mechanism 57 that restricts the rotation range of the support shaft 28 is provided between the seat side wall 21 and the handle 25.
The rotation restricting mechanism 57 includes a fitting recess 58 formed in a semicircular arc shape centering on the support shaft 28 on the inner surface of the outer peripheral portion of the handle holding portion 33, and a contact plate in the vicinity of the support shaft 28 of the handle 25. The fitting convex portion 59 is provided on the outer surface of the outer peripheral portion of the portion 27, and the fitting convex portion 59 is slidably fitted around the support shaft 28 in the fitting concave portion 58. The range of movement is restricted to the range in which the fitting convex portion 59 slides in the fitting concave portion 58, whereby the movement adjustment of the handle 25 is rearward of the support shaft 28 as shown in FIGS. 10 and 11. It is configured to be in a range from the protruding rearward protruding position X1 to the forward protruding position X4 that protrudes forward of the supporting shaft 28 through the upper side of the supporting shaft 28.

  The lock member 41, the support shaft 28 of the handle 25, and the contact plate portion 27 are tightened by a fastener 61 such as a bolt and nut inserted through the support shaft portion 43 of the lock member 41 with the handle holding portion 33 sandwiched between the left and right. As a result, the lock member 41, the support shaft 28, and the abutting plate portion 27 cannot move to the left and right, and the handle 25 and the lock member 41 are respectively around the support shaft 28 or the support shaft portion 43 having the same axis as the support shaft 28. The lock member 41, the support shaft 28, and the contact plate portion 27 are held by the handle holding portion 33 so as to be rotatable around.

  According to the above-described embodiment, when the handle 25 is moved back and forth, first, the knob 46 is picked and the lock member 41 is rotated 90 degrees in the direction a or b shown in FIG. When moved to the unlocked position U, the lock piece 48 is engaged from the state where the lock piece 48 covers the outer periphery of the engaging claw 35 as shown by a two-dot chain line in FIG. The engagement claw 35 is disengaged from the joint claw 35, whereby the engagement claw 35 can be deformed and moved in the radially outward direction of the support shaft 28 by elastic deformation of the elastic piece 35a.

  In this state, when the handle 25 is pressed back and forth or pulled to rotate around the support shaft 28, the engagement claw 35 is deformed and moved outwardly of the support shaft 28 as shown in FIG. Since the claw 35 is disengaged from the engaging portion 31 of the support shaft 28 and the support shaft 28 can be rotated with respect to the handle holding portion 33, the handle 25 is rotated around the support shaft 28 so as to be in a desired front-rear position. If it moves, the latching | locking part 31 with which the engagement nail | claw 35 engages will change with the rotation position of the support shaft 28, and the handle | steering-wheel 25 will be moved and adjusted back and forth.

Thereafter, the lock member 41 may be rotated 90 degrees to return the lock position 41 from the unlock position U to the lock position L, and the handle 25 is fixed in a non-rotatable position at the position adjusted to move back and forth.
Accordingly, it is not necessary to perform a troublesome operation of rotating the handle while pressing the left and right angle change buttons as in the prior art, and the rotation operation of the lock member 41 and the rotation operation of the handle 25 are sequentially performed. Thus, the handle 25 can be easily adjusted in the front-rear direction. Further, the conventional coil spring is not required, the work of incorporating the coil spring can be omitted, the number of components of the handle device of the infant seat A for bicycles can be reduced, and the handle device can be manufactured easily and inexpensively. it can.

  Further, in the case of the present embodiment, the rotation range of the support shaft 28 is restricted to the range in which the fitting convex portion 59 slides in the fitting concave portion 58, so that the handle as shown in FIG. As shown in FIGS. 10 (b) and 11 (c), the handle 25 passes through the upward projecting positions X2 and X3 on the upper side of the support shaft 28 from the rear projecting position X1 where 25 projects rearward from the support shaft 28. As shown in FIG. 11 (d), the handle 25 is in a range up to the front projecting position X4 projecting forward from the support shaft 28, and the handle 25 is moved to the front projecting position X4. 11 (c) and FIG. 11 (d), it is possible to adjust the movement in four stages in the front-rear direction, and to adjust the movement of the handle 25 in a relatively large range in the front-rear direction.

Accordingly, the handle 25 can be easily set to a suitable front-rear position in accordance with the growth of the infant sitting on the bicycle infant seat A. 25 can be held well.
Further, in the present embodiment, the handle holding portion 33 is formed in a ring shape having an insertion hole 34 through which the support shaft 28 is inserted and held, and the engagement claw 35 is engaged with the engagement protrusion 35 b on the locking portion 31. Since the elastic piece 35a is elastically deformed so as to be removed from the combined state, the support shaft 28 can be moved in and out of the radial direction, so that the handle 25 is set in the state where the lock member 41 is set at the unlock position U. Is rotated around the support shaft 28, and the engagement claw 35 is engaged with the plurality of engagements of the support shaft 28 by the elastic deformation of the elastic piece 35 a in the radially outward direction of the support shaft 28 and the restoring force due to this elastic deformation. By sequentially engaging and disengaging with the portion 31, the engaging portions 31 with which the engaging claws 35 engage are sequentially changed one after another, and the handle 25 can be easily set at a desired front-rear adjustment position. Easy to adjust the handle 25 back and forth It can be.

The lock member 41 has a support shaft portion 43 that is rotatably inserted and held in the cylindrical hole 29 of the support shaft 28, and a lock piece 48 that covers the outer periphery of the engaging claw 35 outside the support shaft portion 43. The lock member 41 has a lock position L where the lock piece 48 covers the outer periphery of the engagement claw 35 and the engagement claw 35.
The lock member 41 is rotatably supported around the support shaft portion 43 so as to move to the unlock position U that is disengaged from the lock position L. Therefore, the lock member 41 is rotated around the support shaft portion 43 so that the lock position L and the unlock position U are rotated. Therefore, the handle 25 can be easily adjusted back and forth from this point.

Further, since the positioning mechanism 50 is provided between the handle holding portion 33 and the lock member 41, the lock member 41 can be easily turned by rotating to the lock position L or the unlock position U. 41, the engagement claw 35 can be reliably and easily locked in a state where the engagement claw 35 is engaged with the locking portion 31, and the lock can be easily and reliably released.
Further, since the rotation restricting mechanism 57 is provided between the seat side wall 21 and the handle 25, the rotation restricting mechanism 57 restricts the rotation range of the support shaft 28 and supports the movement adjustment of the handle 25. The range is from the rearward projecting position X1 projecting rearward from the shaft 28 to the front projecting position X4 projecting forward from the support shaft 28 through the upper side of the support shaft 28, and the front and rear adjustment of the handle 25 can be performed within a large range. It can be done efficiently.

  In the above-described embodiment, the handle holding portion 33 is provided with a pair of front and rear engaging claws 35 and the support shaft 28 is provided with six locking portions 31 in the circumferential direction. Only one engagement claw 35 or three or more engagement claws 35 may be provided on the portion 33, or four, five, or seven engagement portions 31 may be provided in the circumferential direction of the support shaft 28. For example, the support shaft 28 may be formed in a rectangular tube shape, and the four corners on the outer periphery of the support shaft 28 may be the locking portions 31.

In the above embodiment, the lock member 41 can be moved to the lock position L and the unlock position U by rotating around the support shaft portion 43 on the seat side wall 21. The member 41 may be provided on the seat side wall 21 so as to be reciprocally movable in the linear direction between the lock position L and the unlock position U.
In the above embodiment, the handle device of the present invention is applied to the infant seat A for bicycles. Instead, it is used for infant seats for toy vehicles other than bicycles, meals, and the like. It may be applied to an infant seat.

DESCRIPTION OF SYMBOLS 1 Seat part 2 Seat main body 21 Seat side wall 25 Handle 28 Support shaft 29 Tube hole 31 Locking part 33 Handle holding part 34 Insertion hole 35 Engagement claw 35a Elastic piece 35b Engagement protrusion 41 Lock member 43 Support shaft part 48 Lock piece 50 Positioning mechanism 57 Rotation restricting mechanism A Bicycle infant seat L Lock position U Unlock position

Claims (5)

Support shafts (28) are provided at both left and right ends of the handle (25) so that the handle (25) can be moved back and forth by rotating around the support shaft (28). Handles are mounted on the left and right seat side walls (21). A handle device for an infant seat provided with a handle holding portion (33) for holding the support shaft (28) of (25) rotatably about the support shaft (28),
A plurality of engaging portions (31) are provided on the outer periphery of the support shaft (28) at intervals in the circumferential direction, and a plurality of engagement portions are provided to fix the support shaft (28) to the handle holding portion (33) in a non-rotatable manner. The engagement claw (35) that selectively engages with the stop portion (31) is changed by the locking portion (31) with which the engagement claw (35) engages depending on the rotation position of the support shaft (28). A handle (25) is provided so that it can be moved back and forth,
A locking member (41) that locks the engaging claw (35) in a state of being engaged with the locking portion (31) is movable to a locking position (L) and an unlocking position (U) on the seat side wall (21). A handle device for an infant seat, which is provided. The handle holding portion (33) is formed in a ring shape having an insertion hole (34) through which the support shaft (28) is inserted and held, and the locking portion (31) has a groove shape on the outer periphery of the support shaft (28). Are arranged in the outer periphery of the support shaft (28) at intervals in the circumferential direction,
The engaging claw (35) includes an elastic piece (35a) protruding from the opening edge of the insertion hole (34) of the handle holding part (33) along the outer periphery of the support shaft (28), and an elastic piece (35a). ) From the projecting end portion toward the locking portion (31), and the engagement protruding portion (35b) is removed from the state of being engaged with the locking portion (31). The handle device for an infant seat according to claim 1, characterized in that it can be moved in and out of the radial direction of the support shaft (28) by elastic deformation of the elastic piece (35a) so as to be detached.   The support shaft (28) is formed in a cylindrical shape having a cylindrical hole (29), and the locking member (41) is rotatably supported in the cylindrical hole (29) of the support shaft (28). And a lock piece (48) covering the outer periphery of the engaging claw (35) outside the support shaft part (43), and the lock member (41) includes a lock piece (48). It is rotatably supported around the support shaft (43) so as to move to a lock position (L) that covers the outer periphery of the engagement claw (35) and an unlock position (U) that is disengaged from the engagement claw (35). The infant seat handle device according to claim 2, wherein the child seat handle device is provided.   A positioning mechanism (50) for positioning the lock member (41) at the lock position (L) and the unlock position (U) is provided between the handle holding portion (33) and the lock member (41). The handle device for an infant device according to any one of claims 1 to 3.   A forward projecting position in which the movement adjustment of the handle (25) projects forward from the support shaft (28) through the upper side of the support shaft (28) from the rear projecting position (X1) projecting rearward from the support shaft (28). A rotation restricting mechanism (57) for restricting the rotation range of the support shaft (28) is provided between the seat side wall (21) and the handle (25) so as to be in the range up to (X4). The handle device for an infant seat according to any one of claims 1 to 4.

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